@font-face {
  font-family: "Huninn";
  src: url("/assets/fonts/Huninn-Regular.ttf") format("truetype");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "Potta One";
  src: url("/assets/fonts/PottaOne-Regular.ttf") format("truetype");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

:root {
  --brand-green: #9ec325;
  --brand-pink: #fdb4cb;
  --brand-navy: #3a3661;
  --brand-orange: #e08335;
  --brand-purple: #cb9ae6;
  --brand-ink: #2f2f2f;
  --color-background: #fff8e6;
  --color-surface: #fff;
  --color-heading: var(--brand-orange);
  --color-hero-heading: var(--brand-orange);
  --color-section-heading: var(--brand-green);
  --color-body: var(--brand-ink);
  --color-muted: var(--brand-navy);
  --color-accent: var(--brand-green);
  --color-border: var(--brand-purple);
  --color-link: var(--brand-navy);
  --font-body: "Huninn", -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang TC", "Noto Sans TC", sans-serif;
  --font-display: "Potta One", var(--font-body);
  --site-shell-width: 72rem;
  --site-content-width: 68rem;
  --hero-shell-width: 58rem;
  --reading-shell-width: 52rem;
  --reading-content-width: 48rem;
  --page-inline-padding: clamp(1rem, 2.5vw, 2rem);
  --section-space: clamp(4rem, 9vw, 7.5rem);
  --section-space-end: calc(var(--section-space) * 1.2);
  --wave-overlap-standard: min(5.1%, 4.5625rem);
  --radius: 1.25rem;
  --cta-border-radius: 0.75rem;
}

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

html {
  color-scheme: light;
}

body {
  min-width: 0;
  min-height: 100vh;
  margin: 0;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background: var(--color-background);
  color: var(--color-body);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--color-link);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.2em;
}

a:hover {
  text-decoration-thickness: 0.14em;
}

a:focus-visible {
  outline: 3px solid var(--color-link);
  outline-offset: 4px;
  border-radius: 0.25rem;
}

p {
  margin: 0.75rem 0;
}

.skip-link {
  position: fixed;
  z-index: 10;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.5rem 0.75rem;
  transform: translateY(-200%);
  background: var(--color-body);
  color: var(--color-surface);
  border-radius: 0.35rem;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-shell,
.site-header__inner,
.site-footer__inner {
  width: min(100%, var(--site-shell-width));
  margin-inline: auto;
  padding-inline: var(--page-inline-padding);
}

.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-background);
}

.site-header__inner {
  width: min(100%, var(--hero-shell-width));
  min-height: 5.25rem;
  padding-block: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(0.5rem, 2vw, 1.5rem);
}

.site-logo-link {
  flex: 0 1 7.7rem;
}

.site-logo {
  width: 7.7rem;
  height: auto;
}

.site-header__nav {
  flex: none;
  display: flex;
  align-items: center;
  gap: clamp(0.5rem, 2vw, 1.25rem);
  white-space: nowrap;
}

.site-header__contact {
  flex: none;
  padding: 0.4rem 0;
  color: var(--color-heading);
  font-size: 1.125rem;
  font-weight: 700;
  text-decoration: none;
}

.site-header__contact:hover {
  opacity: 0.75;
}

.app-store-cta {
  min-height: 2.75rem;
  padding: 0.65rem clamp(0.7rem, 1.8vw, 1rem);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--brand-pink);
  color: var(--color-background);
  border-radius: var(--cta-border-radius);
  font-size: clamp(0.875rem, 1.6vw, 1rem);
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
}

.app-store-cta:hover {
  opacity: 0.82;
  text-decoration: none;
}

.app-store-cta:active {
  opacity: 0.68;
}

.app-store-cta:focus-visible {
  border-radius: var(--cta-border-radius);
}

.app-store-cta--hero {
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
  padding: clamp(0.85rem, 1.5vw, 1.05rem)
    clamp(1.75rem, 4vw, 2.75rem);
  font-size: clamp(1.125rem, 2vw, 1.4rem);
}

.site-main {
  flex: 1;
}

.section {
  padding-block-start: var(--section-space);
  padding-block-end: var(--section-space);
  background: var(--section-background);
}

.home-page .section {
  padding-block-end: var(--section-space-end);
}

.home-page .section-before-wave {
  padding-block-end: calc(
    var(--section-space-end) + var(--wave-overlap-standard)
  );
}

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

.section--white {
  --section-background: var(--color-surface);
}

.section--green {
  --section-background: var(--brand-green);
  --section-heading-color: var(--color-background);
  --section-copy-color: var(--color-background);
}

.section--pink {
  --section-background: var(--brand-pink);
  --section-heading-color: var(--color-background);
  --section-copy-color: var(--color-background);
}

