/* ──────────────────────────────────────────────────────────────────
   kidavo.org · Editorial Calm
   Design tokens + layout + components
   ────────────────────────────────────────────────────────────────── */

:root {
  /* ── Colors ─────────────────────────────────────────────── */
  --paper:   #f5f1ea;
  --paper2:  #ebe5d9;
  --ink:     #1a1814;
  --ink2:    #3d3830;
  --ink3:    #6b6359;
  --line:    #d8cfbe;
  --line2:   #e6dfd1;
  --accent:  #b85c3a;   /* warm clay */
  --accent2: #d97a52;
  --success: #5a6b3e;
  --success-bg: #e8ecdc;
  --accent-bg:  #f5e6dc;
  --ink-dark:   #2a2620;

  /* ── Typography ─────────────────────────────────────────── */
  --serif: 'Fraunces', 'EB Garamond', Georgia, serif;
  --sans:  'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --mono:  'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  /* ── Layout ─────────────────────────────────────────────── */
  --max-w:        1280px;
  --max-w-narrow: 980px;
  --pad-x:        56px;
}

/* ── Reset ───────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--sans);
  background: var(--paper);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, svg { display: block; max-width: 100%; }
button { font-family: inherit; }
a { color: inherit; }
input { font: inherit; }

/* ── Container ────────────────────────────────────────────── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding-left: var(--pad-x);
  padding-right: var(--pad-x);
}
.container--narrow {
  max-width: var(--max-w-narrow);
}

/* ── Typography utilities ─────────────────────────────────── */
.serif { font-family: var(--serif); }
.mono  { font-family: var(--mono); }
.italic { font-style: italic; }

.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
}

.meta {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink3);
}

.dot {
  width: 3px; height: 3px; border-radius: 50%;
  background: var(--line);
  display: inline-block;
}

/* ── Eyebrow pill ─────────────────────────────────────────── */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 100px;
  background: var(--paper2);
  font-size: 12px;
  color: var(--ink2);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.pill__dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 500;
  line-height: 1;
  border: 1px solid transparent;
  border-radius: 2px;
  cursor: pointer;
  text-decoration: none;
  letter-spacing: 0.01em;
  transition: opacity .15s, background-color .15s, color .15s;
}
.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.4;
  cursor: not-allowed;
}
.btn--primary {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
.btn--secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--ink);
}
.btn--accent {
  background: var(--accent);
  color: var(--paper);
  border-color: var(--accent);
}
.btn--ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn--block { width: 100%; }
.btn--sm    { padding: 8px 14px; font-size: 12px; }
.btn--lg    { padding: 18px 28px; font-size: 14px; }

/* ── Chip ─────────────────────────────────────────────────── */
.chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  font-family: var(--sans);
  font-size: 13px;
  background: var(--paper);
  color: var(--ink2);
  border: 1px solid var(--line);
  border-radius: 100px;
  cursor: pointer;
  transition: background .15s, color .15s, border-color .15s;
}
.chip[aria-pressed="true"],
.chip.is-active {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

/* ── Toggle ───────────────────────────────────────────────── */
.toggle {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  cursor: pointer;
  user-select: none;
}
.toggle__track {
  position: relative;
  width: 36px;
  height: 20px;
  border-radius: 100px;
  background: var(--line);
  transition: background .15s;
  flex-shrink: 0;
}
.toggle__thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--paper);
  transition: left .15s;
}
.toggle input { display: none; }
.toggle input:checked + .toggle__track { background: var(--accent); }
.toggle input:checked + .toggle__track .toggle__thumb { left: 18px; }
.toggle__label { font-size: 14px; color: var(--ink2); }

/* ── Nav ──────────────────────────────────────────────────── */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px var(--pad-x);
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  position: sticky;
  top: 0;
  z-index: 10;
}
.nav__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  position: relative;
  z-index: 2;
  text-decoration: none;
}
.nav__brand > * {
  pointer-events: none;
}
.nav__logomark {
  height: 28px;
  width: auto;
  display: block;
}
.nav__wordmark {
  height: 22px;
  width: auto;
  display: block;
}
.nav__items {
  display: flex;
  gap: 4px;
}
.nav__link {
  padding: 8px 14px;
  font-family: var(--sans);
  font-size: 13px;
  color: var(--ink3);
  background: transparent;
  border: none;
  cursor: pointer;
  border-bottom: 1px solid transparent;
  text-decoration: none;
  transition: all .15s;
}
.nav__link[aria-current="page"],
.nav__link.is-active {
  color: var(--ink);
  border-bottom-color: var(--ink);
}
.nav__right {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Language switcher */
.lang {
  position: relative;
}
.lang__btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ink2);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 2px;
  cursor: pointer;
}
.lang__icon { font-size: 11px; }
.lang__caret { font-size: 9px; opacity: .5; }
.lang__menu {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  min-width: 160px;
  background: var(--paper);
  border: 1px solid var(--line);
  z-index: 20;
  box-shadow: 0 8px 24px rgba(26,24,20,.06);
  display: none;
}
.lang.is-open .lang__menu { display: block; }
.lang__item {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  padding: 9px 14px;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--line2);
  cursor: pointer;
  color: var(--ink2);
  font-family: var(--sans);
  font-size: 13px;
  text-decoration: none;
}
.lang__item:last-child { border-bottom: none; }
.lang__item:hover { background: var(--paper2); }
.lang__code {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink3);
}

