:root{--ink:#16211f;--paper:#f6f3ed;--card:#fffdf9;--brand:#1f6a62;--brand-d:#123f3a;--gold:#b08d57;--line:#e6e1d6;--muted:#6d7772;--serif:"Noto Serif SC","Songti SC",STSong,serif}
*{box-sizing:border-box}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;line-height:1.75;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
.site-header{position:sticky;top:0;z-index:40;background:rgba(246,243,237,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:68px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px}
.logo .mk{width:38px;height:38px;border-radius:12px;background:linear-gradient(145deg,#2b867b,#144b45);color:#fff;display:grid;place-items:center;font-family:var(--serif);font-size:17px}
.nav{display:flex;gap:24px;font-size:14px;color:#3d4a46;flex-wrap:wrap}
.nav a{padding:6px 0;border-bottom:2px solid transparent}
.nav a.on{color:var(--brand);font-weight:600;border-color:var(--brand)}
.nav-cta{background:var(--brand);color:#fff;padding:9px 16px;border-radius:10px;font-size:14px;font-weight:600}
main{min-height:60vh}
.hero{padding:64px 0 56px;background:linear-gradient(180deg,#fbf8f2,#f6f3ed)}
.hero h1{font-family:var(--serif);font-size:clamp(30px,4.6vw,46px);line-height:1.28;margin:0 0 14px;font-weight:600}
.hero p{color:var(--muted);margin:0 0 24px;font-size:15px}
.searchbar{display:flex;gap:10px;max-width:640px}
.searchbar input{flex:1;height:50px;border:1px solid #d9d3c6;background:#fff;border-radius:12px;padding:0 16px;font-size:15px;outline:none}
.searchbar input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(31,106,98,.12)}
.searchbar button{height:50px;padding:0 22px;border:0;border-radius:12px;background:var(--brand);color:#fff;font-size:15px;font-weight:600;cursor:pointer}
section.pad{padding:52px 0}
section.mist{background:#f0ece3}
.shead{margin-bottom:26px}
.shead .en{font-size:11px;letter-spacing:.28em;text-transform:uppercase;color:var(--gold);margin-bottom:8px}
.shead h2{font-family:var(--serif);font-size:clamp(22px,3vw,30px);margin:0 0 8px;font-weight:600}
.shead p{color:var(--muted);font-size:14px;margin:0}
.grid{display:grid;gap:18px}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:0;border-radius:11px;padding:11px 18px;font-size:14px;font-weight:600;background:var(--brand);color:#fff;cursor:pointer;font-family:inherit;transition:.2s}
.btn:hover{background:var(--brand-d)}
.btn.ghost{background:transparent;border:1px solid #cfd8d5;color:var(--brand)}
.btn.block{width:100%}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0}
.chip{border:1px solid #ddd7c9;background:#fff;border-radius:20px;padding:6px 14px;font-size:13px;cursor:pointer;color:#3d4a46}
.chip.on{background:var(--brand);border-color:var(--brand);color:#fff}
.mcard{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px;display:flex;flex-direction:column;gap:6px}
.mcard b{font-size:15px}
.mcard .meta{font-size:12.5px;color:var(--muted)}
.mcard .desc{font-size:13.5px;color:#4a5551;margin:4px 0 0}
.mcard .foot{margin-top:auto;padding-top:10px;display:flex;justify-content:space-between;align-items:center;font-size:12.5px;color:var(--brand)}
.rowline{display:flex;justify-content:space-between;gap:12px;align-items:center;padding:12px 0;border-bottom:1px dashed #e6e1d6}
.rowline:last-child{border-bottom:0}
.up{color:#dc2626}.down{color:#059669}.flat{color:#8a938f}
.rfqcard{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px 20px}
.rfqcard b{font-size:15px}
.rfqcard .meta{font-size:12.5px;color:var(--muted);margin-top:4px}
.badge{font-size:11.5px;padding:3px 10px;border-radius:20px;background:#eef7f6;color:var(--brand)}
.modal{position:fixed;inset:0;background:rgba(18,33,31,.5);display:none;place-items:center;padding:20px;z-index:80}
.modal.open{display:grid}
.modal-box{background:#fffdf9;border-radius:18px;padding:26px;max-width:480px;width:100%;max-height:86vh;overflow:auto}
.modal-box h3{margin:0 0 14px;font-family:var(--serif);font-size:20px}
.field{margin-bottom:12px}
.field label{display:block;font-size:13px;font-weight:600;color:#3d4a46;margin-bottom:6px}
.field input,.field textarea,.field select{width:100%;border:1px solid #d9d3c6;background:#fff;border-radius:10px;padding:10px 12px;font-size:14px;font-family:inherit;outline:none}
.field textarea{min-height:88px;resize:vertical}
.hint{font-size:12px;color:var(--muted)}
.err{color:#dc2626;font-size:12.5px;margin-top:6px}
.join-grid{display:grid;gap:20px;grid-template-columns:1fr 1fr;margin-top:26px}
.join-card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:30px;cursor:pointer;transition:.2s}
.join-card:hover{border-color:#a9cfc9;box-shadow:0 18px 40px -30px rgba(31,106,98,.6)}
.join-card h3{font-family:var(--serif);font-size:22px;margin:10px 0 8px}
.join-card p{color:var(--muted);font-size:14px;margin:0}
.join-card .ic{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;background:#eef7f6;color:var(--brand);font-size:24px}
.site-footer{margin-top:40px;border-top:1px solid var(--line);background:#f1ede4;color:#4a5551}
.site-footer .wrap{padding:32px 24px 24px;display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;font-size:13px}
.site-footer a{display:block;padding:3px 0;color:#4a5551}
.bottom-nav{display:none}
@media(max-width:900px){.g3{grid-template-columns:repeat(2,1fr)}.join-grid{grid-template-columns:1fr}}
@media(max-width:768px){
  .nav{display:none}
  .nav-cta{display:none}
  body{padding-bottom:70px}
  .bottom-nav{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:60;background:#fffdf9;border-top:1px solid var(--line);padding:6px 4px 8px}
  .bottom-nav a{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;font-size:11px;color:#8a938f;padding:4px 0}
  .bottom-nav a.on{color:var(--brand);font-weight:600}
  .bottom-nav svg{width:21px;height:21px}
  .hero{padding:40px 0 36px}
  .grid{gap:12px}
  .card,.mcard,.rfqcard,.join-card{padding:16px;border-radius:14px}
  section.pad{padding:34px 0}
  .wrap{padding:0 16px}
}