/* 基础重置 */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;line-height:1.6;color:#333;background:#f5f7fa;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit;transition:color .3s}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* 头部导航 */
.header{background:#fff;box-shadow:0 2px 10px rgba(0,0,0,.08);position:sticky;top:0;z-index:1000}
.header .container{display:flex;align-items:center;justify-content:space-between;height:70px}
.logo h2{font-size:22px;color:#1a56db;font-weight:700;letter-spacing:1px}
.nav{display:flex;gap:30px}
.nav a{font-size:15px;color:#555;font-weight:500;position:relative;padding:5px 0}
.nav a::after{content:'';position:absolute;bottom:0;left:0;width:0;height:2px;background:#1a56db;transition:width .3s}
.nav a:hover{color:#1a56db}
.nav a:hover::after{width:100%}
.mobile-menu{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:10px}
.mobile-menu span{width:24px;height:2px;background:#333;transition:.3s}

/* 主横幅 */
.hero{background:linear-gradient(135deg,#1a56db 0%,#0e3baa 100%);color:#fff;padding:80px 0 60px;text-align:center}
.hero-title{font-size:42px;font-weight:800;margin-bottom:15px;text-shadow:0 2px 4px rgba(0,0,0,.2)}
.hero-subtitle{font-size:18px;opacity:.9;margin-bottom:40px}
.hero-contact{display:flex;justify-content:center;gap:30px;flex-wrap:wrap}
.contact-item{display:flex;align-items:center;gap:12px;background:rgba(255,255,255,.15);backdrop-filter:blur(10px);border-radius:12px;padding:18px 25px;min-width:220px}
.contact-item .icon{font-size:28px}
.contact-item strong{display:block;font-size:13px;opacity:.8;margin-bottom:4px}
.contact-item a,.contact-item .wechat-id{font-size:17px;font-weight:600;color:#fff}
.contact-item a:hover{text-decoration:underline}
.copy-btn{background:rgba(255,255,255,.25);border:1px solid rgba(255,255,255,.4);color:#fff;padding:4px 12px;border-radius:6px;font-size:12px;cursor:pointer;margin-left:8px;transition:.3s}
.copy-btn:hover{background:rgba(255,255,255,.4)}

/* 通用标题 */
.section-title{font-size:32px;font-weight:700;text-align:center;margin-bottom:15px;color:#1a1a1a;position:relative}
.section-title::after{content:'';display:block;width:60px;height:3px;background:#1a56db;margin:12px auto 0;border-radius:2px}

/* 关于我们 */
.about{padding:80px 0;background:#fff}
.about-content{display:grid;grid-template-columns:2fr 1fr;gap:40px;margin-top:40px}
.about-text h3{font-size:22px;color:#1a56db;margin:25px 0 12px;font-weight:600}
.about-text h3:first-child{margin-top:0}
.about-text p{font-size:15px;color:#555;line-height:1.8;margin-bottom:12px}
.about-info{display:flex;flex-direction:column;gap:20px}
.info-card{background:#f8fafc;border-radius:12px;padding:20px;border-left:4px solid #1a56db}
.info-card h4{font-size:14px;color:#888;margin-bottom:8px;font-weight:500}
.info-card p{font-size:16px;color:#333;font-weight:600}

/* 服务项目 */
.service{padding:80px 0;background:#f5f7fa}
.service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:25px;margin-top:40px}
.service-card{background:#fff;border-radius:16px;padding:35px 25px;text-align:center;box-shadow:0 4px 20px rgba(0,0,0,.06);transition:transform .3s,box-shadow .3s}
.service-card:hover{transform:translateY(-5px);box-shadow:0 8px 30px rgba(0,0,0,.12)}
.service-icon{font-size:42px;margin-bottom:18px}
.service-card h3{font-size:18px;color:#333;margin-bottom:12px;font-weight:600}
.service-card p{font-size:14px;color:#666;line-height:1.7}

/* 联系方式 */
.contact{padding:80px 0;background:#fff}
.contact-desc{text-align:center;color:#666;font-size:16px;margin-top:10px;margin-bottom:40px}
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.contact-card{background:linear-gradient(145deg,#f8fafc,#fff);border-radius:16px;padding:35px 25px;text-align:center;border:1px solid #e8ecf1;transition:box-shadow .3s}
.contact-card:hover{box-shadow:0 8px 30px rgba(26,86,219,.1)}
.contact-icon{font-size:40px;margin-bottom:15px}
.contact-card h3{font-size:18px;color:#333;margin-bottom:15px;font-weight:600}
.contact-value{font-size:20px;font-weight:700;color:#1a56db;margin-bottom:18px}
.contact-value a{color:#1a56db}
.contact-value a:hover{text-decoration:underline}
.copy-btn.large{background:#1a56db;color:#fff;border:none;padding:10px 24px;border-radius:8px;font-size:14px;cursor:pointer;transition:.3s;font-weight:500}
.copy-btn.large:hover{background:#1545b8}
.visit-btn{display:inline-block;background:#1a56db;color:#fff;padding:10px 24px;border-radius:8px;font-size:14px;transition:.3s;font-weight:500}
.visit-btn:hover{background:#1545b8}
.contact-note{font-size:13px;color:#888;margin-top:12px}
.contact-address{text-align:center;margin-top:50px;padding:30px;background:#f8fafc;border-radius:12px}
.contact-address h3{font-size:20px;color:#333;margin-bottom:12px}
.contact-address p{font-size:15px;color:#555;margin:5px 0}

/* 新闻资讯 */
.news{padding:80px 0;background:#f5f7fa}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px;margin-top:40px}
.news-card{background:#fff;border-radius:16px;padding:30px;box-shadow:0 4px 20px rgba(0,0,0,.06);transition:transform .3s}
.news-card:hover{transform:translateY(-3px)}
.news-card h3{font-size:17px;color:#333;margin-bottom:10px;font-weight:600;line-height:1.5}
.news-date{font-size:13px;color:#999;margin-bottom:12px}
.news-summary{font-size:14px;color:#666;line-height:1.7;margin-bottom:15px}
.read-more{font-size:14px;color:#1a56db;font-weight:500}
.read-more:hover{color:#1545b8}

/* 常见问题 */
.faq{padding:80px 0;background:#fff}
.faq-list{max-width:800px;margin:40px auto 0}
.faq-item{background:#f8fafc;border-radius:12px;padding:25px 30px;margin-bottom:15px;border-left:4px solid #1a56db}
.faq-item h3{font-size:16px;color:#333;margin-bottom:10px;font-weight:600}
.faq-item p{font-size:14px;color:#555;line-height:1.7}

/* 底部 */
.footer{background:#1a1a2e;color:#ccc;padding:60px 0 0}
.footer-content{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-section h4{font-size:16px;color:#fff;margin-bottom:18px;font-weight:600}
.footer-section p{font-size:14px;margin-bottom:8px;line-height:1.6}
.footer-section a{display:block;font-size:14px;margin-bottom:8px;color:#ccc;transition:color .3s}
.footer-section a:hover{color:#1a56db}
.footer-bottom{text-align:center;padding:20px 0;font-size:13px;color:#888}

/* 悬浮按钮 */
.float-contact{position:fixed;right:20px;bottom:30px;display:flex;flex-direction:column;gap:12px;z-index:999}
.float-btn{display:flex;align-items:center;gap:8px;background:#1a56db;color:#fff;padding:12px 18px;border-radius:50px;font-size:14px;font-weight:500;box-shadow:0 4px 15px rgba(26,86,219,.4);transition:.3s}
.float-btn:hover{transform:scale(1.05);box-shadow:0 6px 20px rgba(26,86,219,.5)}
.float-btn.web{background:#059669}
.float-btn.web:hover{box-shadow:0 6px 20px rgba(5,150,105,.5)}
.float-text{display:inline}

/* 复制提示 */
.copy-toast{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background:rgba(0,0,0,.8);color:#fff;padding:12px 24px;border-radius:8px;font-size:14px;z-index:10000;animation:fadeInOut 1.5s ease}
@keyframes fadeInOut{0%{opacity:0}15%{opacity:1}85%{opacity:1}100%{opacity:0}}

/* 响应式 */
@media(max-width:1024px){
    .service-grid{grid-template-columns:repeat(2,1fr)}
    .about-content{grid-template-columns:1fr}
    .footer-content{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
    .nav{display:none;position:absolute;top:70px;left:0;right:0;background:#fff;flex-direction:column;padding:20px;gap:15px;box-shadow:0 4px 10px rgba(0,0,0,.1)}
    .nav.active{display:flex}
    .mobile-menu{display:flex}
    .hero-title{font-size:28px}
    .hero-subtitle{font-size:15px}
    .hero-contact{flex-direction:column;align-items:center;gap:15px}
    .contact-item{min-width:auto;width:100%;max-width:320px}
    .section-title{font-size:24px}
    .service-grid{grid-template-columns:1fr}
    .contact-grid{grid-template-columns:1fr}
    .news-grid{grid-template-columns:1fr}
    .footer-content{grid-template-columns:1fr}
    .float-text{display:none}
    .float-btn{padding:14px;border-radius:50%}
}