/* 缤纷糖果亮色风核心变量 */
        :root {
            --primary: #FF5E7E; /* 甜蜜粉红 */
            --primary-light: #FF8EA4;
            --secondary: #4D96FF; /* 马卡龙蓝 */
            --secondary-light: #80B3FF;
            --accent: #6BCB77; /* 薄荷绿 */
            --warning: #FFD93D; /* 柠檬黄 */
            --warning-dark: #E2B700;
            --dark: #2C3E50; /* 深灰蓝，保证文本高可读性 */
            --dark-sub: #546E7A;
            --light: #F9F9FC; /* 极浅灰蓝底色 */
            --white: #FFFFFF;
            --candy-bg-gradient: linear-gradient(135deg, #FFF5F7 0%, #F0F5FF 100%);
            --header-height: 80px;
            --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
            --border-radius: 20px;
            --shadow: 0 10px 30px rgba(77, 150, 255, 0.08);
            --shadow-hover: 0 15px 35px rgba(255, 94, 126, 0.15);
        }

        /* 重置与基本样式 */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans CJK SC", sans-serif;
            color: var(--dark);
            background-color: var(--light);
        }

        body {
            line-height: 1.6;
            overflow-x: hidden;
        }

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

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

        img {
            max-width: 100%;
            height: auto;
            vertical-align: middle;
        }

        ul {
            list-style: none;
        }

        /* 布局容器 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 按钮设计 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 32px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 16px;
            cursor: pointer;
            transition: var(--transition);
            border: none;
            outline: none;
            gap: 8px;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary) 0%, #FF8EA4 100%);
            color: var(--white);
            box-shadow: 0 4px 15px rgba(255, 94, 126, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(255, 94, 126, 0.4);
            color: var(--white);
        }

        .btn-secondary {
            background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-light) 100%);
            color: var(--white);
            box-shadow: 0 4px 15px rgba(77, 150, 255, 0.3);
        }

        .btn-secondary:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(77, 150, 255, 0.4);
            color: var(--white);
        }

        .btn-outline {
            background: transparent;
            color: var(--dark);
            border: 2px solid var(--secondary);
        }

        .btn-outline:hover {
            background-color: var(--secondary);
            color: var(--white);
            transform: translateY(-3px);
        }

        /* 顶部导航 */
        .header {
            height: var(--header-height);
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            border-bottom: 2px solid #F0F2F6;
            box-shadow: 0 4px 20px rgba(0,0,0,0.02);
            transition: var(--transition);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo-box {
            display: flex;
            align-items: center;
            height: 100%;
        }

        .ai-page-logo {
            max-height: 48px;
            width: auto;
        }

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

        .nav-link {
            color: var(--dark);
            font-weight: 600;
            font-size: 15px;
            padding: 8px 12px;
            border-radius: 10px;
            transition: var(--transition);
        }

        .nav-link:hover {
            background-color: rgba(77, 150, 255, 0.1);
            color: var(--secondary);
        }

        .nav-link.active {
            color: var(--primary);
        }

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

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 6px;
            cursor: pointer;
            border: none;
            background: transparent;
        }

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

        /* 移动端菜单激活样式 */
        .menu-toggle.open span:nth-child(1) {
            transform: translateY(9px) rotate(45deg);
        }
        .menu-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .menu-toggle.open span:nth-child(3) {
            transform: translateY(-9px) rotate(-45deg);
        }

        /* 首屏 Hero (无图，纯CSS渐变及糖果色块) */
        .hero {
            padding-top: calc(var(--header-height) + 60px);
            padding-bottom: 80px;
            background: var(--candy-bg-gradient);
            position: relative;
            overflow: hidden;
            display: flex;
            align-items: center;
        }

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

        .shape {
            position: absolute;
            border-radius: 50%;
            filter: blur(50px);
            opacity: 0.5;
            animation: bubble 10s infinite alternate;
        }

        .shape-1 {
            width: 300px;
            height: 300px;
            background-color: rgba(255, 94, 126, 0.3);
            top: -50px;
            right: -50px;
            animation-delay: 0s;
        }

        .shape-2 {
            width: 400px;
            height: 400px;
            background-color: rgba(77, 150, 255, 0.25);
            bottom: -100px;
            left: -50px;
            animation-delay: 2s;
        }

        .shape-3 {
            width: 200px;
            height: 200px;
            background-color: rgba(255, 217, 61, 0.3);
            top: 40%;
            left: 45%;
            animation-delay: 4s;
        }

        @keyframes bubble {
            0% { transform: translateY(0) scale(1); }
            100% { transform: translateY(-30px) scale(1.1); }
        }

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

        .hero-badge {
            display: inline-block;
            background-color: var(--white);
            border: 2px solid var(--primary);
            color: var(--primary);
            font-weight: 700;
            padding: 8px 24px;
            border-radius: 30px;
            margin-bottom: 24px;
            font-size: 14px;
            letter-spacing: 1px;
            box-shadow: 0 4px 10px rgba(255, 94, 126, 0.1);
        }

        .hero-title {
            font-size: 44px;
            font-weight: 850;
            color: var(--dark);
            line-height: 1.3;
            margin-bottom: 24px;
        }

        .hero-title span {
            color: var(--primary);
            position: relative;
            z-index: 1;
        }

        .hero-title span::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 0;
            width: 100%;
            height: 12px;
            background-color: rgba(255, 217, 61, 0.4);
            z-index: -1;
            border-radius: 6px;
        }

        .hero-desc {
            font-size: 18px;
            color: var(--dark-sub);
            margin-bottom: 40px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 48px;
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .stat-card {
            background-color: var(--white);
            border-radius: var(--border-radius);
            padding: 24px 16px;
            box-shadow: var(--shadow);
            text-align: center;
            border: 2px solid transparent;
            transition: var(--transition);
        }

        .stat-card:hover {
            border-color: var(--secondary-light);
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }

        .stat-number {
            font-size: 36px;
            font-weight: 800;
            color: var(--secondary);
            margin-bottom: 8px;
            font-family: 'Arial Black', Gadget, sans-serif;
        }

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

        /* 通用Section */
        .section {
            padding: 90px 0;
            position: relative;
        }

        .section-light {
            background-color: var(--white);
        }

        .section-candy {
            background: var(--candy-bg-gradient);
        }

        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 60px auto;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 16px;
            position: relative;
            display: inline-block;
        }

        .section-title::after {
            content: '';
            display: block;
            width: 60px;
            height: 6px;
            background-color: var(--primary);
            border-radius: 3px;
            margin: 12px auto 0 auto;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--dark-sub);
        }

        /* 关于我们与软件介绍 */
        .about-wrap {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            align-items: center;
        }

        .about-content {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .about-text {
            font-size: 16px;
            color: var(--dark-sub);
            line-height: 1.8;
        }

        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 10px;
        }

        .about-feature-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
        }

        .about-feature-icon {
            width: 24px;
            height: 24px;
            background-color: rgba(107, 203, 119, 0.15);
            color: var(--accent);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-weight: bold;
            font-size: 14px;
        }

        .about-feature-text h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 4px;
        }

        .about-feature-text p {
            font-size: 13px;
            color: var(--dark-sub);
        }

        .about-card-box {
            background-color: var(--white);
            border-radius: var(--border-radius);
            padding: 40px;
            box-shadow: var(--shadow);
            border: 2px dashed rgba(77, 150, 255, 0.2);
            position: relative;
        }

        .about-card-box::before {
            content: '';
            position: absolute;
            top: -10px;
            left: -10px;
            width: 30px;
            height: 30px;
            border-top: 4px solid var(--primary);
            border-left: 4px solid var(--primary);
            border-top-left-radius: 10px;
        }

        .about-card-box::after {
            content: '';
            position: absolute;
            bottom: -10px;
            right: -10px;
            width: 30px;
            height: 30px;
            border-bottom: 4px solid var(--secondary);
            border-right: 4px solid var(--secondary);
            border-bottom-right-radius: 10px;
        }

        /* 平台服务体系与大模型云 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background-color: var(--white);
            border-radius: var(--border-radius);
            padding: 36px 24px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border-top: 6px solid var(--secondary);
        }

        .service-card:nth-child(2n) {
            border-top-color: var(--primary);
        }

        .service-card:nth-child(3n) {
            border-top-color: var(--accent);
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
        }

        .service-icon {
            font-size: 32px;
            margin-bottom: 20px;
            display: inline-block;
        }

        .service-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 12px;
        }

        .service-desc {
            font-size: 14px;
            color: var(--dark-sub);
            margin-bottom: 16px;
        }

        .service-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .service-tag {
            background-color: rgba(77, 150, 255, 0.08);
            color: var(--secondary);
            font-size: 12px;
            padding: 4px 10px;
            border-radius: 12px;
            font-weight: 600;
        }

        .service-card:nth-child(2n) .service-tag {
            background-color: rgba(255, 94, 126, 0.08);
            color: var(--primary);
        }

        /* 标签云 - 聚合大模型 */
        .cloud-wrap {
            margin-top: 50px;
            background-color: rgba(255,255,255,0.7);
            border-radius: var(--border-radius);
            padding: 30px;
            text-align: center;
            border: 2px solid #F0F2F6;
        }

        .cloud-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--dark-sub);
            margin-bottom: 20px;
        }

        .cloud-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }

        .cloud-tag {
            background-color: var(--white);
            color: var(--dark);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            box-shadow: 0 2px 6px rgba(0,0,0,0.02);
            border: 1px solid #ECEFF1;
            transition: var(--transition);
        }

        .cloud-tag:hover {
            background-color: var(--secondary);
            color: var(--white);
            transform: scale(1.05);
            border-color: var(--secondary);
        }

        /* 流程步骤：时间线 & 流程图 */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .process-step {
            background-color: var(--white);
            border-radius: var(--border-radius);
            padding: 30px 20px;
            box-shadow: var(--shadow);
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .process-num {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-light) 100%);
            color: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: bold;
            margin: 0 auto 20px auto;
        }

        .process-step:nth-child(2n) .process-num {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
        }

        .process-step:nth-child(3n) .process-num {
            background: linear-gradient(135deg, var(--accent) 0%, #A2E8B0 100%);
        }

        .process-step:nth-child(4n) .process-num {
            background: linear-gradient(135deg, var(--warning) 0%, #FFE57F 100%);
            color: var(--dark);
        }

        .process-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 12px;
        }

        .process-desc {
            font-size: 13px;
            color: var(--dark-sub);
        }

        /* 全国服务网络 & 解决方案 */
        .solution-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: center;
        }

        .solution-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .solution-item {
            background-color: var(--white);
            border-radius: var(--border-radius);
            padding: 24px;
            box-shadow: var(--shadow);
            display: flex;
            gap: 20px;
            transition: var(--transition);
        }

        .solution-item:hover {
            transform: translateX(8px);
            box-shadow: var(--shadow-hover);
        }

        .solution-icon {
            font-size: 32px;
            flex-shrink: 0;
        }

        .solution-info h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .solution-info p {
            font-size: 14px;
            color: var(--dark-sub);
        }

        .network-box {
            background: linear-gradient(135deg, var(--secondary) 0%, #68B0FF 100%);
            border-radius: var(--border-radius);
            padding: 40px;
            color: var(--white);
            box-shadow: var(--shadow);
        }

        .network-title {
            font-size: 24px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .network-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .network-item {
            display: flex;
            align-items: center;
            gap: 12px;
            background-color: rgba(255, 255, 255, 0.15);
            padding: 12px 18px;
            border-radius: 12px;
        }

        /* 案例中心 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .case-card {
            background-color: var(--white);
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .case-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
        }

        .case-img-box {
            height: 220px;
            overflow: hidden;
            position: relative;
            background-color: #EEE;
        }

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

        .case-card:hover .case-img-box img {
            transform: scale(1.08);
        }

        .case-info {
            padding: 24px;
        }

        .case-tag {
            display: inline-block;
            background-color: rgba(255, 94, 126, 0.1);
            color: var(--primary);
            font-size: 12px;
            padding: 4px 12px;
            border-radius: 12px;
            font-weight: bold;
            margin-bottom: 12px;
        }

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

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

        /* 对比评测表格与Token比价 */
        .compare-wrap {
            background-color: var(--white);
            border-radius: var(--border-radius);
            padding: 40px;
            box-shadow: var(--shadow);
            border: 2px solid #F0F2F6;
        }

        .compare-header-box {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 30px;
            flex-wrap: wrap;
            gap: 20px;
        }

        .rating-box {
            background: linear-gradient(135deg, var(--warning) 0%, #FFC107 100%);
            color: var(--dark);
            padding: 12px 24px;
            border-radius: 15px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .rating-score {
            font-size: 28px;
            font-weight: 900;
        }

        .rating-text {
            font-size: 14px;
            font-weight: 700;
            line-height: 1.2;
        }

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

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

        .compare-table th, .compare-table td {
            padding: 16px 20px;
            border-bottom: 1px solid #ECEFF1;
        }

        .compare-table th {
            font-weight: 700;
            color: var(--dark);
            background-color: rgba(77, 150, 255, 0.05);
        }

        .compare-table td {
            font-size: 14px;
            color: var(--dark-sub);
        }

        .compare-table tr:hover {
            background-color: rgba(255, 94, 126, 0.02);
        }

        .highlight-col {
            background-color: rgba(255, 94, 126, 0.04);
            font-weight: 700;
            color: var(--primary) !important;
        }

        /* 培训板块 (职业技术培训与人工智能培训) */
        .train-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .train-card {
            background-color: var(--white);
            border-radius: var(--border-radius);
            padding: 30px;
            box-shadow: var(--shadow);
            border: 2px solid transparent;
            transition: var(--transition);
        }

        .train-card:hover {
            border-color: var(--accent);
            transform: translateY(-5px);
        }

        .train-badge {
            background-color: rgba(107, 203, 119, 0.15);
            color: var(--accent);
            padding: 4px 12px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 700;
            display: inline-block;
            margin-bottom: 16px;
        }

        .train-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 12px;
        }

        .train-meta {
            font-size: 13px;
            color: var(--dark-sub);
            margin-bottom: 16px;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .train-meta span::before {
            content: "✓ ";
            color: var(--accent);
            font-weight: bold;
        }

        /* 术语百科与排查 */
        .wiki-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .wiki-card {
            background-color: var(--white);
            border-radius: var(--border-radius);
            padding: 24px;
            box-shadow: var(--shadow);
        }

        .wiki-term {
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .wiki-term::before {
            content: "";
            width: 8px;
            height: 8px;
            background-color: var(--secondary);
            border-radius: 50%;
        }

        .wiki-def {
            font-size: 13px;
            color: var(--dark-sub);
        }

        /* 客户评论 */
        .review-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .review-card {
            background-color: var(--white);
            border-radius: var(--border-radius);
            padding: 30px;
            box-shadow: var(--shadow);
            position: relative;
        }

        .review-quote {
            font-size: 14px;
            color: var(--dark-sub);
            margin-bottom: 24px;
            line-height: 1.7;
        }

        .review-user {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .review-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background-color: var(--secondary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            color: var(--white);
        }

        .review-info h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--dark);
        }

        .review-info p {
            font-size: 12px;
            color: var(--dark-sub);
        }

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

        details {
            background-color: var(--white);
            border-radius: 12px;
            box-shadow: var(--shadow);
            border: 2px solid transparent;
            transition: var(--transition);
        }

        details[open] {
            border-color: var(--secondary-light);
        }

        summary {
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            outline: none;
        }

        summary::-webkit-details-marker {
            display: none;
        }

        summary::after {
            content: "+";
            font-size: 20px;
            color: var(--secondary);
            font-weight: bold;
        }

        details[open] summary::after {
            content: "−";
        }

        .faq-answer {
            padding: 0 24px 24px 24px;
            font-size: 14px;
            color: var(--dark-sub);
            line-height: 1.6;
        }

        /* 文章知识库 */
        .article-wrap {
            background-color: var(--white);
            border-radius: var(--border-radius);
            padding: 40px;
            box-shadow: var(--shadow);
        }

        .article-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .article-item {
            padding: 16px;
            border-radius: 12px;
            border: 1px solid #ECEFF1;
            transition: var(--transition);
        }

        .article-item:hover {
            border-color: var(--primary);
            background-color: rgba(255, 94, 126, 0.01);
        }

        .article-link {
            font-size: 15px;
            font-weight: 700;
            color: var(--dark);
            display: block;
            margin-bottom: 8px;
        }

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

        .article-meta {
            font-size: 12px;
            color: var(--dark-sub);
        }

        /* 表单与需求匹配区 */
        .form-wrap {
            background-color: var(--white);
            border-radius: var(--border-radius);
            padding: 40px;
            box-shadow: var(--shadow);
            border: 2px solid #F0F2F6;
        }

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

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

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

        .form-label {
            font-size: 14px;
            font-weight: 700;
            color: var(--dark);
        }

        .form-input, .form-select, .form-textarea {
            padding: 12px 16px;
            border-radius: 10px;
            border: 2px solid #E0E0E0;
            outline: none;
            font-family: inherit;
            font-size: 14px;
            transition: var(--transition);
        }

        .form-input:focus, .form-select:focus, .form-textarea:focus {
            border-color: var(--secondary);
            box-shadow: 0 0 8px rgba(77, 150, 255, 0.2);
        }

        /* 联系方式与页脚 */
        .footer {
            background-color: #1A252F; /* 保证文字对比度的深色底 */
            color: #ECEFF1;
            padding: 60px 0 30px 0;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.2fr 1.8fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-logo-area {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .footer-contact {
            margin-top: 10px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-right {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 16px;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col a {
            color: #CFD8DC;
            transition: var(--transition);
        }

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

        .footer-qrcode {
            width: 100px;
            height: 100px;
            background-color: var(--white);
            padding: 8px;
            border-radius: 8px;
            margin-top: 10px;
        }

        .footer-bottom {
            border-top: 1px solid #2C3E50;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 12px;
            color: #90A4AE;
        }

        .footer-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-links a {
            color: #90A4AE;
        }

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

        /* 悬浮客服面板 */
        .fixed-panel {
            position: fixed;
            right: 20px;
            bottom: 100px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .fixed-btn {
            width: 50px;
            height: 50px;
            background-color: var(--white);
            border-radius: 50%;
            box-shadow: 0 4px 15px rgba(0,0,0,0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
            position: relative;
        }

        .fixed-btn:hover {
            background-color: var(--primary);
            color: var(--white);
            transform: scale(1.1);
        }

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

        .kefu-popover {
            position: absolute;
            right: 60px;
            bottom: 0;
            background-color: var(--white);
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
            padding: 16px;
            text-align: center;
            display: none;
            width: 160px;
            border: 2px solid var(--primary-light);
        }

        .kefu-popover img {
            width: 120px;
            height: 120px;
            margin-bottom: 8px;
        }

        .kefu-popover p {
            font-size: 12px;
            color: var(--dark);
            font-weight: 700;
        }

        .fixed-btn:hover .kefu-popover {
            display: block;
        }

        /* 响应式适配 */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-grid, .process-steps, .train-grid, .review-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .about-wrap, .solution-grid, .footer-grid {
                grid-template-columns: 1fr;
            }
            .case-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
            }

            .nav-menu {
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background-color: var(--white);
                flex-direction: column;
                padding: 20px;
                gap: 16px;
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
                border-top: 1px solid #ECEFF1;
                display: none;
            }

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

            .nav-actions {
                display: none;
            }

            .hero-title {
                font-size: 32px;
            }

            .service-grid, .process-steps, .train-grid, .review-grid, .case-grid, .wiki-grid, .article-list {
                grid-template-columns: 1fr;
            }

            .form-grid {
                grid-template-columns: 1fr;
            }

            .form-group-full {
                grid-column: span 1;
            }

            .footer-right {
                grid-template-columns: 1fr;
            }
        }