/* roulang page: index */
:root {
            --color-brand-700: #0f766e;
            --color-brand-800: #115e59;
            --color-brand-900: #134e4a;
            --color-accent-500: #f59e0b;
            --color-surface: #ffffff;
            --color-bg: #f8fafc;
            --color-bg-alt: #f1f5f9;
            --color-text: #1e293b;
            --color-text-soft: #64748b;
            --color-border: #e2e8f0;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-card: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
            --shadow-card-hover: 0 10px 25px rgba(0,0,0,.08), 0 4px 10px rgba(0,0,0,.04);
            --shadow-nav: 0 1px 0 rgba(0,0,0,.05), 0 2px 8px rgba(0,0,0,.04);
            --transition-base: 180ms ease;
        }

        *,
        *::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: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: #1e293b;
            background-color: #f8fafc;
            min-height: 100vh;
        }

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

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

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

        .container-custom {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* 导航栏 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow-nav);
            border-bottom: 1px solid var(--color-border);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .nav-logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: #115e59;
            letter-spacing: 0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: color var(--transition-base);
        }

        .nav-logo:hover {
            color: #0f766e;
        }

        .nav-logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, #0f766e 0%, #134e4a 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a:not(.nav-cta-btn) {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 0.925rem;
            font-weight: 500;
            color: #475569;
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .nav-links a:not(.nav-cta-btn):hover {
            color: #0f766e;
            background: #f0fdfa;
        }

        .nav-links a.nav-active {
            color: #0f766e;
            background: #f0fdfa;
            font-weight: 600;
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 22px;
            border-radius: 8px;
            font-size: 0.925rem;
            font-weight: 600;
            color: #ffffff !important;
            background: linear-gradient(135deg, #0f766e 0%, #115e59 100%);
            box-shadow: 0 2px 8px rgba(15,118,110,0.25);
            transition: all var(--transition-base);
            white-space: nowrap;
            margin-left: 8px;
        }

        .nav-cta-btn:hover {
            box-shadow: 0 4px 16px rgba(15,118,110,0.35);
            transform: translateY(-1px);
        }

        .nav-cta-btn:active {
            transform: translateY(0);
            box-shadow: 0 1px 4px rgba(15,118,110,0.2);
        }

        /* 移动端菜单按钮 */
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: #334155;
            padding: 8px;
            border-radius: 8px;
            transition: background var(--transition-base);
        }

        .mobile-menu-btn:hover {
            background: #f1f5f9;
        }

        .mobile-menu {
            display: none;
            position: absolute;
            top: 64px;
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 8px 24px rgba(0,0,0,.08);
            padding: 12px 20px;
            flex-direction: column;
            gap: 4px;
            z-index: 999;
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu a {
            display: block;
            padding: 12px 16px;
            border-radius: 8px;
            font-size: 0.95rem;
            font-weight: 500;
            color: #475569;
            transition: all var(--transition-base);
        }

        .mobile-menu a:hover,
        .mobile-menu a.mobile-active {
            color: #0f766e;
            background: #f0fdfa;
        }

        .mobile-menu .mobile-cta {
            margin-top: 4px;
            text-align: center;
            background: linear-gradient(135deg, #0f766e 0%, #115e59 100%);
            color: #fff !important;
            font-weight: 600;
            border-radius: 8px;
            padding: 12px 16px;
        }

        /* Hero */
        .hero-section {
            position: relative;
            background: linear-gradient(160deg, #0a3330 0%, #115e59 30%, #0f766e 60%, #0d9488 100%);
            overflow: hidden;
            min-height: 580px;
            display: flex;
            align-items: center;
        }

        .hero-bg-overlay {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            mix-blend-mode: overlay;
            pointer-events: none;
        }

        .hero-pattern {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(255,255,255,0.06) 0%, transparent 60%),
                        radial-gradient(ellipse at 70% 30%, rgba(255,255,255,0.04) 0%, transparent 55%);
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 1200px;
            margin: 0 auto;
            padding: 80px 20px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .hero-text {
            color: #ffffff;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            background: rgba(255,255,255,0.15);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255,255,255,0.2);
            color: #ccfbf1;
            margin-bottom: 20px;
            letter-spacing: 0.03em;
        }

        .hero-text h1 {
            font-size: 2.75rem;
            font-weight: 800;
            line-height: 1.25;
            margin: 0 0 16px 0;
            letter-spacing: 0.02em;
            color: #ffffff;
        }

        .hero-text .hero-subtitle {
            font-size: 1.15rem;
            color: #ccfbf1;
            line-height: 1.65;
            margin: 0 0 32px 0;
            opacity: 0.92;
            max-width: 520px;
        }

        .hero-buttons {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 30px;
            border-radius: 10px;
            font-size: 1rem;
            font-weight: 600;
            color: #115e59;
            background: #ffffff;
            box-shadow: 0 4px 16px rgba(0,0,0,0.12);
            transition: all var(--transition-base);
            border: none;
        }

        .btn-hero-primary:hover {
            box-shadow: 0 8px 28px rgba(0,0,0,0.2);
            transform: translateY(-2px);
        }

        .btn-hero-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 30px;
            border-radius: 10px;
            font-size: 1rem;
            font-weight: 600;
            color: #ffffff;
            background: transparent;
            border: 2px solid rgba(255,255,255,0.45);
            transition: all var(--transition-base);
        }

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

        .hero-stats {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .hero-stat-card {
            background: rgba(255,255,255,0.1);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255,255,255,0.18);
            border-radius: var(--radius-lg);
            padding: 24px;
            text-align: center;
            color: #ffffff;
            transition: all var(--transition-base);
        }

        .hero-stat-card:hover {
            background: rgba(255,255,255,0.16);
            border-color: rgba(255,255,255,0.3);
            transform: translateY(-2px);
        }

        .hero-stat-number {
            font-size: 2.25rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            line-height: 1.1;
            color: #fde68a;
            margin-bottom: 6px;
        }

        .hero-stat-label {
            font-size: 0.875rem;
            color: #ccfbf1;
            opacity: 0.9;
        }

        /* 板块通用 */
        .section {
            padding: 72px 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-label {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            color: #0f766e;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 10px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: #1e293b;
            margin: 0 0 12px 0;
            letter-spacing: 0.02em;
        }

        .section-desc {
            font-size: 1.05rem;
            color: #64748b;
            max-width: 620px;
            margin: 0 auto;
            line-height: 1.7;
        }

        /* KPI 数据板块 */
        .kpi-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .kpi-card {
            background: #ffffff;
            border: 1px solid #e2e8f0;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }

        .kpi-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, #0f766e 0%, #2dd4bf 100%);
            opacity: 0;
            transition: opacity var(--transition-base);
        }

        .kpi-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: #cbd5e1;
        }

        .kpi-card:hover::before {
            opacity: 1;
        }

        .kpi-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: #f0fdfa;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.3rem;
            color: #0f766e;
        }

        .kpi-number {
            font-size: 2.25rem;
            font-weight: 800;
            color: #0f766e;
            letter-spacing: 0.02em;
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .kpi-label {
            font-size: 0.9rem;
            color: #64748b;
            font-weight: 500;
        }

        /* 服务入口卡片 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .service-card {
            background: #ffffff;
            border: 1px solid #e2e8f0;
            border-radius: var(--radius-xl);
            overflow: hidden;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
        }

        .service-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: #cbd5e1;
        }

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

        .service-card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .service-card-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 14px;
            font-size: 0.8rem;
            font-weight: 600;
            background: #f0fdfa;
            color: #0f766e;
            margin-bottom: 10px;
            width: fit-content;
        }

        .service-card-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: #1e293b;
            margin: 0 0 8px 0;
        }

        .service-card-desc {
            font-size: 0.925rem;
            color: #64748b;
            margin: 0 0 18px 0;
            flex: 1;
            line-height: 1.6;
        }

        .service-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.925rem;
            color: #0f766e;
            transition: gap var(--transition-base);
        }

        .service-card-link:hover {
            gap: 10px;
            color: #115e59;
        }

        /* CMS 列表 */
        .cms-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .cms-item {
            background: #ffffff;
            border: 1px solid #e2e8f0;
            border-radius: var(--radius-md);
            padding: 22px 24px;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .cms-item:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: #cbd5e1;
            transform: translateY(-2px);
        }

        .cms-item-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: #94a3b8;
        }

        .cms-item-category {
            padding: 2px 10px;
            border-radius: 10px;
            font-size: 0.78rem;
            font-weight: 600;
            background: #f0fdfa;
            color: #0f766e;
        }

        .cms-item-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: #1e293b;
            line-height: 1.4;
            margin: 0;
            transition: color var(--transition-base);
        }

        .cms-item:hover .cms-item-title {
            color: #0f766e;
        }

        .cms-item-desc {
            font-size: 0.875rem;
            color: #64748b;
            line-height: 1.55;
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .cms-empty {
            text-align: center;
            padding: 40px 20px;
            color: #94a3b8;
            font-size: 1rem;
            background: #ffffff;
            border-radius: var(--radius-md);
            border: 1px dashed #e2e8f0;
            grid-column: 1 / -1;
        }

        /* 信任证据 */
        .trust-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .trust-card {
            background: #ffffff;
            border: 1px solid #e2e8f0;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
        }

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

        .trust-icon-circle {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: #f0fdfa;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.5rem;
            color: #0f766e;
        }

        .trust-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #1e293b;
            margin: 0 0 8px 0;
        }

        .trust-card p {
            font-size: 0.9rem;
            color: #64748b;
            margin: 0;
            line-height: 1.55;
        }

        /* 特色优势 */
        .feature-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .feature-image-wrap {
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-card-hover);
        }

        .feature-image-wrap img {
            width: 100%;
            height: auto;
            display: block;
        }

        .feature-text h3 {
            font-size: 1.6rem;
            font-weight: 700;
            color: #1e293b;
            margin: 0 0 12px 0;
        }

        .feature-text p {
            font-size: 1rem;
            color: #64748b;
            line-height: 1.7;
            margin: 0 0 20px 0;
        }

        .feature-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.95rem;
            color: #334155;
        }

        .feature-list li .feat-check {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: #f0fdfa;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.7rem;
            color: #0f766e;
            margin-top: 2px;
        }

        /* FAQ */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .faq-item {
            background: #ffffff;
            border: 1px solid #e2e8f0;
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-card);
        }

        .faq-item:hover {
            border-color: #cbd5e1;
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            background: none;
            border: none;
            font-size: 1rem;
            font-weight: 600;
            color: #1e293b;
            text-align: left;
            cursor: pointer;
            gap: 12px;
            transition: color var(--transition-base);
        }

        .faq-question:hover {
            color: #0f766e;
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            transition: transform var(--transition-base);
            font-size: 0.85rem;
            color: #94a3b8;
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
            color: #0f766e;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 350ms ease, padding 350ms ease;
        }

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

        .faq-answer-inner {
            padding: 0 22px 20px;
            font-size: 0.925rem;
            color: #475569;
            line-height: 1.7;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(160deg, #0a3330 0%, #115e59 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.1;
            mix-blend-mode: overlay;
            pointer-events: none;
        }

        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 64px 20px;
            color: #ffffff;
        }

        .cta-content h3 {
            font-size: 1.8rem;
            font-weight: 700;
            margin: 0 0 12px 0;
        }

        .cta-content p {
            font-size: 1.05rem;
            color: #ccfbf1;
            opacity: 0.9;
            margin: 0 0 28px 0;
        }

        .btn-cta-large {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 16px 36px;
            border-radius: 10px;
            font-size: 1.05rem;
            font-weight: 700;
            color: #115e59;
            background: #ffffff;
            box-shadow: 0 6px 20px rgba(0,0,0,0.2);
            transition: all var(--transition-base);
            border: none;
        }

        .btn-cta-large:hover {
            box-shadow: 0 10px 30px rgba(0,0,0,0.3);
            transform: translateY(-2px);
        }

        /* 页脚 */
        .site-footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 48px 0 28px;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 36px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .footer-brand .footer-logo {
            font-size: 1.2rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 10px;
        }

        .footer-brand p {
            color: #94a3b8;
            line-height: 1.6;
            margin: 0;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #e2e8f0;
            margin: 0 0 14px 0;
        }

        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            color: #94a3b8;
            transition: color var(--transition-base);
            font-size: 0.875rem;
        }

