:root {
  color-scheme: dark;
  --bg: #101312;
  --panel: #191e1b;
  --panel-light: #202722;
  --text: #f4f5ef;
  --muted: #b2b9b2;
  --accent: #b9f36b;
  --accent-dark: #1b2814;
  --line: #343b35;
  --max-width: 1120px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; line-height: 1.6; }
a { color: inherit; }
.site-header { min-height: 76px; padding: 0 max(24px, calc((100vw - var(--max-width))/2)); display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-size: 13px; font-weight: 900; letter-spacing: .12em; }
.brand-mark { display: grid; place-items: center; width: 36px; height: 36px; color: #101312; background: var(--accent); border-radius: 10px 3px 10px 3px; font-size: 14px; letter-spacing: -.05em; }
.brand-light { color: var(--muted); font-weight: 600; }
nav { display: flex; gap: 25px; }
nav a { color: var(--muted); font-size: 13px; text-decoration: none; }
nav a:hover, nav a:focus-visible { color: var(--accent); }
.section-wrap { width: min(var(--max-width), calc(100% - 48px)); margin-inline: auto; }
.hero { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 56px; padding-block: 76px 70px; }
.eyebrow { margin: 0 0 15px; color: var(--accent); font-size: 11px; font-weight: 850; letter-spacing: .17em; }
.status-dot { display: inline-block; width: 7px; height: 7px; margin-right: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 14px #b9f36b88; }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 20px; font-size: clamp(46px, 6.4vw, 78px); line-height: .98; letter-spacing: -.065em; }
h1 span { color: var(--accent); }
.hero-lead { max-width: 530px; color: var(--muted); font-size: 17px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; gap: 15px; padding: 0 20px; border: 1px solid transparent; border-radius: 7px; text-decoration: none; font-size: 13px; font-weight: 850; transition: transform .18s ease, background .18s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: #101312; background: var(--accent); }
.button-primary:hover { background: #d0ff91; }
.button-secondary { color: var(--text); border-color: #424a43; background: transparent; }
.button-secondary:hover { background: var(--panel); }
.disclaimer { margin: 16px 0 0; color: #8f9890; font-size: 11px; }
.hero-art { min-height: 365px; position: relative; overflow: hidden; isolation: isolate; border: 1px solid #394239; border-radius: 18px; background: radial-gradient(circle at 76% 20%, #384b2c 0, transparent 31%), linear-gradient(145deg, #252e27, #111512 68%); }
.hero-art::before { content: ""; position: absolute; inset: 0; opacity: .13; background-image: linear-gradient(#c8e6bc 1px, transparent 1px), linear-gradient(90deg, #c8e6bc 1px, transparent 1px); background-size: 36px 36px; transform: perspective(350px) rotateX(12deg) scale(1.2); transform-origin: bottom; }
.sun { position: absolute; top: 42px; right: 55px; width: 115px; height: 115px; border-radius: 50%; background: var(--accent); opacity: .92; box-shadow: 0 0 70px #b9f36b33; }
.ramp { position: absolute; bottom: 62px; width: 120%; height: 135px; transform: rotate(-14deg); border-radius: 50% 50% 0 0; }
.ramp-back { left: -10%; bottom: 26px; background: #48564a; }
.ramp-front { left: -5%; bottom: -20px; background: linear-gradient(150deg, #798779, #303a32 62%); border-top: 4px solid #a0b09e; }
.board { position: absolute; z-index: 2; width: 190px; height: 20px; top: 47%; left: 33%; transform: rotate(-24deg); border-radius: 50%; background: var(--accent); box-shadow: 0 9px 0 -4px #111, 0 16px 24px #0008; }
.board-grip { position: absolute; inset: 4px 13px; border-top: 2px dashed #283522; }
.wheel { position: absolute; top: 15px; width: 17px; height: 17px; border-radius: 50%; background: #111512; border: 3px solid #d2d7cb; }
.wheel-one { left: 28px; } .wheel-two { right: 28px; }
.art-label { position: absolute; z-index: 3; bottom: 18px; left: 20px; right: 20px; display: flex; justify-content: space-between; color: #dce5d9; font-size: 10px; font-weight: 800; letter-spacing: .16em; }
.art-label span { color: var(--accent); }
.quick-facts { display: grid; grid-template-columns: repeat(3, 1fr); border-block: 1px solid var(--line); }
.quick-facts > div { position: relative; padding: 25px 24px 23px 0; }
.quick-facts > div + div { padding-left: 24px; border-left: 1px solid var(--line); }
.fact-number, .step-index { display: block; margin-bottom: 10px; color: var(--accent); font-size: 11px; font-weight: 900; letter-spacing: .12em; }
.quick-facts strong { font-size: 14px; }
.quick-facts p { margin: 6px 0 0; color: var(--muted); font-size: 12px; }
.content-section { padding-block: 82px; }
.section-heading { max-width: 650px; margin-bottom: 30px; }
h2 { margin-bottom: 14px; font-size: clamp(30px, 4vw, 44px); line-height: 1.08; letter-spacing: -.045em; }
.section-heading > p:last-child, .section-intro { color: var(--muted); }
.steps-grid, .troubleshoot-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 15px; }
.info-card, .trouble-card { padding: 25px; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); }
.info-card h3, .trouble-card h3 { margin-bottom: 9px; font-size: 17px; }
.info-card p, .trouble-card p { margin-bottom: 0; color: var(--muted); font-size: 13px; }
.requirements-section { padding-block: 72px; background: #171c18; border-block: 1px solid var(--line); }
.requirements-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 70px; align-items: start; }
.checklist { display: grid; gap: 0; }
.check-row { display: flex; gap: 15px; padding: 17px 0; border-bottom: 1px solid var(--line); }
.check-row:first-child { padding-top: 0; }
.check-icon { flex: 0 0 25px; display: grid; place-items: center; width: 25px; height: 25px; border-radius: 50%; color: var(--accent); background: #b9f36b1b; font-weight: 900; }
.check-row strong { font-size: 14px; }
.check-row p { margin: 5px 0 0; color: var(--muted); font-size: 13px; }
.trouble-card { background: transparent; }
.faq-section { max-width: 850px; }
.faq-list { border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); }
summary { position: relative; padding: 19px 38px 19px 0; cursor: pointer; list-style: none; font-size: 14px; font-weight: 750; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 5px; color: var(--accent); font-size: 22px; top: 12px; }
details[open] summary::after { content: "−"; }
details p { max-width: 700px; margin: 0; padding: 0 30px 20px 0; color: var(--muted); font-size: 13px; }
.final-cta { padding-block: 42px; background: #b9f36b; color: #111610; }
.final-cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.final-cta .eyebrow { color: #35452a; }
.final-cta h2 { margin-bottom: 7px; font-size: 32px; }
.final-cta p:last-child { margin-bottom: 0; color: #35452a; font-size: 14px; }
.final-cta .button-primary { color: #efffe0; background: #111610; }
.final-cta .button-primary:hover { background: #2b3826; }
.site-footer { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 25px; padding-block: 28px; }
.site-footer > p { margin: 0; color: #8f9890; font-size: 10px; }
.copyright { text-align: right; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
@media (max-width: 760px) {
  .site-header { padding-inline: 20px; }
  nav { gap: 13px; }
  nav a { font-size: 11px; }
  .section-wrap { width: min(100% - 36px, var(--max-width)); }
  .hero { grid-template-columns: 1fr; gap: 32px; padding-block: 54px 48px; }
  .hero-art { min-height: 280px; }
  .quick-facts { grid-template-columns: 1fr; }
  .quick-facts > div, .quick-facts > div + div { padding: 18px 0; border-left: 0; }
  .quick-facts > div + div { border-top: 1px solid var(--line); }
  .steps-grid, .troubleshoot-grid { grid-template-columns: 1fr; }
  .requirements-layout { grid-template-columns: 1fr; gap: 25px; }
  .content-section, .requirements-section { padding-block: 56px; }
  .final-cta-inner { align-items: flex-start; flex-direction: column; }
  .site-footer { grid-template-columns: 1fr; gap: 14px; }
  .copyright { text-align: left; }
}
@media (max-width: 430px) {
  .site-header { align-items: flex-start; flex-direction: column; justify-content: center; padding-block: 14px; gap: 12px; }
  nav { width: 100%; justify-content: space-between; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .button { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}

/* Keyboard controls and mobile guidance */
.controls-table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); }
.controls-table { width: 100%; border-collapse: collapse; min-width: 590px; text-align: left; }
.controls-table th, .controls-table td { padding: 14px 18px; border-bottom: 1px solid var(--line); vertical-align: top; }
.controls-table th { color: var(--accent); background: var(--panel-light); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; }
.controls-table td { color: var(--muted); font-size: 13px; }
.controls-table td:first-child { color: var(--text); white-space: nowrap; }
.controls-table tbody tr:last-child td { border-bottom: 0; }
kbd { display: inline-block; min-width: 25px; margin: 1px 2px 1px 0; padding: 2px 7px; border: 1px solid #4a5549; border-bottom-width: 3px; border-radius: 5px; background: #252d26; color: var(--text); font: 700 12px/1.6 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; text-align: center; }
.controls-notes { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 15px; margin-top: 16px; }
.controls-notes .info-card { height: 100%; }
.controls-notes p { margin-bottom: 0; color: var(--muted); font-size: 13px; }
.section-footnote { margin: 18px 0 0; color: #8f9890; font-size: 12px; }
.mobile-section { padding-block: 76px; background: #171c18; border-block: 1px solid var(--line); }
.mobile-layout { display: grid; grid-template-columns: 1.1fr .9fr; gap: 64px; align-items: start; }
.mobile-layout h2 { max-width: 540px; }
.mobile-steps { display: grid; gap: 18px; margin: 28px 0 0; padding: 0; list-style: none; }
.mobile-steps li { display: flex; gap: 15px; }
.mobile-steps li > span { flex: 0 0 34px; display: grid; place-items: center; width: 34px; height: 34px; border-radius: 9px; color: var(--accent); background: #b9f36b18; font-size: 11px; font-weight: 900; }
.mobile-steps strong { font-size: 14px; }
.mobile-steps p { margin: 4px 0 0; color: var(--muted); font-size: 13px; }
.mobile-info-card { padding: 27px; border: 1px solid var(--line); border-radius: 13px; background: var(--bg); }
.mobile-info-card h3 { margin-bottom: 14px; font-size: 21px; }
.mobile-info-card ul { display: grid; gap: 11px; margin: 0; padding-left: 20px; color: var(--muted); font-size: 13px; }
.mobile-caveat { margin: 22px 0 0; padding-top: 17px; border-top: 1px solid var(--line); color: #d4d8cf; font-size: 12px; }
@media (max-width: 760px) {
  .controls-notes, .mobile-layout { grid-template-columns: 1fr; }
  .mobile-layout { gap: 30px; }
  .mobile-section { padding-block: 56px; }
  .controls-table th, .controls-table td { padding: 12px 13px; }
}

