/* VigilDesk docs-site — zero external resources (no CDN fonts/JS).
   Design pass 2026-09-12: two-column hero with the real product shot,
   readable small text (WCAG AA), single-row mobile nav, restrained depth. */
:root {
  --bg: #0d1321;
  --bg-soft: #1d2d44;
  --fg: #eef2f7;
  --muted: #aab6cf;          /* was #9fb3c8 — too dim on this background */
  --accent: #e94560;
  --accent-2: #16c79a;
  --card: #16223b;
  --card-2: #1a2846;
  --border: #2b3a55;
  --radius: 12px;
}
* { box-sizing: border-box; }
html, body { overflow-x: hidden; }   /* nav is a horizontal scroller; never let it scroll the page */
body {
  margin: 0;
  font-family: "Segoe UI", Arial, "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent-2); }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

/* ── header ───────────────────────────────────────────────────────────── */
header.site {
  border-bottom: 1px solid var(--border);
  background: rgba(29, 45, 68, 0.85);
  backdrop-filter: blur(8px);
  position: sticky; top: 0; z-index: 20;
}
header.site .wrap { display: flex; align-items: center; gap: 12px; padding: 12px 20px; }
header.site img { height: 34px; width: 34px; flex: 0 0 auto; }
header.site .brand { font-size: 1.15rem; font-weight: 700; letter-spacing: .4px; white-space: nowrap; }
nav {
  margin-left: auto;
  display: flex; align-items: center; gap: 16px;
  overflow-x: auto; scrollbar-width: none; -ms-overflow-style: none;
}
nav::-webkit-scrollbar { display: none; }
nav a { color: var(--muted); text-decoration: none; white-space: nowrap; font-size: .92rem; }
nav a:hover { color: var(--fg); }

/* ── hero: copy on the left, the real product on the right ────────────── */
.hero { padding: 56px 0 24px; }
.hero-flex {
  display: grid; grid-template-columns: 1.05fr 1fr; gap: 44px; align-items: center;
}
.hero .eyebrow {
  color: var(--accent-2); font-weight: 600; letter-spacing: .12em;
  text-transform: uppercase; font-size: .74rem; margin: 0 0 12px;
}
.hero h1 {
  font-size: clamp(2rem, 4.2vw, 3rem); line-height: 1.12; margin: 0 0 16px;
  text-wrap: balance; letter-spacing: -0.02em;
}
.hero .tagline { color: var(--muted); font-size: 1.06rem; margin: 0 0 10px; max-width: 46ch; }
.hero .tagline-zh { color: var(--muted); font-size: .95rem; margin: 0 0 26px; max-width: 46ch; opacity: .92; }
.hero .cta-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-bottom: 14px; }
.hero .fineprint { font-size: .82rem; color: var(--muted); margin: 4px 0 0; max-width: 52ch; }
.hero .fineprint code { font-size: .78rem; word-break: break-all; }
.hero-art { position: relative; }
.hero-art img, .hero-art video {
  width: 100%; height: auto; display: block; border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: 0 24px 60px -24px rgba(0, 0, 0, .75), 0 0 0 1px rgba(22, 199, 154, .06);
}
.hero-fallback { display: none; }
.tour-video {
  width: 100%; height: auto; display: block; border-radius: var(--radius);
  border: 1px solid var(--border); background: #05080f;
  box-shadow: 0 24px 60px -28px rgba(0, 0, 0, .8);
}
.tour-list {
  display: flex; flex-wrap: wrap; gap: 8px 14px; margin: 14px 0 6px;
  font-size: .82rem; color: var(--muted);
}
.tour-list span {
  border: 1px solid var(--border); border-radius: 999px; padding: 4px 12px;
  background: rgba(255, 255, 255, .02);
}
@media (prefers-reduced-motion: reduce) {
  .hero-video { display: none; }
  .hero-fallback { display: block; }
}
.hero-art::after {
  content: ""; position: absolute; inset: -22% -12% auto auto; width: 62%; height: 62%;
  background: radial-gradient(circle, rgba(233, 69, 96, .22), transparent 68%);
  filter: blur(12px); z-index: -1; pointer-events: none;
}

/* ── buttons ──────────────────────────────────────────────────────────── */
.btn {
  display: inline-block; padding: 12px 24px; margin: 0;
  border-radius: 10px; text-decoration: none; font-weight: 600;
  white-space: nowrap; transition: transform .12s ease, box-shadow .12s ease, opacity .12s ease;
}
.btn.primary { background: var(--accent); color: #fff; box-shadow: 0 10px 24px -12px rgba(233, 69, 96, .9); }
.btn.primary:hover { transform: translateY(-1px); box-shadow: 0 14px 30px -12px rgba(233, 69, 96, 1); }
.btn.ghost { border: 1px solid var(--border); color: var(--fg); background: rgba(255, 255, 255, .02); }
.btn.ghost:hover { border-color: var(--accent-2); color: var(--accent-2); }
.btn.big { font-size: 1.05rem; padding: 15px 30px; }

/* ── cards ────────────────────────────────────────────────────────────── */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 16px; margin: 22px 0 44px; }
.card {
  background: linear-gradient(180deg, var(--card-2), var(--card));
  border: 1px solid var(--border); border-radius: var(--radius); padding: 20px;
  transition: transform .12s ease, border-color .12s ease;
}
.card:hover { transform: translateY(-2px); border-color: #3a4d6e; }
.card h3 { margin-top: 0; color: var(--accent-2); font-size: 1.05rem; }
.card a { color: var(--accent-2); text-decoration: none; }
.card a:hover { text-decoration: underline; }

h2.page { font-size: 1.4rem; margin: 40px 0 6px; }
h1.page { padding-top: 32px; font-size: clamp(1.7rem, 3.4vw, 2.3rem); }
main { padding-bottom: 40px; }

details {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 10px; padding: 12px 16px; margin: 10px 0;
}
details summary { cursor: pointer; font-weight: 600; }
code { background: var(--bg-soft); padding: 2px 6px; border-radius: 5px; font-size: .9em; overflow-wrap: anywhere; }
img { max-width: 100%; }

/* ── pricing ──────────────────────────────────────────────────────────── */
table.plan {
  width: 100%; border-collapse: collapse; margin: 16px 0 32px;
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; font-size: .93rem;
}
table.plan th, table.plan td { padding: 13px 15px; border-top: 1px solid var(--border); text-align: left; vertical-align: top; }
table.plan tr:first-child th { border-top: none; background: var(--bg-soft); color: var(--accent-2); }
table.plan tbody tr:hover, table.plan tr:hover { background: rgba(255, 255, 255, .02); }
.price { font-size: 1.25rem; font-weight: 700; color: var(--accent-2); }
.muted { color: var(--muted); font-size: .88rem; }

.disclaimer {
  border-left: 4px solid var(--accent); background: var(--card);
  padding: 14px 18px; margin: 24px 0; border-radius: 0 10px 10px 0;
  color: var(--muted); font-size: .92rem;
}
footer.site { border-top: 1px solid var(--border); color: var(--muted); padding: 20px 0 34px; font-size: .86rem; }
footer.site .wrap { display: flex; gap: 18px; flex-wrap: wrap; align-items: center; }
footer.site a { color: var(--muted); }
footer.site a:hover { color: var(--fg); }

/* ── forms (feedback page) ────────────────────────────────────────────── */
.fb { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; margin: 18px 0; }
.fb label { display: block; margin: 12px 0 6px; font-weight: 600; font-size: .92rem; }
.fb input[type=text], .fb select, .fb textarea {
  width: 100%; padding: 11px 12px; border-radius: 9px; border: 1px solid var(--border);
  background: var(--bg); color: var(--fg); font: inherit; font-size: .95rem;
}
.fb textarea { min-height: 170px; resize: vertical; }
.fb input[type=text]:focus, .fb select:focus, .fb textarea:focus { outline: 2px solid var(--accent-2); outline-offset: 1px; }
.fb .hint { font-weight: 400; color: var(--muted); font-size: .84rem; }
.feedback-intro { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 20px; margin: 16px 0; }

/* ── mobile ───────────────────────────────────────────────────────────── */
@media (max-width: 860px) {
  .hero-flex { grid-template-columns: 1fr; gap: 28px; }
  .hero { padding: 32px 0 16px; }
  .hero .tagline, .hero .tagline-zh { max-width: none; }
  .hero-art { order: -1; }            /* product shot first on phones */
  header.site .wrap { padding: 10px 16px; gap: 10px; flex-wrap: nowrap; }
  header.site .brand { font-size: 1rem; }
  nav { gap: 13px; }
  nav a { font-size: .86rem; }
  .grid { grid-template-columns: 1fr; }
  .btn.big { font-size: 1rem; padding: 14px 22px; }
}
@media (max-width: 520px) {
  header.site img { height: 28px; width: 28px; }
  header.site .brand { display: none; }   /* keep the nav on one line */
  /* the long CTA label must be allowed to wrap on small phones, */
  /* otherwise nowrap pushes it past the viewport edge            */
  .btn { white-space: normal; text-align: center; }
  .btn.big { font-size: .95rem; padding: 13px 18px; }
  .cta-row { display: block; }
  .cta-row .btn { display: block; width: 100%; margin-bottom: 10px; }
}