:root {
  --bg: #f4f7fb;
  --bg-elevated: #ffffff;
  --ink: #132033;
  --muted: #5b6b7c;
  --line: #d7e0ea;
  --brand: #1f4fd8;
  --brand-soft: #e8effc;
  --accent: #0f8a6a;
  --warning: #8a5a00;
  --shadow: 0 18px 50px rgba(19, 32, 51, 0.08);
  --radius: 18px;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, #dfe9ff 0%, transparent 55%),
    radial-gradient(900px 420px at 100% 0%, #d9f3ea 0%, transparent 45%),
    var(--bg);
  line-height: 1.55;
}

a { color: var(--brand); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: #163db0; }

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--ink);
  color: #fff;
  padding: 0.6rem 1rem;
  z-index: 100;
}
.skip-link:focus { left: 1rem; top: 1rem; }

.wrap {
  width: min(1120px, calc(100% - 2rem));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(12px);
  background: rgba(244, 247, 251, 0.86);
  border-bottom: 1px solid rgba(215, 224, 234, 0.8);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: 68px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: inherit;
  text-decoration: none;
  font-weight: 700;
}
.brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background:
    linear-gradient(145deg, #2f6fed, #0f8a6a);
  box-shadow: inset 0 0 0 2px rgba(255,255,255,0.25);
}
.brand-name { letter-spacing: -0.02em; }
.nav {
  display: flex;
  gap: 1rem;
  margin-left: 1rem;
}
.nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
}
.nav a:hover { color: var(--ink); }
.status-pill {
  margin-left: auto;
  background: var(--brand-soft);
  color: var(--brand);
  border: 1px solid #c9d8f8;
  border-radius: 999px;
  padding: 0.35rem 0.8rem;
  font-size: 0.85rem;
  font-weight: 600;
}

.hero {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2rem;
  padding: 3.5rem 0 2.5rem;
  align-items: start;
}
.eyebrow {
  display: inline-block;
  margin: 0 0 0.75rem;
  color: var(--accent);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.78rem;
}
.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 4vw, 3.1rem);
  line-height: 1.12;
  letter-spacing: -0.03em;
}
.lede {
  margin: 0 0 1.4rem;
  color: var(--muted);
  font-size: 1.08rem;
  max-width: 38rem;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem 1.2rem;
  align-items: center;
  margin-bottom: 1rem;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.8rem 1.2rem;
  font-weight: 650;
}
.btn-disabled {
  background: #c9d2de;
  color: #516074;
  cursor: not-allowed;
}
.text-link {
  font-weight: 650;
  text-decoration: none;
}
.text-link:hover { text-decoration: underline; }
.fine-print {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  max-width: 36rem;
}

.hero-card {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 4px);
  box-shadow: var(--shadow);
  padding: 1.15rem 1.15rem 1.25rem;
}
.card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
}
.card-top h2 {
  margin: 0;
  font-size: 1.05rem;
}
.sample-tag {
  background: #fff6e8;
  color: var(--warning);
  border: 1px solid #f0d7a8;
  border-radius: 999px;
  padding: 0.25rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 700;
  white-space: nowrap;
}
.card-note {
  margin: 0.45rem 0 0.8rem;
  color: var(--muted);
  font-size: 0.88rem;
}
.chart-figure { margin: 0; }
.chart {
  width: 100%;
  height: auto;
  display: block;
  background: linear-gradient(180deg, #f8fbff, #ffffff);
  border: 1px solid var(--line);
  border-radius: 14px;
}
.chart .grid line {
  stroke: #e6edf5;
  stroke-width: 1;
}
.chart .line {
  fill: none;
  stroke: #2f6fed;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.chart .points circle {
  fill: #fff;
  stroke: #2f6fed;
  stroke-width: 2.5;
}
.chart .axis-label,
.chart .x-labels text {
  fill: #7a8898;
  font-size: 10px;
  font-family: var(--font);
}
.chart .x-labels text { text-anchor: middle; }
.chart-figure figcaption {
  margin-top: 0.55rem;
  color: var(--muted);
  font-size: 0.82rem;
}
.metric-row {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.6rem;
  margin: 1rem 0 0;
  padding: 0;
}
.metric-row li {
  background: #f7fafc;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.65rem 0.7rem;
}
.metric-row span {
  display: block;
  color: var(--muted);
  font-size: 0.75rem;
}
.metric-row strong {
  font-size: 0.92rem;
}

.features { padding: 1.5rem 0 2.5rem; }
.section-head {
  max-width: 42rem;
  margin-bottom: 1.4rem;
}
.section-head h2,
.roadmap-card h2,
.disclaimer h2,
.contact h2 {
  margin: 0 0 0.7rem;
  letter-spacing: -0.02em;
  font-size: clamp(1.45rem, 2.4vw, 1.9rem);
}
.section-head p { margin: 0; color: var(--muted); }
.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}
.feature {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.2rem 1.2rem 1.3rem;
}
.feature h3 {
  margin: 0 0 0.45rem;
  font-size: 1.05rem;
}
.feature p {
  margin: 0;
  color: var(--muted);
}

.roadmap { padding: 0 0 2.5rem; }
.roadmap-card {
  background: #102039;
  color: #eef3fb;
  border-radius: calc(var(--radius) + 2px);
  padding: 1.5rem 1.5rem 1.6rem;
  box-shadow: var(--shadow);
}
.roadmap-card ul {
  margin: 0 0 1rem;
  padding-left: 1.15rem;
}
.roadmap-card li { margin: 0.45rem 0; }
.roadmap-note {
  margin: 0;
  color: #b7c4d8;
  font-size: 0.95rem;
}

.disclaimer { padding: 0 0 1.5rem; }
.disclaimer-box {
  background: #fff8e8;
  border: 1px solid #efd7a4;
  border-radius: var(--radius);
  padding: 1.15rem 1.2rem;
}
.disclaimer-box p { margin: 0 0 0.8rem; }
.disclaimer-box p:last-child { margin-bottom: 0; }

.contact {
  padding: 0 0 3rem;
}
.contact p {
  margin: 0;
  color: var(--muted);
  max-width: 40rem;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: rgba(255,255,255,0.7);
  padding: 1.6rem 0 2rem;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: end;
}
.site-footer p {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}
.copyright { font-size: 0.85rem !important; }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding-top: 2.2rem; }
  .nav { display: none; }
  .feature-grid { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .metric-row { grid-template-columns: 1fr; }
  .header-inner { min-height: 60px; }
}