:root {
  --void: #000000;
  --deep: #120C22;
  --violet: #2A2350;
  --violet-bright: #493C81;
  --surface: rgba(255,255,255,0.05);
  --surface-strong: rgba(255,255,255,0.09);
  --line: rgba(255,255,255,0.14);

  --ink: #FFFFFF;
  --ink-soft: #C7C0DE;
  --ink-faint: #8B84AC;

  --lavender: #AB96FF;
  --lavender-strong: #C7BAFF;
  --grad-a: #4FA3E3;
  --grad-b: #F0A868;

  --good: #5FCB86; --good-bg: rgba(95,203,134,0.12);
  --critical: #E8776B; --critical-bg: rgba(232,119,107,0.12);

  --sans: Arial, Helvetica, "Segoe UI", sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", "Roboto Mono", Consolas, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--void); color: var(--ink); font-family: var(--sans);
  line-height: 1.55;
}
a { color: var(--lavender-strong); }
:focus-visible { outline: 2px solid var(--lavender); outline-offset: 2px; }

.bg {
  position: fixed; inset: 0; z-index: -1;
  background:
    linear-gradient(180deg, var(--void) 0%, var(--deep) 12%, var(--violet) 42%, var(--violet-bright) 58%, var(--violet) 74%, var(--deep) 90%, var(--void) 100%);
}

.shell { max-width: 1040px; margin: 0 auto; padding: 0 1.6rem 5rem; }

/* ---- nav ---- */
/* Matches the sinana.ai brand site's header: flat black, no border, no shadow, 60px tall. */
.navbar { background: var(--void); }
.navbar .shell { padding-bottom: 0; }
nav.top { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { display: flex; align-items: center; gap: 0.7rem; text-decoration: none; }
.brand canvas { display: block; }
.brand .word { font-weight: 600; font-size: 1.05rem; letter-spacing: 0.08em; color: var(--ink); }
.navlinks { display: flex; align-items: center; gap: 2rem; }
.navlinks a { color: var(--ink-soft); text-decoration: none; font-size: 0.9rem; }
.navlinks a:hover { color: var(--ink); }
.navlinks a.active { color: var(--lavender-strong); font-weight: 600; }
.authgroup { display: flex; align-items: center; gap: 0.9rem; }
.who { font-size: 0.82rem; color: var(--ink-soft); display: flex; align-items: center; }
.who .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--good); margin-right: 0.45rem; }

.pillbtn {
  background: var(--lavender); color: #1A1030; border: none; border-radius: 999px;
  padding: 0.55rem 1.3rem; font-size: 0.86rem; font-weight: 700; cursor: pointer; font-family: var(--sans);
  text-decoration: none; display: inline-flex; align-items: center;
}
.pillbtn:hover { background: var(--lavender-strong); }
.pillbtn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.pillbtn.ghost:hover { border-color: var(--ink-faint); }
.pillbtn.big { padding: 0.75rem 1.7rem; font-size: 0.95rem; }
.pillbtn:disabled { opacity: 0.55; cursor: default; }
[hidden] { display: none !important; }

.eyebrow {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink-faint); display: block; margin-bottom: 1.2rem;
}

.section { padding: 4.2rem 0 1rem; }
.section-head { max-width: 50ch; margin: 0 auto 2.4rem; text-align: center; }
.section-head .eyebrow { margin-bottom: 0.9rem; }
.section-head h2 { font-size: 1.9rem; font-weight: 300; margin: 0; letter-spacing: -0.01em; }
.section-head h2 b { font-weight: 700; color: var(--lavender-strong); }

.chip-row { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.chip {
  font-size: 0.86rem; padding: 0.5rem 0.95rem; border: 1px solid var(--line); border-radius: 999px;
  color: var(--ink-soft); display: flex; align-items: center; gap: 0.5rem; background: var(--surface);
  text-decoration: none;
}
.chip.live { color: var(--ink); border-color: var(--good); }
.chip .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--ink-faint); }
.chip.live .dot { background: var(--good); }

footer {
  margin-top: 4rem; padding-top: 1.6rem; border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 0.6rem;
  font-size: 0.8rem; color: var(--ink-faint);
}
footer .fbrand { display: flex; align-items: center; gap: 0.5rem; }
footer .flinks { display: flex; align-items: center; gap: 1.3rem; }
footer .flinks a { color: var(--ink-faint); text-decoration: none; }
footer .flinks a:hover { color: var(--ink-soft); text-decoration: underline; }

@media (max-width: 760px) {
  .navlinks { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}