/* 变量与基础重置 */
        :root {
            --h187-primary: #0056b3;
            --h187-secondary: #17a2b8;
            --h187-accent: #f39c12;
            --h187-dark: #2c3e50;
            --h187-light: #f8f9fa;
            --h187-text: #333333;
            --h187-gray: #e9ecef;
            --h187-white: #ffffff;
            --h187-gap: 8px;
            --h187-radius: 12px;
            --h187-container-width: 1100px;
            --h187-transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
        }

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

        body {
            font-family: "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--h187-text);
            line-height: 1.7;
            background-color: var(--h187-white);
            overflow-x: hidden;
            word-break: keep-all;
            overflow-wrap: break-word;
        }

        /* 导航系统 */
        .h187-navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 80px;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(15px);
            z-index: 1000;
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            display: flex;
            align-items: center;
            transition: var(--h187-transition);
        }

        .h187-navbar-active {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            height: 70px;
        }

        .h187-nav-container {
            max-width: var(--h187-container-width);
            width: 100%;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

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

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

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

        .h187-menu-item {
            min-width: 0;
        }

        .h187-menu-link {
            text-decoration: none;
            color: var(--h187-dark);
            font-size: clamp(0.875rem, 1vw + 0.5rem, 1rem);
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 6px;
            transition: var(--h187-transition);
            white-space: nowrap;
        }

        .h187-menu-link:hover {
            color: var(--h187-primary);
            background: rgba(0, 86, 179, 0.05);
        }

        .h187-menu-link.active {
            color: var(--h187-white);
            background: var(--h187-primary);
        }

        /* Hero 视觉区 - 独特的对角线分割布局 */
        .h187-hero {
            padding-top: 140px;
            padding-bottom: 96px;
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            position: relative;
            overflow: hidden;
        }

        .h187-hero-content {
            max-width: var(--h187-container-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
            position: relative;
            z-index: 2;
        }

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

        .h187-hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(0, 86, 179, 0.1);
            color: var(--h187-primary);
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 24px;
            border: 1px solid rgba(0, 86, 179, 0.2);
        }

        .h187-hero-title {
            font-size: clamp(2.5rem, 5vw, 3.8rem);
            line-height: 1.1;
            font-weight: 800;
            color: var(--h187-dark);
            margin-bottom: 24px;
            white-space: normal;
        }

        .h187-hero-subtitle {
            font-size: clamp(1.1rem, 2vw + 0.5rem, 1.4rem);
            color: #555;
            margin-bottom: 40px;
            max-width: 600px;
        }

        .h187-hero-visual {
            flex: 1;
            min-width: 320px;
            display: flex;
            justify-content: center;
            position: relative;
        }

        /* 模拟图片对比效果的UI组件 */
        .h187-diff-preview {
            width: 100%;
            max-width: 500px;
            aspect-ratio: 4/3;
            background: var(--h187-white);
            border-radius: var(--h187-radius);
            box-shadow: 0 30px 60px rgba(0, 0, 0, 0.15);
            position: relative;
            overflow: hidden;
            border: 8px solid var(--h187-white);
        }

        .h187-diff-before, .h187-diff-after {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 2rem;
            color: rgba(0,0,0,0.1);
        }

        .h187-diff-before {
            background: repeating-conic-gradient(#f0f0f0 0% 25%, #fff 0% 50%) 50% / 20px 20px;
        }

        .h187-diff-after {
            background: repeating-conic-gradient(#e0e0e0 0% 25%, #f5f5f5 0% 50%) 50% / 20px 20px;
            clip-path: inset(0 0 0 50%);
            border-left: 2px solid var(--h187-primary);
        }

        .h187-diff-slider {
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 4px;
            background: var(--h187-primary);
            transform: translateX(-50%);
            pointer-events: none;
        }

        .h187-diff-slider::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 40px;
            height: 40px;
            background: var(--h187-primary);
            border-radius: 50%;
            box-shadow: 0 0 15px rgba(0,0,0,0.2);
        }

        /* 核心模式区块 */
        .h187-section {
            padding: 96px 0;
            max-width: var(--h187-container-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

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

        .h187-section-title {
            font-size: clamp(1.8rem, 3vw, 2.5rem);
            color: var(--h187-dark);
            margin-bottom: 16px;
        }

        .h187-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
        }

        .h187-card {
            background: var(--h187-white);
            border: 1px solid var(--h187-gray);
            border-radius: var(--h187-radius);
            padding: 40px;
            transition: var(--h187-transition);
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .h187-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.05);
            border-color: var(--h187-primary);
        }

