:root {
  color-scheme: light;
  --ink: #46373d;
  --muted: #76686c;
  --deep: #7d4b56;
  --line: rgba(125, 75, 86, 0.18);
  --paper: #fffdf9;
  --soft: #f7eee7;
  --green: #dfe9df;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background: linear-gradient(180deg, #fffdf9, #f7eee7 58%, #eef5ef);
  font-family: "Yu Gothic", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  line-height: 1.8;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 16px clamp(18px, 5vw, 64px);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 253, 249, 0.9);
  backdrop-filter: blur(16px);
}

.brand {
  color: var(--deep);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 22px;
  font-weight: 700;
  text-decoration: none;
}

.site-nav,
.hero-actions,
.link-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.site-nav a,
.button,
.link-grid a {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 253, 249, 0.86);
  color: var(--deep);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.site-nav a {
  padding: 8px 12px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.8fr);
  gap: clamp(28px, 6vw, 72px);
  align-items: center;
  min-height: 74vh;
  padding: clamp(56px, 8vw, 112px) clamp(18px, 6vw, 84px);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--deep);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 24px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(42px, 7vw, 84px);
  line-height: 1.08;
  letter-spacing: 0;
}

.lead {
  max-width: 680px;
  color: var(--muted);
  font-size: clamp(16px, 2vw, 19px);
}

.button {
  display: inline-flex;
  padding: 12px 18px;
}

.button-primary {
  background: var(--deep);
  color: #fff;
}

.visual-stack {
  display: grid;
  gap: 16px;
}

.visual-stack img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 22px 54px rgba(70, 55, 61, 0.14);
}

.visual-stack img + img {
  width: 72%;
  margin-left: auto;
  aspect-ratio: 1 / 1;
}

.content-band,
.link-panel {
  margin: 0 auto clamp(28px, 5vw, 64px);
  padding: clamp(34px, 5vw, 64px);
  width: min(1120px, calc(100% - 36px));
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 253, 249, 0.9);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 28px;
}

.section-heading h2,
.link-panel h2 {
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1.22;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.feature-grid article {
  min-width: 0;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(247, 238, 231, 0.86), rgba(223, 233, 223, 0.48));
}

.feature-grid h3 {
  margin-bottom: 8px;
  font-size: 20px;
}

.feature-grid p {
  color: var(--muted);
  font-size: 14px;
}

.link-grid a {
  padding: 12px 16px;
}

@media (max-width: 820px) {
  .site-header,
  .hero {
    align-items: flex-start;
  }

  .site-header,
  .hero,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .site-header {
    flex-direction: column;
  }

  .visual-stack img + img {
    width: 100%;
  }
}