:root {
  --os-void: #030609;
  --os-ink: #08090f;
  --os-panel: rgba(8, 10, 14, .78);
  --os-panel-2: rgba(15, 17, 24, .88);
  --os-coral: #ff6b35;
  --os-rose: #ff2d78;
  --os-gold: #c9a227;
  --os-cyan: #00f0ff;
  --os-ice: #eaf1fc;
  --os-steel: #7a94b4;
  --os-line: rgba(234, 241, 252, .14);
  --os-shadow: rgba(0, 0, 0, .62);
  --font-display: "Archivo", system-ui, sans-serif;
  --font-body: "Hanken Grotesk", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", monospace;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 18% 0, rgba(255, 107, 53, .16), transparent 28rem),
    radial-gradient(circle at 88% 12%, rgba(0, 240, 255, .12), transparent 30rem),
    linear-gradient(180deg, var(--os-void), #050608 42%, var(--os-void));
  color: var(--os-ice);
  font-family: var(--font-body);
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 20;
  pointer-events: none;
  opacity: .07;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 260 260' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.72' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='260' height='260' filter='url(%23noise)' opacity='.55'/%3E%3C/svg%3E");
  mix-blend-mode: screen;
}

a {
  color: inherit;
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: 1rem;
  z-index: 30;
  transform: translateY(-160%);
  background: var(--os-coral);
  color: var(--os-void);
  padding: .7rem 1rem;
  border-radius: .35rem;
  font-weight: 800;
  text-decoration: none;
}

.skip-link:focus {
  transform: translateY(0);
}

.cos-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .95rem clamp(1rem, 4vw, 2.4rem);
  background: linear-gradient(180deg, rgba(3, 6, 9, .82), rgba(3, 6, 9, .18));
  backdrop-filter: blur(18px);
}

.cos-brand img {
  display: block;
  width: auto;
  height: 2.1rem;
}

.cos-nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: .4rem;
}

.cos-nav-links a {
  padding: .48rem .72rem;
  border: 1px solid transparent;
  border-radius: .35rem;
  color: rgba(234, 241, 252, .72);
  font: 800 .66rem/1 var(--font-mono);
  letter-spacing: .08em;
  text-decoration: none;
  text-transform: uppercase;
  transition: color .25s cubic-bezier(.16, 1, .3, 1), border-color .25s cubic-bezier(.16, 1, .3, 1), background .25s cubic-bezier(.16, 1, .3, 1);
}

.cos-nav-links a:hover,
.cos-nav-links a:focus-visible {
  border-color: rgba(255, 107, 53, .44);
  background: rgba(255, 107, 53, .08);
  color: var(--os-ice);
}

.cos-hero {
  position: relative;
  min-height: 94svh;
  display: grid;
  align-items: end;
  overflow: hidden;
  padding: clamp(7rem, 16vh, 10rem) clamp(1.2rem, 5vw, 5rem) clamp(3.8rem, 8vw, 6rem);
  border-bottom: 1px solid var(--os-line);
}

.cos-hero-video,
.cos-hero-scrim {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.cos-hero-video {
  object-fit: cover;
  opacity: .86;
}

.cos-hero-scrim {
  background:
    linear-gradient(90deg, rgba(3, 6, 9, .95) 0, rgba(3, 6, 9, .78) 30%, rgba(3, 6, 9, .2) 68%),
    linear-gradient(180deg, rgba(3, 6, 9, .18), var(--os-void) 98%);
}

.cos-hero-inner {
  position: relative;
  width: 100%;
  min-width: 0;
  max-width: 49rem;
  z-index: 1;
}

.cos-kicker {
  margin: 0 0 .9rem;
  color: var(--os-cyan);
  font: 800 .72rem/1 var(--font-mono);
  letter-spacing: .18em;
  text-transform: uppercase;
}

.cos-hero h1,
.cos-section h2,
.cos-final h2 {
  margin: 0;
  font-family: var(--font-display);
  font-stretch: 125%;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.cos-hero h1 {
  max-width: 48rem;
  font-size: clamp(3.1rem, 7.2vw, 6.9rem);
  line-height: .9;
}

.cos-hero h1 span,
.cos-final h2 span {
  display: block;
}

.cos-hero-copy {
  max-width: 39rem;
  margin: 1.25rem 0 0;
  color: rgba(234, 241, 252, .82);
  font-size: clamp(1.02rem, 1.55vw, 1.28rem);
  line-height: 1.55;
}

.cos-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .75rem;
  margin-top: 1.7rem;
}

.cos-actions.centered {
  justify-content: center;
}

.cos-btn,
.cos-text-link {
  min-height: 2.85rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: .35rem;
  font-weight: 900;
  text-decoration: none;
  transition: transform .25s cubic-bezier(.16, 1, .3, 1), border-color .25s cubic-bezier(.16, 1, .3, 1), background .25s cubic-bezier(.16, 1, .3, 1), color .25s cubic-bezier(.16, 1, .3, 1);
}

.cos-btn {
  padding: 0 1.15rem;
  border: 1px solid var(--os-coral);
  font-size: .83rem;
  letter-spacing: .03em;
}

.cos-btn.primary {
  background: var(--os-coral);
  color: var(--os-void);
}

.cos-btn.ghost {
  background: rgba(3, 6, 9, .48);
  color: var(--os-coral);
}

.cos-btn.cyan {
  border-color: var(--os-cyan);
  color: var(--os-cyan);
}

.cos-text-link {
  color: rgba(234, 241, 252, .74);
  font-size: .9rem;
}

.cos-btn:hover,
.cos-text-link:hover,
.cos-btn:focus-visible,
.cos-text-link:focus-visible {
  transform: translateY(-2px);
}

.cos-scroll-cue {
  position: absolute;
  left: clamp(1.2rem, 5vw, 5rem);
  bottom: 1.2rem;
  z-index: 1;
  color: rgba(234, 241, 252, .58);
  font: 800 .64rem/1 var(--font-mono);
  letter-spacing: .14em;
  text-decoration: none;
  text-transform: uppercase;
}

.cos-section {
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(4.5rem, 10vw, 8rem) clamp(1.2rem, 5vw, 3rem);
}

.cos-section-head {
  max-width: 45rem;
  margin-bottom: 2rem;
}

.cos-section h2 {
  font-size: clamp(2.1rem, 5vw, 4.75rem);
  line-height: .92;
}

.cos-section-head p:last-child,
.cos-motion-copy p,
.cos-after p,
.cos-before p {
  color: rgba(234, 241, 252, .68);
  font-size: 1.02rem;
  line-height: 1.6;
}

.cos-panel-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.cos-tool-panel {
  position: relative;
  min-height: 24rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
  padding: 1.25rem;
  border: 1px solid var(--os-line);
  border-radius: .7rem;
  background:
    linear-gradient(180deg, transparent, rgba(3, 6, 9, .84)),
    var(--os-panel);
  box-shadow: 0 1.6rem 4rem var(--os-shadow);
}

.cos-tool-panel::before {
  content: "";
  position: absolute;
  inset: 1rem;
  border: 1px solid currentColor;
  border-radius: .55rem;
  opacity: .28;
  pointer-events: none;
}

.cos-tool-panel::after {
  content: "";
  position: absolute;
  inset: -20% 0 auto;
  height: 52%;
  background: radial-gradient(circle, currentColor, transparent 62%);
  opacity: .18;
  filter: blur(24px);
}

.cos-tool-panel.vibe {
  color: var(--os-rose);
}

.cos-tool-panel.engine {
  color: var(--os-gold);
}

.cos-tool-panel.vault {
  color: var(--os-cyan);
}

.cos-step,
.cos-panel-label {
  font-family: var(--font-mono);
  letter-spacing: .14em;
  text-transform: uppercase;
}

.cos-step {
  position: absolute;
  top: 1.35rem;
  left: 1.35rem;
  color: currentColor;
  font-weight: 800;
}

.cos-panel-label {
  margin: 0 0 .45rem;
  color: currentColor;
  font-size: .66rem;
  font-weight: 800;
}

.cos-tool-panel h3 {
  margin: 0;
  color: var(--os-ice);
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 3.1vw, 2.55rem);
  line-height: .95;
  text-transform: uppercase;
}

.cos-tool-panel p:last-of-type {
  margin: .8rem 0 1.1rem;
  color: rgba(234, 241, 252, .7);
  line-height: 1.55;
}

.cos-tool-panel a {
  width: max-content;
  max-width: 100%;
  color: currentColor;
  font-weight: 900;
  text-decoration: none;
}

.cos-motion {
  display: grid;
  grid-template-columns: minmax(16rem, .7fr) 1.3fr;
  gap: clamp(1.5rem, 5vw, 4rem);
  align-items: center;
}

.cos-timeline {
  counter-reset: loop;
  display: grid;
  gap: .85rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.cos-timeline li {
  counter-increment: loop;
  position: relative;
  display: flex;
  align-items: center;
  min-height: 4.2rem;
  padding: .9rem 1rem .9rem 4.4rem;
  border: 1px solid var(--os-line);
  border-radius: .55rem;
  background: linear-gradient(90deg, rgba(255, 107, 53, .08), rgba(0, 240, 255, .04)), var(--os-panel);
}

.cos-timeline li::before {
  content: counter(loop, decimal-leading-zero);
  position: absolute;
  left: 1rem;
  color: var(--os-gold);
  font: 900 .82rem/1 var(--font-mono);
}

.cos-timeline span {
  color: var(--os-ice);
  font-size: clamp(1.15rem, 2vw, 1.7rem);
  font-weight: 800;
}

.cos-memory {
  display: grid;
  grid-template-columns: .68fr 1.32fr;
  gap: 1rem;
  align-items: stretch;
}

.cos-before,
.cos-after {
  border: 1px solid var(--os-line);
  border-radius: .7rem;
  background: var(--os-panel-2);
  box-shadow: 0 1.3rem 3rem var(--os-shadow);
}

.cos-before {
  align-self: end;
  padding: 1.25rem;
  opacity: .72;
}

.cos-before h3 {
  margin: 0;
  color: rgba(234, 241, 252, .78);
  font-size: 1.15rem;
}

.cos-after {
  padding: clamp(1.35rem, 4vw, 2.2rem);
  background:
    linear-gradient(135deg, rgba(0, 240, 255, .1), transparent 42%),
    var(--os-panel-2);
}

.cos-after ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .75rem;
  margin: 1.35rem 0 0;
  padding: 0;
  list-style: none;
}

.cos-after li {
  padding: .8rem;
  border: 1px solid rgba(0, 240, 255, .18);
  border-radius: .45rem;
  color: rgba(234, 241, 252, .82);
  background: rgba(0, 240, 255, .045);
}

.cos-feeder-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: .85rem;
}

.cos-feeder-grid a {
  min-height: 11rem;
  padding: 1rem;
  border: 1px solid var(--os-line);
  border-radius: .6rem;
  background: rgba(8, 10, 14, .72);
  text-decoration: none;
  transition: transform .25s cubic-bezier(.16, 1, .3, 1), border-color .25s cubic-bezier(.16, 1, .3, 1);
}

.cos-feeder-grid a:hover,
.cos-feeder-grid a:focus-visible {
  transform: translateY(-3px);
  border-color: rgba(201, 162, 39, .58);
}

.cos-feeder-grid b {
  display: block;
  margin-bottom: .55rem;
  color: var(--os-gold);
  font-size: 1.05rem;
}

