:root {
  --black: #0e0e0e;
  --ink: #111111;
  --char: #1a1a1a;
  --line-dk: #2a2a2a;
  --red: #d71920;
  --red-dk: #b3121b;
  --paper: #f4f3f0;
  --white: #ffffff;
  --muted: #5a5a5a;
  --muted-dk: #a3a3a3;
  --wrap: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 17px/1.6 "Saira", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
img, video { display: block; max-width: 100%; }
a { color: inherit; }
.mono { font-family: "IBM Plex Mono", ui-monospace, monospace; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 28px; }

h1, h2, h3 { margin: 0; line-height: 1.05; letter-spacing: -0.01em; }
h1 { font-size: clamp(42px, 5.6vw, 78px); font-weight: 700; }
h2 { font-size: clamp(32px, 3.8vw, 52px); font-weight: 700; }
h3 { font-size: 22px; font-weight: 600; line-height: 1.2; }

/* logo */
.m-sun { fill: var(--red); }
.m-ink { fill: currentColor; }
.brand { display: inline-flex; align-items: flex-end; gap: 10px; text-decoration: none; color: inherit; }
.brand-mark { width: 38px; height: 34px; }
.brand-word { font-size: 28px; font-weight: 700; line-height: 0.9; letter-spacing: -0.01em; display: inline-flex; align-items: flex-end; }
.brand-word .i { position: relative; display: inline-block; }
.brand-word .i b { position: absolute; left: 50%; top: -3px; width: 8px; height: 4px; margin-left: -4px; border-radius: 4px 4px 0 0; background: var(--red); }

/* buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: 0 24px;
  background: var(--red); color: var(--white);
  font: 600 16px/1 "Saira", sans-serif; letter-spacing: 0.02em;
  text-decoration: none; border: 2px solid var(--red);
  transition: background .15s, border-color .15s, transform .15s;
}
.btn:hover { background: var(--red-dk); border-color: var(--red-dk); transform: translateY(-1px); }
.btn-ghost { background: transparent; color: inherit; border-color: currentColor; }
.btn-ghost:hover { background: rgba(255,255,255,.08); border-color: currentColor; }
.btn-sm { min-height: 40px; padding: 0 16px; font-size: 14px; }
.btn-lg { min-height: 60px; padding: 0 34px; font-size: 20px; }

/* nav */
.nav {
  position: sticky; top: 0; z-index: 20;
  background: rgba(14,14,14,.92); color: var(--white);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--line-dk);
}
.nav-in { display: flex; align-items: center; justify-content: space-between; gap: 20px; height: 68px; }
.links { display: flex; gap: 28px; }
.links a { text-decoration: none; font-size: 15px; color: var(--muted-dk); }
.links a:hover { color: var(--white); }
.nav-act { display: flex; align-items: center; gap: 12px; }
.lang {
  min-width: 44px; min-height: 40px;
  background: transparent; color: var(--white);
  border: 1px solid var(--line-dk);
  font: 500 13px "IBM Plex Mono", monospace; cursor: pointer;
}
.lang:hover { border-color: var(--white); }

/* hero */
.hero { background: var(--black); color: var(--white); padding: 72px 0 0; position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 48px 48px; pointer-events: none;
}
.hero-in { position: relative; display: grid; grid-template-columns: 1fr 1.08fr; gap: 56px; align-items: center; }
.kicker { display: inline-flex; align-items: center; gap: 10px; font-size: 13px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted-dk); margin: 0 0 22px; }
.kicker .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--red); box-shadow: 0 0 0 4px rgba(215,25,32,.25); }
.lede { font-size: 19px; color: #cfcfcf; margin: 24px 0 34px; max-width: 34em; }
.cta { display: flex; flex-wrap: wrap; gap: 14px; }

.hero-media { margin: 0; }
.screen { background: var(--char); border: 1px solid var(--line-dk); box-shadow: 0 30px 80px rgba(0,0,0,.5); }
.screen-bar { display: flex; align-items: center; gap: 7px; padding: 10px 14px; border-bottom: 1px solid var(--line-dk); font-size: 11.5px; color: var(--muted-dk); }
.screen-bar span { width: 9px; height: 9px; border-radius: 50%; background: #3a3a3a; }
.screen-bar span:first-child { background: var(--red); }
.screen-bar em { font-style: normal; margin-left: 10px; letter-spacing: .04em; }
.screen video { width: 100%; aspect-ratio: 1600 / 520; object-fit: cover; background: #222; }
.hero-media figcaption { font-size: 12px; color: var(--muted-dk); margin-top: 12px; }

.stats { position: relative; list-style: none; margin: 64px 0 0; padding: 0; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); border-top: 1px solid var(--line-dk); }
.stats li { padding: 26px 18px 30px; border-left: 1px solid var(--line-dk); display: flex; flex-direction: column; gap: 4px; }
.stats li:first-child { border-left: 0; padding-left: 0; }
.stats b { font-size: 46px; font-weight: 700; line-height: 1; color: var(--white); }
.stats li:first-child b { color: var(--red); }
.stats span { font-size: 14px; color: var(--muted-dk); line-height: 1.35; }

/* sections */
.sec { padding: 104px 0; }
.sec.light { background: var(--paper); color: var(--ink); }
.sec.dark { background: var(--black); color: var(--white); }
.label { font-size: 12.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--red); margin: 0 0 16px; }
.head { max-width: 760px; margin-bottom: 52px; }
.sub { font-size: 19px; color: var(--muted); margin: 18px 0 0; }
.dark .sub { color: var(--muted-dk); }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.prose p { margin: 0 0 18px; font-size: 18px; color: #333; }
.prose-dk { font-size: 18px; color: #cfcfcf; margin: 22px 0 0; }

/* product features */
.feat { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: var(--line-dk); border: 1px solid var(--line-dk); }
.feat-card { background: var(--black); padding: 30px 26px 34px; }
.feat-card .num { color: var(--red); font-size: 13px; }
.feat-card h3 { margin: 14px 0 12px; }
.feat-card p { margin: 0; color: var(--muted-dk); font-size: 15.5px; }
.shots { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; margin-top: 40px; }
.shot { margin: 0; }
.shot img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; object-position: top; border: 1px solid var(--line-dk); }
.shot figcaption { font-size: 12.5px; color: var(--muted-dk); margin-top: 10px; }

/* simulators */
.sim-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.sim { background: var(--white); border: 1px solid #dedbd4; display: flex; flex-direction: column; transition: transform .2s, box-shadow .2s; }
.sim:hover { transform: translateY(-3px); box-shadow: 0 18px 40px rgba(0,0,0,.08); }
.sim-media { background: var(--ink); aspect-ratio: 16 / 7; overflow: hidden; }
.sim-media video, .sim-media img { width: 100%; height: 100%; object-fit: cover; object-position: top; }
.sim-txt { padding: 22px 24px 26px; }
.tag { display: inline-block; font-size: 11.5px; letter-spacing: .1em; color: var(--red); border: 1px solid currentColor; padding: 2px 8px; margin-bottom: 12px; }
.sim-txt h3 { margin-bottom: 8px; }
.sim-txt p { margin: 0; color: var(--muted); font-size: 15.5px; }
.more { margin: 36px 0 0; font-size: 14px; color: var(--muted); }

/* flow */
.flow { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 0; counter-reset: s; }
.flow li { position: relative; padding: 28px 22px 0 0; border-top: 2px solid var(--line-dk); }
.flow li::before { content: ""; position: absolute; top: -2px; left: 0; width: 48px; height: 2px; background: var(--red); }
.flow li span { font-size: 13px; color: var(--red); }
.flow h3 { margin: 10px 0 10px; }
.flow p { margin: 0; color: var(--muted-dk); font-size: 15.5px; }

/* curriculum */
.cur { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; }
.cur-col { border-top: 3px solid var(--ink); padding-top: 18px; }
.cur-col h3 { margin-bottom: 10px; }
.cur-col p { margin: 0; color: var(--muted); font-size: 15.5px; }
.tracks { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; margin-top: 56px; }
.track { background: var(--ink); color: var(--white); padding: 30px 28px 34px; }
.track .label { margin-bottom: 12px; }
.track h3 { font-size: 26px; margin-bottom: 12px; }
.track p { margin: 0; color: var(--muted-dk); font-size: 15.5px; }
.track-next { background: transparent; color: var(--ink); border: 2px dashed #bdb8ad; }
.track-next p { color: var(--muted); }

/* countries */
.countries { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line-dk); }
.countries li { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; padding: 20px 0; border-bottom: 1px solid var(--line-dk); flex-wrap: wrap; }
.countries b { font-size: 22px; font-weight: 600; }
.countries span { color: var(--muted-dk); font-size: 14px; }
.countries .lang-row b { color: var(--red); }

/* audiences */
.aud { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.aud article { border-top: 3px solid var(--red); padding-top: 20px; }
.aud h3 { margin-bottom: 10px; }
.aud p { margin: 0; color: var(--muted); }
.teams { margin-top: 64px; background: var(--ink); color: var(--white); padding: 44px 48px; display: flex; align-items: center; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.teams > div { max-width: 640px; }
.teams h3 { font-size: 30px; margin-bottom: 12px; }
.teams p { margin: 0; color: var(--muted-dk); }

/* founder */
.founder { display: grid; grid-template-columns: 200px 1fr; gap: 56px; align-items: center; }
.founder-mark { width: 200px; height: 176px; color: var(--white); }
blockquote { margin: 0; }
blockquote p { font-size: clamp(20px, 2.1vw, 26px); line-height: 1.5; margin: 0; color: #e8e8e8; }
.sig { margin: 26px 0 0; font-size: 22px; font-weight: 600; display: flex; align-items: baseline; gap: 14px; }
.sig .mono { font-size: 13px; font-weight: 400; color: var(--muted-dk); letter-spacing: .06em; }

/* faq */
.faq-wrap { display: grid; grid-template-columns: 1fr 2fr; gap: 56px; }
.faq details { border-top: 1px solid #d3cfc6; padding: 22px 0; }
.faq details:last-child { border-bottom: 1px solid #d3cfc6; }
.faq summary { cursor: pointer; font-size: 20px; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 20px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--red); font-size: 26px; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq p { margin: 12px 0 0; color: var(--muted); max-width: 46em; }

/* cta */
.cta-sec { background: var(--red); color: var(--white); text-align: center; }
.cta-in { display: flex; flex-direction: column; align-items: center; gap: 20px; }
.cta-mark { width: 96px; height: 84px; color: var(--white); }
.cta-sec .m-sun { fill: var(--white); }
.cta-sec .m-ink { fill: var(--black); }
.cta-sec p { margin: 0; font-size: 19px; color: rgba(255,255,255,.9); }
.cta-sec .btn { background: var(--black); border-color: var(--black); margin-top: 8px; }
.cta-sec .btn:hover { background: #262626; border-color: #262626; }

/* footer */
.foot { background: var(--black); color: var(--white); padding: 40px 0; }
.foot-in { display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; }
.foot p { margin: 0; font-size: 12.5px; color: var(--muted-dk); max-width: 640px; }

/* motion */
@media (prefers-reduced-motion: no-preference) {
  .reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
  .reveal.in { opacity: 1; transform: none; }
}

/* tablet */
@media (max-width: 1000px) {
  .links { display: none; }
  .hero-in, .two, .faq-wrap { grid-template-columns: 1fr; gap: 40px; }
  .feat { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cur { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .flow { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 32px; }
  .stats { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .stats li:nth-child(4) { border-left: 0; padding-left: 0; }
}

/* phone */
@media (max-width: 640px) {
  .wrap { padding: 0 16px; }
  .nav-in { height: 60px; }
  .nav-act .btn-sm { display: none; }
  .brand-word { font-size: 24px; }
  .hero { padding-top: 44px; }
  .sec { padding: 72px 0; }
  .feat, .cur, .sim-grid, .tracks, .aud, .shots, .flow { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stats li { border-left: 0; padding-left: 0; border-top: 1px solid var(--line-dk); }
  .stats li:nth-child(odd) { padding-right: 12px; }
  .stats b { font-size: 38px; }
  .teams { padding: 30px 22px; }
  .founder { grid-template-columns: 1fr; gap: 28px; }
  .founder-mark { width: 120px; height: 106px; }
  .sim-media { aspect-ratio: 16 / 8; }
}

.growing { position: relative; margin: 0; padding: 0 0 34px; font-size: 13px; color: var(--muted-dk); }
.growing::before { content: ""; display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--red); margin-right: 10px; vertical-align: 1px; }