:root {
            --gtmamk-primary: #ff6600;
            --gtmamk-primary-dark: #e65c00;
            --gtmamk-secondary: #2b2b2b;
            --gtmamk-bg: #ffffff;
            --gtmamk-bg-soft: #f8f9fa;
            --gtmamk-text: #1d1d1f;
            --gtmamk-text-light: #86868b;
            --gtmamk-accent: #0071e3;
            --gtmamk-spacing-unit: 8px;
            --gtmamk-container-width: 1100px;
        }

        * {
            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(--gtmamk-bg);
            color: var(--gtmamk-text);
            line-height: 1.6;
            word-break: break-word;
            overflow-x: hidden;
        }

        /* Navigation */
        .gtmamk-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);
        }

        .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: 64px;
        }

        .gtmamk-logo {
            flex: 0 0 auto;
            height: 32px;
            min-width: 0;
        }

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

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

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

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

        /* Hero Section - Diagonal Layout */
        .gtmamk-hero {
            padding: 160px 24px 96px;
            background: linear-gradient(135deg, #fff 50%, #fffbf5 50%);
            overflow: hidden;
        }

        .gtmamk-hero-inner {
            max-width: var(--gtmamk-container-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
        }

        .gtmamk-hero-content {
            flex: 1 1 500px;
            min-width: 0;
        }

        .gtmamk-hero-tag {
            display: inline-block;
            padding: 4px 12px;
            background: rgba(255, 102, 0, 0.1);
            color: var(--gtmamk-primary);
            border-radius: 20px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
        }

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

        .gtmamk-hero-subtitle {
            font-size: clamp(1.1rem, 1vw + 0.5rem, 1.4rem);
            color: var(--gtmamk-text-light);
            margin-bottom: 40px;
            max-width: 600px;
        }

        .gtmamk-btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .gtmamk-btn {
            display: inline-block;
            padding: 16px 32px;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
            text-align: center;
        }

        .gtmamk-btn-primary {
            background: var(--gtmamk-primary);
            color: white;
            box-shadow: 0 10px 20px rgba(255, 102, 0, 0.2);
        }

        .gtmamk-btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 15px 30px rgba(255, 102, 0, 0.3);
        }

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

        .gtmamk-btn-outline:hover {
            background: var(--gtmamk-text);
            color: white;
        }

        /* Comparison Grid */
        .gtmamk-compare-section {
            padding: 96px 24px;
            background-color: var(--gtmamk-bg);
        }

        .gtmamk-section-header {
            max-width: 800px;
            margin: 0 auto 64px;
            text-align: center;
        }

        .gtmamk-section-title {
            font-size: clamp(2rem, 3vw, 2.5rem);
            margin-bottom: 16px;
        }

        .gtmamk-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
            max-width: var(--gtmamk-container-width);
            margin: 0 auto;
        }

        .gtmamk-card {
            background: var(--gtmamk-bg-soft);
            padding: 40px;
            border-radius: 24px;
            transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
            position: relative;
            overflow: hidden;
            min-width: 0;
        }

        .gtmamk-card:hover {
            transform: translateY(-10px);
            background: #fff;
            box-shadow: 0 40px 80px rgba(0,0,0,0.05);
        }

        .gtmamk-card-icon {
            width: 48px;
            height: 48px;
            background: var(--gtmamk-primary);
            border-radius: 12px;
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: bold;
        }

        .gtmamk-card h3 {
            font-size: 24px;
            margin-bottom: 16px;
        }

        .gtmamk-card p {
            color: var(--gtmamk-text-light);
            margin-bottom: 24px;
        }

        .gtmamk-lexicon-list {
            list-style: none;
        }

        .gtmamk-lexicon-item {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 8px;
            font-size: 14px;
            color: var(--gtmamk-text);
        }

        .gtmamk-lexicon-item::before {
            content: "✓";
            color: #34c759;
            font-weight: bold;
        }

        /* Industry Specific Section */
        .gtmamk-industry-showcase {
            padding: 96px 24px;
            background: var(--gtmamk-secondary);
            color: white;
            border-radius: 40px;
            margin: 0 24px;
        }

        .gtmamk-industry-inner {
            max-width: var(--gtmamk-container-width);
            margin: 0 auto;
        }

        .gtmamk-industry-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            margin-top: 64px;
        }

        .gtmamk-industry-item {
            flex: 1 1 300px;
            min-width: 0;
            border-left: 1px solid rgba(255,255,255,0.2);
            padding-left: 24px;
        }

        .gtmamk-industry-label {
            font-size: 12px;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--gtmamk-primary);
            margin-bottom: 16px;
            display: block;
        }

        .gtmamk-industry-name {
            font-size: 28px;
            margin-bottom: 16px;
        }

        .gtmamk-sample-box {
            background: rgba(255,255,255,0.05);
            padding: 16px;
            border-radius: 12px;
            font-family: monospace;
            font-size: 14px;
            color: #a1a1a6;
        }

        /* Dynamic Content Section */
        .gtmamk-articles {
            padding: 96px 24px;
            max-width: var(--gtmamk-container-width);
            margin: 0 auto;
        }

        .gtmamk-article-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
            margin-top: 40px;
        }

        .gtmamk-article-item {
            padding: 24px;
            border: 1px solid #eee;
            border-radius: 16px;
            text-decoration: none;
            color: inherit;
            transition: border-color 0.3s;
        }

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

        /* Footer */
        .gtmamk-footer {
            padding: 80px 24px 40px;
            background: var(--gtmamk-bg-soft);
            border-top: 1px solid #eee;
        }

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

        .gtmamk-footer-brand {
            flex: 1 1 300px;
            min-width: 0;
        }

        .gtmamk-footer-brand h2 {
            font-size: 24px;
            margin-bottom: 16px;
            color: var(--gtmamk-primary);
        }

        .gtmamk-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
            flex: 2 1 600px;
            min-width: 0;
        }

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

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

        .gtmamk-copyright {
            max-width: var(--gtmamk-container-width);
            margin: 40px auto 0;
            padding-top: 24px;
            border-top: 1px solid #ddd;
            font-size: 12px;
            color: var(--gtmamk-text-light);
            text-align: center;
        }

        /* Mobile Adjustments */
        @media (max-width: 768px) {
            .gtmamk-nav-links {
                display: none; /* Hide desktop nav on mobile for brevity or use hamburger */
            }
            .gtmamk-hero {
                padding-top: 120px;
                background: #fff;
            }
            .gtmamk-hero-title {
                font-size: 2.5rem;
            }
            .gtmamk-industry-showcase {
                margin: 0 16px;
                padding: 48px 20px;
            }
            .gtmamk-grid {
                grid-template-columns: 1fr;
            }
        }