:root {
            --bg-primary: #f9fbff;
            --bg-secondary: #f0f4ff;
            --bg-card: #ffffff;
            --text-primary: #121829;
            --text-secondary: #4a5568;
            --text-light: #718096;
            --color-neon-purple: #8b5cf6;
            --color-neon-pink: #ec4899;
            --color-neon-blue: #06b6d4;
            --color-neon-green: #10b981;
            
            --border-glow: linear-gradient(90deg, var(--color-neon-purple), var(--color-neon-blue), var(--color-neon-pink));
            --shadow-neon: 0 4px 20px rgba(139, 92, 246, 0.15);
            --transition-smooth: 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(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
        }

        ul {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 顶部导航 */
        .ai-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(230, 235, 245, 1);
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.02);
            transition: var(--transition-smooth);
        }

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

        .ai-brand {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .ai-page-logo {
            max-height: 40px;
            object-fit: contain;
        }

        .ai-brand-name {
            font-size: 1.25rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--color-neon-purple), var(--color-neon-pink));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .ai-menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            border: none;
            background: transparent;
            padding: 5px;
        }

        .ai-menu-toggle span {
            width: 25px;
            height: 3px;
            background-color: var(--text-primary);
            transition: var(--transition-smooth);
        }

        .ai-menu {
            display: flex;
            align-items: center;
            gap: 25px;
        }

        .ai-menu-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition-smooth);
            position: relative;
        }

        .ai-menu-link::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--color-neon-blue), var(--color-neon-purple));
            transition: var(--transition-smooth);
        }

        .ai-menu-link:hover {
            color: var(--color-neon-purple);
        }

        .ai-menu-link:hover::after {
            width: 100%;
        }

        .ai-header-btn {
            background: linear-gradient(90deg, var(--color-neon-purple), var(--color-neon-blue));
            color: #ffffff;
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: 0 4px 15px rgba(139, 92, 246, 0.2);
            transition: var(--transition-smooth);
        }

        .ai-header-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(139, 92, 246, 0.35);
        }

        /* 统一模块样式 */
        .ai-section {
            padding: 90px 0;
            position: relative;
        }

        .ai-section-title-wrapper {
            text-align: center;
            margin-bottom: 50px;
        }

        .ai-section-badge {
            display: inline-block;
            padding: 5px 15px;
            border-radius: 30px;
            background: rgba(139, 92, 246, 0.08);
            color: var(--color-neon-purple);
            font-size: 0.85rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 15px;
            border: 1px solid rgba(139, 92, 246, 0.2);
        }

        .ai-section-title {
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 15px;
        }

        .ai-section-desc {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 700px;
            margin: 0 auto;
        }

        /* Hero首屏 - 无图片炫彩荧光风 */
        .ai-hero {
            padding-top: 170px;
            padding-bottom: 120px;
            background: radial-gradient(circle at 10% 20%, rgba(139, 92, 246, 0.05) 0%, rgba(6, 182, 212, 0.05) 90%);
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .ai-hero::before {
            content: '';
            position: absolute;
            top: -10%;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(139, 92, 246, 0.12) 0%, transparent 70%);
            z-index: 1;
            pointer-events: none;
        }

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

        .ai-hero-tagline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.9);
            border: 1px solid rgba(139, 92, 246, 0.3);
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-neon-purple);
            margin-bottom: 25px;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.02);
        }

        .ai-hero-tagline span {
            display: inline-block;
            width: 8px;
            height: 8px;
            background-color: var(--color-neon-green);
            border-radius: 50%;
            animation: pulse 1.5s infinite;
        }

        @keyframes pulse {
            0% { transform: scale(0.9); opacity: 0.6; }
            50% { transform: scale(1.2); opacity: 1; }
            100% { transform: scale(0.9); opacity: 0.6; }
        }

        .ai-hero-title {
            font-size: 3.5rem;
            line-height: 1.2;
            font-weight: 800;
            margin-bottom: 25px;
            color: var(--text-primary);
        }

        .ai-hero-title span {
            background: linear-gradient(135deg, var(--color-neon-purple), var(--color-neon-blue) 40%, var(--color-neon-pink));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .ai-hero-desc {
            font-size: 1.25rem;
            color: var(--text-secondary);
            margin-bottom: 40px;
            line-height: 1.7;
        }

        .ai-hero-actions {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .btn {
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition-smooth);
            cursor: pointer;
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-neon {
            background: linear-gradient(135deg, var(--color-neon-purple), var(--color-neon-blue));
            color: #ffffff;
            box-shadow: 0 8px 25px rgba(139, 92, 246, 0.3);
        }

        .btn-neon:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(139, 92, 246, 0.45);
        }

        .btn-outline {
            background: #ffffff;
            color: var(--text-primary);
            border: 2px solid rgba(226, 232, 240, 1);
            box-shadow: var(--shadow-neon);
        }

        .btn-outline:hover {
            border-color: var(--color-neon-blue);
            transform: translateY(-3px);
        }

        /* 数据指标卡片 */
        .ai-stats-bar {
            margin-top: -60px;
            position: relative;
            z-index: 10;
        }

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

        .ai-stat-card {
            background: var(--bg-card);
            border-radius: 20px;
            padding: 30px 20px;
            text-align: center;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
            border: 1px solid rgba(230, 235, 245, 1);
            transition: var(--transition-smooth);
        }

        .ai-stat-card:hover {
            transform: translateY(-5px);
            border-color: rgba(139, 92, 246, 0.3);
            box-shadow: var(--shadow-neon);
        }

        .ai-stat-num {
            font-size: 2.5rem;
            font-weight: 800;
            margin-bottom: 10px;
            background: linear-gradient(135deg, var(--color-neon-purple), var(--color-neon-blue));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .ai-stat-label {
            font-size: 0.95rem;
            color: var(--text-secondary);
            font-weight: 600;
        }

        /* 平台介绍 */
        .ai-about-card {
            background: var(--bg-card);
            border-radius: 24px;
            padding: 50px;
            border: 1px solid rgba(230, 235, 245, 1);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.02);
            margin-bottom: 50px;
        }

        .ai-about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .ai-about-title {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 20px;
            color: var(--text-primary);
        }

        .ai-about-title span {
            color: var(--color-neon-purple);
        }

        .ai-about-text {
            color: var(--text-secondary);
            font-size: 1.05rem;
            margin-bottom: 25px;
            line-height: 1.8;
        }

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

        .ai-highlight-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
        }

        .ai-highlight-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            background: rgba(16, 185, 129, 0.1);
            color: var(--color-neon-green);
            border-radius: 50%;
            font-size: 0.8rem;
        }

        /* 全平台AIGC服务 */
        .ai-service-tags {
            background: var(--bg-card);
            border-radius: 20px;
            padding: 40px;
            border: 1px solid rgba(230, 235, 245, 1);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.02);
        }

        .ai-tags-title {
            font-size: 1.25rem;
            font-weight: 800;
            margin-bottom: 25px;
            text-align: center;
            color: var(--text-primary);
        }

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

        .ai-tag {
            padding: 8px 18px;
            border-radius: 50px;
            background: var(--bg-secondary);
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 600;
            border: 1px solid rgba(230, 235, 245, 1);
            transition: var(--transition-smooth);
        }

        .ai-tag:hover {
            background: linear-gradient(135deg, rgba(139, 92, 246, 0.1), rgba(6, 182, 212, 0.1));
            border-color: var(--color-neon-purple);
            color: var(--color-neon-purple);
            transform: translateY(-2px);
        }

        /* 一站式AIGC制作 - 卡片组 */
        .ai-grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .ai-feature-card {
            background: var(--bg-card);
            border-radius: 20px;
            padding: 40px 30px;
            border: 1px solid rgba(230, 235, 245, 1);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.02);
            transition: var(--transition-smooth);
        }

        .ai-feature-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-neon);
            border-color: rgba(6, 182, 212, 0.3);
        }

        .ai-card-icon {
            width: 60px;
            height: 60px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(139, 92, 246, 0.1), rgba(6, 182, 212, 0.1));
            color: var(--color-neon-purple);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 25px;
            font-weight: 700;
        }

        .ai-card-title {
            font-size: 1.35rem;
            font-weight: 800;
            margin-bottom: 15px;
            color: var(--text-primary);
        }

        .ai-card-text {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* 流程步骤 */
        .ai-timeline {
            display: flex;
            justify-content: space-between;
            position: relative;
            margin-top: 50px;
        }

        .ai-timeline::before {
            content: '';
            position: absolute;
            top: 25px;
            left: 0;
            right: 0;
            height: 4px;
            background: #e2e8f0;
            z-index: 1;
        }

        .ai-timeline-item {
            flex: 1;
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 0 15px;
        }

        .ai-timeline-node {
            width: 54px;
            height: 54px;
            border-radius: 50%;
            background: #ffffff;
            border: 4px solid var(--color-neon-purple);
            color: var(--color-neon-purple);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            margin: 0 auto 20px;
            box-shadow: 0 4px 10px rgba(0,0,0,0.1);
            transition: var(--transition-smooth);
        }

        .ai-timeline-item:hover .ai-timeline-node {
            background: var(--color-neon-purple);
            color: #ffffff;
            transform: scale(1.1);
        }

        .ai-timeline-title {
            font-size: 1.15rem;
            font-weight: 800;
            margin-bottom: 10px;
            color: var(--text-primary);
        }

        .ai-timeline-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        /* 技术标准 */
        .ai-spec-table-wrapper {
            background: var(--bg-card);
            border-radius: 20px;
            border: 1px solid rgba(230, 235, 245, 1);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.02);
            overflow-x: auto;
            margin-bottom: 40px;
        }

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

        .ai-spec-table th, .ai-spec-table td {
            padding: 18px 24px;
            border-bottom: 1px solid rgba(230, 235, 245, 1);
        }

        .ai-spec-table th {
            background-color: var(--bg-secondary);
            color: var(--text-primary);
            font-weight: 800;
        }

        .ai-spec-table tr:last-child td {
            border-bottom: none;
        }

        .ai-spec-table td {
            color: var(--text-secondary);
            font-size: 0.95rem;
        }

        /* 客户案例中心 */
        .ai-case-card {
            background: var(--bg-card);
            border-radius: 20px;
            border: 1px solid rgba(230, 235, 245, 1);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.02);
            overflow: hidden;
            transition: var(--transition-smooth);
        }

        .ai-case-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-neon);
        }

        .ai-case-img-wrapper {
            width: 100%;
            overflow: hidden;
            background: #e2e8f0;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .ai-case-card img {
            width: 100%;
            height: auto;
            max-height: 250px;
            object-fit: cover;
            transition: var(--transition-smooth);
        }

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

        .ai-case-body {
            padding: 25px;
        }

        .ai-case-tag {
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--color-neon-blue);
            background: rgba(6, 182, 212, 0.1);
            padding: 4px 10px;
            border-radius: 30px;
            display: inline-block;
            margin-bottom: 15px;
        }

        .ai-case-title {
            font-size: 1.25rem;
            font-weight: 800;
            margin-bottom: 10px;
            color: var(--text-primary);
        }

        .ai-case-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* 对比评测 */
        .ai-compare-card {
            background: linear-gradient(135deg, rgba(255,255,255,0.9), rgba(240,244,255,0.9));
            border-radius: 24px;
            padding: 50px;
            border: 2px solid transparent;
            background-clip: padding-box;
            position: relative;
            box-shadow: 0 20px 40px rgba(139, 92, 246, 0.08);
        }

        .ai-compare-card::after {
            content: '';
            position: absolute;
            top: -2px; bottom: -2px; left: -2px; right: -2px;
            background: var(--border-glow);
            z-index: -1;
            border-radius: 26px;
        }

        .ai-compare-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 40px;
            flex-wrap: wrap;
            gap: 20px;
        }

