:root {
            --gtmamk-primary: #FF6600;
            --gtmamk-primary-dark: #E65C00;
            --gtmamk-accent: #3366FF;
            --gtmamk-text-main: #1D1D1F;
            --gtmamk-text-sub: #424245;
            --gtmamk-bg-light: #F5F5F7;
            --gtmamk-white: #FFFFFF;
            --gtmamk-gap: 8px;
            --gtmamk-container-width: 1400px;
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
            color: var(--gtmamk-text-main);
            background-color: var(--gtmamk-white);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* 导航栏 */
        .gtmamk-navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 72px;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            z-index: 1000;
            border-bottom: 1px solid rgba(0,0,0,0.05);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .gtmamk-nav-container {
            width: var(--gtmamk-container-width);
            max-width: 95vw;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            min-width: 0;
        }

        .gtmamk-logo {
            display: flex;
            align-items: center;
            height: 40px;
        }

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

        .gtmamk-nav-links {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: calc(var(--gtmamk-gap) * 3);
            min-width: 0;
        }

        .gtmamk-nav-links a {
            text-decoration: none;
            color: var(--gtmamk-text-sub);
            font-size: 15px;
            font-weight: 500;
            transition: color 0.3s ease;
            white-space: nowrap;
        }

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

        /* Hero 区域 - 创意不对称布局 */
        .gtmamk-hero {
            padding-top: 120px;
            padding-bottom: 80px;
            display: flex;
            justify-content: center;
            background: linear-gradient(135deg, #FFF9F5 0%, #FFFFFF 100%);
            overflow: hidden;
        }

        .gtmamk-hero-wrapper {
            width: var(--gtmamk-container-width);
            max-width: 95vw;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
            min-width: 0;
        }

        .gtmamk-hero-content {
            flex: 1;
            min-width: 320px;
            word-break: break-word;
        }

        .gtmamk-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
            line-height: 1.1;
            font-weight: 700;
            margin-bottom: 24px;
            color: var(--gtmamk-text-main);
            word-break: keep-all;
        }

        .gtmamk-hero-subtitle {
            font-size: clamp(1.1rem, 1.5vw + 0.5rem, 1.5rem);
            color: var(--gtmamk-text-sub);
            margin-bottom: 40px;
            max-width: 600px;
        }

        .gtmamk-hero-image {
            flex: 1.2;
            min-width: 320px;
            position: relative;
        }

        .gtmamk-hero-image img {
            width: 100%;
            height: auto;
            border-radius: 24px;
            box-shadow: 0 40px 80px rgba(0,0,0,0.1);
            transition: transform 0.5s cubic-bezier(0.165, 0.84, 0.44, 1);
        }

        .gtmamk-hero-image:hover img {
            transform: scale(1.02);
        }

        .gtmamk-cta-btn {
            display: inline-block;
            padding: 18px 48px;
            background: var(--gtmamk-primary);
            color: white;
            text-decoration: none;
            border-radius: 50px;
            font-size: 18px;
            font-weight: 600;
            box-shadow: 0 10px 20px rgba(255, 102, 0, 0.2);
            transition: all 0.3s ease;
        }

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

        /* 行业词库 - 交互卡片 */
        .gtmamk-lexicons-section {
            padding: 96px 0;
            background-color: var(--gtmamk-bg-light);
            display: flex;
            justify-content: center;
        }

        .gtmamk-lexicons-container {
            width: var(--gtmamk-container-width);
            max-width: 95vw;
            min-width: 0;
        }

        .gtmamk-section-head {
            text-align: center;
            margin-bottom: 64px;
        }

        .gtmamk-section-title {
            font-size: clamp(2rem, 3vw, 3rem);
            margin-bottom: 16px;
            word-break: keep-all;
        }

        .gtmamk-lexicon-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 32px;
        }

        .gtmamk-lexicon-card {
            background: var(--gtmamk-white);
            padding: 40px;
            border-radius: 24px;
            transition: all 0.4s ease;
            display: flex;
            flex-direction: column;
            min-width: 0;
            border: 1px solid rgba(0,0,0,0.03);
        }

        .gtmamk-lexicon-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 30px 60px rgba(0,0,0,0.08);
        }

        .gtmamk-industry-tag {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(255, 102, 0, 0.1);
            color: var(--gtmamk-primary);
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 20px;
            align-self: flex-start;
        }

        .gtmamk-lexicon-depth {
            font-size: 16px;
            color: var(--gtmamk-text-sub);
            margin-bottom: 24px;
        }

        .gtmamk-sample-terms {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 24px;
            min-width: 0;
        }

        .gtmamk-term-chip {
            background: #F0F0F2;
            padding: 4px 12px;
            border-radius: 4px;
            font-size: 13px;
            color: #515154;
            word-break: break-word;
        }

        /* AI引擎 - 全宽图文 */
        .gtmamk-ai-engine {
            padding: 120px 0;
            display: flex;
            justify-content: center;
            background: var(--gtmamk-white);
        }

        .gtmamk-ai-wrapper {
            width: var(--gtmamk-container-width);
            max-width: 95vw;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 64px;
            min-width: 0;
        }

        .gtmamk-ai-visual {
            flex: 1;
            min-width: 320px;
        }

        .gtmamk-ai-visual img {
            width: 100%;
            border-radius: 32px;
            object-fit: cover;
            loading: lazy;
        }

        .gtmamk-ai-text {
            flex: 0.8;
            min-width: 320px;
            word-break: break-word;
        }

        .gtmamk-ai-text h2 {
            font-size: 2.5rem;
            margin-bottom: 24px;
            line-height: 1.3;
        }

        .gtmamk-ai-text p {
            font-size: 1.15rem;
            color: var(--gtmamk-text-sub);
            line-height: 1.8;
        }

        /* 多端同步 - 现代感错位布局 */
        .gtmamk-sync-section {
            padding: 96px 0;
            background-color: #000;
            color: #FFF;
            overflow: hidden;
            display: flex;
            justify-content: center;
        }

        .gtmamk-sync-container {
            width: var(--gtmamk-container-width);
            max-width: 95vw;
            display: flex;
            flex-wrap: wrap-reverse;
            align-items: center;
            gap: 48px;
            min-width: 0;
        }

        .gtmamk-sync-content {
            flex: 1;
            min-width: 320px;
        }

        .gtmamk-sync-image {
            flex: 1.2;
            min-width: 320px;
            position: relative;
        }

        .gtmamk-sync-image img {
            width: 110%;
            margin-left: -5%;
            border-radius: 20px;
            box-shadow: 0 0 50px rgba(255,102,0,0.2);
            loading: lazy;
        }

        .gtmamk-sync-title {
            font-size: 3rem;
            margin-bottom: 32px;
            background: linear-gradient(90deg, #FFFFFF, #FF6600);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        /* 场景展示 - 大气留白 */
        .gtmamk-scene-section {
            padding: 120px 0;
            display: flex;
            justify-content: center;
        }

        .gtmamk-scene-grid {
            width: var(--gtmamk-container-width);
            max-width: 95vw;
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            min-width: 0;
        }

        .gtmamk-scene-card {
            flex: 1;
            min-width: 300px;
            background: #FAFAFA;
            border-radius: 32px;
            padding: 48px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .gtmamk-scene-img-wrap {
            margin-top: 40px;
            overflow: hidden;
            border-radius: 16px;
        }

        .gtmamk-scene-img-wrap img {
            width: 100%;
            height: auto;
            display: block;
            transition: transform 0.8s ease;
        }

        .gtmamk-scene-card:hover .gtmamk-scene-img-wrap img {
            transform: scale(1.1);
        }

        /* 动态内容区块 - 列表 */
        .gtmamk-news-section {
            padding: 80px 0;
            background: #F9F9FB;
            display: flex;
            justify-content: center;
        }

        .gtmamk-news-container {
            width: var(--gtmamk-container-width);
            max-width: 95vw;
            min-width: 0;
        }

        .gtmamk-article-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
            margin-top: 40px;
        }

        .gtmamk-article-item {
            background: #FFF;
            padding: 24px;
            border-radius: 16px;
            border: 1px solid #EDEDEF;
            transition: border-color 0.3s ease;
        }

        .gtmamk-article-item:hover {
            border-color: var(--gtmamk-primary);
        }

        .gtmamk-article-item h3 {
            font-size: 18px;
            margin-bottom: 12px;
        }

        .gtmamk-article-date {
            color: #999;
            font-size: 14px;
        }

        /* 页脚 */
        .gtmamk-footer {
            background: #F5F5F7;
            padding: 80px 0 40px;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .gtmamk-footer-grid {
            width: var(--gtmamk-container-width);
            max-width: 95vw;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 48px;
            margin-bottom: 64px;
            min-width: 0;
        }

        .gtmamk-footer-col h4 {
            margin-bottom: 24px;
            font-size: 16px;
            color: var(--gtmamk-text-main);
        }

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

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

        .gtmamk-footer-col a {
            text-decoration: none;
            color: var(--gtmamk-text-sub);
            font-size: 14px;
            transition: color 0.3s;
        }

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

        .gtmamk-footer-bottom {
            width: var(--gtmamk-container-width);
            max-width: 95vw;
            padding-top: 32px;
            border-top: 1px solid #E5E5E7;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            color: #86868B;
            font-size: 12px;
        }

        .gtmamk-brand-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--gtmamk-text-main);
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            :root {
                --gtmamk-container-width: 92vw;
            }
            .gtmamk-hero-wrapper {
                flex-direction: column;
                text-align: center;
            }
            .gtmamk-hero-subtitle {
                margin-left: auto;
                margin-right: auto;
            }
            .gtmamk-sync-image img {
                width: 100%;
                margin-left: 0;
            }
        }

        @media (max-width: 768px) {
            .gtmamk-nav-links {
                display: none; /* 简化移动端，实际应为汉堡菜单 */
            }
            .gtmamk-lexicon-grid {
                grid-template-columns: 1fr;
            }
            .gtmamk-ai-wrapper {
                flex-direction: column;
            }
            .gtmamk-sync-container {
                flex-direction: column-reverse;
            }
            .gtmamk-scene-grid {
                flex-direction: column;
            }
            .gtmamk-footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }