:root {
  --bg: #f8fafc;
  --surface: #ffffff;
  --surface-soft: #f1f5f9;
  --text: #0f172a;
  --muted: #475569;
  --line: #dbe2ea;
  --accent: #0f172a;
  --accent-2: #e2e8f0;
  --dark: #0b1220;
  --dark-surface: #111827;
  --max: 1120px;
  --radius: 18px;
  --shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }
p { margin: 0 0 1rem; }
h1, h2, h3 { margin: 0 0 1rem; line-height: 1.15; }
ul { padding-left: 1.15rem; margin: 0; }
li { margin-bottom: 0.5rem; }

.container {
  width: min(calc(100% - 2rem), var(--max));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(10px);
  background: rgba(248, 250, 252, 0.88);
  border-bottom: 1px solid rgba(219, 226, 234, 0.8);
  z-index: 20;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 1rem;
}

.brand {
  font-weight: 800;
  letter-spacing: 0.08em;
}

nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

nav a {
  color: var(--muted);
  font-size: 0.95rem;
}

.hero {
  padding: 5rem 0 4rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 2rem;
  align-items: start;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  font-weight: 700;
  color: #334155;
  margin-bottom: 0.75rem;
}

.eyebrow-light { color: #cbd5e1; }

h1 {
  font-size: clamp(2.5rem, 4vw, 4.5rem);
  max-width: 12ch;
}

h2 {
  font-size: clamp(1.8rem, 3vw, 3rem);
  max-width: 20ch;
}

h3 {
  font-size: 1.25rem;
}

.lead {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 62ch;
}

.lead-light { color: #cbd5e1; }

.microcopy {
  color: var(--muted);
  font-size: 0.95rem;
}

.signal-card,
.card,
.contact-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.4rem;
  box-shadow: var(--shadow);
}

.signal-label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 700;
  color: #475569;
  margin-bottom: 0.75rem;
}

.signal-note {
  margin-top: 1.25rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.9rem 1.2rem;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  border: 1px solid var(--accent);
}

.button-secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--line);
}

.button-small {
  padding: 0.6rem 0.9rem;
}

.cta-row {
  display: flex;
  gap: 0.85rem;
  flex-wrap: wrap;
  margin: 1.5rem 0 0.85rem;
}

.section {
  padding: 4rem 0;
}

.section-soft {
  background: var(--surface-soft);
}

.section-dark {
  background: var(--dark);
  color: #fff;
}

.section-head {
  margin-bottom: 2rem;
}

.section-head.narrow h2,
.narrow { max-width: 22ch; }

.cards {
  display: grid;
  gap: 1.2rem;
}

.three-up {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card-intro {
  color: var(--muted);
}

.text-link {
  display: inline-block;
  margin-top: 1rem;
  font-weight: 700;
}

.why-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.why-block {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.3rem;
}

.quote-block {
  text-align: center;
}

.quote {
  font-size: clamp(1.4rem, 2.8vw, 2rem);
  max-width: 36ch;
  margin: 0 auto 0.75rem;
}

.quote-note { color: var(--muted); }

.faq-list {
  display: grid;
  gap: 0.9rem;
}

details {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem 1.1rem;
}

summary {
  cursor: pointer;
  font-weight: 700;
}

summary + p {
  margin-top: 0.75rem;
  color: var(--muted);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 1.5rem;
  align-items: center;
}

.contact-card {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.12);
  box-shadow: none;
}

.contact-card a { color: #fff; }
.contact-note { color: #cbd5e1; }

.site-footer {
  padding: 1.25rem 0 2rem;
}

.footer-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 0.92rem;
}

@media (max-width: 900px) {
  .hero-grid,
  .three-up,
  .why-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  h1 { max-width: none; }
}

@media (max-width: 640px) {
  .nav { align-items: flex-start; padding: 0.75rem 0; }
  nav { gap: 0.75rem; }
  .hero { padding-top: 3.5rem; }
}



.inline-tags {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: var(--accent-2);
  color: var(--text);
  font-size: 0.83rem;
  font-weight: 700;
}

.two-up {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.three-up {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.single-col {
  grid-template-columns: 1fr;
}

.hero-tight {
  padding: 4rem 0 3rem;
}

.card-alert {
  border-color: #cbd5e1;
  background: #fcfdff;
}

.sample-visual-wrap {
  max-width: 1120px;
  margin: 0 auto 1.25rem;
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem;
}

.sample-visual {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 14px;
}

.sample-notes {
  margin-top: 1.25rem;
}

.timeline-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.timeline-card {
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.2rem;
  box-shadow: var(--shadow);
}

.timeline-step {
  display: inline-flex;
  width: 2rem;
  height: 2rem;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: var(--text);
  color: white;
  font-size: 0.8rem;
  font-weight: 800;
  margin-bottom: 0.8rem;
}

.contact-note {
  color: #cbd5e1;
  font-size: 0.95rem;
}

@media (max-width: 1000px) {
  .timeline-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .two-up,
  .three-up,
  .timeline-grid {
    grid-template-columns: 1fr;
  }
}


.cta-center{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap;margin-top:2rem}
.card-alert{border-color:#cbd5e1;background:#f8fafc}
@media (max-width: 700px){
  .cta-center{justify-content:flex-start}
}


.nav-compact { min-height: 64px; }
.hero-minimal { padding: 4rem 0 3rem; }
.hero-grid-minimal { grid-template-columns: 1.35fr 0.9fr; align-items: center; }
.compact-head { margin-bottom: 1.25rem; }
.compact-head h2 { max-width: none; }
.compact-card p { margin-bottom: 0; color: var(--muted); }
.system-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
}
.mini-stack { display: grid; gap: 0.75rem; }
.mini-row { display: flex; gap: 0.6rem; flex-wrap: wrap; }
.mini-node {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0.7rem 0.85rem;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: 12px;
  font-weight: 700;
  font-size: 0.95rem;
}
.mini-arrow {
  color: var(--muted);
  font-weight: 700;
  text-align: center;
}
@media (max-width: 900px) {
  .hero-grid-minimal, .hero-grid, .three-up, .two-up, .timeline-grid, .why-grid {
    grid-template-columns: 1fr;
  }
  nav {
    gap: 0.75rem;
  }
}