        .ai-compare-score-box {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .ai-score-num {
            font-size: 3.5rem;
            font-weight: 900;
            color: var(--color-neon-purple);
        }

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

        .ai-compare-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .ai-compare-list-title {
            font-size: 1.25rem;
            font-weight: 800;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .ai-compare-list-title.pro {
            color: var(--color-neon-green);
        }

        .ai-compare-list-title.con {
            color: var(--text-light);
        }

        .ai-compare-list li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 15px;
            font-size: 0.95rem;
            color: var(--text-secondary);
            font-weight: 500;
        }

        .ai-compare-list li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 4px;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            font-weight: 800;
        }

        .ai-compare-list.pro-list li::before {
            content: '✓';
            background: rgba(16, 185, 129, 0.1);
            color: var(--color-neon-green);
        }

        .ai-compare-list.con-list li::before {
            content: '×';
            background: rgba(226, 232, 240, 1);
            color: var(--text-light);
        }

        /* 客户评论卡片 */
        .ai-testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .ai-review-card {
            background: var(--bg-card);
            border-radius: 20px;
            padding: 30px;
            border: 1px solid rgba(230, 235, 245, 1);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.02);
            transition: var(--transition-smooth);
        }

        .ai-review-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-neon);
        }

        .ai-review-stars {
            color: #ffb800;
            font-size: 1.1rem;
            margin-bottom: 15px;
        }

        .ai-review-content {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin-bottom: 20px;
            line-height: 1.7;
        }

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

        .ai-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-neon-purple), var(--color-neon-blue));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ffffff;
            font-weight: 800;
            font-size: 1rem;
        }

        .ai-user-info h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
        }

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

        /* 帮助中心 / FAQ */
        .ai-faq-wrapper {
            max-width: 850px;
            margin: 0 auto;
        }

        .ai-faq-item {
            background: var(--bg-card);
            border-radius: 12px;
            margin-bottom: 15px;
            border: 1px solid rgba(230, 235, 245, 1);
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.01);
            overflow: hidden;
            transition: var(--transition-smooth);
        }

        .ai-faq-header {
            padding: 20px 25px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            user-select: none;
            transition: var(--transition-smooth);
        }

        .ai-faq-header:hover {
            background-color: var(--bg-secondary);
        }

        .ai-faq-question {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
        }

        .ai-faq-icon {
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            color: var(--color-neon-purple);
            transition: var(--transition-smooth);
        }

        .ai-faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
        }

        .ai-faq-content {
            padding: 0 25px 20px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        .ai-faq-item.active .ai-faq-body {
            max-height: 200px;
        }

        .ai-faq-item.active .ai-faq-icon {
            transform: rotate(45deg);
        }

        /* 智能需求匹配 (表单) */
        .ai-form-card {
            background: var(--bg-card);
            border-radius: 24px;
            padding: 50px;
            border: 1px solid rgba(230, 235, 245, 1);
            box-shadow: 0 15px 40px rgba(0,0,0,0.02);
            max-width: 800px;
            margin: 0 auto;
        }

        .ai-form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 25px;
        }

        .ai-form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .ai-form-group.full-width {
            grid-column: span 2;
        }

        .ai-form-label {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-primary);
        }

        .ai-form-input, .ai-form-select, .ai-form-textarea {
            width: 100%;
            padding: 12px 16px;
            border-radius: 10px;
            border: 1px solid rgba(226, 232, 240, 1);
            background-color: var(--bg-primary);
            font-size: 0.95rem;
            color: var(--text-primary);
            transition: var(--transition-smooth);
        }

        .ai-form-input:focus, .ai-form-select:focus, .ai-form-textarea:focus {
            outline: none;
            border-color: var(--color-neon-purple);
            background-color: #ffffff;
            box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
        }

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

        .ai-form-submit {
            width: 100%;
            justify-content: center;
            padding: 15px;
        }

        /* 资讯 / 知识库 */
        .ai-article-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .ai-article-card {
            background: var(--bg-card);
            border-radius: 16px;
            padding: 25px;
            border: 1px solid rgba(230, 235, 245, 1);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.02);
            transition: var(--transition-smooth);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            height: 100%;
        }

        .ai-article-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-neon);
            border-color: rgba(139, 92, 246, 0.2);
        }

        .ai-article-meta {
            font-size: 0.8rem;
            color: var(--text-light);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .ai-article-title {
            font-size: 1.1rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.5;
            margin-bottom: 15px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .ai-article-link {
            font-size: 0.9rem;
            color: var(--color-neon-purple);
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .ai-article-link:hover {
            color: var(--color-neon-blue);
        }

        /* 页脚 */
        .ai-footer {
            background-color: var(--text-primary);
            color: rgba(255, 255, 255, 0.8);
            padding: 70px 0 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .ai-footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 50px;
        }

        .ai-footer-logo-area {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .ai-footer-title {
            color: #ffffff;
            font-size: 1.1rem;
            font-weight: 800;
            margin-bottom: 20px;
            position: relative;
        }

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

        .ai-footer-links a {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            transition: var(--transition-smooth);
        }

        .ai-footer-links a:hover {
            color: var(--color-neon-blue);
        }

        .ai-footer-contact {
            font-size: 0.9rem;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .ai-footer-social {
            display: flex;
            gap: 15px;
            margin-top: 15px;
        }

        .ai-footer-social img {
            width: 80px;
            height: 80px;
            border-radius: 8px;
            border: 2px solid rgba(255, 255, 255, 0.1);
        }

        .ai-footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
        }

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

        .ai-friend-links a {
            color: rgba(255, 255, 255, 0.5);
            transition: var(--transition-smooth);
        }

        .ai-friend-links a:hover {
            color: var(--color-neon-purple);
        }

        /* 浮动客服面板 */
        .ai-floating-panel {
            position: fixed;
            bottom: 40px;
            right: 40px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .ai-float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: #ffffff;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition-smooth);
            border: 1px solid rgba(230, 235, 245, 1);
            position: relative;
        }

        .ai-float-btn:hover {
            transform: translateY(-3px);
            background: linear-gradient(135deg, var(--color-neon-purple), var(--color-neon-blue));
            color: #ffffff;
            border-color: transparent;
        }

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

        .ai-float-qrcode {
            position: absolute;
            bottom: 60px;
            right: 0;
            background: #ffffff;
            border-radius: 12px;
            padding: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
            border: 1px solid rgba(230, 235, 245, 1);
            display: none;
            flex-direction: column;
            align-items: center;
            width: 140px;
        }

        .ai-float-qrcode img {
            width: 110px;
            height: 110px;
            object-fit: cover;
            margin-bottom: 8px;
        }

        .ai-float-qrcode span {
            font-size: 0.75rem;
            color: var(--text-primary);
            font-weight: 700;
        }

        .ai-float-btn:hover .ai-float-qrcode {
            display: flex;
        }

        /* 响应式适配 */
        @media (max-width: 1024px) {
            .ai-stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .ai-grid-3, .ai-testimonials-grid, .ai-article-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .ai-compare-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .ai-menu-toggle {
                display: flex;
            }
            .ai-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: #ffffff;
                border-bottom: 1px solid rgba(230, 235, 245, 1);
                padding: 20px;
                gap: 15px;
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
            }
            .ai-menu.active {
                display: flex;
            }
            .ai-hero-title {
                font-size: 2.25rem;
            }
            .ai-about-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .ai-stats-grid {
                grid-template-columns: 1fr;
            }
            .ai-grid-3, .ai-testimonials-grid, .ai-article-list {
                grid-template-columns: 1fr;
            }
            .ai-timeline {
                flex-direction: column;
                gap: 30px;
            }
            .ai-timeline::before {
                display: none;
            }
            .ai-form-grid {
                grid-template-columns: 1fr;
            }
            .ai-form-group.full-width {
                grid-column: span 1;
            }
            .ai-footer-grid {
                grid-template-columns: 1fr;
            }
        }