/* InboxBay marketing — mobile-first, no asset pipeline */
:root {
  --bg: #070b14;
  --bg-2: #0b1220;
  --panel: #10182a;
  --panel-2: #162033;
  --line: #243049;
  --text: #f4f6f8;
  --muted: #9aa6b8;
  --soft: #c7d0de;
  --blue: #2f80ff;
  --purple: #7c4dff;
  --green: #25d366;
  --pink: #e1306c;
  --ms: #0084ff;
  --warn: #f6d38d;
  --warn-bg: #271d0e;
  --radius: 18px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  --max: 1120px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { margin: 0; padding: 0; max-width: 100%; overflow-x: hidden; }
body {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: #6aa6ff; }
.skip {
  position: absolute; left: -999px; top: 8px;
  background: var(--blue); color: #fff; padding: 8px 12px; border-radius: 8px; z-index: 20;
}
.skip:focus { left: 12px; }
.wrap { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; }
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(7, 11, 20, 0.86);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 0; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 750; }
.brand img { width: 36px; height: 36px; }
.nav-links { display: none; gap: 18px; align-items: center; }
.nav-links a { color: var(--soft); text-decoration: none; font-size: 14px; }
.nav-links a:hover { color: var(--text); }
.nav-cta { display: flex; gap: 8px; align-items: center; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 11px; padding: 11px 16px; font-weight: 700; text-decoration: none;
  border: 0; cursor: pointer; font-size: 15px;
}
.btn-primary { background: var(--text); color: var(--bg); }
.btn-primary:hover { color: var(--bg); background: #fff; }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--line); }
.btn-ghost:hover { color: var(--text); border-color: #3b4a68; }
.btn-blue { background: var(--blue); color: #fff; }
.btn-blue:hover { color: #fff; background: #4a91ff; }
.btn-block { width: 100%; }
.hero { padding: 48px 0 28px; }
.eyebrow { color: var(--muted); letter-spacing: .12em; text-transform: uppercase; font-size: 12px; font-weight: 700; }
h1, h2, h3 { line-height: 1.15; letter-spacing: -0.03em; margin: 0 0 12px; }
h1 { font-size: clamp(34px, 7vw, 64px); max-width: 16ch; }
h2 { font-size: clamp(26px, 4vw, 40px); }
h3 { font-size: 20px; }
.lead { font-size: 18px; color: var(--soft); max-width: 62ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin: 22px 0 10px; }
.fine { color: var(--muted); font-size: 14px; }
.section { padding: 56px 0; }
.section.alt { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--bg-2); }
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }
.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px; box-shadow: var(--shadow);
}
.card p, .card li { color: var(--soft); }
.muted { color: var(--muted); }
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  border: 1px solid var(--line); border-radius: 999px; padding: 5px 10px;
  font-size: 12px; color: var(--soft); background: var(--panel-2);
}
.soon { background: #1a1430; border-color: #3b2d6b; color: #c7b7ff; }
.channels { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 0; }
.mock {
  margin-top: 28px; background: var(--panel); border: 1px solid var(--line);
  border-radius: 22px; overflow: hidden; box-shadow: var(--shadow);
}
.mock-bar { display: flex; gap: 8px; padding: 12px 16px; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.mock-grid { display: grid; grid-template-columns: 1fr; }
.mock-list { border-bottom: 1px solid var(--line); }
.mock-row, .bubble, .note {
  margin: 10px; padding: 12px; border-radius: 12px; background: var(--panel-2);
}
.mock-row { display: grid; gap: 2px; }
.mock-row strong { font-size: 14px; }
.mock-row span, .bubble, .note { font-size: 13px; color: var(--soft); }
.mock-thread { padding: 8px 8px 16px; }
.bubble.in { background: #162033; }
.bubble.out { background: var(--blue); color: #fff; margin-left: 18%; }
.note { background: #1a1430; border: 1px solid #3b2d6b; color: #c7b7ff; }
.faq details {
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 14px 16px;
}
.faq details + details { margin-top: 10px; }
.faq summary { cursor: pointer; font-weight: 700; }
.faq details p { color: var(--soft); margin: 10px 0 0; }
.cta-band {
  background: linear-gradient(135deg, #12203a, #1a1430);
  border: 1px solid var(--line); border-radius: 22px; padding: 28px;
}
.site-footer { border-top: 1px solid var(--line); padding: 36px 0 48px; color: var(--muted); font-size: 14px; }
.footer-grid { display: grid; gap: 22px; }
.footer-grid a { color: var(--soft); text-decoration: none; display: block; padding: 4px 0; }
.footer-grid a:hover { color: var(--text); }
.price { font-size: 36px; font-weight: 800; margin: 8px 0; }
.features { list-style: none; padding: 0; margin: 16px 0 22px; }
.features li { padding: 8px 0; border-bottom: 1px solid #1e242b; color: var(--soft); }
.compare { width: 100%; border-collapse: collapse; font-size: 14px; }
.compare th, .compare td { text-align: left; padding: 12px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.compare th { color: var(--muted); font-weight: 600; }
.notice { background: var(--warn-bg); border: 1px solid #5b421d; color: var(--warn); padding: 12px 14px; border-radius: 10px; margin: 0 0 22px; }
.prose p { color: var(--soft); max-width: 70ch; }
.prose ul { color: var(--soft); padding-left: 18px; }
.crumbs { font-size: 13px; color: var(--muted); margin-bottom: 14px; }
.crumbs a { color: var(--soft); }
@media (min-width: 800px) {
  .nav-links { display: flex; }
  .grid-2 { grid-template-columns: 1.1fr .9fr; }
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .mock-grid { grid-template-columns: 320px 1fr; }
  .mock-list { border-bottom: 0; border-right: 1px solid var(--line); }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; }
  .hero { padding: 72px 0 40px; }
}
@media (min-width: 1080px) {
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}