/* Ladder — visual system per DESIGN.md and ui/mockups/reference.html.
   Position and color carry meaning; vocabulary is skin. */
:root{--bg:#FAF9F5;--surface:#FFFFFF;--surface-2:#F4F2EC;--text:#1A1915;--text-2:#5F5E5A;--text-3:#8F8D85;--border:#E3E1D9;--accent:#185FA5;--radius:8px;--radius-card:12px;
--int-bg:#E6F1FB;--int-t:#0C447C;--int-s:#185FA5;--inv-bg:#FCEBEB;--inv-t:#791F1F;--inv-s:#A32D2D;--con-bg:#FAEEDA;--con-t:#633806;--con-s:#854F0B;--std-bg:#EEEDFE;--std-t:#3C3489;--std-s:#534AB7;--dsc-bg:#F1EFE8;--dsc-t:#444441;--dsc-s:#5F5E5A;
--warn-bg:#FAEEDA;--warn-t:#854F0B;--ok-bg:#EAF3DE;--ok-t:#3B6D11}
@media (prefers-color-scheme:dark){:root{--bg:#1A1915;--surface:#242320;--surface-2:#2C2B27;--text:#EDEBE3;--text-2:#B4B2A9;--text-3:#8F8D85;--border:#3A3934;--accent:#85B7EB;
--int-bg:#0C447C;--int-t:#B5D4F4;--int-s:#85B7EB;--inv-bg:#791F1F;--inv-t:#F7C1C1;--inv-s:#F09595;--con-bg:#633806;--con-t:#FAC775;--con-s:#EF9F27;--std-bg:#3C3489;--std-t:#CECBF6;--std-s:#AFA9EC;--dsc-bg:#444441;--dsc-t:#D3D1C7;--dsc-s:#B4B2A9;
--warn-bg:#633806;--warn-t:#FAC775;--ok-bg:#27500A;--ok-t:#C0DD97}}
*{box-sizing:border-box;margin:0}
html{background:var(--bg)}
body{background:var(--bg);color:var(--text);font:400 15px/1.6 -apple-system,"Segoe UI",Roboto,sans-serif;padding:24px;max-width:1120px;margin:0 auto}
@media (max-width:720px){body{padding:8px}}
a{color:var(--accent)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.skip{position:absolute;left:-999px;top:8px;background:var(--surface);padding:6px 10px;border-radius:var(--radius)}
.skip:focus{left:8px;z-index:10}
.ico{display:inline-flex;width:1em;height:1em;vertical-align:-.15em}
.ico svg{width:100%;height:100%}
.accent{color:var(--accent);font-size:20px}
.shell{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);overflow:hidden}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:10px 16px;border-bottom:1px solid var(--border)}
.brand{display:flex;align-items:center;gap:10px;font-weight:600;font-size:15px}
.brand .home{color:var(--text);text-decoration:none}
.badge{font-size:12px;padding:2px 9px;border-radius:10px;background:var(--int-bg);color:var(--int-t);font-weight:400}
.meta{font-size:12px;color:var(--text-3)}
.cols{display:flex;min-height:420px}
@media (max-width:720px){.cols{flex-direction:column}}
.nav{width:150px;flex:none;border-right:1px solid var(--border);padding:10px 8px;display:flex;flex-direction:column;gap:2px}
@media (max-width:720px){.nav{width:auto;flex-direction:row;border-right:none;border-bottom:1px solid var(--border)}}
.nav a{display:block;font-size:13px;padding:6px 10px;border-radius:var(--radius);color:var(--text-2);text-decoration:none}
.nav a.on{background:var(--surface-2);color:var(--text);font-weight:600}
.nav .ico{margin-right:6px;font-size:15px}
.workspace{display:flex;flex:1;min-width:0}
.workspace.column{flex-direction:column}
@media (max-width:900px){.workspace{flex-direction:column}}
.main{flex:1;padding:12px;display:flex;flex-direction:column;gap:5px;min-width:0}
.rung{display:flex;align-items:center;gap:10px;border-radius:var(--radius);padding:10px 12px;text-decoration:none;min-height:44px}
.rung.sel{outline:2px solid var(--accent);outline-offset:1px}
.rung .ico{font-size:17px}
.rung .nm{font-weight:600;font-size:14px;width:112px}
.rung .ct{font-size:12px;padding:1px 8px;border-radius:9px;background:rgba(255,255,255,.35)}
@media (prefers-color-scheme:dark){.rung .ct{background:rgba(0,0,0,.25)}}
.rung .ex{font-size:12px;margin-left:auto}
.f-int{background:var(--int-bg);color:var(--int-t)}.f-int .ct,.f-int .ex{color:var(--int-s)}
.f-inv{background:var(--inv-bg);color:var(--inv-t)}.f-inv .ct,.f-inv .ex{color:var(--inv-s)}
.f-con{background:var(--con-bg);color:var(--con-t)}.f-con .ct,.f-con .ex{color:var(--con-s)}
.f-std{background:var(--std-bg);color:var(--std-t)}.f-std .ct,.f-std .ex{color:var(--std-s)}
