/* ─────────────────────────────────────────────────────────────────
   glot.study homepage (v2) — a table of real cards.
   Cream page, white cards that fan, flip and fly; one night-dark panel
   for Drive. Deliberately light-only, like the app.

   The page-level semantic layer below maps tokens.css primitives to the
   roles this page uses (--site-*, --drive-*). Components reference only
   these, never raw values. Linted by tools/check_design_tokens.py.
   ───────────────────────────────────────────────────────────────── */

:root {
  color-scheme: light;

  --site-bg:           var(--primitive-neutral-50);
  --site-bg-subtle:    var(--primitive-neutral-100);
  --site-bg-sunk:      var(--primitive-neutral-200);
  --site-surface:      var(--primitive-neutral-0);
  --site-text:         var(--primitive-neutral-800);
  --site-text-soft:    var(--primitive-neutral-700);
  --site-muted:        var(--primitive-neutral-600);
  --site-mid:          var(--primitive-neutral-500);
  --site-line:         var(--primitive-neutral-300);
  --site-line-strong:  var(--primitive-neutral-400);
  --site-accent:       var(--primitive-brand-500);
  --site-accent-hover: var(--primitive-brand-600);
  --site-accent-light: var(--primitive-brand-300);
  --site-accent-tint:  var(--primitive-brand-50);
  --site-accent-soft:  var(--primitive-brand-100);
  --site-on-accent:    var(--primitive-neutral-0);
  --site-ink:          var(--primitive-neutral-800);
  --site-on-ink:       var(--primitive-neutral-50);
  --site-highlight:    var(--primitive-accent-yellow);
  --site-ok:           var(--primitive-status-ok-600);
  --site-again:        var(--primitive-accent-red);
  --site-warn-tint:    var(--primitive-status-warn-50);
  --site-warn-text:    var(--primitive-status-warn-700);
  --site-ring:         color-mix(in srgb, var(--primitive-neutral-800) 14%, transparent);
  --site-accent-line:  color-mix(in srgb, var(--primitive-brand-500) 22%, transparent);
  --site-accent-wash:  color-mix(in srgb, var(--primitive-brand-500) 5%, transparent);
  --site-accent-glow:  color-mix(in srgb, var(--primitive-brand-500) 35%, transparent);
  --site-accent-fade:  color-mix(in srgb, var(--primitive-brand-500) 0%, transparent);
  --site-yellow-glow:  color-mix(in srgb, var(--primitive-accent-yellow) 60%, transparent);
  --site-yellow-fade:  color-mix(in srgb, var(--primitive-accent-yellow) 0%, transparent);
  --site-focus:        var(--primitive-brand-300);

  /* Drive: dark regardless of theme, like the app */
  --drive-bg:     var(--primitive-neutral-900);
  --drive-text:   var(--primitive-neutral-50);
  --drive-muted:  var(--primitive-neutral-400);
  --drive-band:   var(--primitive-neutral-700);
  --drive-turn:   var(--primitive-brand-500);
  --drive-right:  var(--primitive-status-ok-600);
  --drive-wrong:  var(--primitive-accent-red);
  --drive-paused: var(--primitive-status-warn-600);
  --drive-link:   var(--primitive-brand-300);
  --drive-accent: var(--primitive-accent-yellow);
  --drive-miss:   var(--primitive-accent-pink);
  --drive-line:   var(--color-border-on-dark);
  --drive-glass:  color-mix(in srgb, var(--primitive-neutral-50) 8%, transparent);
  --drive-shadow: 0 30px 60px -30px color-mix(in srgb, var(--primitive-neutral-950) 80%, transparent);

  /* Reader */
  --site-page:  var(--primitive-neutral-100);
  --site-gloss: var(--primitive-brand-50);

  /* Type */
  --site-f-sans: var(--font-sans);
  --site-f-read: Georgia, "Iowan Old Style", "Times New Roman", serif;
  --site-f-mono: var(--font-mono);
  --site-t-display: clamp(2.6rem, 9vw, 4.75rem);
  --site-t-h2: clamp(1.9rem, 5.2vw, 3rem);
  --site-t-h3: 1.375rem;
  --site-t-lede: clamp(1.06rem, 1.6vw, 1.2rem);

  /* Shape + motion */
  --site-r-card:  var(--primitive-radius-xl);
  --site-r-md:    var(--primitive-radius-lg);
  --site-r-lg:    var(--primitive-radius-2xl);
  --site-r-panel: var(--primitive-radius-3xl);
  --site-r-pill:  var(--primitive-radius-full);
  --site-shadow-card: 0 1px 2px color-mix(in srgb, var(--primitive-neutral-800) 6%, transparent), 0 14px 30px -14px color-mix(in srgb, var(--primitive-neutral-800) 28%, transparent);
  --site-shadow-lift: 0 2px 4px color-mix(in srgb, var(--primitive-neutral-800) 6%, transparent), 0 24px 40px -18px color-mix(in srgb, var(--primitive-neutral-800) 35%, transparent);
  --site-shadow-flat: 0 1px 3px color-mix(in srgb, var(--primitive-neutral-800) 8%, transparent);
  --site-spring: var(--ease-spring);
  --site-ease:   var(--ease-default);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; overflow-x: clip; }
body {
  margin: 0; background: var(--site-bg); color: var(--site-text);
  font-family: var(--site-f-sans); font-size: 1rem; line-height: 1.55;
  -webkit-font-smoothing: antialiased; overflow-x: clip;
}
button, input { font: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 3px solid var(--site-focus); outline-offset: 2px; }
h1, h2, h3 { margin: 0; text-wrap: balance; }
p { margin: 0; }
a { color: var(--site-accent); }
svg { display: block; }
.wrap { max-width: 1160px; margin-inline: auto; padding-inline: 16px; }
.eyebrow { font-size: 0.75rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--site-muted); }
.mono { font-family: var(--site-f-mono); font-weight: 500; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip { position: absolute; left: 16px; top: -100px; z-index: 100; background: var(--site-ink); color: var(--site-on-ink); padding: 8px 16px; border-radius: var(--site-r-pill); font-weight: 700; }
.skip:focus { top: 8px; }
section[id], main[id] { scroll-margin-top: 72px; }

/* ── buttons ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: 0 24px; border-radius: var(--site-r-pill);
  border: 1.5px solid transparent; font-weight: 700; font-size: 1rem; text-decoration: none;
  transition: transform 260ms var(--site-spring), background 160ms var(--site-ease), box-shadow 160ms var(--site-ease);
  -webkit-tap-highlight-color: transparent; white-space: nowrap;
}
.btn:hover { transform: translateY(-2px) scale(1.02); }
.btn:active { transform: scale(0.96); transition-duration: 80ms; }
.btn-primary { background: var(--site-accent); color: var(--site-on-accent); }
.btn-primary:hover { background: var(--site-accent-hover); }
.btn-outline { background: var(--site-surface); color: var(--site-accent); border-color: var(--site-line-strong); }
.btn-quiet { background: transparent; color: var(--site-accent); padding: 0 16px; }
.btn-sm { min-height: 44px; padding: 0 16px; font-size: 0.875rem; }
.btn svg { width: 18px; height: 18px; flex: none; }
.soon-pill {
  display: inline-flex; align-items: center; gap: 8px; min-height: 48px; padding: 0 24px;
  border-radius: var(--site-r-pill); border: 1.5px dashed var(--site-line-strong);
  color: var(--site-text-soft); font-weight: 700; font-size: 1rem; white-space: nowrap;
}
.soon-pill svg { width: 18px; height: 18px; }

/* ── nav ── */
.nav {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in srgb, var(--site-bg) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px); -webkit-backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--site-line);
  padding-top: env(safe-area-inset-top, 0px);
}
.nav .wrap { display: flex; align-items: center; gap: 8px; min-height: 60px; }
.brand { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; text-decoration: none; color: var(--site-accent); font-weight: 800; font-size: 1.5rem; letter-spacing: -0.02em; }
.mark { width: 34px; height: 34px; border-radius: 9px; flex: none; box-shadow: 0 1px 0 var(--site-ring); }
.nav-links { display: none; gap: 4px; margin-left: auto; }
.nav-links a { color: var(--site-text-soft); text-decoration: none; font-weight: 600; font-size: 0.875rem; padding: 8px 16px; border-radius: var(--site-r-pill); min-height: 44px; display: inline-flex; align-items: center; }
.nav-links a:hover { background: var(--site-surface); color: var(--site-accent); }
.sound-btn {
  margin-left: auto; width: 44px; height: 44px; border-radius: var(--site-r-pill); border: 1.5px solid var(--site-line-strong);
  background: var(--site-surface); display: grid; place-items: center; color: var(--site-accent);
  transition: transform 260ms var(--site-spring);
}
.sound-btn:active { transform: scale(0.9); }
.sound-btn svg { width: 20px; height: 20px; }
.sound-btn .off { display: none; }
.sound-btn[aria-pressed="false"] { color: var(--site-muted); }
.sound-btn[aria-pressed="false"] .on { display: none; }
.sound-btn[aria-pressed="false"] .off { display: block; }
@media (min-width: 900px) { .nav-links { display: flex; } .sound-btn { margin-left: 8px; } }

/* ── sections ── */
.sec { padding-block: var(--space-3xl); }
.sec-tight { padding-top: 0; }
.sec-head { display: grid; gap: 16px; margin-bottom: var(--space-lg); max-width: 720px; }
.sec-head h2 { font-size: var(--site-t-h2); font-weight: 900; letter-spacing: -0.03em; line-height: 1.02; }
.sec-head p { color: var(--site-muted); font-size: var(--site-t-lede); font-weight: 500; max-width: 60ch; }

/* ── hero ── */
.hero { padding-block: 24px 40px; display: grid; gap: 24px; align-items: center; grid-template-areas: "title" "stack" "rest"; overflow-x: clip; }
.hero-title { grid-area: title; display: grid; gap: 16px; }
.stack-zone { grid-area: stack; }
.hero-rest { grid-area: rest; }
.hero-copy { display: grid; gap: 16px; }
.hero h1 { font-size: var(--site-t-display); font-weight: 900; letter-spacing: -0.045em; line-height: 0.95; }
.hero h1 .hl { color: var(--site-accent); }
.hero h1 .say { position: relative; white-space: nowrap; }
.hero h1 .say::after { content: ""; position: absolute; left: -2%; right: -2%; bottom: 0.06em; height: 0.24em; background: var(--site-highlight); z-index: -1; border-radius: 4px; transform: rotate(-1deg); }
.hero .lede { font-size: var(--site-t-lede); color: var(--site-text-soft); font-weight: 500; max-width: 46ch; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 8px; }
.facts { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; }
.chip { display: inline-flex; align-items: center; gap: 8px; min-height: 32px; padding: 0 16px; border-radius: var(--site-r-pill); background: var(--site-surface); border: 1px solid var(--site-line); font-size: 13px; font-weight: 600; color: var(--site-text-soft); }
.chip::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--site-accent); }
@media (min-width: 900px) {
  .hero { grid-template-columns: 1.05fr 1fr; grid-template-areas: "title stack" "rest stack"; padding-block: 56px 72px; gap: 24px 48px; align-items: end; }
  .hero-rest { align-self: start; }
}

/* ── card stack ── */
.stack-zone { display: grid; gap: 16px; justify-items: center; }
.stack { position: relative; width: min(calc(100% - 40px), 320px); height: 410px; margin-bottom: 24px; perspective: 1400px; touch-action: pan-y; }
.gcard {
  position: absolute; inset: 0; transform-origin: 50% 92%;
  transition: transform 560ms var(--site-spring); will-change: transform; perspective: 1400px;
  -webkit-tap-highlight-color: transparent; user-select: none; -webkit-user-select: none;
}
.gcard.dragging { transition: none; cursor: grabbing; }
.gcard.flying { transition: transform 340ms cubic-bezier(0.5, 0, 0.75, 0); }
.flipper { position: absolute; inset: 0; transform-style: preserve-3d; transition: transform 520ms var(--site-spring); }
.gcard.flipped .flipper { transform: rotateY(180deg); }
.gcard.noflip .flipper { transition: none; }
.face {
  position: absolute; inset: 0; backface-visibility: hidden; -webkit-backface-visibility: hidden;
  background: var(--site-surface); border: 1px solid var(--site-line); border-radius: var(--site-r-card);
  box-shadow: var(--site-shadow-card); padding: 16px; overflow: hidden;
  display: flex; flex-direction: column;
}
.face::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--site-accent); }
.face.back { transform: rotateY(180deg); overflow-y: auto; }
.gcard:not(.top) .face { box-shadow: var(--site-shadow-flat); }
.stack .gcard.top { cursor: grab; }
.c-meta { display: flex; justify-content: space-between; gap: 16px; font-size: 11px; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--site-muted); }
.c-meta .mono { letter-spacing: 0.02em; text-transform: none; }
.c-center { flex: 1; display: grid; place-items: center; align-content: center; gap: 16px; text-align: center; }
.c-word { font-weight: 600; font-size: 52px; line-height: 1.02; letter-spacing: -0.03em; color: var(--site-accent); overflow-wrap: anywhere; }
.c-hint { text-align: center; font-size: 12px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--site-muted); }
.c-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-top: 16px; }
.c-row .c-word { font-size: 34px; }
.c-div { border: 0; height: 1px; background: var(--site-line); margin: 16px 0; width: 100%; }
.c-def { font-style: italic; font-size: 19px; line-height: 1.3; color: var(--site-accent); margin-bottom: 8px; }
.c-sent { font-size: 17px; line-height: 1.5; margin-bottom: 8px; }
.c-trans-toggle { align-self: flex-start; background: none; border: 0; border-bottom: 1px solid var(--site-line); padding: 4px 0; min-height: 44px; font-size: 12px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--site-muted); }
.c-trans-toggle:hover { color: var(--site-accent); border-color: var(--site-accent); }
.c-trans { font-style: italic; color: var(--site-accent); margin-top: 8px; font-size: 15px; animation: rise 280ms var(--site-spring); }
.c-sent-play { margin-top: auto; align-self: flex-start; display: inline-flex; align-items: center; gap: 8px; background: none; border: 0; padding: 8px 0 0; min-height: 44px; font-size: 12px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--site-muted); }
.c-sent-play .pb { width: 34px; height: 34px; }
.pb {
  width: 52px; height: 52px; border-radius: 50%; border: 1px solid var(--site-accent-line);
  background: var(--site-accent-tint); color: var(--site-accent); display: inline-grid; place-items: center; flex: none;
  transition: transform 260ms var(--site-spring), background 160ms var(--site-ease);
}
.pb svg { width: 16px; height: 16px; margin-left: 2px; }
button.pb:hover, .c-sent-play:hover .pb { transform: scale(1.08); background: var(--site-accent-soft); }
.pb.playing, .playing .pb { animation: pulse 700ms var(--site-ease) infinite; background: var(--site-accent-soft); }
.stamp {
  position: absolute; top: 26px; padding: 4px 8px; border: 3px solid currentColor; border-radius: 8px;
  font-weight: 900; font-size: 22px; letter-spacing: 2px; opacity: 0; pointer-events: none; z-index: 3; background: var(--site-surface);
}
.stamp.got { right: 18px; color: var(--site-ok); transform: rotate(10deg); }
.stamp.again { left: 18px; color: var(--site-again); transform: rotate(-10deg); }
.stack-ctl { position: relative; z-index: 120; display: flex; gap: 8px; width: min(100%, 340px); }
.stack-ctl .btn { flex: 1; padding: 0 8px; }
.btn-again { background: var(--site-surface); color: var(--site-again); border-color: var(--site-line-strong); }
.btn-got { background: var(--site-surface); color: var(--site-ok); border-color: var(--site-line-strong); }
.stack-meta { display: flex; align-items: center; justify-content: space-between; gap: 8px; width: min(100%, 340px); font-size: 13px; color: var(--site-muted); font-weight: 600; font-variant-numeric: tabular-nums; }

@keyframes pulse { 0%, 100% { box-shadow: 0 0 0 0 var(--site-accent-glow); } 50% { box-shadow: 0 0 0 8px var(--site-accent-fade); } }
@keyframes pulse-y { 0%, 100% { box-shadow: 0 0 0 0 var(--site-yellow-glow); } 50% { box-shadow: 0 0 0 7px var(--site-yellow-fade); } }
@keyframes rise { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
@keyframes wiggle { 0%, 100% { transform: rotate(0); } 25% { transform: rotate(-4deg); } 75% { transform: rotate(4deg); } }
@keyframes bounce { 0% { transform: scale(1); } 40% { transform: scale(1.12); } 100% { transform: scale(1); } }

/* ── drive ── */
.drive-panel { background: var(--drive-bg); color: var(--drive-text); border-radius: var(--site-r-panel); padding: 40px 16px; display: grid; gap: 24px; }
.drive-panel .eyebrow { color: var(--drive-accent); }
.drive-panel .sec-head p { color: var(--drive-muted); }
.drive-grid { display: grid; gap: 24px; align-items: start; }
@media (min-width: 900px) { .drive-panel { padding: 56px 48px; } .drive-grid { grid-template-columns: minmax(0, 400px) minmax(0, 1fr); gap: 48px; } }
.steps { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; counter-reset: s; }
.steps li { counter-increment: s; display: grid; grid-template-columns: 32px 1fr; gap: 16px; align-items: start; color: var(--drive-text); font-weight: 500; }
.steps li::before { content: counter(s); width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center; font-weight: 800; font-size: 13px; background: var(--drive-band); color: var(--drive-text); }
.steps li span { color: var(--drive-muted); display: block; font-size: 0.875rem; }

.dv { border-radius: 28px; background: var(--drive-bg); border: 1px solid var(--drive-line); overflow: hidden; display: flex; flex-direction: column; min-height: 470px; box-shadow: var(--drive-shadow); }
.dv-band { display: flex; align-items: center; gap: 8px; padding: 16px; background: var(--drive-band); transition: background 200ms var(--site-ease); min-height: 60px; }
.dv-band .t { font-weight: 800; font-size: 20px; letter-spacing: -0.01em; }
.dv-band .s { margin-left: auto; font-size: 13px; font-weight: 600; opacity: 0.85; text-align: right; }
.dv-dot { width: 12px; height: 12px; border-radius: 50%; background: var(--drive-muted); flex: none; }
.dv[data-phase="turn"] .dv-band { background: var(--drive-turn); }
.dv[data-phase="turn"] .dv-dot { background: var(--drive-accent); animation: pulse-y 1s var(--site-ease) infinite; }
.dv[data-phase="right"] .dv-band, .dv[data-phase="right"] .dv-body { background: var(--drive-right); }
.dv[data-phase="wrong"] .dv-band, .dv[data-phase="wrong"] .dv-body { background: var(--drive-wrong); }
.dv[data-phase="paused"] .dv-band { background: var(--drive-paused); }
.dv-body { flex: 1; display: grid; align-content: center; justify-items: center; gap: 8px; padding: 24px 16px; text-align: center; transition: background 220ms var(--site-ease); }
.dv-prog { display: flex; gap: 8px; justify-content: center; }
.dv-prog i { width: 10px; height: 10px; border-radius: 50%; background: var(--drive-band); transition: transform 300ms var(--site-spring), background 200ms; }
.dv-prog i.now { background: var(--drive-text); transform: scale(1.3); }
.dv-prog i.r { background: var(--drive-right); }
.dv-prog i.w { background: var(--drive-wrong); }
.dv[data-phase="right"] .dv-prog i.r, .dv[data-phase="wrong"] .dv-prog i.w { background: var(--drive-text); }
.dv-word { font-size: 56px; font-weight: 700; letter-spacing: -1px; line-height: 1.05; overflow-wrap: anywhere; }
.dv-word.pop { animation: bounce 420ms var(--site-spring); }
.dv-gloss { font-size: 22px; font-weight: 700; min-height: 1.4em; }
.dv-heard { font-size: 15px; color: var(--drive-muted); min-height: 1.5em; font-style: italic; max-width: 32ch; }
.dv[data-phase="right"] .dv-heard, .dv[data-phase="wrong"] .dv-heard { color: var(--drive-text); }
.dv-taps { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding: 0 16px 8px; }
.dv-ctl { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding: 0 16px 16px; }
.dv-btn { min-height: 56px; border-radius: 16px; border: 0; font-weight: 800; font-size: 17px; color: var(--site-on-accent); background: var(--drive-turn); transition: transform 240ms var(--site-spring), opacity 160ms; }
.dv-btn:active { transform: scale(0.96); }
.dv-btn.alt { background: var(--drive-band); }
.dv-btn.end { background: var(--drive-wrong); }
.dv-btn.wide { grid-column: 1 / -1; }
.dv-btn:disabled { opacity: 0.35; cursor: default; }
.dv-side { display: grid; gap: 24px; min-width: 0; }
.cap { font-size: 12px; color: var(--drive-muted); letter-spacing: 0.1em; text-transform: uppercase; font-weight: 700; margin-bottom: 8px; }
.seg { display: inline-flex; padding: 4px; border-radius: var(--site-r-pill); background: var(--drive-band); gap: 4px; }
.seg button { min-height: 44px; padding: 0 16px; border-radius: var(--site-r-pill); border: 0; background: transparent; color: var(--drive-muted); font-weight: 700; font-size: 14px; }
.seg button[aria-pressed="true"] { background: var(--drive-text); color: var(--drive-bg); }
.seg button:disabled { opacity: 0.4; cursor: not-allowed; }
.dv-note { font-size: 14px; color: var(--drive-muted); border-left: 3px solid var(--drive-accent); padding-left: 16px; max-width: 52ch; }
.dv-note b { color: var(--drive-text); }
.dv-col { display: grid; gap: 16px; }
.dv-turns { font-size: 14px; color: var(--drive-muted); max-width: 400px; }
.la { background: var(--drive-glass); border: 1px solid var(--drive-line); border-radius: 24px; padding: 16px; display: grid; grid-template-columns: auto 1fr auto; gap: 16px; align-items: center; max-width: 400px; }
.la .lm { width: 40px; height: 32px; }
.la .lt { font-size: 13px; color: var(--drive-muted); font-weight: 600; }
.la .lp { display: inline-block; padding: 1px 8px; border-radius: var(--site-r-pill); background: var(--drive-band); color: var(--site-on-accent); font-weight: 800; font-size: 13px; margin-top: 4px; transition: background 200ms; }
.la .lp.turn { background: var(--drive-turn); }
.la .lp.paused { background: var(--drive-paused); }
.la .lr { text-align: right; font-variant-numeric: tabular-nums; font-weight: 700; font-size: 15px; }
.la .tally { font-size: 12px; color: var(--drive-muted); font-weight: 600; }
.la .tally .ok { color: var(--drive-right); filter: brightness(1.6); }
.la .tally .no { color: var(--drive-miss); }

/* ── stories ── */
.stories-grid { display: grid; gap: 24px; align-items: start; }
@media (min-width: 900px) { .stories-grid { grid-template-columns: 320px minmax(0, 1fr); gap: 32px; } }
.unlock { background: var(--site-surface); border: 1px solid var(--site-line); border-radius: var(--site-r-lg); padding: 16px; display: grid; gap: 16px; }
.unlock .big { font-size: 48px; font-weight: 900; letter-spacing: -0.03em; line-height: 1; color: var(--site-accent); font-variant-numeric: tabular-nums; }
.unlock label { font-weight: 700; font-size: 0.875rem; color: var(--site-muted); }
.unlock .fine { font-size: 13px; color: var(--site-muted); }
input[type="range"] { width: 100%; accent-color: var(--site-accent); min-height: 44px; }
.tiers { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
.tier { display: grid; grid-template-columns: 36px 1fr auto; gap: 8px; align-items: center; padding: 8px 16px; border-radius: var(--site-r-md); background: var(--site-bg-subtle); border: 1px solid var(--site-line); transition: background 200ms; }
.tier .ic { width: 36px; height: 36px; border-radius: 50%; display: grid; place-items: center; background: var(--site-bg-sunk); color: var(--site-muted); }
.tier .ic svg { width: 18px; height: 18px; }
.tier .ic .i-open { display: none; }
.tier.open .ic { background: var(--site-accent); color: var(--site-on-accent); }
.tier.open .ic .i-open { display: block; }
.tier.open .ic .i-lock { display: none; }
.tier.just .ic { animation: bounce 500ms var(--site-spring); }
.tier b { font-size: 15px; }
.tier small { display: block; color: var(--site-muted); font-size: 13px; font-weight: 500; }
.tier .st { font-size: 12px; font-weight: 700; color: var(--site-muted); }
.tier.open .st { color: var(--site-ok); }
.reader { position: relative; background: var(--site-page); border: 1px solid var(--site-line); border-radius: var(--site-r-lg); padding: 24px; box-shadow: var(--site-shadow-card); min-width: 0; }
.reader-top { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin-bottom: 16px; }
.tag { display: inline-flex; align-items: center; min-height: 24px; padding: 0 8px; border-radius: var(--site-r-pill); font-size: 11px; font-weight: 800; letter-spacing: 0.1em; text-transform: uppercase; background: var(--site-accent-tint); color: var(--site-accent); }
.tag.plain { background: var(--site-bg-sunk); color: var(--site-text-soft); }
.tag.warn { background: var(--site-warn-tint); color: var(--site-warn-text); }
.r-title { font-family: var(--site-f-read); font-size: 30px; line-height: 1.2; font-weight: 700; }
.r-title button { font: inherit; background: none; border: 0; padding: 0; text-align: left; color: inherit; border-radius: 4px; }
.r-hint { font-size: 13px; color: var(--site-muted); margin: 8px 0 16px; }
.rs { font-family: var(--site-f-read); font-size: 21px; line-height: 1.52; padding: 4px 8px; margin: 0 -8px 8px; border-radius: 8px; cursor: pointer; transition: background 160ms; }
.rs:hover { background: var(--site-accent-wash); }
.rs .en { display: block; font-family: var(--site-f-sans); font-size: 15px; font-style: italic; color: var(--site-accent); margin-top: 4px; animation: rise 260ms var(--site-spring); }
.rs-en { font-family: var(--site-f-sans); font-size: 12px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--site-accent); background: var(--site-accent-tint); border: 0; border-radius: var(--site-r-pill); padding: 4px 8px; vertical-align: middle; }
.rs-en:not(:focus-visible) { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.gw { font: inherit; background: none; border: 0; padding: 0; color: inherit; text-decoration: underline dotted var(--site-mid); text-decoration-thickness: 2px; text-underline-offset: 5px; cursor: help; border-radius: 4px; }
.gw:hover, .gw.on { background: var(--site-gloss); }
.gpop { display: inline-flex; gap: 8px; align-items: baseline; margin: 8px 0 4px; padding: 4px 16px; border-radius: 12px; background: var(--site-gloss); font-family: var(--site-f-sans); font-size: 15px; animation: rise 240ms var(--site-spring); }
.gpop b { color: var(--site-accent); }
.r-lock { position: absolute; inset: 0; border-radius: var(--site-r-lg); background: color-mix(in srgb, var(--site-page) 70%, transparent); backdrop-filter: blur(5px); -webkit-backdrop-filter: blur(5px); display: grid; place-items: center; text-align: center; padding: 24px; gap: 8px; align-content: center; }
.r-lock .ic { width: 56px; height: 56px; border-radius: 50%; background: var(--site-ink); color: var(--site-on-ink); display: grid; place-items: center; margin-inline: auto; }
.r-lock .ic svg { width: 26px; height: 26px; }
.r-lock b { font-size: 20px; }
.r-lock span { color: var(--site-muted); font-weight: 500; }

