/* roulang page: index */
/* ============ 设计变量 ============ */
        :root {
            --primary: #EA580C;
            --primary-dark: #C2410C;
            --accent: #F59E0B;
            --ink: #1C1917;
            --graphite: #292524;
            --paper: #FAFAF7;
            --warm-gray: #F5F5F4;
            --moss: #4D7C0F;
            --border: #E7E5E4;
            --text-body: #292524;
            --text-muted: #78716C;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-full: 999px;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 12px 24px -8px rgba(0, 0, 0, 0.12);
            --container-w: 1200px;
            --header-h: 72px;
        }

        /* ============ 基础 Reset ============ */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, 'Segoe UI', sans-serif;
            background: var(--paper);
            color: var(--text-body);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }

        /* ============ 容器 ============ */
        .main-container {
            max-width: var(--container-w);
            margin: 0 auto;
            padding-left: 16px;
            padding-right: 16px;
            width: 100%;
        }
        @media (min-width: 768px) {
            .main-container {
                padding-left: 24px;
                padding-right: 24px;
            }
        }

        /* ============ Header 导航 ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 999;
            background: rgba(250, 250, 247, 0.92);
            -webkit-backdrop-filter: blur(12px);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            height: var(--header-h);
            transition: background 0.3s ease;
        }
        .site-header.scrolled {
            background: rgba(250, 250, 247, 0.97);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-h);
            gap: 16px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: rgba(234, 88, 12, 0.1);
            border-radius: 50%;
        }
        .brand-text {
            font-size: 20px;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--ink);
        }
        .main-nav {
            display: none;
            align-items: center;
            gap: 28px;
        }
        @media (min-width: 1024px) {
            .main-nav {
                display: flex;
            }
        }
        .nav-link {
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            padding: 8px 2px;
            transition: color 0.2s ease;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left center;
            transition: transform 0.25s ease;
        }
        .nav-link:hover {
            color: var(--primary);
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-actions {
            display: none;
            align-items: center;
            gap: 12px;
        }
        @media (min-width: 1024px) {
            .nav-actions {
                display: flex;
            }
        }

        /* 汉堡按钮 */
        .nav-toggle {
            display: flex;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            z-index: 1001;
        }
        @media (min-width: 1024px) {
            .nav-toggle {
                display: none;
            }
        }
        .nav-toggle span {
            width: 24px;
            height: 2px;
            background: var(--ink);
            border-radius: 2px;
            transition: all 0.3s ease;
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* 移动端抽屉 */
        .mobile-menu {
            position: fixed;
            top: 0;
            right: -100%;
            width: 100%;
            height: 100vh;
            height: 100dvh;
            background: var(--paper);
            z-index: 1000;
            transition: right 0.3s ease;
            padding: 88px 24px 32px;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .mobile-menu.open {
            right: 0;
        }
        .mobile-menu nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .mobile-menu .nav-link {
            font-size: 18px;
            padding: 14px 0;
            border-bottom: 1px solid var(--border);
        }
        .mobile-actions {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: auto;
        }

        /* ============ 按钮 ============ */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            line-height: 1.2;
            border: 1px solid transparent;
            transition: all 0.2s ease;
            cursor: pointer;
            text-align: center;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .btn-outline {
            background: transparent;
            color: var(--ink);
            border-color: #D6D3D1;
        }
        .btn-outline:hover {
            background: var(--warm-gray);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.5);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
        }
        .btn-lg {
            padding: 16px 32px;
            font-size: 16px;
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
        }
        .btn-block {
            width: 100%;
        }
        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        /* ============ 徽章 ============ */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: var(--radius-full);
            font-size: 13px;
            font-weight: 600;
            line-height: 1.2;
        }
        .badge-primary {
            background: rgba(234, 88, 12, 0.12);
            color: var(--primary);
        }
        .badge-warm {
            background: rgba(245, 158, 11, 0.14);
            color: #B45309;
        }
        .badge-dark {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .badge-moss {
            background: rgba(77, 124, 15, 0.12);
            color: var(--moss);
        }

