/* roulang page: index */
body {
            font-family: Arial, sans-serif;
            margin: 0;
            padding: 0;
            background-color: #f4f4f4;
            color: #333;
        }

        header {
            background-color: #333;
            color: #fff;
            padding: 1rem 0;
            text-align: center;
        }

        nav {
            background-color: #444;
            padding: 0.5rem 0;
            text-align: center;
        }

        nav a {
            color: #fff;
            text-decoration: none;
            padding: 0.5rem 1rem;
            margin: 0 0.5rem;
            border-radius: 5px;
            transition: background-color 0.3s ease;
        }

        nav a:hover {
            background-color: #555;
        }

        main {
            padding: 1rem;
            max-width: 1200px;
            margin: 0 auto;
        }

        section {
            background-color: #fff;
            margin-bottom: 1rem;
            padding: 1rem;
            border-radius: 8px;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
        }

        h1, h2, h3 {
            color: #333;
            margin-bottom: 0.5rem;
        }

        p {
            line-height: 1.6;
        }

        /* Hero Banner (招聘雇主) */
        #hero {
            background: linear-gradient(to right, #007bff, #0056b3);
            color: #fff;
            text-align: center;
            padding: 4rem 0;
        }

        #hero h1 {
            font-size: 2.5rem;
            margin-bottom: 1rem;
        }

        #hero p {
            font-size: 1.2rem;
        }

        /* 分类入口 */
        #categories {
            text-align: center;
        }

        #categories ul {
            list-style: none;
            padding: 0;
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
        }

        #categories li {
            margin: 0.5rem;
            padding: 1rem;
            background-color: #eee;
            border-radius: 8px;
            min-width: 150px;
            text-align: center;
        }

        #categories a {
            text-decoration: none;
            color: #333;
            font-weight: bold;
        }

        /* 精选推荐 */
        #featured-topics {
            text-align: center;
        }

        /* 行业资讯与动态 */
        #news-insights {}
        /* 策略热度与效能排行榜 */
        #ranking-list {
            overflow-x: auto;
        }

        #ranking-list table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 1rem;
        }

        #ranking-list th, #ranking-list td {
            border: 1px solid #ddd;
            padding: 0.5rem;
            text-align: left;
        }

        #ranking-list

`.rank-num` styling is completed with base styles and top 3 variations. The next step involves constructing the HTML structure within the `<main>` element, ensuring the presence of the required content sections and providing appropriate names.

<section id="hero">
        <h1>华人策略社区内容管理平台</h1>
        <p>一个为华人策略爱好者打造的内容管理平台，提供最新的行业资讯、策略分析、社区交流和实用的工具。</p>
    </section>

    <section id="categories">
        <h2>分类入口</h2>
        <ul>
            <li><a href="#strategies">策略分享</a></li>
            <li><a href="#news">行业资讯</a></li>
            <li><a href="#tools">实用工具</a></li>
            <li><a href="#community">社区交流</a></li>
            <li><a href="#ranking">策略排行榜</a></li>
            <!-- Add more categories as needed -->
        </ul>
    </section>

    <section id="featured-topics">
        <h2>精选推荐</h2>
        <!-- Add content for featured topics here -->
    </section>

    <section id="news-insights">
        <h2>行业资讯与动态</h2>
        <!-- Add content for news and insights here -->
    </section>

    <section id="ranking-list">
        <h2>策略热度与效能排行榜</h2>
        <table>
            <thead>
                <tr>
                    <th>排名</th>
                    <th>策略名称</th>
                    <th>得分</th>
                    <th>作者</th>
                </tr>
            </thead>
            <tbody>
                <tr>
                    <td class="rank-num rank-top-1">1</td>
                    <td class="rank-text">策略A</td>
                    <td>95</td>
                    <td>用户1</td>
                </tr>
                <tr>
                    <td class="rank-num rank-top-2">2</td>
                    <td class="rank-text">策略B</td>
                    <td>90</td>
                    <td>用户2</td>
                </tr>
                <tr>
                    <td class="rank-num rank-top-3">3</td>
                    <td class="rank-text">策略C</td>
                    <td>85</td>
                    <td>用户3</td>
                </tr>
                <!-- Add more ranking items here -->
            </tbody>
        </table>
    </section>

    <section id="cases">
        <h2>案例研究</h2>
        <!-- Content for cases and evidence here -->
    </section>

    <section id="architecture">
        <h2>系统架构</h2>
        <!-- Content for system architecture here -->
    </section>

    <section id="community-reviews">
        <h2>社区评价</h2>
        <!-- Content for community reviews and testimonials here -->
    </section>

    <section id="partners">
        <h2>合作伙伴</h2>
        <!-- Content for partners and sponsors here -->
    </section>

    <section id="service-guarantees">
        <h2>服务保障</h2>
        <!-- Content for service guarantees here -->
    </section>

    <section id="trial-onboarding">
        <h2>免费试用</h2>
        <!-- Content for trial onboarding form here -->
    </section>

    <section id="faq">
        <h2>常见问题</h2>
        <!-- Content for FAQ accordion here -->
    </section>

</main>

The HTML structure for the main content sections is now defined with unique IDs for each. The ranking table with styled rank numbers and rank text is successfully implemented.  Further CSS rules will be added to stylize these sections.

Verified the HTML structure against the blueprint, confirming the presence and correct naming of all required sections.  The next step involves populating sections with placeholder content. Subsequently, I'll integrate provided image paths for background and cover images where appropriate.


background-color: var(--bg-alt);
            color: var(--text-body);
        }

        .rank-1 {
            background-color: #fef3c7;
            color: #b45309;
            border: 1px solid #fde68a;
        }

        .rank-2 {
            background-color: #f1f5f9;
            color: #475569;
            border: 1px solid #e2e8f0;
        }

        .rank-3 {
            background-color: #ffedd5;
            color: #c2410c;
            border: 1px solid #fed7aa;
        }

        .rank-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-heading);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .rank-metric {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-body);
            font-variant-numeric: tabular-nums;
        }

        .metric-up {
            color: var(--accent-mint);
        }

        .metric-intercept {
            color: var(--accent-amber-dark);
        }

        /* 6. 案例与证据区 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

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

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

        .case-img-wrap {
            height: 190px;
            overflow: hidden;
            background: #0f2b2b;
        }

        .case-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .case-body {
            padding: 24px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .case-tag {
            font-size: 12px;
            color: var(--primary);
            font-weight: 600;
            margin-bottom: 8px;
        }

        .case-name {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .case-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 20px;
            flex-grow: 1;
        }

        .case-metrics-box {
            background-color: var(--bg-alt);
            border-radius: var(--radius-md);
            padding: 14px 16px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
            border: 1px solid var(--border-color);
        }

        .metric-col h5 {
            font-size: 18px;
            font-weight: 800;
            color: var(--accent-mint);
            line-height: 1.2;
        }

        .metric-col span {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 7. 架构与理念区 */
        .arch-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .arch-media {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.12);
            box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
        }

        .arch-content h3 {
            font-size: 26px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 20px;
            line-height: 1.35;
        }

        .arch-list {
            display: flex;
            flex-direction: column;
            gap: 18px;
            margin-top: 24px;
        }

        .arch-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            transition: var(--transition);
        }

        .arch-item:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(16, 185, 129, 0.3);
        }

        .arch-item-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--accent-mint);
            margin-bottom: 6px;
        }

        .arch-item-desc {
            font-size: 13px;
            color: #94a3b8;
            line-height: 1.6;
        }

        /* 8. 评价墙 */
        .review-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .review-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .review-stars {
            color: var(--accent-amber);
            font-size: 14px;
            margin-bottom: 14px;
            letter-spacing: 2px;
        }

        .review-quote {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-body);
            margin-bottom: 20px;
            flex-grow: 1;
        }

        .review-author {
            display: flex;
            align-items: center;
            gap: 12px;
            padding-top: 16px;
            border-top: 1px solid var(--border-color);
        }

        .author-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
        }

        .author-name {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.3;
        }

        .author-role {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 9. 合作伙伴 */
        .partner-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 16px;
        }

        .partner-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 18px 12px;
            text-align: center;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-muted);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 72px;
        }

        .partner-item:hover {
            border-color: var(--accent-mint);
            color: var(--primary);
            box-shadow: var(--shadow-md);
        }

        /* 10. 服务保障条 */
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

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

        .guarantee-icon {
            font-size: 32px;
            margin-bottom: 12px;
            color: var(--accent-mint);
        }

        .guarantee-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 8px;
        }

        .guarantee-text {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 11. FAQ 手风琴 */
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item[open] {
            border-color: var(--accent-mint);
            box-shadow: var(--shadow-md);
        }

        .faq-question {
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-question::-webkit-details-marker {
            display: none;
        }

        .faq-question::after {
            content: '+';
            font-size: 20px;
            font-weight: 400;
            color: var(--text-muted);
            transition: transform 0.2s ease;
        }

        .faq-item[open] .faq-question::after {
            content: '−';
            color: var(--accent-mint);
        }

        .faq-answer {
            padding: 0 24px 20px;
            font-size: 14px;
            line-height: 1.75;
            color: var(--text-body);
            border-top: 1px solid rgba(15, 43, 43, 0.05);
            padding-top: 16px;
        }

        /* 12. 试用预约接入 */
        .trial-box {
            background: linear-gradient(135deg, var(--primary) 0%, #081717 100%);
            border-radius: 20px;
            padding: 56px 48px;
            color: #ffffff;
            box-shadow: var(--shadow-lg);
            border: 1px solid rgba(16, 185, 129, 0.3);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .trial-info h3 {
            font-size: 30px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
            color: #ffffff;
        }

        .trial-info p {
            font-size: 15px;
            color: #cbd5e1;
            line-height: 1.7;
            margin-bottom: 24px;
        }

        .trial-checklist {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .checklist-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: #e2e8f0;
        }

        .checklist-item i {
            color: var(--accent-mint);
            font-weight: 800;
        }

        .trial-form {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(12px);
            padding: 32px;
            border-radius: var(--radius-lg);
        }

        .form-group {
            margin-bottom: 18px;
        }

        .form-group label {
            display: block;
            font-size: 13px;
            color: #cbd5e1;
            margin-bottom: 6px;
            font-weight: 500;
        }

        .form-control {
            width: 100%;
            padding: 12px 14px;
            background: rgba(255, 255, 255, 0.95);
            border: 1px solid transparent;
            border-radius: var(--radius-md);
            font-size: 14px;
            color: #0f172a;
            outline: none;
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--accent-mint);
            box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.25);
        }

        .form-submit-btn {
            width: 100%;
            padding: 14px;
            background: var(--accent-mint);
            color: #ffffff;
            border: none;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(16, 185, 129, 0.35);
        }

        .form-submit-btn:hover {
            background: var(--accent-mint-hover);
            transform: translateY(-1px);
        }

        /* 移动端固定底栏 */
        .mobile-bottom-bar {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            background: rgba(10, 23, 23, 0.95);
            backdrop-filter: blur(10px);
            padding: 10px 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            z-index: 999;
            box-shadow: 0 -4px 12px rgba(0,0,0,0.2);
        }

        .mobile-bar-flex {
            display: flex;
            gap: 12px;
        }

        .mobile-bar-btn {
            flex: 1;
            padding: 10px;
            font-size: 13px;
            font-weight: 600;
            text-align: center;
            border-radius: var(--radius-md);
            color: #ffffff;
        }

        .mobile-bar-primary {
            background-color: var(--accent-mint);
        }

        .mobile-bar-secondary {
            background-color: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        /* 页脚 */
        .site-footer {
            background-color: #071212;
            color: #94a3b8;
            padding: 72px 0 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 56px;
        }

        .footer-logo {
            font-size: 18px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 14px;
            display: inline-block;
        }

        .footer-about {
            font-size: 13px;
            line-height: 1.7;
            color: #64748b;
            margin-bottom: 18px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #f1f5f9;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 8px;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 24px;
            height: 2px;
            background: var(--accent-mint);
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            color: #94a3b8;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--accent-mint);
            transform: translateX(3px);
        }

        .trust-info-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            font-size: 13px;
        }

        .trust-info-item {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            color: #94a3b8;
        }

        .footer-bottom {
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
            color: #64748b;
        }

        .footer-bottom-links {
            display: flex;
            gap: 20px;
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .featured-grid, .news-grid, .case-grid, .review-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .arch-wrap {
                grid-template-columns: 1fr;
            }
            .trial-box {
                grid-template-columns: 1fr;
                gap: 36px;
                padding: 40px 28px;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .partner-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (max-width: 768px) {
            .header-topbar {
                display: none;
            }
            .nav-menu {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .hero-section {
                padding: 60px 0 50px;
            }
            .hero-content h1 {
                font-size: 28px;
            }
            .section-block {
                padding: 56px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .category-grid, .featured-grid, .news-grid, .case-grid, .review-grid, .guarantee-grid {
                grid-template-columns: 1fr;
            }
            .ranking-table-head, .ranking-item {
                grid-template-columns: 44px 1.8fr 1fr;
            }
            .ranking-table-head > div:nth-child(4),
            .ranking-table-head > div:nth-child(5),
            .ranking-item > div:nth-child(4),
            .ranking-item > div:nth-child(5) {
                display: none;
            }
            .mobile-bottom-bar {
                display: block;
            }
            body {
                padding-bottom: 60px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 12px;
                text-align: center;
            }
            .partner-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }