/* AulaToon website. Brand colours come from assets/brand/README.md. */

:root {
  --cream: #fffaf3;
  --paper: #f3eadb;
  --ink: #252018;
  --ink-soft: #4a433a;
  --muted: #5c554b;
  --line: #e6dccb;
  --yellow: #ffc21a;
  --yellow-soft: #fff1c7;
  --yellow-wash: #fff6da;
  --teal: #168aad;
  --teal-dark: #0e6a87;
  --teal-soft: #e3f2f7;
  --error-bg: #fde7e2;
  --error-ink: #8a2414;
  --font-display: "Fredoka", ui-rounded, "SF Pro Rounded", "Hiragino Maru Gothic ProN", "Arial Rounded MT Bold", system-ui, sans-serif;
  --font-body: "Atkinson Hyperlegible", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-textbook: Georgia, "Times New Roman", serif;
  --radius: 18px;
  --gutter: 32px;
  color-scheme: light;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.55;
  overflow-x: hidden;
}

img,
svg {
  display: block;
  max-width: 100%;
}

img {
  height: auto;
}

a {
  color: var(--teal-dark);
  text-underline-offset: 3px;
}

a:hover {
  color: var(--ink);
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  letter-spacing: -0.01em;
  margin: 0;
}

p {
  margin: 0;
}

:focus-visible {
  outline: 3px solid var(--teal);
  outline-offset: 3px;
}

[hidden] {
  display: none !important;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.break {
  overflow-wrap: anywhere;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 100;
  padding: 10px 16px;
  border-radius: 12px;
  background: var(--ink);
  color: var(--cream);
  font-weight: 700;
}

.skip-link:focus {
  top: 12px;
  color: var(--cream);
}

.wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.wrap--narrow {
  max-width: 880px;
}

.dots {
  background-image: radial-gradient(rgba(37, 32, 24, 0.13) 1.3px, transparent 1.7px);
  background-size: 16px 16px;
}

.dots-light {
  background-image: radial-gradient(rgba(255, 250, 243, 0.1) 1.3px, transparent 1.7px);
  background-size: 16px 16px;
}

.icon {
  flex: none;
}

.icon--teal {
  color: var(--teal);
}

.icon--yellow {
  color: var(--yellow);
}

/* ---------- Buttons, pills, tags ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 54px;
  padding: 0 28px;
  border: 3px solid var(--ink);
  border-radius: 999px;
  background: var(--yellow);
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 19px;
  line-height: 1.1;
  text-decoration: none;
  box-shadow: 3px 4px 0 var(--ink);
  cursor: pointer;
  transition: transform 0.12s, box-shadow 0.12s;
}

.btn:hover {
  color: var(--ink);
  transform: translate(-2px, -2px);
  box-shadow: 5px 6px 0 var(--ink);
}

.btn:disabled {
  cursor: progress;
  opacity: 0.7;
  transform: none;
}

.btn--ghost {
  background: transparent;
  box-shadow: none;
}

.btn--ghost:hover {
  background: #fff;
  box-shadow: none;
  transform: none;
}

.btn--small {
  min-height: 48px;
  padding: 0 22px;
  font-size: 17px;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
  padding: 6px 16px 6px 8px;
  border: 2px solid var(--ink);
  border-radius: 999px;
  background: #fff;
  font-weight: 700;
  font-size: 15px;
}

.pill__tag {
  padding: 2px 10px;
  border-radius: 999px;
  background: var(--yellow);
}

.tag {
  display: inline-block;
  margin-bottom: 14px;
  padding: 4px 14px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--yellow);
  font-weight: 700;
  font-size: 15px;
}

.eyebrow {
  color: var(--teal-dark);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.eyebrow--light {
  color: var(--yellow);
}

.bubble {
  position: relative;
  padding: 12px 16px;
  border: 2.5px solid var(--ink);
  border-radius: 16px;
  background: #fff;
  font-size: 16px;
  line-height: 1.4;
}

.bubble::after {
  content: "";
  position: absolute;
  left: 28px;
  top: -11px;
  width: 16px;
  height: 16px;
  background: inherit;
  border-left: 2.5px solid var(--ink);
  border-top: 2.5px solid var(--ink);
  transform: rotate(45deg);
}

.panel {
  border: 3px solid var(--ink);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 6px 7px 0 var(--yellow);
}

.panel--ink {
  background: var(--cream);
  box-shadow: 6px 7px 0 var(--ink);
}

.panel--big {
  box-shadow: 10px 12px 0 var(--yellow);
}

/* ---------- Header ---------- */

.lang-banner {
  background: var(--ink);
  color: var(--cream);
  font-size: 16px;
}

.lang-banner__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px 18px;
  min-height: 52px;
  padding-top: 6px;
  padding-bottom: 6px;
}

.lang-banner__action {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 36px;
  padding: 0 14px;
  border-radius: 999px;
  background: var(--yellow);
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
}

.lang-banner__action:hover {
  color: var(--ink);
  background: var(--yellow-soft);
}

.lang-banner__close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--cream);
  cursor: pointer;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 2px solid var(--ink);
  background: rgba(255, 250, 243, 0.95);
  backdrop-filter: blur(6px);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 76px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  text-decoration: none;
}

.brand img {
  width: 44px;
  height: 44px;
  border: 2px solid var(--ink);
  border-radius: 12px;
}

.brand__name {
  font-family: var(--font-display);
  font-size: 27px;
  font-weight: 700;
}

.brand:hover {
  color: var(--ink);
}

.brand--light,
.brand--light:hover {
  color: var(--cream);
}

.brand--light img {
  border-color: transparent;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 26px;
}

.site-nav a {
  padding: 10px 2px;
  color: var(--ink);
  font-weight: 700;
  font-size: 16px;
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--teal-dark);
  text-decoration: underline;
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.lang-switch {
  display: flex;
  align-items: center;
  padding: 3px;
  border: 2px solid var(--ink);
  border-radius: 999px;
  background: #fff;
  font-weight: 700;
  font-size: 15px;
}

.lang-switch__item {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 12px;
  border-radius: 999px;
  color: var(--ink);
  text-decoration: none;
}

.lang-switch__item.is-current {
  background: var(--ink);
  color: var(--cream);
}

a.lang-switch__item:hover {
  background: var(--yellow-soft);
  color: var(--ink);
}

/* ---------- Sections ---------- */

.section {
  padding: 104px 0;
}

.section--tight-top {
  padding-top: 40px;
}

.section--paper {
  background-color: var(--paper);
  border-top: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
}

.section--paper + .section--paper,
.section--yellow + .section--paper {
  border-top: 0;
}

.section--yellow {
  background-color: var(--yellow);
  border-bottom: 2px solid var(--ink);
}

.section--ink {
  background-color: var(--ink);
  color: var(--cream);
}

.section__title {
  margin-top: 10px;
  max-width: 820px;
  font-size: clamp(34px, 4.4vw, 54px);
  line-height: 1.08;
}

.tag + .section__title {
  margin-top: 0;
}

.section__lead {
  max-width: 660px;
  margin-top: 14px;
  font-size: 20px;
}

.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 40px;
  align-items: center;
}

.grid-2--wide-gap {
  gap: 56px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
  margin: 52px 0 0;
  padding: 0;
  list-style: none;
}

.grid-6 {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 20px;
  margin: 48px 0 0;
  padding: 0;
  list-style: none;
}

/* ---------- Hero ---------- */

.hero {
  padding: 72px 0 96px;
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 56px;
  align-items: center;
}

.hero__title {
  font-size: clamp(44px, 6vw, 78px);
  line-height: 1.02;
  font-weight: 700;
}

.highlight {
  padding: 0 10px;
  border-radius: 12px;
  background: var(--yellow);
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

.hero__lead {
  max-width: 540px;
  margin-top: 28px;
  color: var(--ink-soft);
  font-size: 21px;
}

.hero__ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 36px;
}

.ticks {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
  color: var(--ink-soft);
  font-size: 16px;
  font-weight: 700;
}

.ticks li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.ticks .icon {
  color: var(--teal);
}

.hero__visual {
  position: relative;
  min-height: 640px;
}

.hero__backdrop {
  position: absolute;
  inset: 30px 0 20px 40px;
  border: 3px solid var(--ink);
  border-radius: 32px;
  background-color: var(--yellow);
}

.textbook-card {
  position: absolute;
  left: 0;
  top: 70px;
  width: 250px;
  padding: 22px 20px;
  border: 2px solid var(--ink);
  border-radius: 6px;
  background: #fbf7ee;
  box-shadow: 4px 5px 0 rgba(37, 32, 24, 0.25);
  color: var(--muted);
  font-family: var(--font-textbook);
  font-size: 11.5px;
  line-height: 1.5;
  text-align: justify;
  transform: rotate(-7deg);
}

.textbook-card__heading {
  margin-bottom: 6px;
  color: var(--ink);
  font-weight: 700;
  font-size: 13px;
  text-align: left;
}

.textbook-card__page {
  margin-top: 10px;
  font-size: 10px;
  text-align: right;
}

.hero__arrow {
  position: absolute;
  left: 150px;
  top: 300px;
  color: var(--ink);
}

.phone {
  position: absolute;
  right: 36px;
  top: 0;
  width: 300px;
  padding: 12px;
  border-radius: 46px;
  background: var(--ink);
  box-shadow: 8px 10px 0 rgba(37, 32, 24, 0.25);
}

.phone__screen {
  padding: 18px 16px 20px;
  border-radius: 36px;
  background: var(--cream);
  overflow: hidden;
}

.phone__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.phone__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 17px;
}

.phone__counter {
  padding: 2px 10px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--yellow);
  font-weight: 700;
  font-size: 12px;
}

.phone__panel {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border: 3px solid var(--ink);
  border-radius: 14px;
}

.phone__bubble {
  margin-top: 16px;
  font-size: 14.5px;
}

.phone__dots {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 16px;
}

.phone__dots span {
  width: 8px;
  height: 8px;
  border-radius: 99px;
  background: #d8ccb8;
}

.phone__dots .is-active {
  width: 22px;
  background: var(--ink);
}

.phone__next {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  margin-top: 14px;
  border: 2.5px solid var(--ink);
  border-radius: 999px;
  background: var(--yellow);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15px;
}

.hero__flip {
  position: absolute;
  left: 10px;
  bottom: -10px;
  width: 210px;
  height: 210px;
  object-fit: contain;
}

/* ---------- How it works ---------- */

.step {
  padding: 30px 28px 32px;
}

.step__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.step__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border: 3px solid var(--ink);
  border-radius: 50%;
  background: var(--yellow);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 26px;
}

.step h3 {
  margin: 26px 0 8px;
  font-size: 27px;
}

.step p,
.mode__body p,
.learn__items p,
.feature p {
  color: var(--ink-soft);
}

/* ---------- Before / after ---------- */

.tabs {
  display: none;
  border-radius: 999px;
  box-shadow: 3px 4px 0 var(--ink);
}

.js .tabs {
  display: inline-flex;
}

.tab {
  min-height: 48px;
  padding: 0 22px;
  border: 3px solid var(--ink);
  background: #fff;
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 17px;
  cursor: pointer;
}

.tab:first-child {
  border-radius: 999px 0 0 999px;
}

.tab:last-child {
  border-left: 0;
  border-radius: 0 999px 999px 0;
}

.tab.is-active {
  background: var(--ink);
  color: var(--yellow);
}

.textbook-page {
  margin-top: 48px;
  padding: 56px;
  border: 2px solid #cfc4b2;
  border-radius: 8px;
  background: #fbf7ee;
  color: var(--muted);
  font-family: var(--font-textbook);
  font-size: 17px;
  line-height: 1.7;
}

.textbook-page p + p {
  margin-top: 14px;
  text-align: justify;
}

.textbook-page__heading {
  color: var(--ink);
  font-weight: 700;
  font-size: 22px;
}

.textbook-page .textbook-page__footnote {
  margin-top: 28px;
  color: var(--ink);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 16px;
  text-align: left;
}

[data-tab-panel="comic"] > .grid-3 {
  margin-top: 48px;
}

.comic-panel {
  margin: 0;
  padding: 14px 14px 18px;
}

.comic-panel img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border: 2px solid var(--ink);
  border-radius: 10px;
}