/* ── Hero ─────────────────────────────────────────────────── */
.hero {
  padding: 120px var(--pad-x) 80px;
  max-width: var(--max-w);
  margin: 0 auto;
  position: relative;
}
.hero__title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 92px;
  line-height: 0.96;
  letter-spacing: -0.035em;
  margin: 0;
  max-width: 900px;
}
.hero__title .accent {
  font-style: italic;
  color: var(--accent);
}
.hero__subtitle {
  font-size: 19px;
  line-height: 1.55;
  color: var(--ink2);
  max-width: 580px;
  margin: 36px 0 40px;
}
.hero__cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.hero__decor {
  position: absolute;
  top: 110px;
  right: var(--pad-x);
  font-family: var(--serif);
  font-size: 220px;
  line-height: 1;
  color: var(--line);
  font-style: italic;
  font-weight: 300;
  user-select: none;
  pointer-events: none;
}

/* ── Stats strip ──────────────────────────────────────────── */
.stats {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--paper2);
}
.stats__grid {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 32px var(--pad-x);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.stat {
  border-left: 1px solid var(--line);
  padding-left: 32px;
}
.stat:first-child {
  border-left: none;
  padding-left: 0;
}
.stat__value {
  font-family: var(--serif);
  font-size: 36px;
  font-weight: 400;
  color: var(--ink);
  letter-spacing: -0.02em;
}
.stat__label {
  font-size: 12px;
  color: var(--ink3);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-top: 4px;
}

/* ── Section heading ──────────────────────────────────────── */
.section {
  padding: 100px var(--pad-x);
  max-width: var(--max-w);
  margin: 0 auto;
}
.section__head {
  display: flex;
  align-items: baseline;
  gap: 24px;
  margin-bottom: 56px;
}
.section__num {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.1em;
}
.section__title {
  font-family: var(--serif);
  font-size: 44px;
  font-weight: 400;
  margin: 0;
  letter-spacing: -0.02em;
}

/* ── Pillars (3 cards on hairlines) ───────────────────────── */
.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
}
.pillar {
  background: var(--paper);
  padding: 40px 32px 48px;
}
.pillar__head {
  display: flex;
  justify-content: space-between;
  margin-bottom: 32px;
}
.pillar__num,
.pillar__tag {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
}
.pillar__num { color: var(--ink3); }
.pillar__tag { color: var(--accent); }
.pillar__title {
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 400;
  margin: 0;
  letter-spacing: -0.015em;
}
.pillar__body {
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink2);
  margin: 16px 0 0;
}

/* ── Testimonials ─────────────────────────────────────────── */
.testimonials {
  padding: 40px var(--pad-x) 100px;
  max-width: var(--max-w);
  margin: 0 auto;
}
.testimonials__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.testimonial {
  margin: 0;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.testimonial blockquote {
  margin: 0;
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1.4;
  color: var(--ink);
  letter-spacing: -0.01em;
  font-weight: 400;
}
.testimonial figcaption {
  margin-top: 20px;
  font-size: 13px;
  color: var(--ink3);
  letter-spacing: 0.02em;
}

/* ── CTA dark ─────────────────────────────────────────────── */
.cta-dark {
  border-top: 1px solid var(--line);
  background: var(--ink);
  color: var(--paper);
}
.cta-dark__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 80px var(--pad-x);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
}
.cta-dark__title {
  font-family: var(--serif);
  font-size: 56px;
  font-weight: 400;
  margin: 0;
  letter-spacing: -0.025em;
  max-width: 700px;
}
.cta-dark__title .accent {
  font-style: italic;
  color: var(--accent2);
}
.cta-dark .btn--paper {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--paper);
  padding: 18px 28px;
}

/* ── Footer ───────────────────────────────────────────────── */
.footer {
  background: var(--ink);
  color: var(--ink3);
  border-top: 1px solid var(--ink-dark);
}
.footer__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 32px var(--pad-x);
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  font-family: var(--mono);
}
.footer__inner--rich {
  gap: 20px 32px;
  align-items: center;
  flex-wrap: wrap;
}
.footer__meta {
  display: flex;
  gap: 12px 18px;
  flex-wrap: wrap;
}
.footer__links {
  display: flex;
  align-items: center;
  gap: 10px 18px;
  flex-wrap: wrap;
}
.footer__links a,
.footer__button {
  color: var(--paper);
  text-decoration: none;
  opacity: 0.86;
}
.footer__button {
  padding: 0;
  font: inherit;
  border: none;
  background: transparent;
  cursor: pointer;
}
.footer__links a:hover,
.footer__button:hover {
  opacity: 1;
}

/* ── Topics catalogue ─────────────────────────────────────── */
.topics-head {
  padding: 64px var(--pad-x) 0;
  max-width: var(--max-w);
  margin: 0 auto;
}
.topics-head h1 {
  font-family: var(--serif);
  font-size: 64px;
  font-weight: 400;
  margin: 12px 0 8px;
  letter-spacing: -0.025em;
}
.topics-head p {
  font-size: 16px;
  color: var(--ink2);
  max-width: 600px;
  margin: 0 0 40px;
}
.topics-tabs {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--line);
}
.topics-tab {
  padding: 12px 16px;
  font-family: var(--sans);
  font-size: 13px;
  color: var(--ink3);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  cursor: pointer;
}
.topics-tab[aria-pressed="true"],
.topics-tab.is-active {
  color: var(--ink);
  border-bottom-color: var(--accent);
}
.topics-grid {
  max-width: var(--max-w);
  margin: 32px auto 0;
  padding: 0 var(--pad-x) 80px;
}
.topics-grid__inner {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
}
.topic {
  background: var(--paper);
  border: none;
  cursor: pointer;
  text-align: left;
  padding: 28px 32px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  font-family: var(--sans);
  text-decoration: none;
  color: inherit;
}
.topic:hover { background: var(--paper2); }
.topic__meta {
  display: flex;
  gap: 12px;
  margin-bottom: 12px;
  align-items: center;
}
.topic__title {
  font-family: var(--serif);
  font-size: 26px;
  font-weight: 400;
  margin: 0;
  letter-spacing: -0.015em;
}
.topic__tasks {
  font-size: 13px;
  color: var(--ink3);
  margin-top: 8px;
}
.topic__arrow {
  font-family: var(--serif);
  font-size: 28px;
  color: var(--ink3);
  font-style: italic;
  flex-shrink: 0;
  margin-left: 16px;
}

/* ── Task page ────────────────────────────────────────────── */
.task {
  max-width: var(--max-w-narrow);
  margin: 0 auto;
  padding: 56px var(--pad-x) 80px;
}
.task__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.task__title {
  font-family: var(--serif);
  font-size: 52px;
  font-weight: 400;
  margin: 0 0 32px;
  letter-spacing: -0.025em;
  line-height: 1.05;
}
.task__problem {
  padding: 32px 36px;
  border-left: 2px solid var(--accent);
  background: var(--paper2);
  margin-bottom: 40px;
}
.task__problem p {
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1.5;
  margin: 0;
  color: var(--ink);
}

/* Answer input */
.answer {
  border: 1px solid var(--line);
  padding: 28px 32px;
  margin-bottom: 40px;
  background: var(--paper);
}
.answer__label {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.answer__row {
  display: flex;
  gap: 12px;
  align-items: center;
}
.answer__input {
  flex: 1;
  padding: 14px 16px;
  font-family: var(--serif);
  font-size: 22px;
  border: 1px solid var(--line);
  background: var(--paper2);
  color: var(--ink);
  outline: none;
  border-radius: 0;
}
.answer__input:focus {
  border-color: var(--ink);
}
.answer__unit {
  font-family: var(--serif);
  font-size: 18px;
  color: var(--ink3);
}
.answer__feedback {
  margin-top: 16px;
  padding: 12px;
  font-size: 14px;
  font-family: var(--sans);
  display: none;
}
.answer.is-correct .answer__feedback--correct,
.answer.is-wrong .answer__feedback--wrong { display: block; }
.answer__feedback--correct {
  background: var(--success-bg);
  color: var(--success);
}
.answer__feedback--wrong {
  background: var(--accent-bg);
  color: var(--accent);
}

/* Hints */
.hints__head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 20px;
}
.hints__title {
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 400;
  margin: 0;
  letter-spacing: -0.02em;
}
.hint {
  border-top: 1px solid var(--line);
  padding: 24px 0;
}
.hint:last-child { border-bottom: 1px solid var(--line); }
.hint__row {
  display: flex;
  align-items: flex-start;
  gap: 24px;
}
.hint__num {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.08em;
  width: 32px;
  flex-shrink: 0;
}
.hint__body { flex: 1; }
.hint__title {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 400;
  color: var(--ink3);
}
.hint__text {
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink2);
  margin: 10px 0 0;
  display: none;
}
.hint.is-open .hint__title { color: var(--ink); }
.hint.is-open .hint__text { display: block; }
.hint__action { display: none; }
.hint.is-next .hint__action { display: inline-flex; }

.hints { margin-bottom: 40px; }

/* Solution */
.solution__reveal {
  padding: 16px 24px;
  font-family: var(--sans);
  font-size: 14px;
  color: var(--paper);
  background: var(--accent);
  border: none;
  border-radius: 2px;
  width: 100%;
  cursor: pointer;
}
.solution__box {
  background: var(--ink);
  color: var(--paper);
  padding: 32px 36px;
  display: none;
}
.solution.is-open .solution__reveal { display: none; }
.solution.is-open .solution__box { display: block; }
.solution__label {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent2);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.solution__step {
  display: flex;
  gap: 20px;
  padding: 14px 0;
  border-bottom: 1px solid var(--ink-dark);
}
.solution__step:last-child { border-bottom: none; }
.solution__step-num {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent2);
  letter-spacing: 0.08em;
  width: 24px;
  flex-shrink: 0;
}
.solution__step-text {
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.5;
}

