:root {
            --hdsq1-primary: #1A73E8;
            --hdsq1-secondary: #34A853;
            --hdsq1-tertiary: #FBBC05;
            --hdsq1-danger: #EA4335;
            --hdsq1-text: #202124;
            --hdsq1-bg: #FFFFFF;
            --hdsq1-gray: #5F6368;
            --hdsq1-light-gray: #F8F9FA;
            --hdsq1-container-width: 1400px;
        }

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

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', -apple-system, sans-serif;
            color: var(--hdsq1-text);
            background-color: var(--hdsq1-bg);
            line-height: 1.8;
            overflow-x: hidden;
            word-break: break-word;
        }

        /* 导航栏设计 */
        .hdsq1-navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            transition: all 0.3s ease;
        }

        .hdsq1-nav-container {
            max-width: var(--hdsq1-container-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .hdsq1-logo {
            display: flex;
            align-items: center;
            min-width: 0;
        }

        .hdsq1-logo img {
            height: 32px;
            width: auto;
        }

        .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-gray);
            font-size: 14px;
            font-weight: 400;
            padding: 8px 16px;
            border-radius: 20px;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .hdsq1-nav-item a:hover {
            background: rgba(26, 115, 232, 0.05);
            color: var(--hdsq1-primary);
        }

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

        /* Hero 区块 - 非对称布局 */
        .hdsq1-hero {
            padding: 160px 24px 96px;
            background: radial-gradient(circle at 90% 10%, rgba(26, 115, 232, 0.05) 0%, transparent 40%);
            position: relative;
            overflow: hidden;
        }

        .hdsq1-liquid-shape {
            position: absolute;
            top: -100px;
            right: -100px;
            width: 600px;
            height: 600px;
            background: linear-gradient(135deg, rgba(26, 115, 232, 0.1), rgba(251, 188, 5, 0.1));
            filter: blur(80px);
            border-radius: 40% 60% 70% 30% / 40% 50% 60% 50%;
            z-index: -1;
            animation: liquidMove 20s infinite alternate;
        }

        @keyframes liquidMove {
            0% { border-radius: 40% 60% 70% 30% / 40% 50% 60% 50%; transform: rotate(0deg); }
            100% { border-radius: 60% 40% 30% 70% / 50% 60% 40% 60%; transform: rotate(15deg); }
        }

        .hdsq1-hero-content {
            max-width: var(--hdsq1-container-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
            gap: 64px;
            align-items: center;
        }

        .hdsq1-hero-title {
            font-size: clamp(2rem, 4vw + 1rem, 3.5rem);
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 24px;
            color: var(--hdsq1-text);
            word-break: keep-all;
        }

        .hdsq1-hero-subtitle {
            font-size: clamp(1rem, 1vw + 0.5rem, 1.25rem);
            color: var(--hdsq1-gray);
            margin-bottom: 48px;
            max-width: 600px;
        }

        /* 动态呼吸灯下载按钮 */
        .hdsq1-btn-download {
            display: inline-flex;
            align-items: center;
            padding: 18px 48px;
            background: var(--hdsq1-primary);
            color: #fff;
            text-decoration: none;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.1rem;
            box-shadow: 0 10px 20px rgba(26, 115, 232, 0.2);
            transition: all 0.3s ease;
            position: relative;
            animation: breathing 2.5s infinite;
        }

        @keyframes breathing {
            0% { box-shadow: 0 0 0 0 rgba(26, 115, 232, 0.4); }
            70% { box-shadow: 0 0 0 15px rgba(26, 115, 232, 0); }
            100% { box-shadow: 0 0 0 0 rgba(26, 115, 232, 0); }
        }

        .hdsq1-btn-download:hover {
            transform: translateY(-3px);
            background: #1765cc;
        }

        /* 版本列表区块 */
        .hdsq1-section {
            padding: 96px 24px;
            max-width: var(--hdsq1-container-width);
            margin: 0 auto;
        }

        .hdsq1-section-title {
            font-size: 2.5rem;
            margin-bottom: 48px;
            text-align: center;
            position: relative;
        }

        .hdsq1-section-title::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--hdsq1-tertiary);
            margin: 16px auto 0;
            border-radius: 2px;
        }

        .hdsq1-version-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
        }

        .hdsq1-version-card {
            background: #fff;
            border: 1px solid rgba(0,0,0,0.06);
            border-radius: 24px;
            padding: 32px;
            transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
            position: relative;
            overflow: hidden;
        }

        .hdsq1-version-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.08);
            border-color: var(--hdsq1-primary);
        }

        .hdsq1-version-tag {
            display: inline-block;
            padding: 4px 12px;
            background: var(--hdsq1-light-gray);
            border-radius: 8px;
            font-size: 12px;
            color: var(--hdsq1-gray);
            margin-bottom: 16px;
        }

        .hdsq1-version-number {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 8px;
            display: block;
        }

        .hdsq1-version-desc {
            color: var(--hdsq1-gray);
            font-size: 0.95rem;
            margin-bottom: 24px;
        }

        .hdsq1-download-link {
            color: var(--hdsq1-primary);
            text-decoration: none;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        /* 资讯区块 */
        .hdsq1-news-section {
            background-color: var(--hdsq1-light-gray);
            border-radius: 48px;
            padding: 80px 48px;
            margin: 48px auto;
        }

        .hdsq1-news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
        }

        .hdsq1-news-item {
            background: #fff;
            padding: 24px;
            border-radius: 16px;
        }

        .hdsq1-news-date {
            font-size: 13px;
            color: var(--hdsq1-tertiary);
            font-weight: 600;
        }

        .hdsq1-news-title {
            margin: 12px 0;
            font-size: 1.1rem;
            line-height: 1.4;
        }

        /* 页脚设计 */
        .hdsq1-footer {
            background: #202124;
            color: #fff;
            padding: 80px 24px 40px;
        }

        .hdsq1-footer-content {
            max-width: var(--hdsq1-container-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 48px;
        }

        .hdsq1-footer-brand {
            grid-column: span 2;
        }

        .hdsq1-footer-brand-name {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: #fff;
        }

        .hdsq1-footer-links h4 {
            margin-bottom: 24px;
            color: #9aa0a6;
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

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

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

        .hdsq1-footer-links a {
            color: #e8eaed;
            text-decoration: none;
            font-size: 0.9rem;
            transition: color 0.3s;
        }

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

        .hdsq1-copyright {
            margin-top: 80px;
            padding-top: 40px;
            border-top: 1px solid rgba(255,255,255,0.1);
            text-align: center;
            color: #9aa0a6;
            font-size: 0.85rem;
        }

        /* 响应式适配 */
        @media (max-width: 992px) {
            .hdsq1-hero-content {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .hdsq1-hero-subtitle {
                margin-left: auto;
                margin-right: auto;
            }
        }

        @media (max-width: 768px) {
            .hdsq1-nav-menu {
                display: none; /* 简化移动端，实际项目中应有汉堡菜单 */
            }
            .hdsq1-section-title {
                font-size: 2rem;
            }
            .hdsq1-news-section {
                padding: 40px 24px;
                border-radius: 24px;
            }
        }