:root {
  --navy: #062b57;
  --navy-deep: #031d3a;
  --teal: #03999b;
  --teal-dark: #027a7d;
  --gold: #f3a400;
  --cream: #f8f5ee;
  --white: #ffffff;
  --ink: #142033;
  --muted: #5d6979;
  --line: #dbe3e9;
  --shadow: 0 18px 50px rgba(3, 29, 58, 0.12);
  --radius: 24px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

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

a {
  color: inherit;
}

.container {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
}

.narrow {
  width: min(780px, calc(100% - 40px));
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(219, 227, 233, 0.85);
}

.header-inner {
  min-height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  width: min(430px, 52vw);
}

.brand img {
  width: 100%;
}

nav {
  display: flex;
  gap: 24px;
}

nav a {
  text-decoration: none;
  color: var(--navy);
  font-weight: 700;
  font-size: 0.95rem;
}

nav a:hover {
  color: var(--teal-dark);
}

.hero {
  overflow: hidden;
  background:
    radial-gradient(circle at 80% 20%, rgba(3, 153, 155, 0.16), transparent 28%),
    linear-gradient(135deg, #ffffff 0%, #f6fafb 55%, #eef7f6 100%);
}

.hero-inner {
  min-height: 690px;
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  align-items: center;
  gap: 56px;
  padding: 80px 0;
}

.eyebrow,
.section-label {
  margin: 0 0 14px;
  color: var(--teal-dark);
  font-size: 0.82rem;
  font-weight: 850;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero h1,
h2,
h3,
p {
  margin-top: 0;
}

.hero h1 {
  margin-bottom: 24px;
  color: var(--navy);
  font-size: clamp(3.4rem, 7vw, 6.7rem);
  line-height: 0.98;
  letter-spacing: -0.065em;
}

.hero h1 span {
  color: var(--teal);
}

.hero-lead {
  max-width: 680px;
  color: var(--muted);
  font-size: clamp(1.15rem, 2vw, 1.38rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  padding: 0 24px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 850;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: var(--white);
  background: var(--navy);
  box-shadow: 0 12px 24px rgba(6, 43, 87, 0.22);
}

.button-primary:hover {
  background: var(--navy-deep);
}

.button-secondary {
  color: var(--navy);
  background: var(--white);
  border: 1px solid var(--line);
}

.button-light {
  color: var(--navy);
  background: var(--white);
}

.disabled {
  pointer-events: none;
  opacity: 0.7;
}

.hero-mark {
  position: relative;
}

.hero-mark::before {
  content: "";
  position: absolute;
  inset: 12%;
  z-index: -1;
  border-radius: 50%;
  background: var(--gold);
  filter: blur(70px);
  opacity: 0.12;
}

.hero-mark img {
  width: min(100%, 520px);
  margin: 0 auto;
  filter: drop-shadow(0 24px 44px rgba(6, 43, 87, 0.15));
}

.intro {
  padding: 110px 0;
  text-align: center;
}

.intro h2,
.channel h2,
.follow h2 {
  color: var(--navy);
  font-size: clamp(2.3rem, 5vw, 4.5rem);
  line-height: 1.05;
  letter-spacing: -0.045em;
}

.intro p:not(.section-label) {
  color: var(--muted);
  font-size: 1.18rem;
}

.channel {
  padding: 100px 0;
  background: var(--cream);
}

.channel-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 70px;
  align-items: start;
}

.channel-lead {
  color: var(--muted);
  font-size: 1.22rem;
}

.check-list {
  padding: 0;
  margin: 34px 0 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding: 13px 0 13px 34px;
  border-bottom: 1px solid rgba(6, 43, 87, 0.1);
  font-weight: 700;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--teal);
  font-weight: 900;
}

.launch-card {
  padding: 38px;
  border-radius: var(--radius);
  color: var(--white);
  background:
    radial-gradient(circle at top right, rgba(3, 153, 155, 0.75), transparent 36%),
    var(--navy);
  box-shadow: var(--shadow);
}

.launch-card h3 {
  margin: 20px 0 14px;
  font-size: 2rem;
  line-height: 1.1;
}

.launch-card p {
  color: rgba(255, 255, 255, 0.78);
}

.launch-card .button {
  margin-top: 12px;
  color: var(--navy);
  background: var(--white);
}

.launch-badge {
  display: inline-block;
  padding: 7px 12px;
  border-radius: 999px;
  color: var(--navy);
  background: var(--gold);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.topics {
  padding: 105px 0;
}

.centered {
  text-align: center;
}

.topic-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 34px;
}

.topic-grid article {
  min-height: 260px;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--white);
  box-shadow: 0 10px 35px rgba(6, 43, 87, 0.06);
}

.topic-grid span {
  color: var(--gold);
  font-size: 0.9rem;
  font-weight: 900;
}

.topic-grid h3 {
  margin: 46px 0 12px;
  color: var(--navy);
  font-size: 1.35rem;
}

.topic-grid p {
  color: var(--muted);
}

.follow {
  padding: 90px 0;
  color: var(--white);
  background:
    linear-gradient(115deg, rgba(3, 153, 155, 0.28), transparent 42%),
    var(--navy);
}

.follow-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 50px;
}

.follow h2 {
  max-width: 700px;
  margin-bottom: 18px;
  color: var(--white);
}

.follow p:not(.section-label) {
  max-width: 760px;
  color: rgba(255, 255, 255, 0.76);
  font-size: 1.08rem;
}

footer {
  padding: 28px 0;
  color: #758092;
  background: #f7f9fa;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
}

.footer-inner img {
  width: 48px;
  height: 48px;
  border-radius: 50%;
}

.footer-inner p {
  margin: 0;
  font-size: 0.92rem;
}

@media (max-width: 900px) {
  nav {
    display: none;
  }

  .brand {
    width: min(430px, 82vw);
  }

  .hero-inner,
  .channel-grid {
    grid-template-columns: 1fr;
  }

  .hero-inner {
    padding: 66px 0 72px;
  }

  .hero-copy {
    text-align: center;
  }

  .hero-lead {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-mark img {
    width: min(86vw, 430px);
  }

  .topic-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .follow-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 560px) {
  .container,
  .narrow {
    width: min(100% - 28px, 1160px);
  }

  .header-inner {
    min-height: 70px;
  }

  .hero h1 {
    font-size: clamp(3.05rem, 17vw, 4.7rem);
  }

  .hero-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .intro,
  .channel,
  .topics,
  .follow {
    padding: 72px 0;
  }

  .launch-card {
    padding: 28px;
  }

  .topic-grid {
    grid-template-columns: 1fr;
  }

  .topic-grid article {
    min-height: 220px;
  }

  .footer-inner {
    text-align: center;
    flex-direction: column;
  }
}