:root {
  --bg: #05080d;
  --panel: #0d1622;
  --ink: #f6fbff;
  --muted: #9dafc2;
  --soft: #d6e4ef;
  --line: rgba(202, 229, 245, .14);
  --cyan: #21d7e8;
  --green: #92ff39;
  --radius: 8px;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: linear-gradient(180deg, #05080d 0%, #07101a 52%, #05080d 100%);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(5, 8, 13, .82);
  backdrop-filter: blur(16px);
}

.nav,
.hero,
.section,
.final-cta {
  width: min(var(--max), calc(100% - 48px));
  margin: 0 auto;
}

.nav {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 21px;
  font-weight: 900;
}

.brand-mark {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(33, 215, 232, .35);
  border-radius: var(--radius);
  color: var(--green);
  background: rgba(33, 215, 232, .08);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 750;
}

.btn {
  min-height: 46px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 0 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 900;
  line-height: 1;
  transition: transform .18s ease, box-shadow .18s ease;
}

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

.btn-primary {
  color: #06100c;
  background: linear-gradient(135deg, var(--green), var(--cyan));
  box-shadow: 0 18px 42px rgba(33, 215, 232, .22);
}

.btn-secondary {
  color: var(--ink);
  border-color: rgba(50, 222, 232, .35);
  background: rgba(255, 255, 255, .03);
}

.hero {
  min-height: calc(100vh - 72px);
  padding: clamp(74px, 9vw, 124px) 0 56px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(380px, 520px);
  gap: clamp(42px, 7vw, 82px);
  align-items: center;
}

.kicker {
  margin-bottom: 18px;
  display: inline-flex;
  color: var(--green);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: .08em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 24px;
  font-size: clamp(44px, 5.4vw, 68px);
  line-height: .98;
  font-weight: 780;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(32px, 4vw, 48px);
  line-height: 1.06;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
}

p {
  color: var(--muted);
  line-height: 1.7;
}

.lead {
  max-width: 650px;
  margin-bottom: 32px;
  color: #bed0df;
  font-size: 18px;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

.hero-card,
.card,
.final-cta {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: linear-gradient(145deg, rgba(16, 29, 43, .88), rgba(6, 13, 22, .9));
  box-shadow: 0 34px 90px rgba(0, 0, 0, .34);
}

.hero-card {
  overflow: hidden;
}

.hero-card img {
  width: 100%;
  aspect-ratio: 16 / 11;
  object-fit: cover;
}

.section {
  padding: clamp(62px, 8vw, 112px) 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.card {
  padding: 24px;
}

.card p {
  margin-bottom: 0;
  font-size: 14px;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
  gap: 34px;
  align-items: start;
}

.list {
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  list-style: none;
}

.list li {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--soft);
  background: rgba(255, 255, 255, .035);
}

.faq {
  display: grid;
  gap: 12px;
}

.faq details {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  background: rgba(255, 255, 255, .035);
}

.faq summary {
  cursor: pointer;
  font-weight: 900;
}

.faq p {
  margin: 12px 0 0;
}

.final-cta {
  margin-bottom: 72px;
  padding: clamp(34px, 5vw, 56px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: center;
  border-color: rgba(50, 222, 232, .35);
}

.text-section {
  max-width: 860px;
}

.text-section h2 {
  max-width: 720px;
}

.text-section p,
.text-section li {
  color: var(--muted);
  line-height: 1.72;
}

.text-section ul,
.text-section ol {
  margin: 0 0 26px;
  padding-left: 22px;
}

.note-panel {
  margin-top: 28px;
  padding: 22px;
  border: 1px solid rgba(50, 222, 232, .35);
  border-radius: 12px;
  color: var(--soft);
  background: rgba(33, 215, 232, .06);
}

@media (max-width: 900px) {
  .hero,
  .split,
  .final-cta {
    grid-template-columns: 1fr;
  }

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

  .nav-links {
    display: none;
  }
}

@media (max-width: 640px) {
  .nav,
  .hero,
  .section,
  .final-cta {
    width: min(100% - 28px, var(--max));
  }

  .button-row .btn,
  .nav .btn {
    width: 100%;
  }

  .nav {
    height: auto;
    min-height: 68px;
    flex-wrap: wrap;
    padding: 12px 0;
  }
}