:root {
            --w87eju-primary: #ff4d4f;
            --w87eju-primary-hover: #ff7875;
            --w87eju-bg: #ffffff;
            --w87eju-secondary-bg: #f5f5f7;
            --w87eju-text-main: #1d1d1f;
            --w87eju-text-sub: #86868b;
            --w87eju-accent: #0071e3;
            --w87eju-container-width: 1300px;
            --w87eju-transition: all 0.4s cubic-bezier(0.25, 1, 0.5, 1);
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--w87eju-bg);
            color: var(--w87eju-text-main);
            line-height: 1.6;
            overflow-x: hidden;
            word-break: keep-all;
        }

        /* 导航栏 */
        .w87eju-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
        }

        .w87eju-nav-container {
            max-width: var(--w87eju-container-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            height: 64px;
        }

        .w87eju-logo {
            flex-shrink: 0;
            height: 32px;
            display: flex;
            align-items: center;
        }

        .w87eju-logo img {
            height: 100%;
            width: auto;
        }

        .w87eju-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 24px;
            margin-left: 48px;
        }

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

        .w87eju-menu-link {
            text-decoration: none;
            color: var(--w87eju-text-main);
            font-size: 14px;
            font-weight: 500;
            transition: var(--w87eju-transition);
            opacity: 0.8;
        }

        .w87eju-menu-link:hover {
            color: var(--w87eju-primary);
            opacity: 1;
        }

        .w87eju-menu-link.active {
            color: var(--w87eju-primary);
            font-weight: 600;
            opacity: 1;
        }

        /* Hero 区块 - 独特非对称布局 */
        .w87eju-hero {
            padding: 160px 24px 96px;
            background: radial-gradient(circle at 90% 10%, #fff5f5 0%, #ffffff 100%);
            overflow: hidden;
        }

        .w87eju-hero-content {
            max-width: var(--w87eju-container-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 64px;
        }

        .w87eju-hero-text {
            flex: 1;
            min-width: 320px;
        }

        .w87eju-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4rem);
            line-height: 1.1;
            font-weight: 800;
            margin-bottom: 24px;
            letter-spacing: -0.02em;
            word-break: break-word;
        }

        .w87eju-hero-subtitle {
            font-size: clamp(1.1rem, 2vw + 0.5rem, 1.4rem);
            color: var(--w87eju-text-sub);
            margin-bottom: 40px;
            max-width: 600px;
            line-height: 1.8;
            word-break: break-word;
        }

        .w87eju-hero-visual {
            flex: 1.2;
            min-width: 320px;
            position: relative;
        }

        /* 皮肤展示卡片组 */
        .w87eju-skin-stack {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            transform: perspective(1000px) rotateY(-10deg) rotateX(5deg);
        }

        .w87eju-skin-mockup {
            background: linear-gradient(135deg, #fce4ec, #f3e5f5);
            border-radius: 20px;
            padding: 16px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.1);
            transition: var(--w87eju-transition);
            min-width: 0;
        }

        .w87eju-skin-mockup:hover {
            transform: translateY(-15px) scale(1.05);
            box-shadow: 0 30px 60px rgba(255, 77, 79, 0.15);
        }

        .w87eju-skin-preview-box {
            aspect-ratio: 16/10;
            background: #fff;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            color: #ccc;
            overflow: hidden;
            position: relative;
        }

        .w87eju-skin-pattern-1 { background: linear-gradient(45deg, #ff9a9e 0%, #fad0c4 99%, #fad0c4 100%); }
        .w87eju-skin-pattern-2 { background: linear-gradient(to top, #a18cd1 0%, #fbc2eb 100%); }
        .w87eju-skin-pattern-3 { background: linear-gradient(120deg, #84fab0 0%, #8fd3f4 100%); }
        .w87eju-skin-pattern-4 { background: linear-gradient(120deg, #f6d365 0%, #fda085 100%); }

        /* 分类筛选区 */
        .w87eju-filter-section {
            padding: 48px 24px;
            background: var(--w87eju-bg);
            position: sticky;
            top: 64px;
            z-index: 99;
            border-bottom: 1px solid #f0f0f0;
        }

        .w87eju-filter-container {
            max-width: var(--w87eju-container-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }

        .w87eju-filter-btn {
            padding: 10px 24px;
            border-radius: 30px;
            border: 1px solid #e0e0e0;
            background: none;
            cursor: pointer;
            font-size: 14px;
            transition: var(--w87eju-transition);
        }

        .w87eju-filter-btn:hover, .w87eju-filter-btn.active {
            background: var(--w87eju-primary);
            color: white;
            border-color: var(--w87eju-primary);
        }

        /* 皮肤列表瀑布流 */
        .w87eju-section {
            padding: 80px 24px;
            max-width: var(--w87eju-container-width);
            margin: 0 auto;
        }

        .w87eju-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 32px;
        }

        .w87eju-skin-card {
            background: #fff;
            border-radius: 16px;
            overflow: hidden;
            transition: var(--w87eju-transition);
            border: 1px solid #f0f0f0;
            min-width: 0;
        }

        .w87eju-skin-card:hover {
            border-color: var(--w87eju-primary);
            transform: translateY(-8px);
        }

        .w87eju-card-img {
            width: 100%;
            aspect-ratio: 1.5;
            background: #f8f8f8;
            position: relative;
        }

        .w87eju-card-info {
            padding: 20px;
        }

        .w87eju-card-title {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .w87eju-card-meta {
            font-size: 13px;
            color: var(--w87eju-text-sub);
            display: flex;
            justify-content: space-between;
        }

        /* 办公矩阵区 */
        .w87eju-matrix-section {
            background: var(--w87eju-secondary-bg);
            padding: 96px 24px;
        }

        .w87eju-matrix-container {
            max-width: var(--w87eju-container-width);
            margin: 0 auto;
        }

        .w87eju-matrix-title {
            text-align: center;
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 64px;
        }

        .w87eju-matrix-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 24px;
        }

        .w87eju-matrix-item {
            background: white;
            padding: 40px;
            border-radius: 24px;
            min-width: 0;
            transition: var(--w87eju-transition);
        }

        .w87eju-matrix-item:hover {
            box-shadow: 0 20px 40px rgba(0,0,0,0.05);
        }

        .w87eju-matrix-tag {
            color: var(--w87eju-primary);
            font-weight: 600;
            font-size: 14px;
            text-transform: uppercase;
            margin-bottom: 16px;
            display: block;
        }

        .w87eju-matrix-name {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .w87eju-matrix-desc {
            color: var(--w87eju-text-sub);
            font-size: 16px;
            margin-bottom: 24px;
        }

        .w87eju-matrix-list {
            list-style: none;
        }

        .w87eju-matrix-list li {
            position: relative;
            padding-left: 24px;
            margin-bottom: 10px;
            font-size: 14px;
        }

        .w87eju-matrix-list li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: #52c41a;
            font-weight: bold;
        }

        /* 页脚 */
        .w87eju-footer {
            background: #1d1d1f;
            color: #fff;
            padding: 80px 24px 40px;
        }

        .w87eju-footer-content {
            max-width: var(--w87eju-container-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
        }

        .w87eju-footer-brand {
            flex: 1.5;
            min-width: 250px;
        }

        .w87eju-footer-name {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 24px;
            color: #fff;
        }

        .w87eju-footer-slogan {
            color: #86868b;
            font-size: 14px;
            max-width: 300px;
        }

        .w87eju-footer-links {
            flex: 2;
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
        }

        .w87eju-footer-group {
            min-width: 120px;
        }

        .w87eju-footer-heading {
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 20px;
            color: #f5f5f7;
        }

        .w87eju-footer-link {
            display: block;
            color: #86868b;
            text-decoration: none;
            font-size: 14px;
            margin-bottom: 12px;
            transition: var(--w87eju-transition);
        }

        .w87eju-footer-link:hover {
            color: #fff;
        }

        .w87eju-copyright {
            max-width: var(--w87eju-container-width);
            margin: 48px auto 0;
            padding-top: 32px;
            border-top: 1px solid #333;
            color: #424245;
            font-size: 12px;
            text-align: center;
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .w87eju-hero-content {
                flex-direction: column;
                text-align: center;
            }
            .w87eju-hero-text {
                display: flex;
                flex-direction: column;
                align-items: center;
            }
            .w87eju-hero-visual {
                width: 100%;
                transform: none;
            }
            .w87eju-skin-stack {
                transform: none;
            }
        }

        @media (max-width: 768px) {
            .w87eju-menu {
                display: none; /* 简化演示：移动端隐藏主菜单 */
            }
            .w87eju-hero {
                padding-top: 120px;
            }
            .w87eju-matrix-grid, .w87eju-grid {
                grid-template-columns: 1fr;
            }
        }