/* ── Generator ────────────────────────────────────────────── */
.generator {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 56px var(--pad-x) 80px;
}
.generator h1 {
  font-family: var(--serif);
  font-size: 56px;
  font-weight: 400;
  margin: 12px 0 40px;
  letter-spacing: -0.025em;
}
.generator__layout {
  display: grid;
  grid-template-columns: 1fr 460px;
  gap: 56px;
}
.gen-section {
  margin-bottom: 36px;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--line);
}
.gen-section:last-child { border-bottom: none; }
.gen-section__head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 16px;
}
.gen-section__num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.08em;
}
.gen-section__title {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 400;
  margin: 0;
  letter-spacing: -0.015em;
}
.chips-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.options-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
.diff-btn {
  padding: 14px 16px;
  font-family: var(--sans);
  font-size: 14px;
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--line);
  cursor: pointer;
  border-radius: 2px;
  text-align: left;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.diff-btn[aria-pressed="true"] {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
.diff-btn__dots {
  font-family: var(--mono);
  font-size: 10px;
  opacity: .6;
}
.range-row {
  display: flex;
  align-items: center;
  gap: 16px;
}
.range-row input[type="range"] {
  flex: 1;
  accent-color: var(--accent);
}
.range-row__value {
  font-family: var(--serif);
  font-size: 36px;
  font-weight: 400;
  min-width: 80px;
  text-align: right;
  letter-spacing: -0.02em;
}
.range-bounds {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink3);
  margin-top: 6px;
  letter-spacing: 0.05em;
}
.layout-btn {
  padding: 20px 12px;
  font-family: var(--sans);
  font-size: 13px;
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--line);
  cursor: pointer;
  border-radius: 2px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
.layout-btn[aria-pressed="true"] {
  background: var(--paper2);
  border-color: var(--ink);
}
.size-row {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}
.size-btn {
  padding: 10px 16px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: transparent;
  color: var(--ink2);
  border: 1px solid var(--line);
  border-radius: 2px;
  cursor: pointer;
}
.size-btn[aria-pressed="true"] {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

