/* 变量与基础重置 */
        :root {
            --w87eju-primary: #ff6600;
            --w87eju-primary-dark: #e65c00;
            --w87eju-secondary: #2c3e50;
            --w87eju-text: #333333;
            --w87eju-text-light: #666666;
            --w87eju-bg-light: #fdfdfd;
            --w87eju-bg-alt: #f4f7f9;
            --w87eju-white: #ffffff;
            --w87eju-gap: 8px;
            --w87eju-container: 1140px;
            --w87eju-radius: 16px;
            --w87eju-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
            color: var(--w87eju-text);
            background-color: var(--w87eju-bg-light);
            line-height: 1.6;
            overflow-x: hidden;
            word-break: break-word;
        }

        /* 布局通用类 */
        .w87eju-container {
            max-width: var(--w87eju-container);
            margin: 0 auto;
            padding: 0 calc(var(--w87eju-gap) * 3);
        }

        .w87eju-flex {
            display: flex;
            flex-wrap: wrap;
        }

        .w87eju-flex-item {
            min-width: 0;
        }

        /* 导航系统 */
        .w87eju-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            transition: var(--w87eju-transition);
        }

        .w87eju-nav-wrapper {
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .w87eju-logo {
            flex-shrink: 0;
        }

        .w87eju-logo img {
            height: 36px;
            width: auto;
            display: block;
        }

        .w87eju-nav-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: calc(var(--w87eju-gap) * 3);
        }

        .w87eju-nav-menu a {
            text-decoration: none;
            color: var(--w87eju-secondary);
            font-weight: 500;
            font-size: 15px;
            padding: 4px 0;
            position: relative;
            transition: var(--w87eju-transition);
        }

        .w87eju-nav-menu a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--w87eju-primary);
            transition: var(--w87eju-transition);
        }

        .w87eju-nav-menu a:hover {
            color: var(--w87eju-primary);
        }

        .w87eju-nav-menu a:hover::after,
        .w87eju-nav-menu a.w87eju-active::after {
            width: 100%;
        }

        .w87eju-nav-menu a.w87eju-active {
            color: var(--w87eju-primary);
        }

        /* Hero 区块 - 独特非对称布局 */
        .w87eju-hero {
            padding: calc(var(--w87eju-gap) * 12) 0;
            background: linear-gradient(135deg, #fff 0%, #fff5ee 100%);
            overflow: hidden;
            position: relative;
        }

        .w87eju-hero-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: calc(var(--w87eju-gap) * 6);
            align-items: center;
        }

        .w87eju-hero-content {
            z-index: 2;
        }

        .w87eju-hero-title {
            font-size: clamp(2rem, 4vw + 1rem, 3.5rem);
            font-weight: 800;
            line-height: 1.2;
            color: var(--w87eju-secondary);
            margin-bottom: calc(var(--w87eju-gap) * 3);
            word-break: keep-all;
        }

        .w87eju-hero-subtitle {
            font-size: clamp(1rem, 2vw + 0.5rem, 1.25rem);
            color: var(--w87eju-text-light);
            margin-bottom: calc(var(--w87eju-gap) * 5);
            max-width: 600px;
        }

        .w87eju-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: calc(var(--w87eju-gap) * 2);
        }

        .w87eju-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 16px 40px;
            border-radius: 50px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--w87eju-transition);
            cursor: pointer;
            border: none;
        }

        .w87eju-btn-primary {
            background: linear-gradient(45deg, var(--w87eju-primary), #ff8c00);
            color: white;
            box-shadow: 0 10px 20px rgba(255, 102, 0, 0.2);
        }

        .w87eju-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 30px rgba(255, 102, 0, 0.3);
        }

        .w87eju-hero-visual {
            position: relative;
            background: var(--w87eju-white);
            border-radius: var(--w87eju-radius);
            padding: 40px;
            box-shadow: 0 30px 60px rgba(0,0,0,0.1);
            transform: rotate(2deg);
        }

        .w87eju-handwriting-canvas {
            aspect-ratio: 4/3;
            border: 2px dashed #ddd;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #fafafa;
            color: #ccc;
            font-style: italic;
        }

        /* 生产力矩阵区块 - 卡片流 */
        .w87eju-matrix-section {
            padding: calc(var(--w87eju-gap) * 12) 0;
            background: var(--w87eju-white);
        }

