/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0f1b3d;
            --primary-light: #1a2d6e;
            --primary-dark: #0a122e;
            --accent: #d4a84b;
            --accent-light: #e8c06a;
            --accent-dark: #b8923a;
            --bg-white: #ffffff;
            --bg-light: #f5f7fb;
            --bg-dark: #0a122e;
            --text-dark: #1a1a2e;
            --text-body: #4a4a6a;
            --text-light: #8a8aaa;
            --text-white: #ffffff;
            --border-color: #e8ecf4;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(15, 27, 61, 0.06);
            --shadow-md: 0 8px 32px rgba(15, 27, 61, 0.10);
            --shadow-lg: 0 20px 60px rgba(15, 27, 61, 0.14);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --transition: 0.30s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        body {
            font-family: var(--font-sans);
            color: var(--text-body);
            background: var(--bg-white);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            outline: none;
            transition: var(--transition);
        }
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        ul,
        ol {
            padding-left: 0;
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-dark);
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.01em;
        }

        /* ===== 容器 ===== */
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }
        }

        /* ===== 导航 ===== */
        .navbar-main {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-color);
            padding: 0;
            min-height: 72px;
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: var(--transition);
        }
        .navbar-main .navbar-brand {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.02em;
            padding: 12px 0;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .navbar-main .navbar-brand .brand-dot {
            display: inline-block;
            width: 10px;
            height: 10px;
            background: var(--accent);
            border-radius: 50%;
            margin-right: 4px;
        }
        .navbar-main .navbar-brand:hover {
            color: var(--primary);
        }
        .navbar-main .nav-link {
            color: var(--text-body) !important;
            font-weight: 500;
            font-size: 1rem;
            padding: 24px 18px !important;
            position: relative;
            transition: var(--transition);
        }
        .navbar-main .nav-link:hover,
        .navbar-main .nav-link:focus {
            color: var(--primary) !important;
        }
        .navbar-main .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 18px;
            right: 18px;
            height: 3px;
            background: var(--accent);
            border-radius: 3px 3px 0 0;
            transform: scaleX(0);
            transition: var(--transition);
        }
        .navbar-main .nav-link:hover::after,
        .navbar-main .nav-link.active::after {
            transform: scaleX(1);
        }
        .navbar-main .nav-link.active {
            color: var(--primary) !important;
            font-weight: 600;
        }
        .navbar-main .navbar-toggler {
            border: none;
            padding: 8px 10px;
            color: var(--primary);
            font-size: 1.4rem;
        }
        .navbar-main .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--accent);
        }
        .navbar-main .nav-cta {
            background: var(--primary);
            color: var(--text-white) !important;
            border-radius: var(--radius-sm);
            padding: 10px 24px !important;
            margin: 14px 0 14px 16px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
        }
        .navbar-main .nav-cta:hover {
            background: var(--accent);
            color: var(--primary) !important;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }
        .navbar-main .nav-cta::after {
            display: none;
        }
        @media (max-width: 991px) {
            .navbar-main {
                min-height: 64px;
            }
            .navbar-main .navbar-brand {
                font-size: 1.35rem;
                padding: 10px 0;
            }
            .navbar-main .nav-link {
                padding: 14px 16px !important;
                border-bottom: 1px solid var(--border-color);
            }
            .navbar-main .nav-link::after {
                display: none;
            }
            .navbar-main .nav-link.active {
                background: rgba(212, 168, 75, 0.08);
                border-left: 3px solid var(--accent);
            }
            .navbar-main .nav-cta {
                margin: 8px 16px 16px;
                text-align: center;
            }
        }

        /* ===== Hero 首屏 ===== */
        .hero-section {
            position: relative;
            min-height: 92vh;
            display: flex;
            align-items: center;
            background: var(--primary-dark);
            background-image: linear-gradient(135deg, rgba(15, 27, 61, 0.92) 0%, rgba(10, 18, 46, 0.88) 100%), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center center;
            background-repeat: no-repeat;
            color: var(--text-white);
            padding: 100px 0 80px;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 160px;
            background: linear-gradient(to top, var(--bg-white), transparent);
            pointer-events: none;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(212, 168, 75, 0.18);
            border: 1px solid rgba(212, 168, 75, 0.30);
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 0.9rem;
            color: var(--accent-light);
            font-weight: 500;
            backdrop-filter: blur(4px);
            margin-bottom: 24px;
        }
        .hero-badge i {
            font-size: 0.8rem;
        }
        .hero-title {
            font-size: 3.6rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.15;
            letter-spacing: -0.03em;
            margin-bottom: 24px;
        }
        .hero-title .highlight {
            color: var(--accent);
            position: relative;
        }
        .hero-subtitle {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            line-height: 1.8;
            margin-bottom: 36px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .btn-hero-primary {
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 700;
            padding: 16px 40px;
            border-radius: var(--radius-sm);
            border: none;
            font-size: 1.05rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .btn-hero-primary:hover {
            background: var(--accent-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 40px rgba(212, 168, 75, 0.35);
        }
        .btn-hero-secondary {
            background: transparent;
            color: var(--text-white);
            font-weight: 500;
            padding: 16px 32px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.25);
            font-size: 1.05rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .btn-hero-secondary:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-white);
            border-color: rgba(255, 255, 255, 0.40);
        }
        .hero-stats {
            display: flex;
            gap: 48px;
            margin-top: 60px;
            flex-wrap: wrap;
        }
        .hero-stat-item {
            display: flex;
            flex-direction: column;
        }
        .hero-stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
        }
        .hero-stat-number .accent {
            color: var(--accent);
        }
        .hero-stat-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
            font-weight: 400;
        }
        @media (max-width: 991px) {
            .hero-section {
                min-height: 70vh;
                padding: 80px 0 60px;
            }
            .hero-title {
                font-size: 2.6rem;
            }
            .hero-subtitle {
                font-size: 1.05rem;
            }
            .hero-stats {
                gap: 28px;
            }
            .hero-stat-number {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 576px) {
            .hero-title {
                font-size: 2rem;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .btn-hero-primary,
            .btn-hero-secondary {
                width: 100%;
                justify-content: center;
            }
            .hero-stats {
                gap: 20px;
                flex-direction: column;
            }
        }

