:root {
            --h187-primary: #2c5282;
            --h187-accent: #48bb78;
            --h187-dark: #1a202c;
            --h187-light: #f7fafc;
            --h187-text: #2d3748;
            --h187-border: #e2e8f0;
            --h187-code-bg: #2d3436;
        }

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

        body {
            font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            line-height: 1.7;
            color: var(--h187-text);
            background-color: #ffffff;
            word-break: keep-all;
        }

        /* 布局容器 */
        .h187-container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* 导航栏 */
        .h187-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--h187-border);
            z-index: 1000;
            padding: 16px 0;
        }

        .h187-nav-wrapper {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
        }

        .h187-logo {
            min-width: 0;
            flex-shrink: 0;
        }

        .h187-logo img {
            height: 40px;
            display: block;
        }

        .h187-nav {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 16px;
        }

        .h187-nav li {
            min-width: 0;
        }

        .h187-nav a {
            text-decoration: none;
            color: var(--h187-text);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 8px 4px;
            transition: color 0.3s;
            position: relative;
        }

        .h187-nav a:hover, .h187-nav a.active {
            color: var(--h187-primary);
        }

        .h187-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--h187-primary);
        }

        /* Hero 区块 */
        .h187-hero {
            padding: 160px 0 80px;
            background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
            text-align: center;
        }

        .h187-hero-content {
            max-width: 800px;
            margin: 0 auto;
        }

        .h187-hero h1 {
            font-size: clamp(2rem, 4vw + 1rem, 3.5rem);
            line-height: 1.2;
            color: var(--h187-dark);
            margin-bottom: 24px;
            word-break: break-word;
        }

        .h187-hero p {
            font-size: clamp(1rem, 1.5vw + 0.5rem, 1.25rem);
            color: #4a5568;
            margin-bottom: 40px;
        }

        /* 终端仿真样式 */
        .h187-terminal {
            background: var(--h187-code-bg);
            border-radius: 12px;
            padding: 24px;
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
            text-align: left;
            margin-top: 48px;
            border: 1px solid #4a5568;
        }

        .h187-terminal-header {
            display: flex;
            gap: 8px;
            margin-bottom: 16px;
        }

        .h187-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
        }

        .h187-dot-red { background: #ff5f56; }
        .h187-dot-yellow { background: #ffbd2e; }
        .h187-dot-green { background: #27c93f; }

        .h187-code {
            font-family: "Cascadia Code", "Consolas", monospace;
            color: #f8f8f2;
            font-size: 0.9rem;
            overflow-x: auto;
            white-space: pre-wrap;
            word-break: break-all;
        }

        /* 内容章节 */
        .h187-section {
            padding: 96px 0;
            border-bottom: 1px solid var(--h187-border);
        }

        .h187-section-title {
            text-align: center;
            margin-bottom: 64px;
        }

        .h187-section-title h2 {
            font-size: clamp(1.5rem, 3vw + 0.5rem, 2.25rem);
            color: var(--h187-dark);
            margin-bottom: 16px;
        }

        /* 算法优势卡片 */
        .h187-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
        }

        .h187-card {
            background: #fff;
            padding: 32px;
            border-radius: 16px;
            border: 1px solid var(--h187-border);
            transition: transform 0.3s, box-shadow 0.3s;
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .h187-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
        }

        .h187-card-tag {
            display: inline-block;
            background: var(--h187-accent);
            color: white;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            margin-bottom: 16px;
            align-self: flex-start;
        }

        .h187-card h3 {
            margin-bottom: 16px;
            color: var(--h187-primary);
        }

        .h187-card ul {
            list-style: none;
            margin-top: 16px;
        }

        .h187-card li {
            font-size: 0.9rem;
            margin-bottom: 8px;
            padding-left: 20px;
            position: relative;
        }

        .h187-card li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--h187-accent);
        }

        /* 工作流同步展示 */
        .h187-workflow-item {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            margin-bottom: 64px;
            gap: 48px;
        }

        .h187-workflow-item:nth-child(even) {
            flex-direction: row-reverse;
        }

        .h187-workflow-text {
            flex: 1;
            min-width: 300px;
        }

        .h187-workflow-image-placeholder {
            flex: 1;
            min-width: 300px;
            background: #edf2f7;
            height: 300px;
            border-radius: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 2px dashed #cbd5e0;
        }

        /* 页脚 */
        .h187-footer {
            background: var(--h187-dark);
            color: #fff;
            padding: 64px 0 32px;
        }

        .h187-footer-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
            margin-bottom: 48px;
        }

        .h187-footer-brand {
            flex: 1;
            min-width: 250px;
        }

        .h187-footer-brand h2 {
            font-size: 1.5rem;
            margin-bottom: 16px;
        }

        .h187-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
        }

        .h187-footer-col {
            min-width: 120px;
        }

        .h187-footer-col h4 {
            margin-bottom: 24px;
            color: var(--h187-accent);
        }

        .h187-footer-col ul {
            list-style: none;
        }

        .h187-footer-col li {
            margin-bottom: 12px;
        }

        .h187-footer-col a {
            color: #cbd5e0;
            text-decoration: none;
            font-size: 0.9rem;
        }

        .h187-footer-bottom {
            border-top: 1px solid #4a5568;
            padding-top: 32px;
            text-align: center;
            font-size: 0.85rem;
            color: #a0aec0;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .h187-nav {
                display: none; /* 简化移动端处理，实际项目中应使用汉堡菜单 */
            }
            .h187-hero {
                padding: 120px 0 60px;
            }
            .h187-grid {
                grid-template-columns: 1fr;
            }
            .h187-workflow-item {
                flex-direction: column !important;
            }
        }