:root{--bg: #f4f6f9;--surface: #ffffff;--text: #17202c;--muted: #5b6676;--line: #dde2ea;--accent: #087f6c;--accent-text: #ffffff;--warn-bg: #fff4e0;--warn-text: #7a4b00;--danger: #c62828;--radius: 10px;--font: -apple-system, "PingFang SC", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;--mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;color-scheme:light dark}@media(prefers-color-scheme:dark){:root{--bg: #0f1419;--surface: #18202a;--text: #e6ebf1;--muted: #93a0b0;--line: #2a3542;--accent: #2cc9ab;--accent-text: #0f1419;--warn-bg: #3a2c12;--warn-text: #ffd48a;--danger: #ff6b6b}}*{box-sizing:border-box}html,body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:16px;line-height:1.5;-webkit-text-size-adjust:100%}body{padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left)}#lab,#app{max-width:640px;margin:0 auto;padding:16px}h1{font-size:22px;margin:8px 0 4px}h2{font-size:17px;margin:0 0 8px}section{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:14px;margin:12px 0}label{display:flex;flex-direction:column;gap:4px;font-size:14px;color:var(--muted);margin-bottom:10px}input,select{font:inherit;font-size:16px;color:var(--text);background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:10px 12px;width:100%}input:focus-visible,select:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}button{font:inherit;border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:8px;padding:10px 14px;min-height:44px;cursor:pointer}button.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-text);font-weight:600}button.block{width:100%}button:disabled{opacity:.5;cursor:default}.row{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0}.notice{font-size:14px;color:var(--accent);margin:4px 0 0}.hint{color:var(--muted);font-size:14px}.error{color:var(--danger);font-size:14px}.banner{border-radius:var(--radius);padding:12px;margin:12px 0;display:flex;flex-wrap:wrap;gap:8px;align-items:center}.banner.warn{background:var(--warn-bg);color:var(--warn-text)}.banner[hidden]{display:none}pre,.mono{font-family:var(--mono);font-size:13px;white-space:pre-wrap;word-break:break-all;margin:8px 0 0}.timeline{font-family:var(--mono);font-size:12px;padding-left:0;list-style:none;max-height:50vh;overflow-y:auto;border-top:1px solid var(--line);margin-top:8px}.timeline li{padding:4px 0;border-bottom:1px solid var(--line);word-break:break-all}.brand{text-align:center;padding:40px 0 16px}.brand img{width:72px;height:72px;border-radius:16px}.brand h1{font-size:26px}.update-bar{position:fixed;left:12px;right:12px;bottom:calc(12px + env(safe-area-inset-bottom));display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 12px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 4px 16px #0000001f;max-width:616px;margin:0 auto}@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}.stack{display:flex;flex-direction:column;gap:10px}button.link{background:none;border:none;color:var(--accent);padding:8px 4px;min-height:44px}form section button.link{display:block;margin:6px auto 0}button.danger{color:var(--danger);border-color:var(--danger)}.center{text-align:center;margin:32px 0}.bar{display:flex;align-items:center;justify-content:space-between;gap:8px;min-height:48px}.bar h1,.bar h2{margin:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.menu{margin-top:0}.status-line{font-size:13px;color:var(--warn-text);background:var(--warn-bg);border-radius:8px;padding:6px 10px;margin:4px 0 8px}.convs{list-style:none;margin:8px 0;padding:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.convs li+li{border-top:1px solid var(--line)}button.conv{width:100%;display:grid;grid-template-columns:1fr auto;grid-template-areas:"title time" "last badge";gap:2px 8px;text-align:left;border:none;border-radius:0;background:none;padding:12px 14px}.conv-title{grid-area:title;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.conv-time{grid-area:time;font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}.conv-last{grid-area:last;font-size:14px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.badge{grid-area:badge;justify-self:end;min-width:20px;height:20px;padding:0 6px;border-radius:10px;background:var(--danger);color:#fff;font-size:12px;line-height:20px;text-align:center}.chat{display:flex;flex-direction:column;height:calc(100dvh - 32px - env(safe-area-inset-top) - env(safe-area-inset-bottom))}.messages{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:8px;padding:8px 0}.msg{max-width:80%;padding:8px 12px;border-radius:14px;background:var(--surface);border:1px solid var(--line);align-self:flex-start}.msg.out{align-self:flex-end;background:var(--accent);border-color:var(--accent);color:var(--accent-text)}.msg p{margin:0;white-space:pre-wrap;overflow-wrap:anywhere}.msg .meta{display:block;font-size:11px;opacity:.75;margin-top:2px;text-align:right}.composer{display:flex;gap:8px;padding-top:8px;border-top:1px solid var(--line)}.composer input{flex:1}.msg .sender{display:block;font-size:12px;font-weight:600;color:var(--accent);margin-bottom:2px}