/* Generator preview */
.preview {
  position: sticky;
  top: 96px;
  align-self: flex-start;
}
.preview__label {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.mini-pdf {
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 4px 16px rgba(26,24,20,.08);
  aspect-ratio: 1/1.414;
  padding: 24px;
  font-family: var(--serif);
  color: var(--ink);
  position: relative;
  overflow: hidden;
}
.mini-pdf__head {
  border-bottom: 1px solid var(--line);
  padding-bottom: 10px;
  margin-bottom: 14px;
}
.mini-pdf__topic {
  font-size: 16px;
  font-weight: 500;
}
.mini-pdf__meta {
  font-size: 9px;
  color: var(--ink3);
  font-family: var(--mono);
  letter-spacing: 0.08em;
  margin-top: 3px;
  text-transform: uppercase;
}
.mini-pdf__name-row {
  display: flex;
  gap: 16px;
  font-size: 9px;
  margin-bottom: 12px;
  font-family: var(--sans);
  color: var(--ink3);
}
.mini-pdf__name-row > div {
  flex: 1;
  border-bottom: 1px solid var(--ink3);
  padding-bottom: 2px;
}
.mini-pdf__items {
  display: grid;
  gap: 8px 14px;
}
.mini-pdf__items--2 { grid-template-columns: repeat(2, 1fr); }
.mini-pdf__items--3 { grid-template-columns: repeat(3, 1fr); }
.mini-pdf__items--1 { grid-template-columns: 1fr; }
.mini-pdf__item {
  font-size: 11px;
  font-family: var(--serif);
  color: var(--ink2);
}
.mini-pdf__brand {
  position: absolute;
  bottom: 12px;
  right: 16px;
  font-family: var(--mono);
  font-size: 8px;
  color: var(--ink3);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ── PDF Preview page ─────────────────────────────────────── */
.pdf-preview {
  background: var(--paper2);
  min-height: 800px;
  padding: 56px var(--pad-x) 100px;
}
.pdf-preview__inner {
  max-width: var(--max-w-narrow);
  margin: 0 auto;
}
.pdf-preview__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
  gap: 24px;
  flex-wrap: wrap;
}
.pdf-preview__title {
  font-family: var(--serif);
  font-size: 36px;
  font-weight: 400;
  margin: 8px 0 0;
  letter-spacing: -0.02em;
}
.pdf-preview__pages {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.pdf-page-wrap__label {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.pdf-page {
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 8px 32px rgba(26,24,20,.08);
  aspect-ratio: 1/1.414;
  padding: 32px 36px;
  font-family: var(--serif);
  color: var(--ink);
  display: flex;
  flex-direction: column;
}
.pdf-page__head {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  padding-bottom: 12px;
  margin-bottom: 16px;
}
.pdf-page__topic {
  font-size: 18px;
  font-weight: 500;
  letter-spacing: -0.015em;
}
.pdf-page__meta {
  font-family: var(--mono);
  font-size: 9px;
  color: var(--ink3);
  letter-spacing: 0.08em;
  margin-top: 3px;
  text-transform: uppercase;
}
.pdf-page__brand {
  font-family: var(--serif);
  font-style: italic;
  font-size: 14px;
  color: var(--ink3);
}
.pdf-page__name-row {
  display: flex;
  gap: 18px;
  font-size: 10px;
  margin-bottom: 18px;
  font-family: var(--sans);
  color: var(--ink3);
}
.pdf-page__name-row > div {
  border-bottom: 1px solid var(--ink3);
  padding-bottom: 3px;
}
.pdf-page__name-row > div:first-child { flex: 1; }
.pdf-page__name-row > div:last-child { width: 120px; }
.pdf-page__items {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 32px;
  flex: 1;
}
.pdf-page__item {
  font-size: 13px;
  font-family: var(--serif);
  display: flex;
  gap: 6px;
}
.pdf-page__item-num {
  color: var(--ink3);
  width: 22px;
}
.pdf-page__item-answer { color: var(--ink3); }
.pdf-page--answers .pdf-page__item-answer { color: var(--accent); }
.pdf-page__foot {
  margin-top: 28px;
  padding-top: 12px;
  border-top: 1px solid var(--line2);
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 8px;
  color: var(--ink3);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ── Grade Picker (catalogue step 1) ──────────────────────── */
.grade-picker {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 64px var(--pad-x) 80px;
}
.grade-picker__head {
  margin-bottom: 56px;
  max-width: 720px;
}
.grade-picker__head .eyebrow { display: block; margin-bottom: 12px; }
.grade-picker__head h1 {
  font-family: var(--serif);
  font-size: 64px;
  font-weight: 400;
  letter-spacing: -0.025em;
  margin: 0 0 12px;
  line-height: 1.0;
}
.grade-picker__head p {
  font-size: 16px;
  color: var(--ink2);
  margin: 0;
  line-height: 1.55;
}
.grade-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.grade-card {
  background: var(--paper);
  padding: 48px 40px 56px;
  text-decoration: none;
  color: inherit;
  display: flex;
  align-items: flex-start;
  gap: 24px;
  position: relative;
  min-height: 220px;
  transition: background .15s;
}
.grade-card:hover { background: var(--paper2); }
.grade-card.is-locked {
  cursor: not-allowed;
  background: var(--paper);
  opacity: 0.55;
}
.grade-card.is-locked:hover { background: var(--paper); }
.grade-card__num {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 300;
  font-size: 110px;
  line-height: 0.85;
  color: var(--accent);
  letter-spacing: -0.04em;
  flex-shrink: 0;
  width: 110px;
}
.grade-card.is-locked .grade-card__num { color: var(--line); }
.grade-card__body { flex: 1; padding-top: 14px; }
.grade-card__label {
  font-family: var(--serif);
  font-size: 32px;
  font-weight: 400;
  letter-spacing: -0.02em;
  margin: 0 0 6px;
}
.grade-card__sublabel {
  font-size: 15px;
  color: var(--ink2);
  margin: 0 0 24px;
  line-height: 1.5;
}
.grade-card__total {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.grade-card__total .accent { color: var(--accent); }
.grade-card__lock {
  position: absolute;
  top: 24px;
  right: 28px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ink3);
  text-transform: uppercase;
}
.grade-card__arrow {
  position: absolute;
  bottom: 28px;
  right: 28px;
  font-family: var(--serif);
  font-size: 28px;
  font-style: italic;
  color: var(--ink3);
}
.grade-card.is-locked .grade-card__arrow { display: none; }

.grade-picker__foot {
  margin-top: 48px;
  padding: 28px 32px;
  border: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.grade-picker__foot-text {
  font-family: var(--serif);
  font-size: 22px;
  letter-spacing: -0.015em;
  margin: 0;
}
.grade-picker__foot-sub {
  font-size: 13px;
  color: var(--ink3);
  margin-top: 4px;
}

/* ── Grade View (catalogue step 2: sections + topics) ────── */
.grade-view {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 32px var(--pad-x) 80px;
}
.crumbs {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 32px;
}
.crumbs a {
  color: var(--ink3);
  text-decoration: none;
}
.crumbs a:hover { color: var(--ink); }
.crumbs__sep { margin: 0 10px; opacity: 0.5; }
.crumbs__current { color: var(--accent); }

.grade-view__head {
  display: flex;
  align-items: baseline;
  gap: 24px;
  margin-bottom: 56px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--line);
}
.grade-view__num {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 300;
  font-size: 92px;
  line-height: 0.9;
  color: var(--accent);
  letter-spacing: -0.04em;
}
.grade-view__title {
  font-family: var(--serif);
  font-size: 44px;
  font-weight: 400;
  margin: 0 0 6px;
  letter-spacing: -0.025em;
}
.grade-view__sub {
  font-size: 16px;
  color: var(--ink2);
  margin: 0;
}

