:root {
            --h187-primary: #0066cc;
            --h187-secondary: #ff9900;
            --h187-accent: #eef4ff;
            --h187-text: #2c3e50;
            --h187-text-light: #5d6d7e;
            --h187-bg: #fdfdfd;
            --h187-white: #ffffff;
            --h187-border: #e1e8ed;
            --h187-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            --h187-container-width: 1400px;
            --h187-radius: 16px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--h187-text);
            background-color: var(--h187-bg);
            line-height: 1.8;
            overflow-x: hidden;
            word-break: keep-all;
        }

        /* 布局与容器 */
        .h187-container {
            max-width: var(--h187-container-width);
            margin: 0 auto;
            padding: 0 48px;
            width: 100%;
        }

        @media (max-width: 768px) {
            .h187-container {
                padding: 0 24px;
            }
        }

        /* 导航栏 */
        .h187-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            z-index: 1000;
            border-bottom: 1px solid var(--h187-border);
            transition: all 0.3s ease;
        }

        .h187-nav-wrapper {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            height: 80px;
        }

        .h187-logo {
            min-width: 0;
            display: flex;
            align-items: center;
        }

        .h187-logo img {
            height: 40px;
            width: auto;
        }

        .h187-nav-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 24px;
            min-width: 0;
        }

        .h187-nav-menu li a {
            text-decoration: none;
            color: var(--h187-text);
            font-weight: 500;
            font-size: 15px;
            transition: color 0.3s;
            padding: 8px 0;
            position: relative;
        }

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

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

        /* Hero 区块 - 独特非对称布局 */
        .h187-hero {
            padding-top: 160px;
            padding-bottom: 96px;
            background: linear-gradient(135deg, #f0f7ff 0%, #ffffff 100%);
            position: relative;
            overflow: hidden;
        }

        .h187-hero::before {
            content: 'FILTER';
            position: absolute;
            top: 10%;
            right: -5%;
            font-size: 20rem;
            font-weight: 900;
            color: rgba(0, 102, 204, 0.03);
            z-index: 0;
        }

        .h187-hero-flex {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
            position: relative;
            z-index: 1;
        }

        .h187-hero-content {
            flex: 1;
            min-width: 320px;
        }

        .h187-hero-tag {
            display: inline-block;
            background: var(--h187-primary);
            color: white;
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 14px;
            margin-bottom: 24px;
            letter-spacing: 1px;
        }

        .h187-hero h1 {
            font-size: clamp(2.5rem, 5vw, 4rem);
            line-height: 1.1;
            margin-bottom: 24px;
            color: var(--h187-text);
            font-weight: 800;
        }

        .h187-hero p {
            font-size: clamp(1.1rem, 2vw, 1.25rem);
            color: var(--h187-text-light);
            max-width: 600px;
            margin-bottom: 40px;
        }

        /* 规则可视化面板 */
        .h187-rules-visual {
            flex: 1;
            min-width: 320px;
            background: var(--h187-white);
            padding: 32px;
            border-radius: var(--h187-radius);
            box-shadow: 0 20px 50px rgba(0,0,0,0.1);
            border: 1px solid var(--h187-border);
        }

        .h187-code-window {
            background: #1e1e1e;
            color: #d4d4d4;
            padding: 24px;
            border-radius: 8px;
            font-family: "Consolas", "Monaco", monospace;
            font-size: 14px;
            line-height: 1.6;
            overflow-x: auto;
        }

        .h187-code-keyword { color: #569cd6; }
        .h187-code-string { color: #ce9178; }
        .h187-code-comment { color: #6a9955; }

        /* 内容板块 */
        .h187-section {
            padding: 96px 0;
        }

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

        .h187-section-title h2 {
            font-size: clamp(2rem, 3vw, 2.5rem);
            margin-bottom: 16px;
        }

        .h187-section-title .h187-underline {
            width: 80px;
            height: 4px;
            background: var(--h187-secondary);
            margin: 0 auto;
        }

        /* 核心模式网格 */
        .h187-modes-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 32px;
        }

