:root {
  color-scheme: dark;
  --guide-ink: #0b0c0e;
  --guide-ink-soft: #15171b;
  --guide-paper: #f5f6f8;
  --guide-paper-strong: #ffffff;
  --guide-line: #d9dde4;
  --guide-muted: #59636f;
  --guide-red: #c5221f;
  --guide-red-dark: #a61916;
  --guide-max: 1180px;
  --guide-copy: 760px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--guide-paper); color: #171a20; font-family: Inter, "Segoe UI", Arial, sans-serif; line-height: 1.65; }
a { color: inherit; }
img { display: block; max-width: 100%; }

.guide-header {
  min-height: 68px;
  padding: 0 max(24px, calc((100vw - var(--guide-max)) / 2));
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(11, 12, 14, 0.96);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.guide-brand { display: inline-flex; align-items: center; gap: 11px; color: #fff; font-size: 14px; font-weight: 750; text-decoration: none; }
.guide-brand img { width: 38px; height: 38px; }
.guide-brand small { display: block; color: #aeb5c0; font-size: 10px; font-weight: 650; text-transform: uppercase; }
.guide-nav { display: flex; align-items: center; gap: 20px; }
.guide-nav a { color: #cbd0d8; font-size: 12px; font-weight: 700; text-decoration: none; }
.guide-nav a:hover, .guide-nav a:focus-visible { color: #fff; }
.guide-nav .language-link { padding: 5px 7px; border-bottom: 1px solid var(--guide-red); font-size: 11px; }

.guide-hero {
  min-height: 500px;
  padding: 88px max(24px, calc((100vw - var(--guide-max)) / 2)) 72px;
  background: var(--guide-ink);
  color: #fff;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.38fr);
  gap: 80px;
  align-items: end;
}
.guide-kicker { margin: 0 0 20px; color: #ff6b64; font-size: 11px; font-weight: 800; text-transform: uppercase; }
.guide-hero h1 { max-width: 900px; margin: 0; font-size: clamp(40px, 6vw, 72px); line-height: 1.02; letter-spacing: 0; }
.guide-deck { max-width: 760px; margin: 28px 0 0; color: #d4d8df; font-size: 20px; line-height: 1.55; }
.guide-meta { margin: 0; padding: 20px 0 0; border-top: 1px solid rgba(255, 255, 255, 0.16); color: #aeb5c0; font-size: 12px; }
.guide-meta span { display: block; margin-top: 6px; color: #fff; font-weight: 700; }

.guide-summary { padding: 54px max(24px, calc((100vw - var(--guide-max)) / 2)); border-bottom: 1px solid var(--guide-line); background: var(--guide-paper-strong); }
.guide-summary p { max-width: 920px; margin: 0; font-size: 24px; font-weight: 650; line-height: 1.5; }
.guide-summary strong { color: var(--guide-red-dark); }

.guide-layout {
  width: min(var(--guide-max), calc(100% - 48px));
  margin: 0 auto;
  padding: 70px 0 96px;
  display: grid;
  grid-template-columns: minmax(0, var(--guide-copy)) minmax(220px, 1fr);
  gap: 88px;
  align-items: start;
}
.guide-copy h2 { margin: 58px 0 18px; font-size: 32px; line-height: 1.2; }
.guide-copy h2:first-child { margin-top: 0; }
.guide-copy h3 { margin: 34px 0 12px; font-size: 21px; line-height: 1.3; }
.guide-copy p { margin: 0 0 20px; color: #424a55; font-size: 17px; }
.guide-copy ul { margin: 0 0 24px; padding-left: 22px; color: #424a55; font-size: 16px; }
.guide-copy li + li { margin-top: 10px; }
.guide-copy a { color: #294f96; font-weight: 700; text-decoration-thickness: 1px; text-underline-offset: 3px; }
.guide-callout { margin: 34px 0; padding: 24px 26px; border-left: 4px solid var(--guide-red); background: #ebeef3; }
.guide-callout p { margin: 0; color: #262b33; font-size: 16px; }
.guide-figure { margin: 44px 0; }
.guide-figure img { width: 100%; height: auto; border: 1px solid #cbd0d8; }
.guide-figure figcaption { margin-top: 10px; color: var(--guide-muted); font-size: 12px; }
.guide-aside { position: sticky; top: 30px; padding-top: 18px; border-top: 3px solid var(--guide-red); }
.guide-aside h2 { margin: 0 0 14px; font-size: 18px; }
.guide-aside p { margin: 0 0 18px; color: var(--guide-muted); font-size: 14px; }
.guide-aside a { display: inline-block; min-height: 44px; padding: 11px 16px; border: 1px solid var(--guide-red); border-radius: 4px; background: var(--guide-red); color: #fff; font-size: 13px; font-weight: 750; text-decoration: none; }
.guide-aside a:hover, .guide-aside a:focus-visible { border-color: var(--guide-red-dark); background: var(--guide-red-dark); }
.guide-sources { padding-top: 24px; border-top: 1px solid var(--guide-line); }
.guide-sources h2 { margin-top: 0; }
.guide-sources li { font-size: 14px; }
.guide-footer { min-height: 126px; padding: 34px max(24px, calc((100vw - var(--guide-max)) / 2)); background: var(--guide-ink-soft); color: #aeb5c0; display: grid; grid-template-columns: 1fr 1fr auto; gap: 24px; align-items: center; font-size: 12px; }
.guide-footer p { margin: 0; }
.guide-footer strong, .guide-footer a { color: #fff; }

@media (max-width: 860px) {
  .guide-hero { grid-template-columns: 1fr; gap: 44px; }
  .guide-layout { grid-template-columns: 1fr; gap: 56px; }
  .guide-aside { position: static; }
  .guide-footer { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .guide-header { min-height: 62px; padding-left: 18px; padding-right: 18px; }
  .guide-brand img { width: 34px; height: 34px; }
  .guide-brand span { font-size: 12px; }
  .guide-nav a:first-child { display: none; }
  .guide-hero { min-height: 0; padding: 70px 20px 54px; }
  .guide-hero h1 { font-size: 38px; }
  .guide-deck { font-size: 17px; }
  .guide-summary { padding: 38px 20px; }
  .guide-summary p { font-size: 20px; }
  .guide-layout { width: calc(100% - 40px); padding-top: 54px; }
  .guide-copy h2 { font-size: 27px; }
  .guide-footer { padding: 30px 20px; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }