@font-face {
  font-family: Michroma;
  src: url("assets/fonts/Michroma-Regular.ttf") format("truetype");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Sans";
  src: url("assets/fonts/IBMPlexSans-Variable.ttf") format("truetype");
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}

:root {
  color-scheme: dark;
  --ground: #03050a;
  --panel: #0b141c;
  --text: #e9f4f7;
  --muted: #a2b6c1;
  --cyan: #5ff3ff;
  --line: #233742;
  font-family: "IBM Plex Sans", system-ui, sans-serif;
  font-synthesis: none;
  color: var(--text);
  background: var(--ground);
}

* { box-sizing: border-box; }
body { margin: 0; background: radial-gradient(ellipse at 80% 18%, #0d28333d, transparent 43%); }
a { color: var(--cyan); text-underline-offset: 4px; }
a:focus-visible, summary:focus-visible { outline: 3px solid #ffffff; outline-offset: 6px; }
p, h1, h2, h3 { margin: 0; }
img, svg { display: block; }
.page { width: min(1120px, calc(100% - 96px)); margin-inline: auto; }
.skip-link { position: absolute; top: 16px; left: 16px; z-index: 10; padding: 12px 20px; background: var(--ground); transform: translateY(-200%); }
.skip-link:focus { transform: none; }
.masthead { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-block: 32px; border-bottom: 1px solid var(--line); }
.wordmark { display: inline-flex; align-items: center; gap: 15px; text-decoration: none; color: var(--text); }
.wordmark span { font: 400 15px/1.4 Michroma, sans-serif; text-transform: uppercase; letter-spacing: 0.14em; }
.edition, .eyebrow, .scene-label { text-transform: uppercase; font-size: 11px; font-weight: 500; letter-spacing: 0.19em; line-height: 1.6; }
.edition { color: var(--muted); }
.hero { display: grid; grid-template-columns: 1.2fr 0.8fr; align-items: center; gap: 36px; padding-block: 70px 58px; }
.intro { position: relative; z-index: 1; }
.eyebrow { color: var(--cyan); }
.intro .eyebrow { display: flex; align-items: center; gap: 10px; margin-bottom: 24px; }
.intro .eyebrow span { width: 5px; height: 5px; background: var(--cyan); }
h1 { font: 400 clamp(26px, 3.15vw, 40px)/1.5 Michroma, sans-serif; letter-spacing: -0.045em; }
.lead { margin-top: 22px; color: var(--muted); font-size: 18px; line-height: 1.65; }
.download { display: inline-flex; align-items: center; justify-content: center; gap: 15px; min-height: 60px; padding: 15px 24px; margin-top: 32px; background: var(--cyan); color: #032029; font-size: 17px; font-weight: 600; line-height: 1.4; text-decoration: none; border: 1px solid var(--cyan); box-shadow: 0 0 30px #5ff3ff10; }
.download:hover { background: #c3faff; border-color: #c3faff; }
.download svg { flex-shrink: 0; }
.download-detail { margin-top: 14px; font-size: 12px; line-height: 1.8; color: var(--muted); }
.download-detail span { margin-inline: 6px; color: #627d8d; }
.brand-scene { position: relative; display: grid; place-items: center; min-height: 370px; overflow: hidden; isolation: isolate; }
.hero-mark { position: relative; width: min(72%, 300px); height: auto; z-index: 1; }
.scene-grid { position: absolute; inset: 42% -80% -150%; z-index: -1; transform: perspective(340px) rotateX(58deg); transform-origin: top; background-image: linear-gradient(#26425080 1px, transparent 1px), linear-gradient(90deg, #26425080 1px, transparent 1px); background-size: 58px 58px; mask-image: linear-gradient(transparent, #000 20%, transparent 66%); }
.scene-line { position: absolute; height: 1px; width: 100%; background: linear-gradient(90deg, transparent, #5ff3ff62, transparent); z-index: -1; }
.scene-line-one { top: 27%; }
.scene-line-two { top: 74%; }
.scene-label { position: absolute; bottom: 8px; color: #91aab8; font-size: 9px; letter-spacing: 0.25em; }
.requirements { display: grid; grid-template-columns: repeat(3, 1fr); padding-block: 29px; border-block: 1px solid var(--line); }
.requirements > div { padding-inline: 32px; border-left: 1px solid var(--line); }
.requirements > div:first-child { padding-left: 0; border-left: 0; }
.metric { font: 400 25px/1.5 Michroma, sans-serif; letter-spacing: -0.03em; white-space: nowrap; }
.metric span { font-size: 14px; color: var(--muted); }
.requirements p { margin-top: 7px; color: var(--muted); font-size: 14px; line-height: 1.5; }
.publisher-note { display: flex; align-items: flex-start; gap: 15px; padding: 22px 26px; margin-top: 30px; background: var(--panel); border-left: 2px solid #709dae; }
.note-icon { display: grid; place-items: center; flex: 0 0 19px; height: 19px; border: 1px solid #94bfcb; border-radius: 50%; color: #b6d3dc; font-size: 12px; font-weight: 600; margin-top: 3px; }
.publisher-note h2 { font-size: 15px; line-height: 1.5; font-weight: 600; }
.publisher-note p { margin-top: 5px; color: var(--muted); font-size: 14px; line-height: 1.6; max-width: 900px; }
.getting-started { padding-block: 55px 48px; }
.section-heading h2 { font-size: 25px; line-height: 1.4; font-weight: 500; margin-top: 10px; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 35px; padding: 0; margin: 28px 0 0; list-style: none; }
.steps li { display: flex; align-items: flex-start; gap: 14px; }
.step-number { color: var(--cyan); font: 400 12px/1.7 Michroma, sans-serif; padding-top: 2px; }
.steps h3 { font-size: 17px; line-height: 1.5; font-weight: 500; }
.steps p { color: var(--muted); margin-top: 8px; font-size: 14px; line-height: 1.65; }
.steps strong { color: #d0e0e8; font-weight: 500; }
.preview-note { color: var(--muted); border-top: 1px solid var(--line); margin-top: 32px; padding-top: 20px; font-size: 13px; line-height: 1.6; }
footer { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; border-top: 1px solid var(--line); padding-block: 25px 36px; color: var(--muted); font-size: 12px; line-height: 1.7; }
footer p span { margin-inline: 9px; color: #647f8c; }
.credits { text-align: right; }
.credits summary { cursor: pointer; }
.credits a { display: block; margin-top: 8px; }

