/* CSS Reset & Variable Design (Neo-brutalism / 多彩涂鸦风) */
        :root {
            --bg-color: #faf8f5;
            --text-color: #1a1a1a;
            --border-color: #000000;
            --primary-yellow: #ffe600;
            --primary-pink: #ff477e;
            --primary-blue: #00d2ff;
            --primary-green: #39ff14;
            --card-bg: #ffffff;
            --transition-speed: 0.3s;
            --container-max-width: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--bg-color);
            color: var(--text-color);
            line-height: 1.6;
        }

        body {
            overflow-x: hidden;
        }

        /* 统一容器类 */
        .container {
            width: 100%;
            max-width: var(--container-max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 涂鸦风公共样式 */
        .brutal-card {
            background: var(--card-bg);
            border: 3px solid var(--border-color);
            border-radius: 16px;
            box-shadow: 6px 6px 0px var(--border-color);
            transition: all var(--transition-speed) cubic-bezier(0.175, 0.885, 0.32, 1.275);
            padding: 24px;
        }

        .brutal-card:hover {
            transform: translate(-4px, -4px);
            box-shadow: 10px 10px 0px var(--border-color);
        }

        .brutal-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-weight: bold;
            font-size: 16px;
            text-decoration: none;
            color: var(--text-color);
            border: 3px solid var(--border-color);
            border-radius: 12px;
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .brutal-btn-yellow {
            background-color: var(--primary-yellow);
            box-shadow: 4px 4px 0px var(--border-color);
        }
        .brutal-btn-yellow:hover {
            transform: translate(-2px, -2px);
            box-shadow: 6px 6px 0px var(--border-color);
        }
        .brutal-btn-yellow:active {
            transform: translate(2px, 2px);
            box-shadow: 2px 2px 0px var(--border-color);
        }

        .brutal-btn-pink {
            background-color: var(--primary-pink);
            color: #fff;
            box-shadow: 4px 4px 0px var(--border-color);
        }
        .brutal-btn-pink:hover {
            transform: translate(-2px, -2px);
            box-shadow: 6px 6px 0px var(--border-color);
        }

        /* Section Heading */
        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }

        .section-tag {
            display: inline-block;
            padding: 6px 16px;
            font-weight: 800;
            text-transform: uppercase;
            border: 2px solid var(--border-color);
            border-radius: 30px;
            margin-bottom: 16px;
            font-size: 14px;
            background-color: var(--primary-green);
        }

        .section-title {
            font-size: 36px;
            font-weight: 900;
            color: var(--text-color);
            position: relative;
            display: inline-block;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 5%;
            width: 90%;
            height: 10px;
            background: repeating-linear-gradient(
                45deg,
                var(--primary-yellow),
                var(--primary-yellow) 10px,
                var(--border-color) 10px,
                var(--border-color) 20px
            );
            z-index: -1;
        }

        /* 顶部导航 */
        header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: var(--bg-color);
            border-bottom: 3px solid var(--border-color);
            padding: 16px 0;
        }

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

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

        .ai-page-logo {
            height: 48px;
            object-fit: contain;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 950;
            letter-spacing: -0.5px;
        }

        .logo-text span {
            background-color: var(--primary-yellow);
            padding: 2px 6px;
            border: 2px solid var(--border-color);
            border-radius: 4px;
            margin-left: 4px;
        }

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

        nav.nav-menu a {
            text-decoration: none;
            color: var(--text-color);
            font-weight: 700;
            font-size: 14px;
            padding: 6px 12px;
            border-radius: 8px;
            transition: background-color 0.2s;
        }

        nav.nav-menu a:hover {
            background-color: var(--primary-yellow);
            outline: 2px solid var(--border-color);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 6px;
            background: none;
            border: none;
            cursor: pointer;
            z-index: 1100;
        }

        .menu-toggle span {
            display: block;
            width: 28px;
            height: 4px;
            background-color: var(--border-color);
            border-radius: 2px;
            transition: 0.3s;
        }

