:root {
            --kuarrz-primary: #ff4d4f;
            --kuarrz-secondary: #1890ff;
            --kuarrz-accent: #722ed1;
            --kuarrz-bg: #f8fafc;
            --kuarrz-text: #1e293b;
            --kuarrz-text-light: #64748b;
            --kuarrz-white: #ffffff;
            --kuarrz-gradient: linear-gradient(135deg, #ff4d4f 0%, #ff7875 100%);
            --kuarrz-glass: rgba(255, 255, 255, 0.8);
            --kuarrz-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            --kuarrz-radius: 20px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--kuarrz-bg);
            color: var(--kuarrz-text);
            line-height: 1.8;
            overflow-x: hidden;
            word-break: break-word;
        }

        /* 导航栏样式 */
        .kuarrz-navbar {
            position: fixed;
            top: 20px;
            left: 50%;
            transform: translateX(-50%);
            width: 95%;
            max-width: 1400px;
            height: 70px;
            background: var(--kuarrz-glass);
            backdrop-filter: blur(15px);
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: 35px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 32px;
            z-index: 1000;
            box-shadow: var(--kuarrz-shadow);
        }

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

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

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

        .kuarrz-nav-item a {
            text-decoration: none;
            color: var(--kuarrz-text);
            font-weight: 500;
            font-size: 15px;
            padding: 8px 16px;
            border-radius: 20px;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .kuarrz-nav-item a:hover {
            background: rgba(0, 0, 0, 0.05);
            color: var(--kuarrz-primary);
        }

        .kuarrz-nav-item.active a {
            background: var(--kuarrz-primary);
            color: var(--kuarrz-white);
        }

        /* 核心Hero区域 - 独特非对称布局 */
        .kuarrz-hero {
            padding-top: 160px;
            padding-bottom: 96px;
            display: flex;
            flex-wrap: wrap;
            max-width: 1400px;
            margin: 0 auto;
            padding-left: 5%;
            padding-right: 5%;
            align-items: center;
            gap: 48px;
        }

        .kuarrz-hero-content {
            flex: 1;
            min-width: 320px;
        }

        .kuarrz-hero-tag {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(255, 77, 79, 0.1);
            color: var(--kuarrz-primary);
            border-radius: 50px;
            font-weight: 600;
            font-size: 14px;
            margin-bottom: 24px;
        }

        .kuarrz-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
            line-height: 1.1;
            font-weight: 800;
            margin-bottom: 32px;
            background: linear-gradient(to right, #1e293b, #ff4d4f);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            word-break: keep-all;
        }

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

        .kuarrz-hero-visual {
            flex: 1.2;
            min-width: 320px;
            position: relative;
        }

        .kuarrz-skin-showcase {
            width: 100%;
            height: 500px;
            background: var(--kuarrz-white);
            border-radius: var(--kuarrz-radius);
            box-shadow: 0 40px 80px rgba(0,0,0,0.1);
            position: relative;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform 0.5s ease;
        }

        .kuarrz-skin-showcase:hover {
            transform: scale(1.02);
        }

        /* 虚拟键盘展示 */
        .kuarrz-keyboard-mockup {
            width: 80%;
            height: 60%;
            border: 2px solid #eee;
            border-radius: 12px;
            display: grid;
            grid-template-columns: repeat(10, 1fr);
            gap: 8px;
            padding: 12px;
            background: linear-gradient(45deg, #f3f4f6, #fff);
        }

        .kuarrz-key {
            background: #fff;
            border-radius: 6px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.05);
            aspect-ratio: 1;
        }

        /* 动态皮肤列表区 */
        .kuarrz-section {
            padding: 96px 5%;
            max-width: 1400px;
            margin: 0 auto;
        }

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

        .kuarrz-section-title {
            font-size: clamp(2rem, 3vw, 3rem);
            margin-bottom: 16px;
        }

        .kuarrz-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 32px;
            min-width: 0;
        }

        .kuarrz-card {
            background: var(--kuarrz-white);
            border-radius: var(--kuarrz-radius);
            padding: 0;
            overflow: hidden;
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            border: 1px solid rgba(0,0,0,0.05);
            display: flex;
            flex-direction: column;
        }

        .kuarrz-card:hover {
            transform: translateY(-12px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.08);
        }

        .kuarrz-card-thumb {
            width: 100%;
            height: 200px;
            background: #eee;
            position: relative;
            background: linear-gradient(135deg, #e2e8f0 0%, #cbd5e1 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 40px;
        }

        .kuarrz-card-content {
            padding: 24px;
        }

        .kuarrz-card-title {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .kuarrz-card-desc {
            color: var(--kuarrz-text-light);
            font-size: 0.9rem;
            margin-bottom: 20px;
        }

        /* 独特的功能展示区块 */
        .kuarrz-feature-row {
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
            margin-top: 48px;
            align-items: center;
        }

        .kuarrz-feature-item {
            flex: 1;
            min-width: 280px;
            background: var(--kuarrz-white);
            padding: 40px;
            border-radius: var(--kuarrz-radius);
            position: relative;
            z-index: 1;
        }

        .kuarrz-feature-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 5px;
            height: 100%;
            background: var(--kuarrz-primary);
            border-radius: 5px 0 0 5px;
        }

        /* CTA 区域 */
        .kuarrz-cta {
            background: var(--kuarrz-text);
            color: var(--kuarrz-white);
            border-radius: 40px;
            padding: 80px 40px;
            text-align: center;
            margin-bottom: 96px;
        }

        .kuarrz-btn {
            display: inline-block;
            padding: 16px 48px;
            background: var(--kuarrz-primary);
            color: var(--kuarrz-white);
            text-decoration: none;
            border-radius: 50px;
            font-weight: 600;
            font-size: 18px;
            transition: all 0.3s ease;
            box-shadow: 0 10px 20px rgba(255, 77, 79, 0.3);
        }

        .kuarrz-btn:hover {
            transform: scale(1.05);
            box-shadow: 0 15px 30px rgba(255, 77, 79, 0.5);
        }

        /* 页脚 */
        .kuarrz-footer {
            background: var(--kuarrz-white);
            padding: 80px 5% 40px;
            border-top: 1px solid #eee;
        }

        .kuarrz-footer-grid {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 48px;
            margin-bottom: 64px;
        }

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

        .kuarrz-footer-title {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--kuarrz-primary);
            margin-bottom: 24px;
        }

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

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

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

        .kuarrz-footer-links a {
            text-decoration: none;
            color: var(--kuarrz-text-light);
            transition: color 0.3s;
        }

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

        .kuarrz-copyright {
            text-align: center;
            padding-top: 40px;
            border-top: 1px solid #f1f5f9;
            color: var(--kuarrz-text-light);
            font-size: 0.9rem;
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .kuarrz-nav-menu {
                display: none; /* 简化演示，实际可做汉堡菜单 */
            }
            .kuarrz-hero-title {
                font-size: 3rem;
            }
        }

        @media (max-width: 768px) {
            .kuarrz-hero {
                padding-top: 120px;
                flex-direction: column;
                text-align: center;
            }
            .kuarrz-hero-subtitle {
                margin-left: auto;
                margin-right: auto;
            }
            .kuarrz-footer-brand {
                grid-column: span 1;
            }
            .kuarrz-navbar {
                padding: 0 16px;
            }
        }