* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        :root {
            --primary-dark: #0B3B5B;
            --primary-blue: #1E3A6F;
            --tech-blue: #2D7EE9;
            --gold: #D4AF37;
            --orange: #F5A623;
            --bg-light: #F5F7FA;
            --text-dark: #333;
            --text-gray: #666;
            --white: #fff;
            --shadow: 0 2px 8px rgba(0,0,0,0.1);
            --shadow-hover: 0 4px 16px rgba(0,0,0,0.15);
        }
        
        body {
            font-family: Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            line-height: 1.6;
            color: var(--text-dark);
            background-color: var(--bg-light);
        }
        
        /* 导航栏 */
        header {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-blue) 100%);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        
        nav {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 70px;
        }
        
        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--white);
            text-decoration: none;
            font-size: 1.25rem;
            font-weight: 600;
        }
        
        .logo svg {
            width: 40px;
            height: 40px;
        }
        
        .logo img {
            width: auto;
            height: 50px;
            filter: brightness(0) invert(1);
        }
        
        .nav-menu {
            display: flex;
            list-style: none;
            gap: 8px;
        }
        
        .nav-menu a {
            color: rgba(255,255,255,0.9);
            text-decoration: none;
            padding: 8px 16px;
            border-radius: 6px;
            transition: all 0.3s ease;
            font-size: 0.95rem;
        }
        
        .nav-menu a:hover,
        .nav-menu a.active {
            background: rgba(255,255,255,0.15);
            color: var(--white);
        }
        
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: var(--white);
            cursor: pointer;
            padding: 8px;
        }
        
        .mobile-contact {
            display: none;
        }
        
        .mobile-buttons {
            display: none;
        }
        
        /* 页面标题区 */
        .page-header {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-blue) 100%);
            padding: 80px 20px;
            text-align: center;
            color: var(--white);
        }
        
        .page-header h1 {
            font-size: 2.5rem;
            margin-bottom: 15px;
            font-weight: 600;
        }
        
        .page-header p {
            font-size: 1.1rem;
            opacity: 0.9;
            max-width: 600px;
            margin: 0 auto;
        }
        
        /* 流程区域 */
        .process-section {
            padding: 80px 20px;
            max-width: 1200px;
            margin: 0 auto;
        }
        
        /* 水平步骤条 */
        .process-steps {
            display: flex;
            justify-content: space-between;
            position: relative;
            margin-bottom: 60px;
        }
        
        .process-steps::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 60px;
            right: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--tech-blue) 0%, var(--gold) 100%);
            border-radius: 2px;
        }
        
        .step-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            position: relative;
            z-index: 1;
            flex: 1;
            max-width: 150px;
        }
        
        .step-number {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, #d7c763 0%, #eb694b 100%);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.75rem;
            font-weight: 700;
            margin-bottom: 15px;
            box-shadow: 0 4px 15px rgba(45, 126, 233, 0.3);
            border: 4px solid var(--white);
        }
        
        .step-title {
            font-size: 1rem;
            color: var(--primary-dark);
            font-weight: 600;
            text-align: center;
        }
        
        /* 垂直步骤卡片 */
        .process-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 30px;
        }
        
        .process-card {
            background: var(--white);
            border-radius: 12px;
            padding: 35px;
            box-shadow: var(--shadow);
            transition: all 0.3s ease;
            border: 1px solid #e8ecf1;
            position: relative;
            overflow: hidden;
        }
        
        .process-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }
        
        .process-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 5px;
            height: 100%;
            background: linear-gradient(180deg, #4bd1eb 0%, #385887 100%);
        }
        
        .card-header {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-bottom: 20px;
        }
        
        .card-icon {
            width: 70px;
            height: 70px;
            background: linear-gradient(135deg, #d7c763 0%, #eb694b 100%);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        
        .card-icon svg {
            width: 35px;
            height: 35px;
            fill: white;
        }
        
        .card-title-area {
            flex: 1;
        }
        
        .step-badge {
            display: inline-block;
            padding: 4px 12px;
            background: #ffce31;
            color: var(--primary-dark);
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        
        .card-title-area h3 {
            font-size: 1.3rem;
            color: #217fe3;
        }
        
        .process-title {
            font-size: 1.4rem;
            color: #217fe3;
            font-weight: 600;
        }
        
        .process-card p {
            color: var(--text-gray);
            line-height: 1.8;
            font-size: 0.95rem;
        }
        
        .process-card ul {
            margin-top: 15px;
            padding-left: 20px;
        }
        
        .process-card li {
            color: var(--text-gray);
            margin-bottom: 8px;
            font-size: 0.95rem;
        }
        
        /* CTA区域 */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-blue) 100%);
            padding: 80px 20px;
            text-align: center;
            color: white;
        }
        
