:root {
            --tr7nn-primary: #4285F4;
            --tr7nn-secondary: #EA4335;
            --tr7nn-tertiary: #FBBC04;
            --tr7nn-quaternary: #34A853;
            --tr7nn-bg-dark: #0B0E14;
            --tr7nn-card-bg: #1A1D23;
            --tr7nn-text-main: #E8EAED;
            --tr7nn-text-dim: #9AA0A6;
            --tr7nn-radius: 16px;
            --tr7nn-container-width: 1300px;
        }

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

        body {
            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            background-color: var(--tr7nn-bg-dark);
            color: var(--tr7nn-text-main);
            line-height: 1.6;
            overflow-x: hidden;
            word-break: break-word;
        }

        /* 导航栏 */
        .tr7nn-navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(11, 14, 20, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            height: 72px;
            display: flex;
            align-items: center;
        }

        .tr7nn-nav-container {
            max-width: var(--tr7nn-container-width);
            margin: 0 auto;
            width: 100%;
            padding: 0 32px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }

        .tr7nn-logo {
            display: flex;
            align-items: center;
            min-width: 0;
        }

        .tr7nn-logo img {
            height: 32px;
            width: auto;
        }

        .tr7nn-nav-menu {
            display: flex;
            list-style: none;
            gap: 16px;
            flex-wrap: wrap;
            min-width: 0;
        }

        .tr7nn-nav-item {
            min-width: 0;
        }

        .tr7nn-nav-link {
            text-decoration: none;
            color: var(--tr7nn-text-dim);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 8px;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .tr7nn-nav-link:hover {
            color: var(--tr7nn-text-main);
            background: rgba(255, 255, 255, 0.05);
        }

        .tr7nn-nav-link.tr7nn-active {
            color: var(--tr7nn-primary);
            background: rgba(66, 133, 244, 0.1);
        }

        /* Hero 区块 - 独特非对称布局 */
        .tr7nn-hero {
            padding: 160px 32px 96px;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 80vh;
            background: radial-gradient(circle at 80% 20%, rgba(66, 133, 244, 0.15), transparent 40%),
                        radial-gradient(circle at 10% 80%, rgba(234, 67, 53, 0.1), transparent 40%);
        }

        .tr7nn-hero-wrapper {
            max-width: var(--tr7nn-container-width);
            width: 100%;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 64px;
        }

        .tr7nn-hero-content {
            flex: 1;
            min-width: 320px;
        }

        .tr7nn-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
            line-height: 1.1;
            font-weight: 800;
            margin-bottom: 24px;
            background: linear-gradient(135deg, #fff 0%, #9AA0A6 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            word-break: keep-all;
        }

        .tr7nn-hero-subtitle {
            font-size: clamp(1.1rem, 1.5vw + 0.5rem, 1.4rem);
            color: var(--tr7nn-text-dim);
            margin-bottom: 40px;
            max-width: 600px;
            line-height: 1.6;
        }

        .tr7nn-hero-visual {
            flex: 1;
            min-width: 320px;
            position: relative;
            display: flex;
            justify-content: center;
        }

        /* 模拟浏览器深色模式的CSS图形 */
        .tr7nn-browser-mockup {
            width: 100%;
            max-width: 500px;
            aspect-ratio: 4/3;
            background: #202124;
            border-radius: 20px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            box-shadow: 0 32px 64px rgba(0, 0, 0, 0.5);
            padding: 16px;
            position: relative;
            overflow: hidden;
        }

        .tr7nn-mockup-header {
            display: flex;
            gap: 8px;
            margin-bottom: 24px;
        }

        .tr7nn-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
        }

        .tr7nn-mockup-body {
            height: calc(100% - 40px);
            background: #292a2d;
            border-radius: 8px;
            display: flex;
            flex-direction: column;
            padding: 24px;
            gap: 16px;
        }

        .tr7nn-skeleton-line {
            height: 12px;
            background: rgba(255,255,255,0.05);
            border-radius: 6px;
            width: 100%;
        }

        /* 矩阵功能区 */
        .tr7nn-section {
            padding: 96px 32px;
            max-width: var(--tr7nn-container-width);
            margin: 0 auto;
        }

        .tr7nn-section-title {
            font-size: clamp(1.8rem, 3vw, 2.5rem);
            text-align: center;
            margin-bottom: 64px;
        }

        .tr7nn-matrix-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
        }

        .tr7nn-matrix-card {
            background: var(--tr7nn-card-bg);
            border: 1px solid rgba(255, 255, 255, 0.05);
            padding: 40px;
            border-radius: var(--tr7nn-radius);
            transition: transform 0.3s ease, border-color 0.3s ease;
            display: flex;
            flex-direction: column;
            gap: 16px;
            min-width: 0;
        }

        .tr7nn-matrix-card:hover {
            transform: translateY(-8px);
            border-color: var(--tr7nn-primary);
        }

        .tr7nn-protocol-tag {
            font-family: monospace;
            color: var(--tr7nn-primary);
            font-size: 14px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .tr7nn-matrix-func {
            font-size: 18px;
            font-weight: 600;
            color: #fff;
        }

        .tr7nn-matrix-desc {
            color: var(--tr7nn-text-dim);
            font-size: 15px;
        }

        .tr7nn-matrix-status {
            margin-top: auto;
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--tr7nn-quaternary);
        }

        /* 动态内容区块标记 */
        .tr7nn-news-section {
            background: #12151A;
            padding: 96px 0;
        }

        /* 底部 */
        .tr7nn-footer {
            padding: 64px 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            margin-top: 64px;
        }

        .tr7nn-footer-container {
            max-width: var(--tr7nn-container-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
        }

        .tr7nn-footer-brand {
            flex: 1;
            min-width: 240px;
        }

        .tr7nn-footer-brand-name {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
            color: #fff;
        }

        .tr7nn-footer-links {
            display: flex;
            gap: 64px;
            flex-wrap: wrap;
            min-width: 0;
        }

        .tr7nn-footer-col {
            min-width: 140px;
        }

        .tr7nn-footer-col h4 {
            margin-bottom: 24px;
            font-size: 16px;
            color: #fff;
        }

        .tr7nn-footer-col ul {
            list-style: none;
        }

        .tr7nn-footer-col li {
            margin-bottom: 12px;
        }

        .tr7nn-footer-col a {
            text-decoration: none;
            color: var(--tr7nn-text-dim);
            font-size: 14px;
            transition: color 0.3s;
        }

        .tr7nn-footer-col a:hover {
            color: var(--tr7nn-primary);
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .tr7nn-nav-menu {
                display: none; /* 简化演示，手机端通常有汉堡菜单 */
            }
            .tr7nn-hero {
                padding-top: 120px;
                text-align: center;
            }
            .tr7nn-hero-wrapper {
                flex-direction: column;
            }
            .tr7nn-hero-subtitle {
                margin: 0 auto 40px;
            }
            .tr7nn-matrix-grid {
                grid-template-columns: 1fr;
            }
        }

        .tr7nn-cta-button {
            display: inline-block;
            background: var(--tr7nn-primary);
            color: white;
            padding: 16px 32px;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
            box-shadow: 0 4px 14px rgba(66, 133, 244, 0.39);
        }

        .tr7nn-cta-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(66, 133, 244, 0.45);
            background: #3367D6;
        }