/* roulang page: index */
:root {
            --brand-red: #D32F2F;
            --brand-orange: #F57C00;
            --brand-amber: #FFC107;
            --brand-gradient: linear-gradient(135deg, #D32F2F 0%, #F57C00 100%);
            --brand-gradient-hover: linear-gradient(135deg, #B71C1C 0%, #E65100 100%);
            --text-dark: #263238;
            --text-body: #455A64;
            --text-muted: #78909C;
            --bg-page: #FAFAFA;
            --bg-card: #FFFFFF;
            --bg-light: #ECEFF1;
            --bg-footer: #263238;
            --border-light: #CFD8DC;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 12px 36px rgba(0, 0, 0, 0.16);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 30px;
            --radius-full: 50px;
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --spacing-section: 4rem;
            --spacing-section-mobile: 2.5rem;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-stack);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--bg-page);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--brand-red);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--brand-orange);
            text-decoration: none;
        }
        a:focus-visible {
            outline: 2px solid var(--brand-orange);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        @media (min-width: 1400px) {
            .container {
                max-width: 1280px;
            }
        }

        /* ========== 导航栏 - 卡片化导航面板 ========== */
        .navbar-custom {
            background: var(--bg-card);
            box-shadow: var(--shadow-sm);
            border-radius: 0 0 var(--radius-md) var(--radius-md);
            padding: 0.6rem 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: box-shadow var(--transition-normal);
        }
        .navbar-custom.scrolled {
            box-shadow: var(--shadow-md);
        }
        .navbar-brand-custom {
            font-size: 1.5rem;
            font-weight: 700;
            background: var(--brand-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .nav-category-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.45rem 0.9rem;
            border-radius: var(--radius-sm);
            background: #F5F5F5;
            color: var(--text-dark);
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
            white-space: nowrap;
            text-decoration: none;
        }
        .nav-category-btn:hover {
            background: var(--brand-gradient);
            color: #fff;
            border-color: transparent;
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }
        .nav-category-btn.active {
            background: var(--brand-gradient);
            color: #fff;
            border-color: transparent;
            font-weight: 600;
        }
        .nav-category-btn i {
            font-size: 0.85rem;
        }
        .nav-cta-btn {
            display: inline-block;
            padding: 0.5rem 1.5rem;
            border-radius: var(--radius-xl);
            background: var(--brand-gradient);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            border: none;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
            box-shadow: var(--shadow-sm);
        }
        .nav-cta-btn:hover {
            background: var(--brand-gradient-hover);
            color: #fff;
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .navbar-toggler-custom {
            border: 2px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 0.4rem 0.55rem;
            background: #fff;
            transition: all var(--transition-fast);
        }
        .navbar-toggler-custom:focus {
            box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.2);
            border-color: var(--brand-red);
        }
        .navbar-toggler-icon-custom {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-dark);
            position: relative;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        .navbar-toggler-icon-custom::before,
        .navbar-toggler-icon-custom::after {
            content: '';
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-dark);
            position: absolute;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        .navbar-toggler-icon-custom::before {
            top: -7px;
        }
        .navbar-toggler-icon-custom::after {
            top: 7px;
        }
        @media (max-width: 991.98px) {
            .navbar-collapse-custom {
                background: var(--bg-card);
                border-radius: var(--radius-md);
                box-shadow: var(--shadow-lg);
                padding: 1rem;
                margin-top: 0.5rem;
                border: 1px solid var(--border-light);
            }
            .nav-category-btn {
                display: block;
                text-align: center;
                margin-bottom: 0.4rem;
            }
            .nav-cta-btn {
                display: block;
                text-align: center;
                margin-top: 0.5rem;
            }
        }
        @media (min-width: 992px) {
            .navbar-custom {
                margin: 0.5rem 1rem;
                border-radius: var(--radius-md);
                top: 0.5rem;
            }
            .navbar-custom .container {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }

        /* ========== Hero 首屏 ========== */
        .hero-section {
            position: relative;
            min-height: 82vh;
            background: var(--brand-gradient);
            display: flex;
            align-items: center;
            overflow: hidden;
            clip-path: ellipse(150% 100% at 50% 0%);
            padding: 5rem 0 6rem;
        }
        @media (max-width: 768px) {
            .hero-section {
                min-height: 70vh;
                clip-path: ellipse(180% 100% at 50% 0%);
                padding: 3.5rem 0 4rem;
            }
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -180px;
            width: 500px;
            height: 500px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -100px;
            width: 350px;
            height: 350px;
            background: rgba(255, 255, 255, 0.03);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.2);
            color: #fff;
            padding: 0.35rem 1rem;
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 1.2rem;
            backdrop-filter: blur(4px);
            letter-spacing: 0.03em;
        }
        .hero-title {
            font-size: 2.8rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.25;
            margin-bottom: 1rem;
            letter-spacing: 0.01em;
        }
        .hero-title .highlight {
            background: rgba(255, 255, 255, 0.15);
            padding: 0.1em 0.35em;
            border-radius: 6px;
            display: inline-block;
            backdrop-filter: blur(2px);
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 1.8rem;
            }
        }
        .hero-desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.9);
            line-height: 1.7;
            margin-bottom: 1.5rem;
            max-width: 600px;
        }
        @media (max-width: 768px) {
            .hero-desc {
                font-size: 0.95rem;
            }
        }
        .hero-sell-points {
            list-style: none;
            padding: 0;
            margin: 0 0 1.5rem;
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
        }
        .hero-sell-points li {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            padding: 0.4rem 0.9rem;
            border-radius: var(--radius-full);
            font-size: 0.88rem;
            font-weight: 500;
            backdrop-filter: blur(3px);
        }
        .hero-sell-points li i {
            color: var(--brand-amber);
            font-size: 0.8rem;
        }
        .btn-hero-primary {
            display: inline-block;
            padding: 0.75rem 2.2rem;
            border-radius: var(--radius-xl);
            background: #fff;
            color: var(--brand-red);
            font-weight: 700;
            font-size: 1rem;
            border: none;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
            text-decoration: none;
            letter-spacing: 0.02em;
        }
        .btn-hero-primary:hover {
            background: #fff;
            color: var(--brand-red);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.22);
            transform: translateY(-3px);
        }
        .btn-hero-outline {
            display: inline-block;
            padding: 0.75rem 2.2rem;
            border-radius: var(--radius-xl);
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid rgba(255, 255, 255, 0.7);
            transition: all var(--transition-fast);
            text-decoration: none;
            letter-spacing: 0.02em;
        }
        .btn-hero-outline:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
            color: #fff;
            transform: translateY(-3px);
        }
        .hero-trust-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            margin-top: 1.8rem;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.8);
        }
        .hero-trust-strip span {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
        }
        .hero-trust-strip i {
            color: var(--brand-amber);
        }
        .hero-data-badge {
            position: absolute;
            right: 5%;
            top: 20%;
            background: rgba(255, 255, 255, 0.95);
            color: var(--text-dark);
            border-radius: var(--radius-lg);
            padding: 1.2rem 1.8rem;
            box-shadow: var(--shadow-xl);
            text-align: center;
            z-index: 3;
            backdrop-filter: blur(8px);
        }
        .hero-data-badge .big-number {
            font-size: 2.8rem;
            font-weight: 700;
            background: var(--brand-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
            line-height: 1;
        }
        .hero-data-badge .label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 0.3rem;
        }
        @media (max-width: 768px) {
            .hero-data-badge {
                position: relative;
                right: auto;
                top: auto;
                margin-top: 1rem;
                display: inline-block;
            }
            .hero-data-badge .big-number {
                font-size: 2rem;
            }
        }

        /* ========== 通用板块 ========== */
        .section-block {
            padding: var(--spacing-section) 0;
        }
        @media (max-width: 768px) {
            .section-block {
                padding: var(--spacing-section-mobile) 0;
            }
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--brand-orange);
            margin-bottom: 0.5rem;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.8rem;
            letter-spacing: 0.01em;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 1.5rem;
            }
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            margin-bottom: 2.5rem;
            max-width: 700px;
        }

        /* ========== 卡片系统 ========== */
        .card-custom {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            padding: 1.5rem;
            border: none;
            transition: all var(--transition-normal);
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        .card-custom:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .card-custom .card-gradient-top {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--brand-gradient);
            border-radius: var(--radius-md) var(--radius-md) 0 0;
        }
        .card-custom .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: var(--brand-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.3rem;
            margin-bottom: 1rem;
        }
        .card-custom .card-title {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 0.5rem;
        }
        .card-custom .card-text {
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.6;
        }
        .badge-data {
            display: inline-block;
            background: var(--brand-amber);
            color: var(--text-dark);
            padding: 0.2em 0.65em;
            border-radius: var(--radius-lg);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            position: absolute;
            top: 1rem;
            right: 1rem;
            z-index: 2;
        }

        /* ========== 按钮系统 ========== */
        .btn-brand {
            display: inline-block;
            padding: 0.6rem 2rem;
            border-radius: var(--radius-xl);
            background: var(--brand-gradient);
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            transition: all var(--transition-fast);
            text-decoration: none;
            box-shadow: var(--shadow-sm);
            cursor: pointer;
            letter-spacing: 0.02em;
        }
        .btn-brand:hover {
            background: var(--brand-gradient-hover);
            color: #fff;
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .btn-brand-outline {
            display: inline-block;
            padding: 0.55rem 1.9rem;
            border-radius: var(--radius-xl);
            background: transparent;
            color: var(--brand-red);
            font-weight: 600;
            font-size: 0.95rem;
            border: 2px solid var(--brand-red);
            transition: all var(--transition-fast);
            text-decoration: none;
            cursor: pointer;
            letter-spacing: 0.02em;
        }
        .btn-brand-outline:hover {
            background: var(--brand-gradient);
            color: #fff;
            border-color: transparent;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-sm-brand {
            padding: 0.4rem 1.3rem;
            font-size: 0.85rem;
            border-radius: var(--radius-xl);
            background: var(--brand-gradient);
            color: #fff;
            font-weight: 600;
            border: none;
            transition: all var(--transition-fast);
            text-decoration: none;
            display: inline-block;
            cursor: pointer;
        }
        .btn-sm-brand:hover {
            background: var(--brand-gradient-hover);
            color: #fff;
            box-shadow: var(--shadow-sm);
        }

        /* ========== 场景卡片 ========== */
        .scene-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            transition: all var(--transition-normal);
            height: 100%;
        }
        .scene-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .scene-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: var(--radius-md) var(--radius-md) 0 0;
        }
        .scene-card .scene-body {
            padding: 1.3rem;
        }
        .scene-card .scene-title {
            font-weight: 600;
            font-size: 1.1rem;
            color: var(--text-dark);
            margin-bottom: 0.4rem;
        }
        .scene-card .scene-text {
            font-size: 0.9rem;
            color: var(--text-body);
            line-height: 1.5;
        }

        /* ========== 价格卡片 ========== */
        .price-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            padding: 2rem 1.5rem;
            text-align: center;
            transition: all var(--transition-normal);
            height: 100%;
            position: relative;
            border: 2px solid transparent;
        }
        .price-card.featured {
            border: 2px solid var(--brand-orange);
            box-shadow: var(--shadow-lg);
            transform: scale(1.03);
            z-index: 2;
        }
        .price-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .price-card.featured:hover {
            transform: scale(1.03) translateY(-3px);
        }
        .price-badge {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--brand-gradient);
            color: #fff;
            padding: 0.3rem 1.2rem;
            border-radius: var(--radius-full);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.03em;
        }
        .price-amount {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--brand-red);
            margin: 0.8rem 0;
        }
        .price-amount small {
            font-size: 1rem;
            font-weight: 400;
            color: var(--text-muted);
        }
        .price-features {
            list-style: none;
            padding: 0;
            margin: 1rem 0 1.5rem;
            text-align: left;
        }
        .price-features li {
            padding: 0.4rem 0;
            font-size: 0.9rem;
            color: var(--text-body);
            border-bottom: 1px solid #f0f0f0;
        }
        .price-features li i {
            color: #4CAF50;
            margin-right: 0.5rem;
        }

        /* ========== 新闻卡片 ========== */
        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 1.2rem;
            display: flex;
            gap: 1rem;
            align-items: flex-start;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
            margin-bottom: 0.8rem;
        }
        .news-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--border-light);
            transform: translateX(3px);
        }
        .news-date-badge {
            flex-shrink: 0;
            width: 56px;
            height: 56px;
            background: var(--brand-gradient);
            border-radius: var(--radius-sm);
            color: #fff;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.75rem;
            line-height: 1.2;
            text-align: center;
        }
        .news-date-badge .day {
            font-size: 1.2rem;
        }
        .news-content {
            flex: 1;
        }
        .news-content .news-title {
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-dark);
            margin-bottom: 0.3rem;
        }
        .news-content .news-summary {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
            margin-bottom: 0.4rem;
        }

        /* ========== FAQ 手风琴 ========== */
        .accordion-custom .accordion-item {
            border: none;
            background: var(--bg-card);
            border-radius: var(--radius-md) !important;
            margin-bottom: 0.7rem;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }
        .accordion-custom .accordion-header button {
            background: #fff;
            color: var(--text-dark);
            font-weight: 600;
            font-size: 1rem;
            padding: 1.1rem 1.5rem;
            border: none;
            box-shadow: none;
            border-radius: var(--radius-md) !important;
            transition: all var(--transition-fast);
            width: 100%;
            text-align: left;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .accordion-custom .accordion-header button:not(.collapsed) {
            background: linear-gradient(135deg, #FFF8F6 0%, #FFF3E0 100%);
            color: var(--brand-red);
        }
        .accordion-custom .accordion-header button:focus {
            box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.15);
        }
        .accordion-custom .accordion-body {
            padding: 1rem 1.5rem 1.3rem;
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.7;
        }
        .accordion-custom .accordion-header button::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 1rem;
            transition: transform var(--transition-fast);
            flex-shrink: 0;
            margin-left: 0.8rem;
        }
        .accordion-custom .accordion-header button:not(.collapsed)::after {
            transform: rotate(180deg);
            color: var(--brand-red);
        }