@media (min-width: 1400px) {
  .hero { padding-block: 85px 70px; }
}

@media (max-width: 900px) {
  .page { width: calc(100% - 56px); }
  .hero { grid-template-columns: 1fr 0.68fr; gap: 18px; padding-block: 55px 45px; }
  h1 { font-size: 28px; }
  .brand-scene { min-height: 300px; }
  .hero-mark { width: 88%; }
  .steps { grid-template-columns: 1fr; gap: 26px; }
  .steps p { max-width: 65ch; margin-top: 4px; }
}

@media (max-width: 640px) {
  .page { width: calc(100% - 40px); }
  .masthead { gap: 12px; padding-block: 23px; }
  .wordmark { gap: 10px; }
  .wordmark img { width: 33px; height: 33px; }
  .wordmark span { font-size: 11px; letter-spacing: 0.08em; }
  .edition { max-width: 70px; text-align: right; font-size: 9px; }
  .hero { display: block; padding-block: 36px; }
  .brand-scene { display: none; }
  h1 { font-size: clamp(22px, 5.2vw, 32px); line-height: 1.55; }
  .intro .eyebrow { font-size: 10px; letter-spacing: 0.14em; margin-bottom: 18px; }
  .lead { font-size: 16px; margin-top: 17px; }
  .download { width: 100%; padding-inline: 14px; margin-top: 26px; font-size: 16px; }
  .download-detail { font-size: 11px; }
  .requirements { padding-block: 23px; gap: 20px 0; grid-template-columns: 1fr 1fr; }
  .requirements > div { padding-inline: 18px; }
  .requirements > div:last-child { grid-column: 1 / -1; padding: 16px 0 0; border-left: 0; border-top: 1px solid var(--line); display: flex; align-items: baseline; gap: 16px; }
  .requirements > div:last-child p { max-width: 180px; }
  .metric { font-size: 21px; }
  .metric span { font-size: 12px; }
  .requirements p { font-size: 12px; }
  .publisher-note { gap: 12px; padding: 18px 16px; margin-top: 24px; }
  .publisher-note p { font-size: 13px; }
  .getting-started { padding-block: 35px; }
  .section-heading h2 { font-size: 23px; }
  footer { gap: 18px; font-size: 11px; }
}

@media (forced-colors: active) {
  .brand-scene { display: none; }
  .hero { grid-template-columns: 1fr; }
  .download, .publisher-note { border: 1px solid ButtonText; }
  .download { color: LinkText; background: Canvas; }
  a:focus-visible, summary:focus-visible { outline-color: Highlight; }
}