/* roulang page: index */
:root {
            --primary: #1487B8;
            --primary-dark: #0E5E7D;
            --primary-deep: #0E3A4A;
            --accent: #F6A723;
            --accent-soft: #FFF7E8;
            --bg: #F5F9FC;
            --card-bg: #FFFFFF;
            --text: #1F2D3D;
            --text-secondary: #5A6B7A;
            --border: #E3ECF2;
            --danger: #D64A3A;
            --radius-lg: 16px;
            --radius-md: 12px;
            --shadow-sm: 0 4px 20px rgba(15,70,100,0.06);
            --shadow-hover: 0 12px 28px rgba(15,70,100,0.10);
            --max-width: 1200px;
            --space-xl: 96px;
            --space-lg: 72px;
            --space-md: 48px;
            --font-family: -apple-system, "PingFang SC", "HarmonicOS Sans SC", "Microsoft YaHei", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-family);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease;
        }
        a:hover {
            color: var(--primary-dark);
        }
        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            background: none;
            outline: none;
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: var(--space-xl) 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header .eyebrow {
            display: inline-block;
            background: rgba(20,135,184,.10);
            color: var(--primary);
            border-radius: 999px;
            padding: 4px 16px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 12px;
            letter-spacing: 1px;
        }
        .section-header h2 {
            font-size: 34px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.4;
            margin-bottom: 8px;
        }
        .section-header p {
            color: var(--text-secondary);
            font-size: 16px;
            max-width: 680px;
            margin: 0 auto;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 48px;
            padding: 0 24px;
            border-radius: var(--radius-md);
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all .25s ease;
            border: 1px solid transparent;
            line-height: 1;
            white-space: nowrap;
        }
        .btn i {
            font-size: 16px;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--primary-deep);
            border-color: var(--accent);
        }
        .btn-primary:hover {
            background: #E89E1C;
            color: var(--primary-deep);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(246,167,35,.25);
        }
        .btn-secondary {
            background: var(--card-bg);
            color: var(--primary-dark);
            border-color: var(--primary);
        }
        .btn-secondary:hover {
            background: rgba(20,135,184,.06);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .btn-large {
            height: 54px;
            padding: 0 36px;
            font-size: 17px;
            border-radius: 14px;
        }
        .btn-gradient {
            background: linear-gradient(135deg, #F6A723 0%, #F5B84B 100%);
            color: var(--primary-deep);
            border: none;
        }
        .btn-gradient:hover {
            background: linear-gradient(135deg, #E89E1C 0%, #F0B040 100%);
            box-shadow: 0 10px 24px rgba(246,167,35,.3);
            color: var(--primary-deep);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--primary-dark);
            outline-offset: 2px;
            box-shadow: 0 0 0 4px rgba(20,135,184,.15);
        }
        /* ===== Top Announcement ===== */
        .top-bar {
            height: 36px;
            background: var(--primary-dark);
            color: #F0F8FC;
            font-size: 13px;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            white-space: nowrap;
            text-overflow: ellipsis;
            padding: 0 16px;
            letter-spacing: .3px;
        }
        .top-bar span {
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            max-width: 100%;
        }
        .top-bar i {
            margin-right: 8px;
            color: var(--accent);
        }
        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255,255,255,.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: 0 4px 16px rgba(15,70,100,.06);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .logo a {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary-dark);
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
        }
        .logo-badge {
            display: inline-block;
            background: var(--accent);
            color: var(--primary-deep);
            font-size: 11px;
            font-weight: 700;
            padding: 2px 10px;
            border-radius: 999px;
            letter-spacing: .5px;
            line-height: 18px;
        }
        .header-search {
            flex: 1;
            max-width: 420px;
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 999px;
            height: 42px;
            padding: 0 6px 0 18px;
            transition: border-color .2s ease;
        }
        .header-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(20,135,184,.1);
        }
        .header-search input {
            flex: 1;
            background: transparent;
            border: none;
            color: var(--text);
            font-size: 14px;
            height: 100%;
            outline: none;
            padding: 0;
        }
        .header-search input::placeholder {
            color: #9AAAB8;
        }
        .header-search button {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: background .2s ease;
            flex-shrink: 0;
        }
        .header-search button:hover {
            background: var(--primary-dark);
        }
        .header-download-btn {
            flex-shrink: 0;
        }
        .header-download-btn .btn {
            height: 42px;
            padding: 0 20px;
            font-size: 14px;
            border-radius: 999px;
        }
        .nav-channel {
            border-top: 1px solid var(--border);
            background: rgba(255,255,255,.95);
            height: 56px;
            display: flex;
            align-items: center;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .nav-channel::-webkit-scrollbar {
            display: none;
        }
        .nav-channel-list {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
            padding: 0;
            margin: 0;
            height: 100%;
        }
        .nav-channel-list li {
            height: 100%;
        }
        .nav-channel-list a {
            display: flex;
            align-items: center;
            height: 100%;
            font-size: 15px;
            color: var(--text-secondary);
            font-weight: 500;
            position: relative;
            white-space: nowrap;
            text-decoration: none;
        }
        .nav-channel-list a:hover {
            color: var(--primary);
        }
        .nav-channel-list a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-channel-list a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--accent);
            border-radius: 3px 3px 0 0;
        }
        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 75vh;
            max-height: 900px;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, #E8F4FB 0%, #D5EDF7 50%, #F0F7FA 100%);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: .5;
            z-index: 0;
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to right, rgba(245,249,252,.92) 20%, rgba(245,249,252,.6) 55%, rgba(245,249,252,.35) 100%);
        }
        .hero-bg-pattern {
            position: absolute;
            inset: 0;
            background-image: linear-gradient(rgba(20,135,184,.04) 1px, transparent 1px), linear-gradient(90deg, rgba(20,135,184,.04) 1px, transparent 1px);
            background-size: 40px 40px;
            z-index: 0;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 48px;
            padding-top: 48px;
            padding-bottom: 48px;
            width: 100%;
        }
        .hero-content {
            flex: 1.1;
            max-width: 580px;
        }
        .hero-content .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255,255,255,.7);
            border: 1px solid rgba(20,135,184,.2);
            color: var(--primary-dark);
            font-size: 13px;
            font-weight: 600;
            border-radius: 999px;
            padding: 6px 16px;
            margin-bottom: 24px;
            box-shadow: var(--shadow-sm);
        }
        .hero-content .hero-badge i {
            color: var(--accent);
        }
        .hero-content h1 {
            font-size: 38px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 20px;
            letter-spacing: -1px;
        }
        .hero-content h1 .highlight {
            color: var(--primary);
            position: relative;
        }
        .hero-content .hero-desc {
            font-size: 17px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 28px;
            max-width: 480px;
        }
        .hero-content .hero-desc strong {
            color: var(--text);
            font-weight: 600;
        }
        .hero-ctas {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 18px;
        }
        .hero-safe-tip {
            font-size: 13px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .hero-safe-tip i {
            color: var(--primary);
        }
        .hero-card-wrap {
            flex: 0 0 360px;
            max-width: 360px;
        }
        .download-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-hover);
            padding: 32px 28px;
            border: 1px solid rgba(227,236,242,.7);
            position: relative;
            overflow: hidden;
        }
        .download-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--accent) 0%, #FFC069 50%, var(--accent) 100%);
        }
        .download-card-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
        }
        .download-card-header .dc-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
        }
        .dc-badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: rgba(20,135,184,.08);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 999px;
        }
        .dc-badge i {
            font-size: 12px;
        }
        .download-card-info {
            margin-bottom: 20px;
        }
        .dc-info-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 0;
            border-bottom: 1px dashed var(--border);
            font-size: 14px;
        }
        .dc-info-row:last-child {
            border-bottom: none;
        }
        .dc-info-label {
            color: var(--text-secondary);
        }
        .dc-info-value {
            color: var(--text);
            font-weight: 500;
        }
        .dc-info-value .verify-hash {
            font-family: monospace;
            font-size: 12px;
            background: var(--bg);
            padding: 2px 8px;
            border-radius: 4px;
            color: var(--primary-dark);
        }
        .download-card .btn {
            width: 100%;
            margin-bottom: 14px;
        }
        .qr-section {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 14px;
            background: var(--bg);
            border-radius: var(--radius-md);
        }
        .qr-placeholder {
            width: 96px;
            height: 96px;
            background: #fff;
            border-radius: 8px;
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 12px;
            text-align: center;
            padding: 6px;
            flex-shrink: 0;
            position: relative;
        }
        .qr-placeholder::before {
            content: '';
            position: absolute;
            inset: 8px;
            border-radius: 4px;
            background-image: linear-gradient(to right, rgba(20,135,184,.15) 1px, transparent 1px), linear-gradient(to bottom, rgba(20,135,184,.15) 1px, transparent 1px);
            background-size: 12px 12px;
        }
        .qr-placeholder span {
            position: relative;
            z-index: 1;
            background: rgba(255,255,255,.85);
            border-radius: 4px;
            padding: 2px 4px;
            font-size: 11px;
        }
        .qr-text {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            flex: 1;
        }
        .qr-text strong {
            color: var(--text);
        }
        /* ===== Trust Stats Bar ===== */
        .trust-bar {
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            padding: 40px 0;
            box-shadow: var(--shadow-sm);
        }
        .trust-bar .grid-x {
            row-gap: 24px;
        }
        .trust-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 0 24px;
        }
        .trust-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(20,135,184,.08);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            flex-shrink: 0;
        }
        .trust-text .t-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
        }
        .trust-text .t-sub {
            font-size: 13px;
            color: var(--text-secondary);
        }
        /* ===== Feature Blocks ===== */
        .features-section {
            padding: var(--space-xl) 0;
        }
        .feature-block {
            display: flex;
            align-items: center;
            gap: 48px;
            margin-bottom: 72px;
        }
        .feature-block:last-child {
            margin-bottom: 0;
        }
        .feature-block.reverse {
            flex-direction: row-reverse;
        }
        .feature-media {
            flex: 1;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
            position: relative;
        }
        .feature-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 320px;
            transition: transform .4s ease;
        }
        .feature-media:hover img {
            transform: scale(1.03);
        }
        .feature-media .media-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(255,255,255,.9);
            backdrop-filter: blur(4px);
            color: var(--primary-dark);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 999px;
            box-shadow: var(--shadow-sm);
        }
        .feature-content {
            flex: 1;
            padding: 20px 0;
        }
        .feature-content .feature-tag {
            display: inline-block;
            background: var(--accent-soft);
            color: var(--primary-deep);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            margin-bottom: 16px;
        }
        .feature-content h3 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 14px;
            line-height: 1.4;
        }
        .feature-content p {
            color: var(--text-secondary);
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .feature-content ul {
            list-style: none;
            padding: 0;
            margin: 0 0 20px 0;
        }
        .feature-content ul li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            margin-bottom: 10px;
            font-size: 15px;
            color: var(--text);
        }
        .feature-content ul li i {
            color: var(--primary);
            margin-top: 4px;
            font-size: 14px;
        }
        .feature-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
            border-bottom: 2px solid transparent;
            padding-bottom: 2px;
            transition: all .2s ease;
        }
        .feature-link:hover {
            border-bottom-color: var(--primary);
            color: var(--primary-dark);
        }
        /* ===== Benefits Section ===== */
        .benefits-section {
            background: var(--card-bg);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: var(--space-xl) 0;
        }
        .benefit-card {
            background: var(--bg);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            height: 100%;
            position: relative;
            border: 1px solid var(--border);
            transition: all .3s ease;
            overflow: hidden;
        }
        .benefit-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--accent);
            border-radius: 0 0 4px 4px;
            opacity: 0;
            transition: opacity .3s ease;
        }
        .benefit-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(20,135,184,.15);
        }
        .benefit-card:hover::before {
            opacity: 1;
        }
        .benefit-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(20,135,184,.08);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 18px;
        }
        .benefit-card .b-badge {
            position: absolute;
            top: 20px;
            right: 20px;
            background: var(--accent-soft);
            color: var(--primary-deep);
            font-size: 11px;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: 999px;
        }
        .benefit-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 10px;
        }
        .benefit-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        /* ===== Steps Section ===== */
        .steps-section {
            padding: var(--space-xl) 0;
        }
        .steps-wrapper {
            background: linear-gradient(135deg, rgba(20,135,184,.05) 0%, rgba(20,135,184,.01) 100%);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
        }
        .step-item {
            position: relative;
            text-align: left;
            padding: 0 20px;
        }
        .step-item .step-node {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 20px;
            position: relative;
            z-index: 2;
            box-shadow: 0 0 0 6px rgba(20,135,184,.1);
        }
        .step-item.done .step-node {
            background: var(--accent);
            box-shadow: 0 0 0 6px rgba(246,167,35,.12);
        }
        .step-item:not(.done):not(.current) .step-node {
            background: #B0C4D4;
            box-shadow: 0 0 0 6px rgba(176,196,212,.15);
        }
        .step-item .step-status {
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 1px;
            color: var(--text-secondary);
            text-transform: uppercase;
            margin-bottom: 6px;
        }
        .step-item h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .step-connector {
            position: absolute;
            top: 28px;
            left: calc(50% + 28px);
            width: calc(100% - 56px);
            height: 2px;
            background: var(--border);
            border-radius: 2px;
        }
        .step-connector.done-line {
            background: var(--accent);
            height: 3px;
        }
        /* ===== CTA Section ===== */
        .cta-section {
            margin: 0 0 var(--space-xl) 0;
        }
        .cta-box {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            border-radius: 20px;
            padding: 56px 48px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255,255,255,.06);
        }
        .cta-box::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -40px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: rgba(255,255,255,.04);
        }
        .cta-box h2 {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 10px;
            position: relative;
            z-index: 1;
        }
        .cta-box p {
            font-size: 16px;
            color: rgba(255,255,255,.85);
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
        }
        .cta-box .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }
        .cta-box .btn-outline-light {
            background: transparent;
            border: 1px solid rgba(255,255,255,.6);
            color: #fff;
        }
        .cta-box .btn-outline-light:hover {
            background: rgba(255,255,255,.1);
            color: #fff;
        }
        .cta-box .cta-safe-note {
            position: relative;
            z-index: 1;
            font-size: 13px;
            color: rgba(255,255,255,.6);
            margin-top: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
        }
        /* ===== News Section ===== */
        .news-section {
            padding: var(--space-xl) 0;
            background: var(--card-bg);
            border-top: 1px solid var(--border);
        }
        .news-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 32px;
        }
        .news-header h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text);
            margin: 0;
        }
        .news-header .news-more {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all .2s ease;
        }
        .news-header .news-more:hover {
            color: var(--primary-dark);
            gap: 10px;
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .news-card {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 16px;
            transition: all .3s ease;
        }
        .news-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(20,135,184,.2);
            transform: translateY(-2px);
        }
        .news-thumb {
            flex-shrink: 0;
            width: 120px;
            height: 80px;
            border-radius: 8px;
            overflow: hidden;
            position: relative;
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .35s ease;
        }
        .news-card:hover .news-thumb img {
            transform: scale(1.05);
        }
        .news-thumb::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15,70,100,.08), transparent);
        }
        .news-body {
            flex: 1;
            min-width: 0;
        }
        .news-body h3 {
            margin: 0 0 6px 0;
            font-size: 16px;
            font-weight: 600;
            line-height: 1.4;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
        }
        .news-body h3 a {
            color: var(--text);
            transition: color .2s ease;
        }
        .news-body h3 a:hover {
            color: var(--primary);
        }
        .news-body .news-excerpt {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            margin-bottom: 8px;
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-secondary);
        }
        .news-meta .tag {
            display: inline-block;
            background: rgba(20,135,184,.08);
            color: var(--primary);
            font-weight: 500;
            padding: 2px 10px;
            border-radius: 999px;
            font-size: 12px;
        }
        .news-meta time {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .news-meta time i {
            font-size: 12px;
        }
        .news-detail-link {
            flex-shrink: 0;
            margin-left: 8px;
            font-size: 14px;
            color: var(--primary);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .news-detail-link:hover {
            color: var(--primary-dark);
        }
        .empty-state {
            text-align: center;
            padding: 48px 20px;
            background: var(--bg);
            border: 1px dashed var(--border);
            border-radius: var(--radius-lg);
        }
        .empty-state .empty-icon {
            font-size: 40px;
            color: #B0C4D4;
            margin-bottom: 16px;
        }
        .empty-state p {
            color: var(--text-secondary);
            font-size: 15px;
        }
        /* ===== FAQ ===== */
        .faq-section {
            padding: var(--space-xl) 0;
        }
        .faq-list {
            max-width: 960px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            transition: all .3s ease;
        }
        .faq-item.active {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .faq-item.active::before {
            content: '';
            display: block;
            height: 3px;
            width: 48px;
            background: var(--accent);
            border-radius: 0 3px 0 0;
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            cursor: pointer;
            user-select: none;
            gap: 16px;
        }
        .faq-question h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin: 0;
            flex: 1;
            line-height: 1.5;
        }
        .faq-toggle {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--bg);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 16px;
            transition: all .3s ease;
        }
        .faq-item.active .faq-toggle {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
        }
        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            border-top: 1px dashed var(--border);
            padding-top: 16px;
            margin-top: 0;
            margin-left: 24px;
            margin-right: 24px;
            padding-left: 0;
            padding-right: 0;
        }
        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,.8);
            padding: 64px 0 24px;
            font-size: 14px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 14px;
        }
        .footer-brand .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
        }
        .footer-brand .footer-badge {
            background: var(--accent);
            color: var(--primary-deep);
            font-size: 11px;
            font-weight: 600;
            padding: 2px 8px;
            border-radius: 999px;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255,255,255,.6);
            margin-bottom: 8px;
        }
        .footer-heading {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-heading::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 24px;
            height: 2px;
            background: var(--accent);
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: rgba(255,255,255,.65);
            transition: all .2s ease;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-disclaimer {
            padding: 32px 0 24px;
            border-top: 1px solid rgba(255,255,255,.12);
            margin-top: 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255,255,255,.45);
        }
        .footer-disclaimer .disclaimer-text {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
        }
        /* ===== Mobile Download Bar ===== */
        .mobile-download-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: rgba(255,255,255,.97);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-top: 1px solid var(--border);
            display: none;
            align-items: center;
            padding: 0 16px;
            z-index: 99;
            box-shadow: 0 -4px 16px rgba(15,70,100,.05);
        }
        .mobile-download-bar .mdb-info {
            flex: 1;
            min-width: 0;
        }
        .mobile-download-bar .mdb-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .mobile-download-bar .mdb-sub {
            font-size: 12px;
            color: var(--text-secondary);
        }
        .mobile-download-bar .btn {
            height: 40px;
            padding: 0 16px;
            font-size: 13px;
            border-radius: 10px;
            flex-shrink: 0;
            margin-left: 12px;
        }
        .mobile-download-bar .mdb-close {
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            cursor: pointer;
            margin-left: 4px;
            flex-shrink: 0;
            border-radius: 50%;
            transition: all .2s ease;
        }
        .mobile-download-bar .mdb-close:hover {
            background: var(--bg);
            color: var(--text);
        }
        body.has-mdb {
            padding-bottom: 64px;
        }
        /* ===== Responsive ===== */
        @media screen and (max-width: 1023px) {
            .hero .container {
                flex-direction: column;
                gap: 40px;
            }
            .hero-content {
                max-width: 100%;
                text-align: center;
            }
            .hero-content .hero-desc {
                margin-left: auto;
                margin-right: auto;
            }
            .hero-ctas {
                justify-content: center;
            }
            .hero-safe-tip {
                justify-content: center;
            }
            .hero-card-wrap {
                flex: none;
                max-width: 400px;
                width: 100%;
                margin: 0 auto;
            }
            .feature-block,
            .feature-block.reverse {
                flex-direction: column;
                gap: 28px;
            }
            .feature-media {
                width: 100%;
            }
            .feature-content {
                width: 100%;
                padding: 0;
                text-align: left;
            }
            .trust-item {
                padding: 0 12px;
            }
            .step-connector {
                display: none;
            }
            .step-item {
                text-align: center;
                padding: 0 8px;
            }
            .step-item .step-node {
                margin: 0 auto 16px;
            }
            .header-search {
                max-width: 280px;
            }
            .footer-disclaimer {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
        }
        @media screen and (max-width: 767px) {
            :root {
                --space-xl: 56px;
                --space-lg: 40px;
                --space-md: 32px;
            }
            .section {
                padding: var(--space-xl) 0;
            }
            .header-top {
                height: 64px;
            }
            .logo a {
                font-size: 17px;
            }
            .header-search {
                display: none;
            }
            .header-download-btn .btn {
                display: none;
            }
            .nav-channel {
                height: 50px;
            }
            .nav-channel-list {
                gap: 20px;
                padding: 0 16px;
            }
            .nav-channel-list a {
                font-size: 14px;
            }
            .hero {
                min-height: auto;
                padding: 48px 0 56px;
                max-height: none;
            }
            .hero-content h1 {
                font-size: 28px;
                line-height: 1.35;
                letter-spacing: 0;
            }
            .hero-content .hero-desc {
                font-size: 15px;
            }
            .hero-ctas {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-ctas .btn {
                width: 100%;
            }
            .hero-card-wrap {
                max-width: 100%;
            }
            .download-card {
                padding: 24px 20px;
            }
            .qr-placeholder {
                width: 80px;
                height: 80px;
            }
            .trust-item {
                padding: 8px 0;
                justify-content: center;
            }
            .trust-bar .grid-x {
                gap: 16px;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .feature-content h3 {
                font-size: 22px;
            }
            .benefit-card {
                padding: 24px 20px;
            }
            .steps-wrapper {
                padding: 32px 20px;
            }
            .step-item {
                text-align: left;
                padding: 0 0 0 0;
                margin-bottom: 28px;
                display: flex;
                gap: 16px;
                align-items: flex-start;
            }
            .step-item:last-child {
                margin-bottom: 0;
            }
            .step-item .step-node {
                width: 48px;
                height: 48px;
                font-size: 17px;
                margin: 0;
                flex-shrink: 0;
            }
            .step-item .step-content {
                flex: 1;
            }
            .step-item .step-status {
                margin-bottom: 4px;
            }
            .cta-box {
                padding: 40px 24px;
            }
            .cta-box h2 {
                font-size: 24px;
            }
            .cta-actions {
                flex-direction: column;
            }
            .cta-actions .btn {
                width: 100%;
            }
            .news-card {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .news-thumb {
                width: 100%;
                height: 120px;
            }
            .news-body h3 {
                -webkit-line-clamp: 2;
            }
            .news-body .news-excerpt {
                -webkit-line-clamp: 2;
            }
            .news-detail-link {
                margin-left: 0;
            }
            .faq-question {
                padding: 16px 18px;
            }
            .faq-question h3 {
                font-size: 15px;
            }
            .footer-brand {
                justify-content: center;
            }
            .footer-desc {
                text-align: center;
            }
            .footer-heading {
                text-align: center;
            }
            .footer-heading::after {
                left: 50%;
                transform: translateX(-50%);
            }
            .footer-links {
                text-align: center;
            }
            .footer-links li {
                display: inline-block;
                margin: 0 10px 10px;
            }
            .footer-links a:hover {
                padding-left: 0;
            }
            .footer-disclaimer {
                margin-top: 32px;
                padding-top: 24px;
            }
            .mobile-download-bar {
                display: flex;
            }
            .mobile-download-bar.hidden {
                display: none;
            }
        }
        @media screen and (max-width: 520px) {
            html {
                font-size: 15px;
            }
            .hero-content h1 {
                font-size: 24px;
            }
            .hero-content .hero-desc {
                font-size: 14px;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .news-header h2 {
                font-size: 22px;
            }
            .feature-content h3 {
                font-size: 20px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1487B8;
            --deep: #0E5E7D;
            --accent: #F6A723;
            --accent-text: #0E3A4A;
            --bg: #F5F9FC;
            --card-bg: #FFFFFF;
            --text: #1F2D3D;
            --text-light: #5A6B7A;
            --border: #E3ECF2;
            --danger: #D64A3A;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-pill: 999px;
            --shadow-sm: 0 4px 20px rgba(15, 70, 100, 0.06);
            --shadow-hover: 0 12px 28px rgba(15, 70, 100, 0.10);
            --gap-section: 96px;
            --gap-section-md: 72px;
            --gap-section-sm: 48px;
            --transition: all 0.25s ease;
        }

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

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonicOS Sans SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

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

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

        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--deep);
            outline-offset: 2px;
            box-shadow: 0 0 0 4px rgba(20, 135, 184, 0.18);
        }

        ul,
        ol {
            list-style: none;
        }

        button {
            background: none;
            border: none;
            cursor: pointer;
            font-family: inherit;
        }

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

        .grid-container {
            max-width: 1200px;
        }

        /* ===== 顶部公告条 ===== */
        .site-notice {
            background: var(--deep);
            color: #E8F4F9;
            font-size: 13px;
            line-height: 36px;
            height: 36px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            padding: 0 24px;
            text-align: center;
            letter-spacing: 0.02em;
        }

        .site-notice i {
            margin-right: 6px;
            color: var(--accent);
        }

        /* ===== 双层导航 ===== */
        .site-header {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 16px rgba(15, 70, 100, 0.05);
        }

        .header-top {
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }

        .logo a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            white-space: nowrap;
            text-decoration: none;
        }

        .logo a:hover {
            color: var(--text);
        }

        .logo i {
            color: var(--primary);
            font-size: 22px;
        }

        .logo-badge {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            font-size: 11px;
            line-height: 1;
            padding: 4px 8px;
            border-radius: var(--radius-pill);
            letter-spacing: 0.04em;
            font-weight: 600;
        }

        .header-search {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-pill);
            padding: 0 4px 0 16px;
            max-width: 320px;
            flex: 1;
            height: 40px;
            transition: var(--transition);
        }

        .header-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(20, 135, 184, 0.10);
            background: #fff;
        }

        .header-search input {
            flex: 1;
            border: none;
            outline: none;
            background: transparent;
            font-size: 14px;
            color: var(--text);
            min-width: 0;
        }

        .header-search button {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
            flex-shrink: 0;
        }

        .header-search button:hover {
            background: var(--deep);
        }

        .header-download-btn .btn {
            white-space: nowrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 48px;
            padding: 0 24px;
            border-radius: var(--radius-md);
            font-size: 16px;
            font-weight: 600;
            line-height: 1;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            border: 1px solid transparent;
            white-space: nowrap;
        }

        .btn i {
            font-size: 15px;
        }

        .btn-primary {
            background: var(--accent);
            color: var(--accent-text);
        }

        .btn-primary:hover {
            background: #e09a1f;
            color: var(--accent-text);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(246, 167, 35, 0.25);
        }

        .btn-secondary {
            background: #fff;
            color: var(--deep);
            border-color: rgba(14, 94, 125, 0.4);
        }

        .btn-secondary:hover {
            background: rgba(20, 135, 184, 0.06);
            border-color: var(--deep);
            color: var(--deep);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        .btn-large {
            height: 52px;
            padding: 0 36px;
            font-size: 17px;
        }

        /* 频道行 */
        .nav-channel {
            background: #fff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            position: relative;
        }

        .nav-channel .container {
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .nav-channel .container::-webkit-scrollbar {
            display: none;
        }

        .nav-channel-list {
            display: flex;
            gap: 4px;
            padding: 0;
            margin: 0;
            min-width: max-content;
        }

        .nav-channel-list a {
            display: inline-flex;
            align-items: center;
            height: 56px;
            padding: 0 12px;
            font-size: 15px;
            color: var(--text-light);
            font-weight: 500;
            position: relative;
            text-decoration: none;
            white-space: nowrap;
            transition: var(--transition);
        }

        .nav-channel-list a:hover {
            color: var(--primary);
        }

        .nav-channel-list a.active {
            color: var(--primary);
            font-weight: 600;
        }

        .nav-channel-list a.active::after {
            content: '';
            position: absolute;
            left: 12px;
            right: 12px;
            bottom: 0;
            height: 3px;
            border-radius: 3px 3px 0 0;
            background: var(--accent);
        }

        /* ===== 分类页 Hero ===== */
        .cat-hero {
            position: relative;
            min-height: 320px;
            display: flex;
            align-items: center;
            background:
                linear-gradient(120deg, rgba(20, 135, 184, 0.18) 0%, rgba(245, 249, 252, 0.60) 50%, rgba(245, 249, 252, 0.90) 100%),
                url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
            border-bottom: 1px solid var(--border);
            padding: 56px 0 48px;
        }

        .cat-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 0h40v1H0zM0 39h40v1H0zM0 0v40h1V0zM39 0v40h1V0z' fill='%231487B8' fill-opacity='0.04'/%3E%3C/svg%3E");
            pointer-events: none;
        }

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

        .cat-hero-inner {
            max-width: 760px;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.95);
            border: 1px solid rgba(20, 135, 184, 0.20);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            margin-bottom: 18px;
            box-shadow: var(--shadow-sm);
        }

        .hero-tag i {
            font-size: 12px;
        }

        .cat-hero h1 {
            font-size: 34px;
            line-height: 1.25;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 14px;
            letter-spacing: 0.01em;
        }

        .cat-hero h1 span {
            color: var(--primary);
        }

        .cat-hero .hero-sub {
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-light);
            max-width: 620px;
            margin-bottom: 0;
        }

        /* ===== 概览数据 ===== */
        .hero-data {
            padding: 32px 0;
            background: #fff;
            border-bottom: 1px solid var(--border);
        }

        .hero-data .grid-x {
            row-gap: 24px;
        }

        .data-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 8px 0;
        }

        .data-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(20, 135, 184, 0.10);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 20px;
            flex-shrink: 0;
        }

        .data-info .data-num {
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.2;
        }

        .data-info .data-label {
            font-size: 13px;
            color: var(--text-light);
            margin-top: 2px;
        }

        /* ===== 图文介绍区块 ===== */
        .intro-section {
            padding: var(--gap-section) 0 40px;
        }

        .section-head {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 56px;
        }

        .section-tag {
            display: inline-block;
            background: rgba(20, 135, 184, 0.10);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .section-head h2 {
            font-size: 28px;
            line-height: 1.35;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
        }

        .section-head .section-desc {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.7;
            margin: 0;
        }

        .intro-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 40px;
            margin-bottom: 32px;
            transition: var(--transition);
        }

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

        .intro-card .block-media {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
        }

        .intro-card .block-media img {
            width: 100%;
            height: 280px;
            object-fit: cover;
            border-radius: var(--radius-md);
            transition: transform 0.4s ease;
        }

        .intro-card:hover .block-media img {
            transform: scale(1.02);
        }

        .intro-card .block-media::after {
            content: '';
            position: absolute;
            inset: 0;
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: var(--radius-md);
            pointer-events: none;
        }

        .intro-card .block-content {
            padding: 0 8px;
        }

        .intro-card .block-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(20, 135, 184, 0.08);
            padding: 5px 12px;
            border-radius: var(--radius-pill);
            margin-bottom: 16px;
        }

        .intro-card .block-tag i {
            font-size: 12px;
        }

        .intro-card h3 {
            font-size: 22px;
            line-height: 1.4;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
        }

        .intro-card .block-desc {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.75;
            margin-bottom: 18px;
        }

        .check-list {
            margin: 0;
            padding: 0;
            display: grid;
            gap: 10px;
        }

        .check-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 15px;
            color: var(--text);
            line-height: 1.6;
        }

        .check-list li i {
            color: var(--primary);
            font-size: 14px;
            margin-top: 4px;
            flex-shrink: 0;
        }

        .block-foot-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 20px;
            font-size: 14px;
            font-weight: 600;
            color: var(--deep);
            text-decoration: none;
            padding-bottom: 2px;
            border-bottom: 1px solid transparent;
            transition: var(--transition);
        }

        .block-foot-link:hover {
            border-bottom-color: var(--deep);
            gap: 10px;
        }

        /* ===== 下载入口 CTA ===== */
        .download-cta {
            background: linear-gradient(135deg, rgba(20, 135, 184, 0.10), rgba(246, 167, 35, 0.08));
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            margin-bottom: var(--gap-section);
        }

        .download-cta h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
        }

        .download-cta .cta-desc {
            font-size: 15px;
            color: var(--text-light);
            margin-bottom: 28px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .cta-safe-tip {
            margin-top: 20px;
            font-size: 13px;
            color: var(--text-light);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
        }

        .cta-safe-tip i {
            color: var(--primary);
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 0 0 var(--gap-section);
        }

        .faq-container {
            max-width: 860px;
            margin: 0 auto;
            display: grid;
            gap: 14px;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }

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

        .faq-item.active {
            border-left: 3px solid var(--accent);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            transition: var(--transition);
            cursor: pointer;
        }

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

        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(20, 135, 184, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--primary);
            flex-shrink: 0;
            transition: transform 0.25s ease;
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: rgba(20, 135, 184, 0.15);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.25s ease, padding 0.25s ease;
            padding: 0 24px;
            color: var(--text-light);
            font-size: 14px;
            line-height: 1.75;
        }

        .faq-item.active .faq-answer {
            max-height: 260px;
            padding: 0 24px 20px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--deep);
            color: rgba(255, 255, 255, 0.85);
            padding: 56px 0 32px;
            margin-top: 0;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 16px;
        }

        .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
        }

        .footer-badge {
            display: inline-block;
            background: var(--accent);
            color: var(--accent-text);
            font-size: 11px;
            font-weight: 700;
            padding: 3px 8px;
            border-radius: var(--radius-pill);
            line-height: 1;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.70);
            margin-bottom: 12px;
            max-width: 340px;
        }

        .footer-heading {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-links {
            display: grid;
            gap: 8px;
            margin: 0;
            padding: 0;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.70);
            font-size: 14px;
            text-decoration: none;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-disclaimer {
            border-top: 1px solid rgba(255, 255, 255, 0.10);
            margin-top: 40px;
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.50);
        }

        .disclaimer-text {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .disclaimer-text i {
            color: var(--accent);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1023px) {
            .intro-card {
                padding: 28px;
            }

            .intro-card .block-media img {
                height: 220px;
            }

            .cat-hero h1 {
                font-size: 30px;
            }

            .download-cta {
                padding: 44px 28px;
            }
        }

        @media (max-width: 767px) {
            :root {
                --gap-section: 48px;
                --gap-section-md: 40px;
            }

            .container {
                padding: 0 16px;
            }

            .site-notice {
                font-size: 12px;
                line-height: 36px;
                padding: 0 16px;
            }

            .header-top {
                height: 64px;
            }

            .logo a {
                font-size: 17px;
            }

            .logo i {
                font-size: 18px;
            }

            .logo-badge {
                font-size: 10px;
                padding: 3px 6px;
            }

            .header-search {
                display: none;
            }

            .header-download-btn .btn {
                height: 42px;
                padding: 0 16px;
                font-size: 14px;
            }

            .nav-channel-list a {
                height: 50px;
                font-size: 14px;
                padding: 0 10px;
            }

            .cat-hero {
                min-height: 300px;
                padding: 40px 0 36px;
            }

            .cat-hero h1 {
                font-size: 24px;
                line-height: 1.35;
            }

            .cat-hero .hero-sub {
                font-size: 14px;
                line-height: 1.7;
            }

            .hero-tag {
                font-size: 12px;
                padding: 5px 12px;
            }

            .data-item {
                padding: 4px 0;
            }

            .data-icon {
                width: 44px;
                height: 44px;
                font-size: 17px;
            }

            .data-info .data-num {
                font-size: 18px;
            }

            .section-head {
                margin-bottom: 36px;
            }

            .section-head h2 {
                font-size: 22px;
                line-height: 1.4;
            }

            .section-head .section-desc {
                font-size: 14px;
            }

            .intro-card {
                padding: 20px;
                margin-bottom: 20px;
            }

            .intro-card .block-media img {
                height: 180px;
            }

            .intro-card h3 {
                font-size: 19px;
                margin-bottom: 10px;
            }

            .intro-card .block-desc {
                font-size: 14px;
                line-height: 1.65;
            }

            .check-list li {
                font-size: 14px;
            }

            .download-cta {
                padding: 36px 20px;
                border-radius: var(--radius-md);
            }

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

            .download-cta .cta-desc {
                font-size: 14px;
            }

            .cta-buttons .btn {
                width: 100%;
            }

            .faq-question {
                font-size: 15px;
                padding: 18px 16px;
            }

            .faq-answer {
                font-size: 13px;
                line-height: 1.7;
            }

            .faq-item.active .faq-answer {
                padding: 0 16px 18px;
            }

            .site-footer {
                padding: 40px 0 24px;
            }

            .footer-disclaimer {
                flex-direction: column;
                align-items: flex-start;
                margin-top: 24px;
                padding-top: 16px;
            }

            .footer-links a:hover {
                padding-left: 0;
            }
        }

        @media (max-width: 520px) {
            .cat-hero h1 {
                font-size: 21px;
            }

            .cat-hero .hero-sub {
                font-size: 13px;
            }

            .hero-tag {
                font-size: 11px;
                margin-bottom: 12px;
            }

            .logo-badge {
                display: none;
            }

            .header-download-btn .btn {
                padding: 0 12px;
                font-size: 13px;
            }

