/* roulang page: index */
:root {
            --bg-page: #F8FAFC;
            --bg-card: #FFFFFF;
            --color-primary: #2563EB;
            --color-primary-hover: #1D4ED8;
            --color-primary-soft: #DBEAFE;
            --color-secondary: #0EA5E9;
            --color-accent: #F59E0B;
            --color-accent-soft: #FEF3C7;
            --color-text: #0F172A;
            --color-text-secondary: #475569;
            --color-border: #E2E8F0;
            --color-success: #10B981;
            --color-warning: #F59E0B;
            --color-danger: #EF4444;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 999px;
            --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
            --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.06);
            --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.12);
            --shadow-focus: 0 0 0 4px rgba(37, 99, 235, 0.3);
            --font-sans: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --section-padding-desktop: 72px 24px;
            --section-padding-tablet: 56px 20px;
            --section-padding-mobile: 40px 16px;
            --transition-fast: 0.2s ease;
            --transition-medium: 0.3s ease;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--bg-page);
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }

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

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

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

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

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

        /* ========== 导航 ========== */
        .site-header {
            position: fixed;
            top: 16px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1000;
            width: auto;
            max-width: calc(100% - 32px);
        }

        .nav-capsule {
            display: flex;
            align-items: center;
            gap: 24px;
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-full);
            padding: 8px 20px;
            box-shadow: var(--shadow-md);
            transition: box-shadow var(--transition-fast);
        }

        .nav-capsule:hover {
            box-shadow: var(--shadow-lg);
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 800;
            font-size: 16px;
            color: var(--color-text);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }

        .nav-logo .logo-dot {
            display: inline-block;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--color-primary);
            flex-shrink: 0;
            position: relative;
        }

        .nav-logo .logo-dot::after {
            content: '';
            position: absolute;
            top: -3px;
            right: -3px;
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: var(--color-accent);
        }

        .nav-logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }

        .nav-logo-text .logo-brand {
            font-size: 15px;
            font-weight: 800;
            color: var(--color-text);
        }

        .nav-logo-text .logo-sub {
            font-size: 11px;
            font-weight: 500;
            color: var(--color-text-secondary);
            letter-spacing: 0.04em;
        }

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

        .nav-links li a {
            display: inline-block;
            padding: 8px 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            border-radius: var(--radius-full);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

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

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

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            padding: 8px;
            cursor: pointer;
            border-radius: var(--radius-sm);
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--color-text);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        /* ========== Hero ========== */
        .hero {
            position: relative;
            padding: 140px 24px 72px;
            background: linear-gradient(180deg, #F0F4FF 0%, var(--bg-page) 100%);
            overflow: hidden;
        }

        .hero-geo-decoration {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            pointer-events: none;
            z-index: 0;
        }

        .hero-geo-decoration .geo-dot {
            position: absolute;
            border-radius: 50%;
            background: rgba(37, 99, 235, 0.08);
        }

        .hero-geo-decoration .geo-dot:nth-child(1) {
            width: 220px;
            height: 220px;
            top: -60px;
            right: 8%;
        }

        .hero-geo-decoration .geo-dot:nth-child(2) {
            width: 120px;
            height: 120px;
            bottom: 30px;
            left: 4%;
            background: rgba(14, 165, 233, 0.06);
        }

        .hero-geo-decoration .geo-triangle {
            position: absolute;
            width: 0;
            height: 0;
            border-left: 18px solid transparent;
            border-right: 18px solid transparent;
            border-bottom: 32px solid rgba(245, 158, 11, 0.1);
            top: 140px;
            left: 12%;
            transform: rotate(15deg);
        }

        .hero-geo-decoration .geo-square {
            position: absolute;
            width: 32px;
            height: 32px;
            border: 3px solid rgba(37, 99, 235, 0.1);
            border-radius: 6px;
            top: 200px;
            right: 18%;
            transform: rotate(25deg);
        }

        .hero .container {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .hero-countdown-bar {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            background: var(--color-accent-soft);
            border: 1px solid #FDE68A;
            border-radius: var(--radius-full);
            padding: 10px 20px;
            margin-bottom: 24px;
            font-size: 14px;
            font-weight: 600;
            color: #92400E;
        }

        .hero-countdown-bar .countdown-timer {
            display: flex;
            gap: 6px;
            font-weight: 800;
            font-variant-numeric: tabular-nums;
            color: #B45309;
        }

        .hero-countdown-bar .countdown-timer span {
            background: #FFFFFF;
            border-radius: var(--radius-sm);
            padding: 2px 8px;
            font-size: 15px;
            box-shadow: var(--shadow-sm);
        }

        .hero-content h1 {
            font-size: 38px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--color-text);
            margin-bottom: 20px;
            letter-spacing: -0.01em;
            position: relative;
        }

        .hero-content h1::before {
            content: '';
            display: inline-block;
            width: 12px;
            height: 12px;
            background: var(--color-accent);
            border-radius: 3px;
            margin-right: 12px;
            transform: rotate(10deg);
        }

        .hero-content .hero-desc {
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text-secondary);
            margin-bottom: 28px;
            max-width: 540px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }

        .hero-actions .hero-stats {
            display: flex;
            gap: 24px;
            margin-left: 12px;
        }

        .hero-actions .hero-stats .stat-item {
            text-align: center;
        }

        .hero-actions .hero-stats .stat-num {
            font-size: 24px;
            font-weight: 800;
            color: var(--color-primary);
            display: block;
            line-height: 1.2;
        }

        .hero-actions .hero-stats .stat-label {
            font-size: 12px;
            color: var(--color-text-secondary);
        }

        .hero-visual {
            position: relative;
            z-index: 1;
        }

        .hero-feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-xl);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-lg);
            overflow: hidden;
            transition: transform var(--transition-medium), box-shadow var(--transition-medium);
        }

        .hero-feature-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 48px rgba(15, 23, 42, 0.15);
        }

        .hero-feature-card .feature-card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/10;
        }

        .hero-feature-card .feature-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform var(--transition-medium);
        }

        .hero-feature-card:hover .feature-card-img img {
            transform: scale(1.03);
        }

        .hero-feature-card .feature-card-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--color-danger);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: var(--radius-full);
            letter-spacing: 0.04em;
        }

        .hero-feature-card .feature-card-body {
            padding: 20px 24px 24px;
        }

        .hero-feature-card .feature-card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
        }

        .hero-feature-card .feature-card-body p {
            font-size: 14px;
            color: var(--color-text-secondary);
            margin-bottom: 16px;
            line-height: 1.6;
        }

        .hero-feature-card .feature-card-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 16px;
        }

        .hero-feature-card .feature-card-tags .tag {
            background: var(--color-primary-soft);
            color: var(--color-primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: var(--radius-full);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-full);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.2;
            transition: all var(--transition-fast);
            text-decoration: none;
        }

        .btn-primary {
            background: var(--color-primary);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--color-primary-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
        }

        .btn-primary:focus {
            outline: none;
            box-shadow: var(--shadow-focus);
        }

        .btn-outline {
            background: transparent;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
        }

        .btn-outline:hover {
            background: var(--color-primary-soft);
            color: var(--color-primary-hover);
            transform: translateY(-2px);
        }

        .btn-outline:focus {
            outline: none;
            box-shadow: var(--shadow-focus);
        }

        .btn-accent {
            background: var(--color-accent);
            color: #fff;
        }

        .btn-accent:hover {
            background: #D97706;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(245, 158, 11, 0.35);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }

        .btn-block {
            width: 100%;
            justify-content: center;
        }

        /* ========== Section 通用 ========== */
        section {
            padding: var(--section-padding-desktop);
        }

        section:nth-child(even) {
            background: var(--bg-card);
        }

        section:nth-child(odd) {
            background: var(--bg-page);
        }

        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 48px;
        }

        .section-header .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            background: var(--color-primary-soft);
            padding: 4px 14px;
            border-radius: var(--radius-full);
            margin-bottom: 12px;
            letter-spacing: 0.04em;
        }

        .section-header h2 {
            font-size: 30px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--color-text);
            margin-bottom: 16px;
            position: relative;
        }

        .section-header h2 .geo-mark {
            display: inline-block;
            width: 10px;
            height: 10px;
            background: var(--color-accent);
            border-radius: 2px;
            margin: 0 6px;
            transform: rotate(12deg);
        }