        /* ===== 板块通用 ===== */
        .section-padding {
            padding: 100px 0;
        }
        .section-padding-sm {
            padding: 60px 0;
        }
        .section-title {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-light);
            max-width: 640px;
            margin: 0 auto 48px;
            line-height: 1.7;
        }
        .section-label {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent-dark);
            background: rgba(212, 168, 75, 0.10);
            padding: 6px 18px;
            border-radius: 50px;
            margin-bottom: 16px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 60px 0;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .section-subtitle {
                font-size: 1rem;
                margin-bottom: 32px;
            }
        }

        /* ===== 平台简介板块 ===== */
        .about-section {
            background: var(--bg-light);
        }
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .about-image-wrap {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .about-image-wrap img {
            width: 100%;
            height: 420px;
            object-fit: cover;
            transition: var(--transition);
        }
        .about-image-wrap:hover img {
            transform: scale(1.02);
        }
        .about-content .lead {
            font-size: 1.15rem;
            color: var(--text-dark);
            font-weight: 500;
            margin-bottom: 20px;
        }
        .about-content p {
            margin-bottom: 16px;
            color: var(--text-body);
        }
        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-top: 28px;
        }
        .about-feature-item {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.95rem;
            color: var(--text-body);
        }
        .about-feature-item i {
            color: var(--accent);
            font-size: 1rem;
            width: 20px;
            text-align: center;
        }
        @media (max-width: 991px) {
            .about-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .about-image-wrap img {
                height: 300px;
            }
            .about-features {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 分类入口 ===== */
        .category-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 28px;
        }
        .category-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .category-card .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .category-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .category-card:hover .card-img img {
            transform: scale(1.05);
        }
        .category-card .card-img .overlay-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--accent);
            color: var(--primary-dark);
            font-size: 0.8rem;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 50px;
        }
        .category-card .card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .category-card .card-body h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-dark);
        }
        .category-card .card-body p {
            font-size: 0.95rem;
            color: var(--text-light);
            flex: 1;
            margin-bottom: 16px;
        }
        .category-card .card-footer-link {
            color: var(--primary-light);
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .category-card .card-footer-link:hover {
            color: var(--accent);
            gap: 12px;
        }

        /* ===== 最新资讯 ===== */
        .news-section {
            background: var(--bg-light);
        }
        .news-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .news-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 28px 32px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .news-item:hover {
            box-shadow: var(--shadow-md);
            border-color: transparent;
            transform: translateY(-2px);
        }
        .news-item .meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.85rem;
            color: var(--text-light);
            margin-bottom: 12px;
        }
        .news-item .meta .badge-cat {
            background: rgba(212, 168, 75, 0.12);
            color: var(--accent-dark);
            font-weight: 600;
            padding: 3px 14px;
            border-radius: 50px;
            font-size: 0.78rem;
        }
        .news-item .meta .date {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .news-item h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .news-item h3 a {
            color: inherit;
        }
        .news-item h3 a:hover {
            color: var(--primary-light);
        }
        .news-item .excerpt {
            font-size: 0.95rem;
            color: var(--text-light);
            flex: 1;
            margin-bottom: 12px;
        }
        .news-item .read-more {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--primary-light);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .news-item .read-more:hover {
            color: var(--accent);
            gap: 12px;
        }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 24px;
            color: var(--text-light);
            font-size: 1.05rem;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-color);
        }
        @media (max-width: 991px) {
            .news-list {
                grid-template-columns: 1fr;
            }
            .news-item {
                padding: 20px 24px;
            }
        }

        /* ===== 核心数据 ===== */
        .stats-section {
            background: var(--primary-dark);
            background-image: linear-gradient(135deg, rgba(15, 27, 61, 0.95) 0%, rgba(10, 18, 46, 0.92) 100%), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            color: var(--text-white);
        }
        .stats-section .section-title {
            color: var(--text-white);
        }
        .stats-section .section-subtitle {
            color: rgba(255, 255, 255, 0.65);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }
        .stat-card {
            padding: 32px 16px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(4px);
            transition: var(--transition);
        }
        .stat-card:hover {
            background: rgba(255, 255, 255, 0.10);
            transform: translateY(-4px);
        }
        .stat-card .icon {
            font-size: 2.2rem;
            color: var(--accent);
            margin-bottom: 16px;
        }
        .stat-card .number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
        }
        .stat-card .number .suffix {
            font-size: 1.6rem;
            color: var(--accent);
        }
        .stat-card .label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 8px;
        }
        @media (max-width: 991px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .stat-card .number {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 576px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stat-card {
                padding: 20px 12px;
            }
            .stat-card .number {
                font-size: 1.8rem;
            }
        }

