/* CSS Reset & Variables */
        :root {
            --primary: #10B981;
            --primary-hover: #059669;
            --primary-light: #E6FBF3;
            --secondary: #06B6D4;
            --dark: #111827;
            --text-main: #374151;
            --text-muted: #6B7280;
            --light-bg: #F9FAFB;
            --border-color: #E5E7EB;
            --container-width: 1200px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--light-bg);
            color: var(--text-main);
        }

        body {
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* Common Layout Grid */
        .container {
            width: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        section {
            padding: 80px 0;
            position: relative;
        }

        /* Section Title Style */
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-tag {
            display: inline-block;
            background-color: var(--primary-light);
            color: var(--primary-hover);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 12px;
            text-transform: uppercase;
        }

        .section-title {
            font-size: 32px;
            color: var(--dark);
            font-weight: 800;
            margin-bottom: 16px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 700px;
            margin: 0 auto;
        }

        /* Header & Navigation */
        .ai-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .ai-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }

        .ai-logo-container {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .ai-page-logo {
            height: 40px;
            width: auto;
        }

        .ai-menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            border: none;
            background: transparent;
        }

        .ai-menu-toggle span {
            width: 25px;
            height: 3px;
            background-color: var(--dark);
            transition: var(--transition);
        }

        .ai-nav-links {
            display: flex;
            align-items: center;
            gap: 24px;
            list-style: none;
        }

        .ai-nav-links a {
            text-decoration: none;
            color: var(--text-main);
            font-weight: 500;
            font-size: 15px;
            transition: var(--transition);
        }

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

        .ai-nav-links .ai-page-home-link {
            color: var(--primary);
            font-weight: 700;
        }

        .nav-btn {
            background-color: var(--primary);
            color: #fff !important;
            padding: 8px 20px;
            border-radius: 6px;
            transition: var(--transition);
        }

        .nav-btn:hover {
            background-color: var(--primary-hover);
        }

        /* Hero Section (No Image) */
        .hero-section {
            padding: 160px 0 100px;
            background: linear-gradient(135deg, #F0FDF4 0%, #ECFDF5 50%, #F9FAFB 100%);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: radial-gradient(var(--primary) 1px, transparent 1px);
            background-size: 30px 30px;
            opacity: 0.15;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 900px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            background: rgba(16, 185, 129, 0.1);
            border: 1px solid rgba(16, 185, 129, 0.2);
            color: var(--primary-hover);
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .hero-title {
            font-size: 46px;
            line-height: 1.25;
            color: var(--dark);
            font-weight: 900;
            margin-bottom: 24px;
        }

        .hero-title span {
            color: var(--primary);
            background: linear-gradient(to right, #059669, #10B981);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-subtitle {
            font-size: 18px;
            color: var(--text-muted);
            margin-bottom: 40px;
            line-height: 1.8;
        }

        .hero-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .btn-primary {
            display: inline-block;
            background-color: var(--primary);
            color: #fff;
            padding: 14px 32px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 16px;
            text-decoration: none;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 14px rgba(16, 185, 129, 0.4);
            transition: var(--transition);
        }

        .btn-primary:hover {
            background-color: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(16, 185, 129, 0.5);
        }

        .btn-secondary {
            display: inline-block;
            background-color: #fff;
            color: var(--dark);
            padding: 14px 32px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 16px;
            text-decoration: none;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .btn-secondary:hover {
            background-color: var(--light-bg);
            border-color: var(--text-muted);
            transform: translateY(-2px);
        }

        /* Stats Cards (Data Indicator) */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 60px;
        }

        .stat-card {
            background: #fff;
            border: 1px solid var(--border-color);
            padding: 24px;
            border-radius: 12px;
            text-align: center;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.02);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(16, 185, 129, 0.08);
            border-color: rgba(16, 185, 129, 0.3);
        }

        .stat-number {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary-hover);
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* About Us Section */
        .about-section {
            background-color: #fff;
        }

        .about-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 24px;
            color: var(--dark);
            margin-bottom: 20px;
        }

        .about-text p {
            margin-bottom: 20px;
            color: var(--text-main);
            font-size: 16px;
            line-height: 1.8;
        }

        .about-list {
            list-style: none;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-top: 30px;
        }

        .about-list-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
            font-weight: 500;
        }

        .about-list-item svg {
            color: var(--primary);
            flex-shrink: 0;
        }

        .about-badge-card {
            background: linear-gradient(135deg, #10B981 0%, #059669 100%);
            color: white;
            padding: 40px;
            border-radius: 20px;
            text-align: center;
            box-shadow: 0 15px 30px rgba(16, 185, 129, 0.2);
        }

        .about-badge-title {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 15px;
        }

        .about-badge-desc {
            font-size: 14px;
            opacity: 0.9;
            margin-bottom: 25px;
        }

        /* Platform capabilities (Service & Models) */
        .platform-section {
            background-color: var(--light-bg);
        }

        .model-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            max-width: 1000px;
            margin: 30px auto 0;
        }

        .model-tag {
            background: #fff;
            border: 1px solid var(--border-color);
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 500;
            color: var(--dark);
            box-shadow: 0 2px 4px rgba(0,0,0,0.02);
            transition: var(--transition);
        }

        .model-tag:hover {
            background-color: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary-hover);
        }

        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-top: 50px;
        }

        .service-card {
            background: #fff;
            padding: 35px 30px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 6px rgba(0,0,0,0.01);
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.05);
            border-color: rgba(16, 185, 129, 0.2);
        }

        .service-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 60px;
            height: 60px;
            border-radius: 12px;
            background-color: var(--primary-light);
            color: var(--primary);
            margin-bottom: 24px;
        }

        .service-card-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 14px;
        }

        .service-card-desc {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* AIGC Production / Scene Grid */
        .scene-section {
            background-color: #fff;
        }

        .scene-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
            margin-top: 50px;
        }

        .scene-card {
            display: flex;
            gap: 20px;
            background: var(--light-bg);
            border: 1px solid var(--border-color);
            padding: 30px;
            border-radius: 16px;
            transition: var(--transition);
        }

        .scene-card:hover {
            box-shadow: 0 10px 20px rgba(0,0,0,0.03);
            border-color: var(--primary);
        }

        .scene-number {
            font-size: 32px;
            font-weight: 800;
            color: rgba(16, 185, 129, 0.2);
            line-height: 1;
        }

        .scene-info h4 {
            font-size: 18px;
            color: var(--dark);
            margin-bottom: 8px;
            font-weight: 700;
        }

        .scene-info p {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* Solutions */
        .solutions-section {
            background: linear-gradient(180deg, #fff 0%, #F3FBF7 100%);
        }

        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 50px;
        }

        .solution-card {
            background: #fff;
            border: 1px solid var(--border-color);
            padding: 30px 24px;
            border-radius: 12px;
            text-align: center;
            transition: var(--transition);
        }

        .solution-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(16, 185, 129, 0.05);
            border-color: var(--primary);
        }

        .solution-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 12px;
        }

        .solution-desc {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* Standardization Flow & Timeline */
        .flow-section {
            background-color: #fff;
        }

        .timeline {
            position: relative;
            max-width: 900px;
            margin: 60px auto 0;
            padding: 20px 0;
        }

        .timeline::before {
            content: '';
            position: absolute;
            top: 0;
            bottom: 0;
            left: 50%;
            width: 2px;
            background: var(--border-color);
            transform: translateX(-50%);
        }

        .timeline-item {
            position: relative;
            width: 50%;
            padding: 20px 40px;
            box-sizing: border-box;
        }

        .timeline-item:nth-child(odd) {
            left: 0;
            text-align: right;
        }

        .timeline-item:nth-child(even) {
            left: 50%;
            text-align: left;
        }

        .timeline-badge {
            position: absolute;
            top: 25px;
            width: 20px;
            height: 20px;
            background: var(--primary);
            border: 4px solid #fff;
            border-radius: 50%;
            z-index: 10;
        }

        .timeline-item:nth-child(odd) .timeline-badge {
            right: -10px;
        }

        .timeline-item:nth-child(even) .timeline-badge {
            left: -10px;
        }

        .timeline-card {
            background: var(--light-bg);
            border: 1px solid var(--border-color);
            padding: 24px;
            border-radius: 12px;
            transition: var(--transition);
        }

        .timeline-card:hover {
            box-shadow: 0 8px 16px rgba(0,0,0,0.03);
            border-color: var(--primary);
        }

        .timeline-step {
            font-size: 13px;
            color: var(--primary-hover);
            font-weight: 700;
            margin-bottom: 6px;
        }

        .timeline-title {
            font-size: 18px;
            color: var(--dark);
            margin-bottom: 8px;
            font-weight: 700;
        }

        .timeline-desc {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* Technical Standards */
        .tech-section {
            background-color: var(--light-bg);
        }

        .tech-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-top: 50px;
        }

        .tech-card {
            background: #fff;
            border: 1px solid var(--border-color);
            padding: 30px;
            border-radius: 12px;
            transition: var(--transition);
        }

        .tech-card:hover {
            border-color: var(--primary);
            box-shadow: 0 8px 20px rgba(0,0,0,0.02);
        }

        .tech-header {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 20px;
        }

        .tech-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background-color: var(--primary);
        }

        .tech-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
        }

        .tech-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* Case Studies (with prescribed images) */
        .case-section {
            background-color: #fff;
        }

        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-top: 50px;
        }

        .case-card {
            background: var(--light-bg);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 24px rgba(0,0,0,0.05);
            border-color: var(--primary);
        }

        .case-img-container {
            width: 100%;
            height: 220px;
            overflow: hidden;
            position: relative;
            background-color: #eaeaea;
        }

        .case-img-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .case-card:hover .case-img-container img {
            transform: scale(1.05);
        }

        .case-content {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex-grow: 1;
        }

        .case-tag {
            font-size: 12px;
            font-weight: 600;
            color: var(--primary-hover);
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        .case-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .case-desc {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
            line-height: 1.6;
        }

        /* Comparison Board */
        .compare-section {
            background-color: var(--light-bg);
        }

        .compare-table-wrapper {
            width: 100%;
            overflow-x: auto;
            margin-top: 50px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 6px rgba(0,0,0,0.01);
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            background: #fff;
            text-align: left;
            min-width: 800px;
        }

        .compare-table th, .compare-table td {
            padding: 18px 24px;
            border-bottom: 1px solid var(--border-color);
            font-size: 15px;
        }

        .compare-table th {
            background-color: #F9FAFB;
            color: var(--dark);
            font-weight: 700;
        }

        .compare-table tr:last-child td {
            border-bottom: none;
        }

        .compare-table tr.highlight-row {
            background-color: var(--primary-light);
        }

        .compare-table td.highlight-cell {
            font-weight: 700;
            color: var(--primary-hover);
        }

        .rating-box {
            background: #fff;
            border: 1px solid var(--border-color);
            padding: 30px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 40px;
            flex-wrap: wrap;
            gap: 20px;
        }

        .rating-left {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .rating-stars {
            color: #F59E0B;
            font-size: 24px;
        }

        .rating-number {
            font-size: 40px;
            font-weight: 900;
            color: var(--dark);
            display: flex;
            align-items: baseline;
        }

        .rating-number span {
            font-size: 18px;
            color: var(--text-muted);
            font-weight: 400;
        }

        .rating-text {
            max-width: 500px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* Token Pricing */
        .token-section {
            background-color: #fff;
        }

        .token-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-top: 50px;
        }

        .token-card {
            background: #fff;
            border: 2px solid var(--border-color);
            border-radius: 16px;
            padding: 35px 30px;
            position: relative;
            overflow: hidden;
            transition: var(--transition);
        }

        .token-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.04);
        }

        .token-card.popular {
            border-color: var(--primary);
        }

        .token-card.popular::before {
            content: '首选推荐';
            position: absolute;
            top: 15px;
            right: -30px;
            background: var(--primary);
            color: white;
            padding: 4px 30px;
            font-size: 11px;
            font-weight: bold;
            transform: rotate(45deg);
        }

        .token-model-name {
            font-size: 22px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 15px;
        }

        .token-price {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary-hover);
            margin-bottom: 20px;
        }

        .token-price span {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 400;
        }

        .token-features {
            list-style: none;
            margin-bottom: 30px;
        }

        .token-features li {
            font-size: 14px;
            color: var(--text-main);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .token-features svg {
            color: var(--primary);
        }

        /* Training & Certification */
        .training-section {
            background-color: var(--light-bg);
        }

        .training-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
            margin-top: 50px;
        }

        .training-card {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px 20px;
            text-align: center;
            transition: var(--transition);
        }

        .training-card:hover {
            border-color: var(--primary);
            transform: translateY(-5px);
            box-shadow: 0 8px 16px rgba(16, 185, 129, 0.05);
        }

        .training-icon {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: var(--primary-light);
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            font-weight: 700;
        }

        .training-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .training-desc {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* Support & FAQ */
        .faq-section {
            background-color: #fff;
        }

        .faq-wrapper {
            max-width: 800px;
            margin: 50px auto 0;
        }

        .faq-item {
            border-bottom: 1px solid var(--border-color);
            padding: 20px 0;
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 16px;
            font-weight: 600;
            color: var(--dark);
            cursor: pointer;
            user-select: none;
            transition: var(--transition);
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            color: var(--text-main);
            font-size: 14px;
            line-height: 1.8;
        }

        .faq-answer p {
            padding-top: 12px;
        }

        .faq-icon {
            font-size: 20px;
            transition: transform 0.3s;
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            color: var(--primary);
        }

        /* Self-Troubleshooting & Glossary */
        .help-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            margin-top: 50px;
        }

        .help-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .help-list {
            list-style: none;
        }

        .help-list li {
            border-bottom: 1px solid var(--border-color);
            padding: 12px 0;
            font-size: 14px;
        }

        .help-list span {
            font-weight: 600;
            color: var(--primary-hover);
            margin-right: 10px;
        }

        /* Testimonials (User reviews) */
        .reviews-section {
            background-color: var(--light-bg);
        }

        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-top: 50px;
        }

        .review-card {
            background: #fff;
            border: 1px solid var(--border-color);
            padding: 30px;
            border-radius: 12px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.01);
            position: relative;
        }

        .review-text {
            font-size: 14px;
            color: var(--text-main);
            line-height: 1.7;
            margin-bottom: 24px;
            font-style: italic;
        }

        .review-user {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid var(--border-color);
            padding-top: 16px;
        }

        .review-user-info h5 {
            font-size: 15px;
            font-weight: 700;
            color: var(--dark);
        }

        .review-user-info span {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* Info Articles */
        .info-section {
            background-color: #fff;
        }

        .articles-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            margin-top: 40px;
        }

        .article-item {
            background: var(--light-bg);
            border: 1px solid var(--border-color);
            padding: 20px;
            border-radius: 8px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: var(--transition);
        }

        .article-item:hover {
            border-color: var(--primary);
            background-color: #fff;
        }

        .article-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 12px;
            text-decoration: none;
            transition: var(--transition);
        }

        .article-title:hover {
            color: var(--primary-hover);
        }

        .article-meta {
            display: flex;
            justify-content: space-between;
            font-size: 12px;
            color: var(--text-muted);
        }

        /* Contact & Forms (Submit matches) */
        .contact-section {
            background-color: var(--light-bg);
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
            align-items: flex-start;
        }

        .form-card {
            background: #fff;
            border: 1px solid var(--border-color);
            padding: 40px;
            border-radius: 16px;
            box-shadow: 0 4px 10px rgba(0,0,0,0.01);
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .form-input, .form-select, .form-textarea {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 14px;
            color: var(--dark);
            transition: var(--transition);
            background-color: var(--light-bg);
        }

        .form-input:focus, .form-select:focus, .form-textarea:focus {
            outline: none;
            border-color: var(--primary);
            background-color: #fff;
            box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
        }

        .form-textarea {
            height: 120px;
            resize: vertical;
        }

        .contact-info-card {
            background: #fff;
            border: 1px solid var(--border-color);
            padding: 40px;
            border-radius: 16px;
            height: 100%;
        }

        .contact-method {
            margin-bottom: 30px;
        }

        .contact-method-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .contact-method-detail {
            font-size: 14px;
            color: var(--text-main);
        }

        .contact-qr {
            margin-top: 20px;
            width: 120px;
            height: 120px;
            border: 1px solid var(--border-color);
            padding: 6px;
            border-radius: 8px;
            background-color: #fff;
        }

        .contact-qr img {
            width: 100%;
            height: 100%;
            object-fit: contain;
        }

        /* Footer */
        .ai-footer {
            background-color: #111827;
            color: #9CA3AF;
            padding: 60px 0 30px;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand h4 {
            color: #FFF;
            font-size: 20px;
            margin-bottom: 15px;
        }

        .footer-brand p {
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .footer-links-title {
            color: #FFF;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 15px;
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: #9CA3AF;
            text-decoration: none;
            transition: var(--transition);
        }

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

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 15px;
        }

        .friend-links a {
            color: #9CA3AF;
            text-decoration: none;
            background-color: #1F2937;
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 12px;
            transition: var(--transition);
        }

        .friend-links a:hover {
            color: #fff;
            background-color: var(--primary-hover);
        }

        .footer-bottom {
            border-top: 1px solid #1F2937;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        /* Sticky Service Widget */
        .sticky-widget {
            position: fixed;
            right: 20px;
            bottom: 40px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .widget-item {
            width: 50px;
            height: 50px;
            background-color: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 4px 12px rgba(0,0,0,0.15);
            transition: var(--transition);
            text-decoration: none;
            position: relative;
        }

        .widget-item:hover {
            background-color: var(--primary-hover);
            transform: scale(1.1);
        }

        .widget-popover {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: #fff;
            border: 1px solid var(--border-color);
            padding: 15px;
            border-radius: 8px;
            box-shadow: 0 8px 24px rgba(0,0,0,0.15);
            display: none;
            width: 150px;
            text-align: center;
        }

        .widget-popover img {
            width: 100%;
            height: auto;
            margin-bottom: 8px;
        }

        .widget-popover span {
            font-size: 12px;
            color: var(--dark);
            font-weight: 600;
        }

        .widget-item:hover .widget-popover {
            display: block;
        }

        /* Responsive Styles */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-grid, .case-grid, .token-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .training-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .solutions-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .ai-menu-toggle {
                display: flex;
            }

            .ai-nav-links {
                position: fixed;
                top: 70px;
                left: -100%;
                width: 100%;
                height: calc(100vh - 70px);
                background-color: #fff;
                flex-direction: column;
                padding: 40px 20px;
                gap: 20px;
                transition: var(--transition);
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
            }

            .ai-nav-links.active {
                left: 0;
            }

            .hero-title {
                font-size: 32px;
            }

            .about-grid, .contact-grid, .help-grid {
                grid-template-columns: 1fr;
            }

            .timeline::before {
                left: 20px;
            }

            .timeline-item {
                width: 100%;
                padding-left: 50px;
                padding-right: 0;
                text-align: left !important;
            }

            .timeline-item:nth-child(even) {
                left: 0;
            }

            .timeline-badge {
                left: 10px !important;
            }

            .service-grid, .case-grid, .token-grid, .reviews-grid, .training-grid, .solutions-grid, .articles-list {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
            }
        }