            .intro-card .block-media img {
                height: 160px;
            }

            .download-cta .cta-buttons {
                gap: 12px;
            }
        }

/* roulang page: article */
:root {
            --primary: #1487B8;
            --deep-sea: #0E5E7D;
            --accent: #F6A723;
            --accent-text: #0E3A4A;
            --bg: #F5F9FC;
            --card-bg: #FFFFFF;
            --text-main: #1F2D3D;
            --text-sub: #5A6B7A;
            --border: #E3ECF2;
            --danger: #D64A3A;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-sm: 0 4px 20px rgba(15, 70, 100, 0.06);
            --shadow-hover: 0 12px 28px rgba(15, 70, 100, 0.10);
            --font-stack: -apple-system, "PingFang SC", "HarmonicOS Sans SC", "Microsoft YaHei", sans-serif;
            --container-w: 1200px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-stack);
            background: var(--bg);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .25s ease;
        }
        a:hover {
            color: var(--deep-sea);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul,
        ol {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        .container {
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 0 24px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 48px;
            padding: 0 28px;
            border-radius: var(--radius-md);
            font-size: 16px;
            font-weight: 600;
            line-height: 1;
            cursor: pointer;
            transition: all .25s ease;
            border: none;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--accent-text);
        }
        .btn-primary:hover {
            background: #e8990c;
            color: var(--accent-text);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(246, 167, 35, 0.25);
        }
        .btn-secondary {
            background: #fff;
            color: var(--deep-sea);
            border: 1px solid var(--deep-sea);
        }
        .btn-secondary:hover {
            background: #EFF7FA;
            color: var(--deep-sea);
            transform: translateY(-2px);
        }
        .btn:focus-visible {
            outline: 2px solid var(--deep-sea);
            outline-offset: 4px;
            box-shadow: 0 0 0 4px rgba(20, 135, 184, 0.2);
        }
        .btn-sm {
            height: 38px;
            padding: 0 18px;
            font-size: 14px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: 0 4px 16px rgba(15, 70, 100, 0.06);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }
        .logo a {
            display: flex;
            align-items: center;
            gap: 9px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: .5px;
            white-space: nowrap;
        }
        .logo a i {
            color: var(--primary);
            font-size: 22px;
        }
        .logo-badge {
            background: var(--primary);
            color: #fff;
            font-size: 11px;
            font-weight: 500;
            padding: 3px 10px;
            border-radius: 999px;
            letter-spacing: 1px;
        }
        .header-search {
            display: flex;
            flex: 0 1 380px;
            position: relative;
        }
        .header-search input {
            width: 100%;
            height: 42px;
            border-radius: 999px 0 0 999px;
            border: 1px solid var(--border);
            border-right: none;
            padding: 0 20px;
            font-size: 14px;
            background: #fff;
            transition: border-color .25s;
        }
        .header-search input:focus {
            border-color: var(--primary);
        }
        .header-search button {
            width: 48px;
            border-radius: 0 999px 999px 0;
            background: var(--deep-sea);
            color: #fff;
            cursor: pointer;
            transition: background .25s;
            flex-shrink: 0;
        }
        .header-search button:hover {
            background: #0a4b63;
        }
        .header-download-btn .btn {
            height: 44px;
            padding: 0 22px;
            font-size: 15px;
        }
        .nav-channel {
            background: #fff;
            border-top: 1px solid var(--border);
        }
        .nav-channel-list {
            display: flex;
            align-items: center;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            white-space: nowrap;
        }
        .nav-channel-list::-webkit-scrollbar {
            display: none;
        }
        .nav-channel-list li {
            flex-shrink: 0;
        }
        .nav-channel-list a {
            display: block;
            padding: 14px 24px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-sub);
            border-bottom: 3px solid transparent;
            transition: color .25s, border-color .25s;
        }
        .nav-channel-list a:hover {
            color: var(--primary);
        }
        .nav-channel-list a.active {
            color: var(--primary);
            border-bottom-color: var(--accent);
        }
        .article-breadcrumb {
            padding: 32px 0 8px;
            font-size: 13px;
            color: var(--text-sub);
        }
        .article-breadcrumb a {
            color: var(--text-sub);
        }
        .article-breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb-sep {
            margin: 0 10px;
            color: #BCCDD9;
        }
        .breadcrumb-current {
            color: var(--text-main);
            font-weight: 500;
        }
        .article-container {
            max-width: 860px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .article-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 48px;
            margin-bottom: 32px;
            transition: box-shadow .25s;
        }
        .article-title {
            font-size: 34px;
            line-height: 1.35;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 18px;
            letter-spacing: .5px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 20px;
            color: var(--text-sub);
            font-size: 14px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border);
            margin-bottom: 28px;
        }
        .article-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-summary {
            background: #F0F7FA;
            border-left: 4px solid var(--accent);
            padding: 18px 22px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.7;
            margin-bottom: 32px;
            max-height: 180px;
            overflow: hidden;
            position: relative;
        }
        .article-content {
            font-size: 17px;
            line-height: 1.85;
            color: var(--text-main);
            word-wrap: break-word;
        }
        .article-content p {
            margin-bottom: 24px;
            text-align: justify;
        }
        .article-content h2 {
            font-size: 24px;
            font-weight: 700;
            margin: 40px 0 18px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--border);
            color: var(--deep-sea);
        }
        .article-content h3 {
            font-size: 20px;
            font-weight: 600;
            margin: 32px 0 14px;
            color: var(--deep-sea);
        }
        .article-content h4 {
            font-size: 18px;
            font-weight: 600;
            margin: 24px 0 12px;
        }
        .article-content ul {
            padding-left: 24px;
            margin-bottom: 24px;
            list-style: disc;
        }
        .article-content ol {
            padding-left: 24px;
            margin-bottom: 24px;
            list-style: decimal;
        }
        .article-content li {
            margin-bottom: 8px;
        }
        .article-content img {
            border-radius: var(--radius-md);
            margin: 20px 0;
            width: 100%;
            height: auto;
        }
        .article-content blockquote {
            background: #F0F7FA;
            border-left: 4px solid var(--primary);
            padding: 18px 24px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin: 28px 0;
            color: var(--text-sub);
            font-size: 15px;
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 28px 0;
            font-size: 14px;
        }
        .article-content th {
            background: #EFF7FA;
            font-weight: 600;
            color: var(--deep-sea);
        }
        .article-content th,
        .article-content td {
            border: 1px solid var(--border);
            padding: 12px 16px;
            text-align: left;
        }
        .article-content code {
            background: #F0F7FA;
            color: var(--deep-sea);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 14px;
            font-family: "SFMono-Regular", Consolas, monospace;
        }
        .article-content pre {
            background: #0E3A4A;
            color: #E8F4FA;
            padding: 22px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin-bottom: 28px;
            font-size: 14px;
            line-height: 1.6;
        }
        .article-content pre code {
            background: none;
            color: inherit;
            padding: 0;
        }
        .article-tags {
            margin-top: 36px;
            padding-top: 20px;
            border-top: 1px solid var(--border);
        }
        .tag-pill {
            display: inline-block;
            background: #EFF7FA;
            color: var(--deep-sea);
            font-size: 13px;
            padding: 5px 16px;
            border-radius: 999px;
            margin-right: 8px;
            margin-bottom: 8px;
            font-weight: 500;
        }
        .article-pager {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            border-top: 1px solid var(--border);
            padding-top: 28px;
            margin-top: 40px;
        }
        .pager-item {
            flex: 1;
        }
        .pager-item.text-right {
            text-align: right;
        }
        .pager-label {
            display: block;
            color: var(--text-sub);
            font-size: 13px;
            margin-bottom: 4px;
        }
        .pager-empty {
            color: #BCCDD9;
            font-size: 14px;
        }
        .back-link {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #F0F7FA;
            color: var(--primary);
            padding: 10px 20px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            transition: background .25s, color .25s;
        }
        .back-link:hover {
            background: #E1F0F6;
            color: var(--deep-sea);
        }
        .related-wrap {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 36px;
            margin-bottom: 32px;
        }
        .related-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .related-title i {
            color: var(--primary);
        }
        .related-card {
            display: block;
            background: var(--bg);
            border-radius: var(--radius-md);
            padding: 18px;
            margin-bottom: 0;
            border: 1px solid transparent;
            transition: transform .25s, box-shadow .25s, border-color .25s;
            height: 100%;
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: #D5E6EE;
        }
        .related-card img {
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            width: 100%;
            height: 120px;
            object-fit: cover;
        }
        .related-card h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
        }
        .related-card p {
            font-size: 13px;
            color: var(--text-sub);
            line-height: 1.6;
            margin-bottom: 0;
        }
        .article-cta {
            background: linear-gradient(135deg, #E8F4FA 0%, #FDF3DF 100%);
            border-radius: var(--radius-lg);
            padding: 44px 36px;
            text-align: center;
            margin-bottom: 56px;
        }
        .article-cta h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
        }
        .article-cta p {
            color: var(--text-sub);
            font-size: 15px;
            margin-bottom: 24px;
        }
        .article-cta .btn {
            margin: 0 8px;
        }
        .not-found-wrap {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 80px 40px;
            text-align: center;
            margin: 60px 0 80px;
        }
        .not-found-icon {
            width: 88px;
            height: 88px;
            border-radius: 50%;
            background: #F0F7FA;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 24px;
            font-size: 34px;
            color: var(--primary);
        }
        .not-found-wrap h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
        }
        .not-found-wrap p {
            color: var(--text-sub);
            font-size: 15px;
            max-width: 420px;
            margin: 0 auto 28px;
        }
        .site-footer {
            background: var(--deep-sea);
            color: #DCE6EE;
            padding: 56px 0 20px;
            margin-top: 32px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 16px;
        }
        .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
        }
        .footer-badge {
            background: var(--accent);
            color: var(--accent-text);
            font-size: 11px;
            padding: 3px 10px;
            border-radius: 999px;
            font-weight: 600;
        }
        .footer-desc {
            color: #A7C4D6;
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 12px;
        }
        .footer-heading {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
            letter-spacing: .5px;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #A7C4D6;
            font-size: 14px;
            transition: color .25s;
        }
        .footer-links a:hover {
            color: #fff;
        }
        .footer-disclaimer {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            margin-top: 40px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 13px;
            color: #9DB8CA;
        }
        .disclaimer-text {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .mobile-download-bar {
            display: none;
        }
        .mobile-bar-close {
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: #F0F7FA;
            color: var(--text-sub);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            transition: background .25s;
            border: none;
            flex-shrink: 0;
        }
        .mobile-bar-close:hover {
            background: #E1F0F6;
        }
        @media (max-width: 1024px) {
            .header-search {
                flex: 0 1 280px;
            }
            .article-title {
                font-size: 30px;
            }
            .related-card img {
                height: 100px;
            }
        }
        @media (max-width: 767px) {
            .container {
                padding: 0 16px;
            }
            .header-top {
                height: 62px;
                gap: 12px;
            }
            .logo a {
                font-size: 18px;
            }
            .logo a i {
                font-size: 18px;
            }
            .logo-badge {
                font-size: 10px;
                padding: 2px 8px;
            }
            .header-search {
                flex: 0 0 auto;
                position: static;
            }
            .header-search input {
                display: none;
            }
            .header-search button {
                width: 40px;
                height: 40px;
                border-radius: 50%;
                background: #F0F7FA;
                color: var(--deep-sea);
                border: none;
                font-size: 14px;
            }
            .header-download-btn .btn {
                height: 38px;
                padding: 0 16px;
                font-size: 14px;
                gap: 6px;
            }
            .nav-channel-list a {
                padding: 12px 16px;
                font-size: 14px;
            }
            .article-breadcrumb {
                padding: 20px 0 6px;
                font-size: 12px;
                white-space: nowrap;
                overflow: hidden;
                text-overflow: ellipsis;
            }
            .article-container {
                padding: 0 16px;
            }
            .article-card {
                padding: 28px 20px;
                border-radius: var(--radius-md);
            }
            .article-title {
                font-size: 24px;
                line-height: 1.4;
            }
            .article-meta {
                gap: 12px;
                font-size: 13px;
                padding-bottom: 16px;
            }
            .article-summary {
                padding: 14px 16px;
                font-size: 14px;
                max-height: none;
            }
            .article-content {
                font-size: 16px;
                line-height: 1.8;
            }
            .article-content h2 {
                font-size: 21px;
            }
            .article-content h3 {
                font-size: 18px;
            }
            .article-pager {
                flex-wrap: wrap;
                gap: 12px;
            }
            .pager-item {
                flex: 1 1 45%;
            }
            .back-link {
                order: 3;
                width: 100%;
                justify-content: center;
            }
            .related-wrap {
                padding: 24px 18px;
            }
            .related-card {
                margin-bottom: 16px;
            }
            .related-card img {
                height: 130px;
            }
            .article-cta {
                padding: 32px 20px;
            }
            .article-cta .btn {
                display: flex;
                width: 100%;
                margin: 8px 0;
            }
            .footer-disclaimer {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
            .disclaimer-text {
                justify-content: center;
            }
            .mobile-download-bar {
                display: flex;
                align-items: center;
                gap: 12px;
                position: fixed;
                bottom: 0;
                left: 0;
                right: 0;
                height: 68px;
                background: rgba(255, 255, 255, 0.97);
                backdrop-filter: blur(10px);
                -webkit-backdrop-filter: blur(10px);
                border-top: 1px solid var(--border);
                padding: 8px 16px;
                z-index: 200;
            }
            body.has-mobile-bar {
                padding-bottom: 68px;
            }
            .mobile-bar-text {
                flex: 1;
                font-size: 13px;
                font-weight: 600;
                color: var(--text-main);
                line-height: 1.3;
            }
            .mobile-download-bar .btn {
                height: 40px;
                padding: 0 16px;
                font-size: 14px;
                flex-shrink: 0;
            }
        }
        @media (max-width: 520px) {
            .header-top {
                gap: 8px;
            }
            .logo a {
                font-size: 16px;
                letter-spacing: 0;
            }
            .logo a i {
                font-size: 16px;
            }
            .logo-badge {
                display: none;
            }
            .header-download-btn .btn {
                padding: 0 12px;
                font-size: 13px;
                gap: 4px;
            }
            .nav-channel-list a {
                padding: 10px 12px;
                font-size: 13px;
            }
            .article-card {
                padding: 22px 16px;
            }
            .article-title {
                font-size: 21px;
            }
            .article-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
            .pager-item {
                flex: 1 1 100%;
                text-align: left !important;
            }
            .back-link {
                order: 3;
                width: 100%;
            }
        }
        @media (min-width: 768px) {
            .related-card {
                height: 100%;
            }
            .related-grid .cell {
                margin-bottom: 0;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #1487B8;
            --primary-dark: #0E5E7D;
            --primary-light: #E8F4FA;
            --accent: #F6A723;
            --accent-dark: #E09517;
            --bg: #F5F9FC;
            --card: #FFFFFF;
            --text: #1F2D3D;
            --text-secondary: #5A6B7A;
            --border: #E3ECF2;
            --danger: #D64A3A;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-sm: 0 4px 20px rgba(15, 70, 100, 0.06);
            --shadow-md: 0 12px 28px rgba(15, 70, 100, 0.10);
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, "PingFang SC", "HarmonicOS Sans SC", "Microsoft YaHei", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

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

        .grid-x {
            margin: 0 -12px;
        }

        .cell {
            padding: 0 12px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 48px;
            padding: 0 24px;
            border-radius: var(--radius-md);
            font-size: 16px;
            font-weight: 600;
            line-height: 1;
            cursor: pointer;
            border: none;
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn i {
            font-size: 15px;
        }

        .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
        }

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

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

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

        .btn-large {
            width: 100%;
            max-width: 280px;
            height: 52px;
            font-size: 17px;
        }

        .section {
            padding: 96px 0;
        }

        .section-sm {
            padding: 64px 0;
        }

        .section-title {
            font-size: 34px;
            line-height: 1.3;
            font-weight: 700;
            text-align: center;
            margin-bottom: 16px;
            color: var(--text);
            letter-spacing: -0.5px;
        }

        .section-subtitle {
            text-align: center;
            color: var(--text-secondary);
            font-size: 16px;
            max-width: 720px;
            margin: 0 auto 48px;
            line-height: 1.7;
        }

        .site-header {
            position: relative;
            z-index: 100;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            box-shadow: 0 4px 16px rgba(15, 70, 100, 0.06);
            border-bottom: 1px solid var(--border);
        }

        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }

        .logo {
            flex-shrink: 0;
        }

        .logo a {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.2;
        }

        .logo a:hover {
            color: var(--text);
        }

        .logo-badge {
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 999px;
            line-height: 1.4;
            display: inline-block;
        }

        .header-search {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 999px;
            height: 40px;
            padding: 0 6px 0 16px;
            max-width: 360px;
            width: 100%;
            transition: var(--transition);
        }

        .header-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(20, 135, 184, 0.12);
        }

        .header-search input {
            flex: 1;
            border: none;
            background: transparent;
            font-size: 14px;
            color: var(--text);
            outline: none;
            height: 100%;
            padding: 0;
        }

        .header-search button {
            width: 32px;
            height: 32px;
            border: none;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            font-size: 13px;
            transition: var(--transition);
            flex-shrink: 0;
        }

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

        .header-download-btn .btn {
            height: 40px;
            padding: 0 20px;
            font-size: 14px;
        }

        .nav-channel {
            background: var(--card);
            border-top: 1px solid var(--border);
        }

        .nav-channel-list {
            display: flex;
            list-style: none;
            gap: 8px;
            height: 56px;
            align-items: center;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 0;
            margin: 0;
        }

        .nav-channel-list::-webkit-scrollbar {
            display: none;
        }

        .nav-channel-list li {
            flex-shrink: 0;
            height: 100%;
            display: flex;
            align-items: center;
        }

        .nav-channel-list a {
            display: inline-flex;
            align-items: center;
            height: 36px;
            padding: 0 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 999px;
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-channel-list a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .nav-channel-list a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
            position: relative;
        }

        .nav-channel-list a.active::after {
            content: '';
            position: absolute;
            bottom: -12px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            background: var(--accent);
            border-radius: 999px;
        }

        .notice-bar {
            background: var(--primary-light);
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 0 16px;
            border-bottom: 1px solid var(--border);
        }

        .notice-bar span {
            font-size: 13px;
            color: var(--primary-dark);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 100%;
        }

        .page-hero {
            position: relative;
            min-height: 320px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(232, 244, 250, 0.85), rgba(245, 249, 252, 0.95)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            border-bottom: 1px solid var(--border);
            padding: 80px 0 64px;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 1h40M1 0v40' stroke='%231487B8' stroke-opacity='0.06' stroke-width='1'/%3E%3C/svg%3E");
            pointer-events: none;
        }

        .page-hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 820px;
            margin: 0 auto;
        }

        .page-hero h1 {
            font-size: 40px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

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

        .page-hero p {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 720px;
            margin: 0 auto;
            line-height: 1.8;
        }

        .intro-section {
            background: var(--card);
            border-bottom: 1px solid var(--border);
            padding: 56px 0;
        }

        .intro-content {
            max-width: 960px;
            margin: 0 auto;
            text-align: center;
            padding: 0 24px;
        }

        .intro-content p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 12px;
        }

        .intro-content p:last-child {
            margin-bottom: 0;
        }

        .main-panel {
            padding: 96px 0;
        }

        .panel-wrap {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 48px;
            align-items: start;
        }

        .feature-list {
            background: var(--card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 40px;
        }

        .feature-list-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .feature-list-subtitle {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 32px;
            line-height: 1.6;
        }

        .feature-item {
            display: flex;
            gap: 16px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }

        .feature-item:last-child {
            border-bottom: none;
        }

        .feature-item:hover {
            padding-left: 8px;
        }

        .feature-icon {
            width: 48px;
            height: 48px;
            background: var(--primary-light);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 20px;
            flex-shrink: 0;
        }

        .feature-item:nth-child(even) .feature-icon {
            background: rgba(246, 167, 35, 0.15);
            color: var(--accent-dark);
        }

        .feature-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 4px;
            line-height: 1.4;
        }

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

        .info-card {
            background: var(--card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            position: sticky;
            top: 24px;
            border: 1px solid var(--border);
        }

        .info-card-head {
            background: var(--primary-dark);
            padding: 24px 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .info-card-head h3 {
            color: #fff;
            font-size: 18px;
            font-weight: 600;
            margin: 0;
        }

        .info-badge {
            background: var(--accent);
            color: var(--primary-dark);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            line-height: 1.4;
        }

        .info-card-body {
            padding: 28px;
        }

        .info-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 14px 0;
            border-bottom: 1px dashed var(--border);
        }

        .info-row:last-child {
            border-bottom: none;
        }

        .info-label {
            font-size: 14px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .info-label i {
            color: var(--primary);
            width: 18px;
            text-align: center;
        }

        .info-value {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            text-align: right;
        }

        .info-card-cta {
            padding: 20px 28px 28px;
            border-top: 1px solid var(--border);
            text-align: center;
        }

        .info-card-cta .btn {
            width: 100%;
        }

        .info-card-tip {
            margin-top: 12px;
            font-size: 13px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
        }

        .process-section {
            background: linear-gradient(180deg, var(--bg) 0%, var(--card) 100%);
        }

        .process-wrap {
            max-width: 960px;
            margin: 0 auto;
            background: var(--primary-light);
            border-radius: var(--radius-lg);
            padding: 48px;
            position: relative;
            overflow: hidden;
        }

        .process-wrap::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--accent), var(--primary));
        }

        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }

        .process-steps::before {
            content: '';
            position: absolute;
            top: 28px;
            left: 12%;
            right: 12%;
            height: 2px;
            background: repeating-linear-gradient(90deg, var(--border) 0, var(--border) 6px, transparent 6px, transparent 12px);
        }

        .process-step {
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .process-step-num {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            margin: 0 auto 16px;
            background: var(--primary);
            color: #fff;
            box-shadow: 0 0 0 6px rgba(20, 135, 184, 0.15);
            position: relative;
        }

        .process-step.is-active .process-step-num {
            background: var(--accent);
            color: var(--primary-dark);
            box-shadow: 0 0 0 6px rgba(246, 167, 35, 0.18);
        }

        .process-step h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
        }

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

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

        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item.open {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
            background: var(--card);
            position: relative;
        }

        .faq-item.open::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            background: var(--accent);
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            user-select: none;
        }

        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--primary);
            transition: transform 0.3s ease;
            flex-shrink: 0;
            margin-left: 16px;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--accent);
            color: var(--primary-dark);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }

        .faq-answer-inner {
            padding: 0 24px 22px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, rgba(14, 94, 125, 0.04), rgba(20, 135, 184, 0.08)), url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            border-top: 1px solid var(--border);
            position: relative;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(245, 249, 252, 0.9);
        }

        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .cta-content h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .cta-content p {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 32px;
            line-height: 1.7;
        }

        .cta-btns {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 24px;
        }

        .cta-secure {
            font-size: 13px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .cta-secure i {
            color: var(--primary);
        }

        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 64px 0 0;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
        }

        .footer-badge {
            background: var(--accent);
            color: var(--primary-dark);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 999px;
            line-height: 1.4;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 16px;
        }

        .footer-heading {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            padding-bottom: 8px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.15);
        }

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

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-disclaimer {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            margin-top: 40px;
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
        }

        .disclaimer-text {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .footer-disclaimer i {
            color: var(--accent);
        }

        :focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
            box-shadow: 0 0 0 4px rgba(20, 135, 184, 0.15);
        }

        .back-to-top {
            position: fixed;
            bottom: 32px;
            right: 24px;
            width: 44px;
            height: 44px;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 50%;
            box-shadow: var(--shadow-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 16px;
            cursor: pointer;
            z-index: 999;
            transition: var(--transition);
        }

        .back-to-top:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-4px);
        }

        .tag-pill {
            display: inline-flex;
            align-items: center;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            line-height: 1.4;
        }

        @media (max-width: 1023px) {
            .section {
                padding: 72px 0;
            }

            .page-hero {
                min-height: 280px;
                padding: 60px 0 48px;
            }

            .page-hero h1 {
                font-size: 34px;
            }

            .panel-wrap {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .info-card {
                position: static;
            }

            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }

            .process-steps::before {
                display: none;
            }

            .header-search {
                max-width: 260px;
            }

            .header-download-btn .btn {
                padding: 0 14px;
                font-size: 13px;
            }
        }

        @media (max-width: 767px) {
            .section {
                padding: 48px 0;
            }

            .header-top {
                height: 64px;
                gap: 12px;
            }

            .logo a {
                font-size: 18px;
            }

            .logo-badge {
                display: none;
            }

            .header-search {
                max-width: 40px;
                background: transparent;
                border: none;
                padding: 0;
                justify-content: center;
            }

            .header-search input {
                display: none;
            }

            .header-search button {
                width: 36px;
                height: 36px;
            }

            .header-download-btn .btn {
                width: 40px;
                padding: 0;
                font-size: 0;
                gap: 0;
                border-radius: 50%;
            }

            .header-download-btn .btn i {
                font-size: 16px;
                margin: 0;
            }

            .nav-channel {
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
            }

            .nav-channel-list {
                padding: 0 16px;
                gap: 4px;
            }

            .nav-channel-list a {
                padding: 0 14px;
                font-size: 14px;
            }

            .nav-channel-list a.active::after {
                bottom: -10px;
            }

            .page-hero {
                min-height: 240px;
                padding: 48px 0 40px;
            }

            .page-hero h1 {
                font-size: 26px;
                line-height: 1.4;
            }

            .page-hero p {
                font-size: 15px;
                line-height: 1.7;
                padding: 0 16px;
            }

            .intro-section {
                padding: 40px 0;
            }

            .intro-content p {
                font-size: 15px;
            }

            .main-panel {
                padding: 64px 0;
            }

            .feature-list {
                padding: 24px;
            }

            .feature-list-title {
                font-size: 20px;
            }

            .feature-item {
                flex-direction: row;
                padding: 16px 0;
            }

            .feature-icon {
                width: 42px;
                height: 42px;
                font-size: 18px;
            }

            .process-wrap {
                padding: 32px 24px;
            }

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

            .process-step {
                display: flex;
                text-align: left;
                align-items: flex-start;
                gap: 16px;
            }

            .process-step-num {
                margin: 0;
                flex-shrink: 0;
                width: 44px;
                height: 44px;
                font-size: 16px;
            }

            .process-step h4 {
                margin-bottom: 4px;
            }

            .faq-question {
                padding: 16px 20px;
                font-size: 15px;
            }

            .faq-answer-inner {
                padding: 0 20px 16px;
                font-size: 14px;
            }

            .cta-btns {
                flex-direction: column;
                align-items: center;
            }

            .cta-btns .btn {
                width: 100%;
                max-width: 280px;
            }

            .footer-disclaimer {
                flex-direction: column;
                text-align: center;
                padding: 16px;
            }

            .container {
                padding: 0 16px;
            }
        }

        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 22px;
            }

            .section-title {
                font-size: 26px;
            }

            .section-subtitle {
                font-size: 15px;
                margin-bottom: 32px;
            }

            .header-top {
                flex-wrap: nowrap;
            }

            .logo a {
                font-size: 16px;
                gap: 4px;
            }

            .info-card-head {
                padding: 20px;
            }

            .info-card-body {
                padding: 20px;
            }

            .info-card-cta {
                padding: 16px 20px 20px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #1487B8;
            --deep-cyan: #0E5E7D;
            --deep-text: #0E3A4A;
            --accent: #F6A723;
            --bg: #F5F9FC;
            --card-bg: #FFFFFF;
            --text-main: #1F2D3D;
            --text-sub: #5A6B7A;
            --border: #E3ECF2;
            --danger: #D64A3A;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-card: 0 4px 20px rgba(15, 70, 100, 0.06);
            --shadow-hover: 0 12px 28px rgba(15, 70, 100, 0.10);
            --font-family: -apple-system, "PingFang SC", "HarmonicOS Sans SC", "Microsoft YaHei", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        body {
            font-family: var(--font-family);
            background: var(--bg);
            color: var(--text-main);
            line-height: 1.7;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: var(--primary);
            transition: color .25s ease;
        }
        button,
        input,
        summary {
            font-family: inherit;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        summary:focus-visible {
            outline: 2px solid var(--deep-cyan);
            outline-offset: 2px;
            box-shadow: 0 0 0 4px rgba(20, 135, 184, 0.20);
        }
        .container,
        .grid-container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
            width: 100%;
        }

        /* 按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 48px;
            padding: 0 24px;
            border-radius: 12px;
            font-size: 16px;
            font-weight: 600;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all .25s ease;
            line-height: 1;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--deep-text);
            border-color: var(--accent);
        }
        .btn-primary:hover {
            background: #e09812;
            color: var(--deep-text);
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(246, 167, 35, 0.25);
        }
        .btn-outline {
            background: #fff;
            color: var(--deep-cyan);
            border-color: var(--primary);
        }
        .btn-outline:hover {
            background: rgba(20, 135, 184, 0.06);
            color: var(--primary);
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: 0 4px 16px rgba(15, 70, 100, 0.06);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            height: 72px;
        }
        .logo {
            flex-shrink: 0;
        }
        .logo a {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 21px;
            font-weight: 700;
            color: var(--deep-cyan);
        }
        .logo a:hover {
            color: var(--primary);
        }
        .logo-badge {
            display: inline-block;
            background: var(--accent);
            color: var(--deep-text);
            font-size: 12px;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: 999px;
            line-height: 1.6;
        }
        .header-search {
            flex: 0 1 360px;
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 999px;
            height: 42px;
            padding: 0 4px 0 18px;
            transition: border-color .25s ease;
        }
        .header-search:focus-within {
            border-color: var(--primary);
        }
        .header-search input {
            flex: 1;
            border: none;
            background: transparent;
            font-size: 14px;
            color: var(--text-main);
            outline: none;
            min-width: 0;
        }
        .header-search input::placeholder {
            color: #98A6B3;
        }
        .header-search button {
            width: 34px;
            height: 34px;
            border: none;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background .25s ease;
        }
        .header-search button:hover {
            background: var(--deep-cyan);
        }
        .header-download-btn {
            flex-shrink: 0;
        }

        /* 频道导航 */
        .nav-channel {
            border-top: 1px solid var(--border);
            background: #FFFFFF;
        }
        .nav-channel-list {
            display: flex;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 8px 0;
            overflow-x: auto;
            white-space: nowrap;
            scrollbar-width: none;
        }
        .nav-channel-list::-webkit-scrollbar {
            display: none;
        }
        .nav-channel-list li {
            flex-shrink: 0;
        }
        .nav-channel-list a {
            display: block;
            padding: 10px 20px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-sub);
            transition: all .25s ease;
        }
        .nav-channel-list a:hover {
            color: var(--primary);
            background: rgba(20, 135, 184, 0.08);
        }
        .nav-channel-list a.active {
            color: var(--primary);
            background: rgba(20, 135, 184, 0.10);
            font-weight: 600;
            box-shadow: inset 0 -3px 0 var(--accent);
        }

        /* 页面 Hero */
        .page-hero {
            position: relative;
            background:
                linear-gradient(135deg, rgba(20, 135, 184, 0.14), rgba(245, 249, 252, 0.92)),
                url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            padding: 72px 0;
            text-align: center;
        }
        .page-hero h1 {
            font-size: 38px;
            line-height: 1.35;
            color: var(--deep-cyan);
            font-weight: 700;
            margin: 0 0 14px;
        }
        .page-hero .hero-sub {
            font-size: 16px;
            color: var(--text-sub);
            max-width: 680px;
            margin: 0 auto;
            line-height: 1.8;
        }
        .page-hero .hero-meta {
            margin-top: 20px;
            display: flex;
            justify-content: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.85);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 6px 14px;
            font-size: 13px;
            color: var(--deep-cyan);
        }

        /* 通用板块头部 */
        .section-header {
            text-align: center;
            margin-bottom: 44px;
        }
        .section-header h2 {
            font-size: 28px;
            color: var(--text-main);
            font-weight: 700;
            margin-bottom: 10px;
        }
        .section-header p {
            font-size: 15px;
            color: var(--text-sub);
            max-width: 680px;
            margin: 0 auto;
        }

        /* 资源卡片区 */
        .resource-section {
            padding: 72px 0;
            background: var(--bg);
        }
        .resource-col {
            margin-bottom: 24px;
        }
        .resource-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            height: 100%;
            box-shadow: var(--shadow-card);
            transition: transform .25s ease, box-shadow .25s ease;
            display: flex;
            flex-direction: column;
        }
        .resource-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .resource-card .card-img {
            position: relative;
            height: 200px;
            overflow: hidden;
        }
        .resource-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .3s ease;
        }
        .resource-card:hover .card-img img {
            transform: scale(1.03);
        }
        .resource-card .card-body {
            padding: 26px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .resource-card .card-body h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 10px;
        }
        .resource-card .card-body p {
            font-size: 15px;
            line-height: 1.7;
            color: var(--text-sub);
            margin-bottom: 18px;
            flex: 1;
        }
        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
        }
        .card-link i {
            transition: transform .25s ease;
        }
        .card-link:hover {
            color: var(--deep-cyan);
        }
        .card-link:hover i {
            transform: translateX(4px);
        }

        /* 更新服务流程 */
        .flow-section {
            padding: 72px 0;
            background: #fff;
        }
        .flow-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-top: 36px;
        }
        .flow-step {
            text-align: center;
            padding: 32px 24px;
            background: var(--bg);
            border-radius: var(--radius-lg);
            height: 100%;
            transition: box-shadow .25s ease, transform .25s ease;
        }
        .flow-step:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .step-num {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            box-shadow: 0 6px 16px rgba(20, 135, 184, 0.22);
        }
        .flow-step:nth-child(1) .step-num {
            background: var(--accent);
            color: var(--deep-text);
        }
        .flow-step h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
        }
        .flow-step p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            margin: 0;
        }

        /* FAQ */
        .faq-section {
            padding: 72px 0;
            background: var(--bg);
        }
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            transition: border-color .25s ease, box-shadow .25s ease;
            overflow: hidden;
        }
        .faq-item:hover {
            box-shadow: var(--shadow-card);
        }
        .faq-item[open] {
            border-color: var(--primary);
            box-shadow: 0 4px 16px rgba(20, 135, 184, 0.10);
        }
        .faq-item summary {
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 22px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            user-select: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary:hover {
            color: var(--primary);
        }
        .faq-icon {
            position: relative;
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: rgba(20, 135, 184, 0.10);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .faq-icon::before {
            content: '+';
            font-size: 18px;
            font-weight: 400;
            color: var(--primary);
            transition: transform .25s ease;
        }
        .faq-item[open] .faq-icon::before {
            transform: rotate(45deg);
        }
        .faq-item .faq-answer {
            padding: 0 24px 22px;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-sub);
        }

        /* CTA 区 */
        .cta-section {
            background: linear-gradient(135deg, var(--deep-cyan) 0%, var(--primary) 100%);
            padding: 64px 0;
            text-align: center;
            color: #fff;
        }
        .cta-section h2 {
            font-size: 30px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.92);
            margin-bottom: 28px;
        }
        .cta-btns {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 20px;
        }
        .cta-section .btn-outline {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.7);
        }
        .cta-section .btn-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
        }
        .cta-note {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.75) !important;
            margin: 0;
        }

        /* Footer */
        .site-footer {
            background: var(--deep-cyan);
            color: rgba(255, 255, 255, 0.9);
            padding: 56px 0 24px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 16px;
        }
        .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
        }
        .footer-badge {
            display: inline-block;
            background: var(--accent);
            color: var(--deep-text);
            font-size: 12px;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: 999px;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 16px;
        }
        .footer-heading {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.78);
            transition: color .25s ease;
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        .footer-disclaimer {
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
        }
        .disclaimer-text i {
            margin-right: 6px;
            color: var(--accent);
        }

        /* 响应式 */
        @media (max-width: 1023px) {
            .header-search {
                flex: 0 1 280px;
            }
            .page-hero h1 {
                font-size: 32px;
            }
            .flow-grid {
                gap: 20px;
            }
        }
        @media (max-width: 767px) {
            .container,
            .grid-container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .header-top {
                height: 64px;
                gap: 12px;
            }
            .logo a {
                font-size: 17px;
            }
            .logo-badge {
                display: none;
            }
            .header-search {
                flex: 0 0 38px;
                width: 38px;
                padding: 0;
                justify-content: center;
                border-radius: 50%;
                border-color: transparent;
                background: rgba(20, 135, 184, 0.08);
            }
            .header-search input {
                display: none;
            }
            .header-search button {
                width: 38px;
                height: 38px;
                background: transparent;
                color: var(--primary);
                font-size: 15px;
            }
            .header-search button:hover {
                background: transparent;
                color: var(--deep-cyan);
            }
            .header-download-btn .btn {
                height: 40px;
                padding: 0 14px;
                font-size: 14px;
            }
            .nav-channel-list a {
                padding: 8px 14px;
                font-size: 14px;
            }
            .page-hero {
                padding: 48px 0;
            }
            .page-hero h1 {
                font-size: 26px;
            }
            .page-hero .hero-sub {
                font-size: 15px;
            }
            .hero-tag {
                font-size: 12px;
                padding: 5px 10px;
            }
            .resource-section,
            .flow-section,
            .faq-section {
                padding: 48px 0;
            }
            .section-header {
                margin-bottom: 32px;
            }
            .section-header h2 {
                font-size: 24px;
            }
            .resource-card .card-body {
                padding: 20px;
            }
            .resource-card .card-img {
                height: 170px;
            }
            .flow-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .faq-item summary {
                padding: 18px 16px;
                font-size: 15px;
            }
            .faq-item .faq-answer {
                padding: 0 16px 18px;
                font-size: 14px;
            }
            .cta-section {
                padding: 48px 0;
            }
            .cta-section h2 {
                font-size: 24px;
            }
            .cta-btns .btn {
                width: 100%;
                max-width: 300px;
            }
            .footer-disclaimer {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media (max-width: 520px) {
            .logo a {
                font-size: 16px;
            }
            .header-download-btn .btn {
                padding: 0 10px;
                font-size: 13px;
                height: 38px;
            }
            .page-hero h1 {
                font-size: 23px;
            }
            .flow-step {
                padding: 26px 20px;
            }
        }