/* === Color System: Vibrant Candy Light Tone === */
        :root {
            --bg-body: #f8fafc;
            --bg-surface: #ffffff;
            --bg-subtle: #f1f5f9;
            --primary-candy: #ec4899;
            --primary-gradient: linear-gradient(135deg, #ff4b91 0%, #7c3aed 100%);
            --candy-cyan: #06b6d4;
            --candy-purple: #8b5cf6;
            --candy-orange: #f97316;
            --candy-green: #10b981;
            --text-dark: #0f172a;
            --text-muted: #475569;
            --text-light: #64748b;
            --border-light: #e2e8f0;
            --border-candy: rgba(236, 72, 153, 0.2);
            --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
            --shadow-candy: 0 10px 30px -5px rgba(236, 72, 153, 0.15);
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-full: 9999px;
            --container-max: 1200px;
        }

        /* Basic Reset */
        * { 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(--bg-body); color: var(--text-dark); line-height: 1.6; }
        body { background: linear-gradient(180deg, #fff5f8 0%, #f8fafc 400px, #f8fafc 100%); }
        a { color: var(--candy-purple); text-decoration: none; transition: all 0.3s ease; }
        a:hover { color: var(--primary-candy); }
        ul { list-style: none; }
        img { max-width: 100%; height: auto; display: block; }

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

        /* Typography & Utility Components */
        .section-tag {
            display: inline-block;
            padding: 4px 14px;
            background: rgba(236, 72, 153, 0.1);
            color: var(--primary-candy);
            font-size: 0.85rem;
            font-weight: 700;
            border-radius: var(--radius-full);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 720px;
            margin: 0 auto 40px auto;
        }
        .text-center { text-align: center; }
        .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

        /* Modern Candy Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-size: 1rem;
            font-weight: 700;
            border-radius: var(--radius-full);
            cursor: pointer;
            transition: all 0.3s ease;
            border: none;
            outline: none;
            gap: 8px;
        }
        .btn-candy {
            background: var(--primary-gradient);
            color: #ffffff !important;
            box-shadow: 0 8px 20px rgba(236, 72, 153, 0.35);
        }
        .btn-candy:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 25px rgba(236, 72, 153, 0.45);
        }
        .btn-outline {
            background: #ffffff;
            color: var(--text-dark);
            border: 2px solid #e2e8f0;
        }
        .btn-outline:hover {
            border-color: var(--primary-candy);
            color: var(--primary-candy);
        }

        /* === Header & Navigation === */
        header.site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-candy);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
        }
        .brand-logo-area {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .ai-page-logo {
            max-height: 44px;
            width: auto;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .nav-link {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-muted);
        }
        .nav-link:hover {
            color: var(--primary-candy);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-dark);
            cursor: pointer;
        }

        /* === Section 1: Hero (No Images Allowed!) === */
        .hero-section {
            padding: 80px 0 60px 0;
            position: relative;
            overflow: hidden;
            background: radial-gradient(circle at 10% 20%, rgba(236, 72, 153, 0.08) 0%, transparent 40%),
                        radial-gradient(circle at 90% 80%, rgba(139, 92, 246, 0.08) 0%, transparent 40%);
        }
        .hero-badge-wrap {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #ffffff;
            border: 1px solid rgba(236, 72, 153, 0.25);
            padding: 6px 16px;
            border-radius: var(--radius-full);
            margin-bottom: 24px;
            box-shadow: var(--shadow-sm);
        }
        .hero-badge-dot {
            width: 8px;
            height: 8px;
            background: var(--primary-candy);
            border-radius: 50%;
            animation: pulse 2s infinite;
        }
        @keyframes pulse { 0% { opacity: 1; transform: scale(1); } 50% { opacity: 0.4; transform: scale(1.3); } 100% { opacity: 1; transform: scale(1); } }
        .hero-h1 {
            font-size: 2.8rem;
            font-weight: 900;
            letter-spacing: -0.5px;
            color: var(--text-dark);
            margin-bottom: 20px;
            line-height: 1.2;
        }
        .hero-h1 span {
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-subtext {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 780px;
            margin: 0 auto 36px auto;
        }
        .hero-ctas {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            margin-bottom: 50px;
        }

        /* Metric Cards Component */
        .hero-metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 20px;
        }
        .metric-card {
            background: #ffffff;
            border-radius: var(--radius-md);
            padding: 24px 16px;
            border: 1px solid var(--border-candy);
            box-shadow: var(--shadow-candy);
            text-align: center;
            transition: transform 0.3s ease;
        }
        .metric-card:hover { transform: translateY(-4px); }
        .metric-val {
            font-size: 2rem;
            font-weight: 800;
            color: var(--candy-purple);
            margin-bottom: 4px;
        }
        .metric-lbl {
            font-size: 0.88rem;
            color: var(--text-light);
            font-weight: 600;
        }

        /* Shared Card Styles */
        .candy-card {
            background: var(--bg-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            padding: 30px;
            transition: all 0.3s ease;
            box-shadow: 0 4px 20px rgba(0,0,0,0.03);
            position: relative;
            overflow: hidden;
        }
        .candy-card:hover {
            border-color: rgba(236, 72, 153, 0.3);
            box-shadow: var(--shadow-candy);
            transform: translateY(-3px);
        }