        /* ===== 服务特色 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 36px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            text-align: center;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
            border-color: transparent;
        }
        .feature-card .icon-wrap {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: rgba(212, 168, 75, 0.10);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.8rem;
            color: var(--accent);
            transition: var(--transition);
        }
        .feature-card:hover .icon-wrap {
            background: var(--accent);
            color: var(--primary-dark);
        }
        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-dark);
        }
        .feature-card p {
            font-size: 0.95rem;
            color: var(--text-light);
            margin-bottom: 0;
        }
        @media (max-width: 991px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
            .feature-card {
                padding: 28px 20px;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-light);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            padding: 20px 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            color: var(--text-dark);
            font-size: 1.05rem;
            gap: 16px;
            user-select: none;
            transition: var(--transition);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }
        .faq-question:hover {
            color: var(--primary-light);
        }
        .faq-question .icon {
            font-size: 1.2rem;
            color: var(--accent);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-question[aria-expanded="true"] .icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 28px 20px;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }
        .faq-answer.show {
            display: block;
        }
        @media (max-width: 576px) {
            .faq-question {
                padding: 16px 18px;
                font-size: 0.95rem;
            }
            .faq-answer {
                padding: 0 18px 16px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary);
            background-image: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 80px 0;
            text-align: center;
            color: var(--text-white);
        }
        .cta-section h2 {
            color: var(--text-white);
            font-size: 2.4rem;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.1rem;
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .btn-cta {
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 700;
            padding: 16px 48px;
            border-radius: var(--radius-sm);
            border: none;
            font-size: 1.1rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .btn-cta:hover {
            background: var(--accent-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 40px rgba(212, 168, 75, 0.30);
        }
        @media (max-width: 576px) {
            .cta-section {
                padding: 50px 0;
            }
            .cta-section h2 {
                font-size: 1.8rem;
            }
            .btn-cta {
                padding: 14px 32px;
                font-size: 1rem;
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== 页脚 ===== */
        .footer-main {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 0;
            border-top: 4px solid var(--accent);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo-text {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-white);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 16px;
        }
        .footer-brand .logo-text .dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            background: var(--accent);
            border-radius: 50%;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
            max-width: 320px;
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 20px;
            letter-spacing: 0.02em;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            padding: 24px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.5);
            font-size: 1rem;
            transition: var(--transition);
        }
        .footer-social a:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(212, 168, 75, 0.10);
        }
        @media (max-width: 991px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 576px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 回到顶部 ===== */
        .back-to-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--text-white);
            border: none;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-md);
            cursor: pointer;
            opacity: 0;
            visibility: hidden;
            transform: translateY(20px);
            transition: var(--transition);
            z-index: 1040;
        }
        .back-to-top.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .back-to-top:hover {
            background: var(--accent);
            color: var(--primary-dark);
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }

        /* ===== 辅助 ===== */
        .text-accent {
            color: var(--accent);
        }
        .bg-accent-soft {
            background: rgba(212, 168, 75, 0.06);
        }
        .rounded-custom {
            border-radius: var(--radius-md);
        }
        .shadow-hover {
            transition: var(--transition);
        }
        .shadow-hover:hover {
            box-shadow: var(--shadow-md);
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 768px) {
            .section-title {
                font-size: 1.6rem;
            }
            .hero-title {
                font-size: 2rem;
            }
            .hero-section {
                min-height: 60vh;
                padding: 60px 0 40px;
            }
            .hero-stats {
                margin-top: 32px;
            }
            .hero-stat-number {
                font-size: 1.5rem;
            }
            .btn-hero-primary,
            .btn-hero-secondary {
                padding: 12px 24px;
                font-size: 0.95rem;
            }
            .about-image-wrap img {
                height: 220px;
            }
            .stat-card .number {
                font-size: 1.8rem;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 520px) {
            .container-custom {
                padding: 0 12px;
            }
            .section-padding {
                padding: 40px 0;
            }
            .hero-title {
                font-size: 1.7rem;
            }
            .hero-subtitle {
                font-size: 0.95rem;
            }
            .category-cards {
                grid-template-columns: 1fr;
            }
            .news-item {
                padding: 16px 18px;
            }
            .news-item h3 {
                font-size: 1.05rem;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-card {
                padding: 16px 8px;
            }
            .stat-card .number {
                font-size: 1.5rem;
            }
            .stat-card .icon {
                font-size: 1.6rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .back-to-top {
                bottom: 20px;
                right: 20px;
                width: 40px;
                height: 40px;
                font-size: 1rem;
            }
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a2a6c;
            --primary-light: #2d4a8e;
            --primary-dark: #0f1a4a;
            --secondary: #e8b830;
            --secondary-light: #f0d060;
            --accent: #f25a2a;
            --bg-light: #f8f9fc;
            --bg-dark: #0f1a2e;
            --bg-card: #ffffff;
            --text-dark: #1a1a2e;
            --text-body: #3d3d5c;
            --text-weak: #7a7a9a;
            --text-white: #f0f0f5;
            --border-light: #e2e5f0;
            --border-focus: #2d4a8e;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(26, 42, 108, 0.06);
            --shadow-md: 0 8px 30px rgba(26, 42, 108, 0.10);
            --shadow-lg: 0 20px 60px rgba(26, 42, 108, 0.14);
            --shadow-hover: 0 16px 48px rgba(26, 42, 108, 0.18);
            --transition: all 0.30s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        a:focus-visible {
            outline: 3px solid var(--border-focus);
            outline-offset: 2px;
            border-radius: 4px;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-dark);
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.01em;
        }

        /* ===== Container ===== */
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }
        }

        /* ===== Navbar ===== */
        .navbar-main {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            padding: 0;
            min-height: 72px;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: var(--transition);
        }
        .navbar-main .navbar-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 0;
        }
        .navbar-main .navbar-brand .brand-dot,
        .logo-text .dot {
            display: inline-block;
            width: 12px;
            height: 12px;
            background: var(--secondary);
            border-radius: 50%;
            flex-shrink: 0;
        }
        .navbar-main .navbar-nav .nav-link {
            font-weight: 600;
            color: var(--text-body);
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            font-size: 0.95rem;
            position: relative;
        }
        .navbar-main .navbar-nav .nav-link:hover,
        .navbar-main .navbar-nav .nav-link:focus {
            color: var(--primary);
            background: rgba(26, 42, 108, 0.04);
        }
        .navbar-main .navbar-nav .nav-link.active {
            color: var(--primary);
            background: rgba(26, 42, 108, 0.06);
        }
        .navbar-main .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--secondary);
            border-radius: 4px;
        }
        .navbar-main .navbar-nav .nav-cta {
            background: var(--primary);
            color: #fff !important;
            padding: 10px 28px !important;
            border-radius: 50px;
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(26, 42, 108, 0.20);
            margin-left: 8px;
        }
        .navbar-main .navbar-nav .nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(26, 42, 108, 0.30);
            color: #fff !important;
        }
        .navbar-main .navbar-toggler {
            border: none;
            padding: 8px 12px;
            font-size: 1.4rem;
            color: var(--primary);
            background: transparent;
            border-radius: var(--radius-sm);
        }
        .navbar-main .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(26, 42, 108, 0.20);
        }
        @media (max-width: 991px) {
            .navbar-main {
                min-height: 64px;
            }
            .navbar-main .navbar-nav .nav-link {
                padding: 12px 16px;
                border-radius: 0;
                border-bottom: 1px solid var(--border-light);
            }
            .navbar-main .navbar-nav .nav-cta {
                margin: 12px 16px;
                text-align: center;
            }
            .navbar-main .navbar-nav .nav-link.active::after {
                display: none;
            }
        }

        /* ===== Article Banner ===== */
        .article-banner {
            position: relative;
            min-height: 360px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: var(--primary-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: 80px 24px 60px;
            isolation: isolate;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 26, 74, 0.82) 0%, rgba(26, 42, 108, 0.70) 100%);
            z-index: 0;
        }
        .article-banner>* {
            position: relative;
            z-index: 1;
        }
        .article-banner .banner-badge {
            display: inline-block;
            background: var(--secondary);
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 0.80rem;
            padding: 4px 18px;
            border-radius: 50px;
            letter-spacing: 0.03em;
            margin-bottom: 16px;
            text-transform: uppercase;
        }
        .article-banner h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            max-width: 800px;
            margin: 0 auto 12px;
            line-height: 1.25;
            letter-spacing: -0.02em;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.20);
        }
        .article-banner .banner-meta {
            color: rgba(255, 255, 255, 0.80);
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }
        .article-banner .banner-meta i {
            margin-right: 6px;
            opacity: 0.7;
        }
        @media (max-width: 768px) {
            .article-banner {
                min-height: 280px;
                padding: 60px 16px 40px;
            }
            .article-banner h1 {
                font-size: 1.8rem;
            }
            .article-banner .banner-meta {
                font-size: 0.85rem;
                gap: 12px;
            }
        }
        @media (max-width: 520px) {
            .article-banner h1 {
                font-size: 1.5rem;
            }
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-wrap {
            background: #fff;
            border-bottom: 1px solid var(--border-light);
            padding: 12px 0;
        }
        .breadcrumb-wrap .breadcrumb {
            margin: 0;
            padding: 0;
            background: transparent;
            font-size: 0.88rem;
            color: var(--text-weak);
        }
        .breadcrumb-wrap .breadcrumb-item a {
            color: var(--text-weak);
            transition: var(--transition);
        }
        .breadcrumb-wrap .breadcrumb-item a:hover {
            color: var(--primary);
        }
        .breadcrumb-wrap .breadcrumb-item.active {
            color: var(--text-body);
            font-weight: 500;
        }
        .breadcrumb-wrap .breadcrumb-item+.breadcrumb-item::before {
            color: var(--text-weak);
            content: '/';
        }

