:root {
            --black: #000000;
            --white: #ffffff;
            --gray: #f5f5f5;
            --gray-dark: #333333;
            --accent: #ff3366;
            --accent-light: #ff6699;
            --primary: #0066ff;
            --transition: all 0.3s ease;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.6;
            color: var(--black);
            background: var(--white);
            overflow-x: hidden;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        
        /* Header - 极简固定导航 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            padding: 30px 0;
            background: var(--white);
            z-index: 1000;
            transition: var(--transition);
        }
        
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .logo {
            font-size: 24px;
            font-weight: 900;
            letter-spacing: 2px;
            text-decoration: none;
            color: var(--black);
        }
        
        .logo span {
            color: var(--accent);
        }
        
        .nav-links {
            display: flex;
            gap: 40px;
        }
        
        .nav-links a {
            text-decoration: none;
            color: var(--gray-dark);
            font-size: 14px;
            font-weight: 500;
            letter-spacing: 1px;
            text-transform: uppercase;
            position: relative;
        }
        
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: var(--transition);
        }
        
        .nav-links a:hover::after {
            width: 100%;
        }
        
        .menu-toggle {
            display: none;
            font-size: 24px;
            cursor: pointer;
        }
        
        /* Hero - 极简大图 */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            background: var(--white);
            padding-top: 100px;
        }
        
        .hero-content {
            max-width: 600px;
        }
        
        .hero-subtitle {
            font-size: 12px;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--accent);
            margin-bottom: 20px;
        }
        
        .hero-title {
            font-size: 64px;
            font-weight: 300;
            line-height: 1.1;
            margin-bottom: 30px;
        }
        
        .hero-title span {
            font-weight: 700;
            color: var(--accent);
        }
        
        .hero-description {
            font-size: 18px;
            color: var(--gray-dark);
            margin-bottom: 40px;
            max-width: 500px;
        }
        
        .hero-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: var(--accent);
            font-size: 16px;
            font-weight: 500;
            border-bottom: 2px solid var(--accent);
            padding-bottom: 5px;
        }
        
        /* Stats - 极简数据展示 */
        .stats {
            padding: 100px 0;
            background: var(--gray);
        }
        
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
        }
        
        .stat-item {
            text-align: center;
        }
        
        .stat-number {
            font-size: 48px;
            font-weight: 700;
            color: var(--accent);
            display: block;
            margin-bottom: 10px;
        }
        
        .stat-label {
            font-size: 12px;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--gray-dark);
        }
        
        /* Services - 极简服务卡片 */
        .services {
            padding: 120px 0;
        }
        
        .section-title {
            font-size: 40px;
            font-weight: 300;
            margin-bottom: 20px;
            text-align: center;
        }
        
        .section-subtitle {
            font-size: 16px;
            color: var(--gray-dark);
            text-align: center;
            max-width: 600px;
            margin: 0 auto 60px;
        }
        
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .service-card {
            padding: 40px;
            background: var(--white);
            border: 1px solid var(--gray);
            transition: var(--transition);
        }
        
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.05);
        }
        
        .service-number {
            font-size: 12px;
            color: var(--accent);
            margin-bottom: 20px;
            display: block;
        }
        
        .service-card h3 {
            font-size: 20px;
            margin-bottom: 15px;
        }
        
        .service-card p {
            color: var(--gray-dark);
            font-size: 14px;
        }
        
        /* CTA Banner */
        .cta-banner {
            background: var(--black);
            color: var(--white);
            padding: 80px 0;
            text-align: center;
        }
        
        .cta-banner h2 {
            font-size: 40px;
            font-weight: 300;
            margin-bottom: 20px;
        }
        
        .cta-button {
            display: inline-block;
            background: var(--accent);
            color: var(--white);
            padding: 15px 40px;
            text-decoration: none;
            font-size: 14px;
            letter-spacing: 2px;
            text-transform: uppercase;
            transition: var(--transition);
        }
        
        .cta-button:hover {
            background: var(--accent-light);
        }
        
        /* Process - 极简流程 */
        .process {
            padding: 120px 0;
        }
        
        .process-item {
            display: flex;
            align-items: center;
            gap: 40px;
            margin-bottom: 60px;
        }
        
        .process-number {
            width: 60px;
            height: 60px;
            background: var(--accent);
            color: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            font-weight: 700;
            flex-shrink: 0;
        }
        
        .process-content h3 {
            font-size: 24px;
            margin-bottom: 10px;
        }
        
        /* Contact */
        .contact {
            padding: 100px 0;
            background: var(--gray);
        }
        
        .contact-form {
            max-width: 600px;
            margin: 0 auto;
        }
        
        .form-group {
            margin-bottom: 30px;
        }
        
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 15px 0;
            background: transparent;
            border: none;
            border-bottom: 1px solid var(--gray-dark);
            font-size: 16px;
            color: var(--black);
        }
        
        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-bottom-color: var(--accent);
        }
        
        .submit-button {
            background: var(--black);
            color: var(--white);
            border: none;
            padding: 15px 40px;
            font-size: 14px;
            letter-spacing: 2px;
            text-transform: uppercase;
            cursor: pointer;
            transition: var(--transition);
        }
        
        .submit-button:hover {
            background: var(--accent);
        }
        
        /* Footer */
        footer {
            background: var(--black);
            color: var(--white);
            padding: 60px 0 30px;
        }
        
        .footer-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 40px;
        }
        
        .footer-links {
            display: flex;
            gap: 30px;
        }
        
        .footer-links a {
            color: var(--white);
            text-decoration: none;
            font-size: 12px;
            letter-spacing: 2px;
            text-transform: uppercase;
        }
        
        .footer-bottom {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 12px;
            color: rgba(255,255,255,0.5);
        }
        
        /* Responsive */
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            
            .menu-toggle {
                display: block;
            }
            
            .hero-title {
                font-size: 40px;
            }
            
            .section-title {
                font-size: 32px;
            }
            
            .footer-content {
                flex-direction: column;
                gap: 30px;
                text-align: center;
            }
            
            .footer-links {
                flex-direction: column;
                gap: 15px;
            }
        }
        
        @media (max-width: 480px) {
            .hero-title {
                font-size: 32px;
            }
            
            .stats-grid {
                grid-template-columns: 1fr;
            }
            
            .services-grid {
                grid-template-columns: 1fr;
            }
            
            .process-item {
                flex-direction: column;
                text-align: center;
            }
        }