:root {
  --paper: #f7f3ea;
  --card: #fffdf8;
  --ink: #151515;
  --muted: #6f6b64;
  --orange: #ef771f;
  --green: #397a49;
  --line: #ddd7cb;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 85% 8%, rgba(239, 119, 31, 0.10), transparent 24rem),
    var(--paper);
  font-family: "Avenir Next", "Helvetica Neue", "PingFang TC", sans-serif;
  line-height: 1.65;
}

a { color: inherit; }

.shell {
  width: min(760px, calc(100% - 36px));
  margin: 0 auto;
  padding: 28px 0 72px;
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 72px;
}

.brand {
  font-size: 1.45rem;
  font-weight: 800;
  text-decoration: none;
}

.nav-links { display: flex; gap: 18px; }
.nav-links a { color: var(--muted); font-size: .92rem; }

h1 {
  max-width: 680px;
  margin: 0 0 16px;
  font-size: clamp(2.6rem, 8vw, 5rem);
  line-height: .98;
  letter-spacing: -.055em;
}

h2 { margin: 42px 0 8px; font-size: 1.35rem; }
h3 { margin: 28px 0 6px; font-size: 1.05rem; }
p, li { color: var(--muted); }
.lede { max-width: 600px; font-size: 1.18rem; }
.eyebrow { color: var(--orange); font-weight: 750; }

.card {
  margin-top: 36px;
  padding: clamp(22px, 5vw, 38px);
  background: var(--card);
  border: 1px solid rgba(21, 21, 21, .06);
  border-radius: 28px;
  box-shadow: 0 18px 50px rgba(38, 31, 20, .08);
}

.pill {
  display: inline-block;
  margin-top: 18px;
  padding: 10px 16px;
  color: white;
  background: var(--ink);
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
}

.note {
  margin-top: 24px;
  padding: 16px 18px;
  border-left: 4px solid var(--green);
  background: rgba(57, 122, 73, .07);
  border-radius: 0 14px 14px 0;
}

.language-block + .language-block {
  margin-top: 48px;
  padding-top: 48px;
  border-top: 1px solid var(--line);
}

footer {
  margin-top: 52px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: .86rem;
}

@media (max-width: 560px) {
  nav { margin-bottom: 48px; }
  .nav-links { gap: 12px; }
  .nav-links a { font-size: .82rem; }
}