/* ====================================================================
   Fidua Wire Freeze Simulator, v1
   Futuristic dark theme on the Fidua navy + gold brand palette.
   No external CDN, no Google Fonts. System stack + future self-hosted woff2.
   ==================================================================== */

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

:root {
  /* Brand palette, dark variant */
  --bg-deep:        #04090f;
  --bg-base:        #06101e;
  --bg-elev-1:      #0a1628;
  --bg-elev-2:      #0e1d33;
  --bg-card:        rgba(14, 29, 51, 0.55);
  --bg-card-hover:  rgba(14, 29, 51, 0.75);

  --text-primary:   #e8ecf3;
  --text-secondary: #a4afc1;
  --text-tertiary:  #6c788c;

  --gold:           #c4a35a;
  --gold-bright:    #e6c980;
  --gold-soft:      rgba(196, 163, 90, 0.55);
  --gold-glow:      rgba(196, 163, 90, 0.35);

  --green:          #4caf76;
  --green-soft:     rgba(76, 175, 118, 0.18);
  --green-glow:     rgba(76, 175, 118, 0.45);
  --amber:          #f0b246;
  --amber-soft:     rgba(240, 178, 70, 0.18);
  --amber-glow:     rgba(240, 178, 70, 0.45);
  --red:            #ef6b6b;
  --red-soft:       rgba(239, 107, 107, 0.18);
  --red-glow:       rgba(239, 107, 107, 0.45);

  --border:         rgba(196, 163, 90, 0.16);
  --border-strong:  rgba(196, 163, 90, 0.32);
  --grid:           rgba(196, 163, 90, 0.045);

  /* Typography */
  --f-head: 'Lato', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, system-ui, sans-serif;
  --f-body: 'Source Serif Pro', Georgia, 'Times New Roman', serif;
  --f-mono: 'JetBrains Mono', 'IBM Plex Mono', Menlo, Consolas, monospace;

  /* Spacing */
  --s-1: 4px;  --s-2: 8px;  --s-3: 12px; --s-4: 16px;
  --s-5: 24px; --s-6: 32px; --s-7: 48px; --s-8: 64px; --s-9: 96px;

  /* Radius */
  --r-sm: 8px;  --r-md: 14px; --r-lg: 22px; --r-pill: 999px;

  /* Motion */
  --t-fast: 160ms cubic-bezier(0.4, 0, 0.2, 1);
  --t-base: 320ms cubic-bezier(0.4, 0, 0.2, 1);
  --t-slow: 720ms cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
  margin: 0;
  background: var(--bg-deep);
  color: var(--text-primary);
  font: 400 16px/1.6 var(--f-body);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection { background: var(--gold); color: var(--bg-deep); }

/* ============== Background layers ============== */

.bg-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.bg-grid {
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 96px 96px;
  background-position: -1px -1px;
  mask-image: radial-gradient(ellipse at center, black 0%, black 60%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 0%, black 60%, transparent 100%);
  animation: gridDrift 28s linear infinite;
}

.bg-glow {
  background:
    radial-gradient(900px circle at 15% 10%, rgba(196, 163, 90, 0.10), transparent 55%),
    radial-gradient(700px circle at 85% 70%, rgba(120, 130, 200, 0.06), transparent 50%),
    radial-gradient(1200px circle at 50% 110%, rgba(196, 163, 90, 0.07), transparent 60%);
}

.bg-noise {
  opacity: 0.03;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  mix-blend-mode: overlay;
}

@keyframes gridDrift {
  from { background-position: -1px -1px; }
  to   { background-position: -97px -97px; }
}

/* ============== Layout primitives ============== */

main { position: relative; z-index: 1; }

.site-header {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-5);
  padding: var(--s-5) var(--s-7);
  max-width: 1280px;
  margin: 0 auto;
}

.brand { display: flex; align-items: center; gap: var(--s-3); text-decoration: none; color: var(--text-primary); }
.brand-mark { height: 36px; width: auto; display: block; filter: drop-shadow(0 0 10px var(--gold-glow)); }
.brand-wordmark {
  font: 700 22px/1 var(--f-head);
  letter-spacing: 0.3em;
  background: linear-gradient(180deg, var(--text-primary), var(--gold-bright));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.site-nav { display: flex; align-items: center; gap: var(--s-5); }
.site-nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font: 500 14px/1 var(--f-head);
  letter-spacing: 0.05em;
  transition: color var(--t-fast);
}
.site-nav-link:hover { color: var(--gold-bright); }

@media (max-width: 720px) {
  .site-header { padding: var(--s-4) var(--s-4); }
  .site-nav { gap: var(--s-3); }
  .site-nav-link:not(.btn) { display: none; }
}

/* ============== Buttons ============== */

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-3);
  border: 0;
  cursor: pointer;
  font: 600 15px/1 var(--f-head);
  letter-spacing: 0.02em;
  padding: 14px 26px;
  transition: transform var(--t-fast), box-shadow var(--t-fast), background var(--t-fast);
  text-decoration: none;
  white-space: nowrap;
}
.btn-pill { border-radius: var(--r-pill); }

.btn-primary {
  color: #1a1108;
  background: linear-gradient(180deg, var(--gold-bright), var(--gold));
  box-shadow:
    0 10px 30px -10px var(--gold-glow),
    inset 0 1px 0 rgba(255, 255, 255, 0.25),
    inset 0 -2px 0 rgba(120, 88, 30, 0.25);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow:
    0 18px 40px -10px var(--gold-glow),
    0 0 0 1px var(--gold-soft),
    inset 0 1px 0 rgba(255, 255, 255, 0.3),
    inset 0 -2px 0 rgba(120, 88, 30, 0.25);
}
.btn-primary:active { transform: translateY(0); }

.btn-ghost {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
  border: 1px solid var(--border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.08); border-color: var(--border-strong); }

.btn-cta { padding: 11px 18px; font-size: 13px; }
.btn-hero { padding: 18px 32px; font-size: 16px; margin-top: var(--s-6); }
.btn-cta-large { padding: 18px 32px; font-size: 16px; }

.btn-arrow { font-size: 18px; transition: transform var(--t-fast); }
.btn:hover .btn-arrow { transform: translateX(4px); }

.btn-simulate { width: 100%; padding: 18px 28px; font-size: 16px; margin-top: var(--s-5); }

.btn-glow {
  position: absolute; inset: -1px;
  border-radius: inherit;
  background: radial-gradient(circle at 50% 100%, var(--gold-glow), transparent 60%);
  opacity: 0;
  transition: opacity var(--t-base);
  pointer-events: none;
}
.btn-simulate:hover .btn-glow { opacity: 0.9; }

/* ============== Hero ============== */

.hero {
  position: relative;
  max-width: 1100px;
  margin: 0 auto;
  padding: var(--s-9) var(--s-5) var(--s-8);
  text-align: center;
}

.hero-decoration {
  position: relative;
  height: 220px;
  margin-bottom: var(--s-6);
  pointer-events: none;
}

@media (max-width: 760px) {
  .hero-decoration { height: 280px; }
}

.float-card {
  position: absolute;
  top: 0;
  width: min(340px, 84vw);
  padding: var(--s-4);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow:
    0 20px 60px -20px rgba(0, 0, 0, 0.6),
    inset 0 1px 0 rgba(255, 255, 255, 0.04);
  animation: floatBob 7s ease-in-out infinite;
}

.float-card-left  { left: 0;  transform: rotate(-2.4deg) translateY(8px); }
.float-card-right { right: 0; top: 28px; transform: rotate(1.8deg); animation-delay: -3.5s; }

@media (max-width: 880px) {
  .float-card-left  { left: 50%; margin-left: -260px; transform: rotate(-3deg) translateY(8px) scale(0.85); }
  .float-card-right { right: auto; left: 50%; margin-left: 0; top: 130px; transform: rotate(2deg) scale(0.85); }
}
@media (max-width: 560px) {
  .float-card-left  { margin-left: -210px; }
  .float-card-right { margin-left: -40px; }
}

@keyframes floatBob {
  0%, 100% { translate: 0 0; }
  50%      { translate: 0 -8px; }
}

.float-card-head {
  display: flex;
  align-items: center;
  gap: var(--s-2);
  padding-bottom: var(--s-3);
  margin-bottom: var(--s-3);
  border-bottom: 1px solid var(--border);
}
.float-card-icon {
  width: 28px; height: 28px;
  border-radius: var(--r-sm);
  background: linear-gradient(135deg, var(--gold), var(--gold-bright));
  flex: 0 0 28px;
  position: relative;
}
.float-card-icon::before {
  content: '';
  position: absolute; inset: 6px;
  background: var(--bg-deep);
  border-radius: 3px;
  clip-path: polygon(50% 0, 100% 30%, 100% 80%, 50% 100%, 0 80%, 0 30%);
}
.float-card-icon.icon-lock::before {
  clip-path: polygon(30% 40%, 30% 25%, 50% 15%, 70% 25%, 70% 40%, 80% 40%, 80% 90%, 20% 90%, 20% 40%);
}
.float-card-title {
  flex: 1;
  font: 600 13px/1.2 var(--f-head);
  color: var(--text-primary);
  letter-spacing: 0.04em;
}
.float-card-status {
  font: 500 10px/1 var(--f-head);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  padding: 4px 8px;
  border-radius: var(--r-pill);
}
.status-amber { background: var(--amber-soft); color: var(--amber); }
.status-green { background: var(--green-soft); color: var(--green); }
.status-green::before {
  content: '';
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--green);
  margin-right: 6px;
  box-shadow: 0 0 8px var(--green-glow);
  animation: pulse 1.6s ease-in-out infinite;
  vertical-align: middle;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.45; }
}

.float-card-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 0;
  font: 400 12px/1.4 var(--f-mono);
  color: var(--text-secondary);
}
.float-card-row + .float-card-row { border-top: 1px dashed var(--border); }
.chip {
  font: 600 10px/1 var(--f-head);
  letter-spacing: 0.04em;
  padding: 4px 8px;
  border-radius: var(--r-sm);
}
.chip-amber { background: var(--amber-soft); color: var(--amber); }
.chip-red   { background: var(--red-soft);   color: var(--red); }
.chip-green { background: var(--green-soft); color: var(--green); }

.float-card-meta {
  margin-top: var(--s-3);
  padding-top: var(--s-3);
  border-top: 1px solid var(--border);
  font: 400 11px/1.4 var(--f-mono);
  color: var(--text-tertiary);
  letter-spacing: 0.04em;
}

.float-card-code {
  font: 400 12px/1.6 var(--f-mono);
  color: var(--text-secondary);
  margin: 0;
  white-space: pre-wrap;
}
.code-op  { color: var(--gold); }
.code-cmd { color: var(--text-primary); }
.code-ok  { color: var(--green); }

/* pill-tag */
.pill-tag {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--s-2);
  padding: 8px 16px;
  background: rgba(196, 163, 90, 0.08);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-pill);
  margin-bottom: var(--s-5);
  font: 600 11px/1 var(--f-head);
  letter-spacing: 0.2em;
  color: var(--gold-bright);
  text-transform: uppercase;
  animation: pillFadeIn 1.2s var(--t-slow) backwards;
}
.pill-sep { color: var(--gold-soft); }

@keyframes pillFadeIn {
  from { opacity: 0; translate: 0 -8px; }
  to   { opacity: 1; translate: 0 0; }
}

.hero-title {
  font: 700 clamp(38px, 6.4vw, 72px)/1.05 var(--f-head);
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin: 0 0 var(--s-5);
  animation: heroIn 1s var(--t-slow) backwards;
  animation-delay: 0.1s;
}
.grad-text {
  background: linear-gradient(180deg, var(--gold-bright) 0%, var(--gold) 60%, var(--gold-soft) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-lede {
  font: 400 clamp(16px, 1.6vw, 19px)/1.6 var(--f-body);
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto;
  animation: heroIn 1s var(--t-slow) backwards;
  animation-delay: 0.25s;
}

@keyframes heroIn {
  from { opacity: 0; translate: 0 16px; }
  to   { opacity: 1; translate: 0 0; }
}

/* ============== Card & sections ============== */

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: var(--s-7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow:
    0 30px 80px -30px rgba(0, 0, 0, 0.7),
    inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

@media (max-width: 560px) {
  .card { padding: var(--s-5); }
}

.card-header { margin-bottom: var(--s-5); }
.card-title {
  font: 600 22px/1.2 var(--f-head);
  color: var(--text-primary);
  letter-spacing: -0.01em;
  margin: 0 0 var(--s-2);
}
.card-subtitle {
  font: 400 14px/1.5 var(--f-body);
  color: var(--text-secondary);
  margin: 0;
}

.simulator {
  max-width: 720px;
  margin: 0 auto var(--s-8);
  padding: 0 var(--s-5);
  scroll-margin-top: clamp(56px, 18vh, 200px);
}

/* ============== Form fields ============== */

.sim-form { display: flex; flex-direction: column; gap: var(--s-6); }

.field { display: flex; flex-direction: column; gap: var(--s-3); }

.field-label {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--s-3);
  font: 600 13px/1 var(--f-head);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.field-hint {
  font: 600 16px/1 var(--f-mono);
  color: var(--gold-bright);
  letter-spacing: 0;
  text-transform: none;
}

/* Range slider */
.range {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  background: linear-gradient(90deg, var(--gold) 0% var(--fill, 25%), rgba(255,255,255,0.08) var(--fill, 25%) 100%);
  border-radius: 3px;
  outline: none;
  cursor: pointer;
}
.range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: linear-gradient(180deg, var(--gold-bright), var(--gold));
  border: 2px solid var(--bg-base);
  box-shadow: 0 0 0 1px var(--gold), 0 6px 16px -4px var(--gold-glow);
  cursor: grab;
  transition: transform var(--t-fast), box-shadow var(--t-fast);
}
.range::-webkit-slider-thumb:active { cursor: grabbing; transform: scale(1.12); }
.range::-moz-range-thumb {
  width: 22px; height: 22px;
  border-radius: 50%;
  background: linear-gradient(180deg, var(--gold-bright), var(--gold));
  border: 2px solid var(--bg-base);
  box-shadow: 0 0 0 1px var(--gold), 0 6px 16px -4px var(--gold-glow);
  cursor: grab;
}

.field-scale {
  display: flex;
  justify-content: space-between;
  font: 500 10px/1 var(--f-mono);
  color: var(--text-tertiary);
  letter-spacing: 0.05em;
}

/* Select */
.select {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  color: var(--text-primary);
  font: 500 15px/1 var(--f-head);
  letter-spacing: 0.01em;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path fill='%23c4a35a' d='M6 8 0 0h12z'/></svg>");
  background-repeat: no-repeat;
  background-position: right 16px center;
  background-size: 10px 6px;
  padding-right: 36px;
  transition: border-color var(--t-fast), background var(--t-fast);
}
.select:hover { border-color: var(--border-strong); background-color: rgba(255, 255, 255, 0.05); }
.select:focus { outline: none; border-color: var(--gold); box-shadow: 0 0 0 3px var(--gold-glow); }
.select option { background: var(--bg-elev-1); color: var(--text-primary); }

/* ============== Result ============== */

.result {
  max-width: 720px;
  margin: 0 auto var(--s-8);
  padding: 0 var(--s-5);
  display: flex;
  flex-direction: column;
  gap: var(--s-5);
  scroll-margin-top: clamp(48px, 10vh, 120px);
  animation: resultIn 0.8s var(--t-slow) backwards;
}

@keyframes resultIn {
  from { opacity: 0; translate: 0 24px; }
  to   { opacity: 1; translate: 0 0; }
}

.result[hidden] { display: none; }

.verdict-badge {
  display: flex;
  align-items: center;
  gap: var(--s-5);
  padding: var(--s-5);
  border-radius: var(--r-md);
  background: var(--green-soft);
  border: 1px solid currentColor;
  color: var(--green);
  margin-bottom: var(--s-5);
}
.verdict-badge[data-verdict="amber"] { background: var(--amber-soft); color: var(--amber); }
.verdict-badge[data-verdict="red"]   { background: var(--red-soft);   color: var(--red); }

.verdict-dot {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 0 5px rgba(255, 255, 255, 0.05), 0 0 24px currentColor;
  flex: 0 0 44px;
  animation: pulse 2s ease-in-out infinite;
}

.verdict-text { flex: 1; min-width: 0; }
.verdict-label {
  font: 700 22px/1.2 var(--f-head);
  color: var(--text-primary);
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}
.verdict-sub {
  font: 400 14px/1.5 var(--f-body);
  color: var(--text-secondary);
}

.verdict-score { text-align: right; }
.verdict-score-num {
  font: 700 32px/1 var(--f-mono);
  color: var(--text-primary);
}
.verdict-score-label {
  font: 500 10px/1 var(--f-head);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-top: 4px;
}

.tripwire-list { display: flex; flex-direction: column; gap: var(--s-3); }
.tripwire {
  display: flex;
  gap: var(--s-4);
  padding: var(--s-4);
  background: rgba(255, 255, 255, 0.02);
  border-left: 3px solid var(--border-strong);
  border-radius: var(--r-sm);
  transition: background var(--t-fast);
}
.tripwire.fired { border-left-color: currentColor; background: rgba(239, 107, 107, 0.04); }
.tripwire.fired[data-tier="amber"] { background: rgba(240, 178, 70, 0.04); color: var(--amber); }
.tripwire.fired[data-tier="red"]   { background: rgba(239, 107, 107, 0.04); color: var(--red); }
.tripwire:not(.fired) { color: var(--text-tertiary); }

.tripwire-head {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  margin-bottom: var(--s-2);
}
.tripwire-icon {
  width: 18px; height: 18px;
  border-radius: 50%;
  background: currentColor;
  flex: 0 0 18px;
  opacity: 0.85;
}
.tripwire:not(.fired) .tripwire-icon { background: transparent; border: 1.5px solid currentColor; }
.tripwire-name {
  font: 600 14px/1 var(--f-head);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: currentColor;
}
.tripwire-weight {
  margin-left: auto;
  font: 600 12px/1 var(--f-mono);
  color: var(--text-tertiary);
}
.tripwire-body {
  font: 400 14px/1.5 var(--f-body);
  color: var(--text-secondary);
  padding-left: 30px;
}

.mitigation-list {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--s-5);
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
}
.mitigation-list li {
  font: 400 15px/1.5 var(--f-body);
  color: var(--text-primary);
  padding-left: 30px;
  position: relative;
}
.check {
  position: absolute;
  left: 0;
  top: 2px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px; height: 20px;
  background: var(--green-soft);
  color: var(--green);
  border-radius: 50%;
  font: 700 11px/1 var(--f-head);
}

.mitigation-outcome {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  padding: var(--s-4) var(--s-5);
  background: var(--green-soft);
  border-radius: var(--r-md);
  border: 1px solid rgba(76, 175, 118, 0.32);
  color: var(--text-primary);
  font: 400 15px/1.4 var(--f-body);
}
.outcome-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 12px var(--green-glow);
  flex: 0 0 10px;
  animation: pulse 1.6s ease-in-out infinite;
}

.result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
  margin-top: var(--s-6);
}

/* ============== How it works ============== */

.how,
.about {
  max-width: 1100px;
  margin: var(--s-9) auto;
  padding: 0 var(--s-5);
}
.section-heading {
  font: 700 clamp(28px, 4vw, 40px)/1.2 var(--f-head);
  text-align: center;
  margin: 0 0 var(--s-7);
  letter-spacing: -0.01em;
}
.how-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--s-5);
}
.how-step {
  padding: var(--s-6);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: transform var(--t-base), border-color var(--t-base), background var(--t-base);
}
.how-step:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
  background: var(--bg-card-hover);
}
.how-step-num {
  font: 700 12px/1 var(--f-mono);
  letter-spacing: 0.3em;
  color: var(--gold);
  margin-bottom: var(--s-3);
}
.how-step-title {
  font: 600 18px/1.3 var(--f-head);
  color: var(--text-primary);
  margin: 0 0 var(--s-3);
  letter-spacing: -0.01em;
}
.how-step p {
  font: 400 14px/1.6 var(--f-body);
  color: var(--text-secondary);
  margin: 0;
}

/* ============== CTA ============== */

.cta {
  max-width: 920px;
  margin: var(--s-9) auto;
  padding: 0 var(--s-5);
}
.cta-card {
  text-align: center;
  background: linear-gradient(180deg, rgba(196, 163, 90, 0.12), rgba(14, 29, 51, 0.6));
  border: 1px solid var(--border-strong);
  padding: var(--s-8) var(--s-6);
  position: relative;
  overflow: hidden;
}
.cta-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, var(--gold-glow), transparent 60%);
  opacity: 0.4;
  pointer-events: none;
}
.cta-title {
  font: 700 clamp(28px, 4vw, 38px)/1.2 var(--f-head);
  letter-spacing: -0.01em;
  margin: 0 0 var(--s-3);
}
.cta-lede {
  font: 400 17px/1.6 var(--f-body);
  color: var(--text-secondary);
  max-width: 540px;
  margin: 0 auto var(--s-6);
  position: relative;
  z-index: 1;
}

/* ============== Footer ============== */

.site-footer {
  max-width: 1100px;
  margin: 0 auto;
  padding: var(--s-7) var(--s-5);
  border-top: 1px solid var(--border);
  position: relative;
  z-index: 1;
}
.footer-disclaimer {
  font: 400 13px/1.6 var(--f-body);
  color: var(--text-tertiary);
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--s-4);
}
.footer-meta {
  text-align: center;
  font: 500 12px/1 var(--f-mono);
  color: var(--text-tertiary);
  letter-spacing: 0.05em;
}
.footer-sep { padding: 0 8px; opacity: 0.5; }

/* ============== Simulation animation ============== */

.sim-animation {
  display: flex;
  flex-direction: column;
  gap: var(--s-6);
  padding: var(--s-7);
  position: relative;
  overflow: hidden;
  min-height: 520px;
}

.sim-animation::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 30%, rgba(196, 163, 90, 0.10), transparent 60%);
  pointer-events: none;
  animation: ambientPulse 6s ease-in-out infinite;
}

@keyframes ambientPulse {
  0%, 100% { opacity: 0.6; }
  50%      { opacity: 1; }
}

.sim-anim-head { position: relative; z-index: 1; }

.sim-anim-meta {
  display: inline-flex;
  align-items: center;
  gap: var(--s-3);
  padding: 6px 14px;
  background: rgba(196, 163, 90, 0.10);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-pill);
  margin-bottom: var(--s-4);
  font: 600 11px/1 var(--f-head);
  letter-spacing: 0.18em;
  color: var(--gold-bright);
  text-transform: uppercase;
}
.sim-anim-pulse {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 10px var(--green-glow);
  animation: pulse 1.4s ease-in-out infinite;
}
.sim-anim-live { color: var(--green); }
.sim-anim-stepof { color: var(--text-secondary); }

.sim-anim-title {
  font: 700 clamp(24px, 3.4vw, 34px)/1.15 var(--f-head);
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin: 0 0 var(--s-3);
  transition: opacity var(--t-base);
}

.sim-anim-detail {
  font: 400 16px/1.55 var(--f-body);
  color: var(--text-secondary);
  margin: 0 0 var(--s-3);
  max-width: 540px;
  transition: opacity var(--t-base);
}

.sim-anim-techhint {
  font: 500 13px/1.4 var(--f-mono);
  letter-spacing: 0.02em;
  color: var(--gold-soft);
  margin: 0;
  transition: opacity var(--t-base);
}
.tech-prefix { color: var(--gold); margin-right: 6px; }

.sim-animation.swap .sim-anim-title,
.sim-animation.swap .sim-anim-detail,
.sim-animation.swap .sim-anim-techhint { opacity: 0; }

/* Stage area */

.sim-anim-stage-wrap {
  position: relative;
  height: 200px;
  display: grid;
  place-items: center;
  z-index: 1;
}

.stage {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 320ms cubic-bezier(0.4, 0, 0.2, 1);
}
.stage.active { opacity: 1; }

/* Stage 1: receive (wire arriving from showroom) */

.stage-receive { display: grid !important; place-items: center; }
.rx-row {
  display: grid;
  grid-template-columns: 92px 1fr 92px;
  align-items: center;
  gap: var(--s-3);
  width: min(560px, 100%);
  padding: 0 var(--s-4);
}

/* Showroom (storefront) */
.rx-source { position: relative; height: 110px; display: grid; place-items: center; }
.rx-source-roof {
  width: 78px; height: 18px;
  background: linear-gradient(180deg, var(--gold), var(--gold-bright));
  clip-path: polygon(0 100%, 12% 0, 88% 0, 100% 100%);
  filter: drop-shadow(0 4px 14px var(--gold-glow));
}
.rx-source-body {
  width: 64px; height: 56px;
  margin-top: -2px;
  background: linear-gradient(180deg, rgba(14, 29, 51, 0.95), rgba(6, 16, 30, 0.95));
  border: 1.4px solid var(--gold-soft);
  border-radius: 3px;
  position: relative;
}
.rx-source-door {
  position: absolute;
  bottom: 0; left: 50%; transform: translateX(-50%);
  width: 14px; height: 22px;
  background: var(--gold);
  border-radius: 7px 7px 0 0;
  opacity: 0.7;
}
.rx-source-win {
  position: absolute;
  top: 6px; left: 50%; transform: translateX(-50%);
  width: 28px; height: 16px;
  background: rgba(196, 163, 90, 0.18);
  border: 1px solid var(--gold-soft);
  border-radius: 2px;
}
.rx-source-label {
  position: absolute;
  bottom: -22px;
  font: 600 10px/1 var(--f-head);
  letter-spacing: 0.15em;
  color: var(--text-tertiary);
  text-transform: uppercase;
}

/* Wire / data link */
.rx-link {
  position: relative;
  height: 110px;
  display: grid;
  place-items: center;
}
.rx-track {
  width: 100%;
  height: 2px;
  background:
    repeating-linear-gradient(90deg,
      var(--gold-soft) 0,
      var(--gold-soft) 4px,
      transparent 4px,
      transparent 10px);
  opacity: 0.4;
}
.rx-packet {
  position: absolute;
  top: 50%;
  left: 0;
  width: 10px; height: 10px;
  margin-top: -5px;
  border-radius: 50%;
  background: var(--gold-bright);
  box-shadow: 0 0 14px var(--gold-glow), 0 0 4px var(--gold);
  opacity: 0;
}
.stage-receive.active .rx-packet {
  animation: packetFly 1.7s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}
.stage-receive.active .p1 { animation-delay: 0s; }
.stage-receive.active .p2 { animation-delay: 0.4s; }
.stage-receive.active .p3 { animation-delay: 0.8s; }
@keyframes packetFly {
  0%   { left: 0%;   opacity: 0; transform: scale(0.6); }
  15%  { opacity: 1; transform: scale(1); }
  85%  { opacity: 1; transform: scale(1); }
  100% { left: 100%; opacity: 0; transform: scale(0.6); }
}

.rx-chips {
  position: absolute;
  top: 12px;
  left: 0; right: 0;
  display: flex;
  justify-content: space-around;
  pointer-events: none;
}
.rx-chip {
  font: 600 9px/1 var(--f-head);
  letter-spacing: 0.18em;
  color: var(--gold-bright);
  padding: 4px 8px;
  background: rgba(196, 163, 90, 0.10);
  border: 1px solid var(--gold-soft);
  border-radius: var(--r-pill);
  opacity: 0;
}
.stage-receive.active .rx-chip {
  animation: chipPop 1.4s ease-out forwards;
}
.stage-receive.active .c1 { animation-delay: 0.2s; }
.stage-receive.active .c2 { animation-delay: 0.7s; }
.stage-receive.active .c3 { animation-delay: 1.2s; }
@keyframes chipPop {
  0%  { opacity: 0; transform: translateY(8px) scale(0.9); }
  30% { opacity: 1; transform: translateY(0) scale(1); }
  100%{ opacity: 1; transform: translateY(0) scale(1); }
}

/* Fidua receiver target */
.rx-target {
  position: relative;
  height: 110px;
  display: grid;
  place-items: center;
}
.rx-target-ring {
  position: absolute;
  width: 80px; height: 80px;
  border-radius: 50%;
  border: 1.5px solid var(--gold-soft);
}
.rx-target-ring::after {
  content: '';
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  border: 1px solid var(--gold);
  opacity: 0;
}
.stage-receive.active .rx-target-ring::after {
  animation: targetSonar 1.7s ease-out infinite;
}
@keyframes targetSonar {
  0%   { transform: scale(0.85); opacity: 0.8; }
  100% { transform: scale(1.35); opacity: 0; }
}
.rx-target-core {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--gold-bright), var(--gold));
  box-shadow: 0 0 24px var(--gold-glow), inset 0 1px 0 rgba(255, 255, 255, 0.3);
  position: relative;
  z-index: 1;
}
.rx-target-core::after {
  content: '';
  position: absolute;
  inset: 30%;
  background: var(--bg-deep);
  border-radius: 50%;
}
.rx-target-label {
  position: absolute;
  bottom: -22px;
  font: 600 10px/1 var(--f-head);
  letter-spacing: 0.2em;
  color: var(--gold-bright);
  text-transform: uppercase;
}

/* Stage 2: bank scan */

.stage-scan {
  --line-y: 50%;
}
.scan-line {
  position: absolute;
  left: 12%;
  right: 12%;
  top: 50%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-soft) 20%, var(--gold-soft) 80%, transparent);
}
.bank-node {
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(14, 29, 51, 0.85);
  border: 1.5px solid var(--border-strong);
  display: grid;
  place-items: center;
  font: 700 12px/1 var(--f-head);
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  transition: all 250ms cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 2;
}
.bank-node.n1 { left: 20%; }
.bank-node.n2 { left: 50%; }
.bank-node.n3 { left: 80%; }
.stage-scan.active .bank-node {
  animation: bankPing 1.6s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}
/* Staggered to align with the beam reaching each bank's horizontal position */
.stage-scan.active .n1 { animation-delay: 0.15s; }
.stage-scan.active .n2 { animation-delay: 0.60s; }
.stage-scan.active .n3 { animation-delay: 1.05s; }
@keyframes bankPing {
  0%   {
    border-color: var(--border-strong);
    color: var(--text-secondary);
    box-shadow: 0 0 0 0 transparent;
    transform: translate(-50%, -50%) scale(1);
  }
  12%  {
    border-color: var(--gold-bright);
    color: var(--gold-bright);
    box-shadow: 0 0 0 8px var(--gold-glow);
    transform: translate(-50%, -50%) scale(1.10);
  }
  35%  {
    border-color: var(--border-strong);
    color: var(--text-secondary);
    box-shadow: 0 0 0 0 transparent;
    transform: translate(-50%, -50%) scale(1);
  }
  100% {
    border-color: var(--border-strong);
    color: var(--text-secondary);
    box-shadow: 0 0 0 0 transparent;
    transform: translate(-50%, -50%) scale(1);
  }
}

.scan-beam {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 80px;
  background: linear-gradient(90deg, transparent, var(--gold-glow), transparent);
  opacity: 0;
  left: 0;
  pointer-events: none;
}
.stage-scan.active .scan-beam {
  animation: scanSweep 1.6s ease-in-out infinite;
}
@keyframes scanSweep {
  0%   { left: 5%;  opacity: 0; }
  15%  { opacity: 1; }
  85%  { opacity: 1; }
  100% { left: 90%; opacity: 0; }
}

/* Stage 3: tripwires (three radar scanners) */

.stage-tripwire {
  display: flex !important;
  align-items: center;
  justify-content: center;
  gap: var(--s-6);
  padding-bottom: var(--s-3);
}

.tw-scanner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--s-3);
  opacity: 0;
}
.stage-tripwire.active .tw-scanner {
  animation: scannerIn 380ms cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.stage-tripwire.active .tw-s1 { animation-delay: 60ms;  }
.stage-tripwire.active .tw-s2 { animation-delay: 180ms; }
.stage-tripwire.active .tw-s3 { animation-delay: 300ms; }
@keyframes scannerIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.tw-scope {
  position: relative;
  width: 88px;
  height: 88px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 50% 50%, rgba(196, 163, 90, 0.05) 0%, transparent 65%),
    rgba(6, 16, 30, 0.85);
  border: 1.5px solid var(--gold-soft);
  box-shadow:
    inset 0 0 18px rgba(196, 163, 90, 0.08),
    0 0 18px rgba(0, 0, 0, 0.5);
  overflow: hidden;
}

/* Concentric grid inside the scope */
.tw-grid {
  position: absolute;
  inset: 8px;
  border-radius: 50%;
  border: 1px dashed rgba(196, 163, 90, 0.20);
}
.tw-grid::before {
  content: '';
  position: absolute;
  inset: 12px;
  border-radius: 50%;
  border: 1px dashed rgba(196, 163, 90, 0.15);
}
.tw-grid::after {
  content: '';
  position: absolute;
  inset: 24px;
  border-radius: 50%;
  border: 1px dashed rgba(196, 163, 90, 0.10);
}

.tw-ring {
  position: absolute;
  inset: 50%;
  width: 6px;
  height: 6px;
  margin: -3px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 10px var(--gold-glow);
}

.tw-cross-h, .tw-cross-v {
  position: absolute;
  background: rgba(196, 163, 90, 0.18);
}
.tw-cross-h { left: 8px; right: 8px; top: 50%; height: 1px; }
.tw-cross-v { top: 8px; bottom: 8px; left: 50%; width: 1px; }

/* Rotating radar arm */
.tw-arm {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: conic-gradient(
    from -10deg,
    rgba(196, 163, 90, 0.45) 0deg,
    rgba(196, 163, 90, 0.0) 60deg,
    transparent 360deg);
  transform: rotate(0deg);
}
.stage-tripwire.active .tw-arm {
  animation: armSweep 1.6s linear infinite;
}
@keyframes armSweep {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

/* Target blip that flashes when the scanner detects */
.tw-blip {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gold-bright);
  opacity: 0;
}
.tw-s1 .tw-blip { top: 30%; left: 65%; }
.tw-s2 .tw-blip { top: 60%; left: 30%; }
.tw-s3 .tw-blip { top: 25%; left: 28%; }
.stage-tripwire.active .tw-blip {
  animation: blipPing 1.4s ease-in-out infinite;
}
.stage-tripwire.active .tw-s1 .tw-blip { animation-delay: 0.5s; }
.stage-tripwire.active .tw-s2 .tw-blip { animation-delay: 0.8s; }
.stage-tripwire.active .tw-s3 .tw-blip { animation-delay: 1.1s; background: var(--red); }
@keyframes blipPing {
  0%   { opacity: 0; transform: scale(0.6); box-shadow: 0 0 0 0 currentColor; }
  30%  { opacity: 1; transform: scale(1);   box-shadow: 0 0 14px currentColor; }
  100% { opacity: 0; transform: scale(2);   box-shadow: 0 0 0 0 currentColor; }
}

.tw-name {
  font: 600 11px/1 var(--f-head);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.tw-result {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--r-pill);
  font: 600 10px/1 var(--f-head);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0;
}
.tw-clear {
  background: rgba(76, 175, 118, 0.14);
  border: 1px solid rgba(76, 175, 118, 0.4);
  color: var(--green);
}
.tw-fired {
  background: rgba(239, 107, 107, 0.14);
  border: 1px solid rgba(239, 107, 107, 0.45);
  color: var(--red);
}
.tw-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 6px currentColor;
}
.stage-tripwire.active .tw-result {
  animation: resultIn2 360ms ease-out forwards;
}
.stage-tripwire.active .tw-s1 .tw-result { animation-delay: 0.85s; }
.stage-tripwire.active .tw-s2 .tw-result { animation-delay: 1.15s; }
.stage-tripwire.active .tw-s3 .tw-result { animation-delay: 1.45s; }
@keyframes resultIn2 {
  from { opacity: 0; transform: translateY(4px) scale(0.92); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

@media (max-width: 560px) {
  .stage-tripwire { gap: var(--s-4); }
  .tw-scope { width: 72px; height: 72px; }
}

/* Stage 4: enclave (TEE chip with sealed core) */

.stage-enclave { display: grid !important; place-items: center; }

.encl-chip {
  position: relative;
  width: 168px;
  height: 168px;
}

/* Chip pins (contacts) around the perimeter */
.encl-pins { position: absolute; display: flex; }
.encl-pins-t, .encl-pins-b {
  left: 14px; right: 14px;
  justify-content: space-between;
}
.encl-pins-t { top: -10px; }
.encl-pins-b { bottom: -10px; }
.encl-pins-l, .encl-pins-r {
  top: 14px; bottom: 14px;
  flex-direction: column;
  justify-content: space-between;
}
.encl-pins-l { left: -10px; }
.encl-pins-r { right: -10px; }
.encl-pins span {
  background: var(--gold-soft);
  border-radius: 1px;
}
.encl-pins-t span, .encl-pins-b span { width: 6px; height: 10px; }
.encl-pins-l span, .encl-pins-r span { width: 10px; height: 6px; }

.stage-enclave.active .encl-pins span {
  animation: pinFlicker 1.8s ease-in-out infinite;
}
.stage-enclave.active .encl-pins span:nth-child(2n) { animation-delay: 0.4s; }
.stage-enclave.active .encl-pins span:nth-child(3n) { animation-delay: 0.8s; }
@keyframes pinFlicker {
  0%, 100% { background: var(--gold-soft); }
  50%      { background: var(--gold-bright); }
}

/* Chip body */
.encl-body {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(14, 29, 51, 0.98), rgba(6, 16, 30, 0.98));
  border: 1.5px solid var(--gold);
  border-radius: 8px;
  box-shadow:
    0 0 32px var(--gold-glow),
    inset 0 1px 0 rgba(255, 255, 255, 0.06),
    inset 0 0 24px rgba(196, 163, 90, 0.08);
  overflow: hidden;
}

/* PCB traces in the corners */
.encl-trace {
  position: absolute;
  width: 32px;
  height: 32px;
  border: 1px solid var(--gold-soft);
  opacity: 0.5;
}
.encl-trace.t-tl { top: 6px; left: 6px;
  border-right: 0; border-bottom: 0; border-top-left-radius: 4px; }
.encl-trace.t-tr { top: 6px; right: 6px;
  border-left: 0; border-bottom: 0; border-top-right-radius: 4px; }
.encl-trace.t-bl { bottom: 6px; left: 6px;
  border-right: 0; border-top: 0; border-bottom-left-radius: 4px; }
.encl-trace.t-br { bottom: 6px; right: 6px;
  border-left: 0; border-top: 0; border-bottom-right-radius: 4px; }

/* Inner sealed compartment with lock */
.encl-sealed {
  position: absolute;
  inset: 38px;
  background:
    radial-gradient(circle at 50% 40%, rgba(196, 163, 90, 0.18), rgba(6, 16, 30, 0.9) 80%);
  border: 1.2px solid var(--gold);
  border-radius: 4px;
  display: grid;
  place-items: center;
  box-shadow:
    inset 0 0 18px rgba(196, 163, 90, 0.18),
    inset 0 0 0 1px rgba(196, 163, 90, 0.18);
}
.stage-enclave.active .encl-sealed {
  animation: sealedPulse 1.8s ease-in-out infinite;
}
@keyframes sealedPulse {
  0%, 100% { box-shadow: inset 0 0 18px rgba(196, 163, 90, 0.18), inset 0 0 0 1px rgba(196, 163, 90, 0.18), 0 0 0 0 var(--gold-glow); }
  50%      { box-shadow: inset 0 0 28px rgba(196, 163, 90, 0.30), inset 0 0 0 1px var(--gold), 0 0 18px var(--gold-glow); }
}

.encl-lock {
  width: 38px;
  height: 38px;
  color: var(--gold-bright);
  filter: drop-shadow(0 0 8px var(--gold-glow));
  position: relative;
  z-index: 1;
}

.encl-core-pulse {
  position: absolute;
  inset: 18%;
  border: 1px solid var(--gold-soft);
  border-radius: 4px;
  opacity: 0;
}
.stage-enclave.active .encl-core-pulse {
  animation: corePulse 1.8s ease-out infinite;
}
@keyframes corePulse {
  0%   { opacity: 0; transform: scale(0.4); }
  60%  { opacity: 0.6; }
  100% { opacity: 0; transform: scale(1.4); }
}

.encl-tag {
  position: absolute;
  bottom: 6px;
  left: 0; right: 0;
  text-align: center;
  font: 600 8px/1 var(--f-head);
  letter-spacing: 0.25em;
  color: var(--gold-bright);
  text-transform: uppercase;
}

.encl-stream {
  position: absolute;
  bottom: var(--s-4);
  left: var(--s-4); right: var(--s-4);
  display: flex;
  flex-direction: column;
  gap: 4px;
  font: 400 10px/1.5 var(--f-mono);
  color: var(--text-tertiary);
  letter-spacing: 0.02em;
  opacity: 0.75;
  pointer-events: none;
}
.encl-stream span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  opacity: 0;
}
.encl-stream code {
  color: var(--gold-bright);
  font-family: inherit;
}
.encl-stream .dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 6px var(--green-glow);
  flex: 0 0 4px;
  display: inline-block;
}
.stage-enclave.active .encl-stream span {
  animation: streamIn 0.5s ease-out forwards;
}
.stage-enclave.active .encl-stream span:nth-child(1) { animation-delay: 0.3s; }
.stage-enclave.active .encl-stream span:nth-child(2) { animation-delay: 0.8s; }
.stage-enclave.active .encl-stream span:nth-child(3) { animation-delay: 1.3s; }
@keyframes streamIn {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 0.85; transform: translateY(0); }
}

/* Stage 5: sealing (evidence converges → package → seal stamp → Merkle root) */

.stage-merkle { display: grid !important; place-items: center; }

.seal-stage {
  position: relative;
  width: 320px;
  height: 200px;
  display: grid;
  place-items: center;
}

/* Evidence chips: start scattered around the perimeter, then converge to centre */
.seal-ev {
  position: absolute;
  padding: 5px 11px;
  background: rgba(196, 163, 90, 0.10);
  border: 1px solid var(--gold-soft);
  border-radius: var(--r-pill);
  font: 600 10px/1 var(--f-head);
  letter-spacing: 0.14em;
  color: var(--gold-bright);
  text-transform: uppercase;
  opacity: 0;
  white-space: nowrap;
  z-index: 2;
}

/* Starting positions (around the centre of the stage) */
.ev-1 { top: 8%;   left: 6%;   --ex:0;   --ey:0; }
.ev-2 { top: 50%;  left: 0%;   transform: translateY(-50%); --ex:0; --ey:0; }
.ev-3 { bottom: 8%;left: 6%;   --ex:0;   --ey:0; }
.ev-4 { top: 0%;   left: 50%;  transform: translateX(-50%); --ex:0; --ey:0; }
.ev-5 { top: 8%;   right: 6%;  --ex:0;   --ey:0; }
.ev-6 { top: 50%;  right: 0%;  transform: translateY(-50%); --ex:0; --ey:0; }
.ev-7 { bottom: 8%;right: 6%;  --ex:0;   --ey:0; }

/* Chained: appear (per-chip delay) then converge (synchronised for all chips at 4.0s).
   Gives ~1.6 seconds of "all 7 chips visible at once" reading time. */
.stage-merkle.active .seal-ev {
  animation:
    evAppear 0.55s cubic-bezier(0.16, 1, 0.3, 1) var(--ev-delay, 0s) forwards,
    evConverge 0.9s cubic-bezier(0.4, 0, 0.2, 1) 4.0s forwards;
}
.ev-1 { --ev-delay: 0.10s; }
.ev-2 { --ev-delay: 0.40s; }
.ev-3 { --ev-delay: 0.70s; }
.ev-4 { --ev-delay: 1.00s; }
.ev-5 { --ev-delay: 1.30s; }
.ev-6 { --ev-delay: 1.60s; }
.ev-7 { --ev-delay: 1.90s; }
@keyframes evAppear {
  from { opacity: 0; transform: scale(0.55); }
  to   { opacity: 1; transform: scale(1); }
}
@keyframes evConverge {
  from { opacity: 1; }
  to   { opacity: 0; top: 50%; left: 50%; right: auto; bottom: auto;
         transform: translate(-50%, -50%) scale(0.35); }
}

/* Trail lines drawn from chip start positions toward centre */
.seal-trails {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
.trail {
  stroke: var(--gold);
  stroke-width: 0.8;
  stroke-dasharray: 120;
  stroke-dashoffset: 120;
  opacity: 0;
  filter: drop-shadow(0 0 2px var(--gold-glow));
}
.stage-merkle.active .trail {
  animation: trailDraw 0.9s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}
/* Trails draw at the moment chips begin converging */
.stage-merkle.active .t1 { animation-delay: 3.85s; }
.stage-merkle.active .t2 { animation-delay: 3.90s; }
.stage-merkle.active .t3 { animation-delay: 3.95s; }
.stage-merkle.active .t4 { animation-delay: 4.00s; }
.stage-merkle.active .t5 { animation-delay: 4.05s; }
.stage-merkle.active .t6 { animation-delay: 4.10s; }
.stage-merkle.active .t7 { animation-delay: 4.15s; }
@keyframes trailDraw {
  0%   { stroke-dashoffset: 120; opacity: 0; }
  30%  { opacity: 0.8; }
  70%  { opacity: 0.4; }
  100% { stroke-dashoffset: 0;   opacity: 0; }
}

/* Central package: envelope outline, scales in once chips converge */
.seal-package {
  position: relative;
  width: 96px;
  height: 72px;
  z-index: 3;
  opacity: 0;
  color: var(--gold-bright);
}
.seal-package-body {
  position: absolute;
  inset: 0;
  filter: drop-shadow(0 0 14px var(--gold-glow));
}
.seal-envelope { width: 100%; height: 100%; }
.stage-merkle.active .seal-package {
  animation: pkgIn 0.55s cubic-bezier(0.16, 1, 0.3, 1) 4.9s forwards;
}
@keyframes pkgIn {
  from { opacity: 0; transform: scale(0.6); }
  to   { opacity: 1; transform: scale(1); }
}

/* Seal stamp lands on top of the package, with its own dark disc background
   so the envelope outline behind is fully occluded (same treatment as the
   progress nodes). */
.seal-stamp {
  position: absolute;
  width: 52px;
  height: 52px;
  top: 50%;
  left: 50%;
  margin: -26px 0 0 -26px;
  color: var(--gold-bright);
  opacity: 0;
  transform: scale(1.8) rotate(-12deg);
  background: var(--bg-base);
  border-radius: 50%;
  box-shadow:
    0 0 0 2px var(--bg-base),
    0 0 14px var(--gold-glow),
    0 0 24px rgba(196, 163, 90, 0.22);
  display: grid;
  place-items: center;
}
.seal-stamp-svg {
  width: 80%;
  height: 80%;
  position: relative;
  z-index: 1;
}
.stage-merkle.active .seal-stamp {
  animation: stampDown 0.4s cubic-bezier(0.4, 0, 0.2, 1) 5.35s forwards;
}
@keyframes stampDown {
  0%   { opacity: 0; transform: scale(1.9) rotate(-12deg); }
  60%  { opacity: 1; transform: scale(1.0) rotate(0deg); }
  80%  { transform: scale(1.12) rotate(0deg); }
  100% { opacity: 1; transform: scale(1.0) rotate(0deg); }
}

/* Burst flash at the moment of sealing */
.seal-flash {
  position: absolute;
  inset: -16px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--gold-glow), transparent 70%);
  opacity: 0;
  pointer-events: none;
}
.stage-merkle.active .seal-flash {
  animation: flashBurst 0.55s ease-out 5.45s;
}
@keyframes flashBurst {
  0%   { opacity: 0; transform: scale(0.5); }
  40%  { opacity: 0.9; }
  100% { opacity: 0; transform: scale(2.2); }
}

/* Merkle root signature at the bottom */
.seal-merkle-tag {
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(76, 175, 118, 0.10);
  border: 1px solid rgba(76, 175, 118, 0.40);
  border-radius: var(--r-pill);
  font: 600 10px/1 var(--f-mono);
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  opacity: 0;
  white-space: nowrap;
}
.seal-md-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 6px var(--green-glow);
}
.seal-md-label {
  color: var(--green);
  letter-spacing: 0.15em;
  font-family: var(--f-head);
}
.seal-md-hash { color: var(--gold-bright); }
.stage-merkle.active .seal-merkle-tag {
  animation: tagIn 0.5s ease-out 5.9s forwards;
}
@keyframes tagIn {
  from { opacity: 0; transform: translate(-50%, 8px); }
  to   { opacity: 1; transform: translate(-50%, 0); }
}

/* Progress timeline at the bottom */

.sim-progress {
  position: relative;
  z-index: 1;
  margin-top: auto;
  padding: var(--s-5) 0 var(--s-6);
}
.sim-progress-track,
.sim-progress-fill {
  position: absolute;
  left: 22px;       /* half a node width */
  right: 22px;
  top: 50%;
  height: 2px;
  border-radius: 1px;
  transform: translateY(-2px);
  z-index: 0;
}
.sim-progress-track { background: rgba(196, 163, 90, 0.18); }
.sim-progress-fill {
  background: linear-gradient(90deg, var(--gold), var(--gold-bright));
  width: 0%;
  transition: width 700ms cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 0 12px var(--gold-glow);
}
.sim-progress-nodes {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1;
}
.sim-progress-node {
  position: relative;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  /* Fully opaque so the line behind is properly hidden */
  background: var(--bg-base);
  border: 1.5px solid rgba(196, 163, 90, 0.32);
  color: var(--text-tertiary);
  display: grid;
  place-items: center;
  z-index: 2;
  transition: all 360ms cubic-bezier(0.16, 1, 0.3, 1);
  /* Extra ring around the node that occludes the line under the border too */
  box-shadow: 0 0 0 3px var(--bg-base);
}
.sim-progress-node svg {
  width: 22px;
  height: 22px;
  transition: transform 360ms cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  z-index: 1;
}
.sim-progress-node.active {
  background: var(--bg-base);
  border-color: var(--gold);
  color: var(--gold-bright);
  box-shadow:
    0 0 0 3px var(--bg-base),
    0 0 0 5px rgba(196, 163, 90, 0.18),
    0 0 18px var(--gold-glow);
}
.sim-progress-node.current {
  /* Solid gold fill so no line shows through */
  background: linear-gradient(180deg, var(--gold-bright), var(--gold));
  border-color: var(--gold-bright);
  color: #1a1108;
  transform: scale(1.10);
  animation: nodeBeacon 1.6s ease-in-out infinite;
}
.sim-progress-node.current svg { transform: scale(1.05); }
@keyframes nodeBeacon {
  0%, 100% {
    box-shadow:
      0 0 0 3px var(--bg-base),
      0 0 0 6px rgba(196, 163, 90, 0.30),
      0 0 22px var(--gold-glow);
  }
  50% {
    box-shadow:
      0 0 0 3px var(--bg-base),
      0 0 0 14px rgba(196, 163, 90, 0.04),
      0 0 32px var(--gold-glow);
  }
}

/* Per-node label below */
.node-tip {
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%);
  font: 600 9.5px/1 var(--f-head);
  letter-spacing: 0.16em;
  color: var(--text-tertiary);
  text-transform: uppercase;
  white-space: nowrap;
  transition: color 280ms ease;
}
.sim-progress-node.active .node-tip { color: var(--gold-bright); }
.sim-progress-node.current .node-tip { color: var(--text-primary); }

@media (max-width: 560px) {
  .sim-progress-node { width: 36px; height: 36px; }
  .sim-progress-node svg { width: 18px; height: 18px; }
  .node-tip { font-size: 8.5px; letter-spacing: 0.12em; }
  .sim-progress-track, .sim-progress-fill { left: 18px; right: 18px; }
}

/* Cards hidden during the animation */

#result-cards { opacity: 1; }
#result-cards[hidden] { display: none; }
#result-cards:not([hidden]) {
  animation: resultIn 0.7s var(--t-slow) backwards;
}

/* ====== Result-card framing: BASELINE (without Fidua) vs FIDUA ====== */

.result-card-baseline {
  /* Subtly muted card so it reads as the "comparison / before" panel */
  background: linear-gradient(180deg, rgba(168, 178, 193, 0.04), var(--bg-card));
  border-color: rgba(168, 178, 193, 0.22);
  position: relative;
}
.result-card-baseline::before {
  /* Left accent strip indicating "this is the baseline" */
  content: '';
  position: absolute;
  top: -1px; bottom: -1px;
  left: -1px;
  width: 4px;
  background: linear-gradient(180deg, rgba(168, 178, 193, 0.5), rgba(168, 178, 193, 0.15));
  border-radius: var(--r-lg) 0 0 var(--r-lg);
}

.result-card-fidua {
  /* Fidua's panel reads as the "solution / after" panel */
  background: linear-gradient(180deg, rgba(196, 163, 90, 0.08), var(--bg-card));
  border-color: var(--border-strong);
  position: relative;
}
.result-card-fidua::before {
  content: '';
  position: absolute;
  top: -1px; bottom: -1px;
  left: -1px;
  width: 4px;
  background: linear-gradient(180deg, var(--gold-bright), var(--gold));
  border-radius: var(--r-lg) 0 0 var(--r-lg);
  box-shadow: 0 0 14px var(--gold-glow);
}

/* Tag at the top of each card */
.result-card-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border-radius: var(--r-pill);
  font: 700 11px/1 var(--f-head);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: var(--s-5);
}
.result-card-tag .tag-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 8px currentColor;
}
.tag-baseline {
  background: rgba(168, 178, 193, 0.10);
  border: 1px solid rgba(168, 178, 193, 0.30);
  color: var(--text-secondary);
}
.tag-fidua {
  background: rgba(196, 163, 90, 0.12);
  border: 1px solid rgba(196, 163, 90, 0.40);
  color: var(--gold-bright);
}
.tag-baseline .tag-dot { box-shadow: 0 0 6px rgba(168, 178, 193, 0.6); }
.tag-fidua .tag-dot    { box-shadow: 0 0 8px var(--gold-glow); }

/* Intro paragraph between tag and verdict */
.result-card-intro {
  margin-bottom: var(--s-5);
}
.result-card-title {
  font: 700 18px/1.3 var(--f-head);
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin: 0 0 var(--s-2);
}
.result-card-subtitle {
  font: 400 14px/1.55 var(--f-body);
  color: var(--text-secondary);
  margin: 0;
  max-width: 540px;
}

/* ============== Reduced motion ============== */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .bg-grid { animation: none; }
}