:root {
  color-scheme: dark;
  --bg: #101211;
  --surface: #171b18;
  --raised: #1d231f;
  --ink: #eff0e9;
  --soft: #b2bab2;
  --muted: #929d94;
  --line: #303a32;
  --accent: #c5e99b;
  --lilac: #b7a0ed;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 105px; }
body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 Inter, "Segoe UI", system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { cursor: pointer; }
a:focus-visible, button:focus-visible, [tabindex="0"]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 5px;
}
::selection { color: var(--bg); background: var(--accent); }
img { display: block; max-width: 100%; height: auto; }
figure, p, h1, h2, h3 { margin: 0; }
h1, h2, h3 { line-height: 1.12; }
h1, h2 { letter-spacing: -0.05em; }
h2 { font-size: clamp(2.2rem, 3.65vw, 3.4rem); font-weight: 650; }
h3 { font-size: 1.05rem; font-weight: 650; }
p { color: var(--soft); }
[hidden] { display: none !important; }
.wrap { width: min(1280px, calc(100% - 80px)); margin-inline: auto; }
.section { padding-block: 105px; }
.eyebrow {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 24px;
  color: var(--muted);
  font: 11px/1.6 var(--mono);
  letter-spacing: 0.075em;
}
.anchor { scroll-margin-top: 105px; }
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}
.skip-link {
  position: fixed;
  top: 12px;
  left: 16px;
  z-index: 50;
  padding: 10px 18px;
  transform: translateY(-160%);
  border-radius: 5px;
  color: var(--bg);
  background: var(--accent);
}
.skip-link:focus { transform: none; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(16, 18, 17, 0.96);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 32px;
  align-items: center;
  min-height: 76px;
}
.brand { display: inline-flex; width: fit-content; align-items: center; gap: 9px; }
.brand > span { font-size: 29px; font-weight: 650; letter-spacing: -0.065em; }
.brand-suffix { margin-left: 9px; color: var(--muted); font: 10px var(--mono); letter-spacing: 0.06em; }
.main-nav { display: flex; align-items: center; gap: 34px; }
.main-nav a, .source-link { display: inline-flex; align-items: center; min-height: 44px; font-size: 13px; }
.main-nav a { color: var(--soft); }
.main-nav a:hover, .footer-group a:hover { color: var(--accent); }
.source-link { justify-self: end; gap: 20px; }
.source-link span { color: var(--accent); }
.hero {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
  align-items: center;
  padding-block: 92px 84px;
}
.hero > *, .section-heading > *, .models-grid > *, .review-grid > *, .library-grid > * { min-width: 0; }
.status-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
.hero h1 { font-size: clamp(3rem, 4.75vw, 4.7rem); line-height: 1.08; font-weight: 700; }
.hero h1 span { color: var(--accent); font-family: Georgia, "Times New Roman", serif; font-style: italic; font-weight: 400; }
.hero-intro { max-width: 440px; margin-top: 26px; font-size: 17px; line-height: 1.8; }
.actions { display: flex; flex-wrap: wrap; gap: 25px; align-items: center; margin-top: 31px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  min-height: 50px;
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: 5px;
  font-size: 13px;
  font-weight: 650;
  transition: background 150ms ease;
}
.button-primary { background: var(--accent); color: #172411; }
.button-primary:hover { background: #daf4ba; }
.button-dark { background: #152015; color: var(--ink); }
.button-dark:hover { background: #2c3b29; }
.text-link { display: inline-flex; align-items: center; gap: 15px; min-height: 44px; font-size: 13px; font-weight: 550; }
.text-link span { color: var(--accent); }
.text-link:hover { color: var(--accent); }
.platform-note { margin-top: 17px; font-size: 12px; color: var(--muted); }
.platform-note a { text-decoration: underline; text-underline-offset: 3px; }
.hero-figure { min-width: 0; }
.image-label {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 13px;
  color: var(--muted);
  font: 9px var(--mono);
  letter-spacing: 0.055em;
}
.tiny-mark { color: var(--accent); border: 1px solid var(--line); padding: 4px 7px; }
.image-label-end { margin-left: auto; font-size: 8px; }
.screenshot-link {
  position: relative;
  display: block;
  overflow: hidden;
  border: 1px solid #3a413b;
  border-radius: 7px;
  background: #12151a;
}
.hero-figure .screenshot-link { box-shadow: 0 22px 70px rgba(0, 0, 0, 0.28); }
.screenshot-link img { width: 100%; }
.image-expand {
  position: absolute;
  right: 10px;
  top: 10px;
  display: grid;
  width: 29px;
  height: 29px;
  place-items: center;
  border: 1px solid #566054;
  border-radius: 4px;
  background: #121a13;
  color: var(--accent);
  line-height: 1;
}
.screenshot-link:hover .image-expand { color: var(--bg); background: var(--accent); }
figcaption { padding-top: 14px; color: var(--muted); font-size: 12px; line-height: 1.6; }
.fundamentals { display: grid; grid-template-columns: repeat(3, 1fr); border-block: 1px solid var(--line); }
.fundamentals > div { display: flex; align-items: flex-start; gap: 17px; padding: 29px 22px; }
.fundamentals > div:first-child { padding-left: 0; }
.fundamentals > div + div { border-left: 1px solid var(--line); }
.fundamental-number { margin-top: 2px; color: var(--accent); font: 11px var(--mono); }
.fundamentals strong { display: block; margin-bottom: 4px; color: var(--ink); font-size: 14px; font-weight: 550; }
.fundamentals p > span { display: block; font-size: 12px; color: var(--muted); }
.section-heading { display: grid; grid-template-columns: 1fr 0.9fr; gap: 80px; align-items: end; margin-bottom: 37px; }
.section-heading > p { max-width: 480px; padding-bottom: 3px; font-size: 15px; }
.prompt-bar {
  display: flex;
  align-items: center;
  gap: 17px;
  padding: 18px 22px;
  margin-bottom: 24px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
}
.prompt-marker { color: var(--lilac); font-size: 25px; }
.prompt-bar p { flex: 1; color: var(--ink); font-size: 13px; }
.copy-button {
  flex-shrink: 0;
  min-height: 40px;
  min-width: 110px;
  padding: 8px 14px;
  border: 1px solid #505b50;
  border-radius: 4px;
  color: var(--soft);
  background: transparent;
  font-size: 11px;
}
.copy-button:hover { color: var(--ink); border-color: var(--accent); }
.tour { display: grid; grid-template-columns: 0.7fr 1.65fr; gap: 38px; align-items: start; }
.tour-tabs { display: grid; gap: 6px; }
.tour-tab {
  display: grid;
  grid-template-columns: 22px 1fr 15px;
  gap: 11px;
  align-items: start;
  min-height: 123px;
  padding: 24px 18px 24px 13px;
  border: 1px solid transparent;
  border-radius: 6px;
}
.tour-tab:hover { background: var(--surface); }
.tour-tab[aria-selected="true"] { border-color: var(--line); background: var(--raised); }
.tab-number { color: var(--muted); font: 10px/1.9 var(--mono); }
.tour-tab strong { display: block; margin-bottom: 10px; color: var(--ink); font-size: 19px; font-weight: 550; letter-spacing: -0.02em; }
.tour-tab > span > span { display: block; color: var(--muted); font-size: 12px; line-height: 1.8; }
.tab-arrow { color: var(--muted); }
.tour-tab[aria-selected="true"] .tab-number, .tour-tab[aria-selected="true"] .tab-arrow { color: var(--accent); }
.tour-panels { min-width: 0; }
.tour-panel + .tour-panel { margin-top: 24px; }
.tour.enhanced .tour-panel { margin-top: 0; }
.tour-shot { aspect-ratio: 16 / 10; }
.tour-shot img { height: 100%; object-fit: contain; }
.shot-top img { object-fit: cover; object-position: top; }
.shot-bottom img { object-fit: cover; object-position: bottom; }
.tour-panel figcaption { display: grid; grid-template-columns: 1fr auto; gap: 20px; }
.caption-meta { color: var(--muted); font: 8px/1.8 var(--mono); padding-top: 2px; letter-spacing: 0.055em; }
.section-footnote { margin-top: 23px; font-size: 11px; color: var(--muted); }
.library-section { padding-block: 67px; border-block: 1px solid var(--line); background: #151a16; }
.library-grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 80px; align-items: center; }
