:root {
  color-scheme: dark;
  --bg: #0b0b0b;
  --panel: #161616;
  --line: #2b2b2b;
  --text: #f4f4f4;
  --muted: #a9a9a9;
  --accent: #ff9d00;
  --accent-strong: #ffb21a;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}
a { color: inherit; }
a:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
.site-header { border-bottom: 1px solid var(--line); background: #101010; }
.header-inner, .page, .footer-inner {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}
.header-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand { display: inline-flex; align-items: center; color: var(--text); text-decoration: none; white-space: nowrap; }
.brand-logo { display: block; width: auto; height: 34px; }
.main-nav { display: flex; align-items: center; gap: 2px; flex-wrap: wrap; justify-content: flex-end; }
.main-nav a { color: var(--muted); font-size: 13px; font-weight: 500; padding: 6px 9px; border-radius: 6px; text-decoration: none; transition: all .2s; white-space: nowrap; }
.main-nav a:hover { color: #fff; background: rgba(255,255,255,.07); }
.main-nav .login { border: 0; border-radius: 6px; color: #111; background: var(--accent); font-weight: 700; padding: 8px 18px; }
.main-nav .login:hover { color: #111; background: var(--accent-strong); }
.hero { padding: 68px 0 40px; border-bottom: 1px solid var(--line); background: radial-gradient(ellipse at 18% 0%, #2b1b00 0, transparent 42%), #0e0e0e; }
.breadcrumb { color: var(--muted); font-size: 14px; margin: 0 0 22px; }
.breadcrumb a { color: var(--muted); }
.eyebrow { color: var(--accent-strong); font-size: 14px; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; margin: 0 0 10px; }
h1 { font-size: clamp(34px, 5vw, 58px); line-height: 1.1; letter-spacing: 0; max-width: 880px; margin: 0; }
.lede { max-width: 780px; color: #d3d3d3; font-size: 19px; margin: 20px 0 0; }
.layout { display: grid; grid-template-columns: minmax(0, 760px) 240px; justify-content: center; align-items: start; gap: clamp(40px, 5vw, 72px); padding: 52px 0 72px; }
.article { min-width: 0; font-size: 17px; }
.article h2 { max-width: 760px; font-size: 27px; letter-spacing: 0; line-height: 1.25; margin: 50px 0 14px; scroll-margin-top: 28px; }
.article h3 { font-size: 20px; margin: 28px 0 10px; }
.article p, .article li { max-width: 70ch; color: #dedede; }
.article a { color: var(--accent-strong); text-decoration-thickness: 1px; text-underline-offset: 3px; }
.article ul, .article ol { max-width: 760px; padding-left: 24px; }
.article li + li { margin-top: 8px; }
.article figure { width: min(100%, 760px); margin: 32px 0; }
.article img { display: block; width: auto; max-width: 100%; height: auto; border: 1px solid #353535; border-radius: 4px; background: #202020; }
.article figcaption { color: var(--muted); font-size: 13px; margin-top: 8px; }
.note { max-width: 760px; padding: 18px 20px; border-left: 3px solid var(--accent); background: #17130b; color: #e4d6bd; }
.toc { position: sticky; top: 20px; border-left: 1px solid var(--line); padding-left: 22px; }
.toc strong { display: block; margin-bottom: 10px; }
.toc a { display: block; color: var(--muted); font-size: 14px; text-decoration: none; margin: 9px 0; }
.toc a:hover { color: var(--accent-strong); }
.guide-links { border-top: 1px solid var(--line); padding-top: 28px; margin-top: 58px; }
.guide-links h2 { margin-top: 0; }
.guide-links ul { list-style: none; padding: 0; display: grid; gap: 9px; }
.guide-links a { font-weight: 700; }
.site-footer { border-top: 1px solid var(--line); background: #101010; }
.footer-inner { padding: 30px 0 38px; color: var(--muted); font-size: 14px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 16px; margin: 15px 0; }
.footer-links a { color: #d5d5d5; }
@media (max-width: 780px) {
  .header-inner { min-height: 64px; gap: 12px; }
  .main-nav { gap: 11px; }
  .main-nav a { font-size: 12px; }
  .main-nav a:not(.login) { display: none; }
  .hero { padding: 42px 0 28px; }
  .layout { display: block; padding-top: 35px; }
  .toc { position: static; border: 1px solid var(--line); padding: 16px; margin: 0 0 32px; }
  .toc a { display: inline; margin-right: 12px; }
  .article { font-size: 16px; }
  .article p, .article li { max-width: none; }
  .article figure { width: 100%; margin: 28px 0; }
}