:root{--ink:#29312c;--muted:#737d72;--paper:#f7f8f1;--line:#e0e4d9;--accent:#75418a;--tint:#f1eaf4;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);font-synthesis:none}
*{box-sizing:border-box}[hidden]{display:none!important}body{margin:0;background:var(--paper);height:100dvh;display:flex;flex-direction:column;overflow:hidden}button,select{font:inherit;color:inherit;cursor:pointer}button{border:1px solid var(--line);background:#fffef9;border-radius:5px;padding:8px 12px;transition:background .15s,border-color .15s}button:hover{border-color:var(--accent);background:var(--tint)}button:disabled{cursor:wait;opacity:.5}button:focus-visible,select:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
header{height:76px;flex:none;display:flex;align-items:center;gap:30px;padding:0 28px;border-bottom:1px solid var(--line);background:#fffef9}.identities{display:flex;align-items:center;gap:20px;flex:none}.school{display:flex;align-items:center;height:36px;padding-right:20px;border-right:1px solid var(--line);color:#663379}.school b{font-family:"Songti SC","STSong",serif;font-size:24px;font-weight:600;letter-spacing:2px;white-space:nowrap;line-height:34px}.brand{display:flex;align-items:center;height:36px}.brand img{display:block;width:130px;height:38px;object-fit:contain}#plans{display:flex;justify-content:center;align-self:stretch;margin:auto;gap:8px}.plan-tab{display:flex;align-items:center;gap:9px;padding:0 18px;border:0;border-bottom:2px solid transparent;border-radius:0;background:none;white-space:nowrap}.plan-tab .number{font-size:11px;color:#929b8d;font-variant-numeric:tabular-nums}.plan-tab strong{font-size:17px;font-weight:550}.plan-tab[aria-pressed=true]{border-bottom-color:var(--accent);color:var(--accent);background:linear-gradient(0deg,var(--tint),transparent 80%)}.plan-tab[aria-pressed=true] .number{color:var(--accent)}.header-actions{display:flex;gap:8px;flex:none}.header-actions button{font-size:12px;padding:8px 11px}.header-actions button:first-child{border:0;background:none;color:var(--muted)}
main{display:flex;min-height:0;flex:1}.rail{display:flex;width:270px;flex:none;flex-direction:column;min-height:0;border-right:1px solid var(--line);background:#fffef9}.rail-intro{padding:23px 22px 20px}.rail-intro>small{font-size:11px;letter-spacing:.5px;color:var(--accent)}h1{font-size:22px;line-height:1.4;font-weight:600;margin:9px 0 10px}.rail-intro>p{font-size:14px;line-height:1.85;margin:12px 0 0;color:#5d695a}#metrics{display:flex;gap:18px;margin-top:15px;font-size:11px;color:var(--muted)}#metrics b{font-size:16px;color:var(--accent);font-weight:500}#phase-result{font-size:11px;color:var(--accent);border-top:1px solid var(--line);padding-top:12px}.rail-tabs{display:flex;margin:0 22px;border-bottom:1px solid var(--line);flex:none}.rail-tabs button{width:50%;border:0;border-bottom:2px solid transparent;border-radius:0;font-size:12px;background:none;padding:12px 0}.rail-tabs [aria-selected=true]{color:var(--accent);border-bottom-color:var(--accent);font-weight:600}.rail-scroll{overflow:auto;min-height:0;padding:16px 22px 22px;scrollbar-width:thin;scrollbar-color:#d0d6c9 transparent}#nodes-heading{font-size:11px;font-weight:400;line-height:1.6;color:var(--muted);margin:0 0 12px}.node-button{width:100%;display:block;text-align:left;margin-bottom:8px;padding:12px 10px;line-height:1.6;font-size:13px;border-color:transparent;background:#f6f8f0}.node-button b{font-weight:550}.node-button small{display:block;font-size:11px;color:var(--muted);margin-top:3px}.node-button[aria-pressed=true]{border-color:var(--accent);background:var(--tint)}.dining-grid{display:grid;grid-template-columns:1fr 1fr;gap:6px}.dining-grid button{font-size:13px;background:#f6f8f0;border-color:transparent;padding:10px 5px}.module{display:flex;justify-content:space-between;align-items:center;width:100%;text-align:left;border:0;border-bottom:1px solid var(--line);border-radius:0;padding:15px 0;background:none;font-size:13px}.module span{color:#929b8b}.boundary{font-size:11px;line-height:1.85;color:var(--muted);margin:22px 0 0}.rail-foot{display:none}
.map-column{flex:1;min-width:0;display:flex;flex-direction:column}#stage{position:relative;flex:1;min-height:0;overflow:hidden;background:radial-gradient(ellipse at 50% 40%,#fffef9,#f0f3e9)}#viewport,#labels,#leaders{position:absolute;inset:0}#viewport canvas{display:block;width:100%;height:100%}#labels,#leaders{pointer-events:none;width:100%;height:100%}#leaders line{stroke:#7d8a77;stroke-width:.65;opacity:.6}#leaders circle{fill:#7d8a77}#labels button{pointer-events:auto;position:absolute;transform:translate(-50%,-50%);white-space:nowrap;padding:7px 9px;font-size:12px;background:#fffef9f5;line-height:1.25;max-width:225px;overflow:hidden;text-overflow:ellipsis;border-radius:4px;box-shadow:0 2px 6px #303a2010}.map-label.landmark{font-size:11px;padding:5px 7px;background:#fafbf2dd;color:#727f67;border:0;box-shadow:none}.map-label.service{border-color:var(--accent);color:var(--accent);font-weight:550}.map-label.active{background:var(--accent)!important;color:white!important}.stage-top{position:absolute;right:22px;top:20px;display:flex;pointer-events:none}.view-tools{display:flex;gap:4px;pointer-events:auto}.view-tools button{height:34px;min-width:34px;padding:6px 10px;font-size:12px;background:#fffef9df}.view-tools [aria-pressed=true]{background:var(--accent);color:white}#toggle-info{position:absolute;left:22px;top:20px;height:34px;font-size:12px;background:#fffef9df;z-index:2}#toggle-info[aria-expanded=true]{color:var(--accent);border-color:var(--accent)}.north{position:absolute;right:26px;bottom:20px;font-size:10px;line-height:1.5;color:#8b9482;pointer-events:none;text-align:center}body[data-camera-mode=panorama] .north{display:none}
.route-bar{display:flex;align-items:center;justify-content:center;flex:none;min-height:48px;gap:16px;padding:8px 22px;background:#f6f8f0;border-top:1px solid var(--line)}#route-caption{font-size:11px;color:var(--muted);white-space:nowrap}#reset-selection{font-size:11px;border:0;background:transparent;padding:5px 8px}#reset-selection[aria-pressed=true]{color:var(--accent);background:var(--tint)}#legend{display:flex;gap:7px;flex-wrap:wrap;min-width:0}#legend button{display:flex;align-items:center;gap:6px;font-size:11px;padding:5px 9px;border:1px solid transparent;background:transparent;line-height:16px}#legend b{font-size:11px;font-weight:550}#legend span{display:none}#legend i{width:16px;height:3px;background:var(--route-color);display:inline-block}#legend button[aria-pressed=true]{border-color:var(--accent);background:#fffef9;color:var(--accent)}
#loading{position:absolute;left:50%;top:48%;transform:translate(-50%,-50%);padding:20px 26px;background:#fffffaf5;border:1px solid var(--line);border-radius:8px;font-size:14px;max-width:75%;text-align:center;line-height:1.6}#detail{position:absolute;top:68px;right:22px;bottom:20px;width:330px;background:#fffefaf7;backdrop-filter:blur(8px);border:1px solid var(--line);border-radius:7px;z-index:4;box-shadow:0 8px 28px #34402512;overflow:auto;padding:20px}.detail-top{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);padding-bottom:10px}.detail-top small{font-size:11px;color:var(--accent)}.detail-top button{font-size:23px;padding:0 7px;border:0;background:none}#detail-content h3{font-size:21px;line-height:1.45;margin:18px 0 12px;font-weight:600}#detail-content h4{font-size:13px;margin:18px 0 8px}#detail-content p,#detail-content li{font-size:13px;line-height:1.85;color:#5e6958}#detail-content ol{padding-left:20px}#detail-content li{margin-bottom:7px}#detail-content img{width:100%;border-radius:4px}#detail-content .note{font-size:11px;color:#89927f;border-top:1px solid var(--line);padding-top:12px}
