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/* Chirami in your browser (/study/): the app's screens on the site's paper and ink (site.css's colours and type).
   build.py puts the "Klee One Study" @font-face rules above this. Phone first: one column, tabs at the bottom;
   from 900px the tabs move into the top bar. */

/* ---------- the page ---------- */
html[data-study] { scroll-behavior: auto; }
body.study { min-height: 100vh; min-height: 100dvh; }
.study section { padding-block: 0; }
.study .kl, .study .kl[lang="ja"] { font-family: "Klee One Study", var(--jp-sans); font-weight: 400; font-synthesis: none; }
.study h1 { font-size: clamp(28px, 5vw, 38px); }
.study h2 { font-size: 22px; }
.study h3 { font-size: 18px; }
.study .muted { font-size: 15px; }
.study .center { text-align: center; }
.study main:focus, .study h1[tabindex="-1"]:focus { outline: none; } /* focused for screen readers as a screen opens */
.study .btn[disabled] { opacity: .55; cursor: default; filter: none; }
.lead-s { font-size: 17px; line-height: 1.55; color: var(--soft); }
.st-page { width: 100%; max-width: 720px; margin: 0 auto; padding: 18px var(--gutter-r) 40px var(--gutter-l); display: grid; gap: 18px; align-content: start; }
.st-page > * { min-width: 0; }
.st-page.kpage, .st-page.path, .st-page.family { max-width: 1000px; }
.st-intro { padding-top: 48px; text-align: center; justify-items: center; }
.has-tabs main { padding-bottom: calc(76px + env(safe-area-inset-bottom, 0px)); }

/* ---------- the top bar, the tabs, the banners ---------- */
.st-top { position: sticky; top: 0; z-index: 6; background: color-mix(in srgb, var(--bg) 90%, transparent); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); padding-top: env(safe-area-inset-top, 0px); }
.st-top-in { max-width: 1000px; margin: 0 auto; min-height: 56px; display: flex; align-items: center; padding-left: var(--gutter-l); padding-right: var(--gutter-r); }
.st-top .brand { font-size: 20px; gap: 9px; }
.st-top .brand img { width: 30px; height: 30px; border-radius: 8px; }
.st-tabs { position: fixed; left: 0; right: 0; bottom: 0; z-index: 7; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); background: color-mix(in srgb, var(--card) 94%, transparent); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-top: 1px solid var(--line); padding: 4px max(8px, env(safe-area-inset-right, 0px)) calc(4px + env(safe-area-inset-bottom, 0px)) max(8px, env(safe-area-inset-left, 0px)); }
.st-tabs[hidden] { display: none; }
.st-tab { display: grid; justify-items: center; gap: 2px; padding: 7px 4px 6px; min-height: 56px; border-radius: 12px; color: var(--soft); text-decoration: none; font: 600 12px/1.2 var(--sys); }
.st-tab svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.st-tab.on { color: var(--ink); }
.st-tab.on svg { stroke-width: 2.2; }
.st-tab:hover { color: var(--ink); }
.st-site { display: none; } /* the main site's links: in the top bar on wide screens, in Settings on every size */
@media (min-width: 900px) {
  .st-site { display: flex; align-items: center; gap: 2px; margin-left: 10px; padding-left: 12px; border-left: 1px solid var(--line); }
  .st-site a { padding: 8px 10px; border-radius: 10px; color: var(--soft); text-decoration: none; font: 600 14px/1.2 var(--sys); }
  .st-site a:hover { color: var(--ink); background: var(--bg2); }
  .st-tabs { left: auto; right: max(var(--gutter-r), calc((100vw - 1000px) / 2 + 20px)); bottom: auto; top: env(safe-area-inset-top, 0px); height: 56px; display: flex; gap: 4px; align-items: center; background: none; border: 0; padding: 0; backdrop-filter: none; -webkit-backdrop-filter: none; }
  .st-tab { display: flex; align-items: center; gap: 7px; min-height: 40px; padding: 8px 12px; font-size: 15px; }
  .st-tab svg { width: 20px; height: 20px; }
  .st-tab.on { background: var(--bg2); }
  .has-tabs main { padding-bottom: 0; }
}
.st-update { position: sticky; top: calc(57px + env(safe-area-inset-top, 0px)); z-index: 5; display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 8px 14px; padding: 10px var(--gutter-r) 10px var(--gutter-l); background: var(--wash); font-size: 15px; font-weight: 600; text-align: center; }
.st-update[hidden] { display: none; }
.st-toast { position: fixed; left: 50%; bottom: calc(24px + env(safe-area-inset-bottom, 0px)); z-index: 9; width: max-content; max-width: calc(100vw - 32px); padding: 12px 18px; border-radius: 14px; background: var(--ink); color: var(--bg); font-size: 15px; font-weight: 600; line-height: 1.4; text-align: center; box-shadow: 0 14px 34px -14px rgba(0,0,0,.5); opacity: 0; transform: translate(-50%, 8px); transition: opacity .2s ease, transform .2s ease; pointer-events: none; }
.st-toast.on { opacity: 1; transform: translate(-50%, 0); }
.has-tabs .st-toast { bottom: calc(84px + env(safe-area-inset-bottom, 0px)); }
@media (min-width: 900px) { .has-tabs .st-toast { bottom: 28px; } }
.st-warn { padding: 12px 14px; border-radius: 12px; background: var(--wash); font-size: 15px; line-height: 1.5; }
.st-error { color: var(--accent); font-weight: 600; }
.st-loading { padding-block: 48px; text-align: center; color: var(--soft); }
.mock-banner { padding: 10px 14px; border-radius: 12px; border: 1.5px dashed var(--accent); color: var(--soft); font-size: 14px; line-height: 1.45; }

