:root{color-scheme:light dark;--bg:#f7f7f8;--card:#fff;--fg:#17181c;--muted:#6b7280;--line:#e5e7eb;--accent:#4f46e5}@media (prefers-color-scheme:dark){:root{--bg:#0e0f13;--card:#171920;--fg:#ececf1;--muted:#9097a5;--line:#262a35;--accent:#818cf8}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.5 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}main{max-width:680px;margin:0 auto;padding:32px 16px 64px}h1{font-size:22px;margin:0 0 4px}.sub{color:var(--muted);margin:0 0 20px;font-size:14px}.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px}.bar{display:flex;align-items:center;gap:12px;margin-bottom:16px}button{background:var(--accent);color:#fff;border:0;border-radius:10px;padding:10px 18px;font-size:15px;cursor:pointer}button.stop{background:transparent;color:var(--fg);border:1px solid var(--line)}.pill{font-size:13px;padding:4px 10px;border-radius:999px;border:1px solid var(--line);color:var(--muted)}.pill[data-s=listening]{color:#059669;border-color:#059669}.pill[data-s=thinking]{color:#d97706;border-color:#d97706}.pill[data-s=speaking]{color:var(--accent);border-color:var(--accent)}.progress{height:6px;background:var(--line);border-radius:99px;overflow:hidden;margin-bottom:16px}.progress>div{height:100%;background:var(--accent);transition:width .2s}.log{display:flex;flex-direction:column;gap:10px;min-height:200px;max-height:50vh;overflow-y:auto}.msg{padding:10px 14px;border-radius:12px;max-width:85%;white-space:pre-wrap}.msg.user{align-self:flex-end;background:var(--accent);color:#fff}.msg.assistant{align-self:flex-start;background:var(--bg);border:1px solid var(--line)}.err{color:#dc2626;font-size:14px;margin-top:12px}.hint{color:var(--muted);font-size:13px;margin-top:14px}main.wide{max-width:1040px}.drop{display:flex;flex-direction:column;align-items:center;gap:6px;padding:48px 16px;border:2px dashed var(--line);text-align:center;cursor:pointer;transition:border-color .15s,background .15s}.drop.over,.drop:hover{border-color:var(--accent)}.drop .big{font-size:34px}.row{margin-top:14px;display:flex;gap:10px}button.ghost{background:transparent;color:var(--fg);border:1px solid var(--line)}button.sm{padding:4px 10px;font-size:13px}button:disabled{opacity:.5;cursor:not-allowed}.layout{display:grid;grid-template-columns:260px 1fr;grid-gap:16px;gap:16px;align-items:start}@media (max-width:760px){.layout{grid-template-columns:1fr}}.side{display:flex;flex-direction:column;gap:10px;position:-webkit-sticky;position:sticky;top:16px;max-height:calc(100vh - 32px)}.side-head{display:flex;justify-content:space-between;align-items:center;gap:8px}.side-head strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:14px}.outline{display:flex;flex-direction:column;gap:2px;overflow-y:auto}button.o{background:transparent;color:var(--fg);text-align:left;border-radius:8px;padding:6px 8px;font-size:14px}button.o:hover:not(:disabled){background:var(--bg)}.chat{display:flex;flex-direction:column;gap:12px;min-height:60vh}.chips{display:flex;flex-wrap:wrap;gap:8px}.chip{background:var(--bg);color:var(--fg);border:1px solid var(--line);border-radius:999px;padding:6px 12px;font-size:13px}.chip:hover:not(:disabled){border-color:var(--accent)}.chat .bar{margin:0}.chat .log{flex:1 1;max-height:none;min-height:300px}.composer{display:flex;gap:8px;align-items:flex-end}.composer textarea{flex:1 1;resize:none;background:var(--bg);color:var(--fg);border:1px solid var(--line);border-radius:10px;padding:10px 12px;font:inherit;max-height:140px}