        .section-header p {
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text-secondary);
        }

        .section-grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .section-grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .section-grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        /* ========== 卡片通用 ========== */
        .card {
            background: var(--bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-fast);
            position: relative;
            overflow: hidden;
        }

        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--color-primary-soft);
        }

        .card .card-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 16px;
            background: var(--color-primary-soft);
            color: var(--color-primary);
        }

        .card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .card p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text-secondary);
        }

        /* ========== 痛点卡片带 ========== */
        .pain-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }

        .pain-chip {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-full);
            padding: 10px 18px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-fast);
        }

        .pain-chip:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .pain-chip .chip-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--color-accent);
            flex-shrink: 0;
        }

        /* ========== 步骤卡片 ========== */
        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-fast);
            position: relative;
            text-align: center;
        }

        .step-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--color-primary-soft);
        }

        .step-card .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            position: relative;
        }

        .step-card .step-number::after {
            content: '';
            position: absolute;
            top: -4px;
            right: -4px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--color-accent);
            border: 2px solid #fff;
        }

        .step-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
        }

        .step-card p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ========== 数据统计条 ========== */
        .stats-bar {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-block {
            background: var(--bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-fast);
            position: relative;
            overflow: hidden;
        }

        .stat-block::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        }

        .stat-block:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }

        .stat-block .stat-num {
            font-size: 36px;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1.2;
            display: block;
            margin-bottom: 6px;
            font-variant-numeric: tabular-nums;
        }

        .stat-block .stat-label {
            font-size: 14px;
            color: var(--color-text-secondary);
            font-weight: 500;
        }

        /* ========== 证言卡片 ========== */
        .testimonial-card {
            background: var(--bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-fast);
            position: relative;
        }

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

        .testimonial-card .quote-mark {
            font-size: 40px;
            line-height: 1;
            color: var(--color-primary-soft);
            font-weight: 800;
            display: block;
            margin-bottom: 12px;
        }

        .testimonial-card .stars {
            color: var(--color-accent);
            font-size: 15px;
            letter-spacing: 2px;
            margin-bottom: 12px;
        }

        .testimonial-card .testimonial-text {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text-secondary);
            margin-bottom: 16px;
        }

        .testimonial-card .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .testimonial-card .testimonial-avatar {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--color-primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 15px;
            color: var(--color-primary);
            flex-shrink: 0;
        }

        .testimonial-card .testimonial-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text);
        }

        .testimonial-card .testimonial-role {
            font-size: 12px;
            color: var(--color-text-secondary);
        }

        /* ========== 列表卡片（封面图） ========== */
        .cover-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .cover-card {
            background: var(--bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-fast);
            display: flex;
            flex-direction: column;
        }

        .cover-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--color-primary-soft);
        }

        .cover-card .cover-img {
            aspect-ratio: 16/10;
            overflow: hidden;
            position: relative;
        }

        .cover-card .cover-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform var(--transition-medium);
        }

        .cover-card:hover .cover-img img {
            transform: scale(1.05);
        }

        .cover-card .cover-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .cover-card .cover-body h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
            line-height: 1.45;
        }

        .cover-card .cover-body p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin-bottom: 12px;
            flex: 1;
        }

        .cover-card .cover-tags {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
            margin-bottom: 12px;
        }

        .cover-card .cover-tags .tag {
            background: var(--color-primary-soft);
            color: var(--color-primary);
            font-size: 11px;
            font-weight: 600;
            padding: 3px 9px;
            border-radius: var(--radius-full);
        }

        .cover-card .cover-tags .tag-accent {
            background: var(--color-accent-soft);
            color: #92400E;
        }

        .cover-card .cover-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: var(--color-text-secondary);
            border-top: 1px solid var(--color-border);
            padding-top: 12px;
        }

        /* ========== 参数表 ========== */
        .spec-table-wrapper {
            background: var(--bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-md);
        }

        .spec-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
        }

        .spec-table th, .spec-table td {
            padding: 14px 16px;
            border-bottom: 1px solid var(--color-border);
            text-align: left;
        }

        .spec-table th {
            font-weight: 700;
            color: var(--color-text);
            background: var(--color-primary-soft);
            border-radius: var(--radius-sm) var(--radius-sm) 0 0;
            font-size: 13px;
            letter-spacing: 0.03em;
        }

        .spec-table td {
            color: var(--color-text-secondary);
        }

        .spec-table td:first-child {
            font-weight: 600;
            color: var(--color-text);
        }

        .spec-table tr:last-child td {
            border-bottom: none;
        }

        /* ========== 表单 ========== */
        .form-wrapper {
            background: var(--color-primary-soft);
            border: 1px solid var(--color-primary-soft);
            border-radius: var(--radius-xl);
            padding: 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .form-wrapper::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: rgba(37, 99, 235, 0.06);
        }

        .form-wrapper::after {
            content: '';
            position: absolute;
            bottom: -30px;
            left: -30px;
            width: 120px;
            height: 120px;
            border-radius: 50%;
            background: rgba(245, 158, 11, 0.08);
        }

        .form-wrapper .form-inner {
            position: relative;
            z-index: 1;
            max-width: 520px;
            margin: 0 auto;
        }

        .form-wrapper h2 {
            font-size: 28px;
            font-weight: 800;
            color: var(--color-text);
            margin-bottom: 12px;
        }

        .form-wrapper p {
            font-size: 15px;
            color: var(--color-text-secondary);
            margin-bottom: 24px;
            line-height: 1.7;
        }

        .form-group {
            display: flex;
            gap: 12px;
            max-width: 440px;
            margin: 0 auto;
        }

        .form-group input[type="email"] {
            flex: 1;
            padding: 14px 20px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-full);
            font-size: 15px;
            background: #fff;
            color: var(--color-text);
            outline: none;
            transition: all var(--transition-fast);
            min-width: 0;
        }

        .form-group input[type="email"]:focus {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-focus);
        }

        .form-group input[type="email"]::placeholder {
            color: #94A3B8;
        }

        .form-note {
            font-size: 12px;
            color: var(--color-text-secondary);
            margin-top: 14px;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-fast);
        }

        .faq-item.active {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-md);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: all var(--transition-fast);
        }

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

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--color-primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            font-weight: 800;
            font-size: 14px;
            transition: transform var(--transition-fast);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-medium), padding var(--transition-medium);
            padding: 0 22px;
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.75;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 22px 20px;
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: var(--color-primary);
            color: #fff;
        }

        /* ========== 分类入口 ========== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .category-entry {
            background: var(--bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-fast);
            display: block;
            color: var(--color-text);
            text-decoration: none;
            position: relative;
            overflow: hidden;
        }

        .category-entry::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        }

        .category-entry:nth-child(1)::before {
            background: var(--color-primary);
        }

        .category-entry:nth-child(2)::before {
            background: var(--color-secondary);
        }

        .category-entry:nth-child(3)::before {
            background: var(--color-accent);
        }

        .category-entry:nth-child(4)::before {
            background: var(--color-success);
        }

        .category-entry:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            color: var(--color-text);
        }

        .category-entry .cat-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            background: var(--color-primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 800;
            margin: 0 auto 14px;
            color: var(--color-primary);
        }

        .category-entry h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 6px;
        }

        .category-entry p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #F1F5F9;
            border-top: 1px solid var(--color-border);
            padding: 48px 24px 28px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }

        .footer-brand .footer-logo {
            font-size: 20px;
            font-weight: 800;
            color: var(--color-text);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-brand .footer-logo .logo-dot {
            display: inline-block;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--color-primary);
        }

        .footer-brand p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }

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

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

        .footer-col ul li a {
            font-size: 13px;
            color: var(--color-text-secondary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            border-top: 1px solid var(--color-border);
            padding-top: 20px;
            text-align: center;
            font-size: 12px;
            color: var(--color-text-secondary);
        }

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

        .news-card {
            display: flex;
            gap: 16px;
            background: var(--bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 16px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-fast);
            text-decoration: none;
            color: var(--color-text);
        }

        .news-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--color-primary-soft);
        }

        .news-card .news-thumb {
            width: 100px;
            height: 70px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
        }

        .news-card .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-sm);
        }

        .news-card .news-info {
            flex: 1;
            min-width: 0;
        }

        .news-card .news-info h3 {
            font-size: 14px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 6px;
            line-height: 1.45;
        }