.grade-view__layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 56px;
  align-items: flex-start;
}

/* Sections sidebar */
.sections {
  position: sticky;
  top: 84px;
  align-self: flex-start;
}
.sections__title {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0 0 16px;
  padding-left: 16px;
}
.section-link {
  display: block;
  padding: 14px 16px;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
  border-left: 3px solid transparent;
  font-family: var(--sans);
  transition: background .15s, border-color .15s;
}
.section-link:hover { background: var(--paper2); }
.section-link[aria-current="true"] {
  background: var(--paper2);
  border-left-color: var(--accent);
}
.section-link__num {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink3);
  letter-spacing: 0.08em;
  margin-bottom: 4px;
  display: block;
}
.section-link__title {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 400;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--ink);
}
.section-link__de {
  font-family: var(--serif);
  font-style: italic;
  font-size: 13px;
  color: var(--ink3);
  margin-top: 2px;
}
.section-link__count {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink3);
  letter-spacing: 0.08em;
  margin-top: 6px;
  text-transform: uppercase;
}

/* Topics list (right column) */
.subtopics__head {
  margin-bottom: 24px;
}
.subtopics__num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.subtopics__title {
  font-family: var(--serif);
  font-size: 36px;
  font-weight: 400;
  margin: 8px 0 4px;
  letter-spacing: -0.02em;
}
.subtopics__de {
  font-family: var(--serif);
  font-style: italic;
  font-size: 17px;
  color: var(--ink3);
}

.subtopic {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
  text-decoration: none;
  color: inherit;
  transition: background .15s, padding-left .15s;
  margin: 0 -8px;
  padding-left: 8px;
  padding-right: 8px;
}
.subtopic:hover {
  background: var(--paper2);
}
.subtopic:last-child { border-bottom: 1px solid var(--line); }
.subtopic.is-disabled {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}
.subtopic__num {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink3);
  letter-spacing: 0.08em;
  width: 32px;
  flex-shrink: 0;
  padding-top: 4px;
}
.subtopic__body { flex: 1; min-width: 0; }
.subtopic__title {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 400;
  letter-spacing: -0.015em;
  margin: 0;
  color: var(--ink);
}
.subtopic__de {
  font-family: var(--serif);
  font-style: italic;
  font-size: 15px;
  color: var(--ink3);
  margin-top: 2px;
}
.subtopic__count {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  flex-shrink: 0;
  padding-top: 6px;
  width: 80px;
  text-align: right;
}
.subtopic__actions {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-shrink: 0;
  padding-top: 2px;
}
.subtopic__print {
  padding: 6px 10px;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink3);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 2px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  transition: background .15s, color .15s, border-color .15s;
}
.subtopic__print:hover {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
.subtopic__arrow {
  font-family: var(--serif);
  font-size: 24px;
  font-style: italic;
  color: var(--ink3);
  width: 24px;
  text-align: right;
  padding-top: 2px;
}

.subtopics__total {
  margin-top: 32px;
  padding: 28px 32px;
  background: var(--ink);
  color: var(--paper);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  text-decoration: none;
}
.subtopics__total-text {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 400;
  letter-spacing: -0.015em;
  margin: 0;
}
.subtopics__total-sub {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 4px;
}
.subtopics__total .btn--paper {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--paper);
}

/* ── Generator breadcrumb ─────────────────────────────────── */
.gen-breadcrumb {
  background: var(--paper2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-bottom: 56px;
}
.gen-breadcrumb__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 16px var(--pad-x);
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.gen-breadcrumb__label {
  margin-right: 14px;
  color: var(--ink3);
}
.gen-breadcrumb__sep { margin: 0 10px; opacity: 0.5; }
.gen-breadcrumb__current { color: var(--accent); }

/* Disabled chip variant for the locked generator picks */
.chip:disabled,
.chip[aria-disabled="true"] {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ── Grade 1 Math Hub ────────────────────────────────────── */
.grade1-languages {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.grade1-languages__link {
  padding: 6px 10px;
  border: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink3);
}
.grade1-languages__link[aria-current="true"] {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

.grade1-page,
.grade1-index {
  max-width: var(--max-w-narrow);
  margin: 0 auto;
  padding: 40px var(--pad-x) 80px;
}
.grade1-index__head,
.grade1-topic__head {
  margin-bottom: 40px;
}
.grade1-index__head .eyebrow,
.grade1-topic__head .eyebrow {
  display: block;
  margin-bottom: 12px;
}
.grade1-index__title,
.grade1-topic__title {
  font-family: var(--serif);
  font-size: 52px;
  font-weight: 400;
  letter-spacing: -0.025em;
  line-height: 1.02;
  margin: 0 0 16px;
}
.grade1-index__intro,
.grade1-topic__lead {
  font-size: 18px;
  line-height: 1.7;
  color: var(--ink2);
  margin: 0;
}
.grade1-list-title {
  font-family: var(--serif);
  font-size: 30px;
  font-weight: 400;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
}
.grade1-topic-grid {
  display: grid;
  gap: 18px;
}
.grade1-topic-card {
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 24px 26px;
}
.grade1-topic-card__title {
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 400;
  letter-spacing: -0.02em;
  margin: 0 0 10px;
}
.grade1-topic-card__description {
  color: var(--ink2);
  margin: 0 0 16px;
  line-height: 1.6;
}
.grade1-topic-card__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.grade1-topic-card__links a {
  text-decoration: none;
}