        /* ============ Section ============ */
        .section {
            padding-top: 56px;
            padding-bottom: 56px;
        }
        @media (min-width: 768px) {
            .section {
                padding-top: 80px;
                padding-bottom: 80px;
            }
        }
        .section-alt {
            background: var(--warm-gray);
        }
        .section-dark {
            background: var(--ink);
            color: #fff;
        }
        .section-head {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 48px;
        }
        .section-head .badge {
            margin-bottom: 16px;
        }
        .section-head h2 {
            font-size: 30px;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            color: var(--ink);
            margin-bottom: 12px;
        }
        @media (min-width: 768px) {
            .section-head h2 {
                font-size: 38px;
            }
        }
        .section-head p {
            color: var(--text-muted);
            font-size: 16px;
            line-height: 1.7;
        }

        /* ============ Hero ============ */
        .hero {
            position: relative;
            background: var(--ink);
            color: #fff;
            overflow: hidden;
            padding: 72px 0 80px;
        }
        @media (min-width: 768px) {
            .hero {
                padding: 100px 0 110px;
            }
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(105deg, rgba(28, 25, 23, 0.94) 0%, rgba(28, 25, 23, 0.82) 45%, rgba(28, 25, 23, 0.55) 100%);
        }
        .hero-grid {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr;
            gap: 48px;
            align-items: center;
        }
        @media (min-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1.05fr 0.95fr;
                gap: 56px;
            }
        }
        .hero h1 {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.02em;
            color: #fff;
            margin: 16px 0 20px;
        }
        @media (min-width: 640px) {
            .hero h1 {
                font-size: 44px;
            }
        }
        @media (min-width: 1024px) {
            .hero h1 {
                font-size: 52px;
            }
        }
        .hero h1 .highlight {
            color: var(--accent);
        }
        .hero-sub {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.8);
            max-width: 540px;
            margin-bottom: 32px;
        }
        @media (min-width: 768px) {
            .hero-sub {
                font-size: 17px;
            }
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 36px;
        }
        .hero-trust {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
        }
        .hero-trust span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
        }
        .hero-trust svg {
            width: 16px;
            height: 16px;
            color: var(--accent);
        }

        /* Hero 右侧榜单 */
        .rank-card {
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            padding: 24px;
            -webkit-backdrop-filter: blur(8px);
            backdrop-filter: blur(8px);
            box-shadow: 0 24px 48px -12px rgba(0, 0, 0, 0.4);
        }
        .rank-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
        }
        .rank-title {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
        }
        .rank-badge {
            font-size: 12px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.7);
            background: rgba(255, 255, 255, 0.1);
            padding: 4px 10px;
            border-radius: var(--radius-full);
        }
        .rank-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .rank-item {
            display: grid;
            grid-template-columns: 32px 1fr auto;
            gap: 12px;
            align-items: center;
            padding: 12px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            transition: background 0.2s ease;
        }
        .rank-item:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .rank-num {
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            font-size: 13px;
            font-weight: 700;
            background: rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.8);
        }
        .rank-num-1 {
            background: var(--primary);
            color: #fff;
        }
        .rank-num-2 {
            background: var(--accent);
            color: var(--ink);
        }
        .rank-info {
            min-width: 0;
        }
        .rank-name {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            margin-bottom: 6px;
        }
        .rank-bar {
            height: 4px;
            background: rgba(255, 255, 255, 0.12);
            border-radius: 4px;
            overflow: hidden;
        }
        .rank-bar span {
            display: block;
            height: 100%;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }
        .rank-rate {
            font-size: 14px;
            font-weight: 700;
            color: var(--accent);
        }

