:root {
            --hdsq1-primary: #1A73E8;
            --hdsq1-secondary: #34A853;
            --hdsq1-tertiary: #FBBC05;
            --hdsq1-accent: #EA4335;
            --hdsq1-text-main: #202124;
            --hdsq1-text-sub: #5f6368;
            --hdsq1-bg: #ffffff;
            --hdsq1-glass: rgba(255, 255, 255, 0.85);
            --hdsq1-space-unit: 8px;
        }

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

        body {
            font-family: "Segoe UI", Roboto, Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--hdsq1-text-main);
            line-height: 1.8;
            overflow-x: hidden;
            background-color: #f8f9fa;
        }

        /* 布局容器 */
        .hdsq1-wrapper {
            max-width: 1300px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* 导航栏 */
        .hdsq1-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            transition: all 0.3s ease;
            background: transparent;
        }

        .hdsq1-header.hdsq1-scrolled {
            background: var(--hdsq1-glass);
            backdrop-filter: blur(10px);
            box-shadow: 0 2px 20px rgba(0,0,0,0.05);
        }

        .hdsq1-nav-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            padding: 0 24px;
        }

        .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: 24px;
            min-width: 0;
        }

        .hdsq1-nav-menu a {
            text-decoration: none;
            color: var(--hdsq1-text-sub);
            font-weight: 500;
            font-size: 15px;
            transition: color 0.3s;
            position: relative;
        }

        .hdsq1-nav-menu a:hover, .hdsq1-nav-menu a.hdsq1-active {
            color: var(--hdsq1-primary);
        }

        .hdsq1-nav-menu a.hdsq1-active::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--hdsq1-primary);
            border-radius: 2px;
        }

        /* 非对称Hero区 */
        .hdsq1-hero {
            padding-top: 140px;
            padding-bottom: 80px;
            position: relative;
            overflow: hidden;
        }

        .hdsq1-liquid-bg {
            position: absolute;
            top: -10%;
            right: -10%;
            width: 60%;
            height: 80%;
            background: radial-gradient(circle, rgba(26,115,232,0.08) 0%, rgba(255,255,255,0) 70%);
            border-radius: 40% 60% 70% 30% / 40% 50% 60% 50%;
            z-index: -1;
            animation: hdsq1-wave 20s infinite alternate;
        }

        @keyframes hdsq1-wave {
            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(10deg); }
        }

        .hdsq1-hero-content {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
        }

        .hdsq1-hero-text {
            flex: 1;
            min-width: 320px;
            word-break: break-word;
        }

        .hdsq1-hero-text h1 {
            font-size: clamp(2.5rem, 5vw, 4rem);
            line-height: 1.1;
            margin-bottom: 24px;
            color: var(--hdsq1-text-main);
            font-weight: 800;
        }

        .hdsq1-hero-text p {
            font-size: clamp(1rem, 2vw + 0.5rem, 1.25rem);
            color: var(--hdsq1-text-sub);
            margin-bottom: 32px;
            max-width: 600px;
        }

        /* 解决办法核心卡片流布局 */
        .hdsq1-solution-section {
            padding: 80px 0;
        }

        .hdsq1-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
            margin-top: 48px;
        }

        .hdsq1-card {
            background: #fff;
            padding: 40px;
            border-radius: 24px;
            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;
            overflow: hidden;
            min-width: 0;
            word-break: break-word;
        }

        .hdsq1-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.08);
            border-color: var(--hdsq1-primary);
        }

        .hdsq1-card-step {
            position: absolute;
            top: -10px;
            right: -10px;
            font-size: 80px;
            font-weight: 900;
            color: rgba(26,115,232,0.05);
            line-height: 1;
        }

        .hdsq1-card h3 {
            font-size: 24px;
            margin-bottom: 16px;
            color: var(--hdsq1-primary);
        }

        .hdsq1-card ul {
            list-style: none;
        }

        .hdsq1-card li {
            margin-bottom: 12px;
            padding-left: 20px;
            position: relative;
            color: var(--hdsq1-text-sub);
        }

        .hdsq1-card li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--hdsq1-secondary);
            font-weight: bold;
        }

        /* 动态呼吸灯按钮 */
        .hdsq1-btn-pulse {
            display: inline-block;
            padding: 18px 48px;
            background: var(--hdsq1-primary);
            color: #fff;
            text-decoration: none;
            border-radius: 50px;
            font-weight: 600;
            font-size: 18px;
            box-shadow: 0 0 0 0 rgba(26, 115, 232, 0.4);
            animation: hdsq1-pulse 2s infinite;
            transition: transform 0.2s;
        }

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

        @keyframes hdsq1-pulse {
            0% { box-shadow: 0 0 0 0 rgba(26, 115, 232, 0.4); }
            70% { box-shadow: 0 0 0 20px rgba(26, 115, 232, 0); }
            100% { box-shadow: 0 0 0 0 rgba(26, 115, 232, 0); }
        }

        /* 交互式步骤区块 */
        .hdsq1-interactive-guide {
            background: #1a1a1a;
            color: #fff;
            padding: 96px 0;
            border-radius: 40px;
            margin: 48px 24px;
        }

        .hdsq1-guide-title {
            text-align: center;
            margin-bottom: 64px;
        }

        .hdsq1-guide-title h2 {
            font-size: clamp(2rem, 4vw, 3rem);
            margin-bottom: 16px;
        }

        .hdsq1-steps-flex {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-around;
            gap: 40px;
        }

        .hdsq1-step-item {
            flex: 1;
            min-width: 260px;
            text-align: center;
            padding: 24px;
        }

        .hdsq1-step-icon {
            width: 80px;
            height: 80px;
            background: rgba(255,255,255,0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 24px;
            font-size: 32px;
            border: 2px solid var(--hdsq1-tertiary);
        }

        /* 新闻动态区块标记 */
        .hdsq1-news-section {
            padding: 80px 0;
            background: #fff;
        }

        /* 页脚 */
        .hdsq1-footer {
            background: #f1f3f4;
            padding: 64px 0 32px;
            margin-top: 80px;
        }

        .hdsq1-footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 48px;
            margin-bottom: 48px;
        }

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

        .hdsq1-footer-links h5 {
            margin-bottom: 20px;
            font-size: 16px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

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

        .hdsq1-footer-links li {
            margin-bottom: 10px;
        }

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

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

        .hdsq1-footer-bottom {
            padding-top: 32px;
            border-top: 1px solid rgba(0,0,0,0.05);
            text-align: center;
            font-size: 13px;
            color: var(--hdsq1-text-sub);
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .hdsq1-nav-menu {
                display: none; /* 简化处理，实际开发可加汉堡菜单 */
            }
            .hdsq1-hero {
                padding-top: 100px;
                text-align: center;
            }
            .hdsq1-hero-text h1 {
                font-size: 2.5rem;
            }
            .hdsq1-hero-content {
                justify-content: center;
            }
            .hdsq1-interactive-guide {
                border-radius: 0;
                margin: 48px 0;
            }
        }