:root{--bg:#07111b;--panel:#0d1c29;--panel2:#102433;--line:#284156;--text:#e8edf2;--muted:#93a4b2;--cyan:#5ee4ee;--green:#64dfa7;--gold:#f2c25b;--pink:#f06eab;--orange:#ef9062;--radius:14px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(circle at 26% 0,#123149 0,transparent 36%),var(--bg);color:var(--text);font:15px/1.5 Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}a{color:var(--cyan);text-decoration:none}a:hover{text-decoration:underline}.topbar{height:64px;padding:0 28px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:rgba(5,14,23,.88);position:sticky;top:0;z-index:5;backdrop-filter:blur(12px)}.brand{font-weight:800;letter-spacing:.15em;color:var(--text)}.brand span{color:var(--cyan);font-weight:600}.topbar nav{display:flex;gap:10px}.topbar nav a,.button{padding:9px 13px;border:1px solid var(--line);border-radius:8px;color:var(--text)}main{max-width:1460px;margin:auto;padding:0 28px}.hero{padding:78px 0 46px;border-bottom:1px solid var(--line)}.eyebrow{margin:0 0 10px;color:var(--gold);font:700 12px/1.2 ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.14em}.hero h1{font-size:clamp(48px,7vw,96px);line-height:.9;letter-spacing:-.055em;margin:0;max-width:1000px}.hero h1 span{color:var(--cyan)}.lead{font-size:20px;color:#bac6cf;max-width:800px;margin:30px 0}.hero-actions{display:flex;flex-wrap:wrap;gap:10px}.button.primary{background:var(--cyan);color:#04131c;border-color:var(--cyan);font-weight:800}.status-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:34px}.status-row span{padding:6px 9px;border:1px solid #315069;border-radius:999px;color:#a9bbc8;font:12px ui-monospace,monospace}.grammar,.matrix-section,.relations-section,.closeout{margin-top:22px;padding:28px;border:1px solid var(--line);border-radius:var(--radius);background:rgba(11,27,40,.88)}.grammar header,.section-heading{display:flex;justify-content:space-between;gap:26px;align-items:end}.grammar h2,.section-heading h2,.closeout h2{font-size:30px;margin:0}.grammar ol{display:grid;grid-template-columns:repeat(8,1fr);gap:8px;padding:0;margin:28px 0 12px;list-style:none}.grammar li{min-height:112px;padding:13px;border:1px solid var(--line);background:#0a1824;border-radius:10px;display:flex;flex-direction:column;gap:4px}.grammar li b{color:var(--gold);font:12px ui-monospace,monospace}.grammar li strong{font-size:17px}.grammar li span{color:var(--muted);font-family:ui-monospace,monospace}.boundary,.claim{color:var(--muted);border-left:2px solid var(--gold);padding-left:12px}.finding-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:22px}.finding{padding:20px;border:1px solid var(--line);border-top:3px solid var(--cyan);border-radius:var(--radius);background:var(--panel)}.finding small{color:var(--cyan);font:11px ui-monospace,monospace}.finding strong{display:block;font-size:19px;margin:8px 0}.finding p{color:var(--muted);margin:0}.finding.bounded{border-top-color:var(--green)}.finding.bounded small{color:var(--green)}.finding.negative{border-top-color:var(--pink)}.finding.negative small{color:var(--pink)}.finding.open{border-top-color:var(--gold)}.finding.open small{color:var(--gold)}.section-heading>p{max-width:440px;color:var(--muted);margin:0}.controls{display:flex;gap:12px;flex-wrap:wrap;margin:24px 0}.controls label{display:flex;gap:8px;align-items:center;color:var(--muted)}input,select{color:var(--text);background:#07131e;border:1px solid var(--line);border-radius:8px;padding:10px 12px}input{min-width:320px}.instrument-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.instrument{padding:18px;border:1px