:root {
            --h0u505-chrome-blue: #4285f4;
            --h0u505-chrome-red: #ea4335;
            --h0u505-chrome-yellow: #fbbc05;
            --h0u505-chrome-green: #34a853;
            --h0u505-bg-light: #f8f9fa;
            --h0u505-text-dark: #202124;
            --h0u505-text-gray: #5f6368;
            --h0u505-white: #ffffff;
            --h0u505-shadow: 0 4px 20px rgba(0,0,0,0.08);
            --h0u505-radius: 16px;
            --h0u505-container-width: 1100px;
        }

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

        body {
            font-family: "Segoe UI", Roboto, Helvetica, Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
            background-color: var(--h0u505-bg-light);
            color: var(--h0u505-text-dark);
            line-height: 1.6;
            word-break: keep-all;
            overflow-x: hidden;
        }

        /* Layout & Container */
        .h0u505-wrapper {
            max-width: var(--h0u505-container-width);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* Navigation */
        .h0u505-header {
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            width: 100%;
        }

        .h0u505-nav-container {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            max-width: var(--h0u505-container-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .h0u505-logo {
            flex: 0 0 auto;
            min-width: 0;
        }

        .h0u505-logo img {
            height: 36px;
            display: block;
        }

        .h0u505-nav-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 16px;
            min-width: 0;
        }

        .h0u505-nav-item a {
            text-decoration: none;
            color: var(--h0u505-text-gray);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 8px;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .h0u505-nav-item a:hover {
            color: var(--h0u505-chrome-blue);
            background: rgba(66, 133, 244, 0.05);
        }

        .h0u505-nav-item.h0u505-active a {
            color: var(--h0u505-chrome-blue);
            background: rgba(66, 133, 244, 0.1);
        }

        /* Hero Section */
        .h0u505-hero {
            padding: 96px 0 64px;
            text-align: center;
            background: linear-gradient(180deg, #fff 0%, #f8f9fa 100%);
        }

        .h0u505-hero-title {
            font-size: clamp(2rem, 5vw, 3.5rem);
            font-weight: 700;
            margin-bottom: 24px;
            line-height: 1.2;
            word-break: break-word;
            color: var(--h0u505-text-dark);
        }

        .h0u505-hero-subtitle {
            font-size: clamp(1.1rem, 2vw, 1.4rem);
            color: var(--h0u505-text-gray);
            max-width: 800px;
            margin: 0 auto 48px;
            word-break: break-word;
        }

        /* Matrix Section */
        .h0u505-matrix-section {
            padding: 64px 0;
        }

        .h0u505-section-tag {
            display: inline-block;
            background: var(--h0u505-chrome-blue);
            color: white;
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 14px;
            margin-bottom: 16px;
        }

        .h0u505-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
            margin-top: 40px;
        }

        .h0u505-card {
            background: var(--h0u505-white);
            padding: 40px;
            border-radius: var(--h0u505-radius);
            box-shadow: var(--h0u505-shadow);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            display: flex;
            flex-direction: column;
            min-width: 0;
            border: 1px solid rgba(0,0,0,0.03);
        }

        .h0u505-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 30px rgba(0,0,0,0.12);
        }

        .h0u505-card-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 24px;
            font-weight: bold;
            color: white;
        }

        .h0u505-card-title {
            font-size: 1.5rem;
            margin-bottom: 16px;
            color: var(--h0u505-text-dark);
        }

        .h0u505-card-text {
            color: var(--h0u505-text-gray);
            margin-bottom: 24px;
            flex-grow: 1;
            word-break: break-word;
        }

        .h0u505-card-meta {
            font-size: 13px;
            font-weight: 600;
            padding-top: 16px;
            border-top: 1px solid #eee;
            color: var(--h0u505-chrome-blue);
        }

        /* Vision Timeline */
        .h0u505-vision-section {
            padding: 80px 0;
            background: #fff;
            border-radius: 40px;
            margin: 40px 0;
        }

        .h0u505-timeline {
            display: flex;
            flex-wrap: wrap;
            gap: 0;
            position: relative;
            margin-top: 48px;
        }

        .h0u505-timeline-item {
            flex: 1;
            min-width: 280px;
            padding: 32px;
            border-left: 4px solid var(--h0u505-bg-light);
            position: relative;
            transition: border-color 0.3s;
        }

        .h0u505-timeline-item:hover {
            border-left-color: var(--h0u505-chrome-green);
        }

        .h0u505-year {
            font-size: 2.5rem;
            font-weight: 800;
            color: #e8eaed;
            margin-bottom: 8px;
            line-height: 1;
        }

        .h0u505-focus {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--h0u505-text-dark);
        }

        .h0u505-status {
            display: inline-block;
            font-size: 12px;
            padding: 2px 10px;
            background: #e6f4ea;
            color: var(--h0u505-chrome-green);
            border-radius: 4px;
            font-weight: bold;
        }

        /* Dynamic Content Section */
        .h0u505-dynamic-section {
            padding: 64px 0;
        }

        .h0u505-article-row {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-top: 32px;
        }

        /* Footer */
        .h0u505-footer {
            background: #202124;
            color: #f1f3f4;
            padding: 64px 0 32px;
            margin-top: 80px;
        }

        .h0u505-footer-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 40px;
        }

        .h0u505-footer-brand {
            flex: 1;
            min-width: 240px;
        }

        .h0u505-footer-brand h2 {
            font-size: 24px;
            margin-bottom: 16px;
            color: #fff;
        }

        .h0u505-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            flex: 2;
            min-width: 0;
        }

        .h0u505-footer-column {
            flex: 1;
            min-width: 150px;
        }

        .h0u505-footer-column h4 {
            margin-bottom: 20px;
            color: #9aa0a6;
            font-size: 14px;
            text-transform: uppercase;
        }

        .h0u505-footer-column ul {
            list-style: none;
        }

        .h0u505-footer-column li {
            margin-bottom: 12px;
        }

        .h0u505-footer-column a {
            color: #bdc1c6;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.2s;
        }

        .h0u505-footer-column a:hover {
            color: #fff;
        }

        .h0u505-copyright {
            margin-top: 64px;
            padding-top: 32px;
            border-top: 1px solid #3c4043;
            text-align: center;
            font-size: 13px;
            color: #9aa0a6;
        }

        /* Responsive Adjustments */
        @media (max-width: 768px) {
            .h0u505-nav-container {
                flex-direction: column;
                gap: 16px;
            }
            .h0u505-nav-menu {
                justify-content: center;
            }
            .h0u505-hero {
                padding: 64px 0;
            }
            .h0u505-timeline-item {
                border-left: none;
                border-top: 4px solid var(--h0u505-bg-light);
            }
        }