:root {
  color-scheme: light dark;
  --bg: #f7faf8;
  --bg-soft: #edf5f0;
  --card: #ffffff;
  --text: #17201b;
  --muted: #5f6f66;
  --line: #dce7df;
  --accent: #2f855a;
  --accent-dark: #226644;
  --warning: #7a4b00;
  --shadow: 0 18px 50px rgba(23, 32, 27, 0.08);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1310;
    --bg-soft: #111d17;
    --card: #16211b;
    --text: #edf7f0;
    --muted: #b0c0b7;
    --line: #2a3a31;
    --accent: #68d391;
    --accent-dark: #9ae6b4;
    --warning: #fbd38d;
    --shadow: 0 18px 50px rgba(0, 0, 0, 0.32);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(47, 133, 90, 0.14), transparent 34rem),
    linear-gradient(180deg, var(--bg), var(--bg-soft));
  color: var(--text);
  line-height: 1.6;
}

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

.container {
  width: min(1080px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(14px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 0;
}

.brand {
  font-weight: 800;
  letter-spacing: -0.03em;
  text-decoration: none;
  color: var(--text);
  font-size: 1.15rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}

.nav-links a:hover {
  color: var(--text);
}

.hero {
  padding: 84px 0 56px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 36px;
  align-items: center;
}

.eyebrow {
  color: var(--accent-dark);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  margin: 0 0 12px;
}

h1 {
  font-size: clamp(2.45rem, 7vw, 5rem);
  line-height: 0.95;
  letter-spacing: -0.075em;
  margin: 0;
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.8rem);
  line-height: 1.05;
  letter-spacing: -0.055em;
  margin: 0 0 16px;
}

h3 {
  margin: 0 0 8px;
  letter-spacing: -0.025em;
}

.lede {
  font-size: clamp(1.1rem, 2.3vw, 1.35rem);
  color: var(--muted);
  margin: 22px 0 0;
  max-width: 720px;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 12px 18px;
  font-weight: 800;
  text-decoration: none;
  border: 1px solid var(--line);
  color: var(--text);
  background: var(--card);
}

.button.primary {
  background: var(--accent);
  color: #ffffff;
  border-color: transparent;
}

.hero-card,
.card,
.notice {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.hero-card {
  padding: 26px;
}

.hero-card ul,
.check-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.hero-card li,
.check-list li {
  display: flex;
  gap: 10px;
  margin: 12px 0;
  color: var(--muted);
}

.hero-card li::before,
.check-list li::before {
  content: "✓";
  color: var(--accent-dark);
  font-weight: 900;
}

.section {
  padding: 56px 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.card {
  padding: 22px;
}

.card p,
.notice p,
.legal p,
.legal li {
  color: var(--muted);
}

.notice {
  padding: 24px;
  border-color: color-mix(in srgb, var(--warning) 35%, var(--line));
}

.notice strong {
  color: var(--warning);
}

.legal {
  width: min(860px, calc(100% - 32px));
  margin: 0 auto;
  padding: 56px 0;
}

.legal h1 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  margin-bottom: 12px;
}

.legal h2 {
  font-size: 1.4rem;
  margin-top: 34px;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 28px 0;
  color: var(--muted);
}

.footer-row {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}

.footer-row a {
  color: var(--muted);
  margin-left: 14px;
  text-decoration: none;
}

@media (max-width: 760px) {
  .hero {
    padding-top: 54px;
  }

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

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

  .nav-links {
    gap: 12px;
  }
}