:root {
            --t618w1-accent: #188038;
            --t618w1-bg: #f8f9fa;
            --t618w1-text: #202124;
            --t618w1-text-light: #5f6368;
            --t618w1-white: #ffffff;
            --t618w1-card-shadow: 0 4px 20px rgba(0,0,0,0.08);
            --t618w1-spacing-unit: 8px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            line-height: 1.7;
            color: var(--t618w1-text);
            background-color: var(--t618w1-bg);
            overflow-x: hidden;
            word-break: break-word;
        }

        /* 布局容器 */
        .t618w1-container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 calc(var(--t618w1-spacing-unit) * 3);
            width: 100%;
        }

        /* 导航栏 */
        .t618w1-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            transition: all 0.3s ease;
        }

        .t618w1-nav-wrapper {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            height: 72px;
            min-width: 0;
        }

        .t618w1-logo {
            flex: 0 0 auto;
            min-width: 0;
        }

        .t618w1-logo img {
            height: 32px;
            display: block;
        }

        .t618w1-nav-list {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: calc(var(--t618w1-spacing-unit) * 3);
            min-width: 0;
        }

        .t618w1-nav-item a {
            text-decoration: none;
            color: var(--t618w1-text-light);
            font-size: 0.95rem;
            font-weight: 500;
            transition: color 0.3s ease;
            position: relative;
            padding: 4px 0;
        }

        .t618w1-nav-item a:hover {
            color: var(--t618w1-accent);
        }

        .t618w1-nav-item a.t618w1-active {
            color: var(--t618w1-accent);
        }

        .t618w1-nav-item a.t618w1-active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--t618w1-accent);
            border-radius: 2px;
        }

        /* Hero 区 - 独特控制台布局 */
        .t618w1-hero {
            padding-top: 160px;
            padding-bottom: 80px;
            background: linear-gradient(135deg, #ffffff 0%, #f1f3f4 100%);
            position: relative;
            overflow: hidden;
        }

        .t618w1-hero-content {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
            min-width: 0;
        }

        .t618w1-hero-text {
            flex: 1;
            min-width: 320px;
        }

        .t618w1-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4rem);
            line-height: 1.1;
            font-weight: 800;
            color: var(--t618w1-text);
            margin-bottom: 24px;
            word-break: keep-all;
        }

        .t618w1-hero-subtitle {
            font-size: clamp(1.1rem, 2vw + 0.5rem, 1.4rem);
            color: var(--t618w1-text-light);
            max-width: 600px;
            margin-bottom: 32px;
        }

        .t618w1-hero-visual {
            flex: 1;
            min-width: 320px;
            background: #202124;
            border-radius: 12px;
            padding: 24px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.2);
            font-family: 'Courier New', Courier, monospace;
            color: #fff;
            position: relative;
        }

        .t618w1-hero-visual::before {
            content: 'Console';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            background: #3c4043;
            padding: 4px 12px;
            font-size: 12px;
            border-radius: 12px 12px 0 0;
            color: #bdc1c6;
        }

        .t618w1-code-line {
            margin-top: 12px;
            display: block;
        }

        .t618w1-code-keyword { color: #f28b82; }
        .t618w1-code-func { color: #8ab4f8; }
        .t618w1-code-string { color: #81c995; }

        /* 内核演进时间轴 */
        .t618w1-section {
            padding: 96px 0;
        }

        .t618w1-section-title {
            font-size: clamp(1.8rem, 3vw, 2.5rem);
            text-align: center;
            margin-bottom: 64px;
            font-weight: 700;
        }

        .t618w1-timeline {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
        }

        .t618w1-timeline-card {
            background: var(--t618w1-white);
            padding: 40px;
            border-radius: 16px;
            box-shadow: var(--t618w1-card-shadow);
            transition: transform 0.3s ease;
            border-top: 4px solid var(--t618w1-accent);
        }

        .t618w1-timeline-card:hover {
            transform: translateY(-8px);
        }

        .t618w1-milestone {
            font-weight: 800;
            color: var(--t618w1-accent);
            margin-bottom: 16px;
            font-size: 1.2rem;
        }

        .t618w1-stat-item {
            margin-bottom: 12px;
            padding-left: 20px;
            position: relative;
        }

        .t618w1-stat-item::before {
            content: '›';
            position: absolute;
            left: 0;
            color: var(--t618w1-accent);
            font-weight: bold;
        }

        /* 插件集中心 - 网格布局 */
        .t618w1-extension-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 24px;
        }

        .t618w1-extension-cat {
            grid-column: 1 / -1;
            font-size: 1.5rem;
            font-weight: 700;
            margin: 32px 0 16px;
            color: var(--t618w1-text);
            border-left: 4px solid var(--t618w1-accent);
            padding-left: 16px;
        }

        .t618w1-extension-item {
            background: var(--t618w1-white);
            padding: 24px;
            border-radius: 12px;
            border: 1px solid #e8eaed;
            transition: all 0.3s ease;
        }

        .t618w1-extension-item:hover {
            border-color: var(--t618w1-accent);
            box-shadow: 0 8px 16px rgba(24, 128, 56, 0.1);
        }

        .t618w1-extension-name {
            font-weight: 700;
            margin-bottom: 8px;
            font-size: 1.1rem;
        }

        .t618w1-extension-desc {
            font-size: 0.9rem;
            color: var(--t618w1-text-light);
        }

        /* FAQ 区 */
        .t618w1-faq-container {
            max-width: 800px;
            margin: 0 auto;
        }

        .t618w1-faq-item {
            margin-bottom: 24px;
            background: #fff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 10px rgba(0,0,0,0.03);
        }

        .t618w1-faq-q {
            padding: 24px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: #fdfdfd;
        }

        .t618w1-faq-a {
            padding: 0 24px 24px;
            color: var(--t618w1-text-light);
            font-size: 1rem;
            line-height: 1.8;
        }

        /* 页脚 */
        .t618w1-footer {
            background: #202124;
            color: #bdc1c6;
            padding: 64px 0 32px;
        }

        .t618w1-footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
            margin-bottom: 48px;
        }

        .t618w1-footer-brand {
            flex: 1;
            min-width: 200px;
        }

        .t618w1-footer-brand-name {
            color: #fff;
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .t618w1-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
        }

        .t618w1-footer-col h4 {
            color: #fff;
            margin-bottom: 24px;
            font-size: 1rem;
        }

        .t618w1-footer-col ul {
            list-style: none;
        }

        .t618w1-footer-col li {
            margin-bottom: 12px;
        }

        .t618w1-footer-col a {
            color: #bdc1c6;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .t618w1-footer-col a:hover {
            color: var(--t618w1-accent);
        }

        .t618w1-footer-bottom {
            padding-top: 32px;
            border-top: 1px solid #3c4043;
            text-align: center;
            font-size: 0.85rem;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .t618w1-nav-list {
                display: none; /* 简化演示：移动端隐藏菜单，实际项目应使用汉堡菜单 */
            }
            .t618w1-hero {
                padding-top: 120px;
                text-align: center;
            }
            .t618w1-hero-content {
                flex-direction: column;
            }
            .t618w1-hero-visual {
                width: 100%;
            }
            .t618w1-section {
                padding: 64px 0;
            }
        }