:root {
  --cream: #f8e8cf;
  --cream-light: #fff7ea;
  --surface: #fffaf2;
  --brown: #523a2b;
  --brown-soft: #80644f;
  --brown-muted: #9a8069;
  --border: #d8c3a7;
  --green: #a9b77a;
  --green-dark: #74804e;
  --green-light: #d8e2bc;
  --yellow: #f4c86c;
  --yellow-dark: #c69a41;
  --yellow-light: #fee9ad;
  --coral: #e98973;
  --coral-dark: #b95d4c;
  --coral-light: #ffd3c8;
  --blue: #8fa9c6;
  --blue-light: #dde8f3;
  --shadow: rgba(82, 58, 43, 0.16);
  --max-width: 1120px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--brown);
  background-color: var(--cream);
  background-image:
    radial-gradient(circle at 16% 12%, rgba(255, 255, 255, 0.52) 0 2px, transparent 3px),
    radial-gradient(circle at 80% 28%, rgba(166, 124, 83, 0.08) 0 1px, transparent 2px),
    linear-gradient(112deg, rgba(255, 255, 255, 0.2), transparent 38%, rgba(255, 255, 255, 0.13));
  background-size: 31px 31px, 27px 27px, 100% 100%;
  font-family: "Hiragino Sans", "Yu Gothic UI", "Yu Gothic", Meiryo, sans-serif;
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 16px;
  color: var(--brown);
  background: var(--surface);
  border-radius: 999px;
  transform: translateY(-180%);
}

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

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid rgba(216, 195, 167, 0.72);
  background: rgba(248, 232, 207, 0.9);
  backdrop-filter: blur(14px);
}

.header-inner,
.footer-inner,
.section-inner {
  width: min(calc(100% - 40px), var(--max-width));
  margin-inline: auto;
}

.header-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-size: 1.05rem;
  font-weight: 900;
  text-decoration: none;
  letter-spacing: 0.02em;
}

.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  color: var(--surface);
  background: var(--coral);
  border: 2px solid rgba(185, 93, 76, 0.42);
  border-radius: 15px 18px 14px 19px;
  box-shadow:
    inset 3px 3px 5px rgba(255, 255, 255, 0.46),
    inset -3px -4px 6px rgba(130, 64, 51, 0.18),
    0 5px 10px rgba(82, 58, 43, 0.14);
  font-size: 1.45rem;
  line-height: 1;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.site-nav a {
  color: var(--brown-soft);
  font-size: 0.86rem;
  font-weight: 800;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--coral-dark);
}

.hero {
  padding: 88px 0 96px;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.86fr);
  align-items: center;
  gap: clamp(48px, 8vw, 100px);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--coral-dark);
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

.hero h1 {
  max-width: 640px;
  margin-bottom: 24px;
  font-size: clamp(2.65rem, 6vw, 5.5rem);
  line-height: 1.08;
  letter-spacing: -0.045em;
}

.hero-lead {
  max-width: 610px;
  margin-bottom: 32px;
  color: var(--brown-soft);
  font-size: clamp(1rem, 2vw, 1.16rem);
  font-weight: 700;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.button {
  min-height: 54px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border: 1px solid var(--green-dark);
  border-radius: 18px 20px 16px 21px;
  box-shadow:
    inset 2px 3px 4px rgba(255, 255, 255, 0.42),
    inset -3px -4px 5px rgba(74, 87, 42, 0.15),
    0 7px 0 rgba(82, 58, 43, 0.12);
  font-weight: 900;
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
  box-shadow:
    inset 2px 3px 4px rgba(255, 255, 255, 0.42),
    inset -3px -4px 5px rgba(74, 87, 42, 0.15),
    0 9px 0 rgba(82, 58, 43, 0.12);
}

.button-primary {
  background: var(--green);
}

.button-secondary {
  background: var(--surface);
  border-color: var(--border);
}

.release-note {
  margin-top: 20px;
  color: var(--brown-muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.quiz-preview {
  position: relative;
  max-width: 430px;
  margin-inline: auto;
  padding: 27px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 36px 33px 39px 31px;
  box-shadow:
    inset 4px 5px 10px rgba(255, 255, 255, 0.75),
    inset -6px -8px 12px rgba(166, 121, 79, 0.08),
    0 24px 38px var(--shadow);
  transform: rotate(1.25deg);
}

.quiz-preview::after,
.clay-card::after,
.document-card::after {
  content: "";
  position: absolute;
  pointer-events: none;
  inset: 9px;
  border: 1px dashed rgba(128, 100, 79, 0.24);
  border-radius: inherit;
}

.quiz-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.quiz-label,
.quiz-count {
  color: var(--brown-soft);
  font-size: 0.7rem;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.quiz-count {
  padding: 7px 12px;
  background: var(--green-light);
  border-radius: 999px;
}

.foods {
  min-height: 176px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
  padding-top: 12px;
}

.food {
  width: 96px;
  height: 96px;
  display: grid;
  place-items: center;
  background: var(--cream-light);
  border-radius: 40% 52% 44% 50%;
  box-shadow:
    inset 6px 6px 10px rgba(255, 255, 255, 0.8),
    inset -6px -7px 10px rgba(130, 97, 66, 0.11),
    0 10px 13px rgba(82, 58, 43, 0.12);
  font-size: 3.4rem;
}

.food:nth-child(1) { transform: translateY(10px) rotate(-8deg); }
.food:nth-child(2) { z-index: 2; transform: translateY(-10px) rotate(3deg); }
.food:nth-child(3) { transform: translateY(13px) rotate(7deg); }

.quiz-question {
  margin: 2px 0 18px;
  font-size: 1.2rem;
  font-weight: 900;
  text-align: center;
}

.choices {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 9px;
}

.choice {
  padding: 13px 4px 10px;
  background: var(--yellow-light);
  border: 1px solid var(--yellow-dark);
  border-radius: 20px 18px 22px 17px;
  box-shadow: inset 2px 3px 3px rgba(255, 255, 255, 0.5), 0 5px 8px rgba(82, 58, 43, 0.1);
  font-size: 1.25rem;
  font-weight: 900;
  text-align: center;
}

.choice:nth-child(1) { background: var(--green-light); border-color: var(--green-dark); }
.choice:nth-child(3) { background: var(--coral-light); border-color: var(--coral); }

.choice small {
  display: block;
  margin-top: -5px;
  font-size: 0.64rem;
}

.section {
  padding: 88px 0;
}

.section-tint {
  background: rgba(255, 247, 234, 0.62);
  border-block: 1px solid rgba(216, 195, 167, 0.6);
}

.section-heading {
  max-width: 720px;
  margin: 0 auto 44px;
  text-align: center;
}

.section-heading h2 {
  margin-bottom: 12px;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.25;
  letter-spacing: -0.035em;
}

.section-heading p {
  color: var(--brown-soft);
  font-weight: 700;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.clay-card,
.info-link,
.document-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 28px 25px 31px 24px;
  box-shadow:
    inset 3px 4px 7px rgba(255, 255, 255, 0.68),
    inset -4px -5px 8px rgba(130, 97, 66, 0.06),
    0 12px 20px rgba(82, 58, 43, 0.1);
}

.clay-card {
  min-height: 260px;
  padding: 38px 32px 32px;
}

.card-number {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  margin-bottom: 25px;
  background: var(--yellow);
  border-radius: 19px 22px 17px 21px;
  box-shadow: inset 3px 3px 5px rgba(255, 255, 255, 0.5), 0 6px 10px rgba(82, 58, 43, 0.12);
  font-size: 1.1rem;
  font-weight: 900;
}

.clay-card:nth-child(2) .card-number { background: var(--green); }
.clay-card:nth-child(3) .card-number { background: var(--coral); }

.clay-card h3 {
  margin-bottom: 10px;
  font-size: 1.24rem;
}

.clay-card p {
  margin-bottom: 0;
  color: var(--brown-soft);
  font-size: 0.93rem;
  font-weight: 700;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.info-link {
  min-height: 126px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 27px 30px;
  text-decoration: none;
  transition: transform 160ms ease;
}

.info-link:hover {
  transform: translateY(-3px);
}

.info-link strong {
  display: block;
  margin-bottom: 2px;
  font-size: 1.08rem;
}

.info-link span {
  color: var(--brown-muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.info-arrow {
  color: var(--coral-dark) !important;
  font-size: 1.7rem !important;
}

.page-hero {
  padding: 72px 0 42px;
  text-align: center;
}

.page-hero h1 {
  margin-bottom: 14px;
  font-size: clamp(2.3rem, 6vw, 4.2rem);
  line-height: 1.18;
  letter-spacing: -0.04em;
}

.page-hero p:last-child {
  max-width: 700px;
  margin-inline: auto;
  color: var(--brown-soft);
  font-weight: 700;
}

.document-wrap {
  width: min(calc(100% - 40px), 880px);
  margin: 0 auto;
  padding-bottom: 100px;
}

.document-card {
  padding: clamp(30px, 6vw, 64px);
}

.document-card::after {
  inset: 13px;
}

.document-card > * {
  position: relative;
  z-index: 1;
}

.document-meta {
  margin-bottom: 36px;
  padding-bottom: 22px;
  color: var(--brown-muted);
  border-bottom: 1px solid var(--border);
  font-size: 0.84rem;
  font-weight: 700;
}

.document-card section + section {
  margin-top: 42px;
}

.document-card h2 {
  margin-bottom: 12px;
  font-size: 1.3rem;
  line-height: 1.5;
}

.document-card h3 {
  margin: 26px 0 8px;
  font-size: 1.02rem;
}

.document-card p,
.document-card li {
  color: var(--brown-soft);
  font-weight: 600;
}

.document-card ul,
.document-card ol {
  padding-left: 1.45em;
}

.document-card li + li {
  margin-top: 8px;
}

.notice {
  margin: 28px 0;
  padding: 20px 22px;
  background: var(--yellow-light);
  border: 1px solid var(--yellow);
  border-radius: 18px;
}

.notice.coral {
  background: var(--coral-light);
  border-color: var(--coral);
}

.notice p:last-child {
  margin-bottom: 0;
}

.contact-button {
  margin: 14px 0 18px;
}

.site-footer {
  padding: 44px 0;
  color: var(--brown-soft);
  border-top: 1px solid rgba(216, 195, 167, 0.72);
  background: rgba(255, 247, 234, 0.52);
}

.footer-inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 30px;
}

.footer-name {
  margin-bottom: 4px;
  color: var(--brown);
  font-weight: 900;
}

.copyright {
  margin-bottom: 0;
  font-size: 0.8rem;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px 20px;
}

.footer-nav a {
  font-size: 0.78rem;
  font-weight: 800;
}

@media (max-width: 820px) {
  .site-nav {
    display: none;
  }

  .hero {
    padding-top: 58px;
  }

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

  .hero-copy {
    text-align: center;
  }

  .hero-lead {
    margin-inline: auto;
  }

  .button-row {
    justify-content: center;
  }

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

  .clay-card {
    min-height: 0;
  }
}

@media (max-width: 620px) {
  body {
    font-size: 15px;
  }

  .header-inner,
  .footer-inner,
  .section-inner {
    width: min(calc(100% - 28px), var(--max-width));
  }

  .header-inner {
    min-height: 66px;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
  }

  .hero {
    padding: 48px 0 68px;
  }

  .hero h1 {
    font-size: clamp(2.5rem, 15vw, 4rem);
  }

  .quiz-preview {
    padding: 22px 18px;
    border-radius: 28px;
  }

  .foods {
    min-height: 150px;
  }

  .food {
    width: 78px;
    height: 78px;
    font-size: 2.8rem;
  }

  .choice {
    font-size: 1.06rem;
  }

  .section {
    padding: 66px 0;
  }

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

  .info-link {
    min-height: 108px;
    padding: 24px;
  }

  .page-hero {
    padding: 52px 0 28px;
  }

  .document-wrap {
    width: min(calc(100% - 24px), 880px);
  }

  .document-card {
    padding: 34px 25px;
    border-radius: 24px;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-nav {
    justify-content: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}