/* PROJECT BLACK BOX LLC — projectblackbox.tech */
/* World-class AI security research. Dark. Commanding. Precise. */

/* ── DESIGN TOKENS ──────────────────────────────────────────────────────────── */
:root {
  --bg:           #050507;
  --bg-alt:       #07080b;
  --surface:      #0b0d12;
  --surface2:     #0f1118;
  --surface3:     #13151e;
  --border:       #1a1d28;
  --border2:      #252836;
  --border3:      #2e3245;

  --text:         #c4cde0;
  --text-dim:     #8896b4;
  --text-mute:    #4a5470;
  --white:        #edf1fb;
  --white-dim:    #c0cbdf;

  /* Regime colors */
  --crystalline:      #4ade80;
  --crystalline-dim:  rgba(74,222,128,0.08);
  --crystalline-glow: rgba(74,222,128,0.25);
  --fluid:            #38bdf8;
  --fluid-dim:        rgba(56,189,248,0.08);
  --fluid-glow:       rgba(56,189,248,0.25);
  --gaseous:          #fbbf24;
  --gaseous-dim:      rgba(251,191,36,0.08);
  --gaseous-glow:     rgba(251,191,36,0.25);
  --plasma:           #f87171;
  --plasma-dim:       rgba(248,113,113,0.08);
  --plasma-glow:      rgba(248,113,113,0.25);

  /* Accent */
  --accent:       #818cf8;
  --accent-dim:   rgba(129,140,248,0.08);
  --accent-glow:  rgba(129,140,248,0.2);
  --embargo-red:  #dc2626;

  --font-sans:    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', 'Courier New', monospace;

  --radius-sm:    4px;
  --radius:       8px;
  --radius-lg:    12px;

  --transition:   0.18s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 17px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ── TYPOGRAPHY ─────────────────────────────────────────────────────────────── */
h1, h2, h3, h4 {
  color: var(--white);
  letter-spacing: -0.025em;
  line-height: 1.15;
}
h1 { font-size: clamp(2.6rem, 6vw, 4.8rem); font-weight: 800; }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); font-weight: 700; }
h3 { font-size: 1.25rem; font-weight: 600; }
p  { color: var(--text); }
a  { color: var(--fluid); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--white); text-decoration: none; }

/* ── LAYOUT ─────────────────────────────────────────────────────────────────── */
.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 28px;
}

.section {
  padding: 96px 0;
  border-bottom: 1px solid var(--border);
  position: relative;
}
.section:last-child { border-bottom: none; }

.section-alt { background: var(--bg-alt); }

/* ── ANIMATED GRID BACKGROUND ───────────────────────────────────────────────── */
.grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(129,140,248,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(129,140,248,0.025) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 0%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 0%, transparent 100%);
}

/* ── NAV ────────────────────────────────────────────────────────────────────── */
nav {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(5,5,7,0.85);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.nav-logo span { color: var(--fluid); }

.nav-links {
  display: flex;
  gap: 36px;
  list-style: none;
  align-items: center;
}
.nav-links a {
  color: var(--text-dim);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--white); }

/* ── EMBARGO BANNER ─────────────────────────────────────────────────────────── */
.embargo-banner {
  background: linear-gradient(135deg, #0f0303, #1a0505);
  border-bottom: 1px solid rgba(220,38,38,0.35);
  padding: 14px 28px;
}
.embargo-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  flex-wrap: wrap;
}
.embargo-badge {
  flex-shrink: 0;
  background: var(--embargo-red);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  padding: 3px 9px;
  border-radius: var(--radius-sm);
  margin-top: 3px;
  text-transform: uppercase;
}
.embargo-text { flex: 1; min-width: 200px; }
.embargo-text strong { color: #fca5a5; font-size: 0.88rem; display: block; margin-bottom: 2px; }
.embargo-text p { color: rgba(248,113,113,0.7); font-size: 0.78rem; line-height: 1.5; }
.embargo-countdown { flex-shrink: 0; text-align: right; }
.countdown-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  color: rgba(252,165,165,0.6);
  margin-bottom: 3px;
  text-transform: uppercase;
}
#countdown-display {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.06em;
}

/* ── HERO ───────────────────────────────────────────────────────────────────── */
.hero {
  padding: 120px 0 100px;
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.hero-gradient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 50% at 80% 20%, rgba(220,38,38,0.06) 0%, transparent 60%),
    radial-gradient(ellipse 50% 70% at 10% 80%, rgba(129,140,248,0.04) 0%, transparent 60%);
  pointer-events: none;
}

/* Hero two-column layout */
.hero-layout {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 60px;
}
.hero-content {
  flex: 1;
  min-width: 0;
}
.hero-logo-col {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-logo-wrap {
  position: relative;
  width: 300px;
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-logo-wrap::before {
  content: '';
  position: absolute;
  inset: -20px;
  background: radial-gradient(ellipse 80% 80% at 50% 50%, rgba(220,38,38,0.12) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.hero-logo-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 0 30px rgba(220,38,38,0.4)) drop-shadow(0 0 60px rgba(220,38,38,0.15));
  animation: logo-breathe 4s ease-in-out infinite;
}
@keyframes logo-breathe {
  0%, 100% { filter: drop-shadow(0 0 30px rgba(220,38,38,0.4)) drop-shadow(0 0 60px rgba(220,38,38,0.15)); }
  50%       { filter: drop-shadow(0 0 45px rgba(220,38,38,0.6)) drop-shadow(0 0 80px rgba(220,38,38,0.25)); }
}
@media (max-width: 900px) {
  .hero-layout { flex-direction: column-reverse; gap: 40px; }
  .hero-logo-wrap { width: 200px; height: 200px; }
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 28px;
}

.hero-title {
  margin-bottom: 32px;
  max-width: 840px;
}
.hero-title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--fluid) 0%, var(--crystalline) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--text);
  max-width: 660px;
  margin-bottom: 36px;
  line-height: 1.75;
}

/* ── HERO CTA ROW ───────────────────────────────────────────────────────────── */
.hero-cta-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.hero-cta-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: var(--crystalline);
  color: #020d07;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: var(--radius);
  text-decoration: none;
  transition: all 0.2s ease;
  box-shadow: 0 0 24px rgba(74,222,128,0.35), 0 0 48px rgba(74,222,128,0.12);
  overflow: hidden;
}
.hero-cta-btn:hover {
  background: #6ee7a0;
  color: #020d07;
  box-shadow: 0 0 36px rgba(74,222,128,0.55), 0 0 72px rgba(74,222,128,0.2);
  transform: translateY(-1px);
}
.hero-cta-pulse {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
  transform: translateX(-100%);
  animation: cta-sweep 3s ease-in-out infinite;
}
@keyframes cta-sweep {
  0%, 60%   { transform: translateX(-100%); }
  100%      { transform: translateX(200%); }
}

.hero-secondary-btn {
  display: inline-flex;
  align-items: center;
  padding: 14px 24px;
  background: transparent;
  color: var(--white-dim);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  text-decoration: none;
  transition: all 0.2s ease;
}
.hero-secondary-btn:hover {
  color: var(--white);
  border-color: var(--border3);
  background: var(--surface);
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 56px;
}

.tag {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  padding: 5px 11px;
  border-radius: var(--radius-sm);
  border: 1px solid;
  white-space: nowrap;
}
.tag-green  { color: var(--crystalline); border-color: rgba(74,222,128,0.3);  background: var(--crystalline-dim); }
.tag-cyan   { color: var(--fluid);       border-color: rgba(56,189,248,0.3);  background: var(--fluid-dim);       }
.tag-accent { color: var(--accent);      border-color: rgba(129,140,248,0.3); background: var(--accent-dim);      }
.tag-red    { color: var(--plasma);      border-color: rgba(248,113,113,0.3); background: var(--plasma-dim);      }

.hero-stats {
  display: flex;
  gap: 0;
  flex-wrap: wrap;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 680px;
}
.stat-block {
  flex: 1;
  min-width: 140px;
  padding: 20px 24px;
  border-right: 1px solid var(--border);
  background: var(--surface);
}
.stat-block:last-child { border-right: none; }
.stat-block-link { cursor: pointer; transition: background var(--transition); }
.stat-block-link:hover { background: var(--surface2); }
.stat-doi-link {
  display: block;
  text-decoration: none;
  color: inherit;
}
.stat-num {
  font-family: var(--font-mono);
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1;
  margin-bottom: 6px;
}
.stat-doi {
  font-size: 0.85rem;
  word-break: break-all;
  line-height: 1.4;
  color: var(--accent);
}
.stat-label {
  font-size: 0.72rem;
  color: var(--text-dim);
  line-height: 1.4;
}
.stat-doi-link:hover .stat-label { color: var(--accent); }

/* ── SECTION HEADERS ────────────────────────────────────────────────────────── */
.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.section-title { margin-bottom: 18px; }
.section-desc {
  font-size: 1.02rem;
  color: var(--text-dim);
  max-width: 640px;
  margin-bottom: 52px;
  line-height: 1.75;
}

/* ── CARDS ──────────────────────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.card:hover {
  border-color: var(--border2);
  box-shadow: 0 0 0 1px var(--border2);
}

.card-grid { display: grid; gap: 20px; }
.card-grid-2 { grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); }
.card-grid-3 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }

.card-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 3px 9px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
}
.badge-live    { background: var(--crystalline-dim);  color: var(--crystalline);  border: 1px solid rgba(74,222,128,0.3);  }
.badge-pub     { background: var(--fluid-dim);         color: var(--fluid);        border: 1px solid rgba(56,189,248,0.3);  }
.badge-embargo { background: var(--plasma-dim);        color: var(--plasma);       border: 1px solid rgba(248,113,113,0.3); }
.badge-build   { background: var(--accent-dim);        color: var(--accent);       border: 1px solid rgba(129,140,248,0.3); }

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.73rem;
  font-weight: 600;
  color: var(--fluid);
  padding: 7px 14px;
  border: 1px solid rgba(56,189,248,0.2);
  border-radius: var(--radius-sm);
  background: var(--fluid-dim);
  transition: all var(--transition);
  text-decoration: none;
}
.card-link:hover {
  background: rgba(56,189,248,0.12);
  border-color: rgba(56,189,248,0.5);
  color: var(--white);
}
.card-link-disabled {
  color: var(--text-mute) !important;
  border-color: var(--border) !important;
  background: transparent !important;
  cursor: not-allowed;
  opacity: 0.5;
}

