/* 缤纷糖果亮色风 核心配色与基础样式 */
        :root {
            --primary-candy: #ff6b8b;      /* 樱桃糖果粉 */
            --secondary-candy: #4ea8de;    /* 薄荷苏打蓝 */
            --accent-candy: #ffca3a;       /* 柠檬黄 */
            --green-candy: #70e000;        /* 青苹果绿 */
            --purple-candy: #9d4edd;       /* 葡萄紫 */
            --bg-light: #fbfbfd;           /* 软米白 */
            --bg-gradient: linear-gradient(135deg, #fff0f5 0%, #e6f7ff 100%);
            --text-dark: #1d1d1f;          /* 极客深灰 */
            --text-muted: #6e6e73;         /* 中灰 */
            --border-color: rgba(0, 0, 0, 0.08);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        a {
            text-decoration: none;
            color: var(--secondary-candy);
            transition: var(--transition);
        }

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

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

        /* 顶部导航 */
        header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }

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

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

        .ai-page-logo {
            height: 40px;
            width: auto;
            border-radius: 8px;
        }

        .brand-name {
            font-size: 20px;
            font-weight: 800;
            background: linear-gradient(45deg, var(--primary-candy), var(--secondary-candy));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .nav-menu {
            display: flex;
            gap: 20px;
            list-style: none;
        }

        .nav-item a {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-dark);
            padding: 8px 12px;
            border-radius: 20px;
        }

        .nav-item a:hover {
            background-color: rgba(255, 107, 139, 0.1);
            color: var(--primary-candy);
        }

        .nav-btn {
            background: linear-gradient(135deg, var(--primary-candy) 0%, #ff4f73 100%);
            color: #fff !important;
            box-shadow: 0 4px 15px rgba(255, 107, 139, 0.3);
        }

        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 107, 139, 0.4);
        }

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

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

        /* Hero首屏 - 严禁包含图片，纯色/渐变/几何块/动效配置 */
        .hero-section {
            padding: 120px 0 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero-bg-shapes {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            pointer-events: none;
        }

        .shape {
            position: absolute;
            border-radius: 50%;
            filter: blur(60px);
            opacity: 0.4;
            animation: floatShape 8s ease-in-out infinite alternate;
        }

        .shape-1 {
            top: 10%;
            left: 15%;
            width: 300px;
            height: 300px;
            background: var(--primary-candy);
        }

        .shape-2 {
            bottom: 20%;
            right: 15%;
            width: 350px;
            height: 350px;
            background: var(--secondary-candy);
        }

        .shape-3 {
            top: 40%;
            left: 50%;
            width: 250px;
            height: 250px;
            background: var(--accent-candy);
        }

        @keyframes floatShape {
            0% { transform: translate(0, 0) scale(1); }
            100% { transform: translate(30px, 40px) scale(1.1); }
        }

        h1.hero-title {
            font-size: clamp(32px, 5vw, 56px);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 24px;
            color: var(--text-dark);
        }

        .hero-title span {
            background: linear-gradient(120deg, var(--primary-candy), var(--secondary-candy), var(--purple-candy));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-subtitle {
            font-size: clamp(16px, 2vw, 20px);
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 40px auto;
        }

        .hero-cta-group {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 32px;
            font-size: 16px;
            font-weight: 700;
            border-radius: 30px;
            background: linear-gradient(135deg, var(--secondary-candy) 0%, #3a86c8 100%);
            color: #fff;
            box-shadow: 0 8px 25px rgba(78, 168, 222, 0.35);
            transition: var(--transition);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(78, 168, 222, 0.45);
            color: #fff;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 32px;
            font-size: 16px;
            font-weight: 700;
            border-radius: 30px;
            background: #fff;
            color: var(--text-dark);
            border: 2px solid var(--border-color);
            transition: var(--transition);
        }

        .btn-secondary:hover {
            border-color: var(--primary-candy);
            color: var(--primary-candy);
            transform: translateY(-3px);
        }

        /* 统一模块样式 */
        section {
            padding: 80px 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-tag {
            display: inline-block;
            padding: 6px 16px;
            font-size: 12px;
            font-weight: 800;
            text-transform: uppercase;
            letter-spacing: 1px;
            border-radius: 20px;
            background-color: rgba(255, 107, 139, 0.1);
            color: var(--primary-candy);
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-dark);
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
            margin-top: 40px;
        }

        .stat-card {
            background: #fff;
            padding: 30px 20px;
            border-radius: 20px;
            text-align: center;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(255, 107, 139, 0.1);
            border-color: rgba(255, 107, 139, 0.2);
        }

        .stat-number {
            font-size: 40px;
            font-weight: 800;
            color: var(--primary-candy);
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 600;
        }

        /* 服务能力卡片 */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .service-card {
            background: #fff;
            padding: 40px 30px;
            border-radius: 24px;
            box-shadow: 0 10px 35px rgba(0, 0, 0, 0.02);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 6px;
            background: linear-gradient(90deg, var(--secondary-candy), var(--primary-candy));
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 45px rgba(78, 168, 222, 0.15);
        }

        .icon-box {
            width: 60px;
            height: 60px;
            border-radius: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            margin-bottom: 24px;
        }

        .bg-pink { background: rgba(255, 107, 139, 0.1); color: var(--primary-candy); }
        .bg-blue { background: rgba(78, 168, 222, 0.1); color: var(--secondary-candy); }
        .bg-yellow { background: rgba(255, 202, 58, 0.15); color: #d4a017; }
        .bg-green { background: rgba(112, 224, 0, 0.1); color: var(--green-candy); }
        .bg-purple { background: rgba(157, 78, 221, 0.1); color: var(--purple-candy); }

        .service-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 20px;
        }

        .service-list {
            list-style: none;
        }

        .service-list li {
            font-size: 13px;
            color: var(--text-dark);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .service-list li::before {
            content: '✦';
            color: var(--primary-candy);
        }

        /* 流程步骤 */
        .step-timeline {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            position: relative;
            margin-top: 40px;
        }

        .step-timeline::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--border-color);
            z-index: 1;
        }

        .step-node {
            flex: 1;
            min-width: 200px;
            text-align: center;
            position: relative;
            z-index: 2;
            padding: 0 15px;
            margin-bottom: 30px;
        }

        .step-number {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: #fff;
            border: 4px solid var(--secondary-candy);
            color: var(--secondary-candy);
            font-size: 24px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px auto;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.05);
            transition: var(--transition);
        }

        .step-node:hover .step-number {
            background: var(--secondary-candy);
            color: #fff;
            transform: scale(1.1);
        }

        .step-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .step-desc {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* 对比表格 */
        .table-responsive {
            overflow-x: auto;
            border-radius: 20px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
            border: 1px solid var(--border-color);
            background: #fff;
            margin-top: 30px;
        }

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

        th, td {
            padding: 18px 24px;
            border-bottom: 1px solid var(--border-color);
        }

        th {
            background-color: rgba(78, 168, 222, 0.05);
            font-weight: 700;
            color: var(--text-dark);
        }

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

        .highlight-col {
            background-color: rgba(255, 107, 139, 0.02);
            font-weight: 600;
        }

        .score-badge {
            display: inline-block;
            padding: 4px 12px;
            background-color: var(--primary-candy);
            color: #fff;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 700;
        }

        /* 案例展示 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .case-card {
            background: #fff;
            border-radius: 20px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.02);
            transition: var(--transition);
        }

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.08);
        }

        .case-img-wrapper {
            position: relative;
            width: 100%;
            height: 200px;
            overflow: hidden;
            background-color: #eee;
        }

        .case-img-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

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

        .case-content {
            padding: 24px;
        }

        .case-tag {
            font-size: 11px;
            font-weight: 700;
            color: var(--secondary-candy);
            text-transform: uppercase;
            margin-bottom: 8px;
            display: inline-block;
        }

        .case-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-dark);
        }

        .case-desc {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* 客户评论卡片 */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
        }

        .testimonial-card {
            background: #fff;
            padding: 30px;
            border-radius: 20px;
            border: 1px solid var(--border-color);
            box-shadow: 0 8px 25px rgba(0,0,0,0.02);
            position: relative;
        }

        .testimonial-text {
            font-size: 14px;
            color: var(--text-dark);
            font-style: italic;
            margin-bottom: 20px;
            position: relative;
        }

        .testimonial-text::before {
            content: '“';
            font-size: 40px;
            color: rgba(255, 107, 139, 0.2);
            position: absolute;
            top: -20px;
            left: -10px;
        }

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

        .user-avatar {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background-color: var(--secondary-candy);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
        }

        .user-info h4 {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-dark);
        }

        .user-info p {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* FAQ折叠面板 */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: #fff;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-question {
            padding: 20px 24px;
            font-weight: 700;
            font-size: 16px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-question::after {
            content: '+';
            font-size: 20px;
            color: var(--secondary-candy);
            transition: var(--transition);
        }

        .faq-item.active .faq-question::after {
            content: '−';
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background: rgba(78, 168, 222, 0.02);
        }

        .faq-answer-content {
            padding: 0 24px 20px 24px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 标签云与价格参考 */
        .tags-container {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-top: 20px;
        }

        .tag-pill {
            padding: 8px 16px;
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 20px;
            font-size: 13px;
            color: var(--text-dark);
            font-weight: 600;
            transition: var(--transition);
        }

