/* Shared tutorial and illustrated user guide. Existing product styles stay intact. */
.desktop-nav { gap: 24px; white-space: nowrap; }
.nav-download { white-space: nowrap; }
.tutorial-section { padding-bottom: 0; }
.tutorial-player { overflow: hidden; border: 1px solid #40543b; border-radius: 10px; background: #10191b; }
.tutorial-heading, .tutorial-controls { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 18px 24px; }
.tutorial-heading strong { font-size: 16px; font-weight: 500; }
.tutorial-heading > span, .tutorial-controls p { color: var(--muted); font-size: 12px; }
.tutorial-player video { display: block; width: 100%; aspect-ratio: 16 / 9; background: #050a0d; }
.tutorial-controls { border-top: 1px solid var(--line); }
.tutorial-controls label { display: flex; align-items: center; gap: 10px; white-space: nowrap; font-size: 12px; }
.tutorial-controls select { background: #17251d; color: var(--accent); border: 1px solid #40543b; border-radius: 5px; font: inherit; padding: 8px 12px; }
.tutorial-controls select:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.tutorial-error { padding: 0 24px 18px; color: #efc68c; font-size: 13px; }
.tutorial-error a { text-decoration: underline; }
.tutorial-foot { display: flex; justify-content: space-between; align-items: baseline; gap: 22px; margin-top: 16px; }
.tutorial-foot p { font-size: 12px; color: var(--muted); }
.guide-header .header-inner { justify-content: space-between; }
.guide-header nav { display: flex; align-items: center; gap: 24px; font-size: 13px; }
.guide-header nav a:hover { color: var(--accent); }
.guide-hero { padding-block: 64px 38px; }
.guide-hero h1 { font-size: clamp(34px, 4vw, 52px); line-height: 1.3; letter-spacing: -1px; }
.guide-lead { color: var(--muted); margin: 20px 0 25px; }
.guide-hero .hero-actions { margin-top: 0; flex-wrap: wrap; }
.guide-layout { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 48px; padding-bottom: 70px; align-items: start; }
.guide-toc { position: sticky; top: 112px; display: grid; gap: 5px; border: 1px solid var(--line); border-radius: 8px; padding: 14px; background: var(--surface); }
.guide-toc a { display: block; padding: 9px 12px; color: #bac8bf; font-size: 13px; border-radius: 4px; }
.guide-toc a:hover { background: #b6f58a12; color: var(--accent); }
.guide-article { min-width: 0; }
.guide-block { padding: 30px 0 40px; border-top: 1px solid var(--line); scroll-margin-top: 20px; }
.guide-block h2 { font-size: 27px; letter-spacing: -.5px; margin-bottom: 20px; }
.guide-block h2 span { color: var(--accent); font: 15px Consolas, monospace; margin-right: 12px; }
.guide-block ol { padding-left: 24px; margin: 0; color: #c1cbc6; }
.guide-block li { margin-bottom: 12px; padding-left: 4px; }
.guide-block strong { color: var(--text); font-weight: 600; }
.guide-block figure { margin-top: 24px; }
.guide-shot { display: block; width: 100%; border: 1px solid #405044; border-radius: 6px; overflow: hidden; }
.guide-shot img { width: 100%; height: auto; }
.guide-block figcaption { color: var(--muted); font-size: 11px; margin-top: 8px; }
.guide-note { margin-top: 20px; border-left: 2px solid var(--accent); padding: 10px 16px; background: #b6f58a07; color: #b7c9b3; font-size: 13px; }
.guide-state-list { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 20px 0; }
.guide-state-list > div { padding: 16px; border: 1px solid var(--line); border-radius: 6px; }
.guide-state-list dt { color: var(--accent); margin-bottom: 6px; }
.guide-state-list dd { margin: 0; color: var(--muted); font-size: 13px; }
.guide-end { padding: 25px; border: 1px solid #40543b; border-radius: 8px; background: #152017; }
.guide-end p { margin-top: 8px; color: var(--muted); font-size: 13px; }
.guide-end a { color: var(--accent); }
@media (max-width: 1150px) and (min-width: 901px) { .desktop-nav { gap: 17px; font-size: 12px; } .header-inner { gap: 16px; } }
@media (max-width: 900px) { .guide-layout { grid-template-columns: 1fr; gap: 28px; } .guide-toc { position: static; grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 600px) {
  .tutorial-section { padding-bottom: 0; }
  .tutorial-heading, .tutorial-controls { padding: 13px 15px; flex-wrap: wrap; gap: 8px; }
  .tutorial-heading strong { font-size: 14px; }
  .tutorial-heading > span, .tutorial-controls p { font-size: 11px; }
  .tutorial-controls label { margin-top: 4px; }
  .tutorial-foot { display: grid; gap: 10px; }
  .tutorial-foot p { font-size: 11px; }
  .tutorial-error { padding-inline: 15px; }
  .guide-header nav { gap: 14px; font-size: 11px; }
  .guide-hero { padding-block: 40px 28px; }
  .guide-lead { font-size: 13px; }
  .guide-toc { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 3px; padding: 10px; }
  .guide-toc a { font-size: 12px; padding: 9px; }
  .guide-block h2 { font-size: 23px; }
  .guide-block li { font-size: 14px; }
  .guide-state-list { grid-template-columns: 1fr; }
}
@media print {
  :root { color-scheme: light; }
  body { background: white; color: black; }
  .guide-header, .guide-toc, .guide-hero .hero-actions, .guide-footer { display: none; }
  .guide-layout { display: block; }
  .guide-block, .guide-note, .guide-end { background: white; color: black; }
  .guide-block li, .guide-block strong, .guide-state-list dd, .guide-lead { color: black; }
  .guide-block figure, .guide-state-list > div { break-inside: avoid; }
}