/* roulang page: index */
:root {
            --color-brand-800: #1e3a5f;
            --color-brand-700: #334e68;
            --color-brand-600: #486581;
            --color-accent-500: #c8963e;
            --color-accent-400: #d9a45a;
            --color-warm-900: #1c1917;
            --color-warm-700: #44403c;
            --color-warm-500: #78716c;
            --color-warm-100: #f5f5f4;
            --color-warm-50: #fafaf9;
            --radius-xl: 0.75rem;
            --radius-2xl: 1rem;
            --radius-3xl: 1.25rem;
            --shadow-card: 0 4px 24px -4px rgba(0,0,0,0.06), 0 2px 8px -2px rgba(0,0,0,0.04);
            --shadow-card-hover: 0 12px 36px -6px rgba(0,0,0,0.10), 0 4px 16px -4px rgba(0,0,0,0.06);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

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

        body {
            margin: 0;
            padding: 0;
            font-family: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            line-height: 1.7;
            color: var(--color-warm-900);
            background-color: #fefefc;
            overflow-x: hidden;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-smooth);
        }

        button {
            cursor: pointer;
            font-family: inherit;
        }

        input,
        textarea {
            font-family: inherit;
        }

        /* 容器 */
        .container-custom {
            width: 100%;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        @media (max-width: 768px) {
            .container-custom {
                padding-left: 1.25rem;
                padding-right: 1.25rem;
            }
        }

        /* ========== 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: rgba(254, 254, 252, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.06);
            transition: box-shadow var(--transition-smooth);
        }

        .site-header.scrolled {
            box-shadow: 0 1px 8px rgba(0, 0, 0, 0.06);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 2rem;
        }

        .nav-logo {
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--color-brand-800);
            white-space: nowrap;
            flex-shrink: 0;
            transition: color var(--transition-smooth);
        }

        .nav-logo:hover {
            color: var(--color-brand-600);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 2.25rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-warm-700);
            position: relative;
            padding: 0.35rem 0;
            letter-spacing: 0.01em;
            white-space: nowrap;
            transition: color var(--transition-smooth);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--color-brand-800);
            border-radius: 1px;
            transition: width var(--transition-smooth);
        }

        .nav-links a:hover {
            color: var(--color-brand-800);
        }

        .nav-links a:hover::after {
            width: 100%;
        }

        .nav-links a.active {
            color: var(--color-brand-800);
            font-weight: 600;
        }

        .nav-links a.active::after {
            width: 100%;
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.55rem 1.35rem;
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            background-color: var(--color-brand-800);
            border-radius: 9999px;
            border: none;
            letter-spacing: 0.015em;
            transition: all var(--transition-smooth);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .nav-cta-btn:hover {
            background-color: var(--color-brand-700);
            box-shadow: 0 4px 16px rgba(30, 58, 95, 0.25);
            transform: translateY(-1px);
        }

        .nav-cta-btn:active {
            transform: translateY(0);
        }

        /* 移动端菜单按钮 */
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            padding: 0.5rem;
            color: var(--color-warm-900);
            font-size: 1.4rem;
            line-height: 1;
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                flex-direction: column;
                background: rgba(254, 254, 252, 0.98);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                border-bottom: 1px solid rgba(0, 0, 0, 0.06);
                padding: 1.25rem 1.5rem 1.5rem;
                gap: 0.75rem;
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
            }

            .nav-links.open {
                display: flex;
            }

            .nav-links a {
                font-size: 1rem;
                padding: 0.5rem 0;
                width: 100%;
                border-bottom: 1px solid rgba(0, 0, 0, 0.04);
            }

            .nav-links a:last-child {
                border-bottom: none;
            }

            .nav-links a::after {
                display: none;
            }

            .nav-links a.active {
                background-color: rgba(30, 58, 95, 0.04);
                border-radius: 0.5rem;
                padding-left: 0.75rem;
                padding-right: 0.75rem;
            }

            .mobile-menu-btn {
                display: block;
            }

            .nav-cta-btn {
                font-size: 0.85rem;
                padding: 0.45rem 1.1rem;
            }
        }

        @media (max-width: 480px) {
            .nav-inner {
                height: 56px;
                gap: 1rem;
            }

            .nav-logo {
                font-size: 1.2rem;
            }

            .nav-links {
                top: 56px;
            }
        }

        /* ========== Hero ========== */
        .hero-section {
            position: relative;
            min-height: 580px;
            display: flex;
            align-items: center;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(30, 58, 95, 0.82) 0%, rgba(30, 58, 95, 0.55) 50%, rgba(0, 0, 0, 0.35) 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 680px;
            padding: 4rem 0;
        }

        .hero-badge {
            display: inline-block;
            padding: 0.4rem 1rem;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            color: #fff;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 9999px;
            margin-bottom: 1.5rem;
            backdrop-filter: blur(4px);
        }

        .hero-title {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.2;
            color: #fff;
            margin: 0 0 1.25rem;
            letter-spacing: -0.02em;
        }

        .hero-title .brand-em {
            color: #f0d78c;
        }

        .hero-desc {
            font-size: 1.15rem;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.88);
            margin: 0 0 2rem;
            max-width: 520px;
        }

        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.8rem 1.8rem;
            font-size: 1rem;
            font-weight: 600;
            color: #1e3a5f;
            background-color: #fff;
            border-radius: 9999px;
            border: none;
            letter-spacing: 0.015em;
            transition: all var(--transition-smooth);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        }

        .btn-primary:hover {
            background-color: #f0d78c;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
            transform: translateY(-2px);
            color: #1e3a5f;
        }

        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.8rem 1.8rem;
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.6);
            border-radius: 9999px;
            letter-spacing: 0.015em;
            transition: all var(--transition-smooth);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
            transform: translateY(-2px);
        }

        .btn-outline-light:active {
            transform: translateY(0);
        }

        @media (max-width: 768px) {
            .hero-section {
                min-height: 480px;
            }

            .hero-title {
                font-size: 2.1rem;
            }

            .hero-desc {
                font-size: 1rem;
                max-width: 100%;
            }

            .hero-content {
                padding: 3rem 0;
            }

            .btn-primary,
            .btn-outline-light {
                padding: 0.7rem 1.4rem;
                font-size: 0.95rem;
            }
        }

        @media (max-width: 480px) {
            .hero-section {
                min-height: 420px;
            }

            .hero-title {
                font-size: 1.7rem;
            }

            .hero-badge {
                font-size: 0.78rem;
                padding: 0.35rem 0.85rem;
            }

            .hero-btns {
                flex-direction: column;
                gap: 0.75rem;
            }

            .btn-primary,
            .btn-outline-light {
                width: 100%;
                justify-content: center;
            }
        }

        /* ========== 板块通用 ========== */
        .section-pad {
            padding: 5rem 0;
        }

