:root{--bg:#f5f4ed;--ink:#213b31;--green:#284e40;--muted:#69796e;--line:#dce2d6;--accent:#d8eea3}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:"Microsoft YaHei",system-ui,sans-serif;font-size:14px;line-height:1.8}header{max-width:1280px;margin:auto;padding:24px 36px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line)}a{color:inherit;text-underline-offset:4px}button,select,input{font:inherit}button{cursor:pointer;border:0;background:var(--green);color:white;padding:11px 20px;border-radius:8px}button:hover{filter:brightness(1.1)}button:focus-visible,a:focus-visible{outline:3px solid #bd941e;outline-offset:3px}.brand{font-weight:700;text-decoration:none;font-size:21px;letter-spacing:2px}.brand span{font-size:10px;margin-left:24px;font-weight:400;letter-spacing:1.5px}.pill{font-size:11px;border:1px solid var(--line);padding:5px 12px;border-radius:50px}main{max-width:1280px;margin:auto;padding:0 36px}.hero{display:grid;grid-template-columns:1.15fr 1fr;gap:70px;padding:62px 0 40px;align-items:center}.eyebrow{font-size:10px;letter-spacing:2px;color:var(--muted);font-weight:700}h1{font-size:52px;line-height:1.28;letter-spacing:-2px;margin:18px 0 20px;font-weight:650}.hero p{max-width:500px;color:var(--muted);font-size:15px}.hero-meta{font-size:12px;margin-top:30px}.hero-meta span{padding:0 18px;color:#8b9d70}.map{height:330px;background:var(--green);border-radius:14px;position:relative;color:#e3eccf;overflow:hidden;box-shadow:0 20px 45px #213b3115}.map-top{position:absolute;top:20px;left:24px;right:24px;font-size:11px}.map-top span{float:right;color:#a6bd8e}.map svg{position:absolute;inset:30px 0 0;width:100%;height:90%;opacity:.45}.map-node{position:absolute;z-index:1;font-size:18px;background:#284e40;padding:2px 12px;border-left:3px solid #c5db98}.map-node small{display:block;font-size:9px;color:#b4c5a9;letter-spacing:1px}.sin{left:10%;top:69%}.hai{left:69%;top:65%}.kun{left:67%;top:22%}.puer{left:42%;top:40%}.ban{left:42%;top:66%}.map-foot{position:absolute;bottom:12px;right:20px;font-size:9px;color:#a9bda1}.notice{padding:16px 22px;border:1px solid #d9dfca;background:#e9eddd;border-radius:9px;font-size:13px}.notice b{display:inline-block;margin-right:18px}nav{display:flex;gap:26px;border-bottom:1px solid var(--line);margin:30px 0}nav button{border-radius:0;background:none;color:var(--muted);padding:14px 1px;border-bottom:3px solid transparent}nav button.active{color:var(--ink);border-color:var(--green);font-weight:bold}.panel{display:none}.panel.active{display:block}.section-head{display:flex;justify-content:space-between;align-items:center;margin:35px 0 24px;gap:20px}h2{font-size:27px;line-height:1.4;margin:7px 0}h3{font-size:18px;line-height:1.6;margin:0 0 14px}h3 small{font-size:11px;font-weight:400;color:var(--muted)}.section-head p,.muted{color:var(--muted);font-size:12px}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card,.box{background:#fffef9;border:1px solid var(--line);border-radius:12px;padding:24px}.card.featured{background:#e8efdc;border-color:#bdcea5}.card-tag{font-size:10px;text-transform:uppercase;letter-spacing:1px;color:#5d764a;margin-bottom:10px}.card .metric{margin:20px 0 2px}.metric{font-size:35px;font-weight:650;letter-spacing:-1px;line-height:1.5}.metric small{font-size:11px;color:var(--muted);font-weight:400;letter-spacing:0}.card p{font-size:12px}.card button{width:100%;margin-top:10px}.pair{font-size:15px;font-weight:600}.warning{background:#f7eddb;color:#8b5e2d;border-radius:7px;padding:12px;font-size:12px;margin:14px 0}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin:24px 0}.route{font-weight:600;font-size:13px}.box p,.box li{font-size:13px}ul,ol{padding-left:20px}li{margin:9px 0}.secondary{background:transparent;border:1px solid #bdc9b7;color:var(--green);font-size:12px}.builder-grid{display:grid;grid-template-columns:1fr 340px;gap:24px}.flight-select{margin-bottom:14px}.flight-select label{font-weight:600;display:block;margin-bottom:10px}.flight-select select{width:100%}.flight-detail{font-size:12px;margin-top:12px;color:var(--muted)}select,input{padding:9px;border:1px solid #cdd5c7;border-radius:6px;background:#fff;color:var(--ink);max-width:100%}label{font-size:12px;display:block}label select{display:block;margin-top:5px}.total{position:sticky;top:20px}.total .metric{font-size:42px}.total hr{border:0;border-top:1px solid var(--line);margin:20px 0}.input-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.input-grid input{width:100%;display:block;margin-top:5px}.input-grid small{color:var(--muted)}.filters{display:flex;gap:20px;align-items:end;flex-wrap:wrap;margin-bottom:20px}.check{padding-bottom:9px}.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:8px}table{width:100%;border-collapse:collapse;font-size:12px;min-width:900px}th{text-align:left;padding:13px;background:#e8ecdf;font-weight:500}td{padding:16px 13px;border-top:1px solid var(--line);vertical-align:top;background:#fffef9}td small{display:block;color:var(--muted);max-width:250px}.price{font-size:17px;font-weight:600;white-space:nowrap}.tag{display:inline-block;font-size:10px;border-radius:4px;background:#f4e9d8;color:#926029;padding:1px 6px;margin-top:5px}details{margin-top:24px}summary{cursor:pointer;font-weight:bold}.calendar-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.calendar-item{font-size:11px;border-top:1px solid var(--line);padding:10px}.sources{display:flex;gap:8px;flex-wrap:wrap;margin-top:20px}.sources a{font-size:11px;padding:5px 8px;background:#e6ebde;border-radius:4px}footer{font-size:11px;color:var(--muted);padding:40px 0;border-top:1px solid var(--line);margin-top:42px}#costStatus{font-size:12px;color:#8b5e2d;margin-top:15px}#connectionNotes p{font-size:12px}.empty{padding:30px;color:var(--muted)}@media(max-width:900px){.hero{gap:25px}h1{font-size:40px}.cards{grid-template-columns:1fr}.builder-grid{grid-template-columns:1fr}.total{position:static}.calendar-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:600px){header{padding:18px}.brand span{display:none}.pill{font-size:9px}main{padding:0 18px}.hero{grid-template-columns:1fr;padding-top:35px;gap:25px}.hero h1{font-size:40px}.map{height:280px}.hero-meta{font-size:10px}.hero-meta span{padding:0 5px}.two-col{grid-template-columns:1fr}nav{gap:16px;overflow:auto;white-space:nowrap}nav button{font-size:12px}.section-head{display:block}.section-head h2{font-size:23px}.input-grid{grid-template-columns:1fr 1fr}.card,.box{padding:20px}.filters{gap:12px}.calendar-grid{grid-template-columns:1fr 1fr}}
@media(max-width:900px){.hero{grid-template-columns:1fr}.map{max-width:560px;width:100%}.hero-meta{font-size:12px}.hero-meta span{padding:0 8px}}

@media(min-width:901px){.cards{grid-template-columns:repeat(2,1fr)}}