.hero { padding: 54px 0 30px; background: radial-gradient(circle at 85% -10%, rgba(56, 189, 248, 0.16), transparent 55%), radial-gradient(circle at 0% 100%, rgba(245, 165, 36, 0.10), transparent 50%); }
.hgrid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: 44px; align-items: center; }
.kicker { color: var(--brand); font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; font-size: 13px; margin-bottom: 10px; }
.hero h1 { font-size: 44px; letter-spacing: -0.015em; margin-bottom: 16px; }
.hero .lead { font-size: 18px; color: var(--muted); max-width: 600px; }
.cta { margin: 22px 0 12px; }
.cta .btn { padding: 11px 18px; font-size: 15px; }
.preview { margin: 0; padding: 10px; }
.preview-chart { height: 340px; border-radius: 8px; overflow: hidden; }
.preview figcaption { margin-top: 8px; padding: 0 4px; }
section { padding: 46px 0 6px; }
section > h2, .split h2 { font-size: 28px; margin-bottom: 18px; }
.feat { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.feat h3 { font-size: 17px; margin: 10px 0 6px; }
.feat p { color: var(--muted); margin: 0; }
.icon.big { width: 28px; height: 28px; color: var(--brand); }
.split { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 30px; align-items: start; }
.facts { list-style: none; padding: 0; margin: 10px 0 0; line-height: 2.1; }
.facts b { color: var(--brand); }
.faq details { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 12px 16px; margin-bottom: 8px; }
.faq summary { cursor: pointer; font-weight: 650; }
.faq details p { margin: 10px 0 0; color: var(--muted); }
@media (max-width: 960px) {
  .hgrid, .split { grid-template-columns: minmax(0, 1fr); }
  .feat { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero h1 { font-size: 36px; }
}
@media (max-width: 640px) {
  .feat { grid-template-columns: minmax(0, 1fr); }
  .hero { padding-top: 30px; }
  .hero h1 { font-size: 30px; }
  .preview-chart { height: 260px; }
  .site-head nav a[href^="#"] { display: none; }
}