/* ── WHAT WE ARE NOT ────────────────────────────────────────────────────────── */
.not-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.not-card {
  background: var(--surface);
  padding: 28px 32px;
  transition: background var(--transition);
}
.not-card:hover { background: var(--surface2); }
.not-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--plasma);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.not-head {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
}
.not-body {
  font-size: 0.85rem;
  color: var(--text-dim);
  line-height: 1.65;
}

/* ── RLHF PROBLEM ───────────────────────────────────────────────────────────── */
.rlhf-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 40px;
}
.rlhf-block {
  background: var(--surface);
  padding: 36px 40px;
}
.rlhf-block:hover { background: var(--surface2); }
.rlhf-num {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--text-mute);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.rlhf-head {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
  line-height: 1.3;
}
.rlhf-body {
  font-size: 0.88rem;
  color: var(--text-dim);
  line-height: 1.7;
}

.quote-callout {
  border-left: 3px solid var(--fluid);
  padding: 28px 36px;
  background: linear-gradient(135deg, rgba(56,189,248,0.04), rgba(56,189,248,0.01));
  border-radius: 0 var(--radius) var(--radius) 0;
  margin-top: 32px;
}
.quote-text {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--white);
  line-height: 1.6;
  font-style: italic;
  margin-bottom: 12px;
}
.quote-attr {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  letter-spacing: 0.06em;
}

/* ── HOW IT WORKS ───────────────────────────────────────────────────────────── */
.how-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.how-card {
  background: var(--surface);
  padding: 36px 32px;
  position: relative;
}
.how-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}
.how-card:hover::before { opacity: 1; }
.how-step {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 800;
  color: var(--border3);
  margin-bottom: 16px;
  line-height: 1;
}
.how-head {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
}
.how-body {
  font-size: 0.86rem;
  color: var(--text-dim);
  line-height: 1.7;
}

/* ── FOUR REGIMES ───────────────────────────────────────────────────────────── */
.regimes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.regime-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.regime-card:hover {
  box-shadow: 0 0 30px var(--regime-glow, rgba(129,140,248,0.1));
  border-color: var(--regime-color, var(--border2));
}

.regime-card-crystalline {
  --regime-color: rgba(74,222,128,0.4);
  --regime-glow: rgba(74,222,128,0.1);
  background: linear-gradient(160deg, rgba(74,222,128,0.04) 0%, var(--surface) 60%);
}
.regime-card-fluid {
  --regime-color: rgba(56,189,248,0.4);
  --regime-glow: rgba(56,189,248,0.1);
  background: linear-gradient(160deg, rgba(56,189,248,0.04) 0%, var(--surface) 60%);
}
.regime-card-gaseous {
  --regime-color: rgba(251,191,36,0.4);
  --regime-glow: rgba(251,191,36,0.1);
  background: linear-gradient(160deg, rgba(251,191,36,0.04) 0%, var(--surface) 60%);
}
.regime-card-plasma {
  --regime-color: rgba(248,113,113,0.4);
  --regime-glow: rgba(248,113,113,0.1);
  background: linear-gradient(160deg, rgba(248,113,113,0.05) 0%, var(--surface) 60%);
}

.regime-symbol {
  font-size: 2.4rem;
  line-height: 1;
  margin-bottom: 16px;
  display: block;
}

/* Pulsing glow animations per regime */
@keyframes pulse-crystalline {
  0%, 100% { text-shadow: 0 0 8px rgba(74,222,128,0.4), 0 0 20px rgba(74,222,128,0.1); }
  50%       { text-shadow: 0 0 16px rgba(74,222,128,0.7), 0 0 40px rgba(74,222,128,0.25); }
}
@keyframes pulse-fluid {
  0%, 100% { text-shadow: 0 0 8px rgba(56,189,248,0.4), 0 0 20px rgba(56,189,248,0.1); }
  50%       { text-shadow: 0 0 16px rgba(56,189,248,0.7), 0 0 40px rgba(56,189,248,0.25); }
}
@keyframes pulse-gaseous {
  0%, 100% { text-shadow: 0 0 8px rgba(251,191,36,0.4), 0 0 20px rgba(251,191,36,0.1); }
  50%       { text-shadow: 0 0 16px rgba(251,191,36,0.7), 0 0 40px rgba(251,191,36,0.25); }
}
@keyframes pulse-plasma {
  0%, 100% { text-shadow: 0 0 8px rgba(248,113,113,0.5), 0 0 20px rgba(248,113,113,0.15); }
  50%       { text-shadow: 0 0 20px rgba(248,113,113,0.9), 0 0 50px rgba(248,113,113,0.3); }
}