/* Optional: use a real PNG/JPG screenshot inside .hero-art.
   Keep the screenshot within a predictable frame instead of letting its
   original pixel dimensions enlarge the hero section. */
.hero-art:has(> img) {
  min-height: 0;
  height: clamp(250px, 32vw, 420px);
  aspect-ratio: 4 / 3;
  background: #0c1114;
}
.hero-art:has(> img)::before {
  display: none;
}
.hero-art > img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: contain;
  object-position: center;
}
.hero-art:has(> img) .art-label {
  left: 14px;
  right: 14px;
  bottom: 12px;
  padding: 8px 10px;
  border-radius: 5px;
  background: linear-gradient(90deg, #101312d9, #10131200);
}


/* Make the hero frame fit the screenshot */
.hero-art:has(img) {
  height: auto;
  min-height: 0;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  box-shadow: none;
  overflow: hidden;
}

/* Keep the screenshot at a suitable size */
.hero-art:has(img) img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 420px;
  object-fit: contain;
  border-radius: 12px;
}

/* Keep the label attached to the screenshot */
.hero-art:has(img) .art-label {
  position: absolute;
  left: 12px;
  bottom: 12px;
}


@media (max-width: 700px) {
  .hero-art:has(> img) {
    height: clamp(220px, 62vw, 340px);
  }
}