:root {
            --primary: #10B981;
            --primary-hover: #059669;
            --accent: #00E676;
            --accent-bg: #E6FDF4;
            --dark: #0F172A;
            --dark-light: #1E293B;
            --light: #F8FAFC;
            --white: #FFFFFF;
            --border: #E2E8F0;
            --text-main: #334155;
            --text-muted: #64748B;
            --shadow: 0 10px 30px -10px rgba(16, 185, 129, 0.1);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

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

        /* Typography & Headings */
        h1, h2, h3, h4 {
            color: var(--dark);
            font-weight: 700;
        }

        h2 {
            font-size: 2rem;
            text-align: center;
            margin-bottom: 12px;
            position: relative;
        }

        .section-desc {
            text-align: center;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto 48px;
            font-size: 1.05rem;
        }

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

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

        .btn-primary:hover {
            background-color: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(16, 185, 129, 0.2);
        }

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

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

        /* Navigation */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
            z-index: 1000;
            transition: var(--transition);
        }

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

        .nav-logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
        }

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

        .brand-name {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.5px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 20px;
            list-style: none;
        }

        .nav-links a {
            text-decoration: none;
            color: var(--text-main);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            padding: 8px 12px;
            border-radius: 6px;
        }

        .nav-links a:hover {
            color: var(--primary);
            background-color: var(--accent-bg);
        }

        .nav-btns {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .mobile-nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
        }

        .mobile-nav-toggle span {
            display: block;
            width: 25px;
            height: 3px;
            background-color: var(--dark);
            border-radius: 3px;
            transition: var(--transition);
        }

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

        .hero-section::before {
            content: '';
            position: absolute;
            top: -10%;
            right: -10%;
            width: 40%;
            height: 60%;
            background: radial-gradient(circle, rgba(16, 185, 129, 0.08) 0%, transparent 70%);
            z-index: 1;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background-color: var(--accent-bg);
            color: var(--primary);
            padding: 8px 16px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 24px;
            border: 1px solid rgba(16, 185, 129, 0.2);
        }

        .hero-title {
            font-size: 3rem;
            line-height: 1.25;
            margin-bottom: 24px;
            color: var(--dark);
        }

        .hero-title span {
            color: var(--primary);
            background: linear-gradient(to right, #10B981, #00C853);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-lead {
            font-size: 1.25rem;
            color: var(--text-muted);
            margin-bottom: 40px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-buttons {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* Section Layouts */
        section {
            padding: 90px 0;
            border-bottom: 1px solid var(--border);
            background-color: var(--white);
        }

        section:nth-child(even) {
            background-color: var(--light);
        }

        /* Data Cards (About Us Section) */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 48px;
        }

        .stat-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 30px 20px;
            text-align: center;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
        }

        .stat-num {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 0.95rem;
            color: var(--text-muted);
        }

        /* Grid layouts */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 40px;
            align-items: center;
        }

        .card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 32px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .card:hover {
            transform: translateY(-6px);
            box-shadow: 0 20px 40px -15px rgba(0,0,0,0.05), 0 0 0 1px var(--primary);
        }

        .card-icon {
            width: 48px;
            height: 48px;
            background-color: var(--accent-bg);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.5rem;
            margin-bottom: 20px;
        }

        .card h3 {
            margin-bottom: 12px;
            font-size: 1.25rem;
        }

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

        /* Model Badge Grid (All platforms AIGC) */
        .badge-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            max-width: 1000px;
            margin: 0 auto;
        }

        .model-badge {
            background: var(--white);
            border: 1px solid var(--border);
            padding: 10px 20px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--dark);
            transition: var(--transition);
            box-shadow: 0 2px 5px rgba(0,0,0,0.02);
        }

        .model-badge:hover {
            border-color: var(--primary);
            color: var(--primary);
            background-color: var(--accent-bg);
            transform: translateY(-2px);
        }

        /* Production (One-stop creation) Styles */
        .step-timeline {
            display: flex;
            justify-content: space-between;
            position: relative;
            margin-top: 50px;
            gap: 20px;
        }

        .step-timeline::before {
            content: '';
            position: absolute;
            top: 24px;
            left: 50px;
            right: 50px;
            height: 2px;
            background-color: var(--border);
            z-index: 1;
        }

        .step-node {
            flex: 1;
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .step-number {
            width: 50px;
            height: 50px;
            background-color: var(--white);
            border: 3px solid var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-weight: 700;
            color: var(--primary);
            font-size: 1.2rem;
            transition: var(--transition);
        }

        .step-node:hover .step-number {
            background-color: var(--primary);
            color: var(--white);
            transform: scale(1.1);
        }

        /* Compare Table Styles */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border-radius: 12px;
            border: 1px solid var(--border);
            background: var(--white);
        }

        table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 700px;
        }

        th, td {
            padding: 16px 24px;
            border-bottom: 1px solid var(--border);
        }

        th {
            background-color: var(--light);
            color: var(--dark);
            font-weight: 600;
        }

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

        .highlight-col {
            background-color: rgba(16, 185, 129, 0.03);
            border-left: 2px solid var(--primary);
            border-right: 2px solid var(--primary);
        }

        .score-badge {
            background-color: var(--primary);
            color: var(--white);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.85rem;
            font-weight: 600;
        }

        /* Customer Reviews Grid */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .review-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 28px;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
        }

        .review-user {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }

        .user-avatar {
            width: 44px;
            height: 44px;
            background-color: var(--accent-bg);
            color: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
        }

        .user-info h4 {
            font-size: 0.95rem;
            margin-bottom: 2px;
        }

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

        .review-text {
            color: var(--text-main);
            font-size: 0.9rem;
            line-height: 1.5;
        }

        /* Cases Grid */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

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

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

        .case-image-container {
            width: 100%;
            aspect-ratio: 16/9;
            overflow: hidden;
            background-color: var(--light);
        }

        .case-image-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .case-body {
            padding: 20px;
        }

        .case-tag {
            display: inline-block;
            background-color: var(--accent-bg);
            color: var(--primary);
            padding: 4px 8px;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 10px;
        }

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

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

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

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

        .faq-item.active .faq-question::after {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
            background-color: #FAFDFB;
        }

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

        .faq-item.active .faq-answer {
            max-height: 1000px;
            transition: max-height 0.3s cubic-bezier(1, 0, 1, 0);
        }

        /* Article List Area */
        .articles-area {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

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

        .article-card:hover {
            border-color: var(--primary);
            transform: translateX(4px);
        }

        .article-card h4 {
            font-size: 1rem;
            margin-bottom: 10px;
        }

        .article-link {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            font-size: 0.85rem;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            margin-top: 12px;
        }

        /* Forms (Contact / Booking) */
        .form-wrapper {
            background: var(--white);
            border: 1px solid var(--border);
            padding: 40px;
            border-radius: 16px;
            box-shadow: var(--shadow);
            max-width: 600px;
            margin: 0 auto;
        }

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

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

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border);
            border-radius: 8px;
            font-size: 0.95rem;
            color: var(--dark);
            outline: none;
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px var(--accent-bg);
        }

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

        /* Footer */
        footer {
            background-color: var(--dark);
            color: var(--border);
            padding: 80px 0 30px;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 60px;
        }

        .footer-col h3 {
            color: var(--white);
            margin-bottom: 20px;
            font-size: 1.1rem;
            position: relative;
        }

        .footer-col h3::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 30px;
            height: 2px;
            background-color: var(--primary);
        }

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

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

        .footer-col ul li a {
            color: var(--border);
            text-decoration: none;
            transition: var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--primary);
            padding-left: 5px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 20px;
        }

        .footer-brand img {
            max-height: 35px;
        }

        .footer-qrcode {
            max-width: 120px;
            height: auto;
            border-radius: 8px;
            margin-top: 10px;
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 20px;
        }

        .friend-links a {
            color: var(--border);
            text-decoration: none;
            font-size: 0.85rem;
            background-color: var(--dark-light);
            padding: 6px 12px;
            border-radius: 4px;
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid var(--dark-light);
            padding-top: 30px;
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* Floating Sidebar */
        .floating-sidebar {
            position: fixed;
            right: 24px;
            bottom: 100px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            z-index: 999;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            background-color: var(--white);
            color: var(--dark);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            cursor: pointer;
            position: relative;
            transition: var(--transition);
            border: 1px solid var(--border);
        }

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

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

        .float-btn .popover {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: var(--white);
            border: 1px solid var(--border);
            padding: 16px;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            display: none;
            flex-direction: column;
            align-items: center;
            width: 150px;
        }

        .float-btn .popover img {
            width: 120px;
            height: 120px;
            margin-bottom: 8px;
        }

        .float-btn .popover span {
            font-size: 0.8rem;
            color: var(--dark);
            text-align: center;
        }

        .float-btn:hover .popover {
            display: flex;
        }

        /* Responsive Breakpoints */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cases-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background-color: var(--white);
                padding: 20px;
                border-top: 1px solid var(--border);
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
            }

            .nav-links.active {
                display: flex;
            }

            .mobile-nav-toggle {
                display: flex;
            }

            .hero-title {
                font-size: 2.2rem;
            }

            .grid-2 {
                grid-template-columns: 1fr;
            }

            .step-timeline {
                flex-direction: column;
                gap: 30px;
            }

            .step-timeline::before {
                display: none;
            }

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

            .grid-3 {
                grid-template-columns: 1fr;
            }

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

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

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

            .articles-area {
                grid-template-columns: 1fr;
            }
        }