        @media (max-width: 768px) {
            .section-pad {
                padding: 3rem 0;
            }
        }

        .section-label {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--color-accent-500);
            text-transform: uppercase;
            margin-bottom: 0.6rem;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-warm-900);
            margin: 0 0 0.75rem;
            letter-spacing: -0.015em;
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--color-warm-500);
            max-width: 560px;
            line-height: 1.7;
            margin: 0;
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 1.6rem;
            }

            .section-subtitle {
                font-size: 0.95rem;
            }
        }

        /* ========== 卡片基础 ========== */
        .card-base {
            background: #fff;
            border-radius: var(--radius-2xl);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            overflow: hidden;
        }

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

        /* ========== 核心优势 ========== */
        .advantage-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.75rem;
        }

        .advantage-card {
            background: #fff;
            border-radius: var(--radius-2xl);
            padding: 2rem 1.75rem;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            text-align: center;
            border: 1px solid rgba(0, 0, 0, 0.04);
        }

        .advantage-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: rgba(30, 58, 95, 0.12);
        }

        .advantage-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(30, 58, 95, 0.06);
            color: var(--color-brand-800);
            font-size: 1.5rem;
            margin-bottom: 1.25rem;
        }

        .advantage-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-warm-900);
            margin: 0 0 0.6rem;
        }

        .advantage-card p {
            font-size: 0.93rem;
            color: var(--color-warm-500);
            line-height: 1.65;
            margin: 0;
        }

        @media (max-width: 768px) {
            .advantage-grid {
                grid-template-columns: 1fr;
                gap: 1.25rem;
            }

            .advantage-card {
                padding: 1.5rem 1.25rem;
            }
        }

        /* ========== 分类入口 ========== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.75rem;
        }

        .category-card {
            position: relative;
            border-radius: var(--radius-2xl);
            overflow: hidden;
            min-height: 280px;
            display: flex;
            align-items: flex-end;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            cursor: pointer;
        }

        .category-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .category-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: 0;
            transition: transform 0.5s ease;
        }

        .category-card:hover img {
            transform: scale(1.06);
        }

        .category-card::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(0, 0, 0, 0.7) 0%, rgba(0, 0, 0, 0.15) 50%, rgba(0, 0, 0, 0.05) 100%);
            z-index: 1;
        }

        .category-card-content {
            position: relative;
            z-index: 2;
            padding: 2rem;
            color: #fff;
        }

        .category-card-content h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin: 0 0 0.5rem;
            letter-spacing: -0.01em;
        }

        .category-card-content p {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.85);
            margin: 0 0 1rem;
            line-height: 1.6;
        }

        .category-card-link {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.9rem;
            font-weight: 600;
            color: #f0d78c;
            transition: gap var(--transition-smooth);
        }

        .category-card:hover .category-card-link {
            gap: 0.65rem;
        }

        @media (max-width: 768px) {
            .category-grid {
                grid-template-columns: 1fr;
                gap: 1.25rem;
            }

            .category-card {
                min-height: 220px;
            }

            .category-card-content {
                padding: 1.5rem;
            }

            .category-card-content h3 {
                font-size: 1.25rem;
            }
        }

        /* ========== 数据展示 ========== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            text-align: center;
        }

        .stat-item {
            padding: 1.5rem;
            background: #fff;
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(0, 0, 0, 0.04);
            transition: all var(--transition-smooth);
        }

        .stat-item:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--color-brand-800);
            letter-spacing: -0.02em;
            line-height: 1;
            margin-bottom: 0.4rem;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--color-warm-500);
            font-weight: 500;
        }

        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }

            .stat-number {
                font-size: 2rem;
            }
        }

        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.75rem;
            }

            .stat-item {
                padding: 1.1rem;
            }

            .stat-number {
                font-size: 1.7rem;
            }
        }

        /* ========== 最新信息列表 ========== */
        .news-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
        }

        .news-card {
            background: #fff;
            border-radius: var(--radius-2xl);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
            border: 1px solid rgba(0, 0, 0, 0.04);
        }

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

        .news-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }

        .news-card-body {
            padding: 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .news-card-tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--color-accent-500);
            background: rgba(200, 150, 62, 0.08);
            padding: 0.25rem 0.75rem;
            border-radius: 9999px;
            margin-bottom: 0.75rem;
            letter-spacing: 0.02em;
            align-self: flex-start;
        }

        .news-card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-warm-900);
            margin: 0 0 0.5rem;
            line-height: 1.4;
            transition: color var(--transition-smooth);
        }

        .news-card:hover .news-card-title {
            color: var(--color-brand-800);
        }

        .news-card-desc {
            font-size: 0.9rem;
            color: var(--color-warm-500);
            line-height: 1.6;
            margin: 0 0 1rem;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card-meta {
            font-size: 0.82rem;
            color: var(--color-warm-400);
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding-top: 0.75rem;
            border-top: 1px solid rgba(0, 0, 0, 0.04);
        }

        .news-empty {
            text-align: center;
            padding: 3rem;
            color: var(--color-warm-500);
            font-size: 1rem;
            grid-column: 1 / -1;
            background: #fff;
            border-radius: var(--radius-2xl);
            box-shadow: var(--shadow-card);
        }

        @media (max-width: 768px) {
            .news-list {
                grid-template-columns: 1fr;
                gap: 1.25rem;
            }

            .news-card-img {
                height: 180px;
            }
        }

        /* ========== 流程 ========== */
        .process-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            position: relative;
        }

        .process-item {
            text-align: center;
            position: relative;
            padding: 1.5rem 1rem;
            background: #fff;
            border-radius: var(--radius-2xl);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            border: 1px solid rgba(0, 0, 0, 0.04);
        }

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

        .process-step {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            background: var(--color-brand-800);
            margin-bottom: 1rem;
        }

        .process-item h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-warm-900);
            margin: 0 0 0.4rem;
        }

        .process-item p {
            font-size: 0.85rem;
            color: var(--color-warm-500);
            margin: 0;
            line-height: 1.55;
        }

        @media (max-width: 768px) {
            .process-list {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
        }

        @media (max-width: 480px) {
            .process-list {
                grid-template-columns: 1fr;
                gap: 0.85rem;
            }

            .process-item {
                padding: 1.25rem 1rem;
            }
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.85rem;
        }

        .faq-item {
            background: #fff;
            border-radius: var(--radius-xl);
            border: 1px solid rgba(0, 0, 0, 0.05);
            overflow: hidden;
            transition: all var(--transition-smooth);
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
        }

        .faq-item:hover {
            border-color: rgba(30, 58, 95, 0.15);
            box-shadow: var(--shadow-card);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.2rem 1.5rem;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-warm-900);
            background: none;
            border: none;
            text-align: left;
            gap: 1rem;
            transition: color var(--transition-smooth);
        }

