/* roulang page: index */
:root {
            --primary: #0F2645;
            --primary-dark: #0B1C3A;
            --secondary: #2C5F8A;
            --accent: #0EA5E9;
            --accent-light: rgba(14, 165, 233, 0.12);
            --bg: #F8FAFC;
            --card-bg: #FFFFFF;
            --text-title: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --border: #CBD5E1;
            --border-light: #E2E8F0;
            --shadow-sm: 0 4px 20px rgba(15, 38, 69, 0.08);
            --shadow-md: 0 8px 30px rgba(15, 38, 69, 0.12);
            --shadow-lg: 0 16px 48px rgba(15, 38, 69, 0.16);
            --radius-sm: 6px;
            --radius: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing: 24px;
            --spacing-lg: 32px;
            --spacing-xl: 48px;
            --spacing-2xl: 64px;
            --spacing-3xl: 80px;
            --nav-height: 64px;
            --bottom-tab-height: 56px;
            --container-max: 1200px;
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Inter', 'Roboto', sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text-body);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-bottom: var(--bottom-tab-height);
            min-height: 100vh;
        }

        @media (min-width: 768px) {
            body {
                padding-bottom: 0;
            }
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent);
            text-decoration: underline;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            font-size: inherit;
        }
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            background: #fff;
            color: var(--text-title);
            transition: border-color var(--transition), box-shadow var(--transition);
            outline: none;
            width: 100%;
            height: 48px;
        }
        input:focus,
        select:focus,
        textarea:focus {
            border-color: var(--secondary);
            box-shadow: 0 0 0 3px rgba(44, 95, 138, 0.2);
        }
        input.error {
            border-color: #e53e3e;
            box-shadow: 0 0 0 3px rgba(229, 62, 62, 0.15);
        }
        input.success {
            border-color: #38a169;
            box-shadow: 0 0 0 3px rgba(56, 161, 105, 0.15);
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--spacing);
        }
        @media (max-width: 767px) {
            .container {
                padding: 0 var(--spacing-sm);
            }
        }

        section {
            padding: var(--spacing-3xl) 0;
        }
        @media (max-width: 767px) {
            section {
                padding: var(--spacing-xl) 0;
            }
        }

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: var(--spacing-xs);
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: var(--spacing-sm);
            line-height: 1.3;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 680px;
            line-height: 1.7;
        }
        @media (max-width: 767px) {
            .section-title {
                font-size: 1.5rem;
            }
            .section-desc {
                font-size: 0.95rem;
            }
        }

        /* ========== 顶部导航 ========== */
        .top-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--nav-height);
            background: var(--primary);
            z-index: 1000;
            display: flex;
            align-items: center;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
        }
        .top-nav .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .nav-logo {
            font-size: 1.15rem;
            font-weight: 700;
            color: #ffffff;
            white-space: nowrap;
            letter-spacing: 0.02em;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-logo:hover {
            color: #ffffff;
            text-decoration: none;
            opacity: 0.9;
        }
        .nav-logo-icon {
            width: 32px;
            height: 32px;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: var(--spacing);
            list-style: none;
        }
        .nav-links a {
            color: rgba(255, 255, 255, 0.9);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 6px 0;
            position: relative;
            text-decoration: none;
            transition: color var(--transition);
            white-space: nowrap;
        }
        .nav-links a:hover {
            color: #ffffff;
            text-decoration: none;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--accent);
            border-radius: 3px;
            transition: width var(--transition);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-links a.active {
            color: #ffffff;
        }
        .nav-btn {
            padding: 10px 20px;
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 0.9rem;
            border: 2px solid var(--secondary);
            color: #ffffff;
            background: transparent;
            transition: all var(--transition);
            white-space: nowrap;
            text-decoration: none;
            display: inline-block;
        }
        .nav-btn:hover {
            background: var(--secondary);
            color: #ffffff;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            z-index: 1001;
        }
        .hamburger span {
            width: 26px;
            height: 2.5px;
            background: #ffffff;
            border-radius: 2px;
            transition: var(--transition);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        @media (max-width: 767px) {
            .hamburger {
                display: flex;
            }
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #ffffff;
                flex-direction: column;
                padding: var(--spacing);
                gap: 4px;
                box-shadow: var(--shadow-md);
                transform: translateY(-120%);
                transition: transform var(--transition);
                z-index: 999;
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            }
            .nav-links.open {
                transform: translateY(0);
            }
            .nav-links a {
                color: var(--text-title);
                padding: 12px 16px;
                border-radius: var(--radius);
                display: block;
                font-size: 1rem;
            }
            .nav-links a:hover {
                background: var(--accent-light);
                color: var(--primary);
            }
            .nav-links a::after {
                display: none;
            }
            .nav-links a.active {
                background: var(--accent-light);
                color: var(--primary);
                font-weight: 700;
            }
            .nav-btn {
                display: none;
            }
            .top-nav .nav-btn-desktop {
                display: none;
            }
        }
        @media (min-width: 768px) {
            .nav-btn-mobile {
                display: none;
            }
        }