        /* ============ 优惠阶梯 ============ */
        .pricing-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
            max-width: 1024px;
            margin: 0 auto;
        }
        @media (min-width: 768px) {
            .pricing-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 20px;
            }
        }
        .price-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-sm);
            transition: all 0.25s ease;
            position: relative;
        }
        .price-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .price-card.featured {
            border: 2px solid var(--primary);
            box-shadow: 0 12px 32px -8px rgba(234, 88, 12, 0.2);
        }
        .price-tag {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--primary);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 16px;
            border-radius: var(--radius-full);
            white-space: nowrap;
        }
        .price-card:not(.featured) .price-tag {
            display: none;
        }
        .price-name {
            font-size: 18px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 8px;
        }
        .price-amount {
            font-size: 42px;
            font-weight: 800;
            color: var(--ink);
            line-height: 1.1;
            margin-bottom: 4px;
            letter-spacing: -0.02em;
        }
        .price-amount .currency {
            font-size: 22px;
            vertical-align: top;
            margin-right: 2px;
            color: var(--primary);
        }
        .price-amount .per {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            margin-left: 4px;
        }
        .price-desc {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .price-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-bottom: 28px;
            flex: 1;
        }
        .price-list li {
            position: relative;
            padding-left: 26px;
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.5;
        }
        .price-list li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 7px;
            width: 16px;
            height: 16px;
            background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%234D7C0F'%3E%3Cpath fill-rule='evenodd' d='M16.704 4.153a.75.75 0 0 1 .143 1.052l-8 10.5a.75.75 0 0 1-1.127.075l-4.5-4.5a.75.75 0 0 1 1.06-1.06l3.894 3.893 7.48-9.817a.75.75 0 0 1 1.05-.143Z' clip-rule='evenodd'/%3E%3C/svg%3E") center/contain no-repeat;
        }

        /* ============ 套餐对比 ============ */
        .compare-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
            align-items: stretch;
            max-width: 960px;
            margin: 0 auto;
        }
        @media (min-width: 768px) {
            .compare-grid {
                grid-template-columns: 1fr auto 1fr;
                gap: 20px;
            }
        }
        .compare-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: #fff;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all 0.25s ease;
        }
        .compare-card:hover {
            box-shadow: var(--shadow-md);
        }
        .compare-ours {
            border-top: 3px solid var(--primary);
        }
        .compare-theirs {
            border-top: 3px solid #A8A29E;
            background: #F5F5F4;
        }
        .compare-card-img {
            overflow: hidden;
        }
        .compare-card-img img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: transform 0.3s ease;
        }
        .compare-card:hover .compare-card-img img {
            transform: scale(1.03);
        }
        .compare-card-body {
            padding: 24px;
        }
        .compare-card-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 16px;
        }
        .compare-card-body ul {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .compare-card-body li {
            font-size: 14px;
            line-height: 1.5;
            padding-left: 24px;
            position: relative;
            color: var(--text-body);
        }
        .compare-ours li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 6px;
            width: 16px;
            height: 16px;
            background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%23EA580C'%3E%3Cpath fill-rule='evenodd' d='M16.704 4.153a.75.75 0 0 1 .143 1.052l-8 10.5a.75.75 0 0 1-1.127.075l-4.5-4.5a.75.75 0 0 1 1.06-1.06l3.894 3.893 7.48-9.817a.75.75 0 0 1 1.05-.143Z' clip-rule='evenodd'/%3E%3C/svg%3E") center/contain no-repeat;
        }
        .compare-theirs li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 6px;
            width: 16px;
            height: 16px;
            background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%23A8A29E'%3E%3Cpath d='M6.28 5.22a.75.75 0 0 0-1.06 1.06L8.94 10l-3.72 3.72a.75.75 0 1 0 1.06 1.06L10 11.06l3.72 3.72a.75.75 0 1 0 1.06-1.06L11.06 10l3.72-3.72a.75.75 0 0 0-1.06-1.06L10 8.94 6.28 5.22Z'/%3E%3C/svg%3E") center/contain no-repeat;
        }
        .compare-vs {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .compare-vs span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            background: var(--ink);
            color: #fff;
            font-size: 16px;
            font-weight: 800;
            border-radius: 50%;
            box-shadow: var(--shadow-md);
        }