        /* Hero 首屏 (无图片) */
        .hero-section {
            padding: 80px 0;
            position: relative;
            background: radial-gradient(circle at 80% 20%, rgba(0, 210, 255, 0.15) 0%, transparent 50%),
                        radial-gradient(circle at 20% 80%, rgba(255, 71, 126, 0.15) 0%, transparent 50%);
            border-bottom: 3px solid var(--border-color);
            overflow: hidden;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 48px;
            align-items: center;
        }

        .hero-content {
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background-color: #fff;
            border: 2px solid var(--border-color);
            padding: 6px 14px;
            border-radius: 30px;
            font-weight: 700;
            margin-bottom: 24px;
            box-shadow: 3px 3px 0 var(--border-color);
        }

        .hero-badge .dot {
            width: 10px;
            height: 10px;
            background-color: var(--primary-green);
            border-radius: 50%;
            border: 1px solid var(--border-color);
        }

        h1.hero-title {
            font-size: 48px;
            font-weight: 950;
            line-height: 1.15;
            margin-bottom: 24px;
            color: var(--text-color);
        }

        h1.hero-title span.highlight {
            background-color: var(--primary-yellow);
            padding: 0 8px;
            border: 3px solid var(--border-color);
            display: inline-block;
            transform: rotate(-1.5deg);
            box-shadow: 4px 4px 0 var(--border-color);
            margin: 4px 0;
        }

        .hero-desc {
            font-size: 18px;
            margin-bottom: 36px;
            color: #4a4a4a;
            max-width: 600px;
        }

        .hero-btns {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }

        .hero-features-list {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
        }

        .hero-feature-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 14px;
        }

        .hero-feature-item svg {
            color: var(--primary-pink);
            flex-shrink: 0;
        }

        /* 右侧纯 CSS 科技感创意卡片组合 */
        .hero-visual {
            position: relative;
            height: 400px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .visual-box {
            width: 280px;
            height: 280px;
            background-color: var(--primary-blue);
            border: 3px solid var(--border-color);
            border-radius: 24px;
            box-shadow: 8px 8px 0 var(--border-color);
            position: relative;
            transform: rotate(-3deg);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            padding: 20px;
        }

        .visual-box-inner {
            width: 100%;
            height: 100%;
            border: 2px dashed var(--border-color);
            border-radius: 16px;
            padding: 16px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            background-color: rgba(255,255,255,0.9);
        }

        .visual-dots {
            display: flex;
            gap: 6px;
        }

        .visual-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            border: 2px solid var(--border-color);
        }

        .visual-dot:nth-child(1) { background-color: var(--primary-pink); }
        .visual-dot:nth-child(2) { background-color: var(--primary-yellow); }
        .visual-dot:nth-child(3) { background-color: var(--primary-green); }

        .visual-code {
            font-family: monospace;
            font-size: 12px;
            font-weight: 700;
            color: #333;
        }

        .visual-card-float {
            position: absolute;
            background-color: var(--primary-yellow);
            border: 3px solid var(--border-color);
            padding: 12px 18px;
            border-radius: 12px;
            font-weight: 900;
            font-size: 14px;
            box-shadow: 4px 4px 0 var(--border-color);
        }

        .v-card-1 {
            top: 20px;
            left: -20px;
            transform: rotate(6deg);
            background-color: var(--primary-pink);
            color: white;
        }

        .v-card-2 {
            bottom: 40px;
            right: -20px;
            transform: rotate(-8deg);
            background-color: var(--primary-green);
        }

        .v-card-3 {
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%) rotate(12deg);
            white-space: nowrap;
            background-color: #fff;
        }

        /* 数据指标卡片 */
        .stats-section {
            padding: 40px 0;
            background-color: #fff;
            border-bottom: 3px solid var(--border-color);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 24px;
        }

        .stat-card {
            text-align: center;
            background-color: var(--bg-color);
            border: 3px solid var(--border-color);
            border-radius: 16px;
            padding: 24px;
            box-shadow: 4px 4px 0 var(--border-color);
        }

        .stat-value {
            font-size: 40px;
            font-weight: 950;
            line-height: 1.1;
            margin-bottom: 8px;
            color: var(--text-color);
        }

        .stat-label {
            font-size: 14px;
            font-weight: 700;
            color: #666;
        }

        /* 平台介绍 & 关于我们 */
        .about-section {
            padding: 100px 0;
            border-bottom: 3px solid var(--border-color);
        }

        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .about-info h3 {
            font-size: 28px;
            font-weight: 900;
            margin-bottom: 20px;
        }

        .about-info p {
            margin-bottom: 16px;
            color: #4a4a4a;
            font-size: 16px;
        }

        .about-feature-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 30px;
        }

        .about-feature-box {
            border: 2px solid var(--border-color);
            border-radius: 12px;
            padding: 16px;
            background-color: #fff;
        }

        .about-feature-box h4 {
            font-size: 16px;
            font-weight: 800;
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .about-feature-box p {
            font-size: 13px;
            margin-bottom: 0;
            color: #666;
        }

        .about-visual-area {
            position: relative;
        }

        .about-img-frame {
            border: 3px solid var(--border-color);
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 8px 8px 0 var(--border-color);
            background-color: #fff;
            padding: 12px;
        }

        .about-img-frame img {
            width: 100%;
            height: auto;
            border-radius: 12px;
            border: 2px solid var(--border-color);
            display: block;
        }

        .about-badge-float {
            position: absolute;
            bottom: -20px;
            left: -20px;
            background-color: var(--primary-pink);
            color: #fff;
            border: 3px solid var(--border-color);
            padding: 12px 24px;
            border-radius: 12px;
            font-weight: 900;
            transform: rotate(-4deg);
            box-shadow: 4px 4px 0 var(--border-color);
        }

        /* 全平台AIGC服务 & 支持模型 */
        .services-section {
            padding: 100px 0;
            background-color: #f0f8ff;
            border-bottom: 3px solid var(--border-color);
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
            margin-bottom: 60px;
        }

        .service-card {
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .service-icon {
            width: 50px;
            height: 50px;
            border-radius: 12px;
            border: 2px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 20px;
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 20px;
            font-weight: 900;
            margin-bottom: 12px;
        }

        .service-card p {
            font-size: 14px;
            color: #555;
            flex-grow: 1;
            margin-bottom: 20px;
        }

        .service-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }

        .service-tag-item {
            font-size: 11px;
            font-weight: 700;
            padding: 2px 8px;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            background-color: #fff;
        }

        /* 支持AI模型云 */
        .model-cloud-wrapper {
            background-color: #fff;
            border: 3px solid var(--border-color);
            border-radius: 16px;
            padding: 30px;
            box-shadow: 6px 6px 0 var(--border-color);
        }

        .model-cloud-title {
            font-size: 18px;
            font-weight: 900;
            margin-bottom: 20px;
            text-align: center;
        }

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

        .model-cloud-tag {
            font-size: 13px;
            font-weight: 700;
            padding: 6px 14px;
            border: 2px solid var(--border-color);
            border-radius: 8px;
            background-color: var(--bg-color);
            transition: all 0.2s;
        }

        .model-cloud-tag:hover {
            transform: scale(1.08) rotate(2deg);
            background-color: var(--primary-yellow);
        }

        /* 一站式AIGC制作 & 解决方案 */
        .solutions-section {
            padding: 100px 0;
            border-bottom: 3px solid var(--border-color);
        }

        .solution-tabs-nav {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }

        .solution-tab-btn {
            padding: 10px 24px;
            font-weight: 800;
            border: 2px solid var(--border-color);
            border-radius: 10px;
            background-color: #fff;
            cursor: pointer;
            box-shadow: 3px 3px 0 var(--border-color);
            transition: all 0.2s;
        }

        .solution-tab-btn.active, .solution-tab-btn:hover {
            background-color: var(--primary-pink);
            color: white;
            transform: translate(-2px, -2px);
            box-shadow: 5px 5px 0 var(--border-color);
        }

        .solution-tab-content {
            display: none;
        }

        .solution-tab-content.active {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 40px;
            align-items: center;
        }

        .solution-detail h3 {
            font-size: 26px;
            font-weight: 900;
            margin-bottom: 16px;
        }

        .solution-detail p {
            color: #4a4a4a;
            margin-bottom: 24px;
        }

        .solution-features {
            list-style: none;
            margin-bottom: 24px;
        }

        .solution-features li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 12px;
            font-weight: 700;
        }

        .solution-features li::before {
            content: "✓";
            position: absolute;
            left: 0;
            top: 0;
            width: 20px;
            height: 20px;
            background-color: var(--primary-green);
            border: 2px solid var(--border-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 10px;
            font-weight: 950;
        }

        .solution-image-container {
            border: 3px solid var(--border-color);
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 6px 6px 0 var(--border-color);
            background-color: #fff;
            padding: 10px;
        }

        .solution-image-container img {
            width: 100%;
            height: auto;
            border-radius: 10px;
            border: 2px solid var(--border-color);
            display: block;
        }

        /* 全国服务网络 & 流程步骤 */
        .network-section {
            padding: 100px 0;
            background-color: #fffaf0;
            border-bottom: 3px solid var(--border-color);
        }

        .network-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

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

        .network-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            border: 2px solid var(--border-color);
            border-radius: 12px;
            padding: 16px;
            background-color: #fff;
            box-shadow: 3px 3px 0 var(--border-color);
        }

        .network-item .city-tag {
            background-color: var(--primary-blue);
            color: #000;
            font-weight: 900;
            padding: 4px 8px;
            border: 2px solid var(--border-color);
            border-radius: 6px;
            font-size: 12px;
        }

        /* 流程步骤时间线 */
        .process-container {
            margin-top: 60px;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
            position: relative;
        }

        .process-step {
            position: relative;
        }

        .step-num {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: 3px solid var(--border-color);
            background-color: var(--primary-yellow);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 950;
            font-size: 18px;
            margin-bottom: 16px;
            box-shadow: 3px 3px 0 var(--border-color);
        }

        .process-step h4 {
            font-size: 18px;
            font-weight: 900;
            margin-bottom: 8px;
        }

        .process-step p {
            font-size: 13px;
            color: #666;
        }

        /* 技术标准 */
        .standards-section {
            padding: 100px 0;
            border-bottom: 3px solid var(--border-color);
        }

        .standards-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 30px;
        }

        .standard-card {
            border: 3px solid var(--border-color);
            border-radius: 16px;
            padding: 24px;
            background-color: #fff;
            box-shadow: 4px 4px 0 var(--border-color);
        }

        .standard-card h3 {
            font-size: 20px;
            font-weight: 900;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .standard-card h3::before {
            content: "";
            display: inline-block;
            width: 8px;
            height: 24px;
            background-color: var(--primary-pink);
            border: 1px solid var(--border-color);
        }

        .standard-card p {
            font-size: 14px;
            color: #555;
        }

        /* 客户案例中心 */
        .cases-section {
            padding: 100px 0;
            background-color: #fafafa;
            border-bottom: 3px solid var(--border-color);
        }

        .cases-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .case-card {
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .case-img-wrapper {
            border-radius: 10px;
            border: 2px solid var(--border-color);
            overflow: hidden;
            margin-bottom: 16px;
            aspect-ratio: 16/9;
            background-color: #eee;
        }

        .case-img-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .case-info {
            flex-grow: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .case-info h3 {
            font-size: 18px;
            font-weight: 900;
            margin-bottom: 8px;
        }

        .case-info p {
            font-size: 13px;
            color: #555;
            margin-bottom: 16px;
        }

        .case-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
            font-weight: 700;
        }

        /* 对比评测板块 */
        .comparison-section {
            padding: 100px 0;
            background-color: #fff;
            border-bottom: 3px solid var(--border-color);
        }

        .rating-box {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 30px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }

        .rating-num-card {
            border: 3px solid var(--border-color);
            background-color: var(--primary-yellow);
            padding: 24px;
            border-radius: 16px;
            text-align: center;
            box-shadow: 4px 4px 0 var(--border-color);
            min-width: 180px;
        }

        .rating-num-card .score {
            font-size: 56px;
            font-weight: 950;
            line-height: 1;
        }

        .rating-num-card .label {
            font-weight: 800;
            font-size: 14px;
            margin-top: 8px;
        }

        .rating-stars-card {
            border: 3px solid var(--border-color);
            background-color: #fff;
            padding: 24px;
            border-radius: 16px;
            box-shadow: 4px 4px 0 var(--border-color);
            text-align: center;
        }

        .stars-row {
            color: #ff9d00;
            font-size: 32px;
            font-weight: 900;
            margin-bottom: 6px;
        }

        .stars-label {
            font-weight: 800;
            font-size: 14px;
        }

        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border: 3px solid var(--border-color);
            border-radius: 16px;
            box-shadow: 6px 6px 0 var(--border-color);
            background-color: #fff;
        }

        table.comparison-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 800px;
        }

        table.comparison-table th, table.comparison-table td {
            padding: 16px 20px;
            border-bottom: 2px solid var(--border-color);
            font-weight: 700;
            font-size: 14px;
        }

        table.comparison-table th {
            background-color: var(--primary-blue);
            color: #000;
            font-weight: 900;
            text-transform: uppercase;
        }

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

        table.comparison-table td.highlight-col {
            background-color: rgba(255, 230, 0, 0.15);
        }

        .badge-status {
            padding: 4px 10px;
            border-radius: 6px;
            font-size: 12px;
            border: 1px solid var(--border-color);
            display: inline-block;
        }

        .status-yes {
            background-color: var(--primary-green);
        }

        .status-no {
            background-color: #eee;
        }

        /* Token比价参考 */
        .token-section {
            padding: 100px 0;
            background-color: #fcfaf2;
            border-bottom: 3px solid var(--border-color);
        }

        .token-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }

        .token-card {
            border: 3px solid var(--border-color);
            border-radius: 16px;
            padding: 24px;
            background-color: #fff;
            box-shadow: 4px 4px 0 var(--border-color);
            position: relative;
        }

        .token-card.popular::before {
            content: "全网低价";
            position: absolute;
            top: -12px;
            right: 20px;
            background-color: var(--primary-pink);
            color: white;
            font-size: 11px;
            font-weight: 800;
            padding: 4px 10px;
            border: 2px solid var(--border-color);
            border-radius: 6px;
        }

        .token-card h3 {
            font-size: 20px;
            font-weight: 900;
            margin-bottom: 12px;
        }

        .token-price {
            font-size: 28px;
            font-weight: 950;
            color: var(--primary-pink);
            margin-bottom: 16px;
        }

        .token-features {
            list-style: none;
            font-size: 13px;
            color: #666;
        }

        .token-features li {
            margin-bottom: 8px;
        }

        /* 职业技术与人工智能培训 */
        .training-section {
            padding: 100px 0;
            background-color: #fff;
            border-bottom: 3px solid var(--border-color);
        }

        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
        }

        .training-card {
            border: 3px solid var(--border-color);
            border-radius: 16px;
            padding: 24px;
            background-color: var(--bg-color);
            text-align: center;
            box-shadow: 4px 4px 0 var(--border-color);
        }

        .training-card .cert-badge {
            display: inline-block;
            font-size: 11px;
            font-weight: 800;
            background-color: var(--primary-blue);
            padding: 4px 8px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            margin-bottom: 12px;
        }

        .training-card h3 {
            font-size: 18px;
            font-weight: 900;
            margin-bottom: 12px;
        }

        .training-card p {
            font-size: 13px;
            color: #666;
        }

        /* 帮助中心 & FAQ折叠面板 & 自助排查 */
        .faq-section {
            padding: 100px 0;
            background-color: #f5f9f8;
            border-bottom: 3px solid var(--border-color);
        }