/* ---------- controls ---------- */
.btn.wide { width: 100%; max-width: 440px; }
.btn.on-dark { background: var(--night-ink); color: var(--night); }
.btn.ghost.danger { color: var(--accent); box-shadow: inset 0 0 0 2px var(--accent); }
.st-actions { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-top: 4px; }
.linkish { display: inline; min-height: 24px; padding: 2px 0; border: 0; background: none; color: var(--accent); font: inherit; text-decoration: underline; text-underline-offset: 3px; cursor: pointer; }
.st-back { flex: none; display: inline-grid; place-items: center; width: 44px; height: 44px; padding: 0 0 3px; border-radius: 50%; border: 1.5px solid var(--line); background: var(--card); color: var(--ink); font: 400 28px/1 var(--sys); cursor: pointer; }
.st-back:hover { border-color: var(--soft); }
.k-top { display: flex; align-items: center; gap: 12px; min-height: 44px; }
.k-top .muted { flex: 1; text-align: center; padding-right: 56px; }
.sub-h { font: 700 15px/1.4 var(--sys); color: var(--soft); letter-spacing: 0; }
.bar { position: relative; height: 8px; border-radius: 99px; background: var(--line); overflow: hidden; }
.bar > span { position: absolute; inset: 0 auto 0 0; border-radius: inherit; background: var(--ink); }
.drop { display: inline-block; width: 11px; height: 11px; border-radius: 50% 0 50% 50%; transform: rotate(-45deg); background: var(--ink); }
.drop.big { width: 34px; height: 34px; background: var(--accent); justify-self: center; margin: 12px 0 6px; }
.round { flex: none; display: inline-grid; place-items: center; width: 48px; height: 48px; border-radius: 50%; border: 1.5px solid var(--line); background: var(--card); color: var(--ink); font-size: 15px; cursor: pointer; }
.round:hover { border-color: var(--ink); }
.pill-s { display: inline-block; margin-left: 6px; padding: 3px 8px; border-radius: 99px; background: var(--accent); color: var(--accent-ink); font: 700 11px/1.3 var(--sys); letter-spacing: .02em; vertical-align: 2px; }
.choices { display: grid; gap: 10px; }
.choice { display: grid; gap: 2px; width: 100%; min-height: 56px; padding: 12px 16px; border-radius: 14px; border: 1.5px solid var(--line); background: var(--card); color: var(--ink); text-align: left; font: inherit; cursor: pointer; }
.choice:hover { border-color: var(--soft); }
.choice.on { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); background: color-mix(in srgb, var(--wash) 60%, var(--card)); }
.choice-t { font-weight: 700; font-size: 17px; line-height: 1.3; }
.choice-s { font-size: 14px; line-height: 1.4; color: var(--soft); }
.dots { display: flex; gap: 6px; align-items: center; }
.dots span { width: 8px; height: 8px; border-radius: 50%; background: var(--line); }
.dots span.on { background: var(--accent); }

/* ---------- onboarding ---------- */
.ob { max-width: 560px; }
.ob-top { display: flex; align-items: center; justify-content: space-between; min-height: 44px; }
.ob-top > span:first-child { width: 44px; }
.ob-plan { list-style: none; margin: 0; padding: 0; border-radius: 16px; border: 1px solid var(--line); background: var(--card); overflow: hidden; }
.ob-plan li { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 2px 12px; padding: 13px 16px; font-weight: 600; }
.ob-plan li + li { border-top: 1px solid var(--line); }
.ob-plan .muted { font-weight: 400; }
.ob .muted { text-align: center; }

/* ---------- the Welcome: kanji stories first ---------- */
.ob-welcome { max-width: 1000px; gap: 10px; }
.ob-welcome .ob-top { min-height: 16px; justify-content: center; }
.ob-welcome .ob-top > span:first-child { display: none; }
.wl { display: grid; gap: 14px; justify-items: center; text-align: center;
  grid-template-areas: "title" "show" "lead" "start"; }
.wl > h1 { grid-area: title; font-size: clamp(27px, 7.2vw, 46px); }
.wl > .wl-show { grid-area: show; }
.wl > .lead-s { grid-area: lead; max-width: 34rem; font-size: 16px; }
.wl > .st-actions { grid-area: start; width: 100%; margin-top: 0; }
.wl-show { display: grid; gap: 12px; justify-items: center; width: 100%; }
/* A single kanji's square is bigger than each half of 海老's, so every story fills about the same height; the
   stage keeps the tallest one's room, so nothing below it moves. */
.wl-stage { width: 100%; gap: 8px; align-content: start; min-height: 322px; --size: min(164px, 42vw); --size1: min(196px, 50vw); }
.wl-stage .ksq { --size: inherit; }
.wl-stage .ksq:not(.wide) { --size: var(--size1); }
@media (max-width: 379px) { .wl-stage { min-height: 330px; } }
.wl-stage .kplay { display: none !important; } /* no button on the stage while it plays */
.wl-stage .kstory { max-width: 26rem; gap: 4px; align-content: start; }
.wl-stage .ks-end { gap: 4px; }
.wl-stage .ks-k { font-size: 26px; }
.wl-stage .ks-line { font-size: 16px; line-height: 1.45; }
.wl-stage .ks-parts { font-size: 15px; }
.wl-stage .ks-parts .kl { font-size: 19px; }
.wl-stage .ks-note { display: none; }
.wl-stage:focus { outline: none; }
.wl-stage.wait .ks-end { visibility: hidden; } /* until its story starts */
/* From one story to the next: it fades out over the end of its hold, and the next fades in (app.js, PACE.fade). */
.wl-stage > * { transition: opacity .25s ease; }
.wl-stage.wl-out > * { opacity: 0; }
.wl-stage.wl-new > * { animation: wl-in .25s ease; }
@keyframes wl-in { from { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .wl-stage > * { transition: none; } .wl-stage.wl-new > * { animation: none; } }
.wl-foot { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 12px; width: 100%; max-width: 440px; min-height: 40px; }
.wl-dots { grid-column: 2; display: flex; gap: 7px; }
.wl-dots span { width: 8px; height: 8px; border-radius: 50%; background: var(--line); transition: background .3s ease; }
.wl-dots span.on { background: var(--accent); }
.wl-dots span.done { background: var(--ink); }
.wl-replay { grid-column: 3; justify-self: start; min-height: 40px; padding: 7px 16px; font-size: 15px; }
.wl-replay[hidden] { display: inline-flex; visibility: hidden; } /* keeps its place: nothing moves when it shows */
@media (prefers-reduced-motion: reduce) { .wl-dots span { transition: none; } }
@media (min-width: 900px) {
  .ob-welcome { padding-top: 28px; }
  .wl { grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); grid-template-rows: 1fr auto auto auto 1fr; column-gap: 56px; row-gap: 18px;
    grid-template-areas: ". show" "title show" "lead show" "start show" ". show"; justify-items: start; text-align: left; }
  .wl > h1 { font-size: 46px; }
  .wl > .lead-s { font-size: 18px; }
  .wl > .st-actions { justify-content: flex-start; }
  .wl-stage { --size: 218px; --size1: 250px; min-height: 376px; }
  .wl-show { justify-self: stretch; }
}

/* the stages that play by themselves: a small Pause/Play in the corner (WCAG 2.2.2) */
.wl-show { position: relative; }
.seq-pause { position: absolute; top: 0; right: 0; z-index: 2; display: grid; place-items: center; width: 32px; height: 32px; padding: 0; border-radius: 50%; border: 1.5px solid var(--line); background: color-mix(in srgb, var(--card) 85%, transparent); color: var(--soft); cursor: pointer; }
.seq-pause:hover { color: var(--ink); border-color: var(--soft); }
.seq-pause[hidden] { display: none; }
.seq-pause svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
.seq-pause .i-play { display: none; fill: currentColor; stroke-width: 1.5; }
.seq-pause.held .i-pause { display: none; }
.seq-pause.held .i-play { display: inline; }
.wl-foot.solo { grid-template-columns: 1fr; justify-items: center; }
.wl-foot.solo .wl-replay { grid-column: 1; justify-self: center; }

/* step 2: everything about each kanji */
.ob-welcome.ob-tour .ob-top { justify-content: space-between; min-height: 44px; } /* back, then the dots, as on the other steps */
.ob-tour .wl { grid-template-areas: "title" "show" "start"; }
.ob-tour .wl > .tr-next { grid-area: start; width: 100%; margin-top: 0; }
.tr-stage { width: 100%; gap: 12px; align-content: start; --size: min(150px, 40vw); }
.tr-stage .ksq { --size: inherit; }
.tr-stage .kplay { display: none !important; }
.tr-info { display: grid; gap: 10px; justify-items: center; width: 100%; max-width: 440px; }
.tr-reads { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
.tr-chip { display: inline-flex; align-items: baseline; gap: 2px 8px; padding: 8px 14px; border-radius: 14px; background: var(--sq); border: 1.5px solid var(--line); white-space: nowrap; }
.tr-chip .kr-kana { font-size: 22px; line-height: 1.2; }
.tr-word { width: 100%; text-align: left; padding: 10px 16px; }
.tr-word .kw-w { font-size: 26px; }
.tr-family { display: grid; gap: 8px; width: 100%; }
.tr-fam-h { font: 700 15px/1.4 var(--sys); color: var(--soft); }
.tr-tiles.tiles.big { grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 6px; }
.tr-tiles .tile.big { min-height: 66px; padding: 6px 2px; }
.tr-tiles .tile.big .tile-c { font-size: 26px; }
.tr-tiles .tile-m { font-size: 11px; }
.tr-item { visibility: hidden; opacity: 0; transition: opacity .3s ease, visibility 0s linear .3s; }
.tr-item.on { visibility: visible; opacity: 1; transition: opacity .3s ease; }
@media (prefers-reduced-motion: reduce) { .tr-item, .tr-item.on { transition: none; } }
@media (min-width: 900px) {
  .ob-tour .wl { grid-template-areas: ". show" "title show" "start show" ". show"; grid-template-rows: 1fr auto auto 1fr; }
  .tr-stage { --size: 200px; }
  .tr-chip .kr-kana { font-size: 24px; }
}

/* a word's practice square: two squares wide, a kanji in each half */
.ksq.wide { width: calc(var(--size) * 2); background-size: 100% 1px, 1px 100%; background-image: repeating-linear-gradient(90deg, var(--sq-line) 0 5px, transparent 5px 10px), linear-gradient(var(--sq-line), var(--sq-line)); }
.ksq-pair { display: grid; grid-template-columns: 1fr 1fr; width: 100%; }
.ksq-pair .kl { display: grid; place-items: center; font-size: calc(var(--size) * .8); line-height: 1; }
.ks-read { color: var(--soft); font-size: 15px; }
.ks-read .kl { font-size: 18px; color: var(--ink); }
.ks-mean { font-weight: 700; font-size: 17px; }

/* ---------- the paywall ---------- */
.pw { max-width: 560px; gap: 16px; }
.pw-close { display: flex; align-items: center; justify-content: space-between; min-height: 44px; }
.pw-close .btn { margin: 0 0 0 auto; }
.pw-perks { font-size: 16px; }
.pw-plans { display: grid; gap: 10px; }
.plan-c { grid-template-columns: minmax(0, 1fr) auto; align-items: center; column-gap: 14px; }
.plan-c .choice-t, .plan-c .choice-s { grid-column: 1; }
.plan-price { grid-column: 2; grid-row: 1 / span 2; font-weight: 700; font-size: 17px; white-space: nowrap; }
.pw-buy { display: grid; gap: 10px; justify-items: center; text-align: center; }
.pw-fine { display: grid; gap: 4px; font-size: 14px; line-height: 1.5; color: var(--soft); max-width: 440px; }
.pw-disclose { color: var(--ink); font-weight: 600; }
.pw-fine p:empty { display: none; }
.pw-line, .pw-note { font-size: 14px; line-height: 1.5; color: var(--soft); text-align: center; }
.pw-line { color: var(--ink); }
.pw-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 4px 6px; font-size: 14px; color: var(--soft); text-align: center; }

/* ---------- Today ---------- */
.today-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 12px; }
.streak { display: inline-flex; align-items: center; gap: 8px; padding: 7px 13px; border-radius: 99px; border: 1.5px solid var(--line); background: var(--card); font-weight: 700; font-size: 14px; white-space: nowrap; }
.fading { display: grid; gap: 14px; padding: 20px; border-radius: 22px; background: var(--night); color: var(--night-ink); }
.fading-row { display: flex; justify-content: space-between; align-items: center; gap: 14px; }
.fading h2 { font: 700 19px/1.3 var(--sys); color: var(--night-ink); }
.fading p { color: var(--night-soft); font-size: 14px; margin-top: 2px; }
.fading-k { flex: none; white-space: nowrap; }
.fading-k .kl { font-size: 38px; line-height: 1; letter-spacing: .04em; color: var(--night-ink); }
.fading .btn { max-width: none; }
.caught { padding: 18px 20px; border-radius: 22px; background: var(--card); border: 1px solid var(--line); display: grid; gap: 4px; }
.caught h2 { font: 700 18px/1.3 var(--sys); }
.caught p { color: var(--soft); font-size: 15px; }
.new-today { display: grid; gap: 10px; }
.new-cards { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(104px, 1fr)); gap: 10px; }
.new-card { display: grid; justify-items: center; align-content: center; gap: 3px; min-height: 128px; height: 100%; padding: 12px 6px; border-radius: 16px; border: 1.5px solid var(--line); background: var(--card); color: var(--ink); text-decoration: none; text-align: center; }
.new-card:hover { border-color: var(--soft); }
.new-card.next { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
.new-card.learned { background: transparent; }
.nc-k { font-size: 40px; line-height: 1.15; }
.nc-m { font-size: 13px; line-height: 1.3; font-weight: 600; overflow-wrap: anywhere; }
.nc-t { font-size: 12px; color: var(--soft); }
.new-card.learned .nc-t { color: var(--accent); font-weight: 700; }
.more-pro { display: grid; gap: 8px; justify-items: start; padding: 18px 20px; border-radius: 18px; background: var(--card); border: 1px solid var(--line); }
.more-pro-t { font-weight: 700; }
.more-pro p { color: var(--soft); font-size: 15px; }
.scroll-progress { display: grid; gap: 10px; padding: 18px 20px; border-radius: 18px; background: var(--card); border: 1px solid var(--line); }
.sp-row { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.scroll-progress .muted { font-size: 14px; }

/* ---------- Path ---------- */
.path { gap: 6px; }
.path-level { position: relative; padding: 0 0 26px 30px; }
.path-level::before { content: ""; position: absolute; left: 6px; top: 22px; bottom: -6px; width: 2px; background: var(--line); }
.path-level:last-child::before { display: none; }
.pl-head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 12px; }
.pl-head h2 { font-size: 24px; }
.pl-head .muted { margin-left: auto; font-size: 14px; }
.pl-node { position: absolute; left: 0; top: 8px; width: 14px; height: 14px; border-radius: 50%; border: 2.5px solid var(--ink); background: var(--bg); }
.done .pl-node { background: var(--accent); border-color: var(--accent); }
.pl-body { content-visibility: auto; }
.tiles { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(50px, 1fr)); gap: 8px; }
.tiles li { min-width: 0; }
.tile { position: relative; display: grid; place-items: center; aspect-ratio: 1; border-radius: 11px; border: 1.5px solid var(--line); background: var(--card); color: var(--ink); text-decoration: none; }
.tile-c { font-size: 26px; line-height: 1; }
.tile:hover { border-color: var(--soft); }
.tile.st-learning, .tile.st-review, .tile.st-known { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.tile.locked { background: transparent; border-style: dashed; color: var(--faint); }
.tile.here { box-shadow: 0 0 0 2.5px var(--bg), 0 0 0 5px var(--accent); }
.tile-dot { position: absolute; top: 5px; right: 5px; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 1.5px var(--card); }
.tiles.big { grid-template-columns: repeat(auto-fill, minmax(76px, 1fr)); gap: 10px; }
.tile.big { aspect-ratio: auto; min-height: 88px; height: 100%; align-content: center; gap: 3px; padding: 8px 4px; }
.tile.big .tile-c { font-size: 32px; }
.tile-m { font-size: 12px; line-height: 1.25; color: var(--soft); text-align: center; overflow-wrap: anywhere; hyphens: auto; }
.tile.st-learning .tile-m, .tile.st-review .tile-m, .tile.st-known .tile-m { color: color-mix(in srgb, var(--bg) 78%, var(--ink)); }
@media (max-width: 400px) { .tiles { grid-template-columns: repeat(auto-fill, minmax(46px, 1fr)); gap: 7px; } .tile-c { font-size: 24px; } .path-level { padding-left: 26px; } }

/* ---------- a kanji ---------- */
.kpage { gap: 22px; }
.kpage .kp-top { padding-top: 0; }
.k-mean { font-size: clamp(32px, 5vw, 42px); overflow-wrap: anywhere; }
.chip-plain { display: inline-flex; align-items: baseline; gap: 10px; padding: 10px 16px; border-radius: 14px; background: var(--sq); border: 1.5px solid var(--line); justify-self: start; }
.chip-plain .kl { font-size: 26px; line-height: 1.1; }
.study .kword { display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.study .kword > div { display: grid; gap: 2px; min-width: 0; }
.k-actions { position: sticky; bottom: 0; z-index: 3; margin: 0 calc(-1 * var(--gutter-r)) 0 calc(-1 * var(--gutter-l)); padding: 18px var(--gutter-r) calc(14px + env(safe-area-inset-bottom, 0px)) var(--gutter-l); background: linear-gradient(to bottom, transparent, var(--bg) 34%); }
.study .kparts { padding: 20px; }
.family { gap: 22px; }
.fam-head { display: grid; justify-items: center; gap: 4px; text-align: center; }
.fam-part { font-size: 76px; line-height: 1.1; color: var(--accent); }
.family section { display: grid; gap: 10px; }

/* ---------- Review ---------- */
.review { max-width: 560px; min-height: calc(100vh - 57px); min-height: calc(100dvh - 57px); grid-template-rows: auto minmax(300px, 1fr) auto auto; }
.rv-top { display: flex; align-items: center; gap: 12px; }
.rv-top .bar { flex: 1; }
.rv-top .muted { font-size: 14px; white-space: nowrap; }
.rv-card { display: grid; justify-items: center; align-content: center; gap: 10px; min-height: 300px; padding: 28px 20px; border-radius: 26px; background: var(--sq); box-shadow: 0 0 0 1px var(--line), 0 24px 48px -34px rgba(0,0,0,.4); text-align: center; }
.rv-k { font-size: clamp(104px, 30vw, 136px); line-height: 1.05; }
.rv-q { color: var(--soft); font-size: 17px; }
.rv-m { font: 700 30px/1.25 var(--head); overflow-wrap: anywhere; }
.rv-r { color: var(--soft); font-size: 16px; white-space: pre-wrap; }
.rv-r .kl { font-size: 1.15em; color: var(--ink); }
.rv-w { display: inline-flex; flex-wrap: wrap; justify-content: center; align-items: baseline; gap: 4px 10px; margin-top: 4px; padding: 10px 16px; border-radius: 14px; border: 1.5px solid var(--line); font-size: 14px; color: var(--soft); }
.rv-w > .kl { font-size: 22px; color: var(--ink); }
.rv-buttons { display: grid; justify-items: center; padding-bottom: env(safe-area-inset-bottom, 0px); }
.rv-grades { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; width: 100%; }
.rv-grades .btn { padding-inline: 8px; }
.rv-grades .btn:not(.ghost) { background: var(--ink); color: var(--bg); }
.rv-grades .again { color: var(--accent); box-shadow: inset 0 0 0 2px var(--accent); }
.rv-keys { text-align: center; font-size: 13px !important; }
@media (hover: none) { .rv-keys { display: none; } }
.review-done { max-width: 560px; justify-items: center; text-align: center; padding-top: 40px; }

/* ---------- Scroll ---------- */
.scroll-page { max-width: 560px; justify-items: center; }
.pills { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
.pill-c { display: inline-flex; align-items: center; min-height: 40px; padding: 7px 15px; border-radius: 99px; border: 1.5px solid var(--line); background: var(--card); color: var(--ink); text-decoration: none; font-weight: 700; font-size: 15px; }
.pill-c.on { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.hanging { --ink: #1C1B1A; --soft: #5B554C; --line: #DDD3C2; display: grid; justify-items: center; width: 100%; max-width: 380px; color: var(--ink); }
.rod { display: block; width: 100%; height: 14px; border-radius: 7px; background: #3B2E25; position: relative; z-index: 1; }
.sc-paper { display: grid; gap: 16px; width: calc(100% - 24px); padding: 24px 22px 22px; background: #F8F3EA; box-shadow: 0 16px 34px -18px rgba(40, 34, 26, .5); }
.sc-head { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; }
.sc-head h2 { font-size: 24px; color: var(--ink); }
.sc-head .muted { font-size: 13px; white-space: nowrap; }
.sc-chars { display: grid; grid-template-columns: repeat(auto-fill, 32px); gap: 8px; justify-content: start; }
.sc-chars .kl { display: grid; place-items: center; height: 34px; font-size: 27px; line-height: 1; color: var(--ink); }
.sc-todo { height: 34px; border-radius: 6px; border: 1.5px dashed #B9AE9C; }
.sc-seals { display: flex; flex-wrap: wrap; gap: 6px; }
.seal { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 6px; background: #B8432B; color: #F8F3EA; transform: rotate(-4deg); font-size: 20px; }
.seal .kl { color: #F8F3EA; }
.seal.small { font: 700 13px/1 var(--head); }
.sc-foot { display: flex; justify-content: space-between; align-items: flex-end; gap: 12px; padding-top: 6px; }
.sc-streak { font-weight: 700; font-size: 14px; }
.sc-foot .muted { font-size: 13px; }
.sc-foot > .seal { width: 48px; height: 48px; font-size: 28px; }
.scroll-page .st-actions { width: 100%; }