.library-copy h2 { font-size: clamp(2rem, 3vw, 2.8rem); }
.library-copy p:not(.eyebrow) { margin-top: 21px; font-size: 14px; max-width: 390px; }
.library-copy .text-link { margin-top: 17px; }
.library-shot { aspect-ratio: 1.9; }
.library-shot img { height: 100%; object-fit: cover; object-position: top; }
.models-grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 80px; align-items: center; }
.section-intro { max-width: 390px; margin-block: 25px 16px; font-size: 15px; }
.model-options { border-top: 1px solid var(--line); }
.model-option { padding-block: 29px; border-bottom: 1px solid var(--line); }
.option-heading { display: flex; align-items: center; gap: 13px; }
.option-symbol { color: var(--accent); font-size: 20px; }
.option-kind { margin-left: auto; color: var(--muted); font: 9px var(--mono); white-space: nowrap; }
.model-names { margin-block: 17px 12px; color: var(--ink); font-size: 21px; line-height: 1.7; letter-spacing: -0.025em; }
.model-names span { margin-inline: 7px; color: #697a68; }
.model-option > p:last-child { max-width: 520px; font-size: 13px; }
.review-section { padding-top: 80px; border-block: 1px solid var(--line); background: #151817; }
.review-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 85px; align-items: center; }
.review-grid h2 { font-size: clamp(2rem, 3.1vw, 2.9rem); }
.review-grid p:not(.eyebrow) { margin-top: 25px; font-size: 14px; }
.review-points { margin: 24px 0 13px; padding-left: 19px; color: var(--soft); font-size: 13px; }
.review-points li { margin-block: 10px; padding-left: 5px; }
.review-points li::marker { color: var(--accent); }
.companion-note { display: flex; align-items: center; gap: 23px; margin-top: 65px; padding-block: 30px; border-top: 1px solid var(--line); }
.companion-symbol { font-size: 29px; color: var(--lilac); }
.companion-note h3 { margin-bottom: 6px; font-size: 14px; }
.companion-note p { font-size: 12px; }
.companion-note > .text-link { margin-left: auto; flex-shrink: 0; }
.start-panel { padding: 45px; border-radius: 9px; color: #1a2815; background: var(--accent); }
.start-panel p { color: #405234; }
.start-panel .eyebrow { color: #3e552f; margin-bottom: 18px; }
.start-heading { display: flex; align-items: center; justify-content: space-between; gap: 35px; }
.start-heading h2 { font-size: clamp(2.6rem, 4vw, 3.6rem); }
.start-heading p:not(.eyebrow) { margin-top: 14px; font-size: 14px; }
.start-heading .button { flex-shrink: 0; }
.start-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 38px; list-style: none; margin: 38px 0 0; padding: 30px 0; border-block: 1px solid #95b775; }
.start-steps li { display: flex; align-items: baseline; gap: 13px; }
.start-steps li > span { font: 11px var(--mono); color: #496735; }
.start-steps h3 { font-size: 14px; }
.start-steps p { margin-top: 9px; font-size: 12px; }
.start-links { display: flex; flex-wrap: wrap; gap: 12px 32px; margin-top: 23px; font-size: 12px; }
.start-links a { padding-block: 6px; text-decoration: underline; text-underline-offset: 4px; }
.start-panel a:focus-visible { outline-color: #1b3010; }
.site-footer { padding-bottom: 28px; }
.footer-top { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 44px; }
.footer-about p { margin-top: 15px; font-size: 12px; }
.footer-group { display: grid; justify-items: start; align-content: start; gap: 10px; }
.footer-group p { margin-bottom: 8px; font: 10px/1.7 var(--mono); color: var(--muted); }
.footer-group a { font-size: 12px; color: var(--soft); padding-block: 3px; }
.footer-bottom { display: flex; flex-wrap: wrap; gap: 10px 24px; padding-top: 21px; border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; }
.footer-bottom > span:last-child { margin-left: auto; }
@media (min-width: 1600px) {
  .hero { padding-block: 110px 100px; }
}
@media (max-width: 1050px) {
  .hero { grid-template-columns: 1fr; gap: 45px; padding-top: 64px; }
  .hero-copy { max-width: 620px; }
  .hero h1 { font-size: clamp(3.8rem, 7.5vw, 5.1rem); }
  .hero-intro { max-width: 540px; }
  .hero-figure { max-width: 850px; width: 100%; }
  .section-heading, .models-grid, .library-grid, .review-grid { gap: 38px; }
  .tour { grid-template-columns: 0.85fr 1.5fr; gap: 20px; }
  .tour-tab { padding-inline: 10px; }
  .tour-panel figcaption { grid-template-columns: 1fr; gap: 6px; }
  .fundamentals > div { gap: 10px; padding-inline: 16px; }
  .start-panel { padding: 35px; }
}
@media (max-width: 760px) {
  .wrap { width: calc(100% - 40px); }
  .section { padding-block: 70px; }
  .header-inner { gap: 18px; }
  .main-nav { gap: 19px; }
  .hero { padding-block: 55px; }
  .hero h1 { font-size: clamp(3.25rem, 9vw, 4.9rem); }
  .fundamentals { grid-template-columns: 1fr; }
  .fundamentals > div { padding: 19px 0; gap: 17px; }
  .fundamentals > div + div { border-left: 0; border-top: 1px solid var(--line); }
  .fundamentals p > span { display: inline; margin-left: 10px; }
  .fundamentals strong { display: inline; }
  .section-heading, .models-grid, .library-grid, .review-grid { grid-template-columns: 1fr; gap: 28px; }
  .section-heading { margin-bottom: 27px; }
  .section-heading > p, .section-intro, .library-copy p:not(.eyebrow) { max-width: 570px; }
  .tour { grid-template-columns: 1fr; gap: 20px; }
  .tour-tabs { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .tour-tab { grid-template-columns: 1fr; gap: 7px; padding: 15px 12px; min-height: 0; }
  .tour-tab strong { font-size: 16px; margin: 0; }
  .tour-tab > span > span { margin-top: 9px; font-size: 11px; }
  .tab-arrow { display: none; }
  .tour-panel figcaption { grid-template-columns: 1fr auto; }
  .prompt-bar { padding: 15px; gap: 12px; flex-wrap: wrap; }
  .prompt-bar p { flex-basis: 80%; }
  .copy-button { margin-left: 31px; }
  .library-section { padding-block: 50px; }
  .models-grid { gap: 32px; }
  .review-section { padding-top: 60px; }
  .review-figure { order: 1; }
  .review-grid > div { order: 0; }
  .companion-note { flex-wrap: wrap; gap: 14px; margin-top: 40px; }
  .companion-note > div { flex: 1; }
  .companion-note > .text-link { margin-left: 40px; }
  .start-heading { flex-direction: column; align-items: flex-start; gap: 24px; }
  .start-steps { grid-template-columns: 1fr; gap: 24px; margin-top: 30px; }
  .start-steps p { margin-top: 6px; }
  .footer-top { grid-template-columns: repeat(3, 1fr); gap: 28px; }
  .footer-about { grid-column: 1 / -1; }
  .footer-bottom > span:last-child { margin-left: 0; flex-basis: 100%; }
}
@media (max-width: 480px) {
  html { scroll-padding-top: 125px; }
  .wrap { width: calc(100% - 36px); }
  .header-inner { grid-template-columns: 1fr auto; padding-block: 9px 3px; gap: 0 15px; }
  .main-nav { grid-row: 2; grid-column: 1 / -1; justify-content: space-between; gap: 16px; }
  .source-link { grid-column: 2; grid-row: 1; }
  .brand > span { font-size: 26px; }
  .hero { padding-top: 40px; gap: 30px; }
  .hero .eyebrow { font-size: 9px; }
  .hero h1 { font-size: clamp(2.5rem, 11vw, 3.9rem); }
  .hero-intro { font-size: 15px; margin-top: 22px; }
  .actions { gap: 12px 23px; }
  .button { gap: 18px; }
  .image-label-end { display: none; }
  .fundamentals strong, .fundamentals p > span { display: block; }
  .fundamentals p > span { margin-left: 0; }
  .tour-tabs { gap: 5px; }
  .tour-tab { padding: 12px 9px; }
  .tour-tab strong { font-size: 14px; line-height: 1.4; }
  .tour-tab > span > span { display: none; }
  .tour-panel figcaption { grid-template-columns: 1fr; }
  .tour-shot { aspect-ratio: 4 / 3; }
  .option-kind { display: none; }
  .model-names { font-size: 19px; }
  .option-heading { gap: 10px; }
  .option-heading h3 { font-size: 15px; }
  .start-panel { padding: 28px 23px; }
  .start-panel .eyebrow { font-size: 9px; }
  .start-heading h2 { font-size: 2.5rem; }
  .start-heading .button { width: 100%; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-group:last-child { grid-column: 1 / -1; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}