        /* ============ 保障条 ============ */
        .guarantee-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
            max-width: 1024px;
            margin: 0 auto;
        }
        @media (min-width: 640px) {
            .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .guarantee-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        .guarantee-item {
            text-align: center;
            padding: 32px 20px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            transition: all 0.25s ease;
            box-shadow: var(--shadow-sm);
        }
        .guarantee-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .guarantee-icon {
            width: 52px;
            height: 52px;
            margin: 0 auto 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(234, 88, 12, 0.1);
            border-radius: var(--radius-md);
            color: var(--primary);
        }
        .guarantee-item h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 8px;
        }
        .guarantee-item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ============ 资讯区 ============ */
        .news-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            max-width: 1024px;
            margin: 0 auto;
        }
        @media (min-width: 1024px) {
            .news-grid {
                grid-template-columns: 1.4fr 1fr;
                gap: 48px;
                align-items: start;
            }
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .news-item {
            display: flex;
            flex-direction: column;
            gap: 6px;
            padding: 20px 24px;
            border-bottom: 1px solid #F0EFEE;
            transition: background 0.2s ease;
        }
        .news-item:last-child {
            border-bottom: none;
        }
        .news-item:hover {
            background: var(--warm-gray);
        }
        .news-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            line-height: 1.5;
            transition: color 0.2s ease;
        }
        .news-item:hover .news-title {
            color: var(--primary);
        }
        .news-meta {
            font-size: 13px;
            color: var(--text-muted);
        }
        .news-side {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .side-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-sm);
        }
        .side-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 16px;
        }
        .side-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag-cloud a {
            display: inline-block;
            padding: 6px 14px;
            font-size: 13px;
            font-weight: 500;
            background: var(--warm-gray);
            color: var(--text-body);
            border-radius: var(--radius-full);
            border: 1px solid transparent;
            transition: all 0.2s ease;
        }
        .tag-cloud a:hover {
            background: rgba(234, 88, 12, 0.1);
            color: var(--primary);
            border-color: rgba(234, 88, 12, 0.2);
        }
        .side-img {
            width: 100%;
            height: 140px;
            object-fit: cover;
            border-radius: var(--radius-md);
            margin-bottom: 16px;
        }

        /* ============ FAQ ============ */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }
        .faq-item.active {
            border-color: rgba(234, 88, 12, 0.4);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            padding: 20px 24px;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            background: transparent;
            transition: color 0.2s ease;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform 0.3s ease;
        }
        .faq-item.active .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }
        .faq-item.active .faq-answer {
            max-height: 400px;
        }
        .faq-answer p {
            padding: 0 24px 20px;
            font-size: 15px;
            line-height: 1.7;
            color: var(--text-muted);
        }

        /* ============ 限时入口 CTA ============ */
        .cta-box {
            position: relative;
            overflow: hidden;
            background: var(--ink);
            border-radius: var(--radius-lg);
            padding: 48px 32px;
            text-align: center;
            color: #fff;
            border: 1px solid rgba(234, 88, 12, 0.3);
        }
        @media (min-width: 768px) {
            .cta-box {
                padding: 64px 48px;
            }
        }
        .cta-box::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.35;
        }
        .cta-box::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(28, 25, 23, 0.6) 0%, rgba(28, 25, 23, 0.85) 100%);
        }
        .cta-box>* {
            position: relative;
            z-index: 2;
        }
        .cta-box h2 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }
        @media (min-width: 768px) {
            .cta-box h2 {
                font-size: 36px;
            }
        }
        .cta-box p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 32px;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }

        /* ============ Footer ============ */
        .site-footer {
            background: var(--ink);
            color: #D6D3D1;
            padding: 64px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 40px;
            padding-bottom: 48px;
        }
        @media (min-width: 640px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1.6fr 1fr 1fr 1fr;
                gap: 48px;
            }
        }
        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: #A8A29E;
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: #A8A29E;
            padding: 6px 0;
            transition: color 0.2s ease;
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 24px 0;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: space-between;
            font-size: 12px;
            color: #78716C;
        }

        /* ============ 响应式修正 ============ */
        @media (max-width: 639px) {
            .hero-actions .btn {
                width: 100%;
            }
            .cta-actions .btn {
                width: 100%;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: center;
                text-align: center;
            }
        }
        @media (min-width: 640px) and (max-width: 767px) {
            .price-card.featured {
                order: -1;
            }
        }
        @media (max-width: 520px) {
            .hero h1 {
                font-size: 30px;
            }
            .section-head h2 {
                font-size: 26px;
            }
            .price-amount {
                font-size: 36px;
            }
            .news-item {
                padding: 16px 18px;
            }
        }

/* roulang page: category1 */
:root {
  --primary: #EA580C;
  --primary-dark: #C2410C;
  --accent: #F59E0B;
  --ink: #1C1917;
  --graphite: #292524;
  --paper: #FAFAF7;
  --warm-gray: #F5F5F4;
  --moss: #4D7C0F;
  --border: #E7E5E4;
  --text-body: #292524;
  --text-muted: #78716C;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 999px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 12px 24px -8px rgba(0,0,0,0.12);
  --container-w: 1200px;
  --header-h: 72px;
}
html { scroll-behavior: smooth; }
body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, 'Segoe UI', sans-serif;
  background: var(--paper);
  color: var(--text-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  margin: 0;
}
*, *::before, *::after { box-sizing: border-box; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.2s ease; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol, p, h1, h2, h3, h4, h5, h6, figure { margin: 0; padding: 0; }

.main-container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding-left: 16px;
  padding-right: 16px;
  width: 100%;
}
@media (min-width: 640px) {
  .main-container { padding-left: 24px; padding-right: 24px; }
}

/* ============ Header ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 999;
  background: rgba(250, 250, 247, 0.92);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: var(--header-h);
  transition: background 0.3s ease;
}
.site-header.scrolled { background: rgba(250, 250, 247, 0.97); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: rgba(234, 88, 12, 0.1);
  border-radius: 50%;
}
.brand-text {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-link {
  position: relative;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-body);
  padding: 8px 2px;
  transition: color 0.2s ease;
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.25s ease;
}
.nav-link:hover { color: var(--primary); }
.nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; z-index: 1001; }
.nav-toggle span { width: 24px; height: 2px; background: var(--ink); border-radius: 2px; transition: all 0.3s ease; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-menu {
  position: fixed;
  top: 0; right: -100%;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  background: var(--paper);
  z-index: 1000;
  transition: right 0.3s ease;
  padding: 88px 24px 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.mobile-menu.open { right: 0; }
.mobile-menu nav { display: flex; flex-direction: column; gap: 4px; }
.mobile-menu .nav-link { font-size: 18px; padding: 14px 0; border-bottom: 1px solid var(--border); }
.mobile-actions { display: flex; flex-direction: column; gap: 12px; margin-top: auto; }

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 15px;
  line-height: 1.2;
  border: 1px solid transparent;
  transition: all 0.2s ease;
  cursor: pointer;
  text-align: center;
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.btn-primary:active { transform: translateY(0); }
.btn-primary:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.btn-outline {
  border-color: var(--border);
  background: transparent;
  color: var(--text-body);
}
.btn-outline:hover {
  background: var(--warm-gray);
  border-color: #D6D3D1;
}
.btn-outline:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.btn-dark {
  background: var(--ink);
  color: #fff;
}
.btn-dark:hover { background: var(--graphite); transform: translateY(-2px); }

/* ============ 徽章 ============ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  background: rgba(234, 88, 12, 0.1);
  color: var(--primary);
}
.badge-success {
  background: rgba(77, 124, 15, 0.12);
  color: var(--moss);
}
.badge-dark {
  background: var(--ink);
  color: #fff;
}

/* ============ 面包屑 ============ */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 12px;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: var(--border); }
.breadcrumb .current { color: var(--text-body); font-weight: 500; }

/* ============ 页头 ============ */
.page-head {
  background: linear-gradient(120deg, var(--warm-gray), var(--paper));
  border-bottom: 1px solid var(--border);
  padding: 44px 0 40px;
}
.page-head-grid {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.page-head-title {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1.25;
  margin-bottom: 10px;
}
.page-head-desc {
  font-size: 16px;
  color: var(--text-muted);
  max-width: 620px;
  line-height: 1.7;
}
.search-box {
  width: 300px;
  max-width: 100%;
  position: relative;
}
.search-box input {
  width: 100%;
  padding: 10px 14px 10px 40px;
  border: 1px solid #D6D3D1;
  border-radius: 10px;
  font-size: 14px;
  background: #fff;
  color: var(--text-body);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.search-box input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(234, 88, 12, 0.15);
}
.search-box .search-icon {
  position: absolute;
  left: 13px; top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