        /* ===== Article Content ===== */
        .article-section {
            padding: 60px 0 80px;
        }
        .article-main {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 48px 56px;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .article-main .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 28px;
            margin-bottom: 32px;
            padding-bottom: 24px;
            border-bottom: 1px solid var(--border-light);
            font-size: 0.92rem;
            color: var(--text-weak);
        }
        .article-main .article-meta .meta-tag {
            display: inline-block;
            background: rgba(232, 184, 48, 0.15);
            color: var(--primary-dark);
            font-weight: 600;
            font-size: 0.78rem;
            padding: 2px 14px;
            border-radius: 50px;
        }
        .article-main .article-meta i {
            margin-right: 6px;
            opacity: 0.6;
        }
        .article-main .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-body);
        }
        .article-main .article-body p {
            margin-bottom: 1.4em;
        }
        .article-main .article-body h2,
        .article-main .article-body h3 {
            margin-top: 1.6em;
            margin-bottom: 0.6em;
        }
        .article-main .article-body h2 {
            font-size: 1.6rem;
        }
        .article-main .article-body h3 {
            font-size: 1.25rem;
        }
        .article-main .article-body img {
            border-radius: var(--radius-md);
            margin: 1.6em 0;
            box-shadow: var(--shadow-sm);
        }
        .article-main .article-body ul,
        .article-main .article-body ol {
            padding-left: 1.5em;
            margin-bottom: 1.4em;
        }
        .article-main .article-body ul li {
            list-style: disc;
            margin-bottom: 0.3em;
        }
        .article-main .article-body ol li {
            list-style: decimal;
            margin-bottom: 0.3em;
        }
        .article-main .article-body blockquote {
            border-left: 4px solid var(--secondary);
            padding: 16px 24px;
            margin: 1.6em 0;
            background: rgba(232, 184, 48, 0.06);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-dark);
            font-style: italic;
        }
        .article-main .article-body a {
            color: var(--primary-light);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-main .article-body a:hover {
            color: var(--primary-dark);
        }
        .article-not-found {
            text-align: center;
            padding: 60px 20px;
        }
        .article-not-found i {
            font-size: 3.6rem;
            color: var(--text-weak);
            margin-bottom: 20px;
            display: block;
        }
        .article-not-found h2 {
            font-size: 1.6rem;
            margin-bottom: 12px;
        }
        .article-not-found p {
            color: var(--text-weak);
            margin-bottom: 24px;
        }
        .article-not-found .btn-home {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 12px 36px;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
        }
        .article-not-found .btn-home:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            color: #fff;
        }
        @media (max-width: 768px) {
            .article-main {
                padding: 28px 20px;
            }
            .article-main .article-body {
                font-size: 0.98rem;
            }
            .article-main .article-meta {
                gap: 12px 20px;
                font-size: 0.85rem;
            }
        }
        @media (max-width: 520px) {
            .article-section {
                padding: 32px 0 48px;
            }
            .article-main {
                padding: 20px 14px;
                border-radius: var(--radius-md);
            }
            .article-main .article-body {
                font-size: 0.95rem;
            }
        }

        /* ===== Article Tags & Share ===== */
        .article-tags-share {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding-top: 28px;
            margin-top: 32px;
            border-top: 1px solid var(--border-light);
            gap: 16px;
        }
        .article-tags-share .tags-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .article-tags-share .tags-list .tag-item {
            display: inline-block;
            background: var(--bg-light);
            color: var(--text-body);
            font-size: 0.80rem;
            padding: 4px 16px;
            border-radius: 50px;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            font-weight: 500;
        }
        .article-tags-share .tags-list .tag-item:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .article-tags-share .share-list {
            display: flex;
            gap: 10px;
            align-items: center;
        }
        .article-tags-share .share-list span {
            font-size: 0.88rem;
            color: var(--text-weak);
            font-weight: 500;
        }
        .article-tags-share .share-list a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--bg-light);
            color: var(--text-body);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            font-size: 1rem;
        }
        .article-tags-share .share-list a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        @media (max-width: 600px) {
            .article-tags-share {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        /* ===== Related Posts ===== */
        .related-section {
            padding: 0 0 60px;
        }
        .related-section .section-title {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 32px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--border-light);
            position: relative;
        }
        .related-section .section-title::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 60px;
            height: 4px;
            background: var(--secondary);
            border-radius: 4px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: transparent;
        }
        .related-card .card-img {
            aspect-ratio: 16 / 10;
            object-fit: cover;
            width: 100%;
            border-radius: 0;
        }
        .related-card .card-body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card .card-body .card-cat {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 700;
            color: var(--primary-light);
            text-transform: uppercase;
            letter-spacing: 0.04em;
            margin-bottom: 6px;
        }
        .related-card .card-body .card-title {
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.4;
            margin-bottom: 8px;
            transition: var(--transition);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card:hover .card-body .card-title {
            color: var(--primary-light);
        }
        .related-card .card-body .card-text {
            font-size: 0.88rem;
            color: var(--text-weak);
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .related-card .card-body .card-meta {
            font-size: 0.80rem;
            color: var(--text-weak);
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: auto;
        }
        .related-card .card-body .card-meta i {
            margin-right: 4px;
            opacity: 0.6;
        }
        @media (max-width: 768px) {
            .related-section .section-title {
                font-size: 1.3rem;
            }
            .related-card .card-body {
                padding: 16px 18px 20px;
            }
            .related-card .card-body .card-title {
                font-size: 1rem;
            }
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 60px 0 80px;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
            isolation: isolate;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 26, 46, 0.88) 0%, rgba(26, 42, 108, 0.78) 100%);
            z-index: 0;
        }
        .cta-section>* {
            position: relative;
            z-index: 1;
        }
        .cta-section .cta-box {
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-section .cta-box h2 {
            font-size: 2.0rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .cta-section .cta-box p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.05rem;
            margin-bottom: 28px;
            line-height: 1.7;
        }
        .cta-section .cta-box .btn-cta {
            display: inline-block;
            background: var(--secondary);
            color: var(--primary-dark);
            font-weight: 700;
            padding: 14px 48px;
            border-radius: 50px;
            font-size: 1.05rem;
            transition: var(--transition);
            box-shadow: 0 8px 30px rgba(232, 184, 48, 0.30);
        }
        .cta-section .cta-box .btn-cta:hover {
            background: var(--secondary-light);
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(232, 184, 48, 0.45);
            color: var(--primary-dark);
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 48px 0 56px;
            }
            .cta-section .cta-box h2 {
                font-size: 1.5rem;
            }
            .cta-section .cta-box p {
                font-size: 0.95rem;
            }
            .cta-section .cta-box .btn-cta {
                padding: 12px 36px;
                font-size: 0.95rem;
            }
        }

