/* ===== Tokens ===== */
:root {
  --bg: #0b0d14;
  --text: #eef0f7;
  --muted: rgba(238, 240, 247, .64);
  --faint: rgba(238, 240, 247, .38);
  --line: rgba(255, 255, 255, .09);

  --glass: linear-gradient(150deg, rgba(255, 255, 255, .12), rgba(255, 255, 255, .035) 55%, rgba(255, 255, 255, .06));
  --glass-flat: rgba(255, 255, 255, .06);
  --glass-hover: rgba(255, 255, 255, .09);
  --glass-edge-a: rgba(255, 255, 255, .55);
  --glass-edge-b: rgba(255, 255, 255, .05);
  --glass-shadow: 0 20px 60px rgba(0, 0, 0, .45), 0 2px 8px rgba(0, 0, 0, .25);
  --glass-inset: inset 0 1px 0 rgba(255, 255, 255, .16), inset 0 -1px 0 rgba(255, 255, 255, .03);
  --well: rgba(0, 0, 0, .28);
  --sheet: rgba(11, 13, 20, .66);
  --pane: linear-gradient(150deg, rgba(255, 255, 255, .095), rgba(255, 255, 255, .03) 60%, rgba(255, 255, 255, .055));
  --pane-shadow: 0 10px 30px rgba(0, 0, 0, .28);
  --thumb: linear-gradient(150deg, rgba(255, 255, 255, .26), rgba(255, 255, 255, .1));

  --marker: #f5cd55;
  --marker-soft: rgba(245, 205, 85, .26);
  --marker-strong: rgba(245, 205, 85, .56);

  --game: #b9a4ff;
  --tech: #4fd6bd;
  --ok: #4fd6bd;
  --fix: #ff8f7d;

  --blob-1: #f2b93b;
  --blob-2: #6f5cff;
  --blob-3: #17b3a3;
  --blob-opacity: .34;

  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, "Hiragino Mincho ProN", "Yu Mincho", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", Meiryo, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --ease: cubic-bezier(.2, .8, .2, 1);
  --spring: cubic-bezier(.34, 1.45, .5, 1);
  --list-w: 424px;
  --gap: 14px;
  color-scheme: dark;
}
:root[data-theme="light"] {
  --bg: #e8ebf3;
  --text: #141726;
  --muted: rgba(20, 23, 38, .64);
  --faint: rgba(20, 23, 38, .40);
  --line: rgba(20, 23, 38, .08);

  --glass: linear-gradient(150deg, rgba(255, 255, 255, .78), rgba(255, 255, 255, .44) 55%, rgba(255, 255, 255, .6));
  --glass-flat: rgba(255, 255, 255, .5);
  --glass-hover: rgba(255, 255, 255, .72);
  --glass-edge-a: rgba(255, 255, 255, 1);
  --glass-edge-b: rgba(255, 255, 255, .35);
  --glass-shadow: 0 20px 60px rgba(40, 52, 100, .16), 0 2px 8px rgba(40, 52, 100, .08);
  --glass-inset: inset 0 1px 0 rgba(255, 255, 255, .9), inset 0 -1px 0 rgba(255, 255, 255, .3);
  --well: rgba(255, 255, 255, .55);
  --sheet: rgba(232, 235, 243, .6);
  --pane: linear-gradient(150deg, rgba(255, 255, 255, .72), rgba(255, 255, 255, .42) 60%, rgba(255, 255, 255, .56));
  --pane-shadow: 0 10px 30px rgba(40, 52, 100, .12);
  --thumb: linear-gradient(150deg, rgba(255, 255, 255, 1), rgba(255, 255, 255, .8));

  --marker: #b98400;
  --marker-soft: rgba(255, 196, 30, .38);
  --marker-strong: rgba(255, 196, 30, .72);

  --game: #6a4fe0;
  --tech: #0f9a83;
  --ok: #0f9a83;
  --fix: #d4513c;

  --blob-1: #ffc94d;
  --blob-2: #9d8cff;
  --blob-3: #5fd6c8;
  --blob-opacity: .55;
  color-scheme: light;
}

@property --draw { syntax: "<number>"; inherits: false; initial-value: 0; }
@property --h { syntax: "<percentage>"; inherits: false; initial-value: 42%; }

/* ===== Base ===== */
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
  transition: background-color .4s var(--ease), color .4s var(--ease);
}
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; padding: 0; -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 2px solid var(--marker); outline-offset: 2px; border-radius: 10px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

/* ===== Ambient light behind the glass ===== */
.ambient { position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; }
.ambient i {
  position: absolute; width: 62vmax; height: 62vmax; border-radius: 50%;
  filter: blur(90px); opacity: var(--blob-opacity);
  will-change: transform;
}
.ambient i:nth-child(1) { background: var(--blob-1); top: -30vmax; right: -18vmax; animation: drift1 38s ease-in-out infinite alternate; }
.ambient i:nth-child(2) { background: var(--blob-2); bottom: -34vmax; left: -22vmax; animation: drift2 46s ease-in-out infinite alternate; }
.ambient i:nth-child(3) { background: var(--blob-3); top: 30%; left: 38%; width: 40vmax; height: 40vmax; opacity: calc(var(--blob-opacity) * .6); animation: drift3 54s ease-in-out infinite alternate; }
@keyframes drift1 { to { transform: translate(-14vmax, 12vmax) scale(1.12); } }
@keyframes drift2 { to { transform: translate(16vmax, -10vmax) scale(.9); } }
@keyframes drift3 { to { transform: translate(-18vmax, -8vmax) scale(1.25); } }

/* ===== Glass material ===== */
.pane-list, .detail-top, .sentence-card, .word-list {
  position: relative;
  background: var(--glass);
  -webkit-backdrop-filter: blur(26px) saturate(175%);
  backdrop-filter: blur(26px) saturate(175%);
  box-shadow: var(--glass-inset), var(--glass-shadow);
}
/* specular rim: a bright edge at the top-left and bottom-right, fading between */
.pane-list::before, .detail-top::before, .sentence-card::before, .word-list::before, .tabs::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px; pointer-events: none;
  background: linear-gradient(140deg, var(--glass-edge-a), var(--glass-edge-b) 32%, var(--glass-edge-b) 68%, var(--glass-edge-a));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: .7;
}

/* ===== Layout ===== */
.app { display: grid; grid-template-columns: var(--list-w) 1fr; height: 100vh; height: 100dvh; }
.pane { min-height: 0; }
.pane-list {
  display: flex; flex-direction: column;
  margin: var(--gap) 0 var(--gap) var(--gap);
  border-radius: 30px;
  overflow: hidden;
}
.pane-detail { overflow-y: auto; outline: none; }

/* ===== Masthead ===== */
.masthead { display: flex; align-items: center; justify-content: space-between; padding: calc(16px + env(safe-area-inset-top)) 18px 8px 22px; }
.brand { display: flex; align-items: baseline; gap: 10px; min-width: 0; }
.brand-mark {
  --draw: 0; --h: 38%;
  font: italic 600 27px/1 var(--serif); letter-spacing: .02em; padding: 0 3px;
  background-image: linear-gradient(var(--marker-strong), var(--marker-strong));
  background-repeat: no-repeat; background-position: 0 88%;
  background-size: calc(var(--draw) * 100%) var(--h);
  animation: draw .9s var(--ease) .25s forwards;
}
.brand-sub { font: 11px/1 var(--mono); color: var(--faint); letter-spacing: .04em; white-space: nowrap; display: inline-flex; gap: 6px; }
.brand-sub span + span::before { content: "·"; margin-right: 6px; }
.tools { display: flex; gap: 6px; }
.icon-btn, .nav-btn {
  width: 38px; height: 38px; border-radius: 50%;
  display: grid; place-items: center;
  color: var(--muted); font: 600 14px/1 var(--sans);
  background: var(--glass-flat);
  box-shadow: var(--glass-inset);
  transition: transform .35s var(--spring), background-color .2s, color .2s;
}
.icon-btn:hover, .nav-btn:hover:not(:disabled) { background: var(--glass-hover); color: var(--text); }
.icon-btn:active, .nav-btn:active:not(:disabled), .chip:active, .row:active, .word-item:active { transform: scale(.95); }
.icon-btn[aria-pressed="true"] { background: var(--marker-soft); color: var(--text); box-shadow: var(--glass-inset), 0 0 0 1px var(--marker-soft); }
.nav-btn:disabled { opacity: .3; cursor: default; }

/* ===== Search ===== */
.search { position: relative; margin: 8px 16px 12px; }
.search input {
  width: 100%; height: 48px; padding: 0 44px;
  border-radius: 999px; border: 1px solid var(--line);
  background: var(--well); color: var(--text); font: 16px var(--sans);
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, .18);
  -webkit-appearance: none; appearance: none;
  transition: border-color .2s, box-shadow .3s var(--ease);
}
.search input::placeholder { color: var(--faint); }
.search input:focus { outline: none; border-color: var(--marker-strong); box-shadow: inset 0 2px 6px rgba(0, 0, 0, .18), 0 0 0 4px var(--marker-soft); }
.search input::-webkit-search-cancel-button { -webkit-appearance: none; }
.search-icon { position: absolute; left: 17px; top: 15px; color: var(--faint); }
.search-kbd {
  position: absolute; right: 14px; top: 13px;
  font: 11px/20px var(--mono); color: var(--faint);
  border: 1px solid var(--line); border-radius: 6px; padding: 0 6px;
}
.search input:focus ~ .search-kbd, .search input:not(:placeholder-shown) ~ .search-kbd { display: none; }
.search-clear {
  position: absolute; right: 9px; top: 50%; width: 32px; height: 32px; margin-top: -16px;
  display: grid; place-items: center; border-radius: 50%;
  color: var(--muted); background: var(--glass-flat); box-shadow: var(--glass-inset);
  animation: clear-in .4s var(--spring) backwards;
  transition: transform .35s var(--spring), background-color .2s, color .2s;
}
@keyframes clear-in { from { opacity: 0; transform: scale(.5) rotate(-90deg); } }
.search-clear svg { width: 15px; height: 15px; stroke-width: 2.2; }
.search-clear:hover { color: var(--text); background: var(--glass-hover); }
.search-clear:active { transform: scale(.85); }
.search-clear[hidden] { display: none; }

/* ===== Segmented tabs with a liquid thumb ===== */
.tabs {
  position: relative;
  display: grid; grid-template-columns: repeat(var(--n, 2), minmax(0, 1fr));
  margin: 0 16px 10px; padding: 4px; border-radius: 999px;
  background: var(--well);
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, .18);
}
.tabs::before { opacity: .22; }
.tab-thumb {
  position: absolute; top: 4px; bottom: 4px; left: 4px; width: calc((100% - 8px) / var(--n, 2));
  transform: translateX(calc(100% * var(--k, 0)));
  border-radius: 999px;
  background: var(--glass); box-shadow: var(--glass-inset), 0 4px 14px rgba(0, 0, 0, .25);
  transition: transform .6s var(--spring);
}
.tab {
  position: relative; z-index: 1; padding: 8px 12px;
  color: var(--muted); font-weight: 600; font-size: 14px; border-radius: 999px;
  transition: color .3s;
}
.tab[aria-selected="true"] { color: var(--text); }
.tab { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tab-count { font: 11px var(--mono); color: var(--faint); margin-left: 3px; }

