:root{--ivory:#f6f3ec;--paper:#fffdf8;--ink:#1e2a2f;--ink-soft:#4a575c;--line:#ddd6c8;--teal:#1f5f63;--teal-dark:#164649;--teal-tint:#e3efee;--warn:#8a3b12;--warn-tint:#f8e8dc;--ok:#2f6b3a;--radius:10px;--touch:44px;color:var(--ink);background:var(--ivory);-webkit-text-size-adjust:100%;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,PingFang SC,Microsoft YaHei,Noto Sans CJK SC,sans-serif;line-height:1.5}*{box-sizing:border-box}body{background:var(--ivory);margin:0}h1,h2,h3{margin:0 0 .5em;line-height:1.25}h1{font-size:1.5rem}h2{font-size:1.2rem}h3{font-size:1.05rem}p{margin:0 0 .75em}a{color:var(--teal)}.shell{max-width:760px;margin:0 auto;padding:0 16px 48px}.shell.wide{max-width:1100px}.topbar{border-bottom:1px solid var(--line);background:var(--paper);z-index:10;justify-content:space-between;align-items:center;gap:12px;padding:12px 16px;display:flex;position:sticky;top:0}.topbar .brand{color:var(--teal);font-weight:700;text-decoration:none}.topbar nav{flex-wrap:wrap;gap:4px;display:flex}.topbar nav a{min-height:var(--touch);border-radius:8px;align-items:center;padding:10px;text-decoration:none;display:inline-flex}.topbar nav a.active{background:var(--teal-tint);font-weight:600}main{padding-top:20px}.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);margin-bottom:16px;padding:16px}.row{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.spread{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;display:flex}.stack>*+*{margin-top:12px}.muted{color:var(--ink-soft);font-size:.92rem}.small{font-size:.85rem}.grid2{grid-template-columns:1fr;gap:16px;display:grid}@media (width>=760px){.grid2{grid-template-columns:1fr 1fr}}button,.btn{font:inherit;min-height:var(--touch);border:1px solid var(--teal);background:var(--teal);color:#fff;cursor:pointer;border-radius:8px;justify-content:center;align-items:center;gap:6px;padding:10px 16px;text-decoration:none;display:inline-flex}button:hover,.btn:hover{background:var(--teal-dark)}button.secondary,.btn.secondary{background:var(--paper);color:var(--teal)}button.secondary:hover{background:var(--teal-tint)}button.danger{background:var(--warn);border-color:var(--warn)}button.link{color:var(--teal);background:0 0;border:none;padding:10px 4px;text-decoration:underline}button:disabled{opacity:.5;cursor:not-allowed}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline-offset:2px;outline:3px solid #e0a43a}label{margin-bottom:4px;font-weight:600;display:block}input,textarea,select{font:inherit;width:100%;min-height:var(--touch);border:1px solid var(--line);color:var(--ink);background:#fff;border-radius:8px;padding:10px 12px}textarea{resize:vertical;min-height:120px}.field{margin-bottom:14px}.tabs{border:1px solid var(--teal);border-radius:8px;margin-bottom:16px;display:flex;overflow:hidden}.tabs button{background:var(--paper);color:var(--teal);border:none;border-radius:0;flex:1}.tabs button[aria-pressed=true]{background:var(--teal);color:#fff}.badge{border:1px solid var(--line);background:var(--ivory);white-space:nowrap;border-radius:999px;padding:2px 8px;font-size:.8rem;font-weight:600;display:inline-block}.badge.teal{background:var(--teal-tint);border-color:var(--teal);color:var(--teal-dark)}.badge.warn{background:var(--warn-tint);border-color:var(--warn);color:var(--warn)}.badge.ok{border-color:var(--ok);color:var(--ok);background:#e4f1e6}.comment{background:var(--teal-tint);border-left:4px solid var(--teal);border-radius:8px;margin-top:10px;padding:10px 12px}.comment .who{color:var(--teal-dark);font-size:.85rem;font-weight:700}.comment p{white-space:pre-wrap;margin:4px 0 0}.answer-text{white-space:pre-wrap}.notice{background:var(--warn-tint);color:var(--warn);border-radius:8px;margin-bottom:12px;padding:10px 12px}.notice.info{background:var(--teal-tint);color:var(--teal-dark)}.rating{gap:4px;display:flex}.rating button{min-width:var(--touch);background:var(--paper);color:var(--teal);flex-direction:column;flex:1 1 0;padding:6px 2px}.rating button[aria-pressed=true]{background:var(--teal);color:#fff}.rating .lbl{font-size:.68rem;line-height:1.15}.saved{color:var(--ink-soft);font-size:.85rem}.files{margin:8px 0 0;padding:0;list-style:none}.files li{border-top:1px dashed var(--line);padding:6px 0}audio{width:100%;max-width:420px}table{border-collapse:collapse;width:100%}th,td{text-align:left;border-bottom:1px solid var(--line);vertical-align:top;padding:8px}.center{justify-content:center;align-items:center;min-height:70vh;display:flex}.login-card{width:100%;max-width:400px}.tabs a{text-align:center;border:none;border-radius:0;flex:1;padding:10px 6px}.tabs a.active{background:var(--teal);color:#fff}@media (width<=600px){.tabs{flex-wrap:wrap}.tabs a{flex:45%}}table{display:block;overflow-x:auto}@media (width>=760px){table{display:table}}@media (width<=700px){.topbar{flex-direction:column;align-items:stretch;gap:0;padding:8px 12px 0}.topbar nav{flex-wrap:nowrap;margin:0 -4px;overflow-x:auto}.topbar nav a{white-space:nowrap}}.privacy h2{margin-top:1.4em;margin-bottom:.3em;font-size:1.05rem}