.grade1-section {
  margin-top: 44px;
}
.grade1-section__title {
  font-family: var(--serif);
  font-size: 30px;
  font-weight: 400;
  letter-spacing: -0.02em;
  margin: 0 0 18px;
}
.grade1-copy-list,
.grade1-faq {
  display: grid;
  gap: 14px;
}
.grade1-copy-list p,
.grade1-copy-list li,
.grade1-faq p {
  margin: 0;
  color: var(--ink2);
  line-height: 1.65;
}
.grade1-copy-list {
  padding-left: 20px;
}
.grade1-example-grid {
  display: grid;
  gap: 12px;
}
.grade1-example {
  border-left: 2px solid var(--accent);
  background: var(--paper2);
  padding: 18px 20px;
}
.grade1-example__question {
  font-family: var(--serif);
  font-size: 21px;
  margin: 0 0 8px;
}
.grade1-example__answer {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.grade1-practice {
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 24px;
}
.grade1-practice__lead {
  color: var(--ink2);
  margin: 0 0 18px;
}
.grade1-practice__prompt {
  min-height: 72px;
  border-left: 2px solid var(--accent);
  background: var(--paper2);
  padding: 18px 20px;
  margin-bottom: 16px;
  font-family: var(--serif);
  font-size: 24px;
}
.grade1-practice__prompt p {
  margin: 0;
}
.grade1-objects,
.grade1-compare,
.grade1-numberline,
.grade1-shape {
  font-size: 30px;
  line-height: 1.5;
  letter-spacing: 0.06em;
}
.grade1-compare {
  display: flex;
  justify-content: center;
  gap: 16px;
  align-items: center;
}
.grade1-shape {
  text-align: center;
}
.grade1-answer-input {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--line);
  background: var(--paper2);
  font-family: var(--serif);
  font-size: 22px;
  color: var(--ink);
}
.grade1-choice-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.grade1-choice {
  padding: 12px 16px;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  cursor: pointer;
  font-size: 16px;
}
.grade1-choice[aria-pressed="true"] {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}
.grade1-practice__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}
.grade1-feedback {
  margin-top: 16px;
  padding: 12px 14px;
  font-size: 14px;
  display: none;
}
.grade1-feedback.is-correct,
.grade1-feedback.is-wrong {
  display: block;
}
.grade1-feedback.is-correct {
  background: var(--success-bg);
  color: var(--success);
}
.grade1-feedback.is-wrong {
  background: var(--accent-bg);
  color: var(--accent);
}

.grade1-worksheet-card {
  border: 1px solid var(--line);
  padding: 24px;
  background: var(--paper);
}
.grade1-worksheet-card p {
  margin: 0 0 16px;
  color: var(--ink2);
  line-height: 1.6;
}

.grade1-links {
  display: grid;
  gap: 10px;
}
.grade1-links__row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.grade1-links a {
  text-decoration: none;
}

.grade1-faq__item {
  border-top: 1px solid var(--line);
  padding-top: 16px;
}
.grade1-faq__item:last-child {
  border-bottom: 1px solid var(--line);
  padding-bottom: 16px;
}
.grade1-faq__question {
  font-family: var(--serif);
  font-size: 22px;
  margin: 0 0 6px;
}

.grade1-worksheet-toolbar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* ── Legal pages ──────────────────────────────────────────── */
.legal-header {
  border-bottom: 1px solid var(--line);
  background: rgba(245, 241, 234, 0.96);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.legal-header__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 18px var(--pad-x);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px 24px;
  flex-wrap: wrap;
}
.legal-header__brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.legal-header__logo {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--paper);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--serif);
  font-size: 16px;
  font-style: italic;
}
.legal-header__wordmark {
  font-family: var(--serif);
  font-size: 20px;
  letter-spacing: -0.01em;
}
.legal-header__nav {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.legal-header__back {
  font-size: 13px;
  text-decoration: none;
  color: var(--ink2);
}
.legal-switcher {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.legal-switcher__link {
  padding: 7px 12px;
  border: 1px solid var(--line);
  text-decoration: none;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ink2);
}
.legal-switcher__link[aria-current="page"] {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}
.legal-page {
  max-width: var(--max-w-narrow);
  margin: 0 auto;
  padding: 48px var(--pad-x) 88px;
}
.legal-page__hero {
  margin-bottom: 28px;
}
.legal-page__title {
  font-family: var(--serif);
  font-size: 56px;
  font-weight: 400;
  letter-spacing: -0.03em;
  margin: 10px 0 12px;
}
.legal-page__lead {
  max-width: 760px;
  color: var(--ink2);
  font-size: 18px;
  line-height: 1.65;
  margin: 0;
}
.legal-page__note {
  display: inline-block;
  margin-top: 16px;
  padding: 10px 14px;
  background: var(--paper2);
  border-left: 2px solid var(--accent);
  color: var(--ink2);
  font-size: 14px;
}
.legal-grid {
  display: grid;
  gap: 18px;
}
.legal-card {
  border: 1px solid var(--line);
  background: rgba(255, 250, 243, 0.68);
  padding: 24px 26px;
}
.legal-card h2,
.legal-card h3 {
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: -0.02em;
  margin: 0 0 12px;
}
.legal-card h2 {
  font-size: 28px;
}
.legal-card h3 {
  font-size: 21px;
  margin-top: 20px;
}
.legal-card p,
.legal-card li {
  color: var(--ink2);
  line-height: 1.7;
}
.legal-card p {
  margin: 0 0 12px;
}
.legal-card p:last-child {
  margin-bottom: 0;
}
.legal-card ul {
  margin: 0;
  padding-left: 20px;
}
.legal-card a {
  color: var(--accent);
}

