:root{--bg: #f7f7f8;--card: #ffffff;--line: #e6e6ea;--ink: #1a1a1e;--muted: #6b6b76;--accent: #4f46e5;--accent-ink: #ffffff}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:Pretendard,-apple-system,BlinkMacSystemFont,system-ui,sans-serif;background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased}.app{min-height:100%;display:flex;flex-direction:column}.topbar{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;border-bottom:1px solid var(--line);background:var(--card);position:sticky;top:0;z-index:10}.brand{font-size:18px;letter-spacing:-.02em}.brand b{color:var(--accent)}.status-chip{font-size:12px;padding:4px 10px;border-radius:999px;background:#eef0ff;color:var(--accent);border:1px solid #dfe2ff}.col{width:100%;max-width:760px;margin:0 auto;padding:24px 16px 80px;display:flex;flex-direction:column;gap:16px}.token summary{font-size:12px;color:var(--muted);cursor:pointer}.token input{width:100%;margin-top:8px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;font:inherit}.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px}.card-head{font-weight:600;margin-bottom:10px}.start h2{margin:0 0 12px;font-size:20px;letter-spacing:-.02em}.start textarea{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:12px;font:inherit;resize:vertical}button{font:inherit;cursor:pointer;border-radius:10px;padding:10px 16px;border:1px solid var(--line);background:var(--card)}button:disabled{opacity:.5;cursor:not-allowed}button.primary,.start button{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}button.ghost{background:transparent}.start button{margin-top:12px}.plan-body,.artifact-body{white-space:pre-wrap;word-break:break-word;background:#fafafe;border:1px solid var(--line);border-radius:10px;padding:12px;margin:0;font-size:13px;line-height:1.55;max-height:360px;overflow:auto}.actions{display:flex;gap:10px;margin-top:14px}.actions.sticky{position:sticky;bottom:16px}.timeline ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}.timeline li{display:flex;align-items:center;gap:10px;font-size:14px;padding:6px 0}.timeline li.err{color:#c0392b}.timeline .seq{width:22px;height:22px;border-radius:6px;background:#eef0ff;color:var(--accent);display:inline-flex;align-items:center;justify-content:center;font-size:12px}.timeline .err-msg{color:#c0392b;font-size:12px}.artifact{border-top:1px solid var(--line);padding-top:12px;margin-top:12px}.artifact:first-of-type{border-top:0;padding-top:0;margin-top:0}.artifact-kind{font-size:12px;color:var(--muted);margin-bottom:6px}.done{padding:14px;background:#ecfdf3;border:1px solid #c7eed5;border-radius:12px}.error{padding:12px 14px;background:#fff1f0;border:1px solid #ffd4d1;border-radius:12px;color:#c0392b;font-size:14px}