:root{--accent: #5a7ad0;--accent-2: #7d97e0;--bg: #0e1320;--panel: #1a2236;--panel-2: #232d46;--ink: #e7ecf7;--muted: #93a0bd;--ok: #4fbf85;--bad: #e0655a;--line: #2c3756}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:radial-gradient(1200px 600px at 50% -10%,#18233d,var(--bg));color:var(--ink);font-family:Segoe UI,system-ui,-apple-system,sans-serif;min-height:100vh}#app{max-width:720px;margin:0 auto;padding:18px 16px 40px}.topbar{text-align:center;margin-bottom:14px}.topbar h1{margin:6px 0 2px;letter-spacing:4px;font-size:28px;background:linear-gradient(90deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent}.tagline{margin:0;color:var(--muted);font-size:13px}.controls{display:flex;flex-wrap:wrap;gap:8px;align-items:center;justify-content:center;margin-bottom:16px}.seg{display:inline-flex;background:var(--panel);border:1px solid var(--line);border-radius:10px;overflow:hidden}.segbtn{background:transparent;border:none;color:var(--muted);padding:8px 14px;cursor:pointer;font-size:13px}.segbtn.active{background:var(--accent);color:#fff}.timer{margin-left:auto;font-variant-numeric:tabular-nums;color:var(--muted);background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:8px 12px;font-size:14px}.stage{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:18px}.trail{display:flex;align-items:center;gap:6px;margin-bottom:16px}.dot{width:10px;height:10px;border-radius:50%;background:var(--panel-2);border:1px solid var(--line)}.dot.done{background:var(--ok)}.dot.cur{background:var(--accent);box-shadow:0 0 0 3px #5a7ad040}.trail-label{margin-left:auto;color:var(--muted);font-size:12px}.prompt{font-size:15px;margin:6px 0 12px}.stream{display:flex;flex-direction:column;gap:10px}.chip{display:flex;align-items:center;justify-content:space-between;gap:12px;background:var(--panel-2);border:1px solid var(--line);border-radius:12px;padding:14px 16px;cursor:pointer;color:var(--ink);font-size:17px;text-align:left;transition:transform .08s,border-color .15s}.chip:hover{border-color:var(--accent);transform:translateY(-1px)}.chip-text{font-weight:600}.chip-play{opacity:.8}.hintnote,.reviewnote{color:var(--muted);font-size:12px;margin-top:12px}.banner{border-radius:10px;padding:10px 14px;font-size:14px;margin-bottom:14px}.banner.ok{background:#4fbf8526;color:var(--ok);border:1px solid rgba(79,191,133,.4)}.banner.bad{background:#e0655a26;color:var(--bad);border:1px solid rgba(224,101,90,.4)}.phrasebox{display:flex;align-items:center;justify-content:space-between;gap:12px;background:var(--panel-2);border:1px solid var(--line);border-radius:12px;padding:16px;margin-bottom:14px}.foreign{font-size:22px;font-weight:700}.replay{background:var(--accent);border:none;color:#fff;border-radius:8px;padding:8px 12px;cursor:pointer;font-size:13px;white-space:nowrap}.options{display:flex;flex-direction:column;gap:8px}.opt{background:var(--panel-2);border:1px solid var(--line);color:var(--ink);border-radius:10px;padding:13px 16px;cursor:pointer;font-size:15px;text-align:left}.opt:hover{border-color:var(--accent)}.opt.correct{background:#4fbf8533;border-color:var(--ok)}.opt.dim{opacity:.35;text-decoration:line-through}.ghost{background:transparent;border:1px dashed var(--line);color:var(--muted);border-radius:10px;padding:9px 14px;cursor:pointer;margin-top:12px;font-size:13px}.primary{background:linear-gradient(90deg,var(--accent),var(--accent-2));border:none;color:#fff;border-radius:10px;padding:12px 18px;cursor:pointer;font-size:15px;margin-top:14px;width:100%}.endscreen{text-align:center}.endscreen h2{margin-top:4px}.stats{list-style:none;padding:0;margin:14px 0}.stats li{display:flex;justify-content:space-between;padding:9px 4px;border-bottom:1px solid var(--line);font-size:14px}.stats li span{color:var(--muted)}.foot{text-align:center;color:var(--muted);font-size:11px;margin-top:18px}