        .faq-question:hover {
            color: var(--color-brand-800);
        }

        .faq-question i {
            font-size: 0.85rem;
            color: var(--color-warm-400);
            transition: transform var(--transition-smooth);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--color-brand-800);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        .faq-answer-inner {
            padding: 0 1.5rem 1.2rem;
            font-size: 0.93rem;
            color: var(--color-warm-500);
            line-height: 1.7;
        }

        @media (max-width: 480px) {
            .faq-question {
                padding: 1rem 1.2rem;
                font-size: 0.95rem;
            }

            .faq-answer-inner {
                padding: 0 1.2rem 1rem;
                font-size: 0.88rem;
            }
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, #1e3a5f 0%, #162d4a 100%);
            border-radius: var(--radius-3xl);
            padding: 3.5rem 2.5rem;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.04) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin: 0 0 0.75rem;
            letter-spacing: -0.01em;
            position: relative;
            z-index: 1;
        }

        .cta-section p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.8);
            margin: 0 0 1.75rem;
            position: relative;
            z-index: 1;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.65;
        }

        .cta-section .btn-primary {
            position: relative;
            z-index: 1;
            font-size: 1rem;
            padding: 0.85rem 2rem;
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 2.5rem 1.5rem;
                border-radius: var(--radius-2xl);
            }

            .cta-section h2 {
                font-size: 1.5rem;
            }
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background-color: #fafaf9;
            border-top: 1px solid rgba(0, 0, 0, 0.06);
            padding: 3rem 0 2rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2rem;
        }

        .footer-brand-name {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-brand-800);
            margin-bottom: 0.6rem;
        }

        .footer-brand-desc {
            font-size: 0.9rem;
            color: var(--color-warm-500);
            line-height: 1.6;
            max-width: 300px;
            margin: 0;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--color-warm-900);
            margin: 0 0 1rem;
            letter-spacing: 0.03em;
            text-transform: uppercase;
        }

        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 0.55rem;
        }

        .footer-col ul a {
            font-size: 0.9rem;
            color: var(--color-warm-500);
            transition: color var(--transition-smooth);
        }

        .footer-col ul a:hover {
            color: var(--color-brand-800);
        }

        .footer-bottom {
            border-top: 1px solid rgba(0, 0, 0, 0.06);
            padding-top: 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
            font-size: 0.85rem;
            color: var(--color-warm-400);
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ========== 背景色板块交替 ========== */
        .bg-soft {
            background-color: #fafaf9;
        }

        /* ========== 焦点可见 ========== */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--color-brand-800);
            outline-offset: 3px;
            border-radius: 4px;
        }

        /* ========== 分隔线装饰 ========== */
        .divider-dot {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 1rem 0;
        }

        .divider-dot span {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background-color: var(--color-accent-400);
            display: block;
        }

/* roulang page: category1 */
/* ========== 设计变量 ========== */
        :root {
            --color-primary: #1f3a52;
            --color-primary-light: #334e68;
            --color-accent: #f97316;
            --color-accent-hover: #ea580c;
            --color-text: #1e293b;
            --color-text-soft: #64748b;
            --color-text-muted: #94a3b8;
            --color-border: #e2e8f0;
            --color-bg: #f8fafc;
            --color-surface: #ffffff;
            --color-surface-muted: #f1f5f9;
            --radius-sm: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.04);
            --shadow-md: 0 4px 16px 0 rgba(0,0,0,0.06);
            --shadow-lg: 0 8px 30px 0 rgba(0,0,0,0.08);
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.22, 0.61, 0.36, 1);
        }

        /* ========== 基础 Reset ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

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

        body {
            margin: 0;
            padding: 0;
            font-family: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

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

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

        /* ========== 导航样式 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 1px 0 0 rgba(0,0,0,0.03);
            transition: var(--transition-smooth);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 1.5rem;
            height: 64px;
            max-width: 1280px;
            margin: 0 auto;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--color-primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }

        .logo-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-accent);
            display: inline-block;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links li a {
            display: inline-flex;
            align-items: center;
            padding: 0.5rem 1rem;
            font-size: 0.925rem;
            font-weight: 500;
            color: var(--color-text-soft);
            border-radius: var(--radius-sm);
            transition: var(--transition-base);
            position: relative;
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .nav-links li a:hover {
            color: var(--color-primary);
            background: rgba(31, 58, 82, 0.04);
        }

        .nav-links li a.active {
            color: var(--color-primary);
            font-weight: 600;
        }

        .nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 3px;
            background: var(--color-accent);
            transition: var(--transition-base);
        }

        .nav-links li a.nav-cta {
            background: var(--color-primary);
            color: #ffffff;
            padding: 0.5rem 1.25rem;
            border-radius: 2rem;
            font-weight: 600;
            font-size: 0.875rem;
            transition: var(--transition-smooth);
        }

        .nav-links li a.nav-cta:hover {
            background: var(--color-primary-light);
            color: #ffffff;
            box-shadow: 0 4px 14px rgba(31, 58, 82, 0.25);
            transform: translateY(-1px);
        }

        /* 移动端菜单按钮 */
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 0.5rem;
            color: var(--color-text);
            font-size: 1.4rem;
            line-height: 1;
            transition: var(--transition-base);
        }

        .mobile-menu-btn:hover {
            color: var(--color-accent);
        }

        /* 移动端导航 */
        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: block;
            }

            .nav-links {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: stretch;
                padding: 1rem 1.5rem 1.5rem;
                gap: 0.125rem;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-lg);
                display: none;
                z-index: 999;
            }

            .nav-links.open {
                display: flex;
            }

            .nav-links li a {
                padding: 0.75rem 1rem;
                font-size: 1rem;
                border-radius: var(--radius-md);
                width: 100%;
                justify-content: center;
            }

            .nav-links li a.active::after {
                display: none;
            }

            .nav-links li a.active {
                background: rgba(31, 58, 82, 0.06);
                border-radius: var(--radius-md);
            }

            .nav-links li a.nav-cta {
                margin-top: 0.5rem;
                text-align: center;
                justify-content: center;
                border-radius: var(--radius-md);
            }
        }

        /* ========== 板块通用样式 ========== */
        .section-container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        .section-padding {
            padding-top: 5rem;
            padding-bottom: 5rem;
        }

        @media (max-width: 768px) {
            .section-padding {
                padding-top: 3rem;
                padding-bottom: 3rem;
            }
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--color-accent);
            margin-bottom: 0.75rem;
        }

        .section-label::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-accent);
            display: inline-block;
        }

        .section-title {
            font-size: 2.25rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            line-height: 1.25;
            margin-bottom: 1rem;
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--color-text-soft);
            line-height: 1.65;
            max-width: 640px;
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 1.65rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
            }
        }

