:root {
  color-scheme: dark;
  --bg: #0b0f14;
  --surface: #161b22;
  --surface-2: #1f2630;
  --border: #2a323c;
  --text: #e6edf3;
  --muted: #9aa7b4;
  --primary: #3b82f6;
  --primary-2: #2563eb;
  --blue-glow: #1d4ed8;
  --green: #1f9d55;
  --yellow: #d9a300;
  --red: #cc2936;
  --maxw: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---- top nav ---- */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(10px);
  background: rgba(11, 15, 20, 0.72);
  border-bottom: 1px solid var(--border);
}
.nav .wrap { display: flex; align-items: center; gap: 16px; height: 64px; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 700; color: var(--text); }
.brand img { width: 32px; height: 32px; border-radius: 8px; }
.nav .spacer { flex: 1; }
.nav a.navlink { color: var(--muted); font-size: 15px; }
.nav a.navlink:hover { color: var(--text); text-decoration: none; }

/* ---- buttons ---- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--primary); color: #fff; font-weight: 700;
  padding: 12px 20px; border-radius: 12px; border: 0; cursor: pointer;
}
.btn:hover { background: var(--primary-2); text-decoration: none; }
.btn.ghost { background: var(--surface-2); color: var(--text); border: 1px solid var(--border); }
.btn.ghost:hover { background: var(--surface); }

/* ---- hero ---- */
.hero {
  position: relative;
  text-align: center;
  padding: 88px 0 64px;
  background:
    radial-gradient(1200px 520px at 50% -10%, rgba(37, 99, 235, 0.35), transparent 60%),
    var(--bg);
}
.hero .appicon { width: 96px; height: 96px; border-radius: 22px; box-shadow: 0 18px 50px rgba(0,0,0,.45); }
.hero h1 { font-size: clamp(34px, 6vw, 56px); margin: 22px 0 10px; letter-spacing: -0.02em; }
.hero p.tag { font-size: clamp(17px, 2.6vw, 22px); color: var(--muted); margin: 0 auto 28px; max-width: 640px; }
.cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.badge-note { margin-top: 16px; font-size: 13px; color: var(--muted); }

/* ---- shots ---- */
.shots {
  display: flex; gap: 22px; overflow-x: auto; padding: 40px 24px 12px;
  scroll-snap-type: x mandatory; justify-content: flex-start;
}
.shots img {
  width: 240px; flex: 0 0 auto; border-radius: 26px;
  border: 1px solid var(--border); scroll-snap-align: center;
  box-shadow: 0 14px 40px rgba(0,0,0,.4);
}
@media (min-width: 920px) { .shots { justify-content: center; } }

/* ---- sections ---- */
section { padding: 64px 0; }
section h2 { font-size: clamp(26px, 4vw, 36px); text-align: center; margin: 0 0 8px; }
section .sub { text-align: center; color: var(--muted); margin: 0 auto 40px; max-width: 560px; }

.features { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.feature {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 16px; padding: 24px;
}
.feature .ic { font-size: 26px; }
.feature h3 { margin: 12px 0 6px; font-size: 18px; }
.feature p { margin: 0; color: var(--muted); font-size: 15px; }

.dot { display: inline-block; width: 12px; height: 12px; border-radius: 50%; vertical-align: middle; }
.dot.g { background: var(--green); } .dot.y { background: var(--yellow); } .dot.r { background: var(--red); }

/* ---- open source band ---- */
.band {
  background: linear-gradient(180deg, var(--surface), var(--bg));
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  text-align: center;
}

/* ---- footer ---- */
footer { padding: 40px 0 56px; color: var(--muted); font-size: 14px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; justify-content: space-between; }
footer a { color: var(--muted); }
footer a:hover { color: var(--text); }
footer .links { display: flex; gap: 18px; }

/* ---- legal doc ---- */
.doc { max-width: 760px; margin: 0 auto; padding: 56px 24px 80px; }
.doc h1 { font-size: 34px; margin-bottom: 4px; }
.doc .updated { color: var(--muted); margin-top: 0; }
.doc h2 { font-size: 22px; margin-top: 40px; border-bottom: 1px solid var(--border); padding-bottom: 8px; }
.doc h3 { font-size: 17px; margin-top: 24px; }
.doc p, .doc li { color: #c8d2dc; }
.doc a.back { font-size: 15px; }
.doc .tldr {
  background: var(--surface); border: 1px solid var(--border);
  border-left: 3px solid var(--primary); border-radius: 12px; padding: 16px 20px;
}
.doc table { width: 100%; border-collapse: collapse; margin: 16px 0; }
.doc th, .doc td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); font-size: 15px; }
.doc th { color: var(--text); }
.doc td { color: var(--muted); }