        /* ========== CTA 横幅 ========== */
        .cta-banner {
            background: var(--brand-gradient);
            border-radius: var(--radius-md);
            padding: 3rem 2rem;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-banner .cta-title {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
            position: relative;
            z-index: 1;
        }
        .cta-banner .cta-text {
            font-size: 1rem;
            margin-bottom: 1.5rem;
            opacity: 0.9;
            position: relative;
            z-index: 1;
        }
        .cta-banner .btn-cta-white {
            display: inline-block;
            padding: 0.7rem 2.4rem;
            border-radius: var(--radius-xl);
            background: #fff;
            color: var(--brand-red);
            font-weight: 700;
            font-size: 1rem;
            border: none;
            transition: all var(--transition-fast);
            text-decoration: none;
            position: relative;
            z-index: 1;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
        }
        .cta-banner .btn-cta-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
        }

        /* ========== 页脚 ========== */
        .footer-custom {
            background: var(--bg-footer);
            color: #B0BEC5;
            padding: 3rem 0 1.5rem;
            font-size: 0.9rem;
        }
        .footer-custom h5 {
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            margin-bottom: 1rem;
        }
        .footer-custom a {
            color: #B0BEC5;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .footer-custom a:hover {
            color: #fff;
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .footer-custom ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-custom ul li {
            margin-bottom: 0.5rem;
        }
        .footer-divider {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            margin: 2rem 0 1.5rem;
        }
        .footer-bottom {
            font-size: 0.8rem;
            color: #78909C;
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            justify-content: space-between;
            align-items: center;
        }
        @media (max-width: 768px) {
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 0.5rem;
            }
        }

        /* ========== 品牌介绍区域 ========== */
        .brand-intro-bg {
            background: linear-gradient(180deg, #FFFFFF 0%, #F5F5F5 100%);
            border-radius: var(--radius-md);
            padding: 2.5rem;
            box-shadow: var(--shadow-sm);
        }
        .brand-intro-bg img {
            border-radius: var(--radius-md);
            width: 100%;
            height: 280px;
            object-fit: cover;
        }
        @media (max-width: 768px) {
            .brand-intro-bg {
                padding: 1.5rem;
            }
            .brand-intro-bg img {
                height: 200px;
                margin-bottom: 1rem;
            }
        }

        /* ========== 合集目录卡片 ========== */
        .collection-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 1.5rem;
            text-align: center;
            transition: all var(--transition-fast);
            border: 1px solid #f0f0f0;
            height: 100%;
        }
        .collection-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--brand-orange);
            transform: translateY(-3px);
        }
        .collection-card .count-badge {
            display: inline-block;
            background: var(--brand-gradient);
            color: #fff;
            padding: 0.25em 0.8em;
            border-radius: var(--radius-full);
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 0.6rem;
        }
        .collection-card .collection-title {
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-dark);
            margin-bottom: 0.3rem;
        }

        /* ========== 观点解读卡片 ========== */
        .opinion-card {
            background: #FFF8F6;
            border-left: 4px solid var(--brand-orange);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            padding: 1.5rem;
            margin-bottom: 1rem;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-fast);
        }
        .opinion-card:hover {
            box-shadow: var(--shadow-md);
            border-left-color: var(--brand-red);
        }
        .opinion-card .quote-text {
            font-size: 1rem;
            color: var(--text-dark);
            font-style: italic;
            line-height: 1.7;
            margin-bottom: 0.5rem;
        }
        .opinion-card .quote-author {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ========== 使用指南 ========== */
        .guide-list {
            list-style: none;
            padding: 0;
            counter-reset: guide-counter;
        }
        .guide-list li {
            counter-increment: guide-counter;
            padding: 1rem 1rem 1rem 3.5rem;
            position: relative;
            margin-bottom: 0.8rem;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-fast);
            font-size: 0.95rem;
            line-height: 1.6;
            color: var(--text-body);
        }
        .guide-list li:hover {
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
        }
        .guide-list li::before {
            content: counter(guide-counter);
            position: absolute;
            left: 1rem;
            top: 50%;
            transform: translateY(-50%);
            width: 32px;
            height: 32px;
            background: var(--brand-gradient);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.85rem;
        }

        /* ========== 内容预告时间轴 ========== */
        .timeline-item {
            display: flex;
            gap: 1.2rem;
            margin-bottom: 1.2rem;
            padding: 1rem;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-fast);
            align-items: center;
        }
        .timeline-item:hover {
            box-shadow: var(--shadow-md);
        }
        .timeline-dot {
            flex-shrink: 0;
            width: 14px;
            height: 14px;
            background: var(--brand-gradient);
            border-radius: 50%;
            box-shadow: 0 0 0 5px rgba(211, 47, 47, 0.12);
        }
        .timeline-date {
            flex-shrink: 0;
            font-weight: 600;
            font-size: 0.85rem;
            color: var(--brand-red);
            min-width: 70px;
        }
        .timeline-content {
            flex: 1;
        }
        .timeline-content .tl-title {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-dark);
        }
        .timeline-content .tl-desc {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* ========== 响应式补充 ========== */
        @media (max-width: 768px) {
            .card-custom {
                padding: 1rem;
                border-radius: var(--radius-sm);
            }
            .card-custom .card-gradient-top {
                border-radius: var(--radius-sm) var(--radius-sm) 0 0;
            }
            .btn-brand,
            .btn-brand-outline {
                padding: 0.5rem 1.5rem;
                font-size: 0.9rem;
            }
            .price-card.featured {
                transform: scale(1);
            }
            .price-card.featured:hover {
                transform: translateY(-3px);
            }
            .hero-trust-strip {
                gap: 0.8rem;
                font-size: 0.78rem;
            }
            .news-card {
                flex-direction: column;
            }
            .news-date-badge {
                width: 100%;
                height: auto;
                flex-direction: row;
                gap: 0.5rem;
                padding: 0.5rem;
                border-radius: var(--radius-sm);
            }
        }
        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.5rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .hero-sell-points {
                gap: 0.4rem;
            }
            .hero-sell-points li {
                font-size: 0.75rem;
                padding: 0.3rem 0.6rem;
            }
            .btn-hero-primary,
            .btn-hero-outline {
                padding: 0.6rem 1.5rem;
                font-size: 0.85rem;
                display: block;
                width: 100%;
                text-align: center;
                margin-bottom: 0.5rem;
            }
        }

/* roulang page: category1 */
:root {
            --brand-red: #D32F2F;
            --brand-orange: #F57C00;
            --brand-amber: #FFC107;
            --brand-gradient: linear-gradient(135deg, #D32F2F 0%, #F57C00 100%);
            --brand-gradient-hover: linear-gradient(135deg, #B71C1C 0%, #E65100 100%);
            --brand-gradient-soft: linear-gradient(135deg, rgba(211, 47, 47, 0.06) 0%, rgba(245, 124, 0, 0.06) 100%);
            --text-dark: #263238;
            --text-body: #455A64;
            --text-muted: #78909C;
            --bg-page: #FAFAFA;
            --bg-card: #FFFFFF;
            --bg-light: #ECEFF1;
            --bg-footer: #263238;
            --border-light: #CFD8DC;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 12px 36px rgba(0, 0, 0, 0.16);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 30px;
            --radius-full: 50px;
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --spacing-section: 4rem;
            --spacing-section-mobile: 2.5rem;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-stack);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--bg-page);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--brand-red);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--brand-orange);
            text-decoration: none;
        }

        a:focus-visible {
            outline: 2px solid var(--brand-orange);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            font-family: inherit;
        }

        .container {
            max-width: 1280px;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        /* ========== 导航栏 - 卡片化导航面板 ========== */
        .navbar-custom {
            background: var(--bg-card);
            box-shadow: var(--shadow-sm);
            border-radius: 0 0 var(--radius-md) var(--radius-md);
            padding: 0.6rem 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: box-shadow var(--transition-normal);
        }

        .navbar-custom.scrolled {
            box-shadow: var(--shadow-md);
        }

        .navbar-brand-custom {
            font-size: 1.5rem;
            font-weight: 700;
            background: var(--brand-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .nav-category-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.45rem 0.9rem;
            border-radius: var(--radius-sm);
            background: #F5F5F5;
            color: var(--text-dark);
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
            white-space: nowrap;
            text-decoration: none;
        }

        .nav-category-btn:hover {
            background: var(--brand-gradient);
            color: #fff;
            border-color: transparent;
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        .nav-category-btn.active {
            background: var(--brand-gradient);
            color: #fff;
            border-color: transparent;
            font-weight: 600;
        }

        .nav-category-btn i {
            font-size: 0.85rem;
        }

        .nav-cta-btn {
            display: inline-block;
            padding: 0.5rem 1.5rem;
            border-radius: var(--radius-xl);
            background: var(--brand-gradient);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            border: none;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
            box-shadow: var(--shadow-sm);
        }

        .nav-cta-btn:hover {
            background: var(--brand-gradient-hover);
            color: #fff;
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .navbar-toggler-custom {
            border: 2px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 0.4rem 0.55rem;
            background: #fff;
            transition: all var(--transition-fast);
        }

        .navbar-toggler-custom:focus {
            box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.2);
            border-color: var(--brand-red);
        }

        .navbar-toggler-icon-custom {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-dark);
            position: relative;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .navbar-toggler-icon-custom::before,
        .navbar-toggler-icon-custom::after {
            content: '';
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-dark);
            border-radius: 2px;
            position: absolute;
            left: 0;
            transition: all var(--transition-fast);
        }

        .navbar-toggler-icon-custom::before {
            top: -7px;
        }

        .navbar-toggler-icon-custom::after {
            top: 7px;
        }

        .navbar-collapse-custom {
            gap: 0.5rem;
        }

        @media (max-width: 991px) {
            .navbar-collapse-custom {
                background: var(--bg-card);
                border-radius: var(--radius-md);
                padding: 1rem;
                margin-top: 0.6rem;
                box-shadow: var(--shadow-md);
            }
            .nav-category-btn {
                display: flex;
                width: 100%;
                margin-bottom: 0.3rem;
                justify-content: flex-start;
                padding: 0.55rem 1rem;
            }
            .nav-cta-btn {
                display: block;
                text-align: center;
                margin-top: 0.5rem;
            }
        }

        /* ========== 按钮系统 ========== */
        .btn-primary-custom {
            display: inline-block;
            padding: 0.6rem 2rem;
            border-radius: var(--radius-xl);
            background: var(--brand-gradient);
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-sm);
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-primary-custom:hover {
            background: var(--brand-gradient-hover);
            color: #fff;
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .btn-outline-custom {
            display: inline-block;
            padding: 0.55rem 1.8rem;
            border-radius: var(--radius-xl);
            border: 2px solid var(--brand-red);
            color: var(--brand-red);
            font-weight: 600;
            font-size: 0.95rem;
            background: transparent;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-outline-custom:hover {
            background: var(--brand-gradient);
            color: #fff;
            border-color: transparent;
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .btn-lg-custom {
            padding: 0.8rem 2.5rem;
            font-size: 1.05rem;
            border-radius: var(--radius-full);
        }

        /* ========== 卡片系统 ========== */
        .card-custom {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            transition: all var(--transition-normal);
            border: none;
            height: 100%;
        }

        .card-custom:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }

        .card-custom .card-img-top {
            border-radius: var(--radius-md) var(--radius-md) 0 0;
            height: 200px;
            object-fit: cover;
        }

        .card-custom .card-body {
            padding: 1.5rem;
        }

        .card-custom .card-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.6rem;
        }

        .card-custom .card-text {
            font-size: 0.9rem;
            color: var(--text-body);
            line-height: 1.6;
        }

        .card-top-accent {
            border-top: 4px solid transparent;
            border-image: var(--brand-gradient) 1;
            border-radius: var(--radius-md) var(--radius-md) 0 0;
        }

        .card-with-badge {
            position: relative;
        }

        .card-badge {
            position: absolute;
            top: 12px;
            right: 12px;
            background: var(--brand-amber);
            color: var(--text-dark);
            font-weight: 700;
            font-size: 0.8rem;
            padding: 0.25em 0.7em;
            border-radius: var(--radius-lg);
            z-index: 2;
            box-shadow: var(--shadow-sm);
        }

        /* ========== 板块间距 ========== */
        .section-py {
            padding-top: var(--spacing-section);
            padding-bottom: var(--spacing-section);
        }

        .section-py-sm {
            padding-top: 2.5rem;
            padding-bottom: 2.5rem;
        }

        @media (max-width: 768px) {
            .section-py {
                padding-top: var(--spacing-section-mobile);
                padding-bottom: var(--spacing-section-mobile);
            }
            .section-py-sm {
                padding-top: 1.5rem;
                padding-bottom: 1.5rem;
            }
        }

        /* ========== Hero 分类页 ========== */
        .category-hero {
            position: relative;
            min-height: 45vh;
            display: flex;
            align-items: center;
            background: var(--brand-gradient);
            overflow: hidden;
            clip-path: ellipse(120% 100% at 50% 0%);
            padding: 3rem 0 4rem;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.18;
            z-index: 0;
        }

        .category-hero .hero-content {
            position: relative;
            z-index: 1;
            text-align: center;
            color: #fff;
        }

        .category-hero .hero-icon {
            font-size: 3.5rem;
            margin-bottom: 1rem;
            display: inline-block;
            background: rgba(255, 255, 255, 0.2);
            width: 90px;
            height: 90px;
            line-height: 90px;
            border-radius: 50%;
            text-align: center;
        }

        .category-hero h1 {
            font-size: 2.5rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.8rem;
            letter-spacing: 0.02em;
        }

        .category-hero .hero-subtitle {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.9);
            max-width: 650px;
            margin: 0 auto 1.5rem;
            line-height: 1.7;
        }

        @media (max-width: 768px) {
            .category-hero {
                min-height: 35vh;
                clip-path: ellipse(150% 100% at 50% 0%);
                padding: 2rem 0 3rem;
            }
            .category-hero h1 {
                font-size: 1.8rem;
            }
            .category-hero .hero-subtitle {
                font-size: 0.95rem;
            }
            .category-hero .hero-icon {
                font-size: 2.5rem;
                width: 65px;
                height: 65px;
                line-height: 65px;
            }
        }

        /* ========== 板块标题 ========== */
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-dark);
            text-align: center;
            margin-bottom: 0.6rem;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            text-align: center;
            margin-bottom: 2.5rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .section-title-left {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.6rem;
            text-align: left;
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 1.5rem;
            }
            .section-title-left {
                font-size: 1.4rem;
            }
        }

        /* ========== 步骤流程 ========== */
        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            padding: 1.8rem;
            text-align: center;
            position: relative;
            transition: all var(--transition-normal);
            height: 100%;
        }

        .step-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--brand-gradient);
            color: #fff;
            font-weight: 700;
            font-size: 1.3rem;
            margin-bottom: 1rem;
            box-shadow: var(--shadow-sm);
        }

        .step-card h4 {
            font-weight: 700;
            color: var(--text-dark);
            font-size: 1.1rem;
            margin-bottom: 0.5rem;
        }

        .step-card p {
            font-size: 0.9rem;
            color: var(--text-body);
            margin: 0;
        }

        /* ========== 技巧标签 ========== */
        .tip-tag {
            display: inline-block;
            padding: 0.35em 0.9em;
            border-radius: var(--radius-lg);
            background: var(--brand-gradient-soft);
            color: var(--brand-red);
            font-weight: 600;
            font-size: 0.85rem;
            margin: 0.2rem;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
        }

        .tip-tag:hover {
            background: var(--brand-gradient);
            color: #fff;
            border-color: transparent;
            transform: translateY(-1px);
        }

        /* ========== 列表样式 ========== */
        .check-list {
            list-style: none;
            padding-left: 0;
        }

        .check-list li {
            padding: 0.5rem 0 0.5rem 2rem;
            position: relative;
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.6;
        }

        .check-list li::before {
            content: '\f00c';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 0.5rem;
            color: var(--brand-orange);
            font-size: 0.85rem;
        }

        /* ========== FAQ 手风琴 ========== */
        .accordion-custom .accordion-item {
            border: none;
            margin-bottom: 0.8rem;
            border-radius: var(--radius-md) !important;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .accordion-custom .accordion-button {
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-dark);
            background: var(--bg-card);
            border-radius: var(--radius-md) !important;
            padding: 1.1rem 1.5rem;
            box-shadow: none;
            transition: all var(--transition-fast);
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            background: var(--brand-gradient-soft);
            color: var(--brand-red);
            box-shadow: none;
            border-radius: var(--radius-md) var(--radius-md) 0 0 !important;
        }

        .accordion-custom .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.15);
            border-color: transparent;
        }

        .accordion-custom .accordion-button::after {
            background-image: none;
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            content: '\f067';
            width: auto;
            height: auto;
            font-size: 0.85rem;
            color: var(--brand-red);
            transition: transform var(--transition-fast);
        }

        .accordion-custom .accordion-button:not(.collapsed)::after {
            content: '\f068';
            transform: rotate(0);
            color: var(--brand-red);
        }

        .accordion-custom .accordion-body {
            padding: 1.2rem 1.5rem;
            background: #fff;
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.7;
            border-radius: 0 0 var(--radius-md) var(--radius-md);
        }

        /* ========== CTA 横幅 ========== */
        .cta-banner {
            background: var(--brand-gradient);
            border-radius: var(--radius-md);
            padding: 2.5rem 2rem;
            text-align: center;
            color: #fff;
            box-shadow: var(--shadow-lg);
            margin: 2rem 0;
        }

        .cta-banner h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
            color: #fff;
        }

        .cta-banner p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 1.5rem;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-banner .btn-light-custom {
            display: inline-block;
            padding: 0.7rem 2.2rem;
            border-radius: var(--radius-xl);
            background: #fff;
            color: var(--brand-red);
            font-weight: 700;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            box-shadow: var(--shadow-sm);
        }

        .cta-banner .btn-light-custom:hover {
            background: #FFF8E1;
            color: #B71C1C;
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .cta-banner {
                padding: 1.8rem 1.2rem;
            }
            .cta-banner h3 {
                font-size: 1.3rem;
            }
        }

        /* ========== 页脚 ========== */
        .footer-custom {
            background: var(--bg-footer);
            color: #B0BEC5;
            padding: 3rem 0 1.5rem;
            font-size: 0.9rem;
        }

        .footer-custom h5 {
            color: #fff;
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: 1.2rem;
            letter-spacing: 0.02em;
        }

        .footer-custom ul {
            list-style: none;
            padding-left: 0;
        }

        .footer-custom ul li {
            margin-bottom: 0.55rem;
            font-size: 0.85rem;
        }

        .footer-custom ul li a {
            color: #B0BEC5;
            transition: color var(--transition-fast);
            text-decoration: none;
        }

        .footer-custom ul li a:hover {
            color: #fff;
            text-decoration: underline;
        }

        .footer-custom .footer-divider {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            margin: 2rem 0 1.2rem;
        }

        .footer-custom .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: #90A4AE;
        }

        .footer-custom .footer-bottom a {
            color: #90A4AE;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-custom .footer-bottom a:hover {
            color: #fff;
            text-decoration: underline;
        }

        @media (max-width: 768px) {
            .footer-custom {
                padding: 2rem 0 1rem;
            }
            .footer-custom .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 0.5rem;
            }
        }

        /* ========== 图片圆角 ========== */
        .img-rounded {
            border-radius: var(--radius-md);
        }

        .img-cover-fit {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-md);
        }

        /* ========== 背景区块 ========== */
        .bg-soft-gradient {
            background: var(--brand-gradient-soft);
        }

        .bg-white-block {
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 2rem;
        }

        /* ========== 数据高亮 ========== */
        .highlight-stat {
            font-size: 2.5rem;
            font-weight: 700;
            background: var(--brand-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
            line-height: 1.2;
        }

        .highlight-stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 0.2rem;
        }

        @media (max-width: 768px) {
            .highlight-stat {
                font-size: 1.8rem;
            }
        }

        /* ========== 分隔装饰 ========== */
        .divider-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--brand-orange);
            display: inline-block;
            margin: 0 0.4rem;
        }

/* roulang page: category3 */
:root {
            --brand-red: #D32F2F;
            --brand-orange: #F57C00;
            --brand-amber: #FFC107;
            --brand-gradient: linear-gradient(135deg, #D32F2F 0%, #F57C00 100%);
            --brand-gradient-hover: linear-gradient(135deg, #B71C1C 0%, #E65100 100%);
            --brand-gradient-soft: linear-gradient(135deg, rgba(211, 47, 47, 0.08) 0%, rgba(245, 124, 0, 0.08) 100%);
            --text-dark: #263238;
            --text-body: #455A64;
            --text-muted: #78909C;
            --bg-page: #FAFAFA;
            --bg-card: #FFFFFF;
            --bg-light: #ECEFF1;
            --bg-footer: #263238;
            --border-light: #CFD8DC;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 12px 36px rgba(0, 0, 0, 0.16);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 30px;
            --radius-full: 50px;
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --spacing-section: 4rem;
            --spacing-section-mobile: 2.5rem;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-stack);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--bg-page);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--brand-red);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--brand-orange);
            text-decoration: none;
        }
        a:focus-visible {
            outline: 2px solid var(--brand-orange);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            font-family: inherit;
        }

        .container {
            max-width: 1280px;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        /* ========== 导航栏 ========== */
        .navbar-custom {
            background: var(--bg-card);
            box-shadow: var(--shadow-sm);
            border-radius: 0 0 var(--radius-md) var(--radius-md);
            padding: 0.6rem 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: box-shadow var(--transition-normal);
        }
        .navbar-custom.scrolled {
            box-shadow: var(--shadow-md);
        }
        .navbar-brand-custom {
            font-size: 1.5rem;
            font-weight: 700;
            background: var(--brand-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .nav-category-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.45rem 0.9rem;
            border-radius: var(--radius-sm);
            background: #F5F5F5;
            color: var(--text-dark);
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
            white-space: nowrap;
            text-decoration: none;
        }
        .nav-category-btn:hover {
            background: var(--brand-gradient);
            color: #fff;
            border-color: transparent;
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }
        .nav-category-btn.active {
            background: var(--brand-gradient);
            color: #fff;
            border-color: transparent;
            font-weight: 600;
        }
        .nav-category-btn i {
            font-size: 0.85rem;
        }
        .nav-cta-btn {
            display: inline-block;
            padding: 0.5rem 1.5rem;
            border-radius: var(--radius-xl);
            background: var(--brand-gradient);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            border: none;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
            box-shadow: var(--shadow-sm);
        }
        .nav-cta-btn:hover {
            background: var(--brand-gradient-hover);
            color: #fff;
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .navbar-toggler-custom {
            border: 2px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 0.4rem 0.55rem;
            background: #fff;
            transition: all var(--transition-fast);
        }
        .navbar-toggler-custom:focus {
            box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.2);
            border-color: var(--brand-red);
        }
        .navbar-toggler-icon-custom {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-dark);
            position: relative;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        .navbar-toggler-icon-custom::before,
        .navbar-toggler-icon-custom::after {
            content: '';
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-dark);
            position: absolute;
            left: 0;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        .navbar-toggler-icon-custom::before {
            top: -6px;
        }
        .navbar-toggler-icon-custom::after {
            top: 6px;
        }
        .navbar-collapse-custom {
            gap: 0.5rem;
        }
        @media (max-width: 991px) {
            .navbar-collapse-custom {
                background: var(--bg-card);
                border-radius: var(--radius-md);
                padding: 1rem;
                margin-top: 0.5rem;
                box-shadow: var(--shadow-md);
            }
            .nav-category-btn {
                display: flex;
                width: 100%;
                justify-content: flex-start;
                padding: 0.6rem 1rem;
                margin-bottom: 0.3rem;
            }
            .nav-cta-btn {
                display: block;
                text-align: center;
                margin-top: 0.5rem;
            }
        }

        /* ========== 板块通用间距 ========== */
        .section-py {
            padding-top: var(--spacing-section);
            padding-bottom: var(--spacing-section);
        }
        @media (max-width: 768px) {
            .section-py {
                padding-top: var(--spacing-section-mobile);
                padding-bottom: var(--spacing-section-mobile);
            }
        }

        /* ========== 分类Hero ========== */
        .category-hero {
            background: var(--brand-gradient);
            padding: 3.5rem 0 3rem;
            position: relative;
            overflow: hidden;
            clip-path: ellipse(120% 100% at 50% 0%);
        }
        @media (max-width: 768px) {
            .category-hero {
                clip-path: ellipse(160% 95% at 50% 0%);
                padding: 2.5rem 0 2rem;
            }
        }
        .category-hero::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 280px;
            height: 280px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -60px;
            width: 200px;
            height: 200px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-hero .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.2);
            color: #fff;
            padding: 0.3rem 1rem;
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 1rem;
            backdrop-filter: blur(4px);
        }
        .category-hero h1 {
            font-size: 2.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.8rem;
            line-height: 1.3;
        }
        .category-hero .hero-subtitle {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.9);
            max-width: 650px;
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .category-hero h1 {
                font-size: 1.6rem;
            }
            .category-hero .hero-subtitle {
                font-size: 0.95rem;
            }
        }

        /* ========== 卡片系统 ========== */
        .card-custom {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            padding: 1.5rem;
            border: none;
            transition: all var(--transition-normal);
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        .card-custom:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .card-custom .card-top-accent {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--brand-gradient);
            border-radius: var(--radius-md) var(--radius-md) 0 0;
        }
        .card-custom .card-img-top-rounded {
            border-radius: var(--radius-md) var(--radius-md) 0 0;
            margin: -1.5rem -1.5rem 1.2rem -1.5rem;
            width: calc(100% + 3rem);
            object-fit: cover;
            height: 200px;
        }
        .card-custom h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 0.6rem;
        }
        .card-custom p {
            color: var(--text-body);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 0;
        }
        .card-custom .card-icon-circle {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--brand-gradient-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--brand-red);
            margin-bottom: 1rem;
            flex-shrink: 0;
        }

        /* ========== 数据徽章 ========== */
        .badge-data {
            display: inline-block;
            background: var(--brand-amber);
            color: var(--text-dark);
            padding: 0.25em 0.7em;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            white-space: nowrap;
            box-shadow: 0 2px 6px rgba(255, 193, 7, 0.3);
        }
        .badge-data-lg {
            font-size: 0.95rem;
            padding: 0.35em 0.9em;
            border-radius: 24px;
        }
        .badge-data-outline {
            background: transparent;
            border: 2px solid var(--brand-amber);
            color: var(--text-dark);
            box-shadow: none;
        }

        /* ========== 按钮系统 ========== */
        .btn-primary-custom {
            display: inline-block;
            padding: 0.6rem 2rem;
            border-radius: var(--radius-xl);
            background: var(--brand-gradient);
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
            box-shadow: var(--shadow-sm);
            cursor: pointer;
        }
        .btn-primary-custom:hover {
            background: var(--brand-gradient-hover);
            color: #fff;
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .btn-outline-custom {
            display: inline-block;
            padding: 0.55rem 1.8rem;
            border-radius: var(--radius-xl);
            border: 2px solid var(--brand-red);
            color: var(--brand-red);
            font-weight: 600;
            font-size: 0.95rem;
            background: transparent;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
            cursor: pointer;
        }
        .btn-outline-custom:hover {
            background: var(--brand-gradient);
            color: #fff;
            border-color: transparent;
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        /* ========== 搜索/筛选栏 ========== */
        .filter-bar {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 1rem 1.5rem;
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
            align-items: center;
            margin-bottom: 2rem;
        }
        .filter-bar .filter-tag {
            display: inline-block;
            padding: 0.35rem 0.9rem;
            border-radius: var(--radius-full);
            background: #F5F5F5;
            color: var(--text-body);
            font-size: 0.85rem;
            cursor: pointer;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
            white-space: nowrap;
        }
        .filter-bar .filter-tag:hover {
            border-color: var(--brand-red);
            color: var(--brand-red);
        }
        .filter-bar .filter-tag.active-filter {
            background: var(--brand-gradient);
            color: #fff;
            border-color: transparent;
            font-weight: 600;
        }
        .filter-bar .filter-search {
            padding: 0.45rem 1.2rem;
            border-radius: var(--radius-xl);
            border: 1px solid var(--border-light);
            font-size: 0.9rem;
            outline: none;
            transition: all var(--transition-fast);
            min-width: 200px;
            flex: 1;
            max-width: 300px;
        }
        .filter-bar .filter-search:focus {
            border-color: var(--brand-red);
            box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.1);
        }

