/* CSS Reset & Variables */
        :root {
            --bg-color: #080315;
            --card-bg: rgba(18, 10, 36, 0.7);
            --border-color: rgba(255, 0, 127, 0.2);
            --primary-pink: #ff007f;
            --primary-purple: #8a2be2;
            --accent-cyan: #00f0ff;
            --text-main: #f1f1f5;
            --text-muted: #a5a5cc;
            --text-dark: #080315;
            --glow-shadow: 0 0 15px rgba(255, 0, 127, 0.4);
            --glow-cyan: 0 0 15px rgba(0, 240, 255, 0.4);
            --container-width: 1200px;
        }

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

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

        /* Typography */
        h1, h2, h3, h4 {
            font-weight: 700;
            letter-spacing: 0.5px;
        }

        h2 {
            font-size: 2rem;
            margin-bottom: 25px;
            text-align: center;
            background: linear-gradient(135deg, var(--text-main) 30%, var(--primary-pink));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            position: relative;
            display: inline-block;
            left: 50%;
            transform: translateX(-50%);
        }

        h2::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 25%;
            width: 50%;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
        }

        p {
            color: var(--text-muted);
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: 30px;
            font-size: 1rem;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary-pink), var(--primary-purple));
            color: #fff;
            box-shadow: var(--glow-shadow);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 25px rgba(255, 0, 127, 0.7);
        }

        .btn-outline {
            background: transparent;
            border: 2px solid var(--accent-cyan);
            color: var(--accent-cyan);
            box-shadow: 0 0 10px rgba(0, 240, 255, 0.1);
        }

        .btn-outline:hover {
            background: var(--accent-cyan);
            color: var(--text-dark);
            box-shadow: var(--glow-cyan);
            transform: translateY(-2px);
        }

        /* Header & Navigation */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(8, 3, 21, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            transition: all 0.3s ease;
        }

        header .header-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 80px;
        }

        .logo-box {
            display: flex;
            align-items: center;
        }

        .ai-page-logo {
            height: 40px;
            filter: drop-shadow(0 0 8px var(--primary-pink));
        }

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

        .nav-menu {
            display: flex;
            list-style: none;
            gap: 13px;
        }

        .nav-menu a {
            color: var(--text-muted);
            text-decoration: none;
            font-size: 0.95rem;
            transition: color 0.3s;
        }

        .nav-menu a:hover {
            color: var(--accent-cyan);
            text-shadow: 0 0 8px rgba(0, 240, 255, 0.5);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-main);
            font-size: 1.5rem;
            cursor: pointer;
        }

        /* Section Layout */
        section {
            padding: 90px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.03);
            position: relative;
        }

        /* Hero Section (No Image) */
        #hero {
            padding: 160px 0 100px 0;
            background: radial-gradient(circle at 80% 20%, rgba(138, 43, 226, 0.15) 0%, transparent 50%),
                        radial-gradient(circle at 10% 80%, rgba(255, 0, 127, 0.12) 0%, transparent 50%);
            text-align: center;
        }

        .hero-tag {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            background: rgba(255, 0, 127, 0.1);
            border: 1px solid var(--primary-pink);
            color: var(--primary-pink);
            font-size: 0.9rem;
            margin-bottom: 20px;
            text-shadow: 0 0 5px rgba(255, 0, 127, 0.3);
        }

        #hero h1 {
            font-size: 3rem;
            line-height: 1.25;
            margin-bottom: 25px;
            background: linear-gradient(135deg, #fff 40%, var(--primary-pink) 70%, var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            max-width: 750px;
            margin: 0 auto 40px auto;
            font-size: 1.2rem;
            color: var(--text-muted);
        }

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

        .hero-features-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 50px;
        }

        .hero-feat-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 24px;
            border-radius: 12px;
            transition: all 0.3s ease;
        }

        .hero-feat-card:hover {
            transform: translateY(-5px);
            border-color: var(--accent-cyan);
            box-shadow: var(--glow-cyan);
        }

        .hero-feat-card h3 {
            color: var(--accent-cyan);
            margin-bottom: 10px;
            font-size: 1.15rem;
        }

        /* Stats Grid */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .stat-card {
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid rgba(255, 255, 255, 0.05);
            padding: 30px 20px;
            border-radius: 12px;
            text-align: center;
        }

        .stat-card .num {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--primary-pink);
            margin-bottom: 10px;
            display: block;
        }

        /* About Us & Platform Intro */
        .about-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .about-content h3 {
            color: var(--accent-cyan);
            font-size: 1.5rem;
            margin-bottom: 15px;
        }

        .about-features {
            margin-top: 25px;
            list-style: none;
        }

        .about-features li {
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .about-features li::before {
            content: '✓';
            color: var(--primary-pink);
            font-weight: bold;
        }

        .about-intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .intro-box {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 20px;
            border-radius: 12px;
        }

        .intro-box h4 {
            color: var(--text-main);
            margin-bottom: 10px;
        }

        /* Platforms list */
        .platform-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            margin-top: 30px;
        }

        .platform-tag {
            padding: 8px 16px;
            background: rgba(138, 43, 226, 0.1);
            border: 1px solid rgba(138, 43, 226, 0.3);
            border-radius: 20px;
            font-size: 0.9rem;
            color: var(--text-main);
            transition: all 0.3s ease;
        }

        .platform-tag:hover {
            border-color: var(--primary-pink);
            background: rgba(255, 0, 127, 0.15);
            transform: scale(1.05);
        }

        /* Cards Grid */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-top: 40px;
        }

        .service-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 30px;
            border-radius: 16px;
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: linear-gradient(to bottom, var(--primary-pink), var(--primary-purple));
        }

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

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

        .service-card p {
            font-size: 0.95rem;
            margin-bottom: 20px;
        }

        /* Flow steps */
        .flow-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .flow-card {
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid rgba(255, 255, 255, 0.05);
            padding: 30px 20px;
            border-radius: 12px;
            text-align: center;
            position: relative;
        }

        .flow-card .step-num {
            font-size: 3rem;
            font-weight: 800;
            color: rgba(255, 0, 127, 0.1);
            position: absolute;
            top: 10px;
            right: 20px;
        }

        .flow-card h3 {
            margin-bottom: 10px;
            color: var(--accent-cyan);
        }

        /* Comparison Table */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            margin-top: 40px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            background: var(--card-bg);
        }

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

        th, td {
            padding: 16px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        th {
            background: rgba(255, 0, 127, 0.1);
            color: var(--primary-pink);
            font-weight: 600;
        }

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

        .highlight-row {
            background: rgba(0, 240, 255, 0.03);
        }

        /* Image Display Grid (Non-Hero) */
        .image-gallery {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 20px;
            margin-top: 40px;
        }

        .gallery-item {
            position: relative;
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--border-color);
        }

        .gallery-item img {
            width: 100%;
            height: 250px;
            object-fit: cover;
            display: block;
            transition: transform 0.5s;
        }

        .gallery-item:hover img {
            transform: scale(1.08);
        }

        .gallery-caption {
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            padding: 15px;
            background: linear-gradient(transparent, rgba(8, 3, 21, 0.9));
            color: #fff;
        }

        .image-dual-layout {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 20px;
            margin-top: 30px;
        }

        .image-dual-layout img {
            width: 100%;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            object-fit: cover;
        }

        /* FAQ Accordion */
        .faq-accordion {
            max-width: 800px;
            margin: 40px auto 0 auto;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            margin-bottom: 15px;
            overflow: hidden;
        }

        .faq-header {
            padding: 20px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            transition: background 0.3s;
        }

        .faq-header:hover {
            background: rgba(255, 255, 255, 0.02);
        }

        .faq-header .arrow {
            transition: transform 0.3s;
            color: var(--primary-pink);
        }

        .faq-body {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: all 0.3s ease-out;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        .faq-item.active .faq-body {
            padding: 0 20px 20px 20px;
            max-height: 200px;
        }

        .faq-item.active .faq-header .arrow {
            transform: rotate(180deg);
        }

        /* Testimonials Grid */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
            margin-top: 40px;
        }

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

        .review-rating {
            color: #ffcc00;
            margin-bottom: 12px;
        }

        .review-text {
            font-size: 0.95rem;
            margin-bottom: 20px;
            font-style: italic;
        }

        .review-author {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 15px;
        }

        .author-info h4 {
            font-size: 0.95rem;
            color: var(--accent-cyan);
        }

        .author-info p {
            font-size: 0.8rem;
        }

        /* Article List Section */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
            margin-top: 40px;
        }

        .article-card {
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid rgba(255, 255, 255, 0.05);
            border-radius: 12px;
            padding: 25px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: all 0.3s;
        }

        .article-card:hover {
            border-color: var(--accent-cyan);
            transform: translateY(-3px);
        }

        .article-card h3 {
            font-size: 1.15rem;
            margin-bottom: 12px;
            color: var(--text-main);
        }

        .article-card p {
            font-size: 0.9rem;
            margin-bottom: 20px;
        }

        .article-link {
            color: var(--accent-cyan);
            text-decoration: none;
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

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

        /* Contact & Form Section */
        .contact-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            margin-top: 40px;
        }

        .contact-info-list {
            list-style: none;
        }

        .contact-info-list li {
            margin-bottom: 25px;
            display: flex;
            align-items: flex-start;
            gap: 15px;
        }

        .contact-info-list h4 {
            color: var(--accent-cyan);
            margin-bottom: 5px;
        }

        .qr-box {
            display: flex;
            gap: 20px;
            margin-top: 30px;
        }

        .qr-item {
            text-align: center;
            font-size: 0.85rem;
        }

        .qr-item img {
            width: 130px;
            height: 130px;
            border-radius: 8px;
            border: 2px solid var(--border-color);
            margin-bottom: 8px;
            padding: 5px;
            background: #fff;
        }

        /* Form styling */
        form {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 35px;
            border-radius: 16px;
            box-shadow: var(--glow-shadow);
        }

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

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

        .form-control {
            width: 100%;
            padding: 12px 16px;
            background: rgba(8, 3, 21, 0.6);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            color: var(--text-main);
            font-size: 1rem;
            transition: border-color 0.3s;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--accent-cyan);
            box-shadow: 0 0 8px rgba(0, 240, 255, 0.2);
        }

        /* Float elements */
        .float-kefu {
            position: fixed;
            right: 25px;
            bottom: 25px;
            z-index: 999;
            background: linear-gradient(135deg, var(--primary-pink), var(--primary-purple));
            width: 60px;
            height: 60px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--glow-shadow);
            cursor: pointer;
            transition: all 0.3s;
        }

        .float-kefu:hover {
            transform: scale(1.1);
        }

        .float-kefu svg {
            width: 28px;
            height: 28px;
            fill: #fff;
        }

        .kefu-modal {
            display: none;
            position: fixed;
            right: 95px;
            bottom: 25px;
            z-index: 999;
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 20px;
            border-radius: 12px;
            box-shadow: var(--glow-shadow);
            text-align: center;
            width: 200px;
        }

        .kefu-modal img {
            width: 100%;
            border-radius: 6px;
            margin-bottom: 10px;
        }

        /* Footer */
        footer {
            background: #04010a;
            padding: 60px 0 30px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 0.9rem;
        }

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

        .footer-logo-area p {
            margin-top: 15px;
            line-height: 1.7;
        }

        .footer-links h4 {
            color: var(--accent-cyan);
            margin-bottom: 20px;
            position: relative;
        }

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

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

        .footer-links a {
            color: var(--text-muted);
            text-decoration: none;
            transition: color 0.3s;
        }

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

        .friendship-links {
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .friendship-links h4 {
            color: var(--accent-cyan);
            margin-bottom: 15px;
        }

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

        .friendship-links a {
            color: var(--text-muted);
            text-decoration: none;
            font-size: 0.85rem;
            background: rgba(255, 255, 255, 0.02);
            padding: 5px 12px;
            border-radius: 4px;
            border: 1px solid rgba(255, 255, 255, 0.05);
            transition: all 0.3s;
        }

        .friendship-links a:hover {
            color: var(--accent-cyan);
            border-color: var(--accent-cyan);
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 30px;
        }

        /* Responsive Design */
        @media (max-width: 1024px) {
            .hero-features-list, .cards-grid, .reviews-grid, .article-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid, .flow-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .about-wrapper, .contact-layout {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            header .header-container {
                position: relative;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: 80px;
                left: 0;
                width: 100%;
                background: rgba(8, 3, 21, 0.95);
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
            }
            .nav-menu.active {
                display: flex;
            }
            .nav-toggle {
                display: block;
            }
            .hero-features-list, .cards-grid, .reviews-grid, .article-grid, .stats-grid, .flow-grid, .image-gallery, .footer-grid {
                grid-template-columns: 1fr;
            }
            .image-dual-layout {
                grid-template-columns: 1fr;
            }
            .qr-box {
                flex-wrap: wrap;
            }
        }