/* AVYR Gen2 — The Structural Field · design tokens + shared components */
:root{
  --night:#060810; --night2:#0b1020; --line:#1c2335; --hairline:#141a2a;
  --ink:#e8ecf4; --mute:#9aa3b4; --dim:#788192;
  --ridge:#f0b429; --signal:#35e0c0; --deficit:rgba(240,180,41,.18); --surplus:rgba(53,224,192,.12);
  --serif:'Space Grotesk',system-ui,sans-serif;
  --mono:'IBM Plex Mono',monospace;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--night);color:var(--ink);font-family:var(--serif);-webkit-font-smoothing:antialiased;line-height:1.6}
.mono{font-family:var(--mono)}
a{color:var(--signal);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1180px;margin:0 auto;padding:0 28px}
::selection{background:rgba(240,180,41,.25)}

/* header */
.hd{display:flex;align-items:center;gap:28px;padding:18px 28px;border-bottom:1px solid var(--line);position:sticky;top:0;background:var(--night);z-index:50}
.hd .logo{display:flex;align-items:center;gap:10px;font-weight:600;font-size:17px;color:var(--ink)}
.hd .logo a.wordmark{color:var(--ink);text-decoration:none;display:flex;align-items:baseline;gap:10px;letter-spacing:-.01em}
.hd .logo .sub{font-family:var(--mono);font-weight:400;font-size:10px;color:var(--mute);letter-spacing:.14em;text-transform:uppercase}
.hd .logo a.wordmark:hover{color:var(--ink);text-decoration:none}
.hd nav{display:flex;gap:2px;margin-left:6px}
.hd nav a{color:var(--mute);font-size:13.5px;padding:6px 0;margin:0 12px;border-bottom:1px solid transparent}
.hd nav a:hover{color:var(--ink);text-decoration:none}
.hd nav a.on{color:var(--ink);border-bottom-color:var(--ridge)}
.hd .lang{margin-left:auto;display:flex;gap:6px;font-family:var(--mono);font-size:11px}
.hd .lang button{background:none;border:1px solid var(--line);color:var(--mute);padding:4px 9px;border-radius:2px;cursor:pointer;font-family:var(--mono);font-size:10.5px;letter-spacing:.05em}
.hd .lang button.on{color:var(--signal);border-color:var(--signal)}
.hd .rec{margin-left:0;font-family:var(--mono);font-size:10.5px;color:var(--dim);letter-spacing:.08em;text-transform:uppercase}

/* hero */
.hero{padding:36px 0 24px}
.hero .k{font-family:var(--mono);font-size:11px;letter-spacing:.2em;color:var(--signal);text-transform:uppercase;margin-bottom:16px}
.hero h1{font-size:clamp(28px,4vw,48px);font-weight:600;letter-spacing:-.02em;line-height:1.05;max-width:820px}
.hero h1 .g{color:var(--ridge)}
.hero .sub{margin-top:18px;font-size:15.5px;line-height:1.7;color:var(--mute);max-width:560px}

/* field */
.field{border:1px solid var(--line);background:var(--night2);margin:24px 0;border-radius:2px;position:sticky;top:74px;z-index:2}
.field .fh{display:flex;justify-content:space-between;align-items:center;padding:13px 18px;border-bottom:1px solid var(--hairline);font-family:var(--mono);font-size:11px;letter-spacing:.08em;color:var(--dim);text-transform:uppercase}
.field .fh .v{color:var(--mute);text-transform:none}
.field svg{display:block;width:100%;height:auto}

/* readout + controls */
.readout{display:flex;flex-wrap:wrap;border-top:1px solid var(--hairline)}
.readout .cell{flex:1 1 40%;min-width:0;padding:13px 16px;border-right:1px solid var(--hairline)}
.readout .cell:last-child{border-right:0}
.readout .cl{font-family:var(--mono);font-size:9px;letter-spacing:.16em;color:var(--dim);text-transform:uppercase;margin-bottom:6px}
.readout .cv{font-family:var(--mono);font-size:17px;color:var(--ink)}
.readout .cv.def{color:var(--ridge)}
.readout .cv.sur{color:var(--signal)}
.controls{display:flex;align-items:center;gap:18px;padding:14px 18px;border-top:1px solid var(--hairline);flex-wrap:wrap}
.controls button{background:var(--night);border:1px solid var(--line);color:var(--mute);font-family:var(--mono);font-size:11px;padding:6px 12px;cursor:pointer;border-radius:2px;letter-spacing:.05em}
.controls button:hover{color:var(--ink);border-color:var(--mute)}
.controls button.playing{color:var(--signal);border-color:var(--signal)}
.controls label{font-family:var(--mono);font-size:10.5px;color:var(--dim);letter-spacing:.06em;text-transform:uppercase;display:flex;flex-direction:column;gap:6px}
.controls input[type=range]{width:100%;accent-color:var(--ridge)}
.controls .val{font-family:var(--mono);font-size:12px;color:var(--ink)}
.controls .val b{color:var(--ridge)}

/* plate (claim/proof) */
.plate{border:1px solid var(--line);background:var(--night2);margin:26px 0;border-radius:2px}
.plate .ph{display:flex;align-items:baseline;gap:12px;padding:16px 20px;border-bottom:1px solid var(--hairline)}
.plate .code{font-family:var(--mono);font-size:13px;color:var(--ridge)}
.plate .nm{font-size:20px;font-weight:600}
.plate .fam{font-family:var(--mono);font-size:9.5px;letter-spacing:.14em;color:var(--dim);text-transform:uppercase;margin-left:auto}
.plate .grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:1px;background:var(--line)}
.plate .cell{background:var(--night2);padding:20px;min-width:0}
.plate .cl{font-family:var(--mono);font-size:9.5px;letter-spacing:.2em;color:var(--dim);text-transform:uppercase;margin-bottom:12px}
.plate .cl.claim{color:var(--signal)}.plate .cl.proof{color:var(--ridge)}
.plate .claim-text{font-size:14px;line-height:1.6;color:var(--ink)}
.plate .formula{font-family:var(--mono);font-size:13.5px;line-height:1.9;color:var(--ink);background:var(--night);border:1px solid var(--hairline);padding:13px 15px;border-radius:2px;overflow-x:auto;white-space:nowrap}
.plate .formula .v{color:var(--signal)}

/* classification badge */
.badge{display:inline-block;font-family:var(--mono);font-size:9px;letter-spacing:.08em;text-transform:uppercase;padding:2px 7px;border-radius:2px;border:1px solid var(--line);color:var(--mute)}
.badge.std{color:var(--signal);border-color:rgba(53,224,192,.35)}
.badge.est{color:#8fd8ff;border-color:rgba(143,216,255,.3)}
.badge.drv{color:var(--ridge);border-color:rgba(240,180,41,.35)}
.badge.proxy,.badge.exp,.badge.nn{color:#e08a6a;border-color:rgba(224,138,106,.35)}

/* matrix page layout with left rail — analytical, not SaaS sidebar
   Gen2.2: full-bleed shell — rail hugs the viewport gutter (x=0), no centered
   island. Header content aligns to the same left edge. */
.matrix-page{display:grid;grid-template-columns:230px 1fr;gap:0;max-width:none;margin:0;padding:0}
.rail{background:var(--night2);border-right:1px solid var(--line);height:100vh;position:sticky;top:66px;overflow-y:auto;padding:26px 14px 100px;scrollbar-width:thin;scrollbar-color:var(--line) transparent;padding-left:0}
.rail-head{font-family:var(--mono);font-size:10.5px;letter-spacing:.2em;color:var(--dim);text-transform:uppercase;margin-bottom:18px;padding:0 10px 0 28px;display:flex;align-items:center;justify-content:space-between}
.rail-head h1{font-family:inherit;font-size:inherit;letter-spacing:inherit;color:inherit;text-transform:inherit;font-weight:500;margin:0;padding:0}
.rail-head .count{color:var(--ridge);font-size:10px}
.rail-nav{display:flex;flex-direction:column;gap:1px;padding-left:28px}
.rail-fam{display:flex;align-items:center;justify-content:space-between;padding:9px 10px 9px 0;border-left:2px solid transparent;color:var(--mute);font-size:12.5px;text-decoration:none;line-height:1.35}
.rail-fam:hover{background:var(--night);color:var(--ink);text-decoration:none;border-left-color:var(--line)}
.rail-fam.on{background:var(--night);color:var(--ink);border-left-color:var(--ridge);font-weight:500}
.rail-fam .fam-count{font-family:var(--mono);font-size:9.5px;color:var(--dim)}
.rail-fam.on .fam-count{color:var(--ridge)}
.rail-foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--hairline);font-size:10.5px;color:var(--dim);font-family:var(--mono);letter-spacing:.05em;padding-left:28px}
.matrix-content{min-width:0;padding:0 28px 60px 0}
@media(max-width:1024px){
  .matrix-page{grid-template-columns:1fr}
  .rail{position:static;height:auto;border-right:none;border-bottom:1px solid var(--line);padding:14px 16px}
  .rail-head{margin-bottom:10px;padding-left:10px}
  .rail-nav{padding-left:10px}
  .rail-foot{display:none}
  .rail-nav{flex-direction:row;flex-wrap:wrap;gap:4px}
  .rail-fam{border-left:none;border-bottom:1px solid transparent;padding:6px 10px}
  .rail-fam.on{border-bottom-color:var(--ridge);background:none}
  .matrix-content{padding:0 16px 40px}
}
/* matrix rows — dense, scan-friendly, data as ornament */
.fam-head{font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;color:var(--ridge);text-transform:uppercase;margin:22px 0 6px;display:flex;align-items:center;gap:10px}
.fam-head .n{color:var(--dim);font-size:10px}
.plate-row{display:grid;grid-template-columns:52px 1fr 150px auto;gap:1px;background:var(--line);border:1px solid var(--line);margin-bottom:1px;transition:border-color .12s}
.plate-row:hover{background:var(--ridge);border-color:var(--mute)}
.plate-row .folio{background:var(--night2);padding:10px 8px;font-family:var(--mono);font-size:10.5px;color:var(--dim);display:flex;align-items:center;justify-content:center;letter-spacing:.08em}
.plate-row:hover .folio{color:var(--ridge)}
.plate-row .cell{background:var(--night2);padding:11px 16px}
.plate-row .n{font-size:13.5px;font-weight:500;color:var(--ink)}
.plate-row .f{font-family:var(--mono);font-size:9px;color:var(--dim);letter-spacing:.08em;text-transform:uppercase;margin-top:2px}
.plate-row .fp{background:var(--night2);padding:8px 10px;display:flex;align-items:center;justify-content:flex-end}
.plate-row .fp svg{display:block}
.plate-row .meta{background:var(--night2);padding:11px 14px;display:flex;align-items:center;gap:8px;justify-content:flex-end}
.plate-row .meta .unit{font-family:var(--mono);font-size:10px;color:var(--dim)}

/* family teaser tiles (home) */
.fam-tiles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:2px;margin-top:8px}
.fam-tile{background:var(--night2);padding:16px 18px;display:block;text-decoration:none;transition:background .12s}
.fam-tile:hover{background:var(--night)}
.fam-tile .t-head{display:flex;justify-content:space-between;align-items:baseline;font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;color:var(--dim);text-transform:uppercase;margin-bottom:10px}
.fam-tile .t-folio{color:var(--ridge)}
.fam-tile .t-count{color:var(--signal)}
.fam-tile .t-name{font-size:16px;font-weight:600;color:var(--ink);line-height:1.3}
.fam-tile .t-note{font-family:var(--mono);font-size:9.5px;color:var(--dim);letter-spacing:.06em;text-transform:uppercase;margin-top:8px}
.fam-tile:hover .t-name{color:var(--ridge)}
@media(max-width:720px){.fam-tiles{grid-template-columns:1fr}}

/* left-edge micro-rail (home, appears on scroll past the field) */
.rail-ctx{position:fixed;left:14px;top:50%;transform:translateY(-50%);display:flex;flex-direction:column;gap:12px;z-index:5}
.rail-ctx a{width:10px;height:10px;border:1px solid var(--line);border-radius:50%;display:block;background:var(--night);transition:background .12s,border-color .12s}
.rail-ctx a:hover,.rail-ctx a.on{background:var(--ridge);border-color:var(--ridge)}
@media(max-width:1024px){.rail-ctx{display:none}}

/* filters */
.filters{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0}
.filters button{background:none;border:1px solid var(--line);color:var(--mute);font-family:var(--mono);font-size:10.5px;padding:4px 10px;border-radius:2px;cursor:pointer;letter-spacing:.04em}
.filters button.on{color:var(--signal);border-color:var(--signal)}

/* section */
.sec{margin:34px 0}
.sec + .sec{margin-top:-10px}
.sec#guide{margin-top:-6px}
.sec h2{font-size:24px;font-weight:600;letter-spacing:-.01em;margin-bottom:12px}
.sec p{font-size:14.5px;line-height:1.7;color:var(--mute);max-width:720px}
/* progressive disclosure (details/summary) */
.sec.detail summary{cursor:pointer;list-style:none;position:relative}
.sec.detail summary::-webkit-details-marker{display:none}
.sec.detail summary h2{display:inline-block}
.sec.detail summary::before{content:'+';font-family:var(--mono);color:var(--signal);margin-right:10px;font-weight:500}
.sec.detail[open] summary::before{content:'−'}
.sec.detail summary:hover h2{color:var(--ridge)}
.sec.detail{padding:12px 0;border-top:1px solid var(--hairline)}
/* step-through guide */
.steps{margin:10px 0 0 0;padding-left:0;list-style:none;counter-reset:step}
.steps li{position:relative;padding:8px 0 8px 34px;font-size:13.5px;line-height:1.6;color:var(--mute);counter-increment:step}
.steps li::before{content:counter(step);position:absolute;left:0;top:8px;font-family:var(--mono);font-size:11px;color:var(--ridge);border:1px solid var(--line);width:20px;height:20px;display:flex;align-items:center;justify-content:center;border-radius:2px}

