:root {
  --ink: #14151a;
  --ink-soft: #5b6070;
  --line: #e7e7ef;
  --brand: #1677ff;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink); line-height: 1.65; background: #fff;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 0 24px; }
header { border-bottom: 1px solid var(--line); padding: 20px 0; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.1rem; }
.logo-mark { width: 28px; height: 28px; border-radius: 6px; background: #1677ff; display: grid; place-items: center; color: #fff; font-weight: 700; }
a { color: var(--brand); }
main { padding: 44px 0 80px; }
h1 { font-size: 2rem; letter-spacing: -0.02em; margin: 0 0 6px; }
.updated { color: var(--ink-soft); margin: 0 0 32px; font-size: .92rem; }
h2 { font-size: 1.2rem; margin: 34px 0 10px; letter-spacing: -0.01em; }
p, li { color: #2a2c36; }
ul { padding-left: 20px; }
li { margin: 6px 0; }
.note { background: #fff8e1; border: 1px solid #ffe08a; border-radius: 10px; padding: 14px 16px; font-size: .9rem; color: #7a5b00; margin: 20px 0; }
footer { border-top: 1px solid var(--line); padding: 28px 0; color: var(--ink-soft); font-size: .9rem; }
footer a { color: var(--ink-soft); }