/* === 缤纷糖果亮色风 Global Style Base === */
        :root {
            --primary-pink: #ff3b81;
            --primary-purple: #7952n9;
            --candy-cyan: #00c4cc;
            --candy-yellow: #ffb800;
            --candy-blue: #2b7fff;
            --candy-violet: #8a2be2;
            --bg-light: #f8fafd;
            --card-bg: #ffffff;
            --text-main: #1f2937;
            --text-sub: #4b5563;
            --text-muted: #6b7280;
            --border-light: #e5e7eb;
            --shadow-candy: 0 12px 32px rgba(255, 59, 129, 0.08), 0 4px 12px rgba(0, 196, 204, 0.05);
            --radius-lg: 20px;
            --radius-md: 12px;
        }

        * {
            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-light);
            color: var(--text-main);
            line-height: 1.6;
        }

        body {
            overflow-x: hidden;
            width: 100%;
        }

        /* Standard Container Rules */
        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        a {
            color: var(--primary-pink);
            text-decoration: none;
            transition: all 0.2s ease;
        }

        a:hover {
            color: var(--candy-cyan);
        }

        /* === Header Navigation === */
        header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(229, 231, 235, 0.8);
            box-shadow: 0 4px 20px rgba(0,0,0,0.03);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
        }

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

        .brand-logo img.ai-page-logo {
            height: 42px;
            width: auto;
            object-fit: contain;
        }

        .brand-title {
            font-size: 1.25rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary-pink), var(--candy-violet));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        /* Strict Requirement: .nav-links gap must be 0 */
        .nav-links {
            display: flex;
            align-items: center;
            list-style: none;
            gap: 0;
        }

        .nav-links li a {
            display: block;
            padding: 8px 14px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-main);
            border-radius: 8px;
            transition: all 0.2s ease;
        }

        .nav-links li a:hover {
            background-color: rgba(255, 59, 129, 0.08);
            color: var(--primary-pink);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 22px;
            font-size: 0.95rem;
            font-weight: 700;
            border-radius: 50px;
            cursor: pointer;
            border: none;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            text-align: center;
        }

        .btn-primary {
            background: linear-gradient(135deg, #ff3b81 0%, #ff7a00 100%);
            color: #ffffff !important;
            box-shadow: 0 6px 18px rgba(255, 59, 129, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(255, 59, 129, 0.4);
        }

        .btn-secondary {
            background: linear-gradient(135deg, #00c4cc 0%, #2b7fff 100%);
            color: #ffffff !important;
            box-shadow: 0 6px 18px rgba(0, 196, 204, 0.25);
        }

        .btn-secondary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(0, 196, 204, 0.35);
        }

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

        /* === Section Common === */
        section {
            padding: 70px 0;
            position: relative;
        }

        .section-header {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 50px;
        }

        .section-tag {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 30px;
            background: linear-gradient(135deg, rgba(255, 59, 129, 0.1), rgba(0, 196, 204, 0.1));
            color: var(--primary-pink);
            font-weight: 700;
            font-size: 0.85rem;
            margin-bottom: 14px;
            letter-spacing: 1px;
            text-transform: uppercase;
        }

        .section-title {
            font-size: 2.1rem;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 14px;
            line-height: 1.3;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-sub);
        }

        /* === Hero Section (NO IMAGES AT ALL) === */
        .hero-section {
            padding: 90px 0 70px;
            background: radial-gradient(circle at 10% 20%, rgba(255, 240, 246, 0.8) 0%, rgba(230, 247, 255, 0.8) 50%, rgba(248, 250, 253, 1) 100%);
            text-align: center;
        }

        .hero-badge-group {
            display: flex;
            justify-content: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 24px;
        }

        .hero-badge {
            background: #ffffff;
            border: 1px solid rgba(255, 59, 129, 0.2);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--primary-pink);
            box-shadow: 0 4px 12px rgba(0,0,0,0.03);
        }

        h1.hero-h1 {
            font-size: 2.5rem;
            font-weight: 900;
            color: #111827;
            margin-bottom: 20px;
            line-height: 1.25;
            letter-spacing: -0.5px;
        }

        .hero-subtitle {
            font-size: 1.2rem;
            color: var(--text-sub);
            max-width: 860px;
            margin: 0 auto 36px;
            font-weight: 500;
        }