.pos-filter { display: flex; gap: 6px; padding: 2px 16px 12px; overflow-x: auto; scrollbar-width: none; }
.pos-filter::-webkit-scrollbar { display: none; }
.pos-filter[hidden] { display: none; }
.chip {
  flex: none; padding: 5px 12px; border-radius: 999px;
  background: var(--glass-flat); box-shadow: var(--glass-inset);
  color: var(--muted); font-size: 12.5px; white-space: nowrap;
  transition: transform .35s var(--spring), background-color .2s, color .2s;
}
.chip:hover { color: var(--text); background: var(--glass-hover); }
.chip[aria-pressed="true"] { background: var(--marker-soft); color: var(--text); box-shadow: var(--glass-inset), 0 0 0 1px var(--marker-soft); }

/* ===== Results ===== */
.results {
  flex: 1; overflow-y: auto; padding: 6px 10px calc(16px + env(safe-area-inset-bottom));
  border-top: 1px solid var(--line);
  scrollbar-width: thin; scrollbar-color: var(--line) transparent;
}
.row {
  display: grid; grid-template-columns: 44px 1fr; gap: 1px 10px;
  width: 100%; text-align: left; padding: 10px 12px; border-radius: 16px;
  transition: background-color .2s, transform .35s var(--spring), box-shadow .2s;
}
.row:hover { background: var(--glass-flat); }
.row[aria-current="true"] { background: var(--glass-hover); box-shadow: var(--glass-inset), inset 3px 0 0 var(--marker); }
.results.enter .row { animation: rise .5s var(--ease) both; animation-delay: calc(var(--i, 20) * 24ms); }
.row-num { font: 11.5px/22px var(--mono); color: var(--faint); grid-row: span 2; }
.row-head { display: flex; align-items: baseline; gap: 8px; min-width: 0; }
.row-word { font: 18px/22px var(--serif); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.row-pos { flex: none; font-size: 11px; color: var(--faint); }
.row-sub { color: var(--muted); font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.row-sentence { font: 15.5px/1.45 var(--serif); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.results mark.q { background: var(--marker-soft); color: inherit; border-radius: 4px; }
.more {
  display: block; margin: 12px auto; padding: 8px 18px; border-radius: 999px;
  background: var(--glass-flat); box-shadow: var(--glass-inset); color: var(--muted); font-size: 13px;
}
.more:hover { color: var(--text); background: var(--glass-hover); }
.empty { padding: 36px 20px; color: var(--muted); text-align: center; font-size: 14px; }

/* ===== Detail ===== */
.detail { max-width: 780px; margin: 0 auto; padding: var(--gap) 36px 90px; }
.detail-top {
  position: sticky; top: var(--gap); z-index: 5;
  display: flex; align-items: center; gap: 8px;
  padding: 6px; border-radius: 999px;
}
.nav-btn.back { display: none; }
.eyebrow { font: 12px var(--mono); color: var(--muted); letter-spacing: .06em; padding-left: 10px; }
.spacer { flex: 1; }

/* 560 ticks: where this sentence sits in the book */
.rail {
  position: relative; height: 30px; margin: 30px 8px 36px; cursor: pointer;
  background:
    linear-gradient(var(--line), var(--line)) 0 50% / 100% 1px no-repeat,
    repeating-linear-gradient(90deg, var(--faint) 0 1px, transparent 1px calc(100% / 5.59)) 0 50% / 100% 14px no-repeat,
    repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px calc(100% / 55.9)) 0 50% / 100% 8px no-repeat;
}
.rail-cursor {
  position: absolute; top: 3px; bottom: 3px; width: 4px; margin-left: -2px; border-radius: 4px;
  left: calc(var(--p) * 100%);
  background: var(--marker); box-shadow: 0 0 14px var(--marker), 0 0 3px var(--marker);
  transition: left .8s var(--spring);
}
.rail-label {
  position: absolute; top: -17px; left: clamp(16px, calc(var(--p) * 100%), calc(100% - 16px)); transform: translateX(-50%);
  font: 11px var(--mono); color: var(--marker); white-space: nowrap; pointer-events: none;
  transition: left .8s var(--spring);
}
.rail::after {
  content: attr(data-hover); position: absolute; bottom: -19px; left: var(--hx, 0); transform: translateX(-50%);
  font: 11px var(--mono); color: var(--muted); opacity: 0; transition: opacity .15s; pointer-events: none;
}
.rail:hover::after { opacity: 1; }
.rail { touch-action: none; -webkit-user-select: none; user-select: none; }
.rail.dragging { z-index: 6; }
.rail.dragging::after { opacity: 0; }
.rail.dragging .rail-cursor { top: -3px; bottom: -3px; width: 6px; margin-left: -3px; transition: left .12s var(--ease), top .25s var(--spring), bottom .25s var(--spring); }
.rail.dragging .rail-label { transition: left .12s var(--ease); font-size: 12px; }
.rail-peek {
  position: absolute; z-index: 8; top: calc(100% + 12px); left: 50%;
  width: min(100%, 520px); padding: 12px 16px; border-radius: 20px;
  background: var(--glass); background-color: color-mix(in srgb, var(--bg) 82%, transparent);
  -webkit-backdrop-filter: blur(26px) saturate(180%); backdrop-filter: blur(26px) saturate(180%);
  box-shadow: var(--glass-inset), var(--glass-shadow), 0 0 0 1px var(--glass-edge-b);
  font: 16px/1.5 var(--serif); color: var(--text);
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
  opacity: 0; transform: translate(-50%, -6px) scale(.97); pointer-events: none;
  transition: opacity .2s var(--ease), transform .4s var(--spring);
}
.rail-peek b { font: italic 600 16px var(--serif); color: var(--marker); margin-right: 8px; }
.rail.dragging .rail-peek { opacity: 1; transform: translate(-50%, 0); }