.cos-feeder-grid span {
  color: rgba(234, 241, 252, .66);
  line-height: 1.5;
}

.cos-final {
  max-width: 980px;
  margin: 0 auto;
  padding: clamp(4.5rem, 10vw, 8rem) clamp(1.2rem, 5vw, 3rem) clamp(5rem, 10vw, 8rem);
  text-align: center;
}

.cos-final h2 {
  font-size: clamp(2.45rem, 6vw, 5.4rem);
  line-height: .92;
}

.cos-footer {
  border-top: 1px solid var(--os-line);
  padding: 2.2rem clamp(1.2rem, 5vw, 4rem) 1.2rem;
  background:
    radial-gradient(circle at 20% 0, rgba(255, 107, 53, .08), transparent 32%),
    rgba(3, 6, 9, .96);
}

.cos-footer-inner,
.cos-footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.cos-footer-inner {
  padding-bottom: 1.4rem;
}

.cos-footer-brand {
  display: inline-flex;
  align-items: center;
  gap: .72rem;
  color: var(--os-ice);
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .16em;
  text-decoration: none;
  text-transform: uppercase;
}

.cos-footer-brand img {
  width: 2rem;
  height: 2rem;
  object-fit: contain;
  filter: drop-shadow(0 0 16px rgba(255, 107, 53, .2));
}

.cos-footer p,
.cos-footer-bottom {
  color: rgba(234, 241, 252, .52);
  font-size: .82rem;
}

.cos-footer p {
  max-width: 28rem;
  margin: .8rem 0 0;
}

.cos-footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: .9rem;
  justify-content: flex-end;
}

.cos-footer-links a {
  color: rgba(234, 241, 252, .62);
  font-family: var(--font-mono);
  font-size: .65rem;
  letter-spacing: .12em;
  text-decoration: none;
  text-transform: uppercase;
  transition: color .25s cubic-bezier(.16, 1, .3, 1);
}

.cos-footer-links a:hover,
.cos-footer-links a:focus-visible {
  color: var(--os-cyan);
}

.cos-footer-bottom {
  border-top: 1px solid rgba(234, 241, 252, .07);
  padding-top: 1rem;
}

:focus-visible {
  outline: 2px solid var(--os-coral);
  outline-offset: 4px;
}

@media (max-width: 940px) {
  .cos-panel-grid,
  .cos-motion,
  .cos-memory,
  .cos-feeder-grid {
    grid-template-columns: 1fr;
  }

  .cos-tool-panel {
    min-height: 18rem;
  }
}

@media (max-width: 720px) {
  .cos-nav {
    position: absolute;
    align-items: flex-start;
    flex-direction: column;
  }

  .cos-nav-links {
    gap: .2rem;
    width: 100%;
    justify-content: flex-start;
  }

  .cos-nav-links a {
    padding: .42rem .5rem;
    font-size: .58rem;
  }

  .cos-hero {
    min-height: 91svh;
  }

  .cos-hero h1 {
    font-size: clamp(2.05rem, 9.5vw, 2.35rem);
    line-height: .94;
  }

  .cos-final h2 {
    font-size: clamp(2rem, 9vw, 2.3rem);
  }

  .cos-hero-scrim {
    background:
      linear-gradient(180deg, rgba(3, 6, 9, .82), rgba(3, 6, 9, .55) 38%, var(--os-void) 100%);
  }

  .cos-after ul {
    grid-template-columns: 1fr;
  }

  .cos-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .cos-actions.centered {
    align-items: center;
  }

  .cos-btn,
  .cos-text-link {
    width: 100%;
  }

  .cos-footer-inner,
  .cos-footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }

  .cos-footer-links {
    justify-content: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .cos-hero-video {
    display: none;
  }

  .cos-hero {
    background-image: url("/images/poster-campaign-os-hero.jpg");
    background-position: center;
    background-size: cover;
  }

  *,
  *::before,
  *::after {
    animation-duration: .001ms;
    animation-iteration-count: 1;
    scroll-behavior: auto;
    transition-duration: .001ms;
  }
}