:root {
  color-scheme: light;
  --ink: #2a160c;
  --muted: #6f6259;
  --paper: #fffaf0;
  --panel: rgba(255, 255, 255, 0.9);
  --line: rgba(66, 42, 25, 0.14);
  --accent: #2f6f5f;
  --accent-dark: #214e42;
  --cream: #f7e4bc;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: radial-gradient(circle at 20% 10%, #fff5d9 0, transparent 34%),
    radial-gradient(circle at 80% 18%, #dfeee8 0, transparent 30%),
    linear-gradient(135deg, #fffaf0 0%, #f8efe0 52%, #e6f1eb 100%);
}

body {
  min-height: 100%;
  margin: 0;
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic",
    "YuGothic", "Noto Sans JP", sans-serif;
  line-height: 1.75;
}

a {
  color: var(--accent-dark);
  font-weight: 700;
}

.site-shell {
  width: min(1080px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 56px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 16px 0 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand-icon {
  width: 58px;
  height: 58px;
  object-fit: contain;
  filter: drop-shadow(0 8px 18px rgba(42, 22, 12, 0.14));
}

.brand-logo {
  width: min(250px, 52vw);
  height: auto;
  display: block;
}

.nav {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav a {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 14px;
  text-decoration: none;
  background: rgba(255, 255, 255, 0.62);
}

.hero {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 34px;
  align-items: center;
  padding: 42px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--panel);
  box-shadow: 0 24px 80px rgba(42, 22, 12, 0.12);
}

.hero h1,
.page h1 {
  margin: 0 0 14px;
  font-size: clamp(2rem, 5vw, 4.2rem);
  line-height: 1.1;
  letter-spacing: 0;
}

.hero p {
  margin: 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 2.3vw, 1.28rem);
}

.hero-card {
  border-radius: 24px;
  padding: 28px;
  background: linear-gradient(180deg, #fff5da, #fffdf7);
  border: 1px solid var(--line);
}

.hero-card img {
  width: 100%;
  max-height: 280px;
  object-fit: contain;
  display: block;
  filter: drop-shadow(0 18px 34px rgba(42, 22, 12, 0.14));
}

.page {
  padding: 40px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--panel);
  box-shadow: 0 24px 80px rgba(42, 22, 12, 0.12);
}

.lead {
  max-width: 760px;
  color: var(--muted);
  font-size: 1.08rem;
}

.section {
  margin-top: 34px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.section h2 {
  margin: 0 0 12px;
  font-size: 1.25rem;
}

.section p,
.section li {
  color: #443730;
}

.section ul {
  padding-left: 1.2em;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 10px 18px;
  border-radius: 999px;
  color: #fff;
  background: var(--accent);
  text-decoration: none;
  box-shadow: 0 10px 24px rgba(47, 111, 95, 0.24);
}

.button.secondary {
  color: var(--accent-dark);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
  box-shadow: none;
}

.notice {
  margin-top: 22px;
  padding: 18px 20px;
  border-left: 5px solid var(--accent);
  border-radius: 16px;
  background: #fff8e8;
}

.footer {
  padding-top: 28px;
  color: var(--muted);
  font-size: 0.92rem;
}

@media (max-width: 780px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

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

  .hero {
    grid-template-columns: 1fr;
    padding: 28px;
  }

  .page {
    padding: 28px;
  }
}