/* Set 2 — www: dark masthead, three-column teal tiles */
:root {
  --bg: #f3faf8;
  --ink: #10232b;
  --soft: #3d5a63;
  --mast: #0f172a;
  --teal: #0f766e;
  --mint: #14b8a6;
  --card: #ffffff;
  --line: #cde5e1;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: "Helvetica Neue", Arial, "Noto Sans SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
}
a { color: var(--teal); }
.mast {
  background: var(--mast);
  color: #e2e8f0;
  position: sticky;
  top: 0;
  z-index: 8;
}
.mast-bar {
  max-width: 1180px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.brand {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  display: flex;
  gap: 10px;
  align-items: center;
}
.brand svg { width: 28px; height: 28px; }
.mast nav ul { display: flex; gap: 6px; list-style: none; }
.mast nav a {
  color: #cbd5e1;
  text-decoration: none;
  padding: 7px 12px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
}
.mast nav a.is-on { background: var(--teal); color: #fff; }
.shell { max-width: 1180px; margin: 0 auto; padding: 0 24px 56px; }
.mast-hero {
  background: linear-gradient(120deg, #0f172a 0%, #134e4a 100%);
  color: #f8fafc;
  padding: 48px 24px 56px;
}
.mast-hero .inner { max-width: 1180px; margin: 0 auto; }
.mast-hero h1 { font-size: 34px; line-height: 1.3; max-width: 18em; margin: 10px 0 16px; }
.mast-hero p { max-width: 46em; color: #ccfbf1; margin-bottom: 22px; }
.cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--mint);
  color: #042f2e;
  font-weight: 800;
  padding: 13px 22px;
  text-decoration: none;
  border-radius: 6px;
}
.cta-line { display: flex; flex-wrap: wrap; gap: 10px; }
.ghost {
  background: transparent;
  color: #fff;
  border: 1px solid #5eead4;
}
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin: -28px 0 28px;
}
.stat {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 16px;
  text-align: center;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.06);
}
.stat b { display: block; color: var(--teal); font-size: 20px; }
.tile-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.tile {
  background: var(--card);
  border-top: 5px solid var(--mint);
  padding: 20px;
  box-shadow: 0 1px 0 var(--line);
}
.tile h3 { margin: 8px 0; }
.tile svg { width: 26px; height: 26px; color: var(--teal); }
.section { margin: 36px 0; }
.section h2 { font-size: 24px; color: var(--teal); margin-bottom: 12px; }
.panel {
  background: var(--card);
  padding: 24px 26px;
  border: 1px solid var(--line);
}
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 9px 10px; border-bottom: 1px solid var(--line); text-align: left; }
th { color: var(--teal); }
.faq-item { padding: 12px 0; border-bottom: 1px solid var(--line); }
.faq-item dt { font-weight: 700; }
.faq-item dd { color: var(--soft); margin-top: 6px; }
.foot {
  background: #020617;
  color: #94a3b8;
  padding: 32px 24px 40px;
  font-size: 14px;
}
.foot .inner { max-width: 1180px; margin: 0 auto; }
.foot p { margin-bottom: 8px; }
@media (max-width: 900px) {
  .tile-row, .stats, .two { grid-template-columns: 1fr; }
}