.comic-panel .bubble {
  margin-top: 18px;
}

.example__extras {
  margin-top: 36px;
  align-items: stretch;
}

.key-facts {
  padding: 26px 28px;
  border-radius: var(--radius);
  background: var(--ink);
  color: var(--cream);
}

.key-facts h3 {
  margin-bottom: 12px;
  color: var(--yellow);
  font-size: 22px;
}

.key-facts ul {
  display: grid;
  gap: 6px;
  margin: 0;
  padding-left: 22px;
}

.quiz-card {
  padding: 26px 28px;
  border: 3px solid var(--ink);
  border-radius: var(--radius);
  background: #fff;
}

.quiz-card__label {
  margin-bottom: 6px;
  color: var(--teal-dark);
  font-weight: 700;
  font-size: 15px;
  text-transform: uppercase;
}

.quiz-card h3 {
  margin-bottom: 16px;
  font-size: 22px;
}

.quiz-card__options {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 16px;
}

.quiz-card__options li {
  padding: 10px 16px;
  border: 2px solid var(--ink);
  border-radius: 12px;
}

.quiz-card__options .is-correct {
  background: var(--teal-soft);
  font-weight: 700;
}

/* ---------- Modes ---------- */

.mode {
  overflow: hidden;
}

.mode__age {
  padding: 22px 28px;
  border-bottom: 3px solid var(--ink);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 46px;
  line-height: 1;
}

.mode__age span {
  font-size: 22px;
}

.mode__age--yellow {
  background: var(--yellow);
}

.mode__age--teal {
  background: var(--teal);
  color: #fff;
}

.mode__age--ink {
  background: var(--ink);
  color: var(--yellow);
}

.mode__body {
  padding: 24px 28px 30px;
}

.mode h3 {
  margin-bottom: 6px;
  font-size: 27px;
}

.mode .mode__panels {
  margin-bottom: 16px;
  color: var(--teal-dark);
  font-weight: 700;
  font-size: 16px;
}

/* ---------- Characters ---------- */

.guide {
  padding: 12px 12px 16px;
  text-align: center;
}

.guide img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: contain;
}

.guide__name {
  margin-top: 6px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 22px;
}

.guide__kind {
  color: var(--ink-soft);
  font-size: 15px;
}

.create-own {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 28px;
  margin-top: 32px;
  padding: 24px 28px;
}

.create-own__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 23px;
}

.create-own__steps {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-weight: 700;
  font-size: 16px;
}

.create-own__steps li {
  padding: 8px 16px;
  border: 2px solid var(--ink);
  border-radius: 999px;
  background: #fff;
}

.create-own__note {
  flex: 1 1 240px;
  color: var(--ink-soft);
  font-size: 16px;
}

.styles__title {
  margin-top: 80px;
  font-size: clamp(28px, 3.4vw, 40px);
}

.styles {
  margin-top: 28px;
}

.styles img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 3px solid var(--ink);
  border-radius: 14px;
}

.styles p {
  margin-top: 10px;
  font-weight: 700;
  text-align: center;
}

/* ---------- Languages ---------- */

.greetings {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 18px 16px;
  padding: 12px;
}

.greeting {
  font-family: var(--font-display);
  font-weight: 500;
}

.greeting--0 { font-size: 34px; font-weight: 600; transform: rotate(-4deg); background: var(--yellow); }
.greeting--1 { font-size: 26px; transform: rotate(3deg); }
.greeting--2 { font-size: 30px; transform: rotate(-2deg); }
.greeting--3 { font-size: 24px; transform: rotate(5deg); }
.greeting--4 { font-size: 28px; transform: rotate(-5deg); }
.greeting--5 { font-size: 26px; transform: rotate(2deg); background: var(--ink); color: var(--cream); }
.greeting--6 { font-size: 24px; transform: rotate(-3deg); }
.greeting--7 { font-size: 28px; transform: rotate(4deg); background: var(--teal-soft); }

