:root {
  color-scheme: dark;
  --bg: #020617;
  --bg-soft: #0b1120;
  --fg: #e5e7eb;
  --accent: #6366f1;
  --accent-soft: rgba(99,102,241,0.25);
  --border-soft: rgba(148,163,184,0.4);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top, #1f2937 0, #020617 55%, #000 100%);
  color: var(--fg);
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(2,6,23,0.92);
  border-bottom: 1px solid var(--border-soft);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 26px;
}
.logo {
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.logo-main {
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  font-size: 0.9rem;
  color: #a5b4fc;
}
.logo-sub {
  font-size: 0.75rem;
  color: #9ca3af;
}
nav {
  display: flex;
  gap: 16px;
  font-size: 0.85rem;
  color: #9ca3af;
}
nav a {
  padding: 4px 10px;
  border-radius: 9999px;
  border: 1px solid transparent;
}
nav a:hover {
  border-color: var(--border-soft);
  color: var(--fg);
}
main {
  max-width: 1120px;
  margin: 0 auto;
  padding: 26px 18px 40px;
}
/* HERO */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2.5fr);
  gap: 28px;
  align-items: center;
  padding: 32px 0 18px;
}
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
}
.hero-title {
  font-size: clamp(1.9rem, 3vw, 2.4rem);
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: #c7d2fe;
  margin-bottom: 10px;
}
.hero-sub {
  font-size: 0.98rem;
  color: #9ca3af;
  max-width: 36rem;
  line-height: 1.5;
}
.hero-highlight {
  color: #e5e7eb;
  font-weight: 500;
}
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0 20px;
}
.tag {
  font-size: 0.72rem;
  border-radius: 9999px;
  border: 1px solid var(--border-soft);
  padding: 4px 10px;
  background: radial-gradient(circle at top left, rgba(148,163,248,0.15), rgba(15,23,42,0.9));
  color: #cbd5f5;
  white-space: nowrap;
}
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.btn {
  border-radius: 9999px;
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-primary {
  background: radial-gradient(circle at top left, #4f46e5, #6366f1);
  border-color: transparent;
  color: #e5e7eb;
}
.btn-primary:hover { filter: brightness(1.05); }
.btn-ghost {
  background: rgba(15,23,42,0.7);
  border-color: var(--border-soft);
  color: #cbd5f5;
}
.btn-ghost:hover {
  border-color: #818cf8;
  color: #e5e7eb;
}
.btn span.icon {
  font-size: 1rem;
  opacity: .9;
}
.hero-card {
  background: radial-gradient(circle at top left, rgba(56,189,248,0.18), rgba(15,23,42,0.98));
  border-radius: 20px;
  padding: 14px 16px 14px;
  border: 1px solid var(--border-soft);
  box-shadow: 0 28px 60px rgba(15,23,42,0.9);
  font-size: 0.82rem;
}
.hero-card h2 {
  margin: 0 0 6px;
  font-size: 0.9rem;
  color: #e5e7eb;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.hero-pill {
  font-size: 0.7rem;
  border-radius: 9999px;
  padding: 2px 8px;
  border: 1px solid rgba(52,211,153,0.7);
  background: radial-gradient(circle at top left, rgba(45,212,191,0.15), transparent 60%);
  color: #a7f3d0;
  white-space: nowrap;
}
.hero-list {
  list-style: none;
  padding: 0;
  margin: 10px 0 0;
  color: #9ca3af;
}
.hero-list li {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  margin-bottom: 6px;
}
.hero-list li span.bullet {
  width: 6px;
  height: 6px;
  border-radius: 9999px;
  background: #22c55e;
  margin-top: 5px;
  flex-shrink: 0;
}
/* SECTIONS */
section {
  margin-top: 32px;
}
.section-title {
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: .18em;
  color: #9ca3af;
  margin-bottom: 12px;
}
.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 14px;
}
@media (max-width: 900px) {
  .grid { grid-template-columns: 1fr; }
}
.card {
  background: radial-gradient(circle at top left, rgba(148,163,248,0.18), rgba(15,23,42,0.97));
  border-radius: 18px;
  border: 1px solid var(--border-soft);
  padding: 12px 14px 12px;
  font-size: 0.84rem;
  box-shadow: 0 18px 40px rgba(15,23,42,0.85);
}
.card h3 {
  margin: 0 0 6px;
  font-size: 0.9rem;
  color: #e5e7eb;
}
.card small {
  color: #9ca3af;
  font-size: 0.75rem;
}
.card ul {
  margin: 8px 0 0;
  padding-left: 16px;
  color: #9ca3af;
}
.card ul li {
  margin-bottom: 4px;
}
.two-cols {
  display: grid;
  grid-template-columns: minmax(0,1.4fr) minmax(0,1.6fr);
  gap: 18px;
  align-items: flex-start;
}
@media (max-width: 900px) {
  .two-cols { grid-template-columns: 1fr; }
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 9999px;
  border: 1px solid var(--border-soft);
  padding: 3px 9px;
  font-size: 0.72rem;
  color: #9ca3af;
  background: rgba(15,23,42,0.9);
}
.badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 9999px;
  background: #22c55e;
}
.steps {
  list-style: none;
  padding: 0;
  margin: 8px 0 0;
  font-size: 0.82rem;
  color: #9ca3af;
}
.steps li {
  margin-bottom: 6px;
}
.steps strong {
  color: #e5e7eb;
  font-weight: 500;
}
.ecg-card {
  background: radial-gradient(circle at top left, rgba(56,189,248,0.18), rgba(15,23,42,0.98));
  border-radius: 18px;
  border: 1px solid var(--border-soft);
  padding: 12px 14px 12px;
  font-size: 0.82rem;
  box-shadow: 0 20px 50px rgba(15,23,42,0.9);
}
.ecg-card h3 {
  margin: 0 0 6px;
  font-size: 0.9rem;
  color: #e5e7eb;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}
.pill-link {
  font-size: 0.75rem;
  border-radius: 9999px;
  padding: 3px 9px;
  border: 1px solid rgba(129,140,248,0.8);
  color: #c7d2fe;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.pill-link:hover {
  background: rgba(30,64,175,0.6);
}
footer {
  border-top: 1px solid var(--border-soft);
  padding: 12px 26px 18px;
  font-size: 0.78rem;
  color: #9ca3af;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: space-between;
  align-items: center;
}
.footer-contact {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}
.footer-contact a {
  border-radius: 9999px;
  padding: 3px 9px;
  border: 1px solid var(--border-soft);
}
.footer-contact a:hover {
  border-color: #818cf8;
  color: #e5e7eb;
}