:root {
  --bg: #f6f7fb; --card: #fff; --ink: #1c2033; --mute: #62688a; --line: #e3e6f2;
  --brand: #4f46e5; --brand-ink: #fff; --ok: #12915b; --ok-bg: #e2f6ec; --no: #c8374b; --no-bg: #fde8eb;
  --shadow: 0 1px 2px rgba(20, 24, 60, .06), 0 6px 20px rgba(20, 24, 60, .06);
  --r: 16px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #11131f; --card: #1b1e30; --ink: #eef0fb; --mute: #a1a7c9; --line: #2b2f48;
    --brand: #7c78ff; --brand-ink: #0f1020; --ok: #4fd39a; --ok-bg: #12332a; --no: #ff8a9a; --no-bg: #3a1a22;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4);
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 17px/1.5 ui-rounded, "Nunito", "Segoe UI", system-ui, -apple-system, sans-serif;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }
:focus-visible { outline: 3px solid var(--brand); outline-offset: 2px; }
main { max-width: 860px; margin: 0 auto; padding: 16px 16px 64px; outline: none; }
h1 { font-size: clamp(1.6rem, 5vw, 2.2rem); line-height: 1.2; margin: .2em 0 .3em; }
h2.sec { font-size: 1.1rem; margin: 28px 0 10px; color: var(--mute); letter-spacing: .02em; }

.top { position: sticky; top: 0; z-index: 5; display: flex; justify-content: space-between; align-items: center; gap: 8px;
  padding: 10px 16px; background: color-mix(in srgb, var(--bg) 90%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.logo { font-weight: 800; font-size: 1.15rem; }
.chips { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; justify-content: flex-end; }
.stat, .chip-btn { background: var(--card); border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px; font-size: .9rem; }

.btn { display: inline-flex; align-items: center; gap: 6px; justify-content: center; min-height: 48px; padding: 10px 20px; border: 2px solid var(--brand);
  border-radius: 14px; background: var(--brand); color: var(--brand-ink); font-weight: 700; }
.btn.ghost { background: transparent; color: var(--brand); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.link { background: none; border: 0; color: var(--mute); text-decoration: underline; padding: 8px; }
.row { display: flex; gap: 10px; flex-wrap: wrap; margin: 14px 0; }
.row.center { justify-content: center; }
.back { display: inline-block; color: var(--mute); margin: 4px 0 8px; }
.lead { color: var(--mute); margin: 0 0 8px; }

.hero { background: linear-gradient(135deg, #4f46e5, #7c3aed); color: #fff; border-radius: 24px; padding: 28px 22px; margin: 8px 0 0; }
.hero p { margin: 0; opacity: .95; }
.hero .btn { background: #fff; color: #3b32c4; border-color: #fff; }

.grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); box-shadow: var(--shadow); }
.unit, .mode { display: flex; align-items: center; gap: 12px; padding: 14px; transition: transform .12s; }
.unit:hover, .mode:hover { transform: translateY(-2px); }
.unit .emo, .mode .emo { font-size: 1.8rem; width: 52px; height: 52px; display: grid; place-items: center; border-radius: 14px;
  background: hsl(var(--h, 240) 80% 92%); flex: none; }
@media (prefers-color-scheme: dark) { .unit .emo, .mode .emo { background: hsl(var(--h, 240) 40% 24%); } }
.meta { display: flex; flex-direction: column; flex: 1; min-width: 0; }
.meta small { color: var(--mute); }
.pct { font-weight: 700; color: var(--brand); font-size: .95rem; }
.meter { height: 6px; background: var(--line); border-radius: 9px; overflow: hidden; margin-top: 6px; }
.meter i { display: block; height: 100%; background: var(--ok); }

.uhead { display: flex; gap: 14px; align-items: center; }
.uhead .emo { font-size: 2.4rem; width: 70px; height: 70px; display: grid; place-items: center; border-radius: 20px; background: hsl(var(--h) 80% 90%); flex: none; }
@media (prefers-color-scheme: dark) { .uhead .emo { background: hsl(var(--h) 40% 24%); } }

.pats { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.pat { padding: 16px; border-top: 5px solid hsl(var(--h) 70% 60%); }
.pat .form { font-weight: 800; font-size: 1.15rem; }
.pat .use { color: var(--mute); font-size: .92rem; margin-bottom: 8px; }
.pat ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.pat li { display: flex; align-items: center; gap: 8px; }
.say { flex: none; border: 1px solid var(--line); background: var(--card); border-radius: 999px; min-width: 40px; min-height: 40px; padding: 4px 12px; }
.say:hover { border-color: var(--brand); }

