:root {
  color-scheme: dark;
  --ink: #f5f6ff;
  --muted: #aeb5cb;
  --night: #070b17;
  --night-soft: #0d1427;
  --panel: #111a31;
  --line: rgba(220, 226, 255, 0.14);
  --periwinkle: #aebcff;
  --teal: #7ed8cf;
  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;
  color: var(--ink);
  background:
    radial-gradient(circle at 78% 8%, rgba(91, 111, 202, 0.16), transparent 30rem),
    var(--night);
  line-height: 1.65;
}

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

a:focus-visible {
  outline: 3px solid var(--teal);
  outline-offset: 4px;
  border-radius: 6px;
}

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

.nav {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  font-size: 18px;
  font-weight: 760;
  letter-spacing: -0.03em;
}

.nav-links,
.footer-links {
  display: flex;
  gap: 24px;
  color: var(--muted);
  font-size: 14px;
}

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

.hero {
  min-height: 680px;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 72px;
  align-items: center;
  padding-block: 72px 108px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--teal);
  font-size: 12px;
  font-weight: 760;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 25px;
  font-size: clamp(50px, 6vw, 84px);
  font-weight: 690;
  line-height: 0.98;
  letter-spacing: -0.065em;
}

h2 {
  margin-bottom: 20px;
  font-size: clamp(34px, 4vw, 54px);
  line-height: 1.04;
  letter-spacing: -0.05em;
}

h3 {
  margin-bottom: 9px;
  font-size: 18px;
  letter-spacing: -0.025em;
}

.lede,
.section-intro > p:last-child,
.cta > p:last-child {
  max-width: 590px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-top: 36px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border-radius: 999px;
  color: #0b1020;
  background: var(--periwinkle);
  font-weight: 760;
}

.text-link {
  color: var(--muted);
  font-size: 14px;
  text-decoration: underline;
  text-decoration-color: rgba(174, 181, 203, 0.45);
  text-underline-offset: 4px;
}

.phone-stage {
  min-height: 520px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 42px;
  background:
    radial-gradient(circle at 76% 15%, rgba(174, 188, 255, 0.22), transparent 22%),
    linear-gradient(160deg, #17244b, #090f21 68%);
  box-shadow: 0 34px 80px rgba(0, 0, 0, 0.35);
}

.phone-stage img {
  width: min(58%, 300px);
  height: auto;
  border: 8px solid #070a14;
  border-radius: 32px;
  box-shadow: 0 32px 70px rgba(0, 0, 0, 0.5);
}

.trust-strip {
  border-block: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.018);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  padding-block: 28px;
}

.trust-grid p {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 0;
}

.trust-grid strong {
  font-size: 24px;
}

.trust-grid span {
  color: var(--muted);
  font-size: 14px;
}

.section {
  padding-block: 126px;
}

.section-intro {
  max-width: 710px;
}

.sound-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 56px;
}

.sound-card {
  min-height: 250px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01));
}

.sound-card p,
.principle-list p,
.legal p,
.legal li {
  color: var(--muted);
}

.sound-icon {
  width: 47px;
  height: 47px;
  display: grid;
  place-items: center;
  margin-bottom: 68px;
  border-radius: 50%;
  color: #090d19;
  font-size: 12px;
  font-weight: 800;
  background: var(--periwinkle);
}

.sound-card:nth-child(2) .sound-icon {
  background: #d3b7ff;
}

.sound-card:nth-child(3) .sound-icon {
  background: var(--teal);
}

.sound-card:nth-child(4) .sound-icon {
  background: #f2cf98;
}

.principles {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 90px;
  border-top: 1px solid var(--line);
}

.principle-list article {
  display: grid;
  grid-template-columns: 50px 1fr;
  gap: 18px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.principle-list article > span {
  color: var(--teal);
  font-size: 12px;
}

.principle-list p {
  margin: 0;
}

.cta {
  margin-bottom: 110px;
  padding: 80px 24px;
  text-align: center;
  border: 1px solid var(--line);
  border-radius: 36px;
  background: radial-gradient(circle at 50% 0, rgba(119, 139, 238, 0.18), transparent 70%);
}

.cta p {
  margin-inline: auto;
}

footer {
  padding-block: 34px;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
}

.footer-grid > p:last-child {
  margin: 0;
  text-align: right;
  font-size: 13px;
}

.legal {
  width: min(820px, calc(100% - 40px));
  min-height: 70vh;
  margin-inline: auto;
  padding-block: 72px 120px;
}

.legal h1 {
  font-size: clamp(44px, 6vw, 68px);
}

.legal h2 {
  margin-top: 44px;
  font-size: 26px;
}

.legal h3 {
  margin-top: 28px;
}

.legal ul,
.legal ol {
  padding-left: 22px;
}

.legal-meta {
  color: var(--teal);
  font-size: 13px;
}

.back-link {
  display: inline-block;
  margin-bottom: 48px;
  color: var(--muted);
}

.support-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 40px;
}

.support-card {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--night-soft);
}

.support-card p {
  margin-bottom: 0;
  color: var(--muted);
}

@media (max-width: 820px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 45px;
  }

  .phone-stage {
    min-height: 470px;
  }

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

  .principles {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .footer-grid > p:last-child {
    text-align: left;
  }
}

@media (max-width: 520px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding-block: 18px;
  }

  .hero {
    min-height: auto;
    gap: 46px;
  }

  h1 {
    font-size: 48px;
  }

  .phone-stage {
    min-height: 430px;
    border-radius: 28px;
  }

  .sound-grid,
  .support-cards {
    grid-template-columns: 1fr;
  }

  .trust-grid {
    gap: 20px;
  }

  .trust-grid p {
    display: block;
  }

  .trust-grid span {
    display: block;
    margin-top: 4px;
  }

  .nav-links {
    gap: 14px;
  }

  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
  }
}