:root{--coral:#ff7a59;--coral-2:#fd9578;--coral-3:#fdb7a6;--coral-soft:#fff1ec;--night-rider:#333;--sand:#ede6dd;--pearl:#fbf9f0;--white-smoke:#f9f9f9;--white:#fff;--bermuda:#84d3d3;--nobel:#9f9b9a;--alto:#cfcbca;--bg:var(--pearl);--surface:var(--white);--text:var(--night-rider);--muted:#6b6766;--line:var(--alto);--accent:var(--coral);--ok:#2f8f8f;--ng:#d4553a;--highlight:#ffe3d9;--font-sans:var(--font-inter), var(--font-noto-jp), "Noto Sans CJK JP", Arial, sans-serif;--font-serif:"FT Lambert", Georgia, serif}@media (prefers-color-scheme:dark){:root{--bg:#1f1e1e;--surface:#2a2929;--text:#f3efe9;--muted:#b3aeac;--line:#4a4847;--coral-soft:#3a2a25;--highlight:#5a3428;--ok:#84d3d3;--ng:#fd9578}}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;line-height:1.6}a{color:var(--accent)}h1,h2,h3{font-family:var(--font-serif);margin:0 0 .5em;font-weight:300;line-height:1.25}h1{font-size:2rem}h2{font-size:1.4rem}.shell{max-width:680px;margin:0 auto;padding:24px 16px 64px}.header{justify-content:space-between;align-items:center;margin-bottom:28px;display:flex}.brand{color:var(--text);align-items:baseline;gap:10px;text-decoration:none;display:flex}.brand-mark{font-family:var(--font-serif);font-size:1.6rem;font-weight:300}.brand-sub{color:var(--muted);letter-spacing:.04em;font-size:.8rem}.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;margin-bottom:20px;padding:24px}.eyebrow{color:var(--accent);letter-spacing:.06em;text-transform:uppercase;font-size:.78rem;font-weight:600}.muted{color:var(--muted);font-size:.9rem}.btn{font:inherit;cursor:pointer;background:var(--accent);color:var(--white);border:0;border-radius:999px;justify-content:center;align-items:center;gap:8px;padding:12px 22px;font-weight:600;text-decoration:none;display:inline-flex}.btn:disabled{opacity:.45;cursor:not-allowed}.btn-ghost{color:var(--text);border:1px solid var(--line);background:0 0}.btn-small{padding:6px 14px;font-size:.85rem}.link-btn{color:var(--muted);font:inherit;cursor:pointer;background:0 0;border:0;font-size:.85rem;text-decoration:underline}.player{flex-direction:column;align-items:center;gap:18px;padding:12px 0;display:flex}.play{cursor:pointer;background:var(--accent);width:88px;height:88px;color:var(--white);border:0;border-radius:50%;font-size:2rem}.play:disabled{opacity:.45;cursor:not-allowed}.progress{background:var(--sand);border-radius:999px;width:100%;height:6px;overflow:hidden}.progress>div{background:var(--accent);height:100%;transition:width .25s linear}.time{font-variant-numeric:tabular-nums;color:var(--muted);font-size:.9rem}.countdown{font-family:var(--font-serif);text-align:center;font-size:3rem;font-weight:300}.q-meta{color:var(--muted);justify-content:space-between;margin-bottom:8px;font-size:.85rem;display:flex}.q-prompt{margin:0 0 18px;font-size:1.15rem}.options{flex-direction:column;gap:10px;display:flex}.option{text-align:left;font:inherit;cursor:pointer;background:var(--surface);color:var(--text);border:1px solid var(--line);border-radius:10px;padding:14px 16px}.option[aria-pressed=true]{border-color:var(--accent);background:var(--coral-soft)}.seq-item{border:1px solid var(--line);border-radius:10px;align-items:center;gap:10px;padding:10px 12px;display:flex}.seq-item .n{color:var(--accent);width:1.5em;font-weight:700}.seq-item .t{flex:1}.seq-item button{border:1px solid var(--line);color:var(--text);cursor:pointer;background:0 0;border-radius:6px;width:32px;height:32px}.actions{justify-content:flex-end;margin-top:20px;display:flex}.score{font-family:var(--font-serif);font-size:3.2rem;font-weight:300}.result{border-top:1px solid var(--line);padding:16px 0}.result:first-child{border-top:0}.tag{background:var(--sand);color:var(--night-rider);border-radius:999px;margin-right:6px;padding:2px 8px;font-size:.75rem;display:inline-block}.mark-ok{color:var(--ok);font-weight:700}.mark-ng{color:var(--ng);font-weight:700}.evidence{border-left:3px solid var(--accent);color:var(--muted);margin:8px 0;padding:4px 12px;font-style:italic}.script p{margin:0 0 1em}.script mark{background:var(--highlight);color:inherit;border-radius:3px;padding:0 2px}.glossary{border-collapse:collapse;width:100%}.glossary th{text-align:left;color:var(--accent);background:var(--sand);padding:8px;font-size:.8rem}.glossary td{border-top:1px solid var(--line);vertical-align:top;padding:8px}@media (prefers-color-scheme:dark){.glossary th{color:var(--night-rider)}}.history{border-collapse:collapse;width:100%;font-size:.92rem}.history td{border-top:1px solid var(--line);padding:8px 4px}.history td:last-child{text-align:right;font-variant-numeric:tabular-nums}.sticky-player{z-index:2;background:var(--bg);padding:10px 0;position:sticky;top:0}.login{flex-direction:column;justify-content:center;align-items:center;gap:24px;min-height:80vh;display:flex}.login .brand-mark{margin:0;font-size:2.4rem}