:root {
  --bg: #071820;
  --bg2: #0c2430;
  --tint: #0f2f3d;
  --ink: #e8f4f8;
  --muted: #9bb8c4;
  --accent: #3ec6b8;
  --accent2: #7dd3fc;
  --line: rgba(255, 255, 255, 0.08);
  --focus: #f0f9ff;
  --max: 1040px;
  --font: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --radius: 1rem;
  --header-h: 3.75rem;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(62, 198, 184, 0.18), transparent 55%),
    radial-gradient(900px 500px at 90% 0%, rgba(125, 211, 252, 0.12), transparent 50%),
    radial-gradient(700px 400px at 50% 100%, rgba(62, 198, 184, 0.06), transparent 60%),
    var(--bg);
  line-height: 1.6;
  font-size: 1.05rem;
  -webkit-font-smoothing: antialiased;
}

body.nav-open { overflow: hidden; }

a {
  color: var(--accent2);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
a:hover { color: #fff; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.btn:focus-visible,
.nav-toggle:focus-visible,
.logo:focus-visible {
  outline-offset: 4px;
}

.wrap {
  width: min(var(--max), calc(100% - 2.5rem));
  margin-inline: auto;
}
.narrow { max-width: 640px; }

.skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: #000;
  color: #fff;
  padding: 0.5rem 1rem;
  z-index: 100;
}
.skip:focus { left: 1rem; top: 1rem; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(7, 24, 32, 0.82);
  border-bottom: 1px solid var(--line);
}

.bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 0;
  gap: 1rem;
  min-height: var(--header-h);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--ink);
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
  font-size: 1.05rem;
}
.logo:hover { color: #fff; }
.logo-mark {
  display: block;
  border-radius: 6px;
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 0.65rem;
  background: rgba(255, 255, 255, 0.03);
  color: var(--ink);
  cursor: pointer;
}
.nav-toggle:hover {
  border-color: rgba(62, 198, 184, 0.45);
  background: rgba(62, 198, 184, 0.08);
}

.nav-toggle-bars,
.nav-toggle-bars::before,
.nav-toggle-bars::after {
  display: block;
  width: 1.15rem;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle-bars { position: relative; }
.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
}
.nav-toggle-bars::before { top: -6px; }
.nav-toggle-bars::after { top: 6px; }

.nav-toggle[aria-expanded="true"] .nav-toggle-bars {
  background: transparent;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before {
  top: 0;
  transform: rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after {
  top: 0;
  transform: rotate(-45deg);
}

#site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.25rem;
  align-items: center;
}
#site-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  transition: color 0.15s ease, background 0.15s ease;
}
#site-nav a:hover {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.05);
}

.hero {
  padding: 4.75rem 0 3.75rem;
  position: relative;
}
.hero::after {
  content: "";
  display: block;
  width: min(var(--max), calc(100% - 2.5rem));
  margin: 2.5rem auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(62, 198, 184, 0.35), transparent);
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.72rem;
  color: var(--accent);
  margin: 0 0 1.1rem;
  font-weight: 600;
}

h1 {
  font-size: clamp(2.05rem, 4.6vw, 3.35rem);
  line-height: 1.1;
  margin: 0 0 1.2rem;
  font-weight: 700;
  max-width: 16ch;
  letter-spacing: -0.02em;
}

.page-title {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  letter-spacing: -0.02em;
  margin: 0 0 1.25rem;
}

.lede {
  font-size: 1.18rem;
  color: var(--muted);
  max-width: 52ch;
  margin: 0 0 1.85rem;
  line-height: 1.65;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.78rem 1.3rem;
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease, transform 0.15s ease;
}
.btn.primary {
  background: var(--accent);
  color: #042029;
}
.btn.primary:hover {
  background: #62d9cd;
  color: #042029;
}
.btn.ghost {
  border-color: var(--line);
  color: var(--ink);
  background: transparent;
}
.btn.ghost:hover {
  border-color: var(--accent2);
  color: #fff;
  background: rgba(125, 211, 252, 0.06);
}

@media (prefers-reduced-motion: no-preference) {
  .btn:active { transform: translateY(1px); }
}

.fine { color: var(--muted); font-size: 0.9rem; }
.fine.dark { margin-top: 1.75rem; }

.block { padding: 3.75rem 0; }
.block.tint {
  background: rgba(15, 47, 61, 0.55);
  border-block: 1px solid var(--line);
}
.block.cta {
  text-align: center;
  padding-bottom: 4.75rem;
}
.block.cta p {
  color: var(--muted);
  margin: 0 0 1.5rem;
}

h2 {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  margin: 0 0 1rem;
  letter-spacing: -0.015em;
}
h3 {
  margin: 0 0 0.55rem;
  font-size: 1.08rem;
  letter-spacing: -0.01em;
}

.grid-2 {
  display: grid;
  gap: 2.25rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}
.grid-2 p {
  margin: 0;
  color: var(--muted);
}

.section-intro {
  color: var(--muted);
  max-width: 50ch;
  margin-top: -0.15rem;
  margin-bottom: 0;
}

.cards {
  list-style: none;
  padding: 0;
  margin: 1.85rem 0 0;
  display: grid;
  gap: 1.1rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.cards li {
  background: rgba(7, 24, 32, 0.55);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.35rem 1.3rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.cards li:hover {
  border-color: rgba(62, 198, 184, 0.28);
  box-shadow: 0 0 0 1px rgba(62, 198, 184, 0.08);
}
.cards p {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
}

.steps {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--muted);
  display: grid;
  gap: 0.95rem;
  max-width: 68ch;
}
.steps strong { color: var(--ink); }
.steps li::marker { color: var(--accent); }

.site-footer {
  border-top: 1px solid var(--line);
  padding: 2.25rem 0 2.75rem;
  color: var(--muted);
  font-size: 0.9rem;
}
.site-footer p { margin: 0.3rem 0; }
.footer-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem 2rem;
  align-items: flex-start;
}
.footer-privacy { margin: 0; }
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--accent2); }

@media (max-width: 640px) {
  .nav-toggle { display: inline-flex; }

  #site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0.15rem;
    padding: 0.75rem 1.25rem 1.25rem;
    background: rgba(7, 24, 32, 0.97);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
  }
  #site-nav.is-open { display: flex; }
  #site-nav a {
    padding: 0.85rem 1rem;
    border-radius: 0.65rem;
    font-size: 1.05rem;
  }

  .hero { padding: 3rem 0 2.75rem; }
  .block { padding: 3rem 0; }
  .wrap { width: min(var(--max), calc(100% - 1.75rem)); }
}