/* ═══════════════════════════════════════════════════════
   XXXIII — Monument Design System v5
   White marble / Dark obsidian. Themeable. Darker type.
   ═══════════════════════════════════════════════════════ */

/* ── Theme Variables ── */
:root {
  /* surfaces */
  --bg:             #ffffff;
  --bg-alt:         #f7f6f3;
  --bg-card:        #ffffff;
  --bg-hash:        #f5f4f0;
  --bg-panel:       #fdfcfa;
  --bg-terminal:    #1a1a1a;

  /* borders */
  --border:         #e0ddd6;
  --border-light:   #eae8e3;

  /* text — DARKENED */
  --text:           #111111;
  --text-secondary: #444444;
  --text-tertiary:  #666666;
  --text-muted:     #888888;
  --text-faint:     #aaaaaa;

  /* accent */
  --gold:           #B08D57;
  --gold-glow:      rgba(176,141,87,0.08);

  /* special */
  --code:           #555555;
  --link:           #111111;
  --nav-bg:         rgba(255,255,255,0.96);
  --shadow:         rgba(0,0,0,0.04);
  --watermark:      rgba(0,0,0,0.027);
  --pass:           #3a9970;
  --fail:           #c55050;
  --terminal-text:  #d0d0d0;
}

[data-theme="dark"] {
  /* surfaces */
  --bg:             #0e0e0e;
  --bg-alt:         #161616;
  --bg-card:        #1a1a1a;
  --bg-hash:        #1e1e1e;
  --bg-panel:       #171717;
  --bg-terminal:    #0a0a0a;

  /* borders */
  --border:         #2a2a2a;
  --border-light:   #222222;

  /* text */
  --text:           #e8e6e1;
  --text-secondary: #c8c5be;
  --text-tertiary:  #a09d96;
  --text-muted:     #7a7872;
  --text-faint:     #5a5854;

  /* accent */
  --gold:           #c9a76c;
  --gold-glow:      rgba(201,167,108,0.10);

  /* special */
  --code:           #b0ada6;
  --link:           #e8e6e1;
  --nav-bg:         rgba(14,14,14,0.96);
  --shadow:         rgba(0,0,0,0.3);
  --watermark:      rgba(255,255,255,0.025);
  --pass:           #5ec49a;
  --fail:           #e06060;
  --terminal-text:  #c8c8c8;
}

/* ── Reset ── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-weight: 300;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background 0.35s ease, color 0.35s ease;
}
a { color: var(--link); text-decoration: none; }
a:hover { color: var(--gold); }
code, pre { font-family: 'IBM Plex Mono', monospace; }
img { max-width: 100%; display: block; }

/* ── Nav ── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem 3rem;
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: box-shadow 0.3s, background 0.35s;
}
.nav.scrolled { box-shadow: 0 1px 0 var(--border); }
.nav-brand {
  font-family: 'Cinzel', serif; font-weight: 600; font-size: 1.1rem;
  letter-spacing: 0.18em; color: var(--text);
}
.nav-links { display: flex; gap: 2rem; }
.nav-links a {
  font-size: 0.78rem; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--text-tertiary); font-weight: 400;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--gold); }
.nav-actions { display: flex; gap: 1rem; align-items: center; }
.nav-link-btn {
  font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--text-muted); transition: color 0.2s;
}
.nav-link-btn:hover { color: var(--gold); }
.nav-toggle {
  display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px;
}
.nav-toggle span { display: block; width: 22px; height: 1.5px; background: var(--text); transition: 0.2s; }

/* ── Theme Toggle ── */
.theme-toggle {
  background: none; border: 1px solid var(--border);
  cursor: pointer; padding: 0.35rem 0.5rem;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--text-muted);
  transition: color 0.2s, border-color 0.2s;
  border-radius: 2px;
}
.theme-toggle:hover { color: var(--gold); border-color: var(--gold); }
.theme-toggle svg { width: 16px; height: 16px; }
.theme-toggle .icon-moon { display: block; }
.theme-toggle .icon-sun  { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun  { display: block; }

/* ── Hero ── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  text-align: center;
  padding: 6rem 2rem 4rem;
  overflow: hidden;
  background: var(--bg);
}
.hero-watermark {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  font-family: 'Cinzel', serif;
  font-size: clamp(14rem, 26vw, 36rem);
  font-weight: 700;
  color: var(--watermark);
  letter-spacing: 0.1em;
  white-space: nowrap;
  pointer-events: none;
  user-select: none;
}
.hero-inner { position: relative; z-index: 1; max-width: 640px; }
.hero-title {
  font-family: 'Cinzel', serif;
  font-size: clamp(3.2rem, 7vw, 5.5rem);
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--text);
  margin-bottom: 1.2rem;
}
.hero-subtitle {
  font-family: 'Cinzel', serif;
  font-size: clamp(0.85rem, 1.8vw, 1.12rem);
  font-weight: 400;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 3rem;
}
.hero-verse { margin-bottom: 3rem; }
.hero-verse p {
  font-size: 1.05rem; font-weight: 300; color: var(--text-secondary); line-height: 2;
}
.hero-actions { display: flex; gap: 1.5rem; justify-content: center; flex-wrap: wrap; margin-bottom: 4rem; }
.hero-chain {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.7rem; letter-spacing: 0.2em; color: var(--text-faint);
  text-transform: uppercase;
}

/* ── Buttons ── */
.btn {
  display: inline-block; padding: 0.75rem 2rem;
  font-family: 'Cinzel', serif; font-size: 0.75rem; font-weight: 500;
  letter-spacing: 0.18em; text-transform: uppercase;
  border: 1px solid var(--border); color: var(--text);
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.btn:hover { border-color: var(--gold); color: var(--gold); }
.btn-primary { background: var(--text); color: var(--bg); border-color: var(--text); }
.btn-primary:hover { background: var(--gold); border-color: var(--gold); color: #fff; }
.btn-sm { padding: 0.5rem 1.4rem; font-size: 0.7rem; }

/* ── Sections ── */
.sect {
  padding: 8rem 2rem;
  background: var(--bg);
  transition: background 0.35s;
}
.sect-stone { background: var(--bg-alt); }
.sect-inner { max-width: 900px; margin: 0 auto; }
.sect-centered { text-align: center; }
.sect-numeral {
  display: block;
  font-family: 'Cinzel', serif;
  font-size: 0.72rem; font-weight: 500;
  letter-spacing: 0.35em; color: var(--gold);
  margin-bottom: 1rem;
  text-align: center;
}
.sect-heading {
  font-family: 'Cinzel', serif;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 600; letter-spacing: 0.1em;
  color: var(--text); margin-bottom: 1.2rem;
  text-align: center;
}
.sect-lead {
  font-size: 1rem; color: var(--text-tertiary); max-width: 520px;
  margin: 0 auto 3.5rem; line-height: 1.9;
  text-align: center;
}