/* footer */
.ft{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:24px 28px;border-top:1px solid var(--line);margin-top:44px}
.ft .mark-sm{font-family:var(--mono);font-size:11px;color:var(--dim)}
.ft a{color:var(--mute);font-family:var(--mono);font-size:11px}
.ft a:hover{color:var(--ink)}

/* attribution panel (ridge → branch precision) */
.attribution{border:1px solid var(--line);background:var(--night2);margin:20px 0;border-radius:2px;padding:18px 20px}
.attribution .att-lab{display:block;font-family:var(--mono);font-size:9px;letter-spacing:.18em;color:var(--dim);text-transform:uppercase;margin-bottom:8px}
.att-state{font-size:15px;font-weight:600;margin-bottom:12px}
.att-state.def{color:var(--ridge)}.att-state.sur{color:var(--signal)}
.att-state b{font-family:var(--mono);font-weight:500}
.att-rel{font-size:13px;color:var(--mute);margin-bottom:14px}
.att-rel .mono{color:var(--ink)}
.att-branches{display:flex;flex-direction:column;gap:6px;margin-bottom:10px}
.att-branch{display:grid;grid-template-columns:34px 1fr auto auto;gap:10px;align-items:center;background:var(--night);border:1px solid var(--hairline);border-radius:2px;padding:9px 12px;color:var(--ink);font-size:13px}
.att-branch:hover{border-color:var(--ridge);text-decoration:none}
.att-branch .code{font-family:var(--mono);font-size:12px;color:var(--ridge)}
.att-branch b{font-family:var(--mono);font-weight:500;font-size:12.5px}
.att-branch .role{font-family:var(--mono);font-size:10.5px;color:var(--mute)}
.att-note{font-size:11.5px;color:var(--dim);line-height:1.6;margin-top:8px}
@media(max-width:640px){
  .att-branch{grid-template-columns:30px 1fr auto}
  .att-branch .role{display:none}
}

@media(max-width:760px){
  .hd nav{display:none}.hd .rec{display:none}
  .plate .grid{grid-template-columns:minmax(0,1fr)}
  .plate-row{grid-template-columns:44px 1fr}
  .plate-row .fp{display:none}
  .plate-row .meta{display:none}
  .controls{flex-direction:column;align-items:stretch}
  .controls label{width:100%!important}
  .controls button{padding:13px 16px;font-size:12px;min-height:44px}
  .controls input[type=range]{min-height:40px}
  .controls select{min-height:40px;padding:8px}
  .scrub-row{min-height:40px}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
/* focus-visible rings for keyboard users (range inputs, controls) */
input[type=range]:focus-visible, select:focus-visible, button:focus-visible, a:focus-visible{
  outline:2px solid var(--ridge);outline-offset:2px;border-radius:1px
}

/* mobile-only primary nav (header nav hidden at <=760px) */
.mnav{display:none}
@media(max-width:760px){
  .mnav{display:flex;justify-content:center;gap:26px;padding:16px 28px 24px}
  .mnav a{color:var(--mute);font-family:var(--mono);font-size:12.5px;letter-spacing:.03em}
  .mnav a:hover{color:var(--ink);text-decoration:none}
}

/* method page — layer band */
.layer-band{display:grid;grid-template-columns:14fr 55fr 19fr 9fr;height:64px;border:1px solid var(--line);margin:16px 0}
.layer-band div{display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:10px;letter-spacing:.08em;color:var(--mute);border-right:1px solid var(--line)}
.layer-band div:last-child{border-right:0}
.layer-band b{font-family:var(--mono);color:var(--ink);font-size:18px;font-weight:500}
.layer-band .l1{background:rgba(53,224,192,.04)}.layer-band .l2{background:rgba(53,224,192,.09)}.layer-band .l3{background:rgba(240,180,41,.1)}
.stars{display:flex;flex-wrap:wrap;gap:9px 16px;margin:14px 0}
.stars .star{font-family:var(--mono);font-size:11.5px;color:var(--mute);display:flex;align-items:center;gap:7px}
.stars .star i{width:5px;height:5px;border-radius:50%;background:var(--signal);display:inline-block}
.stars .star.derived i{background:var(--ridge)}