        /* ========== 统计数字区 ========== */
        .stat-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            padding: 1.8rem 1.5rem;
            text-align: center;
            transition: all var(--transition-normal);
            border: none;
            height: 100%;
        }
        .stat-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .stat-card .stat-number {
            font-size: 2.5rem;
            font-weight: 700;
            background: var(--brand-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
            line-height: 1.2;
        }
        .stat-card .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 0.4rem;
        }

        /* ========== 对比卡片（推荐档高亮） ========== */
        .compare-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            padding: 2rem 1.5rem;
            border: 2px solid transparent;
            transition: all var(--transition-normal);
            height: 100%;
            position: relative;
        }
        .compare-card.featured {
            border-color: var(--brand-red);
            box-shadow: var(--shadow-lg);
            transform: scale(1.03);
            z-index: 2;
            background: #FFFBFB;
        }
        .compare-card.featured::before {
            content: '推荐';
            position: absolute;
            top: 12px;
            right: 16px;
            background: var(--brand-gradient);
            color: #fff;
            padding: 0.25em 0.8em;
            border-radius: var(--radius-full);
            font-size: 0.75rem;
            font-weight: 600;
            white-space: nowrap;
        }
        .compare-card h3 {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 0.8rem;
        }
        .compare-card .compare-price {
            font-size: 2rem;
            font-weight: 700;
            color: var(--brand-red);
            margin-bottom: 1rem;
        }
        .compare-card ul {
            list-style: none;
            padding: 0;
            margin: 0 0 1.5rem 0;
        }
        .compare-card ul li {
            padding: 0.4rem 0;
            color: var(--text-body);
            font-size: 0.9rem;
            border-bottom: 1px solid #f0f0f0;
        }
        .compare-card ul li i {
            color: var(--brand-red);
            margin-right: 0.4rem;
        }
        @media (max-width: 768px) {
            .compare-card.featured {
                transform: scale(1);
            }
        }

        /* ========== FAQ手风琴 ========== */
        .accordion-custom .accordion-item {
            border: none;
            margin-bottom: 0.8rem;
            border-radius: var(--radius-md) !important;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .accordion-custom .accordion-header button {
            background: var(--bg-card);
            color: var(--text-dark);
            font-weight: 600;
            font-size: 1rem;
            border-radius: var(--radius-md) !important;
            padding: 1rem 1.3rem;
            box-shadow: none;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
        }
        .accordion-custom .accordion-header button:not(.collapsed) {
            background: var(--brand-gradient-soft);
            color: var(--brand-red);
            border-color: rgba(211, 47, 47, 0.15);
            border-radius: var(--radius-md) var(--radius-md) 0 0 !important;
        }
        .accordion-custom .accordion-header button:focus {
            box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.15);
            border-color: var(--brand-red);
        }
        .accordion-custom .accordion-body {
            background: #fff;
            padding: 1.2rem 1.3rem;
            color: var(--text-body);
            line-height: 1.7;
            border-radius: 0 0 var(--radius-md) var(--radius-md);
        }
        .accordion-custom .accordion-button::after {
            transition: transform var(--transition-fast);
        }

        /* ========== CTA横幅 ========== */
        .cta-banner {
            background: var(--brand-gradient);
            border-radius: var(--radius-lg);
            padding: 2.5rem 2rem;
            text-align: center;
            color: #fff;
            box-shadow: var(--shadow-lg);
            position: relative;
            overflow: hidden;
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            top: -50px;
            right: -50px;
            width: 180px;
            height: 180px;
            background: rgba(255, 255, 255, 0.07);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-banner h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.6rem;
            position: relative;
            z-index: 1;
        }
        .cta-banner p {
            color: rgba(255, 255, 255, 0.9);
            font-size: 1rem;
            margin-bottom: 1.5rem;
            position: relative;
            z-index: 1;
        }
        .cta-banner .btn-cta-white {
            display: inline-block;
            padding: 0.65rem 2.2rem;
            border-radius: var(--radius-xl);
            background: #fff;
            color: var(--brand-red);
            font-weight: 700;
            font-size: 1rem;
            border: none;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
            position: relative;
            z-index: 1;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
        }
        .cta-banner .btn-cta-white:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
            color: var(--brand-red);
        }
        @media (max-width: 768px) {
            .cta-banner h2 {
                font-size: 1.4rem;
            }
            .cta-banner {
                padding: 2rem 1.2rem;
            }
        }

        /* ========== 页脚 ========== */
        .footer-custom {
            background: var(--bg-footer);
            color: #B0BEC5;
            padding: 3rem 0 1.5rem;
            font-size: 0.9rem;
        }
        .footer-custom h5 {
            color: #fff;
            font-weight: 600;
            font-size: 1.05rem;
            margin-bottom: 1rem;
        }
        .footer-custom ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-custom ul li {
            margin-bottom: 0.5rem;
        }
        .footer-custom ul li a {
            color: #B0BEC5;
            transition: color var(--transition-fast);
            text-decoration: none;
        }
        .footer-custom ul li a:hover {
            color: #fff;
            text-decoration: underline;
        }
        .footer-divider {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            margin: 2rem 0 1.2rem;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: #78909C;
        }
        .footer-bottom a {
            color: #90A4AE;
            text-decoration: none;
        }
        .footer-bottom a:hover {
            color: #fff;
            text-decoration: underline;
        }
        @media (max-width: 768px) {
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 0.5rem;
            }
        }

        /* ========== 场景卡片 ========== */
        .scene-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            transition: all var(--transition-normal);
            height: 100%;
        }
        .scene-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .scene-card .scene-img {
            height: 180px;
            object-fit: cover;
            width: 100%;
        }
        .scene-card .scene-body {
            padding: 1.3rem;
        }
        .scene-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 0.5rem;
        }
        .scene-card p {
            font-size: 0.9rem;
            color: var(--text-body);
            line-height: 1.6;
        }

        /* ========== 案例卡片 ========== */
        .case-card {
            background: #f9f9f9;
            border-radius: var(--radius-md);
            padding: 1.5rem;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            height: 100%;
            border-left: 4px solid transparent;
            border-image: var(--brand-gradient) 1;
            border-left-style: solid;
        }
        .case-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .case-card .case-quote {
            font-style: italic;
            color: var(--text-body);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 1rem;
        }
        .case-card .case-author {
            font-weight: 600;
            color: var(--text-dark);
            font-size: 0.9rem;
        }
        .case-card .case-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* ========== 响应式补充 ========== */
        @media (max-width: 768px) {
            .card-custom {
                padding: 1.2rem;
            }
            .card-custom .card-img-top-rounded {
                margin: -1.2rem -1.2rem 1rem -1.2rem;
                width: calc(100% + 2.4rem);
                height: 150px;
            }
            .stat-card .stat-number {
                font-size: 2rem;
            }
            .filter-bar {
                flex-direction: column;
                align-items: stretch;
                gap: 0.5rem;
            }
            .filter-bar .filter-search {
                max-width: 100%;
            }
            .category-hero h1 {
                font-size: 1.5rem;
            }
        }

        @media (max-width: 520px) {
            .card-custom .card-img-top-rounded {
                height: 130px;
            }
            .category-hero {
                padding: 2rem 0 1.5rem;
            }
            .category-hero h1 {
                font-size: 1.3rem;
            }
            .cta-banner h2 {
                font-size: 1.2rem;
            }
        }

/* roulang page: category2 */
:root {
            --brand-red: #D32F2F;
            --brand-orange: #F57C00;
            --brand-amber: #FFC107;
            --brand-gradient: linear-gradient(135deg, #D32F2F 0%, #F57C00 100%);
            --brand-gradient-hover: linear-gradient(135deg, #B71C1C 0%, #E65100 100%);
            --text-dark: #263238;
            --text-body: #455A64;
            --text-muted: #78909C;
            --bg-page: #FAFAFA;
            --bg-card: #FFFFFF;
            --bg-light: #ECEFF1;
            --bg-footer: #263238;
            --border-light: #CFD8DC;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 12px 36px rgba(0, 0, 0, 0.16);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 30px;
            --radius-full: 50px;
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --spacing-section: 4rem;
            --spacing-section-mobile: 2.5rem;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-stack);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--bg-page);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--brand-red);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--brand-orange);
            text-decoration: none;
        }

        a:focus-visible {
            outline: 2px solid var(--brand-orange);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            font-family: inherit;
        }

        .container {
            max-width: 1280px;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        /* ========== 导航栏 - 卡片化导航面板 ========== */
        .navbar-custom {
            background: var(--bg-card);
            box-shadow: var(--shadow-sm);
            border-radius: 0 0 var(--radius-md) var(--radius-md);
            padding: 0.6rem 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: box-shadow var(--transition-normal);
        }

        .navbar-custom.scrolled {
            box-shadow: var(--shadow-md);
        }

        .navbar-brand-custom {
            font-size: 1.5rem;
            font-weight: 700;
            background: var(--brand-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .nav-category-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.45rem 0.9rem;
            border-radius: var(--radius-sm);
            background: #F5F5F5;
            color: var(--text-dark);
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
            white-space: nowrap;
            text-decoration: none;
        }

        .nav-category-btn:hover {
            background: var(--brand-gradient);
            color: #fff;
            border-color: transparent;
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        .nav-category-btn.active {
            background: var(--brand-gradient);
            color: #fff;
            border-color: transparent;
            font-weight: 600;
        }

        .nav-category-btn i {
            font-size: 0.85rem;
        }

        .nav-cta-btn {
            display: inline-block;
            padding: 0.5rem 1.5rem;
            border-radius: var(--radius-xl);
            background: var(--brand-gradient);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            border: none;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
            box-shadow: var(--shadow-sm);
        }

        .nav-cta-btn:hover {
            background: var(--brand-gradient-hover);
            color: #fff;
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .navbar-toggler-custom {
            border: 2px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 0.4rem 0.55rem;
            background: #fff;
            transition: all var(--transition-fast);
        }

        .navbar-toggler-custom:focus {
            box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.2);
            border-color: var(--brand-red);
        }

        .navbar-toggler-icon-custom {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-dark);
            position: relative;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .navbar-toggler-icon-custom::before,
        .navbar-toggler-icon-custom::after {
            content: '';
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-dark);
            position: absolute;
            left: 0;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .navbar-toggler-icon-custom::before {
            top: -7px;
        }

        .navbar-toggler-icon-custom::after {
            top: 7px;
        }

        .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon-custom {
            background: transparent;
        }

        .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon-custom::before {
            top: 0;
            transform: rotate(45deg);
        }

        .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon-custom::after {
            top: 0;
            transform: rotate(-45deg);
        }

        .navbar-collapse-custom {
            background: var(--bg-card);
            border-radius: var(--radius-md);
        }

        @media (max-width: 991.98px) {
            .navbar-collapse-custom {
                padding: 1rem;
                margin-top: 0.5rem;
                box-shadow: var(--shadow-md);
            }
            .nav-category-btn {
                width: 100%;
                justify-content: flex-start;
                padding: 0.6rem 1rem;
                margin-bottom: 0.3rem;
                border-radius: var(--radius-sm);
            }
            .nav-cta-btn {
                width: 100%;
                text-align: center;
                margin-top: 0.5rem;
            }
        }

        /* ========== 按钮系统 ========== */
        .btn-primary-custom {
            display: inline-block;
            padding: 0.6rem 2rem;
            border-radius: var(--radius-xl);
            background: var(--brand-gradient);
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            transition: all var(--transition-normal);
            white-space: nowrap;
            text-decoration: none;
            box-shadow: var(--shadow-sm);
            cursor: pointer;
        }

        .btn-primary-custom:hover {
            background: var(--brand-gradient-hover);
            color: #fff;
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }

        .btn-outline-custom {
            display: inline-block;
            padding: 0.55rem 1.8rem;
            border-radius: var(--radius-xl);
            border: 2px solid var(--brand-red);
            color: var(--brand-red);
            font-weight: 600;
            font-size: 1rem;
            background: transparent;
            transition: all var(--transition-normal);
            white-space: nowrap;
            text-decoration: none;
            cursor: pointer;
        }

        .btn-outline-custom:hover {
            background: var(--brand-gradient);
            color: #fff;
            border-color: transparent;
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        /* ========== 卡片系统 ========== */
        .card-custom {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            padding: 1.5rem;
            transition: all var(--transition-normal);
            border: none;
            height: 100%;
            position: relative;
            overflow: hidden;
        }

        .card-custom:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }

        .card-custom.with-top-accent::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--brand-gradient);
            border-radius: var(--radius-md) var(--radius-md) 0 0;
        }

        .card-custom .card-img-top {
            border-radius: var(--radius-md) var(--radius-md) 0 0;
            margin: -1.5rem -1.5rem 1.5rem -1.5rem;
            width: calc(100% + 3rem);
            height: 200px;
            object-fit: cover;
        }

        /* ========== 数据徽章 ========== */
        .badge-custom {
            display: inline-block;
            padding: 0.25em 0.7em;
            border-radius: var(--radius-lg);
            background: var(--brand-amber);
            color: var(--text-dark);
            font-size: 0.85rem;
            font-weight: 600;
            white-space: nowrap;
            letter-spacing: 0.02em;
        }

