:root {
  --ink: #0a0c11;
  --ink-soft: #171a21;
  --paper: #f4f3ef;
  --paper-pure: #ffffff;
  --muted: #656a73;
  --line: rgba(10, 12, 17, 0.14);
  --line-dark: rgba(255, 255, 255, 0.16);
  --accent: #19bde8;
  --accent-bright: #57dcff;
  --accent-dark: #007b9f;
  --success: #9ff2c4;
  --max: 1180px;
  --radius: 18px;
  --nav-height: 64px;
  color-scheme: light dark;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-size: 17px;
  line-height: 1.55;
  letter-spacing: -0.015em;
}
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }
.skip-link {
  position: fixed;
  left: 16px;
  top: -100px;
  z-index: 100;
  padding: 12px 18px;
  border-radius: 999px;
  background: var(--paper-pure);
  color: var(--ink);
}
.skip-link:focus { top: 16px; }

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  height: var(--nav-height);
  background: rgba(8, 10, 15, 0.82);
  color: #fff;
  backdrop-filter: saturate(155%) blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.nav-shell {
  width: min(calc(100% - 40px), var(--max));
  height: 100%;
  margin: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-weight: 760;
  font-size: 19px;
  text-decoration: none;
  letter-spacing: -0.045em;
}
.wordmark-mark {
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border-radius: 7px;
  color: var(--ink);
  background: var(--paper-pure);
  font-size: 14px;
  letter-spacing: -0.09em;
}
.wordmark-dot { color: var(--accent-bright); }
.site-nav { display: flex; align-items: center; gap: 29px; margin-left: auto; }
.site-nav a {
  color: rgba(255,255,255,.75);
  font-size: 14px;
  text-decoration: none;
  transition: color .2s ease;
}
.site-nav a:hover { color: #fff; }
.nav-cta {
  min-height: 40px;
  padding: 9px 16px;
  border: 1px solid rgba(255,255,255,.24);
  border-radius: 999px;
  color: #fff !important;
}
.nav-cta:hover { background: #fff; color: var(--ink) !important; }
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 0;
  background: transparent;
  color: #fff;
}
.nav-toggle span,
.nav-toggle::before,
.nav-toggle::after {
  content: "";
  display: block;
  width: 22px;
  height: 1.5px;
  margin: 5px auto;
  background: currentColor;
}

.hero {
  min-height: 100svh;
  padding: calc(var(--nav-height) + 100px) 20px 72px;
  display: grid;
  align-items: center;
  overflow: hidden;
  color: #fff;
  background: #080a0f;
}
.hero-inner { width: min(100%, var(--max)); margin: auto; }
.eyebrow {
  margin: 0 0 24px;
  color: var(--accent-bright);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .15em;
  text-transform: uppercase;
}
.hero h1 {
  max-width: 1050px;
  margin: 0;
  font-size: clamp(3.7rem, 9vw, 8rem);
  line-height: .89;
  letter-spacing: -.075em;
  font-weight: 680;
  text-wrap: balance;
}
.hero h1 .accent { color: var(--accent-bright); }
.hero-bottom {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 40px;
  align-items: end;
  margin-top: clamp(48px, 8vw, 92px);
  padding-top: 28px;
  border-top: 1px solid var(--line-dark);
}
.hero-copy { max-width: 720px; margin: 0; color: rgba(255,255,255,.78); font-size: clamp(1.15rem, 2vw, 1.55rem); line-height: 1.38; letter-spacing: -.025em; }
.hero-actions { display: flex; gap: 10px; }
.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 11px 20px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: var(--accent);
  color: #041319;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: transform .2s ease, background .2s ease, color .2s ease;
}
.button:hover { transform: translateY(-2px); background: var(--accent-bright); }
.button.secondary { background: transparent; color: #fff; border-color: rgba(255,255,255,.3); }
.button.secondary:hover { background: #fff; color: var(--ink); }
.button.dark { background: var(--ink); color: #fff; }
.button.dark:hover { background: var(--ink-soft); }

.section { padding: clamp(84px, 12vw, 160px) 20px; }
.section-inner { width: min(100%, var(--max)); margin: auto; }
.section-heading {
  display: grid;
  grid-template-columns: .7fr 1.3fr;
  gap: 60px;
  align-items: start;
  margin-bottom: clamp(54px, 8vw, 90px);
}
.section-kicker { margin: 5px 0 0; color: var(--muted); font-size: 13px; font-weight: 760; letter-spacing: .13em; text-transform: uppercase; }
.section-heading h2 { margin: 0; max-width: 800px; font-size: clamp(2.7rem, 6vw, 5.7rem); line-height: .98; letter-spacing: -.065em; font-weight: 650; text-wrap: balance; }
.section-heading p { grid-column: 2; max-width: 700px; margin: -30px 0 0; color: var(--muted); font-size: 19px; }

.thesis-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 16px; }
.thesis-card { min-height: 430px; padding: clamp(28px, 5vw, 54px); border-radius: var(--radius); background: var(--paper-pure); display: flex; flex-direction: column; justify-content: space-between; }
.thesis-card.dark { background: var(--ink); color: #fff; }
.thesis-number { color: var(--accent-dark); font-size: 13px; font-weight: 750; letter-spacing: .12em; }
.thesis-card.dark .thesis-number { color: var(--accent-bright); }
.thesis-card h3 { margin: auto 0 18px; max-width: 500px; font-size: clamp(2rem, 4vw, 3.8rem); line-height: 1; letter-spacing: -.05em; }
.thesis-card p { max-width: 520px; margin: 0; color: var(--muted); }
.thesis-card.dark p { color: rgba(255,255,255,.67); }

.products { color: #fff; background: var(--ink); }
.products .section-kicker, .products .section-heading p { color: rgba(255,255,255,.58); }
.product-tabs { display: flex; gap: 10px; overflow-x: auto; padding: 0 0 18px; scrollbar-width: thin; }
.product-tab {
  flex: 0 0 auto;
  min-height: 46px;
  padding: 10px 17px;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 999px;
  color: rgba(255,255,255,.65);
  background: transparent;
  cursor: pointer;
}
.product-tab.is-active { color: var(--ink); background: #fff; border-color: #fff; }
.product-stage { margin-top: 24px; }
.product-panel {
  min-height: 610px;
  display: grid;
  grid-template-columns: .75fr 1.25fr;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.13);
  border-radius: var(--radius);
  background: #11141b;
}
.product-copy { padding: clamp(34px, 6vw, 68px); display: flex; flex-direction: column; justify-content: center; }
.product-meta { color: var(--accent-bright); font-size: 12px; font-weight: 750; letter-spacing: .12em; text-transform: uppercase; }
.product-copy h3 { margin: 18px 0; font-size: clamp(2.7rem, 5vw, 5.4rem); line-height: .95; letter-spacing: -.065em; }
.product-copy > p { max-width: 510px; margin: 0; color: rgba(255,255,255,.66); font-size: 18px; }
.product-points { display: grid; gap: 11px; margin: 34px 0 0; padding: 0; list-style: none; color: rgba(255,255,255,.84); font-size: 15px; }
.product-points li::before { content: ""; display: inline-block; width: 7px; height: 7px; margin: 0 12px 2px 0; border-radius: 50%; background: var(--accent-bright); }
.product-visual { position: relative; min-height: 520px; padding: clamp(28px, 5vw, 58px); display: grid; place-items: center; background: #0b0d12; border-left: 1px solid rgba(255,255,255,.12); overflow: hidden; }
.interface {
  width: min(100%, 650px);
  min-height: 410px;
  padding: 18px;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 14px;
  background: #171a22;
  box-shadow: 0 28px 80px rgba(0,0,0,.38);
  transform: perspective(1100px) rotateY(-5deg) rotateX(2deg);
}
.interface-bar { height: 32px; display: flex; align-items: center; gap: 6px; border-bottom: 1px solid rgba(255,255,255,.1); }
.interface-bar span { width: 7px; height: 7px; border-radius: 50%; background: rgba(255,255,255,.25); }
.interface-name { margin-left: auto; color: rgba(255,255,255,.42); font-size: 11px; }
.interface-body { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; padding-top: 16px; }
.interface-block { min-height: 96px; padding: 17px; border-radius: 8px; background: rgba(255,255,255,.055); }
.interface-block.wide { grid-column: 1 / -1; min-height: 135px; }
.interface-label { color: rgba(255,255,255,.45); font-size: 11px; text-transform: uppercase; letter-spacing: .09em; }
.interface-title { margin-top: 9px; color: #fff; font-size: 18px; font-weight: 660; }
.interface-line { height: 5px; margin-top: 12px; border-radius: 99px; background: rgba(255,255,255,.12); }
.interface-line.short { width: 58%; }
.interface-signal { display: flex; gap: 5px; height: 66px; align-items: end; margin-top: 15px; }
.interface-signal span { flex: 1; min-width: 4px; border-radius: 4px 4px 1px 1px; background: var(--accent); opacity: .5; }
.interface-signal span:nth-child(2n) { opacity: .85; }
.interface-signal span:nth-child(3n) { opacity: .32; }

.demos { background: var(--paper-pure); }
.demo-feature { display: grid; grid-template-columns: 1.3fr .7fr; min-height: 500px; border-radius: var(--radius); overflow: hidden; color: #fff; background: var(--ink); }
.demo-screen { position: relative; min-height: 420px; display: grid; place-items: center; overflow: hidden; background: #05070b; border-right: 1px solid var(--line-dark); }
.demo-video { width: 100%; height: 100%; min-height: 420px; display: block; object-fit: contain; background: #05070b; }
.play-button { width: 86px; height: 86px; border: 1px solid rgba(255,255,255,.35); border-radius: 50%; color: #fff; background: rgba(255,255,255,.06); font-size: 24px; cursor: pointer; transition: background .2s ease, transform .2s ease; }
.play-button:hover { transform: scale(1.04); background: var(--accent); color: var(--ink); }
.demo-screen-label { position: absolute; inset: 24px 24px auto auto; padding: 7px 10px; border: 1px solid rgba(255,255,255,.14); border-radius: 999px; color: rgba(255,255,255,.72); background: rgba(7,9,14,.68); backdrop-filter: blur(10px); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; pointer-events: none; }
.demo-copy { padding: clamp(36px, 6vw, 70px); display: flex; flex-direction: column; justify-content: center; }
.demo-copy h3 { margin: 0 0 18px; font-size: clamp(2.2rem, 4vw, 4rem); line-height: 1; letter-spacing: -.055em; }
.demo-copy p { margin: 0; color: rgba(255,255,255,.62); }
.demo-status { align-self: flex-start; margin-top: 30px; padding: 7px 10px; border: 1px solid rgba(255,255,255,.2); border-radius: 999px; color: var(--accent-bright); font-size: 12px; }
.demo-status.is-live { border-color: rgba(159,242,196,.32); color: var(--success); }
.demo-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 12px; }
.demo-card { min-height: 280px; padding: 28px; border: 0; border-radius: 14px; text-align: left; color: var(--ink); background: var(--paper); cursor: pointer; transition: transform .2s ease, background .2s ease; }
.demo-card:hover { transform: translateY(-3px); background: #ecebe6; }
.demo-card-tag { color: var(--accent-dark); font-size: 11px; font-weight: 740; letter-spacing: .1em; text-transform: uppercase; }
.demo-card h3 { margin: auto 0 10px; padding-top: 92px; font-size: 25px; line-height: 1.05; letter-spacing: -.04em; }
.demo-card p { margin: 0; color: var(--muted); font-size: 14px; }

.principles { background: var(--paper); }
.principle-list { border-top: 1px solid var(--line); }
.principle { display: grid; grid-template-columns: 70px 1fr 1fr; gap: 34px; align-items: start; padding: 34px 0; border-bottom: 1px solid var(--line); }
.principle-index { color: var(--accent-dark); font-size: 13px; font-weight: 750; }
.principle h3 { margin: 0; font-size: clamp(1.7rem, 3vw, 3rem); line-height: 1.05; letter-spacing: -.045em; }
.principle p { margin: 0; color: var(--muted); }

.contact { padding: clamp(90px, 15vw, 180px) 20px; text-align: center; color: #fff; background: var(--ink); }
.contact-inner { width: min(100%, 940px); margin: auto; }
.contact .eyebrow { margin-bottom: 22px; }
.contact h2 { margin: 0; font-size: clamp(3rem, 8vw, 7rem); line-height: .92; letter-spacing: -.075em; text-wrap: balance; }
.contact p { max-width: 650px; margin: 32px auto; color: rgba(255,255,255,.65); font-size: 19px; }
.contact-note { margin-top: 20px !important; font-size: 13px !important; }

