:root{--brand:#1d417c;--brand2:#1b3958;--ink:#22303f;--mut:#5d6e7e;--bg:#f5f7fa;--line:#dfe6ee;--acc:#27ae60}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Segoe UI','Microsoft YaHei',Roboto,sans-serif;color:var(--ink);background:#fff;line-height:1.65}
.topbar{position:sticky;top:0;z-index:50;background:#fffdf9ee;backdrop-filter:blur(10px);border-bottom:1px solid var(--line);display:flex;align-items:center;gap:18px;padding:10px 4vw;flex-wrap:wrap}
.brand{margin-right:auto}
.brand img{height:38px;display:block}
.nav{display:flex;gap:2px;flex-wrap:wrap;flex:1}
.nav a{color:var(--ink);text-decoration:none;font-size:.86rem;padding:6px 10px;border-radius:8px}
.nav a:hover{color:var(--brand);background:#eef3f9}
/* 窄屏汉堡（tom 铁律：右上）：≤900px 导航收抽屉，☰ 与 🌍 并列右侧 */
.navbtn{display:none;background:none;border:none;font-size:1.3rem;color:var(--brand);cursor:pointer;padding:4px 8px;border-radius:8px}
.navbtn:hover{background:#eef3f9}
.bar-acts{display:flex;align-items:center;gap:8px;margin-left:auto}
.langsw{position:relative}
.globe{background:var(--brand);color:#fff;border:none;border-radius:20px;padding:7px 14px;font-size:.85rem;cursor:pointer}
.langmenu{display:none;position:absolute;right:0;top:110%;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 8px 24px rgba(0,0,0,.12);min-width:150px;overflow:hidden;z-index:60}
.langmenu.open{display:block}
.langmenu a{display:block;padding:9px 16px;color:var(--ink);text-decoration:none;font-size:.86rem}
.langmenu a:hover{background:#eef3f9;color:var(--brand)}
.hero{position:relative;overflow:hidden;color:#fff;padding:64px 6vw 72px;background:var(--brand2)}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;animation:hfade 36s ease-in-out infinite;will-change:opacity,transform}
@keyframes hfade{0%{opacity:0;transform:scale(1.06) translateX(0)}6%{opacity:1}30%{opacity:1}38%{opacity:0;transform:scale(1.15) translateX(-1.5%)}100%{opacity:0;transform:scale(1.06)}}
.hero-veil{position:absolute;inset:0;z-index:1;background:linear-gradient(118deg,rgba(27,57,88,.78) 0%,rgba(29,65,124,.55) 55%,rgba(42,83,130,.3) 100%)}
.hero-in{position:relative;z-index:2}
.hero h1{font-size:clamp(1.6rem,4vw,2.6rem);max-width:900px;margin:0 auto;text-shadow:0 2px 16px rgba(15,35,60,.6)}
.hero p{max-width:900px;margin:12px auto 0;opacity:.95;font-size:.98rem;text-shadow:0 1px 10px rgba(15,35,60,.6)}
@media(prefers-reduced-motion:reduce){.hero-bg img{animation:none}.hero-bg img:first-child{opacity:1}}
.wrap{max-width:1080px;margin:0 auto;padding:34px 4vw}
.sec-t{font-size:1.25rem;color:var(--brand);margin:26px 0 14px;border-left:4px solid var(--acc);padding-left:12px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px}
.pcard{display:block;background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;text-decoration:none;color:var(--ink);transition:.15s}
.pcard:hover{transform:translateY(-2px);border-color:var(--brand);box-shadow:0 6px 18px rgba(29,65,124,.12)}
.pcard img{width:100%;height:170px;object-fit:contain;background:#fff;padding:10px}
.pt{font-weight:600;padding:10px 12px 2px;font-size:.92rem}
.ps{color:var(--mut);font-size:.78rem;padding:0 12px 12px}
.big3{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;margin:18px 0}
.big3 .b{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;text-decoration:none;color:var(--ink);display:block}
.big3 .b:hover{border-color:var(--brand)}
.big3 b{color:var(--brand);font-size:1.05rem;display:block;margin-bottom:6px}
.big3 span{color:var(--mut);font-size:.85rem}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0 4px}
.chip{background:#eef3f9;color:var(--brand);border-radius:18px;padding:4px 13px;font-size:.82rem;text-decoration:none}
.chip:hover{background:var(--brand);color:#fff}
.detail{max-width:920px;margin:0 auto}
.detail h1{font-size:1.45rem;color:var(--brand);margin:6px 0 2px}
.model{color:var(--mut);font-size:1rem;margin-bottom:14px}
.gal{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px;margin:14px 0}
.gal img{width:100%;border:1px solid var(--line);border-radius:10px;background:#fff}
.sect{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 20px;margin:16px 0}
.sect h3{color:var(--brand);font-size:1rem;margin-bottom:10px}
.sect :is(p,table,ul,ol,div){max-width:100%}
.sect table{border-collapse:collapse;width:100%;font-size:.84rem}
.sect td,.sect th{border:1px solid var(--line);padding:5px 8px}
.sect img{max-width:100%;height:auto}
.acts{display:flex;gap:10px;margin:18px 0;flex-wrap:wrap}
.btn{display:inline-block;border-radius:10px;padding:10px 22px;font-size:.9rem;text-decoration:none}
.b-pri{background:var(--acc);color:#fff}
.b-sec{background:#fff;color:var(--brand);border:1.5px solid var(--brand)}
.crumb{color:var(--mut);font-size:.8rem;margin-bottom:10px}
.crumb a{color:var(--mut)}
.list-head{display:flex;justify-content:space-between;align-items:baseline;flex-wrap:wrap;gap:8px}
.count{color:var(--mut);font-size:.8rem}
.foot{background:var(--brand2);color:#fff;margin-top:50px;padding:34px 4vw 22px}
.foot-in{max-width:1080px;margin:0 auto;display:flex;gap:20px;align-items:center;flex-wrap:wrap}
.foot-in img{height:34px}
.foot-in div{font-size:.8rem;opacity:.85}
.copy{text-align:center;font-size:.74rem;opacity:.6;margin-top:18px}
.std-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px;margin:14px 0}
.std-grid a{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px;text-align:center;color:var(--brand);font-weight:600;text-decoration:none;font-size:.95rem}
.std-grid a:hover{border-color:var(--brand);background:#f2f6fb}
.note{background:#f0f6ff;border-left:4px solid var(--brand);border-radius:10px;padding:12px 16px;color:var(--mut);font-size:.86rem;margin:12px 0}
.news-li{display:block;padding:12px 4px;border-bottom:1px solid var(--line);text-decoration:none;color:var(--ink)}
.news-li:hover{color:var(--brand)}
.news-li small{color:var(--mut);display:block}
@media(max-width:900px){
  .topbar{padding:8px 4vw;gap:8px}
  .brand img{height:30px}
  .nav{display:none;order:4;width:100%;flex-direction:column;gap:0;background:#fff;border-top:1px solid var(--line);border-radius:0 0 14px 14px;box-shadow:0 12px 24px rgba(0,0,0,.08);padding:6px 0}
  .nav.open{display:flex}
  .navbtn{display:block}
  .nav a{padding:12px 18px;font-size:.95rem;border-radius:0;border-bottom:1px solid #f0f4f8}
  .nav a:last-child{border-bottom:none}
  .wrap{padding:22px 5vw}
  .sect{overflow-x:auto;-webkit-overflow-scrolling:touch}
  .gal{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}
  .hero{padding:44px 6vw 52px}
}
@media(max-width:520px){
  .big3{grid-template-columns:1fr}
  .grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}
  .detail h1{font-size:1.2rem}
  .globe span{display:none}
  .globe{padding:7px 10px}
}
@media print{.topbar,.foot,.acts{display:none}}