:root {
            --kmnh1y-primary: #FF6600;
            --kmnh1y-primary-light: #FF8533;
            --kmnh1y-secondary: #1E88E5;
            --kmnh1y-dark: #212121;
            --kmnh1y-light: #F5F5F7;
            --kmnh1y-white: #FFFFFF;
            --kmnh1y-gray: #757575;
            --kmnh1y-bg-gradient: linear-gradient(135deg, #FFF5F0 0%, #E6F3FF 100%);
            --kmnh1y-transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
            background-color: var(--kmnh1y-light);
            color: var(--kmnh1y-dark);
            line-height: 1.6;
            overflow-x: hidden;
            word-break: break-word;
        }

        /* 布局容器 */
        .kmnh1y-container {
            max-width: 1300px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* 导航栏 */
        .kmnh1y-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            height: 72px;
            display: flex;
            align-items: center;
        }

        .kmnh1y-nav-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
            flex-wrap: wrap;
        }

        .kmnh1y-logo {
            flex-shrink: 0;
            min-width: 0;
        }

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

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

        .kmnh1y-nav-links a {
            text-decoration: none;
            color: var(--kmnh1y-dark);
            font-size: 15px;
            font-weight: 500;
            transition: var(--kmnh1y-transition);
            white-space: nowrap;
        }

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

        /* Hero 区块 */
        .kmnh1y-hero {
            padding-top: 160px;
            padding-bottom: 96px;
            background: var(--kmnh1y-bg-gradient);
            text-align: center;
            position: relative;
        }

        .kmnh1y-hero-content {
            max-width: 900px;
            margin: 0 auto;
        }

        .kmnh1y-hero-badge {
            display: inline-block;
            background: rgba(255, 102, 0, 0.1);
            color: var(--kmnh1y-primary);
            padding: 8px 16px;
            border-radius: 32px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .kmnh1y-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
            line-height: 1.1;
            font-weight: 800;
            color: var(--kmnh1y-dark);
            margin-bottom: 24px;
            letter-spacing: -1px;
        }

        .kmnh1y-hero-subtitle {
            font-size: clamp(1.1rem, 1.5vw + 0.5rem, 1.4rem);
            color: var(--kmnh1y-gray);
            margin-bottom: 48px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        .kmnh1y-hero-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            min-width: 0;
        }

        /* 按钮 */
        .kmnh1y-btn {
            display: inline-flex;
            align-items: center;
            padding: 16px 36px;
            border-radius: 12px;
            font-size: 16px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--kmnh1y-transition);
            cursor: pointer;
            border: none;
        }

        .kmnh1y-btn-primary {
            background: var(--kmnh1y-primary);
            color: var(--kmnh1y-white);
            box-shadow: 0 8px 24px rgba(255, 102, 0, 0.25);
        }

        .kmnh1y-btn-primary:hover {
            background: var(--kmnh1y-primary-light);
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(255, 102, 0, 0.35);
        }

        .kmnh1y-btn-outline {
            background: var(--kmnh1y-white);
            color: var(--kmnh1y-dark);
            border: 1px solid rgba(0, 0, 0, 0.1);
        }

        .kmnh1y-btn-outline:hover {
            border-color: var(--kmnh1y-primary);
            color: var(--kmnh1y-primary);
            background: rgba(255, 102, 0, 0.02);
        }

        /* 核心版本中心 */
        .kmnh1y-section-title {
            text-align: center;
            margin-bottom: 64px;
        }

        .kmnh1y-section-title h2 {
            font-size: clamp(2rem, 3vw + 0.5rem, 2.5rem);
            font-weight: 700;
            margin-bottom: 16px;
        }

        .kmnh1y-version-hub {
            padding: 96px 0;
            background: var(--kmnh1y-white);
        }

        .kmnh1y-version-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
            gap: 32px;
        }

        .kmnh1y-version-card {
            background: var(--kmnh1y-light);
            border-radius: 24px;
            padding: 40px;
            transition: var(--kmnh1y-transition);
            display: flex;
            flex-direction: column;
            border: 1px solid rgba(0, 0, 0, 0.03);
        }

        .kmnh1y-version-card:hover {
            transform: translateY(-8px);
            background: var(--kmnh1y-white);
            box-shadow: 0 32px 64px rgba(0, 0, 0, 0.08);
        }

        .kmnh1y-platform-tag {
            font-size: 14px;
            font-weight: 700;
            color: var(--kmnh1y-secondary);
            margin-bottom: 16px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .kmnh1y-version-name {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .kmnh1y-version-tagline {
            color: var(--kmnh1y-gray);
            margin-bottom: 24px;
            font-size: 15px;
        }

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

        .kmnh1y-highlights li {
            margin-bottom: 12px;
            padding-left: 28px;
            position: relative;
            font-size: 15px;
            color: #444;
        }

        .kmnh1y-highlights li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--kmnh1y-primary);
            font-weight: bold;
        }

        .kmnh1y-download-meta {
            margin-top: 24px;
            padding-top: 24px;
            border-top: 1px dashed rgba(0, 0, 0, 0.1);
            font-size: 13px;
            color: var(--kmnh1y-gray);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 8px;
        }

        /* 常见问题区块 */
        .kmnh1y-faq {
            padding: 96px 0;
            background: #FAFAFA;
        }

        .kmnh1y-faq-container {
            max-width: 800px;
            margin: 0 auto;
        }

        .kmnh1y-faq-item {
            background: var(--kmnh1y-white);
            border-radius: 16px;
            margin-bottom: 16px;
            overflow: hidden;
            box-shadow: 0 4px 12px rgba(0,0,0,0.02);
        }

        .kmnh1y-faq-question {
            padding: 24px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--kmnh1y-transition);
        }

        .kmnh1y-faq-question:hover {
            color: var(--kmnh1y-primary);
        }

        .kmnh1y-faq-answer {
            padding: 0 24px 24px 24px;
            color: var(--kmnh1y-gray);
            font-size: 15px;
            line-height: 1.8;
        }

        /* 动态资讯区块标记 */
        .kmnh1y-dynamic-news {
            padding: 96px 0;
            background: var(--kmnh1y-white);
        }

        /* 页脚 */
        .kmnh1y-footer {
            background: var(--kmnh1y-dark);
            color: rgba(255, 255, 255, 0.6);
            padding: 80px 0 40px;
        }

        .kmnh1y-footer-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            margin-bottom: 64px;
        }

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

        .kmnh1y-footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: var(--kmnh1y-white);
            margin-bottom: 24px;
        }

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

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

        .kmnh1y-footer-links a {
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
            transition: var(--kmnh1y-transition);
            font-size: 14px;
        }

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

        .kmnh1y-copyright {
            text-align: center;
            padding-top: 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 13px;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .kmnh1y-nav-links {
                display: none; /* 简化移动端，实际项目中应有汉堡菜单 */
            }

            .kmnh1y-version-grid {
                grid-template-columns: 1fr;
            }

            .kmnh1y-hero {
                padding-top: 120px;
                padding-bottom: 64px;
            }

            .kmnh1y-download-meta {
                grid-template-columns: 1fr;
            }
        }