:root {
  color-scheme: light;
  --ink: #102733;
  --ink-soft: #50616a;
  --mint: #8ed8c3;
  --mint-strong: #36b994;
  --paper: #f5f6fa;
  --surface: #ffffff;
  --line: #dce5e8;
  --max: 760px;
}

* { box-sizing: border-box; }

html { background: var(--paper); scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 88% 4%, rgba(142, 216, 195, 0.24), transparent 24rem),
    var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", sans-serif;
  font-size: 17px;
  line-height: 1.68;
}

a { color: #16785f; text-underline-offset: 0.18em; }
a:hover { color: #0d5d49; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: min(calc(100% - 2rem), 980px);
  margin: 0 auto;
  padding: 1.1rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--ink);
  font-size: 1.18rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border-radius: 0.7rem;
  color: var(--ink);
  background: var(--mint);
  font-weight: 800;
}

.lang { font-size: 0.92rem; }

main {
  width: min(calc(100% - 2rem), var(--max));
  margin: 2.8rem auto 5rem;
}

.eyebrow {
  margin: 0 0 0.5rem;
  color: #278d70;
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

h1, h2 { letter-spacing: -0.035em; }
h1 { margin: 0; font-size: clamp(2.35rem, 7vw, 4.4rem); line-height: 1.03; }
h2 { margin: 2.4rem 0 0.55rem; font-size: 1.48rem; line-height: 1.22; }
p, ul { margin: 0.65rem 0 0; }
ul { padding-left: 1.3rem; }

.lede {
  max-width: 42rem;
  margin-top: 1.2rem;
  color: var(--ink-soft);
  font-size: 1.14rem;
}

.meta {
  margin-top: 1.2rem;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 2.2rem;
}

.card {
  min-height: 11rem;
  padding: 1.35rem;
  border: 1px solid var(--line);
  border-radius: 1.35rem;
  color: var(--ink);
  background: rgba(255,255,255,0.84);
  box-shadow: 0 0.8rem 2.4rem rgba(16,39,51,0.06);
  text-decoration: none;
}

.card strong { display: block; font-size: 1.08rem; }
.card span { display: block; margin-top: 0.55rem; color: var(--ink-soft); font-size: 0.93rem; }

.notice {
  margin-top: 2rem;
  padding: 1rem 1.15rem;
  border-left: 0.25rem solid var(--mint-strong);
  border-radius: 0.4rem 1rem 1rem 0.4rem;
  background: rgba(142,216,195,0.16);
}

.document {
  padding: clamp(1.4rem, 4vw, 2.6rem);
  border: 1px solid var(--line);
  border-radius: 1.5rem;
  background: rgba(255,255,255,0.9);
  box-shadow: 0 1rem 3rem rgba(16,39,51,0.06);
}

.document h1 { font-size: clamp(2rem, 6vw, 3.25rem); }
.document h2 { padding-top: 0.2rem; border-top: 1px solid var(--line); }

footer {
  width: min(calc(100% - 2rem), 980px);
  margin: 0 auto;
  padding: 1.8rem 0 3rem;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 0.88rem;
}

@media (max-width: 720px) {
  main { margin-top: 1.6rem; }
  .cards { grid-template-columns: 1fr; }
  .card { min-height: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}