:root {
            --gd6iw-primary: #ff4d4f;
            --gd6iw-primary-hover: #ff7875;
            --gd6iw-accent: #1890ff;
            --gd6iw-text-dark: #262626;
            --gd6iw-text-light: #595959;
            --gd6iw-bg-soft: #f5f5f5;
            --gd6iw-white: #ffffff;
            --gd6iw-max-width: 1400px;
            --gd6iw-transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
            color: var(--gd6iw-text-dark);
            line-height: 1.6;
            background-color: var(--gd6iw-white);
            overflow-x: hidden;
            word-break: keep-all;
        }

        /* 布局通用规范 */
        .gd6iw-container {
            max-width: var(--gd6iw-max-width);
            margin: 0 auto;
            padding: 0 32px;
            width: 100%;
        }

        .gd6iw-flex {
            display: flex;
            flex-wrap: wrap;
        }

        .gd6iw-flex-item {
            min-width: 0;
        }

        /* 导航栏 */
        .gd6iw-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(15px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            transition: var(--gd6iw-transition);
        }

        .gd6iw-nav-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 80px;
            flex-wrap: wrap;
        }

        .gd6iw-logo img {
            height: 40px;
            display: block;
        }

        .gd6iw-menu {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }

        .gd6iw-menu-item a {
            text-decoration: none;
            color: var(--gd6iw-text-dark);
            padding: 8px 16px;
            font-size: 1rem;
            font-weight: 500;
            transition: var(--gd6iw-transition);
            position: relative;
        }

        .gd6iw-menu-item a:hover,
        .gd6iw-menu-item a.gd6iw-active {
            color: var(--gd6iw-primary);
        }

        .gd6iw-menu-item a.gd6iw-active::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 16px;
            right: 16px;
            height: 3px;
            background: var(--gd6iw-primary);
            border-radius: 2px;
        }

        /* Hero 区块 - 独特非对称布局 */
        .gd6iw-hero {
            padding-top: 160px;
            padding-bottom: 96px;
            background: radial-gradient(circle at 90% 10%, rgba(255, 77, 79, 0.05) 0%, transparent 40%),
                        radial-gradient(circle at 10% 90%, rgba(24, 144, 255, 0.05) 0%, transparent 40%);
        }

        .gd6iw-hero-content {
            flex: 1;
            min-width: 320px;
            padding-right: 48px;
        }

        .gd6iw-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
            font-weight: 800;
            line-height: 1.1;
            margin-bottom: 24px;
            color: var(--gd6iw-text-dark);
            word-break: break-word;
        }

        .gd6iw-hero-subtitle {
            font-size: clamp(1.1rem, 1vw + 0.8rem, 1.4rem);
            color: var(--gd6iw-text-light);
            margin-bottom: 48px;
            max-width: 600px;
            word-break: break-word;
        }

        .gd6iw-btn-group {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .gd6iw-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 16px 40px;
            border-radius: 50px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--gd6iw-transition);
            cursor: pointer;
            font-size: 1.1rem;
        }

        .gd6iw-btn-primary {
            background: linear-gradient(135deg, var(--gd6iw-primary) 0%, #ff7875 100%);
            color: white;
            box-shadow: 0 10px 20px rgba(255, 77, 79, 0.2);
        }

        .gd6iw-btn-primary:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(255, 77, 79, 0.3);
        }

        /* 下载展示区 */
        .gd6iw-download-section {
            padding: 96px 0;
            background-color: var(--gd6iw-white);
        }

        .gd6iw-grid-layout {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 48px;
            align-items: stretch;
        }

        .gd6iw-card {
            background: var(--gd6iw-white);
            border-radius: 24px;
            overflow: hidden;
            box-shadow: 0 4px 6px rgba(0,0,0,0.02);
            border: 1px solid rgba(0,0,0,0.05);
            transition: var(--gd6iw-transition);
            display: flex;
            flex-direction: column;
        }

        .gd6iw-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.08);
        }

        .gd6iw-card-image {
            width: 100%;
            height: 280px;
            overflow: hidden;
        }

