:root {
            --i0yps4-primary: #0066cc;
            --i0yps4-primary-light: #e6f0ff;
            --i0yps4-secondary: #ff9900;
            --i0yps4-text: #2d3748;
            --i0yps4-bg: #ffffff;
            --i0yps4-accent-bg: #f7fafc;
            --i0yps4-border: #e2e8f0;
            --i0yps4-merge-mine: #dcfce7;
            --i0yps4-merge-theirs: #fee2e2;
            --i0yps4-merge-base: #fef9c3;
            --i0yps4-radius: 12px;
            --i0yps4-shadow: 0 4px 20px rgba(0,0,0,0.08);
            --i0yps4-transition: all 0.3s ease;
        }

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

        body {
            font-family: "Inter", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
            color: var(--i0yps4-text);
            background-color: var(--i0yps4-bg);
            line-height: 1.8;
            overflow-x: hidden;
        }

        /* 布局容器 */
        .i0yps4-container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* 导航栏 */
        .i0yps4-navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            z-index: 1000;
            border-bottom: 1px solid var(--i0yps4-border);
            box-shadow: var(--i0yps4-shadow);
        }

        .i0yps4-nav-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            height: 72px;
            min-width: 0;
        }

        .i0yps4-logo {
            display: flex;
            align-items: center;
            min-width: 0;
        }

        .i0yps4-logo img {
            height: 40px;
            width: auto;
        }

        .i0yps4-nav-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            list-style: none;
            min-width: 0;
        }

        .i0yps4-nav-links a {
            text-decoration: none;
            color: var(--i0yps4-text);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 8px 12px;
            border-radius: 6px;
            transition: var(--i0yps4-transition);
            word-break: keep-all;
        }

        .i0yps4-nav-links a:hover {
            color: var(--i0yps4-primary);
            background: var(--i0yps4-primary-light);
        }

        .i0yps4-nav-links a.active {
            color: var(--i0yps4-primary);
            background: var(--i0yps4-primary-light);
            font-weight: 700;
        }

        /* Hero 区域 - 独特的三角形分割布局 */
        .i0yps4-hero {
            padding: 160px 0 80px;
            background: linear-gradient(135deg, #fdfbfb 0%, #ebedee 100%);
            position: relative;
            overflow: hidden;
        }

        .i0yps4-hero-content {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
            min-width: 0;
        }

        .i0yps4-hero-text {
            flex: 1;
            min-width: 320px;
            word-break: break-word;
        }

        .i0yps4-hero-text h1 {
            font-size: clamp(2rem, 4vw + 0.5rem, 3.5rem);
            line-height: 1.2;
            color: #1a202c;
            margin-bottom: 24px;
            font-weight: 800;
        }

        .i0yps4-hero-text p {
            font-size: clamp(1rem, 1vw + 0.5rem, 1.25rem);
            color: #4a5568;
            margin-bottom: 32px;
        }

        .i0yps4-hero-visual {
            flex: 1;
            min-width: 320px;
            display: flex;
            justify-content: center;
            position: relative;
        }

        /* 模拟3路合并的视觉效果 */
        .i0yps4-merge-viz {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            width: 100%;
            max-width: 450px;
            background: white;
            padding: 20px;
            border-radius: var(--i0yps4-radius);
            box-shadow: 20px 20px 60px rgba(0,0,0,0.1);
        }

        .i0yps4-viz-col {
            height: 200px;
            border-radius: 4px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            padding: 10px;
        }

        .i0yps4-viz-col span { height: 8px; border-radius: 4px; background: #edf2f7; width: 80%; }
        .i0yps4-viz-col.mine { background: var(--i0yps4-merge-mine); border: 1px solid #86efac; }
        .i0yps4-viz-col.base { background: var(--i0yps4-merge-base); border: 1px solid #fde047; }
        .i0yps4-viz-col.theirs { background: var(--i0yps4-merge-theirs); border: 1px solid #fca5a5; }

        /* 内容板块样式 */
        .i0yps4-section {
            padding: 96px 0;
            min-width: 0;
        }

