/* Set 5 web — dark tools site, fixed top download bar */
:root {
  --bg: #12161c;
  --panel: #1a2029;
  --ink: #e8edf2;
  --muted: #9aa8b6;
  --line: #2a3340;
  --brand: #3d9cf0;
  --brand-deep: #1f78c7;
  --ok: #3ecf8e;
  --sans: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", sans-serif;
  --mono: Consolas, "Sarasa Mono SC", "Microsoft YaHei", monospace;
}

*,
*::before,
*::after { box-sizing: border-box; }
html { scroll-behavior: auto; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  padding-top: 56px;
}
img, svg { max-width: 100%; display: inline-block; vertical-align: middle; }
a { color: var(--brand); }
.dl-sticky {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 18px;
  background: #0d1117;
  border-bottom: 1px solid var(--line);
}
.dl-sticky strong { font-size: 14px; }
.dl-sticky .btn {
  padding: 8px 14px;
  font-size: 14px;
}
.site-header {
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}
.site-header__inner,
.wrap { width: min(1080px, calc(100% - 32px)); margin: 0 auto; }
.site-header__inner {
  min-height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
}
.brand svg { width: 26px; height: 26px; color: var(--brand); }
.site-nav { display: flex; gap: 10px; flex-wrap: wrap; }
.site-nav a {
  text-decoration: none;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 13px;
}
.site-nav a.is-active { color: var(--ok); }
.hero-tool { padding: 28px 0 8px; }
.hero-tool h1 { margin: 0 0 12px; font-size: 30px; line-height: 1.35; }
.hero-tool p { margin: 0 0 12px; color: var(--muted); }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--brand);
  color: #061018;
  text-decoration: none;
  padding: 10px 16px;
  border-radius: 4px;
  font-weight: 800;
}
.btn:hover { background: #68b4f6; }
.btn-ghost {
  display: inline-flex;
  align-items: center;
  color: var(--ink);
  border: 1px solid var(--line);
  text-decoration: none;
  padding: 9px 14px;
  border-radius: 4px;
  font-weight: 700;
}
section { padding: 18px 0; }
section h2 { margin: 0 0 12px; font-size: 21px; }
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  margin: 0 0 12px;
}
.cols-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
table.tool-table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.tool-table th, .tool-table td {
  border-bottom: 1px solid var(--line);
  padding: 10px 8px;
  text-align: left;
  vertical-align: top;
}
.tool-table th { color: var(--muted); font-weight: 600; }
.faq-item { border-bottom: 1px solid var(--line); padding: 12px 0; }
.faq-item h3 { margin: 0 0 8px; font-size: 16px; }
.site-footer {
  border-top: 1px solid var(--line);
  padding: 18px 0 28px;
  color: var(--muted);
  font-size: 13px;
}
.site-footer p { margin: 0 0 8px; }
@media (max-width: 800px) {
  .cols-2 { grid-template-columns: 1fr; }
  .dl-sticky strong { display: none; }
  .site-header__inner { flex-direction: column; padding: 10px 0; }
  body { padding-top: 52px; }
}