:root{
  --bg:#0b0e14;--panel:#121722;--panel2:#171d2a;--text:#eef2f8;--muted:#9ba6b7;
  --line:#2a3344;--accent:#e8c16f;--accent2:#7bb6ff;--good:#7bd89b;--warn:#f3b77c;
  --danger:#ef8d8d;--radius:22px;--shadow:0 18px 50px rgba(0,0,0,.28)
}
*{box-sizing:border-box}
html{background:var(--bg);color-scheme:dark}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:
radial-gradient(circle at 15% 0%,rgba(232,193,111,.12),transparent 24rem),
radial-gradient(circle at 90% 10%,rgba(123,182,255,.09),transparent 30rem),var(--bg);color:var(--text)}
button,select,input,textarea{font:inherit}
button,select,textarea{background:#0f141e;color:var(--text);border:1px solid var(--line);border-radius:12px}
button{cursor:pointer;padding:.72rem 1rem}
button:hover{border-color:#4b5870}
.app-shell{width:min(1180px,calc(100% - 28px));margin:auto;min-height:100vh}
.topbar{display:flex;justify-content:space-between;gap:24px;align-items:flex-start;padding:34px 0 20px}
.eyebrow,.kicker{font-size:.72rem;letter-spacing:.18em;color:var(--accent);font-weight:800;margin:0 0 8px}
h1{font-size:clamp(2.2rem,6vw,5.2rem);line-height:.92;margin:0;letter-spacing:-.05em}
.subtitle{color:var(--muted);margin:12px 0 0}
.ghost{background:transparent}
.tabs{display:flex;gap:10px;position:sticky;top:0;z-index:20;padding:10px 0;background:linear-gradient(var(--bg) 70%,transparent)}
.tab{background:rgba(18,23,34,.82);backdrop-filter:blur(16px);color:var(--muted)}
.tab.active{color:var(--bg);background:var(--accent);border-color:var(--accent)}
.panel{display:none;padding:18px 0 40px}.panel.active{display:block}
.card{background:linear-gradient(180deg,rgba(23,29,42,.95),rgba(16,21,31,.96));border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}
.hero-grid,.prompt-grid,.sim-grid{display:grid;grid-template-columns:1.4fr .6fr;gap:18px;margin-bottom:18px}
.manifesto h2{font-size:clamp(1.5rem,3.5vw,3rem);margin:.3rem 0 1rem;line-height:1.08;letter-spacing:-.03em}
.manifesto p:last-child,.prose p{color:#c3cbd8;line-height:1.85}
.metric{display:flex;flex-direction:column;justify-content:center}.metric-label{color:var(--muted)}
.metric strong{font-size:2rem;margin:10px 0}.metric small{color:var(--muted)}
.timeline-wrap{margin-bottom:18px}
.timeline{display:grid;grid-template-columns:repeat(7,1fr);gap:10px}
.timeline button{min-height:92px;padding:12px;text-align:left;background:#0e131c}
.timeline button.active{border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent)}
.timeline .num{display:block;color:var(--accent);font-size:.76rem;margin-bottom:10px}
.timeline .name{font-weight:800}
.detail{margin-top:18px;padding-top:18px;border-top:1px solid var(--line);display:grid;grid-template-columns:.7fr 1.3fr;gap:28px}
.detail h3{font-size:2rem;margin:.2rem 0}.detail p{color:#c3cbd8;line-height:1.75}.detail .quote{font-size:1.2rem;color:var(--text)}
.section-head{display:flex;justify-content:space-between;gap:16px;align-items:center;margin-bottom:16px}
.section-head h2,.section-head h3{margin:0}
select,textarea{width:100%;padding:12px}
.structure-graph{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;gap:12px;align-items:center;min-height:210px}
.node{padding:20px;border:1px solid var(--line);border-radius:18px;background:#0f141e;text-align:center}
.node strong{display:block;font-size:1.2rem}.node small{color:var(--muted)}
.arrow{font-size:1.8rem;color:var(--accent)}
.controls{display:flex;flex-direction:column;gap:18px}
.controls label{display:flex;flex-direction:column;gap:8px;color:#d5dbe6;font-weight:650}
input[type=range]{width:100%;accent-color:var(--accent)}
.prompt-output{min-height:440px}.output-title{color:var(--muted);margin-bottom:10px}
pre{white-space:pre-wrap;word-break:break-word;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;line-height:1.7;color:#dfe7f3;margin:0}
.prompt-presets{margin-top:18px}.preset-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.preset{background:#0f141e;text-align:left}.preset strong{display:block;margin-bottom:6px}.preset span{color:var(--muted);font-size:.9rem}
.sim-grid{grid-template-columns:.7fr 1.3fr}
.event-box{padding-top:10px;border-top:1px solid var(--line)}.event-buttons{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:10px}
.sim-output{display:grid;grid-template-columns:210px 1fr;gap:24px;align-items:start}
.score-ring{width:190px;height:190px;border-radius:50%;display:grid;place-items:center;background:conic-gradient(var(--accent) 0deg,#232b3a 0deg);position:relative}
.score-ring:after{content:"";position:absolute;inset:16px;border-radius:50%;background:var(--panel)}
.score-ring div{position:relative;z-index:1;text-align:center}.score-ring span{display:block;font-size:3.6rem;font-weight:900;line-height:1}.score-ring small{color:var(--muted)}
.bar-row{display:grid;grid-template-columns:110px 1fr 44px;gap:10px;align-items:center;margin:13px 0}
.bar-track{height:10px;background:#232b3a;border-radius:999px;overflow:hidden}.bar-fill{height:100%;background:linear-gradient(90deg,var(--accent2),var(--accent));border-radius:inherit}
.narrative{grid-column:1/-1;border-top:1px solid var(--line);padding-top:18px;color:#c5cedc;line-height:1.7}
.tension-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.tension{background:#0f141e;border:1px solid var(--line);padding:18px;border-radius:16px}
.tension strong{display:block;margin-bottom:8px}.tension p{margin:0;color:var(--muted);line-height:1.55}
.prose{max-width:900px;margin:auto}.prose h2{font-size:2.4rem}.prose blockquote{margin:28px 0 0;padding:20px 24px;border-left:3px solid var(--accent);background:#0f141e;font-size:1.35rem}
footer{display:flex;justify-content:space-between;color:var(--muted);font-size:.85rem;padding:24px 0 40px}
@media(max-width:820px){
  .hero-grid,.prompt-grid,.sim-grid{grid-template-columns:1fr}
  .timeline{grid-template-columns:repeat(2,1fr)}
  .detail{grid-template-columns:1fr}
  .structure-graph{grid-template-columns:1fr}.arrow{transform:rotate(90deg);text-align:center}
  .preset-grid,.tension-grid{grid-template-columns:1fr}
  .sim-output{grid-template-columns:1fr}.score-ring{margin:auto}
}

