:root {
            --i0yps4-primary: #005a9e;
            --i0yps4-primary-light: #e1f0fb;
            --i0yps4-secondary: #2b3a4a;
            --i0yps4-accent: #ff8c00;
            --i0yps4-bg: #f8f9fa;
            --i0yps4-white: #ffffff;
            --i0yps4-text: #333333;
            --i0yps4-text-light: #666666;
            --i0yps4-diff-added: #e6ffec;
            --i0yps4-diff-removed: #ffebe9;
            --i0yps4-border: #d1d9e0;
            --i0yps4-radius: 12px;
            --i0yps4-shadow: 0 10px 30px rgba(0,0,0,0.08);
            --i0yps4-container-width: 1300px;
        }

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

        body {
            font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            background-color: var(--i0yps4-bg);
            color: var(--i0yps4-text);
            line-height: 1.7;
            overflow-x: hidden;
            word-break: keep-all;
        }

        /* 导航栏 */
        .i0yps4-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            z-index: 1000;
            border-bottom: 1px solid var(--i0yps4-border);
            transition: all 0.3s ease;
        }

        .i0yps4-nav-container {
            max-width: var(--i0yps4-container-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 72px;
            flex-wrap: wrap;
        }

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

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

        .i0yps4-nav-menu {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            min-width: 0;
        }

        .i0yps4-nav-menu li {
            margin-left: 12px;
            min-width: 0;
        }

        .i0yps4-nav-menu a {
            text-decoration: none;
            color: var(--i0yps4-text);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 6px;
            transition: all 0.2s;
            white-space: nowrap;
        }

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

        .i0yps4-nav-menu a.i0yps4-active {
            color: var(--i0yps4-white);
            background: var(--i0yps4-primary);
        }

        /* Hero 区块 - 独特非对称布局 */
        .i0yps4-hero {
            padding: 160px 24px 80px;
            background: linear-gradient(135deg, #ffffff 0%, #f0f4f8 100%);
            position: relative;
            overflow: hidden;
        }

        .i0yps4-hero::before {
            content: "";
            position: absolute;
            top: -10%;
            right: -5%;
            width: 40%;
            height: 120%;
            background: var(--i0yps4-primary-light);
            transform: skewX(-15deg);
            z-index: 0;
            opacity: 0.5;
        }

        .i0yps4-hero-content {
            max-width: var(--i0yps4-container-width);
            margin: 0 auto;
            position: relative;
            z-index: 1;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
        }

        .i0yps4-hero-text {
            flex: 1;
            min-width: 320px;
            padding-right: 48px;
            word-break: break-word;
        }

        .i0yps4-hero-text h1 {
            font-size: clamp(2.5rem, 5vw, 4rem);
            line-height: 1.1;
            color: var(--i0yps4-secondary);
            margin-bottom: 24px;
            font-weight: 800;
        }

        .i0yps4-hero-text p {
            font-size: clamp(1.1rem, 2vw, 1.3rem);
            color: var(--i0yps4-text-light);
            margin-bottom: 32px;
            max-width: 600px;
        }

        /* 配置网格 */
        .i0yps4-config-section {
            padding: 80px 24px;
            max-width: var(--i0yps4-container-width);
            margin: 0 auto;
        }

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

        .i0yps4-section-title h2 {
            font-size: clamp(1.8rem, 3vw, 2.5rem);
            color: var(--i0yps4-secondary);
            margin-bottom: 16px;
        }

        .i0yps4-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
        }

        .i0yps4-card {
            background: var(--i0yps4-white);
            padding: 40px;
            border-radius: var(--i0yps4-radius);
            box-shadow: var(--i0yps4-shadow);
            border: 1px solid transparent;
            transition: all 0.3s ease;
            min-width: 0;
            display: flex;
            flex-direction: column;
        }

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

        .i0yps4-card-tag {
            display: inline-block;
            padding: 4px 12px;
            background: var(--i0yps4-primary-light);
            color: var(--i0yps4-primary);
            font-size: 12px;
            font-weight: bold;
            border-radius: 20px;
            margin-bottom: 20px;
            width: fit-content;
        }

        .i0yps4-card h3 {
            font-size: 22px;
            margin-bottom: 16px;
            color: var(--i0yps4-secondary);
        }

        .i0yps4-card p {
            color: var(--i0yps4-text-light);
            font-size: 15px;
            margin-bottom: 20px;
        }

        .i0yps4-code-block {
            background: #f1f3f5;
            padding: 12px;
            border-radius: 6px;
            font-family: "Cascadia Code", Consolas, monospace;
            font-size: 13px;
            color: #d63384;
            margin-top: auto;
        }

        /* 深度定制区域 - 交错布局 */
        .i0yps4-deep-dive {
            background: var(--i0yps4-secondary);
            color: var(--i0yps4-white);
            padding: 96px 24px;
        }

        .i0yps4-dive-container {
            max-width: var(--i0yps4-container-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
            align-items: center;
        }

        .i0yps4-dive-image {
            flex: 1;
            min-width: 320px;
            background: rgba(255,255,255,0.05);
            border-radius: var(--i0yps4-radius);
            padding: 32px;
            border: 1px solid rgba(255,255,255,0.1);
        }

        .i0yps4-dive-text {
            flex: 1.2;
            min-width: 320px;
        }

        .i0yps4-dive-text h2 {
            font-size: 32px;
            margin-bottom: 24px;
            color: var(--i0yps4-accent);
        }

        .i0yps4-dive-list {
            list-style: none;
        }

        .i0yps4-dive-list li {
            margin-bottom: 24px;
            padding-left: 28px;
            position: relative;
        }

        .i0yps4-dive-list li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--i0yps4-accent);
            font-weight: bold;
        }

        /* 动态内容区 */
        .i0yps4-dynamic-section {
            padding: 80px 24px;
            background: var(--i0yps4-white);
        }

        .i0yps4-news-card {
            border-left: 4px solid var(--i0yps4-primary);
            padding: 24px;
            background: var(--i0yps4-bg);
            margin-bottom: 16px;
            border-radius: 0 var(--i0yps4-radius) var(--i0yps4-radius) 0;
        }

        /* 页脚 */
        .i0yps4-footer {
            background: #1a1a1a;
            color: #999;
            padding: 64px 24px;
            text-align: center;
        }

        .i0yps4-footer-brand {
            font-size: 24px;
            font-weight: bold;
            color: var(--i0yps4-white);
            margin-bottom: 16px;
        }

        .i0yps4-footer-links {
            display: flex;
            justify-content: center;
            gap: 24px;
            margin-bottom: 32px;
            flex-wrap: wrap;
        }

        .i0yps4-footer-links a {
            color: #999;
            text-decoration: none;
            transition: color 0.3s;
        }

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

        .i0yps4-copyright {
            font-size: 14px;
            border-top: 1px solid #333;
            padding-top: 32px;
            max-width: 600px;
            margin: 0 auto;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .i0yps4-nav-container {
                height: auto;
                padding: 16px;
            }
            .i0yps4-nav-menu {
                margin-top: 16px;
                justify-content: center;
                width: 100%;
            }
            .i0yps4-nav-menu li {
                margin: 4px;
            }
            .i0yps4-hero {
                padding-top: 120px;
                text-align: center;
            }
            .i0yps4-hero-text {
                padding-right: 0;
            }
            .i0yps4-hero::before {
                display: none;
            }
        }