.sections-header-nav { display: flex; align-items: center; gap: 24px; }
.sections-main { padding-top: 112px; padding-bottom: 88px; }
.sections-breadcrumbs { margin-bottom: 28px; color: var(--muted); font-size: 14px; }
.sections-breadcrumbs ol { display: flex; flex-wrap: wrap; gap: 8px 18px; margin: 0; padding: 0; list-style: none; }
.sections-breadcrumbs li + li::before { content: "/"; margin-right: 18px; color: var(--subtle); }
.sections-intro { max-width: 860px; margin-bottom: 48px; }
.sections-intro .section-heading { font-size: clamp(32px, 4.5vw, 58px); }
.sections-intro .section-lead { margin-top: 24px; max-width: 760px; }
.sections-proof { padding-left: 16px; border-left: 2px solid var(--border-strong); color: var(--muted); font-size: 14px; }
.sections-layout { display: grid; grid-template-columns: 216px minmax(0, 1fr); align-items: start; gap: 32px; }
.sections-nav { position: sticky; top: 106px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface); padding: 20px 16px; }
.sections-nav h2 { font: 600 16px var(--font-body); margin: 0 8px 14px; }
.sections-nav ol { display: grid; gap: 4px; }
.sections-nav a { display: block; padding: 7px 8px; border-radius: 6px; color: var(--muted); font-size: 14px; }
.sections-nav a:hover, .sections-nav a:focus-visible { color: var(--accent); background: rgb(var(--accent-rgb) / .06); }
.sections-content { display: grid; gap: 28px; min-width: 0; }
.app-section-card { padding: clamp(18px, 3vw, 30px); border: 1px solid var(--border); border-radius: 18px; background: var(--surface); scroll-margin-top: 106px; min-width: 0; }
.app-section-card h2 { margin-bottom: 18px; font-size: clamp(25px, 3vw, 34px); }
.app-section-card h3 { margin: 24px 0 12px; font: 600 17px var(--font-body); }
.app-section-card p { overflow-wrap: anywhere; }
.section-limitations { padding-left: 20px; list-style: disc; color: var(--muted); font-size: 14px; }
.section-limitations li + li { margin-top: 7px; }
.section-screenshot { margin: 24px 0 0; }
.section-screenshot button { display: block; width: 100%; padding: 0; border: 1px solid var(--border-strong); border-radius: 9px; overflow: hidden; background: var(--bg); }
.section-screenshot img { width: 100%; height: auto; }
.section-screenshot figcaption { margin-top: 10px; font-size: 13px; color: var(--muted); }
.section-screenshot-pending { border: 1px dashed var(--border-strong); border-radius: 9px; padding: 18px; color: var(--muted); }
.sections-start { border-top: 1px solid var(--border); margin-top: 44px; padding-top: 30px; }
.sections-start h2 { margin-bottom: 16px; font-size: 25px; }
.sections-start p { max-width: 800px; color: var(--muted); }
.sections-start .text-link { margin-left: 22px; }
.sections-lightbox { max-width: min(1500px, calc(100vw - 24px)); }
@media (max-width: 860px) {
  .sections-header-nav { gap: 14px; }
  .sections-layout { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .sections-nav { position: static; }
  .sections-nav ol { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .sections-main { padding-top: 96px; }
}
@media (max-width: 540px) {
  .sections-header-nav > .text-link { display: none; }
  .sections-header-nav .button { padding-inline: 12px; font-size: 13px; }
  .sections-main { padding-top: 88px; }
  .sections-intro { margin-bottom: 30px; }
  .sections-nav ol { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sections-start .text-link { display: block; margin: 18px 0 0; }
  .sections-lightbox { padding: 32px 8px 14px; }
}