        .badge-custom.accent-red {
            background: var(--brand-red);
            color: #fff;
        }

        .badge-custom.accent-gradient {
            background: var(--brand-gradient);
            color: #fff;
        }

        /* ========== 板块间距 ========== */
        .section-spacing {
            padding-top: var(--spacing-section);
            padding-bottom: var(--spacing-section);
        }

        @media (max-width: 767.98px) {
            .section-spacing {
                padding-top: var(--spacing-section-mobile);
                padding-bottom: var(--spacing-section-mobile);
            }
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .card-custom {
                padding: 1rem;
            }
            .card-custom .card-img-top {
                margin: -1rem -1rem 1rem -1rem;
                width: calc(100% + 2rem);
                height: 160px;
            }
        }

        /* ========== Hero区域 ========== */
        .hero-category {
            background: var(--brand-gradient);
            padding: 4rem 0;
            position: relative;
            overflow: hidden;
            min-height: 60vh;
            display: flex;
            align-items: center;
        }

        .hero-category::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -15%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            pointer-events: none;
        }

        .hero-category::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 350px;
            height: 350px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            pointer-events: none;
        }

        .hero-category .hero-title {
            font-size: 2.5rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 1rem;
            position: relative;
            z-index: 1;
        }

        .hero-category .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.9);
            line-height: 1.7;
            margin-bottom: 1.5rem;
            position: relative;
            z-index: 1;
            max-width: 600px;
        }

        .hero-category .hero-badge-row {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
            margin-bottom: 1.5rem;
            position: relative;
            z-index: 1;
        }

        .hero-category .hero-badge-item {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.5rem 1rem;
            border-radius: var(--radius-xl);
            background: rgba(255, 255, 255, 0.2);
            color: #fff;
            font-weight: 500;
            font-size: 0.9rem;
            backdrop-filter: blur(4px);
            border: 1px solid rgba(255, 255, 255, 0.25);
        }

        .hero-category .hero-badge-item i {
            color: var(--brand-amber);
            font-size: 0.85rem;
        }

        .hero-category .hero-image-wrap {
            position: relative;
            z-index: 1;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-xl);
        }

        .hero-category .hero-image-wrap img {
            width: 100%;
            height: auto;
            border-radius: var(--radius-md);
        }

        @media (max-width: 767.98px) {
            .hero-category {
                padding: 2.5rem 0;
                min-height: auto;
            }
            .hero-category .hero-title {
                font-size: 1.8rem;
            }
            .hero-category .hero-subtitle {
                font-size: 1rem;
            }
            .hero-category .hero-badge-row {
                gap: 0.5rem;
            }
            .hero-category .hero-badge-item {
                font-size: 0.8rem;
                padding: 0.4rem 0.75rem;
            }
        }

        /* ========== 权益卡片 ========== */
        .benefit-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 2rem 1.5rem;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            height: 100%;
            border: 1px solid var(--border-light);
            position: relative;
        }

        .benefit-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }

        .benefit-card .benefit-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: var(--brand-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.2rem;
            font-size: 1.5rem;
            color: #fff;
        }

        .benefit-card h4 {
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 0.6rem;
            font-size: 1.15rem;
        }

        .benefit-card p {
            color: var(--text-body);
            font-size: 0.9rem;
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ========== 流程步骤 ========== */
        .step-card {
            display: flex;
            align-items: flex-start;
            gap: 1.5rem;
            padding: 1.5rem;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            position: relative;
        }

        .step-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
        }

        .step-card .step-number {
            flex-shrink: 0;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--brand-gradient);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.3rem;
        }

        .step-card .step-content h4 {
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 0.4rem;
            font-size: 1.1rem;
        }

        .step-card .step-content p {
            color: var(--text-body);
            font-size: 0.9rem;
            margin-bottom: 0;
            line-height: 1.6;
        }

        /* ========== 用户评价卡片 ========== */
        .testimonial-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 1.8rem;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            height: 100%;
            border: 1px solid var(--bg-light);
        }

        .testimonial-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: transparent;
        }

        .testimonial-card .testimonial-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--brand-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 1rem;
            flex-shrink: 0;
        }

        .testimonial-card .testimonial-text {
            font-style: italic;
            color: var(--text-body);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 1rem;
        }

        .testimonial-card .testimonial-name {
            font-weight: 600;
            color: var(--text-dark);
            font-size: 0.9rem;
        }

        .testimonial-card .testimonial-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* ========== FAQ手风琴 ========== */
        .accordion-custom .accordion-item {
            border: none;
            border-radius: var(--radius-md) !important;
            margin-bottom: 0.8rem;
            background: var(--bg-card);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }

        .accordion-custom .accordion-header button {
            background: var(--bg-card);
            color: var(--text-dark);
            font-weight: 600;
            font-size: 1rem;
            padding: 1.2rem 1.5rem;
            border: none;
            box-shadow: none;
            border-radius: var(--radius-md) !important;
            transition: all var(--transition-fast);
            width: 100%;
            text-align: left;
            position: relative;
        }

        .accordion-custom .accordion-header button:not(.collapsed) {
            background: linear-gradient(135deg, rgba(211, 47, 47, 0.05) 0%, rgba(245, 124, 0, 0.05) 100%);
            color: var(--brand-red);
        }

        .accordion-custom .accordion-header button::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            right: 1.5rem;
            top: 50%;
            transform: translateY(-50%);
            transition: transform var(--transition-fast);
            font-size: 0.8rem;
            color: var(--text-muted);
            background: none;
            width: auto;
            height: auto;
        }

        .accordion-custom .accordion-header button:not(.collapsed)::after {
            transform: translateY(-50%) rotate(180deg);
            color: var(--brand-red);
        }

        .accordion-custom .accordion-body {
            padding: 0 1.5rem 1.5rem;
            color: var(--text-body);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        .accordion-custom .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.15);
            border-color: transparent;
        }

        /* ========== CTA横幅 ========== */
        .cta-banner-custom {
            background: var(--brand-gradient);
            border-radius: var(--radius-md);
            padding: 3rem 2rem;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-banner-custom::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 250px;
            height: 250px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            pointer-events: none;
        }

        .cta-banner-custom h2 {
            color: #fff;
            font-weight: 700;
            font-size: 2rem;
            margin-bottom: 0.8rem;
            position: relative;
            z-index: 1;
        }

        .cta-banner-custom p {
            color: rgba(255, 255, 255, 0.9);
            font-size: 1.05rem;
            margin-bottom: 1.5rem;
            position: relative;
            z-index: 1;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-banner-custom .btn-white-custom {
            display: inline-block;
            padding: 0.7rem 2.2rem;
            border-radius: var(--radius-xl);
            background: #fff;
            color: var(--brand-red);
            font-weight: 700;
            font-size: 1rem;
            border: none;
            transition: all var(--transition-normal);
            white-space: nowrap;
            text-decoration: none;
            box-shadow: var(--shadow-md);
            position: relative;
            z-index: 1;
        }

        .cta-banner-custom .btn-white-custom:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-xl);
            color: var(--brand-orange);
        }

        @media (max-width: 767.98px) {
            .cta-banner-custom {
                padding: 2rem 1.5rem;
            }
            .cta-banner-custom h2 {
                font-size: 1.5rem;
            }
        }

        /* ========== 页脚 ========== */
        .footer-custom {
            background: var(--bg-footer);
            color: #B0BEC5;
            padding: 3rem 0 1.5rem;
            font-size: 0.9rem;
        }

        .footer-custom h5 {
            color: #fff;
            font-weight: 600;
            font-size: 1.05rem;
            margin-bottom: 1rem;
            letter-spacing: 0.02em;
        }

        .footer-custom ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-custom ul li {
            margin-bottom: 0.5rem;
            line-height: 1.5;
        }

        .footer-custom ul li a {
            color: #B0BEC5;
            text-decoration: none;
            transition: color var(--transition-fast);
            font-size: 0.85rem;
        }

        .footer-custom ul li a:hover {
            color: #fff;
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .footer-divider {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            margin: 2rem 0 1.2rem;
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: #90A4AE;
        }

        .footer-bottom a {
            color: #90A4AE;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: #fff;
            text-decoration: underline;
        }

        @media (max-width: 767.98px) {
            .footer-custom {
                padding: 2rem 0 1rem;
                text-align: center;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 0.5rem;
                text-align: center;
            }
        }

        /* ========== 数据统计区块 ========== */
        .stats-row-custom {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            justify-content: center;
        }

        .stat-item-custom {
            text-align: center;
            padding: 1.5rem 2rem;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            min-width: 150px;
            flex: 1;
            transition: all var(--transition-normal);
            border: 1px solid var(--bg-light);
        }

        .stat-item-custom:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: transparent;
        }

        .stat-item-custom .stat-number {
            font-size: 2.5rem;
            font-weight: 700;
            background: var(--brand-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
            line-height: 1.1;
        }

        .stat-item-custom .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 0.3rem;
        }

        @media (max-width: 767.98px) {
            .stat-item-custom .stat-number {
                font-size: 1.8rem;
            }
            .stat-item-custom {
                padding: 1rem 1.2rem;
                min-width: 120px;
            }
        }

        /* ========== 资格说明区块 ========== */
        .requirement-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .requirement-list li {
            padding: 0.8rem 1rem;
            margin-bottom: 0.5rem;
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border-left: 4px solid var(--brand-orange);
            font-size: 0.95rem;
            color: var(--text-body);
            transition: all var(--transition-fast);
            display: flex;
            align-items: center;
            gap: 0.7rem;
        }

        .requirement-list li:hover {
            box-shadow: var(--shadow-sm);
            border-left-color: var(--brand-red);
        }

        .requirement-list li i {
            color: var(--brand-orange);
            font-size: 1rem;
            flex-shrink: 0;
        }

        /* ========== 场景卡片 ========== */
        .scene-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            height: 100%;
            border: 1px solid var(--bg-light);
        }

        .scene-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }

        .scene-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: var(--radius-md) var(--radius-md) 0 0;
        }

        .scene-card .scene-body {
            padding: 1.5rem;
        }

        .scene-card .scene-body h4 {
            font-weight: 600;
            color: var(--text-dark);
            font-size: 1.1rem;
            margin-bottom: 0.5rem;
        }

        .scene-card .scene-body p {
            color: var(--text-body);
            font-size: 0.9rem;
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ========== 区块标题 ========== */
        .section-title-custom {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.6rem;
            letter-spacing: 0.01em;
        }

        .section-subtitle-custom {
            font-size: 1.05rem;
            color: var(--text-muted);
            margin-bottom: 2.5rem;
            line-height: 1.6;
        }

        @media (max-width: 767.98px) {
            .section-title-custom {
                font-size: 1.5rem;
            }
            .section-subtitle-custom {
                font-size: 0.95rem;
                margin-bottom: 1.8rem;
            }
        }

/* roulang page: category6 */
:root {
            --brand-red: #D32F2F;
            --brand-orange: #F57C00;
            --brand-amber: #FFC107;
            --brand-gradient: linear-gradient(135deg, #D32F2F 0%, #F57C00 100%);
            --brand-gradient-hover: linear-gradient(135deg, #B71C1C 0%, #E65100 100%);
            --brand-gradient-soft: linear-gradient(135deg, rgba(211, 47, 47, 0.08) 0%, rgba(245, 124, 0, 0.08) 100%);
            --text-dark: #263238;
            --text-body: #455A64;
            --text-muted: #78909C;
            --bg-page: #FAFAFA;
            --bg-card: #FFFFFF;
            --bg-light: #ECEFF1;
            --bg-footer: #263238;
            --border-light: #CFD8DC;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 12px 36px rgba(0, 0, 0, 0.16);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 30px;
            --radius-full: 50px;
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --spacing-section: 4rem;
            --spacing-section-mobile: 2.5rem;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-stack);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--bg-page);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--brand-red);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--brand-orange);
            text-decoration: none;
        }
        a:focus-visible {
            outline: 2px solid var(--brand-orange);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            font-family: inherit;
        }

        .container {
            max-width: 1280px;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        /* ========== 导航栏 - 卡片化导航面板 ========== */
        .navbar-custom {
            background: var(--bg-card);
            box-shadow: var(--shadow-sm);
            border-radius: 0 0 var(--radius-md) var(--radius-md);
            padding: 0.6rem 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: box-shadow var(--transition-normal);
        }
        .navbar-custom.scrolled {
            box-shadow: var(--shadow-md);
        }
        .navbar-brand-custom {
            font-size: 1.5rem;
            font-weight: 700;
            background: var(--brand-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .nav-category-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.45rem 0.9rem;
            border-radius: var(--radius-sm);
            background: #F5F5F5;
            color: var(--text-dark);
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
            white-space: nowrap;
            text-decoration: none;
        }
        .nav-category-btn:hover {
            background: var(--brand-gradient);
            color: #fff;
            border-color: transparent;
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }
        .nav-category-btn.active {
            background: var(--brand-gradient);
            color: #fff;
            border-color: transparent;
            font-weight: 600;
        }
        .nav-category-btn i {
            font-size: 0.85rem;
        }
        .nav-cta-btn {
            display: inline-block;
            padding: 0.5rem 1.5rem;
            border-radius: var(--radius-xl);
            background: var(--brand-gradient);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            border: none;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
            box-shadow: var(--shadow-sm);
        }
        .nav-cta-btn:hover {
            background: var(--brand-gradient-hover);
            color: #fff;
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .navbar-toggler-custom {
            border: 2px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 0.4rem 0.55rem;
            background: #fff;
            transition: all var(--transition-fast);
        }
        .navbar-toggler-custom:focus {
            box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.2);
            border-color: var(--brand-red);
        }
        .navbar-toggler-icon-custom {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-dark);
            position: relative;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        .navbar-toggler-icon-custom::before,
        .navbar-toggler-icon-custom::after {
            content: '';
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-dark);
            position: absolute;
            left: 0;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        .navbar-toggler-icon-custom::before {
            top: -7px;
        }
        .navbar-toggler-icon-custom::after {
            top: 7px;
        }
        .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon-custom {
            background: transparent;
        }
        .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon-custom::before {
            top: 0;
            transform: rotate(45deg);
        }
        .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon-custom::after {
            top: 0;
            transform: rotate(-45deg);
        }
        .navbar-collapse-custom {
            background: var(--bg-card);
            border-radius: var(--radius-md);
        }

        /* ========== 按钮系统 ========== */
        .btn-primary-custom {
            display: inline-block;
            padding: 0.6rem 2rem;
            border-radius: var(--radius-xl);
            background: var(--brand-gradient);
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            transition: all var(--transition-normal);
            white-space: nowrap;
            text-decoration: none;
            box-shadow: var(--shadow-sm);
            cursor: pointer;
        }
        .btn-primary-custom:hover {
            background: var(--brand-gradient-hover);
            color: #fff;
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .btn-outline-custom {
            display: inline-block;
            padding: 0.55rem 1.8rem;
            border-radius: var(--radius-xl);
            border: 2px solid var(--brand-red);
            color: var(--brand-red);
            background: transparent;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition-normal);
            white-space: nowrap;
            text-decoration: none;
            cursor: pointer;
        }
        .btn-outline-custom:hover {
            background: var(--brand-gradient);
            color: #fff;
            border-color: transparent;
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .btn-amber-custom {
            display: inline-block;
            padding: 0.55rem 1.6rem;
            border-radius: var(--radius-xl);
            background: var(--brand-amber);
            color: var(--text-dark);
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            transition: all var(--transition-normal);
            white-space: nowrap;
            text-decoration: none;
            cursor: pointer;
            box-shadow: var(--shadow-sm);
        }
        .btn-amber-custom:hover {
            background: #FFB300;
            color: var(--text-dark);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        /* ========== 卡片系统 ========== */
        .card-custom {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            padding: 1.5rem;
            transition: all var(--transition-normal);
            border: 1px solid transparent;
            height: 100%;
        }
        .card-custom:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: var(--border-light);
        }
        .card-custom.with-top-accent {
            border-top: 4px solid transparent;
            border-image: var(--brand-gradient) 1;
            border-image-slice: 1;
        }
        .card-custom.with-gradient-bar {
            position: relative;
            overflow: hidden;
        }
        .card-custom.with-gradient-bar::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--brand-gradient);
            border-radius: var(--radius-md) var(--radius-md) 0 0;
        }

        /* ========== 徽章系统 ========== */
        .badge-custom {
            display: inline-block;
            padding: 0.2em 0.7em;
            border-radius: 20px;
            background: var(--brand-amber);
            color: var(--text-dark);
            font-size: 0.85rem;
            font-weight: 600;
            white-space: nowrap;
        }
        .badge-hot {
            background: #FF5252;
            color: #fff;
        }
        .badge-new {
            background: #4CAF50;
            color: #fff;
        }
        .badge-featured {
            background: var(--brand-gradient);
            color: #fff;
        }

        /* ========== 板块间距 ========== */
        .section-spacing {
            padding-top: var(--spacing-section);
            padding-bottom: var(--spacing-section);
        }
        .section-spacing-sm {
            padding-top: 2.5rem;
            padding-bottom: 2.5rem;
        }
        .section-spacing-lg {
            padding-top: 5rem;
            padding-bottom: 5rem;
        }

        /* ========== 小Hero ========== */
        .mini-hero {
            background: var(--brand-gradient);
            padding: 3rem 0;
            position: relative;
            overflow: hidden;
        }
        .mini-hero::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 280px;
            height: 280px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
            pointer-events: none;
        }
        .mini-hero::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 180px;
            height: 180px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 50%;
            pointer-events: none;
        }
        .mini-hero .hero-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.5rem;
            position: relative;
            z-index: 1;
        }
        .mini-hero .hero-subtitle {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.9);
            position: relative;
            z-index: 1;
            max-width: 700px;
        }

        /* ========== 统计数字区 ========== */
        .stat-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 1.8rem 1.5rem;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            border: 1px solid transparent;
        }
        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--border-light);
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 700;
            background: var(--brand-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
            line-height: 1.2;
        }
        .stat-label {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-top: 0.3rem;
        }

        /* ========== 话题卡片 ========== */
        .topic-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            border: 1px solid var(--border-light);
            display: flex;
            gap: 1rem;
            align-items: flex-start;
        }
        .topic-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
            border-color: var(--brand-red);
        }
        .topic-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--brand-gradient-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--brand-red);
            flex-shrink: 0;
        }
        .topic-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* ========== 精华帖卡片 ========== */
        .post-featured-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            height: 100%;
            border: 1px solid var(--border-light);
        }
        .post-featured-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .post-featured-card .post-img {
            height: 180px;
            object-fit: cover;
            width: 100%;
        }
        .post-featured-card .post-body {
            padding: 1.3rem;
        }
        .post-featured-card .post-tag {
            display: inline-block;
            padding: 0.15em 0.6em;
            border-radius: 12px;
            font-size: 0.78rem;
            font-weight: 600;
            background: var(--brand-gradient-soft);
            color: var(--brand-red);
        }

        /* ========== 活动卡片 ========== */
        .activity-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 1.8rem;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            border-left: 5px solid transparent;
            border-image: var(--brand-gradient) 1;
            border-image-slice: 1;
            height: 100%;
        }
        .activity-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .activity-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--brand-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: #fff;
            margin-bottom: 1rem;
        }

        /* ========== 等级卡片 ========== */
        .level-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            border: 2px solid transparent;
            height: 100%;
        }
        .level-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--brand-amber);
        }
        .level-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            margin: 0 auto 0.8rem;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
        }
        .level-bronze {
            background: linear-gradient(135deg, #CD7F32, #A0522D);
        }
        .level-silver {
            background: linear-gradient(135deg, #C0C0C0, #808080);
        }
        .level-gold {
            background: linear-gradient(135deg, #FFD700, #FFA000);
        }
        .level-diamond {
            background: linear-gradient(135deg, #B0E0E6, #4682B4);
        }

        /* ========== FAQ Accordion ========== */
        .accordion-custom .accordion-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md) !important;
            margin-bottom: 0.8rem;
            background: var(--bg-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .accordion-custom .accordion-button {
            font-weight: 600;
            color: var(--text-dark);
            background: var(--bg-card);
            padding: 1.1rem 1.5rem;
            border-radius: var(--radius-md) !important;
            transition: all var(--transition-fast);
            font-size: 1rem;
            box-shadow: none;
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            background: var(--brand-gradient-soft);
            color: var(--brand-red);
            box-shadow: none;
            border-bottom: 1px solid var(--border-light);
            border-radius: var(--radius-md) var(--radius-md) 0 0 !important;
        }
        .accordion-custom .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.15);
            border-color: var(--brand-red);
        }
        .accordion-custom .accordion-button::after {
            background-image: none;
            content: '+';
            font-size: 1.3rem;
            font-weight: 400;
            color: var(--brand-red);
            width: auto;
            height: auto;
            line-height: 1;
            transition: transform var(--transition-fast);
        }
        .accordion-custom .accordion-button:not(.collapsed)::after {
            content: '−';
            transform: rotate(0);
        }
        .accordion-custom .accordion-body {
            padding: 1.2rem 1.5rem;
            color: var(--text-body);
            line-height: 1.7;
            background: #fff;
        }

        /* ========== CTA 横幅 ========== */
        .cta-banner {
            background: var(--brand-gradient);
            border-radius: var(--radius-lg);
            padding: 2.5rem 2rem;
            text-align: center;
            color: #fff;
            box-shadow: var(--shadow-lg);
            position: relative;
            overflow: hidden;
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            top: -50px;
            right: -50px;
            width: 200px;
            height: 200px;
            background: rgba(255, 255, 255, 0.07);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-banner h3 {
            font-weight: 700;
            font-size: 1.8rem;
            position: relative;
            z-index: 1;
        }
        .cta-banner p {
            position: relative;
            z-index: 1;
            opacity: 0.9;
        }

        /* ========== 页脚 ========== */
        .footer-custom {
            background: var(--bg-footer);
            color: #B0BEC5;
            padding: 3rem 0 1.5rem;
            font-size: 0.9rem;
        }
        .footer-custom h5 {
            color: #fff;
            font-weight: 600;
            margin-bottom: 1rem;
            font-size: 1rem;
        }
        .footer-custom ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-custom ul li {
            margin-bottom: 0.45rem;
        }
        .footer-custom ul li a {
            color: #B0BEC5;
            transition: color var(--transition-fast);
            text-decoration: none;
        }
        .footer-custom ul li a:hover {
            color: #fff;
            text-decoration: underline;
        }
        .footer-divider {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            margin: 2rem 0 1.2rem;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: #90A4AE;
        }
        .footer-bottom a {
            color: #90A4AE;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .footer-bottom a:hover {
            color: #fff;
            text-decoration: underline;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .mini-hero .hero-title {
                font-size: 1.8rem;
            }
            .stat-number {
                font-size: 2rem;
            }
            .section-spacing {
                padding-top: 3rem;
                padding-bottom: 3rem;
            }
        }
        @media (max-width: 768px) {
            .mini-hero {
                padding: 2rem 0;
            }
            .mini-hero .hero-title {
                font-size: 1.5rem;
            }
            .mini-hero .hero-subtitle {
                font-size: 0.95rem;
            }
            .section-spacing {
                padding-top: var(--spacing-section-mobile);
                padding-bottom: var(--spacing-section-mobile);
            }
            .section-spacing-lg {
                padding-top: 3rem;
                padding-bottom: 3rem;
            }
            .card-custom {
                padding: 1.2rem;
                border-radius: var(--radius-sm);
            }
            .topic-card {
                flex-direction: column;
                gap: 0.6rem;
            }
            .cta-banner {
                padding: 1.8rem 1.2rem;
                border-radius: var(--radius-md);
            }
            .cta-banner h3 {
                font-size: 1.4rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 0.5rem;
            }
            .nav-category-btn {
                font-size: 0.82rem;
                padding: 0.4rem 0.7rem;
            }
            .navbar-collapse-custom {
                padding: 1rem;
                margin-top: 0.5rem;
                box-shadow: var(--shadow-md);
                border-radius: var(--radius-md);
            }
            .post-featured-card .post-img {
                height: 140px;
            }
            .stat-card {
                padding: 1.2rem 1rem;
            }
            .stat-number {
                font-size: 1.8rem;
            }
            .activity-card {
                padding: 1.2rem;
            }
            .level-card {
                padding: 1rem;
            }
            .level-icon {
                width: 48px;
                height: 48px;
                font-size: 1.3rem;
            }
        }
        @media (max-width: 520px) {
            .mini-hero .hero-title {
                font-size: 1.3rem;
            }
            .section-spacing {
                padding-top: 2rem;
                padding-bottom: 2rem;
            }
            .stat-number {
                font-size: 1.5rem;
            }
            .btn-primary-custom,
            .btn-outline-custom,
            .btn-amber-custom {
                padding: 0.5rem 1.2rem;
                font-size: 0.85rem;
                border-radius: var(--radius-xl);
            }
            .topic-card {
                padding: 1rem;
            }
            .accordion-custom .accordion-button {
                padding: 0.9rem 1rem;
                font-size: 0.9rem;
            }
            .accordion-custom .accordion-body {
                padding: 1rem;
            }
        }

/* roulang page: category4 */
:root {
            --brand-red: #D32F2F;
            --brand-orange: #F57C00;
            --brand-amber: #FFC107;
            --brand-gradient: linear-gradient(135deg, #D32F2F 0%, #F57C00 100%);
            --brand-gradient-hover: linear-gradient(135deg, #B71C1C 0%, #E65100 100%);
            --brand-gradient-soft: linear-gradient(135deg, rgba(211, 47, 47, 0.06) 0%, rgba(245, 124, 0, 0.06) 100%);
            --text-dark: #263238;
            --text-body: #455A64;
            --text-muted: #78909C;
            --bg-page: #FAFAFA;
            --bg-card: #FFFFFF;
            --bg-light: #ECEFF1;
            --bg-footer: #263238;
            --border-light: #CFD8DC;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 12px 36px rgba(0, 0, 0, 0.16);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 30px;
            --radius-full: 50px;
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --spacing-section: 4rem;
            --spacing-section-mobile: 2.5rem;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-stack);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--bg-page);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--brand-red);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--brand-orange);
            text-decoration: none;
        }

        a:focus-visible {
            outline: 2px solid var(--brand-orange);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            font-family: inherit;
        }

        .container {
            max-width: 1280px;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        /* ========== 导航栏 - 卡片化导航面板 ========== */
        .navbar-custom {
            background: var(--bg-card);
            box-shadow: var(--shadow-sm);
            border-radius: 0 0 var(--radius-md) var(--radius-md);
            padding: 0.6rem 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: box-shadow var(--transition-normal);
        }

        .navbar-custom.scrolled {
            box-shadow: var(--shadow-md);
        }

        .navbar-brand-custom {
            font-size: 1.5rem;
            font-weight: 700;
            background: var(--brand-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .nav-category-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.45rem 0.9rem;
            border-radius: var(--radius-sm);
            background: #F5F5F5;
            color: var(--text-dark);
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
            white-space: nowrap;
            text-decoration: none;
        }

        .nav-category-btn:hover {
            background: var(--brand-gradient);
            color: #fff;
            border-color: transparent;
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        .nav-category-btn.active {
            background: var(--brand-gradient);
            color: #fff;
            border-color: transparent;
            font-weight: 600;
        }

        .nav-category-btn i {
            font-size: 0.85rem;
        }

        .nav-cta-btn {
            display: inline-block;
            padding: 0.5rem 1.5rem;
            border-radius: var(--radius-xl);
            background: var(--brand-gradient);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            border: none;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
            box-shadow: var(--shadow-sm);
        }

        .nav-cta-btn:hover {
            background: var(--brand-gradient-hover);
            color: #fff;
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .navbar-toggler-custom {
            border: 2px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 0.4rem 0.55rem;
            background: #fff;
            transition: all var(--transition-fast);
        }

        .navbar-toggler-custom:focus {
            box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.2);
            border-color: var(--brand-red);
        }

        .navbar-toggler-icon-custom {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-dark);
            position: relative;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .navbar-toggler-icon-custom::before,
        .navbar-toggler-icon-custom::after {
            content: '';
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-dark);
            position: absolute;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .navbar-toggler-icon-custom::before {
            top: -7px;
        }

        .navbar-toggler-icon-custom::after {
            top: 7px;
        }

        .navbar-collapse-custom {
            gap: 0.8rem;
        }

        @media (max-width: 991px) {
            .navbar-collapse-custom {
                background: var(--bg-card);
                border-radius: var(--radius-md);
                padding: 1rem;
                margin-top: 0.6rem;
                box-shadow: var(--shadow-md);
            }
            .nav-category-btn {
                display: flex;
                width: 100%;
                margin-bottom: 0.3rem;
                justify-content: flex-start;
            }
            .nav-cta-btn {
                display: block;
                text-align: center;
                margin-top: 0.5rem;
            }
        }

        /* ========== 按钮系统 ========== */
        .btn-primary-custom {
            display: inline-block;
            padding: 0.6rem 2rem;
            border-radius: var(--radius-xl);
            background: var(--brand-gradient);
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            transition: all var(--transition-fast);
            text-decoration: none;
            box-shadow: var(--shadow-sm);
            cursor: pointer;
            text-align: center;
        }

        .btn-primary-custom:hover {
            background: var(--brand-gradient-hover);
            color: #fff;
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .btn-outline-custom {
            display: inline-block;
            padding: 0.55rem 1.8rem;
            border-radius: var(--radius-xl);
            border: 2px solid var(--brand-red);
            color: var(--brand-red);
            font-weight: 600;
            font-size: 0.95rem;
            background: transparent;
            transition: all var(--transition-fast);
            text-decoration: none;
            cursor: pointer;
            text-align: center;
        }

        .btn-outline-custom:hover {
            background: var(--brand-gradient);
            color: #fff;
            border-color: transparent;
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .btn-sm-custom {
            padding: 0.4rem 1.2rem;
            font-size: 0.85rem;
            border-radius: var(--radius-xl);
            background: var(--brand-gradient);
            color: #fff;
            font-weight: 600;
            border: none;
            transition: all var(--transition-fast);
            text-decoration: none;
            cursor: pointer;
            display: inline-block;
            box-shadow: var(--shadow-sm);
        }

        .btn-sm-custom:hover {
            background: var(--brand-gradient-hover);
            color: #fff;
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

        /* ========== 板块间距 ========== */
        .section-padding {
            padding: var(--spacing-section) 0;
        }

        .section-padding-sm {
            padding: 2.5rem 0;
        }

        /* ========== 小Hero横幅 ========== */
        .category-hero {
            background: var(--brand-gradient);
            padding: 3.5rem 0 3rem;
            position: relative;
            overflow: hidden;
            min-height: auto;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 300px;
            height: 300px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
            pointer-events: none;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 180px;
            height: 180px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 50%;
            pointer-events: none;
        }

        .category-hero .hero-content {
            position: relative;
            z-index: 2;
        }

        .category-hero .hero-badge {
            display: inline-block;
            background: var(--brand-amber);
            color: var(--text-dark);
            padding: 0.25em 0.8em;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.03em;
            margin-bottom: 1rem;
        }

        .category-hero h1 {
            font-size: 2.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.8rem;
            line-height: 1.3;
        }

        .category-hero .hero-subtitle {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.9);
            max-width: 700px;
            line-height: 1.7;
            margin-bottom: 1.5rem;
        }

        .category-hero .hero-stats {
            display: flex;
            gap: 2rem;
            flex-wrap: wrap;
        }

        .category-hero .hero-stat-item {
            background: rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-md);
            padding: 0.8rem 1.4rem;
            color: #fff;
            text-align: center;
            backdrop-filter: blur(4px);
        }

        .category-hero .hero-stat-num {
            font-size: 1.8rem;
            font-weight: 700;
            display: block;
            line-height: 1.2;
        }

        .category-hero .hero-stat-label {
            font-size: 0.8rem;
            opacity: 0.9;
            margin-top: 0.2rem;
            display: block;
        }

        /* ========== 卡片系统 ========== */
        .card-custom {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            overflow: hidden;
            border: none;
            height: 100%;
        }

        .card-custom:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }

        .card-custom .card-img-top {
            border-radius: var(--radius-md) var(--radius-md) 0 0;
            height: 200px;
            object-fit: cover;
            width: 100%;
        }

        .card-custom .card-body {
            padding: 1.5rem;
        }

        .card-custom .card-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.6rem;
            line-height: 1.4;
        }

        .card-custom .card-text {
            color: var(--text-body);
            font-size: 0.9rem;
            line-height: 1.6;
            margin-bottom: 1rem;
        }

        .card-custom .card-meta {
            display: flex;
            align-items: center;
            gap: 1rem;
            font-size: 0.8rem;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .card-top-accent {
            border-top: 4px solid transparent;
            border-image: var(--brand-gradient) 1;
            border-image-slice: 1;
        }

        /* 数据徽章 */
        .badge-custom {
            display: inline-block;
            background: var(--brand-amber);
            color: var(--text-dark);
            padding: 0.2em 0.7em;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 0.8rem;
            letter-spacing: 0.02em;
        }

        .badge-hot {
            background: var(--brand-red);
            color: #fff;
        }

        .badge-new {
            background: #4CAF50;
            color: #fff;
        }

        .badge-recommend {
            background: var(--brand-gradient);
            color: #fff;
        }

        /* ========== 板块标题 ========== */
        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.5rem;
            position: relative;
        }

        .section-title span {
            background: var(--brand-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            margin-bottom: 2.5rem;
            max-width: 650px;
        }

        .section-divider {
            width: 60px;
            height: 3px;
            background: var(--brand-gradient);
            border-radius: 3px;
            margin-bottom: 1.5rem;
        }

        /* ========== 步骤流程 ========== */
        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 2rem 1.5rem;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            border: 1px solid var(--border-light);
            position: relative;
            height: 100%;
        }

        .step-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: transparent;
        }

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--brand-gradient);
            color: #fff;
            font-weight: 700;
            font-size: 1.3rem;
            margin-bottom: 1rem;
        }

        .step-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.6rem;
        }

        .step-card p {
            font-size: 0.9rem;
            color: var(--text-body);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ========== 策略卡片 ========== */
        .strategy-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 1.8rem;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            height: 100%;
            border-left: 5px solid transparent;
            border-image: var(--brand-gradient) 1;
            border-image-slice: 1;
            border-top: none;
            border-right: none;
            border-bottom: none;
        }

        .strategy-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }

        .strategy-card .strategy-icon {
            font-size: 2rem;
            color: var(--brand-red);
            margin-bottom: 1rem;
            display: block;
        }

        .strategy-card h4 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.5rem;
        }

        .strategy-card p {
            font-size: 0.9rem;
            color: var(--text-body);
            line-height: 1.6;
            margin-bottom: 0;
        }

        .strategy-card .difficulty-tag {
            display: inline-block;
            font-size: 0.75rem;
            padding: 0.2em 0.6em;
            border-radius: var(--radius-full);
            font-weight: 600;
            margin-top: 0.8rem;
        }

        .diff-easy {
            background: #E8F5E9;
            color: #2E7D32;
        }

        .diff-medium {
            background: #FFF3E0;
            color: #E65100;
        }

        .diff-hard {
            background: #FFEBEE;
            color: #C62828;
        }

        /* ========== 规则表格区 ========== */
        .rule-table-wrapper {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .rule-table-wrapper table {
            margin-bottom: 0;
        }

        .rule-table-wrapper thead {
            background: var(--brand-gradient);
            color: #fff;
        }

        .rule-table-wrapper thead th {
            font-weight: 600;
            font-size: 0.9rem;
            padding: 1rem 1.2rem;
            border: none;
            vertical-align: middle;
        }

        .rule-table-wrapper tbody td {
            padding: 1rem 1.2rem;
            font-size: 0.9rem;
            color: var(--text-body);
            border-bottom: 1px solid var(--bg-light);
            vertical-align: middle;
        }

        .rule-table-wrapper tbody tr:hover {
            background: var(--brand-gradient-soft);
        }

        .rule-table-wrapper tbody tr:last-child td {
            border-bottom: none;
        }

        /* ========== FAQ手风琴 ========== */
        .accordion-custom .accordion-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md) !important;
            margin-bottom: 0.8rem;
            background: var(--bg-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .accordion-custom .accordion-header .accordion-button {
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-dark);
            background: var(--bg-card);
            border-radius: var(--radius-md) !important;
            padding: 1.1rem 1.5rem;
            box-shadow: none;
            transition: all var(--transition-fast);
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            background: var(--brand-gradient-soft);
            color: var(--brand-red);
            box-shadow: none;
            border-radius: var(--radius-md) var(--radius-md) 0 0 !important;
        }

        .accordion-custom .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.15);
            border-color: var(--brand-red);
        }

        .accordion-custom .accordion-button::after {
            background-image: none;
            content: '+';
            font-size: 1.4rem;
            font-weight: 400;
            color: var(--brand-red);
            width: auto;
            height: auto;
            line-height: 1;
            transition: transform var(--transition-fast);
        }

        .accordion-custom .accordion-button:not(.collapsed)::after {
            content: '−';
            transform: rotate(0deg);
        }

        .accordion-custom .accordion-body {
            padding: 1.2rem 1.5rem;
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.7;
            background: #fafafa;
            border-radius: 0 0 var(--radius-md) var(--radius-md);
        }

        /* ========== CTA横幅 ========== */
        .cta-banner {
            background: var(--brand-gradient);
            border-radius: var(--radius-lg);
            padding: 3rem 2.5rem;
            text-align: center;
            color: #fff;
            box-shadow: var(--shadow-lg);
            position: relative;
            overflow: hidden;
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: rgba(255, 255, 255, 0.07);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-banner h3 {
            font-size: 1.7rem;
            font-weight: 700;
            margin-bottom: 0.6rem;
            position: relative;
            z-index: 1;
        }

        .cta-banner p {
            font-size: 1rem;
            opacity: 0.9;
            margin-bottom: 1.5rem;
            position: relative;
            z-index: 1;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-banner .btn-cta-white {
            display: inline-block;
            padding: 0.7rem 2.5rem;
            border-radius: var(--radius-xl);
            background: #fff;
            color: var(--brand-red);
            font-weight: 700;
            font-size: 1rem;
            border: none;
            transition: all var(--transition-fast);
            text-decoration: none;
            box-shadow: var(--shadow-md);
            position: relative;
            z-index: 1;
        }

        .cta-banner .btn-cta-white:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-xl);
            color: var(--brand-red);
        }

        /* ========== 页脚 ========== */
        .footer-custom {
            background: var(--bg-footer);
            color: #B0BEC5;
            padding: 3.5rem 0 1.5rem;
            font-size: 0.9rem;
            line-height: 1.8;
        }

        .footer-custom h5 {
            color: #fff;
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: 1.2rem;
            letter-spacing: 0.02em;
        }

        .footer-custom ul {
            list-style: none;
            padding-left: 0;
            margin-bottom: 0;
        }

        .footer-custom ul li {
            margin-bottom: 0.4rem;
        }

        .footer-custom ul li a {
            color: #B0BEC5;
            transition: color var(--transition-fast);
            font-size: 0.85rem;
        }

        .footer-custom ul li a:hover {
            color: #fff;
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .footer-custom .footer-divider {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            margin: 2rem 0 1.5rem;
        }

        .footer-custom .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: #90A4AE;
        }

        .footer-custom .footer-bottom a {
            color: #90A4AE;
            font-size: 0.8rem;
            transition: color var(--transition-fast);
        }

        .footer-custom .footer-bottom a:hover {
            color: #fff;
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .footer-custom .footer-bottom span {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            flex-wrap: wrap;
        }

        /* ========== 工具推荐卡片 ========== */
        .tool-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 1.8rem;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            height: 100%;
            border: 1px solid var(--border-light);
        }

        .tool-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--brand-red);
        }

        .tool-card .tool-icon {
            font-size: 2.5rem;
            color: var(--brand-red);
            margin-bottom: 1rem;
            display: block;
        }

        .tool-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.5rem;
        }

        .tool-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .category-hero h1 {
                font-size: 1.8rem;
            }
            .category-hero .hero-subtitle {
                font-size: 1rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .card-custom .card-img-top {
                height: 160px;
            }
        }

        @media (max-width: 768px) {
            .section-padding {
                padding: var(--spacing-section-mobile) 0;
            }
            .category-hero {
                padding: 2.5rem 0 2rem;
            }
            .category-hero h1 {
                font-size: 1.5rem;
            }
            .category-hero .hero-stats {
                gap: 0.8rem;
            }
            .category-hero .hero-stat-item {
                padding: 0.6rem 1rem;
            }
            .category-hero .hero-stat-num {
                font-size: 1.3rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .card-custom .card-img-top {
                height: 180px;
            }
            .card-custom {
                border-radius: 12px;
            }
            .card-custom .card-body {
                padding: 1.2rem;
            }
            .cta-banner {
                padding: 2rem 1.5rem;
                border-radius: var(--radius-md);
            }
            .cta-banner h3 {
                font-size: 1.3rem;
            }
            .step-card {
                padding: 1.5rem 1rem;
            }
            .strategy-card {
                padding: 1.3rem;
            }
            .footer-custom .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.6rem;
            }
            .rule-table-wrapper {
                overflow-x: auto;
            }
            .rule-table-wrapper table {
                min-width: 600px;
            }
        }

        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 1.3rem;
            }
            .category-hero .hero-subtitle {
                font-size: 0.9rem;
            }
            .category-hero .hero-stats {
                flex-direction: column;
                gap: 0.5rem;
            }
            .section-title {
                font-size: 1.2rem;
            }
            .btn-primary-custom,
            .btn-outline-custom {
                padding: 0.5rem 1.5rem;
                font-size: 0.85rem;
            }
            .card-custom .card-img-top {
                height: 150px;
            }
        }

