:root {
  color-scheme: light;
  --ink: #111716;
  --paper: #f7f8f5;
  --card: #ffffff;
  --muted: #5e6966;
  --line: #dce1dd;
  --lime: #b7ee37;
  --dark: #101615;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 16px/1.65 Arial, Helvetica, sans-serif; }
a { color: inherit; }
.top { position: sticky; top: 0; z-index: 5; border-bottom: 1px solid var(--line); background: rgba(247,248,245,.94); backdrop-filter: blur(14px); }
.top-inner, main, .footer-inner { width: min(920px, calc(100% - 40px)); margin: 0 auto; }
.top-inner { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { font-weight: 800; font-size: 1.18rem; text-decoration: none; letter-spacing: -.04em; }
.brand span { padding: 7px 9px; border-radius: 10px; background: var(--lime); color: #0b100f; }
.back { color: var(--muted); font-size: .88rem; }
main { padding: 72px 0 90px; }
.eyebrow { margin: 0 0 18px; color: #65705d; font-size: .74rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
h1, h2 { margin: 0; letter-spacing: -.045em; line-height: 1.02; }
h1 { max-width: 820px; font-size: clamp(2.7rem, 7vw, 5.7rem); }
h2 { margin-top: 52px; font-size: clamp(1.65rem, 3.6vw, 2.55rem); }
h3 { margin: 30px 0 8px; font-size: 1.1rem; }
.lead { max-width: 760px; margin: 25px 0 0; color: var(--muted); font-size: 1.12rem; }
.meta { display: flex; flex-wrap: wrap; gap: 8px 18px; margin: 28px 0 0; color: var(--muted); font-size: .82rem; }
.toc { display: grid; gap: 4px; margin: 42px 0; padding: 26px; border: 1px solid var(--line); border-radius: 22px; background: var(--card); }
.toc a { color: var(--muted); text-decoration-color: var(--lime); text-underline-offset: 3px; }
p, li { max-width: 790px; }
ul, ol { padding-left: 22px; }
li + li { margin-top: 7px; }
.note { margin: 30px 0; padding: 22px 24px; border-radius: 20px; background: var(--dark); color: #f4f7f5; }
.note strong { color: var(--lime); }
.table-wrap { overflow-x: auto; margin: 22px 0; }
table { width: 100%; min-width: 680px; border-collapse: collapse; background: var(--card); }
th, td { padding: 15px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
th { background: #eef1ed; font-size: .78rem; text-transform: uppercase; letter-spacing: .05em; }
.operator { margin-top: 38px; padding: 28px; border-radius: 24px; background: var(--lime); color: #0b100f; }
.operator p { margin: 6px 0; }
.footer { border-top: 1px solid var(--line); padding: 34px 0 45px; color: var(--muted); font-size: .8rem; }
.footer-inner { display: flex; flex-wrap: wrap; gap: 12px 24px; justify-content: space-between; }
@media (max-width: 600px) {
  .top-inner, main, .footer-inner { width: min(100% - 28px, 920px); }
  .top-inner { min-height: 64px; }
  main { padding-top: 48px; }
  .back { font-size: .75rem; }
}