* { margin: 0; padding: 0; box-sizing: border-box; }
        body {
            font-family: 'Microsoft YaHei', sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
        }
        .header {
            background: rgba(255,255,255,0.1);
            backdrop-filter: blur(10px);
            color: white;
            padding: 20px;
            text-align: center;
            border-bottom: 1px solid rgba(255,255,255,0.2);
        }
        .header h1 {
            font-size: 1.8rem;
            text-shadow: 0 2px 4px rgba(0,0,0,0.3);
        }

        .tab-wrapper {
            max-width: 1400px;
            margin: 20px auto 0;
            padding: 0 10px;
        }
        .tab-bar {
            display: flex;
            gap: 4px;
            background: rgba(255,255,255,0.95);
            border-radius: 12px 12px 0 0;
            overflow-x: auto;
            overflow-y: hidden;
            scrollbar-width: none;
            -ms-overflow-style: none;
            box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
        }
        .tab-bar::-webkit-scrollbar {
            display: none;
        }
        .tab-btn {
            flex-shrink: 0;
            padding: 14px 28px;
            border: none;
            background: transparent;
            cursor: pointer;
            font-size: 0.95rem;
            font-weight: 500;
            color: #4a5568;
            transition: all 0.3s ease;
            position: relative;
            white-space: nowrap;
        }
        .tab-btn:hover {
            background: #f7fafc;
            color: #2d3748;
        }
        .tab-btn.active {
            background: white;
            color: #667eea;
        }
        .tab-btn.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 15%;
            right: 15%;
            height: 3px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border-radius: 3px 3px 0 0;
        }

        .content-frame {
            max-width: 1400px;
            margin: 0 auto 20px;
            background: white;
            border-radius: 0 0 12px 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
            overflow: hidden;
            height: calc(100vh - 160px);
        }
        .content-frame iframe {
            width: 100%;
            height: 100%;
            border: none;
            display: none;
        }
        .content-frame iframe.active {
            display: block;
        }

        .footer-section {
            max-width: 1400px;
            margin: 0 auto 20px;
            padding: 0 10px;
        }
        .recommend-card {
            background: rgba(255,255,255,0.95);
            border-radius: 12px;
            padding: 24px 30px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.15);
            margin-bottom: 15px;
        }
        .recommend-card h2 {
            font-size: 1.1rem;
            color: #2d3748;
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid #e2e8f0;
        }
        .next-editor {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
        }
        .next-editor img {
            width: 64px;
            height: 64px;
            border-radius: 12px;
            object-fit: cover;
            box-shadow: 0 4px 12px rgba(0,0,0,0.15);
        }
        .next-editor-info {
            flex: 1;
            min-width: 200px;
        }
        .next-editor-info .name {
            font-size: 1.15rem;
            font-weight: bold;
            color: #2d3748;
            margin-bottom: 8px;
        }
        .next-editor-info .desc {
            font-size: 0.85rem;
            color: #718096;
            margin-bottom: 10px;
        }
        .link-group {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .link-group a {
            display: inline-block;
            padding: 6px 14px;
            border-radius: 6px;
            font-size: 0.85rem;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.2s ease;
        }
        .link-download {
            background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
            color: white;
        }
        .link-download:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(79, 172, 254, 0.4);
        }
        .link-repo {
            background: #f8fafc;
            color: #4a5568;
            border: 1px solid #e2e8f0;
        }
        .link-repo:hover {
            background: #edf2f7;
            border-color: #cbd5e0;
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .friend-links a {
            display: inline-block;
            padding: 8px 16px;
            background: #f8fafc;
            border: 1px solid #e2e8f0;
            border-radius: 8px;
            color: #4a5568;
            text-decoration: none;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all 0.2s ease;
        }
        .friend-links a:hover {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border-color: transparent;
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
        }

        @media (max-width: 768px) {
            .tab-btn { padding: 12px 18px; font-size: 0.85rem; }
            .header h1 { font-size: 1.4rem; }
            .content-frame { height: calc(100vh - 260px); margin: 0 10px 10px; }
            .tab-wrapper { margin: 10px 0 0; }
            .recommend-card { padding: 18px 20px; }
            .next-editor { gap: 14px; }
            .next-editor img { width: 48px; height: 48px; }
        }