/* TRU8 — Less is more. We dropped the E.
   Design system: black · teal · white · gray · Inter · mono numbers */
:root {
  --black: #0a0a0a;
  --white: #ffffff;
  --teal: #00c2c7;
  --teal-dim: rgba(0, 194, 199, 0.12);
  --teal-glow: rgba(0, 194, 199, 0.28);
  --gray: #6b6b6b;
  --gray-soft: #9a9a9a;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.14);
  --panel: #111111;
  --panel-2: #151515;
  --radius: 16px;
  --radius-sm: 10px;
  --nav-h: 68px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --font: "Inter", system-ui, -apple-system, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --max: 1120px;
  --text: var(--white);
  --muted: var(--gray);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  font-family: var(--font);
  background: var(--black);
  color: var(--text);
  line-height: 1.55;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ambient mesh */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(ellipse 70% 50% at 85% -10%, rgba(0, 194, 199, 0.12), transparent 55%),
    radial-gradient(ellipse 50% 40% at -5% 90%, rgba(0, 194, 199, 0.06), transparent 50%),
    radial-gradient(ellipse 40% 30% at 50% 50%, rgba(255, 255, 255, 0.015), transparent 60%);
}

a {
  color: inherit;
  text-decoration: none;
}
img,
svg {
  display: block;
  max-width: 100%;
}

.wrap {
  width: min(100% - 40px, var(--max));
  margin-inline: auto;
  position: relative;
  z-index: 1;
}

/* ---------- nav ---------- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  backdrop-filter: blur(16px) saturate(1.2);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  background: rgba(10, 10, 10, 0.72);
  border-bottom: 1px solid var(--line);
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}
.site-nav.scrolled {
  border-bottom-color: var(--line-strong);
  background: rgba(10, 10, 10, 0.9);
}
.site-nav .inner {
  width: min(100% - 40px, var(--max));
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: -0.04em;
}
.brand .tru {
  color: var(--white);
}
.brand .eight {
  color: var(--teal);
}
.brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--black);
  border: 1px solid var(--line-strong);
  display: grid;
  place-items: center;
  font-weight: 700;
  color: var(--teal);
  font-size: 1rem;
  line-height: 1;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-links a {
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--gray-soft);
  font-size: 0.92rem;
  font-weight: 500;
  transition: color 0.2s, background 0.2s;
}
.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--white);
  background: rgba(255, 255, 255, 0.05);
}
.nav-links a[aria-current="page"] {
  color: var(--teal);
}

.nav-cta {
  display: flex;
  gap: 8px;
  align-items: center;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: transparent;
  color: var(--white);
  cursor: pointer;
  place-items: center;
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: currentColor;
  position: relative;
}
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 1.5px;
  background: currentColor;
}
.nav-toggle span::before {
  top: -6px;
}
.nav-toggle span::after {
  top: 6px;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.2s var(--ease), background 0.2s, border-color 0.2s, box-shadow 0.2s;
  white-space: nowrap;
  font-family: inherit;
}
.btn:active {
  transform: scale(0.98);
}
.btn-primary {
  background: var(--white);
  color: var(--black);
}
.btn-primary:hover {
  box-shadow: 0 0 0 4px var(--teal-dim), 0 12px 40px rgba(0, 0, 0, 0.35);
}
.btn-secondary {
  background: transparent;
  color: var(--white);
  border-color: var(--line-strong);
}
.btn-secondary:hover {
  border-color: var(--teal);
  color: var(--teal);
}
.btn-teal {
  background: var(--teal);
  color: var(--black);
}
.btn-teal:hover {
  box-shadow: 0 0 32px var(--teal-glow);
}
.btn-sm {
  padding: 8px 14px;
  font-size: 0.85rem;
}
.btn-block {
  width: 100%;
}

/* ---------- hero ---------- */
.hero {
  padding: clamp(48px, 10vw, 100px) 0 clamp(40px, 8vw, 72px);
  position: relative;
  z-index: 1;
}
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 20px;
}
.hero-kicker::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 12px var(--teal);
  animation: pulse 2.4s var(--ease) infinite;
}
@keyframes pulse {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.55;
    transform: scale(0.85);
  }
}

.hero-title {
  font-size: clamp(4rem, 14vw, 8.5rem);
  font-weight: 700;
  letter-spacing: -0.06em;
  line-height: 0.92;
  margin-bottom: 18px;
}
.hero-title .eight {
  color: var(--teal);
  text-shadow: 0 0 60px var(--teal-glow);
}

.hero-line {
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  margin-bottom: 8px;
}
.hero-sub {
  color: var(--gray);
  font-size: 1.05rem;
  max-width: 36rem;
  margin-bottom: 28px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 48px;
}

/* ---------- proof strip ---------- */
.proof {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin: 0 0 clamp(48px, 8vw, 88px);
}
.proof-card {
  background: var(--panel);
  padding: clamp(24px, 4vw, 40px) clamp(18px, 3vw, 32px);
  transition: background 0.3s var(--ease);
}
.proof-card:hover {
  background: var(--panel-2);
}
.proof-label {
  color: var(--gray);
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 12px;
}
.proof-result {
  font-family: var(--mono);
  font-size: clamp(2.4rem, 6vw, 3.6rem);
  font-weight: 600;
  letter-spacing: -0.04em;
  color: var(--teal);
  line-height: 1;
  margin-bottom: 10px;
}
.proof-result .arrow {
  color: var(--gray);
  font-weight: 400;
  font-size: 0.55em;
  margin-right: 6px;
}
.proof-multi {
  font-family: var(--mono);
  font-size: 0.95rem;
  color: var(--white);
  opacity: 0.85;
}

/* ---------- sections ---------- */
.section {
  padding: clamp(48px, 8vw, 96px) 0;
  position: relative;
  z-index: 1;
}
.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 14px;
}
.section h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.15;
  margin-bottom: 16px;
  max-width: 18ch;
}
.section .lede {
  color: var(--gray);
  font-size: 1.05rem;
  max-width: 40rem;
  margin-bottom: 32px;
}

/* token map */
.tokens {
  display: grid;
  gap: 10px;
}
.token-row {
  display: grid;
  grid-template-columns: 140px 1fr auto;
  gap: 16px;
  align-items: center;
  padding: 18px 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  transition: border-color 0.25s, transform 0.25s var(--ease);
}
.token-row:hover {
  border-color: rgba(0, 194, 199, 0.35);
  transform: translateX(4px);
}
.token-id {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--teal);
  font-weight: 600;
}
.token-name {
  font-weight: 500;
  color: var(--white);
}
.token-name small {
  display: block;
  color: var(--gray);
  font-weight: 400;
  font-size: 0.85rem;
  margin-top: 2px;
}
.token-out {
  font-family: var(--mono);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--white);
  white-space: nowrap;
}

/* cards */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 180px;
  transition: border-color 0.25s, transform 0.25s var(--ease), box-shadow 0.25s;
}
.card:hover {
  border-color: rgba(0, 194, 199, 0.4);
  transform: translateY(-3px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
}
.card-num {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--teal);
  font-weight: 600;
  letter-spacing: 0.08em;
}
.card h3 {
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}
.card p {
  color: var(--gray);
  font-size: 0.95rem;
  flex: 1;
}
.card .metric {
  font-family: var(--mono);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--teal);
}

/* commercial band */
.band {
  margin: clamp(24px, 5vw, 48px) 0;
  padding: clamp(28px, 5vw, 48px);
  border-radius: calc(var(--radius) + 4px);
  background:
    radial-gradient(ellipse 80% 100% at 100% 0%, rgba(0, 194, 199, 0.14), transparent 55%),
    var(--panel);
  border: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1.4fr auto;
  gap: 24px;
  align-items: center;
}
.band h2 {
  max-width: none;
  margin-bottom: 8px;
}
.band p {
  color: var(--gray);
  max-width: 36rem;
}
.band-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 220px;
}

/* interactive demo */
.demo-lab {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  align-items: stretch;
}
.demo-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.demo-panel h3 {
  font-size: 1rem;
  letter-spacing: -0.02em;
}
.demo-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}
.demo-controls label {
  font-size: 0.8rem;
  color: var(--gray);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.demo-controls input[type="range"] {
  width: 160px;
  accent-color: var(--teal);
}
.demo-controls select,
.demo-controls input[type="text"] {
  background: var(--black);
  border: 1px solid var(--line-strong);
  color: var(--white);
  border-radius: 8px;
  padding: 8px 10px;
  font-family: var(--mono);
  font-size: 0.85rem;
}
.demo-readout {
  font-family: var(--mono);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 600;
  color: var(--teal);
  letter-spacing: -0.04em;
  line-height: 1.1;
}
.demo-meta {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--gray);
  line-height: 1.6;
}
.demo-hex {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--gray-soft);
  word-break: break-all;
  background: var(--black);
  border-radius: 8px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  max-height: 88px;
  overflow: auto;
}
.demo-bar {
  height: 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  overflow: hidden;
}
.demo-bar > i {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--teal), #5ef0df);
  border-radius: 999px;
  transition: width 0.7s var(--ease);
}

/* demo list page */
.demo-list {
  display: grid;
  gap: 10px;
}
.demo-item {
  display: grid;
  grid-template-columns: 48px 1fr auto;
  gap: 16px;
  align-items: center;
  padding: 16px 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  transition: border-color 0.2s, background 0.2s;
}
.demo-item:hover {
  border-color: rgba(0, 194, 199, 0.35);
  background: var(--panel-2);
}
.demo-item .n {
  font-family: var(--mono);
  color: var(--teal);
  font-weight: 600;
}
.demo-item .t {
  font-weight: 500;
}
.demo-item .t small {
  display: block;
  color: var(--gray);
  font-weight: 400;
  font-size: 0.85rem;
  margin-top: 2px;
}
.demo-item .r {
  font-family: var(--mono);
  color: var(--white);
  font-size: 0.95rem;
  text-align: right;
}

/* license */
.license-box {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(24px, 4vw, 40px);
  max-width: 640px;
}
.license-box pre {
  font-family: var(--mono);
  font-size: 0.95rem;
  line-height: 1.7;
  white-space: pre-wrap;
  color: var(--gray-soft);
  margin: 20px 0;
}
.credit-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--teal-dim);
  border: 1px solid rgba(0, 194, 199, 0.35);
  color: var(--teal);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 16px;
}

/* footer */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 36px 0 48px;
  position: relative;
  z-index: 1;
  margin-top: 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 28px;
}
.footer-brand {
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.04em;
  margin-bottom: 8px;
}
.footer-brand .eight {
  color: var(--teal);
}
.footer-note {
  color: var(--gray);
  font-size: 0.9rem;
  max-width: 28rem;
}
.footer-col h4 {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 12px;
}
.footer-col a {
  display: block;
  color: var(--gray-soft);
  font-size: 0.92rem;
  padding: 4px 0;
  transition: color 0.15s;
}
.footer-col a:hover {
  color: var(--teal);
}
.footer-credit {
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--gray);
}
.footer-credit strong {
  color: var(--teal);
  font-weight: 600;
}

/* reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.in {
  opacity: 1;
  transform: none;
}

/* page title block */
.page-hero {
  padding: clamp(36px, 7vw, 64px) 0 12px;
  position: relative;
  z-index: 1;
}
.page-hero h1 {
  font-size: clamp(2.5rem, 7vw, 4rem);
  letter-spacing: -0.045em;
  font-weight: 700;
  line-height: 1.05;
  margin-bottom: 12px;
}
.page-hero p {
  color: var(--gray);
  font-size: 1.1rem;
  max-width: 36rem;
}

/* mobile */
@media (max-width: 860px) {
  .proof {
    grid-template-columns: 1fr;
  }
  .cards {
    grid-template-columns: 1fr;
  }
  .band {
    grid-template-columns: 1fr;
  }
  .demo-lab {
    grid-template-columns: 1fr;
  }
  .token-row {
    grid-template-columns: 1fr;
    gap: 6px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .nav-links,
  .nav-cta .btn-secondary {
    display: none;
  }
  .nav-toggle {
    display: grid;
  }
  .site-nav.open .nav-links {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: rgba(10, 10, 10, 0.96);
    border-bottom: 1px solid var(--line);
    padding: 12px 20px 20px;
    gap: 4px;
  }
  .site-nav.open .nav-links a {
    padding: 12px 14px;
  }
}

/* selection */
::selection {
  background: rgba(0, 194, 199, 0.35);
  color: var(--white);
}

/* focus */
:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
}