:root {
  --canvas: #F2F2F0;
  --canvas-2: #E7E7E2;
  --paper: #FCFCFA;
  --ink: #171716;
  --ink-2: #262624;
  --muted: #666660;
  --hairline: rgba(23, 23, 22, .08);
  --hairline-strong: rgba(23, 23, 22, .13);
  --sage: #1F4D3F;
  --sage-soft: #DCE8E2;
  --coral: #B55C4A;
  --amber: #9C7428;
  --sunken: #E0E0DA;
  --shell-radius: 2.35rem;
  --core-radius: calc(var(--shell-radius) - .42rem);
  --soft-shadow: 0 24px 54px -34px rgba(23, 23, 22, .3), 0 10px 24px -18px rgba(23, 23, 22, .12);
  --ease: cubic-bezier(.32, .72, 0, 1);
  --spring: cubic-bezier(.16, 1.16, .3, 1);
  --sans: "Plus Jakarta Sans", "Aptos", "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Noto Sans SC", sans-serif;
  --mono: "JetBrains Mono", "Cascadia Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  min-height: 100dvh;
  color: var(--ink);
  background: var(--canvas);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: -.006em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
button, input, textarea, select { font: inherit; }
button { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 3px solid rgba(31, 77, 63, .24);
  outline-offset: 3px;
}
[hidden] { display: none !important; }

.mesh { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }
.mesh::before, .mesh::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: .14;
  will-change: transform;
}
.mesh::before {
  width: 720px; height: 720px; top: -280px; left: -240px;
  background: radial-gradient(circle at 50% 50%, #5A8C7A, transparent 67%);
  animation: drift-a 30s var(--ease) infinite alternate;
}
.mesh::after {
  width: 620px; height: 620px; right: -260px; top: 280px;
  background: radial-gradient(circle at 50% 50%, #C9B79A, transparent 68%);
  animation: drift-b 38s var(--ease) infinite alternate;
}
@keyframes drift-a { to { transform: translate3d(90px, 70px, 0) scale(1.06); } }
@keyframes drift-b { to { transform: translate3d(-80px, -50px, 0) scale(.94); } }

.nav-shell {
  position: sticky;
  top: max(16px, env(safe-area-inset-top));
  z-index: 50;
  width: max-content;
  max-width: calc(100% - 32px);
  margin: 18px auto 0;
  padding: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .48);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .7), 0 0 0 1px var(--hairline), 0 16px 42px -22px rgba(23, 23, 22, .24);
  backdrop-filter: saturate(155%) blur(22px);
  -webkit-backdrop-filter: saturate(155%) blur(22px);
}
.nav { display: flex; align-items: center; gap: 12px; padding: 5px 6px 5px 16px; border-radius: 999px; background: rgba(255, 255, 255, .48); }
.brand { display: inline-flex; align-items: center; gap: 9px; border: 0; background: transparent; padding: 8px 4px; font-weight: 750; letter-spacing: -.025em; cursor: pointer; }
.brand-mark { width: 21px; height: 21px; border-radius: 8px; background: linear-gradient(135deg, var(--sage), #78A896); box-shadow: inset 0 1px 0 rgba(255, 255, 255, .34), 0 5px 12px -7px rgba(31, 77, 63, .8); }
.nav-links { display: flex; align-items: center; gap: 2px; }
.nav-links button, .mobile-nav button { border: 0; background: transparent; cursor: pointer; transition: transform 500ms var(--ease), background 500ms var(--ease); }
.nav-links button { padding: 9px 13px; border-radius: 999px; color: var(--muted); font-size: 13px; font-weight: 600; }
.nav-links button:hover, .nav-links button.active { color: var(--ink); background: rgba(23, 23, 22, .055); }

.pill, .ghost, .text-button, .icon-button, .chip, .rating {
  border: 0;
  cursor: pointer;
  transition: transform 650ms var(--ease), opacity 650ms var(--ease), background 650ms var(--ease);
}
.pill {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 7px 7px 7px 17px; border-radius: 999px;
  color: #FBFBF8; background: var(--ink);
  font-size: 13.5px; font-weight: 700;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .13), 0 10px 24px -18px rgba(23, 23, 22, .8);
}
.pill.compact { padding-left: 15px; }
.pill .icon-wrap { width: 28px; height: 28px; border-radius: 999px; background: rgba(255, 255, 255, .13); display: inline-flex; align-items: center; justify-content: center; transition: transform 650ms var(--spring), background 650ms var(--ease); }
.pill svg, .ghost svg { width: 13px; height: 13px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.pill:hover .icon-wrap { transform: translate(2px, -1px) scale(1.06); background: rgba(255, 255, 255, .22); }
.pill:active, .ghost:active, .chip:active, .rating:active { transform: scale(.98); }
.pill.light { color: var(--ink); background: var(--canvas); }
.pill.light .icon-wrap { background: rgba(23, 23, 22, .09); }
.ghost {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 17px; border-radius: 999px;
  color: var(--ink); background: rgba(255, 255, 255, .52);
  box-shadow: inset 0 0 0 1px var(--hairline-strong);
  font-size: 13.5px; font-weight: 650;
}
.ghost:hover { background: rgba(255, 255, 255, .88); }
.ghost.danger { color: #8C3D30; }
.text-button { padding: 4px 0; color: var(--sage); background: transparent; font-size: 13px; font-weight: 700; }
.icon-button { width: 40px; height: 40px; border-radius: 999px; background: rgba(23, 23, 22, .06); font-size: 24px; line-height: 1; }

.app-main { position: relative; z-index: 1; }
.view { display: none; max-width: 1240px; margin: 0 auto; padding: 46px 28px 130px; }
.view.active { display: block; animation: view-in 700ms var(--ease) both; }
@keyframes view-in { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
.hero { min-height: calc(100dvh - 96px); display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 56px; padding: 48px 0 88px; }
.hero-copy h1, .page-heading h1 {
  margin: 20px 0 24px;
  font-size: clamp(48px, 7vw, 92px);
  font-weight: 800;
  line-height: .96;
  letter-spacing: -.045em;
}
.hero-copy h1 { max-width: 14ch; }
.hero-copy h1 .soft { color: var(--muted); font-weight: 560; }
.page-heading h1 { font-size: clamp(44px, 6vw, 76px); max-width: 13ch; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 11px; border-radius: 999px;
  color: var(--muted); background: rgba(255, 255, 255, .58);
  box-shadow: inset 0 0 0 1px var(--hairline);
  font-family: var(--mono); font-size: 10px; letter-spacing: .2em; text-transform: uppercase;
}
.eyebrow.invert { color: rgba(255, 255, 255, .72); background: rgba(255, 255, 255, .08); box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .12); }
.dot { width: 6px; height: 6px; border-radius: 50%; background: var(--sage); box-shadow: 0 0 0 4px rgba(31, 77, 63, .13); }
.lede { max-width: 54ch; margin: 0; color: var(--muted); font-size: 17px; line-height: 1.62; }
.actions, .button-row { display: flex; align-items: center; gap: 11px; flex-wrap: wrap; }
.actions { margin-top: 32px; }

.double-bezel {
  padding: 8px;
  border-radius: var(--shell-radius);
  background: rgba(255, 255, 255, .48);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .72), 0 0 0 1px var(--hairline), var(--soft-shadow);
}
.double-bezel > .core {
  height: 100%;
  padding: 30px;
  border-radius: var(--core-radius);
  background: var(--paper);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .9), inset 0 0 0 1px var(--hairline);
}
.double-bezel.hero-preview { align-self: center; }
.hero-preview .core { padding: 26px; background: linear-gradient(180deg, #FCFCFA, #EEEEE9); }
.preview-topline, .card-topline, .review-progress-row { display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.mono-label { font-family: var(--mono); font-size: 10px; font-weight: 500; letter-spacing: .18em; text-transform: uppercase; color: var(--muted); }
.status-dot { display: inline-flex; align-items: center; gap: 7px; color: var(--muted); font-size: 11px; }
.status-dot i { width: 7px; height: 7px; border-radius: 50%; background: var(--sage); box-shadow: 0 0 0 4px rgba(31, 77, 63, .12); }
.due-number { display: flex; align-items: baseline; gap: 9px; margin: 42px 0 24px; }
.due-number span { font-size: clamp(72px, 10vw, 124px); font-weight: 800; line-height: .82; letter-spacing: -.07em; }
.due-number small { color: var(--muted); font-size: 14px; }
.progress-track { height: 8px; overflow: hidden; border-radius: 999px; background: rgba(23, 23, 22, .08); }
.progress-track span { display: block; width: 0; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--sage), #79A797); transition: transform 800ms var(--ease), opacity 800ms var(--ease); transform-origin: left; }
.progress-track.large { height: 10px; margin: 14px 0 22px; }
.preview-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 18px; }
.mini-cell { padding: 14px; border-radius: 18px; background: rgba(255, 255, 255, .64); box-shadow: inset 0 0 0 1px var(--hairline); }
.mini-cell.wide { grid-column: span 2; }
.mini-cell span { display: block; margin-bottom: 6px; color: var(--muted); font-size: 11px; }
.mini-cell strong { display: block; font-size: 16px; letter-spacing: -.02em; }

.section { padding: 108px 0 0; }
.section-heading { display: grid; grid-template-columns: 1fr 1fr; align-items: end; gap: 42px; margin-bottom: 42px; }
.section-heading h2, .settings-card h2, .privacy-note h2 { margin: 15px 0 0; font-size: clamp(34px, 4.5vw, 58px); line-height: 1.02; letter-spacing: -.04em; }
.section-heading p { max-width: 48ch; margin: 0; color: var(--muted); }
.dashboard-grid, .settings-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.dashboard-grid .span-2, .settings-grid > * { grid-column: span 2; }
.dashboard-grid .double-bezel:not(.span-2), .settings-grid > *:last-child { grid-column: span 3; }
.queue-list { display: grid; gap: 10px; margin-top: 22px; }
.queue-item { display: grid; grid-template-columns: auto 1fr auto; gap: 13px; align-items: center; padding: 14px; border-radius: 18px; background: #F1F1ED; }
.queue-index { width: 31px; height: 31px; display: grid; place-items: center; border-radius: 12px; color: var(--sage); background: var(--sage-soft); font-family: var(--mono); font-size: 10px; }
.queue-item p { display: -webkit-box; margin: 0; overflow: hidden; font-size: 13.5px; font-weight: 620; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.queue-item small { color: var(--muted); font-size: 10.5px; white-space: nowrap; }
.quick-empty { padding: 28px; border-radius: 18px; color: var(--muted); background: #F1F1ED; text-align: center; }
.metric-core { display: flex; flex-direction: column; }
.metric-core > strong { margin-top: 28px; font-size: 78px; line-height: .85; letter-spacing: -.07em; }
.metric-core > p { margin: 12px 0 28px; color: var(--muted); }
.metric-row { display: flex; align-items: baseline; justify-content: space-between; padding: 13px 0; border-top: 1px solid var(--hairline); }
.metric-row span { font-size: 20px; font-weight: 750; }
.metric-row small { color: var(--muted); }

.bento { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.bento .span-2 { grid-column: span 2; }
.bento .tall { min-height: 320px; }
.bento h3 { margin: 18px 0 10px; font-size: 25px; line-height: 1.08; letter-spacing: -.03em; }
.bento p { margin: 0; color: var(--muted); font-size: 14px; }
.double-bezel.dark > .core { color: #F4F4F0; background: linear-gradient(180deg, #222220, #151514); }
.double-bezel.dark .mono-label, .double-bezel.dark p { color: rgba(244, 244, 240, .58); }
.weekly-chart { min-height: 190px; display: grid; grid-template-columns: repeat(7, 1fr); gap: 10px; align-items: end; margin-top: 36px; }
.chart-day { display: grid; gap: 9px; align-items: end; text-align: center; }
.chart-bar { min-height: 8px; border-radius: 999px; background: linear-gradient(180deg, #76A18E, var(--sage)); transition: transform 900ms var(--spring); transform-origin: bottom; }
.chart-day span { color: var(--muted); font-family: var(--mono); font-size: 10px; }
.reason-breakdown { display: grid; gap: 15px; margin-top: 34px; }
.reason-row { display: grid; grid-template-columns: 82px 1fr 28px; align-items: center; gap: 12px; }
.reason-row span, .reason-row strong { font-size: 12px; }
.reason-row strong { text-align: right; }
.reason-bar { height: 8px; overflow: hidden; border-radius: 999px; background: rgba(255, 255, 255, .12); }
.reason-bar i { display: block; height: 100%; border-radius: inherit; background: #86B7A1; }
.empty-mini { color: var(--muted); font-size: 13px; }

.feature-marquee { max-width: 1184px; margin: 100px auto 0; padding: 22px 0; overflow: hidden; mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); }
.marquee-track { display: flex; width: max-content; animation: marquee-track 32s linear infinite; will-change: transform; }
.feature-marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-item { color: var(--muted); font-size: clamp(18px, 2.4vw, 28px); font-weight: 750; letter-spacing: -.03em; white-space: nowrap; }
.marquee-item em { margin: 0 15px; color: var(--sage); font-style: normal; }
@keyframes marquee-track { from { transform: translateX(0); } to { transform: translateX(-50%); } }

.closing { position: relative; overflow: hidden; margin: 112px 28px 0; padding: 104px 24px; border-radius: 40px; color: #F5F5F1; background: linear-gradient(145deg, #1E1E1C, #111110); box-shadow: 0 36px 90px -50px rgba(23, 23, 22, .8); }
.closing::before { content: ""; position: absolute; inset: 0; pointer-events: none; background: radial-gradient(680px 340px at 30% 0%, rgba(90, 140, 122, .3), transparent 70%); }
.closing-inner { position: relative; max-width: 900px; margin: 0 auto; text-align: center; }
.closing h2 { margin: 22px auto 18px; max-width: 16ch; font-size: clamp(40px, 5.7vw, 76px); line-height: .98; letter-spacing: -.045em; }
.closing p { max-width: 48ch; margin: 0 auto 30px; color: rgba(245, 245, 241, .62); }

.page-heading { display: flex; align-items: end; justify-content: space-between; gap: 32px; margin: 38px 0 52px; }
.page-heading .lede { margin-top: 0; }
.library-tools { display: grid; grid-template-columns: minmax(220px, 1fr) 170px 170px; gap: 10px; margin-bottom: 22px; }
.search-field, select, .field input, .field textarea {
  width: 100%; border: 0; color: var(--ink); background: rgba(255, 255, 255, .64); box-shadow: inset 0 0 0 1px var(--hairline-strong); border-radius: 17px;
}
.search-field { display: flex; align-items: center; gap: 9px; padding: 0 15px; }
.search-field svg { width: 18px; height: 18px; fill: none; stroke: var(--muted); stroke-width: 1.6; }
.search-field input { flex: 1; min-width: 0; padding: 13px 0; border: 0; outline: 0; background: transparent; }
select { padding: 13px 38px 13px 14px; appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%); background-position: calc(100% - 17px) 18px, calc(100% - 12px) 18px; background-size: 5px 5px; background-repeat: no-repeat; }
.library-list { display: grid; gap: 14px; }
.question-card { display: grid; grid-template-columns: 1fr auto; gap: 20px; align-items: start; }
.question-card .core { padding: 25px 26px; }
.question-card-top { display: flex; justify-content: space-between; gap: 16px; margin-bottom: 14px; }
.question-card h3 { margin: 0 0 10px; font-size: 18px; line-height: 1.4; letter-spacing: -.02em; }
.question-card p { margin: 0; color: var(--muted); font-size: 13px; }
.tag-row { display: flex; gap: 7px; flex-wrap: wrap; margin-top: 16px; }
.tag { padding: 5px 9px; border-radius: 999px; color: var(--muted); background: #EEEEEA; font-size: 10px; font-weight: 650; }
.tag.status-learning { color: #83513F; background: #F3E4DE; }
.tag.status-reviewing { color: #765A25; background: #F2E9D6; }
.tag.status-mastered { color: #315D50; background: var(--sage-soft); }
.card-actions { display: flex; gap: 6px; align-items: center; }
.small-button { border: 0; padding: 8px 10px; border-radius: 999px; color: var(--muted); background: rgba(23, 23, 22, .055); cursor: pointer; font-size: 11px; font-weight: 650; }
.small-button.danger { color: #8C3D30; }
.empty-state { display: grid; place-items: center; min-height: 340px; padding: 54px 28px; text-align: center; }
.empty-state h2 { margin: 18px 0 8px; font-size: clamp(30px, 4vw, 48px); letter-spacing: -.04em; }
.empty-state p { max-width: 46ch; margin: 0 0 24px; color: var(--muted); }
.empty-mark { display: grid; place-items: center; min-width: 64px; height: 64px; padding: 0 15px; border-radius: 22px; color: var(--sage); background: var(--sage-soft); font-family: var(--mono); font-size: 12px; text-transform: uppercase; }

.review-shell { max-width: 860px; margin: 0 auto; }
.review-card-wrap { width: 100%; }
.review-progress-row { color: var(--muted); font-family: var(--mono); font-size: 10px; letter-spacing: .12em; text-transform: uppercase; }
.review-card .core { min-height: 460px; padding: clamp(26px, 5vw, 54px); }
.review-meta { display: flex; justify-content: space-between; gap: 16px; color: var(--muted); font-size: 11px; }
.review-card h2 { margin: 60px 0 46px; font-size: clamp(30px, 4.5vw, 52px); line-height: 1.22; letter-spacing: -.035em; }
.review-reveal { margin-top: 10px; }
.review-answer { margin-top: 30px; }
.answer-block { padding: 22px 0; border-top: 1px solid var(--hairline); }
.answer-block span { display: block; margin-bottom: 8px; color: var(--muted); font-family: var(--mono); font-size: 10px; letter-spacing: .14em; text-transform: uppercase; }
.answer-block strong { font-size: 22px; line-height: 1.35; }
.answer-block p { margin: 0; color: var(--ink-2); }
.answer-block.correct strong { color: var(--sage); }
.answer-note { margin: -18px 0 34px; padding: 16px 18px; border-radius: 17px; color: #83513F; background: #F3E4DE; font-size: 14px; }
.rating-actions { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 30px; }
.rating { display: grid; gap: 4px; padding: 16px 12px; border-radius: 18px; background: #EFEFEB; text-align: left; }
.rating strong { font-size: 13px; }
.rating small { color: var(--muted); font-size: 10px; }
.rating.again:hover { background: #F1DFDA; }
.rating.fuzzy:hover { background: #F1E7D3; }
.rating.good:hover { background: var(--sage-soft); }

.settings-grid { grid-template-columns: 1fr 1fr; }
.settings-grid > * { grid-column: auto; }
.settings-card { min-height: 370px; }
.settings-card p, .privacy-note p { max-width: 55ch; color: var(--muted); }
.switch-row { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin: 30px 0 18px; padding: 17px 0; border-top: 1px solid var(--hairline); border-bottom: 1px solid var(--hairline); font-weight: 650; }
.switch-row input { position: absolute; opacity: 0; pointer-events: none; }
.switch-row i { position: relative; width: 48px; height: 28px; border-radius: 999px; background: #D7D7D1; transition: background 500ms var(--ease); }
.switch-row i::after { content: ""; position: absolute; top: 4px; left: 4px; width: 20px; height: 20px; border-radius: 50%; background: white; box-shadow: 0 3px 8px rgba(23, 23, 22, .18); transition: transform 500ms var(--spring); }
.switch-row input:checked + i { background: var(--sage); }
.switch-row input:checked + i::after { transform: translateX(20px); }
.compact-field { max-width: 230px; }
.button-row { margin-top: 24px; }
.privacy-note { margin-top: 14px; }
.privacy-note .core { padding: 42px; }

.field { display: grid; gap: 8px; margin-bottom: 18px; }
.field > span, fieldset legend { color: var(--muted); font-size: 12px; font-weight: 650; }
.field textarea, .field input { padding: 14px 15px; resize: vertical; outline: 0; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.choice-field { margin: 4px 0 22px; padding: 0; border: 0; }
.chip-row { display: flex; gap: 7px; flex-wrap: wrap; margin-top: 10px; }
.chip { padding: 8px 12px; border-radius: 999px; color: var(--muted); background: #EEEEEA; font-size: 12px; font-weight: 650; }
.chip.selected { color: white; background: var(--sage); }

.modal { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; padding: 18px; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(23, 23, 22, .42); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }
.modal-panel { position: relative; width: min(720px, 100%); max-height: min(88dvh, 920px); overflow: auto; padding: 26px; border-radius: 32px; background: #F6F6F2; box-shadow: 0 40px 100px -46px rgba(23, 23, 22, .75); animation: modal-in 550ms var(--spring) both; }
@keyframes modal-in { from { opacity: 0; transform: translateY(18px) scale(.98); } to { opacity: 1; transform: none; } }
.modal-head { display: flex; align-items: start; justify-content: space-between; gap: 20px; margin-bottom: 24px; }
.modal-head h2, .confirm-panel h2 { margin: 8px 0 0; font-size: 30px; letter-spacing: -.035em; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 28px; }
.confirm-panel { width: min(480px, 100%); }
.confirm-panel > p { color: var(--muted); }
.toast { position: fixed; z-index: 120; right: 22px; bottom: 24px; max-width: min(390px, calc(100% - 44px)); padding: 14px 17px; border-radius: 17px; color: white; background: #252523; box-shadow: 0 24px 50px -28px rgba(23, 23, 22, .8); animation: toast-in 550ms var(--spring) both; }
@keyframes toast-in { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }

.site-footer {
  display: flex; justify-content: space-between; gap: 18px; max-width: 1184px; margin: 46px auto 0; padding: 28px 28px 38px;
  border-top: 1px solid var(--hairline); color: var(--muted); font-family: var(--mono); font-size: 10px; letter-spacing: .09em; text-transform: uppercase;
}

.mobile-nav { display: none; }
.reveal { opacity: 0; transform: translateY(16px); filter: blur(7px); transition: opacity 800ms var(--ease), transform 800ms var(--ease), filter 800ms var(--ease); }
.reveal.is-in { opacity: 1; transform: none; filter: none; }
.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; }