        /* ===== Footer ===== */
        .footer-main {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.70);
            padding: 60px 0 0;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-main .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-main .footer-brand .logo-text {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer-main .footer-brand p {
            font-size: 0.90rem;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-main .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .footer-main .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-main .footer-col ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.88rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .footer-main .footer-col ul li a:hover {
            color: var(--secondary);
        }
        .footer-main .footer-col ul li a i {
            font-size: 0.80rem;
            opacity: 0.6;
        }
        .footer-main .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 20px 0 28px;
            gap: 16px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.40);
        }
        .footer-main .footer-bottom .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-main .footer-bottom .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.50);
            transition: var(--transition);
            font-size: 1rem;
        }
        .footer-main .footer-bottom .footer-social a:hover {
            background: var(--secondary);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }
        @media (max-width: 991px) {
            .footer-main .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px 24px;
            }
        }
        @media (max-width: 600px) {
            .footer-main .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-main .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }
        .mt-1 {
            margin-top: 8px;
        }
        .mt-2 {
            margin-top: 16px;
        }
        .mt-3 {
            margin-top: 24px;
        }
        .mt-4 {
            margin-top: 32px;
        }
        .mb-1 {
            margin-bottom: 8px;
        }
        .mb-2 {
            margin-bottom: 16px;
        }
        .mb-3 {
            margin-bottom: 24px;
        }
        .mb-4 {
            margin-bottom: 32px;
        }
        .gap-2 {
            gap: 12px;
        }
        .gap-3 {
            gap: 20px;
        }

        /* ===== Responsive Grid Overrides ===== */
        @media (max-width: 768px) {
            .row-cols-md-3>* {
                flex: 0 0 auto;
                width: 100%;
            }
        }
        @media (min-width: 768px) and (max-width: 991px) {
            .row-cols-md-3>* {
                flex: 0 0 auto;
                width: 50%;
            }
        }

        /* ===== Smooth Image Load ===== */
        img {
            transition: opacity 0.3s ease;
        }
        img[loading="lazy"] {
            opacity: 0;
        }
        img[loading="lazy"].loaded,
        img[loading="lazy"][src] {
            opacity: 1;
        }

        /* ===== Focus Visible Global ===== */
        :focus-visible {
            outline: 3px solid var(--border-focus);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ===== Selection ===== */
        ::selection {
            background: var(--secondary);
            color: var(--primary-dark);
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a2a6c;
            --primary-light: #2d4a8e;
            --primary-dark: #0f1a3e;
            --secondary: #e8491d;
            --secondary-light: #f0623c;
            --accent: #f5a623;
            --bg-body: #f8f9fc;
            --bg-white: #ffffff;
            --bg-alt: #f0f2f8;
            --bg-dark: #0d1117;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-light: #7a7a9a;
            --text-white: #ffffff;
            --border-color: #e2e6ef;
            --border-light: #f0f2f5;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(26, 42, 108, 0.06);
            --shadow-md: 0 8px 30px rgba(26, 42, 108, 0.10);
            --shadow-lg: 0 20px 60px rgba(26, 42, 108, 0.14);
            --shadow-hover: 0 16px 48px rgba(26, 42, 108, 0.18);
            --font-base: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --spacing-section: 5rem;
            --spacing-section-mobile: 3rem;
            --transition: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --max-width: 1200px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }

        body {
            font-family: var(--font-base);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            overflow-x: hidden;
        }

        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--secondary);
        }
        a:focus-visible {
            outline: 3px solid var(--secondary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
            width: 100%;
        }

        /* ===== 导航 ===== */
        .navbar-main {
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            padding: 0.6rem 0;
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: box-shadow var(--transition);
        }
        .navbar-main.scrolled {
            box-shadow: var(--shadow-md);
        }
        .navbar-main .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--primary) !important;
            letter-spacing: -0.02em;
        }
        .navbar-brand .brand-dot,
        .logo-text .dot {
            display: inline-block;
            width: 10px;
            height: 10px;
            background: var(--secondary);
            border-radius: 50%;
            margin-right: 4px;
            flex-shrink: 0;
        }
        .navbar-brand:hover {
            color: var(--primary-dark) !important;
        }
        .navbar-toggler {
            border: none;
            background: none;
            font-size: 1.4rem;
            color: var(--text-primary);
            padding: 0.25rem 0.5rem;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .navbar-toggler:hover {
            background: var(--bg-alt);
        }
        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--secondary);
        }
        .navbar-nav .nav-item {
            margin: 0 0.1rem;
        }
        .navbar-nav .nav-link {
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary) !important;
            padding: 0.5rem 1rem !important;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            position: relative;
        }
        .navbar-nav .nav-link:hover {
            color: var(--primary) !important;
            background: var(--bg-alt);
        }
        .navbar-nav .nav-link.active {
            color: var(--primary) !important;
            background: rgba(26, 42, 108, 0.08);
        }
        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 3px;
            background: var(--secondary);
            border-radius: 2px;
        }
        .navbar-nav .nav-cta {
            background: var(--secondary) !important;
            color: #fff !important;
            padding: 0.5rem 1.4rem !important;
            border-radius: 50px;
            font-weight: 600;
            margin-left: 0.5rem;
        }
        .navbar-nav .nav-cta:hover {
            background: var(--secondary-light) !important;
            color: #fff !important;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(232, 73, 29, 0.35);
        }
        .navbar-nav .nav-cta.active::after {
            display: none;
        }