/* ── Declaration ── */
.declaration-text p {
  font-family: 'Cinzel', serif;
  font-size: clamp(1.05rem, 2.2vw, 1.35rem);
  font-weight: 400; letter-spacing: 0.06em;
  line-height: 2.2; color: var(--text-secondary);
  margin-bottom: 1.5rem;
}
.declaration-axiom {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.8rem; letter-spacing: 0.14em;
  color: var(--text-muted); margin-top: 2rem;
}

/* ── Three Pillars ── */
.pillars {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 2rem; margin-top: 3rem;
}
.pillar {
  text-align: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 2.5rem 2rem 2rem;
  transition: border-color 0.2s, background 0.35s;
}
.pillar:hover { border-color: var(--gold); }
.pillar-numeral {
  font-family: 'Cinzel', serif;
  font-size: 0.68rem; letter-spacing: 0.3em; color: var(--gold);
  display: block; margin-bottom: 1.2rem;
}
.pillar-name {
  font-family: 'Cinzel', serif;
  font-size: 1.15rem; font-weight: 600;
  letter-spacing: 0.12em; margin-bottom: 1rem;
  color: var(--text);
}
.pillar-text {
  font-size: 0.88rem; color: var(--text-tertiary); line-height: 1.85;
  margin-bottom: 1.8rem; max-width: 260px; margin-left: auto; margin-right: auto;
}
.pillar-hash {
  display: flex; align-items: center; gap: 0.5rem;
  margin-bottom: 0.6rem;
  background: var(--bg-hash); padding: 0.55rem 0.8rem;
  border-radius: 2px;
  transition: background 0.35s;
}
.pillar-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.6rem; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--text-muted);
  min-width: 76px; text-align: left; white-space: nowrap;
}
.pillar-hash code {
  font-size: 0.62rem; color: var(--code);
  word-break: break-all; flex: 1; text-align: left;
  overflow: hidden; text-overflow: ellipsis;
}

/* ── Copy Icon ── */
.copy-icon {
  background: none; border: none; cursor: pointer;
  color: var(--text-faint); padding: 2px; display: inline-flex; align-items: center;
  transition: color 0.2s; flex-shrink: 0;
}
.copy-icon:hover { color: var(--gold); }
.copy-icon.copied { color: var(--pass); }

/* ── Pipeline ── */
.pipeline {
  display: flex; align-items: center; justify-content: center;
  gap: 0.4rem; flex-wrap: wrap;
  margin: 2rem auto 2.5rem;
}
.pipe-stage {
  padding: 1.4rem 1.2rem;
  border: 1px solid var(--border);
  text-align: center;
  cursor: pointer;
  transition: border-color 0.25s, background 0.25s, box-shadow 0.25s;
  min-width: 110px;
  background: var(--bg-card);
}
.pipe-stage:hover, .pipe-stage.active {
  border-color: var(--gold);
  box-shadow: 0 2px 12px var(--gold-glow);
}
.pipe-stage.active { background: var(--bg-panel); }
.pipe-stage-final { border-color: var(--gold); }
.pipe-numeral {
  display: block;
  font-family: 'Cinzel', serif;
  font-size: 0.62rem; letter-spacing: 0.2em; color: var(--gold);
  margin-bottom: 0.4rem;
}
.pipe-name {
  display: block;
  font-family: 'Cinzel', serif;
  font-size: 0.85rem; font-weight: 500;
  letter-spacing: 0.06em; color: var(--text);
}
.pipe-meta {
  display: block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.58rem; color: var(--text-muted); letter-spacing: 0.03em;
  margin-top: 0.35rem;
}
.pipe-sep { color: var(--border); font-size: 0.9rem; padding: 0 0.15rem; }

.stage-panel {
  max-height: 0; overflow: hidden; opacity: 0;
  transition: max-height 0.4s ease, opacity 0.3s, padding 0.3s;
  max-width: 520px; margin: 0 auto;
  border-top: 0 solid transparent;
  text-align: left;
}
.stage-panel.open {
  max-height: 300px; opacity: 1;
  padding: 1.5rem 1.5rem; margin-top: 1.5rem;
  border: 1px solid var(--border);
  background: var(--bg-panel);
}
.sp-row {
  display: flex; align-items: center; gap: 1rem;
  padding: 0.4rem 0; font-size: 0.82rem;
}
.sp-row span:first-child {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.68rem; color: var(--text-muted); min-width: 90px;
  text-transform: uppercase; letter-spacing: 0.06em;
}
.sp-row code { font-size: 0.72rem; color: var(--code); word-break: break-all; }
.sp-row a { color: var(--gold); }
.sp-row a:hover { text-decoration: underline; }

.pipeline-axiom {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem; color: var(--text-faint); letter-spacing: 0.1em;
  margin-top: 2.5rem;
}

/* ── Works ── */
.works {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 2.5rem; margin-top: 2.5rem;
}
.monolith {
  background: var(--bg-card); border: 1px solid var(--border);
  padding: 2.5rem 2rem;
  text-align: center;
  transition: border-color 0.2s, background 0.35s;
}
.monolith:hover { border-color: var(--gold); }
.monolith-title {
  font-family: 'Cinzel', serif;
  font-size: 1.25rem; font-weight: 600;
  letter-spacing: 0.1em; margin-bottom: 0.8rem;
  color: var(--text);
}
.monolith-edition {
  display: inline-block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.65rem; letter-spacing: 0.12em; color: var(--text-muted);
  text-transform: uppercase;
  margin-right: 0.6rem;
}
.badge-frozen {
  display: inline-block;
  font-family: 'Cinzel', serif;
  font-size: 0.58rem; font-weight: 600;
  letter-spacing: 0.22em;
  color: var(--gold);
  padding: 0.2rem 0.7rem;
  border: 1px solid var(--gold);
  vertical-align: middle;
}
.monolith-stats {
  margin: 1.8rem 0;
  display: flex; flex-wrap: wrap; gap: 0.5rem;
  justify-content: center;
}
.monolith-stats span {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.65rem; color: var(--text-tertiary); letter-spacing: 0.04em;
  background: var(--bg-hash); padding: 0.3rem 0.7rem;
  border-radius: 2px;
  transition: background 0.35s;
}
.monolith-roots { margin: 1.5rem 0; }
.roots-toggle {
  background: none; border: 1px solid var(--border); cursor: pointer;
  font-family: 'Cinzel', serif; font-size: 0.7rem;
  letter-spacing: 0.14em; text-transform: uppercase;
  padding: 0.5rem 1.5rem; color: var(--text-muted);
  transition: border-color 0.2s, color 0.2s;
}
.roots-toggle:hover, .roots-toggle.open { border-color: var(--gold); color: var(--gold); }
.roots-panel {
  max-height: 0; overflow: hidden; opacity: 0;
  transition: max-height 0.4s ease, opacity 0.3s, padding 0.3s;
  text-align: left;
}
.roots-panel.open {
  max-height: 500px; opacity: 1;
  padding: 1.2rem 1rem;
  margin-top: 1rem;
  background: var(--bg-hash);
  border: 1px solid var(--border-light);
  transition: background 0.35s;
}
.rp-row {
  display: flex; align-items: center; gap: 0.8rem;
  padding: 0.35rem 0; font-size: 0.75rem;
}
.rp-row span:first-child {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.62rem; color: var(--text-muted); min-width: 78px;
  letter-spacing: 0.06em; text-transform: uppercase;
}
.rp-row code { font-size: 0.68rem; color: var(--code); word-break: break-all; }
.monolith-links {
  display: flex; gap: 1.2rem; margin-top: 1.8rem;
  flex-wrap: wrap; justify-content: center;
}
.monolith-links a {
  font-size: 0.7rem; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--text-muted); border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;
  padding-bottom: 2px;
}
.monolith-links a:hover { color: var(--gold); border-bottom-color: var(--gold); }

