:root {
  --white: #ffffff;
  --silver: #f4f6f8;
  --gray-100: #e8ecf0;
  --gray-200: #d1d9e0;
  --gray-400: #94a3b8;
  --gray-600: #64748b;
  --navy: #0a2540;
  --navy-mid: #1a365d;
  --navy-soft: #2d4a6f;
  --blue: #0066cc;
  --blue-bright: #0078e7;
  --blue-light: #e6f0fa;
  --blue-glow: rgba(0, 102, 204, 0.12);
  --ink: #0f172a;
  --text: #334155;
  --muted: #64748b;
  --border: #e2e8f0;
  --radius: 12px;
  --radius-lg: 20px;
  --nav-h: 72px;
  --font: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --display: "Source Serif 4", "Georgia", serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --shadow-sm: 0 1px 3px rgba(10, 37, 64, 0.06);
  --shadow-md: 0 8px 32px rgba(10, 37, 64, 0.08);
  --shadow-lg: 0 20px 60px rgba(10, 37, 64, 0.1);
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

*, *::before, *::after { box-sizing: border-box; }
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--white);
  line-height: 1.65;
  overflow-x: hidden;
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* Background */
.trust-bg {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(ellipse 60% 50% at 90% 0%, var(--blue-glow), transparent),
    radial-gradient(ellipse 50% 40% at 0% 100%, rgba(10, 37, 64, 0.04), transparent),
    linear-gradient(180deg, var(--white) 0%, var(--silver) 100%);
}
#trust-canvas {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.4;
}
.bg-grid-light {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(10, 37, 64, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(10, 37, 64, 0.03) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 20%, #000 10%, transparent 70%);
}

.container {
  width: min(1200px, calc(100% - 40px));
  margin: 0 auto;
}

/* Header */
.trust-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  min-height: calc(var(--nav-h) + var(--safe-top));
  padding-top: var(--safe-top);
  background: rgba(255, 255, 255, 0.88);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(16px) saturate(1.2);
  transition: box-shadow 0.3s, background 0.3s;
}
.trust-header.scrolled {
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow-sm);
}
.trust-nav {
  height: var(--nav-h);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 16px;
}
.trust-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1rem;
  color: var(--navy);
  letter-spacing: -0.02em;
  flex-shrink: 0;
}
.trust-brand img {
  width: 38px;
  height: 38px;
  border-radius: 10px;
}
.trust-nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
  overflow-x: auto;
  scrollbar-width: none;
}
.trust-nav-links::-webkit-scrollbar { display: none; }
.trust-nav-links a {
  padding: 8px 12px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--muted);
  border-radius: 8px;
  white-space: nowrap;
  transition: color 0.2s, background 0.2s;
}
.trust-nav-links a:hover,
.trust-nav-links a.active {
  color: var(--navy);
  background: var(--blue-light);
}
.trust-nav-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.language-select {
  padding: 7px 10px;
  font-size: 0.78rem;
  font-family: var(--font);
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--white);
  color: var(--text);
  cursor: pointer;
}
.trust-nav-cta {
  padding: 9px 16px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--white);
  background: var(--navy);
  border-radius: 8px;
  transition: background 0.2s, transform 0.2s;
}
.trust-nav-cta:hover { background: var(--navy-mid); }
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
}
.mobile-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--navy);
  border-radius: 1px;
  transition: transform 0.3s, opacity 0.3s;
}
body.menu-open .mobile-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
body.menu-open .mobile-toggle span:nth-child(2) { opacity: 0; }
body.menu-open .mobile-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 199;
  visibility: hidden;
  opacity: 0;
  transition: visibility 0.3s, opacity 0.3s;
}
.mobile-menu[aria-hidden="false"] {
  visibility: visible;
  opacity: 1;
}
.mobile-menu-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(10, 37, 64, 0.4);
}
.mobile-menu-panel {
  position: absolute;
  top: 0;
  right: 0;
  width: min(320px, 90vw);
  height: 100%;
  background: var(--white);
  box-shadow: var(--shadow-lg);
  transform: translateX(100%);
  transition: transform 0.3s;
  overflow-y: auto;
  padding-top: calc(var(--nav-h) + var(--safe-top));
}
.mobile-menu[aria-hidden="false"] .mobile-menu-panel { transform: translateX(0); }
.mobile-menu-inner {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.mobile-menu-inner a {
  padding: 12px 16px;
  font-weight: 500;
  color: var(--text);
  border-radius: 8px;
}
.mobile-menu-inner a:hover { background: var(--silver); }
.mobile-menu-inner label {
  margin-top: 16px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--muted);
}
.mobile-menu-inner .language-select { width: 100%; margin-top: 8px; }

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--display);
  color: var(--navy);
  line-height: 1.2;
  letter-spacing: -0.02em;
}
h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); font-weight: 600; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 600; }
h3 { font-size: 1.15rem; font-weight: 600; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--blue);
  margin-bottom: 16px;
}
.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--blue);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}
.lead {
  font-size: 1.15rem;
  color: var(--text);
  max-width: 640px;
  line-height: 1.7;
}
.section-text {
  color: var(--muted);
  max-width: 680px;
  font-size: 1.02rem;
}
.kicker {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--blue);
  margin-bottom: 12px;
}

/* Sections */
.section {
  padding: 96px 0;
}
.section-sm { padding: 64px 0; }
.section-head {
  margin-bottom: 48px;
}
.section-head.center {
  text-align: center;
}
.section-head.center .section-text,
.section-head.center .lead {
  margin-left: auto;
  margin-right: auto;
}
main { padding-top: calc(var(--nav-h) + var(--safe-top)); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s;
}
.btn.primary {
  background: var(--blue);
  color: var(--white);
  border-color: var(--blue);
}
.btn.primary:hover {
  background: var(--blue-bright);
  box-shadow: 0 4px 16px var(--blue-glow);
}
.btn.secondary {
  background: var(--white);
  color: var(--navy);
  border-color: var(--border);
}
.btn.secondary:hover {
  border-color: var(--navy);
  background: var(--silver);
}
.btn.navy {
  background: var(--navy);
  color: var(--white);
}
.btn.navy:hover { background: var(--navy-mid); }
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* Hero */
.hero-trust {
  padding: 80px 0 96px;
  position: relative;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.hero-visual {
  position: relative;
  aspect-ratio: 1;
  max-width: 520px;
  margin: 0 auto;
}
.hero-arch-svg {
  width: 100%;
  height: 100%;
}
.stage-notice {
  margin-top: 32px;
  padding: 16px 20px;
  background: var(--blue-light);
  border-left: 3px solid var(--blue);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 0.92rem;
  color: var(--navy-mid);
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.mission-card,
.trust-card,
.module-card-trust,
.use-case-card,
.eco-card {
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
}
.mission-card:hover,
.trust-card:hover,
.module-card-trust:hover,
.use-case-card:hover,
.eco-card:hover {
  border-color: var(--blue);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--blue-light);
  border-radius: 12px;
  margin-bottom: 16px;
  color: var(--blue);
  font-size: 1.3rem;
}
.mission-card h3,
.trust-card h3 { margin: 0 0 8px; }
.mission-card p,
.trust-card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--muted);
}

/* Architecture stack */
.stack-diagram {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: 720px;
  margin: 0 auto;
}
.stack-layer {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 20px;
  align-items: center;
  padding: 20px 24px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: border-color 0.3s, transform 0.3s;
  position: relative;
}
.stack-layer::before {
  content: attr(data-num);
  position: absolute;
  left: -12px;
  top: 50%;
  transform: translateY(-50%);
  width: 24px;
  height: 24px;
  background: var(--blue);
  color: var(--white);
  font-size: 0.7rem;
  font-weight: 700;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.stack-layer:hover {
  border-color: var(--blue);
  transform: translateX(4px);
}
.stack-layer-num {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--blue);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.stack-layer h3 {
  margin: 0 0 4px;
  font-family: var(--font);
  font-size: 1.05rem;
}
.stack-layer p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--muted);
}
.stack-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

/* Platform diagram */
.platform-flow {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  padding: 40px;
  background: var(--silver);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}
.flow-node {
  padding: 12px 18px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--navy);
  transition: all 0.2s;
}
.flow-node.core {
  background: var(--navy);
  color: var(--white);
  border-color: var(--navy);
}
.flow-node:hover {
  border-color: var(--blue);
  box-shadow: var(--shadow-sm);
}
.flow-arrow {
  color: var(--gray-400);
  font-size: 1rem;
  align-self: center;
}

/* Module cards extended */
.module-card-trust .module-stage {
  display: inline-block;
  margin-top: 12px;
  padding: 4px 10px;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--silver);
  color: var(--muted);
  border-radius: 999px;
}
.module-card-trust .module-stage.dev {
  background: var(--blue-light);
  color: var(--blue);
}
.module-meta {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
}
.module-meta dt {
  font-weight: 600;
  color: var(--navy);
  margin-top: 8px;
}
.module-meta dt:first-child { margin-top: 0; }
.module-meta dd {
  margin: 4px 0 0;
  color: var(--muted);
}

/* Timeline / Roadmap */
.roadmap-timeline {
  position: relative;
  padding-left: 32px;
}
.roadmap-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--border);
}
.roadmap-item {
  position: relative;
  padding-bottom: 40px;
}
.roadmap-item::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 6px;
  width: 12px;
  height: 12px;
  background: var(--white);
  border: 3px solid var(--blue);
  border-radius: 50%;
}
.roadmap-item.current::before {
  background: var(--blue);
}
.roadmap-year {
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--blue);
  margin-bottom: 4px;
}
.roadmap-item h3 { margin: 0 0 8px; }
.roadmap-item p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

/* Use cases */
.use-case-card h3 { margin: 0 0 8px; }
.use-case-card p { margin: 0; font-size: 0.9rem; color: var(--muted); }
.use-case-tag {
  display: inline-block;
  margin-bottom: 12px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--blue);
}

/* Ecosystem */
.eco-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.eco-card h3 { margin: 0 0 8px; }
.eco-card p { margin: 0; font-size: 0.9rem; color: var(--muted); }
.eco-card a.eco-link {
  display: inline-block;
  margin-top: 12px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--blue);
}
.trust-layer-band {
  padding: 48px;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-mid) 100%);
  border-radius: var(--radius-lg);
  color: var(--white);
  text-align: center;
}
.trust-layer-band h2 { color: var(--white); margin-bottom: 12px; }
.trust-layer-band p { color: rgba(255,255,255,0.8); max-width: 600px; margin: 0 auto; }

/* Token section (secondary) */
.token-section {
  background: var(--silver);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.token-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}
.token-card {
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.token-card h4 {
  margin: 0 0 8px;
  font-family: var(--font);
  font-size: 0.95rem;
  color: var(--navy);
}
.token-card p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--muted);
}
.contract-mono {
  font-family: var(--mono);
  font-size: 0.8rem;
}

/* Contact form */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 6px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  font-family: var(--font);
  font-size: 0.92rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--white);
  color: var(--text);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px var(--blue-glow);
}
.form-group textarea { min-height: 140px; resize: vertical; }
.contact-info-card {
  padding: 24px;
  background: var(--silver);
  border-radius: var(--radius);
  margin-bottom: 16px;
}
.contact-info-card strong {
  display: block;
  color: var(--navy);
  margin-bottom: 4px;
}
.contact-info-card a {
  color: var(--blue);
  font-size: 0.9rem;
}

/* Page hero (inner pages) */
.page-hero {
  padding: 64px 0 48px;
  background: var(--silver);
  border-bottom: 1px solid var(--border);
}
.page-hero h1 { margin: 0 0 16px; }
.page-hero .lead { margin: 0; }

/* Challenge list */
.challenge-list {
  display: grid;
  gap: 16px;
}
.challenge-item {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 16px;
  padding: 20px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.challenge-num {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--blue-light);
  color: var(--blue);
  font-weight: 700;
  border-radius: 10px;
}

/* Developers */
.dev-status {
  padding: 24px;
  background: var(--blue-light);
  border-radius: var(--radius);
  border: 1px solid rgba(0, 102, 204, 0.15);
}
.dev-status strong {
  display: block;
  color: var(--navy);
  margin-bottom: 8px;
}

/* Footer */
.trust-footer {
  padding: 48px 0 calc(32px + var(--safe-bottom));
  background: var(--navy);
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.85rem;
}
.footer-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-links a {
  color: rgba(255, 255, 255, 0.65);
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--white); }

/* Reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .pulse-dot { animation: none; }
}

/* Band sections */
.band-silver {
  background: var(--silver);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.band-navy {
  background: linear-gradient(135deg, var(--navy), var(--navy-mid));
  color: var(--white);
}
.band-navy h2, .band-navy h3 { color: var(--white); }
.band-navy .section-text { color: rgba(255,255,255,0.75); }

/* Ecosystem modules preserved */
.eco-module-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}
.eco-module-link {
  display: block;
  padding: 16px 18px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.eco-module-link:hover {
  border-color: var(--blue);
  box-shadow: var(--shadow-sm);
}
.eco-module-link strong {
  display: block;
  font-size: 0.9rem;
  color: var(--navy);
  margin-bottom: 4px;
}
.eco-module-link span {
  font-size: 0.8rem;
  color: var(--muted);
}
.eco-category {
  margin-bottom: 40px;
}
.eco-category h3 {
  font-family: var(--font);
  font-size: 1rem;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--blue-light);
}

/* Responsive */
@media (max-width: 1024px) {
  .hero-grid,
  .stack-layout,
  .contact-layout { grid-template-columns: 1fr; }
  .hero-visual { order: -1; max-width: 400px; }
  .trust-nav-links,
  .language-wrap-desktop,
  .trust-nav-cta-desktop { display: none; }
  .mobile-toggle { display: flex; }
}
@media (max-width: 640px) {
  .section { padding: 64px 0; }
  .hero-trust { padding: 48px 0 64px; }
  .stack-layer { grid-template-columns: 1fr; gap: 8px; }
  .stack-layer::before { display: none; }
}