/* ── languages ── */
.langs { display: grid; gap: 16px; }
@media (min-width: 760px) { .langs { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.lang {
  background: var(--site-surface); border: 1px solid var(--site-line); border-radius: var(--site-r-lg); padding: 16px;
  display: grid; grid-template-rows: 1fr auto; gap: 16px; box-shadow: var(--site-shadow-card);
  transition: transform 420ms var(--site-spring), box-shadow 240ms var(--site-ease);
}
.lang:hover { transform: translateY(-6px) rotate(-1deg); box-shadow: var(--site-shadow-lift); }
.lang:nth-child(2):hover { transform: translateY(-6px) rotate(1deg); }
.lang-top { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 16px; align-items: center; min-height: 56px; text-decoration: none; color: inherit; border-radius: 12px; }
.flag { width: 48px; height: 48px; border-radius: 50%; overflow: hidden; position: relative; flex: none; background: var(--site-bg-subtle); }
.flag::after { content: ""; position: absolute; inset: 0; border-radius: 50%; box-shadow: inset 0 0 0 1px var(--site-ring); }
.flag svg { width: 100%; height: 100%; }
.lang:hover .flag { animation: wiggle 420ms var(--site-ease); }
.lang .nm { display: block; font-size: 18px; font-weight: 700; line-height: 1.25; }
.lang .dl { display: block; font-size: 15px; font-weight: 600; color: var(--site-text); }
.lang .mt { display: block; font-size: 13px; color: var(--site-muted); font-weight: 500; }
.chev { width: 20px; height: 20px; color: var(--site-muted); }
.lang-acts { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.lang-acts .btn { padding: 0 8px; }
.lang-acts .btn:only-child { grid-column: 1 / -1; }

/* ── footer ── */
.foot { padding-block: 40px; color: var(--site-muted); font-size: 0.875rem; }
.foot .wrap { display: flex; flex-wrap: wrap; gap: 16px 24px; align-items: center; }
.foot .brand { font-size: 1.1rem; }
.foot .brand .mark { width: 26px; height: 26px; border-radius: 7px; }
.foot a { color: var(--site-text-soft); font-weight: 600; min-height: 44px; display: inline-flex; align-items: center; }
.foot .fine { flex-basis: 100%; }

/* ── language page ── */
.topbar { display: flex; align-items: center; gap: 8px; padding-block: 8px 4px; }
.topbar a { color: var(--site-accent); font-weight: 700; text-decoration: none; min-height: 44px; display: inline-flex; align-items: center; gap: 4px; }
.topbar svg { width: 20px; height: 20px; }
.lp-head { display: grid; grid-template-columns: auto 1fr; gap: 16px; align-items: center; padding-block: 16px 24px; }
.lp-head .flag { width: 72px; height: 72px; }
.lp-head h1 { font-size: clamp(2rem, 7vw, 3.5rem); font-weight: 900; letter-spacing: -0.035em; line-height: 1; }
.lp-head h1:focus { outline: none; }
.lp-head p { color: var(--site-muted); font-weight: 500; margin-top: 8px; }
.lp-grid { display: grid; gap: 24px; padding-bottom: var(--space-2xl); }
@media (min-width: 960px) { .lp-grid { grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); align-items: start; } }
.col { display: grid; gap: 24px; min-width: 0; }
.deck { background: var(--site-surface); border: 1px solid var(--site-line); border-radius: var(--site-r-lg); padding: 16px; display: grid; gap: 16px; box-shadow: var(--site-shadow-card); min-width: 0; }
.deck-h { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.deck h2 { font-size: 26px; font-weight: 800; letter-spacing: -0.02em; }
.deck .meta { color: var(--site-muted); font-size: 14px; font-weight: 600; font-variant-numeric: tabular-nums; }
.deck .desc { color: var(--site-text-soft); font-weight: 500; }
.strip { display: flex; gap: 16px; overflow-x: auto; scroll-snap-type: x mandatory; padding: 8px 4px 16px; margin: 0 -4px; -webkit-overflow-scrolling: touch; }
.strip .gcard { position: relative; flex: none; width: 210px; height: 270px; scroll-snap-align: start; transition: transform 380ms var(--site-spring); perspective: 1000px; cursor: pointer; border-radius: var(--site-r-card); }
.strip .gcard:hover { transform: translateY(-4px) rotate(-1deg); }
.strip .gcard:nth-child(even):hover { transform: translateY(-4px) rotate(1deg); }
.strip .face { padding: 16px 16px 8px; }
.strip .c-word { font-size: 34px; }
.strip .c-row .c-word { font-size: 24px; }
.strip .c-row { margin-top: 8px; }
.strip .c-div { margin: 8px 0; }
.strip .c-def { font-size: 15px; margin-bottom: 8px; }
.strip .c-sent { font-size: 14px; margin-bottom: 4px; }
.strip .pb { width: 44px; height: 44px; }
.strip .c-sent-play { font-size: 11px; }
.strip .c-sent-play .pb { width: 32px; height: 32px; }
.strip .c-trans-toggle { font-size: 11px; }
.strip .c-trans { font-size: 13px; }
.inlist { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; }
.inlist li { display: grid; grid-template-columns: 28px 1fr; gap: 8px; padding: 8px 0; border-top: 1px solid var(--site-line); font-weight: 500; }
.inlist li:first-child { border-top: 0; }
.inlist .k { width: 28px; height: 28px; border-radius: 8px; background: var(--site-accent-tint); color: var(--site-accent); display: grid; place-items: center; }
.inlist .k svg { width: 16px; height: 16px; }
.inlist small { display: block; color: var(--site-muted); font-size: 13px; }
.inlist code { font-family: var(--site-f-mono); font-size: 13px; background: var(--site-bg-subtle); padding: 1px 4px; border-radius: 6px; }
.teaser-drive { background: var(--drive-bg); color: var(--drive-text); border-radius: var(--site-r-lg); padding: 24px; display: grid; gap: 16px; }
.teaser-drive h2 { font-size: 24px; font-weight: 800; }
.teaser-drive p { color: var(--drive-muted); font-weight: 500; }
.teaser-drive .mini-word { font-size: 44px; font-weight: 700; letter-spacing: -1px; }
.teaser-drive .btn { background: var(--drive-turn); color: var(--site-on-accent); justify-self: start; }
.eyebrow-row { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; }
.eyebrow-row a { font-weight: 700; font-size: 14px; text-decoration: none; min-height: 44px; display: inline-flex; align-items: center; }
.get-card { background: var(--site-surface); border: 1.5px dashed var(--site-line-strong); border-radius: var(--site-r-lg); padding: 24px; display: grid; gap: 8px; }
.get-card h2 { font-size: var(--site-t-h3); font-weight: 800; }
.get-card p { color: var(--site-muted); font-weight: 500; }

/* ── toast ── */
.toast { position: fixed; left: 50%; bottom: calc(24px + env(safe-area-inset-bottom, 0px)); transform: translate(-50%, 20px); opacity: 0; z-index: 60; background: var(--site-ink); color: var(--site-on-ink); padding: 16px 24px; border-radius: 14px; font-weight: 600; font-size: 14px; max-width: min(92vw, 420px); text-align: center; pointer-events: none; transition: opacity 200ms, transform 320ms var(--site-spring); }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 1ms !important; animation-iteration-count: 1 !important; transition-duration: 1ms !important; }
  html { scroll-behavior: auto; }
}