/* ── Contracts (Inscriptions) ── */
.inscriptions {
  display: flex; flex-direction: column; gap: 0;
  margin-top: 2.5rem;
  max-width: 640px; margin-left: auto; margin-right: auto;
  text-align: left;
}
.inscription {
  border-top: 1px solid var(--border);
  padding: 1.4rem 1.2rem;
  cursor: pointer;
  transition: background 0.2s;
}
.inscription:last-child { border-bottom: 1px solid var(--border); }
.inscription:hover { background: var(--bg-panel); }
.inscription.open { background: var(--bg-panel); }
.inscription-name {
  font-family: 'Cinzel', serif;
  font-size: 0.95rem; font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--text);
  display: flex; justify-content: space-between; align-items: center;
}
.inscription-name::after {
  content: '+';
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.8rem; color: var(--text-faint);
  transition: color 0.2s;
}
.inscription.open .inscription-name::after { content: '\2013'; color: var(--gold); }
.inscription-detail {
  max-height: 0; overflow: hidden; opacity: 0;
  transition: max-height 0.4s ease, opacity 0.3s, padding 0.3s;
}
.inscription-detail.open {
  max-height: 280px; opacity: 1;
  padding-top: 1rem;
}
.id-row {
  display: flex; align-items: baseline; gap: 1rem;
  padding: 0.35rem 0; font-size: 0.82rem;
}
.id-row span:first-child {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.65rem; color: var(--text-muted);
  min-width: 60px; text-transform: uppercase;
  letter-spacing: 0.06em;
}
.id-row a {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.72rem; color: var(--gold);
  word-break: break-all;
}
.id-row a:hover { text-decoration: underline; }
.id-row code { font-size: 0.72rem; color: var(--code); }
.status-verified {
  color: var(--gold); font-family: 'IBM Plex Mono', monospace;
  font-size: 0.7rem;
}
.contract-footer {
  margin-top: 3.5rem; text-align: center;
}
.contract-footer p {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.7rem; color: var(--text-faint); letter-spacing: 0.06em;
  margin-bottom: 0.5rem;
}
.cf-wallet { margin-top: 1.2rem; }
.cf-wallet a {
  font-family: 'IBM Plex Mono', monospace;
  color: var(--gold); font-size: 0.72rem;
}

/* ── Verifier ── */
.verifier { max-width: 500px; margin: 0 auto 3.5rem; }
.verifier-drop {
  border: 1.5px dashed var(--border);
  padding: 3.5rem 2rem;
  text-align: center;
  transition: border-color 0.25s, background 0.25s;
  cursor: default;
  background: var(--bg-card);
}
.verifier-drop svg { color: var(--text-faint); margin: 0 auto 1.2rem; }
.verifier-drop p { font-size: 0.9rem; color: var(--text-tertiary); }
.verifier-drop.dragover { border-color: var(--gold); background: var(--bg-panel); }
.verifier-hint {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.65rem; color: var(--text-faint); margin-top: 0.8rem; letter-spacing: 0.04em;
}

.verifier-result { margin-top: 1.5rem; }
.vr-status {
  display: flex; align-items: center; gap: 0.6rem;
  font-family: 'Cinzel', serif; font-size: 0.95rem;
  padding: 0.8rem 0; letter-spacing: 0.06em;
  justify-content: center;
}
.vr-status.pass { color: var(--pass); }
.vr-status.fail { color: var(--fail); }
.vr-compare { margin-top: 0.8rem; }
.vr-row {
  display: flex; align-items: center; gap: 1rem;
  padding: 0.3rem 0; font-size: 0.78rem;
  justify-content: center;
}
.vr-row span { font-family: 'IBM Plex Mono', monospace; font-size: 0.65rem; color: var(--text-muted); min-width: 70px; text-align: right; }
.vr-row code { font-size: 0.7rem; color: var(--code); word-break: break-all; }

.verifier-cli { max-width: 500px; margin: 0 auto; }
.verifier-lead {
  font-family: 'Cinzel', serif;
  font-size: 1.05rem; letter-spacing: 0.1em;
  margin-bottom: 1.5rem;
  color: var(--text);
}
.terminal {
  background: var(--bg-terminal); color: var(--terminal-text);
  padding: 1.8rem 2rem;
  overflow-x: auto;
  border-radius: 3px;
}
.terminal code, .terminal pre {
  font-size: 0.78rem; line-height: 2; color: var(--terminal-text);
}
.verifier-checks {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.72rem; color: var(--text-muted); letter-spacing: 0.06em;
  margin-top: 1rem;
}
.verifier-axiom {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem; color: var(--text-faint); letter-spacing: 0.1em;
  margin-top: 1.5rem;
}
.verifier-links {
  display: flex; gap: 1rem; justify-content: center;
  flex-wrap: wrap; margin-top: 2.5rem;
}

/* ── Citation ── */
.cite-title {
  font-family: 'Cinzel', serif;
  font-size: clamp(0.95rem, 2vw, 1.2rem);
  font-weight: 400; letter-spacing: 0.06em;
  line-height: 1.8; color: var(--text-secondary);
  margin-bottom: 2.5rem;
}
.cite-row {
  display: flex; gap: 3rem; justify-content: center;
  flex-wrap: wrap; margin-bottom: 2.5rem;
}
.cite-block { text-align: center; }
.cite-label {
  display: block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.62rem; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--text-faint);
  margin-bottom: 0.4rem;
}
.cite-value {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.82rem; color: var(--gold);
}
.cite-value:hover { text-decoration: underline; }
.cite-expand {
  max-width: 560px; margin: 0 auto 2rem;
  text-align: left;
}
.cite-expand summary {
  font-family: 'Cinzel', serif;
  font-size: 0.78rem; letter-spacing: 0.14em;
  text-transform: uppercase; cursor: pointer;
  color: var(--text-muted); list-style: none;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border);
}
.cite-expand summary::-webkit-details-marker { display: none; }
.cite-expand summary::before { content: '+ '; color: var(--gold); }
.cite-expand[open] summary::before { content: '– '; }
.cite-code {
  background: var(--bg-hash); padding: 1.2rem 1.5rem;
  font-size: 0.72rem; line-height: 1.8; color: var(--code);
  overflow-x: auto; border: 1px solid var(--border-light);
  margin-top: 0.5rem;
  transition: background 0.35s;
}
.cite-note {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.7rem; color: var(--text-faint); letter-spacing: 0.06em;
  margin-top: 1rem;
}
.cite-pub-status {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.68rem; color: var(--gold); letter-spacing: 0.08em;
  margin-bottom: 2rem; opacity: 0.85;
}
.cite-keywords {
  font-size: 0.62rem; color: var(--text-faint); letter-spacing: 0.04em;
  line-height: 2; max-width: 560px; margin: 0.5rem auto 0;
  opacity: 0.7;
}
.cite-links {
  display: flex; gap: 1.5rem; justify-content: center;
  flex-wrap: wrap; margin-top: 2rem;
}
.cite-links a {
  font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--text-muted); transition: color 0.2s;
}
.cite-links a:hover { color: var(--gold); }

/* ── Footer ── */
.footer {
  padding: 5rem 2rem 3rem;
  text-align: center;
  border-top: 1px solid var(--border);
  background: var(--bg);
  transition: background 0.35s;
}
.footer-inner { max-width: 600px; margin: 0 auto; }
.footer-brand {
  font-family: 'Cinzel', serif;
  font-size: 1.6rem; font-weight: 700;
  letter-spacing: 0.25em; color: var(--text);
  margin-bottom: 0.8rem;
}
.footer-line {
  font-family: 'Cinzel', serif;
  font-size: 0.78rem; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--text-tertiary);
  margin-bottom: 0.4rem;
}
.footer-year {
  font-family: 'Cinzel', serif;
  font-size: 0.7rem; letter-spacing: 0.25em;
  color: var(--text-faint); margin-bottom: 0.6rem;
}
.footer-hashes {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.62rem; letter-spacing: 0.12em;
  color: var(--text-faint); margin-bottom: 2rem;
}
.footer-nav {
  display: flex; gap: 1.5rem; justify-content: center;
  flex-wrap: wrap; margin-bottom: 2rem;
}
.footer-nav a {
  font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--text-muted); transition: color 0.2s;
}
.footer-nav a:hover { color: var(--gold); }
.footer-copy {
  font-size: 0.65rem; color: var(--text-faint); letter-spacing: 0.04em;
}

/* ═══════════════════════════
   Responsive
   ═══════════════════════════ */

@media (max-width: 900px) {
  .pillars { grid-template-columns: 1fr; gap: 1.5rem; max-width: 400px; margin-left: auto; margin-right: auto; }
  .works { grid-template-columns: 1fr; gap: 1.5rem; max-width: 480px; margin-left: auto; margin-right: auto; }
  .pipeline { flex-direction: column; gap: 0; align-items: center; }
  .pipe-sep { transform: rotate(90deg); font-size: 0.8rem; margin: 0.2rem 0; }
  .pipe-stage { width: 100%; max-width: 260px; }
}

@media (max-width: 700px) {
  .nav { padding: 0.8rem 1.5rem; }
  .nav-links { display: none; }
  .nav.open .nav-links {
    display: flex; flex-direction: column;
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--bg); padding: 1.5rem 2rem;
    box-shadow: 0 2px 8px var(--shadow);
    gap: 1rem;
  }
  .nav-actions { display: none; }
  .nav-toggle { display: flex; }

  .hero { padding: 5rem 1.5rem 3rem; min-height: 90vh; }
  .hero-title { letter-spacing: 0.15em; }

  .sect { padding: 5rem 1.5rem; }
  .sect-heading { font-size: 1.4rem; }

  .cite-row { flex-direction: column; gap: 1.5rem; }
  .monolith { padding: 2rem 1.5rem; }
  .verifier-drop { padding: 2.5rem 1rem; }

  .id-row { flex-wrap: wrap; }
  .rp-row { flex-wrap: wrap; }
  .sp-row { flex-wrap: wrap; }
  .pillar-hash { flex-wrap: wrap; }
  .pillar { padding: 2rem 1.5rem; }
  .inscription { padding: 1.2rem 0.8rem; }
}

@media (max-width: 420px) {
  .hero-actions { flex-direction: column; align-items: center; }
  .hero-actions .btn { width: 100%; text-align: center; }
  .footer-nav { gap: 1rem; }
  .monolith-stats { gap: 0.4rem; }
}

/* ═══════════════════════════
   Protocol Demonstration Layer
   ═══════════════════════════ */

/* ── Protocol Badges ── */
.proto-badges {
  display: flex; gap: 0.6rem; justify-content: center;
  flex-wrap: wrap; margin-top: 2rem;
}
.proto-badge {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.58rem; letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
  border: 1px solid var(--border);
  padding: 0.25rem 0.7rem;
  border-radius: 2px;
  transition: border-color 0.2s, color 0.2s;
}
.proto-badge:hover { border-color: var(--gold); color: var(--text-muted); }

/* ── Protocol Layer (Provenance Stack) ── */
.prov-stack {
  display: flex; flex-direction: column; align-items: center;
  gap: 0; max-width: 460px; margin: 2.5rem auto;
}
.prov-layer {
  display: flex; align-items: center; gap: 1.2rem;
  width: 100%; padding: 1.1rem 1.6rem;
  border: 1px solid var(--border);
  background: var(--bg-card);
  transition: border-color 0.25s, background 0.35s;
}
.prov-layer:hover { border-color: var(--gold); }
.prov-layer-final { border-color: var(--gold); }
.prov-num {
  font-family: 'Cinzel', serif;
  font-size: 0.62rem; letter-spacing: 0.2em; color: var(--gold);
  min-width: 24px;
}
.prov-name {
  font-family: 'Cinzel', serif;
  font-size: 0.88rem; font-weight: 500;
  letter-spacing: 0.08em; color: var(--text);
  min-width: 100px;
}
.prov-desc {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.6rem; color: var(--text-muted); letter-spacing: 0.03em;
}
.prov-arrow {
  display: flex; justify-content: center;
  height: 24px; line-height: 0;
}
.prov-ref { margin-top: 2.5rem; }

/* ── Merkle Visualization ── */
.merkle-viz { max-width: 580px; margin: 2rem auto; }
.merkle-leaves {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 0.8rem;
}
.merkle-leaf {
  text-align: center;
  padding: 1.2rem 0.5rem;
  border: 1px solid var(--border);
  background: var(--bg-card);
  transition: border-color 0.25s, background 0.35s;
}
.merkle-leaf:hover { border-color: var(--gold); }
.ml-label {
  display: block;
  font-family: 'Cinzel', serif;
  font-size: 0.7rem; font-weight: 500;
  letter-spacing: 0.1em; color: var(--text);
  margin-bottom: 0.6rem;
}
.ml-hash {
  font-size: 0.58rem; color: var(--code);
  word-break: break-all;
}
.merkle-converge { text-align: center; margin-top: 0; }
.merkle-lines-svg { opacity: 0.5; }
.merkle-root-box {
  display: inline-block;
  padding: 1.3rem 2.5rem;
  border: 1px solid var(--gold);
  background: var(--bg-card);
  text-align: center;
  margin-top: -1px;
  transition: background 0.35s;
}
.mr-label {
  display: block;
  font-family: 'Cinzel', serif;
  font-size: 0.78rem; font-weight: 600;
  letter-spacing: 0.12em; color: var(--gold);
  margin-bottom: 0.5rem;
}
.mr-hash {
  font-size: 0.62rem; color: var(--code);
  word-break: break-all;
}
.hash-toggle-btn { margin-top: 1.5rem; }
.merkle-formula {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.7rem; color: var(--text-faint); letter-spacing: 0.04em;
  margin-top: 2rem;
}

/* ── State Machine ── */
.sm-flow {
  display: flex; align-items: center; justify-content: center;
  gap: 0; flex-wrap: wrap;
  margin: 2.5rem auto;
  max-width: 800px;
}
.sm-state {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.65rem; font-weight: 500;
  letter-spacing: 0.06em;
  padding: 0.65rem 0.9rem;
  border: 1px solid var(--border);
  color: var(--text);
  background: var(--bg-card);
  white-space: nowrap;
  transition: border-color 0.25s, background 0.35s;
}
.sm-state:hover { border-color: var(--gold); }
.sm-anchor { border-color: var(--gold); }
.sm-final { border-color: var(--gold); background: var(--bg-panel); color: var(--gold); }
.sm-end { border-color: var(--text-faint); color: var(--text-muted); opacity: 0.7; }
.sm-arrow {
  font-size: 0.75rem; color: var(--border);
  padding: 0 0.25rem;
  animation: sm-pulse 3s ease-in-out infinite;
}
@keyframes sm-pulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; color: var(--gold); }
}
.sm-terminals {
  display: flex; gap: 3rem; justify-content: center;
  margin-top: 2rem;
}
.sm-terminal-branch {
  display: flex; align-items: center; gap: 0.6rem;
  flex-wrap: wrap; justify-content: center;
}
.sm-branch-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.56rem; color: var(--text-faint);
  letter-spacing: 0.06em;
}
.sm-branch-sep { font-size: 0.85rem; color: var(--text-faint); }
.sm-branch-note {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.56rem; color: var(--text-faint);
  letter-spacing: 0.04em;
}
.sm-axiom {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.72rem; color: var(--text-faint); letter-spacing: 0.1em;
  margin-top: 2.5rem;
}

/* ── Contract Map ── */
.contract-map {
  max-width: 640px; margin: 0 auto 3rem;
  text-align: center;
}
.cm-row {
  display: flex; align-items: center; justify-content: center;
  gap: 0.3rem; flex-wrap: wrap;
}
.cm-node {
  display: inline-block;
  font-family: 'Cinzel', serif;
  font-size: 0.7rem; font-weight: 500;
  letter-spacing: 0.06em;
  padding: 0.55rem 0.9rem;
  border: 1px solid var(--border);
  color: var(--text);
  background: var(--bg-card);
  transition: border-color 0.25s, color 0.2s, background 0.35s;
  text-decoration: none;
}
.cm-node:hover { border-color: var(--gold); color: var(--gold); }
.cm-active { border-color: var(--gold); }
.cm-sep { color: var(--border); font-size: 0.8rem; padding: 0 0.1rem; }
.cm-branches {
  display: flex; flex-direction: column; align-items: center;
  margin-top: 0.3rem;
}
.cm-branch-line {
  width: 1px; height: 20px;
  background: var(--border);
}
.cm-sub-row {
  display: flex; gap: 0.6rem; flex-wrap: wrap; justify-content: center;
}

/* ── System Invariants ── */
.inv-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 1.2rem; margin-top: 2.5rem;
  max-width: 640px; margin-left: auto; margin-right: auto;
  text-align: left;
}
.inv-card {
  border: 1px solid var(--border);
  padding: 1.5rem;
  background: var(--bg-card);
  cursor: pointer;
  transition: border-color 0.25s, background 0.35s;
}
.inv-card:hover { border-color: var(--gold); }
.inv-card.open { border-color: var(--gold); background: var(--bg-panel); }
.inv-header {
  display: flex; align-items: center; gap: 0.8rem;
}
.inv-check { font-size: 1rem; color: var(--pass); font-weight: 600; }
.inv-name {
  font-family: 'Cinzel', serif;
  font-size: 0.82rem; font-weight: 500;
  letter-spacing: 0.08em; color: var(--text);
}
.inv-detail {
  max-height: 0; overflow: hidden; opacity: 0;
  transition: max-height 0.4s ease, opacity 0.3s, padding 0.3s;
}
.inv-card.open .inv-detail {
  max-height: 200px; opacity: 1;
  padding-top: 1rem;
}
.inv-detail p {
  font-size: 0.8rem; color: var(--text-tertiary); line-height: 1.8;
}

/* ── Reference Implementation ── */
.ref-impl {
  max-width: 500px; margin: 3.5rem auto;
  padding-top: 3.5rem;
  border-top: 1px solid var(--border);
}
.ri-heading {
  font-family: 'Cinzel', serif;
  font-size: 1.05rem; letter-spacing: 0.1em;
  margin-bottom: 0.8rem;
  color: var(--text);
}
.ri-lead {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.7rem; color: var(--text-muted); letter-spacing: 0.06em;
  margin-bottom: 1.5rem;
}
.ri-badges {
  display: flex; gap: 0.8rem; justify-content: center;
  flex-wrap: wrap; margin-top: 1.5rem;
}
.ri-badge {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.58rem; letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.3rem 0.8rem;
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.ri-pass { color: var(--pass); border-color: var(--pass); }

/* ── Cross-Chain ── */
.xchain-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem; max-width: 560px; margin: 2.5rem auto 0;
}
.xchain-item {
  text-align: center;
  padding: 1.8rem 1.2rem;
  border: 1px solid var(--border);
  background: var(--bg-card);
  transition: border-color 0.25s, background 0.35s;
}
.xchain-active { border-color: var(--gold); }
.xchain-planned { opacity: 0.6; }
.xchain-name {
  display: block;
  font-family: 'Cinzel', serif;
  font-size: 0.92rem; font-weight: 500;
  letter-spacing: 0.1em; color: var(--text);
  margin-bottom: 0.6rem;
}
.xchain-status {
  display: block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.6rem; letter-spacing: 0.08em;
  color: var(--gold); margin-bottom: 0.5rem;
}
.xchain-planned .xchain-status { color: var(--text-faint); }
.xchain-detail {
  font-size: 0.66rem; color: var(--text-muted); line-height: 1.7;
}

/* ── Why This Matters ── */
.why-list {
  max-width: 560px; margin: 2.5rem auto 0;
  text-align: left;
}
.why-item {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border-light);
}
.why-item:last-child { border-bottom: none; }
.why-item h4 {
  font-family: 'Cinzel', serif;
  font-size: 0.88rem; font-weight: 500;
  letter-spacing: 0.08em; color: var(--text);
  margin-bottom: 0.6rem;
}
.why-item p {
  font-size: 0.85rem; color: var(--text-tertiary); line-height: 1.8;
}