.site-footer { padding: 34px 20px; color: rgba(255,255,255,.55); background: #050609; border-top: 1px solid rgba(255,255,255,.1); }
.footer-inner { width: min(100%, var(--max)); margin: auto; display: flex; justify-content: space-between; gap: 30px; font-size: 12px; }
.footer-inner p { margin: 0; }

.demo-dialog { width: min(calc(100% - 32px), 760px); padding: 0; border: 1px solid rgba(255,255,255,.14); border-radius: var(--radius); color: #fff; background: #10131a; box-shadow: 0 40px 120px rgba(0,0,0,.55); }
.demo-dialog::backdrop { background: rgba(0,0,0,.72); backdrop-filter: blur(8px); }
.dialog-close { position: absolute; top: 16px; right: 16px; width: 44px; height: 44px; border: 1px solid rgba(255,255,255,.18); border-radius: 50%; color: #fff; background: transparent; cursor: pointer; }
.dialog-media { min-height: 360px; display: grid; place-items: center; background: #080a0f; border-bottom: 1px solid rgba(255,255,255,.12); }
.dialog-media-mark { width: 74px; height: 74px; display: grid; place-items: center; border-radius: 18px; color: var(--ink); background: var(--accent-bright); font-weight: 800; letter-spacing: -.08em; }
.dialog-content { padding: 30px; }
.dialog-content h2 { margin: 0 0 10px; font-size: 32px; letter-spacing: -.045em; }
.dialog-content p { margin: 0; color: rgba(255,255,255,.62); }
.dialog-status { margin-top: 22px !important; color: var(--accent-bright) !important; font-size: 13px; }

[data-reveal] { opacity: 1; transform: none; }

@media (max-width: 900px) {
  .site-nav { position: absolute; top: var(--nav-height); left: 0; right: 0; display: none; padding: 18px 20px 24px; flex-direction: column; align-items: stretch; gap: 0; background: rgba(8,10,15,.98); border-bottom: 1px solid rgba(255,255,255,.12); }
  .site-nav.is-open { display: flex; }
  .site-nav a { min-height: 48px; display: flex; align-items: center; font-size: 17px; border-bottom: 1px solid rgba(255,255,255,.1); }
  .site-nav .nav-cta { margin-top: 14px; justify-content: center; border: 1px solid rgba(255,255,255,.28); }
  .nav-toggle { display: block; }
  .hero-bottom, .section-heading, .thesis-grid, .product-panel, .demo-feature { grid-template-columns: 1fr; }
  .demo-feature { min-height: 0; }
  .hero-actions { justify-content: flex-start; }
  .section-heading { gap: 24px; }
  .section-heading p { grid-column: 1; margin: 0; }
  .product-visual { border-left: 0; border-top: 1px solid rgba(255,255,255,.12); }
  .demo-screen { min-height: 0; border-right: 0; border-bottom: 1px solid var(--line-dark); }
  .demo-video { height: auto; min-height: 0; aspect-ratio: 16 / 9; }
  .demo-grid { grid-template-columns: 1fr 1fr; }
  .principle { grid-template-columns: 44px 1fr; }
  .principle p { grid-column: 2; }
}

@media (max-width: 620px) {
  body { font-size: 16px; }
  .hero { min-height: 880px; padding-top: 132px; align-items: start; }
  .hero h1 { font-size: clamp(3rem, 15vw, 4.6rem); }
  .hero-bottom { margin-top: 54px; gap: 30px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .section { padding: 82px 18px; }
  .section-heading { margin-bottom: 46px; }
  .section-heading h2 { font-size: 2.85rem; }
  .thesis-card { min-height: 360px; }
  .product-panel { min-height: 0; }
  .product-copy { padding: 34px 26px; }
  .product-copy h3 { font-size: 3rem; }
  .product-visual { min-height: 400px; padding: 26px 18px; }
  .interface { min-height: 340px; transform: none; }
  .interface-body { grid-template-columns: 1fr; }
  .interface-block:nth-child(2) { display: none; }
  .demo-grid { grid-template-columns: 1fr; }
  .demo-card { min-height: 220px; }
  .demo-card h3 { padding-top: 54px; }
  .principle { grid-template-columns: 1fr; gap: 12px; }
  .principle p { grid-column: 1; }
  .footer-inner { flex-direction: column; }
  .dialog-media { min-height: 250px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
  [data-reveal] { opacity: 1; transform: none; }
}