:root {
  --bg: #f3f6fb;
  --surface: #ffffff;
  --surface-2: #f8fbff;
  --text: #0e1726;
  --muted: #4f6079;
  --line: #d8e1ee;
  --brand: #0ea5a2;
  --brand-700: #0b7f80;
  --accent: #2a64dc;
  --container: 1140px;
  --radius: 18px;
  --shadow: 0 18px 42px rgba(6, 18, 40, 0.09);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", sans-serif;
  color: var(--text);
  line-height: 1.55;
  background:
    radial-gradient(circle at 92% -8%, #d6f2ef 0%, transparent 33%),
    radial-gradient(circle at 0% 18%, #dbe7ff 0%, transparent 34%),
    var(--bg);
}

h1,
h2,
h3 {
  margin: 0 0 12px;
  line-height: 1.16;
  letter-spacing: -0.02em;
  font-family: "Sora", sans-serif;
}

h1 {
  font-size: clamp(2.1rem, 4.6vw, 4rem);
}

h2 {
  font-size: clamp(1.6rem, 2.5vw, 2.4rem);
}

p {
  margin: 0 0 12px;
  color: var(--muted);
}

ul,
ol {
  margin: 0;
  padding-left: 20px;
}

.container {
  width: min(var(--container), 92%);
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(243, 246, 251, 0.88);
  border-bottom: 1px solid rgba(216, 225, 238, 0.85);
  backdrop-filter: blur(10px);
}

.site-header .container {
  min-height: 72px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.brand {
  color: var(--text);
  text-decoration: none;
  font: 700 1.08rem "Sora", sans-serif;
}

.top-nav {
  margin-left: auto;
  display: flex;
  gap: 22px;
}

.top-nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
}

.top-nav a:hover,
.top-nav a:focus-visible {
  color: var(--text);
}

.hero {
  padding: clamp(48px, 7vw, 92px) 0 26px;
}

.hero-grid {
  background: linear-gradient(145deg, #0c1627 0%, #122443 52%, #1a2f53 100%);
  border-radius: calc(var(--radius) + 6px);
  box-shadow: var(--shadow);
  padding: clamp(24px, 4vw, 52px);
  display: grid;
  gap: 22px;
  grid-template-columns: 1.15fr 0.85fr;
}

.hero-content {
  color: #eaf1ff;
}

.eyebrow {
  margin-bottom: 14px;
  color: #cad9f4;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.8rem;
}

.hero h1 {
  color: #f8fbff;
  max-width: 12ch;
}

.hero-copy {
  color: #dce8fb;
  max-width: 58ch;
  font-size: clamp(1rem, 2vw, 1.17rem);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 18px;
  border-radius: 12px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 700;
  background: var(--brand);
  color: #032225;
  transition: transform 160ms ease, background-color 160ms ease;
}

.btn:hover,
.btn:focus-visible {
  background: #19bbb8;
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  border-color: rgba(221, 233, 251, 0.48);
  color: #e4edff;
}

.btn-outline:hover,
.btn-outline:focus-visible {
  background: rgba(229, 236, 252, 0.1);
}

.btn-small {
  min-height: 38px;
  padding: 8px 12px;
  margin-left: 6px;
}

.trust-list {
  list-style: none;
  padding: 0;
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.trust-list li {
  padding: 7px 10px;
  border-radius: 999px;
  background: rgba(227, 237, 252, 0.11);
  border: 1px solid rgba(227, 237, 252, 0.24);
  color: #dce9ff;
  font-size: 0.86rem;
}

.hero-panel {
  background: rgba(244, 248, 255, 0.08);
  border: 1px solid rgba(228, 237, 252, 0.26);
  border-radius: 16px;
  padding: 18px;
}

.panel-label {
  margin: 0 0 8px;
  font-size: 0.78rem;
  color: #c5d7f6;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.hero-panel h2 {
  color: #f2f7ff;
  font-size: 1.35rem;
  margin-bottom: 10px;
}

.panel-metrics {
  display: grid;
  gap: 10px;
}

.panel-metrics article {
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(228, 237, 252, 0.2);
  background: rgba(228, 237, 252, 0.06);
}

.metric-value {
  color: #69e5e3;
  font: 700 1.2rem "Sora", sans-serif;
  margin-bottom: 2px;
}

.metric-label {
  margin: 0;
  color: #d7e5fc;
  font-size: 0.9rem;
}

.panel-footnote {
  margin-top: 10px;
  color: #b7cbef;
  font-size: 0.8rem;
}

main section {
  margin-top: 52px;
}

.section-heading {
  margin-bottom: 16px;
}

.section-lead {
  max-width: 65ch;
}

.card-grid,
.specs-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(12, minmax(0, 1fr));
}

.system-card,
.project-card,
.specs-grid article {
  grid-column: span 4;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 22px;
  box-shadow: 0 10px 24px rgba(8, 21, 45, 0.05);
}

.system-card:hover,
.project-card:hover,
.specs-grid article:hover {
  border-color: #bdcde4;
}

.system-card p,
.project-card p,
.specs-grid p {
  color: var(--muted);
}

.system-card ul,
.specs-grid ul {
  margin-top: 8px;
  display: grid;
  gap: 7px;
}

.project-meta {
  margin: 0 0 8px;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--brand-700);
  font-weight: 700;
}

.specs-grid article {
  grid-column: span 6;
  background: linear-gradient(180deg, #ffffff 0%, var(--surface-2) 100%);
}

.process {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, #ffffff 0%, #f5f9ff 100%);
  padding: 22px;
}

.process-list {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 10px;
  padding-left: 0;
  list-style: none;
}

.process-list li {
  border: 1px solid var(--line);
  background: #ffffff;
  border-radius: 14px;
  padding: 12px;
}

.cta-band {
  margin-top: 62px;
  background: linear-gradient(135deg, #0d182b 0%, #173055 100%);
  padding: 52px 0;
}

.cta-band .container {
  display: grid;
  gap: 10px;
}

.cta-band h2,
.cta-band p {
  color: #edf3ff;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 22px 0 82px;
}

.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
}

.site-footer p {
  margin: 0;
  color: var(--muted);
}

.reveal {
  animation: reveal-up 560ms ease both;
}

.mobile-cta {
  position: fixed;
  left: 50%;
  bottom: 14px;
  transform: translateX(-50%);
  width: min(92%, 420px);
  text-align: center;
  text-decoration: none;
  font-weight: 700;
  border-radius: 12px;
  padding: 11px 14px;
  background: var(--brand);
  color: #032225;
  box-shadow: 0 16px 34px rgba(6, 18, 40, 0.25);
  display: none;
}

@keyframes reveal-up {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 980px) {
  .top-nav {
    display: none;
  }

  .hero-grid {
    grid-template-columns: 1fr;
  }

  .system-card,
  .project-card,
  .specs-grid article {
    grid-column: span 12;
  }

  .process-list {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .actions .btn {
    width: 100%;
  }

  .process-list {
    grid-template-columns: 1fr;
  }

  .site-footer .container {
    flex-direction: column;
    gap: 6px;
  }

  .mobile-cta {
    display: block;
  }
}