/* ============ 主体布局 ============ */
.content-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 40px;
  padding: 48px 0 64px;
}

/* 侧边栏 */
.sidebar { min-width: 0; }
.sidebar-sticky { position: sticky; top: 96px; }
.sidebar-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 12px;
  padding-left: 14px;
}
.sidebar-nav { display: flex; flex-direction: column; gap: 2px; }
.sidebar-link {
  display: block;
  padding: 10px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-body);
  border-left: 3px solid transparent;
  border-radius: 0 8px 8px 0;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.sidebar-link:hover { background: var(--warm-gray); color: var(--primary); }
.sidebar-link.active {
  background: rgba(234, 88, 12, 0.07);
  color: var(--primary);
  border-left-color: var(--primary);
  font-weight: 600;
}

/* 内容区 */
.content-area { min-width: 0; }

/* 精选大卡 */
.featured-card {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.3s ease;
  margin-bottom: 36px;
}
.featured-card:hover { box-shadow: var(--shadow-md); }
.featured-image { position: relative; overflow: hidden; min-height: 260px; background: linear-gradient(135deg, #FED7AA, #FDE68A); }
.featured-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s ease; }
.featured-card:hover .featured-image img { transform: scale(1.03); }
.featured-body { padding: 28px 28px 24px; display: flex; flex-direction: column; justify-content: center; }
.featured-body .badge { align-self: flex-start; margin-bottom: 12px; }
.featured-body h3 { font-size: 22px; font-weight: 800; color: var(--ink); line-height: 1.35; margin-bottom: 10px; }
.featured-body p { font-size: 15px; color: var(--text-muted); line-height: 1.7; margin-bottom: 16px; }
.featured-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: var(--text-muted);
}
.featured-meta .meta-item { display: flex; align-items: center; gap: 5px; }

/* 小节标题 */
.section-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 800;
  color: var(--ink);
  margin: 40px 0 20px;
}
.section-title::before {
  content: '';
  width: 4px;
  height: 20px;
  background: var(--primary);
  border-radius: 2px;
}
.section-sub { font-size: 14px; color: var(--text-muted); margin-bottom: 20px; }

/* 双列卡片网格 */
.card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.content-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.3s ease, border-color 0.3s ease;
  display: flex;
  flex-direction: column;
}
.content-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}
.card-image { position: relative; overflow: hidden; aspect-ratio: 16/9; background: linear-gradient(135deg, #F5F5F4, #E7E5E4); }
.card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s ease; }
.content-card:hover .card-image img { transform: scale(1.04); }
.card-body { padding: 20px; display: flex; flex-direction: column; flex: 1; }
.card-body h4 { font-size: 17px; font-weight: 700; color: var(--ink); margin-bottom: 8px; line-height: 1.4; }
.card-body p { font-size: 14px; color: var(--text-muted); line-height: 1.65; margin-bottom: 12px; flex: 1; }
.card-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  margin-top: 12px;
  transition: gap 0.2s ease;
}
.card-link:hover { gap: 9px; }

/* 分页器 */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 48px;
}
.page-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-body);
  background: #fff;
  transition: all 0.2s ease;
}
.page-link:hover { border-color: var(--primary); color: var(--primary); }
.page-link.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  font-weight: 600;
}
.page-link.disabled { opacity: 0.5; cursor: not-allowed; }

/* ============ FAQ ============ */
.faq-section { padding: 56px 0; }
.faq-wrap { max-width: 860px; margin: 0 auto; }
.faq-heading { text-align: center; margin-bottom: 32px; }
.faq-heading h2 { font-size: 30px; font-weight: 800; color: var(--ink); letter-spacing: -0.01em; }
.faq-heading p { color: var(--text-muted); font-size: 15px; margin-top: 8px; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: #fff;
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color 0.2s ease;
}
.faq-item.open { border-color: var(--primary); }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  text-align: left;
  transition: color 0.2s ease;
}
.faq-question:hover { color: var(--primary); }
.faq-question .faq-arrow { transition: transform 0.3s ease; color: var(--text-muted); flex-shrink: 0; }
.faq-item.open .faq-arrow { transform: rotate(180deg); color: var(--primary); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.faq-answer-inner { padding: 0 20px 20px; color: var(--text-muted); font-size: 15px; line-height: 1.7; }

