:root{color:#17202a;font-synthesis:none;text-rendering:optimizelegibility;--accent:#087f5b;--line:#d5dde3;--radius:10px;background:#edf1f4;font-family:IBM Plex Sans,Noto Sans JP,system-ui,sans-serif}*{box-sizing:border-box}body{min-width:320px;min-height:100dvh;margin:0}button,textarea{font:inherit}button{cursor:pointer}.status-page{background:#edf1f4;place-items:center;min-height:100dvh;padding:24px;display:grid}.status-panel{border:1px solid var(--line);border-radius:var(--radius);background:#fff;width:min(420px,100%);padding:32px;box-shadow:0 16px 40px #1e2c3714}.status-icon{color:#fff;background:var(--accent);border-radius:9px;place-items:center;width:44px;height:44px;display:grid}.status-icon--error{background:#a33b32}.status-panel h1{letter-spacing:-.03em;margin:22px 0 8px;font-size:24px}.status-panel p{color:#64707b;margin:0;font-size:14px;line-height:1.65}.status-panel button{color:#fff;background:#17202a;border:0;border-radius:8px;justify-content:center;align-items:center;gap:8px;width:100%;min-height:44px;margin-top:24px;font-weight:700;display:flex}.status-panel button:active,.send:active,.identity button:active{transform:translateY(1px)}.shell{min-height:100dvh}.topbar{background:#f8fafb;border-bottom:1px solid #cbd4dc;justify-content:space-between;align-items:center;height:68px;padding:0 22px;display:flex}.brand,.identity{align-items:center;gap:11px;display:flex}.brand>span{color:#fff;background:#17202a;border-radius:8px;place-items:center;width:36px;height:36px;font:700 12px monospace;display:grid}.brand strong,.brand small,.identity strong,.identity small{display:block}.brand strong,.identity strong{font-size:13px}.brand small,.identity small{color:#71808c;margin-top:2px;font-size:10px}.identity{text-align:right}.identity button{border:1px solid var(--line);color:#43515d;background:#fff;border-radius:8px;place-items:center;width:36px;height:36px;display:grid}.workspace{border-inline:1px solid var(--line);background:#fff;grid-template-columns:220px minmax(440px,1fr) 260px;max-width:1560px;min-height:calc(100dvh - 68px);margin:0 auto;display:grid}.rail,.activity-panel{background:#f8fafb;padding:24px 18px}.rail{border-right:1px solid var(--line)}.activity-panel{border-left:1px solid var(--line)}.label{color:#71808c;letter-spacing:.09em;text-transform:uppercase;margin:0 0 14px;font:700 10px monospace}.rail dl{margin:0}.rail dl div{padding:10px 0}.rail dt{color:#7c8994;font-size:10px}.rail dd{margin:3px 0 0;font:700 11px monospace}.notice{border-radius:var(--radius);color:#276653;background:#edf8f4;border:1px solid #b9d8ce;grid-template-columns:18px 1fr;gap:6px;margin-top:28px;padding:12px;font-size:11px;line-height:1.55;display:grid}.chat-panel{background:#eef2f4;min-width:0;padding:24px}.thread{border-radius:var(--radius);background:#fff;border:1px solid #c9d3da;height:calc(100dvh - 116px);min-height:560px;overflow:hidden;box-shadow:0 14px 34px #23313b14}.viewport{height:100%;padding:28px 28px 112px;position:relative;overflow-y:auto}.empty{text-align:center;max-width:430px;margin:20vh auto 0}.empty svg{color:var(--accent)}.empty h1{letter-spacing:-.035em;margin:14px 0 7px;font-size:23px}.empty p{color:#687580;margin:0;font-size:13px}.message{max-width:78%;margin-bottom:18px;font-size:14px;line-height:1.7}.message--user{border-radius:var(--radius);color:#fff;background:#25313a;margin-left:auto;padding:10px 14px}.message--assistant{grid-template-columns:30px 1fr;gap:10px;max-width:90%;display:grid}.assistant-mark{color:#fff;background:var(--accent);border-radius:7px;place-items:center;width:30px;height:30px;font:700 9px monospace;display:grid}.assistant-copy{padding-top:2px}.composer-dock{position:absolute;bottom:18px;left:22px;right:22px}.composer{border-radius:var(--radius);background:#fff;border:1px solid #bcc8d0;grid-template-columns:1fr 40px;gap:8px;padding:8px;display:grid;box-shadow:0 8px 22px #1e2c371f}.composer:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px #087f5b21}.composer-input{resize:none;color:#17202a;background:0 0;border:0;outline:0;min-height:40px;max-height:120px;padding:10px 9px}.composer-input::placeholder{color:#77838e}.send{color:#fff;background:var(--accent);border:0;border-radius:8px;place-items:center;width:40px;height:40px;display:grid}.composer-dock>small{color:#7c8792;text-align:center;margin-top:7px;font-size:9px;display:block}.activity-empty{color:#6c7883;font-size:11px;line-height:1.7}.activity{border:1px solid var(--line);border-radius:var(--radius);background:#fff;margin-bottom:8px;padding:11px}.activity>div{align-items:center;gap:6px;display:flex}.activity svg{color:var(--accent)}.activity code{font-size:10px;font-weight:700}.activity>span{color:#7b8791;margin:8px 0 0 21px;font:9px monospace;display:block}.activity>span.complete{color:var(--accent)}@media (width<=1050px){.workspace{grid-template-columns:190px 1fr}.activity-panel{border-top:1px solid var(--line);border-left:0;grid-column:1/3}}@media (width<=720px){.topbar{height:60px;padding:0 14px}.identity>div{display:none}.workspace{display:block}.rail{border-right:0;border-bottom:1px solid var(--line);padding:12px 14px}.rail dl{gap:22px;display:flex}.notice{display:none}.chat-panel{padding:12px}.thread{height:650px;min-height:540px}.viewport{padding:20px 15px 105px}.message{max-width:92%}.activity-panel{padding:18px 14px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}