:root {
  --color-liquid-abyss: #012624;
  --color-liquid-deep: #011d1c;
  --color-liquid-kelp: #003734;
  --color-liquid-mist: #edfffe;
  --color-platinum: #ffffff;
  --color-silver-mist: #bbc7c6;
  --color-ash: #f2f2f2;
  --color-slate-deep: #707777;
  --color-lavender-phosphor: #fde9ff;
  --color-ink: #222222;
  --gradient-bioluminescent: linear-gradient(90deg, rgb(0, 130, 124) 0%, rgb(203, 255, 252) 100%);
  --gradient-aurora: linear-gradient(90deg, rgb(203, 255, 252) 0%, rgb(237, 255, 254) 26.25%, rgb(255, 253, 250) 47.57%, rgb(250, 209, 255) 88.96%);
  --font-matter: "DM Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-ui: Arial, ui-sans-serif, system-ui, sans-serif;
  --page-max-width: 1440px;
  --wrap: min(1200px, calc(100% - 48px));
  --radius-btn: 6px;
  --radius-card: 16px;
  --section-gap: 68px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-matter);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.4;
  color: var(--color-silver-mist);
  background: var(--color-liquid-abyss);
  min-height: 100vh;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--color-silver-mist);
  text-decoration: none;
}

a:hover {
  color: var(--color-platinum);
}

h1, h2, h3 {
  font-weight: 500;
  color: var(--color-platinum);
  letter-spacing: -0.04em;
  line-height: 1;
  margin: 0;
}

p {
  margin: 0 0 1em;
}

p:last-child {
  margin-bottom: 0;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -40px;
  background: var(--color-liquid-kelp);
  color: var(--color-platinum);
  padding: 8px 12px;
  border-radius: var(--radius-btn);
  z-index: 100;
}

.skip-link:focus {
  top: 16px;
}

.wrap {
  width: var(--wrap);
  margin: 0 auto;
}

.eyebrow {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-silver-mist);
  margin: 0 0 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-ui);
  font-size: 14px;
  line-height: 1.43;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius-btn);
  padding: 14px 22px;
  border: 0;
  cursor: pointer;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
  color: inherit;
}

.btn-gradient {
  background: var(--gradient-aurora);
  color: var(--color-ink);
}

.btn-ghost {
  background: transparent;
  color: var(--color-platinum);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.nav {
  position: absolute;
  inset: 0 0 auto;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px min(48px, 4vw);
  height: 80px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--color-platinum);
  font-weight: 500;
  letter-spacing: 0.16em;
  font-size: 13px;
}

.mark {
  display: inline-flex;
  gap: 4px;
  align-items: center;
}

.mark i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-platinum);
  display: block;
}

.mark i:nth-child(2) {
  background: #7ff5ef;
}

.mark i:nth-child(3) {
  background: var(--color-lavender-phosphor);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-links a {
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-silver-mist);
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--color-platinum);
}

.nav-links .btn {
  color: var(--color-ink);
  letter-spacing: 0.08em;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(237, 255, 254, 0.18);
  background: rgba(3, 81, 75, 0.85);
  border-radius: var(--radius-btn);
  cursor: pointer;
  padding: 0;
}

.nav-toggle span {
  display: block;
  width: 16px;
  height: 1.5px;
  background: var(--color-platinum);
  margin: 5px auto;
}

.hero {
  position: relative;
  min-height: 100svh;
  background: var(--color-liquid-abyss);
  overflow: hidden;
}

.carousel {
  position: relative;
  min-height: 100svh;
}

.carousel-track {
  position: absolute;
  inset: 0;
}

.carousel-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 900ms ease;
}

.carousel-slide.is-active {
  opacity: 1;
}

.carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  color: transparent;
}

.carousel-veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(1, 38, 36, 0.55) 0%, rgba(1, 38, 36, 0.28) 38%, rgba(1, 38, 36, 0.78) 100%),
    radial-gradient(ellipse at 70% 80%, rgba(0, 130, 124, 0.28), transparent 55%);
  pointer-events: none;
}

.hero-copy {
  position: relative;
  z-index: 5;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 96px;
  max-width: 860px;
  margin: 0 auto;
}

.hero-copy h1 {
  font-size: clamp(2.5rem, 7vw, 61px);
  letter-spacing: -0.04em;
  margin-bottom: 20px;
}

.lede {
  font-size: 16px;
  color: var(--color-silver-mist);
  max-width: 560px;
  margin: 0 auto 32px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.carousel-controls {
  position: absolute;
  z-index: 6;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 16px;
}

.carousel-btn {
  width: 32px;
  height: 32px;
  border: 0;
  border-radius: var(--radius-btn);
  background: rgba(3, 81, 75, 0.5);
  color: var(--color-platinum);
  display: grid;
  place-items: center;
  cursor: pointer;
}

.carousel-btn svg {
  width: 16px;
  height: 16px;
}

.carousel-dots {
  display: flex;
  gap: 8px;
}

.carousel-dots button {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 0;
  padding: 0;
  background: rgba(187, 199, 198, 0.4);
  cursor: pointer;
}

.carousel-dots button.is-active {
  background: var(--color-lavender-phosphor);
}

.stats {
  padding: 48px 0 8px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.stats-grid article {
  background: var(--color-liquid-kelp);
  border-radius: var(--radius-card);
  padding: 36px;
}

.stat-value {
  font-size: clamp(36px, 6vw, 61px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--color-lavender-phosphor);
  margin: 0 0 12px;
}

.stat-label {
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-liquid-mist);
  margin: 0;
}

.section {
  padding: var(--section-gap) 0;
}

.section-recessed {
  background: var(--color-liquid-deep);
}

.section-head {
  max-width: 640px;
  margin-bottom: 40px;
}

.section-head h2 {
  font-size: clamp(32px, 5vw, 36px);
  margin-bottom: 16px;
}

.section-copy {
  color: var(--color-silver-mist);
}

.section-copy a {
  color: var(--color-liquid-mist);
  border-bottom: 1px solid rgba(237, 255, 254, 0.25);
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.video-card,
.feed-item,
.surface-card {
  background: var(--color-liquid-kelp);
  border-radius: var(--radius-card);
  overflow: hidden;
}

.video-card a {
  display: block;
  color: inherit;
}

.video-thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--color-liquid-deep);
}

.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.play-badge {
  position: absolute;
  inset: auto 12px 12px auto;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-btn);
  background: rgba(3, 81, 75, 0.7);
  color: var(--color-platinum);
  display: grid;
  place-items: center;
  font-size: 14px;
}

.video-body {
  padding: 28px 28px 32px;
}

.video-date {
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-silver-mist);
  margin-bottom: 12px;
}

.video-body h3 {
  font-size: 20px;
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.video-meta {
  font-size: 13px;
  color: var(--color-silver-mist);
}

.skeleton {
  min-height: 280px;
  background:
    linear-gradient(90deg, var(--color-liquid-kelp) 0%, #02423e 50%, var(--color-liquid-kelp) 100%);
  background-size: 200% 100%;
  animation: shimmer 1.4s linear infinite;
}

@keyframes shimmer {
  to { background-position: -200% 0; }
}

.feed {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.feed-item {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 24px;
  padding: 36px;
}

.feed-kicker {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.feed-date {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-silver-mist);
}

.tag {
  align-self: flex-start;
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-liquid-mist);
  border: 1px solid rgba(237, 255, 254, 0.2);
  border-radius: var(--radius-btn);
  padding: 6px 8px;
}

.feed-item h3 {
  font-size: 24px;
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.feed-item p {
  color: var(--color-silver-mist);
}

.feed-item a.more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-liquid-mist);
}

.feed-status,
.feed-error {
  color: var(--color-silver-mist);
}

.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: center;
}

.about-grid h2 {
  font-size: clamp(32px, 5vw, 36px);
  margin-bottom: 20px;
}

.about-grid p {
  max-width: 56ch;
}

.about-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-liquid-kelp);
  color: var(--color-platinum);
  border-radius: var(--radius-btn);
  padding: 12px 16px;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.molecule {
  padding: 36px;
  display: grid;
  place-items: center;
}

.molecule svg {
  width: min(100%, 320px);
  height: auto;
}

.footer {
  background: var(--color-liquid-deep);
  padding: 80px 0 40px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.2fr 1.4fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-inner p {
  margin-top: 16px;
  max-width: 42ch;
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.footer-cols a {
  display: block;
  margin-bottom: 10px;
  font-size: 14px;
}

.footer-base {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 13px;
}

@media (max-width: 960px) {
  .video-grid,
  .stats-grid,
  .about-grid,
  .footer-inner,
  .feed-item {
    grid-template-columns: 1fr;
  }

  .stats-grid article,
  .feed-item {
    padding: 28px;
  }
}

@media (max-width: 720px) {
  :root {
    --wrap: min(1200px, calc(100% - 32px));
  }

  .nav-toggle {
    display: grid;
    place-items: center;
    z-index: 30;
  }

  .nav-links {
    position: fixed;
    inset: 0;
    background: var(--color-liquid-deep);
    flex-direction: column;
    justify-content: center;
    gap: 28px;
    transform: translateX(100%);
    transition: transform 0.28s ease;
    z-index: 25;
  }

  .nav.is-open .nav-links {
    transform: translateX(0);
  }

  .hero-copy {
    padding: 108px 20px 88px;
    align-items: flex-start;
    text-align: left;
  }

  .lede {
    margin-left: 0;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .footer-cols,
  .footer-base {
    grid-template-columns: 1fr;
    display: grid;
  }

  .section {
    padding: 56px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .carousel-slide,
  .skeleton,
  .nav-links,
  .btn { transition: none; animation: none; }
}