:root {
            --i5tw1i-primary: #FF6C37;
            --i5tw1i-primary-dark: #E05621;
            --i5tw1i-bg: #0D0E12;
            --i5tw1i-card-bg: #1A1C23;
            --i5tw1i-text: #F2F2F2;
            --i5tw1i-text-muted: #A0A0A0;
            --i5tw1i-border: rgba(255, 255, 255, 0.1);
            --i5tw1i-white: #ffffff;
            --i5tw1i-gradient: linear-gradient(135deg, #FF6C37 0%, #FF8F5E 100%);
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--i5tw1i-bg);
            color: var(--i5tw1i-text);
            line-height: 1.6;
            overflow-x: hidden;
            word-break: keep-all;
        }

        /* 布局容器 */
        .i5tw1i-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 5vw;
            width: 100%;
        }

        /* 导航栏 */
        .i5tw1i-header {
            position: fixed;
            top: 24px;
            left: 50%;
            transform: translateX(-50%);
            width: 90vw;
            max-width: 1200px;
            z-index: 1000;
            background: rgba(26, 28, 35, 0.8);
            backdrop-filter: blur(12px);
            border: 1px solid var(--i5tw1i-border);
            border-radius: 50px;
            padding: 8px 24px;
            transition: all 0.3s ease;
        }

        .i5tw1i-nav-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }

        .i5tw1i-logo {
            display: flex;
            align-items: center;
            min-width: 0;
        }

        .i5tw1i-logo img {
            height: 32px;
            width: auto;
        }

        .i5tw1i-nav-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 4px;
            min-width: 0;
        }

        .i5tw1i-nav-item a {
            text-decoration: none;
            color: var(--i5tw1i-text-muted);
            font-size: 14px;
            padding: 8px 12px;
            border-radius: 20px;
            transition: all 0.2s ease;
            white-space: nowrap;
        }

        .i5tw1i-nav-item a:hover {
            color: var(--i5tw1i-primary);
        }

        .i5tw1i-nav-item.active a {
            color: var(--i5tw1i-white);
            background: var(--i5tw1i-primary);
        }

        /* Hero 区 */
        .i5tw1i-hero {
            padding-top: 180px;
            padding-bottom: 96px;
            text-align: center;
            background: radial-gradient(circle at top right, rgba(255, 108, 55, 0.1), transparent 40%),
                        radial-gradient(circle at bottom left, rgba(255, 108, 55, 0.05), transparent 40%);
        }

        .i5tw1i-hero-title {
            font-size: clamp(2.5rem, 6vw, 4.5rem);
            font-weight: 800;
            line-height: 1.1;
            margin-bottom: 24px;
            background: linear-gradient(to bottom, #fff 0%, #aaa 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            word-break: break-word;
        }

        .i5tw1i-hero-subtitle {
            font-size: clamp(1rem, 2vw + 0.5rem, 1.25rem);
            color: var(--i5tw1i-text-muted);
            max-width: 800px;
            margin: 0 auto 48px;
            word-break: break-word;
        }

        .i5tw1i-hero-console {
            background: #000;
            border: 1px solid var(--i5tw1i-border);
            border-radius: 16px;
            padding: 32px;
            max-width: 900px;
            margin: 0 auto;
            text-align: left;
            box-shadow: 0 40px 100px rgba(0,0,0,0.5);
            font-family: 'Courier New', Courier, monospace;
            position: relative;
        }

        .i5tw1i-console-dot {
            display: flex;
            gap: 8px;
            margin-bottom: 20px;
        }

        .i5tw1i-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
        }

        .i5tw1i-dot-red { background: #ff5f56; }
        .i5tw1i-dot-yellow { background: #ffbd2e; }
        .i5tw1i-dot-green { background: #27c93f; }

        .i5tw1i-console-text {
            color: #27c93f;
            font-size: 14px;
            overflow-wrap: break-word;
        }

        /* 核心层次区块 */
        .i5tw1i-layers-section {
            padding: 96px 0;
        }

