:root {
  color-scheme: dark;
  --bg: #070a12;
  --surface: rgba(16, 22, 34, 0.78);
  --surface-strong: #121927;
  --line: rgba(255, 255, 255, 0.12);
  --text: #f5f7fb;
  --muted: #a9b2c3;
  --cyan: #23d5e8;
  --green: #34e49c;
  --pink: #ff5d99;
  --amber: #f7b267;
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.42);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 18% 8%, rgba(35, 213, 232, 0.14), transparent 28rem),
    radial-gradient(circle at 80% 18%, rgba(255, 93, 153, 0.12), transparent 26rem),
    linear-gradient(180deg, #070a12 0%, #0c111b 46%, #070a12 100%);
  color: var(--text);
  min-height: 100vh;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px clamp(18px, 5vw, 72px);
  background: rgba(7, 10, 18, 0.78);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.brand,
.nav,
.hero-actions,
.site-footer {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  text-decoration: none;
  font-size: 20px;
  font-weight: 800;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(35, 213, 232, 0.44);
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(35, 213, 232, 0.22), rgba(255, 93, 153, 0.12));
  color: var(--cyan);
  font-size: 13px;
  letter-spacing: 0;
}

.nav {
  gap: 24px;
  color: var(--muted);
  font-size: 14px;
}

.nav a,
.site-footer a {
  text-decoration: none;
}

.nav a:hover,
.site-footer a:hover {
  color: var(--text);
}

.header-action,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border-radius: 8px;
  border: 1px solid var(--line);
  padding: 0 18px;
  text-decoration: none;
  font-weight: 800;
}

.header-action {
  color: var(--cyan);
  background: rgba(35, 213, 232, 0.09);
}

.hero {
  position: relative;
  display: grid;
  align-items: end;
  min-height: calc(100vh - 78px);
  padding: clamp(36px, 7vw, 84px);
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero-media {
  position: absolute;
  inset: 0;
}

.hero-media::after {
  position: absolute;
  inset: 0;
  content: "";
  background:
    linear-gradient(90deg, rgba(7, 10, 18, 0.96) 0%, rgba(7, 10, 18, 0.76) 42%, rgba(7, 10, 18, 0.36) 100%),
    linear-gradient(180deg, rgba(7, 10, 18, 0.2) 0%, rgba(7, 10, 18, 0.92) 100%);
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.86;
}

.hero-content {
  position: relative;
  max-width: 760px;
  padding-top: min(18vh, 140px);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--green);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 18px;
  font-size: clamp(64px, 12vw, 142px);
  line-height: 0.9;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(34px, 5vw, 64px);
  line-height: 1;
  letter-spacing: 0;
}

h3 {
  font-size: 21px;
}

.lead {
  max-width: 680px;
  margin-bottom: 28px;
  color: #d6dfed;
  font-size: clamp(18px, 2.6vw, 24px);
  line-height: 1.45;
}

.hero-actions {
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  min-width: 180px;
  min-height: 54px;
}

.button.primary {
  border-color: rgba(35, 213, 232, 0.6);
  background: linear-gradient(135deg, #12bfd5, #2ee79b);
  color: #061016;
  box-shadow: 0 16px 42px rgba(35, 213, 232, 0.22);
}

.button.secondary {
  background: rgba(255, 255, 255, 0.07);
  color: var(--text);
}

.signal-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border-bottom: 1px solid var(--line);
}

.signal-band div {
  min-height: 118px;
  padding: 26px clamp(18px, 4vw, 38px);
  background: rgba(12, 17, 27, 0.94);
}

.signal-band strong,
.signal-band span {
  display: block;
}

.signal-band strong {
  margin-bottom: 6px;
  font-size: 32px;
}

.signal-band span {
  color: var(--muted);
}

.section,
.plans,
.faq,
.final-cta {
  padding: clamp(56px, 8vw, 108px) clamp(18px, 5vw, 72px);
}

.section {
  display: grid;
  grid-template-columns: minmax(280px, 0.8fr) minmax(320px, 1.2fr);
  gap: clamp(28px, 6vw, 70px);
}

.section-copy {
  max-width: 640px;
}

.section-copy p:not(.eyebrow),
.feature-grid p,
.plans-note,
.faq-list p,
.final-cta p {
  color: var(--muted);
  line-height: 1.6;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.feature-grid article,
.plan-grid article,
.faq-list details,
.final-cta {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.feature-grid article {
  min-height: 178px;
  padding: 26px;
}

.feature-grid article:nth-child(1) {
  border-color: rgba(35, 213, 232, 0.3);
}

.feature-grid article:nth-child(2) {
  border-color: rgba(52, 228, 156, 0.28);
}

.feature-grid article:nth-child(3) {
  border-color: rgba(255, 93, 153, 0.28);
}

.feature-grid article:nth-child(4) {
  border-color: rgba(247, 178, 103, 0.28);
}

.plans {
  background: rgba(255, 255, 255, 0.03);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.plan-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 26px;
}

.plan-grid article {
  padding: 28px;
}

.plan-grid article.featured {
  border-color: rgba(35, 213, 232, 0.55);
  background: linear-gradient(180deg, rgba(35, 213, 232, 0.18), rgba(18, 25, 39, 0.9));
}

.plan-grid span {
  color: var(--green);
  font-weight: 800;
}

.plan-grid strong {
  display: block;
  margin: 12px 0;
  font-size: clamp(38px, 5vw, 58px);
}

.plans-note {
  margin: 18px 0 0;
}

.faq {
  display: grid;
  grid-template-columns: minmax(260px, 0.8fr) minmax(320px, 1.2fr);
  gap: clamp(28px, 6vw, 70px);
}

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

.faq-list details {
  padding: 22px 24px;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 800;
}

.faq-list p {
  margin: 14px 0 0;
}

.final-cta {
  margin: clamp(24px, 5vw, 56px) clamp(18px, 5vw, 72px) clamp(56px, 8vw, 96px);
  padding: clamp(34px, 6vw, 64px);
  text-align: center;
  background:
    linear-gradient(135deg, rgba(35, 213, 232, 0.2), rgba(255, 93, 153, 0.12)),
    var(--surface-strong);
}

.final-cta h2,
.final-cta p {
  max-width: 740px;
  margin-left: auto;
  margin-right: auto;
}

.site-footer {
  justify-content: space-between;
  gap: 18px;
  padding: 28px clamp(18px, 5vw, 72px);
  color: var(--muted);
  border-top: 1px solid var(--line);
}

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

  .hero {
    min-height: 92vh;
    align-items: center;
  }

  .hero-media::after {
    background:
      linear-gradient(180deg, rgba(7, 10, 18, 0.62) 0%, rgba(7, 10, 18, 0.96) 72%),
      linear-gradient(90deg, rgba(7, 10, 18, 0.7), rgba(7, 10, 18, 0.4));
  }

  .signal-band,
  .section,
  .faq,
  .plan-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 620px) {
  .site-header {
    padding: 14px 16px;
  }

  .header-action {
    min-height: 38px;
    padding: 0 12px;
    font-size: 13px;
  }

  .hero {
    padding: 28px 18px 42px;
  }

  h1 {
    font-size: 68px;
  }

  .lead {
    font-size: 17px;
  }

  .button,
  .hero-actions {
    width: 100%;
  }

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

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

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}