        .i0yps4-section-title {
            text-align: center;
            margin-bottom: 64px;
        }

        .i0yps4-section-title h2 {
            font-size: clamp(1.5rem, 3vw, 2.5rem);
            color: #1a202c;
            margin-bottom: 16px;
        }

        .i0yps4-section-title .i0yps4-divider {
            width: 60px;
            height: 4px;
            background: var(--i0yps4-primary);
            margin: 0 auto;
            border-radius: 2px;
        }

        /* 教程步骤卡片 - 错落布局 */
        .i0yps4-steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
            min-width: 0;
        }

        .i0yps4-step-card {
            background: white;
            padding: 40px;
            border-radius: var(--i0yps4-radius);
            border: 1px solid var(--i0yps4-border);
            transition: var(--i0yps4-transition);
            position: relative;
            word-break: break-word;
        }

        .i0yps4-step-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--i0yps4-shadow);
            border-color: var(--i0yps4-primary);
        }

        .i0yps4-step-num {
            position: absolute;
            top: -20px;
            left: 40px;
            width: 40px;
            height: 40px;
            background: var(--i0yps4-primary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.2rem;
        }

        .i0yps4-step-card h3 {
            margin-top: 10px;
            margin-bottom: 16px;
            color: #2d3748;
        }

        /* 信息提示区 */
        .i0yps4-info-box {
            background: var(--i0yps4-primary-light);
            border-left: 5px solid var(--i0yps4-primary);
            padding: 24px;
            border-radius: 0 var(--i0yps4-radius) var(--i0yps4-radius) 0;
            margin: 40px 0;
        }

        /* 对比示意图 */
        .i0yps4-comparison-demo {
            display: flex;
            flex-wrap: wrap;
            gap: 2px;
            background: #cbd5e0;
            padding: 2px;
            border-radius: 8px;
            margin: 24px 0;
        }

        .i0yps4-demo-pane {
            flex: 1;
            min-width: 200px;
            background: white;
            padding: 16px;
            font-family: monospace;
            font-size: 0.9rem;
        }

        .i0yps4-pane-label {
            display: block;
            font-size: 0.75rem;
            text-transform: uppercase;
            color: #718096;
            margin-bottom: 8px;
            font-weight: 700;
        }

        .i0yps4-code-line {
            white-space: pre-wrap;
            word-break: break-all;
            margin-bottom: 4px;
        }

        .i0yps4-diff-added { background: #dcfce7; }
        .i0yps4-diff-removed { background: #fee2e2; }

        /* 动态内容标记区块 */
        .i0yps4-news-section {
            background: var(--i0yps4-accent-bg);
            border-radius: 24px;
            padding: 64px 40px;
            margin-bottom: 64px;
        }

        /* 页脚 */
        .i0yps4-footer {
            background: #1a202c;
            color: #cbd5e0;
            padding: 80px 0 40px;
        }

        .i0yps4-footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 48px;
            margin-bottom: 64px;
            min-width: 0;
        }

        .i0yps4-footer-brand h2 {
            color: white;
            margin-bottom: 16px;
            font-size: 1.5rem;
        }

        .i0yps4-footer-links h4 {
            color: white;
            margin-bottom: 24px;
        }

        .i0yps4-footer-links ul {
            list-style: none;
        }

        .i0yps4-footer-links li {
            margin-bottom: 12px;
        }

        .i0yps4-footer-links a {
            color: #a0aec0;
            text-decoration: none;
            transition: var(--i0yps4-transition);
        }

        .i0yps4-footer-links a:hover {
            color: white;
        }

        .i0yps4-footer-bottom {
            text-align: center;
            padding-top: 40px;
            border-top: 1px solid #2d3748;
            font-size: 0.85rem;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .i0yps4-nav-inner {
                height: auto;
                padding: 16px 0;
            }
            .i0yps4-nav-links {
                width: 100%;
                margin-top: 16px;
                justify-content: center;
            }
            .i0yps4-hero {
                padding-top: 120px;
            }
            .i0yps4-hero-visual {
                order: -1;
            }
        }