footer{display:flex;align-items:center;gap:28px;min-height:92px;flex:none;padding:12px 28px;background:#fffef9;border-top:1px solid var(--line)}.transport{display:flex;gap:6px;flex:none}#play{background:var(--accent);color:white;border-color:var(--accent);min-width:118px;height:40px;font-size:13px;font-weight:500;padding:8px 14px}#restart{font-size:18px;padding:5px 9px;height:40px;min-width:34px}.playback-center{flex:1;min-width:0}#steps{display:grid;grid-template-columns:repeat(5,1fr);gap:6px}.step{display:flex;align-items:center;justify-content:center;gap:8px;border:0;border-bottom:2px solid transparent;border-radius:0;background:none;padding:6px 4px 9px;font-size:12px;white-space:nowrap}.step strong{font-weight:500}.step small{color:#a0a894;font-size:10px}.step[aria-current=step]{border-bottom-color:var(--accent);color:var(--accent)}.step.completed small{color:var(--accent)}.timeline{display:flex;align-items:center;gap:12px;font-size:10px;color:#929b8c;font-variant-numeric:tabular-nums;margin-top:8px}.timeline input{flex:1;min-width:0;accent-color:var(--accent);height:4px;cursor:pointer;margin:0}.speed{font-size:11px;color:var(--muted);display:flex;align-items:center;gap:7px;flex:none}.speed select{background:transparent;border:1px solid var(--line);border-radius:5px;padding:7px 9px;font-size:12px}
#fleet-card{margin:20px 0;border:1px solid var(--line);border-radius:5px;overflow:hidden}#fleet-card img{width:100%;display:block}#fleet-card figcaption{padding:10px;font-size:12px}#fleet-card span{display:block;color:#70796e;font-size:11px;margin-top:4px}dialog{border:1px solid var(--line);border-radius:8px;max-width:740px;width:80vw;max-height:88vh;padding:24px;color:var(--ink)}dialog::backdrop{background:#202a2255;backdrop-filter:blur(3px)}.source-head{display:flex;align-items:center;justify-content:space-between}.source-head h2{font-size:21px;margin:0}#close-source{border:0;background:none;font-size:24px;padding:0 8px}dialog p{font-size:13px;line-height:1.9;color:#65705f}.source-note{font-size:11px;border-top:1px solid var(--line);padding-top:14px}#source-tabs{display:flex;gap:6px;margin:16px 0}#source-tabs button{font-size:12px}#source-tabs [aria-pressed=true]{color:var(--accent);border-color:var(--accent);background:var(--tint)}#source-image{max-height:46vh;width:100%;object-fit:contain}
@media(max-width:1200px){header{gap:14px;padding:0 20px}.identities{gap:14px}.school{padding-right:14px}.school b{font-size:22px}.brand img{width:113px;height:34px}.plan-tab{gap:6px;padding:0 12px}.plan-tab strong{font-size:15px}.header-actions{gap:2px}.header-actions button{font-size:11px;padding:7px 8px}.rail{width:250px}footer{gap:18px;padding-left:20px;padding-right:20px}.step{font-size:11px;gap:5px}.speed>span{display:none}}
@media(max-width:950px){header{height:110px;flex-wrap:wrap;justify-content:space-between;gap:0;padding-top:8px}.identities{height:46px}#plans{order:3;width:100%;height:48px;justify-content:space-around}.plan-tab{flex:1;justify-content:center}.header-actions{height:40px;align-items:center}.rail{width:230px}.rail-intro{padding:18px}.rail-scroll{padding:16px 18px}.rail-tabs{margin:0 18px}footer{gap:12px}#play{min-width:94px;font-size:12px;padding:8px}#restart{display:none}#detail{width:285px}.step small{display:none}.route-bar{gap:8px}#legend{gap:2px}}
@media(max-height:740px){header{height:64px}footer{min-height:82px;padding-top:8px;padding-bottom:8px}.rail-intro{padding-top:18px;padding-bottom:15px}#detail{top:60px;bottom:12px}.route-bar{min-height:42px;padding-top:5px;padding-bottom:5px}}

#flow-caption{position:absolute;left:22px;top:64px;font-size:12px;line-height:1.5;color:var(--accent);padding:5px 8px;background:#fffef9e8;border-left:2px solid var(--accent);pointer-events:none;max-width:50%;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}body[data-camera-mode=medium] .north{display:none}

.map-label.operation{font-size:11px;padding:5px 7px;color:#237a61;border-color:#a3cdb8;background:#fffef9f0;box-shadow:none}