        .tag-pill:hover {
            border-color: var(--primary-candy);
            color: var(--primary-candy);
            background-color: rgba(255, 107, 139, 0.05);
            transform: scale(1.05);
        }

        .price-card {
            background: #fff;
            border-radius: 24px;
            padding: 40px 30px;
            text-align: center;
            border: 2px solid transparent;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.02);
            transition: var(--transition);
        }

        .price-card.featured {
            border-color: var(--primary-candy);
            transform: scale(1.03);
        }

        .price-card h3 {
            font-size: 22px;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .price-num {
            font-size: 44px;
            font-weight: 900;
            color: var(--primary-candy);
            margin-bottom: 20px;
        }

        /* 知识库/资讯 */
        .article-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 15px;
            margin-top: 30px;
        }

        .article-item {
            background: #fff;
            padding: 20px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
            transition: var(--transition);
        }

        .article-item:hover {
            border-color: var(--secondary-candy);
            transform: translateX(5px);
        }

        .article-title {
            font-weight: 700;
            color: var(--text-dark);
            font-size: 15px;
        }

        .article-link {
            font-size: 13px;
            color: var(--secondary-candy);
            font-weight: 600;
            white-space: nowrap;
        }

        /* 表单区域 */
        .form-wrapper {
            max-width: 600px;
            margin: 0 auto;
            background: #fff;
            padding: 40px;
            border-radius: 24px;
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.04);
            border: 1px solid var(--border-color);
        }

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

        .form-group label {
            display: block;
            font-weight: 700;
            margin-bottom: 8px;
            font-size: 14px;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid var(--border-color);
            border-radius: 12px;
            font-size: 14px;
            background-color: var(--bg-light);
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--secondary-candy);
            background-color: #fff;
        }

        select.form-control {
            appearance: none;
            background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231d1d1f' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 16px center;
            background-size: 16px;
        }

        .btn-submit {
            width: 100%;
            padding: 14px;
            border: none;
            border-radius: 12px;
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--primary-candy) 0%, #ff4f73 100%);
            cursor: pointer;
            box-shadow: 0 6px 20px rgba(255, 107, 139, 0.3);
            transition: var(--transition);
        }

        .btn-submit:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(255, 107, 139, 0.4);
        }

        /* 侧边浮动客服 */
        .floating-contact {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .float-btn {
            width: 54px;
            height: 54px;
            border-radius: 50%;
            background-color: #fff;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
            position: relative;
            border: 2px solid var(--border-color);
        }

        .float-btn:hover {
            transform: translateY(-4px);
            border-color: var(--primary-candy);
        }

        .float-btn svg {
            width: 24px;
            height: 24px;
            fill: var(--text-dark);
        }

        .float-btn:hover svg {
            fill: var(--primary-candy);
        }

        .qr-popover {
            position: absolute;
            bottom: 65px;
            right: 0;
            background: #fff;
            padding: 16px;
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
            border: 1px solid var(--border-color);
            display: none;
            text-align: center;
            width: 160px;
        }

        .qr-popover img {
            width: 120px;
            height: 120px;
            object-fit: cover;
            border-radius: 8px;
            margin-bottom: 8px;
        }

        .qr-popover span {
            font-size: 12px;
            color: var(--text-dark);
            font-weight: 700;
        }

        .float-btn:hover .qr-popover {
            display: block;
        }

        /* 页脚区域 */
        footer {
            background-color: var(--text-dark);
            color: #e5e5e7;
            padding: 60px 0 30px 0;
            margin-top: 80px;
            border-top: 1px solid rgba(255,255,255,0.1);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-logo img {
            height: 36px;
            margin-bottom: 16px;
        }

        .footer-info {
            font-size: 13px;
            line-height: 1.8;
            color: #aeaeb2;
        }

        .footer-links h4 {
            font-size: 16px;
            color: #fff;
            margin-bottom: 20px;
            font-weight: 700;
        }

        .footer-links ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links a {
            color: #aeaeb2;
            font-size: 13px;
        }

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

        .friend-links {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding: 24px 0;
            margin-bottom: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            align-items: center;
        }

        .friend-links span {
            font-size: 13px;
            font-weight: 700;
            color: #fff;
        }

        .friend-links a {
            font-size: 13px;
            color: #aeaeb2;
        }

        .friend-links a:hover {
            color: var(--secondary-candy);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            font-size: 12px;
            color: #8e8e93;
        }

        /* 响应式调整 */
        @media (max-width: 991px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: #fff;
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
            }

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

            .menu-toggle {
                display: flex;
            }

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

            .step-node {
                min-width: 100%;
                margin-bottom: 40px;
            }
        }