:root {
  --bg: #0d1620;
  --bg-soft: #131f2c;
  --card: #16232f;
  --line: #24333f;
  --text: #e8eef4;
  --muted: #9aa9b7;
  --accent: #ff8a3d;
  --accent-soft: rgba(255, 138, 61, 0.12);
  --link: #ffa869;
  --radius: 14px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- header / nav ---------- */
header.site {
  border-bottom: 1px solid var(--line);
  background: rgba(13, 22, 32, 0.92);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(8px);
}
header.site .wrap {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 62px;
  flex-wrap: wrap;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: .2px;
  text-decoration: none;
  color: var(--text);
  margin-right: auto;
}
.brand img { width: 30px; height: 30px; border-radius: 8px; }
nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: .94rem;
  font-weight: 600;
  margin-left: 18px;
}
nav a:hover, nav a[aria-current="page"] { color: var(--accent); }

/* ---------- hero ---------- */
.hero {
  padding: 64px 0 48px;
  text-align: center;
  background:
    radial-gradient(900px 380px at 50% -120px, rgba(255, 138, 61, .16), transparent 70%),
    var(--bg);
}
.hero img.appicon {
  width: 96px; height: 96px;
  border-radius: 22px;
  box-shadow: 0 12px 34px rgba(0, 0, 0, .5);
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 2.9rem);
  margin: 22px 0 8px;
  letter-spacing: -.5px;
}
.hero p.tagline {
  font-size: 1.12rem;
  color: var(--muted);
  max-width: 560px;
  margin: 0 auto 26px;
}
.badge {
  display: inline-block;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid rgba(255, 138, 61, .3);
  border-radius: 999px;
  padding: 5px 14px;
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .3px;
}

/* ---------- content ---------- */
main { padding: 8px 0 24px; }
h2 {
  font-size: 1.35rem;
  margin: 44px 0 12px;
  letter-spacing: -.2px;
}
h3 { font-size: 1.02rem; margin: 26px 0 6px; }
p { margin: 10px 0; }
a { color: var(--link); }
.muted { color: var(--muted); font-size: .92rem; }
strong { color: #fff; }

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
  margin: 26px 0 8px;
}
.feature {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 18px 20px;
}
.feature .ico { font-size: 1.5rem; }
.feature h3 { margin: 8px 0 4px; font-size: 1.03rem; }
.feature p { margin: 0; color: var(--muted); font-size: .94rem; }

.shots {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin: 24px 0;
}
.shots figure { margin: 0; }
.shots img {
  width: 100%;
  max-width: 100%;
  border-radius: 12px;
  border: 1px solid var(--line);
  display: block;
}
.shots figcaption {
  color: var(--muted);
  font-size: .85rem;
  text-align: center;
  margin-top: 8px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 22px;
  margin: 18px 0;
}
.card.accent { border-color: rgba(255, 138, 61, .35); background: var(--bg-soft); }

.btn {
  display: inline-block;
  background: var(--accent);
  color: #17222c;
  font-weight: 700;
  text-decoration: none;
  padding: 12px 22px;
  border-radius: 999px;
}
.btn:hover { filter: brightness(1.08); }
.btn.ghost {
  background: transparent;
  color: var(--accent);
  border: 1px solid rgba(255, 138, 61, .45);
}

.table-scroll { overflow-x: auto; margin: 14px 0; }
table { border-collapse: collapse; width: 100%; font-size: .92rem; min-width: 420px; }
th, td { border: 1px solid var(--line); padding: 9px 11px; text-align: left; vertical-align: top; }
th { background: var(--bg-soft); color: #fff; }

ul { padding-left: 20px; }
li { margin: 5px 0; }

details {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 16px;
  margin: 10px 0;
  background: var(--card);
}
details summary {
  cursor: pointer;
  font-weight: 650;
  list-style: none;
}
details summary::-webkit-details-marker { display: none; }
details summary::before { content: "＋ "; color: var(--accent); font-weight: 700; }
details[open] summary::before { content: "－ "; }
details p:last-child { margin-bottom: 4px; }

hr { border: none; border-top: 1px solid var(--line); margin: 46px 0; }

footer.site {
  border-top: 1px solid var(--line);
  margin-top: 48px;
  padding: 26px 0 40px;
  color: var(--muted);
  font-size: .88rem;
}
footer.site a { color: var(--muted); margin-right: 16px; }
footer.site a:hover { color: var(--accent); }

@media (prefers-color-scheme: light) {
  :root {
    --bg: #ffffff;
    --bg-soft: #f4f7fa;
    --card: #ffffff;
    --line: #e2e8ef;
    --text: #16222e;
    --muted: #5d6b7a;
    --accent: #e0611a;
    --accent-soft: rgba(224, 97, 26, 0.09);
    --link: #c9530f;
  }
  header.site { background: rgba(255, 255, 255, .92); }
  .hero { background: radial-gradient(900px 380px at 50% -120px, rgba(224, 97, 26, .10), transparent 70%), var(--bg); }
  .hero img.appicon { box-shadow: 0 10px 26px rgba(20, 34, 48, .16); }
  strong { color: #0d1620; }
  .btn { color: #fff; }
}