.guide-body { background: var(--app-canvas); color: var(--app-ink); }
.guide-page { width: min(calc(100% - 32px), 1240px); margin: 0 auto; padding: 18px 0 88px; }
.guide-page :where(h1, h2, h3, p, ol, ul) { margin-top: 0; }
.guide-hero {
  min-height: 610px;
  display: grid;
  grid-template-columns: minmax(0, 1.16fr) minmax(340px, .84fr);
  align-items: center;
  gap: clamp(46px, 7vw, 86px);
  padding: clamp(46px, 6vw, 76px);
  border: 1px solid var(--app-line-strong);
  border-radius: 16px;
  background: #fff;
}
.guide-eyebrow { margin: 0 0 20px; color: #777771; font-size: 14px; font-weight: 800; letter-spacing: .12em; line-height: 1.5; text-transform: uppercase; }
.guide-hero h1 { max-width: 770px; margin: 0; font-size: clamp(50px, 5.4vw, 72px); font-weight: 690; line-height: .98; letter-spacing: -.06em; }
.guide-lead { max-width: 680px; margin: 26px 0 0; color: var(--app-muted); font-size: 17px; line-height: 1.75; }
.guide-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 32px; }
.guide-button { min-height: 50px; display: inline-flex; align-items: center; justify-content: center; padding: 0 19px; border: 1px solid var(--app-line-strong); border-radius: 8px; background: #fff; color: var(--app-ink); font-size: 14px; font-weight: 760; text-decoration: none; transition: transform .2s ease, background .2s ease; }
.guide-button:hover { transform: translateY(-2px); }
.guide-button-primary { border-color: #171714; background: #171714; color: #fff; }
.guide-button-primary:hover { background: #292927; }
.guide-quick-plan { padding: 30px; border-radius: 14px; background: #171714; box-shadow: 0 24px 65px rgba(23,23,20,.16); color: #fff; }
.guide-quick-plan > span { display: block; padding-bottom: 17px; border-bottom: 1px solid #33332f; color: #8e8e87; font-size: 14px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.guide-quick-plan ol { margin: 0; padding: 0; list-style: none; }
.guide-quick-plan li { min-height: 78px; display: grid; grid-template-columns: 34px 1fr; align-items: center; gap: 12px; border-bottom: 1px solid #33332f; }
.guide-quick-plan li:last-child { border-bottom: 0; }
.guide-quick-plan b { color: #85857e; font-size: 14px; }
.guide-quick-plan div { display: grid; gap: 4px; }
.guide-quick-plan strong { font-size: 15px; }
.guide-quick-plan small { color: #999992; font-size: 14px; }
.guide-byline { width: min(100% - 80px, 1080px); display: grid; grid-template-columns: 48px 1fr; align-items: center; gap: 14px; margin: 0 auto; padding: 30px 0; }
.guide-author-mark { width: 48px; height: 48px; display: grid; place-items: center; border-radius: 50%; background: #171714; color: #fff; font-size: 13px; font-weight: 800; }
.guide-byline > div:nth-child(2) { display: grid; gap: 4px; }
.guide-byline strong { font-size: 14px; }
.guide-byline span { color: var(--app-muted); font-size: 13px; line-height: 1.45; }
.guide-layout { width: min(100% - 80px, 1080px); display: grid; grid-template-columns: 220px minmax(0, 1fr); align-items: start; gap: clamp(50px, 8vw, 100px); margin: 0 auto; padding: 84px 0 110px; }
.guide-toc { position: sticky; top: 96px; display: grid; border-top: 1px solid var(--app-line-strong); }
.guide-toc span { padding: 18px 0 14px; color: #8b8b84; font-size: 12px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.guide-toc a { padding: 11px 0; border-bottom: 1px solid var(--app-line); color: var(--app-muted); font-size: 13px; font-weight: 680; text-decoration: none; }
.guide-toc a:hover { color: var(--app-ink); }
.guide-content { min-width: 0; }
.guide-content > section { scroll-margin-top: 96px; padding: 0 0 88px; }
.guide-content > section + section { padding-top: 88px; border-top: 1px solid var(--app-line-strong); }
.guide-section-label { margin: 0 0 16px; color: #83837c; font-size: 13px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.guide-content h2 { max-width: 780px; margin: 0; font-size: clamp(36px, 4vw, 52px); font-weight: 670; line-height: 1.04; letter-spacing: -.052em; }
.guide-content > section > p:not(.guide-section-label):not(.guide-source-note) { max-width: 760px; margin: 24px 0 0; color: var(--app-muted); font-size: 16px; line-height: 1.82; }
.guide-content a { color: var(--app-ink); font-weight: 700; text-underline-offset: 3px; }
.guide-callout { display: grid; gap: 8px; margin-top: 32px; padding: 24px 26px; border-left: 3px solid #171714; background: #fff; }
.guide-callout strong { font-size: 14px; }
.guide-callout span { color: var(--app-muted); font-size: 14px; line-height: 1.7; }
.guide-timeline { margin: 38px 0 0; padding: 0; border-top: 1px solid var(--app-line-strong); list-style: none; }
