/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #F97316;
            --color-primary-dark: #C2570E;
            --color-secondary: #0F172A;
            --color-accent: #10B981;
            --color-bg: #FAFAF9;
            --color-bg-alt: #F1F0ED;
            --color-bg-dark: #0B1220;
            --color-text-primary: #1C1917;
            --color-text-secondary: #57534E;
            --color-border: rgba(17, 24, 39, 0.08);
            --color-primary-soft: rgba(249, 115, 22, 0.1);
            --shadow-card: 0 1px 2px rgba(15, 23, 42, 0.04), 0 4px 12px rgba(15, 23, 42, 0.04);
            --shadow-card-hover: 0 8px 30px rgba(249, 115, 22, 0.12);
            --radius-card: 12px;
            --radius-btn: 8px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            background: var(--color-bg);
            color: var(--color-text-primary);
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", system-ui, sans-serif;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        a:hover {
            color: var(--color-primary);
        }

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

        ::selection {
            background: var(--color-primary-soft);
            color: var(--color-text-primary);
        }

        section {
            scroll-margin-top: 100px;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 板块间距 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--color-bg-alt);
        }
        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
        }

        /* ===== 按钮 ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--color-primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 10px 20px;
            font-weight: 500;
            font-size: 0.95rem;
            transition: all 0.3s ease;
            box-shadow: 0 2px 8px rgba(249, 115, 22, 0.25);
        }
        .btn-primary:hover {
            background: var(--color-primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(249, 115, 22, 0.35);
        }
        .btn-primary:active {
            transform: scale(0.98);
        }
        .btn-primary:focus-visible {
            outline: none;
            box-shadow: 0 0 0 4px rgba(249, 115, 22, 0.25);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: var(--color-text-primary);
            border: 1px solid rgba(15, 23, 42, 0.2);
            border-radius: var(--radius-btn);
            padding: 10px 20px;
            font-weight: 500;
            font-size: 0.95rem;
            transition: all 0.3s ease;
        }
        .btn-outline:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: var(--color-primary-soft);
        }
        .btn-outline:active {
            transform: scale(0.98);
        }
        .btn-outline:focus-visible {
            outline: none;
            box-shadow: 0 0 0 4px rgba(249, 115, 22, 0.15);
        }

        .btn-dark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-btn);
            padding: 10px 20px;
            font-weight: 500;
            font-size: 0.95rem;
            transition: all 0.3s ease;
        }
        .btn-dark:hover {
            background: rgba(255, 255, 255, 0.2);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.3);
        }

        /* ===== 徽章 ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            background: var(--color-primary-soft);
            color: var(--color-primary-dark);
            border-radius: 999px;
            padding: 4px 16px;
            font-weight: 500;
            font-size: 0.875rem;
            transition: all 0.3s ease;
        }
        .badge-accent {
            background: var(--color-accent-soft, rgba(16, 185, 129, 0.1));
            color: #047857;
        }

        /* ===== 标签 Chip ===== */
        .chip {
            display: inline-flex;
            align-items: center;
            border: 1px solid rgba(15, 23, 42, 0.1);
            border-radius: 999px;
            padding: 4px 16px;
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all 0.3s ease;
        }
        .chip:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: var(--color-primary-soft);
        }
        .chip-active {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }
        .chip-active:hover {
            background: var(--color-primary-dark);
            color: #fff;
        }

        /* ===== 卡片 ===== */
        .card {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
        }
        .card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(249, 115, 22, 0.3);
            transform: translateY(-4px);
        }

        .card-dark {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 16px;
            transition: all 0.3s ease;
        }
        .card-dark:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(249, 115, 22, 0.5);
        }

        /* ===== 浮动导航 ===== */
        .nav-dock {
            position: fixed;
            top: 16px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1000;
            width: calc(100% - 32px);
            max-width: 900px;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-radius: 999px;
            border: 1px solid rgba(15, 23, 42, 0.08);
            box-shadow: 0 4px 20px rgba(15, 23, 42, 0.08);
            padding: 6px 8px 6px 16px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            transition: box-shadow 0.3s ease;
        }
        .nav-dock:hover {
            box-shadow: 0 8px 30px rgba(15, 23, 42, 0.12);
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 6px 12px;
            border-radius: 999px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all 0.3s ease;
            position: relative;
        }
        .nav-link:hover {
            color: var(--color-primary);
            background: var(--color-primary-soft);
        }
        .nav-link.active {
            color: var(--color-primary);
            font-weight: 600;
            background: var(--color-primary-soft);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--color-primary);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            background: var(--color-primary);
            color: #fff;
            border-radius: 999px;
            padding: 7px 20px;
            font-size: 0.875rem;
            font-weight: 500;
            transition: all 0.3s ease;
            box-shadow: 0 2px 8px rgba(249, 115, 22, 0.3);
        }
        .nav-cta:hover {
            background: var(--color-primary-dark);
            color: #fff;
            transform: translateY(-1px);
        }

        @media (max-width: 768px) {
            .nav-dock {
                border-radius: 24px;
                padding: 8px 12px;
                flex-wrap: wrap;
            }
            .nav-links {
                display: none !important;
            }
            .nav-cta {
                display: none !important;
            }
            .nav-mobile-toggle {
                display: flex !important;
            }
            .nav-mobile-menu.show {
                display: flex !important;
            }
        }

        .nav-mobile-toggle {
            display: none;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--color-bg-alt);
            border: none;
            color: var(--color-text-primary);
            font-size: 1.25rem;
            transition: all 0.3s ease;
        }
        .nav-mobile-toggle:hover {
            background: var(--color-primary-soft);
            color: var(--color-primary);
        }

        .nav-mobile-menu {
            display: none;
            flex-direction: column;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(20px);
            border-radius: 24px;
            border: 1px solid rgba(15, 23, 42, 0.08);
            box-shadow: 0 20px 60px rgba(15, 23, 42, 0.15);
            padding: 16px;
            margin-top: 8px;
            gap: 4px;
        }
        .nav-mobile-menu a {
            padding: 12px 16px;
            border-radius: 12px;
            font-size: 1.05rem;
            font-weight: 500;
            color: var(--color-text-primary);
            transition: all 0.3s ease;
        }
        .nav-mobile-menu a:hover {
            background: var(--color-primary-soft);
            color: var(--color-primary);
        }
        .nav-mobile-menu a.active {
            background: var(--color-primary-soft);
            color: var(--color-primary);
            font-weight: 600;
        }
        .nav-mobile-menu .btn-primary {
            margin-top: 8px;
            width: 100%;
            text-align: center;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(250, 250, 249, 0.82) 0%, rgba(250, 250, 249, 0.92) 50%, rgba(255, 237, 213, 0.85) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 10;
            text-align: center;
            padding: 140px 24px 80px;
            max-width: 860px;
            margin: 0 auto;
        }
        .hero h1 {
            font-size: clamp(2rem, 5vw, 3rem);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            color: var(--color-secondary);
            margin: 20px 0 16px;
        }
        .hero-subtitle {
            font-size: 1.125rem;
            line-height: 1.875;
            color: var(--color-text-secondary);
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .hero-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .hero-metrics {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            max-width: 480px;
            margin: 48px auto 0;
        }
        .hero-metric {
            padding: 16px 8px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.7);
            border: 1px solid rgba(255, 255, 255, 0.9);
            box-shadow: 0 2px 12px rgba(15, 23, 42, 0.06);
        }
        .hero-metric .number {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1.2;
        }
        .hero-metric .label {
            font-size: 0.875rem;
            color: var(--color-text-secondary);
            margin-top: 4px;
        }

        .hero-preview {
            position: relative;
            z-index: 10;
            max-width: 720px;
            margin: 56px auto 0;
            background: #fff;
            border-radius: 16px;
            box-shadow: 0 20px 60px rgba(15, 23, 42, 0.12);
            border: 1px solid rgba(15, 23, 42, 0.06);
            overflow: hidden;
            text-align: left;
        }
        .hero-preview .window-bar {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 12px 16px;
            background: var(--color-bg-alt);
            border-bottom: 1px solid rgba(15, 23, 42, 0.05);
        }
        .hero-preview .window-bar span {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            display: inline-block;
        }
        .hero-preview .window-bar .dot-r { background: #f87171; }
        .hero-preview .window-bar .dot-y { background: #fbbf24; }
        .hero-preview .window-bar .dot-g { background: #34d399; }

        @media (max-width: 640px) {
            .hero-metrics {
                grid-template-columns: repeat(3, 1fr);
                gap: 12px;
            }
            .hero-metric .number {
                font-size: 1.125rem;
            }
            .hero-metric .label {
                font-size: 0.75rem;
            }
        }

        /* ===== 功能分组 ===== */
        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--color-primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            transition: all 0.3s ease;
        }
        .card:hover .feature-icon {
            background: var(--color-primary);
            color: #fff;
            transform: scale(1.05);
        }
        .feature-icon svg {
            width: 24px;
            height: 24px;
            color: var(--color-primary);
            transition: color 0.3s ease;
        }
        .card:hover .feature-icon svg {
            color: #fff;
        }

        .feature-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-primary);
            margin-top: 12px;
            transition: gap 0.3s ease;
        }
        .feature-link:hover {
            gap: 8px;
        }

        /* ===== 场景 ===== */
        .scenario-item {
            display: flex;
            gap: 20px;
            padding: 20px 16px;
            border-radius: 12px;
            transition: all 0.3s ease;
            border-left: 3px solid transparent;
        }
        .scenario-item:hover {
            background: rgba(255, 255, 255, 0.8);
            border-left-color: var(--color-primary);
            box-shadow: var(--shadow-card);
        }
        .scenario-num {
            font-size: 1.5rem;
            font-weight: 800;
            color: rgba(249, 115, 22, 0.4);
            line-height: 1;
            min-width: 40px;
            transition: color 0.3s ease;
        }
        .scenario-item:hover .scenario-num {
            color: var(--color-primary);
        }
        .scenario-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--color-secondary);
            margin-bottom: 4px;
        }
        .scenario-desc {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ===== 案例 ===== */
        .case-card {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
        }
        .case-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: rgba(249, 115, 22, 0.25);
        }
        .case-card .img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/9;
        }
        .case-card .img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .case-card:hover .img-wrap img {
            transform: scale(1.03);
        }
        .case-content {
            padding: 20px;
        }
        .case-meta {
            display: flex;
            gap: 12px;
            margin-top: 16px;
            padding-top: 16px;
            border-top: 1px solid rgba(15, 23, 42, 0.06);
        }
        .case-meta-item {
            flex: 1;
            text-align: center;
        }
        .case-meta-item .value {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--color-primary);
        }
        .case-meta-item .key {
            font-size: 0.8rem;
            color: var(--color-text-secondary);
        }

        /* ===== 资讯 ===== */
        .news-list {
            list-style: none;
            padding: 0;
        }
        .news-list li {
            padding: 14px 0;
            border-bottom: 1px solid rgba(15, 23, 42, 0.05);
            transition: all 0.3s ease;
        }
        .news-list li:last-child {
            border-bottom: none;
        }
        .news-list a {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            font-size: 0.95rem;
            color: var(--color-text-primary);
            font-weight: 500;
            transition: color 0.3s ease;
        }
        .news-list a:hover {
            color: var(--color-primary);
        }
        .news-list .date {
            font-size: 0.8rem;
            color: var(--color-text-secondary);
            white-space: nowrap;
            font-weight: 400;
        }

        /* ===== 价格 ===== */
        .pricing-card {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: 16px;
            padding: 32px 24px;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            position: relative;
        }
        .pricing-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .pricing-card.featured {
            border: 2px solid var(--color-primary);
            box-shadow: 0 8px 30px rgba(249, 115, 22, 0.15);
        }
        .pricing-card.featured .badge-hot {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--color-primary);
            color: #fff;
            border-radius: 999px;
            padding: 4px 16px;
            font-size: 0.8rem;
            font-weight: 600;
            white-space: nowrap;
            box-shadow: 0 2px 8px rgba(249, 115, 22, 0.4);
        }
        .price-value {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--color-secondary);
            line-height: 1.2;
        }
        .price-period {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
        }
        .price-list {
            list-style: none;
            padding: 0;
            margin: 20px 0 24px;
        }
        .price-list li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            padding: 6px 0;
            font-size: 0.9rem;
            color: var(--color-text-primary);
            line-height: 1.5;
        }
        .price-list li::before {
            content: '✓';
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: var(--color-accent-soft, rgba(16, 185, 129, 0.1));
            color: #047857;
            font-size: 0.7rem;
            font-weight: 700;
            flex-shrink: 0;
            margin-top: 2px;
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: 12px;
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .faq-item:hover {
            border-color: rgba(249, 115, 22, 0.3);
        }
        .faq-item summary {
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-secondary);
            cursor: pointer;
            transition: color 0.3s ease;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary .icon {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--color-primary-soft);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            flex-shrink: 0;
            transition: all 0.3s ease;
        }
        .faq-item[open] summary .icon {
            background: var(--color-primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-item .faq-answer {
            padding: 0 24px 20px;
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            line-height: 1.75;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--color-bg-dark);
            border-radius: 24px;
            padding: 64px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: 50%;
            transform: translateX(-50%);
            width: 80%;
            height: 80%;
            background: radial-gradient(ellipse, rgba(249, 115, 22, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-section h2 {
            color: #fff;
            font-size: clamp(1.5rem, 3vw, 2.25rem);
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 1rem;
            max-width: 480px;
            margin: 0 auto 32px;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--color-bg-dark);
            color: rgba(255, 255, 255, 0.6);
            padding: 64px 0 24px;
        }
        .footer h4 {
            color: rgba(255, 255, 255, 0.9);
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9rem;
            display: block;
            padding: 4px 0;
            transition: color 0.3s ease;
        }
        .footer a:hover {
            color: var(--color-primary);
        }
        .footer-brand {
            color: #fff;
            font-size: 1.5rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-brand svg {
            color: var(--color-primary);
        }
        .footer-desc {
            font-size: 0.9rem;
            line-height: 1.7;
            margin: 12px 0 20px;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-subscribe {
            display: flex;
            gap: 8px;
            margin-top: 12px;
        }
        .footer-subscribe input {
            flex: 1;
            height: 44px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            padding: 0 16px;
            font-size: 0.9rem;
            outline: none;
            transition: all 0.3s ease;
        }
        .footer-subscribe input::placeholder {
            color: rgba(255, 255, 255, 0.35);
        }
        .footer-subscribe input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 4px rgba(249, 115, 22, 0.15);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            margin-top: 48px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.35);
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--color-text-secondary);
        }
        .breadcrumb a {
            transition: color 0.3s ease;
        }
        .breadcrumb a:hover {
            color: var(--color-primary);
        }
        .breadcrumb .current {
            color: var(--color-primary);
        }

        /* ===== 标题样式 ===== */
        .section-title {
            font-size: clamp(1.5rem, 3vw, 2.25rem);
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-secondary);
            margin-bottom: 12px;
        }
        .section-title .highlight {
            color: var(--color-primary);
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
            max-width: 640px;
            margin-bottom: 48px;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== 网格辅助 ===== */
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        @media (max-width: 1024px) {
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .grid-3, .grid-2 {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 图文块 ===== */
        .split-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        @media (max-width: 768px) {
            .split-section {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        .split-image {
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(15, 23, 42, 0.1);
        }
        .split-image img {
            height: 100%;
            object-fit: cover;
            min-height: 300px;
        }

        /* ===== 数据保障条 ===== */
        .trust-bar {
            display: flex;
            justify-content: center;
            gap: 40px;
            padding: 24px 0;
            flex-wrap: wrap;
        }
        .trust-item {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.9rem;
            color: var(--color-text-secondary);
        }
        .trust-item svg {
            color: var(--color-accent);
            flex-shrink: 0;
        }

        /* ===== 滚动条 ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--color-bg-alt);
        }
        ::-webkit-scrollbar-thumb {
            background: rgba(15, 23, 42, 0.2);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: rgba(249, 115, 22, 0.4);
        }

/* roulang page: category1 */
:root {
            --color-primary: #F97316;
            --color-primary-dark: #C2570E;
            --color-secondary: #0F172A;
            --color-accent: #10B981;
            --color-bg: #FAFAF9;
            --color-bg-alt: #F1F0ED;
            --color-bg-dark: #0B1220;
            --color-text-primary: #1C1917;
            --color-text-secondary: #57534E;
            --color-border: rgba(17, 24, 39, 0.08);
            --color-primary-soft: rgba(249, 115, 22, 0.1);
            --color-accent-soft: rgba(16, 185, 129, 0.1);
            --shadow-card: 0 1px 2px rgba(15, 23, 42, 0.04), 0 4px 12px rgba(15, 23, 42, 0.04);
            --shadow-card-hover: 0 8px 30px rgba(249, 115, 22, 0.12);
            --radius-card: 12px;
            --radius-btn: 8px;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            background: var(--color-bg);
            color: var(--color-text-primary);
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", system-ui, sans-serif;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        a:hover {
            color: var(--color-primary);
        }

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

        section {
            scroll-margin-top: 100px;
        }

        ::selection {
            background: var(--color-primary-soft);
            color: var(--color-text-primary);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        .section {
            padding: 80px 0;
        }

        .section-alt {
            background: var(--color-bg-alt);
        }

        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
        }

        /* ===== 按钮 ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--color-primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 10px 20px;
            font-weight: 500;
            font-size: 0.95rem;
            transition: all 0.3s ease;
            box-shadow: 0 2px 8px rgba(249, 115, 22, 0.25);
        }

        .btn-primary:hover {
            background: var(--color-primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(249, 115, 22, 0.35);
        }

        .btn-primary:active {
            transform: scale(0.98);
        }

        .btn-primary:focus-visible {
            outline: none;
            box-shadow: 0 0 0 4px rgba(249, 115, 22, 0.25);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: var(--color-text-primary);
            border: 1px solid rgba(15, 23, 42, 0.2);
            border-radius: var(--radius-btn);
            padding: 10px 20px;
            font-weight: 500;
            font-size: 0.95rem;
            transition: all 0.3s ease;
        }

        .btn-outline:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: var(--color-primary-soft);
        }

        .btn-outline:active {
            transform: scale(0.98);
        }

        .btn-outline:focus-visible {
            outline: none;
            box-shadow: 0 0 0 4px rgba(249, 115, 22, 0.15);
        }

        /* ===== 徽章 ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            background: var(--color-primary-soft);
            color: var(--color-primary-dark);
            border-radius: 999px;
            padding: 4px 16px;
            font-weight: 500;
            font-size: 0.875rem;
            transition: all 0.3s ease;
        }

        .badge-accent {
            background: var(--color-accent-soft);
            color: #047857;
        }

        /* ===== 标签 Chip ===== */
        .chip {
            display: inline-flex;
            align-items: center;
            border: 1px solid rgba(15, 23, 42, 0.1);
            border-radius: 999px;
            padding: 4px 16px;
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all 0.3s ease;
            background: #fff;
        }

        .chip:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: var(--color-primary-soft);
        }

        .chip-active {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }

        .chip-active:hover {
            background: var(--color-primary-dark);
            color: #fff;
        }

        /* ===== 卡片 ===== */
        .card {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
        }

        .card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(249, 115, 22, 0.3);
            transform: translateY(-4px);
        }

        /* ===== 导航 Dock ===== */
        .nav-dock {
            position: fixed;
            top: 16px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1000;
            width: calc(100% - 32px);
            max-width: 960px;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--color-border);
            border-radius: 999px;
            box-shadow: 0 8px 30px rgba(15, 23, 42, 0.08);
            padding: 8px 16px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

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

        .nav-link {
            padding: 8px 14px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            border-radius: 999px;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--color-primary);
            background: var(--color-primary-soft);
        }

        .nav-link.active {
            color: var(--color-primary);
            font-weight: 600;
            background: var(--color-primary-soft);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            background: var(--color-primary);
            color: #fff;
            border: none;
            border-radius: 999px;
            padding: 8px 20px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all 0.3s ease;
            box-shadow: 0 2px 8px rgba(249, 115, 22, 0.25);
            white-space: nowrap;
        }

        .nav-cta:hover {
            background: var(--color-primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(249, 115, 22, 0.35);
        }

        .nav-mobile-toggle {
            display: none;
            background: none;
            border: 1px solid var(--color-border);
            border-radius: 999px;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            color: var(--color-text-primary);
            transition: all 0.3s ease;
        }

        .nav-mobile-toggle:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
        }

        .nav-mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            left: 16px;
            right: 16px;
            z-index: 999;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(16px);
            border: 1px solid var(--color-border);
            border-radius: 24px;
            box-shadow: 0 20px 50px rgba(15, 23, 42, 0.15);
            padding: 16px;
            flex-direction: column;
            gap: 4px;
        }

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

        .nav-mobile-menu a {
            display: block;
            padding: 12px 16px;
            border-radius: 12px;
            font-size: 1.05rem;
            font-weight: 500;
            color: var(--color-text-primary);
            transition: all 0.3s ease;
        }

        .nav-mobile-menu a:hover {
            background: var(--color-primary-soft);
            color: var(--color-primary);
        }

        .nav-mobile-menu a.active {
            background: var(--color-primary);
            color: #fff;
        }

        .nav-mobile-menu .mobile-cta {
            background: var(--color-primary);
            color: #fff;
            text-align: center;
            margin-top: 8px;
            font-weight: 600;
        }

        .nav-mobile-menu .mobile-cta:hover {
            background: var(--color-primary-dark);
        }

        @media (max-width: 768px) {
            .nav-links,
            .nav-cta {
                display: none;
            }
            .nav-mobile-toggle {
                display: flex;
            }
        }

        /* ===== 分类页头部 ===== */
        .category-hero {
            position: relative;
            padding: 140px 0 64px;
            background: var(--color-bg-alt);
            overflow: hidden;
        }

        .category-hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.25;
        }

        .category-hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(255, 255, 255, 0.85) 50%, rgba(249, 115, 22, 0.08) 100%);
        }

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

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.875rem;
            color: var(--color-text-secondary);
            margin-bottom: 20px;
        }

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

        .breadcrumb .sep {
            color: rgba(15, 23, 42, 0.3);
        }

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

        .category-hero h1 {
            font-size: clamp(2rem, 5vw, 3rem);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            color: var(--color-secondary);
            margin-bottom: 16px;
        }

        .category-hero h1 .highlight {
            color: var(--color-primary);
        }

        .category-hero .subtitle {
            font-size: 1.05rem;
            color: var(--color-text-secondary);
            max-width: 640px;
            line-height: 1.7;
            margin-bottom: 32px;
        }

        .search-box {
            display: flex;
            align-items: center;
            max-width: 560px;
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: 999px;
            padding: 4px 4px 4px 20px;
            box-shadow: var(--shadow-card);
            transition: border-color 0.3s, box-shadow 0.3s;
        }

        .search-box:focus-within {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 4px rgba(249, 115, 22, 0.1);
        }

        .search-box input {
            flex: 1;
            border: none;
            outline: none;
            font-size: 0.9rem;
            background: transparent;
            height: 40px;
            color: var(--color-text-primary);
        }

        .search-box input::placeholder {
            color: rgba(87, 83, 78, 0.5);
        }

        .search-box button {
            background: var(--color-primary);
            color: #fff;
            border: none;
            border-radius: 999px;
            padding: 8px 24px;
            font-size: 0.875rem;
            font-weight: 500;
            transition: all 0.3s ease;
        }

        .search-box button:hover {
            background: var(--color-primary-dark);
        }

        /* ===== 筛选栏 ===== */
        .filter-bar {
            padding: 24px 0;
            border-bottom: 1px solid var(--color-border);
            background: #fff;
        }

        .filter-bar .filter-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .filter-group {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .count-text {
            font-size: 0.875rem;
            color: var(--color-text-secondary);
            white-space: nowrap;
        }

        .count-text strong {
            color: var(--color-primary);
            font-weight: 600;
        }

        /* ===== 内容卡片流 ===== */
        .content-grid {
            padding: 48px 0 64px;
        }

        .content-cards {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
        }

        .content-card {
            display: grid;
            grid-template-columns: 40% 60%;
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
        }

        .content-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(249, 115, 22, 0.4);
            transform: translateY(-4px);
        }

        .card-thumb {
            overflow: hidden;
            aspect-ratio: 4/3;
            position: relative;
        }

        .card-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .content-card:hover .card-thumb img {
            transform: scale(1.03);
        }

        .card-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--color-text-secondary);
        }

        .card-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--color-secondary);
            line-height: 1.4;
            transition: color 0.3s;
        }

        .content-card:hover .card-body h3 {
            color: var(--color-primary);
        }

        .card-body .desc {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            line-height: 1.65;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 4px;
        }

        .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .card-tags .chip {
            font-size: 0.8rem;
            padding: 2px 12px;
        }

        .card-footer {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: auto;
            padding-top: 12px;
            border-top: 1px solid var(--color-border);
            font-size: 0.85rem;
            color: var(--color-text-secondary);
        }

        .card-footer .read-more {
            margin-left: auto;
            color: var(--color-primary);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap 0.3s;
        }

        .card-footer .read-more:hover {
            gap: 8px;
        }

        .load-more-wrap {
            text-align: center;
            margin-top: 40px;
        }

        @media (max-width: 768px) {
            .content-card {
                grid-template-columns: 1fr;
            }
            .card-thumb {
                aspect-ratio: 16/9;
            }
        }

        /* ===== SEO 文本区 ===== */
        .seo-section {
            background: var(--color-bg-alt);
            padding: 64px 0;
        }

        .seo-section .container {
            max-width: 1000px;
        }

        .seo-section h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-secondary);
            margin-bottom: 24px;
            letter-spacing: -0.01em;
        }

        .seo-section h2 .highlight {
            color: var(--color-primary);
        }

        .seo-section p {
            font-size: 0.95rem;
            line-height: 1.8;
            color: var(--color-text-secondary);
            margin-bottom: 20px;
            max-width: 72ch;
        }

        .seo-section p:last-child {
            margin-bottom: 0;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--color-bg-dark);
            color: rgba(255, 255, 255, 0.5);
            padding: 60px 0 0;
        }

        .footer h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .footer a {
            display: block;
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.875rem;
            margin-bottom: 10px;
            transition: color 0.3s;
        }

        .footer a:hover {
            color: var(--color-primary);
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-desc {
            font-size: 0.875rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.4);
            margin-bottom: 0;
        }

        .footer-subscribe {
            display: flex;
            gap: 8px;
            margin-top: 12px;
        }

        .footer-subscribe input {
            flex: 1;
            height: 42px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            background: rgba(255, 255, 255, 0.08);
            padding: 0 16px;
            font-size: 0.875rem;
            color: #fff;
            outline: none;
            transition: border-color 0.3s, box-shadow 0.3s;
            min-width: 0;
        }

        .footer-subscribe input::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-subscribe input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 4px rgba(249, 115, 22, 0.1);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            margin-top: 40px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.35);
        }

        @media (max-width: 768px) {
            .footer-subscribe {
                flex-direction: column;
            }
            .footer-subscribe .btn-primary {
                width: 100%;
            }
        }

        /* ===== 焦点可见性 ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: none;
            box-shadow: 0 0 0 4px rgba(249, 115, 22, 0.2);
        }