:root {
  color-scheme: dark;
  --bg: #070b12;
  --card: #101824;
  --text: #e8eef7;
  --muted: #a8b5c7;
  --line: rgba(232, 238, 247, 0.13);
  --green: #5ee0ad;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background: radial-gradient(circle at top, #122a2b 0, #0b1420 38%, var(--bg) 72%);
  font: 16px/1.8 "PingFang SC", "Noto Sans SC", system-ui, sans-serif;
}

a { color: var(--green); }

.public-shell {
  width: min(880px, calc(100% - 32px));
  margin: 0 auto;
  padding: 30px 0 72px;
}

.public-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 10px 0 30px;
  border-bottom: 1px solid var(--line);
}

.public-brand { color: var(--text); font-weight: 800; text-decoration: none; letter-spacing: .04em; }
.public-nav { display: flex; flex-wrap: wrap; gap: 18px; }
.public-nav a { color: var(--muted); font-size: 14px; text-decoration: none; }
.public-nav a:hover { color: var(--green); }

main { padding: 56px 0 20px; }
.eyebrow { margin: 0 0 12px; color: var(--green); font-size: 13px; font-weight: 800; letter-spacing: .12em; }
h1 { max-width: 760px; margin: 0 0 22px; font: 700 clamp(34px, 7vw, 58px)/1.18 "Noto Serif SC", "Songti SC", serif; }
.lead { max-width: 760px; margin: 0 0 44px; color: #c7d1df; font-size: 19px; }

.public-card {
  margin: 24px 0;
  padding: 26px 28px;
  background: rgba(16, 24, 36, .82);
  border: 1px solid var(--line);
  border-radius: 14px;
}

h2 { margin: 0 0 12px; font-size: 22px; }
h3 { margin: 24px 0 8px; font-size: 17px; }
p, li { color: #c7d1df; }
ul, ol { padding-left: 1.35em; }
.notice { border-left: 3px solid var(--green); }
.public-footer { margin-top: 42px; padding-top: 22px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }

@media (max-width: 640px) {
  .public-header { align-items: flex-start; flex-direction: column; }
  main { padding-top: 40px; }
  .public-card { padding: 22px 20px; }
}