        .i5tw1i-section-head {
            margin-bottom: 64px;
            max-width: 600px;
        }

        .i5tw1i-badge {
            display: inline-block;
            background: rgba(255, 108, 55, 0.1);
            color: var(--i5tw1i-primary);
            padding: 4px 12px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: bold;
            text-transform: uppercase;
            margin-bottom: 16px;
        }

        .i5tw1i-layer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 32px;
        }

        .i5tw1i-layer-card {
            background: var(--i5tw1i-card-bg);
            border: 1px solid var(--i5tw1i-border);
            border-radius: 24px;
            padding: 40px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
            min-width: 0;
        }

        .i5tw1i-layer-card:hover {
            transform: translateY(-8px);
            border-color: var(--i5tw1i-primary);
        }

        .i5tw1i-layer-id {
            font-size: 48px;
            font-weight: 900;
            color: rgba(255, 255, 255, 0.03);
            position: absolute;
            top: 20px;
            right: 20px;
        }

        .i5tw1i-layer-title {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--i5tw1i-primary);
        }

        .i5tw1i-layer-logic {
            font-size: 15px;
            color: var(--i5tw1i-text-muted);
            margin-bottom: 24px;
            line-height: 1.8;
        }

        .i5tw1i-cap-list {
            list-style: none;
        }

        .i5tw1i-cap-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 14px;
            margin-bottom: 12px;
            padding-left: 20px;
            position: relative;
        }

        .i5tw1i-cap-item::before {
            content: "";
            position: absolute;
            left: 0;
            top: 8px;
            width: 6px;
            height: 6px;
            background: var(--i5tw1i-primary);
            border-radius: 50%;
        }

        /* 动态文章区块 */
        .i5tw1i-dynamic-section {
            padding: 80px 0;
            background: rgba(255, 255, 255, 0.02);
        }

        .i5tw1i-article-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
        }

        .i5tw1i-article-card {
            flex: 1;
            min-width: 300px;
            background: var(--i5tw1i-card-bg);
            padding: 24px;
            border-radius: 16px;
            border-left: 4px solid var(--i5tw1i-primary);
        }

        /* 页脚 */
        .i5tw1i-footer {
            padding: 64px 0 32px;
            border-top: 1px solid var(--i5tw1i-border);
            margin-top: 96px;
        }

        .i5tw1i-footer-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
            margin-bottom: 48px;
        }

        .i5tw1i-footer-brand {
            flex: 1;
            min-width: 250px;
        }

        .i5tw1i-brand-name {
            font-size: 24px;
            font-weight: 800;
            color: var(--i5tw1i-primary);
            margin-bottom: 16px;
        }

        .i5tw1i-footer-links {
            display: flex;
            gap: 64px;
            flex-wrap: wrap;
        }

        .i5tw1i-footer-col h4 {
            margin-bottom: 20px;
            font-size: 16px;
        }

        .i5tw1i-footer-col ul {
            list-style: none;
        }

        .i5tw1i-footer-col li {
            margin-bottom: 12px;
        }

        .i5tw1i-footer-col a {
            color: var(--i5tw1i-text-muted);
            text-decoration: none;
            font-size: 14px;
            transition: color 0.2s;
        }

        .i5tw1i-footer-col a:hover {
            color: var(--i5tw1i-primary);
        }

        .i5tw1i-copyright {
            text-align: center;
            font-size: 13px;
            color: var(--i5tw1i-text-muted);
            border-top: 1px solid var(--i5tw1i-border);
            padding-top: 32px;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .i5tw1i-header {
                top: 0;
                width: 100%;
                border-radius: 0;
                padding: 12px;
            }
            .i5tw1i-nav-menu {
                display: none; /* 简化移动端，通常会有汉堡菜单 */
            }
            .i5tw1i-hero {
                padding-top: 120px;
            }
            .i5tw1i-layer-grid {
                grid-template-columns: 1fr;
            }
        }