/* ====== 公共CSS ====== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        :root {
            --primary-color: #1a73e8;
            --secondary-color: #ff6b35;
            --accent-color: #00c9b7;
            --light-color: #f8f9fa;
            --dark-color: #202124;
            --text-color: #333;
            --transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }
        
        html {
            scroll-behavior: smooth;
        }
        
        body {
            color: var(--text-color);
            line-height: 1.6;
            overflow-x: hidden;
            background: #f0f2f5;
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        section {
            padding: 80px 0;
        }
        
        h1, h2, h3, h4 {
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 20px;
        }
        
        h2 {
            font-size: 2.5rem;
            text-align: center;
            margin-bottom: 50px;
            position: relative;
        }
        
        h2:after {
            content: '';
            position: absolute;
            bottom: -15px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--secondary-color);
            border-radius: 2px;
        }
        
        p {
            margin-bottom: 15px;
        }
        
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        
        .btn {
            display: inline-block;
            padding: 14px 32px;
            background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
            color: #fff;
            border-radius: 50px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(26, 115, 232, 0.3);
            position: relative;
            overflow: hidden;
        }
        
        .btn:before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
            transition: 0.5s;
        }
        
        .btn:hover:before {
            left: 100%;
        }
        
        .btn:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(26, 115, 232, 0.4);
        }
        
        /* ====== 导航栏样式 ====== */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            box-shadow: 0 2px 20px rgba(0,0,0,0.1);
            transition: var(--transition);
            backdrop-filter: blur(10px);
        }
        
        header.scrolled {
            padding: 10px 0;
        }
        
        .navbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
        }
        
        .logo {
            display: flex;
            align-items: center;
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary-color);
            position: relative;
            overflow: hidden;
        }
        
        .logo-text {
            position: relative;
            display: inline-block;
            background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            animation: logoColorShift 5s infinite alternate;
        }
        
        @keyframes logoColorShift {
            0% { filter: hue-rotate(0deg); }
            100% { filter: hue-rotate(45deg); }
        }
        
        .nav-menu {
            display: flex;
            list-style: none;
        }
        
        .nav-menu li {
            margin-left: 30px;
        }
        
        .nav-menu a {
            color: var(--dark-color);
            font-weight: 600;
            position: relative;
            padding: 5px 0;
        }
        
        .nav-menu a:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--secondary-color);
            border-radius: 2px;
            transition: var(--transition);
        }
        
        .nav-menu a:hover:after {
            width: 100%;
        }
        
        .phone {
            display: flex;
            align-items: center;
            color: var(--primary-color);
            font-weight: 700;
            font-size: 1.1rem;
        }
        
        .phone i {
            margin-right: 8px;
            color: var(--secondary-color);
            animation: phonePulse 2s infinite;
        }
        
        @keyframes phonePulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.1); }
            100% { transform: scale(1); }
        }
        
        .hamburger {
            display: none;
            cursor: pointer;
        }
        
        /* ====== 底部样式 ====== */
        footer {
            background: var(--dark-color);
            color: #fff;
            padding: 60px 0 20px;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            margin-bottom: 40px;
        }
        
        .footer-column h3 {
            font-size: 1.3rem;
            margin-bottom: 25px;
            color: var(--accent-color);
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 12px;
        }
        
        .footer-links a:hover {
            color: var(--accent-color);
            padding-left: 5px;
        }
        
        .contact-info {
            list-style: none;
        }
        
        .contact-info li {
            margin-bottom: 15px;
            display: flex;
            align-items: flex-start;
        }
        
        .contact-info i {
            margin-right: 10px;
            color: var(--accent-color);
            margin-top: 5px;
        }
        
        .qrcode {
            text-align: center;
        }
        
        .qrcode img {
            max-width: 150px;
            margin-bottom: 10px;
            border-radius: 10px;
        }
        
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 20px;
            margin: 30px 0;
            padding: 20px 0;
            border-top: 1px solid rgba(255,255,255,0.1);
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        
        .friend-links a {
            color: #ccc;
        }
        
        .friend-links a:hover {
            color: var(--accent-color);
        }
        
        .copyright {
            text-align: center;
            padding-top: 20px;
            color: #aaa;
            font-size: 0.9rem;
        }
        
        /* ====== 响应式设计 ====== */
        @media (max-width: 992px) {
            .footer-content {
                grid-template-columns: repeat(2, 1fr);
            }
            
            h2 {
                font-size: 2rem;
            }
        }
        
        @media (max-width: 768px) {
            .hamburger {
                display: block;
                color: var(--primary-color);
                font-size: 1.5rem;
            }
            
            .nav-menu {
                position: fixed;
                top: 80px;
                right: -100%;
                width: 80%;
                height: calc(100vh - 80px);
                background: rgba(255, 255, 255, 0.98);
                flex-direction: column;
                align-items: center;
                padding-top: 50px;
                transition: var(--transition);
                backdrop-filter: blur(10px);
                box-shadow: -5px 0 15px rgba(0,0,0,0.1);
            }
            
            .nav-menu.active {
                right: 0;
            }
            
            .nav-menu li {
                margin: 15px 0;
            }
            
            .phone {
                display: none;
            }
        }
        
        @media (max-width: 576px) {
            .footer-content {
                grid-template-columns: 1fr;
            }
            
            section {
                padding: 60px 0;
            }
        }