.home-page .section-with-wave {
  --wave-overlap: var(--wave-overlap-standard);

  position: relative;
  z-index: 1;
  display: grid;
  overflow: visible;
  background: transparent;
}

.home-page .section-wave {
  position: relative;
  z-index: 1;
  width: 100%;
  aspect-ratio: 1440 / 84;
  margin-top: calc(-1 * var(--wave-overlap));
  margin-bottom: -1px;
  pointer-events: none;
}

.home-page .section-wave__shape {
  position: absolute;
  inset: 0;
  display: block;
  background: var(--section-background);
  -webkit-mask-image: url("/assets/images/section-wave.svg");
  -webkit-mask-position: center;
  -webkit-mask-repeat: no-repeat;
  -webkit-mask-size: 100% 100%;
  mask-image: url("/assets/images/section-wave.svg");
  mask-position: center;
  mask-repeat: no-repeat;
  mask-size: 100% 100%;
}

.home-page .section-wave__body {
  position: relative;
  z-index: 0;
  background: var(--section-background);
}

.home-page .section-wave--left-high .section-wave__shape {
  transform: none;
}

.home-page .section-wave--right-high .section-wave__shape {
  transform: scaleX(-1);
}

.display-heading {
  margin: 0;
  color: var(--color-heading);
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.28;
  letter-spacing: 0.01em;
  text-wrap: balance;
}

.section-heading {
  color: var(--section-heading-color, var(--color-section-heading));
  font-size: clamp(2.35rem, 5vw, 4rem);
}

.body-copy {
  color: var(--section-copy-color, var(--color-muted));
  font-size: clamp(1.08rem, 2vw, 1.25rem);
  line-height: 1.8;
}

.hero {
  --section-background: var(--color-background);

  min-height: clamp(30rem, 60vw, 52rem);
  padding-top: clamp(2.5rem, 7vw, 5.5rem);
  display: grid;
  grid-template-rows: 1fr;
  background: var(--section-background);
}

.hero__inner {
  width: min(100%, var(--hero-shell-width));
  align-self: stretch;
  display: grid;
  align-items: start;
  gap: clamp(2rem, 5vw, 5rem);
}

.hero__copy {
  max-width: 30rem;
}

.hero__heading {
  max-width: 8em;
  color: var(--color-hero-heading);
  font-size: clamp(3rem, 6.2vw, 5.75rem);
}

.hero__heading-line {
  display: block;
  white-space: nowrap;
}

.hero__supporting {
  max-width: 23em;
  margin: 1.25rem 0 0;
  color: var(--color-muted);
  font-size: clamp(1.2rem, 2.2vw, 1.55rem);
  line-height: 1.65;
}

.hero__visual {
  align-self: end;
  width: 100%;
  margin: 0;
}

.hero__image {
  width: 100%;
  max-width: none;
  height: auto;
}

.feature__inner {
  display: grid;
  align-items: center;
  gap: clamp(2.5rem, 5vw, 4rem);
}

.feature__copy {
  width: min(100%, 34rem);
}

.feature__copy .body-copy {
  margin: 1.25rem 0 0;
}

.feature__visual {
  display: grid;
  place-items: center;
  min-width: 0;
  margin: 0;
}

.feature__screenshot img {
  width: min(100%, 15.4rem);
  height: auto;
}

.outcomes .section-heading,
.faq .section-heading {
  text-align: center;
}

.outcomes__intro {
  max-width: 38rem;
  margin: 1.25rem auto 0;
  text-align: center;
}

.learning-grid {
  max-width: calc(var(--site-content-width) - 12rem);
  margin: clamp(2rem, 5vw, 3.5rem) auto 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(1rem, 2.5vw, 1.75rem);
  list-style: none;
}

.learning-grid li {
  min-height: 12rem;
  padding: clamp(1.5rem, 3vw, 2.25rem);
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  align-content: center;
  column-gap: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-background);
}

.learning-grid li::before {
  width: 1.75rem;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  grid-row: 1 / span 2;
  align-self: start;
  content: "✓";
  border-radius: 50%;
  background: var(--color-accent);
  color: var(--brand-navy);
  font-size: 0.9rem;
  line-height: 1;
}

.learning-grid strong,
.learning-grid span {
  grid-column: 2;
  display: block;
}

.learning-grid strong {
  color: var(--color-muted);
  font-size: clamp(1.12rem, 2vw, 1.3rem);
  font-weight: 700;
}

.learning-grid span {
  margin-top: 0.15rem;
}

.faq-list {
  max-width: var(--reading-content-width);
  margin: clamp(2rem, 5vw, 3.5rem) auto 0;
}

.faq-item {
  border-top: 1px solid var(--color-border);
}

.faq-item:last-child {
  border-bottom: 1px solid var(--color-border);
}

.faq-item__question {
  padding-block: 1.35rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 1.25rem;
  color: var(--color-muted);
  cursor: pointer;
  font-size: clamp(1.15rem, 2vw, 1.3rem);
  font-weight: 400;
  line-height: 1.5;
  list-style: none;
}

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

.faq-item__question::after {
  width: 2rem;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  content: "+";
  border-radius: 50%;
  background: var(--brand-pink);
  color: var(--brand-navy);
  font-family: var(--font-body);
  font-size: 1.4rem;
  line-height: 1;
}

.faq-item[open] .faq-item__question::after {
  content: "−";
  background: var(--brand-purple);
}

.faq-item__question:focus-visible {
  outline: 3px solid var(--color-link);
  outline-offset: 4px;
  border-radius: 0.25rem;
}

.faq-item__answer {
  padding: 0 3.25rem 1.5rem 0;
}

.faq-item__answer p {
  margin: 0;
}

.document {
  width: min(100%, var(--reading-shell-width));
  margin-inline: auto;
  padding-inline: var(--page-inline-padding);
  padding-block: clamp(3.5rem, 8vw, 6rem);
}

.document h1 {
  color: var(--color-section-heading);
  font-size: clamp(2.75rem, 6vw, 4rem);
}

.document h2 {
  margin: 2.75rem 0 0.6rem;
  color: var(--color-muted);
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  font-weight: 400;
  line-height: 1.45;
  text-wrap: balance;
}

.document li::marker {
  color: var(--color-heading);
}

.lead {
  max-width: 34rem;
  color: var(--color-muted);
  font-size: clamp(1.125rem, 3vw, 1.35rem);
}

.updated-date {
  margin-top: 0.5rem;
  color: var(--color-muted);
}

.contact-card {
  margin-block: 2.5rem;
  padding: clamp(1.25rem, 4vw, 1.75rem);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  border-radius: var(--radius);
}

.contact-card h2 {
  margin-top: 0;
}

code {
  overflow-wrap: anywhere;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.95em;
}

.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--color-border);
  background: var(--brand-green);
  color: var(--color-background);
}

.home-page .site-footer {
  border-top: 0;
}

.site-footer__inner {
  min-height: 9rem;
  padding-block: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.site-footer__copyright {
  margin: 0;
  line-height: 1.55;
}

.site-footer__copyright span {
  display: block;
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
}

.site-footer__links a {
  padding-block: 0.5rem;
  color: inherit;
  text-decoration: none;
}

@media (min-width: 56rem) {
  .hero__inner {
    grid-template-columns: minmax(0, 42rem) minmax(0, 1fr);
    gap: 0;
  }

  .hero__copy {
    width: 100%;
    max-width: none;
    grid-area: 1 / 1;
    z-index: 2;
    align-self: start;
    justify-self: start;
    padding-top: clamp(0.5rem, 2vw, 2rem);
  }

  .hero__visual {
    grid-area: 1 / 1 / 2 / -1;
    z-index: 1;
    align-self: end;
    justify-self: center;
    width: min(
      130%,
      calc(100vw - var(--page-inline-padding) - var(--page-inline-padding))
    );
    max-width: none;
  }

  .feature__inner {
    grid-template-columns: minmax(0, 34rem) minmax(0, 15.4rem);
    justify-content: center;
  }

  .feature--visual-first .feature__inner {
    grid-template-columns: minmax(0, 15.4rem) minmax(0, 34rem);
  }

  .feature--visual-first .feature__visual {
    grid-column: 1;
    grid-row: 1;
  }

  .feature--visual-first .feature__copy {
    grid-column: 2;
    grid-row: 1;
  }
}

@media (max-width: 40rem) {
  :root {
    --section-space: 3.75rem;
  }

  .site-header__inner {
    min-height: 4.5rem;
  }

  .site-logo-link,
  .site-logo {
    width: 6.3rem;
  }

  .site-logo-link {
    flex-basis: 6.3rem;
  }

  .site-header__contact {
    font-size: 1rem;
  }

  .home-page .benefits {
    --wave-overlap: 2.9167%;
  }

  .hero {
    min-height: auto;
    padding-top: 3rem;
  }

  .hero__inner {
    align-self: start;
    grid-template-rows: auto auto;
  }

  .hero__heading {
    font-size: clamp(2rem, 11.5vw, 3rem);
  }

  .hero__visual {
    aspect-ratio: 800 / 291;
    overflow: hidden;
  }

  .hero__image {
    height: 100%;
    object-fit: cover;
    object-position: center bottom;
  }

  .learning-grid {
    grid-template-columns: 1fr;
  }

  .learning-grid li {
    min-height: 10rem;
  }

  .site-footer__inner {
    min-height: 0;
    align-items: flex-start;
    flex-direction: column;
    gap: 1rem;
  }

  .site-footer__links {
    width: 100%;
    gap: 0.25rem 1.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
  }
}