:root {
            --gtmamk-primary: #ff4d4f;
            --gtmamk-primary-hover: #ff7875;
            --gtmamk-bg-light: #ffffff;
            --gtmamk-bg-soft: #fdf2f2;
            --gtmamk-text-main: #262626;
            --gtmamk-text-secondary: #595959;
            --gtmamk-border: #f0f0f0;
            --gtmamk-shadow: 0 8px 24px rgba(255, 77, 79, 0.08);
            --gtmamk-container-width: 1100px;
        }

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

        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--gtmamk-text-main);
            background-color: var(--gtmamk-bg-light);
            line-height: 1.8;
            overflow-x: hidden;
        }

        /* 导航栏 */
        .gtmamk-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--gtmamk-border);
        }

        .gtmamk-nav-container {
            max-width: var(--gtmamk-container-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            height: 72px;
        }

        .gtmamk-logo {
            flex: 0 0 auto;
            min-width: 0;
        }

        .gtmamk-logo img {
            height: 32px;
            display: block;
        }

        .gtmamk-nav-links {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 20px;
            min-width: 0;
        }

        .gtmamk-nav-links a {
            text-decoration: none;
            color: var(--gtmamk-text-main);
            font-size: 14px;
            font-weight: 500;
            transition: color 0.3s ease;
            word-break: keep-all;
        }

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

        /* Hero 区 - 独特对角线布局 */
        .gtmamk-hero {
            padding-top: 160px;
            padding-bottom: 96px;
            background: linear-gradient(135deg, #fff 0%, var(--gtmamk-bg-soft) 100%);
            position: relative;
            overflow: hidden;
        }

        .gtmamk-hero-content {
            max-width: var(--gtmamk-container-width);
            margin: 0 auto;
            padding: 0 24px;
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .gtmamk-hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: var(--gtmamk-primary);
            color: white;
            border-radius: 32px;
            font-size: 14px;
            margin-bottom: 24px;
            font-weight: bold;
            word-break: keep-all;
        }

        .gtmamk-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4rem);
            line-height: 1.2;
            margin-bottom: 24px;
            font-weight: 800;
            color: var(--gtmamk-text-main);
            word-break: keep-all;
        }

        .gtmamk-hero-subtitle {
            font-size: clamp(1.1rem, 1vw + 0.8rem, 1.4rem);
            color: var(--gtmamk-text-secondary);
            max-width: 700px;
            margin: 0 auto 48px;
            word-break: break-word;
        }

        .gtmamk-hero-btns {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
            min-width: 0;
        }

        .gtmamk-btn {
            padding: 14px 36px;
            border-radius: 12px;
            font-size: 16px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
            cursor: pointer;
            word-break: keep-all;
        }

        .gtmamk-btn-primary {
            background: var(--gtmamk-primary);
            color: white;
            box-shadow: 0 4px 14px rgba(255, 77, 79, 0.3);
        }

        .gtmamk-btn-primary:hover {
            background: var(--gtmamk-primary-hover);
            transform: translateY(-2px);
        }

        .gtmamk-btn-outline {
            background: transparent;
            border: 2px solid var(--gtmamk-primary);
            color: var(--gtmamk-primary);
        }

        .gtmamk-btn-outline:hover {
            background: var(--gtmamk-bg-soft);
            transform: translateY(-2px);
        }

        /* 核心问题区块 */
        .gtmamk-review-section {
            padding: 96px 0;
            max-width: var(--gtmamk-container-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .gtmamk-section-title {
            font-size: clamp(1.8rem, 3vw + 0.5rem, 2.5rem);
            text-align: center;
            margin-bottom: 64px;
            font-weight: 700;
        }

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

        .gtmamk-analysis-card {
            background: #fff;
            padding: 40px;
            border-radius: 20px;
            border: 1px solid var(--gtmamk-border);
            transition: all 0.3s ease;
            min-width: 0;
        }

        .gtmamk-analysis-card:hover {
            box-shadow: var(--gtmamk-shadow);
            transform: translateY(-8px);
            border-color: var(--gtmamk-primary);
        }

        .gtmamk-card-num {
            font-size: 48px;
            font-weight: 900;
            color: rgba(255, 77, 79, 0.1);
            margin-bottom: -20px;
            display: block;
        }

        .gtmamk-card-title {
            font-size: 22px;
            margin-bottom: 16px;
            color: var(--gtmamk-text-main);
        }

        .gtmamk-card-text {
            color: var(--gtmamk-text-secondary);
            font-size: 15px;
        }

        /* 专业词库区块 - 独特交错布局 */
        .gtmamk-lexicon-section {
            padding: 96px 0;
            background-color: #fcfcfc;
        }

        .gtmamk-lexicon-container {
            max-width: var(--gtmamk-container-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .gtmamk-lexicon-item {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
            margin-bottom: 80px;
        }

        .gtmamk-lexicon-item:nth-child(even) {
            flex-direction: row-reverse;
        }

        .gtmamk-lexicon-content {
            flex: 1;
            min-width: 300px;
        }

        .gtmamk-lexicon-visual {
            flex: 1;
            min-width: 300px;
            background: white;
            padding: 32px;
            border-radius: 24px;
            box-shadow: var(--gtmamk-shadow);
            border: 1px solid var(--gtmamk-border);
        }

        .gtmamk-industry-tag {
            color: var(--gtmamk-primary);
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 12px;
            display: block;
        }

        .gtmamk-industry-title {
            font-size: 28px;
            margin-bottom: 20px;
            font-weight: 700;
        }

        .gtmamk-lexicon-pills {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 24px;
        }

        .gtmamk-pill {
            padding: 8px 16px;
            background: var(--gtmamk-bg-soft);
            color: var(--gtmamk-primary);
            border-radius: 8px;
            font-size: 14px;
            font-family: monospace;
            word-break: keep-all;
        }

        /* 资讯区块 */
        .gtmamk-news-section {
            padding: 96px 0;
            max-width: var(--gtmamk-container-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* 页脚 */
        .gtmamk-footer {
            background: #1a1a1a;
            color: #8c8c8c;
            padding: 80px 0 40px;
        }

        .gtmamk-footer-container {
            max-width: var(--gtmamk-container-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
        }

        .gtmamk-footer-brand {
            flex: 1;
            min-width: 240px;
        }

        .gtmamk-footer-brand-name {
            color: white;
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 24px;
            display: block;
        }

        .gtmamk-footer-links {
            flex: 2;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
            gap: 32px;
            min-width: 0;
        }

        .gtmamk-footer-group h4 {
            color: white;
            margin-bottom: 20px;
            font-size: 16px;
        }

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

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

        .gtmamk-footer-group a {
            color: #8c8c8c;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.3s;
        }

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

        .gtmamk-copyright {
            width: 100%;
            text-align: center;
            margin-top: 64px;
            padding-top: 32px;
            border-top: 1px solid #333;
            font-size: 13px;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .gtmamk-nav-links {
                display: none; /* 简化移动端，实际项目中可配合JS做汉堡菜单 */
            }
            .gtmamk-hero {
                padding-top: 120px;
            }
            .gtmamk-lexicon-item, .gtmamk-lexicon-item:nth-child(even) {
                flex-direction: column;
            }
        }