/* ===== 基础样式 ===== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        :root {
            --primary-color: #2563eb;
            --secondary-color: #10b981;
            --accent-color: #f59e0b;
            --light-color: #f8fafc;
            --dark-color: #1e293b;
            --background-color: #ffffff;
            --card-color: #f1f5f9;
            --text-light: #64748b;
            --transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }
        
        html {
            scroll-behavior: smooth;
        }
        
        body {
            font-family: 'Inter', sans-serif;
            background-color: var(--background-color);
            color: var(--dark-color);
            line-height: 1.7;
            overflow-x: hidden;
        }
        
        h1, h2, h3, h4, h5, h6 {
            font-weight: 600;
            line-height: 1.3;
            margin-bottom: 1rem;
        }
        
        .container {
            width: 90%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        
        .btn {
            display: inline-block;
            background: var(--primary-color);
            color: white;
            padding: 14px 32px;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            transition: var(--transition);
            border: none;
            box-shadow: 0 5px 15px rgba(37, 99, 235, 0.3);
        }
        
        .btn:hover {
            background: #1d4ed8;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(37, 99, 235, 0.4);
        }
        
        /* ===== 导航栏 ===== */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.95);
            padding: 18px 0;
            z-index: 1000;
            transition: var(--transition);
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
            backdrop-filter: blur(10px);
        }
        
        .navbar.scrolled {
            padding: 12px 0;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
        }
        
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .logo {
            display: flex;
            align-items: center;
            position: relative;
        }
        
        .logo h1 {
            font-size: 1.8rem;
            background: linear-gradient(90deg, #2563eb, #10b981, #f59e0b);
            background-size: 200% 100%;
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            animation: gradientShift 3s ease infinite;
            font-weight: 700;
            letter-spacing: 1px;
        }
        
        @keyframes gradientShift {
            0% { background-position: 0% 50%; }
            50% { background-position: 100% 50%; }
            100% { background-position: 0% 50%; }
        }
        
        .nav-menu {
            display: flex;
            list-style: none;
        }
        
        .nav-item {
            margin-left: 30px;
            position: relative;
        }
        
        .nav-link {
            color: var(--dark-color);
            text-decoration: none;
            font-weight: 500;
            font-size: 1.1rem;
            transition: var(--transition);
            position: relative;
            padding: 5px 0;
        }
        
        .nav-link::before {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--secondary-color);
            border-radius: 10px;
            transition: var(--transition);
        }
        
        .nav-link:hover {
            color: var(--primary-color);
        }
        
        .nav-link:hover::before {
            width: 100%;
        }
        
        .phone-number {
            display: flex;
            align-items: center;
            font-weight: 600;
            font-size: 1.2rem;
            padding: 10px 20px;
            border-radius: 30px;
            background: linear-gradient(90deg, #2563eb, #10b981);
            background-size: 200% 100%;
            color: white;
            animation: gradientShift 3s ease infinite, pulse 2s ease infinite;
            box-shadow: 0 5px 15px rgba(37, 99, 235, 0.3);
        }
        
        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.05); }
            100% { transform: scale(1); }
        }
        
        .phone-number i {
            margin-right: 8px;
        }
        
        .hamburger {
            display: none;
            cursor: pointer;
        }
        
        .bar {
            display: block;
            width: 25px;
            height: 3px;
            margin: 5px auto;
            background-color: var(--dark-color);
            transition: var(--transition);
            border-radius: 3px;
        }
        
        /* ===== 底部 ===== */
        footer {
            background: var(--dark-color);
            color: white;
            padding: 60px 0 20px;
        }
        
        .footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
        }
        
        .footer-section {
            flex: 1;
            min-width: 250px;
            margin-bottom: 30px;
            padding: 0 15px;
        }
        
        .footer-section h3 {
            font-size: 1.4rem;
            margin-bottom: 20px;
            color: white;
            position: relative;
            padding-bottom: 10px;
        }
        
        .footer-section h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 2px;
            background: var(--secondary-color);
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 10px;
        }
        
        .footer-links a {
            color: rgba(255, 255, 255, 0.8);
            text-decoration: none;
            transition: var(--transition);
        }
        
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        
        .contact-info {
            display: flex;
            align-items: center;
            margin-bottom: 15px;
        }
        
        .contact-info i {
            margin-right: 10px;
            color: var(--secondary-color);
            width: 20px;
        }
        
        .qrcode {
            text-align: center;
        }
        
        .qrcode img {
            max-width: 150px;
            border: 2px solid white;
            padding: 5px;
            background: white;
            border-radius: 10px;
        }
        
        .qrcode p {
            margin-top: 10px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.8);
        }
        
        .footer-bottom {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 20px;
        }
        
        .footer-bottom p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
        }
        
        /* ===== 动画效果 ===== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        /* ===== 公共部分响应式调整 ===== */
        @media (max-width: 992px) {
            .hamburger {
                display: block;
            }
            
            .hamburger.active .bar:nth-child(2) {
                opacity: 0;
            }
            
            .hamburger.active .bar:nth-child(1) {
                transform: translateY(8px) rotate(45deg);
            }
            
            .hamburger.active .bar:nth-child(3) {
                transform: translateY(-8px) rotate(-45deg);
            }
            
            .nav-menu {
                position: fixed;
                left: -100%;
                top: 70px;
                flex-direction: column;
                background-color: white;
                width: 100%;
                text-align: center;
                transition: 0.3s;
                box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
                padding: 20px 0;
            }
            
            .nav-menu.active {
                left: 0;
            }
            
            .nav-item {
                margin: 15px 0;
            }
            
            .phone-number {
                display: none;
            }
        }