/* 页面标题横幅 */
        .page-banner {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            padding: 160px 0 80px;
            color: var(--light-text);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        
        .page-banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><path d="M0,0 L100,0 L100,100 Z" fill="rgba(255,255,255,0.05)"/></svg>');
            background-size: 100% 100%;
        }
        
        .page-banner h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
            position: relative;
        }
        
        .page-banner p {
            font-size: 1.4rem;
            max-width: 800px;
            margin: 0 auto;
            opacity: 0.9;
        }
        
        /* 平台概述 */
        .platform-overview {
            padding: 100px 0;
            background: var(--light);
        }
        
        .overview-content {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
        }
        
        .overview-text {
            flex: 1;
            min-width: 300px;
            padding-right: 50px;
        }
        
        .overview-text h2 {
            font-size: 2.5rem;
            color: var(--primary-dark);
            margin-bottom: 25px;
            position: relative;
            display: inline-block;
        }
        
        .overview-text h2::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 0;
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 2px;
        }
        
        .overview-text p {
            margin-bottom: 20px;
            font-size: 1.1rem;
        }
        
        .overview-image {
            flex: 1;
            min-width: 300px;
            height: 450px;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
            transform: rotate(-3deg);
            transition: transform 0.5s ease;
        }
        
        .overview-image:hover {
            transform: rotate(0deg);
        }
        
        .overview-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        
        /* 平台优势 */
        .platform-advantages {
            padding: 100px 0;
            background: #FFFFFF;
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 70px;
        }
        
        .section-title h2 {
            font-size: 2.8rem;
            color: var(--primary-dark);
            margin-bottom: 15px;
        }
        
        .section-title p {
            font-size: 1.2rem;
            color: var(--text);
            max-width: 600px;
            margin: 0 auto;
        }
        
        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 40px;
        }
        
        .advantage-card {
            background: var(--light);
            border-radius: 16px;
            padding: 40px 30px;
            text-align: center;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            transition: all 0.4s ease;
        }
        
        .advantage-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
        }
        
        .advantage-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--light-text);
            font-size: 2.5rem;
            margin: 0 auto 25px;
        }
        
        .advantage-content h3 {
            color: var(--primary-dark);
            margin-bottom: 15px;
            font-size: 1.5rem;
        }
        
        /* 发展历程 */
        .platform-timeline {
            padding: 100px 0;
            background: var(--light);
            position: relative;
        }
        
        .platform-timeline::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><path d="M0,0 L100,0 L100,100 L0,100 Z" fill="rgba(30, 64, 175, 0.05)"/></svg>');
            background-size: 100% 100%;
            z-index: -1;
        }
        
        .timeline {
            position: relative;
            max-width: 1000px;
            margin: 0 auto;
        }
        
        .timeline::after {
            content: '';
            position: absolute;
            width: 6px;
            background-color: var(--primary);
            top: 0;
            bottom: 0;
            left: 50%;
            margin-left: -3px;
            border-radius: 3px;
        }
        
        .timeline-item {
            padding: 10px 40px;
            position: relative;
            width: 50%;
            box-sizing: border-box;
        }
        
        .timeline-item:nth-child(odd) {
            left: 0;
        }
        
        .timeline-item:nth-child(even) {
            left: 50%;
        }
        
        .timeline-item::after {
            content: '';
            position: absolute;
            width: 25px;
            height: 25px;
            background-color: var(--accent);
            border: 4px solid var(--primary);
            top: 20px;
            border-radius: 50%;
            z-index: 1;
        }
        
        .timeline-item:nth-child(odd)::after {
            right: -13px;
        }
        
        .timeline-item:nth-child(even)::after {
            left: -13px;
        }
        
        .timeline-content {
            padding: 20px 30px;
            background-color: #fff;
            position: relative;
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
        }
        
        .timeline-content h3 {
            color: var(--primary-dark);
            margin-bottom: 10px;
        }
        
        .timeline-date {
            font-weight: bold;
            color: var(--accent);
            margin-bottom: 10px;
            display: block;
        }
        
        /* 服务流程 */
        .service-process {
            padding: 100px 0;
            background: #FFFFFF;
        }
        
        .process-steps {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            max-width: 1000px;
            margin: 0 auto;
        }
        
        .process-step {
            flex: 1;
            min-width: 200px;
            text-align: center;
            padding: 30px 20px;
            position: relative;
        }
        
        .process-step:not(:last-child)::after {
            content: '';
            position: absolute;
            top: 50%;
            right: 0;
            width: 30%;
            height: 2px;
            background: var(--primary-light);
            transform: translateY(-50%);
        }
        
        .step-number {
            width: 60px;
            height: 60px;
            background: var(--primary);
            color: var(--light-text);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: bold;
            margin: 0 auto 20px;
            position: relative;
        }
        
        .step-number::after {
            content: '';
            position: absolute;
            width: 70px;
            height: 70px;
            border: 2px solid var(--primary-light);
            border-radius: 50%;
            top: -5px;
            left: -5px;
            animation: pulse 2s infinite;
        }
        
        @keyframes pulse {
            0% {
                transform: scale(1);
                opacity: 1;
            }
            100% {
                transform: scale(1.5);
                opacity: 0;
            }
        }
        
        .process-step h3 {
            color: var(--primary-dark);
            margin-bottom: 15px;
            font-size: 1.3rem;
        }
        
        /* 成功案例 */
        .success-cases {
            padding: 100px 0;
            background: var(--light);
        }
        
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 40px;
        }
        
        .case-card {
            background: #fff;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            transition: all 0.4s ease;
        }
        
        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
        }
        
        .case-image {
            height: 200px;
            overflow: hidden;
        }
        
        .case-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        
        .case-card:hover .case-image img {
            transform: scale(1.05);
        }
        
        .case-content {
            padding: 25px;
        }
        
        .case-content h3 {
            color: var(--primary-dark);
            margin-bottom: 15px;
            font-size: 1.4rem;
        }
        
        .case-content p {
            margin-bottom: 20px;
            color: var(--text);
        }
        
        .case-stats {
            display: flex;
            justify-content: space-around;
            border-top: 1px solid var(--light);
            padding-top: 20px;
            margin-top: 20px;
        }
        
        .stat {
            text-align: center;
        }
        
        .stat-number {
            font-size: 1.8rem;
            font-weight: bold;
            color: var(--primary);
            margin-bottom: 5px;
        }
        
        .stat-label {
            font-size: 0.9rem;
            color: var(--text);
        }
        
  
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .overview-text, .overview-image {
                flex: 100%;
                padding-right: 0;
            }
            
            .overview-text {
                margin-bottom: 40px;
                text-align: center;
            }
            
            .overview-text h2::after {
                left: 50%;
                transform: translateX(-50%);
            }
            
            .timeline::after {
                left: 31px;
            }
            
            .timeline-item {
                width: 100%;
                padding-left: 70px;
                padding-right: 25px;
            }
            
            .timeline-item:nth-child(even) {
                left: 0;
            }
            
            .timeline-item::after {
                left: 18px;
            }
            
            .process-steps {
                flex-direction: column;
            }
            
            .process-step:not(:last-child)::after {
                display: none;
            }
            
            .process-step {
                margin-bottom: 40px;
            }
        }
        
        @media (max-width: 768px) {
            .menu-toggle {
                display: block;
            }
            
            .nav-menu {
                position: fixed;
                top: 80px;
                left: -100%;
                flex-direction: column;
                background: var(--primary-dark);
                width: 100%;
                text-align: center;
                transition: 0.4s;
                box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
                padding: 30px 0;
            }
            
            .nav-menu.active {
                left: 0;
            }
            
            .nav-menu li {
                margin: 20px 0;
            }
            
            .page-banner h1 {
                font-size: 2.5rem;
            }
            
            .page-banner p {
                font-size: 1.1rem;
            }
            
            .section-title h2 {
                font-size: 2.2rem;
            }
        }
        
        /* 动画效果 */
        @keyframes float {
            0%, 100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-10px);
            }
        }
        
        .floating {
            animation: float 5s ease-in-out infinite;
        }