solid var(--line);border-radius:12px;background:linear-gradient(150deg,var(--panel2),#0a1722)}.instrument header{display:flex;justify-content:space-between;gap:14px}.instrument h3{font-size:18px;margin:0}.instrument .family{color:var(--cyan);font:11px ui-monospace,monospace}.pill{white-space:nowrap;height:max-content;padding:4px 7px;border:1px solid #3b5a70;border-radius:999px;color:var(--green);font:10px ui-monospace,monospace}.instrument dl{display:grid;grid-template-columns:72px 1fr;gap:7px 9px;margin:16px 0}.instrument dt{color:var(--muted);font:11px ui-monospace,monospace;text-transform:uppercase}.instrument dd{margin:0;color:#cbd5dc;font-size:13px}.instrument footer{display:flex;justify-content:space-between;gap:12px;border-top:1px solid var(--line);padding-top:12px}.instrument footer span{color:var(--muted);font-size:12px}.relation-list{display:grid;gap:8px;margin-top:24px}.relation{display:grid;grid-template-columns:1.1fr 130px 1.1fr 2fr;gap:12px;align-items:center;padding:13px;border:1px solid var(--line);border-radius:9px;background:#091824}.relation strong{font-size:13px}.relation .type{color:var(--gold);font:11px ui-monospace,monospace;text-transform:uppercase}.relation p{margin:0;color:var(--muted);font-size:12px}.relation em{color:var(--green);font-style:normal}.relation i{color:var(--pink);font-style:normal}.closeout{padding:42px;margin-bottom:24px}.closeout>p:not(.eyebrow):not(.claim){max-width:920px;font-size:18px;color:#c2ced7}.closeout-links{display:flex;gap:18px;margin:24px 0}body>footer{max-width:1460px;margin:auto;padding:24px 28px 42px;display:flex;justify-content:space-between;color:var(--muted);font:11px ui-monospace,monospace}@media(max-width:1100px){.grammar ol{grid-template-columns:repeat(4,1fr)}.finding-grid{grid-template-columns:repeat(2,1fr)}.instrument-grid{grid-template-columns:repeat(2,1fr)}.relation{grid-template-columns:1fr 110px 1fr}.relation p{grid-column:1/-1}}@media(max-width:700px){.topbar{padding:0 16px}.topbar nav a:last-child{display:none}main{padding:0 16px}.hero{padding-top:48px}.hero h1{font-size:48px}.grammar,.matrix-section,.relations-section,.closeout{padding:19px}.grammar header,.section-heading{display:block}.grammar ol{grid-template-columns:repeat(2,1fr)}.finding-grid,.instrument-grid{grid-template-columns:1fr}input{min-width:0;width:100%}.controls label{width:100%;display:grid}.relation{grid-template-columns:1fr}.relation p{grid-column:auto}.closeout-links{flex-direction:column}}
/* Multi-grid relation ledger */
.multigrid-section{margin-top:22px;padding:28px;border:1px solid var(--line);border-radius:var(--radius);background:rgba(11,27,40,.88)}
.multigrid-flow{display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap;margin:25px 0;color:var(--muted);font:11px ui-monospace,monospace;letter-spacing:.08em}.multigrid-flow span:nth-of-type(2){color:var(--cyan)}.multigrid-flow span:nth-of-type(4),.multigrid-flow span:nth-of-type(5),.multigrid-flow span:nth-of-type(6){color:var(--gold)}.multigrid-flow b{font-weight:400;color:#527086}
.multigrid-summary{display:grid;grid-template-columns:minmax(220px,.75fr) 1.25fr;align-items:center;gap:18px;padding:14px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.multigrid-summary small{display:block;color:var(--gold);font:10px ui-monospace,monospace}.multigrid-summary strong{font-size:23px;color:var(--cyan)}.multigrid-summary p{margin:0;color:#c8d2da}
.multigrid-nodes{display:grid;grid-template-columns:repeat(9,1fr);gap:7px;margin:18px 0}.multigrid-nodes button{appearance:none;min-height:94px;padding:11px;color:var(--text);background:#091a27;border:1px solid var(--line);border-radius:9px;text-align:left;display:flex;flex-direction:column;gap:3px;justify-content:center;cursor:pointer}.multigrid-nodes button:hover,.multigrid-nodes button.selected{border-color:var(--cyan);background:#103044;box-shadow:inset 0 0 0 1px rgba(94,228,238,.22)}.multigrid-nodes small{color:var(--gold);font:9px ui-monospace,monospace}.multigrid-nodes strong{font:17px ui-monospace,monospace}.multigrid-nodes span{color:var(--muted);font-size:11px}
.multigrid-legend{display:flex;gap:7px;flex-wrap:wrap;margin:8px 0 12px}.multigrid-legend span{padding:3px 7px;border-left:3px solid var(--muted);background:#091722;color:var(--muted);font:9px ui-monospace,monospace}.multigrid-legend .edge-exact{border-color:var(--green)}.multigrid-legend .edge-bounded{border-color:var(--cyan)}.multigrid-legend .edge-declared{border-color:var(--gold)}.multigrid-legend .edge-candidate{border-color:var(--orange)}.multigrid-legend .edge-visual-only{border-color:var(--pink)}
.multigrid-edges{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}.multigrid-edge{padding:15px;border:1px solid var(--line);border-left:3px solid var(--muted);border-radius:9px;background:#091824}.multigrid-edge.edge-exact{border-left-color:var(--green)}.multigrid-edge.edge-bounded{border-left-color:var(--cyan)}.multigrid-edge.edge-declared{border-left-color:var(--gold)}.multigrid-edge.edge-candidate{border-left-color:var(--orange)}.multigrid-edge.edge-visual-only{border-left-color:var(--pink)}.edge-route{display:flex;align-items:center;gap:8px}.edge-route strong{font:13px ui-monospace,monospace}.edge-route span{color:var(--gold)}.edge-route small{margin-left:auto;color:var(--muted);font:9px ui-monospace,monospace;text-transform:uppercase}.multigrid-edge h3{font-size:15px;margin:10px 0 5px}.multigrid-edge p{margin:0;color:var(--muted);font-size:11px}.multigrid-edge p b,.multigrid-edge p i,.multigrid-edge p em{font-style:normal;font-weight:600;margin-left:7px}.multigrid-edge p b{color:var(--green);margin-left:0}.multigrid-edge p i{color:var(--pink)}.multigrid-edge p em{color:var(--gold)}.multigrid-links{display:flex;gap:18px;margin:18px 0}
@media(max-width:1100px){.multigrid-nodes{grid-template-columns:repeat(5,1fr)}}
@media(max-width:700px){.multigrid-section{padding:19px}.multigrid-summary{grid-template-columns:1fr}.multigrid-nodes{grid-template-columns:repeat(3,1fr)}.multigrid-nodes button{min-height:82px;padding:8px}.multigrid-edges{grid-template-columns:1fr}.multigrid-links{flex-direction:column;gap:8px}}

/* Kappa / Rath 100-fold instrument */
.kappa-section{margin-top:22px;padding:28px;border:1px solid var(--line);border-radius:var(--radius);background:rgba(11,27,40,.88)}
.kappa-section code{color:var(--cyan)}
.kappa-equation{display:flex;align-items:center;justify-content:center;gap:14px;flex-wrap:wrap;margin:28px 0;padding:18px;border:1px solid var(--line);border-radius:12px;background:#081722;font:18px ui-monospace,monospace}
.kappa-equation strong{font-size:25px}.kappa-equation b{color:var(--cyan)}.kappa-equation i{color:var(--pink);font-style:normal}.kappa-equation em{color:var(--gold);font-style:normal}
.kappa-layout{display:grid;grid-template-columns:minmax(420px,1fr) 300px;gap:16px}.kappa-specials{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:8px}
.kappa-special,.kappa-grid button{appearance:none;color:var(--text);background:#091a27;border:1px solid var(--line);border-radius:9px;cursor:pointer}
.kappa-special{padding:13px;text-align:left;display:grid;grid-template-columns:1fr auto;gap:2px 12px}.kappa-special small{color:var(--pink);font:10px ui-monospace,monospace;letter-spacing:.08em}.kappa-special strong{font:17px ui-monospace,monospace}.kappa-special span{grid-column:1/-1;color:var(--muted);font-size:11px}.hinge-node small{color:var(--gold)}
.kappa-special:hover,.kappa-special.selected,.kappa-grid button:hover,.kappa-grid button.selected{border-color:var(--cyan);background:#103044;box-shadow:inset 0 0 0 1px rgba(94,228,238,.22)}
.kappa-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:6px}.kappa-grid button{aspect-ratio:1;padding:7px;display:grid;grid-template-columns:1fr auto;align-content:space-between;text-align:left}.kappa-grid small{grid-column:1/-1;color:var(--gold);font:10px ui-monospace,monospace}.kappa-grid strong{color:var(--cyan);font:15px ui-monospace,monospace}.kappa-grid span{color:var(--pink);font:12px ui-monospace,monospace}
.kappa-readout{padding:20px;border:1px solid var(--line);border-radius:12px;background:linear-gradient(160deg,#102535,#091722)}.kappa-readout>strong{display:block;margin:18px 0;font:31px ui-monospace,monospace;color:var(--cyan)}.kappa-readout dl{display:grid;grid-template-columns:78px 1fr;gap:9px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:16px 0}.kappa-readout dt{color:var(--muted);font:10px ui-monospace,monospace;text-transform:uppercase}.kappa-readout dd{margin:0;font-size:13px}.kappa-readout>p:not(.eyebrow){color:var(--muted);font-size:12px}.kappa-claim{margin:20px 0 0}.kappa-claim b:first-child{color:var(--green)}.kappa-claim b:nth-of-type(2){color:var(--gold)}
@media(max-width:1100px){.kappa-layout{grid-template-columns:1fr}}
@media(max-width:700px){.kappa-section{padding:19px}.kappa-layout{display:block}.kappa-readout{margin-top:12px}.kappa-specials{grid-template-columns:1fr}.kappa-grid{gap:3px}.kappa-grid button{padding:4px}.kappa-grid strong{font-size:12px}.kappa-grid span{font-size:10px}}

/* Geometria Nova / Resonance Cathedral model lineage */
.lineage-section{margin-top:22px;padding:28px;border:1px solid var(--line);border-radius:var(--radius);background:linear-gradient(145deg,rgba(15,39,54,.96),rgba(10,22,34,.94))}
.lineage-chain{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;gap:12px;align-items:center;margin:26px 0}.lineage-chain>span{min-height:118px;padding:18px;border:1px solid var(--line);border-radius:12px;background:#081722;display:flex;flex-direction:column;justify-content:center}.lineage-chain small,.lineage-metrics small{color:var(--gold);font:10px ui-monospace,monospace;letter-spacing:.1em}.lineage-chain strong{font-size:20px;margin:5px 0}.lineage-chain em{color:var(--muted);font-style:normal}.lineage-chain>b{color:var(--cyan);font:11px ui-monospace,monospace;text-align:center}.lineage-metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:9px}.lineage-metrics article{padding:17px;border:1px solid var(--line);border-top:3px solid var(--cyan);border-radius:10px;background:#091824}.lineage-metrics article:last-child{border-top-color:var(--pink)}.lineage-metrics strong{display:block;margin:8px 0;font:24px ui-monospace,monospace}.lineage-metrics p{margin:0;color:var(--muted);font-size:12px}.lineage-metrics code{color:var(--gold)}
@media(max-width:1100px){.lineage-chain{grid-template-columns:1fr}.lineage-chain>b{text-align:left}.lineage-metrics{grid-template-columns:repeat(2,1fr)}}
@media(max-width:700px){.lineage-section{padding:19px}.lineage-metrics{grid-template-columns:1fr}}