.tablewrap { overflow-x: auto; margin-top: 14px; border-radius: var(--r); border: 1px solid var(--line); background: var(--card); }
table { border-collapse: collapse; width: 100%; font-size: .95rem; }
th, td { padding: 9px 12px; text-align: left; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { color: var(--mute); font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; }
tr:last-child td { border-bottom: 0; }
.tip { margin-top: 14px; padding: 14px 16px; border-radius: var(--r); background: color-mix(in srgb, var(--brand) 12%, var(--card)); display: flex; gap: 10px; }
.modes { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
.nav { margin-top: 22px; }

.letters { display: grid; grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)); gap: 10px; margin-top: 8px; }
.letter-tile { display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 10px 6px; background: var(--card); border: 1px solid var(--line); border-radius: var(--r); box-shadow: var(--shadow); }
.letter-tile:hover, .letter-tile:active { border-color: var(--brand); }
.letter-tile .L { font-size: 2rem; font-weight: 800; color: var(--brand); line-height: 1.1; }
.letter-tile .L small { font-size: 1.3rem; margin-left: 4px; color: var(--mute); }
.letter-tile .e { font-size: 1.7rem; }
.letter-tile .w { font-size: .85rem; color: var(--mute); }

/* session */
.session { max-width: 620px; margin: 0 auto; }
.bar { display: flex; align-items: center; gap: 12px; margin: 6px 0 22px; }
.bar .x { font-size: 1.3rem; padding: 4px 8px; color: var(--mute); }
.prog { flex: 1; height: 12px; background: var(--line); border-radius: 99px; overflow: hidden; }
.prog i { display: block; height: 100%; width: 0; background: var(--ok); border-radius: 99px; transition: width .3s; }
.qlabel { color: var(--mute); font-weight: 700; margin: 0 0 12px; text-align: center; }
.big { font-size: clamp(1.4rem, 5vw, 1.9rem); font-weight: 800; line-height: 1.3; text-align: center; margin: 12px 0; }
.gap { display: inline-block; min-width: 3.2em; border-bottom: 3px solid var(--brand); color: var(--brand); }
.gap.filled { color: var(--ok); border-color: var(--ok); }
.hint { text-align: center; color: var(--mute); margin: 4px 0 10px; }
.opts { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin: 18px 0; }
.opts.col { flex-direction: column; }
.opts.grid4 { display: grid; grid-template-columns: repeat(2, 1fr); }
.opt { background: var(--card); border: 2px solid var(--line); border-radius: 14px; padding: 12px 22px; min-height: 52px; font-weight: 700; font-size: 1.05rem; box-shadow: var(--shadow); }
.opt.letter { font-size: 2rem; }
.opt:hover:not(:disabled) { border-color: var(--brand); }
.opt.right { border-color: var(--ok); background: var(--ok-bg); }
.opt.wrong { border-color: var(--no); background: var(--no-bg); }
.opt:disabled { cursor: default; }
.play { width: 84px; height: 84px; border-radius: 50%; border: 0; background: var(--brand); color: var(--brand-ink); font-size: 2rem; box-shadow: var(--shadow); }
.mic { display: block; margin: 18px auto 8px; padding: 16px 28px; border-radius: 999px; border: 0; background: var(--brand); color: var(--brand-ink); font-weight: 800; font-size: 1.1rem; }
.mic.live { background: var(--no); animation: pulse 1s infinite; }
@keyframes pulse { 50% { transform: scale(1.05); } }
.heard { text-align: center; min-height: 1.6em; margin: 6px 0; }
.heard .ok, .fb.ok { color: var(--ok); } .heard .no, .fb.no { color: var(--no); }
#spk { text-align: center; }

.tray { min-height: 64px; display: flex; gap: 8px; flex-wrap: wrap; padding: 10px; border: 2px dashed var(--line); border-radius: 14px; margin: 12px 0; align-content: flex-start; }
.tray.pool { border: 0; justify-content: center; }
.tray.good { border-color: var(--ok); background: var(--ok-bg); } .tray.bad { border-color: var(--no); background: var(--no-bg); }
.chip { background: var(--card); border: 2px solid var(--line); border-radius: 12px; padding: 8px 14px; font-weight: 700; min-height: 44px; box-shadow: var(--shadow); }
#chk { display: flex; margin: 8px auto; }

#fb { margin-top: 12px; text-align: center; }
.fb { font-weight: 800; font-size: 1.1rem; padding: 12px; border-radius: 12px; margin-bottom: 10px; }
.fb.ok { background: var(--ok-bg); } .fb.no { background: var(--no-bg); }
#fb .btn { min-width: 60%; }
.done { text-align: center; padding-top: 24px; }
.stars { font-size: 3rem; letter-spacing: 6px; }
.done .row { justify-content: center; }
.foot { color: var(--mute); text-align: center; margin-top: 36px; font-size: .9rem; }

@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } }