:root {
  --bg: #08171f;
  --bg-alt: #0c202b;
  --panel: #10293a;
  --line: #1d4257;
  --cyan: #3cc9e8;
  --cyan-dark: #1fa9c9;
  --text: #e8f7fb;
  --muted: #92b3c2;
  --radius: 12px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Nunito", system-ui, -apple-system, "Segoe UI", sans-serif;
  line-height: 1.6;
}
[hidden] { display: none !important; }
a { color: var(--cyan); }
img { max-width: 100%; height: auto; }
code {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 1px 7px;
  border-radius: 6px;
  font-size: .92em;
}
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }

.wrap { width: min(1080px, 100% - 40px); margin-inline: auto; }
.narrow { width: min(720px, 100% - 40px); }
.center { text-align: center; }
.muted { color: var(--muted); }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 10;
  background: rgba(8, 23, 31, .92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.nav nav { display: flex; align-items: center; gap: 22px; }
.nav nav a { color: var(--muted); text-decoration: none; font-weight: 600; }
.nav nav a:hover { color: var(--text); }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 800; font-size: 1.25rem; }
.nav nav a.btn { color: #05202a; }

/* Buttons */
.btn {
  display: inline-block;
  background: var(--cyan);
  color: #05202a;
  padding: 12px 24px;
  border-radius: 10px;
  font-weight: 800;
  text-decoration: none;
  border: 2px solid var(--cyan);
  transition: background .15s;
}
.btn:hover { background: var(--cyan-dark); border-color: var(--cyan-dark); }
.btn-small { padding: 7px 16px; }
.btn-ghost { background: transparent; color: var(--cyan); }
.btn-ghost:hover { background: rgba(60, 201, 232, .12); border-color: var(--cyan); }

/* Hero */
.hero { padding: 72px 0 80px; text-align: center; }
.hero-logo { display: block; margin: 0 auto 20px; }
h1 { font-size: clamp(2rem, 5vw, 3.2rem); line-height: 1.15; margin: 0 0 14px; font-weight: 800; }
.rotator { font-size: 1.4rem; margin: 0 0 6px; color: var(--muted); }
.rotator strong { color: var(--cyan); }
.lead { max-width: 520px; margin: 0 auto 28px; color: var(--muted); font-size: 1.1rem; }
.actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* Sections */
.section { padding: 72px 0; }
.section.alt { background: var(--bg-alt); border-block: 1px solid var(--line); }
h2 { font-size: 1.9rem; margin: 0 0 20px; }
.cta { border-top: 1px solid var(--line); }

/* Features */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 18px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.card h3 { margin: 0 0 8px; font-size: 1.15rem; }
.card p { margin: 0; color: var(--muted); }

/* Commands */
.tabs { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 20px; }
.tab {
  font: inherit; font-weight: 700; cursor: pointer;
  background: var(--panel); color: var(--muted);
  border: 1px solid var(--line); border-radius: 999px; padding: 8px 18px;
}
.tab:hover { color: var(--text); }
.tab[aria-selected="true"] { background: var(--cyan); border-color: var(--cyan); color: #05202a; }
.cmd-list { display: grid; gap: 10px; }
.cmd { display: grid; grid-template-columns: minmax(240px, 40%) 1fr; gap: 6px 20px; background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 12px 16px; }
.cmd code { background: none; border: none; padding: 0; color: var(--cyan); font-weight: 600; word-break: break-word; }
.cmd span { color: var(--muted); }

/* Legal */
.legal { padding: 56px 0 72px; }
.legal h1 { font-size: 2.2rem; margin-bottom: 4px; }
.legal h3 { margin: 32px 0 6px; font-size: 1.15rem; }
.legal p, .legal li { color: #cbe3ec; }

/* Footer */
.footer { background: #061219; border-top: 1px solid var(--line); padding-top: 48px; }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; }
.footer-brand p { margin: 10px 0 0; max-width: 300px; }
.footer h4 { margin: 0 0 10px; font-size: 1rem; }
.footer-inner > div > a { display: block; color: var(--muted); text-decoration: none; padding: 3px 0; }
.footer-inner > div > a:hover { color: var(--cyan); }
.footer-bottom { border-top: 1px solid var(--line); margin-top: 40px; padding: 20px 0; color: var(--muted); font-size: .9rem; }

@media (max-width: 760px) {
  .nav nav a:not(.btn) { display: none; }
  .cmd { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .hero { padding: 48px 0 56px; }
  .section { padding: 52px 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn { transition: none; }
}
/* Rotating hero text */
.rotator strong { display: inline-block; transition: opacity .35s, transform .35s; }
.rotator strong.out { opacity: 0; transform: translateY(8px); }
@media (prefers-reduced-motion: reduce) { .rotator strong { transition: none; } }

.card-icon { display: block; width: 40px; height: 40px; margin-bottom: 12px; }