:root {
  color-scheme: dark;
  --bg: #07090f;
  --panel: #111722;
  --panel-soft: #151d2b;
  --text: #f3f7ff;
  --muted: #a9b5c9;
  --line: rgba(255, 255, 255, 0.14);
  --accent: #5ee4ff;
  --accent-strong: #9dfbca;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
}

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 20% 15%, rgba(94, 228, 255, 0.14), transparent 34rem),
    radial-gradient(circle at 80% 10%, rgba(157, 251, 202, 0.10), transparent 30rem),
    var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

a {
  color: var(--accent);
  text-decoration-color: rgba(94, 228, 255, 0.45);
  text-underline-offset: 0.2em;
}

a:hover {
  color: var(--accent-strong);
}

.site-header,
.section,
.site-footer {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  font-weight: 760;
  letter-spacing: 0;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(94, 228, 255, 0.45);
  border-radius: 8px;
  color: var(--accent);
  background: rgba(94, 228, 255, 0.08);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 0.95rem;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
}

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

.hero {
  min-height: min(760px, calc(100vh - 92px));
  display: grid;
  align-items: center;
  padding: 24px 0 72px;
}

.hero-grid {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
  gap: 56px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent-strong);
  font-size: 0.82rem;
  font-weight: 720;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  letter-spacing: 0;
  line-height: 1.05;
}

h1 {
  max-width: 800px;
  font-size: clamp(3.3rem, 7vw, 6.8rem);
}

h2 {
  font-size: clamp(2rem, 4vw, 3.2rem);
}

h3 {
  font-size: 1.1rem;
}

.lead {
  max-width: 700px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.3rem);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid rgba(94, 228, 255, 0.55);
  border-radius: 8px;
  color: #031018;
  background: var(--accent);
  font-weight: 720;
  text-decoration: none;
}

.button.secondary {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--line);
}

.phone-frame {
  position: relative;
  overflow: hidden;
  width: min(100%, 390px);
  margin-left: auto;
  aspect-ratio: 9 / 16;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 34px;
  background: var(--panel);
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.45);
}

.phone-frame img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.section {
  padding: 72px 0;
  border-top: 1px solid var(--line);
}

.section-intro {
  max-width: 760px;
  margin: 14px 0 36px;
  color: var(--muted);
  font-size: 1.08rem;
}

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

.feature-card,
.support-card {
  min-height: 180px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(17, 23, 34, 0.72);
}

.feature-card p,
.support-card p {
  color: var(--muted);
  margin: 10px 0 0;
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 34px;
}

.steps {
  margin: 28px 0 0;
  padding-left: 1.2rem;
  color: var(--muted);
}

.steps li + li {
  margin-top: 10px;
}

.legal-content {
  max-width: 860px;
}

.legal-content h2 {
  margin-top: 42px;
  font-size: clamp(1.5rem, 3vw, 2rem);
}

.legal-content p,
.legal-content li {
  color: var(--muted);
}

.legal-content p {
  margin: 14px 0 0;
}

.legal-content ul {
  margin: 18px 0 0;
  padding-left: 1.2rem;
}

.legal-content li + li {
  margin-top: 10px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 32px 0 44px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: 0.95rem;
}

@media (max-width: 820px) {
  .site-header,
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero {
    min-height: auto;
    padding-top: 10px;
  }

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

  .phone-frame {
    margin: 0;
    width: min(100%, 320px);
  }
}