/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #3498db;
    --secondary-color: #2ecc71;
    --accent-color: #e74c3c;
    --text-color: #333;
    --text-light: #666;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 15px 35px rgba(0, 0, 0, 0.15);
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-light);
    overflow-x: hidden;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.navbar {
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(15px);
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.navbar.scrolled {
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
    padding: 10px 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    transition: var(--transition);
}

/* 汉堡菜单按钮 */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 30px;
    height: 30px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--text-color);
    margin: 3px 0;
    transition: all 0.3s ease;
    border-radius: 2px;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    padding: 10px 0;
}

.logo:hover {
    transform: scale(1.03);
}

.logo-image {
    height: 60px;
    width: auto;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    filter: drop-shadow(0 4px 8px rgba(52, 152, 219, 0.3));
}

.logo:hover .logo-image {
    transform: rotate(8deg) scale(1.05);
    filter: drop-shadow(0 6px 12px rgba(52, 152, 219, 0.4));
}

.logo-text {
    font-size: 32px;
    font-weight: 800;
    letter-spacing: -1px;
    margin: 0;
    background: linear-gradient(135deg, var(--primary-color), #2980b9);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.logo:hover .logo-text {
    text-shadow: 0 4px 8px rgba(52, 152, 219, 0.3);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 10px;
}

.nav-links li {
    position: relative;
    margin: 0;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    padding: 12px 20px;
    border-radius: 8px;
    position: relative;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    align-items: center;
    gap: 5px;
}

.nav-links a:hover {
    color: var(--primary-color);
    background-color: rgba(52, 152, 219, 0.08);
    transform: translateY(-2px);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), #2980b9);
    border-radius: 2px;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-links a:hover::after {
    width: 80%;
}

.nav-links a.active {
    color: var(--primary-color);
    background-color: rgba(52, 152, 219, 0.1);
}

.nav-links a.active::after {
    width: 80%;
}

/* 欢迎区域 */
.welcome {
    margin-top: 80px;
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, #2980b9 100%);
    color: white;
    text-align: center;
}

.welcome-content h2 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: -1px;
}

.welcome-content p {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.9;
}

.welcome-features {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.welcome-feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
}

.welcome-feature-item i {
    color: var(--secondary-color);
}

/* 通用区域样式 */
.section-title {
    text-align: center;
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 60px;
    color: var(--text-color);
    position: relative;
    padding-bottom: 20px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--primary-color);
    border-radius: 2px;
}

/* 核心功能 */
.features {
    padding: 80px 0;
    background-color: var(--bg-white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.feature-card {
    background-color: var(--bg-light);
    padding: 40px 30px;
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-color);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), #2980b9);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 24px;
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.3);
    transition: var(--transition);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
    box-shadow: 0 8px 20px rgba(52, 152, 219, 0.4);
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-color);
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.6;
    font-size: 15px;
    margin-bottom: 20px;
}

.feature-highlights {
    text-align: left;
    margin-top: 20px;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    font-size: 14px;
    color: var(--text-light);
}

.highlight-item i {
    color: var(--secondary-color);
    font-size: 12px;
}

/* 售后服务 */
.service {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 80px;
}

.service-card {
    background-color: var(--bg-white);
    padding: 40px 30px;
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-color), var(--secondary-color));
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.service-icon {
    width: 60px;
    height: 60px;
    background-color: var(--accent-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 20px;
    box-shadow: 0 5px 15px rgba(231, 76, 60, 0.3);
    transition: var(--transition);
}

.service-card:nth-child(2) .service-icon {
    background-color: var(--secondary-color);
    box-shadow: 0 5px 15px rgba(46, 204, 113, 0.3);
}

.service-card:nth-child(3) .service-icon {
    background-color: #f39c12;
    box-shadow: 0 5px 15px rgba(243, 156, 18, 0.3);
}

.service-card:hover .service-icon {
    transform: scale(1.1);
}

.service-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-color);
}

.service-card p {
    color: var(--text-light);
    line-height: 1.6;
    font-size: 15px;
    margin-bottom: 20px;
}

.service-info {
    text-align: left;
    margin-top: 20px;
}

.service-info-item {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    font-size: 14px;
    color: var(--text-light);
}

.service-info-item i {
    color: var(--primary-color);
    font-size: 14px;
}

/* 服务流程 */
.service-process {
    margin-top: 60px;
}

.process-title {
    text-align: center;
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 40px;
    color: var(--text-color);
}

.process-steps {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.process-step {
    flex: 1;
    min-width: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.step-number {
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    margin-bottom: 15px;
}

.step-content h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-color);
}

.step-content p {
    font-size: 14px;
    color: var(--text-light);
}

.process-arrow {
    color: var(--primary-color);
    font-size: 20px;
    margin: 0 10px;
}

/* 联系我们 */
.contact {
    padding: 80px 0;
    background-color: var(--bg-white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 20px;
    background-color: var(--bg-light);
    border-radius: var(--border-radius);
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.info-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
    border-color: var(--primary-color);
}

.info-item i {
    font-size: 24px;
    color: var(--primary-color);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(52, 152, 219, 0.1);
    border-radius: 50%;
    flex-shrink: 0;
    margin-top: 5px;
}

.info-text h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 5px;
    color: var(--text-color);
}

.info-text p {
    color: var(--text-light);
    font-size: 14px;
    margin: 0;
}

.contact-map {
    background-color: var(--bg-light);
    border-radius: var(--border-radius);
    padding: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.map-placeholder {
    text-align: center;
    color: var(--text-light);
}

.map-placeholder i {
    font-size: 48px;
    margin-bottom: 20px;
    color: var(--primary-color);
    opacity: 0.5;
}

/* 页脚 */
.footer {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: white;
    padding: 60px 0 40px;
    margin-top: 40px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-info {
    display: flex;
    flex-direction: column;
    gap: 25px;
    transition: var(--transition);
}

.footer-info:hover {
    transform: translateY(-5px);
}

.footer-info .logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
}

.footer-info .logo-image {
    height: 40px;
    filter: drop-shadow(0 2px 4px rgba(255, 255, 255, 0.2));
}

.footer-info .logo-text {
    font-size: 24px;
    font-weight: 700;
    color: white;
    background: linear-gradient(135deg, #ffffff, #e0e0e0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-info p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.7;
    font-size: 15px;
    max-width: 400px;
    margin: 0;
    transition: var(--transition);
}

.footer-info:hover p {
    color: rgba(255, 255, 255, 0.95);
}

.footer-social {
    display: flex;
    gap: 15px;
    margin-top: 10px;
}

.social-link {
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    text-decoration: none;
}

.social-link:hover {
    background-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.4);
}

.footer-links h4 {
    font-size: 18px;
    margin-bottom: 20px;
    color: white;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
    font-size: 14px;
}

.footer-links a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.welcome-content,
.feature-card,
.service-card,
.info-item,
.process-step {
    animation: fadeInUp 0.6s ease-out;
}

.feature-card:nth-child(2),
.service-card:nth-child(2),
.info-item:nth-child(2),
.process-step:nth-child(2) {
    animation-delay: 0.2s;
}

.feature-card:nth-child(3),
.service-card:nth-child(3),
.info-item:nth-child(3),
.process-step:nth-child(3) {
    animation-delay: 0.4s;
}

.feature-card:nth-child(4),
.info-item:nth-child(4),
.process-step:nth-child(4) {
    animation-delay: 0.6s;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }
    
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background-color: white;
        flex-direction: column;
        align-items: flex-start;
        padding: 100px 30px 30px;
        box-shadow: -5px 0 20px rgba(0, 0, 0, 0.1);
        transition: right 0.4s cubic-bezier(0.16, 1, 0.3, 1);
        z-index: 999;
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .nav-links li {
        width: 100%;
        margin: 0;
    }
    
    .nav-links a {
        width: 100%;
        padding: 15px 0;
        border-bottom: 1px solid rgba(0, 0, 0, 0.05);
        border-radius: 0;
    }
    
    .nav-links a:hover {
        background-color: transparent;
        transform: translateX(5px);
    }
    
    .nav-links a::after {
        display: none;
    }
    
    .welcome-content h2 {
        font-size: 36px;
    }
    
    .welcome-content p {
        font-size: 18px;
    }
    
    .welcome-features {
        gap: 20px;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .process-steps {
        flex-direction: column;
        align-items: center;
        gap: 30px;
    }
    
    .process-step {
        min-width: 100%;
        flex-direction: row;
        align-items: flex-start;
        text-align: left;
        gap: 15px;
        position: relative;
        padding-bottom: 30px;
    }
    
    .step-number {
        flex-shrink: 0;
        margin-top: 5px;
    }
    
    .step-content {
        flex: 1;
    }
    
    .process-arrow {
        display: none;
    }
    
    .process-step:not(:last-child)::after {
        content: '';
        position: absolute;
        left: 20px;
        top: 40px;
        width: 2px;
        height: calc(100% - 10px);
        background-color: var(--primary-color);
        opacity: 0.3;
    }
    
    .process-step:last-child {
        padding-bottom: 0;
    }
    
    .process-step:last-child::after {
        display: none;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .section-title {
        font-size: 28px;
        margin-bottom: 40px;
    }
    
    .features,
    .service,
    .contact {
        padding: 60px 0;
    }
    
    .feature-card,
    .service-card {
        padding: 30px 20px;
    }
}

@media (max-width: 480px) {
    .logo h1 {
        font-size: 20px;
    }
    
    .welcome-content h2 {
        font-size: 28px;
    }
    
    .welcome-content p {
        font-size: 16px;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .info-item {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }
    
    .contact-map {
        padding: 20px;
    }
}