/* ============ CTA ============ */
.cta-section {
  background: var(--ink);
  color: #fff;
  padding: 60px 0;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -80px; right: -60px;
  width: 260px; height: 260px;
  background: radial-gradient(circle, rgba(234, 88, 12, 0.35), transparent 70%);
  pointer-events: none;
}
.cta-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: center;
}
.cta-info h2 { font-size: 32px; font-weight: 800; margin-bottom: 14px; letter-spacing: -0.01em; }
.cta-info h2 span { color: var(--accent); }
.cta-info p { color: #D6D3D1; font-size: 15px; line-height: 1.7; margin-bottom: 24px; }
.cta-contacts { display: flex; flex-wrap: wrap; gap: 20px; margin-bottom: 24px; }
.cta-contact { display: flex; align-items: center; gap: 8px; font-size: 14px; color: #D6D3D1; }
.cta-contact svg { color: var(--accent); }
.cta-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.cta-form { background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.12); border-radius: var(--radius-lg); padding: 28px; }
.cta-form h3 { font-size: 18px; font-weight: 700; margin-bottom: 16px; }
.form-group { margin-bottom: 14px; }
.form-label { display: block; font-size: 13px; color: #A8A29E; margin-bottom: 5px; }
.form-input {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid rgba(255,255,255,0.18);
  background: rgba(255,255,255,0.06);
  border-radius: 10px;
  font-size: 14px;
  color: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form-input::placeholder { color: #A8A29E; }
.form-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(234, 88, 12, 0.25);
}
textarea.form-input { min-height: 80px; resize: vertical; }
.form-submit {
  width: 100%;
  padding: 12px;
  background: var(--primary);
  color: #fff;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  transition: background 0.2s, transform 0.2s;
}
.form-submit:hover { background: var(--primary-dark); }
.form-submit:active { transform: translateY(1px); }

/* ============ Footer ============ */
.site-footer {
  background: var(--ink);
  color: #D6D3D1;
  padding: 56px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.footer-logo span { font-size: 20px; font-weight: 800; color: #fff; }
.footer-brand p { font-size: 14px; color: #A8A29E; line-height: 1.7; max-width: 300px; }
.footer-col h4 { font-size: 14px; font-weight: 700; color: #fff; margin-bottom: 14px; }
.footer-col a { display: block; font-size: 14px; color: #A8A29E; padding: 5px 0; transition: color 0.2s; }
.footer-col a:hover { color: var(--primary); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 12px;
  color: #78716C;
  flex-wrap: wrap;
}

/* ============ 响应式 ============ */
@media (max-width: 1023px) {
  .main-nav { display: none; }
  .nav-actions { display: none; }
  .nav-toggle { display: flex; }
  .mobile-menu nav { display: flex; }
  .content-layout { grid-template-columns: 1fr; gap: 24px; }
  .sidebar-sticky { position: static; }
  .sidebar-nav {
    flex-direction: row;
    overflow-x: auto;
    gap: 8px;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
  }
  .sidebar-link {
    border-left: none;
    border-radius: var(--radius-full);
    background: var(--warm-gray);
    padding: 8px 16px;
    font-size: 14px;
    white-space: nowrap;
    flex-shrink: 0;
  }
  .sidebar-link.active { background: rgba(234, 88, 12, 0.1); border-left: none; }
  .sidebar-title { padding-left: 0; }
  .cta-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 767px) {
  .page-head { padding: 32px 0 28px; }
  .page-head-grid { flex-direction: column; }
  .search-box { width: 100%; }
  .featured-card { grid-template-columns: 1fr; }
  .featured-image { min-height: 200px; }
  .card-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .cta-actions { flex-direction: column; }
  .cta-actions .btn { width: 100%; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}