:root{
  --primary:#0ea5e9; --primary-dark:#0369a1; --primary-soft:#e0f2fe;
  --accent:#fb923c; --accent-dark:#ea580c; --accent-soft:#ffedd5;
  --ink:#16222e; --muted:#5b6b7b; --bg:#ffffff; --bg-soft:#f4f9ff; --line:#e4edf5;
  --radius:16px; --shadow:0 10px 30px rgba(14,53,89,.08); --shadow-lg:0 18px 50px rgba(14,53,89,.14);
  --maxw:1180px;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{font-family:"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased;}
a{color:inherit;text-decoration:none;} img{max-width:100%;display:block;}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border-radius:999px;font-weight:600;font-size:15px;cursor:pointer;border:none;transition:transform .15s,box-shadow .15s,background .15s;}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(251,146,60,.35);}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-2px);}
.btn-ghost{background:#fff;color:var(--primary-dark);border:2px solid var(--primary);}
.btn-ghost:hover{background:var(--primary-soft);transform:translateY(-2px);}
.eyebrow{display:inline-block;color:var(--primary-dark);font-weight:700;letter-spacing:.12em;text-transform:uppercase;font-size:13px;margin-bottom:10px;}
.section{padding:84px 0;} .section.soft{background:var(--bg-soft);}
.section-head{text-align:center;max-width:720px;margin:0 auto 48px;}
.section-head h2{font-size:clamp(26px,3.4vw,38px);line-height:1.2;}
.section-head p{color:var(--muted);margin-top:12px;font-size:17px;}
.more-link{color:var(--primary-dark);font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.more-link:hover{gap:10px;}
.divider{height:1px;background:var(--line);border:0;margin:0;}

/* Header */
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px;}
.logo{display:flex;align-items:center;gap:12px;font-weight:800;font-size:19px;color:var(--primary-dark);}
.logo .mark{width:40px;height:40px;border-radius:12px;flex:none;background:linear-gradient(135deg,var(--primary),var(--primary-dark));display:grid;place-items:center;color:#fff;font-size:20px;box-shadow:var(--shadow);}
.logo small{display:block;font-size:11px;font-weight:600;color:var(--muted);letter-spacing:.05em;}
.menu{display:flex;align-items:center;gap:4px;}
.menu a{padding:8px 14px;border-radius:10px;font-weight:600;color:var(--ink);font-size:15px;}
.menu a:hover{background:var(--primary-soft);color:var(--primary-dark);}
.menu a.active{color:var(--primary-dark);background:var(--primary-soft);}
.nav-cta{display:flex;align-items:center;gap:10px;}
.lang-switch{font-size:14px;font-weight:600;color:var(--muted);padding:8px 12px;border:1px solid var(--line);border-radius:10px;}
.lang-switch:hover{color:var(--primary-dark);border-color:var(--primary);}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px;}
.hamburger span{width:24px;height:3px;background:var(--ink);border-radius:3px;}

/* Hero */
.hero{position:relative;overflow:hidden;background:linear-gradient(160deg,#e8f6ff 0%,#fdf3ea 100%);}
.hero .wrap{position:relative;z-index:2;padding:92px 24px;}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;}
.hero h1{font-size:clamp(34px,5vw,56px);line-height:1.1;letter-spacing:-.5px;}
.hero h1 .hl{color:var(--primary-dark);}
.hero p.lead{font-size:19px;color:var(--muted);margin:20px 0 30px;max-width:520px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;}
.hero-badges{display:flex;gap:26px;margin-top:40px;flex-wrap:wrap;}
.hero-badges div{font-size:14px;color:var(--muted);}
.hero-badges strong{display:block;font-size:26px;color:var(--ink);font-weight:800;}
.hero-visual{position:relative;border-radius:28px;min-height:380px;background:linear-gradient(150deg,var(--primary),var(--primary-dark) 60%,var(--accent-dark));box-shadow:var(--shadow-lg);display:grid;place-items:center;color:#fff;overflow:hidden;background-size:cover;background-position:center;}
.hero-visual .stars{position:absolute;inset:0;opacity:.25;}
.hero-visual .inner{position:relative;z-index:2;text-align:center;padding:30px;}
.hero-visual .inner .big{font-size:64px;}
.hero-visual .inner h3{font-size:22px;margin-top:8px;}
.hero-visual .inner p{opacity:.9;margin-top:6px;font-size:15px;}

/* Department / expert grids */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.dept-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:transform .18s,box-shadow .18s,border-color .18s;text-decoration:none;}
.dept-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--primary);}
.dept-icon{width:56px;height:56px;border-radius:14px;display:grid;place-items:center;font-size:28px;background:var(--accent-soft);margin-bottom:16px;}
.dept-card h3{font-size:19px;} .dept-card .zh{color:var(--muted);font-size:14px;}
.dept-card p{color:var(--muted);font-size:14.5px;margin-top:10px;}
.experts{gap:26px;}
.expert-card{text-align:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 22px;transition:transform .18s,box-shadow .18s;text-decoration:none;}
.expert-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
.avatar{width:96px;height:96px;border-radius:50%;margin:0 auto 16px;background:linear-gradient(135deg,var(--primary-soft),var(--accent-soft));display:grid;place-items:center;color:var(--primary-dark);font-size:34px;font-weight:800;border:3px solid #fff;box-shadow:var(--shadow);background-size:cover;background-position:center;overflow:hidden;}
.avatar img{width:100%;height:100%;object-fit:cover;}
.expert-card h3{font-size:18px;} .expert-card .title{color:var(--accent-dark);font-weight:600;font-size:14px;margin-top:2px;}
.expert-card .desc{color:var(--muted);font-size:14px;margin-top:12px;}

/* News / lectures */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:40px;}
.list-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;}
.list-card h3{font-size:22px;display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;}
.news-item{display:flex;gap:16px;padding:16px 0;border-bottom:1px dashed var(--line);text-decoration:none;}
.news-item:last-of-type{border-bottom:none;}
.news-date{flex:none;width:56px;height:56px;border-radius:12px;background:var(--primary-soft);color:var(--primary-dark);display:grid;place-items:center;text-align:center;font-weight:800;line-height:1.1;}
.news-date span{font-size:12px;font-weight:600;display:block;}
.news-item .title-link{font-weight:600;color:var(--ink);}
.news-item .title-link:hover{color:var(--primary-dark);}
.news-item p{color:var(--muted);font-size:13.5px;margin-top:3px;}

/* About + counters */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.about-visual{border-radius:24px;min-height:320px;background:linear-gradient(150deg,#fff7ed,#e0f2fe);border:1px solid var(--line);display:grid;place-items:center;font-size:80px;background-size:cover;background-position:center;}
.about-text h2{font-size:clamp(26px,3.2vw,34px);}
.about-text p{color:var(--muted);margin:16px 0 24px;font-size:16.5px;}
.counters{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.counter{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px 14px;text-align:center;}
.counter .num{font-size:32px;font-weight:800;color:var(--primary-dark);}
.counter .lbl{font-size:13px;color:var(--muted);margin-top:4px;}

/* Insurance */
.insurance{background:linear-gradient(135deg,var(--primary-dark),var(--primary));color:#fff;border-radius:24px;padding:56px;text-align:center;position:relative;overflow:hidden;}
.insurance h2{font-size:clamp(24px,3vw,32px);}
.insurance p{opacity:.92;margin:14px auto 28px;max-width:640px;font-size:17px;}
.insurance .partners{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:8px;}
.insurance .partners span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);padding:8px 16px;border-radius:999px;font-size:14px;font-weight:600;}

/* Footer */
footer{background:#0d1b2a;color:#c9d6e2;padding:60px 0 28px;}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;}
footer h4{color:#fff;font-size:16px;margin-bottom:16px;}
footer a{color:#c9d6e2;display:block;padding:5px 0;font-size:14.5px;}
footer a:hover{color:#fff;}
.foot-contact p{font-size:14.5px;margin:6px 0;} .foot-contact strong{color:#fff;}
.foot-bottom{border-top:1px solid #1f2f40;margin-top:40px;padding-top:20px;font-size:13.5px;color:#8aa0b5;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;}

/* ===== Sub-page components ===== */
.page-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,var(--primary-dark),var(--primary));color:#fff;padding:120px 0 70px;}
.page-banner.cover{background-size:cover;background-position:center;}
.page-banner.cover::after{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(3,105,161,.82),rgba(14,165,233,.55));}
.page-banner .wrap{position:relative;z-index:2;}
.page-banner h1{font-size:clamp(30px,4.5vw,48px);}
.page-banner p{opacity:.95;margin-top:12px;font-size:18px;max-width:640px;}
.breadcrumb{font-size:14px;color:rgba(255,255,255,.85);margin-bottom:14px;}
.breadcrumb a{color:rgba(255,255,255,.9);} .breadcrumb a:hover{text-decoration:underline;}
.breadcrumb span{margin:0 8px;opacity:.6;}

.layout{display:grid;grid-template-columns:280px 1fr;gap:48px;align-items:start;}
.sidebar{position:sticky;top:92px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;align-self:start;}
.sidebar h4{font-size:15px;color:var(--primary-dark);margin:6px 10px 10px;}
.sidebar a{display:flex;align-items:center;gap:10px;padding:11px 12px;border-radius:10px;font-weight:600;color:var(--ink);font-size:15px;}
.sidebar a .ico{font-size:18px;}
.sidebar a:hover{background:var(--primary-soft);color:var(--primary-dark);}
.sidebar a.active{background:var(--primary);color:#fff;}

.article{max-width:820px;}
.article h2{font-size:clamp(24px,3vw,32px);margin-bottom:14px;line-height:1.25;}
.article h3{font-size:21px;margin:30px 0 12px;color:var(--primary-dark);}
.article p{color:#37444f;margin:14px 0;font-size:16.5px;}
.article ul{margin:12px 0 12px 22px;color:#37444f;font-size:16px;}
.article ul li{margin:8px 0;}
.article .lead{font-size:18px;color:var(--muted);}
.article img{border-radius:14px;margin:22px 0;box-shadow:var(--shadow);width:100%;}
.article .figure-cap{font-size:13.5px;color:var(--muted);margin-top:-12px;margin-bottom:18px;text-align:center;}
.meta{display:flex;gap:18px;flex-wrap:wrap;color:var(--muted);font-size:14px;margin:10px 0 24px;padding-bottom:18px;border-bottom:1px solid var(--line);}
.meta span{display:inline-flex;align-items:center;gap:6px;}
.tag{display:inline-block;background:var(--accent-soft);color:var(--accent-dark);font-weight:700;font-size:12px;padding:5px 12px;border-radius:999px;}

.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:36px;}
.info-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;}
.info-card h3{font-size:19px;margin-bottom:14px;display:flex;align-items:center;gap:10px;}
.info-card .row{display:flex;gap:12px;padding:10px 0;border-bottom:1px dashed var(--line);}
.info-card .row:last-child{border-bottom:none;}
.info-card .row .k{color:var(--muted);min-width:90px;font-weight:600;}
.map-box{border-radius:var(--radius);min-height:320px;background:linear-gradient(135deg,var(--primary-soft),var(--accent-soft));display:grid;place-items:center;color:var(--primary-dark);font-size:15px;text-align:center;padding:20px;border:1px solid var(--line);}

.pagination{display:flex;gap:8px;justify-content:center;margin-top:36px;}
.pagination a{padding:9px 15px;border-radius:10px;border:1px solid var(--line);font-weight:600;color:var(--ink);}
.pagination a.active,.pagination a:hover{background:var(--primary);color:#fff;border-color:var(--primary);}

.back-link{display:inline-flex;align-items:center;gap:6px;color:var(--primary-dark);font-weight:600;margin-top:30px;}
.back-link:hover{gap:10px;}

/* Responsive */
@media (max-width:980px){
  .hero-grid,.about-grid,.two-col,.layout,.contact-grid{grid-template-columns:1fr;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .foot-grid{grid-template-columns:1fr 1fr;}
  .insurance{padding:40px 24px;}
  .sidebar{position:static;}
}
@media (max-width:720px){
  .menu,.nav-cta .lang-switch{display:none;}
  .hamburger{display:flex;}
  .menu.open{display:flex;flex-direction:column;align-items:stretch;gap:4px;position:absolute;top:72px;left:0;right:0;background:#fff;padding:16px 24px;border-bottom:1px solid var(--line);box-shadow:var(--shadow);}
  .menu.open a{padding:12px 14px;}
  .section{padding:60px 0;}
  .counters{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr;}
}