:root {
            --hdsq1-primary: #1A73E8;
            --hdsq1-secondary: #34A853;
            --hdsq1-tertiary: #FBBC05;
            --hdsq1-accent: #EA4335;
            --hdsq1-bg: #ffffff;
            --hdsq1-text: #202124;
            --hdsq1-text-light: #5f6368;
            --hdsq1-glass: rgba(255, 255, 255, 0.85);
            --hdsq1-shadow: 0 8px 32px rgba(0,0,0,0.08);
            --hdsq1-radius: 16px;
        }

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

        body {
            font-family: "Inter", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
            color: var(--hdsq1-text);
            background-color: #f8f9fa;
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* 布局容器 */
        .hdsq1-container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* 导航栏 */
        .hdsq1-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            backdrop-filter: blur(10px);
            background: transparent;
            border-bottom: 1px solid transparent;
        }

        .hdsq1-header.scrolled {
            background: var(--hdsq1-glass);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            box-shadow: var(--hdsq1-shadow);
        }

        .hdsq1-nav-wrapper {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0;
            min-width: 0;
        }

        .hdsq1-logo {
            flex: 0 0 auto;
            min-width: 0;
        }

        .hdsq1-logo img {
            height: 40px;
            width: auto;
            display: block;
        }

        .hdsq1-nav-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 8px;
            min-width: 0;
        }

        .hdsq1-nav-item a {
            text-decoration: none;
            color: var(--hdsq1-text);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 20px;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .hdsq1-nav-item a:hover {
            background: rgba(26, 115, 232, 0.08);
            color: var(--hdsq1-primary);
        }

        .hdsq1-nav-item a.active {
            background: var(--hdsq1-primary);
            color: #fff;
        }

        /* Hero 区块 */
        .hdsq1-hero {
            padding: 160px 0 80px;
            position: relative;
            background: radial-gradient(circle at 10% 20%, rgba(26, 115, 232, 0.05) 0%, transparent 40%),
                        radial-gradient(circle at 90% 80%, rgba(52, 168, 83, 0.05) 0%, transparent 40%);
            overflow: hidden;
        }

        .hdsq1-liquid-shape {
            position: absolute;
            z-index: -1;
            background: linear-gradient(135deg, var(--hdsq1-primary), var(--hdsq1-secondary));
            filter: blur(80px);
            opacity: 0.15;
            border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
            animation: morphing 10s infinite alternate;
        }

        .hdsq1-shape-1 {
            width: 400px;
            height: 400px;
            top: -100px;
            right: -100px;
        }

        @keyframes morphing {
            0% { border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%; }
            100% { border-radius: 30% 60% 70% 40% / 50% 60% 30% 60%; }
        }

        .hdsq1-hero-content {
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
            word-break: keep-all;
            overflow-wrap: break-word;
        }

        .hdsq1-hero-title {
            font-size: clamp(2rem, 5vw, 3.5rem);
            font-weight: 800;
            color: var(--hdsq1-text);
            margin-bottom: 24px;
            line-height: 1.1;
            white-space: normal;
        }

        .hdsq1-hero-subtitle {
            font-size: clamp(1rem, 2vw + 0.5rem, 1.25rem);
            color: var(--hdsq1-text-light);
            margin-bottom: 40px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        /* 核心内容区 - 非对称栅格时间轴 */
        .hdsq1-timeline-section {
            padding: 64px 0;
            position: relative;
        }

        .hdsq1-timeline-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 48px;
            min-width: 0;
        }

        .hdsq1-log-card {
            background: #fff;
            border-radius: var(--hdsq1-radius);
            padding: 32px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.02);
            border: 1px solid rgba(0,0,0,0.05);
            transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
            position: relative;
            min-width: 0;
            word-break: break-word;
        }

        .hdsq1-log-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--hdsq1-shadow);
            border-color: var(--hdsq1-primary);
        }

        .hdsq1-log-version {
            display: inline-block;
            padding: 4px 16px;
            background: rgba(26, 115, 232, 0.1);
            color: var(--hdsq1-primary);
            border-radius: 30px;
            font-weight: 700;
            font-size: 14px;
            margin-bottom: 16px;
        }

        .hdsq1-log-date {
            float: right;
            font-size: 14px;
            color: var(--hdsq1-text-light);
        }

        .hdsq1-log-title {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--hdsq1-text);
        }

