:root {
  --bg:           #0a1322;
  --bg-soft:      #0f1c33;
  --panel:        rgba(18, 32, 56, 0.7);
  --panel-strong: rgba(22, 40, 68, 0.86);
  --line:         rgba(73, 198, 255, 0.18);
  --line-soft:    rgba(73, 198, 255, 0.1);
  --blue:         #49c6ff;
  --blue-soft:    rgba(73, 198, 255, 0.16);
  --green:        #49dca9;
  --green-soft:   rgba(73, 220, 169, 0.16);
  --purple:       #a58fff;
  --purple-soft:  rgba(165, 143, 255, 0.18);
  --text:         #eaf3ff;
  --muted:        #95accc;
  --dim:          #6c8099;
  --shadow:       0 20px 44px rgba(0, 0, 0, 0.42);
}

* { box-sizing: border-box; }

html, body { background: var(--bg); }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  background:
    radial-gradient(ellipse 80% 40% at 50% 0%, rgba(73, 198, 255, 0.18), transparent 65%),
    radial-gradient(ellipse 50% 30% at 88% 22%, rgba(73, 220, 169, 0.12), transparent 65%),
    radial-gradient(ellipse 48% 32% at 8% 80%, rgba(165, 143, 255, 0.12), transparent 70%),
    linear-gradient(180deg, #0a1322 0%, #0f1c33 50%, #0a1322 100%);
  background-attachment: fixed;
}

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

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

/* BAR */
.bar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(10, 19, 34, 0.78);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.bar .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
  gap: 16px;
  flex-wrap: wrap;
}
.brand-link { display: inline-flex; align-items: center; gap: 10px; }
.brand-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 14px var(--blue);
}
.brand-name {
  font-weight: 800;
  font-size: 0.96rem;
  letter-spacing: -0.005em;
  color: var(--text);
}
.bar-nav { display: flex; gap: 18px; flex-wrap: wrap; }
.bar-nav a {
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--muted);
  transition: color 160ms ease;
}
.bar-nav a:hover, .bar-nav a:focus-visible { color: var(--blue); }

/* HERO */
.hero { padding: 72px 0 64px; }
.eyebrow {
  display: inline-block;
  margin: 0 0 14px;
  padding: 4px 12px;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--blue);
  background: var(--blue-soft);
  border: 1px solid rgba(73, 198, 255, 0.36);
  border-radius: 999px;
}
.hero h1 {
  margin: 8px 0 14px;
  font-size: clamp(2.4rem, 6.8vw, 3.8rem);
  font-weight: 900;
  line-height: 1.04;
  letter-spacing: -0.022em;
  color: var(--text);
  text-shadow: 0 0 38px rgba(73, 198, 255, 0.32);
}
.lead {
  margin: 0 0 16px;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--blue);
}
.sub {
  margin: 0 0 24px;
  max-width: 66ch;
  font-size: 1.02rem;
  line-height: 1.6;
  color: var(--muted);
}
.hero-meta { display: flex; flex-wrap: wrap; gap: 8px; }
.meta-pill {
  padding: 6px 12px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text);
}

/* BLOCKS */
.block { padding: 64px 0; }
.block-alt { background: linear-gradient(180deg, transparent, rgba(15, 28, 51, 0.65) 50%, transparent); }
.kicker {
  margin: 0 0 6px;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--green);
}
.block h2 {
  margin: 0 0 14px;
  font-size: clamp(1.6rem, 4.4vw, 2.2rem);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.012em;
}
.block-lead {
  margin: 0 0 28px;
  max-width: 70ch;
  line-height: 1.6;
  color: var(--muted);
}

/* DOMAINS */
.domains {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 8px;
}
@media (min-width: 760px) {
  .domains { grid-template-columns: 1fr 1fr; }
}
.domain-card {
  padding: 22px 22px 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
}
.domain-card-legal { border-color: rgba(73, 220, 169, 0.26); }
.domain-card-legal .domain-label { color: var(--green); background: var(--green-soft); border-color: rgba(73, 220, 169, 0.36); }
.domain-label {
  display: inline-block;
  margin: 0 0 12px;
  padding: 4px 10px;
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--blue);
  background: var(--blue-soft);
  border: 1px solid rgba(73, 198, 255, 0.36);
  border-radius: 999px;
}
.domain-card h3 {
  margin: 0 0 10px;
  font-size: 1.18rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text);
}
.domain-card p {
  margin: 0 0 14px;
  font-size: 0.96rem;
  line-height: 1.55;
  color: var(--muted);
}
.domain-list {
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.92rem;
  color: var(--text);
}
.domain-list a {
  color: var(--blue);
  font-weight: 700;
  border-bottom: 1px dotted rgba(73, 198, 255, 0.32);
  transition: color 160ms, border-color 160ms;
}
.domain-card-legal .domain-list a { color: var(--green); border-color: rgba(73, 220, 169, 0.32); }
.domain-list a:hover { color: #8ff5d1; border-color: var(--green); }
.domain-card .domain-list a:hover { color: #87dffd; border-color: var(--blue); }

/* LAYERS */
.layers {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 28px 18px 28px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: var(--shadow);
}
.layer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 14px 22px;
  background: var(--panel-strong);
  border: 1px solid var(--line);
  border-radius: 16px;
  min-width: 280px;
  max-width: 520px;
  text-align: center;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}
.layer:hover {
  transform: translateY(-1px);
  border-color: var(--blue);
  box-shadow: 0 12px 28px rgba(73, 198, 255, 0.22);
}
.layer-name { font-weight: 900; font-size: 1.02rem; color: var(--text); }
.layer-role { font-size: 0.82rem; color: var(--muted); }
.layer-self {
  border-color: rgba(165, 143, 255, 0.55);
  box-shadow: 0 0 36px rgba(165, 143, 255, 0.22);
}
.layer-self .layer-name { color: var(--purple); }
.layer-arrow {
  width: 2px;
  height: 28px;
  background: linear-gradient(180deg, var(--blue), rgba(73, 198, 255, 0));
}
.layer-arrow-fork { height: 24px; }
.branch-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  width: 100%;
  max-width: 880px;
}
@media (min-width: 760px) {
  .branch-row { grid-template-columns: 1fr 1fr; }
}
.branch {
  padding: 18px 16px 16px;
  background: var(--panel-strong);
  border: 1px solid var(--line);
  border-radius: 18px;
}
.branch-right { border-color: rgba(73, 220, 169, 0.26); }
.branch-parent {
  display: inline-block;
  margin: 0 0 10px;
  padding: 8px 14px;
  background: rgba(73, 220, 169, 0.18);
  border: 1px solid rgba(73, 220, 169, 0.45);
  border-radius: 12px;
  font-weight: 800;
  color: var(--green);
  transition: transform 160ms, box-shadow 160ms;
}
.branch-parent:hover { transform: translateY(-1px) scale(1.02); box-shadow: 0 8px 20px rgba(73, 220, 169, 0.24); }
.branch-title { margin: 0 0 4px; font-weight: 900; color: var(--text); }
.branch-sub   { margin: 0 0 12px; font-size: 0.84rem; color: var(--muted); }
.branch-nodes { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.branch-node {
  padding: 6px 10px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text);
  transition: transform 160ms, border-color 160ms;
}
a.branch-node:hover { transform: translateY(-1px); border-color: var(--blue); }
.branch-right a.branch-node:hover { border-color: var(--green); }
.branch-foot { margin: 8px 0 0; font-size: 0.78rem; color: var(--dim); }

/* ENGINE */
.engine {
  width: 100%;
  max-width: 880px;
  padding: 18px 22px;
  background:
    linear-gradient(135deg, rgba(73, 198, 255, 0.14), rgba(165, 143, 255, 0.16));
  border: 1px solid rgba(165, 143, 255, 0.42);
  border-radius: 18px;
  text-align: center;
}
.engine-name {
  margin: 0 0 4px;
  font-size: 1.18rem;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--text);
}
.engine-sub { margin: 0; font-size: 0.86rem; color: var(--muted); }

/* CARDS */
.cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: 8px 0 28px;
}
@media (min-width: 760px) {
  .cards { grid-template-columns: repeat(3, 1fr); }
}
.card {
  padding: 20px 18px 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
}
.card h3 {
  margin: 0 0 10px;
  font-size: 1.04rem;
  font-weight: 800;
  color: var(--blue);
  letter-spacing: -0.01em;
}
.card p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.55;
  color: var(--muted);
}
.card strong { color: var(--green); }
.card em { color: var(--text); font-style: italic; }

/* TRUST */
.trust {
  margin-top: 22px;
  padding: 22px 22px 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
}
.trust h3 {
  margin: 0 0 10px;
  font-size: 1.02rem;
  font-weight: 800;
  color: var(--green);
}
.trust p {
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.6;
  color: var(--muted);
}
.trust p strong { color: var(--text); }

/* CLOSING */
.closing { text-align: center; }
.closing-lead {
  margin: 6px auto 0;
  max-width: 60ch;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--muted);
}
.closing-lead a { color: var(--blue); border-bottom: 1px dotted rgba(73, 198, 255, 0.45); }
.closing-lead a:hover { color: #87dffd; border-color: var(--blue); }

/* FOOTER */
.footer {
  margin-top: 40px;
  padding: 36px 0 56px;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, transparent, rgba(7, 13, 26, 0.6) 60%, rgba(7, 13, 26, 0.85) 100%);
}
.footer .wrap {
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: center;
}
.footer-line { margin: 0; color: var(--text); font-weight: 600; }
.footer-line strong { color: var(--blue); font-weight: 900; }
.footer-sub  { margin: 0; color: var(--muted); font-size: 0.86rem; }
.footer-by   { margin: 4px 0 0; color: var(--muted); font-size: 0.86rem; }
.footer-by a {
  color: var(--blue);
  font-weight: 700;
  border-bottom: 1px dotted rgba(73, 198, 255, 0.45);
}
.footer-by a:hover, .footer-by a:focus-visible { color: #87dffd; }
.footer-sep { padding: 0 8px; color: var(--dim); }

@media (prefers-reduced-motion: reduce) {
  .layer, .branch-parent, .branch-node { transition: none; }
}