        .news-card .news-info p {
            font-size: 12px;
            color: var(--color-text-secondary);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card .news-date {
            font-size: 11px;
            color: #94A3B8;
            margin-top: 6px;
            display: block;
        }

        /* ========== 场景卡片 ========== */
        .scene-card {
            background: var(--bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-fast);
            text-align: center;
        }

        .scene-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--color-primary-soft);
        }

        .scene-card .scene-icon {
            width: 50px;
            height: 50px;
            border-radius: var(--radius-md);
            background: var(--color-accent-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 700;
            margin: 0 auto 14px;
            color: #92400E;
        }

        .scene-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
        }

        .scene-card p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        /* ========== 合作伙伴 ========== */
        .partner-wall {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
            align-items: center;
        }

        .partner-badge {
            background: var(--bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-full);
            padding: 10px 22px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-secondary);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-fast);
        }

        .partner-badge:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .hero .container {
                grid-template-columns: 1fr;
                gap: 32px;
                text-align: center;
            }

            .hero-content .hero-desc {
                margin-left: auto;
                margin-right: auto;
            }

            .hero-actions {
                justify-content: center;
            }

            .hero-actions .hero-stats {
                margin-left: 0;
            }

            .section-grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }

            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
            }

            .cover-list {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                top: 10px;
                max-width: calc(100% - 20px);
            }

            .nav-capsule {
                padding: 6px 12px;
                gap: 10px;
                flex-wrap: wrap;
            }

            .nav-logo-text .logo-brand {
                font-size: 13px;
            }

            .nav-logo-text .logo-sub {
                font-size: 10px;
            }

            .nav-links {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                padding: 8px 0;
            }

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

            .nav-links li a {
                display: block;
                padding: 10px 14px;
                text-align: center;
            }

            .nav-toggle {
                display: flex;
                margin-left: auto;
            }

            .hero {
                padding: 110px 16px 48px;
            }

            .hero-content h1 {
                font-size: 28px;
            }

            .hero-countdown-bar {
                font-size: 12px;
                padding: 8px 14px;
                flex-wrap: wrap;
                justify-content: center;
            }

            .hero-countdown-bar .countdown-timer span {
                font-size: 13px;
                padding: 2px 6px;
            }

            .hero-actions {
                flex-direction: column;
                gap: 10px;
            }

            .hero-actions .hero-stats {
                gap: 16px;
                margin-left: 0;
                flex-wrap: wrap;
                justify-content: center;
            }

            section {
                padding: var(--section-padding-mobile);
            }

            .section-header h2 {
                font-size: 24px;
            }

            .section-grid-3 {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .section-grid-4 {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .section-grid-2 {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .stats-bar {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .stat-block .stat-num {
                font-size: 28px;
            }

            .cover-list {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .category-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }

            .news-list {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .form-group {
                flex-direction: column;
                gap: 10px;
            }

            .form-group input[type="email"] {
                width: 100%;
            }

            .form-wrapper {
                padding: 28px 18px;
            }

            .form-wrapper h2 {
                font-size: 24px;
            }

            .spec-table-wrapper {
                padding: 20px;
                overflow-x: auto;
            }

            .spec-table {
                font-size: 12px;
                min-width: 500px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
                text-align: center;
            }

            .footer-brand p {
                margin: 0 auto;
            }

            .footer-col h4 {
                text-align: center;
            }

            .footer-col ul li {
                text-align: center;
            }

            .pain-strip {
                flex-direction: column;
                align-items: center;
            }

            .news-card .news-thumb {
                width: 80px;
                height: 56px;
            }

            .btn {
                padding: 10px 20px;
                font-size: 14px;
                min-height: 44px;
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 24px;
            }

            .hero-content .hero-desc {
                font-size: 14px;
            }

            .stats-bar {
                grid-template-columns: 1fr;
            }

            .stat-block .stat-num {
                font-size: 24px;
            }

            .section-header h2 {
                font-size: 21px;
            }

            .nav-logo-text .logo-brand {
                font-size: 12px;
            }

            .hero-countdown-bar {
                font-size: 11px;
                gap: 6px;
            }

            .hero-countdown-bar .countdown-timer {
                gap: 3px;
            }

            .hero-countdown-bar .countdown-timer span {
                font-size: 12px;
                padding: 2px 5px;
            }

