:root{
  --bg:#f4f6f4;--surface:#fff;--surface-2:#f4f6f4;--text:#182f28;--muted:#66746e;--border:#cfd9d3;
  --soft-border:#dce3df;--link:#315c47;--link-hover:#244635;--accent:#315c47;--accent-soft:#edf4e9;--warning:#fff4d6;
  --sidebar:260px;--toc:230px;--top:64px;--shadow:0 1px 3px rgba(24,47,40,.08);
}
[data-theme="dark"]{
  --bg:#111815;--surface:#1b2520;--surface-2:#25352b;--text:#e5ece8;--muted:#a9b7ae;--border:#4b5b52;
  --soft-border:#344039;--link:#b1d391;--link-hover:#d7f2a7;--accent:#b1d391;--accent-soft:#263d2f;--warning:#3c3218;
  --shadow:0 1px 3px rgba(0,0,0,.28);
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:'Golos Text',-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;line-height:1.65}a{color:var(--link);text-decoration:none}a:hover{color:var(--link-hover);text-decoration:underline}.topbar{height:var(--top);position:sticky;top:0;z-index:50;display:flex;align-items:center;gap:18px;padding:0 22px;background:var(--surface);border-bottom:1px solid var(--soft-border)}.brand{display:flex;align-items:center;gap:10px;color:var(--text);min-width:220px}.brand:hover{text-decoration:none}.brand-mark{display:grid;place-items:center;width:38px;height:38px;border:1px solid var(--text);border-radius:3px;font-family:Georgia,serif;font-size:25px}.brand strong{display:block;font-family:Georgia,serif;font-size:20px;line-height:1}.brand small{display:block;color:var(--muted);font-size:11px;letter-spacing:.18em;text-transform:uppercase;margin-top:3px}.top-search{max-width:620px;flex:1;height:40px;border:1px solid var(--border);background:var(--surface);display:flex;align-items:center;gap:8px;padding:0 10px;border-radius:2px}.top-search:focus-within{outline:2px solid var(--accent);outline-offset:-1px}.top-search input{border:0;outline:0;background:transparent;color:var(--text);width:100%;font:inherit}.top-search kbd{font-size:11px;color:var(--muted);border:1px solid var(--soft-border);background:var(--surface-2);padding:1px 6px;border-radius:3px}.icon-btn{border:0;background:transparent;color:var(--text);font-size:22px;cursor:pointer;padding:8px;border-radius:4px}.icon-btn:hover{background:var(--surface-2)}.layout{display:grid;grid-template-columns:var(--sidebar) minmax(0,1fr) var(--toc);max-width:1600px;margin:auto}.sidebar{position:sticky;top:var(--top);height:calc(100vh - var(--top));overflow:auto;padding:20px 16px;border-right:1px solid var(--soft-border);background:var(--surface)}.nav-heading{font-size:12px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;margin:18px 10px 6px}.nav-heading:first-child{margin-top:0}.nav-link{display:flex;justify-content:space-between;gap:8px;padding:7px 10px;margin:2px 0;color:var(--text);font-size:14px;border-radius:3px}.nav-link:hover{text-decoration:none;background:var(--surface-2)}.nav-link.active{background:var(--accent-soft);color:var(--link);font-weight:600;border-left:3px solid var(--accent);padding-left:7px}.nav-link span{color:var(--muted);font-size:12px}.sidebar-note{margin:28px 8px 8px;border-top:1px solid var(--soft-border);padding-top:14px;font-size:13px}.sidebar-note>*{display:block}.sidebar-note span{color:var(--link)}.sidebar-note small{color:var(--muted)}.content{background:var(--surface);min-height:calc(100vh - var(--top));padding:0 48px 50px;min-width:0}.wiki-page,.search-results{display:none;max-width:980px;margin:0 auto;padding:42px 0 30px}.wiki-page.active,.search-results.active{display:block}.breadcrumbs{font-size:13px;color:var(--muted);margin-bottom:18px}h1,h2,h3{font-family:Georgia,"Times New Roman",serif;font-weight:400;line-height:1.25}h1{font-size:38px;margin:.1em 0 .35em;padding-bottom:10px;border-bottom:1px solid var(--border)}h2{font-size:26px;margin:1.65em 0 .6em;padding-bottom:6px;border-bottom:1px solid var(--soft-border)}h3{font-size:20px}.lead{font-size:18px;color:var(--muted);max-width:850px}.eyebrow{text-transform:uppercase;letter-spacing:.08em;font-size:12px;color:var(--muted);font-weight:700;margin:0 0 4px}.page-heading{display:grid;grid-template-columns:1fr auto;gap:30px;align-items:start}.page-heading.compact{align-items:center}.status-card{display:flex;align-items:center;gap:10px;border:1px solid var(--soft-border);background:var(--surface-2);padding:11px 14px;min-width:210px;margin-top:22px}.status-card strong,.status-card small{display:block}.status-card small{color:var(--muted)}.status-dot{width:9px;height:9px;background:#14866d;border-radius:50%;box-shadow:0 0 0 4px rgba(20,134,109,.12)}.notice{padding:16px 18px;border-left:4px solid var(--accent);background:var(--accent-soft);margin:26px 0}.notice.warning{background:var(--warning);border-color:#ac6600}.notice p{margin:3px 0 0}.quick-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.quick-grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.quick-card{display:grid;grid-template-columns:42px 1fr;grid-template-rows:auto auto;column-gap:12px;border:1px solid var(--soft-border);background:var(--surface);padding:16px;color:var(--text);box-shadow:var(--shadow)}.quick-card:hover{text-decoration:none;border-color:var(--accent);background:var(--accent-soft)}.quick-card.static:hover{border-color:var(--soft-border);background:var(--surface)}.quick-card .quick-icon{grid-row:1/3;display:grid;place-items:center;width:42px;height:42px;background:var(--surface-2);border-radius:4px;font-size:20px}.quick-card strong{font-size:15px}.quick-card small{color:var(--muted)}.toc-box{border:1px solid var(--border);background:var(--surface-2);padding:16px 22px;max-width:800px}.toc-box ol{margin:0;padding-left:24px}.toc-box li{margin:5px 0}.fact-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;border:1px solid var(--soft-border);margin:24px 0}.fact-grid div{padding:13px 16px;border-bottom:1px solid var(--soft-border)}.fact-grid div:nth-child(odd){border-right:1px solid var(--soft-border)}.fact-grid dt{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.05em}.fact-grid dd{margin:3px 0 0;font-weight:600}.table-scroll{overflow:auto;border:1px solid var(--soft-border);margin:20px 0}table{width:100%;border-collapse:collapse;font-size:14px}th,td{padding:10px 12px;border:1px solid var(--soft-border);text-align:left;vertical-align:top}th{background:var(--surface-2);font-weight:600;position:relative}tbody tr:nth-child(even){background:color-mix(in srgb,var(--surface-2) 45%,transparent)}.formula{font-family:Georgia,serif;font-size:30px;padding:18px;border:1px solid var(--soft-border);background:var(--surface-2);display:inline-flex;align-items:center;gap:10px;flex-wrap:wrap}.formula span{font-style:italic}.formula small{width:100%;font-family:inherit;font-size:13px;color:var(--muted)}.exercise-toolbar{display:flex;gap:10px;margin:24px 0}.exercise-toolbar input,.exercise-toolbar select{height:42px;border:1px solid var(--border);background:var(--surface);color:var(--text);padding:0 12px;font:inherit}.exercise-toolbar input{flex:1}.exercise-group{margin:28px 0}.exercise-group h2{display:flex;align-items:center;justify-content:space-between}.exercise-group h2 span{font-family:inherit;font-size:12px;color:var(--muted);background:var(--surface-2);padding:3px 8px;border-radius:10px}.exercise-items{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.exercise-item{border:1px solid var(--soft-border);padding:11px 12px;background:var(--surface);font-size:14px}.exercise-item b{color:var(--muted);font-weight:500;margin-right:7px}.count-badge{display:flex;flex-direction:column;align-items:center;justify-content:center;width:115px;height:88px;background:var(--surface-2);border:1px solid var(--soft-border)}.count-badge strong{font-size:28px}.count-badge span{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.05em}.appendix-list{display:grid;gap:8px}.appendix-item{display:grid;grid-template-columns:64px 1fr;gap:12px;padding:12px 14px;border:1px solid var(--soft-border);background:var(--surface)}.appendix-item strong{color:var(--muted);font-size:13px}.external-btn{display:inline-block;background:var(--accent);color:var(--surface);padding:9px 14px;border-radius:3px;font-weight:600}.external-btn:hover{color:var(--surface);text-decoration:none;filter:brightness(.92)}.page-toc{position:sticky;top:var(--top);height:calc(100vh - var(--top));padding:34px 18px;border-left:1px solid var(--soft-border);background:var(--surface);font-size:13px}.page-toc p{font-weight:700;color:var(--muted);text-transform:uppercase;font-size:11px;letter-spacing:.07em}.page-toc a{display:block;padding:4px 0 4px 10px;border-left:2px solid var(--soft-border);color:var(--muted)}.page-toc a:hover{color:var(--link);text-decoration:none;border-left-color:var(--link)}.search-card{display:block;padding:16px;border:1px solid var(--soft-border);margin:9px 0;color:var(--text)}.search-card:hover{text-decoration:none;border-color:var(--accent);background:var(--accent-soft)}.search-card strong{display:block;color:var(--link)}.search-card small{color:var(--muted)}footer{max-width:980px;margin:30px auto 0;border-top:1px solid var(--soft-border);padding-top:22px;color:var(--muted);font-size:12px;display:flex;justify-content:space-between;gap:20px}.mobile-only{display:none}.overlay{display:none}.empty{padding:30px;border:1px dashed var(--border);color:var(--muted);text-align:center}
@media(max-width:1100px){.layout{grid-template-columns:240px minmax(0,1fr)}.page-toc{display:none}.content{padding:0 34px 40px}.brand{min-width:200px}}
@media(max-width:760px){:root{--top:58px}.mobile-only{display:block}.topbar{gap:8px;padding:0 10px}.brand{min-width:0}.brand strong{font-size:17px}.brand small{display:none}.brand-mark{width:34px;height:34px;font-size:22px}.top-search kbd{display:none}.layout{display:block}.sidebar{position:fixed;z-index:70;top:var(--top);left:0;width:285px;transform:translateX(-105%);transition:transform .2s ease}.sidebar.open{transform:translateX(0)}.overlay{position:fixed;z-index:60;inset:var(--top) 0 0;background:rgba(0,0,0,.35)}.overlay.show{display:block}.content{padding:0 18px 30px}.wiki-page,.search-results{padding-top:28px}h1{font-size:30px}.lead{font-size:16px}.page-heading{grid-template-columns:1fr}.status-card{margin-top:0}.quick-grid,.quick-grid.two,.exercise-items,.fact-grid{grid-template-columns:1fr}.fact-grid div:nth-child(odd){border-right:0}.exercise-toolbar{flex-direction:column}.count-badge{display:none}footer{flex-direction:column}.top-search{min-width:0}.top-search span{display:none}}

.document-actions{display:flex;gap:10px;align-items:center;margin:22px 0}.secondary-btn{display:inline-block;border:1px solid var(--border);background:var(--surface);color:var(--text);padding:8px 14px;border-radius:3px;font-weight:600}.secondary-btn:hover{text-decoration:none;background:var(--surface-2);color:var(--text)}.pdf-frame-wrap{border:1px solid var(--soft-border);background:var(--surface-2);padding:8px;margin:24px 0}.pdf-frame{display:block;width:100%;height:72vh;min-height:640px;border:0;background:white}.pdf-fallback{font-size:12px;color:var(--muted);margin:8px 4px 2px}.pdf-badge strong{font-size:24px}.quick-icon{font-size:16px!important;font-weight:700;color:var(--link)}@media(max-width:760px){.document-actions{align-items:stretch;flex-direction:column}.document-actions a{text-align:center}.pdf-frame{height:65vh;min-height:480px}}

.exercise-link{display:grid;grid-template-columns:auto 1fr auto;gap:8px;align-items:center;color:var(--text);text-decoration:none}.exercise-link:hover{border-color:var(--accent);background:var(--accent-soft);text-decoration:none}.exercise-link em{font-style:normal;font-size:12px;color:var(--link);white-space:nowrap}.appendix-link{color:var(--text);text-decoration:none;grid-template-columns:64px 1fr auto;align-items:center}.appendix-link:hover{border-color:var(--accent);background:var(--accent-soft);text-decoration:none}.appendix-link em{font-style:normal;font-size:12px;color:var(--link);white-space:nowrap}@media(max-width:760px){.exercise-link,.appendix-link{grid-template-columns:auto 1fr}.exercise-link em,.appendix-link em{display:none}}

/* Unified sidebar counters across Wiki index and article pages */
.sidebar .nav-link{align-items:center}
.sidebar .nav-link > span{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  flex:0 0 62px;
  width:62px;
  height:22px;
  padding:0 7px;
  border:1px solid var(--soft-border);
  border-radius:6px;
  background:var(--surface-2);
  color:var(--muted);
  font-size:11px;
  font-weight:700;
  line-height:1;
  white-space:nowrap;
  text-align:center;
  font-variant-numeric:tabular-nums;
}
.sidebar .nav-link.active > span{
  border-color:color-mix(in srgb,var(--accent) 35%,var(--soft-border));
  background:color-mix(in srgb,var(--accent-soft) 72%,var(--surface));
  color:var(--link);
}

/* Unified Wiki footer motto */
.wiki-footer{align-items:flex-start}
.wiki-footer-brand{display:flex;flex-direction:column;gap:3px}
.wiki-footer-brand strong{color:var(--text);font-size:13px}
.wiki-footer-motto{color:var(--link);font-size:12px;font-weight:700;letter-spacing:.01em}