/* ===== Cryptocivilization — phosphor-green lab notebook ===== */
:root{
  --bg: #0a0a0c;
  --bg-2: #16161a;
  --bg-3: #26262a;
  --line: rgba(250,250,250,0.10);
  --line-2: rgba(250,250,250,0.22);
  --ink: #fafafa;
  --ink-soft: #a3a3ab;
  /* Canonical Psy mint accent — names retained */
  --phosphor: #61f5b3;
  --phosphor-dim: #61f5b3;
  --amber: #a3a3ab;
  --rose: #a3a3ab;
  --violet: #a3a3ab;
  --primary: #61f5b3;
  --primary-glow: rgba(97,245,179,0.28);
}
[data-theme="light"]{
  --bg: #ffffff;
  --bg-2: #ffffff;
  --bg-3: #f8f8f8;
  --line: rgba(10,10,12,0.13);
  --line-2: rgba(10,10,12,0.30);
  --ink: #0a0a0c;
  --ink-soft: #4f5260;
  --phosphor: #00b87b;
  --phosphor-dim: #00b87b;
  --amber: #4f5260;
  --rose: #4f5260;
  --violet: #4f5260;
  --primary: #00b87b;
  --primary-glow: rgba(0,184,123,0.20);
}

*{box-sizing: border-box}
html, body{margin:0; padding:0}
html{scroll-behavior: smooth; scroll-padding-top: 72px}
body{
  font-family: "Inter", "Noto Sans SC", system-ui, sans-serif;
  font-size: 17px; line-height: 1.65;
  color: var(--ink); background: var(--bg);
  background-image:
    radial-gradient(900px 600px at 12% -8%, rgba(97,245,179,0.10), transparent 60%),
    radial-gradient(700px 500px at 105% 30%, rgba(97,245,179,0.05), transparent 60%),
    radial-gradient(700px 500px at 50% 120%, rgba(97,245,179,0.04), transparent 60%);
}
[data-theme="light"] body{
  background-image:
    radial-gradient(900px 600px at 12% -8%, rgba(0,184,123,0.08), transparent 60%),
    radial-gradient(700px 500px at 105% 30%, rgba(0,184,123,0.05), transparent 60%),
    radial-gradient(700px 500px at 50% 120%, rgba(0,184,123,0.04), transparent 60%);
}

a{color: var(--ink); text-decoration: underline; text-decoration-color: var(--line-2); text-underline-offset: 3px}
a:hover{text-decoration-color: var(--phosphor)}
em{font-style: italic; color: var(--phosphor)}
code, .mono{font-family: "JetBrains Mono", ui-monospace, monospace}

/* Bilingual */
[lang="zh"]{display:none}
html[data-lang="zh"] [lang="en"]{display:none}
html[data-lang="zh"] [lang="zh"]{display:initial}
html svg [lang="zh"]{display:none}
html[data-lang="zh"] svg [lang="zh"]{display:inline}
html[data-lang="zh"] svg [lang="en"]{display:none}
html[data-lang="zh"]{font-family: "Noto Serif SC", "Source Han Serif SC", "Inter", "Noto Sans SC", system-ui, sans-serif;}

/* Topbar */
.topbar{
  position:sticky; top:0; z-index:50;
  background: color-mix(in oklab, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.topbar-inner{
  max-width: 1320px; margin: 0 auto; padding: 12px 24px;
  display: flex; align-items: center; gap: 18px;
}
.brand{
  display: flex; align-items: center; gap: 10px;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 15px; font-weight: 500; letter-spacing: -.005em;
  text-decoration: none; color: var(--ink);
}
.brand .seal{
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 8px;
  background: var(--primary); color: var(--bg);
  box-shadow: 0 0 14px var(--primary-glow);
}
.brand .seal svg{ width: 64%; height: 64%; display: block; fill: currentColor; }
[data-theme="light"] .brand .seal{
  box-shadow: 0 0 0 1px var(--phosphor) inset, 0 1px 0 rgba(0,0,0,0.05);
}
.brand em{color: var(--phosphor); font-style: normal; font-weight: 500}
.brand-mark{
  font-family: "JetBrains Mono", monospace;
  font-size: 11px; color: var(--ink-soft); margin-left: 4px;
}
.nav{display: flex; gap: 14px; flex-wrap: wrap; margin-left: 8px}
.nav a{
  font-family: "JetBrains Mono", monospace;
  font-size: 11px; letter-spacing: .06em;
  text-transform: uppercase; text-decoration: none;
  color: var(--ink-soft);
  padding: 6px 0; border-bottom: 1px solid transparent;
}
.nav a:hover{color: var(--phosphor); border-bottom-color: var(--phosphor)}
.toolbar{margin-left: auto; display: flex; gap: 10px}
.lang-toggle, .theme-toggle{
  display:inline-flex; gap:0;
  border:1px solid var(--line); border-radius: 4px; overflow: hidden;
}
.lang-toggle button, .theme-toggle button{
  font-family: "JetBrains Mono", monospace; font-size: 11px;
  background: transparent; color: var(--ink-soft);
  border: none; border-right: 1px solid var(--line);
  padding: 5px 10px; cursor: pointer; letter-spacing: .04em;
}
.lang-toggle button:last-child, .theme-toggle button:last-child{border-right: none}
.lang-toggle button.active, .theme-toggle button.active{background: var(--phosphor); color: var(--bg)}

/* Hero */
.hero{ max-width: 1320px; margin: 0 auto; padding: 88px 24px 56px; }
.hero-ascii{
  font-family: "JetBrains Mono", monospace;
  font-size: 11px; color: var(--phosphor-dim);
  margin-bottom: 20px; white-space: pre; line-height: 1.4;
  opacity: .8;
}
.hero-eyebrow{
  font-family: "JetBrains Mono", monospace;
  font-size: 12px; letter-spacing: .18em;
  color: var(--phosphor); text-transform: uppercase;
  margin-bottom: 24px;
}
.hero-eyebrow::before{content: "▸ "; color: var(--phosphor-dim)}
.hero h1{
  font-family: "Space Grotesk", system-ui, sans-serif;
  font-weight: 600;
  font-size: clamp(40px, 6vw, 76px);
  line-height: 1.05; letter-spacing: -.025em;
  margin: 0 0 20px; max-width: 19ch;
}
.hero h1 em{
  color: var(--phosphor);
  font-style: italic;
  text-shadow: 0 0 20px rgba(122,240,168,0.35);
}
[data-theme="light"] .hero h1 em{text-shadow: none}
.hero-sub{
  font-family: "Space Grotesk", system-ui, sans-serif;
  font-size: 22px; line-height: 1.35;
  color: var(--ink-soft);
  font-weight: 400; max-width: 60ch;
  margin: 0 0 24px;
}
.hero-lede{
  font-size: 19px; line-height: 1.55;
  max-width: 64ch; color: var(--ink-soft);
  margin: 0 0 28px;
}
.hero-thesis{
  display:grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px; margin-top: 40px;
}
.hero-thesis div{
  border: 1px solid var(--line);
  background: var(--bg-2);
  padding: 18px; border-radius: 4px;
  position: relative;
}
.hero-thesis strong{
  font-family: "JetBrains Mono", monospace; font-weight: 500;
  font-size: 11px; letter-spacing: .12em;
  color: var(--phosphor); text-transform: uppercase;
  display: block; margin-bottom: 8px;
}

/* Sections */
section{ max-width: 1320px; margin: 0 auto; padding: 72px 24px; border-top: 1px solid var(--line); }
section.no-rule{border-top: none}
.section-eyebrow{
  font-family: "JetBrains Mono", monospace;
  font-size: 11px; letter-spacing: .18em;
  color: var(--phosphor); text-transform: uppercase;
  margin: 0 0 14px;
}
.section-eyebrow::before{content: "// "; color: var(--ink-soft)}
.section-title{
  font-family: "Space Grotesk", system-ui, sans-serif;
  font-weight: 600;
  font-size: clamp(30px, 3.6vw, 46px);
  line-height: 1.1; margin: 0 0 16px;
  letter-spacing: -.018em;
}
.section-lede{
  font-size: 18px; line-height: 1.6; color: var(--ink-soft);
  max-width: 72ch; margin: 0 0 32px;
}

/* ZK canvas */
.zk-canvas{
  border: 1px solid var(--line);
  background: var(--bg-2);
  border-radius: 6px;
  background-image:
    repeating-linear-gradient(0deg, rgba(122,240,168,0.04) 0 1px, transparent 1px 32px),
    repeating-linear-gradient(90deg, rgba(122,240,168,0.04) 0 1px, transparent 1px 32px);
  overflow: hidden;
}
.zk-canvas svg{display: block; width: 100%; height: auto}

/* Cards */
.grid{ display:grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid.two{grid-template-columns: repeat(auto-fit, minmax(380px, 1fr))}
.grid.three{grid-template-columns: repeat(auto-fit, minmax(320px, 1fr))}

.card{
  border: 1px solid var(--line);
  background: var(--bg-2);
  border-radius: 4px; padding: 22px;
  position: relative;
}
.card::before{
  content:"┌"; font-family: "JetBrains Mono", monospace;
  position: absolute; top: 0; left: 0;
  color: var(--phosphor); font-size: 14px; line-height: 1;
  padding: 4px 6px; opacity: .6;
}
.card.amber::before{color: var(--amber)}
.card.rose::before{color: var(--rose)}
.card.violet::before{color: var(--violet)}
.card h3{
  font-family: "Space Grotesk", system-ui, sans-serif; font-weight: 600;
  font-size: 22px; margin: 0 0 8px; line-height: 1.2;
  letter-spacing: -.005em;
}
.card .meta{
  font-family: "JetBrains Mono", monospace;
  font-size: 11px; letter-spacing: .08em;
  color: var(--phosphor); text-transform: uppercase;
  margin-bottom: 10px;
}
.card.amber .meta{color: var(--amber)}
.card.rose .meta{color: var(--rose)}
.card.violet .meta{color: var(--violet)}
.card p{margin: 0 0 10px; line-height: 1.6}
.card .small{
  font-size: 13px; color: var(--ink-soft);
  font-family: "JetBrains Mono", monospace;
  margin-top: 8px; padding-top: 10px;
  border-top: 1px dashed var(--line);
}

/* Trust ladder */
.trust-ladder{
  border: 1px solid var(--line); border-radius: 6px;
  background: var(--bg-2); overflow: hidden;
}
.trust-rung{
  display: grid;
  grid-template-columns: 80px 240px 1fr;
  border-bottom: 1px solid var(--line);
}
.trust-rung:last-child{border-bottom: none}
.trust-rung.peak{background: linear-gradient(90deg, color-mix(in oklab, var(--phosphor) 12%, var(--bg-2)), var(--bg-2))}
.trust-rung > div{padding: 22px 22px}
.trust-rung .rung-num{
  font-family: "JetBrains Mono", monospace;
  color: var(--phosphor-dim); font-size: 13px;
  border-right: 1px dashed var(--line);
  text-align: center; padding-top: 24px;
}
.trust-rung .rung-meta{
  border-right: 1px dashed var(--line);
}
.trust-rung .rung-meta .name{
  font-family: "Space Grotesk", system-ui, sans-serif;
  font-weight: 600; font-size: 22px;
  margin-bottom: 4px;
}
.trust-rung.peak .rung-meta .name{color: var(--phosphor); text-shadow: 0 0 12px rgba(122,240,168,0.3)}
[data-theme="light"] .trust-rung.peak .rung-meta .name{text-shadow: none}
.trust-rung .rung-meta .scale{
  font-family: "JetBrains Mono", monospace;
  font-size: 12px; color: var(--amber);
}
.trust-rung .rung-body{padding-top: 22px}

/* Math lab */
.lab{ display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(360px, 1fr)); }
.lab-card{
  border: 1px solid var(--line);
  background: var(--bg-2);
  border-radius: 6px; padding: 22px;
  position: relative;
}
.lab-card .glyph{
  position: absolute; top: 18px; right: 22px;
  font-family: "JetBrains Mono", monospace;
  font-size: 14px; color: var(--amber);
  background: var(--bg);
  padding: 4px 10px; border: 1px solid var(--line);
  border-radius: 3px;
}
.lab-card h3{
  font-family: "Space Grotesk", system-ui, sans-serif;
  font-size: 22px; font-weight: 600; line-height: 1.2;
  margin: 0 0 8px; padding-right: 110px;
}
.lab-card p{margin: 0 0 12px; line-height: 1.6; font-size: 15px}
.lab-card .intuition{
  font-family: "JetBrains Mono", monospace;
  font-size: 12px; color: var(--phosphor-dim);
  border-left: 2px solid var(--phosphor);
  padding-left: 12px; line-height: 1.6;
  margin-top: 8px;
}

/* Narratives */
.narratives{ display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.narrative{
  border: 1px solid var(--line);
  background: var(--bg-2);
  border-radius: 4px; padding: 22px;
  position: relative; overflow: hidden;
}
.narrative .glyph{
  position: absolute; top: -8px; right: -10px;
  font-family: "Space Grotesk", monospace;
  font-size: 90px; font-weight: 700;
  color: color-mix(in oklab, var(--phosphor) 15%, transparent);
  letter-spacing: -.04em; line-height: 1;
}
.narrative h3{
  font-family: "Space Grotesk", system-ui, sans-serif;
  font-size: 21px; font-weight: 600; line-height: 1.2;
  margin: 0 0 10px; position: relative;
}
.narrative p{margin: 0 0 12px; line-height: 1.55; font-size: 15px}
.narrative .pioneer{
  font-family: "JetBrains Mono", monospace;
  font-size: 12px; color: var(--ink-soft);
  border-top: 1px dashed var(--line); padding-top: 10px;
}

/* Consensus table */
.cons-table{
  width: 100%; border-collapse: collapse;
  border: 1px solid var(--line); border-radius: 6px; overflow: hidden;
  font-size: 14px;
}
.cons-table th, .cons-table td{
  text-align: left; vertical-align: top;
  padding: 14px 16px; border-bottom: 1px solid var(--line);
}
.cons-table th{
  background: var(--bg-3);
  font-family: "JetBrains Mono", monospace; font-weight: 500;
  font-size: 10px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--phosphor);
}
.cons-table td:first-child{
  font-family: "Space Grotesk", system-ui, sans-serif;
  font-size: 16px; font-weight: 600;
  color: var(--ink);
}
.cons-table tr.proof td:first-child{color: var(--phosphor)}

/* Simulator */
.sim{
  display:grid; grid-template-columns: 320px 1fr; gap: 24px;
  border: 1px solid var(--line); border-radius: 6px;
  background: var(--bg-2); padding: 24px;
}
.sim-controls .ctrl{margin-bottom: 18px}
.sim-controls label{
  font-family: "JetBrains Mono", monospace;
  font-size: 11px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--ink-soft); display: block; margin-bottom: 6px;
}
.sim-controls input[type="range"]{ width: 100%; accent-color: var(--phosphor); }
.sim-controls .val{
  font-family: "JetBrains Mono", monospace; font-size: 12px;
  color: var(--phosphor); float: right;
}
.sim-output{display: flex; flex-direction: column; gap: 16px;}
.sim-meter{
  display: grid; grid-template-columns: 200px 1fr 60px;
  gap: 12px; align-items: center;
  font-family: "JetBrains Mono", monospace; font-size: 12px;
}
.sim-meter .bar{ height: 8px; background: var(--bg-3); border-radius: 4px; overflow: hidden; }
.sim-meter .bar-fill{
  height: 100%;
  background: linear-gradient(90deg, var(--violet), var(--phosphor), var(--amber));
  transition: width .25s ease;
}
.sim-meter .num{text-align: right; color: var(--phosphor)}
.sim-summary{
  margin-top: 8px; padding: 16px;
  background: var(--bg); border: 1px dashed var(--line); border-radius: 4px;
  font-style: italic; color: var(--ink-soft); font-size: 15px; line-height: 1.55;
}

/* Footer */
footer{
  max-width: 1320px; margin: 0 auto; padding: 48px 24px 64px;
  border-top: 1px solid var(--line);
  font-size: 14px; color: var(--ink-soft);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px;
}
footer a{color: var(--ink-soft)}

/* Responsive */
@media (max-width: 900px){
  .nav{display: none}
  .sim{grid-template-columns: 1fr}
  .trust-rung{grid-template-columns: 60px 1fr; }
  .trust-rung .rung-meta{grid-column: 2 / 3}
  .trust-rung .rung-body{grid-column: 1 / 3; padding-top: 0; border-top: 1px dashed var(--line)}
}
@media (max-width: 600px){
  .topbar-inner{padding: 10px 16px; gap: 10px}
  .hero{padding: 56px 16px 36px}
  section{padding: 56px 16px}
}