/* ---------- Settings, About, Sources ---------- */
.settings, .about, .sources { gap: 22px; }
.set-sec { display: grid; gap: 8px; }
.sec-t { font: 700 13px/1.4 var(--sys) !important; letter-spacing: .07em; text-transform: uppercase; color: var(--soft); padding-left: 4px; }
.set-card { display: grid; padding: 6px 18px; border-radius: 18px; background: var(--card); border: 1px solid var(--line); }
.about .set-card, .sources .set-card { gap: 8px; padding: 16px 18px; }
.set-card h2.set-t { font: 700 17px/1.35 var(--sys); }
.set-label { padding-top: 12px; padding-bottom: 8px; font-weight: 700; }
.set-card .choices { grid-template-columns: repeat(3, minmax(0, 1fr)); padding-bottom: 12px; }
.set-card .choice { min-height: 48px; padding: 10px 6px; text-align: center; justify-items: center; }
.set-card .choice-t { font-size: 15px; }
.set-row { display: flex; align-items: center; justify-content: space-between; gap: 14px; width: 100%; min-height: 56px; padding: 12px 0; border: 0; border-top: 1px solid var(--line); background: none; color: var(--ink); font: inherit; text-align: left; text-decoration: none; }
.set-card > .set-row:first-child, .set-card > .set-label + .choices + .set-row { border-top: 0; }
.set-label + .choices + .set-row { border-top: 1px solid var(--line) !important; }
.set-row > span:first-child { display: grid; gap: 2px; min-width: 0; }
.set-t { font-weight: 600; font-size: 16px; }
.set-row .muted { font-size: 14px; }
.link-row { cursor: pointer; }
.link-row:hover .set-t { color: var(--accent); }
.link-row .chev { color: var(--soft); font-weight: 700; }
.set-row.danger .set-t { color: var(--accent); }
.set-row[hidden] { display: none; }
.set-row a { font-weight: 600; }
.set-row select { min-height: 44px; max-width: 66%; padding: 8px 12px; border-radius: 12px; border: 1.5px solid var(--line); background: var(--bg); color: var(--ink); font: 600 15px/1.2 var(--sys); }
.switch input[role="switch"] { appearance: none; -webkit-appearance: none; flex: none; position: relative; width: 50px; height: 30px; margin: 0; border-radius: 99px; background: var(--line); cursor: pointer; transition: background .15s ease; }
.switch input[role="switch"]::after { content: ""; position: absolute; top: 3px; left: 3px; width: 24px; height: 24px; border-radius: 50%; background: #FFFFFF; box-shadow: 0 1px 3px rgba(0,0,0,.3); transition: transform .15s ease; }
.switch input[role="switch"]:checked { background: var(--accent); }
.switch input[role="switch"]:checked::after { transform: translateX(20px); }
.key-box { display: grid; gap: 8px; padding: 14px 0 16px; border-top: 1px solid var(--line); }
.pro-key { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.pro-key code { font: 700 16px/1.3 ui-monospace, "SF Mono", Menlo, Consolas, monospace; letter-spacing: .05em; user-select: all; overflow-wrap: anywhere; }
.pro-key .btn { margin: 0; }
.key-box .btn.small { margin: 0; }
.set-card .mock-banner { margin-bottom: 14px; }
.about-name { font: 700 26px/1.2 var(--head); }

/* ---------- dialogs: confirmations, a Pro key, the test checkout ---------- */
.st-dialog, .mock-checkout { width: min(440px, calc(100vw - 32px)); max-height: calc(100dvh - 32px); padding: 24px; border: 0; border-radius: 22px; background: var(--card); color: var(--ink); box-shadow: 0 30px 70px -20px rgba(0,0,0,.5); }
.st-dialog[open], .mock-checkout[open] { display: grid; gap: 14px; }
.st-dialog::backdrop, .mock-checkout::backdrop { background: rgba(20, 18, 16, .5); }
.st-dialog h2, .mock-checkout h2 { font-size: 22px; }
.st-dialog p, .mock-checkout p { color: var(--soft); font-size: 15px; line-height: 1.5; }
.mock-checkout .mock-checkout-plan { color: var(--ink); font-weight: 700; font-size: 17px; }
.dlg-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 10px; margin-top: 4px; }
.key-field { display: grid; gap: 6px; font-weight: 600; font-size: 15px; }
.key-field input { width: 100%; min-height: 50px; padding: 10px 14px; border-radius: 12px; border: 1.5px solid var(--line); background: var(--bg); color: var(--ink); font: 600 17px/1.2 ui-monospace, "SF Mono", Menlo, Consolas, monospace; letter-spacing: .04em; text-transform: uppercase; }
.key-field input::placeholder { color: var(--faint); }
.key-msg { min-height: 1.5em; }

@media (prefers-reduced-motion: reduce) {
  .st-toast, .switch input[role="switch"], .switch input[role="switch"]::after { transition: none; }
}