:root {
            --k8qm-primary: #0055aa;
            --k8qm-primary-dark: #003366;
            --k8qm-accent: #00d4ff;
            --k8qm-bg: #f8fafc;
            --k8qm-text: #1e293b;
            --k8qm-text-light: #64748b;
            --k8qm-white: #ffffff;
            --k8qm-card-bg: rgba(255, 255, 255, 0.8);
            --k8qm-border: #e2e8f0;
            --k8qm-max-width: 1100px;
        }

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

        body {
            font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--k8qm-bg);
            color: var(--k8qm-text);
            line-height: 1.6;
            word-break: keep-all;
            overflow-x: hidden;
        }

        /* 导航栏设计 */
        .k8qm-navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 72px;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--k8qm-border);
            z-index: 1000;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .k8qm-nav-container {
            width: var(--k8qm-max-width);
            max-width: 95vw;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }

        .k8qm-logo {
            flex-shrink: 0;
        }

        .k8qm-logo img {
            height: 32px;
            width: auto;
            display: block;
        }

        .k8qm-nav-menu {
            display: flex;
            list-style: none;
            gap: 24px;
            flex-wrap: wrap;
        }

        .k8qm-nav-menu a {
            text-decoration: none;
            color: var(--k8qm-text);
            font-weight: 500;
            font-size: 14px;
            transition: color 0.3s ease;
            position: relative;
        }

        .k8qm-nav-menu a:hover, .k8qm-nav-menu a.active {
            color: var(--k8qm-primary);
        }

        .k8qm-nav-menu a.active::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--k8qm-primary);
        }

        /* Hero 区域 - 独特对角线分割设计 */
        .k8qm-hero {
            padding: 160px 0 100px;
            background: linear-gradient(135deg, #001f3f 0%, #0055aa 100%);
            color: var(--k8qm-white);
            position: relative;
            clip-path: polygon(0 0, 100% 0, 100% 85%, 0 100%);
            text-align: center;
        }

        .k8qm-container {
            max-width: var(--k8qm-max-width);
            margin: 0 auto;
            padding: 0 24px;
            word-break: break-word;
            overflow-wrap: break-word;
        }

        .k8qm-hero h1 {
            font-size: clamp(2rem, 5vw, 3.5rem);
            font-weight: 800;
            margin-bottom: 24px;
            letter-spacing: -0.02em;
        }

        .k8qm-hero p {
            font-size: clamp(1rem, 2vw + 0.5rem, 1.25rem);
            max-width: 700px;
            margin: 0 auto 48px;
            opacity: 0.9;
        }

        /* 历史版本下载列表 */
        .k8qm-version-section {
            padding: 80px 0;
            margin-top: -60px;
            position: relative;
            z-index: 10;
        }

        .k8qm-version-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
        }

        .k8qm-version-card {
            background: var(--k8qm-white);
            border: 1px solid var(--k8qm-border);
            border-radius: 16px;
            padding: 32px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .k8qm-version-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.05);
        }

        .k8qm-version-tag {
            display: inline-block;
            padding: 4px 12px;
            background: rgba(0, 85, 170, 0.1);
            color: var(--k8qm-primary);
            border-radius: 20px;
            font-size: 12px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .k8qm-version-title {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .k8qm-version-meta {
            font-size: 14px;
            color: var(--k8qm-text-light);
            margin-bottom: 24px;
            border-bottom: 1px dashed var(--k8qm-border);
            padding-bottom: 16px;
        }

        .k8qm-download-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: auto;
        }

        .k8qm-btn {
            padding: 12px 24px;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 600;
            font-size: 14px;
            transition: all 0.3s ease;
            text-align: center;
            min-width: 0;
            flex: 1;
        }

        .k8qm-btn-primary {
            background: var(--k8qm-primary);
            color: var(--k8qm-white);
        }

        .k8qm-btn-primary:hover {
            background: var(--k8qm-primary-dark);
        }

        .k8qm-btn-outline {
            border: 1px solid var(--k8qm-primary);
            color: var(--k8qm-primary);
        }

        .k8qm-btn-outline:hover {
            background: rgba(0, 85, 170, 0.05);
        }

        /* 性能指标区块 */
        .k8qm-metrics-section {
            padding: 96px 0;
            background: var(--k8qm-white);
        }

        .k8qm-section-title {
            text-align: center;
            margin-bottom: 64px;
        }

        .k8qm-section-title h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .k8qm-metrics-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            justify-content: center;
        }

        .k8qm-metric-card {
            flex: 1;
            min-width: 280px;
            padding: 40px;
            background: var(--k8qm-bg);
            border-radius: 24px;
            text-align: center;
        }

        .k8qm-metric-value {
            font-size: 48px;
            font-weight: 800;
            color: var(--k8qm-primary);
            margin-bottom: 8px;
        }

        .k8qm-metric-name {
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--k8qm-text);
        }

        .k8qm-metric-desc {
            font-size: 14px;
            color: var(--k8qm-text-light);
        }

        /* 行业方案区块 */
        .k8qm-solutions-section {
            padding: 96px 0;
        }

        .k8qm-solution-item {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
            margin-bottom: 64px;
        }

        .k8qm-solution-item:nth-child(even) {
            flex-direction: row-reverse;
        }

        .k8qm-solution-content {
            flex: 1;
            min-width: 300px;
        }

        .k8qm-solution-content h3 {
            font-size: 28px;
            margin-bottom: 16px;
            color: var(--k8qm-primary);
        }

        .k8qm-solution-content p {
            margin-bottom: 24px;
            font-size: 16px;
        }

        .k8qm-solution-tag {
            display: inline-block;
            padding: 6px 16px;
            background: var(--k8qm-text);
            color: var(--k8qm-white);
            border-radius: 4px;
            font-size: 12px;
            text-transform: uppercase;
            margin-bottom: 16px;
        }

        /* 未来路线图 */
        .k8qm-roadmap-section {
            padding: 96px 0;
            background: var(--k8qm-primary-dark);
            color: var(--k8qm-white);
        }

        .k8qm-roadmap-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
        }

        .k8qm-roadmap-card {
            flex: 1;
            min-width: 240px;
            background: rgba(255, 255, 255, 0.1);
            padding: 32px;
            border-radius: 16px;
            border-left: 4px solid var(--k8qm-accent);
        }

        .k8qm-roadmap-quarter {
            font-weight: 800;
            font-size: 20px;
            margin-bottom: 12px;
            color: var(--k8qm-accent);
        }

        /* 证言区块 */
        .k8qm-testimony-section {
            padding: 96px 0;
        }

        .k8qm-testimony-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 32px;
        }

        .k8qm-testimony-card {
            background: var(--k8qm-white);
            padding: 32px;
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
            border: 1px solid var(--k8qm-border);
        }

        .k8qm-testimony-content {
            font-style: italic;
            margin-bottom: 24px;
            font-size: 17px;
        }

        .k8qm-testimony-author {
            font-weight: 700;
            color: var(--k8qm-primary);
        }

        /* 页脚 */
        .k8qm-footer {
            padding: 80px 0 40px;
            background: #111;
            color: #ccc;
            font-size: 14px;
        }

        .k8qm-footer-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
            margin-bottom: 64px;
        }

        .k8qm-footer-brand {
            flex: 2;
            min-width: 280px;
        }

        .k8qm-footer-brand h2 {
            color: var(--k8qm-white);
            margin-bottom: 24px;
            font-size: 24px;
        }

        .k8qm-footer-links {
            flex: 1;
            min-width: 150px;
        }

        .k8qm-footer-links h4 {
            color: var(--k8qm-white);
            margin-bottom: 24px;
        }

        .k8qm-footer-links ul {
            list-style: none;
        }

        .k8qm-footer-links li {
            margin-bottom: 12px;
        }

        .k8qm-footer-links a {
            color: #999;
            text-decoration: none;
            transition: color 0.3s;
        }

        .k8qm-footer-links a:hover {
            color: var(--k8qm-white);
        }

        .k8qm-footer-bottom {
            padding-top: 40px;
            border-top: 1px solid #222;
            text-align: center;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .k8qm-nav-menu {
                display: none; /* 简化移动端，实际开发中应使用汉堡菜单 */
            }
            .k8qm-hero {
                clip-path: none;
                padding: 120px 0 60px;
            }
            .k8qm-version-section {
                margin-top: 0;
            }
        }