:root{--bg: #fbfbfa;--panel: #ffffff;--ink: #1c1c1a;--muted: #5d5d57;--line: #d9d8d2;--accent: #2f4858;--accent-ink: #ffffff;--tutor: #f2f1ec;--danger: #7a2f2f;color-scheme:light dark}@media (prefers-color-scheme: dark){:root{--bg: #16171a;--panel: #1e1f23;--ink: #e8e7e3;--muted: #a5a49e;--line: #34363c;--accent: #8fb0c4;--accent-ink: #14161a;--tutor: #25272c;--danger: #e08c8c}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.55 system-ui,-apple-system,Segoe UI,sans-serif}main{max-width:46rem;margin:0 auto;padding:2rem 1rem 4rem}header.masthead{display:flex;align-items:baseline;justify-content:space-between;gap:1rem;border-bottom:1px solid var(--line);padding-bottom:.75rem;margin-bottom:1.75rem}header.masthead h1{font-size:1.25rem;letter-spacing:.02em;margin:0}header.masthead p{margin:0;color:var(--muted);font-size:.875rem}h2{font-size:1.05rem;margin:0 0 .75rem}section{margin-bottom:2rem}.panel{background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:1rem 1.15rem}.stack{display:flex;flex-direction:column;gap:.85rem}.row{display:flex;gap:.6rem;align-items:center;flex-wrap:wrap}.spread{display:flex;justify-content:space-between;align-items:center;gap:1rem}label{display:block;font-size:.875rem;color:var(--muted);margin-bottom:.3rem}input,select,textarea{width:100%;font:inherit;color:inherit;background:var(--panel);border:1px solid var(--line);border-radius:4px;padding:.5rem .6rem}textarea{resize:vertical;min-height:4.5rem}input:focus-visible,select:focus-visible,textarea:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:1px}button{font:inherit;padding:.5rem .9rem;border-radius:4px;border:1px solid var(--accent);background:var(--accent);color:var(--accent-ink);cursor:pointer}button.secondary{background:transparent;color:var(--ink);border-color:var(--line)}button.discreet{background:none;border:none;color:var(--muted);text-decoration:underline;padding:.25rem}button.danger{background:none;border-color:var(--line);color:var(--danger)}button[disabled]{opacity:.5;cursor:not-allowed}ul.list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.5rem}ul.list li{border:1px solid var(--line);border-radius:5px;padding:.7rem .9rem;background:var(--panel)}.hint{color:var(--muted);font-size:.85rem;margin:.3rem 0 0}.notice{border-left:3px solid var(--accent);padding:.6rem .85rem;background:var(--tutor);border-radius:0 4px 4px 0;font-size:.9rem}.notice.error{border-left-color:var(--danger)}.statement{font-size:1.1rem;margin:0}.transcript{display:flex;flex-direction:column;gap:.75rem;margin-bottom:1rem}.turn{padding:.65rem .85rem;border-radius:5px;border:1px solid var(--line);background:var(--panel);white-space:pre-wrap}.turn.tutor{background:var(--tutor)}.turn .who{display:block;font-size:.75rem;letter-spacing:.04em;text-transform:uppercase;color:var(--muted);margin-bottom:.25rem}.turn.event{border-style:dashed;color:var(--muted);font-size:.875rem;background:none}.aid{font-size:.85rem;color:var(--muted)}.answer{border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:0 6px 6px 0;padding:1rem 1.15rem;background:var(--panel)}.waiting{color:var(--muted);font-size:.9rem}