:root {
  --bg: #f5efe4;
  --surface: rgba(255, 250, 240, 0.72);
  --surface-strong: #fffaf0;
  --text: #1f1b16;
  --muted: #665d52;
  --accent: #cb6b2f;
  --accent-dark: #8a4318;
  --line: rgba(31, 27, 22, 0.12);
  --shadow: 0 24px 60px rgba(74, 49, 25, 0.12);
  --radius: 28px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255, 214, 153, 0.7), transparent 28%),
    radial-gradient(circle at 85% 15%, rgba(250, 191, 143, 0.55), transparent 22%),
    linear-gradient(180deg, #fbf6ee 0%, #f2e7d6 100%);
  font-family: "Hiragino Sans", "Noto Sans JP", sans-serif;
}

a {
  color: inherit;
}

.site-shell,
.document-shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 48px;
}

.hero,
.document,
.spotlight,
.links-section {
  backdrop-filter: blur(14px);
}

.hero {
  min-height: calc(100svh - 48px);
  display: grid;
  align-content: space-between;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 10px);
  background:
    linear-gradient(135deg, rgba(255, 248, 235, 0.94), rgba(255, 238, 214, 0.7)),
    linear-gradient(180deg, rgba(255, 255, 255, 0.1), transparent);
  box-shadow: var(--shadow);
}

.nav,
.doc-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  color: var(--muted);
}

.nav-links a {
  text-decoration: none;
}

.hero-copy {
  max-width: 640px;
  padding: 48px 0 24px;
  animation: rise 0.8s ease-out both;
}

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

.hero-notes {
  margin-top: 18px;
}

.hero-notes span {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.42);
  color: var(--muted);
  font-size: 0.92rem;
}

.eyebrow,
.section-label,
.doc-meta {
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.8rem;
}

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

h1 {
  margin-bottom: 18px;
  font-size: clamp(3rem, 8vw, 5.8rem);
  line-height: 0.95;
  letter-spacing: -0.05em;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(1.9rem, 4vw, 3rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.1rem;
}

.lead,
.document p,
.document li,
.spotlight p {
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.8;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  text-decoration: none;
  transition: transform 180ms ease, background-color 180ms ease;
}

.button:hover,
.info-link:hover {
  transform: translateY(-2px);
}

.button.primary {
  background: var(--text);
  color: #fff8ef;
}

.button.secondary {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.45);
}

.section {
  padding: 56px 0 0;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 20px;
}

.section-copy {
  max-width: 420px;
  color: var(--muted);
  line-height: 1.8;
}

.about-copy {
  max-width: 520px;
  color: var(--muted);
  line-height: 1.9;
}

.section-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 28px;
}

.feature-list {
  display: grid;
  gap: 16px;
}

.feature-list article,
.spotlight,
.info-link,
.document,
.portfolio-card {
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.feature-list article {
  padding: 22px;
  border-radius: 22px;
}

.portfolio-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 16px;
}

.links-section {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding-top: 20px;
}

.portfolio-card {
  display: block;
  padding: 28px;
  border-radius: 28px;
  text-decoration: none;
  transition: transform 180ms ease, border-color 180ms ease;
}

.portfolio-card.featured {
  background:
    linear-gradient(135deg, rgba(255, 250, 240, 0.94), rgba(255, 239, 219, 0.8)),
    var(--surface);
}

.portfolio-card:hover {
  transform: translateY(-2px);
}

.placeholder-card {
  background: rgba(255, 249, 239, 0.52);
}

.card-kicker {
  display: inline-flex;
  margin-bottom: 16px;
  color: var(--accent-dark);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.78rem;
}

.portfolio-card strong {
  display: block;
  margin-bottom: 12px;
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  line-height: 1.1;
  letter-spacing: -0.04em;
}

.portfolio-card p,
.card-link {
  color: var(--muted);
}

.card-link {
  display: inline-flex;
  margin-top: 18px;
  font-weight: 700;
}

.muted-link {
  color: var(--accent-dark);
  opacity: 0.7;
}

.info-link {
  display: block;
  padding: 24px;
  border-radius: 24px;
  text-decoration: none;
  transition: transform 180ms ease, border-color 180ms ease;
}

.info-link span {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.info-link strong {
  font-size: 1.2rem;
  line-height: 1.4;
}

.document {
  max-width: 880px;
  margin: 28px auto 0;
  padding: 40px 28px;
  border-radius: 30px;
}

.document h1 {
  font-size: clamp(2.5rem, 6vw, 4.4rem);
  margin-bottom: 8px;
}

.document h2 {
  margin-top: 36px;
  font-size: 1.4rem;
}

.document ul {
  padding-left: 1.2rem;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 820px) {
  .site-shell,
  .document-shell {
    width: min(100% - 20px, 1120px);
    padding-top: 10px;
  }

  .hero {
    min-height: auto;
    padding: 20px;
  }

  .nav,
  .doc-nav,
  .section-grid,
  .portfolio-grid,
  .links-section {
    grid-template-columns: 1fr;
    display: grid;
  }

  .section-heading {
    display: grid;
  }

  .nav,
  .doc-nav {
    justify-content: stretch;
  }

  .nav-links {
    gap: 12px;
  }

  .hero-copy {
    padding-top: 24px;
  }

  .document {
    padding: 28px 20px;
  }
}