        .hdsq1-log-list {
            list-style: none;
            padding: 0;
        }

        .hdsq1-log-item {
            position: relative;
            padding-left: 24px;
            margin-bottom: 12px;
            font-size: 15px;
            color: var(--hdsq1-text-light);
            line-height: 1.7;
        }

        .hdsq1-log-item::before {
            content: "";
            position: absolute;
            left: 0;
            top: 10px;
            width: 8px;
            height: 8px;
            background: var(--hdsq1-secondary);
            border-radius: 50%;
        }

        .hdsq1-log-item:nth-child(2n)::before {
            background: var(--hdsq1-tertiary);
        }

        /* 动态内容标记 */
        .hdsq1-section-dynamic {
            margin-top: 48px;
        }

        /* 深度聚焦区块 */
        .hdsq1-feature-focus {
            padding: 96px 0;
            background: #202124;
            color: #fff;
            border-radius: 40px;
            margin: 64px 24px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            min-width: 0;
        }

        .hdsq1-focus-text {
            flex: 1 1 450px;
            padding: 48px;
            min-width: 0;
        }

        .hdsq1-focus-title {
            font-size: clamp(1.8rem, 3vw, 2.8rem);
            margin-bottom: 24px;
            color: #fff;
        }

        .hdsq1-focus-desc {
            font-size: 18px;
            color: rgba(255,255,255,0.7);
            margin-bottom: 32px;
        }

        .hdsq1-focus-tag {
            display: inline-block;
            background: var(--hdsq1-accent);
            color: #fff;
            padding: 4px 12px;
            border-radius: 4px;
            font-size: 12px;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }

        .hdsq1-btn-pulse {
            display: inline-block;
            padding: 16px 40px;
            background: var(--hdsq1-primary);
            color: #fff;
            text-decoration: none;
            border-radius: 30px;
            font-weight: 600;
            box-shadow: 0 0 0 0 rgba(26, 115, 232, 0.4);
            animation: pulse 2s infinite;
            transition: transform 0.3s ease;
        }

        .hdsq1-btn-pulse:hover {
            transform: scale(1.05);
        }

        @keyframes pulse {
            0% { box-shadow: 0 0 0 0 rgba(26, 115, 232, 0.7); }
            70% { box-shadow: 0 0 0 20px rgba(26, 115, 232, 0); }
            100% { box-shadow: 0 0 0 0 rgba(26, 115, 232, 0); }
        }

        /* 页脚 */
        .hdsq1-footer {
            background: #f1f3f4;
            padding: 80px 0 40px;
            border-top: 1px solid rgba(0,0,0,0.05);
        }

        .hdsq1-footer-content {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            justify-content: space-between;
            min-width: 0;
        }

        .hdsq1-footer-brand {
            flex: 1 1 300px;
            min-width: 0;
        }

        .hdsq1-footer-brand-name {
            font-size: 24px;
            font-weight: 800;
            color: var(--hdsq1-primary);
            margin-bottom: 16px;
        }

        .hdsq1-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
            min-width: 0;
        }

        .hdsq1-footer-column {
            min-width: 120px;
        }

        .hdsq1-footer-column h4 {
            margin-bottom: 24px;
            font-size: 16px;
            color: var(--hdsq1-text);
        }

        .hdsq1-footer-column ul {
            list-style: none;
        }

        .hdsq1-footer-column li {
            margin-bottom: 12px;
        }

        .hdsq1-footer-column a {
            text-decoration: none;
            color: var(--hdsq1-text-light);
            font-size: 14px;
            transition: color 0.3s;
        }

        .hdsq1-footer-column a:hover {
            color: var(--hdsq1-primary);
        }

        .hdsq1-copyright {
            margin-top: 64px;
            padding-top: 24px;
            border-top: 1px solid rgba(0,0,0,0.1);
            text-align: center;
            font-size: 13px;
            color: var(--hdsq1-text-light);
            width: 100%;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .hdsq1-nav-menu {
                display: none; /* 简化移动端，实际项目中需汉堡菜单 */
            }
            .hdsq1-timeline-grid {
                grid-template-columns: 1fr;
            }
            .hdsq1-feature-focus {
                margin: 32px 12px;
                border-radius: 20px;
            }
            .hdsq1-focus-text {
                padding: 32px;
            }
        }