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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    color: #1a1a2e;
    line-height: 1.6;
    background: #fff;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s;
}

ul {
    list-style: none;
}

/* 顶部导航 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    z-index: 1000;
    padding: 15px 0;
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.logo-icon {
    display: flex;
    gap: 3px;
    align-items: flex-end;
}

.logo-icon span {
    display: block;
    width: 4px;
    background: #ff6b35;
    border-radius: 2px;
}

.logo-icon span:nth-child(1) {
    height: 20px;
}

.logo-icon span:nth-child(2) {
    height: 30px;
}

.logo-icon span:nth-child(3) {
    height: 25px;
}

.logo-text {
    font-size: 24px;
    font-weight: bold;
    color: #1a1a2e;
}

.nav {
    display: flex;
    gap: 30px;
}

.nav a {
    font-size: 15px;
    color: #1a1a2e;
    font-weight: 500;
    position: relative;
}

.nav a:hover {
    color: #ff6b35;
}

.nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #ff6b35;
    transition: width 0.3s;
}

.nav a:hover::after {
    width: 100%;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: 5px;
    background: none;
    border: none;
    font-size: 14px;
    cursor: pointer;
    color: #666;
}

.apply-btn {
    background: #ff6b35;
    color: #fff;
    border: none;
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 14px;
    cursor: pointer;
    transition: background 0.3s;
}

.apply-btn:hover {
    background: #e55a2b;
}

/* 轮播Banner区域 */
.banner-section {
    margin-top: 70px;
    background: linear-gradient(135deg, #f8f9ff 0%, #fff 100%);
    padding: 60px 0;
}

.banner-container {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
}

.banner-slides {
    position: relative;
    overflow: hidden;
}

.banner-slide {
    display: none;
    animation: fadeIn 0.5s ease;
}

.banner-slide.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.slide-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 40px;
    min-height: 400px;
}

.slide-text {
    flex: 1;
    max-width: 500px;
}

.highlight-text {
    display: flex;
    align-items: baseline;
    gap: 10px;
    margin-bottom: 10px;
}

.big-number {
    font-size: 72px;
    font-weight: bold;
    color: #ff6b35;
    line-height: 1;
}

.slide-text h2 {
    font-size: 42px;
    color: #1a1a2e;
    margin-bottom: 15px;
}

.subtitle {
    font-size: 24px;
    color: #ff6b35;
    font-weight: 500;
    margin-bottom: 10px;
}

.desc {
    font-size: 18px;
    color: #666;
    margin-bottom: 30px;
}

.features {
    margin-bottom: 30px;
}

.features li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    font-size: 16px;
    color: #1a1a2e;
}

.features li i {
    color: #ff6b35;
}

.cta-btn {
    background: #1a1a2e;
    color: #fff;
    border: none;
    padding: 12px 40px;
    border-radius: 25px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s;
}

.cta-btn:hover {
    background: #ff6b35;
    transform: translateY(-2px);
}

.cta-btn.large {
    padding: 15px 50px;
    font-size: 18px;
}

.slide-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.placeholder-img {
    width: 400px;
    height: 300px;
    background: linear-gradient(135deg, #ff6b35 0%, #ff8c5a 100%);
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #fff;
}

.placeholder-img.blue {
    background: linear-gradient(135deg, #1a1a2e 0%, #2d2d4a 100%);
}

.placeholder-img i {
    font-size: 80px;
    margin-bottom: 20px;
}

.placeholder-img p {
    font-size: 24px;
    font-weight: 500;
}

.banner-indicators {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
}

.indicator {
    width: 40px;
    height: 4px;
    background: #ddd;
    border-radius: 2px;
    cursor: pointer;
    transition: background 0.3s;
}

.indicator.active {
    background: #ff6b35;
}

/* 核心服务介绍 */
.service-section {
    padding: 80px 0;
    background: #fff;
}

.service-tabs {
    display: flex;
    gap: 20px;
    margin-bottom: 50px;
}

.tab-btn {
    background: none;
    border: none;
    font-size: 18px;
    padding: 10px 30px;
    cursor: pointer;
    color: #666;
    position: relative;
    transition: color 0.3s;
}

.tab-btn.active {
    color: #ff6b35;
    font-weight: 600;
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 3px;
    background: #ff6b35;
    border-radius: 2px;
}

.service-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 50px;
}

.service-intro h2 {
    font-size: 32px;
    color: #1a1a2e;
    margin-bottom: 20px;
}

.service-intro p {
    color: #666;
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 20px;
}

.learn-more {
    color: #ff6b35;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    transition: gap 0.3s;
}

.learn-more:hover {
    gap: 10px;
}

.card-brands {
    display: flex;
    gap: 15px;
    margin-top: 30px;
}

.brand-item {
    width: 50px;
    height: 35px;
    background: #f5f5f5;
    border-radius: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: #1a1a2e;
}

.service-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background: #fff;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #ff6b35 0%, #ff8c5a 100%);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.feature-icon i {
    font-size: 28px;
    color: #fff;
}

.feature-card h3 {
    font-size: 18px;
    color: #1a1a2e;
    margin-bottom: 15px;
}

.feature-card ul li {
    padding: 8px 0;
    color: #666;
    font-size: 14px;
    border-bottom: 1px solid #f5f5f5;
}

.feature-card ul li:last-child {
    border-bottom: none;
}

/* 合作伙伴 */
.partners-section {
    padding: 60px 0;
    background: #f8f9ff;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.partner-item {
    height: 60px;
    background: #fff;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: #999;
    transition: color 0.3s, transform 0.3s;
}

.partner-item:hover {
    color: #ff6b35;
    transform: scale(1.1);
}

.more-btn {
    display: block;
    margin: 0 auto;
    background: none;
    border: 2px solid #ff6b35;
    color: #ff6b35;
    padding: 10px 40px;
    border-radius: 25px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s;
}

.more-btn:hover {
    background: #ff6b35;
    color: #fff;
}

/* CTA区域 */
.cta-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #1a1a2e 0%, #2d2d4a 100%);
    text-align: center;
    color: #fff;
}

.cta-section h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

.cta-section p {
    font-size: 18px;
    color: #ccc;
    margin-bottom: 30px;
}

.cta-section .cta-btn {
    background: #ff6b35;
}

.cta-section .cta-btn:hover {
    background: #fff;
    color: #1a1a2e;
}

/* 页脚 */
.footer {
    background: #1a1a2e;
    color: #fff;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    font-size: 16px;
    margin-bottom: 20px;
    color: #fff;
}

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

.footer-col ul li a {
    color: #aaa;
    font-size: 14px;
    transition: color 0.3s;
}

.footer-col ul li a:hover {
    color: #ff6b35;
}

.footer-col .phone {
    font-size: 24px;
    font-weight: bold;
    color: #ff6b35;
}

.footer-bottom {
    border-top: 1px solid #2d2d4a;
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    color: #888;
    font-size: 14px;
}

.footer-links {
    display: flex;
    gap: 10px;
    color: #888;
    font-size: 14px;
}

.footer-links a {
    color: #888;
}

.footer-links a:hover {
    color: #ff6b35;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .service-content {
        grid-template-columns: 1fr;
    }
    
    .service-features {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .partners-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    .slide-content {
        flex-direction: column;
        text-align: center;
    }
    
    .slide-text {
        margin-bottom: 30px;
    }
    
    .big-number {
        font-size: 48px;
    }
    
    .slide-text h2 {
        font-size: 28px;
    }
    
    .service-features {
        grid-template-columns: 1fr;
    }
    
    .partners-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .placeholder-img {
        width: 280px;
        height: 200px;
    }
    
    .placeholder-img i {
        font-size: 50px;
    }
    
    .placeholder-img p {
        font-size: 18px;
    }
    
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}