        .w87eju-section-header {
            text-align: center;
            margin-bottom: calc(var(--w87eju-gap) * 8);
        }

        .w87eju-section-title {
            font-size: clamp(1.8rem, 3vw, 2.5rem);
            margin-bottom: var(--w87eju-gap);
            color: var(--w87eju-secondary);
        }

        .w87eju-matrix-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: calc(var(--w87eju-gap) * 4);
        }

        .w87eju-matrix-card {
            background: var(--w87eju-bg-alt);
            padding: calc(var(--w87eju-gap) * 5);
            border-radius: var(--w87eju-radius);
            transition: var(--w87eju-transition);
            border: 1px solid transparent;
        }

        .w87eju-matrix-card:hover {
            background: var(--w87eju-white);
            border-color: var(--w87eju-primary);
            box-shadow: 0 20px 40px rgba(0,0,0,0.05);
            transform: translateY(-8px);
        }

        .w87eju-matrix-name {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: calc(var(--w87eju-gap) * 2);
            color: var(--w87eju-primary);
        }

        .w87eju-matrix-caps {
            margin-bottom: calc(var(--w87eju-gap) * 3);
        }

        .w87eju-matrix-tag {
            display: inline-block;
            background: rgba(255, 102, 0, 0.1);
            color: var(--w87eju-primary);
            padding: 4px 12px;
            border-radius: 4px;
            font-size: 13px;
            margin: 0 4px 4px 0;
        }

        .w87eju-matrix-usecase {
            font-size: 14px;
            color: var(--w87eju-text-light);
            border-top: 1px solid rgba(0,0,0,0.05);
            padding-top: calc(var(--w87eju-gap) * 2);
        }

        /* 动态资讯区块 */
        .w87eju-news-section {
            padding: calc(var(--w87eju-gap) * 10) 0;
            background: var(--w87eju-bg-alt);
        }

        .w87eju-news-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: calc(var(--w87eju-gap) * 3);
        }

        .w87eju-news-item {
            background: var(--w87eju-white);
            padding: calc(var(--w87eju-gap) * 3);
            border-radius: 12px;
            text-decoration: none;
            color: inherit;
            display: block;
            transition: var(--w87eju-transition);
        }

        .w87eju-news-item:hover {
            color: var(--w87eju-primary);
        }

        /* 页脚设计 */
        .w87eju-footer {
            background: var(--w87eju-secondary);
            color: rgba(255,255,255,0.8);
            padding: calc(var(--w87eju-gap) * 10) 0 calc(var(--w87eju-gap) * 4);
        }

        .w87eju-footer-grid {
            display: grid;
            grid-template-columns: 2fr repeat(3, 1fr);
            gap: calc(var(--w87eju-gap) * 6);
            margin-bottom: calc(var(--w87eju-gap) * 8);
        }

        .w87eju-footer-brand h2 {
            color: var(--w87eju-white);
            font-size: 1.5rem;
            margin-bottom: calc(var(--w87eju-gap) * 2);
        }

        .w87eju-footer-links h4 {
            color: var(--w87eju-white);
            margin-bottom: calc(var(--w87eju-gap) * 3);
        }

        .w87eju-footer-links ul {
            list-style: none;
        }

        .w87eju-footer-links li {
            margin-bottom: var(--w87eju-gap);
        }

        .w87eju-footer-links a {
            color: rgba(255,255,255,0.6);
            text-decoration: none;
            transition: var(--w87eju-transition);
        }

        .w87eju-footer-links a:hover {
            color: var(--w87eju-primary);
        }

        .w87eju-copyright {
            text-align: center;
            padding-top: calc(var(--w87eju-gap) * 4);
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 13px;
        }

        /* 响应式适配 */
        @media (max-width: 992px) {
            .w87eju-hero-grid {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .w87eju-hero-subtitle {
                margin-left: auto;
                margin-right: auto;
            }
            .w87eju-cta-group {
                justify-content: center;
            }
            .w87eju-hero-visual {
                transform: rotate(0);
                max-width: 500px;
                margin: 0 auto;
            }
        }

        @media (max-width: 768px) {
            .w87eju-nav-menu {
                display: none; /* 简化演示，手机端通常使用汉堡菜单 */
            }
            .w87eju-footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 480px) {
            .w87eju-footer-grid {
                grid-template-columns: 1fr;
            }
        }