:root {
  --bg-top: #0a1424;
  --bg-bottom: #050b16;
  --panel: #0f1e33;
  --panel-line: #1d3352;
  --fg: #e9f2ff;
  --muted: #8ba3c7;
  --muted-dim: #6f88ad;
  --accent: #33b6ff;
  --accent-soft: #5ad1ff;
  --max: 60rem;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

html, body { margin: 0; }

body {
  min-height: 100vh;
  background: radial-gradient(circle at 50% -10%, var(--bg-top), var(--bg-bottom) 70%);
  background-attachment: fixed;
  color: var(--fg);
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}

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

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 1.5rem; }

/* Header / nav */
.site-header {
  border-bottom: 1px solid var(--panel-line);
  background: rgba(5, 11, 22, 0.6);
  backdrop-filter: blur(6px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1.5rem;
  max-width: var(--max);
  margin: 0 auto;
  flex-wrap: wrap;
}

.brand { display: flex; align-items: center; gap: 0.6rem; }
.brand:hover { text-decoration: none; }
.brand img { width: 34px; height: 34px; display: block; }
.brand .name {
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--fg);
}
.brand .name .echo { color: var(--accent); }

.nav-links { display: flex; gap: 1.35rem; flex-wrap: wrap; }
.nav-links a { color: var(--muted); font-size: 0.95rem; }
.nav-links a:hover { color: var(--fg); text-decoration: none; }

/* Hero */
.hero {
  text-align: center;
  padding: 4.5rem 0 2.5rem;
}
.hero-logo {
  width: 200px;
  height: 200px;
  display: block;
  margin: 0 auto 1rem;
}
.hero .eyebrow {
  color: var(--muted);
  letter-spacing: 0.08em;
  font-size: 1.5rem;
  margin: 0 0 1rem;
}
.hero h1 {
  margin: 0;
  font-size: clamp(2.25rem, 6vw, 3.4rem);
  font-weight: 600;
  letter-spacing: 0.01em;
}
.hero h1 .echo { color: var(--accent); }
.hero .lede {
  margin: 1.25rem auto 0;
  max-width: 36rem;
  color: var(--muted);
  font-size: 1.1rem;
}

/* Sections */
section { padding: 2.25rem 0; }
.section-title {
  font-size: 1.35rem;
  font-weight: 600;
  margin: 0 0 1.25rem;
  letter-spacing: 0.01em;
}
.section-title .bar {
  display: inline-block;
  width: 2rem;
  height: 2px;
  background: var(--accent);
  vertical-align: middle;
  margin-right: 0.65rem;
  opacity: 0.8;
}

/* Product cards */
.section-intro { color: var(--muted); margin: -0.25rem 0 1.35rem; }
@media (min-width: 40em) { .section-intro span { white-space: nowrap; } }
.section-note { color: var(--muted-dim); font-size: 0.9rem; margin-top: 1.35rem; }
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1rem;
}
.card {
  background: var(--panel);
  border: 1px solid var(--panel-line);
  border-radius: 12px;
  padding: 1.25rem 1.35rem;
}
.card h3 {
  margin: 0 0 0.15rem;
  font-size: 1.1rem;
  font-weight: 600;
}
.card .host { font-size: 0.85rem; color: var(--accent); word-break: break-word; }
.card p { margin: 0.65rem 0 0; color: var(--muted); font-size: 0.95rem; }
.tag {
  display: inline-block;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-soft);
  border: 1px solid var(--panel-line);
  border-radius: 999px;
  padding: 0.15rem 0.6rem;
  margin-top: 0.85rem;
}
.tag.dev { color: var(--muted-dim); }

/* SMS / messaging callout */
.callout {
  background: var(--panel);
  border: 1px solid var(--panel-line);
  border-left: 3px solid var(--accent);
  border-radius: 12px;
  padding: 1.5rem 1.6rem;
}
.callout p { margin: 0 0 0.85rem; }
.callout p:last-child { margin-bottom: 0; }
.callout .muted { color: var(--muted); font-size: 0.95rem; }
.callout strong { color: var(--fg); }

/* Legal / prose pages */
.prose { padding: 2.5rem 0 1rem; max-width: 44rem; }
.prose h1 { font-size: 1.9rem; margin: 0 0 0.35rem; font-weight: 600; }
.prose .updated { color: var(--muted-dim); font-size: 0.9rem; margin: 0 0 2rem; }
.prose h2 {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 2rem 0 0.5rem;
  color: var(--fg);
}
.prose p, .prose li { color: var(--muted); }
.prose p { margin: 0.6rem 0; }
.prose ul { margin: 0.6rem 0; padding-left: 1.4rem; }
.prose li { margin: 0.35rem 0; }
.prose strong { color: var(--fg); }

/* Footer */
.site-footer {
  border-top: 1px solid var(--panel-line);
  margin-top: 2.5rem;
  padding: 2rem 0 2.5rem;
  color: var(--muted-dim);
  font-size: 0.88rem;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.footer-links { display: flex; gap: 1.25rem; flex-wrap: wrap; }
.footer-links a { color: var(--muted); }