:root {
  --carbon: #0F172A; --cobalt: #2563EB; --mist: #E7EEF7; --stone: #F5F6F4;
  --white: #FFFFFF; --muted: #475569; --line: #DCE3EC;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --carbon: #E2E8F0; --stone: #0B1220; --white: #111A2E; --muted: #94A3B8; --line: #22304D; --mist: #16233D;
  }
}
*, *::before, *::after { box-sizing: border-box; }
body {
  margin: 0; font-family: "Manrope", system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--stone); color: var(--carbon); line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
:focus-visible { outline: 3px solid var(--cobalt); outline-offset: 3px; border-radius: 4px; }
.top { border-bottom: 1px solid var(--line); background: var(--white); }
.top .in { width: min(820px, 100% - 32px); margin: 0 auto; height: 64px; display: flex; align-items: center; justify-content: space-between; }
.top img { height: 30px; width: auto; }
.top a.back { font-weight: 600; font-size: 15px; color: var(--cobalt); text-decoration: none; }
main { width: min(820px, 100% - 32px); margin: 0 auto; padding: 48px 0 80px; }
h1 { font-size: clamp(1.9rem, 4vw, 2.5rem); line-height: 1.15; letter-spacing: -0.03em; margin: 0 0 8px; }
.meta { color: var(--muted); margin: 0 0 32px; font-size: 15px; }
h2 { font-size: 1.25rem; margin: 40px 0 10px; letter-spacing: -0.01em; }
h3 { font-size: 1.05rem; margin: 22px 0 6px; }
p, li { color: var(--carbon); }
ul { padding-left: 22px; }
li { margin: 4px 0; }
a { color: var(--cobalt); }
.box { background: var(--white); border: 1px solid var(--line); border-radius: 14px; padding: 18px 22px; margin: 18px 0; }
.box p { margin: 4px 0; }
table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 15px; }
th, td { text-align: left; vertical-align: top; padding: 10px 12px; border-bottom: 1px solid var(--line); }
th { background: var(--mist); }
@media (max-width: 600px) { table, thead, tbody, tr, th, td { display: block; } thead { display: none; } td { border: 0; padding: 4px 0; } tr { border-bottom: 1px solid var(--line); padding: 10px 0; } }
footer { border-top: 1px solid var(--line); padding: 28px 0; color: var(--muted); font-size: 14px; }
footer .in { width: min(820px, 100% - 32px); margin: 0 auto; display: flex; flex-wrap: wrap; gap: 18px; justify-content: space-between; }