* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: #f4f4f5;
  color: #18181b;
  line-height: 1.7;
}

.dark-hero {
  background: #171717;
  color: #fafafa;
  padding: 20px 0 36px;
}
.dark-hero .row {
  width: min(1120px, calc(100% - 28px));
  margin: 0 auto;
}
.nav-app {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
}
.brand {
  color: #2dd4bf;
  text-decoration: none;
  font-size: 24px;
  font-weight: 800;
}
.nav-app nav a {
  color: #d4d4d8;
  text-decoration: none;
  margin-left: 16px;
  font-size: 14px;
}
.nav-app nav a.is-current { color: #2dd4bf; }

.dark-hero h1 { font-size: 30px; line-height: 1.35; margin: 0 0 12px; }
.dark-hero p { color: #d4d4d8; margin: 0 0 10px; }

.pickers {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-top: 20px;
}
.pickers a {
  background: #262626;
  color: #fafafa;
  text-decoration: none;
  padding: 14px 10px;
  text-align: center;
  border-radius: 14px;
  font-size: 13px;
  border: 1px solid #3f3f46;
}
.pickers a.win { background: #0d9488; border-color: #0d9488; color: #042f2e; }

.sheet {
  width: min(1120px, calc(100% - 28px));
  margin: -18px auto 20px;
  background: #fff;
  border-radius: 18px;
  padding: 22px 24px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.06);
}
.sheet h2 { margin: 0 0 12px; font-size: 20px; }
.sheet p { margin: 0 0 10px; }

.matrix {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin: 8px 0 12px;
}
.matrix th, .matrix td { border-bottom: 1px solid #e4e4e7; padding: 10px 8px; text-align: left; }
.matrix th { color: #0f766e; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  background: #0d9488;
  color: #042f2e;
  padding: 10px 14px;
  border-radius: 10px;
  font-weight: 600;
  margin: 4px 6px 0 0;
}
.btn-dark { background: #171717; color: #fafafa; }

.faq-app { width: min(1120px, calc(100% - 28px)); margin: 0 auto 28px; }
.faq-app h2 { font-size: 20px; }
.faq-app dt {
  background: #fff;
  border-radius: 12px 12px 0 0;
  padding: 10px 14px;
  margin-top: 10px;
  font-weight: 700;
}
.faq-app dd {
  margin: 0;
  background: #ecfdf5;
  border-radius: 0 0 12px 12px;
  padding: 10px 14px 12px;
}

.stick-cta {
  position: sticky;
  bottom: 0;
  background: #0d9488;
  color: #042f2e;
  padding: 10px 0;
}
.stick-cta .row {
  width: min(1120px, calc(100% - 28px));
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
}
.stick-cta a { color: #042f2e; font-weight: 700; }

.site-foot {
  background: #171717;
  color: #a1a1aa;
  font-size: 12px;
  padding: 26px 0 40px;
}
.site-foot .row { width: min(1120px, calc(100% - 28px)); margin: 0 auto; }
.site-foot a { color: #5eead4; }
.safe { color: #99f6e4; }

svg.icon { width: 15px; height: 15px; fill: currentColor; }

@media (max-width: 860px) {
  .pickers { grid-template-columns: 1fr 1fr; }
  .stick-cta .row { flex-direction: column; gap: 6px; }
}