.feature-list {
  display: grid;
  gap: 26px;
  margin-top: 34px;
}

.feature {
  display: flex;
  gap: 18px;
  align-items: flex-start;
}

.feature__icon {
  color: var(--teal);
}

.feature h3 {
  margin-bottom: 4px;
  font-size: 23px;
}

.feature p {
  font-size: 17px;
}

/* ---------- Learn ---------- */

.learn__visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.learn__circle {
  position: absolute;
  inset: 8% 6%;
  border: 3px solid var(--ink);
  border-radius: 50%;
  background-color: var(--teal-soft);
}

.learn__visual img {
  position: relative;
  width: 100%;
  max-width: 440px;
}

.learn__items {
  gap: 22px;
  margin-top: 36px;
  align-items: start;
}

.learn__items h3 {
  margin: 10px 0 4px;
  font-size: 22px;
}

.learn__items p {
  font-size: 17px;
}

/* ---------- Parents ---------- */

.section--ink .section__title {
  max-width: 860px;
}

.trust__item {
  padding: 28px;
  border: 2px solid rgba(255, 250, 243, 0.28);
  border-radius: var(--radius);
}

.trust__item h3 {
  margin: 14px 0 6px;
  font-size: 23px;
}

.trust__item p {
  font-size: 17px;
  opacity: 0.85;
}

/* ---------- Sign-up ---------- */

.signup {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
  padding: clamp(24px, 5vw, 64px);
}

.signup .section__title {
  font-size: clamp(34px, 4.2vw, 52px);
  line-height: 1.06;
}

.signup__lead {
  margin-top: 18px;
  color: var(--ink-soft);
  font-size: 19px;
}

.signup__perks-title {
  margin-top: 26px;
  color: var(--teal-dark);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.signup__perks {
  display: grid;
  gap: 12px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  font-weight: 700;
}

.signup__perks li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.signup__perks .icon {
  margin-top: 3px;
}

.signup__flip {
  width: 230px;
  height: 230px;
  margin: 18px 0 -20px -16px;
}

.signup-form {
  display: grid;
  gap: 26px;
}

.signup-form fieldset {
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.signup-form legend,
.field label {
  display: block;
  margin-bottom: 10px;
  padding: 0;
  font-weight: 700;
}

.beta-only {
  display: grid;
  gap: 26px;
}

.intent-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 12px;
}

.intent,
.chip {
  position: relative;
  cursor: pointer;
}

.intent input,
.chip input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.intent {
  display: block;
  padding: 14px 18px;
  border: 2.5px solid var(--ink);
  border-radius: 16px;
  background: #fff;
}

.intent:hover {
  background: var(--yellow-soft);
}

.intent__title {
  display: block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 20px;
}

.intent__sub {
  display: block;
  margin-top: 2px;
  color: var(--ink-soft);
  font-size: 15px;
}

.intent:has(input:checked),
.intent.is-checked {
  background: var(--yellow);
  box-shadow: 3px 4px 0 var(--ink);
}

.intent:has(input:checked) .intent__sub,
.intent.is-checked .intent__sub {
  color: var(--ink);
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip span {
  display: inline-flex;
  align-items: center;
  min-height: 46px;
  padding: 0 18px;
  border: 2px solid var(--ink);
  border-radius: 999px;
  background: #fff;
  font-weight: 700;
  font-size: 16px;
}

.chip:hover span {
  background: var(--yellow-soft);
}

.chip:has(input:checked) span,
.chip.is-checked span {
  background: var(--ink);
  color: var(--cream);
}

.intent:has(input:focus-visible),
.chip:has(input:focus-visible) span {
  outline: 3px solid var(--teal);
  outline-offset: 2px;
}

.hint,
.note {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  color: var(--ink-soft);
  font-size: 15px;
}

.hint .icon {
  margin-top: 3px;
}

.note {
  padding: 10px 14px;
  border-radius: 12px;
  background: var(--yellow-wash);
  color: var(--ink);
}

.input {
  width: 100%;
  min-height: 54px;
  padding: 0 18px;
  border: 2.5px solid var(--ink);
  border-radius: 14px;
  background: #fff;
  color: var(--ink);
  font: 400 18px var(--font-body);
}

select.input {
  appearance: none;
  padding-right: 48px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%23252018' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
}

.input[aria-invalid="true"] {
  border-color: var(--error-ink);
}

.hp {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.check {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 16px;
  cursor: pointer;
}

.check input {
  flex: none;
  width: 22px;
  height: 22px;
  margin: 2px 0 0;
  accent-color: var(--ink);
}

.form-error {
  margin-top: -8px;
  padding: 10px 14px;
  border-radius: 12px;
  background: var(--error-bg);
  color: var(--error-ink);
  font-weight: 700;
  font-size: 16px;
}

.signup-form__submit {
  justify-self: start;
}

.fine-print,
.noscript {
  margin-top: -6px;
  color: var(--muted);
  font-size: 15px;
}

.signup-success {
  padding: 36px 32px;
  border: 3px solid var(--ink);
  border-radius: var(--radius);
  background: var(--yellow-wash);
  text-align: center;
}

.signup-success__icon {
  margin: 0 auto;
  color: var(--teal-dark);
}

.signup-success__title {
  margin: 14px 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 32px;
}

.signup-success p:not(.signup-success__title) {
  color: var(--ink-soft);
  overflow-wrap: anywhere;
}

.chip-button {
  min-height: 46px;
  margin-top: 22px;
  padding: 0 18px;
  border: 2px solid var(--ink);
  border-radius: 999px;
  background: #fff;
  color: var(--ink);
  font: 700 16px var(--font-body);
  cursor: pointer;
}

.chip-button:hover {
  background: var(--yellow-soft);
}

/* ---------- FAQ ---------- */

.faq {
  border-bottom: 2px solid var(--line);
}

.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 21px;
  list-style: none;
  cursor: pointer;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq__chevron {
  transition: transform 0.2s;
}

.faq[open] .faq__chevron {
  transform: rotate(180deg);
}

.faq p {
  padding-bottom: 22px;
  color: var(--ink-soft);
}

#faq .section__title {
  margin-bottom: 24px;
}

/* ---------- Footer ---------- */

.site-footer {
  padding: 72px 0 40px;
  background: var(--ink);
  color: var(--cream);
  font-size: 16px;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 32px;
}

.site-footer__tagline {
  max-width: 320px;
  margin-top: 16px;
  opacity: 0.85;
}

.site-footer__title {
  margin-bottom: 14px;
  color: var(--yellow);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 18px;
}

.site-footer ul {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-footer a:not(.brand):not(.lang-switch__item) {
  color: var(--cream);
  opacity: 0.85;
  text-decoration: none;
}

.site-footer a:not(.brand):not(.lang-switch__item):hover {
  color: var(--yellow);
  opacity: 1;
  text-decoration: underline;
}

.lang-switch--footer {
  display: inline-flex;
  margin-top: 24px;
  border-color: rgba(255, 250, 243, 0.4);
  background: transparent;
}

.lang-switch--footer .lang-switch__item {
  color: var(--cream);
}

.lang-switch--footer .lang-switch__item.is-current {
  background: var(--yellow);
  color: var(--ink);
}

.lang-switch--footer a.lang-switch__item:hover {
  background: rgba(255, 250, 243, 0.12);
  color: var(--cream);
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  margin-top: 56px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 250, 243, 0.2);
  font-size: 14px;
  opacity: 0.7;
}

/* ---------- Documents (privacy notice, account deletion) ---------- */

.doc {
  padding: 72px 0 104px;
}

.doc__title {
  font-size: clamp(34px, 4.4vw, 52px);
  line-height: 1.08;
}

.doc__updated {
  margin-top: 12px;
  color: var(--muted);
  font-size: 15px;
}

.doc__intro {
  margin-top: 24px;
  font-size: 20px;
}

.doc section {
  margin-top: 40px;
}

.doc h2 {
  margin-bottom: 12px;
  font-size: 26px;
}

.doc p + p {
  margin-top: 12px;
}

.doc ul,
.doc ol {
  display: grid;
  gap: 8px;
  margin: 0 0 12px;
  padding-left: 24px;
}

.doc__steps li::marker {
  font-family: var(--font-display);
  font-weight: 700;
}

.doc__callout {
  display: flex;
  gap: 16px;
  padding: 24px;
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  background: var(--yellow-wash);
}

.doc__callout .icon {
  margin-top: 4px;
}

.not-found {
  padding: 96px 0 120px;
  text-align: center;
}

.not-found img {
  width: 240px;
  margin: 0 auto 24px;
}

.not-found p {
  margin: 16px 0 32px;
  font-size: 20px;
}

/* ---------- Sign-up confirmation ---------- */

.confirm {
  padding: 96px 0 120px;
  text-align: center;
}

.confirm__text {
  margin-top: 16px;
  font-size: 20px;
}

.confirm__error {
  margin-top: 24px;
  text-align: left;
}

.confirm__button {
  margin-top: 32px;
}

.confirm__again {
  margin-top: 8px;
}

.confirm .chip-button {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

/* ---------- Responsive ---------- */

@media (max-width: 1100px) {
  .site-nav {
    display: none;
  }
}

@media (max-width: 1000px) {
  .hero__grid,
  .grid-2,
  .signup {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero__visual {
    width: 100%;
    max-width: 560px;
    margin: 0 auto;
  }

  .grid-3.trust {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-6 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
  }

  .signup__flip {
    display: none;
  }
}

@media (max-width: 760px) {
  .grid-3,
  .grid-3.trust {
    grid-template-columns: minmax(0, 1fr);
  }

  /* The three example panels become a swipeable strip, like the app. */
  [data-tab-panel="comic"] > .grid-3 {
    display: flex;
    gap: 16px;
    margin-right: calc(-1 * var(--gutter));
    padding: 0 var(--gutter) 14px 0;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    overscroll-behavior-x: contain;
  }

  [data-tab-panel="comic"] > .grid-3 > .comic-panel {
    flex: 0 0 82%;
    scroll-snap-align: start;
  }
}

@media (max-width: 680px) {
  :root {
    --gutter: 16px;
  }

  body {
    font-size: 17px;
  }

  html {
    scroll-padding-top: 84px;
  }

  .section {
    padding: 72px 0;
  }

  .section--tight-top {
    padding-top: 24px;
  }

  .hero {
    padding: 40px 0 64px;
  }

  .hero__lead {
    font-size: 19px;
  }

  .btn {
    width: 100%;
  }

  .btn--small {
    width: auto;
    min-height: 44px;
    padding: 0 16px;
    font-size: 16px;
  }

  .site-header__inner {
    min-height: 64px;
    gap: 10px;
  }

  .brand img {
    width: 36px;
    height: 36px;
  }

  .brand__name {
    font-size: 22px;
  }

  .site-header .lang-switch {
    display: none;
  }

  .hero__visual {
    min-height: 540px;
  }

  .hero__backdrop {
    inset: 24px 0 16px 16px;
  }

  .textbook-card {
    top: 40px;
    width: 170px;
    padding: 14px 12px;
    font-size: 9px;
  }

  .textbook-card__heading {
    font-size: 11px;
  }

  .hero__arrow {
    display: none;
  }

  .phone {
    right: 8px;
    width: 240px;
    border-radius: 40px;
  }

  .phone__screen {
    padding: 14px 12px 16px;
    border-radius: 30px;
  }

  .phone__bubble {
    font-size: 13px;
  }

  .hero__flip {
    width: 150px;
    height: 150px;
    left: 0;
    bottom: -6px;
  }

  .textbook-page {
    padding: 28px 22px;
    font-size: 16px;
  }

  .grid-6 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-2 {
    gap: 32px;
  }

  .tabs {
    width: 100%;
  }

  .js .tabs {
    display: flex;
  }

  .tab {
    flex: 1;
    padding: 0 12px;
    font-size: 16px;
  }

  .mode__age {
    font-size: 40px;
  }

  .signup {
    padding: 24px 20px;
  }

  .site-footer__grid {
    grid-template-columns: 1fr;
  }

  .greetings {
    gap: 14px 10px;
  }

  .greeting {
    font-size: 20px !important;
  }

  .greeting--0 {
    font-size: 26px !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .btn,
  .faq__chevron {
    transition: none;
  }

  .btn:hover {
    transform: none;
  }
}