        /* ========== 移动端底部 Tab ========== */
        .bottom-tab-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            height: var(--bottom-tab-height);
            background: #ffffff;
            border-top: 1px solid var(--border-light);
            z-index: 1000;
            box-shadow: 0 -2px 12px rgba(0, 0, 0, 0.06);
        }
        .bottom-tab-nav .tab-list {
            display: flex;
            height: 100%;
            list-style: none;
            align-items: center;
        }
        .bottom-tab-nav .tab-item {
            flex: 1;
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 3px;
            cursor: pointer;
            color: var(--text-muted);
            font-size: 10px;
            font-weight: 500;
            transition: color var(--transition);
            text-decoration: none;
            padding: 4px 0;
        }
        .bottom-tab-nav .tab-item svg {
            width: 24px;
            height: 24px;
            stroke: currentColor;
            fill: none;
            stroke-width: 2;
            transition: stroke var(--transition);
        }
        .bottom-tab-nav .tab-item.active {
            color: var(--primary);
            font-weight: 700;
        }
        .bottom-tab-nav .tab-item.active svg {
            stroke: var(--primary);
        }
        @media (max-width: 767px) {
            .bottom-tab-nav {
                display: block;
            }
        }

        /* ========== Hero ========== */
        .hero {
            padding-top: calc(var(--nav-height) + var(--spacing-3xl));
            padding-bottom: var(--spacing-3xl);
            background: linear-gradient(135deg, #F0F4F8 0%, #E8EEF4 40%, #F8FAFC 100%);
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 55%;
            height: 100%;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            opacity: 0.55;
            z-index: 0;
        }
        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(15, 38, 69, 0.03) 0%, transparent 70%);
            z-index: 0;
            pointer-events: none;
        }
        .hero .container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-2xl);
            align-items: center;
            position: relative;
            z-index: 1;
        }
        .hero-content {
            max-width: 560px;
        }
        .hero-content .hero-badge {
            display: inline-block;
            background: var(--accent-light);
            color: var(--secondary);
            font-weight: 600;
            font-size: 0.85rem;
            padding: 6px 14px;
            border-radius: 20px;
            margin-bottom: var(--spacing);
            letter-spacing: 0.03em;
        }
        .hero-content h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--text-title);
            line-height: 1.25;
            margin-bottom: var(--spacing-sm);
            letter-spacing: -0.01em;
        }
        .hero-content .hero-subtitle {
            font-size: 1.1rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: var(--spacing-lg);
        }
        .hero-cta-group {
            display: flex;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
            margin-bottom: var(--spacing);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 13px 28px;
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            text-decoration: none;
            cursor: pointer;
            border: 2px solid transparent;
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .btn:active {
            transform: scale(0.98);
        }
        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }
        .btn-primary {
            background: var(--primary);
            color: #ffffff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            text-decoration: none;
            color: #ffffff;
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--accent-light);
            border-color: var(--secondary);
            color: var(--secondary);
            text-decoration: none;
        }
        .btn-white-outline {
            background: transparent;
            color: #ffffff;
            border-color: rgba(255, 255, 255, 0.7);
        }
        .btn-white-outline:hover {
            background: #ffffff;
            color: var(--primary);
            text-decoration: none;
        }
        .hero-form {
            background: #ffffff;
            border-radius: var(--radius-xl);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow-lg);
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }
        .hero-form label {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-title);
        }
        .hero-form .form-row {
            display: flex;
            gap: var(--spacing-xs);
        }
        .hero-form .form-row input {
            flex: 1;
        }
        .hero-form .form-row .btn {
            flex-shrink: 0;
        }
        @media (max-width: 1023px) {
            .hero .container {
                grid-template-columns: 1fr;
                gap: var(--spacing-xl);
            }
            .hero::before {
                width: 100%;
                opacity: 0.3;
            }
            .hero-content h1 {
                font-size: 2rem;
            }
        }
        @media (max-width: 767px) {
            .hero {
                padding-top: calc(var(--nav-height) + var(--spacing-xl));
                padding-bottom: var(--spacing-xl);
            }
            .hero-content h1 {
                font-size: 1.6rem;
            }
            .hero-content .hero-subtitle {
                font-size: 0.95rem;
            }
            .hero-form .form-row {
                flex-direction: column;
            }
        }