        .h187-card-icon {
            width: 64px;
            height: 64px;
            background: var(--h187-light);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 24px;
            color: var(--h187-primary);
            font-size: 1.5rem;
            font-weight: bold;
        }

        .h187-card-title {
            font-size: 1.5rem;
            margin-bottom: 16px;
            color: var(--h187-dark);
        }

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

        .h187-card-list li {
            position: relative;
            padding-left: 24px;
            margin-bottom: 12px;
            font-size: 0.95rem;
            color: #666;
        }

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

        .h187-edge-tag {
            margin-top: auto;
            padding-top: 20px;
            border-top: 1px dashed var(--h187-gray);
            font-style: italic;
            color: var(--h187-primary);
            font-size: 0.9rem;
        }

        /* 流程同步区块 - 视觉平衡 */
        .h187-ecosystem {
            background-color: var(--h187-light);
            padding: 96px 24px;
        }

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

        .h187-eco-item {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            align-items: center;
            margin-bottom: 64px;
        }

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

        .h187-eco-content {
            flex: 1;
            min-width: 300px;
        }

        .h187-eco-visual {
            flex: 1;
            min-width: 300px;
            background: var(--h187-white);
            height: 240px;
            border-radius: var(--h187-radius);
            box-shadow: inset 0 0 20px rgba(0,0,0,0.02);
            border: 1px solid rgba(0,0,0,0.05);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
            color: var(--h187-secondary);
            letter-spacing: 1px;
        }

        .h187-eco-scenario {
            font-size: 0.9rem;
            text-transform: uppercase;
            color: var(--h187-secondary);
            font-weight: 700;
            margin-bottom: 8px;
            display: block;
        }

        .h187-eco-title {
            font-size: 1.8rem;
            margin-bottom: 16px;
            color: var(--h187-dark);
        }

        /* 动态区块 */
        .h187-dynamic-section {
            border-top: 1px solid var(--h187-gray);
        }

        .h187-news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 24px;
        }

        .h187-news-item {
            padding: 24px;
            background: #fff;
            border-radius: 8px;
            border-left: 4px solid var(--h187-primary);
            transition: var(--h187-transition);
        }

        .h187-news-item:hover {
            background: var(--h187-light);
        }

        /* 页脚 */
        .h187-footer {
            background: var(--h187-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 80px 24px 40px;
        }

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

        .h187-footer-brand {
            flex: 1;
            min-width: 280px;
        }

        .h187-footer-brand-name {
            font-size: 2rem;
            font-weight: 800;
            color: var(--h187-white);
            margin-bottom: 16px;
        }

        .h187-footer-links {
            flex: 2;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 24px;
        }

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

        .h187-footer-list-title {
            color: var(--h187-white);
            font-weight: 600;
            margin-bottom: 20px;
        }

        .h187-footer-list a {
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
            display: block;
            margin-bottom: 10px;
            transition: var(--h187-transition);
        }

        .h187-footer-list a:hover {
            color: var(--h187-secondary);
        }

        .h187-copyright {
            max-width: var(--h187-container-width);
            margin: 64px auto 0;
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            text-align: center;
            font-size: 0.85rem;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .h187-navbar {
                height: auto;
                padding: 16px 0;
            }
            .h187-nav-container {
                flex-direction: column;
                gap: 16px;
            }
            .h187-menu {
                justify-content: center;
            }
            .h187-hero {
                padding-top: 180px;
                text-align: center;
            }
            .h187-hero-content {
                flex-direction: column;
            }
            .h187-hero-subtitle {
                margin-left: auto;
                margin-right: auto;
            }
            .h187-eco-item, .h187-eco-item:nth-child(even) {
                flex-direction: column;
            }
        }

        /* 辅助类 */
        .h187-btn {
            display: inline-block;
            padding: 14px 32px;
            background: var(--h187-primary);
            color: var(--h187-white);
            text-decoration: none;
            border-radius: 8px;
            font-weight: 600;
            transition: var(--h187-transition);
            border: none;
            cursor: pointer;
        }

        .h187-btn:hover {
            background: #004494;
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(0, 86, 179, 0.2);
        }

        .h187-btn-outline {
            background: transparent;
            border: 2px solid var(--h187-primary);
            color: var(--h187-primary);
        }

        .h187-btn-outline:hover {
            background: var(--h187-primary);
            color: var(--h187-white);
        }