        /* ========== 按钮样式 ========== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.8rem 1.75rem;
            background: var(--color-primary);
            color: #ffffff;
            font-weight: 600;
            font-size: 0.95rem;
            border-radius: 2.5rem;
            border: none;
            cursor: pointer;
            transition: var(--transition-smooth);
            letter-spacing: 0.01em;
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--color-primary-light);
            box-shadow: 0 6px 20px rgba(31, 58, 82, 0.3);
            transform: translateY(-2px);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 1.75rem;
            background: transparent;
            color: var(--color-primary);
            font-weight: 600;
            font-size: 0.95rem;
            border-radius: 2.5rem;
            border: 1.5px solid var(--color-border);
            cursor: pointer;
            transition: var(--transition-smooth);
            letter-spacing: 0.01em;
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-outline:hover {
            border-color: var(--color-primary);
            background: rgba(31, 58, 82, 0.03);
            transform: translateY(-1px);
        }

        /* ========== 卡片样式 ========== */
        .card-base {
            background: var(--color-surface);
            border-radius: var(--radius-xl);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition-smooth);
            overflow: hidden;
        }

        .card-base:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: #d1d5db;
        }

        /* ========== 标签/徽章样式 ========== */
        .tag {
            display: inline-flex;
            align-items: center;
            padding: 0.25rem 0.7rem;
            font-size: 0.75rem;
            font-weight: 600;
            border-radius: 2rem;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .tag-accent {
            background: rgba(249, 115, 22, 0.1);
            color: var(--color-accent);
        }

        .tag-primary {
            background: rgba(31, 58, 82, 0.08);
            color: var(--color-primary);
        }

        /* ========== 流程步骤样式 ========== */
        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #ffffff;
            font-weight: 700;
            font-size: 1.15rem;
            flex-shrink: 0;
        }

        .step-connector {
            width: 2px;
            height: 40px;
            background: linear-gradient(to bottom, var(--color-primary), transparent);
            margin: 0.25rem 0;
        }

        /* ========== FAQ 样式 ========== */
        .faq-item {
            border-bottom: 1px solid var(--color-border);
            padding: 1.25rem 0;
            cursor: pointer;
            transition: var(--transition-base);
        }

        .faq-item:first-child {
            border-top: 1px solid var(--color-border);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--color-primary);
            transition: var(--transition-base);
            user-select: none;
        }

        .faq-question:hover {
            color: var(--color-accent);
        }

        .faq-icon {
            flex-shrink: 0;
            transition: transform 0.3s ease;
            font-size: 0.9rem;
            color: var(--color-text-muted);
        }

        .faq-item.open .faq-icon {
            transform: rotate(180deg);
            color: var(--color-accent);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            color: var(--color-text-soft);
            line-height: 1.7;
            font-size: 0.95rem;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-top: 0.75rem;
        }

        /* ========== 页脚样式 ========== */
        .site-footer {
            background: var(--color-primary);
            color: #cbd5e1;
            padding: 3.5rem 0 1.5rem;
            margin-top: 2rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
        }

        .footer-brand-name {
            font-size: 1.3rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 0.75rem;
        }

        .footer-brand-desc {
            font-size: 0.9rem;
            line-height: 1.65;
            color: #94a3b8;
            max-width: 360px;
        }

        .footer-col h4 {
            font-size: 0.85rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: #e2e8f0;
            margin-bottom: 1rem;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .footer-col ul li a {
            color: #94a3b8;
            font-size: 0.9rem;
            transition: var(--transition-base);
            display: inline-flex;
            align-items: center;
        }

        .footer-col ul li a:hover {
            color: #ffffff;
            transform: translateX(3px);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.75rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.8rem;
            color: #64748b;
        }

        @media (max-width: 520px) {
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        /* ========== 动画 ========== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .animate-fade-in-up {
            animation: fadeInUp 0.6s ease forwards;
        }

        .animate-delay-1 { animation-delay: 0.1s; opacity: 0; }
        .animate-delay-2 { animation-delay: 0.2s; opacity: 0; }
        .animate-delay-3 { animation-delay: 0.3s; opacity: 0; }
        .animate-delay-4 { animation-delay: 0.4s; opacity: 0; }

        /* ========== 页面特有：Banner 覆盖层 ========== */
        .banner-overlay {
            background: linear-gradient(
                135deg,
                rgba(31, 58, 82, 0.88) 0%,
                rgba(31, 58, 82, 0.72) 40%,
                rgba(15, 30, 50, 0.6) 100%
            );
        }

        /* ========== 页面特有：统计数字样式 ========== */
        .stat-value {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: -0.03em;
            line-height: 1;
        }

        @media (max-width: 768px) {
            .stat-value {
                font-size: 2rem;
            }
        }

        /* ========== 搜索框样式 ========== */
        .search-input-wrapper {
            position: relative;
            max-width: 420px;
        }

        .search-input-wrapper input {
            width: 100%;
            padding: 0.75rem 3rem 0.75rem 1.25rem;
            border: 1.5px solid var(--color-border);
            border-radius: 2.5rem;
            font-size: 0.95rem;
            background: var(--color-surface);
            color: var(--color-text);
            transition: var(--transition-smooth);
            outline: none;
        }

        .search-input-wrapper input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 4px rgba(31, 58, 82, 0.06);
        }

        .search-input-wrapper .search-icon {
            position: absolute;
            right: 1rem;
            top: 50%;
            transform: translateY(-50%);
            color: var(--color-text-muted);
            pointer-events: none;
            font-size: 0.95rem;
        }

        /* ========== 响应式补充 ========== */
        @media (max-width: 1024px) {
            .header-inner {
                padding: 0 1.25rem;
            }
            .section-container {
                padding: 0 1.25rem;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                padding: 0 1rem;
            }
            .section-container {
                padding: 0 1rem;
            }
            .btn-primary,
            .btn-outline {
                padding: 0.7rem 1.4rem;
                font-size: 0.875rem;
            }
        }

/* roulang page: article */
:root {
            --color-brand-600: #2c5a7a;
            --color-brand-700: #254963;
            --color-brand-800: #1e3a50;
            --color-accent-500: #e88926;
            --color-accent-600: #d46e1c;
            --color-surface-light: #fafbfc;
            --color-surface-card: #ffffff;
            --color-surface-muted: #f3f5f7;
            --color-surface-border: #e6e9ed;
            --color-ink-primary: #1a1d23;
            --color-ink-secondary: #4a5058;
            --color-ink-tertiary: #7c8490;
            --radius-xl: 0.875rem;
            --radius-2xl: 1rem;
            --radius-3xl: 1.25rem;
            --shadow-soft: 0 1px 3px rgba(13,28,40,0.04), 0 4px 16px rgba(13,28,40,0.06);
            --shadow-card: 0 1px 2px rgba(13,28,40,0.04), 0 8px 24px rgba(13,28,40,0.07);
            --shadow-elevated: 0 2px 8px rgba(13,28,40,0.06), 0 16px 40px rgba(13,28,40,0.10);
            --transition-fast: 180ms cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 280ms cubic-bezier(0.4, 0, 0.2, 1);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