/* ── Privacy settings ─────────────────────────────────────── */
.privacy-modal[hidden] {
  display: none;
}
.privacy-modal {
  position: fixed;
  inset: 0;
  z-index: 50;
}
.privacy-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(26, 24, 20, 0.46);
}
.privacy-modal__dialog {
  position: relative;
  width: min(560px, calc(100vw - 32px));
  margin: min(12vh, 80px) auto 0;
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: 0 20px 40px rgba(26, 24, 20, 0.18);
  padding: 24px;
}
.privacy-modal__title {
  font-family: var(--serif);
  font-size: 34px;
  font-weight: 400;
  letter-spacing: -0.025em;
  margin: 0 0 10px;
}
.privacy-modal__body p {
  color: var(--ink2);
  margin: 0 0 12px;
  line-height: 1.65;
}
.privacy-modal__option {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin: 18px 0;
}
.privacy-modal__option input {
  margin-top: 2px;
}
.privacy-modal__option strong {
  display: block;
  margin-bottom: 4px;
}
.privacy-modal__hint {
  color: var(--ink3);
  font-size: 13px;
}
.privacy-modal__actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  flex-wrap: wrap;
}

/* ── Print ────────────────────────────────────────────────── */
@media print {
  .nav, .footer, .cta-dark, .preview, .hero__cta { display: none !important; }
  body { background: #fff; }
  .pdf-page {
    box-shadow: none;
    border: none;
    page-break-after: always;
  }
  @page { size: A4; margin: 16mm; }
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 1100px) {
  .generator__layout { grid-template-columns: 1fr; }
  .preview { position: static; }
}
@media (max-width: 900px) {
  :root { --pad-x: 24px; }
  .hero { padding: 80px var(--pad-x) 56px; }
  .hero__title { font-size: 56px; }
  .hero__decor { display: none; }
  .stats__grid { grid-template-columns: repeat(2, 1fr); }
  .pillars { grid-template-columns: 1fr; }
  .testimonials__grid { grid-template-columns: 1fr; gap: 24px; }
  .topics-grid__inner { grid-template-columns: 1fr; }
  .pdf-preview__pages { grid-template-columns: 1fr; }
  .section__title { font-size: 32px; }
  .cta-dark__title { font-size: 36px; }
  .topics-head h1 { font-size: 44px; }
  .task__title { font-size: 36px; }
  .generator h1 { font-size: 36px; }
  .nav {
    padding: 14px var(--pad-x);
    flex-wrap: wrap;
    gap: 12px 16px;
  }
  .nav__brand {
    min-width: 0;
  }
  .nav__right {
    margin-left: auto;
  }
  .nav__items {
    display: flex;
    order: 3;
    width: 100%;
    gap: 8px;
    flex-wrap: wrap;
  }
  .nav__link {
    padding: 8px 12px;
    border: 1px solid var(--line);
    white-space: nowrap;
  }
  .nav__link[aria-current="page"],
  .nav__link.is-active {
    background: var(--paper2);
    border-bottom-color: var(--ink);
  }

  .grade-grid { grid-template-columns: 1fr; }
  .grade-card__num { font-size: 80px; width: 80px; }
  .grade-card__label { font-size: 26px; }
  .grade-picker__head h1 { font-size: 44px; }
  .grade-view__layout { grid-template-columns: 1fr; gap: 32px; }
  .sections { position: static; }
  .grade-view__num { font-size: 68px; }
  .grade-view__title { font-size: 32px; }
  .subtopics__title { font-size: 28px; }
  .subtopic { flex-wrap: wrap; gap: 12px; }
  .subtopic__count { width: auto; text-align: left; }

  .grade1-index__title,
  .grade1-topic__title { font-size: 38px; }
  .grade1-practice__prompt { font-size: 20px; }
  .grade1-objects,
  .grade1-compare,
  .grade1-numberline,
  .grade1-shape { font-size: 24px; }

  .footer__inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .legal-page__title {
    font-size: 40px;
  }
  .legal-header__inner,
  .legal-header__nav {
    align-items: flex-start;
  }
  .privacy-modal__dialog {
    margin-top: 24px;
  }
}