:root {
  color-scheme: light dark;
  --background: #f6f8f0;
  --surface: #ffffff;
  --ink: #123b2a;
  --muted: #50685d;
  --accent: #287847;
  --accent-soft: #e4f2df;
  --border: #c8d9cc;
  --shadow: 0 18px 50px rgba(18, 59, 42, 0.09);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 8% 8%, rgba(91, 166, 104, 0.14), transparent 24rem),
    radial-gradient(circle at 92% 35%, rgba(91, 166, 104, 0.10), transparent 22rem),
    var(--background);
  color: var(--ink);
  line-height: 1.65;
}

a { color: var(--accent); text-underline-offset: 0.18em; }
a:hover { text-decoration-thickness: 2px; }

.shell { width: min(920px, calc(100% - 32px)); margin: 0 auto; }

header {
  padding: 28px 0 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand { font-size: 1.35rem; font-weight: 800; letter-spacing: -0.03em; text-decoration: none; color: var(--ink); }
nav { display: flex; flex-wrap: wrap; gap: 18px; font-size: 0.95rem; }

.hero {
  margin: 18px 0 28px;
  padding: clamp(30px, 7vw, 64px);
  border: 1px solid var(--border);
  border-radius: 32px;
  background: linear-gradient(140deg, var(--accent-soft), var(--surface));
  box-shadow: var(--shadow);
}

.eyebrow { margin: 0 0 8px; color: var(--accent); font-size: 0.82rem; font-weight: 800; letter-spacing: 0.12em; text-transform: uppercase; }
h1 { margin: 0; max-width: 18ch; font-size: clamp(2.25rem, 7vw, 4.6rem); line-height: 1.02; letter-spacing: -0.055em; }
.lead { max-width: 62ch; margin: 22px 0 0; font-size: 1.12rem; color: var(--muted); }

main article {
  padding: clamp(24px, 5vw, 48px);
  border: 1px solid var(--border);
  border-radius: 26px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

h2 { margin: 2.2rem 0 0.65rem; font-size: 1.45rem; line-height: 1.25; }
h2:first-child { margin-top: 0; }
h3 { margin: 1.5rem 0 0.4rem; font-size: 1.08rem; }
p, ul { margin-top: 0.55rem; }
li + li { margin-top: 0.45rem; }

.notice {
  margin: 1.2rem 0;
  padding: 18px 20px;
  border-left: 4px solid var(--accent);
  border-radius: 10px;
  background: var(--accent-soft);
}

.button {
  display: inline-block;
  margin-top: 8px;
  padding: 12px 18px;
  border-radius: 999px;
  background: var(--accent);
  color: white;
  font-weight: 750;
  text-decoration: none;
}

footer { padding: 34px 0 44px; color: var(--muted); font-size: 0.9rem; }

@media (prefers-color-scheme: dark) {
  :root {
    --background: #071f16;
    --surface: #0d2a1e;
    --ink: #e9f4e9;
    --muted: #bed0c5;
    --accent: #89dfa0;
    --accent-soft: #153b28;
    --border: #3f6752;
    --shadow: 0 18px 50px rgba(0, 0, 0, 0.28);
  }
  .button { color: #082015; }
}

@media (max-width: 620px) {
  header { align-items: flex-start; flex-direction: column; }
  .hero { border-radius: 24px; }
  main article { border-radius: 20px; }
}