@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@500;600&display=swap');

:root {
  --blue: #017CF5;
  --blue-dark: #014A93;
  --green: #10B981;
  --teal: #06B6D4;
  --navy: #02091C;
  --ink: #0F172A;
  --muted: #64748B;
  --line: #E2E8F0;
  --surface: #F5F7FA;
  --white: #fff;
  --shadow: 0 12px 32px rgba(2, 9, 28, 0.12);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.65;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  max-width: 1160px;
  margin: auto;
  padding-left: 28px;
  padding-right: 28px;
}

.site-header {
  height: 76px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav-wrap {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand img {
  display: block;
  height: 42px;
  width: auto;
}

.site-header nav {
  display: flex;
  align-items: center;
  gap: 25px;
  font-size: 0.88rem;
  font-weight: 600;
  color: #475569;
}

.site-header nav a:hover {
  color: var(--blue);
}

.nav-button {
  color: var(--white) !important;
  background: var(--blue);
  padding: 9px 17px;
  border-radius: 10px;
}

.hero {
  overflow: hidden;
  background: linear-gradient(180deg, #f8fbff 0%, #fff 100%);
  padding: 92px 0 88px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 70px;
}

.eyebrow {
  font: 600 0.73rem/1.3 'JetBrains Mono', monospace;
  letter-spacing: 0.13em;
  color: #94A3B8;
  margin: 0 0 18px;
}

.eyebrow.blue { color: var(--blue); }
.eyebrow.green { color: #34D399; }

.hero h1 {
  font-size: clamp(2.6rem, 5vw, 4.7rem);
  line-height: 1.05;
  letter-spacing: -0.055em;
  margin: 0 0 25px;
  font-weight: 800;
  color: var(--navy);
}

.hero-lede {
  font-size: 1.16rem;
  color: var(--muted);
  max-width: 600px;
  margin: 0 0 32px;
}

.actions {
  display: flex;
  gap: 13px;
  flex-wrap: wrap;
}

.button {
  display: inline-block;
  border-radius: 10px;
  padding: 13px 20px;
  font-weight: 700;
  font-size: 0.9rem;
  transition: 0.2s;
}

.button.primary {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 6px 16px rgba(1, 124, 245, 0.22);
}

.button.primary:hover {
  background: var(--blue-dark);
  transform: translateY(-2px);
}

.button.secondary {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
}

.button.secondary:hover {
  border-color: var(--blue);
  color: var(--blue);
}

.trust-row {
  display: flex;
  gap: 20px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  margin-top: 30px;
}

.trust-row span:before {
  content: '✓';
  color: var(--green);
  margin-right: 7px;
}

.hero-art {
  position: relative;
  border-radius: 24px;
  min-height: 360px;
  background: var(--navy);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.hero-art > img {
  width: 100%;
  height: 100%;
  min-height: 360px;
  object-fit: cover;
  opacity: 0.42;
}

.network-card {
  position: absolute;
  bottom: 25px;
  left: 25px;
  right: 25px;
  background: rgba(2, 9, 28, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 15px;
  color: #fff;
  padding: 20px;
}

.status {
  font-size: 0.76rem;
  color: #a7f3d0;
  font-weight: 700;
}

.status i {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--green);
  border-radius: 50%;
  margin-right: 7px;
}

.network-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin: 20px 0;
  font-size: 0.78rem;
}

.network-line span {
  background: #123055;
  border-radius: 8px;
  padding: 9px 10px;
}

.network-line b {
  color: var(--teal);
}

.network-card small {
  color: #94A3B8;
  display: block;
  font-size: 0.73rem;
}

.section {
  padding: 104px 0;
}

.section-heading {
  max-width: 700px;
  margin-bottom: 48px;
}

.section-heading h2,
.start-grid h2,
.callout h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.1;
  letter-spacing: -0.04em;
  margin: 0 0 18px;
  color: var(--navy);
}

.section-heading p:not(.eyebrow),
.start-grid p {
  color: var(--muted);
  font-size: 1.05rem;
}

.cards {
  display: grid;
  gap: 20px;
}

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

.card {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 28px;
  background: #fff;
  box-shadow: 0 2px 6px rgba(2, 9, 28, 0.03);
}

.card:hover {
  border-color: #9ECBFB;
  box-shadow: var(--shadow);
  transform: translateY(-3px);
  transition: 0.2s;
}

.icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: #E8F2FE;
  color: var(--blue);
  display: grid;
  place-items: center;
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 22px;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 1.15rem;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

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

.section-heading.light h2 {
  color: #fff;
}

.section-heading.light p:not(.eyebrow) {
  color: #94A3B8;
}

.architecture {
  display: flex;
  align-items: center;
  gap: 20px;
  margin: 48px 0;
}

.site-box {
  border: 1px solid #1E3A63;
  border-radius: 16px;
  background: #0A1A34;
  padding: 25px;
  flex: 1;
}

.site-label {
  font: 500 0.65rem 'JetBrains Mono', monospace;
  letter-spacing: 0.1em;
  color: #6EB1F9;
}

.site-nodes {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 20px 0;
}

.site-nodes div {
  background: #123055;
  border-radius: 9px;
  padding: 13px;
}

.site-nodes strong,
.site-nodes small,
.hq-box strong,
.hq-box small {
  display: block;
}

.site-nodes strong { font-size: 0.8rem; }
.site-nodes small,
.hq-box small {
  color: #94A3B8;
  font-size: 0.68rem;
}

.store {
  border: 1px dashed #10B981;
  color: #6EE7B7;
  border-radius: 8px;
  text-align: center;
  padding: 10px;
  font-size: 0.78rem;
}

.sync-arrow {
  color: #22D3EE;
  text-align: center;
  font-size: 2rem;
}

.sync-arrow small {
  display: block;
  font: 500 0.62rem 'JetBrains Mono', monospace;
  color: #94A3B8;
  white-space: nowrap;
}

.hq-box {
  border: 1px solid #1E3A63;
  border-radius: 16px;
  padding: 24px;
  background: #061532;
  min-width: 180px;
}

.principles {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 25px;
  border-top: 1px solid #1E3A63;
  padding-top: 28px;
}

.principles b,
.principles span {
  display: block;
}

.principles b {
  font-size: 0.9rem;
}

.principles span {
  font-size: 0.78rem;
  color: #94A3B8;
  margin-top: 5px;
}

.start-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 85px;
  align-items: start;
}

.start-links {
  border-top: 1px solid var(--line);
}

.start-links a {
  display: block;
  border-bottom: 1px solid var(--line);
  padding: 20px 5px;
}

.start-links a:hover strong {
  color: var(--blue);
}

.start-links strong,
.start-links span {
  display: block;
}

.start-links strong {
  font-size: 1rem;
}

.start-links span {
  color: var(--muted);
  font-size: 0.83rem;
  margin-top: 4px;
}

.callout {
  background: linear-gradient(120deg, var(--blue-dark), var(--navy));
  color: #fff;
  padding: 55px 0;
}

.callout-inner {
  display: flex;
  align-items: center;
  gap: 24px;
}

.callout h2 {
  color: #fff;
  margin: 0 0 7px;
  font-size: 2rem;
}

.callout p {
  margin: 0;
  color: #CBD5E1;
}

.callout-inner > div {
  flex: 1;
}

.button.white {
  background: #fff;
  color: var(--blue-dark);
  white-space: nowrap;
}

.footer {
  background: #010611;
  color: #fff;
  padding: 65px 0 25px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 45px;
  padding-bottom: 50px;
}

.footer-grid img {
  margin-bottom: 17px;
}

.footer-grid p {
  color: #94A3B8;
  max-width: 300px;
  font-size: 0.85rem;
}

.footer-grid strong {
  display: block;
  color: #fff;
  margin-bottom: 15px;
}

.footer-grid a {
  display: block;
  color: #94A3B8;
  font-size: 0.84rem;
  margin: 8px 0;
}

.footer-grid a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid #1E293B;
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  gap: 15px;
  color: #64748B;
  font-size: 0.7rem;
}

@media (max-width: 800px) {
  .site-header nav a:not(.nav-button) {
    display: none;
  }

  .hero {
    padding: 62px 0;
  }

  .hero-grid,
  .start-grid {
    grid-template-columns: 1fr;
    gap: 45px;
  }

  .cards.three,
  .principles {
    grid-template-columns: 1fr;
  }

  .architecture {
    flex-direction: column;
    align-items: stretch;
  }

  .sync-arrow {
    transform: rotate(90deg);
    height: 35px;
  }

  .hq-box {
    min-width: 0;
  }

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

  .footer-grid > div:first-child {
    grid-column: 1 / -1;
  }

  .footer-bottom {
    flex-direction: column;
  }

  .hero-art {
    min-height: 300px;
  }

  .hero-art > img {
    min-height: 300px;
  }
}

@media (max-width: 460px) {
  .container {
    padding-left: 20px;
    padding-right: 20px;
  }

  .site-header {
    height: 68px;
  }

  .brand img {
    width: 175px;
  }

  .hero h1 {
    font-size: 2.65rem;
  }

  .site-nodes {
    grid-template-columns: 1fr;
  }

  .callout-inner {
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .callout-inner .button {
    margin-left: 88px;
  }

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