* {
  box-sizing: border-box;
}

:root {
  --bg: #0a1020;
  --bg-soft: #10182e;
  --panel: rgba(255, 255, 255, 0.06);
  --panel-strong: rgba(255, 255, 255, 0.1);
  --text: #eef2ff;
  --muted: #b7c2de;
  --line: rgba(255, 255, 255, 0.12);
  --accent: #6ea8ff;
  --accent-2: #8fbcff;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  --radius: 22px;
  --max-width: 1160px;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(110, 168, 255, 0.18), transparent 30%),
    radial-gradient(circle at top right, rgba(143, 188, 255, 0.18), transparent 28%),
    linear-gradient(180deg, #09101f 0%, #0c1427 100%);
  color: var(--text);
  line-height: 1.6;
}

a {
  color: var(--accent-2);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  width: min(100% - 32px, var(--max-width));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(18px);
  background: rgba(9, 16, 31, 0.7);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 78px;
  gap: 20px;
}

.logo {
  color: var(--text);
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.logo span {
  color: var(--accent);
}

.nav nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  align-items: center;
}

.nav nav a {
  color: var(--muted);
  font-weight: 600;
}

.nav-cta {
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
}

.hero {
  padding: 88px 0 48px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 42px;
  align-items: center;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--accent-2);
  margin-bottom: 10px;
}

.hero h1,
.section-heading h2,
.cta h2,
.legal-container h1,
.alt h2 {
  margin: 0 0 16px;
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.hero h1 {
  font-size: clamp(2.8rem, 6vw, 5.2rem);
  max-width: 10ch;
}

.lead {
  color: var(--muted);
  font-size: 1.1rem;
  max-width: 58ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 28px 0 14px;
}

.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  font-weight: 700;
  border: 1px solid transparent;
  transition: transform 0.15s ease, opacity 0.15s ease;
  cursor: pointer;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-primary {
  color: #08101f;
  background: linear-gradient(135deg, var(--accent), #a7c8ff);
}

.btn-secondary {
  color: var(--text);
  background: var(--panel);
  border-color: var(--line);
}

.microcopy {
  color: var(--muted);
  font-size: 0.95rem;
}

.hero-card {
  display: flex;
  justify-content: center;
}

.mail-window {
  width: 100%;
  max-width: 530px;
  background: rgba(8, 14, 27, 0.9);
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.window-top {
  display: flex;
  gap: 8px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
}

.window-top span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.22);
}

.mail-layout {
  display: grid;
  grid-template-columns: 180px 1fr;
  min-height: 390px;
}

.sidebar {
  padding: 22px 18px;
  border-right: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
}

.sidebar h3 {
  margin-top: 0;
}

.sidebar ul {
  list-style: none;
  padding: 0;
  margin: 18px 0 0;
}

.sidebar li {
  padding: 10px 12px;
  border-radius: 12px;
  color: var(--muted);
  margin-bottom: 6px;
}

.sidebar li.active,
.message.selected {
  background: rgba(110, 168, 255, 0.12);
  color: var(--text);
}

.message-list {
  padding: 18px;
  display: grid;
  gap: 12px;
  align-content: start;
}

.message {
  padding: 16px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.message h4 {
  margin: 0 0 8px;
}

.message p {
  margin: 0;
  color: var(--muted);
}

.section {
  padding: 68px 0;
}

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

.section-heading {
  margin-bottom: 26px;
}

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

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.feature-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.feature-card h3 {
  margin-top: 0;
}

.feature-card p,
.two-col p,
.legal-container p,
.legal-container li,
.cta p {
  color: var(--muted);
}

.two-col {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 32px;
  align-items: start;
}

.cta {
  text-align: center;
  max-width: 820px;
}

.waitlist-form {
  margin: 26px auto 0;
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 12px;
}

.waitlist-form input {
  min-height: 52px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  padding: 0 16px;
  outline: none;
}

.waitlist-form input::placeholder {
  color: #95a3c5;
}

.form-message {
  margin-top: 14px;
  min-height: 24px;
  color: var(--accent-2);
  font-weight: 600;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 28px 0 36px;
  background: rgba(0, 0, 0, 0.08);
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
  flex-wrap: wrap;
}

.footer-logo {
  display: inline-block;
  margin-bottom: 8px;
}

.footer-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.legal-page {
  padding: 60px 0 80px;
}

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

.legal-updated {
  margin-top: -6px;
  margin-bottom: 34px;
  color: #9eb0d3;
}

.legal-container section {
  margin-bottom: 28px;
  padding-bottom: 6px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.legal-container h2 {
  font-size: 1.2rem;
  margin-bottom: 10px;
}

@media (max-width: 980px) {
  .hero-grid,
  .features-grid,
  .two-col,
  .waitlist-form {
    grid-template-columns: 1fr;
  }

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

  .sidebar {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
}

@media (max-width: 680px) {
  .nav {
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 0;
  }

  .hero {
    padding-top: 54px;
  }

  .hero h1 {
    max-width: 12ch;
  }

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

  .btn {
    width: 100%;
  }
}