@media (max-width: 980px) {
  .nav-links { display: none; }
  .hero { grid-template-columns: 1fr; min-height: auto; gap: 34px; padding-top: 34px; }
  .section { padding-top: 88px; }
  .section-heading { grid-template-columns: 1fr; gap: 18px; }
  .dashboard-grid, .bento, .settings-grid { grid-template-columns: 1fr; }
  .dashboard-grid > *, .bento .span-2, .settings-grid > * { grid-column: span 1; }
  .feature-marquee { max-width: 1184px; margin: 100px auto 0; padding: 22px 0; overflow: hidden; mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); }
.marquee-track { display: flex; width: max-content; animation: marquee-track 32s linear infinite; will-change: transform; }
.feature-marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-item { color: var(--muted); font-size: clamp(18px, 2.4vw, 28px); font-weight: 750; letter-spacing: -.03em; white-space: nowrap; }
.marquee-item em { margin: 0 15px; color: var(--sage); font-style: normal; }
@keyframes marquee-track { from { transform: translateX(0); } to { transform: translateX(-50%); } }

.closing { margin-inline: 14px; }
}

@media (max-width: 768px) {
  body { padding-bottom: calc(92px + env(safe-area-inset-bottom)); }
  .nav-shell { width: calc(100% - 24px); max-width: calc(100% - 24px); top: max(10px, env(safe-area-inset-top)); margin-top: 10px; }
  .nav { justify-content: space-between; padding-left: 12px; }
  .nav .pill.compact { padding-left: 12px; }
  .nav .pill.compact > span:first-child { display: none; }
  .view { padding: 28px 16px 42px; }
  .hero { padding-top: 24px; padding-bottom: 62px; }
  .hero-copy h1, .page-heading h1 { font-size: clamp(44px, 14vw, 66px); }
  .page-heading { display: grid; align-items: start; margin-top: 18px; margin-bottom: 36px; }
  .page-heading .pill { width: max-content; }
  .double-bezel { border-radius: 29px; }
  .double-bezel > .core, .hero-preview .core { padding: 22px; border-radius: calc(29px - .42rem); }
  .dashboard-grid, .bento, .settings-grid { gap: 12px; }
  .bento .tall { min-height: 280px; }
  .library-tools { grid-template-columns: 1fr 1fr; }
  .search-field { grid-column: span 2; }
  .question-card { grid-template-columns: 1fr; gap: 8px; }
  .question-card .core { padding: 22px; }
  .card-actions { padding: 0 10px 8px; }
  .review-card .core { min-height: 440px; }
  .review-card h2 { margin: 50px 0 38px; }
  .rating-actions { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; gap: 0; }
  .modal { align-items: end; padding: 0; }
  .modal-panel { width: 100%; max-height: 94dvh; padding: 22px 18px calc(24px + env(safe-area-inset-bottom)); border-radius: 30px 30px 0 0; }
  .modal-actions .pill { flex: 1; }
  .mobile-nav {
    position: fixed; z-index: 60; left: 12px; right: 12px; bottom: max(12px, env(safe-area-inset-bottom)); height: 68px;
    display: grid; grid-template-columns: repeat(5, 1fr); align-items: center;
    padding: 6px; border-radius: 26px; background: rgba(252, 252, 250, .8);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, .8), 0 0 0 1px var(--hairline), 0 20px 44px -25px rgba(23, 23, 22, .45);
    backdrop-filter: blur(22px) saturate(150%); -webkit-backdrop-filter: blur(22px) saturate(150%);
  }
  .mobile-nav button { height: 54px; border-radius: 20px; color: var(--muted); font-size: 10px; font-weight: 700; }
  .mobile-nav button.active { color: var(--ink); background: rgba(23, 23, 22, .055); }
  .mobile-nav .mobile-add { display: grid; place-items: center; width: 52px; height: 52px; margin: 0 auto; border-radius: 18px; color: white; background: var(--ink); font-size: 26px; }
  .toast { right: 14px; bottom: calc(88px + env(safe-area-inset-bottom)); }
}

@media (max-width: 480px) {
  .actions, .button-row.vertical-mobile { display: grid; grid-template-columns: 1fr; }
  .actions .pill, .actions .ghost, .button-row .ghost { width: 100%; }
  .preview-grid { grid-template-columns: 1fr; }
  .mini-cell.wide { grid-column: span 1; }
  .metric-core > strong { font-size: 66px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; filter: none; }
}