        /* Generic Section Spacing */
        section.page-section {
            padding: 70px 0;
            border-bottom: 1px solid rgba(226, 232, 240, 0.6);
        }

        /* Section Specific Styles */
        /* Platform Models Grid */
        .model-tags-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-top: 20px;
        }
        .model-chip {
            background: #ffffff;
            border: 1px solid #cbd5e1;
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-dark);
            box-shadow: 0 2px 5px rgba(0,0,0,0.03);
        }
        .model-chip.highlight {
            background: rgba(236, 72, 153, 0.1);
            border-color: var(--primary-candy);
            color: var(--primary-candy);
        }

        /* Comparison Table */
        .table-responsive {
            overflow-x: auto;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            background: #ffffff;
            text-align: left;
        }
        .compare-table th, .compare-table td {
            padding: 16px 20px;
            border-bottom: 1px solid #f1f5f9;
            font-size: 0.95rem;
        }
        .compare-table th {
            background: #f8fafc;
            color: var(--text-dark);
            font-weight: 800;
        }
        .compare-table tr:hover { background: #fff5f8; }
        .badge-star {
            display: inline-block;
            background: #fef3c7;
            color: #d97706;
            padding: 4px 10px;
            border-radius: 6px;
            font-weight: 800;
        }

        /* Training List */
        .training-card {
            border-left: 5px solid var(--candy-cyan);
        }

        /* Reviews Grid */
        .review-author {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 20px;
        }
        .author-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary-gradient);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
        }

        /* FAQ Accordion */
        .faq-item {
            background: #ffffff;
            border: 1px solid #e2e8f0;
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
        }
        .faq-question {
            padding: 20px;
            font-size: 1.05rem;
            font-weight: 700;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: #ffffff;
        }
        .faq-answer {
            padding: 0 20px 20px 20px;
            color: var(--text-muted);
            font-size: 0.95rem;
            display: none;
        }
        .faq-item.active .faq-answer { display: block; }
        .faq-item.active .faq-icon { transform: rotate(180deg); }
        .faq-icon { transition: transform 0.3s; font-weight: bold; }

        /* Form Controls */
        .form-group {
            margin-bottom: 20px;
        }
        .form-label {
            display: block;
            font-weight: 700;
            margin-bottom: 8px;
            font-size: 0.9rem;
            color: var(--text-dark);
        }
        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid #cbd5e1;
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            transition: border-color 0.3s;
        }
        .form-control:focus {
            outline: none;
            border-color: var(--primary-candy);
        }

        /* Image Media Styling */
        .media-box {
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
            margin-top: 16px;
        }
        .ai-page-image {
            width: 100%;
            height: auto;
            object-fit: cover;
        }

        /* Footer */
        footer.site-footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px 0;
            font-size: 0.9rem;
        }
        footer a { color: #cbd5e1; }
        footer a:hover { color: #ffffff; }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand h3 {
            color: #ffffff;
            font-size: 1.3rem;
            margin-bottom: 12px;
        }
        .footer-col h4 {
            color: #ffffff;
            font-size: 1rem;
            margin-bottom: 16px;
        }
        .footer-links li { margin-bottom: 10px; }
        .footer-bottom {
            border-top: 1px solid #334155;
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }
        .friend-links-area {
            margin-top: 20px;
            padding-top: 20px;
            border-top: 1px solid #1e293b;
        }
        .friend-links-area a {
            margin-right: 14px;
            display: inline-block;
            color: #94a3b8;
            font-size: 0.85rem;
        }

        /* Floating Contact Widget */
        .float-widget {
            position: fixed;
            right: 20px;
            bottom: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .float-btn {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: #ffffff;
            box-shadow: 0 8px 24px rgba(0,0,0,0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            position: relative;
            border: 1px solid var(--border-candy);
            transition: transform 0.3s ease;
        }
        .float-btn:hover { transform: scale(1.1); }
        .qr-popover {
            display: none;
            position: absolute;
            right: 64px;
            bottom: 0;
            background: #ffffff;
            padding: 16px;
            border-radius: var(--radius-md);
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
            width: 180px;
            text-align: center;
        }
        .float-btn:hover .qr-popover { display: block; }

        /* Responsive Breakpoints */
        @media (max-width: 992px) {
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
            .grid-3 { grid-template-columns: repeat(1, 1fr); }
            .hero-metrics-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: 76px;
                left: 0;
                width: 100%;
                background: #ffffff;
                flex-direction: column;
                padding: 20px;
                box-shadow: 0 10px 20px rgba(0,0,0,0.1);
            }
            .nav-menu.active { display: flex; }
            .mobile-menu-btn { display: block; }
            .grid-2 { grid-template-columns: 1fr; }
            .hero-metrics-grid { grid-template-columns: 1fr; }
            .hero-h1 { font-size: 2rem; }
            .footer-grid { grid-template-columns: 1fr; }
        }