:root{
  --c-primary:#003366; --c-secondary:#0099CC; --c-accent:#00CC66;
  --c-light:#FFFFFF; --c-gray:#CCFFFF; --c-dark:#000033;
  --c-deep:#000033; --c-on-deep:#ffffff; --c-surface:#ffffff;
  --c-text:#22262b; --c-muted:#6b7280; --c-line:#e6e8ec; --c-bg:#f5f6f8;
  --radius:10px; --shadow:0 4px 18px rgba(0,0,0,.08); --maxw:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:"Microsoft YaHei","PingFang SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;line-height:1.75;color:var(--c-text);background:var(--c-light)}
img{max-width:100%;height:auto;display:block;border:0}
a{color:var(--c-primary);text-decoration:none;transition:color .2s}
a:hover{color:var(--c-secondary)}
h1,h2,h3,h4{margin:0 0 .6em;line-height:1.35;font-weight:700}
h1{font-size:1.9rem}h2{font-size:1.55rem}h3{font-size:1.2rem}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.3em}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 16px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--c-accent);color:var(--c-dark);padding:8px 14px;z-index:999}
.skip-link:focus{left:8px;top:8px}
/* ---------- top bar ---------- */
.topbar{background:var(--c-deep);color:var(--c-on-deep);font-size:.82rem}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;gap:12px;min-height:36px;flex-wrap:wrap}
.topbar a{color:var(--c-on-deep);opacity:.92}.topbar a:hover{color:var(--c-accent);opacity:1}
.topbar span{opacity:.9}
/* ---------- header ---------- */
.site-header{background:var(--c-light);box-shadow:0 2px 10px rgba(0,0,0,.07);position:sticky;top:0;z-index:100}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:76px}
.logo{display:flex;align-items:center;gap:12px;min-width:0}
.logo-mark{width:46px;height:46px;border-radius:9px;flex:0 0 46px;
  background:linear-gradient(135deg,var(--c-primary),var(--c-secondary));
  color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.15rem;letter-spacing:1px}
.logo-txt strong{display:block;font-size:1.12rem;color:var(--c-primary);line-height:1.3}
.logo-txt em{display:block;font-style:normal;font-size:.72rem;color:var(--c-muted);letter-spacing:.6px;text-transform:uppercase}
.nav-toggle{display:none;background:none;border:1px solid var(--c-line);border-radius:8px;padding:8px 12px;font-size:1.2rem;cursor:pointer;color:var(--c-primary)}
.main-nav ul{display:flex;list-style:none;margin:0;padding:0;gap:4px}
.main-nav a{display:block;padding:10px 16px;border-radius:8px;color:var(--c-text);font-weight:600;font-size:.95rem}
.main-nav a:hover{background:var(--c-bg);color:var(--c-primary)}
.main-nav a[aria-current="page"]{background:var(--c-primary);color:#fff}
/* ---------- hero ---------- */
.hero{position:relative;color:#fff;background:var(--c-primary);overflow:hidden}
.hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.42}
.hero .wrap{position:relative;z-index:2;padding:72px 16px 64px;max-width:900px;text-align:center}
.hero h1{color:#fff;font-size:2.2rem;text-shadow:0 2px 14px rgba(0,0,0,.55)}
.hero p{font-size:1.05rem;text-shadow:0 2px 10px rgba(0,0,0,.55);margin-bottom:1.4em}
.hero .btn-row{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
/* ---------- buttons ---------- */
.btn{display:inline-block;padding:12px 28px;border-radius:var(--radius);font-weight:700;
  background:var(--c-accent);color:var(--c-dark);border:0;cursor:pointer;font-size:1rem}
.btn:hover{filter:brightness(1.08);color:var(--c-dark)}
.btn-ghost{background:transparent;color:#fff;border:2px solid #fff}
.btn-ghost:hover{background:#fff;color:var(--c-primary)}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-secondary);color:#fff}
/* ---------- sections ---------- */
.section{padding:56px 0}
.section.alt{background:var(--c-bg)}
.sec-head{text-align:center;margin-bottom:34px}
.sec-head h2{position:relative;display:inline-block;padding-bottom:12px;color:var(--c-primary)}
.sec-head h2::after{content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:0;width:56px;height:3px;background:var(--c-accent);border-radius:2px}
.sec-head p{color:var(--c-muted);margin:8px 0 0}
/* ---------- grids ---------- */
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--c-surface);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);
  display:flex;flex-direction:column;transition:transform .22s,box-shadow .22s}
.card:hover{transform:translateY(-5px);box-shadow:0 12px 26px rgba(0,0,0,.14)}
.card-img{aspect-ratio:4/3;overflow:hidden;background:var(--c-gray)}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .45s}
.card:hover .card-img img{transform:scale(1.06)}
.card-body{padding:16px 18px 20px;flex:1;display:flex;flex-direction:column}
.card-body h3{font-size:1.03rem;margin-bottom:.4em}
.card-body h3 a{color:var(--c-text)}
.card-body h3 a:hover{color:var(--c-primary)}
.card-body p{color:var(--c-muted);font-size:.88rem;margin-bottom:.9em;flex:1}
.card-meta{font-size:.78rem;color:var(--c-muted);margin-bottom:.5em;display:flex;gap:12px;flex-wrap:wrap}
.more{font-size:.85rem;font-weight:700;color:var(--c-primary)}
/* ---------- page banner ---------- */
.page-banner{background:linear-gradient(120deg,var(--c-primary),var(--c-secondary));color:#fff;padding:44px 0;text-align:center}
.page-banner h1{color:#fff;margin:0;font-size:1.75rem}
.page-banner p{color:rgba(255,255,255,.9);margin:.4em 0 0;font-size:.92rem}
.crumb{background:var(--c-bg);border-bottom:1px solid var(--c-line);font-size:.85rem}
.crumb .wrap{padding:10px 16px;color:var(--c-muted)}
.crumb a{color:var(--c-muted)}.crumb a:hover{color:var(--c-primary)}
/* ---------- detail layout ---------- */
.layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:32px;align-items:start}
.detail-hero{display:grid;grid-template-columns:minmax(0,440px) minmax(0,1fr);gap:26px;align-items:start;
  background:var(--c-surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;margin-bottom:26px}
.detail-hero img{width:100%;border-radius:8px;aspect-ratio:4/3;object-fit:cover}
.detail-hero h1{font-size:1.5rem;color:var(--c-primary);margin-bottom:.4em}
.facts{list-style:none;padding:0;margin:0 0 14px}
.facts li{display:flex;gap:10px;padding:6px 0;border-bottom:1px dashed var(--c-line);font-size:.9rem}
.facts li b{flex:0 0 86px;color:var(--c-muted);font-weight:600}
.prose{background:var(--c-surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}
.prose h2{font-size:1.2rem;color:var(--c-primary);border-left:4px solid var(--c-accent);padding-left:10px;margin-top:1.6em}
.prose h2:first-child{margin-top:0}
.prose img{border-radius:8px;margin:14px 0}
.prose table{width:100%;border-collapse:collapse;margin:14px 0;font-size:.9rem}
.prose th,.prose td{border:1px solid var(--c-line);padding:9px 12px;text-align:left}
.prose th{background:var(--c-bg);color:var(--c-primary);width:34%}
.prose ul li{margin-bottom:.4em}
.side{background:var(--c-surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px;margin-bottom:22px}
.side h2,.side h3{font-size:1.02rem;color:var(--c-primary);border-bottom:2px solid var(--c-line);padding-bottom:10px;margin-bottom:14px}
.side-list{list-style:none;padding:0;margin:0}
.side-list li{border-bottom:1px dashed var(--c-line)}
.side-list li:last-child{border-bottom:0}
.side-list a{display:block;padding:9px 0;font-size:.9rem;color:var(--c-text)}
.side-list a:hover{color:var(--c-primary);padding-left:6px}
.side-cta{background:linear-gradient(135deg,var(--c-primary),var(--c-secondary));color:#fff;text-align:center}
.side-cta h2,.side-cta h3{color:#fff;border-bottom-color:rgba(255,255,255,.3)}
.side-cta p{font-size:.9rem;color:rgba(255,255,255,.92)}
.side-cta .tel{font-size:1.25rem;font-weight:700;color:var(--c-accent);word-break:break-all;display:block;margin:6px 0 12px}
.pager{display:flex;justify-content:space-between;gap:12px;margin-top:22px;flex-wrap:wrap}
.pager a{font-size:.88rem;background:var(--c-surface);border:1px solid var(--c-line);border-radius:8px;padding:9px 16px;color:var(--c-text)}
.pager a:hover{border-color:var(--c-primary);color:var(--c-primary)}
/* ---------- features / stats ---------- */
.feat{background:var(--c-surface);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);text-align:center}
.feat .n{font-size:1.9rem;font-weight:700;color:var(--c-primary);line-height:1.1}
.feat .n small{font-size:.9rem;color:var(--c-accent)}
.feat h3{font-size:1rem;margin:.5em 0 .3em}
.feat p{font-size:.85rem;color:var(--c-muted);margin:0}
.timeline{list-style:none;padding:0;margin:0;position:relative}
.timeline::before{content:"";position:absolute;left:74px;top:6px;bottom:6px;width:2px;background:var(--c-line)}
.timeline li{position:relative;padding:0 0 22px 104px}
.timeline li::before{content:"";position:absolute;left:68px;top:7px;width:14px;height:14px;border-radius:50%;background:var(--c-accent);border:3px solid #fff;box-shadow:0 0 0 2px var(--c-primary)}
.timeline .yr{position:absolute;left:0;top:0;width:60px;text-align:right;font-weight:700;color:var(--c-primary);font-size:.95rem}
.timeline h3{font-size:1rem;margin-bottom:.2em}
.timeline p{font-size:.87rem;color:var(--c-muted);margin:0}
.tag{display:inline-block;background:var(--c-bg);color:var(--c-primary);border:1px solid var(--c-line);
  border-radius:999px;padding:3px 12px;font-size:.78rem;margin:0 6px 6px 0}
/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:28px;align-items:start}
.info-card{background:var(--c-surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}
.info-card ul{list-style:none;padding:0;margin:0}
.info-card li{display:flex;gap:12px;padding:11px 0;border-bottom:1px dashed var(--c-line);font-size:.94rem}
.info-card li:last-child{border-bottom:0}
.info-card li b{flex:0 0 84px;color:var(--c-muted);font-weight:600}
.form-row{margin-bottom:14px}
.form-row label{display:block;font-size:.88rem;font-weight:600;margin-bottom:5px}
.form-row input,.form-row textarea,.form-row select{width:100%;padding:10px 12px;border:1px solid var(--c-line);
  border-radius:8px;font:inherit;font-size:.92rem;background:var(--c-surface);color:var(--c-text)}
.form-row textarea{min-height:110px;resize:vertical}
.form-row input:focus,.form-row textarea:focus{outline:2px solid var(--c-secondary);outline-offset:0;border-color:var(--c-secondary)}
.form-note{font-size:.82rem;color:var(--c-muted)}
.form-msg{display:none;margin-top:12px;padding:11px 14px;border-radius:8px;background:var(--c-bg);
  border-left:4px solid var(--c-accent);font-size:.9rem}
.form-msg.show{display:block}
/* ---------- footer ---------- */
.site-footer{background:var(--c-deep);color:var(--c-on-deep);padding:44px 0 0;margin-top:52px;font-size:.88rem}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:26px;padding-bottom:30px}
.site-footer h3{color:#fff;font-size:1rem;margin-bottom:14px}
.site-footer a{color:var(--c-on-deep)}
.site-footer a:hover{color:var(--c-accent)}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{padding:4px 0}
.foot-bottom{border-top:1px solid rgba(128,128,128,.35);padding:16px 0;text-align:center;font-size:.82rem;color:var(--c-on-deep);opacity:.85}
.foot-bottom p{margin:4px 0}
.foot-bottom a{color:var(--c-on-deep)}
/* ---------- to top ---------- */
.to-top{position:fixed;right:18px;bottom:22px;width:44px;height:44px;border-radius:50%;border:0;cursor:pointer;
  background:var(--c-primary);color:#fff;font-size:1.2rem;box-shadow:var(--shadow);display:none;z-index:200}
.to-top.show{display:block}
.to-top:hover{background:var(--c-secondary)}
/* ---------- responsive ---------- */
@media (max-width:992px){
  .g4{grid-template-columns:repeat(3,1fr)}
  .layout{grid-template-columns:1fr}
  .detail-hero{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr}
}
@media (max-width:768px){
  body{font-size:15px}
  .nav-toggle{display:block}
  .main-nav{position:absolute;left:0;right:0;top:100%;background:var(--c-light);border-top:1px solid var(--c-line);
    box-shadow:0 12px 22px rgba(0,0,0,.12);display:none}
  .main-nav.open{display:block}
  .main-nav ul{flex-direction:column;gap:0;padding:8px}
  .main-nav a{border-radius:6px}
  .site-header .wrap{min-height:64px;position:relative;flex-wrap:wrap}
  .g2,.g3,.g4{grid-template-columns:repeat(2,1fr)}
  .hero .wrap{padding:52px 16px 46px}
  .hero h1{font-size:1.6rem}
  .section{padding:38px 0}
  .logo-txt strong{font-size:1rem}
  .timeline::before{left:52px}
  .timeline li{padding-left:74px}
  .timeline li::before{left:46px}
  .timeline .yr{width:40px}
  .foot-grid{grid-template-columns:1fr;gap:18px}
}
@media (max-width:480px){
  .g2,.g3,.g4{grid-template-columns:1fr}
  .hero h1{font-size:1.35rem}
  .page-banner h1{font-size:1.3rem}
  .prose,.info-card,.side{padding:16px}
}
@media print{.site-header,.main-nav,.to-top,.topbar{display:none}}