:root{
  --blue:#007ac5;
  --blue-dark:#005fa3;
  --dark:#232323;
  --gray-bg:#f7f8fa;
  --gray-bg2:#f3f4f8;
  --text:#333;
  --orange:#f08200;
}
*{box-sizing:border-box;}
body{margin:0;font-family:-apple-system,"Microsoft YaHei","PingFang SC","Segoe UI",Roboto,Arial,sans-serif;color:var(--text);line-height:1.7;background:#fff;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4{margin:0 0 .5em;font-weight:600;}
.container{max-width:1200px;margin:0 auto;padding:0 20px;}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:#fff;box-shadow:0 2px 10px rgba(0,0,0,.06);}
.header-inner{max-width:1300px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:12px 20px;}
.logo img{height:52px;width:auto;}
.main-nav{position:relative;z-index:50;}
.main-nav > ul{display:flex;gap:6px;}
.main-nav > ul > li{position:relative;}
.main-nav > ul > li > a{display:block;padding:14px 16px;font-size:15px;font-weight:500;color:var(--dark);border-bottom:3px solid transparent;transition:.2s;white-space:nowrap;}
.main-nav > ul > li:hover > a,.main-nav > ul > li.active > a{color:var(--blue);border-bottom-color:var(--blue);}
.dropdown{display:none;flex-direction:column;position:absolute;left:0;top:100%;background:#fff;min-width:220px;box-shadow:0 8px 24px rgba(0,0,0,.12);border-radius:0 0 6px 6px;overflow:hidden;padding:6px 0;z-index:60;}
.main-nav > ul > li:hover > .dropdown{display:flex;}
.dropdown li a{padding:10px 18px;display:block;font-size:14px;white-space:nowrap;color:var(--text);}
.dropdown li a:hover{background:var(--gray-bg);color:var(--blue);}
.header-right .phone{font-size:20px;font-weight:700;color:var(--blue);}
.nav-toggle{display:none;background:none;border:none;font-size:26px;color:var(--dark);}

/* Breadcrumb */
.breadcrumb{background:var(--gray-bg);padding:14px 0;font-size:14px;color:#888;margin-bottom:0;}
.breadcrumb a{color:#888;}
.breadcrumb a:hover{color:var(--blue);}

/* Hero carousel */
.hero{position:relative;overflow:hidden;color:#fff;height:520px;}
.hero-slide{position:absolute;inset:0;background:linear-gradient(120deg,#0a3a5c,#0d5f96) no-repeat center/cover;opacity:0;transition:opacity 1s ease;display:flex;align-items:center;justify-content:center;text-align:center;}
.hero-slide.active{opacity:1;z-index:1;}
.hero-slide::before{content:"";position:absolute;inset:0;background:rgba(0,20,40,.35);}
.hero-content{position:relative;z-index:2;max-width:760px;margin:0 auto;padding:0 20px;}
.hero-content .eyebrow{letter-spacing:2px;text-transform:uppercase;font-size:14px;opacity:.85;}
.hero-content h1{font-size:38px;margin:14px 0;}
.hero-content p{font-size:16px;opacity:.9;}
.hero-content .btn{margin-top:24px;}
.hero-dots{position:absolute;left:0;right:0;bottom:22px;z-index:3;display:flex;justify-content:center;gap:10px;}
.hero-dots button{width:10px;height:10px;border-radius:50%;border:2px solid #fff;background:transparent;cursor:pointer;padding:0;}
.hero-dots button.active{background:#fff;}

/* Side floating widget */
.side-widget{position:fixed;right:0;bottom:120px;z-index:200;display:flex;flex-direction:column;width:50px;background:#222;}
.side-widget .sw-row{display:flex;align-items:center;justify-content:center;width:50px;height:50px;border-bottom:1px solid rgba(255,255,255,.1);position:relative;cursor:pointer;}
.side-widget .sw-row.sw-tall{height:60px;}
.side-widget .sw-row:last-child{border-bottom:none;}
.side-widget .sw-row:hover{background:var(--blue);}
.side-widget .sw-icon{width:22px;height:22px;object-fit:contain;filter:brightness(0) invert(1);}
.side-widget .sw-pop{display:none;position:absolute;right:50px;top:0;background:var(--blue);color:#fff;box-shadow:0 6px 20px rgba(0,0,0,.2);padding:14px 18px;white-space:nowrap;font-size:14px;text-align:center;}
.side-widget .sw-row:hover .sw-pop{display:block;}
.side-widget .sw-pop-qr{background:#fff;color:var(--dark);padding:10px;}
.side-widget .sw-pop-qr img{width:110px;height:110px;display:block;margin:0 auto 4px;}

.btn{display:inline-block;padding:12px 30px;background:var(--blue);color:#fff;border-radius:2px;font-size:14px;letter-spacing:1px;transition:.2s;}
.btn:hover{background:var(--orange);}

/* Section */
section{padding:64px 0;}
.section-title{text-align:center;margin-bottom:40px;}
.section-title h2{font-size:28px;color:var(--dark);}
.section-title p{color:#888;font-size:14px;margin-top:8px;}
.bg-gray{background:var(--gray-bg);}

/* Grid cards */
.grid{display:grid;gap:26px;}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}
.card{background:#fff;border:1px solid #eee;border-radius:6px;overflow:hidden;transition:.25s;}
.card:hover{transform:translateY(-6px);box-shadow:0 14px 28px rgba(0,0,0,.1);border-color:transparent;}
.card .thumb{aspect-ratio:4/3;overflow:hidden;background:#f2f2f2;}
.card .thumb img{width:100%;height:100%;object-fit:cover;}
.card .cap{padding:14px 16px;font-size:15px;text-align:center;}

/* Advantages */
.adv{text-align:center;}
.adv img{width:56px;height:56px;margin:0 auto 16px;}
.adv h3{font-size:18px;}
.adv p{color:#888;font-size:14px;}

/* Fan / advantages-6 layout */
.fan-layout{display:flex;align-items:center;justify-content:center;gap:40px;flex-wrap:wrap;}
.fan-col{display:flex;flex-direction:column;gap:44px;flex:0 0 260px;}
.fan-item{text-align:center;}
.fan-item .fan-num{font-size:30px;font-weight:700;color:#ccc;display:block;}
.fan-item h3{font-size:18px;margin:4px 0 6px;}
.fan-item p{color:#888;font-size:13px;margin:0;}
.fan-center{flex:0 0 300px;width:300px;height:300px;border-radius:50%;overflow:hidden;box-shadow:0 10px 30px rgba(0,0,0,.12);}
.fan-center img{width:100%;height:100%;object-fit:cover;}
@media (max-width:900px){
  .fan-layout{flex-direction:column;}
  .fan-col{flex-direction:row;flex-wrap:wrap;justify-content:center;gap:24px;}
  .fan-center{order:-1;width:220px;height:220px;}
}

/* About */
.about-flex{display:flex;gap:50px;align-items:center;}
.about-flex .text{flex:1;}
.about-flex .img{flex:1;}
.about-flex .img img{border-radius:6px;}
.stats{display:flex;justify-content:space-between;text-align:center;margin-top:40px;flex-wrap:wrap;gap:20px;}
.stats .stat b{display:block;font-size:30px;color:var(--blue);}
.stats .stat span{font-size:13px;color:#888;}

/* Sub nav (category tabs) */
.sub-nav{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:40px;}
.sub-nav a{padding:9px 22px;border:1px solid #ddd;border-radius:20px;font-size:14px;}
.sub-nav a.active,.sub-nav a:hover{background:var(--blue);color:#fff;border-color:var(--blue);}

/* News */
.news-list{display:flex;flex-direction:column;gap:0;}
.news-item{display:flex;gap:26px;padding:26px 0;border-bottom:1px solid #eee;}
.news-item .thumb{width:220px;flex:none;aspect-ratio:4/3;overflow:hidden;border-radius:4px;background:#f2f2f2;}
.news-item .thumb img{width:100%;height:100%;object-fit:cover;}
.news-item .meta{color:#999;font-size:13px;margin:6px 0 10px;}
.news-item h3{font-size:18px;}
.news-item h3 a:hover{color:var(--blue);}
.news-item p{color:#777;font-size:14px;}
.news-item .more{color:var(--blue);font-size:13px;}
.news-cat-anchor{padding-top:90px;margin-top:-90px;}

.article h1{font-size:26px;margin-bottom:6px;}
.article .meta{color:#999;font-size:13px;border-bottom:1px solid #eee;padding-bottom:20px;margin-bottom:24px;}
.article .body p{margin:0 0 1em;color:#444;}
.article-nav{display:flex;justify-content:space-between;padding:20px 0;border-top:1px solid #eee;margin-top:30px;font-size:14px;}

/* Workshop / certificate grids */
.photo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.photo-grid img{border-radius:6px;aspect-ratio:4/3;object-fit:cover;}

/* Contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;}
.contact-info p{margin:.4em 0;}
.contact-info h3{margin-bottom:16px;}
.form-group{margin-bottom:16px;}
.form-group label{display:block;font-size:14px;margin-bottom:6px;color:#666;}
.form-group input,.form-group textarea{width:100%;padding:11px 14px;border:1px solid #ddd;border-radius:4px;font-size:14px;font-family:inherit;}
.form-group textarea{min-height:120px;resize:vertical;}

/* Footer */
.site-footer{background:var(--dark);color:#bbb;padding:56px 0 0;}
.footer-inner{max-width:1300px;margin:0 auto;padding:0 20px;display:flex;gap:40px;flex-wrap:wrap;}
.footer-col{flex:1;min-width:170px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;}
.footer-col a{display:block;color:#999;font-size:13px;margin-bottom:10px;}
.footer-col a:hover{color:var(--blue);}
.footer-col p{font-size:13px;color:#999;margin:0 0 8px;}
.footer-brand .footer-logo{height:40px;margin-bottom:14px;}
.footer-bottom{text-align:center;font-size:12px;color:#777;padding:26px 0;margin-top:30px;border-top:1px solid #333;}

/* Responsive */
@media (max-width:900px){
  .main-nav{display:none;}
  .nav-toggle{display:block;}
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr);}
  .about-flex{flex-direction:column;}
  .contact-grid{grid-template-columns:1fr;}
  .photo-grid{grid-template-columns:repeat(2,1fr);}
  .news-item{flex-direction:column;}
  .news-item .thumb{width:100%;}
}