/* ── Live Chain Status (Observability Panel) ── */
.chain-panel {
  max-width: 680px; margin: 2.5rem auto 0;
  border: 1px solid var(--border);
  background: var(--bg-card);
  transition: background 0.35s;
}
.chain-header {
  display: flex; align-items: center; gap: 0.8rem;
  padding: 1.2rem 1.8rem;
  border-bottom: 1px solid var(--border);
}
.chain-net-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--text-faint);
  flex-shrink: 0;
  transition: background 0.3s;
}
.chain-net-dot.live { background: var(--pass); box-shadow: 0 0 6px var(--pass); }
.chain-net-dot.loading { background: var(--gold); animation: chain-pulse 1s ease-in-out infinite; }
.chain-net-dot.error { background: var(--fail, #c55050); }
@keyframes chain-pulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}
.chain-net-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.68rem; font-weight: 500;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--text);
}
.chain-block {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.62rem; color: var(--text-muted);
  letter-spacing: 0.06em;
  margin-left: auto;
}

/* Chain data grid */
.chain-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 0;
}
.chain-card {
  padding: 1.4rem 1.8rem;
  border-bottom: 1px solid var(--border);
  border-right: 1px solid var(--border);
}
.chain-card:nth-child(2n) { border-right: none; }
.chain-card:nth-last-child(-n+2) { border-bottom: none; }
.chain-card-label {
  display: block;
  font-family: 'Cinzel', serif;
  font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.1em; color: var(--gold);
  margin-bottom: 1rem;
}
.chain-row {
  display: flex; justify-content: space-between;
  align-items: baseline;
  padding: 0.35rem 0;
}
.chain-row span {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.6rem; color: var(--text-muted);
  letter-spacing: 0.04em;
}
.chain-row code {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.6rem; color: var(--text);
  letter-spacing: 0.03em;
  text-align: right;
  max-width: 55%;
  word-break: break-all;
}
.chain-hash { color: var(--code); }
.chain-frozen { color: var(--pass); font-weight: 500; }

/* Event history */
.chain-events {
  padding: 1.4rem 1.8rem;
  border-top: 1px solid var(--border);
}
.chain-events-title {
  font-family: 'Cinzel', serif;
  font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.1em; color: var(--gold);
  margin-bottom: 1rem;
}
.chain-event-list { }
.chain-event-placeholder {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.6rem; color: var(--text-faint);
  letter-spacing: 0.06em;
  padding: 0.5rem 0;
}
.chain-event {
  display: flex; align-items: baseline; gap: 0.6rem;
  flex-wrap: wrap;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border-light);
}
.chain-event:last-child { border-bottom: none; }
.ce-type {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.52rem; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase;
  padding: 0.15rem 0.5rem;
  border: 1px solid var(--border);
  color: var(--text-muted);
  flex-shrink: 0;
}
.ce-anchor { color: var(--gold); border-color: var(--gold); }
.ce-freeze { color: var(--pass); border-color: var(--pass); }
.ce-detail {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.58rem; color: var(--text);
  letter-spacing: 0.03em;
  flex: 1;
}
.ce-contract {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.5rem; color: var(--text-faint);
  letter-spacing: 0.06em;
}
.ce-tx {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.5rem; color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
.ce-tx:hover { border-bottom-color: var(--gold); }
.ce-block {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.48rem; color: var(--text-faint);
  letter-spacing: 0.06em;
}

/* Panel footer */
.chain-footer {
  display: flex; justify-content: space-between; align-items: center;
  padding: 0.9rem 1.8rem;
  border-top: 1px solid var(--border);
}
.chain-refresh {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.6rem; color: var(--gold);
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: color 0.2s;
}
.chain-refresh:hover { color: var(--text); }
.chain-updated {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.55rem; color: var(--text-faint);
  letter-spacing: 0.04em;
}

/* ═══════════════════════════
   Academic Standard Layer
   ═══════════════════════════ */

/* ── Hero Role Badges ── */
.hero-role-badges {
  display: flex; gap: 0.8rem; justify-content: center;
  flex-wrap: wrap; margin-top: 1.5rem; margin-bottom: 0.5rem;
}
.hero-role-badge {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.62rem; letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.35rem 1.2rem;
  border-radius: 2px;
  font-weight: 500;
}
.role-spec {
  background: var(--gold); color: var(--bg);
  border: 1px solid var(--gold);
}
.role-impl {
  background: transparent; color: var(--gold);
  border: 1px solid var(--gold);
}

/* ── Abstract ── */
.abstract-text {
  max-width: 620px; margin: 0 auto;
  text-align: left;
}
.abstract-text p {
  font-family: 'Inter', sans-serif;
  font-size: 0.92rem; line-height: 1.85;
  color: var(--text-secondary);
  margin-bottom: 1.2rem;
}
.abstract-impl {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.78rem;
  color: var(--text-muted);
  font-style: italic;
  margin-top: 1.5rem;
}

/* ── Definitions ── */
.def-grid {
  display: grid; gap: 0;
  max-width: 640px; margin: 2rem auto 0;
  text-align: left;
  border-top: 1px solid var(--border);
}
.def-item {
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--border);
}
.def-term {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.78rem; font-weight: 500;
  color: var(--gold);
  letter-spacing: 0.04em;
  margin-bottom: 0.4rem;
}
.def-desc {
  font-size: 0.82rem; line-height: 1.7;
  color: var(--text-secondary);
}

/* ── Protocol Stewardship ── */
.steward-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  max-width: 560px; margin: 2.5rem auto 0;
}
.steward-role {
  display: flex; flex-direction: column;
  align-items: center; gap: 0.4rem;
  padding: 1.5rem 1rem;
  border: 1px solid var(--border);
  background: var(--bg-card);
  transition: border-color 0.25s;
}
.steward-role:hover { border-color: var(--gold); }
.steward-title {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.6rem; letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-faint);
}
.steward-name {
  font-family: 'Cinzel', serif;
  font-size: 0.88rem; font-weight: 500;
  color: var(--text);
  letter-spacing: 0.03em;
}

/* ── Compliance Levels ── */
.compliance-grid {
  display: flex; flex-direction: column;
  gap: 0; max-width: 580px; margin: 2.5rem auto 0;
  border-top: 1px solid var(--border);
}
.compliance-level {
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  grid-template-rows: auto auto;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
  gap: 0 1rem;
  text-align: left;
}
.cl-num {
  grid-row: 1 / 3;
  font-family: 'Cinzel', serif;
  font-size: 1.1rem; font-weight: 600;
  color: var(--gold);
  display: flex; align-items: center; justify-content: center;
}
.cl-name {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem; font-weight: 500;
  color: var(--text);
  letter-spacing: 0.04em;
}
.cl-req {
  font-size: 0.72rem; line-height: 1.6;
  color: var(--text-tertiary);
  margin-top: 0.15rem;
}
.compliance-level.cl-active {
  background: linear-gradient(135deg, rgba(212,175,55,0.06), rgba(212,175,55,0.02));
  border-left: 2px solid var(--gold);
  padding-left: calc(1rem - 2px);
  margin-left: -1px;
}
.compliance-level.cl-active .cl-name {
  color: var(--gold);
}
.compliance-cert {
  max-width: 580px; margin: 2rem auto 0;
  padding: 1.5rem;
  border: 1px solid var(--gold);
  text-align: center;
}
.cert-badge {
  display: inline-block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.85rem; font-weight: 500;
  color: var(--gold);
  letter-spacing: 0.06em;
  border: 1px solid var(--gold);
  padding: 0.4rem 1.2rem;
}
.cert-detail {
  font-size: 0.72rem; line-height: 1.7;
  color: var(--text-tertiary);
  margin-top: 1rem;
}

/* ── Related Work ── */
.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  max-width: 680px; margin: 2.5rem auto 0;
  text-align: left;
}
.related-item {
  padding: 1.5rem;
  border: 1px solid var(--border);
  background: var(--bg-card);
  transition: border-color 0.25s;
}
.related-item:hover { border-color: var(--gold); }
.related-item h4 {
  font-family: 'Cinzel', serif;
  font-size: 0.82rem; font-weight: 600;
  color: var(--text);
  margin-bottom: 0.6rem;
  letter-spacing: 0.02em;
}
.related-item p {
  font-size: 0.75rem; line-height: 1.7;
  color: var(--text-secondary);
}

/* ── Security Considerations ── */
.sec-grid {
  display: grid; gap: 1.5rem;
  max-width: 640px; margin: 2.5rem auto 0;
  text-align: left;
}
.sec-item {
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-left: 3px solid var(--gold);
  background: var(--bg-card);
}
.sec-item h4 {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.72rem; font-weight: 500;
  color: var(--text);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.6rem;
}
.sec-item p {
  font-size: 0.78rem; line-height: 1.8;
  color: var(--text-secondary);
}

/* ── Limitations ── */
.limit-grid {
  display: grid; gap: 0;
  max-width: 600px; margin: 2rem auto 0;
  text-align: left;
  border-top: 1px solid var(--border);
}
.limit-item {
  display: flex; gap: 0.8rem; align-items: baseline;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}
.limit-marker {
  color: var(--gold);
  font-size: 0.9rem;
  flex-shrink: 0;
}
.limit-item p {
  font-size: 0.78rem; line-height: 1.7;
  color: var(--text-secondary);
}

/* ── Implementation Status ── */
.impl-table {
  max-width: 500px; margin: 2.5rem auto 0;
  border: 1px solid var(--border);
  background: var(--bg-card);
}
.impl-row {
  display: flex; justify-content: space-between;
  align-items: baseline;
  padding: 0.8rem 1.4rem;
  border-bottom: 1px solid var(--border);
}
.impl-row:last-child { border-bottom: none; }
.impl-key {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.65rem; letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.impl-val {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.72rem; font-weight: 500;
  color: var(--text);
  text-align: right;
}

/* ── Responsive: new sections ── */

/* ── Metrics Bar ── */
.metrics-bar {
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  padding: 1.1rem 0;
  overflow-x: auto;
}
.metrics-inner {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1.8rem;
  padding: 0 1.5rem;
}
.metric {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  min-width: 0;
  flex-shrink: 0;
}
.metric-value {
  font-family: 'Cinzel', serif;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--gold);
  letter-spacing: 0.04em;
}
.metric-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.52rem;
  color: var(--text-faint);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
}
.metric-sep {
  width: 1px;
  height: 2rem;
  background: var(--border);
  flex-shrink: 0;
}
.metric-compliance {
  color: #00c853 !important;
  font-weight: 700;
}

/* ── Protocol Resources Bar ── */
.resources-bar {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 0;
}
.resources-inner {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.4rem;
  padding: 0 1.5rem;
  flex-wrap: wrap;
}
.resource-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.7rem;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: 4px;
  text-decoration: none;
  transition: border-color 0.2s, color 0.2s;
  white-space: nowrap;
}
.resource-link:hover {
  border-color: var(--gold);
  color: var(--gold);
}
.resource-icon {
  font-size: 0.75rem;
  line-height: 1;
}

/* ── Hero Read Links ── */
.hero-read-links {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 0.75rem;
}
.hero-read-link {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}
.hero-read-link:hover {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

/* ── Hero Subline ── */
.hero-subline {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--pass);
  margin-bottom: 2.5rem;
  font-weight: 400;
}

/* ── Metric Source Labels ── */
.metric-source {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.42rem;
  color: var(--pass);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.8;
}
.metric-live {
  position: relative;
}
.metric-live::before {
  content: '';
  position: absolute;
  top: -2px;
  right: -8px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--pass);
  animation: metric-pulse 2s ease-in-out infinite;
}
@keyframes metric-pulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

/* ── Why This Is a Standard Block ── */
.standard-block {
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
  padding: 3rem 1.5rem;
}
.standard-inner {
  max-width: 680px;
  margin: 0 auto;
}
.standard-heading {
  font-family: 'Cinzel', serif;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: 1.8rem;
  text-align: center;
}
.standard-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.standard-list li {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.72rem;
  color: var(--text-secondary);
  line-height: 1.9;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border-light);
  padding-left: 1.2rem;
  position: relative;
}
.standard-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--gold);
}
.standard-list li:last-child {
  border-bottom: none;
}

/* ── Funding Alignment Strip ── */
.funding-strip {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 2.5rem 1.5rem;
  text-align: center;
}
.funding-inner {
  max-width: 680px;
  margin: 0 auto;
}
.funding-heading {
  font-family: 'Cinzel', serif;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}
.funding-criteria {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}
.funding-criterion {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  color: var(--text-tertiary);
  padding: 0.4rem 1rem;
  border: 1px solid var(--border);
  white-space: nowrap;
}
.funding-footnote {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.58rem;
  color: var(--text-dim);
  margin-top: 1.5rem;
  letter-spacing: 0.03em;
  font-style: italic;
}

/* ── Become an Implementor ── */
.impl-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin: 2.5rem 0;
}
.impl-step {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  padding: 1.8rem 1.5rem;
  position: relative;
}
.impl-step-num {
  display: inline-block;
  font-family: 'Cinzel', serif;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--gold);
  margin-bottom: 0.8rem;
  line-height: 1;
}
.impl-step-title {
  display: block;
  font-family: 'Cinzel', serif;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--text);
  margin-bottom: 0.6rem;
}
.impl-step-desc {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.58rem;
  line-height: 1.7;
  color: var(--text-muted);
  margin: 0;
}
.impl-step-link {
  display: inline-block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.55rem;
  color: var(--gold);
  text-decoration: none;
  margin-top: 0.8rem;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
.impl-step-link:hover {
  border-bottom-color: var(--gold);
}
.impl-step-code {
  display: block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.52rem;
  color: var(--accent);
  background: rgba(0,0,0,0.2);
  padding: 0.5rem 0.8rem;
  margin-top: 0.8rem;
  border: 1px solid var(--border);
  white-space: nowrap;
  overflow-x: auto;
}
.impl-registry {
  margin-top: 3rem;
  text-align: center;
}
.impl-registry-title {
  font-family: 'Cinzel', serif;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}
.impl-registry-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  max-width: 600px;
  margin: 0 auto;
}
.impl-registry-entry {
  border: 1px solid var(--border);
  padding: 1.5rem;
  text-align: left;
}
.impl-registry-entry.impl-active {
  border-color: var(--gold);
  background: rgba(212, 175, 55, 0.03);
}
.impl-registry-entry.impl-open {
  border-style: dashed;
  border-color: var(--text-faint);
  background: transparent;
}
.impl-registry-name {
  display: block;
  font-family: 'Cinzel', serif;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.4rem;
}
.impl-registry-level {
  display: block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.52rem;
  color: var(--gold);
  margin-bottom: 0.2rem;
}
.impl-registry-chain {
  display: block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.5rem;
  color: var(--text-dim);
  margin-bottom: 0.2rem;
}
.impl-registry-status {
  display: block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.5rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.impl-active .impl-registry-status {
  color: var(--accent);
}
.impl-open .impl-registry-status {
  color: var(--text-faint);
  font-style: italic;
}

/* ── Deep Protocol Divider ── */
.deep-protocol-divider {
  text-align: center;
  padding: 4rem 1.5rem 3rem;
  border-top: 2px solid var(--border);
  margin-top: 2rem;
}
.deep-protocol-inner {
  max-width: 600px;
  margin: 0 auto;
}
.deep-protocol-label {
  font-family: 'Cinzel', serif;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
  display: block;
  margin-bottom: 0.6rem;
}
.deep-protocol-desc {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.6rem;
  color: var(--text-dim);
  letter-spacing: 0.04em;
}

/* ── Reference Implementation Label ── */
.impl-label {
  display: inline-block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.52rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
  background: rgba(212, 175, 55, 0.08);
  border: 1px solid rgba(212, 175, 55, 0.25);
  padding: 0.25rem 0.8rem;
  margin-bottom: 0.6rem;
}

/* ── Chain RPC Source ── */
.chain-id-badge {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.52rem;
  letter-spacing: 0.06em;
  color: var(--gold);
  background: rgba(212, 175, 55, 0.08);
  border: 1px solid rgba(212, 175, 55, 0.2);
  padding: 0.15rem 0.5rem;
  white-space: nowrap;
}
.chain-latency {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.5rem;
  color: var(--text-dim);
  letter-spacing: 0.04em;
}
.chain-anchor-tx {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.52rem;
  color: var(--text-dim);
  letter-spacing: 0.03em;
}
.chain-anchor-tx a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
.chain-anchor-tx a:hover {
  border-bottom-color: var(--gold);
}
.chain-protocol-meta {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.52rem;
  color: var(--accent);
  letter-spacing: 0.04em;
}
.chain-rpc {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.52rem;
  color: var(--text-faint);
  letter-spacing: 0.06em;
}

/* ── Chain Contract Badges ── */
.chain-contracts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 1rem 1.8rem;
  border-bottom: 1px solid var(--border);
}
.chain-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.52rem;
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--border);
  transition: border-color 0.2s, color 0.2s;
  letter-spacing: 0.04em;
}
.chain-badge:hover {
  border-color: var(--gold);
  color: var(--gold);
}
.chain-badge code {
  font-size: 0.48rem;
  color: var(--text-faint);
}

@media (max-width: 900px) {
  .metrics-inner { gap: 1rem; }
  .metric-value { font-size: 0.95rem; }
  .resources-inner { gap: 0.3rem; }
  .resource-link { font-size: 0.58rem; padding: 0.28rem 0.5rem; }
  .merkle-leaves { grid-template-columns: repeat(2, 1fr); }
  .xchain-grid { grid-template-columns: 1fr; max-width: 280px; }
  .inv-grid { grid-template-columns: 1fr; }
  .chain-grid { grid-template-columns: 1fr; }
  .chain-card { border-right: none; }
  .chain-card:nth-last-child(-n+2) { border-bottom: 1px solid var(--border); }
  .chain-card:last-child { border-bottom: none; }
  .steward-grid { grid-template-columns: 1fr; max-width: 300px; margin-left: auto; margin-right: auto; }
  .related-grid { grid-template-columns: 1fr; max-width: 400px; margin-left: auto; margin-right: auto; }
  .chain-contracts { gap: 0.4rem; padding: 0.8rem 1.2rem; }
  .funding-criteria { gap: 1.2rem; }
  .impl-steps { grid-template-columns: 1fr 1fr; gap: 1rem; }
  .impl-registry-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 700px) {
  .metrics-inner { gap: 0.7rem; flex-wrap: wrap; justify-content: center; }
  .metric-sep:nth-child(8), .metric-sep:nth-child(12) { display: none; }
  .metric-value { font-size: 0.85rem; }
  .resources-inner { gap: 0.25rem; }
  .resource-link { font-size: 0.55rem; padding: 0.25rem 0.45rem; }
  .sm-flow { flex-direction: column; align-items: center; }
  .sm-arrow { transform: rotate(90deg); padding: 0.1rem 0; }
  .sm-terminals { flex-direction: column; gap: 1.5rem; }
  .cm-row { flex-direction: column; gap: 0.3rem; }
  .cm-sep { transform: rotate(90deg); font-size: 0.7rem; }
  .prov-layer { flex-wrap: wrap; padding: 0.9rem 1rem; gap: 0.5rem; }
  .prov-desc { width: 100%; }
  .merkle-leaves { grid-template-columns: 1fr 1fr; }
  .merkle-lines-svg { display: none; }
  .chain-header { flex-wrap: wrap; }
  .chain-block { width: 100%; margin-left: 0; margin-top: 0.4rem; }
  .chain-event { font-size: 0.52rem; gap: 0.3rem; }
  .chain-footer { flex-direction: column; gap: 0.5rem; align-items: flex-start; }
  .impl-row { flex-direction: column; gap: 0.2rem; }
  .impl-val { text-align: left; }
  .hero-role-badges { flex-direction: column; align-items: center; }
  .chain-contracts { gap: 0.3rem; padding: 0.6rem 1rem; }
  .chain-badge { font-size: 0.48rem; padding: 0.25rem 0.5rem; }
  .chain-rpc { width: 100%; margin-top: 0.3rem; }
  .funding-criteria { flex-direction: column; align-items: center; gap: 0.8rem; }
  .standard-list li { font-size: 0.65rem; }
  .hero-subline { font-size: 0.62rem; }
  .impl-steps { grid-template-columns: 1fr; }
  .impl-registry-grid { grid-template-columns: 1fr; max-width: 300px; margin: 0 auto; }
  .impl-step-code { font-size: 0.48rem; }
  .chain-id-badge { font-size: 0.48rem; }
}