        .cta-content {
            max-width: 600px;
            margin: 0 auto;
        }
        
        .cta-section h2 {
            font-size: 2rem;
            margin-bottom: 20px;
        }
        
        .cta-section p {
            font-size: 1.1rem;
            opacity: 0.9;
            margin-bottom: 35px;
        }
        
        .cta-buttons {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
        }
        
        .cta-btn {
            padding: 16px 40px;
            border-radius: 50px;
            font-size: 1.1rem;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        
        .cta-btn.primary {
            background: var(--orange);
            color: white;
        }
        
        .cta-btn.primary:hover {
            background: #e09513;
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(245, 166, 35, 0.4);
        }
        
        .cta-btn.secondary {
            background: transparent;
            color: white;
            border: 2px solid rgba(255,255,255,0.5);
        }
        
        .cta-btn.secondary:hover {
            background: rgba(255,255,255,0.1);
            border-color: white;
        }
        
        /* 页脚 */
        footer {
            background: linear-gradient(135deg, var(--primary-dark) 0%, #051524 100%);
            color: var(--white);
            padding: 50px 20px 30px;
        }
        
        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 30px;
        }
        
        .footer-section h4 {
            font-size: 1.1rem;
            margin-bottom: 20px;
            color: var(--gold);
        }
        
        .footer-section p,
        .footer-section a {
            color: rgba(255,255,255,0.8);
            text-decoration: none;
            line-height: 1.8;
            font-size: 0.95rem;
        }
        
        .footer-section a:hover {
            color: var(--white);
        }
        
        .contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }
        
        .contact-item svg {
            width: 18px;
            height: 18px;
            fill: var(--gold);
            flex-shrink: 0;
        }
        
        .footer-bottom {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
        }
        
        /* 弹窗 */
        .modal-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0,0,0,0.5);
            z-index: 2000;
            justify-content: center;
            align-items: center;
        }
        
        .modal-overlay.active {
            display: flex;
        }
        
        .modal {
            background: white;
            border-radius: 12px;
            padding: 40px;
            max-width: 400px;
            text-align: center;
            animation: modalSlide 0.3s ease;
        }
        
        @keyframes modalSlide {
            from {
                opacity: 0;
                transform: translateY(-30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        .modal-icon {
            width: 70px;
            height: 70px;
            background: linear-gradient(135deg, var(--orange) 0%, #E8951A 100%);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
        }
        
        .modal-icon svg {
            width: 35px;
            height: 35px;
            fill: white;
        }
        
        .modal h3 {
            color: var(--primary-dark);
            margin-bottom: 15px;
        }
        
        .modal-title {
            color: var(--primary-dark);
            margin-bottom: 15px;
            font-size: 1.25rem;
            font-weight: 600;
        }
        
        .modal p {
            color: var(--text-gray);
            margin-bottom: 25px;
        }
        
        .modal-close {
            padding: 12px 35px;
            background: var(--tech-blue);
            color: white;
            border: none;
            border-radius: 8px;
            cursor: pointer;
            font-size: 1rem;
            transition: background 0.3s ease;
        }
        
        .modal-close:hover {
            background: var(--primary-blue);
        }
        
        /* 响应式 */
        @media (max-width: 968px) {
            .process-steps {
                display: none;
            }
            
            .process-cards {
                grid-template-columns: 1fr;
            }
        }
        
        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: var(--primary-dark);
                flex-direction: column;
                padding: 20px;
                gap: 10px;
            }
            
            .nav-menu.active {
                display: flex;
            }
            
            .mobile-contact {
                display: block;
                margin-top: 15px;
                padding-top: 15px;
                border-top: 1px solid rgba(255, 255, 255, 0.2);
            }
            
            .contact-item {
                color: rgba(255, 255, 255, 0.8);
                font-size: 0.85rem;
                margin-bottom: 8px;
            }
            
            .mobile-buttons {
                display: flex;
                gap: 10px;
                margin-top: 15px;
            }
            
            .mobile-btn {
                flex: 1;
                padding: 12px 0;
                text-align: center;
                border-radius: 8px;
                font-weight: 600;
                text-decoration: none;
                transition: all 0.3s ease;
            }
            
            .consult-btn {
                background: var(--primary-blue);
                color: white;
            }
            
            .consult-btn:hover {
                background: var(--primary-dark);
            }
            
            .quote-btn {
                background: var(--gold);
                color: var(--primary-dark);
            }
            
            .quote-btn:hover {
                background: #d4a933;
            }
            
            .mobile-menu-btn {
                display: block;
                font-size: 24px;
            }
            
            .page-header h1 {
                font-size: 1.75rem;
            }
            
            .cta-section h2 {
                font-size: 1.5rem;
            }
            
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            
            .cta-btn {
                width: 100%;
                max-width: 280px;
                justify-content: center;
            }
        }