.f-dsc{background:var(--dsc-bg);color:var(--dsc-t)}.f-dsc .ct,.f-dsc .ex{color:var(--dsc-s)}
.elements{list-style:none;padding:0 0 4px 22px;display:flex;flex-direction:column;gap:2px}
.elements .el{display:flex;gap:10px;align-items:baseline;padding:6px 10px;border-radius:var(--radius);text-decoration:none;color:var(--text);font-size:13px}
.elements .el:hover{background:var(--surface-2)}
.elements .el.on{background:var(--surface-2);outline:2px solid var(--accent);outline-offset:1px}
.elements .ref{font-weight:600;flex:none;width:64px;color:var(--text-2)}
.elements .st{flex:1;min-width:0}
.elements .empty{padding:6px 10px}
.side{width:296px;flex:none;border-left:1px solid var(--border);padding:16px}
@media (max-width:900px){.side{width:auto;border-left:none;border-top:1px solid var(--border)}}
.k{font-size:11px;color:var(--text-3);letter-spacing:.05em;text-transform:uppercase;margin-bottom:4px}
.statement{font-size:14px;margin-bottom:12px}
.side table,.record table{width:100%;font-size:13px;border-collapse:collapse}
.side td,.record td{padding:3px 0;vertical-align:top}
.side td:first-child,.record td:first-child{color:var(--text-2);width:34%}
.side td:last-child,.record td:last-child{text-align:right}
.chip{display:inline-block;font-size:11px;padding:1px 7px;border-radius:8px;background:var(--surface-2);color:var(--text-2);letter-spacing:0;text-transform:none;vertical-align:middle}
.chip.warn{background:var(--warn-bg);color:var(--warn-t)}.chip.ok{background:var(--ok-bg);color:var(--ok-t)}
.hr{border-top:1px solid var(--border);margin:12px 0}
.rationale{font-size:13px;color:var(--text-2)}
.sources{list-style:none;padding:0;margin-top:6px;font-size:12px}
.unsourced{margin-top:8px;font-size:12px}
.button,button{display:inline-block;width:100%;margin-top:12px;text-align:center;font:600 13px/1 inherit;color:var(--text);background:transparent;border:1px solid var(--border);border-radius:var(--radius);padding:9px 13px;text-decoration:none;cursor:pointer}
.foot{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:8px 16px;border-top:1px solid var(--border);font-size:12px;color:var(--text-3)}
.record{padding:16px;display:flex;flex-direction:column;gap:12px}
.record h1{font-size:18px;font-weight:600;line-height:1.4}
.crumb{font-size:13px;color:var(--text-2)}
.record-head{display:flex;gap:14px;align-items:flex-start}
.mini{list-style:none;padding:0;display:flex;flex-direction:column;gap:2px;flex:none;width:28px}
.mini li{height:8px;border-radius:2px;opacity:.55}
.mini li.here{opacity:1;outline:2px solid var(--accent);outline-offset:1px}
.two{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.3fr);gap:12px}
@media (max-width:900px){.two{grid-template-columns:1fr}}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);padding:14px 16px}
.tl{list-style:none;padding:0;display:flex;flex-direction:column}
.tl li{display:flex;gap:12px;padding:10px 0;border-bottom:1px solid var(--border);font-size:14px}
.tl li:last-child{border-bottom:none}
.tl .detail{font-size:13px;color:var(--text-2)}
.tl .ref{font-weight:600;color:var(--text-2);text-decoration:none;margin-right:4px}
.dot{width:10px;height:10px;border-radius:50%;margin-top:7px;flex:none;background:var(--text-3)}
.dot.f-int{background:var(--int-s)}.dot.f-inv{background:var(--inv-s)}.dot.f-con{background:var(--con-s)}.dot.f-std{background:var(--std-s)}.dot.f-dsc{background:var(--dsc-s)}
.dot.dot-ratified{background:var(--ok-t)}.dot.dot-conflict{background:var(--warn-t)}.dot.dot-retired{background:var(--text-3)}
.move{display:flex;align-items:center;gap:8px;margin:6px 0}
.band{font-size:12px;font-weight:600;padding:4px 10px;border-radius:var(--radius)}
.grow{flex:1;min-width:0}
.list th{text-align:left;font-size:12px;color:var(--text-2);font-weight:600;padding:4px 0;border-bottom:1px solid var(--border)}
.list td{padding:6px 0;border-bottom:1px solid var(--border);text-align:left}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}