/* FlowSignal production website */
:root {
  --teal-950:#04272b;
  --teal-900:#063c42;
  --teal-800:#0a4f55;
  --teal-700:#0f766e;
  --teal-500:#14b8a6;
  --teal-100:#e8fbf8;
  --ink:#07343a;
  --muted:#587579;
  --line:#d8eeee;
  --white:#ffffff;
  --page:#f7fcfb;
  --shadow:0 20px 70px rgba(4,39,43,.10);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--ink);
  background: #fff;
  line-height: 1.5;
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 920px; }
.center { text-align: center; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(15,118,110,.14);
}
.nav {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  font-size: 31px;
  font-weight: 950;
  letter-spacing: -.075em;
  color: var(--teal-900);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  color: rgba(6,60,66,.78);
  font-size: 14px;
  font-weight: 760;
}
.nav-links a:not(.nav-cta) { position: relative; }
.nav-links a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -8px;
  height: 2px;
  background: var(--teal-500);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .18s ease;
}
.nav-links a:not(.nav-cta):hover::after { transform: scaleX(1); }

.nav-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 20px;
  border-radius: 14px;
  font-size: 15px;
  font-weight: 850;
  background: linear-gradient(135deg,var(--teal-700),var(--teal-500));
  color: #fff;
  box-shadow: 0 14px 30px rgba(20,184,166,.22);
  transition: transform .18s ease, box-shadow .18s ease;
}
.nav-cta:hover,
.button:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 38px rgba(20,184,166,.30);
}
.button.secondary {
  background: rgba(255,255,255,.10);
  border: 1px solid rgba(255,255,255,.25);
  box-shadow: none;
}
.menu-toggle { display: none; }

.hero {
  background:
    radial-gradient(circle at 74% 28%,rgba(20,184,166,.22),transparent 34%),
    linear-gradient(135deg,var(--teal-950),var(--teal-900) 58%,var(--teal-800));
  color: white;
  overflow: hidden;
}
.hero-grid {
  padding-top: 98px;
  padding-bottom: 96px;
  display: grid;
  grid-template-columns: 1.03fr .97fr;
  gap: 58px;
  align-items: center;
}
.eyebrow,
.section-kicker {
  margin: 0 0 18px;
  color: var(--teal-500);
  text-transform: uppercase;
  letter-spacing: .16em;
  font-size: 13px;
  font-weight: 850;
}
.section-kicker.light { color: #90efe4; }
.hero h1,
.final-cta h2 {
  margin: 0 0 28px;
  font-size: clamp(50px,7vw,88px);
  line-height: .94;
  letter-spacing: -.08em;
}
.hero p {
  margin: 0 0 16px;
  max-width: 650px;
  color: rgba(255,255,255,.86);
  font-size: 20px;
}
.hero-lead { font-size: 22px !important; color: white !important; }
.hero p strong { color: white; }
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}
.hero-visual {
  padding: 14px;
  border: 1px solid rgba(159,243,234,.24);
  border-radius: 34px;
  background: rgba(255,255,255,.08);
  box-shadow: 0 34px 90px rgba(0,0,0,.24);
}
.hero-visual img {
  display: block;
  border-radius: 24px;
  width: 100%;
}

.section { padding: 96px 0; }
.section.compact { padding: 84px 0; }
.section-white { background: #fff; }
.muted { background: var(--page); }
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 58px;
  align-items: center;
}
h2 {
  margin: 0 0 18px;
  color: var(--teal-950);
  font-size: clamp(38px,4vw,58px);
  line-height: 1.02;
  letter-spacing: -.06em;
}
.lead {
  max-width: 780px;
  margin: 0 auto 46px;
  color: var(--muted);
  font-size: 20px;
}
.lead.left { margin-left: 0; }
.strong { font-weight: 850; }

.timeline {
  border-left: 3px solid var(--teal-500);
  padding-left: 28px;
}
.timeline div {
  margin: 20px 0;
  padding: 18px 22px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
  box-shadow: var(--shadow);
  font-weight: 800;
}
.timeline span {
  display:inline-flex;
  width:34px;
  height:34px;
  align-items:center;
  justify-content:center;
  margin-right:10px;
  border-radius:50%;
  background:var(--teal-100);
  color:var(--teal-700);
  font-size:12px;
  font-weight:950;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 18px;
  margin-top: 36px;
}
.cards.three { grid-template-columns: repeat(3,1fr); }
.card {
  min-height: 235px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: #fff;
  box-shadow: 0 18px 50px rgba(4,39,43,.07);
}
.icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  border-radius: 16px;
  background: var(--teal-100);
  font-size: 24px;
}
.card h3 { margin: 0 0 10px; font-size: 20px; }
.card p { margin: 0; color: var(--muted); }
.question {
  margin-top: 18px !important;
  color: var(--teal-700) !important;
  font-weight: 900;
}

.dark-section {
  background: linear-gradient(135deg,var(--teal-950),var(--teal-900));
  color: white;
}
.dark-section h2 { color: white; }
.light-text { color: rgba(255,255,255,.78); }
.pill-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin: 38px 0;
}
.pill-row span {
  padding: 12px 18px;
  border-radius: 999px;
  border: 1px solid rgba(159,243,234,.22);
  background: rgba(255,255,255,.09);
  font-weight: 800;
}
.question-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  margin-top: 36px;
}
.question-box {
  padding: 34px;
  border: 1px solid rgba(159,243,234,.22);
  border-radius: 26px;
  background: rgba(255,255,255,.08);
}
.question-box p {
  margin: 0 0 12px;
  color: #90efe4;
  text-transform: uppercase;
  letter-spacing: .14em;
  font-size: 12px;
  font-weight: 850;
}
.question-box h3 {
  margin: 0;
  font-size: 28px;
  letter-spacing: -.04em;
}
.question-box.accent { background: rgba(20,184,166,.14); }

.gateway-section {
  background: linear-gradient(180deg,#fff,#f6fbfb);
}
.gateway-frame {
  margin: 34px auto 0;
  max-width: 1080px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 34px;
  background: #fff;
  box-shadow: 0 25px 80px rgba(4,39,43,.12);
}
.gateway-frame img {
  display: block;
  width: 100%;
  border-radius: 24px;
}

.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  margin-top: 38px;
}
.compare-card {
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: #fff;
  box-shadow: 0 18px 50px rgba(4,39,43,.06);
  text-align: left;
}
.compare-card.highlight { border-color: rgba(20,184,166,.35); }
.compare-card h3 { margin: 0 0 14px; font-size: 22px; }
.compare-card ul { margin: 0; padding-left: 20px; color: var(--muted); }
.compare-card li { margin: 9px 0; }

.final-cta {
  padding: 104px 0;
  text-align: center;
  color: white;
  background:
    radial-gradient(circle at 50% 0%,rgba(20,184,166,.22),transparent 36%),
    linear-gradient(135deg,var(--teal-950),var(--teal-900));
}
.final-cta p {
  max-width: 720px;
  margin: 0 auto 32px;
  color: rgba(255,255,255,.8);
  font-size: 20px;
}
.strapline strong { color: white; }

.footer {
  padding: 30px 0;
  background: #031f23;
  color: rgba(255,255,255,.75);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  font-size: 14px;
}
.footer p { margin: 0; }

@media (max-width: 900px) {
  .menu-toggle {
    display: inline-flex;
    border: 0;
    background: transparent;
    color: var(--teal-900);
    font-weight: 800;
    font-size: 15px;
  }
  .nav-links { display: none; }
  .nav-links.open {
    position: absolute;
    top: 76px;
    left: 0; right: 0;
    display: grid;
    gap: 16px;
    padding: 20px 24px 24px;
    background: white;
    border-bottom: 1px solid var(--line);
  }
  .hero-grid,
  .split,
  .question-grid,
  .compare-grid {
    grid-template-columns: 1fr;
  }
  .cards,
  .cards.three {
    grid-template-columns: 1fr;
  }
  .hero-grid { padding-top: 64px; }
  .hero h1 { font-size: clamp(46px,14vw,68px); }
  .footer-inner { display: block; }
  .footer p + p { margin-top: 10px; }
}