/* One product guide: overview, compact reference sections and persistent local navigation. */
.docs-intro { padding: 38px 0 34px; }
.docs-intro .crumb { margin-bottom: 26px; }
.docs-intro .eyebrow { font-size: 10px; }
.docs-intro h1 { font-size: clamp(30px, 3.8vw, 46px); line-height: 1.18; margin: 16px 0; max-width: 850px; }
.docs-intro p { color: var(--mut); font-size: 15px; line-height: 1.8; max-width: 820px; margin: 0; }
.docs-shortcuts { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 12px; margin-top: 26px; }
.docs-shortcuts a { display: flex; align-items: center; gap: 12px; padding: 16px; border: 1px solid var(--hair); border-radius: 10px; background: rgba(255,255,255,.02); }
.docs-shortcuts a:hover { border-color: var(--or); }
.docs-shortcuts span { font-size: 20px; color: var(--or2); }
.docs-shortcuts b { font-size: 12px; font-weight: 500; }
.features-intro { padding: 58px 0 35px; }
.features-intro h1 { font-size: clamp(34px,4.2vw,57px); white-space: pre-line; line-height: 1.15; margin: 20px 0; max-width: 1080px; }
.features-intro .lede { color: var(--mut); font-size: 16px; line-height: 1.9; max-width: 860px; }
.features-intro .eyebrow { font-size: 11px; }
.features-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.features-actions .btn { font-size: 13px; }
.features-tools { padding: 15px 0 36px; }
.features-overview .guide-tech-card h2 { font-size: 22px; line-height: 1.3; margin-bottom: 13px; }
.features-overview .guide-tech-card:nth-child(-n+2) { background: linear-gradient(135deg,rgba(255,122,21,.045),rgba(255,255,255,.015)); border-color: rgba(255,122,21,.22); }
.features-overview .guide-tech-card:nth-child(n+3) .guide-tech-icon { color: var(--cy2); }
.features-scope { color: var(--mut); font-size: 12px; margin: 22px 0 0; }
.features-service { padding: 34px 0 44px; border-top: 1px solid var(--hair); }
.features-service-heading { max-width: 730px; margin-bottom: 30px; }
.features-service-heading .eyebrow { font-size: 10px; }
.features-service-heading h2 { font-size: 32px; line-height: 1.25; margin: 15px 0; }
.features-service-heading p { color: var(--mut); font-size: 14px; line-height: 1.8; }
.features-service-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 0 36px; }
.features-service-grid article { display: flex; gap: 20px; border-top: 1px solid var(--hair); padding: 24px 0; }
.service-index { color: var(--or2); font-size: 11px; padding-top: 4px; }
.features-service-grid h3 { font-size: 17px; line-height: 1.4; }
.features-service-grid p { font-size: 13px; color: var(--mut); line-height: 1.8; margin: 10px 0 0; }
.features-free { padding: 0 0 60px; }
.guide-hero { padding: 66px 0 52px; }
.guide-hero-grid { display: grid; grid-template-columns: 1.25fr 1fr; gap: 48px; align-items: center; }
.guide-hero h1 { font-size: clamp(36px, 4.3vw, 58px); line-height: 1.12; white-space: pre-line; margin: 18px 0; }
.guide-hero .lede { font-size: 16px; line-height: 1.8; color: var(--mut); max-width: 580px; }
.guide-hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.guide-hero-actions .btn { font-size: 13px; padding: 12px 16px; }
.guide-diagram { border: 1px solid var(--hair); border-radius: 22px; padding: 27px 24px 20px; background: linear-gradient(150deg, rgba(255,255,255,.045), rgba(8,7,12,.85)); position: relative; overflow: hidden; }
.guide-diagram::before { content: ''; display: block; position: absolute; width: 120px; height: 2px; top: 0; left: 24px; background: var(--or); }
.guide-diagram-title { font-size: 12px; color: var(--mut); margin: 0 0 27px; }
.guide-signal { display: flex; align-items: center; }
.guide-signal > div { text-align: center; flex: 1; min-width: 0; }
.guide-signal svg { display: block; width: 32px; height: 32px; margin: 0 auto 14px; color: var(--or2); }
.guide-signal strong { display: block; font-size: 11px; font-weight: 600; min-height: 34px; line-height: 1.5; }
.guide-signal small { display: block; color: var(--mut); font-size: 9px; white-space: nowrap; }
.guide-wire { height: 1px; flex: 0 0 24px; background: var(--hair); align-self: flex-start; margin: 16px 0 0; position: relative; }
.guide-wire::after { content: ''; width: 4px; height: 4px; border-radius: 50%; background: var(--or); position: absolute; right: 0; top: -1.5px; }
.guide-engine-marks { border-top: 1px solid var(--hair); margin-top: 28px; padding-top: 20px; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.guide-engine-marks strong { font-size: 26px; letter-spacing: -.06em; }