.agent-layout,.ai-grid{display:grid;grid-template-columns:.55fr 1.45fr;gap:18px;margin-bottom:18px}
.agent-board{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.agent-card{background:#0f141e;border:1px solid var(--line);border-radius:16px;padding:18px}
.agent-card strong{display:block;font-size:1.05rem;margin-bottom:6px}
.agent-card small{color:var(--muted)}
.agent-card p{color:#c6cfdd;line-height:1.55;margin:.7rem 0 0}
.agent-meter{height:7px;background:#252d3b;border-radius:999px;overflow:hidden;margin-top:12px}
.agent-meter>span{display:block;height:100%;background:linear-gradient(90deg,var(--accent2),var(--accent))}
.event-timeline{display:flex;gap:12px;overflow:auto;padding-bottom:6px}
.event-item{min-width:250px;background:#0f141e;border:1px solid var(--line);border-radius:15px;padding:16px}
.event-item b{display:block;margin-bottom:6px}.event-item small{color:var(--muted)}
.status-pill{border:1px solid var(--line);border-radius:999px;padding:7px 10px;color:var(--muted);font-size:.85rem}
.arbiter-output{line-height:1.75;color:#c8d0dc}
.arbiter-output h3{color:var(--text)}
.api-note{color:#c6cfdd;line-height:1.7}
.mini-code{background:#0b1018;border:1px solid var(--line);padding:16px;border-radius:14px}
@media(max-width:820px){
  .agent-layout,.ai-grid{grid-template-columns:1fr}
  .agent-board{grid-template-columns:1fr}
}

.mode-switch{display:flex;gap:8px}.mode-switch button.active{background:var(--accent);color:var(--bg);border-color:var(--accent)}
.civ-grid{display:grid;grid-template-columns:.58fr 1.42fr;gap:18px;margin-bottom:18px}
.civ-state-card{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}
.constitution-box{background:#0f141e;border:1px solid var(--line);border-radius:16px;padding:18px}
.constitution-box ol{padding-left:1.25rem;color:#c8d0dc;line-height:1.65}
.civ-metrics{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.civ-metric{background:#0f141e;border:1px solid var(--line);border-radius:14px;padding:14px}
.civ-metric b{display:block;font-size:1.6rem;margin-top:4px}
.institution-arena{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.actor{background:#0f141e;border:1px solid var(--line);border-radius:16px;padding:16px}
.actor-head{display:flex;justify-content:space-between;gap:10px;align-items:start}
.actor h4{margin:0}.actor p{color:var(--muted);line-height:1.5}
.actor .action{border-top:1px solid var(--line);padding-top:10px;color:#d6deea}
.civ-bottom{display:grid;grid-template-columns:1.25fr .75fr;gap:18px;margin-top:18px}
.law-log{max-height:420px;overflow:auto}.law-entry{border-left:2px solid var(--accent);padding:4px 0 14px 14px;margin-bottom:14px}
.law-entry small{color:var(--muted)}
.path-graph{display:flex;flex-direction:column;gap:10px}
.path-step{background:#0f141e;border:1px solid var(--line);border-radius:14px;padding:14px}
.path-step strong{display:block}.path-step small{color:var(--muted)}
@media(max-width:820px){
 .civ-grid,.civ-bottom,.civ-state-card{grid-template-columns:1fr}
 .institution-arena{grid-template-columns:1fr}
}

.site-stats{margin:8px 0 18px}
.stats-head{display:flex;justify-content:space-between;gap:16px;align-items:center;margin-bottom:16px}
.stats-head h2{margin:0;font-size:1.8rem}
.stats-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}
.stat-box{background:#0f141e;border:1px solid var(--line);border-radius:16px;padding:16px}
.stat-box span{display:block;color:var(--muted);font-size:.85rem;margin-bottom:7px}
.stat-box b{font-size:clamp(1.6rem,3vw,2.5rem);letter-spacing:-.04em}
.stats-note{color:var(--muted);font-size:.82rem;margin:12px 0 0}
.brand-mark{font-weight:800;color:var(--accent)}
@media(max-width:820px){
 .stats-grid{grid-template-columns:repeat(2,1fr)}
 .stat-box:last-child{grid-column:1/-1}
}

.parl-grid{display:grid;grid-template-columns:.52fr 1.48fr;gap:18px;margin-bottom:18px}
.parl-bottom{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.bill-desk{background:#0f141e;border:1px solid var(--line);border-radius:16px;padding:18px;min-height:220px}
.bill-desk h4{font-size:1.35rem;margin:.2rem 0 .6rem}
.bill-desk p{color:#c6cfdd;line-height:1.65}
.bill-meta{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:10px}
.bill-meta span{border:1px solid var(--line);border-radius:999px;padding:5px 8px;color:var(--muted);font-size:.78rem}
.vote-board{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:14px}
.vote-card{background:#0f141e;border:1px solid var(--line);border-radius:14px;padding:14px}
.vote-card b{display:block;font-size:1.5rem;margin-top:4px}
.world-tree{display:flex;flex-direction:column;gap:10px;max-height:520px;overflow:auto}
.world-node{background:#0f141e;border:1px solid var(--line);border-radius:14px;padding:14px;cursor:pointer}
.world-node.active{border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent)}
.world-node .indent{display:inline-block}
.world-node small{color:var(--muted)}
.parl-log{max-height:520px;overflow:auto}
.parl-entry{padding:12px 0;border-bottom:1px solid var(--line)}
.parl-entry:last-child{border-bottom:0}
.parl-entry strong{display:block}
@media(max-width:820px){
 .parl-grid,.parl-bottom{grid-template-columns:1fr}
 .vote-board{grid-template-columns:1fr}
}

.lab-grid{display:grid;grid-template-columns:.55fr 1.45fr;gap:18px;margin-bottom:18px}
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:18px}
#experimentChart{width:100%;height:auto;background:#0f141e;border:1px solid var(--line);border-radius:16px;margin-top:16px}
.compare-card{margin-top:14px}
.compare-card table{width:100%;border-collapse:collapse}
.compare-card th,.compare-card td{padding:9px;border-bottom:1px solid var(--line);text-align:left}
.experiment-archive{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.archive-card{background:#0f141e;border:1px solid var(--line);border-radius:16px;padding:16px;cursor:pointer}
.archive-card strong{display:block}.archive-card small{color:var(--muted)}
.archive-card p{color:#c5ceda}
@media(max-width:820px){
 .lab-grid,.compare-grid{grid-template-columns:1fr}
 .experiment-archive{grid-template-columns:1fr}
}

.platform-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px;margin-bottom:18px}
.case-library{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.case-card{background:#0f141e;border:1px solid var(--line);border-radius:16px;padding:16px;cursor:pointer}
.case-card:hover{border-color:var(--accent)}
.case-card strong{display:block;margin-bottom:6px}
.case-card p{color:var(--muted);line-height:1.5}
.counterfactual-result{margin-top:14px}
.counter-card{background:#0f141e;border:1px solid var(--line);border-radius:16px;padding:16px}
.leaderboard{display:flex;flex-direction:column;gap:10px}
.rank-row{display:grid;grid-template-columns:42px 1fr auto;gap:10px;align-items:center;background:#0f141e;border:1px solid var(--line);border-radius:14px;padding:12px}
.rank-row b{font-size:1.2rem}
@media(max-width:820px){
 .platform-grid{grid-template-columns:1fr}
 .case-library{grid-template-columns:1fr}
}