:root{--bg: #f4f4f5;--surface: #ffffff;--surface-2: #f0f0f2;--fg: #1c1d21;--fg-muted: #6a6d78;--border: #e2e3e7;--accent: #2f6df6;--accent-fg: #ffffff;--danger: #b42318;--danger-bg: #fef3f2;--danger-border: #fda29b;--radius: 12px;font-family:-apple-system,BlinkMacSystemFont,Apple SD Gothic Neo,Pretendard,system-ui,Segoe UI,Roboto,sans-serif;font-size:15px;line-height:1.6;color-scheme:light dark}@media(prefers-color-scheme:dark){:root{--bg: #131417;--surface: #1b1c20;--surface-2: #26272d;--fg: #ececf0;--fg-muted: #9a9ea9;--border: #2e3038;--accent: #5b8dff;--accent-fg: #0d0f13;--danger: #ff9c92;--danger-bg: #2a1917;--danger-border: #6b2f28}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg)}button{font:inherit}.shell{height:100dvh;display:flex;justify-content:center;padding:24px 16px}.panel{width:100%;max-width:760px;display:flex;flex-direction:column;min-height:0;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 18px;border-bottom:1px solid var(--border)}.panel-title{margin:0;font-size:15px;font-weight:600}.panel-sub{margin:2px 0 0;font-size:12px;color:var(--fg-muted)}.list-wrap{position:relative;flex:1;min-height:0}.list{height:100%;overflow-y:auto;overscroll-behavior:contain}.list-inner{display:flex;flex-direction:column;gap:12px;padding:18px}.empty{height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;text-align:center}.empty-title{margin:0;font-size:15px;font-weight:600}.empty-sub{margin:0;font-size:13px;color:var(--fg-muted)}.jump{position:absolute;bottom:14px;left:50%;transform:translate(-50%);padding:6px 14px;font-size:12px;color:var(--fg);background:var(--surface-2);border:1px solid var(--border);border-radius:999px;cursor:pointer;box-shadow:0 2px 10px #0000001f}.bubble-row{display:flex}.bubble-row.is-user{justify-content:flex-end}.bubble{max-width:86%;padding:10px 14px;border-radius:var(--radius);overflow-wrap:anywhere}.is-user .bubble{background:var(--accent);color:var(--accent-fg);border-bottom-right-radius:4px}.is-assistant .bubble{background:var(--surface-2);border-bottom-left-radius:4px}.bubble-text{white-space:pre-wrap}.bubble-note{display:block;margin-top:6px;font-size:12px;color:var(--fg-muted)}.caret{display:inline-block;width:2px;height:1em;margin-left:2px;vertical-align:text-bottom;background:currentColor;animation:blink 1s step-end infinite}@keyframes blink{50%{opacity:0}}@media(prefers-reduced-motion:reduce){.caret{animation:none;opacity:.6}}.notice{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0 18px 12px;padding:10px 14px;font-size:13px;color:var(--danger);background:var(--danger-bg);border:1px solid var(--danger-border);border-radius:10px}.notice-body{display:flex;flex-direction:column;gap:2px;min-width:0}.notice-title{font-weight:600}.notice-hint{color:var(--fg-muted)}.notice-actions{display:flex;gap:4px;flex-shrink:0}.composer{display:flex;align-items:flex-end;gap:10px;padding:12px 18px 16px;border-top:1px solid var(--border)}.composer-input{flex:1;min-height:42px;padding:10px 12px;font:inherit;color:var(--fg);background:var(--surface-2);border:1px solid var(--border);border-radius:10px;resize:none}.composer-input:focus-visible{outline:2px solid var(--accent);outline-offset:1px}.composer-input::placeholder{color:var(--fg-muted)}.composer-actions{display:flex;align-items:center;gap:8px;padding-bottom:2px}.counter{font-size:12px;color:var(--fg-muted)}.counter.is-over{color:var(--danger);font-weight:600}.btn{padding:9px 16px;border:1px solid transparent;border-radius:10px;cursor:pointer;white-space:nowrap}.btn:focus-visible{outline:2px solid var(--accent);outline-offset:1px}.btn:disabled{opacity:.45;cursor:not-allowed}.btn-send{background:var(--accent);color:var(--accent-fg);font-weight:600}.btn-stop{background:var(--surface-2);color:var(--fg);border-color:var(--border)}.btn-ghost{padding:6px 12px;font-size:13px;color:var(--fg-muted);background:transparent;border-color:var(--border)}.btn-ghost:hover:not(:disabled){color:var(--fg)}@media(max-width:600px){.shell{padding:0}.panel{border:0;border-radius:0}.bubble{max-width:92%}}.sources{margin:10px 0 0;padding:8px 0 0;border-top:1px solid var(--border);list-style:none;font-size:12px;color:var(--fg-muted)}.sources li{margin-top:2px;overflow-wrap:anywhere}