:root {
            --kmnh1y-primary: #FF4D30;
            --kmnh1y-primary-dark: #D43D21;
            --kmnh1y-accent: #FF8200;
            --kmnh1y-text-main: #1D1D1F;
            --kmnh1y-text-muted: #6E6E73;
            --kmnh1y-bg-light: #F5F5F7;
            --kmnh1y-bg-white: #FFFFFF;
            --kmnh1y-glass: rgba(255, 255, 255, 0.8);
            --kmnh1y-shadow: 0 10px 30px rgba(0,0,0,0.08);
            --kmnh1y-radius: 16px;
            --kmnh1y-container-width: 1300px;
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", -apple-system, sans-serif;
            color: var(--kmnh1y-text-main);
            background-color: var(--kmnh1y-bg-white);
            line-height: 1.6;
            overflow-x: hidden;
            word-break: break-word;
        }

        /* 导航栏 */
        .kmnh1y-navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: var(--kmnh1y-glass);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            transition: all 0.3s ease;
        }

        .kmnh1y-nav-container {
            max-width: var(--kmnh1y-container-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }

        .kmnh1y-logo {
            display: flex;
            align-items: center;
            min-width: 0;
        }

        .kmnh1y-logo img {
            height: 32px;
            width: auto;
        }

        .kmnh1y-nav-menu {
            display: flex;
            gap: 24px;
            list-style: none;
            flex-wrap: wrap;
            min-width: 0;
        }

        .kmnh1y-nav-link {
            text-decoration: none;
            color: var(--kmnh1y-text-main);
            font-weight: 500;
            font-size: 15px;
            transition: color 0.3s;
            white-space: nowrap;
        }

        .kmnh1y-nav-link:hover {
            color: var(--kmnh1y-primary);
        }

        /* Hero 区块 - 独特非对称布局 */
        .kmnh1y-hero {
            padding: 160px 24px 96px;
            background: linear-gradient(135deg, #FFF5F2 0%, #FFFFFF 100%);
            position: relative;
            overflow: hidden;
        }

        .kmnh1y-hero-inner {
            max-width: var(--kmnh1y-container-width);
            margin: 0 auto;
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 48px;
        }

        .kmnh1y-hero-content {
            flex: 1;
            min-width: 320px;
        }

        .kmnh1y-hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(255, 77, 48, 0.1);
            color: var(--kmnh1y-primary);
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .kmnh1y-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4rem);
            line-height: 1.1;
            font-weight: 800;
            margin-bottom: 24px;
            color: var(--kmnh1y-text-main);
            word-break: keep-all;
        }

        .kmnh1y-hero-subtitle {
            font-size: clamp(1.1rem, 1.5vw + 0.5rem, 1.4rem);
            color: var(--kmnh1y-text-muted);
            margin-bottom: 40px;
            max-width: 600px;
        }

        .kmnh1y-hero-visual {
            flex: 1;
            min-width: 320px;
            display: flex;
            justify-content: center;
            position: relative;
        }

        .kmnh1y-input-card {
            background: var(--kmnh1y-bg-white);
            padding: 32px;
            border-radius: 24px;
            box-shadow: 0 20px 60px rgba(0,0,0,0.1);
            width: 100%;
            max-width: 500px;
            border: 1px solid rgba(255, 77, 48, 0.1);
        }

        .kmnh1y-typing-demo {
            font-size: 20px;
            font-weight: 600;
            border-right: 3px solid var(--kmnh1y-primary);
            padding-right: 5px;
            animation: kmnh1y-blink 0.8s infinite;
        }

        @keyframes kmnh1y-blink {
            50% { border-color: transparent; }
        }

        /* 核心问题解答区块 */
        .kmnh1y-analysis {
            padding: 96px 24px;
            background-color: var(--kmnh1y-bg-light);
        }

        .kmnh1y-section-header {
            max-width: 800px;
            margin: 0 auto 64px;
            text-align: center;
        }

        .kmnh1y-section-title {
            font-size: clamp(2rem, 3vw + 0.5rem, 2.5rem);
            margin-bottom: 16px;
        }

        .kmnh1y-grid-bento {
            max-width: var(--kmnh1y-container-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 24px;
        }

        .kmnh1y-bento-item {
            background: var(--kmnh1y-bg-white);
            padding: 40px;
            border-radius: var(--kmnh1y-radius);
            transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.3s;
            min-width: 0;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .kmnh1y-bento-item:hover {
            transform: translateY(-8px);
            box-shadow: var(--kmnh1y-shadow);
        }

        .kmnh1y-bento-icon {
            font-size: 40px;
            margin-bottom: 24px;
        }

        .kmnh1y-bento-h3 {
            font-size: 24px;
            margin-bottom: 16px;
            color: var(--kmnh1y-primary);
        }

        /* 版本下载中心 - 独特卡片设计 */
        .kmnh1y-download-hub {
            padding: 96px 24px;
        }

        .kmnh1y-platform-wrapper {
            max-width: var(--kmnh1y-container-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
        }

        .kmnh1y-platform-card {
            flex: 1;
            min-width: 300px;
            background: var(--kmnh1y-bg-white);
            border: 1px solid #EDEDEF;
            border-radius: 24px;
            padding: 40px;
            display: flex;
            flex-direction: column;
            transition: all 0.3s;
        }

        .kmnh1y-platform-card:hover {
            border-color: var(--kmnh1y-primary);
            background: #FFF9F8;
        }

        .kmnh1y-platform-name {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .kmnh1y-target-user {
            font-size: 14px;
            color: var(--kmnh1y-text-muted);
            margin-bottom: 24px;
            padding-bottom: 24px;
            border-bottom: 1px dashed #DDD;
        }

        .kmnh1y-version-tag {
            font-weight: 600;
            color: var(--kmnh1y-primary);
            margin-bottom: 16px;
            display: block;
        }

        .kmnh1y-feature-list {
            list-style: none;
            margin-bottom: 32px;
            flex-grow: 1;
        }

        .kmnh1y-feature-list li {
            padding: 8px 0;
            font-size: 15px;
            display: flex;
            align-items: flex-start;
        }

        .kmnh1y-feature-list li::before {
            content: "✓";
            color: var(--kmnh1y-primary);
            margin-right: 12px;
            font-weight: bold;
        }

        .kmnh1y-download-btn {
            display: inline-block;
            text-align: center;
            background: var(--kmnh1y-primary);
            color: white;
            padding: 16px 32px;
            border-radius: 12px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s;
        }

        .kmnh1y-download-btn:hover {
            background: var(--kmnh1y-primary-dark);
            transform: scale(1.02);
        }

        .kmnh1y-metrics {
            margin-top: 16px;
            font-size: 12px;
            color: var(--kmnh1y-text-muted);
            text-align: center;
        }

        /* FAQ 问答区块 */
        .kmnh1y-faq {
            padding: 96px 24px;
            background: #1D1D1F;
            color: white;
        }

        .kmnh1y-faq-container {
            max-width: 900px;
            margin: 0 auto;
        }

        .kmnh1y-faq-item {
            margin-bottom: 32px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            padding-bottom: 24px;
        }

        .kmnh1y-faq-q {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--kmnh1y-accent);
            display: flex;
            gap: 12px;
        }

        .kmnh1y-faq-a {
            font-size: 16px;
            color: #A1A1A6;
            line-height: 1.8;
            padding-left: 32px;
        }

        /* 动态区块 */
        .kmnh1y-news {
            padding: 96px 24px;
        }

        /* 页脚 */
        .kmnh1y-footer {
            padding: 80px 24px 40px;
            background: var(--kmnh1y-bg-light);
            border-top: 1px solid rgba(0,0,0,0.05);
        }

        .kmnh1y-footer-grid {
            max-width: var(--kmnh1y-container-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            justify-content: space-between;
        }

        .kmnh1y-footer-col {
            flex: 1;
            min-width: 200px;
        }

        .kmnh1y-footer-brand {
            font-size: 24px;
            font-weight: 800;
            color: var(--kmnh1y-primary);
            margin-bottom: 20px;
        }

        .kmnh1y-footer-links {
            list-style: none;
        }

        .kmnh1y-footer-links li {
            margin-bottom: 12px;
        }

        .kmnh1y-footer-links a {
            text-decoration: none;
            color: var(--kmnh1y-text-muted);
            transition: color 0.3s;
        }

        .kmnh1y-footer-links a:hover {
            color: var(--kmnh1y-primary);
        }

        .kmnh1y-copyright {
            max-width: var(--kmnh1y-container-width);
            margin: 40px auto 0;
            padding-top: 24px;
            border-top: 1px solid rgba(0,0,0,0.05);
            text-align: center;
            font-size: 13px;
            color: var(--kmnh1y-text-muted);
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .kmnh1y-nav-menu {
                display: none; /* 简化移动端，实际项目中需汉堡菜单 */
            }
            .kmnh1y-hero {
                padding-top: 120px;
                text-align: center;
            }
            .kmnh1y-hero-inner {
                flex-direction: column;
            }
            .kmnh1y-hero-subtitle {
                margin-left: auto;
                margin-right: auto;
            }
            .kmnh1y-grid-bento, .kmnh1y-platform-wrapper {
                grid-template-columns: 1fr;
            }
            .kmnh1y-bento-item, .kmnh1y-platform-card {
                min-width: 100%;
            }
        }