        /* ========== 板块通用 ========== */
        .section-header {
            text-align: center;
            margin-bottom: var(--spacing-2xl);
        }
        .section-header .section-title {
            margin-bottom: var(--spacing-xs);
        }
        .section-header .section-desc {
            margin: 0 auto;
        }
        @media (max-width: 767px) {
            .section-header {
                margin-bottom: var(--spacing-xl);
            }
        }

        /* ========== KPI 数据指标 ========== */
        .kpi-section {
            background: #ffffff;
        }
        .kpi-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
            text-align: center;
        }
        .kpi-card {
            padding: var(--spacing-lg);
            border-radius: var(--radius-lg);
            background: var(--bg);
            transition: all var(--transition);
        }
        .kpi-card:hover {
            box-shadow: var(--shadow-sm);
            transform: translateY(-2px);
        }
        .kpi-card .kpi-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            margin-bottom: var(--spacing-xs);
        }
        .kpi-card .kpi-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
        }
        @media (max-width: 1023px) {
            .kpi-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing);
            }
        }
        @media (max-width: 520px) {
            .kpi-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-sm);
            }
            .kpi-card .kpi-number {
                font-size: 2rem;
            }
        }

        /* ========== 资讯板块 ========== */
        .news-section {
            background: var(--bg);
        }
        .news-layout {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: var(--spacing-xl);
            align-items: start;
        }
        .news-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .news-list li {
            border-bottom: 1px solid var(--border-light);
        }
        .news-list li:last-child {
            border-bottom: none;
        }
        .news-list a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0;
            color: var(--text-title);
            font-weight: 500;
            font-size: 1rem;
            text-decoration: none;
            transition: all var(--transition);
            gap: var(--spacing-sm);
        }
        .news-list a:hover {
            color: var(--accent);
            text-decoration: none;
            padding-left: 8px;
        }
        .news-list .news-date {
            font-size: 0.8rem;
            color: var(--text-muted);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .news-recommend {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: calc(var(--nav-height) + var(--spacing));
        }
        .news-recommend h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: var(--spacing);
            padding-bottom: var(--spacing-sm);
            border-bottom: 2px solid var(--accent);
        }
        .news-recommend .rec-item {
            display: flex;
            gap: var(--spacing-sm);
            padding: var(--spacing-sm) 0;
            border-bottom: 1px solid var(--border-light);
            align-items: flex-start;
        }
        .news-recommend .rec-item:last-child {
            border-bottom: none;
        }
        .news-recommend .rec-thumb {
            width: 72px;
            height: 56px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--bg);
        }
        .news-recommend .rec-info a {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-title);
            line-height: 1.4;
            text-decoration: none;
        }
        .news-recommend .rec-info a:hover {
            color: var(--accent);
            text-decoration: underline;
        }
        .news-recommend .rec-info .rec-meta {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 4px;
        }
        @media (max-width: 767px) {
            .news-layout {
                grid-template-columns: 1fr;
            }
            .news-recommend {
                position: static;
                margin-top: var(--spacing);
            }
        }

