* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
    line-height: 1.6;
    color: #333;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    height: 80px;
    background: rgba(255, 255, 255, 0.01);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
    box-shadow: 0 2px 20px rgba(0,0,0,0.1);
}

.navbar.scrolled {
    background: rgba(241, 141, 0, 0.95);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    box-shadow: 0 4px 30px rgba(0,0,0,0.15);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}

.nav-brand {
    font-size: 20px;
    font-weight: 500;
    color: white;
    letter-spacing: 1px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.nav-menu {
    display: flex;
    list-style: none;
}

.nav-menu li {
    position: relative;
}

.nav-link {
    display: block;
    padding: 0 30px;
    line-height: 80px;
    color: white;
    text-decoration: none;
    font-size: 16px;
    transition: background 0.3s;
}

.nav-link:hover {
    background: rgba(255,255,255,0.2);
}

.nav-link.active {
    background: rgba(255,255,255,0.2);
}

.navbar.scrolled .nav-link:hover,
.navbar.scrolled .nav-link.active {
    background: rgba(0,0,0,0.1);
}

/* 首页轮播 */
.section-home {
    margin-top: 0;
}

.swiper-container {
    width: 100%;
    height: 100vh;
    min-height: 600px;
    position: relative;
    overflow: hidden;
}

.swiper-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    transition: transform 0.5s ease;
}

.swiper-slide {
    width: 100%;
    height: 100%;
    flex-shrink: 0;
    position: relative;
}

.swiper-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.slide-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: white;
    z-index: 10;
}

.slide-text h1 {
    font-size: 48px;
    margin-bottom: 20px;
    text-shadow: 2px 2px 8px rgba(0,0,0,0.7);
}

.slide-text p {
    font-size: 24px;
    text-shadow: 2px 2px 8px rgba(0,0,0,0.7);
}

.swiper-pagination {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.swiper-pagination-bullet {
    width: 12px;
    height: 12px;
    background: rgba(255,255,255,0.5);
    border-radius: 50%;
    cursor: pointer;
    transition: background 0.3s;
}

.swiper-pagination-bullet-active {
    background: white;
}

/* 公司介绍 */
.section-about {
    padding: 80px 0;
    background: #f5f5f5;
}

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

.section-title {
    text-align: center;
    font-size: 36px;
    color: #333;
    margin-bottom: 50px;
}

.about-content {
    display: flex;
    gap: 50px;
    align-items: center;
}

.about-left {
    flex: 1;
}

.about-left img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.about-right {
    flex: 1;
}

.about-right p {
    font-size: 16px;
    line-height: 2;
    color: #666;
    text-align: justify;
}

/* 合作伙伴 */
.section-partners {
    padding: 80px 0;
    background: white;
}

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

.partners-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.partner-item {
    background: #f9f9f9;
    padding: 20px;
    border-radius: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 120px;
    transition: transform 0.3s, box-shadow 0.3s;
}

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

.partner-item img {
    max-width: 100%;
    max-height: 80px;
    object-fit: contain;
}

.partner-placeholder {
    width: 100%;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #e8e8e8;
    color: #999;
    font-size: 14px;
    border-radius: 5px;
}

/* 联系我们 */
.section-contact {
    padding: 80px 0;
    background: #f5f5f5;
}

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

.contact-content {
    text-align: center;
}

.contact-item {
    margin: 20px 0;
    font-size: 18px;
}

.contact-label {
    font-weight: bold;
    color: #333;
    margin-right: 10px;
}

.contact-value {
    color: #666;
}

/* 底部 */
.footer {
    background: #333;
    color: white;
    text-align: center;
    padding: 20px 0;
}

.footer-brand {
    margin-bottom: 15px;
}

.footer-company {
    font-size: 14px;
    color: #999;
    letter-spacing: 1px;
}

.footer p {
    font-size: 13px;
    margin: 5px 0;
    color: #999;
}

.footer a {
    color: #aaa;
    text-decoration: none;
    transition: color 0.3s;
}

.footer a:hover {
    color: #F18D00;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar {
        height: 50px;
    }
    
    .nav-container {
        padding: 0 15px;
    }
    
    .nav-brand {
        font-size: 16px;
    }
    
    .nav-menu {
        display: none;
    }
    
    .section-home {
        margin-top: 0;
    }
    
    .swiper-container {
        height: 100vh;
        min-height: 400px;
    }
    
    .slide-text h1 {
        font-size: 28px;
    }
    
    .slide-text p {
        font-size: 18px;
    }
    
    .about-content {
        flex-direction: column;
        gap: 30px;
    }
    
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .section-title {
        font-size: 28px;
        margin-bottom: 30px;
    }
    
    .section-about,
    .section-partners,
    .section-contact {
        padding: 50px 0;
    }
}

@media (max-width: 480px) {
    .nav-brand {
        font-size: 14px;
    }
    
    .slide-text h1 {
        font-size: 24px;
        margin-bottom: 15px;
    }
    
    .slide-text p {
        font-size: 16px;
    }
    
    .partners-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .about-right p {
        font-size: 14px;
    }
    
    .contact-item {
        font-size: 16px;
    }
}