            .hero-actions .hero-stats {
                gap: 12px;
            }

            .hero-actions .hero-stats .stat-num {
                font-size: 20px;
            }

            .form-wrapper h2 {
                font-size: 21px;
            }

            .card, .step-card, .testimonial-card, .scene-card {
                padding: 18px;
            }
        }

/* roulang page: category1 */
/* roulang page: category1 */
:root {
  --bg-page: #F8FAFC;
  --bg-card: #FFFFFF;
  --color-primary: #2563EB;
  --color-primary-hover: #1D4ED8;
  --color-primary-soft: #DBEAFE;
  --color-secondary: #0EA5E9;
  --color-accent: #F59E0B;
  --color-accent-soft: #FEF3C7;
  --color-text: #0F172A;
  --color-text-secondary: #475569;
  --color-border: #E2E8F0;
  --color-success: #10B981;
  --color-warning: #F59E0B;
  --color-danger: #EF4444;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 999px;
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.12);
  --shadow-focus: 0 0 0 4px rgba(37, 99, 235, 0.3);
  --font-sans: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --section-padding-desktop: 72px 24px;
  --section-padding-tablet: 56px 20px;
  --section-padding-mobile: 40px 16px;
  --transition-fast: 0.2s ease;
  --transition-medium: 0.3s ease;
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--bg-page);
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-md);
}

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

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

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

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

ul,
ol {
  list-style: none;
}

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

/* ========== 导航 ========== */
.site-header {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  width: auto;
  max-width: calc(100% - 32px);
}

.nav-capsule {
  display: flex;
  align-items: center;
  gap: 24px;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 8px 20px;
  box-shadow: var(--shadow-md);
  transition: box-shadow var(--transition-fast);
}

.nav-capsule:hover {
  box-shadow: var(--shadow-lg);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 16px;
  color: var(--color-text);
  white-space: nowrap;
  letter-spacing: 0.02em;
}

.nav-logo .logo-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-primary);
  flex-shrink: 0;
  position: relative;
}

.nav-logo .logo-dot::after {
  content: '';
  position: absolute;
  top: -3px;
  right: -3px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-accent);
}

.nav-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.nav-logo-text .logo-brand {
  font-size: 15px;
  font-weight: 800;
  color: var(--color-text);
}

.nav-logo-text .logo-sub {
  font-size: 11px;
  font-weight: 500;
  color: var(--color-text-secondary);
  letter-spacing: 0.04em;
}

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

.nav-links li a {
  display: inline-block;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

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

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
  border-radius: var(--radius-sm);
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* ========== 分类页特有 ========== */
.page-banner {
  background: linear-gradient(135deg, var(--color-primary-soft) 0%, #F0F7FF 50%, var(--bg-card) 100%);
  padding: 120px 24px 64px;
  position: relative;
  overflow: hidden;
}

.page-banner::before {
  content: '';
  position: absolute;
  top: -40px;
  right: -30px;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.page-banner::after {
  content: '';
  position: absolute;
  bottom: -50px;
  left: 20%;
  width: 160px;
  height: 160px;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.08) 0%, transparent 70%);
  border-radius: 50%;
}

.page-banner .container {
  position: relative;
  z-index: 2;
}

.page-banner-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.page-banner-text {
  flex: 1 1 55%;
  min-width: 280px;
}

.page-banner-text h1 {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.2;
  color: var(--color-text);
  margin-bottom: 12px;
  letter-spacing: 0.03em;
}

.page-banner-text p {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 560px;
}

.page-banner-visual {
  flex: 1 1 35%;
  min-width: 260px;
  max-width: 400px;
}

.page-banner-visual img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

/* 筛选条 */
.filter-bar {
  background: var(--bg-card);
  border-bottom: 1px solid var(--color-border);
  padding: 16px 24px;
  position: sticky;
  top: 76px;
  z-index: 500;
}

.filter-bar-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.filter-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

.filter-chip {
  display: inline-block;
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  cursor: pointer;
  white-space: nowrap;
}

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

.filter-chip.active {
  color: #fff;
  background: var(--color-primary);
  border-color: var(--color-primary);
  font-weight: 600;
}

.filter-sort {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--color-text-secondary);
}

.filter-sort button {
  padding: 6px 12px;
  font-size: 13px;
  color: var(--color-text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.filter-sort button:hover,
.filter-sort button.active {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
}

/* 通用板块 */
.section {
  padding: var(--section-padding-desktop);
}

.section-soft {
  background: var(--bg-card);
}

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

.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.section-header h2 {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
}

.section-header .section-title-icon {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.section-header .section-title-icon::before {
  content: '';
  width: 12px;
  height: 12px;
  background: var(--color-accent);
  border-radius: 3px;
  transform: rotate(45deg);
  flex-shrink: 0;
}

.section-header .section-sub {
  font-size: 15px;
  color: var(--color-text-secondary);
  margin-top: 6px;
  max-width: 580px;
}

.section-header .section-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.section-header .section-link:hover {
  color: var(--color-primary-hover);
}

/* 卡片列表主体 */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.card-grid-card {
  background: var(--bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-fast);
}

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

.card-grid-card .card-thumb {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.card-grid-card .card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
  transition: transform var(--transition-fast);
}

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

.card-grid-card .card-thumb .card-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--color-primary);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  letter-spacing: 0.02em;
}

.card-grid-card .card-body {
  padding: 18px 20px 20px;
}

.card-grid-card .card-body h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--color-text);
  margin-bottom: 8px;
}

.card-grid-card .card-body .card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.card-grid-card .card-body .card-meta span {
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--bg-page);
  padding: 3px 10px;
  border-radius: var(--radius-full);
}

.card-grid-card .card-body .card-meta span.tag-jp {
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

.card-grid-card .card-body .card-meta span.tag-zh {
  background: var(--color-accent-soft);
  color: #B45309;
}

.card-grid-card .card-body .card-excerpt {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-grid-card .card-body .card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--color-text-secondary);
  border-top: 1px solid var(--color-border);
  padding-top: 12px;
}

.card-grid-card .card-body .card-footer a {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

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

/* 热门榜单 */
.hot-rank-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.hot-rank-item {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 14px 18px;
  transition: all var(--transition-fast);
}

.hot-rank-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: var(--color-primary);
}

.hot-rank-index {
  font-size: 28px;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  flex-shrink: 0;
  min-width: 38px;
  text-align: center;
}

.hot-rank-item:nth-child(1) .hot-rank-index,
.hot-rank-item:nth-child(2) .hot-rank-index {
  color: var(--color-accent);
}

.hot-rank-content {
  flex: 1;
  min-width: 0;
}

.hot-rank-content h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.hot-rank-content .hot-rank-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 12px;
  color: var(--color-text-secondary);
}

.hot-rank-content .hot-rank-meta span {
  background: var(--bg-page);
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

/* 订阅块 */
.subscribe-box {
  background: var(--color-primary);
  border-radius: var(--radius-xl);
  padding: 36px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  box-shadow: var(--shadow-md);
}

.subscribe-text {
  flex: 1 1 50%;
  min-width: 260px;
}

.subscribe-text h2 {
  font-size: 24px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.subscribe-text p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.6;
}

.subscribe-form {
  flex: 1 1 35%;
  min-width: 260px;
  display: flex;
  gap: 10px;
}

.subscribe-form input {
  flex: 1;
  padding: 12px 18px;
  font-size: 14px;
  color: var(--color-text);
  background: #fff;
  border: none;
  border-radius: var(--radius-full);
  outline: none;
}

.subscribe-form input:focus {
  box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.4);
}

.subscribe-form button {
  padding: 12px 24px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: var(--color-accent);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.subscribe-form button:hover {
  background: #D97706;
  transform: translateY(-1px);
}

/* 数据统计 */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

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

.stat-card .stat-number {
  font-size: 36px;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.1;
  margin-bottom: 6px;
}

.stat-card .stat-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
}

/* 步骤 */
.steps-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  counter-reset: step;
}

.step-item {
  background: var(--bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  position: relative;
  transition: all var(--transition-fast);
}

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

.step-item .step-num {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}

.step-item h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.step-item p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* FAQ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: 12px;
  overflow: hidden;
  transition: all var(--transition-fast);
}

