:root {
  color-scheme: dark;
  --bg: #050602;
  --surface: #0B0D09;
  --t1: #EDEFE6;
  --t2: #A5AAB1;
  --brand: #CCFF00;
  --border: rgba(255, 255, 255, 0.14);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--t1); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", sans-serif; line-height: 1.8; }
a { color: var(--brand); text-underline-offset: 0.2em; }
a:hover { color: #E8FFB0; }
a:focus-visible { outline: 2px solid var(--brand); outline-offset: 5px; border-radius: 3px; }
.guide-nav { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 20px; max-width: 1120px; margin: auto; padding: 24px 28px; border-bottom: 1px solid var(--border); }
.brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 800; letter-spacing: 4px; text-decoration: none; }
.guide-nav nav { display: flex; gap: 20px; flex-wrap: wrap; font-size: 14px; }
.guide-nav nav a { color: var(--t2); }
.guide-nav nav a[aria-current] { color: var(--brand); }
main { max-width: 880px; margin: auto; padding: 56px 28px 48px; }
h1, h2 { line-height: 1.25; letter-spacing: -0.025em; }
h1 { font-size: clamp(32px, 5vw, 52px); margin: 18px 0 24px; max-width: 780px; }
h2 { font-size: clamp(23px, 3vw, 30px); margin: 0 0 22px; }
p { margin: 18px 0; }
.kicker { color: var(--brand); font-size: 12px; letter-spacing: 2px; font-weight: 700; }
.lead { color: var(--t2); font-size: 19px; }
.reviewed { color: var(--t2); font-size: 13px; }
.toc { display: flex; flex-wrap: wrap; gap: 10px 22px; border-block: 1px solid var(--border); padding: 20px 0; margin: 30px 0 42px; font-size: 14px; }
section { margin: 44px 0; scroll-margin-top: 24px; }
ol, ul { padding-left: 26px; }
li { padding-left: 6px; margin: 16px 0; }
.note { padding: 18px 22px; border-left: 3px solid var(--brand); background: var(--surface); color: var(--t2); }
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 12px; }
table { border-collapse: collapse; width: 100%; text-align: left; font-size: 15px; }
th, td { padding: 18px; vertical-align: top; border-bottom: 1px solid var(--border); }
thead { background: var(--surface); }
tbody th { width: 27%; font-weight: 600; }
tbody tr:last-child th, tbody tr:last-child td { border-bottom: 0; }
.help { border: 1px solid var(--border); padding: 24px; border-radius: 12px; }
.download { display: inline-block; padding: 14px 22px; background: var(--brand); color: #050602; font-weight: 750; border-radius: 12px; text-decoration: none; }
.download:hover { background: #E8FFB0; color: #050602; }
footer { max-width: 1120px; margin: auto; padding: 26px 28px 40px; border-top: 1px solid var(--border); color: var(--t2); font-size: 13px; }
@media (max-width: 540px) {
  .guide-nav { padding: 20px; gap: 14px; }
  .guide-nav nav { gap: 16px; }
  main { padding: 36px 20px; }
  th, td { padding: 12px; }
  tbody th { width: 32%; }
  .note, .help { padding: 16px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }