:root {
            --ztdk-primary-blue: #4285F4;
            --ztdk-primary-red: #EA4335;
            --ztdk-primary-yellow: #FBBC05;
            --ztdk-primary-green: #34A853;
            --ztdk-bg-light: #f8f9fa;
            --ztdk-text-dark: #202124;
            --ztdk-text-muted: #5f6368;
            --ztdk-white: #ffffff;
            --ztdk-spacing-unit: 8px;
            --ztdk-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
            color: var(--ztdk-text-dark);
            background-color: var(--ztdk-bg-light);
            line-height: 1.6;
            overflow-x: hidden;
            word-break: break-word;
        }

        /* 导航系统 */
        .ztdk-nav-container {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            box-shadow: 0 4px 30px rgba(0,0,0,0.03);
        }

        .ztdk-nav-wrapper {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            flex-wrap: wrap;
        }

        .ztdk-logo {
            flex-shrink: 0;
            display: flex;
            align-items: center;
        }

        .ztdk-logo img {
            height: 32px;
            width: auto;
        }

        .ztdk-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 24px;
            min-width: 0;
        }

        .ztdk-menu-link {
            text-decoration: none;
            color: var(--ztdk-text-muted);
            font-size: 15px;
            font-weight: 500;
            position: relative;
            padding: 8px 0;
            transition: var(--ztdk-transition);
            white-space: nowrap;
        }

        .ztdk-menu-link:hover, .ztdk-menu-link.ztdk-active {
            color: var(--ztdk-primary-blue);
        }

        /* 动态光迹悬停效果 */
        .ztdk-menu-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--ztdk-primary-blue), var(--ztdk-primary-red), var(--ztdk-primary-yellow), var(--ztdk-primary-green));
            transition: width 0.4s ease;
        }

        .ztdk-menu-link:hover::after, .ztdk-menu-link.ztdk-active::after {
            width: 100%;
        }

        /* Hero 区布局 - 对角线分割设计 */
        .ztdk-hero {
            position: relative;
            padding: 160px 32px 100px;
            background: var(--ztdk-white);
            overflow: hidden;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            text-align: center;
        }

        .ztdk-hero::before {
            content: '';
            position: absolute;
            top: -20%;
            right: -10%;
            width: 60%;
            height: 140%;
            background: radial-gradient(circle, rgba(66, 133, 244, 0.05) 0%, rgba(255,255,255,0) 70%);
            transform: rotate(-15deg);
            z-index: 0;
        }

        .ztdk-hero-content {
            max-width: 900px;
            position: relative;
            z-index: 1;
            min-width: 0;
        }

        .ztdk-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
            font-weight: 800;
            line-height: 1.1;
            margin-bottom: 32px;
            letter-spacing: -0.02em;
            color: var(--ztdk-text-dark);
            word-break: keep-all;
        }

        .ztdk-hero-title span {
            background: linear-gradient(120deg, var(--ztdk-primary-blue), var(--ztdk-primary-green));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .ztdk-hero-subtitle {
            font-size: clamp(1.1rem, 1.5vw + 0.5rem, 1.5rem);
            color: var(--ztdk-text-muted);
            margin-bottom: 48px;
            max-width: 750px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.8;
        }

        .ztdk-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
            min-width: 0;
        }

        .ztdk-btn {
            padding: 18px 40px;
            border-radius: 50px;
            font-size: 18px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--ztdk-transition);
            display: inline-block;
        }

        .ztdk-btn-primary {
            background-color: var(--ztdk-primary-blue);
            color: var(--ztdk-white);
            box-shadow: 0 10px 20px rgba(66, 133, 244, 0.3);
        }

        .ztdk-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 30px rgba(66, 133, 244, 0.4);
        }

        .ztdk-btn-secondary {
            background-color: var(--ztdk-white);
            color: var(--ztdk-text-dark);
            border: 2px solid #e0e0e0;
        }

        .ztdk-btn-secondary:hover {
            border-color: var(--ztdk-primary-blue);
            background-color: rgba(66, 133, 244, 0.02);
        }

        /* 技术渲染引擎区块 */
        .ztdk-section {
            padding: 96px 32px;
            max-width: 1400px;
            margin: 0 auto;
        }

        .ztdk-tech-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
            margin-top: 64px;
        }

        .ztdk-card {
            background: var(--ztdk-white);
            padding: 48px;
            border-radius: 24px;
            border: 1px solid rgba(0,0,0,0.03);
            transition: var(--ztdk-transition);
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .ztdk-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.05);
        }

        .ztdk-card-icon {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            background: rgba(66, 133, 244, 0.1);
            color: var(--ztdk-primary-blue);
        }

        .ztdk-card-title {
            font-size: 24px;
            font-weight: 700;
        }

        .ztdk-card-text {
            color: var(--ztdk-text-muted);
            font-size: 16px;
            line-height: 1.7;
        }

        .ztdk-badge-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 12px;
        }

        .ztdk-badge {
            background: #f1f3f4;
            padding: 4px 12px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 600;
            color: var(--ztdk-text-muted);
        }

        /* 多进程安全区块 - 左右交替感 */
        .ztdk-feature-split {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 64px;
            margin-bottom: 96px;
        }

        .ztdk-feature-image {
            flex: 1;
            min-width: 320px;
            background: linear-gradient(135deg, #ffffff 0%, #f1f3f4 100%);
            border-radius: 32px;
            padding: 40px;
            position: relative;
            box-shadow: inset 0 0 20px rgba(0,0,0,0.02);
        }

        .ztdk-feature-image::after {
            content: 'SECURE SANDBOX';
            position: absolute;
            font-size: 80px;
            font-weight: 900;
            color: rgba(0,0,0,0.03);
            bottom: 20px;
            right: 20px;
            pointer-events: none;
        }

        .ztdk-feature-text {
            flex: 1;
            min-width: 320px;
        }

        .ztdk-section-tag {
            text-transform: uppercase;
            letter-spacing: 0.1em;
            font-weight: 700;
            font-size: 14px;
            color: var(--ztdk-primary-red);
            margin-bottom: 16px;
            display: block;
        }

        .ztdk-section-title {
            font-size: clamp(2rem, 3vw, 2.5rem);
            margin-bottom: 24px;
            font-weight: 700;
        }

        /* 动态内容区块 - 资讯/修复指南 */
        .ztdk-dynamic-section {
            background: #202124;
            color: var(--ztdk-white);
            border-radius: 48px;
            margin: 64px 32px;
            padding: 80px 64px;
        }

        .ztdk-dynamic-header {
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            margin-bottom: 48px;
            flex-wrap: wrap;
            gap: 24px;
        }

        .ztdk-article-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 24px;
        }

        .ztdk-article-card {
            background: rgba(255, 255, 255, 0.05);
            padding: 32px;
            border-radius: 20px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: var(--ztdk-transition);
            text-decoration: none;
            color: inherit;
        }

        .ztdk-article-card:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--ztdk-primary-yellow);
        }

        .ztdk-article-tag {
            color: var(--ztdk-primary-yellow);
            font-size: 12px;
            font-weight: 700;
            margin-bottom: 12px;
            display: block;
        }

        /* 页脚品牌区 */
        .ztdk-footer {
            background: var(--ztdk-white);
            padding: 80px 32px 40px;
            border-top: 1px solid #eee;
        }

        .ztdk-footer-content {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
        }

        .ztdk-footer-brand {
            font-size: 24px;
            font-weight: 700;
            color: var(--ztdk-text-dark);
            margin-bottom: 24px;
        }

        .ztdk-footer-links {
            display: flex;
            gap: 64px;
            flex-wrap: wrap;
        }

        .ztdk-footer-column h4 {
            margin-bottom: 24px;
            font-size: 16px;
        }

        .ztdk-footer-column ul {
            list-style: none;
        }

        .ztdk-footer-column li {
            margin-bottom: 12px;
        }

        .ztdk-footer-column a {
            color: var(--ztdk-text-muted);
            text-decoration: none;
            transition: var(--ztdk-transition);
        }

        .ztdk-footer-column a:hover {
            color: var(--ztdk-primary-blue);
        }

        .ztdk-copyright {
            margin-top: 80px;
            padding-top: 32px;
            border-top: 1px solid #eee;
            color: var(--ztdk-text-muted);
            font-size: 14px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .ztdk-menu {
                gap: 12px;
            }
            .ztdk-hero {
                padding-top: 120px;
            }
        }

        @media (max-width: 768px) {
            .ztdk-nav-wrapper {
                height: auto;
                padding: 16px;
            }
            .ztdk-menu {
                width: 100%;
                justify-content: center;
                margin-top: 16px;
                gap: 8px;
            }
            .ztdk-menu-link {
                font-size: 13px;
            }
            .ztdk-hero {
                padding: 100px 24px 60px;
            }
            .ztdk-dynamic-section {
                padding: 48px 24px;
                margin: 32px 16px;
            }
            .ztdk-footer-links {
                gap: 32px;
            }
        }