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

        .faq-wrapper {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            border: 2px solid var(--border-color);
            border-radius: 12px;
            background-color: #fff;
            overflow: hidden;
            box-shadow: 3px 3px 0 var(--border-color);
        }

        .faq-question {
            padding: 18px 24px;
            font-weight: 800;
            font-size: 15px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
            background-color: #fff;
        }

        .faq-question::after {
            content: "+";
            font-size: 20px;
            font-weight: 900;
            transition: transform 0.3s;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            border-top: 0px solid var(--border-color);
            background-color: var(--bg-color);
        }

        .faq-item.active .faq-answer {
            max-height: 500px;
            border-top: 2px solid var(--border-color);
        }

        .faq-answer-inner {
            padding: 18px 24px;
            font-size: 14px;
            color: #555;
        }

        /* 术语百科 & 自助排查 */
        .wiki-card {
            border: 3px solid var(--border-color);
            border-radius: 16px;
            padding: 24px;
            background-color: #fff;
            box-shadow: 4px 4px 0 var(--border-color);
            height: 100%;
        }

        .wiki-card h3 {
            font-size: 22px;
            font-weight: 900;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .wiki-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .wiki-item dt {
            font-weight: 800;
            color: var(--primary-pink);
            font-size: 14px;
        }

        .wiki-item dd {
            font-size: 13px;
            color: #666;
            margin-left: 0;
            margin-bottom: 8px;
        }

        /* 客户评论卡片 (6条) */
        .reviews-section {
            padding: 100px 0;
            background-color: #fff;
            border-bottom: 3px solid var(--border-color);
        }

        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .review-card {
            border: 3px solid var(--border-color);
            border-radius: 16px;
            padding: 24px;
            background-color: #fff;
            box-shadow: 4px 4px 0 var(--border-color);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .review-text {
            font-size: 14px;
            color: #4a4a4a;
            margin-bottom: 20px;
            font-style: italic;
            position: relative;
        }

        .review-text::before {
            content: "“";
            font-size: 40px;
            color: rgba(0,0,0,0.1);
            position: absolute;
            top: -20px;
            left: -10px;
            font-family: serif;
        }

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

        .user-avatar-placeholder {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            border: 2px solid var(--border-color);
            background-color: var(--primary-yellow);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 16px;
        }

        .review-user-info h4 {
            font-size: 14px;
            font-weight: 900;
        }

        .review-user-info p {
            font-size: 11px;
            color: #777;
        }

        /* 行业资讯 / 知识库 */
        .blog-section {
            padding: 100px 0;
            background-color: #f9f9f9;
            border-bottom: 3px solid var(--border-color);
        }

        .blog-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }

        .blog-card {
            background-color: #fff;
            border: 3px solid var(--border-color);
            border-radius: 16px;
            box-shadow: 4px 4px 0 var(--border-color);
            padding: 24px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            height: 100%;
        }

        .blog-card h3 {
            font-size: 18px;
            font-weight: 900;
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .blog-card p {
            font-size: 13px;
            color: #666;
            margin-bottom: 16px;
        }

        .blog-card .read-more {
            font-weight: 800;
            font-size: 13px;
            color: var(--text-color);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .blog-card .read-more:hover {
            color: var(--primary-pink);
        }

        /* 智能需求匹配与表单 */
        .form-section {
            padding: 100px 0;
            background-color: #fff;
            border-bottom: 3px solid var(--border-color);
        }

        .form-grid {
            display: grid;
            grid-template-columns: 0.9fr 1.1fr;
            gap: 60px;
            align-items: center;
        }

        .form-info h3 {
            font-size: 32px;
            font-weight: 950;
            margin-bottom: 20px;
        }

        .form-info p {
            color: #555;
            margin-bottom: 24px;
        }

        .form-container-card {
            border: 3px solid var(--border-color);
            border-radius: 16px;
            padding: 30px;
            background-color: var(--bg-color);
            box-shadow: 6px 6px 0 var(--border-color);
        }

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

        .form-group label {
            display: block;
            font-weight: 800;
            font-size: 14px;
            margin-bottom: 8px;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid var(--border-color);
            border-radius: 8px;
            font-size: 14px;
            background-color: #fff;
            color: var(--text-color);
            font-family: inherit;
        }

        .form-control:focus {
            outline: none;
            background-color: #fffdf5;
            box-shadow: 2px 2px 0 var(--border-color);
        }

        textarea.form-control {
            resize: vertical;
            min-height: 100px;
        }

        /* 页脚 & 友情链接 */
        footer {
            background-color: #1e1e1e;
            color: #f5f5f5;
            padding: 80px 0 40px;
            border-top: 3px solid var(--border-color);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 40px;
            margin-bottom: 60px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 900;
            margin-bottom: 24px;
            position: relative;
            display: inline-block;
            color: #fff;
        }

        .footer-col h4::after {
            content: "";
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 30px;
            height: 3px;
            background-color: var(--primary-yellow);
        }

        .footer-col p {
            font-size: 13px;
            color: #ccc;
            margin-bottom: 12px;
        }

        .footer-links {
            list-style: none;
        }

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

        .footer-links a {
            color: #ccc;
            text-decoration: none;
            font-size: 13px;
            transition: color 0.2s;
        }

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

        /* 友情链接专用区块 */
        .friend-links-area {
            border-top: 1px solid #333;
            padding-top: 30px;
            margin-bottom: 30px;
        }

        .friend-links-title {
            font-size: 14px;
            font-weight: 800;
            color: #aaa;
            margin-bottom: 16px;
        }

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

        .friend-links-list a {
            color: #888;
            text-decoration: none;
            font-size: 12px;
            transition: color 0.2s;
        }

        .friend-links-list a:hover {
            color: var(--primary-yellow);
        }

        /* 版权与备案 */
        .footer-bottom {
            border-top: 1px solid #333;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        .footer-bottom p {
            font-size: 12px;
            color: #888;
        }

        .ai-page-home-link {
            color: var(--primary-yellow);
            text-decoration: underline;
        }

        /* 浮动客服入口 */
        .float-contact {
            position: fixed;
            bottom: 40px;
            right: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .float-btn {
            width: 54px;
            height: 54px;
            border-radius: 50%;
            border: 3px solid var(--border-color);
            background-color: var(--primary-yellow);
            box-shadow: 4px 4px 0 var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.2s;
            position: relative;
        }

        .float-btn:hover {
            transform: scale(1.1);
            box-shadow: 6px 6px 0 var(--border-color);
        }

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

        .float-popover {
            position: absolute;
            right: 70px;
            bottom: 0;
            width: 220px;
            background-color: #fff;
            border: 3px solid var(--border-color);
            border-radius: 12px;
            padding: 16px;
            box-shadow: 6px 6px 0 var(--border-color);
            display: none;
            flex-direction: column;
            align-items: center;
            text-align: center;
        }

        .float-popover img {
            width: 120px;
            height: 120px;
            margin-bottom: 10px;
            border: 2px solid var(--border-color);
            border-radius: 6px;
        }

        .float-popover p {
            font-size: 12px;
            color: #333;
            font-weight: 800;
        }

        .float-btn:hover .float-popover {
            display: flex;
        }

        /* 响应式适配 */
        @media (max-width: 992px) {
            h1.hero-title {
                font-size: 38px;
            }
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-visual {
                height: 320px;
            }
            .about-grid, .solution-tab-content.active, .network-grid, .faq-grid, .form-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .about-visual-area {
                order: -1;
            }
        }

        @media (max-width: 768px) {
            nav.nav-menu {
                position: fixed;
                top: 83px;
                left: -100%;
                width: 100%;
                height: calc(100vh - 83px);
                background-color: var(--bg-color);
                flex-direction: column;
                padding: 40px 24px;
                transition: 0.3s;
                border-top: 3px solid var(--border-color);
                overflow-y: auto;
            }

            nav.nav-menu.active {
                left: 0;
            }

            .menu-toggle {
                display: flex;
            }

            .nav-actions {
                display: none;
            }
        }