/* swipe between sentences: the card follows the finger */
.detail.settled .sentence-card, .detail.settled .headword, .detail.settled .ety-card {
  animation: none; transform: translateX(var(--sx, 0px)); opacity: var(--so, 1);
  transition: transform .5s var(--spring), opacity .3s var(--ease);
}
.detail.swiping .sentence-card, .detail.swiping .headword, .detail.swiping .ety-card { transition: none; }
.detail.settled .headword, .detail.settled .ety-card { transform: translateX(calc(var(--sx, 0px) * .55)); }

/* floating dock and sentence search (phones only) */
.dock { display: none; }
.seek { display: none; }
.dock-num, .card-num { cursor: pointer; touch-action: manipulation; -webkit-user-select: none; user-select: none; }

/* number dial: rises out of the dock */
.dial {
  position: fixed; inset: 0; z-index: 40;
  display: grid; place-items: end center;
  padding: 0 16px calc(14px + env(safe-area-inset-bottom));
  background: rgba(0, 0, 0, 0);
  transition: background-color .3s var(--ease);
}
.dial.open { background: rgba(0, 0, 0, .34); }
@media (min-width: 861px) { .dial { place-items: center; } }
.dial-card {
  position: relative; width: min(340px, 100%);
  padding: 18px 18px 18px; border-radius: 36px;
  background: var(--glass); background-color: color-mix(in srgb, var(--bg) 58%, transparent);
  -webkit-backdrop-filter: blur(30px) saturate(190%); backdrop-filter: blur(30px) saturate(190%);
  box-shadow: var(--glass-inset), var(--glass-shadow);
  transform-origin: 50% 100%;
  transform: translateY(30px) scale(.36, .16); opacity: 0;
  transition: transform .6s var(--spring), opacity .22s var(--ease);
}
.dial.open .dial-card { transform: none; opacity: 1; }
.dial-card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px; pointer-events: none;
  background: linear-gradient(140deg, var(--glass-edge-a), var(--glass-edge-b) 32%, var(--glass-edge-b) 68%, var(--glass-edge-a));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: .8;
}
.dial-card.shake { animation: dial-shake .42s var(--ease); }
.dial-screen { display: flex; align-items: baseline; justify-content: center; gap: 8px; padding-top: 4px; }
.dial-num { font: italic 400 54px/1.1 var(--serif); color: var(--marker); }
.dial-num.ph { color: var(--faint); }
.dial-num.pop { animation: dial-pop .35s var(--spring); }
.dial-of { font: 12px var(--mono); color: var(--faint); }
.dial-peek {
  min-height: 3em; margin: 6px 6px 16px; text-align: center;
  font-size: 13px; line-height: 1.5; color: var(--faint);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.dial-peek.en { font: 15.5px/1.5 var(--serif); color: var(--muted); }
.dial-keys { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.dial-keys button {
  height: 62px; border-radius: 999px;
  display: grid; place-items: center;
  font: 400 27px/1 var(--sans); color: var(--text);
  background: var(--pane); box-shadow: var(--glass-inset), 0 4px 12px rgba(0, 0, 0, .16);
  touch-action: manipulation;
  transition: transform .35s var(--spring), background-color .15s, opacity .2s;
}
.dial-keys button:active { transform: scale(.86); background: var(--glass-hover); }
.dial-keys svg { width: 24px; height: 24px; }
.dial-keys .fn { color: var(--muted); }
.dial-keys .go { background: var(--marker); color: #141726; box-shadow: 0 6px 18px rgba(245, 205, 85, .3), inset 0 1px 0 rgba(255, 255, 255, .5); }
.dial-keys .go svg { stroke-width: 2.4; }
.dial-keys .go:disabled { opacity: .3; box-shadow: none; }
@keyframes dial-pop { from { transform: scale(.82); } }
@keyframes dial-shake { 20% { transform: translateX(-9px); } 40% { transform: translateX(8px); } 60% { transform: translateX(-5px); } 80% { transform: translateX(3px); } }

.headword { margin: 0 4px 30px; }
.headword-line { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.headword h1 { margin: 0; font: 400 clamp(36px, 6vw, 58px)/1.12 var(--serif); letter-spacing: -.015em; overflow-wrap: anywhere; }
.headword h1 span {
  --draw: 0; --h: 30%;
  background-image: linear-gradient(var(--marker-soft), var(--marker-soft));
  background-repeat: no-repeat; background-position: 0 90%;
  background-size: calc(var(--draw) * 100%) var(--h);
  animation: draw .8s var(--ease) .2s forwards;
  -webkit-box-decoration-break: clone; box-decoration-break: clone;
}
.pos-tag {
  font-size: 12px; color: var(--muted); padding: 3px 11px; border-radius: 999px;
  background: var(--glass-flat); box-shadow: var(--glass-inset); white-space: nowrap;
}
.meaning { margin: 14px 0 0; font-size: 19px; line-height: 1.7; }

.sentence-card { border-radius: 30px; padding: 24px 30px 26px; }
.card-head { display: flex; align-items: baseline; gap: 8px; margin-bottom: 6px; }
.card-num { font: italic 400 30px/1 var(--serif); color: var(--marker); }
.card-of { font: 12px var(--mono); color: var(--faint); }
.sentence-en { margin: 0; font: 400 clamp(21px, 3vw, 28px)/2.3 var(--serif); overflow-wrap: break-word; }
.sentence-ja { margin: 12px 0 0; color: var(--muted); font-size: 15px; line-height: 1.8; }

