:root {
            --gtmamk-primary: #ff6600;
            --gtmamk-primary-hover: #e65c00;
            --gtmamk-bg: #ffffff;
            --gtmamk-bg-soft: #f8f9fa;
            --gtmamk-text: #1d1d1f;
            --gtmamk-text-muted: #86868b;
            --gtmamk-glass: rgba(255, 255, 255, 0.8);
            --gtmamk-container-width: 1400px;
            --gtmamk-radius: 16px;
            --gtmamk-shadow: 0 10px 30px rgba(0,0,0,0.05);
            --gtmamk-font-fluid: clamp(1rem, 1vw + 0.5rem, 1.25rem);
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--gtmamk-text);
            background-color: var(--gtmamk-bg);
            line-height: 1.6;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        /* 布局基础 */
        .gtmamk-container {
            max-width: var(--gtmamk-container-width);
            margin: 0 auto;
            padding: 0 48px;
            width: 100%;
        }

        @media (max-width: 768px) {
            .gtmamk-container {
                padding: 0 24px;
            }
        }

        /* 导航栏 */
        .gtmamk-nav-wrapper {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--gtmamk-glass);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
        }

        .gtmamk-nav-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            height: 72px;
            min-width: 0;
        }

        .gtmamk-logo {
            flex-shrink: 0;
            height: 32px;
        }

        .gtmamk-logo img {
            height: 100%;
        }

        .gtmamk-menu {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            list-style: none;
            min-width: 0;
        }

        .gtmamk-menu a {
            font-size: 14px;
            font-weight: 500;
            color: var(--gtmamk-text);
            padding: 8px 4px;
            word-break: keep-all;
        }

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

        /* Hero 区域 - 独特非对称布局 */
        .gtmamk-hero {
            padding-top: 160px;
            padding-bottom: 96px;
            background: radial-gradient(circle at 80% 20%, rgba(255, 102, 0, 0.05) 0%, transparent 40%);
        }

        .gtmamk-hero-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 64px;
            align-items: center;
        }

        .gtmamk-hero-text {
            word-break: break-word;
        }

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

        .gtmamk-hero-subtitle {
            font-size: clamp(1.1rem, 2vw, 1.5rem);
            color: var(--gtmamk-text-muted);
            margin-bottom: 40px;
            max-width: 600px;
        }

        .gtmamk-hero-visual {
            position: relative;
            height: 400px;
            background: linear-gradient(135deg, #fff 0%, #f0f0f0 100%);
            border-radius: 40px;
            box-shadow: var(--gtmamk-shadow);
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .gtmamk-hero-visual::before {
            content: "SKIN PREVIEW";
            font-weight: 900;
            font-size: 80px;
            color: rgba(0,0,0,0.03);
            position: absolute;
            transform: rotate(-15deg);
        }

        /* 皮肤分类过滤 */
        .gtmamk-filter-section {
            padding: 32px 0;
            border-bottom: 1px solid #eee;
            position: sticky;
            top: 72px;
            background: #fff;
            z-index: 900;
        }

        .gtmamk-filter-list {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            min-width: 0;
        }

        .gtmamk-filter-item {
            padding: 10px 24px;
            background: var(--gtmamk-bg-soft);
            border-radius: 50px;
            font-size: 14px;
            cursor: pointer;
            word-break: keep-all;
        }

        .gtmamk-filter-item.active {
            background: var(--gtmamk-primary);
            color: #fff;
        }

        /* 皮肤网格 */
        .gtmamk-skin-section {
            padding: 64px 0;
        }

        .gtmamk-grid-header {
            margin-bottom: 40px;
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            flex-wrap: wrap;
            gap: 16px;
        }

        .gtmamk-skin-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 32px;
        }

        .gtmamk-skin-card {
            background: #fff;
            border-radius: var(--gtmamk-radius);
            overflow: hidden;
            transition: transform 0.4s cubic-bezier(0.165, 0.84, 0.44, 1), box-shadow 0.4s ease;
            border: 1px solid rgba(0,0,0,0.05);
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .gtmamk-skin-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.1);
        }

        .gtmamk-skin-image {
            aspect-ratio: 16/10;
            background: #f0f0f0;
            width: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .gtmamk-skin-card:hover .gtmamk-skin-image {
            transform: scale(1.05);
        }

        .gtmamk-skin-info {
            padding: 24px;
            flex-grow: 1;
            word-break: break-word;
        }

        .gtmamk-skin-name {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .gtmamk-skin-meta {
            font-size: 13px;
            color: var(--gtmamk-text-muted);
            margin-bottom: 20px;
            display: flex;
            justify-content: space-between;
        }

        .gtmamk-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 24px;
            border-radius: 12px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            border: none;
            width: 100%;
        }

        .gtmamk-btn-primary {
            background: var(--gtmamk-primary);
            color: #fff;
        }

        .gtmamk-btn-primary:hover {
            background: var(--gtmamk-primary-hover);
            box-shadow: 0 4px 15px rgba(255, 102, 0, 0.3);
        }

        /* 词库专区 - 独特水平滚动布局 */
        .gtmamk-lexicon-section {
            padding: 96px 0;
            background: #000;
            color: #fff;
            overflow: hidden;
        }

        .gtmamk-lexicon-header {
            margin-bottom: 64px;
            text-align: center;
        }

        .gtmamk-lexicon-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            min-width: 0;
        }

        .gtmamk-lexicon-card {
            flex: 1;
            min-width: 300px;
            background: rgba(255,255,255,0.05);
            padding: 48px;
            border-radius: 32px;
            border: 1px solid rgba(255,255,255,0.1);
            transition: background 0.3s ease;
        }

        .gtmamk-lexicon-card:hover {
            background: rgba(255,255,255,0.1);
        }

        .gtmamk-lexicon-industry {
            color: var(--gtmamk-primary);
            font-weight: 700;
            font-size: 14px;
            text-transform: uppercase;
            margin-bottom: 16px;
            display: block;
        }

        .gtmamk-lexicon-depth {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 24px;
        }

        .gtmamk-lexicon-samples {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 24px;
        }

        .gtmamk-lexicon-tag {
            background: rgba(255,255,255,0.1);
            padding: 4px 12px;
            border-radius: 4px;
            font-size: 12px;
        }

        /* 动态资讯 */
        .gtmamk-news-section {
            padding: 96px 0;
            background: var(--gtmamk-bg-soft);
        }

        .gtmamk-news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
            gap: 48px;
        }

        .gtmamk-news-item {
            padding-bottom: 24px;
            border-bottom: 1px solid #ddd;
            word-break: break-word;
        }

        .gtmamk-news-date {
            font-size: 14px;
            color: var(--gtmamk-text-muted);
            margin-bottom: 8px;
        }

        .gtmamk-news-title {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        /* 页脚 */
        .gtmamk-footer {
            padding: 96px 0 48px;
            background: #fff;
            border-top: 1px solid #eee;
        }

        .gtmamk-footer-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
            margin-bottom: 64px;
        }

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

        .gtmamk-footer-brand-name {
            font-size: 24px;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--gtmamk-primary);
        }

        .gtmamk-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            flex: 2;
            min-width: 0;
        }

        .gtmamk-footer-col {
            min-width: 140px;
        }

        .gtmamk-footer-col h4 {
            margin-bottom: 24px;
            font-size: 16px;
        }

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

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

        .gtmamk-footer-col a {
            color: var(--gtmamk-text-muted);
            font-size: 14px;
        }

        .gtmamk-footer-bottom {
            padding-top: 48px;
            border-top: 1px solid #eee;
            text-align: center;
            color: var(--gtmamk-text-muted);
            font-size: 13px;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .gtmamk-menu {
                display: none; /* 简化移动端，通常会有一个汉堡菜单 */
            }
            .gtmamk-hero-grid {
                grid-template-columns: 1fr;
            }
            .gtmamk-news-grid {
                grid-template-columns: 1fr;
            }
            .gtmamk-hero-visual {
                height: 250px;
            }
        }