.guide-engine-marks strong span { font-weight: 300; color: var(--mut2); margin: 0 4px; }
.guide-engine-marks > span { font-size: 10px; color: var(--cy2); }
.guide-diagram-note { color: var(--mut2); font-size: 10px; margin: 15px 0 0; line-height: 1.7; }
.guide-layout { display: grid; grid-template-columns: 174px minmax(0,1fr); gap: 44px; align-items: start; }
.guide-rail { position: sticky; top: 94px; padding: 14px 0 24px; }
.guide-rail > p { font-size: 9px; letter-spacing: .12em; color: var(--mut2); margin: 0 0 18px 14px; }
.guide-rail nav { display: grid; }
.guide-rail nav a { display: flex; align-items: center; gap: 12px; padding: 13px 12px; border-left: 2px solid var(--hair); font-size: 12px; color: var(--mut); transition: color .15s, background .15s; }
.guide-rail nav a > span:first-child { font-size: 10px; color: var(--mut2); }
.guide-rail nav a:hover { color: var(--text); }
.guide-rail nav a[aria-current] { border-color: var(--or); color: var(--text); background: linear-gradient(90deg, rgba(255,122,21,.075), transparent); }
.guide-rail nav a[aria-current] > span:first-child { color: var(--or2); }
.guide-price-link { display: inline-block; margin: 26px 0 0 14px; font-size: 12px; color: var(--or2); }
.guide-content { min-width: 0; }
.guide-section { padding: 16px 0 58px; scroll-margin-top: 92px; }
.guide-section + .guide-section { border-top: 1px solid var(--hair); padding-top: 46px; }
.guide-section-head { display: grid; grid-template-columns: 38px minmax(0,1fr); gap: 15px; margin-bottom: 28px; }
.guide-number { color: var(--mut2); font-size: 12px; padding-top: 5px; border-top: 1px solid var(--or); }
.guide-section-head .eyebrow { font-size: 10px; letter-spacing: .14em; margin-bottom: 12px; }
.guide-section-head h2 { font-size: clamp(25px, 2.8vw, 35px); line-height: 1.2; white-space: pre-line; }
.guide-section-head p, .guide-section-intro { font-size: 14px; color: var(--mut); line-height: 1.8; margin: 14px 0 0; }
.guide-section-intro { margin: -8px 0 25px 53px; }
.guide-section .engine-card { padding: 18px; gap: 14px; }
.guide-section .engine-mark { font-size: 18px; }
.guide-section .engine-card h2 { font-size: 18px; }
.guide-section .engine-card .badge-ok { font-size: 9px; padding: 4px 7px; }
.guide-section .coverage-head { margin-top: 28px; }
.guide-section .coverage-head h2 { font-size: 20px; }
.guide-section .coverage-head .eyebrow { display: none; }
.guide-section .coverage-head p { font-size: 12px; }
.guide-section .coverage-search { max-width: 300px; }
.guide-section .coverage-row { font-size: 12px; }
.guide-tech-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 16px; }
.guide-tech-card { padding: 25px; border: 1px solid var(--hair); border-radius: 16px; background: rgba(255,255,255,.018); }
.guide-tech-icon { display: inline-flex; width: 32px; height: 32px; color: var(--or2); margin-bottom: 18px; }
.guide-tech-card:nth-child(2) .guide-tech-icon { color: var(--cy2); }
.guide-tech-card h3 { font-size: 18px; line-height: 1.35; margin-bottom: 12px; }
.guide-tech-card p { font-size: 13px; line-height: 1.8; color: var(--mut); margin: 0; }
.guide-disclosure { border: 1px solid var(--hair); border-radius: 12px; margin-top: 18px; overflow: hidden; }
.guide-disclosure > summary { padding: 18px 20px; color: var(--mut); cursor: pointer; font-size: 13px; }
.guide-disclosure[open] > summary { color: var(--or2); border-bottom: 1px solid var(--hair); }
.guide-tech-details { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 28px; padding: 24px; }
.guide-tech-details h3 { font-size: 16px; line-height: 1.4; }
.guide-tech-details .icon { display: none; }
.guide-tech-details p, .guide-tech-details li { color: var(--mut); font-size: 12px; line-height: 1.8; }
.guide-comparison > :not(summary) { margin-left: 20px; margin-right: 20px; }
.guide-comparison .adapter-limits { margin-bottom: 22px; }
.guide-comparison h3 { font-size: 16px; }
.guide-section .adapter-grid { gap: 16px; }
.guide-section .adapter-visual { height: 184px; }
.guide-section .adapter-copy { padding: 21px; }
.guide-section .adapter-copy > h2 { font-size: 19px; }
.guide-section .adapter-card { scroll-margin-top: 100px; }
.guide-steps { padding: 0; margin: 0; list-style: none; display: grid; }
.guide-steps li { display: grid; grid-template-columns: 40px minmax(0,1fr); gap: 18px; padding: 22px 0; border-bottom: 1px solid var(--hair2); }