        .gd6iw-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--gd6iw-transition);
        }

        .gd6iw-card:hover .gd6iw-card-image img {
            transform: scale(1.05);
        }

        .gd6iw-card-body {
            padding: 32px;
            flex-grow: 1;
            word-break: break-word;
        }

        .gd6iw-card-tag {
            display: inline-block;
            padding: 4px 12px;
            background: rgba(24, 144, 255, 0.1);
            color: var(--gd6iw-accent);
            border-radius: 4px;
            font-size: 0.85rem;
            margin-bottom: 16px;
            font-weight: 600;
        }

        .gd6iw-card-title {
            font-size: 1.75rem;
            margin-bottom: 16px;
            font-weight: 700;
        }

        /* 智能生态区 */
        .gd6iw-eco-section {
            padding: 96px 0;
            background-color: #fafafa;
        }

        .gd6iw-section-header {
            text-align: center;
            margin-bottom: 64px;
        }

        .gd6iw-section-title {
            font-size: 2.5rem;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .gd6iw-eco-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
        }

        .gd6iw-eco-item {
            padding: 40px;
            background: white;
            border-radius: 20px;
            transition: var(--gd6iw-transition);
            border: 1px solid transparent;
        }

        .gd6iw-eco-item:hover {
            border-color: var(--gd6iw-primary);
            background: white;
        }

        .gd6iw-eco-name {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--gd6iw-primary);
        }

        .gd6iw-eco-caps {
            list-style: none;
        }

        .gd6iw-eco-caps li {
            margin-bottom: 12px;
            padding-left: 20px;
            position: relative;
            font-size: 0.95rem;
            color: var(--gd6iw-text-light);
        }

        .gd6iw-eco-caps li::before {
            content: '●';
            position: absolute;
            left: 0;
            color: var(--gd6iw-primary);
            font-size: 0.6rem;
            top: 4px;
        }

        /* 安全防护区 - 图文并排 */
        .gd6iw-security-block {
            padding: 96px 0;
            display: flex;
            align-items: center;
            gap: 64px;
            flex-wrap: wrap;
        }

        .gd6iw-security-img {
            flex: 1;
            min-width: 320px;
            border-radius: 32px;
            overflow: hidden;
            box-shadow: 0 30px 60px rgba(0,0,0,0.1);
        }

        .gd6iw-security-img img {
            width: 100%;
            display: block;
        }

        .gd6iw-security-text {
            flex: 1;
            min-width: 320px;
        }

        /* 页脚 */
        .gd6iw-footer {
            background: #141414;
            color: #8c8c8c;
            padding: 80px 0 40px;
        }

        .gd6iw-footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 48px;
            margin-bottom: 64px;
        }

        .gd6iw-footer-brand-name {
            color: white;
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 24px;
        }

        .gd6iw-footer-links h4 {
            color: white;
            margin-bottom: 24px;
            font-size: 1.1rem;
        }

        .gd6iw-footer-links ul {
            list-style: none;
        }

        .gd6iw-footer-links li {
            margin-bottom: 12px;
        }

        .gd6iw-footer-links a {
            color: #8c8c8c;
            text-decoration: none;
            transition: var(--gd6iw-transition);
        }

        .gd6iw-footer-links a:hover {
            color: white;
        }

        .gd6iw-copyright {
            padding-top: 40px;
            border-top: 1px solid #262626;
            text-align: center;
            font-size: 0.9rem;
        }

        /* 响应式适配 */
        @media (max-width: 768px) {
            .gd6iw-nav-wrapper {
                height: auto;
                padding: 16px 0;
            }
            .gd6iw-menu {
                display: none; /* 简化演示，实际可做汉堡菜单 */
            }
            .gd6iw-hero {
                padding-top: 120px;
                text-align: center;
            }
            .gd6iw-hero-content {
                padding-right: 0;
            }
            .gd6iw-btn-group {
                justify-content: center;
            }
            .gd6iw-security-block {
                flex-direction: column-reverse;
                gap: 32px;
            }
        }