/* The highlighter: drawn left to right, one word after another */
.hl {
  --draw: 0; --h: 42%; --mk: var(--marker-soft);
  color: inherit; background-color: transparent;
  background-image: linear-gradient(var(--mk), var(--mk));
  background-repeat: no-repeat; background-position: 0 92%;
  background-size: calc(var(--draw) * 100%) var(--h);
  border-radius: 3px; cursor: pointer;
  animation: draw .55s var(--ease) forwards; animation-delay: var(--d, 0ms);
  transition: --h .35s var(--spring);
  -webkit-box-decoration-break: clone; box-decoration-break: clone;
}
.hl:hover, .hl.hover { --h: 86%; }
.hl.on { --h: 86%; --mk: var(--marker-strong); }
.hl ruby { ruby-position: over; white-space: nowrap; }
.hl rt {
  font: 10px/1 var(--mono); color: var(--marker); letter-spacing: .02em; user-select: none;
  opacity: 0; animation: pop .45s var(--spring) forwards; animation-delay: calc(var(--d, 0ms) + 260ms);
}
.static .hl { animation: none; --draw: 1; }
.static .hl rt { animation: none; opacity: .95; }

.section-title {
  margin: 36px 6px 12px; font: 12px var(--mono); color: var(--faint); letter-spacing: .06em;
  display: flex; gap: 8px; align-items: center;
}
.section-title::after { content: ""; flex: 1; height: 1px; background: var(--line); }

.word-list { display: grid; gap: 2px; padding: 6px; border-radius: 26px; }
.word-item {
  display: grid; grid-template-columns: 48px minmax(0, 1fr) auto; gap: 12px; align-items: baseline;
  text-align: left; padding: 12px 14px; border-radius: 20px;
  transition: background-color .2s, transform .35s var(--spring), box-shadow .2s;
}
.word-item:hover { background: var(--glass-flat); }
.word-item[aria-current="true"] { background: var(--glass-hover); box-shadow: var(--glass-inset), inset 3px 0 0 var(--marker); }
.word-item .n { font: 11.5px var(--mono); color: var(--faint); }
.word-item .w { font: 18px/1.35 var(--serif); }
.word-item .m { display: block; color: var(--muted); font: 13.5px/1.55 var(--sans); margin-top: 2px; }
.word-item .p { font-size: 11px; color: var(--faint); }

/* ===== Pronunciation & etymology ===== */
.ipa { margin: 10px 0 0; display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.ipa > span:first-child { font: 20px/1.4 "Charis SIL", "Doulos SIL", "Lucida Grande", "Segoe UI", var(--sans); letter-spacing: .01em; color: var(--text); }
.ipa-src { font: 11px var(--mono); color: var(--faint); }
.ety-card { margin-top: 18px; }
.ety-card .card-num { font-size: 24px; }
.ety-ja { margin: 4px 0 0; font-size: 16.5px; line-height: 1.85; }
.ety-parts { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; margin: 16px 0 0; }
.part { font: 17px var(--serif); padding: 3px 12px; border-radius: 999px; background: var(--marker-soft); }
.plus { color: var(--faint); }
.ety-chain { list-style: none; margin: 20px 0 0; padding: 0; display: flex; flex-wrap: wrap; align-items: stretch; gap: 6px; }
.ety-chain li {
  display: flex; flex-direction: column; gap: 1px; padding: 8px 12px; border-radius: 14px;
  background: var(--glass-flat); box-shadow: var(--glass-inset); min-width: 0;
}
.ety-chain li + li { position: relative; margin-left: 14px; }
.ety-chain li + li::before { content: "→"; position: absolute; left: -15px; top: 50%; transform: translateY(-50%); color: var(--faint); font-size: 12px; }
.ety-chain .lang { font-size: 11px; color: var(--faint); }
.ety-chain .form { font: 16px var(--serif); overflow-wrap: anywhere; }
.ety-chain .gloss { font-size: 12px; color: var(--muted); }
.ety-chain .now { background: var(--marker-soft); }
.ety-en { margin-top: 18px; }
.ety-en summary { cursor: pointer; font: 12px var(--mono); color: var(--muted); }
.ety-en p { font-size: 13.5px; line-height: 1.7; color: var(--muted); margin: 10px 0 0; white-space: pre-line; }
.ety-credit, .ety-note { font-size: 12px; color: var(--faint); margin: 12px 0 0; }
.ety-card a { color: inherit; text-decoration: underline; text-decoration-color: var(--marker-strong); text-underline-offset: 3px; }
.token-list { list-style: none; margin: 6px 0 0; padding: 0; display: grid; gap: 12px; }
.token-list li { display: grid; grid-template-columns: minmax(80px, auto) 1fr; gap: 2px 14px; align-items: baseline; }
.tok { font: 18px var(--serif); }
.tok-link { font: inherit; text-decoration: underline; text-decoration-color: var(--marker-strong); text-underline-offset: 3px; }
.tok-ipa { font-size: 13px; color: var(--muted); }
.tok-ety { grid-column: 1 / -1; font-size: 13px; line-height: 1.6; color: var(--faint); }

/* ===== Game & tech terms ===== */
.dom { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin: 7px 0 0 2px; }
.dom-game { background: var(--game); box-shadow: 0 0 8px var(--game); }
.dom-tech { background: var(--tech); box-shadow: 0 0 8px var(--tech); }

.qa {
  display: inline-flex; align-items: center; gap: 6px; white-space: nowrap;
  font-size: 11.5px; color: var(--muted); padding: 3px 10px 3px 8px; border-radius: 999px;
  background: var(--glass-flat); box-shadow: var(--glass-inset);
}
.qa::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--faint); }
.qa-ok::before { background: var(--ok); }
.qa-fix::before { background: var(--fix); }
.qa-open::before { background: var(--marker); }
.qa-line { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin: 16px 0 0; }
.qa-help { font-size: 12.5px; color: var(--faint); }
.word-item .p .qa { font-size: 10.5px; }

.usage-card .card-num { font-size: 26px; }
.term-detail .detail-top { min-height: 52px; }
.term-detail .headword { margin-top: 34px; }
.tab[data-tab="terms"] .tab-count { display: none; }
.usage-work { margin: 2px 0 14px; font-size: 14px; color: var(--muted); }
.usage-version { display: block; font-size: 12px; color: var(--faint); margin-top: 2px; }
.usage-note { margin: 0; font-size: 16.5px; line-height: 1.85; }
.usage-example { margin-top: 18px; }
.ex-label { display: block; font: 11.5px var(--mono); color: var(--faint); margin-bottom: 6px; letter-spacing: .03em; }
.usage-example pre {
  margin: 0; padding: 14px 16px; border-radius: 16px; overflow-x: auto;
  background: var(--well); box-shadow: inset 0 2px 6px rgba(0, 0, 0, .16);
  font: 14px/1.6 var(--mono); white-space: pre-wrap; word-break: break-word;
}
.ex-ja { margin: 8px 2px 0; color: var(--muted); font-size: 14px; }
.usage-where { margin: 18px 0 0; font-size: 12.5px; line-height: 1.7; color: var(--faint); overflow-wrap: anywhere; }
.usage-where span { font: 11px var(--mono); margin-right: 8px; padding: 1px 7px; border-radius: 6px; background: var(--glass-flat); color: var(--muted); }

.spoiler { position: relative; cursor: pointer; }
.spoiler-body { filter: blur(9px); transition: filter .4s var(--ease); user-select: none; }
.spoiler-cover {
  position: absolute; inset: 0; z-index: 1; display: grid; place-items: center; text-align: center;
  font-size: 13px; color: var(--text);
}
.spoiler.shown { cursor: auto; }
.spoiler.shown .spoiler-body { filter: none; user-select: auto; }
.spoiler.shown .spoiler-cover { display: none; }

.src-list { list-style: none; margin: 0; padding: 0 4px; display: grid; gap: 8px; }
.src-list li { font-size: 14px; line-height: 1.5; }
.src-list a { color: var(--text); text-decoration: underline; text-decoration-color: var(--marker-strong); text-underline-offset: 3px; overflow-wrap: anywhere; }
.src-list a:hover { text-decoration-color: var(--marker); }
.src-by { display: block; font-size: 12px; color: var(--faint); }

.home-keys { margin: 30px 6px 0; font: 12px var(--mono); color: var(--faint); }
.home-keys kbd { border: 1px solid var(--line); border-radius: 5px; padding: 1px 6px; margin: 0 2px; }

/* ===== Entrances ===== */
.detail .rail, .detail .headword, .detail .sentence-card, .detail .section-title, .detail .word-list { animation: rise .6s var(--ease) both; }
.detail .headword { animation-delay: .04s; }
.detail .sentence-card { animation-delay: .08s; }
.detail .section-title { animation-delay: .14s; }
.detail .word-list { animation-delay: .2s; }
.detail.dir-next .sentence-card { animation-name: from-right; }
.detail.dir-prev .sentence-card { animation-name: from-left; }
/* moving between words of the same sentence: only the headword changes */
.detail.same .rail, .detail.same .sentence-card, .detail.same .section-title, .detail.same .word-list { animation: none; }

@keyframes draw { to { --draw: 1; } }
@keyframes pop { from { opacity: 0; transform: translateY(4px) scale(.7); } to { opacity: .95; transform: none; } }
@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
@keyframes from-right { from { opacity: 0; transform: translateX(48px) scale(.985); } to { opacity: 1; transform: none; } }
@keyframes from-left { from { opacity: 0; transform: translateX(-48px) scale(.985); } to { opacity: 1; transform: none; } }

/* ===== Hide-Japanese study mode ===== */
.hide-ja .ja { filter: blur(7px); cursor: pointer; transition: filter .3s var(--ease); user-select: none; }
.hide-ja .ja.shown { filter: none; user-select: auto; }

/* ===== Mobile: floating glass over the light, like iOS ===== */
@media (max-width: 860px) {
  :root { --gap: 10px; --blob-opacity: .46; }
  :root[data-theme="light"] { --blob-opacity: .62; }
  .ambient i { filter: blur(64px); }
  .app { display: block; height: auto; }
  html, body { overflow: hidden; overscroll-behavior: none; }

  /* list screen: no slab behind it; the header stays put and blurs the list scrolling under it */
  .pane-list {
    position: fixed; inset: 0; display: block;
    margin: 0; border-radius: 0; overflow: hidden;
    background: none; -webkit-backdrop-filter: none; backdrop-filter: none; box-shadow: none;
    transition: transform .55s var(--ease), opacity .45s var(--ease);
  }
  .pane-list::before { display: none; }
  .list-head { position: absolute; top: 0; left: 0; right: 0; z-index: 4; isolation: isolate; padding-bottom: 4px; }
  .brand { align-items: center; gap: 12px; }
  .brand-sub { flex-direction: column; gap: 3px; line-height: 1.15; }
  .brand-sub span + span::before { content: none; }
  .list-head::before {
    content: ""; position: absolute; inset: 0 0 -34px; z-index: -1; pointer-events: none;
    background: linear-gradient(to bottom, color-mix(in srgb, var(--bg) 72%, transparent), color-mix(in srgb, var(--bg) 40%, transparent) 70%, transparent);
    -webkit-backdrop-filter: blur(18px) saturate(170%); backdrop-filter: blur(18px) saturate(170%);
    -webkit-mask-image: linear-gradient(to bottom, #000 calc(100% - 46px), transparent);
            mask-image: linear-gradient(to bottom, #000 calc(100% - 46px), transparent);
  }
  .masthead { padding: calc(12px + env(safe-area-inset-top)) 14px 6px 20px; }
  .brand-mark { font-size: 32px; }
  .icon-btn { width: 40px; height: 40px; background: var(--pane); box-shadow: var(--glass-inset), var(--pane-shadow); position: relative; }
  .search { margin: 6px 14px 10px; }
  .search input {
    height: 50px; border: 0;
    background: var(--pane); box-shadow: var(--glass-inset), var(--pane-shadow), inset 0 0 0 1px var(--glass-edge-b);
  }
  .search input:focus { box-shadow: var(--glass-inset), var(--pane-shadow), 0 0 0 2px var(--marker-strong), 0 0 0 6px var(--marker-soft); }
  .search-kbd { display: none; }
  .tabs { margin: 0 14px 10px; padding: 5px; background: var(--pane); box-shadow: var(--glass-inset), var(--pane-shadow); }
  .tabs::before { opacity: .5; }
  .tab-thumb { top: 5px; bottom: 5px; left: 5px; width: calc((100% - 10px) / var(--n, 2)); background: var(--thumb); box-shadow: var(--glass-inset), 0 6px 16px rgba(0, 0, 0, .22); }
  :root[data-theme="light"] .tab-thumb { box-shadow: 0 4px 14px rgba(40, 52, 100, .16); }
  .tab { padding: 9px 6px; font-size: 13.5px; }
  .pos-filter { padding: 2px 14px 12px; }
  .chip { padding: 7px 14px; font-size: 13px; background: var(--pane); box-shadow: var(--glass-inset), 0 4px 12px rgba(0, 0, 0, .14); }

  /* rows become floating glass cards */
  .results {
    position: absolute; inset: 0;
    display: flex; flex-direction: column; gap: 8px;
    overflow-y: auto; -webkit-overflow-scrolling: touch; overscroll-behavior-y: contain;
    border-top: 0; padding: calc(var(--head-h, 240px) + 8px) 14px calc(30px + env(safe-area-inset-bottom));
    scroll-padding-top: var(--head-h, 240px);
  }
  .results > * { flex: none; }
  .row {
    position: relative; padding: 13px 16px; border-radius: 22px;
    background: var(--pane); box-shadow: var(--glass-inset), var(--pane-shadow);
  }
  .row::before {
    content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px; pointer-events: none;
    background: linear-gradient(140deg, var(--glass-edge-a), var(--glass-edge-b) 30%, var(--glass-edge-b) 70%, var(--glass-edge-a));
    -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask-composite: xor; mask-composite: exclude;
    opacity: .45;
  }
  .row:hover { background: var(--pane); }
  .row:active { transform: scale(.97); }
  .row[aria-current="true"] { box-shadow: var(--glass-inset), var(--pane-shadow), inset 3px 0 0 var(--marker); }
  .row-word { font-size: 19px; }
  .more { padding: 10px 20px; background: var(--pane); }

  /* detail screen: a clear layer — the cards themselves are the glass */
  .pane-detail {
    position: fixed; inset: 0; z-index: 10;
    background: transparent;
    overscroll-behavior: contain; -webkit-overflow-scrolling: touch;
    transform: translateX(100%); visibility: hidden; pointer-events: none;
    transition: transform .55s var(--ease), visibility 0s .55s;
  }
  .show-detail .pane-detail { transform: none; visibility: visible; pointer-events: auto; transition: transform .55s var(--ease); }
  .show-detail .pane-list { transform: translateX(-24%); opacity: 0; visibility: hidden; transition: transform .55s var(--ease), opacity .4s var(--ease), visibility 0s .55s; }