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

        body {
            margin: 0;
            padding: 0;
            font-family: 'Inter', 'Noto Sans SC', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-ink-primary);
            background-color: var(--color-surface-light);
            overflow-x: hidden;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
        }

        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        /* 容器 */
        .container-custom {
            width: 100%;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        @media (min-width: 768px) {
            .container-custom {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        @media (min-width: 1024px) {
            .container-custom {
                padding-left: 2.5rem;
                padding-right: 2.5rem;
            }
        }

        /* 导航 - 极简高端文字导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid transparent;
            box-shadow: var(--shadow-nav, 0 1px 0 rgba(13, 28, 40, 0.06));
            transition: box-shadow var(--transition-smooth), background var(--transition-smooth);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 2rem;
        }

        @media (min-width: 768px) {
            .header-inner {
                height: 72px;
            }
        }

        .brand-logo {
            font-family: 'Inter', 'Noto Sans SC', system-ui, sans-serif;
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--color-brand-700);
            white-space: nowrap;
            flex-shrink: 0;
            transition: color var(--transition-fast);
        }

        .brand-logo:hover {
            color: var(--color-brand-600);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links li a {
            display: inline-flex;
            align-items: center;
            padding: 0.5rem 1rem;
            font-size: 0.925rem;
            font-weight: 500;
            letter-spacing: 0.01em;
            color: var(--color-ink-secondary);
            border-radius: 0.5rem;
            position: relative;
            transition: color var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
        }

        .nav-links li a:hover {
            color: var(--color-brand-700);
            background: rgba(44, 90, 122, 0.05);
        }

        .nav-links li a.active {
            color: var(--color-brand-700);
            font-weight: 600;
        }

        .nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2.5px;
            background: var(--color-accent-500);
            border-radius: 2px;
        }

        /* 移动端导航 */
        .mobile-menu-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: none;
            border: none;
            padding: 0;
            color: var(--color-ink-primary);
            font-size: 1.35rem;
            border-radius: 0.5rem;
            transition: background var(--transition-fast), color var(--transition-fast);
        }

        .mobile-menu-btn:hover {
            background: var(--color-surface-muted);
            color: var(--color-brand-700);
        }

        @media (min-width: 769px) {
            .mobile-menu-btn {
                display: none;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.97);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: 0.75rem 1rem;
                border-bottom: 1px solid var(--color-surface-border);
                box-shadow: var(--shadow-elevated);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: transform var(--transition-smooth), opacity var(--transition-smooth);
                z-index: 99;
            }

            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }

            .nav-links li a {
                padding: 0.75rem 1rem;
                font-size: 1rem;
                width: 100%;
                border-radius: 0.5rem;
            }

            .nav-links li a.active::after {
                display: none;
            }

            .nav-links li a.active {
                background: rgba(44, 90, 122, 0.07);
                border-radius: 0.5rem;
            }

            .header-inner {
                height: 64px;
            }
        }

        /* 面包屑 */
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.8);
            padding: 0;
            margin: 0 0 0.75rem 0;
            list-style: none;
        }

        .breadcrumb li {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }

        .breadcrumb li a {
            color: rgba(255, 255, 255, 0.85);
            transition: color var(--transition-fast);
            font-weight: 500;
        }

        .breadcrumb li a:hover {
            color: #ffffff;
            text-decoration: underline;
        }

        .breadcrumb li.separator {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.75rem;
            user-select: none;
        }

        .breadcrumb li.current {
            color: #ffffff;
            font-weight: 600;
            pointer-events: none;
        }

        /* 文章 Banner */
        .article-banner {
            position: relative;
            background: linear-gradient(145deg, #1e3a50 0%, #162c3d 35%, #0d1c28 100%);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 3.5rem 0 3rem;
            overflow: hidden;
        }

        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(13, 28, 40, 0.55) 0%, rgba(13, 28, 40, 0.78) 100%);
            z-index: 1;
        }

        .article-banner-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            margin: 0 auto;
            text-align: center;
            padding: 0 1rem;
        }

        .article-banner .article-category-tag {
            display: inline-block;
            padding: 0.35rem 0.9rem;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #ffffff;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            border-radius: 2rem;
            margin-bottom: 1rem;
        }

        .article-banner h1 {
            font-family: 'Inter', 'Noto Sans SC', system-ui, sans-serif;
            font-size: 1.75rem;
            font-weight: 700;
            line-height: 1.35;
            color: #ffffff;
            margin: 0 0 0.75rem 0;
            letter-spacing: -0.01em;
        }

        @media (min-width: 768px) {
            .article-banner h1 {
                font-size: 2.25rem;
            }
            .article-banner {
                padding: 5rem 0 4rem;
            }
        }

        @media (min-width: 1024px) {
            .article-banner h1 {
                font-size: 2.6rem;
            }
            .article-banner {
                padding: 6rem 0 4.5rem;
            }
        }

        .article-banner .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 1rem;
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.875rem;
            font-weight: 500;
        }

        .article-banner .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
        }

        .article-banner .article-meta .meta-dot {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.4);
        }

        /* 文章正文区域 */
        .article-main-section {
            padding: 3rem 0 4rem;
            background: #ffffff;
        }

        @media (min-width: 768px) {
            .article-main-section {
                padding: 4rem 0 5rem;
            }
        }

        .article-content-wrapper {
            max-width: 780px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        @media (min-width: 768px) {
            .article-content-wrapper {
                padding: 0 2rem;
            }
        }

        .article-content {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--color-ink-primary);
        }

        .article-content h2 {
            font-family: 'Inter', 'Noto Sans SC', system-ui, sans-serif;
            font-size: 1.45rem;
            font-weight: 700;
            line-height: 1.4;
            color: var(--color-brand-800);
            margin: 2.5rem 0 1rem;
            padding-top: 0.5rem;
            letter-spacing: -0.01em;
        }

        .article-content h3 {
            font-family: 'Inter', 'Noto Sans SC', system-ui, sans-serif;
            font-size: 1.2rem;
            font-weight: 600;
            line-height: 1.45;
            color: var(--color-ink-primary);
            margin: 2rem 0 0.75rem;
        }

        .article-content h4 {
            font-family: 'Inter', 'Noto Sans SC', system-ui, sans-serif;
            font-size: 1.05rem;
            font-weight: 600;
            line-height: 1.5;
            color: var(--color-ink-secondary);
            margin: 1.5rem 0 0.5rem;
        }

        .article-content p {
            margin: 0 0 1.25rem;
        }

        .article-content ul,
        .article-content ol {
            margin: 0 0 1.5rem;
            padding-left: 1.5rem;
        }