.regime-card-crystalline .regime-symbol {
  color: var(--crystalline);
  animation: pulse-crystalline 3s ease-in-out infinite;
}
.regime-card-fluid .regime-symbol {
  color: var(--fluid);
  animation: pulse-fluid 3.5s ease-in-out infinite;
}
.regime-card-gaseous .regime-symbol {
  color: var(--gaseous);
  animation: pulse-gaseous 2.8s ease-in-out infinite;
}
.regime-card-plasma .regime-symbol {
  color: var(--plasma);
  animation: pulse-plasma 2.2s ease-in-out infinite;
}

.regime-name {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.regime-card-crystalline .regime-name { color: var(--crystalline); }
.regime-card-fluid       .regime-name { color: var(--fluid); }
.regime-card-gaseous     .regime-name { color: var(--gaseous); }
.regime-card-plasma      .regime-name { color: var(--plasma); }

.regime-desc {
  font-size: 0.86rem;
  color: var(--text-dim);
  line-height: 1.65;
  margin-bottom: 20px;
}

.regime-action {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  display: inline-block;
}
.regime-card-crystalline .regime-action { color: var(--crystalline); background: var(--crystalline-dim); border: 1px solid rgba(74,222,128,0.2); }
.regime-card-fluid       .regime-action { color: var(--fluid);       background: var(--fluid-dim);       border: 1px solid rgba(56,189,248,0.2); }
.regime-card-gaseous     .regime-action { color: var(--gaseous);     background: var(--gaseous-dim);     border: 1px solid rgba(251,191,36,0.2); }
.regime-card-plasma      .regime-action { color: var(--plasma);      background: var(--plasma-dim);      border: 1px solid rgba(248,113,113,0.2); }

/* ── DEMO SECTION ───────────────────────────────────────────────────────────── */
.demo-mode-toggle {
  display: flex;
  align-items: stretch;
  gap: 12px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.demo-mode-btn {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  padding: 16px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--border2);
  background: var(--surface);
  color: var(--text-dim);
  cursor: pointer;
  transition: all 0.2s ease;
  min-width: 180px;
}
.demo-mode-btn:hover:not(.active) {
  border-color: var(--border3);
  color: var(--text);
  background: var(--surface2);
}
.demo-mode-btn.active {
  border-color: var(--border2);
  background: var(--surface2);
  color: var(--text-dim);
}

/* The live button — disabled/coming soon state */
.demo-mode-btn-disabled {
  opacity: 0.4;
  cursor: not-allowed !important;
  border-color: var(--border) !important;
}
.demo-mode-btn-disabled:hover {
  background: var(--surface) !important;
  border-color: var(--border) !important;
  color: var(--text-mute) !important;
}

.demo-btn-label {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
}
.demo-mode-btn-live.active .demo-btn-label { color: var(--crystalline); }

.demo-btn-sub {
  font-size: 0.75rem;
  font-family: var(--font-sans);
  font-weight: 400;
  letter-spacing: 0;
  text-transform: none;
  color: inherit;
  opacity: 0.7;
}

/* Pulsing green dot on live button */
.demo-live-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--crystalline);
  flex-shrink: 0;
  box-shadow: 0 0 6px rgba(74,222,128,0.8);
}
.demo-mode-btn-live.active .demo-live-dot {
  animation: live-pulse 1.8s ease-in-out infinite;
}
@keyframes live-pulse {
  0%, 100% { opacity: 1;   box-shadow: 0 0 6px  rgba(74,222,128,0.8); }
  50%       { opacity: 0.6; box-shadow: 0 0 14px rgba(74,222,128,1.0); }
}

.demo-meta {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-mute);
  margin-bottom: 28px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.demo-meta span { color: var(--text-dim); }

/* Scenario tabs */
.chat-scenario-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.chat-tab {
  font-family: var(--font-mono);
  font-size: 0.73rem;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: 0.04em;
}
.chat-tab.active {
  background: var(--surface2);
  border-color: var(--accent);
  color: var(--white);
}
.chat-tab:hover:not(.active) {
  border-color: var(--border2);
  color: var(--text);
}
.chat-scenario { display: none; }
.chat-scenario.active { display: block; }

/* Chat window */
.chat-window {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  max-width: 800px;
  margin: 0 auto;
}
.chat-titlebar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 11px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.chat-dot { width: 11px; height: 11px; border-radius: 50%; }
.chat-dot-r { background: #ff5f57; }
.chat-dot-y { background: #ffbd2e; }
.chat-dot-g { background: #28c940; }
.chat-titlebar-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-mute);
  margin-left: 4px;
}
.chat-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.chat-exchange {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.3s;
}
.chat-exchange-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--text-mute);
  text-transform: uppercase;
  padding: 7px 16px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.chat-user {
  padding: 14px 18px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 12px;
  align-items: flex-start;
}
.chat-avatar {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text-mute);
  padding: 3px 7px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  margin-top: 2px;
  text-transform: uppercase;
}
.chat-avatar-ai { color: var(--fluid); border-color: rgba(56,189,248,0.25); }
.chat-msg {
  font-size: 0.86rem;
  color: var(--text);
  line-height: 1.6;
  font-family: var(--font-mono);
  white-space: pre-wrap;
  word-break: break-word;
}
.chat-ai-block {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 14px 18px;
  display: flex;
  gap: 12px;
  align-items: flex-start;
}
.chat-ai-response {
  font-size: 0.86rem;
  color: var(--text);
  line-height: 1.65;
  flex: 1;
}
.chat-tav-bar {
  padding: 12px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.tav-left {
  display: flex;
  align-items: center;
  gap: 12px;
}
.tav-symbol { font-size: 1.5rem; line-height: 1; }
.tav-regime-name {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
}
.tav-L {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-mute);
  margin-top: 2px;
}
.tav-action {
  font-size: 0.73rem;
  color: var(--text-dim);
  margin-top: 2px;
}
.tav-bar-track {
  flex: 1;
  min-width: 80px;
  max-width: 200px;
}
.tav-bar-label {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  color: var(--text-mute);
  margin-bottom: 5px;
}
.tav-bar-fill-wrap {
  height: 4px;
  background: var(--border2);
  border-radius: 2px;
  overflow: hidden;
}
.tav-bar-fill {
  height: 100%;
  border-radius: 2px;
  transition: width 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}
.chat-finding {
  padding: 12px 18px;
  border-top: 1px solid var(--border);
  font-size: 0.82rem;
  color: var(--text-dim);
  line-height: 1.65;
  background: var(--bg);
}
.chat-finding-lbl {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent);
  text-transform: uppercase;
  display: block;
  margin-bottom: 5px;
}
.chat-delta {
  text-align: center;
  padding: 10px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-mute);
}
.chat-delta strong { color: var(--plasma); }

/* ── LIVE DEMO ───────────────────────────────────────────────────────────────── */
#live-demo-panel {
  display: none;
  max-width: 800px;
  margin: 0 auto;
}
#live-demo-panel.visible { display: block; }

.live-input-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
}
.live-input-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-bottom: 12px;
  display: block;
}
.live-textarea {
  width: 100%;
  min-height: 100px;
  background: var(--bg);
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 0.86rem;
  line-height: 1.6;
  padding: 14px 16px;
  resize: vertical;
  outline: none;
  transition: border-color var(--transition);
}
.live-textarea:focus { border-color: var(--accent); }
.live-textarea::placeholder { color: var(--text-mute); }
.live-char-count {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-mute);
  text-align: right;
  margin-top: 6px;
}
.live-char-count.over { color: var(--plasma); }
.live-submit-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 16px;
  flex-wrap: wrap;
}
.live-submit-btn {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 11px 28px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(129,140,248,0.4);
  background: var(--accent-dim);
  color: var(--accent);
  cursor: pointer;
  transition: all var(--transition);
}
.live-submit-btn:hover:not(:disabled) {
  background: rgba(129,140,248,0.15);
  border-color: var(--accent);
  color: var(--white);
}
.live-submit-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}
.live-note {
  font-size: 0.78rem;
  color: var(--text-dim);
  line-height: 1.6;
}

/* Loading state */
@keyframes measuring-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}
.live-measuring {
  display: none;
  align-items: center;
  gap: 12px;
  padding: 20px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 20px;
}
.live-measuring.visible { display: flex; }
.measuring-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  animation: measuring-pulse 1s ease-in-out infinite;
}
.measuring-dot:nth-child(2) { animation-delay: 0.2s; }
.measuring-dot:nth-child(3) { animation-delay: 0.4s; }
.measuring-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* Live result */
.live-result {
  display: none;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 20px;
}
.live-result.visible { display: block; }
.live-result-header {
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.live-result-symbol { font-size: 2rem; line-height: 1; }
.live-result-regime {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.06em;
}
.live-result-l {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-top: 3px;
}
.live-result-msg {
  padding: 14px 20px;
  font-size: 0.9rem;
  color: var(--text);
  line-height: 1.6;
  border-top: 1px solid var(--border);
}
.live-result-stability-note {
  padding: 10px 20px;
  font-size: 0.78rem;
  color: var(--text-dim);
  line-height: 1.6;
  border-top: 1px solid var(--border);
  font-style: italic;
}
.live-result-stability-note em {
  font-style: normal;
  color: var(--white-dim);
}
.live-result-ghost {
  padding: 10px 20px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-mute);
  border-top: 1px solid var(--border);
  background: var(--bg);
  display: flex;
  align-items: center;
  gap: 8px;
}
.ghost-lock { color: var(--crystalline); }
.live-result-latency {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-mute);
  margin-left: auto;
}
/* Live response — AI answer or intercept message */
.live-response {
  display: none;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 16px;
}
.live-response.visible { display: block; }
.live-response-label {
  font-family: var(--font-mono);
  font-size: 0.67rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  padding: 10px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.live-response-text {
  padding: 18px 20px;
  font-size: 0.92rem;
  color: var(--text);
  line-height: 1.7;
  white-space: pre-wrap;
  background: var(--bg);
}
.live-response-blocked {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-dim);
  border-left: 3px solid rgba(248,113,113,0.3);
}

/* Example button variants */
.example-btn-clean {
  border-color: rgba(74,222,128,0.18) !important;
  color: var(--crystalline) !important;
}
.example-btn-clean:hover {
  background: rgba(74,222,128,0.07) !important;
  border-color: rgba(74,222,128,0.35) !important;
}
.live-examples-label-sub {
  font-size: 0.78rem;
  color: var(--text-mute);
  margin-top: 4px;
  margin-bottom: 12px;
}

.live-error {
  display: none;
  padding: 16px 20px;
  background: var(--plasma-dim);
  border: 1px solid rgba(248,113,113,0.2);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--plasma);
  margin-bottom: 20px;
}
.live-error.visible { display: block; }

/* ── ARCHITECTURE CALLOUT ────────────────────────────────────────────────────── */
.arch-callout {
  background: linear-gradient(135deg, rgba(56,189,248,0.04), rgba(56,189,248,0.01));
  border: 1px solid rgba(56,189,248,0.15);
  border-left: 3px solid var(--fluid);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 36px 44px;
}
.arch-callout-head {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 14px;
}
.arch-callout-body {
  font-size: 0.9rem;
  color: var(--text-dim);
  line-height: 1.75;
  max-width: 680px;
}

/* ── VVC BOX ─────────────────────────────────────────────────────────────────── */
.vvc-box {
  background: linear-gradient(135deg, rgba(56,189,248,0.04), rgba(129,140,248,0.03));
  border: 1px solid var(--border);
  border-left: 3px solid var(--fluid);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 26px 32px;
  margin-top: 32px;
}
.vvc-label {
  font-family: var(--font-mono);
  font-size: 0.67rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--fluid);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.vvc-text { font-size: 0.9rem; line-height: 1.7; color: var(--text); }
.vvc-text strong { color: var(--white); }

/* ── AXIOM SECTION ───────────────────────────────────────────────────────────── */
.axiom-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.axiom-stat-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 40px;
}
.axiom-stat {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 16px;
  text-align: center;
}
.axiom-stat-num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1;
  margin-bottom: 6px;
}
.axiom-stat-label { font-size: 0.7rem; color: var(--text-dim); line-height: 1.4; }

.family-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 0.76rem;
}
.family-table th {
  text-align: left;
  color: var(--text-mute);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 9px 10px;
  border-bottom: 1px solid var(--border);
}
.family-table td {
  padding: 9px 10px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}
.family-table tr:last-child td { border-bottom: none; }
.family-table tr:hover td { background: var(--surface2); }
.family-table .rank-1 { }
.family-table .rank-1 td { color: var(--plasma); font-weight: 700; }

.stability-badge {
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 2px 6px;
  border-radius: 3px;
}
.stability-severe   { color: var(--plasma);  background: var(--plasma-dim);  border: 1px solid rgba(248,113,113,0.2); }
.stability-elevated { color: var(--gaseous); background: var(--gaseous-dim); border: 1px solid rgba(251,191,36,0.2); }

/* ── PRODUCTS ────────────────────────────────────────────────────────────────── */
.product-card-header {
  margin-bottom: 20px;
}
.product-name {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 4px;
}
.product-version {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-mute);
  letter-spacing: 0.04em;
}
.product-desc {
  font-size: 0.87rem;
  color: var(--text-dim);
  line-height: 1.7;
  margin-bottom: 24px;
}
.product-links { display: flex; flex-wrap: wrap; gap: 10px; }

.embargo-card {
  border-color: rgba(248,113,113,0.15);
  background: linear-gradient(160deg, rgba(248,113,113,0.03) 0%, var(--surface) 50%);
}
.embargo-card-timer {
  margin: 16px 0;
  padding: 16px 18px;
  background: rgba(220,38,38,0.06);
  border: 1px solid rgba(220,38,38,0.15);
  border-radius: var(--radius-sm);
}
.embargo-lift-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--plasma);
  text-transform: uppercase;
  margin-bottom: 6px;
}
#product-countdown {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 800;
  color: #fca5a5;
  letter-spacing: 0.04em;
}
.embargo-desc {
  font-size: 0.78rem;
  color: rgba(248,113,113,0.4);
  margin-top: 8px;
}

/* ── TRUTHFORGE CARD ────────────────────────────────────────────────────────── */
.truthforge-card {
  background: linear-gradient(160deg, rgba(129,140,248,0.04) 0%, var(--surface) 60%);
  border-color: rgba(129,140,248,0.15);
}
.truthforge-card:hover {
  border-color: rgba(129,140,248,0.35);
  box-shadow: 0 0 30px rgba(129,140,248,0.06);
}

/* ── DOI PILLS ──────────────────────────────────────────────────────────────── */
.doi-pill {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text-dim);
  gap: 4px;
}
.doi-pill a { color: inherit; }
.doi-pill a:hover { color: var(--fluid); }

/* ── LAYER ARCHITECTURE ──────────────────────────────────────────────────────── */
.layer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.layer-block {
  background: var(--surface2);
  padding: 28px 32px;
}
.layer-head {
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
  font-size: 0.95rem;
}
.layer-head .layer-badge {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 3px;
  margin-left: 8px;
  vertical-align: middle;
}
.layer-badge-active { color: var(--fluid); background: var(--fluid-dim); border: 1px solid rgba(56,189,248,0.2); }
.layer-badge-other  { color: var(--text-mute); background: transparent; border: 1px solid var(--border); }
.layer-body {
  font-size: 0.85rem;
  color: var(--text-dim);
  line-height: 1.7;
}

/* ── CONTACT ─────────────────────────────────────────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  max-width: 700px;
}
.contact-col-head {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-mute);
  margin-bottom: 14px;
}
.contact-email {
  color: var(--fluid);
  font-size: 0.95rem;
  display: block;
  margin-bottom: 8px;
  transition: color var(--transition);
}
.contact-email:hover { color: var(--white); }
.contact-note {
  font-size: 0.8rem;
  color: var(--text-mute);
  line-height: 1.6;
}

/* ── FOOTER ──────────────────────────────────────────────────────────────────── */
footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 56px 28px 40px;
}
.footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}
.footer-logo {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.06em;
  margin-bottom: 12px;
  text-transform: uppercase;
}
.footer-sub {
  font-size: 0.82rem;
  color: var(--text-mute);
  line-height: 1.7;
  max-width: 280px;
}
.footer-head {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--text-mute);
  text-transform: uppercase;
  margin-bottom: 16px;
}
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 10px; }
.footer-links a {
  font-size: 0.82rem;
  color: var(--text-dim);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--white); }
.footer-bottom {
  max-width: 1120px;
  margin: 0 auto;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-legal { font-size: 0.73rem; color: var(--text-mute); }

.cage-pill {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-mute);
  background: var(--surface2);
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
}

/* ── UTILITY ─────────────────────────────────────────────────────────────────── */
.mt-8  { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-48 { margin-top: 48px; }
.mb-4  { margin-bottom: 4px; }
.mb-8  { margin-bottom: 8px; }
.flex  { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.gap-8  { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.items-center { align-items: center; }
.text-center { text-align: center; }
.hidden { display: none; }

.separator {
  border: none;
  border-top: 1px solid var(--border);
  margin: 56px 0;
}

.demo-loading {
  text-align: center;
  padding: 60px 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-mute);
}

/* Regime legend (compact, for measurement section) */
.regime-legend {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px;
}
.regime-legend-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
}
.regime-legend-sym { font-size: 1.2rem; flex-shrink: 0; line-height: 1.2; }
.regime-legend-name { font-weight: 700; font-size: 0.82rem; margin-bottom: 3px; }
.regime-legend-desc { font-size: 0.75rem; color: var(--text-dim); line-height: 1.4; }

/* ── PRINCIPLE CARDS (How It Works alt) ─────────────────────────────────────── */
.principle-card {
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color var(--transition);
}
.principle-card:hover { border-color: var(--border2); }
.principle-num {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--text-mute);
  margin-bottom: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.principle-head {
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
}
.principle-body { font-size: 0.85rem; color: var(--text-dim); line-height: 1.65; }

/* ── LIVE DEMO AUTHENTICITY + EXAMPLES ──────────────────────────────────────── */
.live-authenticity-note {
  background: rgba(74,222,128,0.05);
  border: 1px solid rgba(74,222,128,0.15);
  border-left: 3px solid rgba(74,222,128,0.5);
  border-radius: var(--radius);
  padding: 14px 18px;
  font-size: 0.85rem;
  color: var(--text);
  line-height: 1.6;
  margin-bottom: 24px;
}

.live-examples {
  margin-bottom: 24px;
}
.live-examples-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-mute);
  margin-bottom: 12px;
}
.live-examples-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.example-btn {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border2);
  background: var(--surface2);
  color: var(--text-dim);
  cursor: pointer;
  transition: all 0.18s ease;
  white-space: nowrap;
}
.example-btn:hover {
  border-color: var(--gaseous);
  color: var(--gaseous);
  background: rgba(251,191,36,0.06);
}

/* ── REGIME COLORS — BOLDER (static demo + live result) ─────────────────────── */

/* Static demo: thicker colored left border per regime */
.chat-exchange {
  border-left-width: 3px !important;
}

/* Live result: colored left accent + colored border */
.live-result {
  border-left-width: 3px;
}
.live-result[data-regime="CRYSTALLINE"] {
  border-color: rgba(74,222,128,0.5);
  border-left-color: var(--crystalline);
}
.live-result[data-regime="FLUID"] {
  border-color: rgba(56,189,248,0.5);
  border-left-color: var(--fluid);
}
.live-result[data-regime="GASEOUS"] {
  border-color: rgba(251,191,36,0.5);
  border-left-color: var(--gaseous);
}
.live-result[data-regime="PLASMA"] {
  border-color: rgba(248,113,113,0.5);
  border-left-color: var(--plasma);
}
.live-result-msg {
  font-size: 0.9rem;
  color: var(--text) !important;
}

/* ── FOOTER GRID: 4 columns now ──────────────────────────────────────────────── */
.footer-inner {
  grid-template-columns: 2fr 1fr 1fr 1fr !important;
}

/* ── SOCIAL LINKS ────────────────────────────────────────────────────────────── */
.footer-social {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.social-link {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.82rem;
  color: var(--text-dim);
  text-decoration: none;
  transition: color var(--transition);
}
.social-link:hover {
  color: var(--white);
}
.social-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  opacity: 0.7;
  transition: opacity var(--transition);
}
.social-link:hover .social-icon {
  opacity: 1;
}

/* ── SCROLLBAR ───────────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--border3); }

/* ── RESPONSIVE ──────────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .how-grid { grid-template-columns: 1fr; }
  .rlhf-grid { grid-template-columns: 1fr; }
  .axiom-grid { grid-template-columns: 1fr; }
  .layer-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr !important; }
  .contact-grid { grid-template-columns: 1fr; gap: 28px; }
}
@media (max-width: 700px) {
  .nav-links { display: none; }
  .hero { padding: 80px 0 60px; }
  .section { padding: 64px 0; }
  .container { padding: 0 20px; }
  .hero-stats { flex-direction: column; max-width: 100%; }
  .stat-block { border-right: none; border-bottom: 1px solid var(--border); }
  .stat-block:last-child { border-bottom: none; }
  .axiom-stat-row { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .footer-sub { max-width: 100%; }
  .regimes-grid { grid-template-columns: 1fr 1fr; }
  .not-grid { grid-template-columns: 1fr; }
}
/* ── TOLKAMAK / CURRENT RESEARCH ─────────────────────────────────────────── */
:root {
  --fusion:      #00d4ff;
  --fusion-glow: rgba(0, 212, 255, 0.15);
}

.section-research { position: relative; overflow: hidden; }

.fusion-orb {
  position: absolute;
  width: 700px;
  height: 700px;
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  animation: fusion-orb-breathe 5s ease-in-out infinite;
}
@keyframes fusion-orb-breathe {
  0%, 100% { background: radial-gradient(ellipse at center, rgba(0,212,255,0.05) 0%, transparent 65%); }
  50%       { background: radial-gradient(ellipse at center, rgba(0,212,255,0.11) 0%, transparent 65%); }
}

.fusion-card {
  max-width: 820px;
  margin: 0 auto;
  border: 1px solid rgba(0,212,255,0.18);
  border-radius: var(--radius);
  background: var(--surface);
  position: relative;
  overflow: hidden;
  animation: fusion-card-breathe 4.5s ease-in-out infinite;
}
@keyframes fusion-card-breathe {
  0%, 100% { box-shadow: 0 0 24px rgba(0,212,255,0.05), inset 0 0 24px rgba(0,212,255,0.02); }
  50%       { box-shadow: 0 0 48px rgba(0,212,255,0.14), inset 0 0 32px rgba(0,212,255,0.04); }
}

.fusion-card-header {
  padding: 28px 32px 22px;
  border-bottom: 1px solid rgba(0,212,255,0.12);
  background: linear-gradient(135deg, rgba(0,212,255,0.04) 0%, transparent 60%);
}

.fusion-badge {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--fusion);
  text-transform: uppercase;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 9px;
}
.fusion-badge::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--fusion);
  flex-shrink: 0;
  animation: fusion-dot-pulse 2.2s ease-in-out infinite;
}
@keyframes fusion-dot-pulse {
  0%, 100% { opacity: 1;   box-shadow: 0 0 4px rgba(0,212,255,0.7); }
  50%       { opacity: 0.5; box-shadow: 0 0 10px rgba(0,212,255,1);  }
}

.fusion-name {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}

.fusion-version {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-mute);
  letter-spacing: 0.07em;
}

.fusion-body {
  padding: 28px 32px 32px;
}
.fusion-body p {
  font-size: 0.95rem;
  color: var(--text-dim);
  line-height: 1.78;
  margin-bottom: 20px;
}

.fusion-stat-row {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 22px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin: 4px 0 24px;
  flex-wrap: wrap;
}
.fusion-stat-num {
  font-family: var(--font-mono);
  font-size: 3rem;
  font-weight: 900;
  color: var(--fusion);
  letter-spacing: -0.04em;
  line-height: 1;
  text-shadow: 0 0 24px rgba(0,212,255,0.35);
  flex-shrink: 0;
}
.fusion-stat-label {
  font-size: 0.88rem;
  color: var(--text-dim);
  line-height: 1.45;
  max-width: 240px;
}
.fusion-stat-vs {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-mute);
  margin-left: auto;
  letter-spacing: 0.04em;
}

.fusion-domains {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 24px;
}
.fusion-domain-tag {
  font-family: var(--font-mono);
  font-size: 0.67rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 5px 13px;
  border: 1px solid rgba(0,212,255,0.22);
  border-radius: 4px;
  color: rgba(0,212,255,0.72);
  background: rgba(0,212,255,0.04);
}

.fusion-links {
  display: flex;
  gap: 24px;
  margin-top: 4px;
  flex-wrap: wrap;
}
.fusion-link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--fusion);
  text-decoration: none;
  letter-spacing: 0.05em;
  border-bottom: 1px solid rgba(0,212,255,0.3);
  padding-bottom: 2px;
  transition: opacity 0.2s;
}
.fusion-link:hover { opacity: 0.7; }

.fusion-disclaimer {
  font-size: 0.78rem;
  color: var(--text-mute);
  font-style: italic;
  margin-top: 22px !important;
  margin-bottom: 0 !important;
}

@media (max-width: 480px) {
  h1 { font-size: 2.2rem; }
  .regimes-grid { grid-template-columns: 1fr; }
}