.guide-timeline li { display: grid; grid-template-columns: 150px 1fr; gap: 32px; padding: 30px 0; border-bottom: 1px solid var(--app-line); }
.guide-timeline > li > span { color: #777771; font-size: 13px; font-weight: 800; letter-spacing: .05em; text-transform: uppercase; }
.guide-timeline h3 { margin: 0 0 8px; font-size: 21px; letter-spacing: -.025em; }
.guide-timeline p { margin: 0; color: var(--app-muted); font-size: 14px; line-height: 1.72; }
.guide-topic-grid, .guide-error-loop { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 36px; }
.guide-topic-grid article, .guide-error-loop article { min-height: 190px; padding: 26px; border: 1px solid var(--app-line); border-radius: 10px; background: #fff; }
.guide-topic-grid h3, .guide-error-loop h3 { margin: 0 0 10px; font-size: 18px; letter-spacing: -.02em; }
.guide-topic-grid p, .guide-error-loop p { margin: 0; color: var(--app-muted); font-size: 14px; line-height: 1.7; }
.guide-source-note { margin: 30px 0 0; padding: 22px 24px; border: 1px solid var(--app-line-strong); border-radius: 10px; color: var(--app-muted); font-size: 14px; line-height: 1.75; }
.guide-error-loop { grid-template-columns: repeat(3, 1fr); }
.guide-error-loop article { min-height: 220px; }
.guide-error-loop span { display: block; margin-bottom: 42px; color: #8d8d86; font-size: 13px; font-weight: 800; }
.guide-checklist { display: grid; gap: 0; margin: 32px 0 0; padding: 0; border-top: 1px solid var(--app-line-strong); list-style: none; }
.guide-checklist li { position: relative; padding: 18px 12px 18px 34px; border-bottom: 1px solid var(--app-line); color: var(--app-muted); font-size: 15px; line-height: 1.65; }
.guide-checklist li::before { position: absolute; top: 24px; left: 6px; width: 8px; height: 8px; border-radius: 50%; background: #171714; content: ""; }
.guide-faq details { border-bottom: 1px solid var(--app-line); }
.guide-faq details:first-of-type { margin-top: 34px; border-top: 1px solid var(--app-line-strong); }
.guide-faq summary { padding: 22px 2px; cursor: pointer; font-size: 16px; font-weight: 730; list-style: none; }
.guide-faq summary::-webkit-details-marker { display: none; }
.guide-faq summary::after { float: right; color: #85857e; content: "+"; }
.guide-faq details[open] summary::after { content: "−"; }
.guide-faq details p { max-width: 730px; margin: -4px 0 22px; color: var(--app-muted); font-size: 14px; line-height: 1.75; }
.guide-final { min-height: 360px; display: flex; align-items: flex-start; justify-content: space-between; gap: 40px; padding: clamp(38px, 5vw, 60px); border-radius: 14px; background: #171714; color: #fff; }
.guide-final h2 { max-width: 650px; margin: 0; font-size: clamp(40px, 4.5vw, 58px); line-height: 1; letter-spacing: -.05em; }
.guide-final p:not(.guide-eyebrow) { max-width: 530px; margin: 22px 0 0; color: #aaa9a2; font-size: 15px; line-height: 1.7; }
.guide-button-light { margin-top: auto; border-color: #fff; background: #fff; color: #171714; white-space: nowrap; }

@media (max-width: 900px) {
  .guide-hero { grid-template-columns: 1fr; }
  .guide-quick-plan { width: 100%; }
  .guide-layout { grid-template-columns: 1fr; }
  .guide-toc { position: static; grid-template-columns: repeat(2, 1fr); }
  .guide-toc span { grid-column: 1 / -1; }
}
@media (max-width: 640px) {
  .guide-page { width: min(100% - 16px, 1240px); padding-top: 10px; }
  .guide-hero { gap: 34px; padding: 40px 20px 20px; border-radius: 12px; }
  .guide-hero h1 { font-size: 40px; }
  .guide-lead { font-size: 14px; }
  .guide-actions { align-items: stretch; flex-direction: column; }
  .guide-button { width: 100%; }
  .guide-byline { width: calc(100% - 24px); grid-template-columns: 44px 1fr; }
  .guide-layout { width: calc(100% - 24px); gap: 56px; padding: 64px 0 80px; }
  .guide-content > section { padding-bottom: 68px; }
  .guide-content > section + section { padding-top: 68px; }
  .guide-content h2 { font-size: 36px; }
  .guide-content > section > p:not(.guide-section-label):not(.guide-source-note) { font-size: 15px; }
  .guide-timeline li { grid-template-columns: 1fr; gap: 10px; }
  .guide-topic-grid, .guide-error-loop { grid-template-columns: 1fr; }
  .guide-topic-grid article, .guide-error-loop article { min-height: 0; }
  .guide-error-loop span { margin-bottom: 24px; }
  .guide-final { min-height: 390px; align-items: stretch; flex-direction: column; padding: 34px 24px; }
  .guide-button-light { margin-top: auto; }
}

@media (prefers-reduced-motion: reduce) {
  .guide-button { transition: none; }
}