.guide-step-number { display: grid; place-items: center; width: 36px; height: 36px; font-size: 11px; color: var(--or2); border: 1px solid rgba(255,122,21,.25); border-radius: 50%; }
.guide-steps h3 { font-size: 17px; line-height: 1.4; }
.guide-steps p { font-size: 13px; line-height: 1.8; color: var(--mut); margin: 9px 0 0; }
.guide-start-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 24px; padding-top: 24px; }
.guide-start-actions a { font-size: 13px; }
.guide-section .faq summary { font-size: 14px; line-height: 1.65; }
.guide-section .faq p { font-size: 13px; }
.guide-end { padding: 0 0 72px; }
.guide-help { display: flex; justify-content: space-between; align-items: center; gap: 30px; border-top: 1px solid rgba(255,122,21,.25); border-bottom: 1px solid var(--hair); padding: 38px 0; }
.guide-help h2 { font-size: 25px; line-height: 1.3; }
.guide-help p { color: var(--mut); max-width: 690px; font-size: 14px; line-height: 1.8; margin: 14px 0 0; }
.guide-page a:focus-visible, .guide-page summary:focus-visible { outline: 2px solid var(--or2); outline-offset: 5px; }
@media (max-width: 1050px) {
  .guide-hero-grid { gap: 28px; }
  .guide-layout { grid-template-columns: 155px minmax(0,1fr); gap: 26px; }
  .guide-section .engine-strip { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
  .guide-hero { padding: 40px 0; }
  .guide-hero-grid { grid-template-columns: 1fr; }
  .guide-hero h1 { font-size: 44px; }
  .guide-diagram { max-width: 580px; width: 100%; }
  .guide-layout { display: block; }
  .guide-rail { top: 66px; z-index: 20; padding: 0; background: rgba(8,7,12,.96); border-top: 1px solid var(--hair); border-bottom: 1px solid var(--hair); margin-bottom: 28px; }
  .guide-rail > p, .guide-price-link { display: none; }
  .guide-rail nav { display: flex; overflow-x: auto; scrollbar-width: thin; }
  .guide-rail nav a { flex: 0 0 auto; border-left: 0; border-bottom: 2px solid transparent; padding: 14px 13px; gap: 8px; font-size: 11px; }
  .guide-rail nav a[aria-current] { background: none; border-color: var(--or); }
  .guide-section, .guide-section .adapter-card { scroll-margin-top: 132px; }
  .guide-section .engine-strip { grid-template-columns: repeat(2,minmax(0,1fr)); }
}
@media (max-width: 600px) {
  .docs-intro { padding-top: 28px; }
  .docs-intro h1 { font-size: 30px; }
  .docs-intro p { font-size: 13px; }
  .docs-shortcuts { grid-template-columns: repeat(2,minmax(0,1fr)); gap: 10px; }
  .docs-shortcuts a { padding: 13px 11px; gap: 9px; }
  .docs-shortcuts b { font-size: 11px; }
  .features-intro { padding-top: 32px; }
  .features-intro h1 { font-size: 33px; }
  .features-intro .lede { font-size: 14px; }
  .features-actions .btn { width: 100%; }
  .features-overview .guide-tech-card h2 { font-size: 21px; }
  .features-service-grid { grid-template-columns: 1fr; }
  .features-service-heading h2 { font-size: 27px; }
  .guide-hero h1 { font-size: 34px; }
  .guide-hero .lede { font-size: 14px; }
  .guide-hero .eyebrow { font-size: 10px; letter-spacing: .12em; }
  .guide-hero-actions { gap: 10px; }
  .guide-hero-actions .btn { flex: 1 1 140px; }
  .guide-diagram { padding: 23px 17px 18px; }
  .guide-wire { flex-basis: 17px; }
  .guide-signal small { font-size: 8px; }
  .guide-signal strong { font-size: 10px; }
  .guide-section-head { grid-template-columns: 26px minmax(0,1fr); gap: 12px; }
  .guide-section-head h2 { font-size: 26px; }
  .guide-section-head p, .guide-section-intro { font-size: 13px; }
  .guide-section-intro { margin-left: 38px; }
  .guide-section { padding-bottom: 36px; }
  .guide-section + .guide-section { padding-top: 32px; }
  .guide-section .engine-strip, .guide-tech-grid, .guide-tech-details { grid-template-columns: 1fr; }
  .guide-section .engine-card { grid-template-columns: 54px minmax(0,1fr); gap: 10px 16px; }
  .guide-section .engine-card .badge-ok { grid-column: 2; justify-self: start; }
  .guide-section .coverage-head { align-items: stretch; flex-direction: column; }
  .guide-section .coverage-search { width: 100%; max-width: none; }
  .guide-tech-card { padding: 22px; }
  .guide-section .adapter-copy { padding: 20px; }
  .guide-section .adapter-visual { height: 180px; }
  .guide-section .adapter-copy > h2 { min-height: 0; }
  .guide-disclosure > summary { font-size: 12px; padding: 16px; }
  .guide-help { flex-direction: column; align-items: flex-start; gap: 20px; }
  .guide-help h2 { font-size: 23px; }
  .guide-help p { font-size: 13px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}