        .hero-cta-box {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 50px;
        }

        .btn-visit-official {
            background: linear-gradient(135deg, #10b981 0%, #059669 100%);
            color: #ffffff !important;
            font-size: 1.1rem;
            padding: 14px 34px;
            box-shadow: 0 8px 24px rgba(16, 185, 129, 0.3);
        }

        .btn-visit-official:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 28px rgba(16, 185, 129, 0.4);
        }

        .hero-stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            max-width: 1000px;
            margin: 0 auto;
        }

        .stat-card {
            background: #ffffff;
            padding: 24px;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-candy);
            border: 1px solid rgba(255, 255, 255, 0.8);
            transition: transform 0.3s ease;
        }

        .stat-card:hover {
            transform: translateY(-4px);
        }

        .stat-number {
            font-size: 2.2rem;
            font-weight: 900;
            background: linear-gradient(135deg, var(--primary-pink), var(--candy-violet));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 600;
            margin-top: 4px;
        }

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

        .about-content-card {
            background: #ffffff;
            padding: 36px;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-candy);
            border: 1px solid var(--border-light);
        }

        .model-tags-container {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 20px;
        }

        .model-tag {
            background: #f0f7ff;
            color: var(--candy-blue);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            border: 1px solid rgba(43, 127, 255, 0.15);
        }

        /* === Grid Layouts for Capabilities & Services === */
        .cards-grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .cards-grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .feature-card {
            background: #ffffff;
            padding: 30px 24px;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-candy);
            border: 1px solid var(--border-light);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .feature-card:hover {
            transform: translateY(-5px);
            border-color: rgba(255, 59, 129, 0.3);
        }

        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(255, 59, 129, 0.15), rgba(0, 196, 204, 0.15));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            margin-bottom: 18px;
            color: var(--primary-pink);
        }

        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .feature-card p {
            font-size: 0.93rem;
            color: var(--text-sub);
            line-height: 1.5;
        }

        /* === Process Timeline === */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .process-card {
            background: #ffffff;
            padding: 28px 20px;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-candy);
            text-align: center;
            border: 1px solid var(--border-light);
        }

        .step-num {
            width: 44px;
            height: 44px;
            background: linear-gradient(135deg, var(--primary-pink), var(--candy-violet));
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
            margin: 0 auto 16px;
        }

        /* === Comparison Table Section === */
        .comparison-box {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 36px;
            box-shadow: var(--shadow-candy);
            border: 1px solid var(--border-light);
        }

        .rating-banner {
            display: flex;
            align-items: center;
            justify-content: space-around;
            background: linear-gradient(135deg, #fff0f6 0%, #e6f7ff 100%);
            padding: 24px;
            border-radius: var(--radius-md);
            margin-bottom: 30px;
            flex-wrap: wrap;
            gap: 20px;
        }

        .rating-item {
            text-align: center;
        }

        .rating-val {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--primary-pink);
        }

        .rating-stars {
            color: #ffb800;
            font-size: 1.5rem;
        }

        .table-responsive {
            width: 100%;
            overflow-x: auto;
        }

        .comp-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
        }

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

        .comp-table th {
            background: #f9fafb;
            font-weight: 700;
            color: var(--text-main);
        }

        .comp-table tr:hover {
            background: #fef2f8;
        }

        .highlight-cell {
            font-weight: 700;
            color: var(--primary-pink);
        }

        /* === Case Center Showcase === */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .case-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-candy);
            border: 1px solid var(--border-light);
        }

        .case-img-wrap {
            width: 100%;
            height: 220px;
            overflow: hidden;
            background: #f3f4f6;
        }

        .case-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

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

        .case-info {
            padding: 20px;
        }

        .case-info h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .case-info p {
            font-size: 0.9rem;
            color: var(--text-sub);
        }

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

        .review-card {
            background: #ffffff;
            padding: 28px;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-candy);
            border: 1px solid var(--border-light);
        }

        .reviewer-info {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 14px;
        }

        .reviewer-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--candy-cyan), var(--primary-pink));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }

        .reviewer-role {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .review-text {
            font-size: 0.93rem;
            color: var(--text-sub);
            font-style: italic;
        }