        /* ========== 服务卡片 ========== */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
        }
        .service-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .service-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .service-card .card-icon {
            width: 56px;
            height: 56px;
            margin: 0 auto var(--spacing);
            background: var(--accent-light);
            border-radius: var(--radius-lg);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .service-card .card-icon svg {
            width: 28px;
            height: 28px;
            stroke: var(--secondary);
            fill: none;
            stroke-width: 2;
        }
        .service-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: var(--spacing-xs);
        }
        .service-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        @media (max-width: 1023px) {
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .service-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== 使用场景 ========== */
        .scene-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-2xl);
            align-items: center;
            margin-bottom: var(--spacing-3xl);
        }
        .scene-row:last-child {
            margin-bottom: 0;
        }
        .scene-row.reverse {
            direction: rtl;
        }
        .scene-row.reverse .scene-text {
            direction: ltr;
        }
        .scene-image {
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            aspect-ratio: 4/3;
            background: var(--bg);
        }
        .scene-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .scene-text h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: var(--spacing-sm);
        }
        .scene-text p {
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: var(--spacing);
        }
        .tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-xs);
        }
        .tag {
            display: inline-block;
            padding: 6px 14px;
            background: #E2E8F0;
            color: var(--secondary);
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            transition: all var(--transition);
        }
        .tag:hover {
            background: var(--accent);
            color: #ffffff;
        }
        @media (max-width: 767px) {
            .scene-row {
                grid-template-columns: 1fr;
                gap: var(--spacing);
                margin-bottom: var(--spacing-xl);
            }
            .scene-row.reverse {
                direction: ltr;
            }
            .scene-text h3 {
                font-size: 1.25rem;
            }
        }

        /* ========== 横向滚动卡片 ========== */
        .scroll-wrapper {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scroll-snap-type: x mandatory;
            padding-bottom: var(--spacing-sm);
            margin: 0 calc(-1 * var(--spacing));
            padding-left: var(--spacing);
            padding-right: var(--spacing);
        }
        .scroll-wrapper::-webkit-scrollbar {
            height: 6px;
        }
        .scroll-wrapper::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 3px;
        }
        .scroll-track {
            display: flex;
            gap: var(--spacing);
            min-width: max-content;
        }
        .scroll-card {
            flex: 0 0 340px;
            scroll-snap-align: start;
            background: #ffffff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
            border-left: 4px solid var(--accent);
            display: flex;
            flex-direction: column;
        }
        .scroll-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .scroll-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .scroll-card .card-body {
            padding: var(--spacing);
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .scroll-card .card-body h4 {
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 6px;
            font-size: 1.05rem;
        }
        .scroll-card .card-body .card-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
            flex: 1;
        }
        .stars {
            display: flex;
            gap: 2px;
            margin-top: var(--spacing-xs);
        }
        .stars .star {
            width: 16px;
            height: 16px;
            fill: #F59E0B;
            color: #F59E0B;
        }
        .stars .star.empty {
            fill: #E2E8F0;
            color: #E2E8F0;
        }
        @media (max-width: 767px) {
            .scroll-card {
                flex: 0 0 280px;
            }
            .scroll-card img {
                height: 150px;
            }
        }

        /* ========== 价格套餐 ========== */
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
            align-items: stretch;
        }
        .pricing-card {
            background: #ffffff;
            border-radius: var(--radius-xl);
            padding: var(--spacing-xl);
            box-shadow: var(--shadow-sm);
            text-align: center;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            position: relative;
        }
        .pricing-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .pricing-card.featured {
            background: var(--primary);
            color: #ffffff;
            box-shadow: var(--shadow-lg);
            transform: scale(1.03);
            z-index: 2;
        }
        .pricing-card.featured:hover {
            transform: scale(1.03) translateY(-2px);
        }
        .pricing-card .plan-name {
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: var(--spacing-xs);
            color: var(--text-title);
        }
        .pricing-card.featured .plan-name {
            color: #ffffff;
        }
        .pricing-card .plan-price {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            margin: var(--spacing-sm) 0;
        }
        .pricing-card.featured .plan-price {
            color: #ffffff;
        }
        .pricing-card .plan-price .currency {
            font-size: 1.4rem;
            font-weight: 600;
        }
        .pricing-card .plan-original {
            text-decoration: line-through;
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: var(--spacing);
        }
        .pricing-card.featured .plan-original {
            color: rgba(255, 255, 255, 0.6);
        }
        .pricing-card .plan-features {
            list-style: none;
            text-align: left;
            flex: 1;
            margin-bottom: var(--spacing);
        }
        .pricing-card .plan-features li {
            padding: 8px 0;
            font-size: 0.9rem;
            color: var(--text-body);
            border-bottom: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .pricing-card.featured .plan-features li {
            color: rgba(255, 255, 255, 0.9);
            border-bottom-color: rgba(255, 255, 255, 0.15);
        }
        .pricing-card .plan-features li::before {
            content: '✓';
            color: var(--secondary);
            font-weight: 700;
            flex-shrink: 0;
        }
        .pricing-card.featured .plan-features li::before {
            color: #ffffff;
        }
        .pricing-card .btn {
            margin-top: auto;
        }
        .pricing-card.featured .btn {
            background: #ffffff;
            color: var(--primary);
            border-color: #ffffff;
        }
        .pricing-card.featured .btn:hover {
            background: var(--accent-light);
            color: var(--primary);
        }
        @media (max-width: 1023px) {
            .pricing-grid {
                grid-template-columns: 1fr;
                max-width: 420px;
                margin: 0 auto;
            }
            .pricing-card.featured {
                transform: none;
            }
            .pricing-card.featured:hover {
                transform: translateY(-2px);
            }
        }

        /* ========== CTA 横幅 ========== */
        .cta-banner {
            background: var(--primary);
            text-align: center;
            padding: var(--spacing-3xl) var(--spacing);
        }
        .cta-banner h2 {
            color: #ffffff;
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: var(--spacing);
        }
        .cta-banner p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.05rem;
            margin-bottom: var(--spacing-lg);
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        @media (max-width: 767px) {
            .cta-banner h2 {
                font-size: 1.4rem;
            }
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            background: #ffffff;
            border-radius: var(--radius-lg);
            margin-bottom: var(--spacing-sm);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            border: 1px solid var(--border-light);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px var(--spacing);
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-title);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-sm);
            cursor: pointer;
            transition: background var(--transition);
            background: #ffffff;
        }
        .faq-question:hover {
            background: #f8fafc;
        }
        .faq-question .faq-arrow {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            transition: transform var(--transition);
            stroke: var(--text-muted);
            fill: none;
            stroke-width: 2;
        }
        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
        }
        .faq-answer-inner {
            padding: 0 var(--spacing) 18px var(--spacing);
            color: var(--text-muted);
            line-height: 1.7;
            font-size: 0.95rem;
        }
        @media (max-width: 767px) {
            .faq-question {
                font-size: 0.9rem;
                padding: 14px var(--spacing-sm);
            }
            .faq-answer-inner {
                padding: 0 var(--spacing-sm) 14px var(--spacing-sm);
            }
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #0B1C3A;
            color: #94A3B8;
            padding: var(--spacing-3xl) 0 var(--spacing-xl);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: var(--spacing-xl);
        }
        .footer-col h4 {
            color: #ffffff;
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: var(--spacing);
        }
        .footer-col p {
            font-size: 0.9rem;
            line-height: 1.6;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: #94A3B8;
            font-size: 0.9rem;
            text-decoration: none;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: #ffffff;
            text-decoration: underline;
        }
        .footer-logo {
            font-size: 1.15rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: var(--spacing-sm);
            display: inline-block;
        }
        .footer-bottom {
            margin-top: var(--spacing-xl);
            padding-top: var(--spacing);
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            text-align: center;
            font-size: 0.8rem;
            color: #64748B;
        }
        @media (max-width: 767px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing);
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== 辅助 ========== */
        .text-center {
            text-align: center;
        }
        .mt-0 {
            margin-top: 0;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }