/* CSS RESET & VARIABLES */
        :root {
            --primary-color: #00c853; /* 鲜绿 */
            --primary-hover: #00e676; /* 亮绿 */
            --primary-dark: #1b5e20; /* 深绿 */
            --text-dark: #263238; /* 深色灰蓝，高对比度 */
            --text-muted: #546e7a;
            --bg-light: #fafafa;
            --bg-white: #ffffff;
            --bg-card: #f1f8e9; /* 淡绿灰背景 */
            --accent-color: #ff9100;
            --border-color: #e0e0e0;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        /* LAYOUT & CONTAINERS */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }

        /* 统一标题 */
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-header h2 {
            font-size: 2rem;
            color: var(--text-dark);
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }

        .section-header h2::after {
            content: '';
            display: block;
            width: 50px;
            height: 4px;
            background-color: var(--primary-color);
            margin: 8px auto 0;
            border-radius: 2px;
        }

        .section-header p {
            color: var(--text-muted);
            font-size: 1.1rem;
        }

        /* BUTTONS */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 8px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
        }

        .btn-primary {
            background-color: var(--primary-color);
            color: var(--bg-white);
        }

        .btn-primary:hover {
            background-color: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(0,200,83,0.3);
        }

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

        .btn-outline:hover {
            background-color: var(--primary-color);
            color: var(--bg-white);
            transform: translateY(-2px);
        }

        /* HEADER & NAVIGATION */
        header {
            position: sticky;
            top: 0;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
        }

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

        .logo-area {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .ai-page-logo {
            height: 45px;
            width: auto;
        }

        .brand-name {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--primary-dark);
        }

        nav {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .nav-menu {
            display: flex;
            list-style: none;
            gap: 20px;
        }

        .nav-menu a {
            text-decoration: none;
            color: var(--text-dark);
            font-weight: 500;
            transition: var(--transition);
            font-size: 0.95rem;
        }

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

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 6px;
            cursor: pointer;
            border: none;
            background: transparent;
        }

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

        /* HERO SECTION (NO IMAGES) */
        .hero-section {
            background: linear-gradient(135deg, #e8f5e9 0%, #ffffff 100%);
            padding: 100px 0 80px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        /* 纯CSS装饰几何图形，科技感 */
        .hero-section::before {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0,200,83,0.1) 0%, transparent 70%);
            top: -50px;
            right: -50px;
            z-index: 1;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            width: 250px;
            height: 250px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0,230,118,0.08) 0%, transparent 70%);
            bottom: -50px;
            left: -50px;
            z-index: 1;
        }

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

        h1.hero-title {
            font-size: 2.8rem;
            line-height: 1.3;
            color: var(--text-dark);
            margin-bottom: 24px;
            font-weight: 800;
        }

        h1.hero-title span {
            color: var(--primary-color);
        }

        .hero-subtitle {
            font-size: 1.25rem;
            color: var(--text-muted);
            margin-bottom: 40px;
            line-height: 1.8;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
            margin-bottom: 50px;
        }

        /* DATA CARDS IN HERO */
        .hero-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 30px;
        }

        .stat-card {
            background-color: var(--bg-white);
            padding: 20px;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.04);
            border-top: 4px solid var(--primary-color);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
        }

        .stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary-dark);
            margin-bottom: 5px;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* ABOUT US */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.8rem;
            color: var(--primary-dark);
            margin-bottom: 20px;
        }

        .about-text p {
            margin-bottom: 15px;
            color: var(--text-dark);
            text-align: justify;
        }

        .about-badge-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 20px;
        }

        .about-badge {
            background-color: var(--bg-card);
            color: var(--primary-dark);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            border: 1px solid rgba(0,200,83,0.15);
        }

        /* SERVICES (CAPABILITIES) & PLATFORMS */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .service-card {
            background-color: var(--bg-white);
            padding: 35px 25px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            position: relative;
        }

        .service-card:hover {
            border-color: var(--primary-color);
            transform: translateY(-8px);
            box-shadow: 0 10px 30px rgba(0,200,83,0.08);
        }

        .service-icon {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 1.3rem;
            margin-bottom: 15px;
            color: var(--text-dark);
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* PLATFORMS INTEGRATION */
        .platform-wrap {
            margin-top: 60px;
            background-color: var(--bg-white);
            padding: 40px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
        }

        .platform-wrap h3 {
            text-align: center;
            margin-bottom: 30px;
            color: var(--text-dark);
        }

        .platform-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
        }

        .platform-tag {
            background-color: var(--bg-light);
            border: 1px solid var(--border-color);
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-dark);
            transition: var(--transition);
        }

        .platform-tag:hover {
            background-color: var(--bg-card);
            border-color: var(--primary-color);
            color: var(--primary-dark);
        }

        /* SOLUTIONS & PROCESS */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .solution-card {
            background-color: var(--bg-card);
            padding: 30px;
            border-radius: 12px;
            border-left: 5px solid var(--primary-color);
        }

        .solution-card h3 {
            margin-bottom: 15px;
            color: var(--primary-dark);
        }

        /* STEPS & TIMELINE */
        .steps-container {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
            margin-top: 40px;
        }

        .step-item {
            text-align: center;
            position: relative;
        }

        .step-num {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: var(--primary-color);
            color: var(--bg-white);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            font-weight: bold;
            margin: 0 auto 20px;
            box-shadow: 0 4px 10px rgba(0,200,83,0.3);
        }

        .step-item h3 {
            margin-bottom: 10px;
            font-size: 1.1rem;
        }

        .step-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* CASES & IMAGES SECTION */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .case-card {
            background-color: var(--bg-white);
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 24px rgba(0,0,0,0.06);
        }

        .case-img-container {
            width: 100%;
            aspect-ratio: 16/10;
            overflow: hidden;
            background-color: #eee;
        }

        .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-body {
            padding: 20px;
        }

        .case-tag {
            display: inline-block;
            background-color: var(--bg-card);
            color: var(--primary-dark);
            font-size: 0.75rem;
            padding: 3px 8px;
            border-radius: 4px;
            margin-bottom: 10px;
            font-weight: 600;
        }

        .case-body h3 {
            font-size: 1.1rem;
            margin-bottom: 10px;
        }

        .case-body p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .case-banner-wide {
            grid-column: span 3;
            margin-top: 30px;
            border-radius: 12px;
            overflow: hidden;
            display: grid;
            grid-template-columns: 1fr 1fr;
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
        }

        .case-banner-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 250px;
        }

        .case-banner-info {
            padding: 40px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        /* COMPARE & TOKEN */
        .compare-wrap {
            background-color: var(--bg-white);
            border-radius: 16px;
            padding: 40px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 20px rgba(0,0,0,0.02);
            overflow-x: auto;
        }

        .badge-score {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background-color: var(--bg-card);
            padding: 10px 20px;
            border-radius: 30px;
            margin-bottom: 30px;
            border: 1px solid rgba(0,200,83,0.3);
        }

        .badge-score .stars {
            color: var(--accent-color);
            font-weight: bold;
        }

        .badge-score .points {
            color: var(--primary-dark);
            font-weight: 800;
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 600px;
        }

        .compare-table th, .compare-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-color);
        }

        .compare-table th {
            background-color: var(--bg-light);
            font-weight: bold;
            color: var(--text-dark);
        }

        .compare-table tbody tr:hover {
            background-color: var(--bg-card);
        }

        .compare-table td strong {
            color: var(--primary-dark);
        }

        /* TRAINING */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            margin-top: 30px;
        }

        .train-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-top: 4px solid var(--primary-color);
            border-radius: 8px;
            padding: 24px;
            transition: var(--transition);
        }

        .train-card:hover {
            box-shadow: 0 6px 18px rgba(0,0,0,0.05);
            transform: translateY(-3px);
        }

        .train-card h3 {
            font-size: 1.1rem;
            color: var(--text-dark);
            margin-bottom: 12px;
        }

        .train-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* FAQ ACCORDION */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-question {
            padding: 20px 24px;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-question::after {
            content: '+';
            font-size: 1.5rem;
            color: var(--primary-color);
            transition: var(--transition);
        }

        .faq-item.active .faq-question::after {
            content: '−';
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background-color: var(--bg-light);
        }

        .faq-answer-content {
            padding: 20px 24px;
            font-size: 0.95rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
        }

        /* REVIEWS */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .review-card {
            background-color: var(--bg-white);
            padding: 30px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 15px rgba(0,0,0,0.02);
        }

        .review-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 15px;
        }

        .review-avatar {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background-color: var(--bg-card);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            color: var(--primary-dark);
        }

        .review-info h4 {
            font-size: 1rem;
            margin-bottom: 2px;
        }

        .review-info span {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .review-content {
            font-size: 0.9rem;
            color: var(--text-dark);
            text-align: justify;
        }

        /* ARTICLES & DICTIONARY */
        .news-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .news-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .news-item {
            background-color: var(--bg-white);
            padding: 18px 24px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .news-item:hover {
            border-color: var(--primary-color);
            transform: translateX(5px);
        }

        .news-item a {
            text-decoration: none;
            color: var(--text-dark);
            font-weight: 600;
            font-size: 0.95rem;
            display: block;
            margin-bottom: 8px;
        }

        .news-item a:hover {
            color: var(--primary-color);
        }

        .news-item span {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .dict-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
        }

        .dict-card {
            background-color: var(--bg-card);
            padding: 20px;
            border-radius: 8px;
        }

        .dict-card h4 {
            color: var(--primary-dark);
            margin-bottom: 8px;
        }

        .dict-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* CONTACT & AGENT & FORM */
        .contact-layout {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 50px;
        }

        .contact-info-area {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }

        .info-block {
            background-color: var(--bg-white);
            padding: 25px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

        .info-block h3 {
            margin-bottom: 15px;
            color: var(--primary-dark);
        }

        .info-block p {
            margin-bottom: 10px;
            font-size: 0.95rem;
        }

        .qr-wrap {
            display: flex;
            gap: 20px;
            align-items: center;
            margin-top: 15px;
        }

        .qr-box {
            text-align: center;
        }

        .qr-box img {
            width: 100px;
            height: 100px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            margin-bottom: 8px;
        }

        .qr-box p {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        .form-area {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 40px;
            box-shadow: 0 4px 25px rgba(0,0,0,0.03);
        }

        .form-area h3 {
            margin-bottom: 25px;
            color: var(--text-dark);
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            font-size: 0.9rem;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 0.95rem;
            transition: var(--transition);
            color: var(--text-dark);
            background-color: var(--bg-light);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary-color);
            background-color: var(--bg-white);
            box-shadow: 0 0 0 3px rgba(0,200,83,0.1);
        }

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

        /* AGENT SECTION IN LAYOUT */
        .agent-card {
            background-color: var(--primary-dark);
            color: var(--bg-white);
            padding: 30px;
            border-radius: 12px;
            margin-top: 30px;
        }

        .agent-card h3 {
            color: var(--primary-hover);
            margin-bottom: 10px;
        }

        .agent-card p {
            font-size: 0.9rem;
            opacity: 0.9;
        }

        /* FLOAT CUSTOMER SERVICE */
        .float-service {
            position: fixed;
            right: 20px;
            bottom: 80px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            background-color: var(--primary-color);
            color: var(--bg-white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(0,200,83,0.4);
            transition: var(--transition);
            position: relative;
        }

        .float-btn:hover {
            background-color: var(--primary-hover);
            transform: scale(1.05);
        }

        .float-btn svg {
            width: 24px;
            height: 24px;
            fill: currentColor;
        }

        .float-qr-box {
            position: absolute;
            right: 60px;
            bottom: 0;
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 15px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
            display: none;
            text-align: center;
            width: 140px;
        }

        .float-qr-box img {
            width: 110px;
            height: 110px;
            margin-bottom: 5px;
        }

        .float-qr-box span {
            font-size: 0.75rem;
            color: var(--text-dark);
            display: block;
        }

        .float-btn:hover .float-qr-box {
            display: block;
        }

        .back-to-top {
            display: none;
        }

        /* FOOTER & LINKS */
        footer {
            background-color: #1a2327;
            color: #b0bec5;
            padding: 60px 0 30px;
            font-size: 0.9rem;
            border-top: 4px solid var(--primary-color);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand h4 {
            color: var(--bg-white);
            font-size: 1.2rem;
            margin-bottom: 20px;
        }

        .footer-brand p {
            margin-bottom: 15px;
            line-height: 1.7;
        }

        .footer-links h5 {
            color: var(--bg-white);
            font-size: 1rem;
            margin-bottom: 20px;
        }

        .footer-links ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            color: #b0bec5;
            text-decoration: none;
            transition: var(--transition);
        }

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

        .friend-links-area {
            border-top: 1px solid #37474f;
            padding-top: 25px;
            margin-bottom: 25px;
        }

        .friend-links-area h6 {
            color: var(--bg-white);
            margin-bottom: 12px;
            font-size: 0.95rem;
        }

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

        .friend-links-wrap a {
            color: #8a9a9f;
            text-decoration: none;
            transition: var(--transition);
            font-size: 0.85rem;
        }

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

        .footer-bottom {
            border-top: 1px solid #37474f;
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
            font-size: 0.8rem;
        }

        /* RESPONSIVE DESIGN */
        @media (max-width: 1024px) {
            h1.hero-title { font-size: 2.3rem; }
            .hero-stats { grid-template-columns: repeat(2, 1fr); }
            .about-grid, .contact-layout { grid-template-columns: 1fr; gap: 40px; }
            .solutions-grid, .cases-grid, .reviews-grid { grid-template-columns: repeat(2, 1fr); }
            .case-banner-wide { grid-column: span 2; }
        }

        @media (max-width: 768px) {
            .menu-toggle { display: flex; }
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--bg-white);
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
            }
            .nav-menu.active { display: flex; }
            .nav-actions { display: none; }
            .steps-container { grid-template-columns: repeat(2, 1fr); gap: 30px; }
            .solutions-grid, .cases-grid, .reviews-grid, .news-grid, .dict-grid { grid-template-columns: 1fr; }
            .case-banner-wide { grid-column: span 1; grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 30px; }
            .hero-stats { grid-template-columns: 1fr; }
        }