  .detail { padding: calc(var(--gap) + env(safe-area-inset-top)) 14px calc(118px + env(safe-area-inset-bottom)); touch-action: pan-y; }
  /* top: two glass circles — back, and a magnifier that stretches into a search */
  .detail-top {
    top: calc(var(--gap) + env(safe-area-inset-top));
    height: 46px; padding: 0;
    background: none; -webkit-backdrop-filter: none; backdrop-filter: none; box-shadow: none;
  }
  .detail-top::before { display: none; }
  .detail-top.seeking { z-index: 8; } /* results lie over the dock */
  .detail-top .eyebrow, .detail-top .spacer, .detail-top [data-go], .detail-top [data-shuffle] { display: none; }
  .nav-btn.back { display: grid; }
  .detail-top .nav-btn.back, .seek {
    position: relative;
    background: var(--glass); background-color: color-mix(in srgb, var(--bg) 30%, transparent);
    -webkit-backdrop-filter: blur(24px) saturate(185%); backdrop-filter: blur(24px) saturate(185%);
    box-shadow: var(--glass-inset), var(--glass-shadow);
  }
  .detail-top .nav-btn.back { width: 46px; height: 46px; color: var(--text); }
  .detail-top .nav-btn.back::before, .seek::before {
    content: ""; position: absolute; inset: 0; z-index: 3; border-radius: inherit; padding: 1px; pointer-events: none;
    background: linear-gradient(140deg, var(--glass-edge-a), var(--glass-edge-b) 32%, var(--glass-edge-b) 68%, var(--glass-edge-a));
    -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask-composite: xor; mask-composite: exclude;
    opacity: .75;
  }
  .seek {
    display: block; position: absolute; top: 0; left: 56px; z-index: 2;
    width: 46px; border-radius: 23px; overflow: hidden;
    transition: width .62s cubic-bezier(.3, 1.28, .45, 1), border-radius .45s var(--ease), background-color .35s var(--ease);
  }
  .seek.open { width: calc(100% - 56px); }
  .seek.has-results { border-radius: 26px; background-color: color-mix(in srgb, var(--bg) 66%, transparent); }
  .seek-bar { display: flex; align-items: center; height: 46px; }
  .seek-btn { flex: none; width: 46px; height: 46px; display: grid; place-items: center; color: var(--text); transition: color .3s, transform .35s var(--spring); }
  .seek-btn:active { transform: scale(.88); }
  .seek.open .seek-btn { color: var(--marker); }
  .seek-input {
    flex: 1; min-width: 0; height: 46px; padding: 0; border: 0; outline: none;
    background: none; color: var(--text); font: 16px var(--sans);
    -webkit-appearance: none; appearance: none;
    opacity: 0; pointer-events: none; transition: opacity .25s var(--ease) .12s;
  }
  .seek-input::placeholder { color: var(--faint); }
  .seek-input::-webkit-search-cancel-button { -webkit-appearance: none; }
  .seek-close { flex: none; width: 44px; height: 46px; display: grid; place-items: center; color: var(--muted); opacity: 0; pointer-events: none; transition: opacity .2s var(--ease); }
  .seek.open .seek-input, .seek.open .seek-close { opacity: 1; pointer-events: auto; }
  .seek-panel { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .6s var(--spring); }
  .seek.has-results .seek-panel { grid-template-rows: 1fr; }
  .seek-list {
    min-height: 0; max-height: var(--seek-max, 60vh); overflow-y: auto; overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
  }
  .seek.has-results .seek-list { border-top: 1px solid var(--line); padding: 4px 6px 8px; }
  .seek-row {
    display: grid; grid-template-columns: 52px minmax(0, 1fr); gap: 1px 6px;
    width: 100%; text-align: left; padding: 11px 10px 11px 0; border-radius: 16px;
    transition: background-color .15s;
  }
  .seek.has-results .seek-row { animation: rise .45s var(--ease) both; animation-delay: calc(var(--i, 12) * 22ms); }
  .seek-row + .seek-row { box-shadow: 0 -1px 0 var(--line); }
  .seek-row:active { background: var(--glass-hover); box-shadow: none; }
  .seek-num { grid-row: span 2; text-align: right; font: italic 15px/1.5 var(--serif); color: var(--faint); }
  .seek-row[aria-current="true"] .seek-num { color: var(--marker); }
  .seek-en { font: 16px/1.45 var(--serif); }
  .seek-ja { font-size: 12.5px; line-height: 1.5; color: var(--muted); }
  .seek mark.q { background: var(--marker-soft); color: inherit; border-radius: 4px; }
  .seek-note { margin: 0; padding: 14px 12px; text-align: center; font-size: 13px; color: var(--muted); }
  .rail { height: 44px; margin: 24px 4px 26px; }
  .rail-label { top: -12px; }
  .headword { margin: 0 6px 24px; }
  .sentence-card { padding: 22px 20px 24px; border-radius: 28px; }
  .card-num { font-size: 26px; }
  .word-list { padding: 4px; }
  .word-item { grid-template-columns: 40px minmax(0, 1fr) auto; padding: 12px 12px; }
  .term-links .word-item { grid-template-columns: 24px minmax(0, 1fr); }
  .term-links .word-item .p { grid-column: 2; }

  /* bottom dock: previous · number · next, within thumb reach */
  .dock {
    position: fixed; z-index: 6; left: 50%; bottom: calc(14px + env(safe-area-inset-bottom));
    transform: translateX(-50%);
    display: flex; align-items: center; gap: 2px; padding: 6px;
    border-radius: 999px;
    background: var(--glass); background-color: color-mix(in srgb, var(--bg) 30%, transparent);
    -webkit-backdrop-filter: blur(24px) saturate(185%); backdrop-filter: blur(24px) saturate(185%);
    box-shadow: var(--glass-inset), var(--glass-shadow);
  }
  .dock::before {
    content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px; pointer-events: none;
    background: linear-gradient(140deg, var(--glass-edge-a), var(--glass-edge-b) 32%, var(--glass-edge-b) 68%, var(--glass-edge-a));
    -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask-composite: xor; mask-composite: exclude;
    opacity: .8;
  }
  .dock .nav-btn { width: 48px; height: 48px; background: transparent; box-shadow: none; color: var(--text); }
  .dock .nav-btn:active:not(:disabled) { background: var(--glass-hover); transform: scale(.9); }
  .dock-num {
    min-width: 104px; text-align: center;
    font: italic 400 22px/1 var(--serif); color: var(--marker);
    animation: pop .5s var(--spring) both;
  }
  .detail.same .dock-num { animation: none; }
  .dock-num small { font: normal 11px var(--mono); color: var(--faint); margin-left: 5px; }
}

/* iPhone home-screen app: iOS reports the screen a little short (see index.html),
   so every full-screen layer is sized to the real screen height instead of "top to bottom" */
html.ios-app, html.ios-app body { height: var(--screen-h, 100vh); }
html.ios-app .ambient, html.ios-app .pane-list, html.ios-app .pane-detail, html.ios-app .dial,
html.ios-app .importer, html.ios-app .data-sheet { bottom: auto; height: var(--screen-h, 100vh); }
html.ios-app .dock { bottom: auto; top: calc(var(--screen-h, 100vh) - 74px - env(safe-area-inset-bottom)); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .hl, .headword h1 span, .brand-mark { --draw: 1; }
  .hl rt { opacity: .95; }
}