.faq-item.open {
  background: var(--color-primary-soft);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 20px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  transition: color var(--transition-fast);
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  font-family: inherit;
}

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

.faq-question .faq-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  position: relative;
  transition: transform var(--transition-fast);
}

.faq-question .faq-icon::before,
.faq-question .faq-icon::after {
  content: '';
  position: absolute;
  background: var(--color-primary);
  border-radius: 2px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.faq-question .faq-icon::before {
  width: 14px;
  height: 2px;
}

.faq-question .faq-icon::after {
  width: 2px;
  height: 14px;
  transition: transform var(--transition-fast);
}

.faq-item.open .faq-question .faq-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-medium);
}

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

.faq-answer p {
  padding: 0 20px 18px;
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* 相关分类 */
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.related-card {
  background: var(--bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.related-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
  border-color: var(--color-primary);
}

.related-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
}

.related-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.related-card a {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  align-self: flex-start;
}

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

/* 轻量CTA */
.cta-light {
  text-align: center;
  background: var(--color-primary-soft);
  border-radius: var(--radius-xl);
  padding: 48px 32px;
  position: relative;
  overflow: hidden;
}

.cta-light::before {
  content: '';
  position: absolute;
  top: -30px;
  right: -30px;
  width: 100px;
  height: 100px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.cta-light h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 10px;
}

.cta-light p {
  font-size: 15px;
  color: var(--color-text-secondary);
  max-width: 520px;
  margin: 0 auto 20px;
  line-height: 1.7;
}

.cta-light .cta-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary-soft);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.btn-primary:focus,
.btn-outline:focus {
  outline: none;
  box-shadow: var(--shadow-focus);
}

/* 页脚 */
.site-footer {
  background: #fff;
  border-top: 1px solid var(--color-border);
  padding: 48px 24px 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 32px;
}

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 18px;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 12px;
}

.footer-brand .footer-logo .logo-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-primary);
  flex-shrink: 0;
}

.footer-brand p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 14px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-col ul li a {
  font-size: 14px;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 20px;
  text-align: center;
  font-size: 13px;
  color: var(--color-text-secondary);
}

/* 响应式 */
@media (max-width: 1024px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .hot-rank-list {
    grid-template-columns: 1fr;
  }

  .stats-row {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps-row {
    grid-template-columns: repeat(2, 1fr);
  }

  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 768px) {
  .site-header {
    max-width: calc(100% - 20px);
    top: 10px;
  }

  .nav-capsule {
    flex-wrap: wrap;
    gap: 12px;
    border-radius: var(--radius-lg);
    padding: 12px 16px;
  }

  .nav-links {
    display: none;
    width: 100%;
    flex-direction: column;
    gap: 4px;
    padding-top: 8px;
  }

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

  .nav-toggle {
    display: flex;
    margin-left: auto;
  }

  .page-banner {
    padding: 100px 16px 48px;
  }

  .page-banner-inner {
    flex-direction: column;
    text-align: left;
    align-items: flex-start;
  }

  .page-banner-text h1 {
    font-size: 28px;
  }

  .page-banner-text p {
    font-size: 15px;
  }

  .filter-bar {
    top: 74px;
    padding: 12px 16px;
  }

  .section {
    padding: var(--section-padding-mobile);
  }

  .section-header h2 {
    font-size: 24px;
  }

  .card-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .hot-rank-list {
    grid-template-columns: 1fr;
  }

  .stats-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .steps-row {
    grid-template-columns: 1fr;
  }

  .related-grid {
    grid-template-columns: 1fr;
  }

  .subscribe-box {
    flex-direction: column;
    padding: 28px 22px;
    text-align: left;
  }

  .subscribe-form {
    flex-direction: column;
  }

  .subscribe-form button {
    width: 100%;
    min-height: 44px;
  }

  .cta-light {
    padding: 36px 20px;
  }

  .cta-light h2 {
    font-size: 22px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

@media (max-width: 520px) {
  .page-banner {
    padding-top: 96px;
  }

  .page-banner-text h1 {
    font-size: 22px;
  }

  .filter-bar-inner {
    gap: 8px;
  }

  .filter-sort {
    margin-left: 0;
    width: 100%;
  }

  .stats-row {
    grid-template-columns: 1fr;
  }

  .hot-rank-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
  }
}