.guide-page { max-width: 1150px; margin: 0 auto; padding: 60px 0; }
/* The article header is not application chrome. Override inherited fixed
   heights/sticky positioning with a selector scoped to this page only. */
body.sp-guide header.guide-header { position: static; display: block; height: auto; min-height: 0; max-width: 900px; margin: 0 0 48px; padding: 0; background: transparent; color: var(--sp-ink); border: 0; box-shadow: none; backdrop-filter: none; z-index: auto; }
body.sp-guide .guide-header h1 { max-width: 850px; margin: 22px 0 20px; font-size: clamp(36px, 5vw, 68px); line-height: 1.08; letter-spacing: -.045em; }
.guide-byline { margin: 24px 0 0; color: #536765; font: 11px/1.8 ui-monospace, monospace; }
.guide-layout { display: grid; grid-template-columns: 235px minmax(0, 1fr); gap: 60px; align-items: start; }
.guide-toc { position: sticky; top: 105px; display: grid; gap: 12px; padding: 18px 0; border-top: 2px solid var(--sp-blue); }
.guide-toc a { color: #4b6360; font-size: 12px; line-height: 1.7; }
.guide-toc a { display: block; padding: 3px 0; }
.guide-page a:focus-visible { outline: 3px solid var(--sp-blue); outline-offset: 4px; }
.guide-content { min-width: 0; }
.guide-content section { margin-bottom: 42px; scroll-margin-top: 100px; }
body.sp-guide .guide-content h2 { font-size: 27px; line-height: 1.25; letter-spacing: -.04em; }
.guide-content p { color: #465e59; font-size: 15px; line-height: 1.85; }
.guide-content section > a { font-size: 12px; font-weight: 750; }
.guide-content .mkt-editor-shot { margin-top: 24px; }
.guide-actions { display: flex; flex-wrap: wrap; gap: 12px; padding-top: 24px; border-top: 1px solid var(--sp-line); }
@media (max-width: 760px) { .guide-page { padding: 36px 0; } .guide-layout { grid-template-columns: 1fr; gap: 30px; } .guide-toc { position: static; padding: 18px; background: #eaf0e0; } }