:root{color-scheme:light;font-family:PingFang SC,Hiragino Sans GB,Microsoft YaHei,system-ui,sans-serif;--bg: #f4f6f8;--panel: #ffffff;--text: #1a1c1c;--muted: #6b7280;--primary: #0d9488;--border: #e5e7eb}*{box-sizing:border-box}html,body{margin:0;height:100%;background:var(--bg);color:var(--text)}#app{display:flex;flex-direction:column;min-height:100dvh}.topbar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.75rem;padding:.75rem 1rem;background:var(--panel);border-bottom:1px solid var(--border);box-shadow:0 1px 2px #0000000a}.topbar-inner h1{margin:0;font-size:1.125rem;font-weight:700}.subtitle{margin:.15rem 0 0;font-size:.8125rem;color:var(--muted)}.topbar-actions{display:flex;align-items:center;gap:.5rem}.subject-picker select{min-height:2.5rem;padding:0 .75rem;border-radius:999px;border:1px solid var(--border);background:#fff;font-size:.875rem;font-weight:600}.btn{min-height:2.5rem;padding:0 1rem;border-radius:999px;border:1px solid var(--border);background:#fff;font-size:.875rem;font-weight:600;cursor:pointer}.btn:active{transform:scale(.98)}.map-wrap{position:relative;flex:1;min-height:0}#markmap{display:block;width:100%;height:calc(100dvh - 7.5rem);background:#f8fafc}#markmap.markmap,#markmap .markmap{--markmap-text-color: #0f172a;--markmap-font: 600 15px/1.45 "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;color:#0f172a}#markmap foreignObject.markmap-foreign{opacity:1!important}#markmap .markmap-foreign,#markmap .markmap-foreign div,#markmap .markmap-foreign span,#markmap .markmap-foreign p{color:#0f172a!important;font:var(--markmap-font)!important;font-weight:600!important;-webkit-font-smoothing:antialiased}#markmap .markmap-link{stroke-opacity:1!important;opacity:1!important}#markmap .markmap-node>circle{stroke:#fff!important;stroke-width:2px!important;filter:drop-shadow(0 1px 1px rgb(0 0 0 / 12%))}.status{position:absolute;top:0;right:0;bottom:0;left:0;z-index:10;display:flex;align-items:center;justify-content:center;margin:0;padding:1rem;text-align:center;color:#b91c1c;background:#ffffffeb;pointer-events:auto}.status[hidden]{display:none!important;pointer-events:none!important}.footer{display:flex;align-items:center;justify-content:space-between;gap:.5rem;padding:.5rem 1rem .75rem;font-size:.75rem;color:var(--muted);background:var(--panel);border-top:1px solid var(--border)}.footer a{color:var(--primary);text-decoration:none;font-weight:600}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}