/* roulang page: category5 */
:root {
            --brand-red: #D32F2F;
            --brand-orange: #F57C00;
            --brand-amber: #FFC107;
            --brand-gradient: linear-gradient(135deg, #D32F2F 0%, #F57C00 100%);
            --brand-gradient-hover: linear-gradient(135deg, #B71C1C 0%, #E65100 100%);
            --brand-gradient-soft: linear-gradient(135deg, rgba(211, 47, 47, 0.08) 0%, rgba(245, 124, 0, 0.08) 100%);
            --text-dark: #263238;
            --text-body: #455A64;
            --text-muted: #78909C;
            --bg-page: #FAFAFA;
            --bg-card: #FFFFFF;
            --bg-light: #ECEFF1;
            --bg-footer: #263238;
            --border-light: #CFD8DC;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 12px 36px rgba(0, 0, 0, 0.16);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 30px;
            --radius-full: 50px;
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --spacing-section: 4rem;
            --spacing-section-mobile: 2.5rem;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-stack);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--bg-page);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--brand-red);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--brand-orange);
            text-decoration: none;
        }

        a:focus-visible {
            outline: 2px solid var(--brand-orange);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            font-family: inherit;
        }

        .container {
            max-width: 1280px;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        /* ========== 导航栏 - 卡片化导航面板 ========== */
        .navbar-custom {
            background: var(--bg-card);
            box-shadow: var(--shadow-sm);
            border-radius: 0 0 var(--radius-md) var(--radius-md);
            padding: 0.6rem 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: box-shadow var(--transition-normal);
        }

        .navbar-custom.scrolled {
            box-shadow: var(--shadow-md);
        }

        .navbar-brand-custom {
            font-size: 1.5rem;
            font-weight: 700;
            background: var(--brand-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
            letter-spacing: 0.02em;
            white-space: nowrap;
            text-decoration: none;
        }

        .navbar-brand-custom:hover {
            -webkit-text-fill-color: var(--brand-red);
            color: var(--brand-red);
        }

        .nav-category-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.45rem 0.9rem;
            border-radius: var(--radius-sm);
            background: #F5F5F5;
            color: var(--text-dark);
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
            white-space: nowrap;
            text-decoration: none;
        }

        .nav-category-btn:hover {
            background: var(--brand-gradient);
            color: #fff;
            border-color: transparent;
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        .nav-category-btn.active {
            background: var(--brand-gradient);
            color: #fff;
            border-color: transparent;
            font-weight: 600;
        }

        .nav-category-btn i {
            font-size: 0.85rem;
        }

        .nav-cta-btn {
            display: inline-block;
            padding: 0.5rem 1.5rem;
            border-radius: var(--radius-xl);
            background: var(--brand-gradient);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            border: none;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
            box-shadow: var(--shadow-sm);
        }

        .nav-cta-btn:hover {
            background: var(--brand-gradient-hover);
            color: #fff;
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .navbar-toggler-custom {
            border: 2px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 0.4rem 0.55rem;
            background: #fff;
            transition: all var(--transition-fast);
        }

        .navbar-toggler-custom:focus {
            box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.2);
            border-color: var(--brand-red);
        }

        .navbar-toggler-icon-custom {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-dark);
            position: relative;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .navbar-toggler-icon-custom::before,
        .navbar-toggler-icon-custom::after {
            content: '';
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-dark);
            position: absolute;
            left: 0;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .navbar-toggler-icon-custom::before {
            top: -7px;
        }

        .navbar-toggler-icon-custom::after {
            top: 7px;
        }

        .navbar-collapse-custom {
            gap: 0.3rem;
        }

        /* ========== 按钮系统 ========== */
        .btn-primary-custom {
            display: inline-block;
            padding: 0.6rem 2rem;
            border-radius: var(--radius-xl);
            background: var(--brand-gradient);
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            transition: all var(--transition-fast);
            text-decoration: none;
            box-shadow: var(--shadow-sm);
            cursor: pointer;
            text-align: center;
        }

        .btn-primary-custom:hover {
            background: var(--brand-gradient-hover);
            color: #fff;
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .btn-outline-custom {
            display: inline-block;
            padding: 0.55rem 1.8rem;
            border-radius: var(--radius-xl);
            background: transparent;
            color: var(--brand-red);
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid var(--brand-red);
            transition: all var(--transition-fast);
            text-decoration: none;
            cursor: pointer;
            text-align: center;
        }

        .btn-outline-custom:hover {
            background: var(--brand-gradient);
            color: #fff;
            border-color: transparent;
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .btn-sm-custom {
            padding: 0.4rem 1.2rem;
            font-size: 0.85rem;
            border-radius: var(--radius-xl);
        }

        /* ========== 卡片系统 ========== */
        .card-custom {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            transition: all var(--transition-normal);
            border: none;
            overflow: hidden;
            height: 100%;
        }

        .card-custom:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }

        .card-custom .card-body-custom {
            padding: 1.5rem;
        }

        .card-custom .card-img-top-custom {
            border-radius: var(--radius-md) var(--radius-md) 0 0;
            width: 100%;
            height: 200px;
            object-fit: cover;
        }

        .card-custom .card-top-accent {
            height: 4px;
            background: var(--brand-gradient);
            border-radius: 0;
        }

        /* ========== 数据徽章 ========== */
        .badge-data {
            display: inline-block;
            padding: 0.2em 0.7em;
            border-radius: 20px;
            background: var(--brand-amber);
            color: var(--text-dark);
            font-size: 0.85rem;
            font-weight: 600;
            white-space: nowrap;
        }

        .badge-hot {
            display: inline-block;
            padding: 0.2em 0.7em;
            border-radius: 20px;
            background: var(--brand-red);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 600;
            white-space: nowrap;
            animation: pulse-badge 2s ease-in-out infinite;
        }

        @keyframes pulse-badge {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.75;
            }
        }

        /* ========== Section 间距 ========== */
        .section-py {
            padding-top: var(--spacing-section);
            padding-bottom: var(--spacing-section);
        }

        .section-py-sm {
            padding-top: 2.5rem;
            padding-bottom: 2.5rem;
        }

        /* ========== Hero 分类横幅 ========== */
        .category-hero {
            background: var(--brand-gradient);
            position: relative;
            overflow: hidden;
            padding: 4rem 0;
            min-height: 320px;
            display: flex;
            align-items: center;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
            pointer-events: none;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -5%;
            width: 300px;
            height: 300px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 50%;
            pointer-events: none;
        }

        .category-hero .hero-content {
            position: relative;
            z-index: 2;
        }

        .category-hero .hero-badge {
            display: inline-block;
            padding: 0.3rem 1rem;
            background: rgba(255, 255, 255, 0.2);
            color: #fff;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 1rem;
            backdrop-filter: blur(4px);
        }

        .category-hero h1 {
            font-size: 2.5rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.8rem;
            letter-spacing: 0.01em;
            line-height: 1.3;
        }

        .category-hero .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.9);
            max-width: 650px;
            line-height: 1.7;
        }

        .search-box-custom {
            display: flex;
            gap: 0.5rem;
            max-width: 480px;
            margin-top: 1.5rem;
        }

        .search-box-custom input {
            flex: 1;
            padding: 0.7rem 1.2rem;
            border-radius: var(--radius-xl);
            border: 2px solid rgba(255, 255, 255, 0.5);
            background: rgba(255, 255, 255, 0.95);
            font-size: 0.95rem;
            color: var(--text-dark);
            transition: all var(--transition-fast);
            outline: none;
        }

        .search-box-custom input:focus {
            border-color: #fff;
            box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.3);
            background: #fff;
        }

        .search-box-custom input::placeholder {
            color: var(--text-muted);
        }

        /* ========== 攻略步骤卡片 ========== */
        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 1.8rem;
            box-shadow: var(--shadow-md);
            position: relative;
            transition: all var(--transition-normal);
            border-left: 4px solid transparent;
            border-image: var(--brand-gradient);
            border-image-slice: 1;
            height: 100%;
        }

        .step-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--brand-gradient);
            color: #fff;
            font-weight: 700;
            font-size: 1.2rem;
            margin-bottom: 1rem;
            flex-shrink: 0;
        }

        /* ========== 图文区块 ========== */
        .info-block {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: all var(--transition-normal);
        }

        .info-block:hover {
            box-shadow: var(--shadow-lg);
        }

        .info-block .info-img {
            width: 100%;
            height: 260px;
            object-fit: cover;
        }

        .info-block .info-body {
            padding: 1.5rem;
        }

        /* ========== FAQ 手风琴 ========== */
        .accordion-custom .accordion-item {
            border: none;
            margin-bottom: 0.8rem;
            background: var(--bg-card);
            border-radius: var(--radius-md) !important;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }

        .accordion-custom .accordion-button {
            background: var(--bg-card);
            color: var(--text-dark);
            font-weight: 600;
            font-size: 1.05rem;
            padding: 1.1rem 1.5rem;
            border-radius: var(--radius-md) !important;
            box-shadow: none;
            transition: all var(--transition-fast);
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            background: var(--brand-gradient-soft);
            color: var(--brand-red);
            box-shadow: none;
        }

        .accordion-custom .accordion-button::after {
            background-image: none;
            content: '+';
            font-size: 1.4rem;
            font-weight: 300;
            color: var(--brand-red);
            width: auto;
            height: auto;
            line-height: 1;
            transition: transform var(--transition-fast);
        }

        .accordion-custom .accordion-button:not(.collapsed)::after {
            content: '−';
            transform: rotate(0);
        }

        .accordion-custom .accordion-body {
            padding: 1rem 1.5rem 1.5rem;
            color: var(--text-body);
            line-height: 1.7;
        }

        /* ========== CTA 横幅 ========== */
        .cta-banner {
            background: var(--brand-gradient);
            border-radius: var(--radius-md);
            padding: 3rem 2.5rem;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -5%;
            width: 200px;
            height: 200px;
            background: rgba(255, 255, 255, 0.07);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-banner h2 {
            color: #fff;
            font-weight: 700;
            font-size: 2rem;
            position: relative;
            z-index: 1;
        }

        .cta-banner p {
            color: rgba(255, 255, 255, 0.9);
            font-size: 1.1rem;
            position: relative;
            z-index: 1;
            max-width: 600px;
            margin: 0 auto 1.5rem;
        }

        .cta-banner .btn-cta-white {
            display: inline-block;
            padding: 0.7rem 2.2rem;
            border-radius: var(--radius-xl);
            background: #fff;
            color: var(--brand-red);
            font-weight: 700;
            font-size: 1rem;
            border: none;
            transition: all var(--transition-fast);
            text-decoration: none;
            position: relative;
            z-index: 1;
            box-shadow: var(--shadow-md);
        }

        .cta-banner .btn-cta-white:hover {
            background: #fff;
            color: var(--brand-orange);
            box-shadow: var(--shadow-xl);
            transform: translateY(-3px);
        }

        /* ========== 页脚 ========== */
        .footer-custom {
            background: var(--bg-footer);
            color: #B0BEC5;
            padding: 3rem 0 1.5rem;
            font-size: 0.9rem;
        }

        .footer-custom h5 {
            color: #fff;
            font-weight: 600;
            font-size: 1.05rem;
            margin-bottom: 1rem;
        }

        .footer-custom ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-custom ul li {
            margin-bottom: 0.5rem;
        }

        .footer-custom ul li a {
            color: #B0BEC5;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-custom ul li a:hover {
            color: #fff;
            text-decoration: underline;
        }

        .footer-divider {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            margin: 1.5rem 0;
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 0.8rem;
            font-size: 0.8rem;
            color: #90A4AE;
        }

        .footer-bottom a {
            color: #90A4AE;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: #fff;
            text-decoration: underline;
        }

        /* ========== 特色标签 ========== */
        .tag-custom {
            display: inline-block;
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            background: #F5F5F5;
            color: var(--text-body);
            font-size: 0.8rem;
            font-weight: 500;
            margin: 0.2rem;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
            cursor: default;
        }

        .tag-custom:hover {
            background: var(--brand-gradient-soft);
            border-color: var(--brand-red);
            color: var(--brand-red);
        }

        .tag-custom.active-tag {
            background: var(--brand-gradient);
            color: #fff;
            border-color: transparent;
            font-weight: 600;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .category-hero h1 {
                font-size: 2rem;
            }
            .category-hero {
                padding: 3rem 0;
                min-height: 260px;
            }
            .section-py {
                padding-top: 2.5rem;
                padding-bottom: 2.5rem;
            }
            .info-block .info-img {
                height: 200px;
            }
        }

        @media (max-width: 768px) {
            .category-hero h1 {
                font-size: 1.7rem;
            }
            .category-hero .hero-subtitle {
                font-size: 1rem;
            }
            .category-hero {
                padding: 2.5rem 0;
                min-height: auto;
            }
            .section-py {
                padding-top: var(--spacing-section-mobile);
                padding-bottom: var(--spacing-section-mobile);
            }
            .search-box-custom {
                flex-direction: column;
                max-width: 100%;
            }
            .search-box-custom input {
                width: 100%;
            }
            .cta-banner {
                padding: 2rem 1.5rem;
            }
            .cta-banner h2 {
                font-size: 1.5rem;
            }
            .card-custom .card-img-top-custom {
                height: 160px;
            }
            .info-block .info-img {
                height: 180px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 0.5rem;
            }
            .nav-category-btn {
                font-size: 0.85rem;
                padding: 0.4rem 0.7rem;
            }
            .navbar-collapse-custom {
                padding-top: 0.8rem;
                gap: 0.2rem;
            }
        }

        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 1.4rem;
            }
            .category-hero {
                padding: 2rem 0;
            }
            .step-card {
                padding: 1.2rem;
            }
            .accordion-custom .accordion-button {
                font-size: 0.95rem;
                padding: 0.9rem 1.2rem;
            }
        }