:root {
            --primary: #4f46e5;
            --primary-light: #818cf8;
            --secondary: #ec4899;
            --accent: #06b6d4;
            --dark: #0f172a;
            --light: #f8fafc;
            --white: #ffffff;
            --gray-100: #f1f5f9;
            --gray-200: #e2e8f0;
            --gray-300: #cbd5e1;
            --gray-600: #475569;
            --gradient: linear-gradient(135deg, #4f46e5 0%, #ec4899 50%, #06b6d4 100%);
            --gradient-hover: linear-gradient(135deg, #3b82f6 0%, #d946ef 50%, #0891b2 100%);
            --shadow: 0 10px 30px -10px rgba(79, 70, 229, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --container-width: 1200px;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            scroll-behavior: smooth;
        }

        body {
            background-color: var(--light);
            color: var(--dark);
            line-height: 1.6;
            overflow-x: hidden;
        }

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

        /* 顶部导航 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background-color: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(12px);
            z-index: 1000;
            border-bottom: 1px solid var(--gray-200);
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
        }

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

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

        .logo-area img {
            height: 40px;
            width: auto;
            object-fit: contain;
        }

        .logo-area span {
            font-size: 20px;
            font-weight: 800;
            background: var(--gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

        .nav-menu a {
            text-decoration: none;
            color: var(--gray-600);
            font-weight: 500;
            font-size: 14px;
            transition: var(--transition);
            padding: 6px 10px;
            border-radius: 6px;
        }

        .nav-menu a:hover {
            color: var(--primary);
            background-color: rgba(79, 70, 229, 0.05);
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 20px;
            font-size: 14px;
            font-weight: 600;
            border-radius: 8px;
            transition: var(--transition);
            text-decoration: none;
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: var(--gradient);
            color: var(--white);
            box-shadow: 0 4px 15px rgba(79, 70, 229, 0.3);
        }

        .btn-primary:hover {
            background: var(--gradient-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(79, 70, 229, 0.4);
        }

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

        .btn-outline:hover {
            background-color: var(--primary);
            color: var(--white);
            transform: translateY(-2px);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--dark);
            cursor: pointer;
        }

        /* Hero首屏 (不可有图片) */
        .hero {
            padding: 160px 0 100px 0;
            background: radial-gradient(circle at 90% 10%, rgba(6, 182, 212, 0.08) 0%, rgba(236, 72, 153, 0.05) 50%, rgba(255, 255, 255, 0) 100%), var(--white);
            text-align: center;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--gray-200);
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -20%;
            left: -10%;
            width: 50%;
            height: 60%;
            background: radial-gradient(circle, rgba(79, 70, 229, 0.08) 0%, transparent 70%);
            z-index: 0;
            pointer-events: none;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            background: rgba(79, 70, 229, 0.08);
            border: 1px solid rgba(79, 70, 229, 0.15);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
        }

        .hero h1 {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--dark);
            max-width: 900px;
            margin: 0 auto 24px auto;
            position: relative;
            z-index: 1;
        }

        .hero h1 span {
            background: var(--gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 18px;
            color: var(--gray-600);
            max-width: 700px;
            margin: 0 auto 36px auto;
            position: relative;
            z-index: 1;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-bottom: 48px;
            position: relative;
            z-index: 1;
        }

        .hero-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            max-width: 900px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
            background: rgba(255, 255, 255, 0.7);
            backdrop-filter: blur(10px);
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--gray-200);
            box-shadow: var(--shadow);
        }

        .stat-item h3 {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 4px;
        }

        .stat-item p {
            font-size: 14px;
            color: var(--gray-600);
        }

        /* 统一分块结构 */
        section {
            padding: 90px 0;
            border-bottom: 1px solid var(--gray-200);
        }

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

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

        .section-tag {
            font-size: 14px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--secondary);
            margin-bottom: 12px;
            display: block;
        }

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

        .section-subtitle {
            font-size: 16px;
            color: var(--gray-600);
        }

        /* 卡片网格 */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

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

        .card {
            background-color: var(--white);
            border: 1px solid var(--gray-200);
            border-radius: 16px;
            padding: 30px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
        }

        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
            border-color: var(--primary-light);
        }

        .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(79, 70, 229, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 24px;
            margin-bottom: 20px;
        }

        .card h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--dark);
        }

        .card p {
            color: var(--gray-600);
            font-size: 14px;
            line-height: 1.6;
        }

        /* 平台聚合模块专用 */
        .platform-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
            gap: 15px;
            margin-top: 30px;
        }

        .platform-tag {
            background-color: var(--gray-100);
            border: 1px solid var(--gray-200);
            padding: 12px;
            border-radius: 10px;
            text-align: center;
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
            color: var(--gray-600);
        }

        .platform-tag:hover {
            background: var(--gradient);
            color: var(--white);
            border-color: transparent;
            transform: scale(1.05);
        }

        /* 流程步骤 */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
            position: relative;
        }

        .step-item {
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .step-num {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: var(--gradient);
            color: var(--white);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            margin: 0 auto 20px auto;
            box-shadow: 0 4px 10px rgba(79, 70, 229, 0.2);
        }

        .step-item h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        /* 表格通用样式 */
        .table-responsive {
            overflow-x: auto;
            background: var(--white);
            border-radius: 16px;
            border: 1px solid var(--gray-200);
            box-shadow: var(--shadow);
        }

        table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            font-size: 15px;
        }

        th {
            background-color: var(--gray-100);
            color: var(--dark);
            font-weight: 700;
            padding: 16px 20px;
            border-bottom: 2px solid var(--gray-200);
        }

        td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--gray-200);
            color: var(--gray-600);
        }

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

        /* 对比评测高亮 */
        .rating-badge {
            background-color: #fef08a;
            color: #854d0e;
            padding: 4px 8px;
            border-radius: 4px;
            font-weight: 700;
            font-size: 12px;
        }

        /* 案例图文混排 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .case-card {
            background: var(--white);
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--gray-200);
            box-shadow: var(--shadow);
        }

        .case-img-container {
            width: 100%;
            height: 240px;
            overflow: hidden;
            background-color: var(--gray-100);
            display: flex;
            align-items: center;
            justify-content: center;
        }

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

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

        .case-info {
            padding: 24px;
        }

        /* FAQ折叠面板 */
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--white);
            border: 1px solid var(--gray-200);
            border-radius: 12px;
            margin-bottom: 16px;
            overflow: hidden;
        }

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

        .faq-question:hover {
            background-color: var(--gray-100);
        }

        .faq-question::after {
            content: '+';
            font-size: 20px;
            color: var(--primary);
            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-color: var(--gray-100);
        }

        .faq-answer-content {
            padding: 20px;
            font-size: 14px;
            color: var(--gray-600);
            border-top: 1px solid var(--gray-200);
        }

        /* 评论网格 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .review-card {
            background: var(--white);
            border: 1px solid var(--gray-200);
            padding: 24px;
            border-radius: 16px;
            position: relative;
        }

        .review-user {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 20px;
        }

        .user-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-weight: 700;
        }

        .user-meta h5 {
            font-size: 14px;
            font-weight: 700;
        }

        .user-meta span {
            font-size: 12px;
            color: var(--gray-600);
        }

        /* 需求匹配表单 */
        .contact-section {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
        }

        .contact-form-container {
            background: var(--white);
            padding: 40px;
            border-radius: 20px;
            border: 1px solid var(--gray-200);
            box-shadow: var(--shadow);
        }

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

        .form-label {
            display: block;
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--dark);
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--gray-200);
            border-radius: 8px;
            outline: none;
            transition: var(--transition);
            font-size: 14px;
        }

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
        }

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

        .contact-info-panel {
            background: var(--white);
            padding: 40px;
            border-radius: 20px;
            border: 1px solid var(--gray-200);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

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

        .info-item {
            margin-bottom: 24px;
            display: flex;
            align-items: flex-start;
            gap: 16px;
        }

        .info-item-content h5 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .info-item-content p {
            font-size: 14px;
            color: var(--gray-600);
        }

        .qr-codes {
            display: flex;
            gap: 20px;
            margin-top: 30px;
        }

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

        .qr-item img {
            width: 110px;
            height: 110px;
            border-radius: 8px;
            border: 1px solid var(--gray-200);
            padding: 4px;
            background-color: var(--white);
        }

        .qr-item p {
            font-size: 12px;
            margin-top: 8px;
            font-weight: 600;
        }

        /* 页脚 */
        footer {
            background-color: var(--dark);
            color: var(--gray-300);
            padding: 60px 0 30px 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-col h4 {
            color: var(--white);
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .footer-col ul {
            list-style: none;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            color: var(--gray-300);
            text-decoration: none;
            transition: var(--transition);
            font-size: 14px;
        }

        .footer-col ul li a:hover {
            color: var(--white);
            padding-left: 4px;
        }

        .footer-bottom {
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            flex-wrap: wrap;
            gap: 20px;
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 20px;
        }

        .friend-links a {
            color: var(--gray-300);
            text-decoration: none;
            font-size: 13px;
            background: rgba(255, 255, 255, 0.05);
            padding: 4px 8px;
            border-radius: 4px;
            transition: var(--transition);
        }

        .friend-links a:hover {
            background-color: var(--primary);
            color: var(--white);
        }

        /* 悬浮客服 */
        .floating-service {
            position: fixed;
            right: 24px;
            bottom: 24px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            z-index: 999;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: var(--white);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
            position: relative;
            border: 1px solid var(--gray-200);
        }

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

        .float-btn .tooltip {
            position: absolute;
            right: 60px;
            background-color: var(--dark);
            color: var(--white);
            padding: 8px 12px;
            border-radius: 6px;
            font-size: 12px;
            white-space: nowrap;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            pointer-events: none;
        }

        .float-btn:hover .tooltip {
            opacity: 1;
            visibility: visible;
        }

        .qr-popup {
            position: absolute;
            bottom: 60px;
            right: 0;
            background-color: var(--white);
            border: 1px solid var(--gray-200);
            border-radius: 8px;
            padding: 10px;
            box-shadow: var(--shadow);
            display: none;
            text-align: center;
        }

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

        .qr-popup img {
            width: 100px;
            height: 100px;
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                grid-template-columns: repeat(3, 1fr);
            }
            .hero h1 {
                font-size: 36px;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--white);
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--gray-200);
                box-shadow: 0 4px 10px rgba(0,0,0,0.05);
            }
            .nav-menu.active {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .hero-stats {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-3, .grid-4 {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr;
            }
            .cases-grid {
                grid-template-columns: 1fr;
            }
            .reviews-grid {
                grid-template-columns: 1fr;
            }
            .contact-section {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }