:root {
  --bg: #0d1016;
  --bg-deep: #080a0e;
  --panel: #141821;
  --panel-hover: #181d27;
  --border: #262d3a;
  --border-soft: #1d222d;
  --text: #e7ebf2;
  --muted: #9ba3b1;
  --muted-dim: #737b89;
  --accent: #78afe8;
  --accent-soft: rgba(120, 175, 232, 0.12);
  --success: #7cb79a;
  --max: 1120px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at 50% -10%, rgba(63, 119, 180, 0.15), transparent 32rem),
    linear-gradient(rgba(255,255,255,0.014) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.014) 1px, transparent 1px),
    var(--bg);
  background-size: auto, 32px 32px, 32px 32px, auto;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a { color: inherit; }

.site-header,
main,
.site-footer {
  width: min(calc(100% - 40px), var(--max));
  margin-inline: auto;
}

.site-header {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-soft);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-weight: 700;
  letter-spacing: 0.055em;
}

.accent { color: var(--accent); }

.brand-mark {
  width: 13px;
  height: 13px;
  border: 2px solid var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(120, 175, 232, 0.08), 0 0 16px rgba(120, 175, 232, 0.45);
  position: relative;
}

.brand-mark::after {
  content: "";
  position: absolute;
  width: 7px;
  height: 2px;
  background: var(--accent);
  right: -7px;
  top: 3px;
}

.site-nav {
  display: flex;
  gap: 24px;
}

.site-nav a,
.site-footer a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.82rem;
}

.site-nav a:hover,
.site-footer a:hover { color: var(--text); }

.hero {
  min-height: 650px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 80px 0;
  border-bottom: 1px solid var(--border-soft);
}

.eyebrow,
.section-label {
  margin: 0 0 20px;
  color: var(--accent);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.72rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
}

.eyebrow span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 10px var(--success);
}

h1 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(3.4rem, 8vw, 7rem);
  line-height: 0.93;
  letter-spacing: -0.065em;
  font-weight: 670;
}

h1 span {
  color: var(--muted-dim);
  font-weight: 580;
}

.hero-copy {
  max-width: 610px;
  margin: 32px 0 0;
  color: var(--muted);
  font-size: 1.04rem;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin-top: 34px;
}

.button {
  min-height: 46px;
  padding: 0 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  text-decoration: none;
  font-size: 0.86rem;
  font-weight: 650;
  transition: transform 150ms, background 150ms, border-color 150ms;
}

.button:hover { transform: translateY(-2px); }

.button.primary {
  background: var(--accent);
  color: var(--bg-deep);
}

.button.primary:hover { background: #91c0ef; }

.button.secondary {
  border: 1px solid var(--border);
  color: var(--muted);
  background: rgba(255,255,255,0.015);
}

.button.secondary:hover {
  color: var(--text);
  border-color: var(--muted-dim);
}

.status-row {
  display: flex;
  gap: 24px;
  margin-top: 56px;
  color: var(--muted-dim);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.status-row span {
  display: flex;
  align-items: center;
  gap: 7px;
}

.status-row i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--success);
}

.tools-section,
.principles-section {
  padding: 112px 0;
  border-bottom: 1px solid var(--border-soft);
}

.section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 38px;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.2rem);
  letter-spacing: -0.045em;
}

.section-heading > p {
  max-width: 320px;
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
  font-size: 0.9rem;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.tool-card {
  min-height: 350px;
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 26px;
  color: var(--text);
  text-decoration: none;
  background:
    linear-gradient(145deg, rgba(255,255,255,0.025), transparent 45%),
    var(--panel);
  border: 1px solid var(--border);
  border-radius: 5px;
  overflow: hidden;
  transition: transform 180ms, background 180ms, border-color 180ms;
}

.tool-card:hover {
  transform: translateY(-4px);
  background-color: var(--panel-hover);
  border-color: #3a4658;
}

.tool-card.featured {
  background:
    radial-gradient(circle at 90% 15%, rgba(120,175,232,0.16), transparent 13rem),
    linear-gradient(145deg, rgba(255,255,255,0.025), transparent 45%),
    var(--panel);
}

.tool-card-top {
  display: flex;
  justify-content: space-between;
  color: var(--muted-dim);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.72rem;
}

.tool-arrow {
  font-size: 1.1rem;
  transition: transform 180ms, color 180ms;
}

.tool-card:hover .tool-arrow {
  transform: translate(3px, -3px);
  color: var(--accent);
}

.tool-icon {
  width: 52px;
  height: 52px;
  margin: 50px 0 24px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  background: var(--bg-deep);
  border-radius: 4px;
  position: relative;
}

.tool-icon::before,
.tool-icon::after,
.tool-icon span {
  content: "";
  position: absolute;
}

.image-icon::before {
  width: 25px;
  height: 20px;
  border: 2px solid var(--accent);
}
.image-icon::after {
  width: 6px;
  height: 6px;
  top: 14px;
  right: 13px;
  border-radius: 50%;
  background: var(--accent);
}
.image-icon span {
  width: 18px;
  height: 10px;
  left: 16px;
  bottom: 13px;
  border-left: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
  transform: skewY(-35deg);
}

.password-icon::before {
  width: 24px;
  height: 18px;
  bottom: 11px;
  border: 2px solid var(--accent);
  border-radius: 3px;
}
.password-icon::after {
  width: 14px;
  height: 14px;
  top: 9px;
  border: 2px solid var(--accent);
  border-bottom: 0;
  border-radius: 10px 10px 0 0;
}

.ledger-icon::before {
  width: 24px;
  height: 29px;
  border: 2px solid var(--accent);
  border-radius: 2px;
}
.ledger-icon::after {
  width: 13px;
  height: 2px;
  background: var(--accent);
  box-shadow: 0 6px 0 var(--accent), 0 12px 0 var(--accent);
}

.network-icon::before {
  width: 8px;
  height: 8px;
  border: 2px solid var(--accent);
  border-radius: 50%;
  box-shadow: -14px 13px 0 -1px var(--bg-deep), -14px 13px 0 1px var(--accent),
              14px 13px 0 -1px var(--bg-deep), 14px 13px 0 1px var(--accent);
}
.network-icon::after {
  width: 29px;
  height: 16px;
  top: 20px;
  border-left: 2px solid var(--accent);
  border-right: 2px solid var(--accent);
  border-top: 2px solid var(--accent);
}

.tool-card h3 {
  margin: 0;
  font-size: 1.35rem;
  letter-spacing: -0.025em;
}

.tool-card p {
  max-width: 46ch;
  margin: 12px 0 24px;
  color: var(--muted);
  line-height: 1.65;
  font-size: 0.88rem;
}

.tags {
  display: flex;
  gap: 7px;
  margin-top: auto;
}

.tags span {
  padding: 5px 8px;
  color: var(--muted-dim);
  border: 1px solid var(--border);
  border-radius: 3px;
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.64rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.principle-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--border);
  border-left: 1px solid var(--border);
}

.principle-grid article {
  min-height: 260px;
  padding: 28px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.principle-grid article > span {
  color: var(--accent);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.7rem;
}

.principle-grid h3 {
  margin: 74px 0 12px;
  font-size: 1rem;
}

.principle-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.65;
}

.site-footer {
  min-height: 180px;
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  align-items: center;
  gap: 30px;
  color: var(--muted-dim);
  font-size: 0.76rem;
}

.site-footer p { margin: 0; }

.site-footer > div {
  display: flex;
  gap: 24px;
}

@media (max-width: 720px) {
  .site-header,
  main,
  .site-footer {
    width: min(calc(100% - 28px), var(--max));
  }

  .site-nav a:not(:last-child) { display: none; }

  .hero {
    min-height: auto;
    padding: 110px 0 90px;
  }

  h1 { font-size: clamp(3.1rem, 15vw, 5rem); }

  .status-row {
    flex-wrap: wrap;
    gap: 14px 20px;
  }

  .section-heading {
    display: block;
  }

  .section-heading > p {
    margin-top: 16px;
  }

  .tool-grid,
  .principle-grid {
    grid-template-columns: 1fr;
  }

  .tool-card { min-height: 330px; }

  .site-footer {
    padding: 54px 0;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}