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

        .footer-bottom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px 20px 0;
            border-top: 1px solid #1e293b;
            margin-top: 32px;
            text-align: center;
            color: #64748b;
            font-size: 0.825rem;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .hero-content {
                grid-template-columns: 1fr;
                gap: 32px;
                padding: 56px 20px;
            }
            .hero-text h1 {
                font-size: 2.2rem;
            }
            .hero-stats {
                grid-template-columns: repeat(4, 1fr);
            }
            .hero-stat-number {
                font-size: 1.6rem;
            }
            .hero-stat-label {
                font-size: 0.78rem;
            }
            .kpi-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cms-list {
                grid-template-columns: 1fr;
            }
            .feature-row {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .trust-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .mobile-menu-btn {
                display: block;
            }
            .hero-text h1 {
                font-size: 1.75rem;
            }
            .hero-stats {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-stat-number {
                font-size: 1.5rem;
            }
            .kpi-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .kpi-number {
                font-size: 1.7rem;
            }
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .trust-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .hero-buttons {
                flex-direction: column;
            }
            .btn-hero-primary,
            .btn-hero-outline {
                justify-content: center;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .hero-text h1 {
                font-size: 1.5rem;
            }
            .hero-subtitle {
                font-size: 0.95rem;
            }
            .kpi-grid {
                grid-template-columns: 1fr 1fr;
            }
            .kpi-card {
                padding: 18px 12px;
            }
            .kpi-number {
                font-size: 1.4rem;
            }
            .service-card-img {
                height: 150px;
            }
            .cms-item {
                padding: 16px;
            }
            .cta-content h3 {
                font-size: 1.35rem;
            }
            .faq-question {
                font-size: 0.9rem;
                padding: 14px 16px;
            }
        }

/* roulang page: article */
:root {
            --color-brand-600: #1f7c80;
            --color-brand-700: #1d6468;
            --color-brand-800: #1c5054;
            --color-brand-900: #1a4347;
            --color-brand-950: #0d2a2e;
            --color-accent-500: #f08c2e;
            --color-accent-600: #e0751a;
            --color-surface: #f8fafb;
            --color-white: #ffffff;
            --color-text: #1a1f2e;
            --color-text-weak: #6b7280;
            --color-text-muted: #9ca3af;
            --color-border: #e5e7eb;
            --color-border-light: #f0f1f3;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 18px;
            --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.07);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.09);
            --shadow-lg: 0 8px 28px rgba(0, 0, 0, 0.11);
            --shadow-xl: 0 14px 40px rgba(0, 0, 0, 0.13);
            --transition-fast: 160ms ease;
            --transition-base: 240ms ease;
            --transition-slow: 360ms ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-surface);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        /* Header & Navigation */
        .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 var(--color-border-light);
            box-shadow: var(--shadow-xs);
            transition: box-shadow var(--transition-base);
        }

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

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

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--color-brand-600), var(--color-brand-800));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            letter-spacing: -0.5px;
            box-shadow: 0 2px 8px rgba(29, 100, 104, 0.25);
        }

        .logo-text {
            font-weight: 700;
            font-size: 17px;
            color: var(--color-brand-900);
            letter-spacing: -0.3px;
            white-space: nowrap;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-links a {
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 14.5px;
            font-weight: 500;
            color: var(--color-text-weak);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }

        .nav-links a:hover {
            color: var(--color-brand-700);
            background: rgba(31, 124, 128, 0.06);
        }

        .nav-links a.nav-active {
            color: var(--color-brand-700);
            font-weight: 600;
            background: rgba(31, 124, 128, 0.08);
        }

        .nav-cta-btn {
            background: linear-gradient(135deg, var(--color-accent-500), var(--color-accent-600)) !important;
            color: #fff !important;
            font-weight: 600 !important;
            padding: 9px 20px !important;
            border-radius: var(--radius-md) !important;
            box-shadow: 0 2px 10px rgba(240, 140, 46, 0.28);
            transition: all var(--transition-base) !important;
            margin-left: 6px;
        }

        .nav-cta-btn:hover {
            box-shadow: 0 4px 18px rgba(240, 140, 46, 0.4) !important;
            transform: translateY(-1px);
            background: linear-gradient(135deg, #f59838, #e0751a) !important;
            color: #fff !important;
        }

        .nav-cta-btn i {
            margin-right: 5px;
        }

        /* Mobile nav toggle */
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--color-text);
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }

        .nav-toggle:hover {
            background: rgba(0, 0, 0, 0.04);
        }

        /* Main layout */
        .page-main {
            min-height: 60vh;
        }

        /* Breadcrumb */
        .breadcrumb-wrap {
            max-width: 860px;
            margin: 0 auto;
            padding: 20px 24px 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13.5px;
            color: var(--color-text-muted);
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--color-text-weak);
            transition: color var(--transition-fast);
        }

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

        .breadcrumb .sep {
            color: var(--color-text-muted);
            font-size: 11px;
            user-select: none;
        }

        .breadcrumb .current {
            color: var(--color-text);
            font-weight: 500;
        }

        /* Article header */
        .article-header-section {
            max-width: 860px;
            margin: 0 auto;
            padding: 28px 24px 16px;
        }

        .article-category-badge {
            display: inline-block;
            padding: 5px 14px;
            background: rgba(31, 124, 128, 0.08);
            color: var(--color-brand-700);
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.3px;
            margin-bottom: 16px;
        }

        .article-h1 {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-brand-950);
            margin: 0 0 16px;
            letter-spacing: -0.4px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 18px;
            font-size: 14px;
            color: var(--color-text-muted);
            flex-wrap: wrap;
        }

        .article-meta span {
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .article-meta i {
            font-size: 13px;
            color: var(--color-text-muted);
        }

        /* Featured image */
        .article-featured-img {
            max-width: 860px;
            margin: 0 auto;
            padding: 8px 24px 28px;
        }

        .article-featured-img img {
            width: 100%;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            object-fit: cover;
            aspect-ratio: 16 / 9;
        }

        /* Article content */
        .article-content-section {
            max-width: 800px;
            margin: 0 auto;
            padding: 0 24px 40px;
        }

        .article-content {
            font-size: 16.5px;
            line-height: 1.85;
            color: #2d3138;
        }

        .article-content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-brand-950);
            margin: 2em 0 0.7em;
            padding-bottom: 0.4em;
            border-bottom: 2px solid var(--color-border-light);
            letter-spacing: -0.2px;
        }

        .article-content h3 {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--color-brand-900);
            margin: 1.6em 0 0.6em;
        }

        .article-content h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-text);
            margin: 1.3em 0 0.5em;
        }

        .article-content p {
            margin: 0 0 1.1em;
        }

        .article-content ul,
        .article-content ol {
            margin: 0 0 1.3em;
            padding-left: 1.6em;
        }