        .article-content ul li,
        .article-content ol li {
            margin-bottom: 0.5rem;
        }

        .article-content ul {
            list-style-type: disc;
        }

        .article-content ol {
            list-style-type: decimal;
        }

        .article-content blockquote {
            margin: 2rem 0;
            padding: 1.25rem 1.5rem;
            border-left: 4px solid var(--color-accent-500);
            background: var(--color-surface-muted);
            border-radius: 0 var(--radius-xl) var(--radius-xl) 0;
            font-style: italic;
            color: var(--color-ink-secondary);
            font-size: 1rem;
        }

        .article-content blockquote p {
            margin: 0;
        }

        .article-content a {
            color: var(--color-brand-600);
            font-weight: 500;
            text-decoration: underline;
            text-underline-offset: 3px;
            transition: color var(--transition-fast);
        }

        .article-content a:hover {
            color: var(--color-brand-800);
        }

        .article-content img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius-2xl);
            margin: 1.5rem 0;
            box-shadow: var(--shadow-soft);
        }

        .article-content code {
            background: var(--color-surface-muted);
            padding: 0.15em 0.4em;
            border-radius: 0.35rem;
            font-size: 0.9em;
            color: var(--color-brand-700);
            font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
        }

        .article-content pre {
            background: #1a1d23;
            color: #e4e7eb;
            padding: 1.25rem 1.5rem;
            border-radius: var(--radius-2xl);
            overflow-x: auto;
            margin: 1.5rem 0;
            font-size: 0.9rem;
            line-height: 1.6;
        }

        .article-content pre code {
            background: none;
            padding: 0;
            color: inherit;
            font-size: inherit;
            border-radius: 0;
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            font-size: 0.95rem;
        }

        .article-content table th,
        .article-content table td {
            padding: 0.75rem 1rem;
            border: 1px solid var(--color-surface-border);
            text-align: left;
        }

        .article-content table th {
            background: var(--color-surface-muted);
            font-weight: 600;
            color: var(--color-ink-primary);
        }

        .article-content hr {
            border: none;
            border-top: 1px solid var(--color-surface-border);
            margin: 2.5rem 0;
        }

        /* 文章分隔线 */
        .article-divider {
            max-width: 780px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        @media (min-width: 768px) {
            .article-divider {
                padding: 0 2rem;
            }
        }

        .article-divider hr {
            border: none;
            border-top: 1px solid var(--color-surface-border);
            margin: 0;
        }

        /* 相关文章 */
        .related-posts-section {
            padding: 3rem 0 4rem;
            background: var(--color-surface-light);
        }

        @media (min-width: 768px) {
            .related-posts-section {
                padding: 4rem 0 5rem;
            }
        }

        .section-label {
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--color-accent-500);
            margin-bottom: 0.5rem;
        }

        .section-heading {
            font-family: 'Inter', 'Noto Sans SC', system-ui, sans-serif;
            font-size: 1.6rem;
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--color-ink-primary);
            margin: 0 0 2rem;
        }

        @media (min-width: 768px) {
            .section-heading {
                font-size: 1.85rem;
            }
        }

        .related-posts-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }

        @media (min-width: 640px) {
            .related-posts-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .related-posts-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        .related-post-card {
            background: #ffffff;
            border-radius: var(--radius-2xl);
            overflow: hidden;
            box-shadow: var(--shadow-soft);
            transition: box-shadow var(--transition-smooth), transform var(--transition-smooth);
            display: flex;
            flex-direction: column;
            border: 1px solid var(--color-surface-border);
        }

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

        .related-post-card .card-image {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
            background: var(--color-surface-muted);
        }

        .related-post-card .card-body {
            padding: 1.25rem 1.25rem 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
        }

        .related-post-card .card-category {
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            color: var(--color-accent-500);
            text-transform: uppercase;
        }

        .related-post-card .card-title {
            font-family: 'Inter', 'Noto Sans SC', system-ui, sans-serif;
            font-size: 1.05rem;
            font-weight: 600;
            line-height: 1.45;
            color: var(--color-ink-primary);
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }

        .related-post-card:hover .card-title {
            color: var(--color-brand-700);
        }

        .related-post-card .card-date {
            font-size: 0.8rem;
            color: var(--color-ink-tertiary);
            margin-top: auto;
        }

        /* CTA 区域 */
        .cta-section {
            padding: 3.5rem 0;
            background: linear-gradient(160deg, #1e3a50 0%, #254963 100%);
            text-align: center;
        }

        @media (min-width: 768px) {
            .cta-section {
                padding: 5rem 0;
            }
        }

        .cta-section .cta-heading {
            font-family: 'Inter', 'Noto Sans SC', system-ui, sans-serif;
            font-size: 1.5rem;
            font-weight: 700;
            color: #ffffff;
            margin: 0 0 0.75rem;
            letter-spacing: -0.01em;
        }

        @media (min-width: 768px) {
            .cta-section .cta-heading {
                font-size: 1.85rem;
            }
        }

        .cta-section .cta-subtext {
            color: rgba(255, 255, 255, 0.8);
            font-size: 0.95rem;
            margin: 0 0 1.75rem;
            line-height: 1.6;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.8rem 2rem;
            background: var(--color-accent-500);
            color: #ffffff;
            font-weight: 600;
            font-size: 0.95rem;
            border-radius: 3rem;
            border: none;
            text-decoration: none;
            transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
            box-shadow: 0 4px 14px rgba(232, 137, 38, 0.3);
            letter-spacing: 0.01em;
        }

        .btn-primary:hover {
            background: var(--color-accent-600);
            box-shadow: 0 6px 22px rgba(232, 137, 38, 0.4);
            transform: translateY(-1px);
            color: #ffffff;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(232, 137, 38, 0.3);
        }

        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.7rem 1.75rem;
            background: transparent;
            color: #ffffff;
            font-weight: 500;
            font-size: 0.9rem;
            border-radius: 3rem;
            border: 1.5px solid rgba(255, 255, 255, 0.4);
            text-decoration: none;
            transition: border-color var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
            letter-spacing: 0.01em;
        }

        .btn-outline-light:hover {
            border-color: #ffffff;
            background: rgba(255, 255, 255, 0.08);
            color: #ffffff;
        }

        /* 未找到文章状态 */
        .not-found-section {
            padding: 4rem 0 5rem;
            background: #ffffff;
            text-align: center;
        }

        .not-found-icon {
            font-size: 4rem;
            color: var(--color-ink-tertiary);
            margin-bottom: 1.5rem;
            opacity: 0.6;
        }

        .not-found-title {
            font-family: 'Inter', 'Noto Sans SC', system-ui, sans-serif;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-ink-primary);
            margin: 0 0 0.75rem;
        }

        .not-found-desc {
            color: var(--color-ink-tertiary);
            font-size: 0.95rem;
            margin: 0 0 2rem;
            line-height: 1.6;
        }

        /* 页脚 */
        .site-footer {
            background: #1a1d23;
            color: #c5cad3;
            padding: 3rem 0 1.5rem;
            font-size: 0.9rem;
        }

        @media (min-width: 768px) {
            .site-footer {
                padding: 4rem 0 2rem;
            }
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            margin-bottom: 2.5rem;
        }

        @media (min-width: 640px) {
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr;
                gap: 2.5rem;
            }
        }

        @media (min-width: 1024px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
                gap: 3rem;
            }
        }

        .footer-brand-name {
            font-family: 'Inter', 'Noto Sans SC', system-ui, sans-serif;
            font-size: 1.2rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 0.5rem;
            letter-spacing: -0.01em;
        }

        .footer-brand-desc {
            color: #9ca3af;
            line-height: 1.6;
            margin: 0;
            font-size: 0.875rem;
            max-width: 320px;
        }

        .footer-col h4 {
            font-family: 'Inter', 'Noto Sans SC', system-ui, sans-serif;
            font-size: 0.85rem;
            font-weight: 600;
            color: #ffffff;
            margin: 0 0 0.75rem;
            letter-spacing: 0.03em;
            text-transform: uppercase;
        }

        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .footer-col ul li a {
            color: #9ca3af;
            font-size: 0.875rem;
            transition: color var(--transition-fast);
            display: inline-flex;
            align-items: center;
        }

        .footer-col ul li a:hover {
            color: #ffffff;
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 0.75rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.8rem;
            color: #6b7280;
        }

        @media (max-width: 520px) {
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* 回到顶部按钮 */
        .back-to-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            z-index: 90;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: #ffffff;
            border: 1px solid var(--color-surface-border);
            box-shadow: var(--shadow-card);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-ink-secondary);
            font-size: 1.1rem;
            cursor: pointer;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition-smooth), box-shadow var(--transition-smooth), transform var(--transition-fast);
            transform: translateY(8px);
        }

        .back-to-top.visible {
            opacity: 1;
            pointer-events: auto;
            transform: translateY(0);
        }

        .back-to-top:hover {
            box-shadow: var(--shadow-elevated);
            color: var(--color-brand-700);
            transform: translateY(-2px);
        }

        /* 分享按钮组 */
        .share-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            justify-content: center;
            margin-top: 2rem;
        }

        .share-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.55rem 1.1rem;
            border-radius: 2rem;
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid var(--color-surface-border);
            background: #ffffff;
            color: var(--color-ink-secondary);
            transition: all var(--transition-fast);
            cursor: pointer;
            text-decoration: none;
        }

        .share-btn:hover {
            background: var(--color-surface-muted);
            border-color: var(--color-ink-tertiary);
            color: var(--color-ink-primary);
        }

        /* 响应式微调 */
        @media (max-width: 520px) {
            .article-banner h1 {
                font-size: 1.4rem;
            }
            .article-content {
                font-size: 0.95rem;
            }
            .article-content h2 {
                font-size: 1.25rem;
            }
            .related-posts-grid {
                grid-template-columns: 1fr;
            }
            .share-buttons {
                flex-direction: column;
                align-items: stretch;
            }
            .share-btn {
                justify-content: center;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #1a365d;
            --color-primary-light: #2c5282;
            --color-primary-dark: #0f2747;
            --color-accent: #c2853c;
            --color-accent-light: #d4a853;
            --color-bg: #fafaf8;
            --color-surface: #ffffff;
            --color-text: #1a202c;
            --color-text-secondary: #4a5568;
            --color-text-muted: #718096;
            --color-border: #e2e8f0;
            --color-border-light: #edf2f7;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
            --shadow-sm: 0 1px 4px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.07);
            --shadow-lg: 0 8px 30px rgba(0,0,0,0.10);
            --shadow-xl: 0 12px 40px rgba(0,0,0,0.12);
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
        }

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

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
            padding: 0;
        }

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

        h1, h2, h3, h4, h5, h6 {
            margin: 0;
            line-height: 1.35;
            color: var(--color-primary-dark);
        }

        p {
            margin: 0;
        }

        /* ===== 容器 ===== */
        .container-custom {
            width: 100%;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (max-width: 768px) {
            .container-custom {
                padding-left: 18px;
                padding-right: 18px;
            }
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: rgba(255,255,255,0.96);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--color-border-light);
            transition: box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-sm);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }

        .header-logo:hover {
            color: var(--color-primary-light);
        }

        .header-logo .logo-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: var(--color-accent);
            display: inline-block;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 2px;
        }

        .nav-links li {
            position: relative;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            border-radius: 6px;
            transition: color var(--transition-fast), background-color var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 18px;
            right: 18px;
            height: 2px;
            background-color: var(--color-accent);
            border-radius: 1px;
            transform: scaleX(0);
            transform-origin: center;
            transition: transform var(--transition-base);
        }

        .nav-links a:hover {
            color: var(--color-primary);
            background-color: rgba(26,54,93,0.04);
        }

        .nav-links a:hover::after {
            transform: scaleX(0.6);
        }

        .nav-links a.active {
            color: var(--color-primary);
            font-weight: 600;
        }

        .nav-links a.active::after {
            transform: scaleX(1);
            background-color: var(--color-accent);
        }

        /* 移动端菜单按钮 */
        .mobile-menu-btn {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            color: var(--color-text);
            font-size: 1.3rem;
            transition: background-color var(--transition-fast);
            flex-shrink: 0;
        }

        .mobile-menu-btn:hover {
            background-color: rgba(0,0,0,0.04);
        }

        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: flex;
            }
            .nav-links {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                gap: 0;
                padding: 8px 0;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-md);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: transform var(--transition-base), opacity var(--transition-base);
                z-index: 99;
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-links a {
                width: 100%;
                padding: 14px 24px;
                border-radius: 0;
                font-size: 1rem;
            }
            .nav-links a::after {
                display: none;
            }
            .nav-links a.active {
                background-color: rgba(26,54,93,0.05);
                border-left: 3px solid var(--color-accent);
            }
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.875rem;
            color: var(--color-text-muted);
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--color-primary);
        }
        .breadcrumb .separator {
            color: var(--color-border);
            font-size: 0.7rem;
        }
        .breadcrumb .current {
            color: var(--color-primary);
            font-weight: 500;
        }

        /* ===== 板块间距 ===== */
        .section {
            padding: 72px 0;
        }
        .section-sm {
            padding: 48px 0;
        }
        .section-lg {
            padding: 96px 0;
        }

        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section-sm {
                padding: 32px 0;
            }
            .section-lg {
                padding: 64px 0;
            }
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: box-shadow var(--transition-base), transform var(--transition-base);
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .card-image {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
        }
        .card-body {
            padding: 20px 22px 24px;
        }
        .card-tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 500;
            color: var(--color-accent);
            background-color: rgba(194,133,60,0.08);
            padding: 4px 10px;
            border-radius: 20px;
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }
        .card-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--color-primary-dark);
            margin-bottom: 8px;
            line-height: 1.45;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-summary {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--color-text-muted);
            margin-top: 12px;
            padding-top: 12px;
            border-top: 1px solid var(--color-border-light);
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: 50px;
            transition: all var(--transition-base);
            letter-spacing: 0.01em;
            white-space: nowrap;
            cursor: pointer;
            text-align: center;
        }
        .btn-primary {
            background-color: var(--color-primary);
            color: #fff;
            border: 2px solid var(--color-primary);
        }
        .btn-primary:hover {
            background-color: var(--color-primary-light);
            border-color: var(--color-primary-light);
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }
        .btn-outline {
            background-color: transparent;
            color: var(--color-primary);
            border: 2px solid var(--color-border);
        }
        .btn-outline:hover {
            border-color: var(--color-primary);
            background-color: rgba(26,54,93,0.03);
            box-shadow: var(--shadow-sm);
        }
        .btn-accent {
            background-color: var(--color-accent);
            color: #fff;
            border: 2px solid var(--color-accent);
        }
        .btn-accent:hover {
            background-color: #a66d2e;
            border-color: #a66d2e;
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
            border-radius: 40px;
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
            border-radius: 50px;
        }

        /* ===== 标签/徽章 ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            padding: 5px 12px;
            font-size: 0.78rem;
            font-weight: 500;
            border-radius: 20px;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .badge-accent {
            background-color: rgba(194,133,60,0.1);
            color: var(--color-accent);
        }
        .badge-primary {
            background-color: rgba(26,54,93,0.08);
            color: var(--color-primary);
        }

        /* ===== 服务卡片 ===== */
        .service-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            text-align: center;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--transition-slow);
        }
        .service-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: transparent;
        }
        .service-card:hover::before {
            transform: scaleX(1);
        }
        .service-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background-color: rgba(26,54,93,0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.4rem;
            color: var(--color-primary);
            transition: all var(--transition-base);
        }
        .service-card:hover .service-icon {
            background-color: var(--color-primary);
            color: #fff;
            transform: scale(1.05);
        }
        .service-card h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--color-primary-dark);
        }
        .service-card p {
            font-size: 0.88rem;
            color: var(--color-text-muted);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-item {
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--color-surface);
            transition: box-shadow var(--transition-fast);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-xs);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--color-text);
            text-align: left;
            background: none;
            border: none;
            cursor: pointer;
            gap: 12px;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-icon {
            flex-shrink: 0;
            font-size: 0.85rem;
            color: var(--color-text-muted);
            transition: transform var(--transition-base), color var(--transition-fast);
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
            color: var(--color-accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
        }
        .faq-item.open .faq-answer {
            max-height: 600px;
        }
        .faq-answer-inner {
            padding: 0 22px 20px;
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.75;
        }

        /* ===== 统计数字 ===== */
        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            line-height: 1;
        }
        .stat-label {
            font-size: 0.88rem;
            color: var(--color-text-muted);
            margin-top: 6px;
        }

        @media (max-width: 768px) {
            .stat-number {
                font-size: 2.2rem;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background-color: var(--color-primary-dark);
            color: rgba(255,255,255,0.8);
            padding: 56px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 40px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .footer-brand-name {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .footer-brand-desc {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255,255,255,0.6);
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col a {
            color: rgba(255,255,255,0.65);
            font-size: 0.88rem;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--color-accent-light);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            max-width: 1200px;
            margin: 36px auto 0;
            padding: 20px 24px 0;
            border-top: 1px solid rgba(255,255,255,0.12);
            font-size: 0.8rem;
            color: rgba(255,255,255,0.45);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 页面Banner ===== */
        .page-banner {
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
            overflow: hidden;
            background-color: var(--color-primary-dark);
        }
        .page-banner-bg {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.35;
            pointer-events: none;
        }
        .page-banner-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,39,71,0.82) 0%, rgba(26,54,93,0.6) 100%);
            pointer-events: none;
        }
        .page-banner-content {
            position: relative;
            z-index: 2;
            width: 100%;
            padding: 60px 0;
        }
        .page-banner-content h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
        }
        .page-banner-content .banner-subtitle {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.8);
            max-width: 560px;
            line-height: 1.7;
        }

        @media (max-width: 768px) {
            .page-banner {
                min-height: 280px;
            }
            .page-banner-content h1 {
                font-size: 1.8rem;
            }
            .page-banner-content .banner-subtitle {
                font-size: 0.95rem;
            }
        }

        /* ===== 亮点区块 ===== */
        .highlight-block {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            padding: 32px 28px;
            display: flex;
            align-items: flex-start;
            gap: 16px;
            transition: all var(--transition-base);
        }
        .highlight-block:hover {
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .highlight-icon {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background-color: rgba(26,54,93,0.07);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--color-primary);
        }
        .highlight-block h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--color-primary-dark);
            margin-bottom: 4px;
        }
        .highlight-block p {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            line-height: 1.6;
        }

        /* ===== 响应式网格 ===== */
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        @media (max-width: 1024px) {
            .grid-3,
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 辅助类 ===== */
        .text-center { text-align: center; }
        .mt-0 { margin-top: 0; }
        .mb-0 { margin-bottom: 0; }
        .section-heading {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--color-primary-dark);
            letter-spacing: -0.015em;
            margin-bottom: 8px;
        }
        .section-subheading {
            font-size: 1rem;
            color: var(--color-text-muted);
            max-width: 600px;
            line-height: 1.65;
        }
        @media (max-width: 768px) {
            .section-heading {
                font-size: 1.45rem;
            }
            .section-subheading {
                font-size: 0.9rem;
            }
        }

        /* ===== 筛选标签 ===== */
        .filter-tag {
            display: inline-flex;
            align-items: center;
            padding: 7px 16px;
            font-size: 0.85rem;
            font-weight: 500;
            border-radius: 24px;
            border: 1.5px solid var(--color-border);
            color: var(--color-text-secondary);
            cursor: pointer;
            transition: all var(--transition-fast);
            background: var(--color-surface);
            white-space: nowrap;
        }
        .filter-tag:hover,
        .filter-tag.active {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background-color: rgba(26,54,93,0.04);
        }
        .filter-tag.active {
            background-color: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            font-weight: 600;
        }

        /* 进度条 */
        .progress-bar-wrap {
            background: var(--color-border-light);
            border-radius: 10px;
            height: 8px;
            overflow: hidden;
        }
        .progress-bar-fill {
            height: 100%;
            border-radius: 10px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
            transition: width 0.6s ease;
        }