:root {
            --h187-primary: #e67e22;
            --h187-primary-dark: #d35400;
            --h187-secondary: #2c3e50;
            --h187-accent: #f1c40f;
            --h187-bg-light: #f9fbfd;
            --h187-text: #2c3e50;
            --h187-text-muted: #7f8c8d;
            --h187-white: #ffffff;
            --h187-border: #e1e8ed;
            --h187-radius: 12px;
            --h187-shadow: 0 10px 30px rgba(0,0,0,0.05);
            --h187-container-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;
            line-height: 1.7;
            color: var(--h187-text);
            background-color: var(--h187-bg-light);
            word-break: keep-all;
            overflow-x: hidden;
        }

        /* 导航栏设计 */
        .h187-navbar {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--h187-border);
            padding: 12px 0;
        }

        .h187-nav-container {
            max-width: var(--h187-container-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
        }

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

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

        .h187-nav-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 16px;
            min-width: 0;
        }

        .h187-nav-menu a {
            text-decoration: none;
            color: var(--h187-text);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 8px 12px;
            border-radius: 6px;
            transition: all 0.3s ease;
        }

        .h187-nav-menu a:hover {
            color: var(--h187-primary);
            background: rgba(230, 126, 34, 0.05);
        }

        .h187-nav-menu a.h187-active {
            color: var(--h187-primary);
            background: rgba(230, 126, 34, 0.1);
        }

        /* Hero 区：命令面板风格 */
        .h187-hero {
            padding: 80px 24px;
            background: linear-gradient(135deg, #2c3e50 0%, #1a252f 100%);
            color: var(--h187-white);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .h187-hero::before {
            content: "CTRL + ALT + MERGE";
            position: absolute;
            top: 10%;
            left: 5%;
            font-size: 8rem;
            font-weight: 900;
            opacity: 0.03;
            white-space: nowrap;
            pointer-events: none;
        }

        .h187-hero-content {
            max-width: 800px;
            margin: 0 auto;
            position: relative;
            z-index: 2;
        }

        .h187-hero h1 {
            font-size: clamp(2rem, 4vw + 1rem, 3.5rem);
            line-height: 1.2;
            margin-bottom: 24px;
            font-weight: 800;
            word-break: break-word;
        }

        .h187-hero p {
            font-size: clamp(1.1rem, 1vw + 0.5rem, 1.3rem);
            opacity: 0.9;
            margin-bottom: 40px;
        }

        /* 快捷键仪表盘布局 */
        .h187-shortcut-dashboard {
            max-width: var(--h187-container-width);
            margin: -60px auto 80px;
            padding: 0 24px;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
            position: relative;
            z-index: 10;
        }

        .h187-category-card {
            background: var(--h187-white);
            border-radius: var(--h187-radius);
            padding: 32px;
            box-shadow: var(--h187-shadow);
            border: 1px solid var(--h187-border);
            min-width: 0;
            transition: transform 0.3s ease;
        }

        .h187-category-card:hover {
            transform: translateY(-5px);
        }

        .h187-category-card h3 {
            font-size: 1.5rem;
            margin-bottom: 24px;
            color: var(--h187-primary);
            display: flex;
            align-items: center;
            border-bottom: 2px solid rgba(230, 126, 34, 0.1);
            padding-bottom: 12px;
        }

        .h187-key-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 12px 0;
            border-bottom: 1px dashed var(--h187-border);
            min-width: 0;
        }

        .h187-key-row:last-child {
            border-bottom: none;
        }

        .h187-key-label {
            font-size: 1rem;
            color: var(--h187-text);
            flex: 1;
            padding-right: 16px;
            word-break: break-word;
        }

        .h187-kbd-group {
            display: flex;
            gap: 4px;
            flex-wrap: wrap;
            justify-content: flex-end;
            min-width: 0;
        }

        kbd {
            background: #f1f3f5;
            border: 1px solid #ced4da;
            border-bottom: 3px solid #adb5bd;
            border-radius: 4px;
            color: #495057;
            display: inline-block;
            font-family: inherit;
            font-size: 0.85rem;
            font-weight: 700;
            padding: 2px 8px;
            white-space: nowrap;
        }

        /* 核心算法逻辑展示区 */
        .h187-algo-section {
            background: #ffffff;
            padding: 96px 24px;
        }

        .h187-section-wrap {
            max-width: var(--h187-container-width);
            margin: 0 auto;
        }

        .h187-grid-2col {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            align-items: center;
        }

        .h187-grid-item {
            flex: 1;
            min-width: 320px;
        }

        .h187-badge {
            display: inline-block;
            background: rgba(230, 126, 34, 0.1);
            color: var(--h187-primary);
            padding: 6px 16px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.85rem;
            margin-bottom: 16px;
        }

        .h187-feature-list {
            list-style: none;
            margin-top: 24px;
        }

        .h187-feature-list li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 16px;
            color: var(--h187-text-muted);
        }

        .h187-feature-list li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--h187-primary);
            font-weight: bold;
        }

        /* 动态内容区：使用技巧 */
        .h187-tips-section {
            padding: 80px 24px;
            background: #f0f4f8;
        }

        .h187-tip-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
            margin-top: 40px;
        }

        .h187-tip-item {
            background: var(--h187-white);
            padding: 24px;
            border-radius: var(--h187-radius);
            border-left: 4px solid var(--h187-primary);
        }

        /* 页脚 */
        .h187-footer {
            background: var(--h187-secondary);
            color: var(--h187-white);
            padding: 64px 24px;
            margin-top: 0;
        }

        .h187-footer-inner {
            max-width: var(--h187-container-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            justify-content: space-between;
        }

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

        .h187-footer-brand h2 {
            font-size: 1.8rem;
            margin-bottom: 16px;
        }

        .h187-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
        }

        .h187-footer-col h4 {
            margin-bottom: 20px;
            font-size: 1.1rem;
            color: var(--h187-accent);
        }

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

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

        .h187-footer-col a {
            color: rgba(255,255,255,0.7);
            text-decoration: none;
            transition: color 0.3s;
        }

        .h187-footer-col a:hover {
            color: var(--h187-white);
        }

        .h187-copyright {
            max-width: var(--h187-container-width);
            margin: 48px auto 0;
            padding-top: 24px;
            border-top: 1px solid rgba(255,255,255,0.1);
            text-align: center;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.5);
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .h187-nav-container {
                flex-direction: column;
                gap: 16px;
            }
            .h187-nav-menu {
                justify-content: center;
            }
            .h187-hero {
                padding: 60px 20px;
            }
            .h187-shortcut-dashboard {
                margin-top: 20px;
            }
        }