        /* ===== Hero / Banner ===== */
        .banner-inner {
            position: relative;
            min-height: 48vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            overflow: hidden;
            padding: 4rem 0;
        }
        .banner-inner .bg-overlay {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            opacity: 0.18;
            mix-blend-mode: overlay;
            z-index: 0;
        }
        .banner-inner .banner-content {
            position: relative;
            z-index: 1;
            max-width: 800px;
            padding: 0 1.5rem;
        }
        .banner-inner .breadcrumb {
            background: none;
            padding: 0;
            margin-bottom: 1rem;
            justify-content: center;
            font-size: 0.9rem;
        }
        .banner-inner .breadcrumb-item,
        .banner-inner .breadcrumb-item a {
            color: rgba(255, 255, 255, 0.75);
        }
        .banner-inner .breadcrumb-item.active {
            color: #fff;
        }
        .banner-inner .breadcrumb-item+.breadcrumb-item::before {
            color: rgba(255, 255, 255, 0.5);
        }
        .banner-inner h1 {
            font-size: clamp(2rem, 5vw, 3.2rem);
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 1rem;
        }
        .banner-inner h1 .highlight {
            background: linear-gradient(135deg, var(--accent), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .banner-inner p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 640px;
            margin: 0 auto 1.5rem;
            line-height: 1.8;
        }
        .banner-inner .btn-banner {
            background: var(--secondary);
            color: #fff;
            border: none;
            padding: 0.8rem 2.2rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            box-shadow: 0 4px 20px rgba(232, 73, 29, 0.3);
        }
        .banner-inner .btn-banner:hover {
            background: var(--secondary-light);
            transform: translateY(-3px);
            box-shadow: 0 8px 32px rgba(232, 73, 29, 0.45);
            color: #fff;
        }
        .banner-inner .btn-banner i {
            margin-right: 0.5rem;
        }

        /* ===== 通用板块 ===== */
        .section-padding {
            padding: var(--spacing-section) 0;
        }
        .section-padding-sm {
            padding: calc(var(--spacing-section) * 0.65) 0;
        }
        .section-title {
            text-align: center;
            margin-bottom: 3rem;
        }
        .section-title .subtitle {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--secondary);
            background: rgba(232, 73, 29, 0.1);
            padding: 0.3rem 1rem;
            border-radius: 50px;
            margin-bottom: 0.75rem;
        }
        .section-title h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.6rem);
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
            margin-bottom: 0.75rem;
        }
        .section-title p {
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
            font-size: 1.05rem;
        }
        .bg-alt-section {
            background: var(--bg-alt);
        }
        .bg-white-section {
            background: var(--bg-white);
        }

        /* ===== 平台概述 ===== */
        .overview-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }
        .overview-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            position: relative;
        }
        .overview-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 320px;
            transition: transform 0.6s ease;
        }
        .overview-image:hover img {
            transform: scale(1.03);
        }
        .overview-text h3 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 1rem;
            letter-spacing: -0.01em;
        }
        .overview-text p {
            color: var(--text-secondary);
            margin-bottom: 1.2rem;
            font-size: 1.05rem;
            line-height: 1.8;
        }
        .overview-text .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            margin-top: 1.5rem;
        }
        .overview-text .tag-list .tag {
            background: rgba(26, 42, 108, 0.06);
            color: var(--primary);
            padding: 0.4rem 1rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid rgba(26, 42, 108, 0.1);
            transition: all var(--transition);
        }
        .overview-text .tag-list .tag:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        /* ===== 核心功能卡片 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.8rem;
        }
        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: transparent;
        }
        .feature-card .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .feature-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .feature-card:hover .card-img img {
            transform: scale(1.06);
        }
        .feature-card .card-img .img-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(13, 17, 23, 0.3) 0%, transparent 60%);
        }
        .feature-card .card-body {
            padding: 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .feature-card .card-body .badge-feature {
            display: inline-block;
            background: rgba(232, 73, 29, 0.1);
            color: var(--secondary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.2rem 0.8rem;
            border-radius: 50px;
            margin-bottom: 0.6rem;
            align-self: flex-start;
        }
        .feature-card .card-body h4 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 0.5rem;
        }
        .feature-card .card-body p {
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.6;
            flex: 1;
            margin-bottom: 1rem;
        }
        .feature-card .card-body .card-link {
            font-weight: 600;
            color: var(--secondary);
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            transition: gap var(--transition);
        }
        .feature-card .card-body .card-link:hover {
            gap: 0.7rem;
            color: var(--secondary-light);
        }

        /* ===== 使用流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            counter-reset: step-counter;
        }
        .step-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 2rem 1.5rem;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            position: relative;
            counter-increment: step-counter;
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-item .step-number {
            width: 48px;
            height: 48px;
            background: var(--primary);
            color: #fff;
            font-size: 1.2rem;
            font-weight: 700;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem;
            box-shadow: 0 4px 16px rgba(26, 42, 108, 0.2);
        }
        .step-item .step-number::before {
            content: counter(step-counter);
        }
        .step-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 0.5rem;
        }
        .step-item p {
            color: var(--text-secondary);
            font-size: 0.88rem;
            line-height: 1.6;
            margin-bottom: 0;
        }
        .step-item .step-icon {
            font-size: 1.8rem;
            color: var(--secondary);
            margin-bottom: 0.75rem;
        }

        /* ===== 平台优势 ===== */
        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
        }
        .advantage-item {
            display: flex;
            gap: 1rem;
            align-items: flex-start;
            background: var(--bg-white);
            padding: 1.5rem;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .advantage-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .advantage-item .icon-box {
            width: 48px;
            height: 48px;
            min-width: 48px;
            background: rgba(26, 42, 108, 0.08);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--primary);
        }
        .advantage-item .advantage-text h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 0.25rem;
        }
        .advantage-item .advantage-text p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            margin-bottom: 1rem;
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-item .faq-question {
            padding: 1.2rem 1.5rem;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
        }
        .faq-item .faq-question:hover {
            background: var(--bg-alt);
        }
        .faq-item .faq-question:focus {
            outline: 2px solid var(--secondary);
            outline-offset: -2px;
        }
        .faq-item .faq-question i {
            color: var(--secondary);
            transition: transform var(--transition);
            font-size: 1.1rem;
        }
        .faq-item .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding: 0 1.5rem 1.2rem;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            position: relative;
            overflow: hidden;
            padding: 4rem 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .cta-section h2 {
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.75rem;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.05rem;
            margin-bottom: 2rem;
        }
        .cta-section .btn-cta {
            background: var(--secondary);
            color: #fff;
            border: none;
            padding: 0.85rem 2.5rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.05rem;
            transition: all var(--transition);
            box-shadow: 0 4px 24px rgba(232, 73, 29, 0.35);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .cta-section .btn-cta:hover {
            background: var(--secondary-light);
            transform: translateY(-3px);
            box-shadow: 0 8px 36px rgba(232, 73, 29, 0.5);
            color: #fff;
        }
        .cta-section .btn-cta-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.3);
            padding: 0.85rem 2.5rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.05rem;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            margin-left: 0.75rem;
        }
        .cta-section .btn-cta-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.6);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 页脚 ===== */
        .footer-main {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 3.5rem 0 0;
        }
        .footer-main .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2.5rem;
            padding-bottom: 2.5rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-main .footer-brand .logo-text {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 0.4rem;
            margin-bottom: 0.75rem;
        }
        .footer-main .footer-brand .logo-text .dot {
            background: var(--secondary);
        }
        .footer-main .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-main .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 1rem;
            position: relative;
            padding-bottom: 0.5rem;
        }
        .footer-main .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 2px;
            background: var(--secondary);
            border-radius: 2px;
        }
        .footer-main .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-main .footer-col ul li {
            margin-bottom: 0.5rem;
        }
        .footer-main .footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }
        .footer-main .footer-col ul li a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }
        .footer-main .footer-col ul li a i {
            font-size: 0.85rem;
        }
        .footer-main .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1.5rem 0;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .footer-main .footer-bottom span {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-main .footer-social {
            display: flex;
            gap: 0.75rem;
        }
        .footer-main .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.6);
            font-size: 1rem;
            transition: all var(--transition);
        }
        .footer-main .footer-social a:hover {
            background: var(--secondary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-main .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
            .footer-main .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 3rem;
            }
            .banner-inner {
                min-height: 36vh;
                padding: 3rem 0;
            }
            .banner-inner h1 {
                font-size: 1.8rem;
            }
            .banner-inner p {
                font-size: 0.95rem;
            }
            .overview-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .overview-image {
                order: -1;
            }
            .overview-image img {
                min-height: 240px;
            }
            .features-grid {
                grid-template-columns: 1fr;
                max-width: 480px;
                margin: 0 auto;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                max-width: 400px;
                margin: 0 auto;
            }
            .advantages-grid {
                grid-template-columns: 1fr;
            }
            .section-title h2 {
                font-size: 1.6rem;
            }
            .navbar-brand {
                font-size: 1.1rem;
            }
            .navbar-nav .nav-link {
                padding: 0.5rem 0.75rem !important;
                font-size: 0.9rem;
            }
            .navbar-nav .nav-cta {
                margin-left: 0;
                margin-top: 0.3rem;
                text-align: center;
            }
            .cta-section .btn-cta-outline {
                margin-left: 0;
                margin-top: 0.75rem;
            }
            .footer-main .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .footer-main .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .faq-item .faq-question {
                font-size: 0.95rem;
                padding: 1rem 1.2rem;
            }
            .faq-item .faq-answer {
                padding: 0 1.2rem 1rem;
                font-size: 0.9rem;
            }
        }

        @media (max-width: 520px) {
            .banner-inner h1 {
                font-size: 1.5rem;
            }
            .banner-inner p {
                font-size: 0.88rem;
            }
            .section-title h2 {
                font-size: 1.35rem;
            }
            .overview-text h3 {
                font-size: 1.3rem;
            }
            .feature-card .card-body {
                padding: 1.2rem;
            }
            .step-item {
                padding: 1.5rem 1rem;
            }
            .advantage-item {
                padding: 1.2rem;
                flex-direction: column;
                align-items: center;
                text-align: center;
            }
            .advantage-item .icon-box {
                margin-bottom: 0.5rem;
            }
            .container-custom {
                padding: 0 1rem;
            }
            .navbar-brand {
                font-size: 1rem;
            }
            .navbar-nav .nav-link {
                font-size: 0.85rem;
                padding: 0.4rem 0.6rem !important;
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }
            .cta-section .btn-cta,
            .cta-section .btn-cta-outline {
                padding: 0.7rem 1.8rem;
                font-size: 0.95rem;
                width: 100%;
                justify-content: center;
            }
            .footer-main {
                padding: 2.5rem 0 0;
            }
            .footer-main .footer-brand .logo-text {
                font-size: 1.1rem;
            }
        }