:root {
  --ink: #0e1a2b;
  --ink-2: #152338;
  --fog: #f4f7fb;
  --mist: #d7e2ee;
  --mute: #5a6b7d;
  --signal: #00b39a;
  --signal-deep: #008f7a;
  --alert: #e85d4c;
  --paper: #f7fafc;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --font-display: "Outfit", system-ui, sans-serif;
  --font-body: "Source Serif 4", Georgia, serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(0, 179, 154, 0.18), transparent 55%),
    radial-gradient(900px 500px at -10% 20%, rgba(21, 35, 56, 0.08), transparent 50%),
    linear-gradient(180deg, var(--fog) 0%, var(--paper) 45%, #e9f0f6 100%);
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.6;
  overflow-x: hidden;
}

.noise {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 0;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.top,
main,
.foot {
  position: relative;
  z-index: 1;
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1120px;
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--ink);
}

.brand-mark {
  width: 0.85rem;
  height: 0.85rem;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #7dffe8, var(--signal) 45%, var(--signal-deep));
  box-shadow: 0 0 0 3px rgba(0, 179, 154, 0.18);
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  font-size: 1.05rem;
}

.top-link {
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--mute);
  text-decoration: none;
}

.top-link:hover {
  color: var(--signal-deep);
}

.hero {
  position: relative;
  min-height: min(100vh, 820px);
  max-width: 1120px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4.5rem;
  display: grid;
  align-content: center;
  isolation: isolate;
}

.hero-radar {
  position: absolute;
  right: -8%;
  top: 8%;
  width: min(560px, 90vw);
  aspect-ratio: 1;
  z-index: -1;
  opacity: 0.9;
}

.radar-ring {
  position: absolute;
  inset: 18%;
  border: 1px solid rgba(14, 26, 43, 0.12);
  border-radius: 50%;
}

.radar-ring.r2 { inset: 8%; }
.radar-ring.r3 { inset: 0; }

.radar-sweep {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: conic-gradient(from 0deg, transparent 0deg, rgba(0, 179, 154, 0.28) 50deg, transparent 70deg);
  animation: sweep 4.8s linear infinite;
  mask-image: radial-gradient(circle, transparent 28%, #000 29%);
}

.radar-dot {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--signal);
  top: 22%;
  left: 62%;
  box-shadow: 0 0 0 6px rgba(0, 179, 154, 0.2);
  animation: pulse 2.4s var(--ease) infinite;
}

@keyframes sweep {
  to { transform: rotate(360deg); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.25); opacity: 0.7; }
}

.hero-copy {
  max-width: 36rem;
  animation: rise 0.9s var(--ease) both;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(22px); }
  to { opacity: 1; transform: none; }
}

.brand-hero {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 9vw, 5.5rem);
  font-weight: 800;
  letter-spacing: -0.045em;
  line-height: 0.95;
  color: var(--ink);
}

.hero h1 {
  margin: 0 0 1rem;
  max-width: 18ch;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3.4vw, 1.85rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.2;
  color: var(--ink-2);
}

.lede {
  margin: 0 0 1.75rem;
  max-width: 38ch;
  color: var(--mute);
  font-size: 1.08rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.75rem 1.35rem;
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.98rem;
  text-decoration: none;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s var(--ease);
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--signal) 0%, var(--signal-deep) 100%);
  box-shadow: 0 10px 28px rgba(0, 143, 122, 0.28);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(0, 143, 122, 0.35);
}

.btn-ghost {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(14, 26, 43, 0.12);
  backdrop-filter: blur(8px);
}

.btn-ghost:hover {
  transform: translateY(-2px);
  background: #fff;
}

.btn-lg {
  min-height: 3.35rem;
  padding-inline: 1.7rem;
  font-size: 1.05rem;
}

.section {
  max-width: 1120px;
  margin: 0 auto;
  padding: 4.5rem 1.5rem;
}

.section h2 {
  margin: 0 0 0.65rem;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.section-lede {
  margin: 0 0 2rem;
  max-width: 42ch;
  color: var(--mute);
}

.signal-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: rgba(14, 26, 43, 0.08);
  border: 1px solid rgba(14, 26, 43, 0.08);
  border-radius: 1.25rem;
  overflow: hidden;
}

.signal-list li {
  display: grid;
  grid-template-columns: minmax(7rem, 10rem) 1fr;
  gap: 1rem;
  padding: 1.35rem 1.5rem;
  background: rgba(255, 255, 255, 0.72);
}

.sig-label {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--signal-deep);
}

.sig-text {
  color: var(--ink-2);
}

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.25rem;
}

.steps li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: start;
  padding: 1.25rem 0;
  border-top: 1px solid rgba(14, 26, 43, 0.1);
}

.steps li:last-child {
  border-bottom: 1px solid rgba(14, 26, 43, 0.1);
}

.step-n {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.4rem;
  color: var(--signal);
  line-height: 1;
  padding-top: 0.15rem;
}

.steps h3 {
  margin: 0 0 0.25rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.steps p {
  margin: 0;
  color: var(--mute);
}

.close {
  text-align: left;
  padding-bottom: 5rem;
}

.close .btn {
  margin-top: 0.5rem;
}

.foot {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  max-width: 1120px;
  margin: 0 auto;
  padding: 1.5rem;
  border-top: 1px solid rgba(14, 26, 43, 0.08);
  font-family: var(--font-display);
  font-size: 0.9rem;
  color: var(--mute);
}

.foot a {
  color: var(--ink);
  text-decoration: none;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.in {
  opacity: 1;
  transform: none;
}

@media (max-width: 720px) {
  .hero {
    min-height: auto;
    padding-top: 1.5rem;
    padding-bottom: 3rem;
  }

  .hero-radar {
    right: -30%;
    top: -5%;
    opacity: 0.45;
  }

  .signal-list li {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }

  .brand-hero {
    font-size: clamp(2.4rem, 14vw, 3.6rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .radar-sweep,
  .radar-dot,
  .hero-copy {
    animation: none;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

.btn:focus-visible,
.top-link:focus-visible,
.brand:focus-visible,
.foot a:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}