:root {
            --primary-color: #e53e3e;
            --primary-hover: #c53030;
            --text-dark: #2a2a2d;
            --text-muted: #4b5563;
            --bg-light: #f8fafc;
            --bg-gradient: radial-gradient(circle at 80% 50%, #e0f2fe 0%, #ffffff 70%);
            --card-bg: #ffffff;
            --border-color: #e2e8f0;
            --accent-blue: #2563eb;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Noto Sans SC', sans-serif;
            color: var(--text-dark);
            background-color: #ffffff;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            line-height: 1.7;
        }
        .header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 40px;
            margin: 0 auto;
            width: 100%;
            position: fixed;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            z-index: 10;
            background: #eff8ff;
            border-bottom: 1px solid rgba(62, 95, 255, 0.1);
        }
        .header-left,
        .header-right {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 22px;
            color: #0640b7;
            text-decoration: none;
        }
        .logo img {
            height: 32px;
            width: auto;
            display: block;
        }
        .nav-links {
            display: flex;
            gap: 24px;
            list-style: none;
        }
        .nav-item {
            display: flex;
            align-items: center;
            gap: 4px;
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
        }
        .nav-item a {
            color: var(--text-dark);
            text-decoration: none;
        }
        .nav-secondary {
            display: flex;
            align-items: center;
            gap: 20px;
            list-style: none;
            font-size: 14px;
        }
        .nav-secondary a {
            color: var(--text-dark);
            text-decoration: none;
        }
        .nav-secondary li {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .lang-selector {
            display: flex;
            align-items: center;
            cursor: pointer;
        }
        .btn-primary {
            background-color: var(--primary-color);
            color: #ffffff;
            padding: 10px 24px;
            border-radius: 9999px;
            font-weight: 700;
            text-decoration: none;
            font-size: 14px;
            transition: background-color 0.2s;
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            background-color: var(--primary-hover);
        }
        .guide-hero {
            background: var(--bg-gradient);
            padding: 180px 40px 60px 40px;
            border-bottom: 1px solid var(--border-color);
        }
        .guide-hero-container {
            max-width: 900px;
            margin: 0 auto;
            text-align: center;
        }
        .meta-category {
            color: var(--accent-blue);
            font-size: 14px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            margin-bottom: 16px;
            display: inline-block;
        }
        .guide-title {
            font-size: 44px;
            font-weight: 700;
            line-height: 1.25;
            color: #0f172a;
            margin-bottom: 24px;
        }
        .guide-meta-info {
            display: flex;
            justify-content: center;
            gap: 32px;
            font-size: 14px;
            color: var(--text-muted);
            border-bottom: none;
            padding-bottom: 0;
        }
        .guide-main-layout {
            max-width: 1200px;
            margin: 0 auto;
            padding: 60px 40px;
            display: grid;
            grid-template-columns: 280px 1fr;
            gap: 60px;
        }
        .sidebar-toc {
            position: sticky;
            top: 120px;
            height: max-content;
            background: var(--card-bg);
            border-radius: 16px;
            padding: 24px;
            border: 1px solid var(--border-color);
        }
        .toc-title {
            font-size: 16px;
            font-weight: 700;
            color: #0f172a;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .toc-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
            margin-bottom: 24px;
        }
        .toc-item a {
            display: block;
            padding: 8px 12px;
            color: var(--text-muted);
            text-decoration: none;
            font-size: 14px;
            border-radius: 8px;
            transition: all 0.2s;
        }
        .toc-item a:hover,
        .toc-item.active a {
            background-color: #eff6ff;
            color: var(--accent-blue);
            font-weight: 500;
        }
        .toc-search {
            margin-top: 16px;
        }
        .search-input {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 14px;
            outline: none;
            transition: border-color 0.2s;
        }
        .search-input:focus {
            border-color: var(--accent-blue);
        }

        /* 创意版块：平台快速选择卡片 */
        .platform-quick-select {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-bottom: 40px;
        }
        .platform-select-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 20px;
            text-align: center;
            text-decoration: none;
            color: var(--text-dark);
            transition: all 0.25s;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 10px;
        }
        .platform-select-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 24px rgba(0, 0, 0, 0.06);
            border-color: var(--accent-blue);
        }
        .platform-select-icon {
            font-size: 36px;
            line-height: 1;
        }
        .platform-select-name {
            font-weight: 700;
            font-size: 16px;
            color: #1e293b;
        }
        .platform-select-desc {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.4;
        }

        /* 快速入门区域 */
        .quickstart-banner {
            background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
            border-radius: 20px;
            padding: 32px;
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 48px;
            gap: 40px;
        }
        .quickstart-content {
            flex: 1;
        }
        .quickstart-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.15);
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            margin-bottom: 20px;
        }
        .quickstart-steps {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .qs-step {
            display: flex;
            align-items: flex-start;
            gap: 12px;
        }
        .qs-number {
            width: 28px;
            height: 28px;
            background: #ffffff;
            color: #1e3a8a;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
            flex-shrink: 0;
        }
        .qs-text strong {
            display: block;
            font-size: 16px;
            margin-bottom: 4px;
        }
        .qs-text p {
            font-size: 14px;
            opacity: 0.85;
            margin: 0;
        }
        .quickstart-image svg {
            opacity: 0.8;
        }

        .article-body h2 {
            font-size: 28px;
            color: #0f172a;
            margin: 40px 0 20px 0;
            padding-bottom: 8px;
            border-bottom: 1px solid #f1f5f9;
        }
        .article-body h3 {
            font-size: 20px;
            color: #1e293b;
            margin: 28px 0 16px 0;
        }
        .article-body p {
            margin-bottom: 20px;
            color: #334155;
        }

        /* 教程卡片网格 */
        .tutorial-cards-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            margin: 32px 0;
        }
        .tutorial-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 24px;
            transition: box-shadow 0.2s, transform 0.2s;
        }
        .tutorial-card:hover {
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.04);
            transform: translateY(-2px);
        }
        .tutorial-icon {
            font-size: 32px;
            margin-bottom: 12px;
        }
        .tutorial-card h3 {
            margin: 0 0 8px 0;
            font-size: 18px;
            color: #0f172a;
        }
        .tutorial-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .card-link {
            color: var(--accent-blue);
            font-weight: 600;
            text-decoration: none;
            font-size: 14px;
        }
        .card-link:hover {
            text-decoration: underline;
        }

        /* 安装步骤可视化 */
        .install-visual-steps {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: #f1f5f9;
            border-radius: 16px;
            padding: 24px 16px;
            margin: 32px 0;
            overflow-x: auto;
            gap: 8px;
        }
        .visual-step {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            min-width: 80px;
            flex: 1;
        }
        .visual-step-circle {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--accent-blue);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            margin-bottom: 8px;
            font-size: 18px;
        }
        .visual-step-label {
            font-size: 13px;
            font-weight: 500;
            color: #1e293b;
            line-height: 1.3;
        }
        .visual-step-arrow {
            font-size: 20px;
            color: #94a3b8;
            margin: 0 4px;
        }

        .site-footer {
            background-color: #0b0e17;
            color: #9ca3af;
            padding: 80px 40px 40px 40px;
            margin-top: 100px;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            border-bottom: 1px solid #22293a;
            padding-bottom: 48px;
        }
        .footer-col h4 {
            color: #ffffff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 24px;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .footer-links a {
            color: #9ca3af;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.2s;
        }
        .footer-links a:hover {
            color: #ffffff;
        }

        @media (max-width: 1024px) {
            .guide-main-layout {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .sidebar-toc {
                display: flex;
                flex-wrap: wrap;
                align-items: center;
                gap: 16px;
                position: static;
            }
            .toc-list {
                flex-direction: row;
                flex-wrap: wrap;
                margin-bottom: 0;
            }
            .toc-search {
                margin-left: auto;
            }
            .platform-quick-select {
                grid-template-columns: repeat(2, 1fr);
            }
            .tutorial-cards-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .install-visual-steps {
                flex-wrap: wrap;
                justify-content: center;
            }
            .visual-step-arrow {
                display: none;
            }
        }
        @media (max-width: 768px) {
            .nav-links,
            .nav-secondary {
                display: none;
            }
            .guide-hero {
                padding: 140px 20px 40px 20px;
            }
            .guide-main-layout {
                padding: 40px 20px;
            }
            .guide-title {
                font-size: 32px;
            }
            .quickstart-banner {
                flex-direction: column;
                text-align: center;
            }
            .platform-quick-select {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }