:root {
  --bg: #dbc9a8;
  --bg-elevated: #cdb890;
  --surface: #e8d5b5;
  --surface-raised: #f2e6d0;
  --border: #8b6848;
  --border-strong: #6b4c32;
  --text: #3d2817;
  --text-muted: #5c4030;
  --text-dim: #8a7058;
  --accent: #a85c38;
  --accent-soft: #e8d0b8;
  --teal: #6a9080;
  --shadow: #4a3020;
  --max: 42rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", Georgia, serif;
  color: var(--text);
  background:
    radial-gradient(ellipse 80% 50% at 20% 0%, rgba(196, 120, 72, 0.18), transparent 55%),
    radial-gradient(ellipse 70% 45% at 90% 10%, rgba(106, 144, 128, 0.16), transparent 50%),
    linear-gradient(165deg, #e4d4b8 0%, var(--bg) 45%, #d0ba96 100%);
  line-height: 1.7;
}

a {
  color: var(--accent);
  text-underline-offset: 0.15em;
}

a:hover {
  color: var(--border-strong);
}

.wrap {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
  padding: 2.5rem 0 4rem;
}

header.site {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.brand {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text);
  text-decoration: none;
}

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

nav.site {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.1rem;
  font-size: 0.92rem;
}

nav.site a {
  color: var(--text-muted);
  text-decoration: none;
}

nav.site a:hover,
nav.site a[aria-current="page"] {
  color: var(--accent);
  text-decoration: underline;
}

.hero {
  margin-bottom: 2rem;
}

.hero h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  line-height: 1.25;
  letter-spacing: 0.02em;
}

.hero .lead {
  margin: 0;
  font-size: 1.05rem;
  color: var(--text-muted);
}

.swatches {
  display: flex;
  gap: 0.45rem;
  margin: 1.25rem 0 0;
}

.swatches span {
  width: 1.35rem;
  height: 1.35rem;
  border-radius: 0.25rem;
  border: 1px solid rgba(61, 40, 23, 0.25);
  box-shadow: 0 2px 0 rgba(74, 48, 32, 0.15);
}

.panel {
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: 0.65rem;
  padding: 1.25rem 1.35rem;
  margin-bottom: 1.15rem;
  box-shadow: 0 3px 0 rgba(74, 48, 32, 0.12);
}

.panel h2 {
  margin: 0 0 0.65rem;
  font-size: 1.15rem;
}

.panel h3 {
  margin: 1rem 0 0.4rem;
  font-size: 1rem;
}

.panel p,
.panel ul {
  margin: 0 0 0.75rem;
  color: var(--text-muted);
}

.panel ul {
  padding-left: 1.25rem;
}

.panel li + li {
  margin-top: 0.3rem;
}

.panel .note {
  font-size: 0.88rem;
  color: var(--text-dim);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.btn {
  display: inline-block;
  padding: 0.65rem 1.15rem;
  border-radius: 0.45rem;
  border: 1px solid var(--border-strong);
  background: var(--accent);
  color: #faf3e8;
  text-decoration: none;
  font-weight: 700;
  box-shadow: 0 2px 0 rgba(74, 48, 32, 0.25);
}

.btn:hover {
  color: #fff;
  filter: brightness(1.06);
}

.btn.secondary {
  background: var(--surface);
  color: var(--text);
}

.btn.secondary:hover {
  color: var(--accent);
}

footer.site {
  margin-top: 2.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--text-dim);
}

footer.site p {
  margin: 0.25rem 0;
}