        .h187-mode-card {
            background: var(--h187-white);
            padding: 48px;
            border-radius: var(--h187-radius);
            transition: all 0.3s ease;
            border: 1px solid var(--h187-border);
            display: flex;
            flex-direction: column;
        }

        .h187-mode-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--h187-shadow);
            border-color: var(--h187-primary);
        }

        .h187-mode-icon {
            font-size: 40px;
            margin-bottom: 24px;
            color: var(--h187-primary);
        }

        .h187-mode-card h3 {
            font-size: 22px;
            margin-bottom: 16px;
            color: var(--h187-text);
        }

        .h187-mode-list {
            list-style: none;
            margin-bottom: 24px;
            flex-grow: 1;
        }

        .h187-mode-list li {
            position: relative;
            padding-left: 24px;
            margin-bottom: 12px;
            font-size: 15px;
            color: var(--h187-text-light);
            word-break: break-word;
        }

        .h187-mode-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--h187-secondary);
            font-weight: bold;
        }

        .h187-algorithmic-edge {
            background: var(--h187-accent);
            padding: 16px;
            border-radius: 8px;
            font-size: 14px;
            font-style: italic;
            color: var(--h187-primary);
        }

        /* 规则工作流 - 错位布局 */
        .h187-workflow-section {
            background-color: #f8f9fa;
        }

        .h187-workflow-row {
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
            align-items: center;
            margin-bottom: 80px;
        }

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

        .h187-workflow-text {
            flex: 1;
            min-width: 320px;
        }

        .h187-workflow-text h3 {
            font-size: 28px;
            margin-bottom: 24px;
            color: var(--h187-primary);
        }

        .h187-workflow-img {
            flex: 1;
            min-width: 320px;
            background: var(--h187-white);
            padding: 24px;
            border-radius: var(--h187-radius);
            box-shadow: var(--h187-shadow);
        }

        .h187-step-box {
            border-left: 4px solid var(--h187-secondary);
            padding-left: 24px;
            margin: 24px 0;
        }

        /* 动态内容区 */
        .h187-dynamic-area {
            background: var(--h187-text);
            color: var(--h187-white);
            border-radius: var(--h187-radius);
            padding: 64px;
            margin: 48px 0;
        }

        .h187-dynamic-area h2 {
            margin-bottom: 32px;
            color: var(--h187-secondary);
        }

        .h187-article-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
        }

        .h187-article-item {
            flex: 1;
            min-width: 280px;
            background: rgba(255,255,255,0.05);
            padding: 24px;
            border-radius: 12px;
            transition: background 0.3s;
        }

        .h187-article-item:hover {
            background: rgba(255,255,255,0.1);
        }

        /* 页脚 */
        .h187-footer {
            background: #1a1a1a;
            color: #999;
            padding: 80px 0 40px;
            font-size: 14px;
        }

        .h187-footer-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            margin-bottom: 64px;
        }

        .h187-footer-brand {
            flex: 2;
            min-width: 300px;
        }

        .h187-footer-brand h2 {
            color: var(--h187-white);
            margin-bottom: 24px;
            font-size: 28px;
        }

        .h187-footer-links {
            flex: 1;
            min-width: 200px;
        }

        .h187-footer-links h4 {
            color: var(--h187-white);
            margin-bottom: 24px;
            font-size: 18px;
        }

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

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

        .h187-footer-links ul li a {
            color: #999;
            text-decoration: none;
            transition: color 0.3s;
        }

        .h187-footer-links ul li a:hover {
            color: var(--h187-primary);
        }

        .h187-footer-bottom {
            padding-top: 40px;
            border-top: 1px solid #333;
            text-align: center;
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .h187-hero-flex {
                flex-direction: column;
                text-align: center;
            }
            .h187-hero p {
                margin-left: auto;
                margin-right: auto;
            }
            .h187-rules-visual {
                width: 100%;
            }
        }

        @media (max-width: 768px) {
            .h187-nav-menu {
                display: none; /* 简化移动端处理 */
            }
            .h187-section {
                padding: 64px 0;
            }
        }