:root{
  --sidebar:#0f172a;
  --teal:#0f766e; --must:#b42318; --should:#b54708; --plus:#087443;
  --shadow:0 10px 40px rgba(15,23,42,.08); --sidebar-w:280px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:var(--soft);
  font:15.5px/1.7 "Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
.layout{display:flex;min-height:100vh}
.sidebar{position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-w);
  background:linear-gradient(180deg,var(--sidebar),#111827);color:#e2e8f0;overflow-y:auto;z-index:40;
  border-right:1px solid rgba(255,255,255,.06)}
.sidebar::-webkit-scrollbar{width:6px}
.sidebar::-webkit-scrollbar-thumb{background:rgba(255,255,255,.15);border-radius:99px}
.brand{padding:22px 20px 16px;border-bottom:1px solid rgba(255,255,255,.08);position:sticky;top:0;
  background:rgba(15,23,42,.96);backdrop-filter:blur(8px);z-index:2}
.brand .mark{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:8px;margin-right:8px;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#0f172a;font-weight:800;font-size:13px}
.brand h1{display:flex;align-items:center;margin:0;font-size:16px;font-weight:750;color:var(--sidebar-text)}
.brand p{margin:8px 0 0;font-size:12px;color:#94a3b8;line-height:1.5}
.hub{padding:10px 12px 6px;border-bottom:1px solid rgba(255,255,255,.06)}
.toc-label{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:#64748b;padding:6px 10px 8px;font-weight:700}
.hub a,.toc a{display:block;color:#cbd5e1;text-decoration:none;padding:7px 12px;border-radius:10px;font-size:13px;margin:2px 0;border:1px solid transparent}
.hub a small,.toc a small{display:block;color:#64748b;font-size:11px;margin-top:2px}
.hub a:hover,.toc a:hover{background:rgba(255,255,255,.05);color:#fff;text-decoration:none}
.hub a.here,.toc a.active{background:linear-gradient(90deg,rgba(56,189,248,.18),rgba(129,140,248,.12));color:#fff;border-color:rgba(56,189,248,.25)}
.toc{padding:10px 12px 28px}
.toc a .d{font-size:11px;color:#64748b;margin-right:6px;font-weight:700}
.sidebar-foot{padding:12px 18px 20px;font-size:11.5px;color:#64748b;border-top:1px solid rgba(255,255,255,.06)}
.main{margin-left:var(--sidebar-w);flex:1;min-width:0}
.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 28px;background:rgba(241,245,249,.88);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.crumb{font-size:13px;color:var(--muted)}.crumb b{color:var(--ink);font-weight:650}
.menu-btn{display:none;border:1px solid var(--line);background:var(--paper);border-radius:10px;padding:8px 12px;font-size:13px;cursor:pointer}
.content{width:100%;padding:24px 28px 96px}
body.mode-timeline .content{padding:0;min-height:calc(100vh - var(--wa-app-nav-h, 0px))}
/* 知识面：对齐学习路线正文区（软底 + 章节卡片），不影响时间线总览 */
body.mode-article .content{padding:24px 28px 96px}
body.mode-article .crumb,
body.mode-article #gotoToday{display:none !important}
body.mode-article .topbar{justify-content:flex-end}
/* .overview-screen { display:flex } 会压过原生 [hidden]，必须强制隐藏 */
#view-timeline[hidden],
#view-article[hidden]{display:none !important}
body.mode-article #view-timeline{display:none !important}
body.mode-timeline #view-article{display:none !important}
body.mode-article #view-article{display:block !important}
body.mode-timeline #view-timeline{display:flex !important}

/* Full-screen timeline overview */
.overview-screen{min-height:calc(100vh - var(--wa-app-nav-h, 0px));display:flex}
.overview-stage{
  flex:1;width:100%;min-height:inherit;display:flex;flex-direction:column;justify-content:center;gap:28px;
  padding:36px 40px 48px;
  background:
    radial-gradient(1200px 420px at 8% -10%,rgba(56,189,248,.2),transparent 55%),
    radial-gradient(900px 380px at 92% 0%,rgba(129,140,248,.16),transparent 50%),
    linear-gradient(180deg,var(--wa-bg-elevated) 0%,var(--soft) 100%);
  border:0;border-radius:0;box-shadow:none
}
.overview-hero{max-width:920px}
.eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--teal);font-weight:700;margin-bottom:10px}
.overview-stage h2{margin:0 0 10px;font-size:clamp(28px,4vw,40px);line-height:1.2;border:0;padding:0;color:var(--ink);font-weight:800}
.lead{color:var(--muted);margin:0 0 14px;max-width:56ch;font-size:16px;line-height:1.65}
.overview-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px 18px;font-size:13px;color:var(--muted)}
.overview-meta b{color:var(--ink);font-weight:700}
.overview-meta .legend{display:inline-flex;flex-wrap:wrap;gap:6px}
.overview-hint{margin:0;font-size:12.5px;color:var(--muted)}
.tag-filter{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:16px;max-width:960px}
.tag-filter-label{font-size:12px;font-weight:800;color:var(--muted);letter-spacing:.04em;margin-right:2px}
.tag-filter-btn{
  border:1px solid var(--line);background:var(--paper);color:var(--ink);border-radius:999px;padding:5px 11px;
  font-size:12.5px;font-weight:650;cursor:pointer;line-height:1.2}
.tag-filter-btn:hover{border-color:#93c5fd;color:#1d4ed8}
.tag-filter-btn.is-active{background:#eff6ff;border-color:#60a5fa;color:#1d4ed8;font-weight:750}
.tag-filter-meta{font-size:12px;color:var(--muted);margin-left:4px}
.chain-tag{font-size:10px;font-weight:700;color:#475569;background:#f1f5f9;border:1px solid #e2e8f0;
  border-radius:6px;padding:2px 6px;max-width:120px;line-height:1.2}
.tag{font-size:11px;font-weight:700;padding:4px 9px;border-radius:999px;border:1px solid var(--line);background:var(--paper)}
.tag.low{background:#ecfdf5;color:#047857;border-color:#a7f3d0}
.tag.medium{background:var(--wa-warn-bg);color:var(--wa-warn-ink);border-color:var(--wa-warn-border)}
.tag.high{background:#fef2f2;color:#b91c1c;border-color:#fecaca}

/* Horizontal tech chain — overview stage */
.chain-stage{position:relative;margin:8px -8px 0;padding:28px 0 8px}
.chain-axis{position:absolute;left:40px;right:40px;top:54px;height:3px;border-radius:99px;
  background:linear-gradient(90deg,#93c5fd 0%,#a5b4fc 70%,#fb923c 100%);opacity:.9;pointer-events:none}
.chain{position:relative;z-index:1;display:flex;align-items:flex-start;gap:0;overflow-x:auto;padding:0 40px 12px;scroll-snap-type:x proximity;
  scrollbar-width:thin}
.chain::-webkit-scrollbar{height:6px}
.chain::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:99px}
.chain-seg{flex:0 0 36px;height:3px;margin-top:24px;background:transparent}
.chain-seg-now{background:transparent}
.chain-node{flex:0 0 auto;width:128px;display:flex;flex-direction:column;align-items:center;gap:8px;padding:0 4px 8px;
  border:0;background:transparent;cursor:pointer;scroll-snap-align:center;color:var(--ink);font:inherit;text-align:center}
.chain-node:hover .chain-dot{transform:scale(1.18);box-shadow:0 0 0 6px rgba(37,99,235,.16)}
.chain-node:hover .chain-title{color:var(--blue)}
.chain-node.active .chain-dot{background:#1d4ed8;box-shadow:0 0 0 6px rgba(37,99,235,.22)}
.chain-node.active .chain-title{color:#1d4ed8;font-weight:800}
.chain-date{font-size:11px;font-weight:800;color:var(--muted);letter-spacing:.02em;white-space:nowrap;order:-1}
.chain-dot{width:16px;height:16px;border-radius:50%;background:#2563eb;border:3px solid #fff;
  box-shadow:0 0 0 2px #93c5fd;transition:transform .15s ease,box-shadow .15s ease;margin-top:2px}
.chain-node.risk-medium .chain-dot{background:#d97706;box-shadow:0 0 0 2px #fcd34d}
.chain-node.risk-high .chain-dot{background:#dc2626;box-shadow:0 0 0 2px #fecaca}
.chain-title{font-size:13.5px;font-weight:750;line-height:1.3;max-width:120px}
.chain-job{font-size:10.5px;font-weight:650;line-height:1.25;color:#1d4ed8;background:rgba(239,246,255,.92);border:1px dashed #93c5fd;
  border-radius:8px;padding:3px 6px;max-width:120px}
.chain-today .chain-dot{background:#ef4444;box-shadow:0 0 0 4px rgba(239,68,68,.28);width:18px;height:18px}
.chain-today .chain-title{color:#c2410c}
.chain-today .chain-job{color:var(--wa-warn-ink);background:var(--wa-warn-bg);border-color:var(--wa-warn-border)}
.chain-today.active .chain-title{color:#9a3412}
.chain-node.is-draft{opacity:.55}
.chain-skeleton{display:flex;align-items:flex-start;gap:0;padding:0 4px 8px;pointer-events:none}
.sk-node{flex:0 0 128px;display:flex;flex-direction:column;align-items:center;gap:8px;padding:0 4px}
.sk-node::before{content:"";display:block;width:48px;height:11px;border-radius:6px;background:linear-gradient(90deg,#e2e8f0 25%,#f1f5f9 50%,#e2e8f0 75%);background-size:200% 100%;animation:sk-shimmer 1.2s ease-in-out infinite}
.sk-node::after{content:"";display:block;width:16px;height:16px;border-radius:50%;background:#cbd5e1;box-shadow:0 0 0 2px #e2e8f0;margin-top:2px}
@keyframes sk-shimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}
html[data-theme="dark"] .sk-node::before{background:linear-gradient(90deg,#1e293b 25%,#334155 50%,#1e293b 75%);background-size:200% 100%}
html[data-theme="dark"] .sk-node::after{background:#475569;box-shadow:0 0 0 2px #334155}
.today-btn{border:1px solid #93c5fd;background:#eff6ff;color:#1d4ed8;border-radius:999px;padding:7px 12px;font-size:12.5px;font-weight:700;cursor:pointer}
@media(max-width:960px){
  .overview-stage{padding:20px 16px 32px}
  .chain{padding:0 16px 12px}
  .chain-axis{left:16px;right:16px}
  .chain-node{width:108px}
}

/* Left nav: node + facets */
.toc .toc-head{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:#64748b;padding:6px 10px 8px;font-weight:700}
.toc .toc-home{display:block;margin:4px 0 10px;padding:10px 12px;border-radius:12px;border:1px solid rgba(56,189,248,.28);
  background:linear-gradient(90deg,rgba(56,189,248,.16),rgba(129,140,248,.1));color:var(--sidebar-text);text-decoration:none}
.toc .toc-home small{display:block;color:#94a3b8;font-size:11px;margin-top:3px}
.toc .toc-home:hover,.toc .toc-home.active{text-decoration:none;border-color:rgba(56,189,248,.5)}
.toc .toc-year{font-size:11px;font-weight:800;letter-spacing:.08em;color:#64748b;padding:12px 12px 4px}
.side-links{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.side-links a{font-size:11.5px;color:#94a3b8;text-decoration:none}
.side-links a:hover{color:#e2e8f0}
.reader-toolbar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;margin-bottom:8px}
.back-timeline{border:1px solid var(--line);background:var(--soft);color:var(--ink);border-radius:999px;padding:6px 12px;font-size:12.5px;font-weight:650;cursor:pointer}
.back-timeline:hover{border-color:#93c5fd;color:#1d4ed8}
.crumb a{color:var(--blue);text-decoration:none}
.crumb a:hover{text-decoration:underline}
.toc .toc-node{margin:2px 0}
.toc .toc-node .toc-main{display:block}
.toc .toc-facets{display:none;padding:2px 0 6px 12px}
.toc .toc-node.open .toc-facets,
.toc .toc-node.current .toc-facets{display:block}
.toc .toc-facets a{display:block;font-size:12.5px;padding:5px 10px;margin:1px 0;border-radius:8px;color:#94a3b8}
.toc .toc-facets a:hover{color:#fff;background:rgba(255,255,255,.05);text-decoration:none}
.toc .toc-facets a.active{color:#fff;background:rgba(56,189,248,.16);border:1px solid rgba(56,189,248,.25)}
.toc .toc-node.is-draft .toc-main small{color:#78869a}

/* Reader = 学习路线 .chapter 卡片风格（仅知识面） */
#view-article .reader{
  width:100%;max-width:none;min-height:0;margin:0 0 18px;
  padding:26px 32px 28px;
  background:var(--paper);border:1px solid var(--line);border-radius:18px;
  box-shadow:var(--shadow);
  scroll-margin-top:calc(var(--wa-app-nav-h, 0px) + 72px)
}
#view-article .reader-head .node-date-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:8px
}
#view-article .reader-head .node-date{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:64px;height:28px;padding:0 10px;border-radius:999px;
  background:#0f172a;color:#fff;font-size:12px;font-weight:750;letter-spacing:.02em
}
#view-article .reader-head h2{
  margin:0 0 8px;font-size:24px;line-height:1.3;font-weight:750;letter-spacing:.01em;
  padding-bottom:12px;border-bottom:1px solid var(--line);color:var(--ink)
}
#view-article .facet-current{
  display:inline-block;margin-left:8px;font-size:14px;font-weight:650;color:var(--muted);vertical-align:baseline
}
#view-article .reader-body{margin-top:4px}
#view-article .reader-body > .muted{color:var(--muted);font-size:14.5px}
#view-article .md-body{font-size:15px;line-height:1.8;color:var(--ink)}
#view-article .md-lead{
  margin:4px 0 22px;padding:20px 22px 18px;border-radius:16px;
  background:
    radial-gradient(600px 180px at 0% 0%,rgba(56,189,248,.14),transparent 55%),
    linear-gradient(180deg,var(--soft),var(--paper));
  border:1px solid var(--line)
}
#view-article .md-lead h2{margin:0 0 10px;font-size:18px;font-weight:800;color:var(--ink)}
#view-article .md-lead p{margin:0 0 8px;font-size:15px;line-height:1.75;color:#334155}
#view-article .md-lead p:last-child{margin-bottom:0}
#view-article .md-hr{border:0;border-top:1px solid var(--line);margin:22px 0}
#view-article .md-body > h2{
  margin:28px 0 12px;padding:0 0 0 12px;font-size:18px;font-weight:800;line-height:1.35;
  border:0;border-left:3px solid #2563eb;letter-spacing:0;color:var(--ink)
}
#view-article .md-body > h3{margin:20px 0 10px;font-size:15.5px;font-weight:750;color:var(--ink)}
#view-article .md-body > h4{
  margin:16px 0 8px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;
  color:var(--teal);font-weight:800
}
#view-article .md-body p,
#view-article .md-body li{font-size:15px;line-height:1.8;color:var(--ink)}
#view-article .md-body p{margin:0 0 0.7em;text-indent:2em}
#view-article .md-body li p,
#view-article .md-body blockquote p{text-indent:0}
#view-article .md-body a.md-link,
#view-article .md-body a{
  color:#2563eb;text-decoration:underline;text-underline-offset:2px;word-break:break-all
}
#view-article .md-body a.md-link:hover,
#view-article .md-body a:hover{color:#1d4ed8}
#view-article .md-figure{
  margin:18px 0 20px;padding:0;border:1px solid var(--line);border-radius:16px;
  background:var(--soft);overflow:hidden;box-shadow:0 8px 24px rgba(15,23,42,.05)
}
#view-article .md-figure img{display:block;width:100%;height:auto;background:var(--soft)}
#view-article .md-figure figcaption{
  margin:0;padding:10px 14px 12px;font-size:12.5px;color:var(--muted);border-top:1px solid var(--line);
  background:rgba(255,255,255,.92);line-height:1.5
}
#view-article .md-body .refs{margin-top:8px}
#view-article .md-body .refs li{font-size:13.5px;line-height:1.65}
#view-article .md-body ul,
#view-article .md-body ol{padding-left:2em;margin:0 0 14px}
#view-article .md-body li{margin:6px 0}
#view-article .md-body blockquote,
#view-article .md-body blockquote.md-key{
  margin:14px 0 18px;padding:14px 16px;border-left:3px solid #2563eb;
  background:linear-gradient(90deg,var(--wa-prose-quote-bg),var(--soft));color:var(--wa-prose-quote-ink);border-radius:0 14px 14px 0;
  font-size:14.5px;font-weight:650
}
#view-article .md-table{
  overflow:auto;margin:14px 0 18px;border:1px solid var(--line);border-radius:14px;background:var(--paper)
}
#view-article .md-table table{width:100%;border-collapse:collapse;font-size:13.5px;margin:0}
#view-article .md-table th,
#view-article .md-table td{border-bottom:1px solid var(--line);border-right:1px solid var(--line);padding:11px 12px;text-align:left;vertical-align:top}
#view-article .md-table th:last-child,
#view-article .md-table td:last-child{border-right:0}
#view-article .md-table tr:last-child td{border-bottom:0}
#view-article .md-table th{background:var(--soft);color:var(--ink);font-weight:750;font-size:12.5px}

/* Dynamic flow diagrams */
.flow-diagram{
  margin:16px 0 22px;padding:16px 16px 14px;border:1px solid #bfdbfe;border-radius:16px;
  background:
    radial-gradient(500px 160px at 100% 0%,rgba(129,140,248,.12),transparent 50%),
    linear-gradient(180deg,#eff6ff,var(--soft));
  box-shadow:0 10px 28px rgba(37,99,235,.08)
}
.flow-caption{
  display:flex;align-items:center;gap:8px;margin:0 0 14px;
  font-size:12.5px;font-weight:750;color:#1d4ed8;letter-spacing:.02em
}
.flow-live{
  width:8px;height:8px;border-radius:50%;background:#22c55e;
  box-shadow:0 0 0 0 rgba(34,197,94,.55);
  animation:flow-ping 1.6s ease-out infinite
}
@keyframes flow-ping{
  0%{box-shadow:0 0 0 0 rgba(34,197,94,.5)}
  70%{box-shadow:0 0 0 8px rgba(34,197,94,0)}
  100%{box-shadow:0 0 0 0 rgba(34,197,94,0)}
}
.flow-note{margin:12px 0 0;font-size:12.5px;color:#64748b;line-height:1.5}
.flow-split{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:720px){.flow-split{grid-template-columns:1fr}}
.flow-pane{
  background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:12px 12px 10px;min-height:140px
}
.flow-pane-title{font-size:12.5px;font-weight:800;margin-bottom:10px}
.flow-pane-title.bad{color:#b91c1c}
.flow-pane-title.good{color:#1d4ed8}
.flow-tokens{display:flex;gap:8px;align-items:center;min-height:36px}
.flow-tokens .ft{
  display:inline-flex;align-items:center;justify-content:center;min-width:40px;height:32px;
  border-radius:10px;font:700 12px/1 ui-monospace,Menlo,monospace;border:1px solid transparent
}
.flow-tokens.rnn .ft{background:#fee2e2;border-color:#fecaca;color:#991b1b;opacity:.35}
.flow-tokens.rnn .ft:nth-child(1){animation:rnn-run 2.4s linear infinite}
.flow-tokens.rnn .ft:nth-child(2){animation:rnn-run 2.4s linear infinite .6s}
.flow-tokens.rnn .ft:nth-child(3){animation:rnn-run 2.4s linear infinite 1.2s}
.flow-tokens.rnn .ft:nth-child(4){animation:rnn-run 2.4s linear infinite 1.8s}
@keyframes rnn-run{
  0%,15%{opacity:.3;transform:scale(.96)}
  25%,40%{opacity:1;transform:scale(1.06);box-shadow:0 0 0 3px rgba(248,113,113,.25)}
  55%,100%{opacity:.35;transform:scale(1)}
}
.flow-attn-wrap{margin-top:2px}
.flow-attn-svg{display:block;width:100%;height:auto;max-height:140px}
.flow-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
@media(max-width:720px){.flow-steps{grid-template-columns:1fr 1fr}}
.flow-step{
  background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:12px 10px;
  display:flex;flex-direction:column;gap:6px;opacity:.45;transform:scale(.98);
  animation:step-glow 4.8s ease-in-out infinite
}
.flow-step b{
  width:22px;height:22px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;
  background:#eff6ff;color:#1d4ed8;font-size:11px
}
.flow-step span{font-size:12.5px;font-weight:650;color:#334155;line-height:1.35}
.flow-step[data-step="1"]{animation-delay:0s}
.flow-step[data-step="2"]{animation-delay:1.2s}
.flow-step[data-step="3"]{animation-delay:2.4s}
.flow-step[data-step="4"]{animation-delay:3.6s}
@keyframes step-glow{
  0%,18%{opacity:.4;transform:scale(.98);border-color:var(--line);box-shadow:none}
  8%,14%{opacity:1;transform:scale(1.02);border-color:#60a5fa;box-shadow:0 0 0 3px rgba(37,99,235,.12)}
  30%,100%{opacity:.4;transform:scale(.98)}
}
.flow-formula{
  margin-top:12px;padding:10px 12px;border-radius:10px;background:#0f172a;color:#e2e8f0;
  font:12.5px/1.5 ui-monospace,Menlo,Consolas,monospace;overflow:auto
}
.flow-rail{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.flow-chip{
  position:relative;padding:10px 12px;border-radius:999px;background:var(--paper);border:1px solid var(--line);
  font-size:12.5px;font-weight:750;color:#334155;opacity:.45;
  animation:chip-run 7s ease-in-out infinite
}
.flow-chip::after{content:"→";position:absolute;right:-12px;color:#94a3b8;font-weight:400}
.flow-chip:last-child::after{content:""}
.flow-chip[data-step="1"]{animation-delay:0s}
.flow-chip[data-step="2"]{animation-delay:1s}
.flow-chip[data-step="3"]{animation-delay:2s}
.flow-chip[data-step="4"]{animation-delay:3s}
.flow-chip[data-step="5"]{animation-delay:4s}
.flow-chip[data-step="6"]{animation-delay:5s}
.flow-chip[data-step="7"]{animation-delay:6s}
@keyframes chip-run{
  0%,10%{opacity:.4;transform:translateY(0);border-color:var(--line)}
  4%,8%{opacity:1;transform:translateY(-2px);border-color:#60a5fa;background:#eff6ff;color:#1d4ed8}
  18%,100%{opacity:.4}
}
#view-article .md-body pre{
  background:#0f172a;color:#e2e8f0;padding:12px 14px;border-radius:12px;
  overflow:auto;font-size:12.5px;line-height:1.55
}
#view-article .md-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12px}
#view-article .md-body p code{background:#eef2ff;color:#312e81;padding:1px 5px;border-radius:4px}
#view-article .paper-list{display:flex;flex-direction:column;gap:12px;margin-top:10px}
#view-article .paper-card{
  border:1px solid var(--line);border-radius:14px;padding:14px 16px;background:var(--soft)
}
#view-article .paper-card.role-primary{border-color:#93c5fd;background:#eff6ff}
#view-article .paper-card.role-precursor{opacity:.95}
#view-article .paper-meta{font-size:11.5px;font-weight:700;color:var(--muted);margin-bottom:4px}
#view-article .paper-card h4{margin:0 0 6px;font-size:15px}
#view-article .paper-card p{margin:0;font-size:13.5px;line-height:1.55}
#view-article .paper-read{margin-top:8px !important;color:var(--muted)}
#view-article .stance-box{
  margin-top:16px;padding:12px 14px;border-radius:12px;
  background:var(--wa-warn-bg);border:1px solid var(--wa-warn-border);color:var(--wa-warn-ink);font-size:13px
}
#view-article .stance-box b{display:block;margin-bottom:6px;color:#92400e;font-size:13px}
#view-article .stance-box p{margin:0;font-size:13px;line-height:1.6;color:#92400e}
#view-article .learn-links{margin-top:12px}
#view-article .learn-links a{display:inline-block;margin:2px 10px 2px 0;font-size:13.5px}
@media(max-width:960px){
  body.mode-article .content{padding:16px 12px 80px}
  #view-article .reader{padding:18px 16px}
}

/* Peek cards on rail */
.node-peek{position:relative;margin:0 0 14px;scroll-margin-top:calc(var(--wa-app-nav-h, 0px) + 72px)}
.node-peek::before{content:"";position:absolute;left:-23px;top:22px;width:12px;height:12px;border-radius:50%;background:#2563eb;border:2px solid #fff;box-shadow:0 0 0 2px #93c5fd}
.node-peek.risk-high::before{background:#dc2626;box-shadow:0 0 0 2px #fecaca}
.node-peek.risk-medium::before{background:#d97706;box-shadow:0 0 0 2px #fcd34d}
.node-peek.is-draft::before{background:#94a3b8;box-shadow:0 0 0 2px #cbd5e1}
.peek-card{width:100%;text-align:left;border:1px solid var(--line);border-radius:16px;padding:16px 18px;background:var(--paper);box-shadow:var(--shadow);cursor:pointer;color:inherit;font:inherit}
.peek-card:hover{border-color:#93c5fd}
.node-peek.is-draft .peek-card{opacity:.85}
.today-btn:hover{background:#dbeafe}
.rail{position:relative;padding-left:28px;padding-bottom:120px}
.rail::before{content:"";position:absolute;left:9px;top:8px;bottom:8px;width:2px;background:linear-gradient(180deg,#93c5fd,#c4b5fd,#f59e0b 85%,#ef4444)}
.year-mark{position:relative;margin:18px 0 10px;scroll-margin-top:calc(var(--wa-app-nav-h, 0px) + 72px)}
.year-mark span{display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;background:#0f172a;color:var(--wa-on-primary);font-size:12px;font-weight:800;letter-spacing:.06em}
.year-mark::before{content:"";position:absolute;left:-23px;top:8px;width:12px;height:12px;border-radius:50%;background:#0f172a;border:2px solid #fff;box-shadow:0 0 0 2px #64748b}
.now-mark{position:relative;margin:22px 0 14px;scroll-margin-top:calc(var(--wa-app-nav-h, 0px) + 72px)}
.now-mark::before{content:"";position:absolute;left:-25px;top:28px;width:16px;height:16px;border-radius:50%;background:#ef4444;border:3px solid #fff;box-shadow:0 0 0 3px rgba(239,68,68,.35);z-index:2}
.now-card{background:linear-gradient(135deg,#fff7ed,#fee2e2);border:1px solid #fdba74;border-radius:16px;padding:16px 18px;box-shadow:var(--shadow)}
.now-kicker{font-size:11px;font-weight:800;letter-spacing:.14em;color:#c2410c;margin-bottom:4px}
.now-card h3{margin:0 0 6px;font-size:18px}
.now-card p{margin:0 0 12px;font-size:13px;color:var(--muted)}
.now-btn{border:1px solid #fdba74;background:var(--paper);color:#9a3412;border-radius:999px;padding:6px 12px;font-size:12.5px;font-weight:700;cursor:pointer}
.now-btn:hover{background:#ffedd5}
.node{position:relative;margin:0 0 14px;scroll-margin-top:calc(var(--wa-app-nav-h, 0px) + 72px)}
.node::before{content:"";position:absolute;left:-23px;top:22px;width:12px;height:12px;border-radius:50%;background:#2563eb;border:2px solid #fff;box-shadow:0 0 0 2px #93c5fd}
.node.risk-high::before{background:#dc2626;box-shadow:0 0 0 2px #fecaca}
.node.risk-medium::before{background:#d97706;box-shadow:0 0 0 2px #fcd34d}
.toc a.toc-year{font-size:11px;font-weight:800;letter-spacing:.08em;color:#94a3b8;padding-top:12px;margin-top:6px}
.toc a.toc-now{border-color:rgba(239,68,68,.35);background:rgba(239,68,68,.12);color:#fecaca}
.toc a.toc-now small{color:#fca5a5}
.toc a.toc-now.active{border-color:rgba(239,68,68,.55);background:rgba(239,68,68,.22);color:#fff}
.node-card{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:16px 18px;box-shadow:var(--shadow)}
.node-card.open{border-color:#93c5fd;box-shadow:0 0 0 1px rgba(37,99,235,.12),var(--shadow)}
.node-head{display:flex;flex-wrap:wrap;gap:10px;align-items:flex-start;justify-content:space-between;cursor:pointer}
.node-head h3{margin:0;font-size:17px}
.node-date-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:4px}
.node-date{font-size:12px;font-weight:800;color:var(--blue);letter-spacing:.02em}
.node-origin-chip{font-size:11px;font-weight:700;color:var(--muted);padding:2px 8px;border-radius:999px;border:1px solid var(--line);background:rgba(148,163,184,.12)}
.node-aka{font-size:12px;color:var(--muted);margin:4px 0 0}
.origin-box{margin:0 0 12px}
.origin-list{display:flex;flex-direction:column;gap:10px}
.origin-item{display:flex;flex-direction:column;gap:2px}
.origin-meta{font-size:11.5px;font-weight:700;color:var(--muted);letter-spacing:.02em}
.origin-title{font-size:13.5px;line-height:1.45}
.origin-title a{font-weight:650}
.origin-item.is-precursor .origin-meta{color:#94a3b8}
.origin-item.is-precursor .origin-title{opacity:.92}
.node-summary{font-size:13.5px;margin:8px 0 0;color:var(--ink);opacity:.88}
.node-meta{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.pill{font-size:11px;padding:3px 8px;border-radius:999px;background:#f1f5f9;border:1px solid var(--line);color:#475569}
.node-body{display:none;margin-top:14px;padding-top:14px;border-top:1px solid var(--line)}
.node-card.open .node-body{display:block}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:860px){.grid2{grid-template-columns:1fr}}
.kv{border:1px solid var(--line);border-radius:12px;padding:12px;background:var(--soft)}
.kv h4{margin:0 0 6px;font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
.kv p,.kv li{margin:0;font-size:13.5px;line-height:1.55}
.kv ul{margin:0;padding-left:18px}
.kv li{margin:4px 0}
.links{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}
.links a{font-size:12.5px;padding:5px 10px;border-radius:999px;border:1px solid var(--line);background:var(--paper)}
.learn-box{margin-top:12px;padding:12px 14px;border-radius:12px;background:#eff6ff;border:1px solid #bfdbfe}
.learn-box b{color:#1d4ed8}
.backdrop{display:none;position:fixed;inset:0;background:rgba(15,23,42,.45);z-index:30}
body.nav-open .backdrop{display:block}
@media(max-width:960px){
  .sidebar{transform:translateX(-105%);transition:transform .2s ease}
  body.nav-open .sidebar{transform:translateX(0)}
  .main{margin-left:0}.menu-btn{display:inline-flex}
  .content{padding:16px 12px 80px}
  .topbar{padding:12px}
  #view-article .md-body table{display:block;width:100%;overflow-x:auto}
  .tag-filter{gap:6px}
}
html[data-theme="dark"]{
  --ink:#e8eef7; --muted:#9aa8bc; --line:#2a364a; --soft:#0b1220; --paper:#151e32;
}
html[data-theme="dark"] body{color:var(--ink);background:var(--soft)}
html[data-theme="dark"] .main,
html[data-theme="dark"] .content,
html[data-theme="dark"] .node-card,
html[data-theme="dark"] .jobs,
html[data-theme="dark"] .kv,
html[data-theme="dark"] .job-chip{color:var(--ink)}
html[data-theme="dark"] h2,
html[data-theme="dark"] h3,
html[data-theme="dark"] h4{color:var(--ink)}
html[data-theme="dark"] .topbar{background:rgba(15,23,42,.92);color:var(--muted)}
html[data-theme="dark"] .crumb b{color:var(--ink)}
html[data-theme="dark"] .menu-btn,
html[data-theme="dark"] .links a,
html[data-theme="dark"] .tag,
html[data-theme="dark"] .job-chip,
html[data-theme="dark"] .node-card,
html[data-theme="dark"] .jobs,
html[data-theme="dark"] .kv{
  background:#151e32;border-color:var(--line);color:var(--ink)
}
html[data-theme="dark"] .book-cover{
  background:radial-gradient(900px 280px at 10% -10%,rgba(56,189,248,.12),transparent 55%),
    radial-gradient(700px 260px at 90% 0%,rgba(129,140,248,.1),transparent 50%),var(--paper);
  border-color:var(--line);color:var(--ink)
}
html[data-theme="dark"] .node-summary,
html[data-theme="dark"] .node-aka{color:var(--muted)}
html[data-theme="dark"] .node-date{color:#93c5fd}
html[data-theme="dark"] .node-origin-chip{background:#1a2438;border-color:var(--line);color:#9aa8bc}
html[data-theme="dark"] .origin-box{background:#151e32}
html[data-theme="dark"] .pill{background:#1a2438;border-color:var(--line);color:#9aa8bc}
html[data-theme="dark"] .learn-box{background:#1e3a5f;border-color:#60a5fa;color:var(--ink)}
html[data-theme="dark"] .learn-box b{color:#93c5fd}
html[data-theme="dark"] .job-chip:hover,
html[data-theme="dark"] .node-card.open{background:#1e3a5f;border-color:#60a5fa}
html[data-theme="dark"] .tag.low{background:#064e3b;color:#6ee7b7;border-color:#065f46}
html[data-theme="dark"] .tag.medium{background:#78350f;color:#fcd34d;border-color:#92400e}
html[data-theme="dark"] .tag.high{background:#7f1d1d;color:#fecaca;border-color:#991b1b}
html[data-theme="dark"] .node::before{border-color:#151e32}

/* Light theme: keep surfaces on paper tokens (theme.css also styles article) */
html[data-theme="light"] .node-card,
html[data-theme="light"] .jobs,
html[data-theme="light"] .kv,
html[data-theme="light"] .job-chip,
html[data-theme="light"] .tag,
html[data-theme="light"] .links a,
html[data-theme="light"] .menu-btn{
  background:var(--paper);border-color:var(--line);color:var(--ink)
}
html[data-theme="light"] .job-chip{background:var(--soft)}
html[data-theme="light"] .kv{background:var(--soft)}
html[data-theme="light"] .tag.low{background:#ecfdf5;color:#047857;border-color:#a7f3d0}
html[data-theme="light"] .tag.medium{background:var(--wa-warn-bg);color:var(--wa-warn-ink);border-color:var(--wa-warn-border)}
html[data-theme="light"] .tag.high{background:#fef2f2;color:#b91c1c;border-color:#fecaca}
html[data-theme="light"] .node-summary{color:#334155}
html[data-theme="light"] .pill{background:#f1f5f9;border-color:var(--line);color:#475569}
html[data-theme="light"] article.node,
html[data-theme="dark"] article.node{
  background:transparent !important;border-color:transparent !important;box-shadow:none !important;color:inherit !important;padding:0 !important
}
html[data-theme="dark"] .today-btn{background:#1e3a5f;border-color:#60a5fa;color:#93c5fd}
html[data-theme="dark"] .today-btn:hover{background:#1e40af;color:#fff}
html[data-theme="dark"] .year-mark span{background:#1e293b;color:#e2e8f0}
html[data-theme="dark"] .year-mark::before{background:#334155;border-color:#151e32;box-shadow:0 0 0 2px #64748b}
html[data-theme="dark"] .now-card{background:linear-gradient(135deg,#3b1d0f,#451a1a);border-color:#b45309;color:var(--ink)}
html[data-theme="dark"] .now-kicker{color:#fdba74}
html[data-theme="dark"] .now-card p{color:var(--muted)}
html[data-theme="dark"] .now-btn{background:#1a2438;border-color:#b45309;color:#fdba74}
html[data-theme="dark"] .now-mark::before{border-color:#151e32}
html[data-theme="light"] .toc a.toc-now{background:rgba(239,68,68,.08);border-color:rgba(239,68,68,.25);color:#b91c1c}
html[data-theme="light"] .toc a.toc-now small{color:#dc2626}
html[data-theme="light"] .toc a.toc-now.active{background:rgba(239,68,68,.14);color:#991b1b}
html[data-theme="dark"] .overview-stage{
  background:
    radial-gradient(1200px 420px at 8% -10%,rgba(56,189,248,.12),transparent 55%),
    radial-gradient(900px 380px at 92% 0%,rgba(129,140,248,.1),transparent 50%),
    linear-gradient(180deg,#0f172a 0%,#0b1220 100%)
}
html[data-theme="dark"] .chain::-webkit-scrollbar-thumb{background:#475569}
html[data-theme="dark"] .chain-node{color:var(--ink)}
html[data-theme="dark"] .chain-dot{border-color:#151e32}
html[data-theme="dark"] .chain-node:hover .chain-title,
html[data-theme="dark"] .chain-node.active .chain-title{color:#93c5fd}
html[data-theme="dark"] .chain-job{background:#1e3a5f;border-color:#60a5fa;color:#93c5fd}
html[data-theme="dark"] .chain-today .chain-title,
html[data-theme="dark"] .chain-today.active .chain-title{color:#fdba74}
html[data-theme="dark"] .chain-today .chain-job{background:#3b1d0f;border-color:#b45309;color:#fdba74}
html[data-theme="dark"] .tag{background:#151e32;border-color:var(--line);color:var(--ink)}
html[data-theme="dark"] .tag-filter-btn{background:#151e32;border-color:var(--line);color:var(--ink)}
html[data-theme="dark"] .tag-filter-btn:hover{border-color:#60a5fa;color:#93c5fd}
html[data-theme="dark"] .tag-filter-btn.is-active{background:#1e3a5f;border-color:#60a5fa;color:#93c5fd}
html[data-theme="dark"] .chain-tag{background:#1a2438;border-color:#334155;color:#94a3b8}
html[data-theme="dark"] .menu-btn,
html[data-theme="dark"] .tag{background:#151e32;border-color:var(--line);color:var(--ink)}
html[data-theme="light"] .toc .toc-head,
html[data-theme="light"] .toc .toc-year{color:#94a3b8}
html[data-theme="light"] .toc .toc-facets a{color:#64748b}
html[data-theme="light"] .toc .toc-facets a:hover{color:var(--ink);background:rgba(0,82,217,.06)}
html[data-theme="light"] .toc .toc-facets a.active{color:#1d4ed8;background:#eff6ff;border-color:#93c5fd}
html[data-theme="dark"] #view-article .reader{background:#151e32;border-color:var(--line);color:var(--ink);box-shadow:none}
html[data-theme="dark"] #view-article .md-lead{
  background:linear-gradient(180deg,#1a2438,#151e32);border-color:var(--line)
}
html[data-theme="dark"] #view-article .md-lead p{color:var(--muted)}
html[data-theme="dark"] #view-article .md-body a.md-link,
html[data-theme="dark"] #view-article .md-body a{color:#93c5fd}
html[data-theme="dark"] #view-article .md-body a.md-link:hover,
html[data-theme="dark"] #view-article .md-body a:hover{color:#bfdbfe}
html[data-theme="dark"] #view-article .md-figure{background:#0f172a;border-color:var(--line)}
html[data-theme="dark"] #view-article .md-figure figcaption{background:#151e32;border-top-color:var(--line);color:var(--muted)}
html[data-theme="dark"] #view-article .reader-head .node-date{background:#334155;color:var(--wa-on-primary)}
html[data-theme="dark"] #view-article .md-body blockquote,
html[data-theme="dark"] #view-article .md-body blockquote.md-key{
  background:linear-gradient(90deg,#1e3a5f,#1a2438);color:#93c5fd;border-left-color:#60a5fa
}
html[data-theme="dark"] #view-article .md-table{background:#151e32;border-color:var(--line)}
html[data-theme="dark"] #view-article .md-table th,
html[data-theme="dark"] #view-article .paper-card{background:#1a2438;border-color:var(--line)}
html[data-theme="dark"] #view-article .md-table table{background:#151e32}
html[data-theme="dark"] #view-article .md-table th{color:var(--ink)}
html[data-theme="dark"] .flow-diagram{
  background:linear-gradient(180deg,#1e3a5f,#151e32);border-color:#334155
}
html[data-theme="dark"] .flow-caption{color:#93c5fd}
html[data-theme="dark"] .flow-pane,
html[data-theme="dark"] .flow-step,
html[data-theme="dark"] .flow-chip{background:#1a2438;border-color:#334155;color:var(--ink)}
html[data-theme="dark"] .flow-step span,
html[data-theme="dark"] .flow-chip{color:var(--ink)}
html[data-theme="dark"] .flow-note{color:#94a3b8}
html[data-theme="dark"] #view-article .paper-card.role-primary{background:#1e3a5f;border-color:#60a5fa}
html[data-theme="dark"] #view-article .md-body p code{background:#1a2438;color:#e2e8f0}
html[data-theme="dark"] #view-article .stance-box{background:#3b1d0f;border-color:#b45309;color:#fdba74}
html[data-theme="dark"] #view-article .stance-box b,
html[data-theme="dark"] #view-article .stance-box p{color:#fdba74}
html[data-theme="dark"] .peek-card{background:#151e32;border-color:var(--line);color:var(--ink)}
html[data-theme="light"] .toc .toc-home{background:linear-gradient(90deg,rgba(0,82,217,.08),rgba(37,99,235,.05));border-color:rgba(0,82,217,.22);color:var(--ink)}
html[data-theme="light"] .toc .toc-home small{color:var(--muted)}
html[data-theme="light"] .side-links a{color:var(--muted)}
html[data-theme="light"] .side-links a:hover{color:var(--ink)}
html[data-theme="dark"] .back-timeline{background:#1a2438;border-color:var(--line);color:var(--ink)}
html[data-theme="dark"] .back-timeline:hover{border-color:#60a5fa;color:#93c5fd}