        /* === FAQ Accordion === */
        .faq-list {
            max-width: 900px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: #ffffff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            box-shadow: 0 4px 12px rgba(0,0,0,0.02);
        }

        .faq-question {
            padding: 20px 24px;
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: #ffffff;
            user-select: none;
        }

        .faq-question::after {
            content: "+";
            font-size: 1.4rem;
            color: var(--primary-pink);
            transition: transform 0.3s ease;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            background: #fcfdfe;
            color: var(--text-sub);
            font-size: 0.95rem;
            padding: 0 24px;
        }

        .faq-item.active .faq-answer {
            max-height: 250px;
            padding: 0 24px 20px;
        }

        /* === Articles & News === */
        .articles-box {
            background: #ffffff;
            padding: 32px;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-candy);
            border: 1px solid var(--border-light);
        }

        .article-links-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            list-style: none;
            margin-top: 20px;
        }

        .article-links-list li a {
            display: flex;
            align-items: center;
            padding: 12px 18px;
            background: #f8fafd;
            border-radius: 10px;
            font-weight: 600;
            color: var(--text-main);
            border: 1px solid var(--border-light);
        }

        .article-links-list li a:hover {
            background: #fff0f6;
            color: var(--primary-pink);
        }

        /* === Contact & Form === */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 40px;
        }

        .contact-info-card {
            background: #ffffff;
            padding: 36px;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-candy);
            border: 1px solid var(--border-light);
        }

        .contact-method {
            margin-bottom: 24px;
        }

        .contact-method h4 {
            font-size: 1rem;
            color: var(--text-muted);
            margin-bottom: 6px;
        }

        .contact-method p {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-main);
        }

        .qr-code-img {
            max-width: 160px;
            border-radius: 12px;
            border: 1px solid var(--border-light);
            margin-top: 8px;
        }

        .form-card {
            background: #ffffff;
            padding: 36px;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-candy);
            border: 1px solid var(--border-light);
        }

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

        .form-group label {
            display: block;
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border-radius: 10px;
            border: 1px solid var(--border-light);
            font-size: 0.95rem;
            outline: none;
            transition: border-color 0.2s ease;
            background: #fafafa;
        }

        .form-control:focus {
            border-color: var(--primary-pink);
            background: #ffffff;
        }

        textarea.form-control {
            min-height: 110px;
            resize: vertical;
        }

        /* === Footer === */
        footer {
            background: #111827;
            color: #9ca3af;
            padding: 60px 0 30px;
            border-top: 1px solid #1f2937;
        }

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

        .footer-brand h3 {
            color: #ffffff;
            font-size: 1.4rem;
            margin-bottom: 12px;
        }

        .friendship-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 16px;
        }

        .friendship-links a {
            color: #9ca3af;
            font-size: 0.88rem;
            background: #1f2937;
            padding: 6px 14px;
            border-radius: 6px;
        }

        .friendship-links a:hover {
            color: #ffffff;
            background: var(--primary-pink);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #1f2937;
            font-size: 0.88rem;
            color: #6b7280;
        }

        /* === Floating Service Widget === */
        .floating-widget {
            position: fixed;
            bottom: 30px;
            right: 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;
            font-size: 1.2rem;
            color: var(--primary-pink);
            border: 1px solid var(--border-light);
            transition: transform 0.2s ease;
        }

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

        /* === Responsive Breakpoints === */
        @media (max-width: 1024px) {
            .hero-stats-grid { grid-template-columns: repeat(2, 1fr); }
            .cards-grid-3, .case-grid, .reviews-grid { grid-template-columns: repeat(2, 1fr); }
            .cards-grid-4, .process-steps { grid-template-columns: repeat(2, 1fr); }
            .about-grid, .contact-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 76px;
                left: 0;
                width: 100%;
                background: #ffffff;
                flex-direction: column;
                padding: 20px 0;
                box-shadow: 0 10px 20px rgba(0,0,0,0.1);
            }
            .nav-links.active { display: flex; }
            .mobile-menu-btn { display: block; }
            h1.hero-h1 { font-size: 1.8rem; }
            .hero-stats-grid, .cards-grid-3, .cards-grid-4, .process-steps, .case-grid, .reviews-grid { grid-template-columns: 1fr; }
            .article-links-list { grid-template-columns: 1fr; }
        }