        .article-content li {
            margin-bottom: 0.45em;
        }

        .article-content blockquote {
            margin: 1.5em 0;
            padding: 18px 24px;
            background: rgba(31, 124, 128, 0.04);
            border-left: 4px solid var(--color-brand-500);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--color-text-weak);
            font-style: italic;
        }

        .article-content img {
            border-radius: var(--radius-md);
            margin: 1.5em auto;
            box-shadow: var(--shadow-sm);
        }

        .article-content a {
            color: var(--color-brand-600);
            text-decoration: underline;
            text-decoration-thickness: 1px;
            text-underline-offset: 3px;
            transition: color var(--transition-fast);
        }

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

        .article-content code {
            background: #f4f5f7;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: #c7254e;
            font-family: "SF Mono", "Fira Code", "Consolas", monospace;
        }

        .article-content pre {
            background: #1e293b;
            color: #e2e8f0;
            padding: 20px 24px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin: 1.5em 0;
            font-size: 14px;
            line-height: 1.6;
        }

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

        .article-content hr {
            border: none;
            border-top: 1px solid var(--color-border-light);
            margin: 2em 0;
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5em 0;
            font-size: 14.5px;
        }

        .article-content th,
        .article-content td {
            padding: 10px 14px;
            border: 1px solid var(--color-border);
            text-align: left;
        }

        .article-content th {
            background: var(--color-surface);
            font-weight: 600;
            color: var(--color-brand-900);
        }

        /* Not found state */
        .not-found-section {
            max-width: 600px;
            margin: 60px auto;
            padding: 50px 24px;
            text-align: center;
        }

        .not-found-icon {
            font-size: 56px;
            color: var(--color-text-muted);
            margin-bottom: 20px;
        }

        .not-found-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-brand-950);
            margin-bottom: 12px;
        }

        .not-found-desc {
            color: var(--color-text-weak);
            margin-bottom: 28px;
            line-height: 1.7;
        }

        .btn-back-home {
            display: inline-block;
            padding: 12px 28px;
            background: var(--color-brand-600);
            color: #fff;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
        }

        .btn-back-home:hover {
            background: var(--color-brand-700);
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
            color: #fff;
        }

        .btn-back-home i {
            margin-right: 7px;
        }

        /* CTA Section */
        .cta-section {
            max-width: 800px;
            margin: 0 auto 50px;
            padding: 36px 32px;
            background: linear-gradient(135deg, var(--color-brand-950), var(--color-brand-800));
            border-radius: var(--radius-xl);
            text-align: center;
            color: #fff;
            box-shadow: var(--shadow-lg);
        }

        .cta-section h3 {
            font-size: 1.35rem;
            font-weight: 700;
            margin: 0 0 10px;
            color: #fff;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.82);
            margin: 0 0 22px;
            font-size: 15px;
            line-height: 1.7;
        }

        .cta-buttons {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .cta-btn-primary {
            display: inline-block;
            padding: 12px 26px;
            background: var(--color-accent-500);
            color: #fff;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition-base);
            box-shadow: 0 3px 14px rgba(240, 140, 46, 0.35);
        }

        .cta-btn-primary:hover {
            background: #f59838;
            box-shadow: 0 5px 20px rgba(240, 140, 46, 0.48);
            transform: translateY(-2px);
            color: #fff;
        }

        .cta-btn-outline {
            display: inline-block;
            padding: 12px 26px;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.45);
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition-base);
        }

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

        .cta-btn-outline i,
        .cta-btn-primary i {
            margin-right: 6px;
        }

        /* Footer */
        .site-footer {
            background: var(--color-brand-950);
            color: rgba(255, 255, 255, 0.78);
            padding: 44px 24px 24px;
            font-size: 14px;
            line-height: 1.7;
        }

        .footer-grid {
            max-width: 1100px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 36px;
        }

        .footer-brand .footer-logo {
            font-weight: 700;
            font-size: 18px;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: -0.3px;
        }

        .footer-brand p {
            margin: 0;
            font-size: 13.5px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-col h4 {
            font-weight: 600;
            font-size: 14px;
            color: #fff;
            margin: 0 0 12px;
            letter-spacing: 0.2px;
        }

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

        .footer-col li {
            margin-bottom: 8px;
        }

        .footer-col a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 13.5px;
            transition: color var(--transition-fast);
        }

        .footer-col a:hover {
            color: #fff;
        }

        .footer-bottom {
            max-width: 1100px;
            margin: 28px auto 0;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            text-align: center;
            font-size: 12.5px;
            color: rgba(255, 255, 255, 0.45);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .header-inner {
                padding: 0 18px;
                height: 60px;
            }

            .nav-links a {
                padding: 7px 12px;
                font-size: 13.5px;
            }

            .nav-cta-btn {
                padding: 8px 16px !important;
                font-size: 13.5px !important;
            }

            .article-h1 {
                font-size: 1.7rem;
            }

            .article-content {
                font-size: 15.5px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 56px;
                padding: 0 14px;
            }

            .logo-text {
                font-size: 15px;
            }

            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 15px;
            }

            .nav-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }

            .nav-links {
                position: fixed;
                top: 56px;
                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;
                padding: 10px 14px 18px;
                gap: 2px;
                border-bottom: 1px solid var(--color-border-light);
                box-shadow: var(--shadow-lg);
                transform: translateY(-110%);
                opacity: 0;
                transition: all var(--transition-base);
                pointer-events: none;
                z-index: 99;
            }

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

            .nav-links a {
                padding: 12px 14px;
                font-size: 15px;
                border-radius: var(--radius-sm);
            }

            .nav-cta-btn {
                margin-left: 0;
                margin-top: 6px;
                text-align: center;
                justify-content: center;
                display: flex;
                align-items: center;
                padding: 12px 16px !important;
                font-size: 15px !important;
            }

            .article-h1 {
                font-size: 1.45rem;
            }

            .article-content {
                font-size: 15px;
                line-height: 1.8;
            }

            .article-content h2 {
                font-size: 1.3rem;
            }

            .article-content h3 {
                font-size: 1.1rem;
            }

            .cta-section {
                margin: 0 14px 40px;
                padding: 28px 20px;
                border-radius: var(--radius-lg);
            }

            .cta-section h3 {
                font-size: 1.2rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 22px;
            }

            .footer-brand p {
                max-width: 100%;
            }

            .breadcrumb-wrap,
            .article-header-section,
            .article-featured-img,
            .article-content-section {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                height: 52px;
                padding: 0 10px;
            }

            .logo-text {
                font-size: 14px;
            }

            .logo-icon {
                width: 28px;
                height: 28px;
                font-size: 13px;
                border-radius: 5px;
            }

            .nav-links {
                top: 52px;
                padding: 8px 10px 14px;
            }

            .nav-links a {
                padding: 10px 12px;
                font-size: 14px;
            }

            .nav-cta-btn {
                padding: 10px 14px !important;
                font-size: 14px !important;
            }

            .article-h1 {
                font-size: 1.3rem;
            }

            .article-meta {
                gap: 10px;
                font-size: 12.5px;
            }

            .article-content {
                font-size: 14.5px;
                line-height: 1.78;
            }

            .article-content h2 {
                font-size: 1.15rem;
            }

            .article-content h3 {
                font-size: 1.02rem;
            }

            .article-content blockquote {
                padding: 14px 16px;
            }

            .article-content pre {
                padding: 14px 16px;
                font-size: 13px;
            }

            .cta-buttons {
                flex-direction: column;
                gap: 10px;
            }

            .cta-btn-primary,
            .cta-btn-outline {
                width: 100%;
                text-align: center;
                justify-content: center;
                display: flex;
                align-items: center;
            }

            .breadcrumb {
                font-size: 12.5px;
            }

            .not-found-section {
                margin: 40px 14px;
                padding: 36px 16px;
            }

            .not-found-icon {
                font-size: 42px;
            }

            .not-found-title {
                font-size: 1.25rem;
            }
        }

/* roulang page: category1 */
/* ========== 设计变量 ========== */
        :root {
            --brand: #1a3c5e;
            --brand-light: #1e5a8a;
            --brand-dark: #0f2a45;
            --accent: #0ea5a0;
            --accent-light: #14b8b0;
            --accent-glow: rgba(14, 165, 160, 0.2);
            --surface: #f8fafc;
            --surface-alt: #f1f5f9;
            --text-primary: #1e293b;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --border-light: #e2e8f0;
            --border-medium: #cbd5e1;
            --success: #10b981;
            --warning: #f59e0b;
            --danger: #ef4444;
            --radius-sm: 0.375rem;
            --radius-md: 0.5rem;
            --radius-lg: 0.75rem;
            --radius-xl: 1rem;
            --radius-2xl: 1.25rem;
            --shadow-card: 0 1px 3px 0 rgba(0,0,0,0.06), 0 1px 2px -1px rgba(0,0,0,0.06);
            --shadow-card-hover: 0 10px 25px -5px rgba(0,0,0,0.1), 0 4px 10px -6px rgba(0,0,0,0.06);
            --shadow-nav: 0 1px 3px 0 rgba(0,0,0,0.04), 0 1px 2px -1px rgba(0,0,0,0.03);
            --shadow-btn: 0 2px 4px rgba(26,60,94,0.18);
            --shadow-btn-hover: 0 6px 16px rgba(26,60,94,0.28);
            --shadow-glow: 0 0 20px rgba(14,165,160,0.15);
            --transition-fast: 150ms ease;
            --transition-base: 250ms ease;
            --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: #ffffff;
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button:focus-visible, input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        ul, ol {
            list-style: none;
        }
        h1, h2, h3, h4, h5, h6 {
            line-height: 1.35;
            font-weight: 700;
            color: var(--text-primary);
        }

        /* ========== 自定义容器 ========== */
        .custom-container {
            width: 100%;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        @media (min-width: 640px) {
            .custom-container {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }
        @media (min-width: 1024px) {
            .custom-container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        /* ========== 导航栏 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-nav);
            transition: box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 12px rgba(0,0,0,0.07);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 1.5rem;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 800;
            font-size: 1.2rem;
            color: var(--brand);
            letter-spacing: -0.01em;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }
        .logo-link:hover {
            color: var(--brand-light);
        }
        .logo-icon {
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, var(--brand) 0%, var(--brand-light) 100%);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }
        .nav-links a {
            padding: 0.5rem 0.9rem;
            border-radius: var(--radius-md);
            font-size: 0.925rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .nav-links a:hover {
            color: var(--brand);
            background: rgba(26, 60, 94, 0.04);
        }
        .nav-links a.nav-active {
            color: var(--brand);
            font-weight: 600;
            background: rgba(26, 60, 94, 0.06);
        }
        .nav-links a.nav-active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
            transition: width var(--transition-fast);
        }
        .nav-links .nav-cta-btn {
            background: linear-gradient(135deg, var(--brand) 0%, var(--brand-light) 100%);
            color: #fff !important;
            font-weight: 600;
            padding: 0.55rem 1.2rem;
            border-radius: 2rem;
            box-shadow: var(--shadow-btn);
            margin-left: 0.5rem;
            transition: all var(--transition-base);
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .nav-links .nav-cta-btn:hover {
            box-shadow: var(--shadow-btn-hover);
            transform: translateY(-1px);
            color: #fff !important;
            background: linear-gradient(135deg, var(--brand-light) 0%, #256ba0 100%);
        }
        .nav-links .nav-cta-btn:active {
            transform: translateY(0);
            box-shadow: var(--shadow-btn);
        }

        /* 移动端菜单 */
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 0.5rem;
            color: var(--text-primary);
            font-size: 1.4rem;
            line-height: 1;
            border-radius: var(--radius-md);
            transition: background var(--transition-fast);
        }
        .mobile-toggle:hover {
            background: rgba(26, 60, 94, 0.06);
        }
        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: 0.75rem 1rem;
                gap: 0.3rem;
                border-bottom: 1px solid var(--border-light);
                box-shadow: 0 8px 20px rgba(0,0,0,0.08);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: all var(--transition-slow);
                z-index: 49;
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-links a {
                padding: 0.7rem 1rem;
                border-radius: var(--radius-md);
                font-size: 0.95rem;
            }
            .nav-links .nav-cta-btn {
                margin-left: 0;
                justify-content: center;
                margin-top: 0.25rem;
            }
            .nav-links a.nav-active::after {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
        }

        /* ========== 板块通用间距 ========== */
        .section-padding {
            padding-top: 3.5rem;
            padding-bottom: 3.5rem;
        }
        @media (min-width: 768px) {
            .section-padding {
                padding-top: 5rem;
                padding-bottom: 5rem;
            }
        }

        /* ========== Hero 板块 ========== */
        .hero-category {
            position: relative;
            background: linear-gradient(160deg, var(--brand-dark) 0%, var(--brand) 35%, #1a4d6e 70%, var(--brand-dark) 100%);
            overflow: hidden;
            min-height: 460px;
            display: flex;
            align-items: center;
        }
        .hero-category .hero-bg-img {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            z-index: 0;
            mix-blend-mode: overlay;
        }
        .hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(14,165,160,0.12) 0%, transparent 60%);
            z-index: 1;
        }
        .hero-category .hero-pattern {
            position: absolute;
            inset: 0;
            background-image: 
                radial-gradient(circle at 20% 30%, rgba(255,255,255,0.03) 1px, transparent 1px),
                radial-gradient(circle at 75% 60%, rgba(255,255,255,0.04) 1px, transparent 1px);
            background-size: 60px 60px, 80px 80px;
            z-index: 1;
        }
        .hero-category .hero-content-wrap {
            position: relative;
            z-index: 2;
            width: 100%;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: rgba(255,255,255,0.12);
            border: 1px solid rgba(255,255,255,0.2);
            color: #e2f5f4;
            padding: 0.35rem 0.9rem;
            border-radius: 2rem;
            font-size: 0.8rem;
            font-weight: 500;
            letter-spacing: 0.02em;
            backdrop-filter: blur(4px);
            margin-bottom: 1.25rem;
        }
        .hero-badge i {
            color: var(--accent-light);
            font-size: 0.7rem;
        }
        .hero-category h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 1rem;
        }
        .hero-category .hero-subtitle {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.82);
            max-width: 560px;
            line-height: 1.65;
            margin-bottom: 1.75rem;
        }
        .hero-category .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
        }
        .btn-primary-hero {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            padding: 0.7rem 1.6rem;
            border-radius: 2rem;
            font-size: 0.95rem;
            transition: all var(--transition-base);
            box-shadow: 0 2px 10px rgba(14,165,160,0.35);
            border: none;
            cursor: pointer;
            letter-spacing: 0.01em;
        }
        .btn-primary-hero:hover {
            background: var(--accent-light);
            box-shadow: 0 6px 20px rgba(14,165,160,0.45);
            transform: translateY(-2px);
        }
        .btn-primary-hero:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(14,165,160,0.3);
        }
        .btn-outline-hero {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: transparent;
            color: #fff;
            font-weight: 500;
            padding: 0.7rem 1.6rem;
            border-radius: 2rem;
            font-size: 0.95rem;
            border: 1.5px solid rgba(255,255,255,0.4);
            transition: all var(--transition-base);
            cursor: pointer;
        }
        .btn-outline-hero:hover {
            border-color: rgba(255,255,255,0.75);
            background: rgba(255,255,255,0.08);
            transform: translateY(-1px);
        }
        .hero-kpi-row {
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,255,255,0.12);
        }
        .hero-kpi-item .kpi-num {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.01em;
        }
        .hero-kpi-item .kpi-label {
            font-size: 0.8rem;
            color: rgba(255,255,255,0.6);
            margin-top: 0.2rem;
            letter-spacing: 0.02em;
        }
        @media (max-width: 768px) {
            .hero-category {
                min-height: 400px;
            }
            .hero-category h1 {
                font-size: 1.75rem;
            }
            .hero-category .hero-subtitle {
                font-size: 0.95rem;
            }
            .hero-kpi-row {
                gap: 1.25rem;
            }
            .hero-kpi-item .kpi-num {
                font-size: 1.4rem;
            }
        }

        /* ========== 板块标题 ========== */
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 0.5rem;
            background: rgba(14,165,160,0.08);
            padding: 0.25rem 0.75rem;
            border-radius: 2rem;
        }
        .section-heading {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            margin-bottom: 0.75rem;
        }
        .section-subheading {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin-bottom: 2.5rem;
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .section-heading {
                font-size: 1.5rem;
            }
        }

        /* ========== 优势卡片 ========== */
        .advantage-card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-xl);
            padding: 1.75rem 1.5rem;
            transition: all var(--transition-slow);
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .advantage-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--accent) 0%, var(--brand-light) 100%);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--transition-slow);
        }
        .advantage-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: var(--border-medium);
        }
        .advantage-card:hover::before {
            transform: scaleX(1);
        }
        .advantage-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-lg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 1rem;
            flex-shrink: 0;
        }
        .advantage-icon.blue {
            background: rgba(26,60,94,0.08);
            color: var(--brand);
        }
        .advantage-icon.teal {
            background: rgba(14,165,160,0.1);
            color: var(--accent);
        }
        .advantage-icon.green {
            background: rgba(16,185,129,0.1);
            color: var(--success);
        }
        .advantage-icon.amber {
            background: rgba(245,158,11,0.1);
            color: var(--warning);
        }
        .advantage-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            color: var(--text-primary);
        }
        .advantage-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ========== 流程步骤 ========== */
        .step-connector {
            position: relative;
        }
        .step-item {
            display: flex;
            gap: 1.25rem;
            align-items: flex-start;
            position: relative;
        }
        .step-number {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--brand) 0%, var(--brand-light) 100%);
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            box-shadow: 0 2px 8px rgba(26,60,94,0.2);
            position: relative;
            z-index: 1;
        }
        .step-content h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 0.3rem;
            color: var(--text-primary);
        }
        .step-content p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.55;
        }
        @media (max-width: 640px) {
            .step-item {
                gap: 0.9rem;
            }
            .step-number {
                width: 36px;
                height: 36px;
                font-size: 0.95rem;
            }
        }

        /* ========== 安全特性区块 ========== */
        .security-feature-block {
            background: var(--surface);
            border-radius: var(--radius-2xl);
            padding: 2rem;
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }
        .security-feature-block:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--border-medium);
        }

        /* ========== FAQ ========== */
        .faq-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            margin-bottom: 0.6rem;
            overflow: hidden;
            background: #fff;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--border-medium);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            text-align: left;
            padding: 1.1rem 1.25rem;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            transition: color var(--transition-fast);
            line-height: 1.5;
        }
        .faq-question:hover {
            color: var(--brand);
        }
        .faq-question .faq-icon {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
            color: var(--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: 300px;
        }
        .faq-answer-inner {
            padding: 0 1.25rem 1.1rem 1.25rem;
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* ========== CTA 板块 ========== */
        .cta-section {
            background: linear-gradient(160deg, var(--brand-dark) 0%, var(--brand) 50%, #1a4d6e 100%);
            border-radius: var(--radius-2xl);
            padding: 3rem 2rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(14,165,160,0.15) 0%, transparent 65%);
        }
        .cta-section .cta-content {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 0.75rem;
        }
        .cta-section p {
            color: rgba(255,255,255,0.78);
            font-size: 1rem;
            max-width: 480px;
            margin: 0 auto 1.5rem;
            line-height: 1.6;
        }
        .cta-section .btn-cta-large {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: #fff;
            color: var(--brand);
            font-weight: 700;
            padding: 0.8rem 2rem;
            border-radius: 2rem;
            font-size: 1rem;
            transition: all var(--transition-base);
            box-shadow: 0 4px 16px rgba(0,0,0,0.18);
            border: none;
            cursor: pointer;
        }
        .cta-section .btn-cta-large:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0,0,0,0.25);
            background: #f0fdfa;
        }
        @media (max-width: 640px) {
            .cta-section {
                padding: 2rem 1.25rem;
                border-radius: var(--radius-xl);
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #0f1e2e;
            color: rgba(255,255,255,0.72);
            padding: 3rem 0 1.5rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2rem;
        }
        .footer-logo {
            font-weight: 800;
            font-size: 1.15rem;
            color: #fff;
            margin-bottom: 0.75rem;
            letter-spacing: -0.01em;
        }
        .footer-brand p {
            font-size: 0.85rem;
            line-height: 1.6;
            color: rgba(255,255,255,0.55);
        }
        .footer-col h4 {
            font-size: 0.85rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.75rem;
            letter-spacing: 0.03em;
        }
        .footer-col ul li {
            margin-bottom: 0.4rem;
        }
        .footer-col ul li a {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.55);
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--accent-light);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 1.25rem;
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255,255,255,0.4);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.25rem;
            }
        }

        /* ========== 通用按钮 ========== */
        .btn-outline-brand {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: transparent;
            color: var(--brand);
            font-weight: 600;
            padding: 0.55rem 1.3rem;
            border-radius: 2rem;
            font-size: 0.9rem;
            border: 1.5px solid var(--brand);
            transition: all var(--transition-fast);
            cursor: pointer;
        }
        .btn-outline-brand:hover {
            background: var(--brand);
            color: #fff;
            box-shadow: var(--shadow-btn);
        }
        .btn-solid-brand {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: var(--brand);
            color: #fff;
            font-weight: 600;
            padding: 0.55rem 1.3rem;
            border-radius: 2rem;
            font-size: 0.9rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-btn);
        }
        .btn-solid-brand:hover {
            background: var(--brand-light);
            box-shadow: var(--shadow-btn-hover);
            transform: translateY(-1px);
        }

        /* ========== 图片装饰 ========== */
        .img-rounded-card {
            border-radius: var(--radius-xl);
            object-fit: cover;
            width: 100%;
            box-shadow: var(--shadow-card);
        }
        .img-glow-border {
            border-radius: var(--radius-xl);
            border: 2px solid var(--border-light);
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .img-glow-border:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow-glow);
        }

        /* ========== 滚动动画辅助 ========== */
        .fade-in-up {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-in-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ========== 区块背景变体 ========== */
        .bg-surface-section {
            background: var(--surface);
        }

        /* 选中文本 */
        ::selection {
            background: rgba(14,165,160,0.22);
            color: var(--text-primary);
        }

/* roulang page: category2 */
:root {
            --color-primary: #1e7050;
            --color-primary-dark: #164836;
            --color-primary-light: #4da87d;
            --color-accent: #476084;
            --color-accent-light: #7c95b7;
            --color-bg: #f8faf9;
            --color-surface: #ffffff;
            --color-text: #1a1f1c;
            --color-text-secondary: #5a6b62;
            --color-text-muted: #8a9b92;
            --color-border: #dde5e0;
            --color-border-light: #eef3f0;
            --color-success: #2d8f62;
            --color-warning: #d4a017;
            --color-danger: #c0392b;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-xs: 0 1px 2px rgba(10, 33, 25, 0.04);
            --shadow-sm: 0 2px 8px rgba(10, 33, 25, 0.06);
            --shadow-md: 0 6px 20px rgba(10, 33, 25, 0.08);
            --shadow-lg: 0 12px 36px rgba(10, 33, 25, 0.10);
            --shadow-xl: 0 20px 50px rgba(10, 33, 25, 0.12);
            --transition-fast: 160ms ease;
            --transition-base: 240ms ease;
            --transition-slow: 360ms ease;
        }

        *,
        *::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', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', 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;
            transition: color var(--transition-fast);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

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

        /* 导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
            transition: box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .header-logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-primary-dark);
            letter-spacing: -0.01em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .header-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.9375rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .nav-links a:hover {
            color: var(--color-primary);
            background: var(--color-border-light);
        }
        .nav-links a.nav-active {
            color: var(--color-primary-dark);
            font-weight: 600;
            background: #e8f4ee;
        }
        .nav-cta-btn {
            background: var(--color-primary) !important;
            color: #fff !important;
            font-weight: 600 !important;
            padding: 9px 20px !important;
            border-radius: var(--radius-sm) !important;
            box-shadow: 0 2px 8px rgba(30, 112, 80, 0.25);
            transition: all var(--transition-fast) !important;
            gap: 6px;
        }
        .nav-cta-btn:hover {
            background: var(--color-primary-dark) !important;
            box-shadow: 0 4px 14px rgba(30, 112, 80, 0.35) !important;
            transform: translateY(-1px);
            color: #fff !important;
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--color-text);
            cursor: pointer;
            padding: 6px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }
        .mobile-menu-toggle:hover {
            background: var(--color-border-light);
        }
        @media (max-width: 900px) {
            .mobile-menu-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 16px 24px;
                gap: 2px;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-lg);
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 1rem;
            }
            .nav-cta-btn {
                justify-content: center;
                margin-top: 4px;
            }
            .header-inner {
                height: 56px;
                padding: 0 16px;
            }
        }

        /* Hero */
        .page-hero {
            position: relative;
            background: linear-gradient(160deg, #0a2119 0%, #123b2d 30%, #164836 60%, #1a5a42 100%);
            padding: 72px 0 64px;
            overflow: hidden;
            color: #fff;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.18;
            z-index: 0;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--color-bg), transparent);
            z-index: 1;
        }
        .page-hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            margin: 0 auto;
            text-align: center;
        }
        .page-hero .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #b3dcc7;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.02em;
            margin-bottom: 20px;
            backdrop-filter: blur(4px);
        }
        .page-hero h1 {
            font-size: 2.75rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin: 0 0 16px;
            color: #fff;
        }
        .page-hero .hero-subtitle {
            font-size: 1.15rem;
            color: #c8dfd3;
            line-height: 1.7;
            max-width: 640px;
            margin: 0 auto 32px;
        }
        .page-hero .hero-actions {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            color: var(--color-primary-dark);
            font-weight: 700;
            padding: 14px 28px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.25);
            transition: all var(--transition-base);
            cursor: pointer;
            border: none;
        }
        .btn-hero-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 32px rgba(0, 0, 0, 0.35);
            background: #f0f7f4;
        }
        .btn-hero-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            padding: 14px 28px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            border: 2px solid rgba(255, 255, 255, 0.4);
            transition: all var(--transition-base);
            cursor: pointer;
        }
        .btn-hero-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        @media (max-width: 768px) {
            .page-hero {
                padding: 48px 0 40px;
            }
            .page-hero h1 {
                font-size: 1.9rem;
            }
            .page-hero .hero-subtitle {
                font-size: 1rem;
            }
            .btn-hero-primary,
            .btn-hero-outline {
                padding: 12px 22px;
                font-size: 0.9375rem;
            }
        }

        /* 板块通用 */
        .section-block {
            padding: 64px 0;
        }
        .section-block-alt {
            padding: 64px 0;
            background: #fff;
            border-top: 1px solid var(--color-border-light);
            border-bottom: 1px solid var(--color-border-light);
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--color-primary);
            background: #e8f4ee;
            padding: 5px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
        }
        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 8px;
            letter-spacing: -0.01em;
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--color-text-secondary);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .section-block,
            .section-block-alt {
                padding: 40px 0;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .section-header {
                margin-bottom: 32px;
            }
        }

        /* 流程步骤 */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }
        .steps-grid::before {
            content: '';
            position: absolute;
            top: 44px;
            left: 12%;
            right: 12%;
            height: 2px;
            background: linear-gradient(to right, var(--color-border), var(--color-primary-light), var(--color-border));
            z-index: 0;
            border-radius: 2px;
        }
        .step-card {
            position: relative;
            z-index: 1;
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 20px 24px;
            text-align: center;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }
        .step-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--color-border);
        }
        .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            color: #fff;
            font-weight: 700;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 4px 14px rgba(30, 112, 80, 0.3);
        }
        .step-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 8px;
        }
        .step-card p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            margin: 0;
            line-height: 1.6;
        }
        @media (max-width: 900px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid::before {
                display: none;
            }
        }
        @media (max-width: 520px) {
            .steps-grid {
                grid-template-columns: 1fr;
            }
        }

        /* 安全特性卡片 */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .feature-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-md);
            border-color: #c8dfd3;
            transform: translateY(-2px);
        }
        .feature-icon-wrap {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            background: #e8f4ee;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-primary-dark);
            font-size: 1.4rem;
            flex-shrink: 0;
        }
        .feature-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text);
            margin: 0;
        }
        .feature-card p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            margin: 0;
            line-height: 1.65;
        }
        @media (max-width: 768px) {
            .features-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 520px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
        }

        /* 安全数据KPI */
        .kpi-row {
            display: flex;
            justify-content: center;
            gap: 40px;
            flex-wrap: wrap;
            text-align: center;
        }
        .kpi-item {
            min-width: 140px;
        }
        .kpi-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--color-primary-dark);
            letter-spacing: -0.02em;
            line-height: 1.1;
        }
        .kpi-label {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            margin-top: 4px;
        }
        @media (max-width: 520px) {
            .kpi-row {
                gap: 24px;
            }
            .kpi-number {
                font-size: 2rem;
            }
        }

        /* 场景卡片 */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .scenario-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .scenario-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .scenario-card-img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }
        .scenario-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .scenario-card:hover .scenario-card-img img {
            transform: scale(1.04);
        }
        .scenario-card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .scenario-card-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-text);
            margin: 0;
        }
        .scenario-card-body p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            margin: 0;
            line-height: 1.6;
        }
        @media (max-width: 600px) {
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .scenario-card-img {
                height: 160px;
            }
        }

        /* FAQ */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-xs);
        }
        .faq-item:hover {
            border-color: var(--color-border);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 22px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            text-align: left;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: color var(--transition-fast);
            line-height: 1.5;
        }
        .faq-question:hover {
            color: var(--color-primary-dark);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-border-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            transition: all var(--transition-fast);
            color: var(--color-text-muted);
        }
        .faq-item.open .faq-question .faq-icon {
            background: var(--color-primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base), padding var(--transition-base);
            padding: 0 22px;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 22px 18px;
        }
        .faq-answer p {
            margin: 0;
            font-size: 0.925rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(160deg, #0a2119, #164836);
            color: #fff;
            text-align: center;
            padding: 72px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.1;
            z-index: 0;
        }
        .cta-section .cta-inner {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin: 0 0 12px;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: #c8dfd3;
            max-width: 550px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .btn-cta-lg {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            color: var(--color-primary-dark);
            font-weight: 700;
            padding: 15px 32px;
            border-radius: var(--radius-sm);
            font-size: 1.05rem;
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.3);
            transition: all var(--transition-base);
            cursor: pointer;
            border: none;
        }
        .btn-cta-lg:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.4);
            background: #f0f7f4;
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 48px 0;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
        }

        /* 页脚 */
        .site-footer {
            background: #0a1a13;
            color: #b3c8bc;
            padding: 48px 0 24px;
            font-size: 0.9rem;
        }
        .footer-grid {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 40px;
        }
        .footer-logo {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .footer-brand p {
            color: #8aa898;
            line-height: 1.7;
            margin: 0;
            max-width: 340px;
        }
        .footer-col h4 {
            color: #dde8e2;
            font-weight: 600;
            margin: 0 0 12px;
            font-size: 0.95rem;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 7px;
        }
        .footer-col ul li a {
            color: #8aa898;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: #dde8e2;
        }
        .footer-bottom {
            max-width: 1200px;
            margin: 32px auto 0;
            padding: 20px 24px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            text-align: center;
            color: #6b8576;
            font-size: 0.85rem;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }