/* Layout: reference-app shell (library sidebar | chapter | key-numbers rail). Each section is a "spread": a hairline grid of cells, each cell = name, architect sketch, short bullets, keep-in-mind. */
:root{
  --bg:#FFFFFF; --surface:#F5F5F1; --ink:#171716; --ink-2:#62615C; --line:#E4E3DE; --line-2:#C4C3BC;
  --accent:#2F5A4C; --warn:#A0412D;
  --f-display:'Instrument Serif', 'Iowan Old Style', Georgia, serif;
  --f-body:'Schibsted Grotesk', 'Helvetica Neue', Arial, sans-serif;
  --f-mono:'IBM Plex Mono', ui-monospace, Menlo, monospace;
  --side:264px; --rail:240px;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#121312; --surface:#1A1B1A; --ink:#ECECE7; --ink-2:#A4A49E; --line:#2A2B29; --line-2:#3E3F3C;
  --accent:#8CC2AE; --warn:#E59A84; color-scheme:dark }}
:root[data-theme="dark"]{
  --bg:#121312; --surface:#1A1B1A; --ink:#ECECE7; --ink-2:#A4A49E; --line:#2A2B29; --line-2:#3E3F3C;
  --accent:#8CC2AE; --warn:#E59A84; color-scheme:dark }

*{box-sizing:border-box}
body{background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:16px;line-height:1.55;-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top, 0px);z-index:30;background:var(--bg)}
a{color:inherit}
button{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
h1,h2,h3{margin:0;font-weight:400;text-wrap:balance}
p{margin:0}
.eyebrow{font-family:var(--f-mono);font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2)}
.muted{color:var(--ink-2)}
.ink{color:var(--ink);font-weight:600}
.acc{color:var(--accent)}
.warn{color:var(--warn)}

/* top bar */
.top{position:sticky;top:env(safe-area-inset-top, 0px);z-index:20;background:var(--bg);border-bottom:1px solid var(--line);
  padding-left:max(16px, env(safe-area-inset-left, 0px));padding-right:max(16px, env(safe-area-inset-right, 0px))}
.top-in{height:60px;display:flex;align-items:center;gap:16px}
.brand{font-family:var(--f-display);font-size:25px;white-space:nowrap;background:none;border:0;padding:0;cursor:pointer}
.brand i{color:var(--ink-2)}
.menu{display:none;background:none;border:1px solid var(--line-2);border-radius:6px;padding:6px 10px;cursor:pointer;font-size:14px}
.search{margin-left:auto;display:flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:8px;padding:6px 10px;width:min(280px,40vw);background:var(--surface)}
.search input{border:0;outline:0;background:transparent;font:inherit;font-size:14.5px;width:100%;color:var(--ink)}
.checked{font-family:var(--f-mono);font-size:11.5px;color:var(--ink-2);white-space:nowrap}
.gear-wrap{position:relative}
.gear{display:flex;align-items:center;justify-content:center;width:34px;height:34px;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--ink-2);cursor:pointer}
.gear:hover,.gear[aria-expanded="true"]{color:var(--ink);border-color:var(--line-2)}
.gear svg{transition:transform .3s}.gear[aria-expanded="true"] svg{transform:rotate(45deg)}
.settings{position:absolute;right:0;top:calc(100% + 8px);width:236px;background:var(--bg);border:1px solid var(--line);border-radius:10px;box-shadow:0 12px 32px rgba(0,0,0,.12);padding:14px;z-index:40}
.settings h6{margin:0 0 10px;font-family:var(--f-mono);font-weight:500;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2)}
.seg{display:grid;grid-template-columns:repeat(3,1fr);gap:4px;background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:3px}
.seg button{display:flex;flex-direction:column;align-items:center;gap:5px;padding:8px 4px 7px;border:0;border-radius:6px;background:none;color:var(--ink-2);font:inherit;font-size:12.5px;cursor:pointer}
.seg button svg{width:18px;height:18px}
.seg button[aria-checked="true"]{background:var(--bg);color:var(--ink);box-shadow:0 1px 3px rgba(0,0,0,.1)}
.settings p{margin:10px 2px 0;font-size:12px;line-height:1.4;color:var(--ink-2)}
@media (max-width:760px){.checked{display:none}}



/* code citations */
.cite{display:inline-flex;align-items:center;margin:0 0 0 5px;padding:1px 5px 0;border:1px solid var(--line-2);border-radius:4px;background:var(--bg);color:var(--accent);font-family:var(--f-mono);font-size:10.5px;letter-spacing:.02em;line-height:1.5;vertical-align:1px;cursor:pointer;white-space:nowrap}
.cite:hover,.cite[aria-expanded="true"]{border-color:var(--accent);background:var(--surface)}
.citepop{position:absolute;z-index:60;width:min(320px,calc(100vw - 32px));background:var(--bg);border:1px solid var(--line);border-radius:10px;box-shadow:0 14px 36px rgba(0,0,0,.16);padding:14px 16px}
.citepop .cp-code{font-family:var(--f-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2)}
.citepop .cp-sec{font-family:var(--f-mono);font-size:15px;color:var(--ink);margin:4px 0 2px}
.citepop .cp-t{font-weight:600;font-size:14px;margin:0 0 6px}
.citepop p{margin:0 0 10px;font-size:13.5px;line-height:1.45;color:var(--ink)}
.citepop a{font-family:var(--f-mono);font-size:12px;color:var(--accent)}
.citepop .cp-note{margin:10px 0 0;font-size:11.5px;color:var(--ink-2)}

/* AI sketch illustrations */
.art{position:relative}
.art img{display:block;width:100%;height:auto;mix-blend-mode:multiply}
.cell .art img{aspect-ratio:3/2;object-fit:contain;max-height:210px}
.figure .art img{max-height:none}
.art .ov{position:absolute;inset:0;pointer-events:none}
.mk2{position:absolute;transform:translate(-50%,-50%);width:clamp(16px,1.7vw,22px);height:clamp(16px,1.7vw,22px);border-radius:50%;background:var(--accent);color:var(--bg);box-shadow:0 0 0 2px var(--bg);display:flex;align-items:center;justify-content:center;font-family:var(--f-mono);font-size:clamp(9px,.85vw,11.5px);font-weight:500;line-height:1}

.figure .lg{list-style:none;padding:0;margin:14px 0 4px;display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:6px 18px;font-size:14px}
.figure .lg b{display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;border-radius:50%;background:var(--accent);color:var(--bg);font-family:var(--f-mono);font-size:11px;font-weight:500;margin-right:8px}
:root[data-theme="dark"] .art img{filter:invert(1);mix-blend-mode:screen}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .art img{filter:invert(1);mix-blend-mode:screen}}
/* shell */
.shell{display:grid;grid-template-columns:var(--side) minmax(0,1fr);min-height:calc(100vh - 61px)}
.side{border-right:1px solid var(--line);padding:22px 18px 40px max(18px, env(safe-area-inset-left, 0px));position:sticky;top:calc(env(safe-area-inset-top, 0px) + 61px);height:calc(100vh - 61px);overflow-y:auto}
.side h4{margin:22px 0 6px;font-family:var(--f-mono);font-weight:500;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2)}
.side h4:first-child{margin-top:0}
.side ul{list-style:none;margin:0;padding:0}
.side li > button,.side li > a,.side li > span{display:flex;justify-content:space-between;align-items:center;width:100%;text-align:left;background:none;border:0;padding:5px 10px;border-radius:6px;font-size:14.5px;cursor:pointer}
.side li > span{cursor:default;color:var(--ink-2)}
.side li > span small{font-family:var(--f-mono);font-size:10.5px;letter-spacing:.08em;color:var(--line-2)}
.side li > a:hover,.side li > button:hover{background:var(--surface)}
.side li > a[aria-current="page"],.side li > button[aria-current="page"]{background:var(--surface);font-weight:600}
.side .sub{margin:2px 0 6px 12px;border-left:1px solid var(--line);padding-left:6px}
.side .sub a,.side .sub button{font-size:13.5px;color:var(--ink-2);padding:3px 10px}
.side .sub a[aria-current="true"],.side .sub button[aria-current="true"]{color:var(--accent);font-weight:600}
.side .nores{font-size:13.5px;color:var(--ink-2);padding:6px 10px}

.main{padding:34px max(16px, env(safe-area-inset-right, 0px)) 80px clamp(16px,3.5vw,48px);min-width:0}
.chapter{display:grid;grid-template-columns:minmax(0,1fr) var(--rail);grid-template-areas:"head rail" "nav rail" "body rail";column-gap:40px;max-width:1240px}
.c-head{grid-area:head;display:flex;flex-direction:column;gap:10px;padding-bottom:20px}
.c-head h1{font-family:var(--f-display);font-size:clamp(52px,7vw,84px);line-height:.95;letter-spacing:-.01em}
.c-head .lede{font-size:17.5px;line-height:1.5;max-width:60ch}
.c-meta{display:flex;flex-wrap:wrap;gap:6px 18px;font-family:var(--f-mono);font-size:12px;color:var(--ink-2)}
.c-nav{grid-area:nav;display:flex;gap:24px;overflow-x:auto;scrollbar-width:none;border-bottom:1px solid var(--line);margin-bottom:30px}
.c-nav::-webkit-scrollbar{display:none}
.c-nav a,.c-nav button{background:none;border:0;border-bottom:2px solid transparent;padding:10px 0;font-size:14.5px;white-space:nowrap;cursor:pointer;color:var(--ink-2)}
.c-nav a[aria-current="true"],.c-nav button[aria-current="true"]{color:var(--ink);border-bottom-color:var(--ink)}
.c-body{grid-area:body;min-width:0}
.rail{grid-area:rail;align-self:start;position:sticky;top:calc(env(safe-area-inset-top, 0px) + 84px);display:flex;flex-direction:column;gap:16px;padding-top:4px}
.rail .panel{background:var(--surface);border-radius:10px;padding:16px}
.rail h5{margin:0 0 10px;font-family:var(--f-mono);font-weight:500;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2)}
.kn{display:grid;grid-template-columns:1fr auto auto;gap:6px 12px;font-size:13.5px;align-items:baseline}
.kn .n{font-family:var(--f-mono);font-size:12.5px;text-align:right;font-variant-numeric:tabular-nums}
.kn .h{font-family:var(--f-mono);font-size:10.5px;letter-spacing:.1em;color:var(--ink-2);text-align:right}
@media (max-width:1240px){
  .chapter{grid-template-columns:minmax(0,1fr);grid-template-areas:"head" "rail" "nav" "body"}
  .rail{position:static;flex-direction:row;flex-wrap:wrap;padding:0 0 24px}
  .rail .panel{flex:1 1 260px}
}


html{scroll-behavior:smooth}
.c-body{display:flex;flex-direction:column;gap:0}
.c-body > .page{scroll-margin-top:calc(env(safe-area-inset-top, 0px) + 116px);padding:44px 0 56px;border-top:1px solid var(--line)}
.c-body > .page:first-child{border-top:0;padding-top:4px}
.c-nav{position:sticky;top:calc(env(safe-area-inset-top, 0px) + 61px);z-index:15;background:var(--bg);margin-bottom:6px}
.totop{position:fixed;right:calc(16px + env(safe-area-inset-right, 0px));bottom:calc(16px + env(safe-area-inset-bottom, 0px));z-index:18;background:var(--ink);color:var(--bg);border:0;border-radius:999px;padding:9px 14px;font-family:var(--f-mono);font-size:12px;letter-spacing:.08em;cursor:pointer;box-shadow:0 2px 8px rgba(0,0,0,.15)}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}}


/* placeholders for drawings */
.ph{aspect-ratio:3/2;max-width:100%;border:1px dashed var(--line-2);border-radius:6px;background:var(--surface);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;padding:12px 14px;text-align:center;font-family:var(--f-mono);font-size:11px;line-height:1.45;color:var(--ink-2)}
.ph b{font-weight:500;font-size:9.5px;letter-spacing:.16em;color:var(--accent)}
.ph.hero{aspect-ratio:16/7;font-size:12px}
.figure .ph{border-color:var(--line-2);background:var(--bg)}
.phead.norule{grid-template-columns:minmax(0,1fr)}
.golink{align-self:flex-start;background:none;border:0;padding:0;color:var(--accent);font-weight:600;font-size:14px;cursor:pointer;text-decoration:underline;text-underline-offset:3px}
.tblwrap{display:flex;flex-direction:column;gap:10px}
.tbl table td:first-child{font-weight:500}

/* page = spread */
.page{display:flex;flex-direction:column;gap:30px}
[hidden]{display:none!important}
.page[hidden]{display:none!important}
.phead{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:28px;align-items:start}
.phead h2{font-family:var(--f-display);font-size:clamp(34px,4.4vw,46px);line-height:1.05}
.phead p{margin-top:10px;max-width:62ch;color:var(--ink-2)}
.rule{border:1px dashed var(--line-2);border-radius:4px;padding:14px 16px;font-family:var(--f-display);font-style:italic;font-size:21px;line-height:1.25;text-align:center}
@media (max-width:760px){.phead{grid-template-columns:1fr}.rule{text-align:left}}
.lbl{font-family:var(--f-mono);font-weight:500;font-size:11.5px;letter-spacing:.14em;text-transform:uppercase}

.spread{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,240px),1fr));border-top:1px solid var(--line);border-left:1px solid var(--line)}
.spread.c2{grid-template-columns:repeat(auto-fill,minmax(min(100%,340px),1fr))}
.cell{border-right:1px solid var(--line);border-bottom:1px solid var(--line);padding:16px 18px 18px;display:flex;flex-direction:column;gap:10px;min-width:0}
.cell[hidden]{display:none!important}
.cell h3{font-family:var(--f-mono);font-weight:500;font-size:12.5px;letter-spacing:.14em;text-transform:uppercase}
.cell .sub{font-size:13.5px;color:var(--ink-2);margin-top:-6px}
.cell ul{margin:0;padding-left:16px;font-size:14px;line-height:1.45}
.cell li{margin:1px 0}
.kim{margin-top:auto;border-top:1px dashed var(--line-2);padding-top:9px;font-size:13.5px;line-height:1.45;color:var(--ink-2)}
.kim b{display:block;font-family:var(--f-mono);font-weight:500;font-size:10.5px;letter-spacing:.14em;color:var(--ink);margin-bottom:2px}
.kim.fix b{color:var(--accent)}
.tags{display:flex;flex-wrap:wrap;gap:6px}
.tags span{font-family:var(--f-mono);font-size:10.5px;letter-spacing:.08em;color:var(--ink-2);border:1px solid var(--line);border-radius:4px;padding:0 6px}
.neq{display:flex;flex-direction:column;justify-content:center;gap:8px;background:var(--surface)}
.neq .big{font-family:var(--f-display);font-size:30px;line-height:1.05}
@media (min-width:900px){.cell.w2{grid-column:span 2}}

.strip{border:1px dashed var(--line-2);border-radius:4px;padding:16px 20px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:16px 30px;align-items:center}
.strip ul{list-style:none;margin:8px 0 0;padding:0;columns:2 260px;column-gap:28px;font-size:14px}
.strip li{padding:3px 0;break-inside:avoid}
.strip li::before{content:"☐  ";color:var(--ink-2)}
.strip ul.check li::before{content:none}
.strip .end{font-family:var(--f-display);font-style:italic;font-size:22px;line-height:1.2;max-width:16ch;text-align:center}
@media (max-width:760px){.strip{grid-template-columns:1fr}.strip .end{text-align:left}}

.figure{background:var(--surface);border-radius:12px;padding:clamp(12px,2.5vw,28px);display:flex;flex-direction:column;gap:10px;margin:0}
.cap{font-family:var(--f-mono);font-size:11.5px;letter-spacing:.06em;color:var(--ink-2)}
.only-wide{display:block} .only-narrow{display:none}
@media (max-width:760px){.only-wide{display:none}.only-narrow{display:block}}

/* drawings */
.dw{width:100%;height:auto;display:block}
.cell .dw{max-height:170px}
.dw.ill{aspect-ratio:3/2;max-height:none;margin:2px 0 4px}
.figure .dw.ill.hero{aspect-ratio:12/5}
.dw .st{fill:none;stroke:var(--ink);stroke-width:1.15;stroke-linecap:round;stroke-linejoin:round}
.dw .gh{fill:none;stroke:var(--ink);stroke-width:.7;opacity:.3;transform:translate(.9px,.6px);stroke-linecap:round}
.dw .heavy{stroke-width:2.3}
.dw .dash{stroke-dasharray:5 4}
.dw .dot{stroke-dasharray:1.5 3.5}
.dw .cons{stroke:var(--line-2);stroke-width:.6}
.dw .gh.cons,.dw .gh.dm,.dw .gh.dash,.dw .gh.dot{display:none}
.dw .dm{stroke:var(--ink-2);stroke-width:.75}
.dw .ac{stroke:var(--accent)}
.dw .wr{stroke:var(--warn)}
.dw .st.fs{fill:var(--surface)}
.dw .st.fb{fill:var(--bg)}
.dw .hl{stroke:var(--line-2);stroke-width:.7}
.dw .zone{fill:var(--line);stroke:none}
.dw text.lb,.dw text{stroke:none}
.dw .lb{font-family:var(--f-mono);font-size:11px;letter-spacing:.04em;fill:var(--ink-2)}
.dw .lb.ink{fill:var(--ink)}
.dw .lb.ac{fill:var(--accent)}
.dw .lb.wr{fill:var(--warn)}
.dw .lb.t{font-size:13px;font-weight:500;fill:var(--ink);letter-spacing:.08em}
.dw .lb.d{font-family:var(--f-body);font-size:13px;letter-spacing:0}
.dw .ld{stroke:var(--line-2);stroke-width:.8;fill:none}
.dw .ld.on{stroke:var(--accent);stroke-width:1.6}
.dw .dotp{fill:var(--ink-2)}
.dw .mk{cursor:pointer}
.dw .mk circle{fill:var(--bg);stroke:var(--ink);stroke-width:1}
.dw .mk text{font-family:var(--f-mono);font-size:14px;fill:var(--ink);text-anchor:middle;dominant-baseline:central}
.dw .mk.on circle{fill:var(--accent);stroke:var(--accent)}
.dw .mk.on text{fill:var(--bg)}
.only-code .zg{display:none}
.only-good .zc{display:none}

/* legend (narrow anatomy) */
.legend{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,280px),1fr));column-gap:24px}
.legend > *{display:grid;grid-template-columns:28px minmax(0,1fr);gap:8px;align-items:baseline;padding:8px 6px;border:0;border-bottom:1px solid var(--line);background:none;text-align:left;font-size:14px;line-height:1.4;cursor:pointer}
.legend > div{cursor:default}
.legend > .on{background:var(--surface)}
.legend .i{font-family:var(--f-mono);font-size:12px;color:var(--ink-2)}
.legend b{font-weight:600;display:block}
.legend span span{color:var(--ink-2)}

/* controls */
.ctl{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px}
.ctl .lab{font-family:var(--f-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2);margin-right:4px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{background:none;border:1px solid var(--line-2);border-radius:999px;padding:4px 13px;font-size:13.5px;cursor:pointer}
.chip[aria-pressed="true"]{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.seg{display:inline-flex;background:var(--surface);border-radius:8px;padding:3px;gap:2px}
.seg button{background:none;border:0;border-radius:6px;padding:5px 12px;font-size:13.5px;cursor:pointer;color:var(--ink-2)}
.seg button[aria-pressed="true"]{background:var(--bg);color:var(--ink);box-shadow:0 1px 2px rgba(0,0,0,.08)}

/* lifespan */
.lr{display:grid;grid-template-columns:150px minmax(0,1fr) 130px;gap:12px;align-items:center;padding:7px 0;border-bottom:1px solid var(--line);font-size:13.5px}
.tr{position:relative;height:10px;background:linear-gradient(to right,var(--line) 1px,transparent 1px) 0 0/33.333% 100%}
.bar{position:absolute;top:2px;height:6px;border-radius:3px;background:var(--ink)}
.lr .r{font-family:var(--f-mono);font-size:12px;color:var(--ink-2)}
.scale{display:flex;justify-content:space-between;font-family:var(--f-mono);font-size:10.5px;color:var(--ink-2)}
@media (max-width:640px){.lr{grid-template-columns:1fr;gap:4px}.lr.hd{display:none}}
.cost{display:grid;grid-template-columns:1fr auto;gap:2px 10px;font-family:var(--f-mono);font-size:12px;border-top:1px dashed var(--line-2);padding-top:9px;margin-top:auto}

ol.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,120px),1fr));counter-reset:s}
ol.steps li{counter-increment:s;border-top:2px solid var(--ink);padding:8px 12px 0 0;font-size:14px}
ol.steps li::before{content:counter(s,decimal-leading-zero) "  →";display:block;font-family:var(--f-mono);font-size:11px;color:var(--ink-2);margin-bottom:2px}

.check{list-style:none;margin:8px 0 0;padding:0;columns:2 280px;column-gap:28px}
.check li{display:flex;gap:10px;align-items:flex-start;padding:5px 0;font-size:14px;break-inside:avoid}
.check input{width:17px;height:17px;margin-top:3px;accent-color:var(--accent);flex:0 0 auto}
.src{font-family:var(--f-mono);font-size:11px;color:var(--ink-2);line-height:1.6}

/* index */
.idx-head{display:flex;flex-direction:column;gap:10px;max-width:760px;margin-bottom:24px}
.idx-head h1{font-family:var(--f-display);font-size:clamp(46px,6.5vw,80px);line-height:.95}
.tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,190px),1fr));gap:18px;max-width:1160px}
.tile{display:flex;flex-direction:column;gap:8px;text-align:left;background:none;border:0;padding:0;cursor:pointer}
.tile[disabled]{cursor:default}
.tile .art{background:var(--surface);border-radius:12px;padding:14px;aspect-ratio:4/3;display:flex;align-items:center;justify-content:center;transition:transform .2s}
.tile:not([disabled]):hover .art{transform:translateY(-2px)}
.tile[disabled] .art{opacity:.55}
.tile .nm{font-family:var(--f-display);font-size:22px;line-height:1}
.tile .st2{font-family:var(--f-mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2)}
.tile:not([disabled]) .st2{color:var(--accent)}
.idx-group{font-family:var(--f-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2);margin:30px 0 14px;max-width:1160px;border-top:1px solid var(--line);padding-top:12px}

.scrim{display:none}
@media (max-width:900px){
  .shell{grid-template-columns:minmax(0,1fr)}
  .menu{display:inline-block}
  .checked{display:none}
  .side{position:fixed;z-index:40;top:0;left:0;bottom:0;width:min(300px,86vw);height:100%;background:var(--bg);transform:translateX(-102%);transition:transform .25s;padding-top:calc(env(safe-area-inset-top, 0px) + 22px)}
  body.nav-open .side{transform:none}
  body.nav-open .scrim{display:block;position:fixed;inset:0;z-index:35;background:rgba(0,0,0,.35)}
  .main{padding-left:max(16px, env(safe-area-inset-left, 0px))}
  .search{width:auto;flex:1;max-width:240px}
}
@media (prefers-reduced-motion: reduce){*{transition:none!important}}

/* ---- static site additions ---- */
a{color:inherit;text-decoration:none}
a.golink{display:inline-block}
a.tile{color:inherit}
.tile .art.pi{padding:8px;background:#fff;border:1px solid var(--line);display:block;overflow:hidden}
.tile .art.pi img{width:100%;height:100%;min-height:0;object-fit:contain;display:block}
.tile:hover .art.pi{border-color:var(--ink)}
.tile.is-fr .st2{color:var(--accent)}
html{scroll-padding-top:calc(env(safe-area-inset-top, 0px) + 116px)}
.foot{margin:72px 0 24px;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:8px 20px;font-family:var(--f-mono);font-size:11.5px;letter-spacing:.06em;color:var(--ink-2)}
.foot a{color:var(--ink-2);text-decoration:underline;text-underline-offset:3px}
.foot a:hover{color:var(--ink)}
.prose{max-width:68ch;padding:8px 0 40px}
.prose h1{font-family:var(--f-display);font-weight:400;font-size:clamp(40px,6vw,64px);line-height:1;margin:10px 0 18px}
.prose h2{font-family:var(--f-display);font-weight:400;font-size:32px;line-height:1.1;margin:44px 0 10px}
.prose p,.prose li{font-size:16.5px;line-height:1.6}
.prose a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.prose .cite{text-decoration:none}

/* ---- buttons, tags, header CTA ---- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 18px;border-radius:8px;border:1px solid var(--line-2);background:var(--bg);color:var(--ink);font-size:15px;font-weight:500;line-height:1.2;cursor:pointer;transition:background .15s,border-color .15s}
.btn:hover{border-color:var(--ink)}
.btn.acc{background:var(--accent);border-color:var(--accent);color:var(--bg)}
.btn.acc:hover{filter:brightness(1.08)}
.cta{font-size:13.5px;font-weight:500;padding:7px 12px;border-radius:8px;background:var(--accent);color:var(--bg);white-space:nowrap}
.cta:hover{filter:brightness(1.08)}
.tg{display:inline-block;margin-left:6px;padding:1px 6px;border-radius:999px;border:1px solid var(--accent);color:var(--accent);font-family:var(--f-mono);font-size:9.5px;letter-spacing:.1em;text-transform:uppercase;vertical-align:2px;line-height:1.5}
.fine{font-size:13px;color:var(--ink-2)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
@media (max-width:640px){.top .cta{display:none}.lp-top .cta{display:inline-block}}

/* ---- locked chapter preview ---- */
.tease{position:relative;max-height:340px;overflow:hidden;pointer-events:none;user-select:none;margin-top:28px}
.tease::after{content:"";position:absolute;inset:auto 0 0 0;height:220px;background:linear-gradient(to bottom,transparent,var(--bg))}
.unlock{padding-top:8px}
.lock-card{max-width:720px;margin:0 auto;border:1px solid var(--line);border-radius:14px;padding:clamp(22px,4vw,40px);background:var(--surface);text-align:left}
.lock-card h2{font-family:var(--f-display);font-size:clamp(32px,4.5vw,44px);line-height:1.05;margin:8px 0 10px}
.lock-card > p{font-size:16.5px;line-height:1.55;max-width:56ch}
.lock-list{list-style:none;margin:22px 0;padding:0;border-top:1px solid var(--line)}
.lock-list li{display:grid;grid-template-columns:56px 1fr auto;gap:12px;align-items:baseline;padding:11px 0;border-bottom:1px solid var(--line)}
.lock-list .ln{font-family:var(--f-mono);font-size:12px;color:var(--ink-2)}
.lock-list .lh{font-size:15.5px}
.lock-list .lc{font-family:var(--f-mono);font-size:11.5px;color:var(--ink-2);white-space:nowrap}
.lock-list .lh::before{content:"";display:inline-block;width:9px;height:10px;margin-right:9px;vertical-align:-1px;background:currentColor;opacity:.45;-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 9 10'%3E%3Cpath d='M2 4V3a2.5 2.5 0 0 1 5 0v1h1v6H1V4zm1 0h3V3a1.5 1.5 0 0 0-3 0z'/%3E%3C/svg%3E") no-repeat center/contain;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 9 10'%3E%3Cpath d='M2 4V3a2.5 2.5 0 0 1 5 0v1h1v6H1V4zm1 0h3V3a1.5 1.5 0 0 0-3 0z'/%3E%3C/svg%3E") no-repeat center/contain}
.lock-cta{display:flex;flex-wrap:wrap;gap:10px;margin:6px 0 12px}
a.lk{color:var(--ink-2)}

/* ---- landing ---- */
.lp-top .top-in{max-width:1240px;margin:0 auto}
.lp-nav{display:flex;gap:22px;margin-left:auto;font-size:14.5px}
.lp-nav a{color:var(--ink-2)}
.lp-nav a:hover{color:var(--ink)}
.lp{max-width:1240px;margin:0 auto;padding:0 max(20px, env(safe-area-inset-right, 0px)) 40px max(20px, env(safe-area-inset-left, 0px))}
.lp h2{font-family:var(--f-display);font-size:clamp(34px,4.6vw,52px);line-height:1.02;margin:10px 0 14px}
.lp-head{max-width:640px;margin-bottom:32px}
.lp-head p,.lp-split p{font-size:17px;line-height:1.55;color:var(--ink-2)}
.lp-split p + p{margin-top:12px}
.lp-sec{padding:84px 0 0}
.lp-hero{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(24px,4vw,56px);align-items:center;padding:clamp(40px,7vw,88px) 0 40px}
.lp-hero h1{font-family:var(--f-display);font-size:clamp(52px,8vw,104px);line-height:.95;letter-spacing:-.01em;margin:16px 0 22px}
.lp-hero h1 i{color:var(--accent)}
.lp-sub{font-size:18.5px;line-height:1.5;max-width:44ch}
.lp-actions{display:flex;flex-wrap:wrap;gap:10px;margin:28px 0 14px}
.lp-hero-art{margin:0}
.lp-hero-art img{width:100%}
.lp-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.lp-stats div{padding:22px 18px;border-left:1px solid var(--line);display:flex;flex-direction:column;gap:4px}
.lp-stats div:first-child{border-left:0;padding-left:0}
.lp-stats b{font-family:var(--f-display);font-weight:400;font-size:clamp(30px,3.6vw,42px);line-height:1}
.lp-stats span{font-family:var(--f-mono);font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-2)}
.lp-split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(24px,5vw,72px);align-items:center;padding:88px 0 0}
.lp-rail .rail{position:static;width:auto;max-width:440px;margin-left:auto}
.lp-rail .panel{padding:22px}
.lp-gallery{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.lp-g{display:block;background:var(--surface);border-radius:12px;padding:16px 16px 12px;transition:transform .2s}
.lp-g:hover{transform:translateY(-2px)}
.lp-g img{aspect-ratio:3/2;object-fit:contain}
.lp-g span{display:block;margin-top:8px;font-family:var(--f-mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-2)}
.lp-frees{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.lp-free{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:border-color .15s}
.lp-free:hover{border-color:var(--ink)}
.lp-free .art{background:var(--surface);padding:16px}
.lp-free .art img{aspect-ratio:3/2;object-fit:contain}
.lp-free-t{padding:18px 18px 20px;display:flex;flex-direction:column;gap:6px;flex:1}
.lp-free-t h3{font-family:var(--f-display);font-size:30px;line-height:1.05}
.lp-free-t p{font-size:14.5px;line-height:1.5;color:var(--ink-2);flex:1}
.lp-more{margin-top:8px;font-size:14px;font-weight:500;color:var(--accent)}
.lp-groups{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:28px 32px}
.lp-group h4{font-family:var(--f-mono);font-weight:400;font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2);margin:0 0 10px;padding-bottom:8px;border-bottom:1px solid var(--line)}
.lp-group ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:7px;font-size:15px}
.lp-group a:hover{color:var(--accent)}
.lp-plans{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;align-items:stretch}
.plan{position:relative;display:flex;flex-direction:column;gap:14px;border:1px solid var(--line);border-radius:14px;padding:26px 24px}
.plan.feat{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}
.plan h3{font-family:var(--f-mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2)}
.plan .price{font-family:var(--f-display);font-size:52px;line-height:1}
.plan .price s{font-size:28px;color:var(--ink-2);margin-right:4px}
.plan .price small{font-family:var(--f-body);font-size:13.5px;color:var(--ink-2);margin-left:8px}
.plan ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:9px;font-size:15px;flex:1}
.plan li{padding-left:20px;position:relative;line-height:1.45}
.plan li::before{content:"";position:absolute;left:2px;top:.55em;width:9px;height:5px;border-left:1.6px solid var(--accent);border-bottom:1.6px solid var(--accent);transform:rotate(-45deg)}
.plan .btn{width:100%}
.plan .fine{text-align:center;margin-top:-4px}
.badge{position:absolute;top:-11px;left:22px;background:var(--accent);color:var(--bg);font-family:var(--f-mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;padding:3px 9px;border-radius:999px}
.badge.soft{background:var(--surface);color:var(--ink-2);border:1px solid var(--line)}
.lp-note{max-width:780px;margin:96px auto 0;text-align:center}
.lp-note blockquote{margin:18px 0 0;font-family:var(--f-display);font-size:clamp(24px,3vw,32px);line-height:1.3}
.lp-note blockquote p + p{margin-top:14px}
.lp-note .sig{margin-top:22px;font-family:var(--f-mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase}
.lp-note .sig span{color:var(--ink-2)}
.lp-faq details{max-width:760px;border-top:1px solid var(--line);padding:16px 0}
.lp-faq details:last-child{border-bottom:1px solid var(--line)}
.lp-faq summary{cursor:pointer;font-size:17px;font-weight:500;list-style:none;display:flex;justify-content:space-between;gap:16px}
.lp-faq summary::after{content:"+";font-family:var(--f-mono);color:var(--ink-2)}
.lp-faq details[open] summary::after{content:"–"}
.lp-faq summary::-webkit-details-marker{display:none}
.lp-faq details p{margin-top:10px;font-size:15.5px;line-height:1.55;color:var(--ink-2);max-width:62ch}
.lp-list{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(20px,4vw,56px);align-items:center;margin-top:96px;background:var(--surface);border-radius:16px;padding:clamp(24px,4vw,48px)}
.lp-list h2{font-size:clamp(30px,3.6vw,42px)}
.lp-list p{color:var(--ink-2);font-size:16px}
.lp-form{display:flex;flex-wrap:wrap;gap:10px}
.lp-form input{flex:1 1 220px;min-width:0;padding:11px 14px;border-radius:8px;border:1px solid var(--line-2);background:var(--bg);color:var(--ink);font:inherit;font-size:15px}
.lp-form .fine{flex-basis:100%}
.cell{position:relative}
.bl-add{position:absolute;top:10px;right:10px;width:28px;height:28px;border-radius:7px;border:1px solid var(--line);background:var(--bg);cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:.55;transition:opacity .15s,border-color .15s,background .15s;z-index:2}
.bl-add::before{content:'';width:10px;height:13px;background:currentColor;color:var(--ink-2);-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 10 13'%3E%3Cpath d='M1 1h8v11L5 9 1 12z' fill='none' stroke='black' stroke-width='1.6' stroke-linejoin='round'/%3E%3C/svg%3E") center/contain no-repeat;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 10 13'%3E%3Cpath d='M1 1h8v11L5 9 1 12z' fill='none' stroke='black' stroke-width='1.6' stroke-linejoin='round'/%3E%3C/svg%3E") center/contain no-repeat}
.cell:hover .bl-add,.bl-add:focus-visible{opacity:1}
.bl-add:hover{border-color:var(--ink)}
.bl-add[aria-pressed="true"]{opacity:1;background:var(--accent);border-color:var(--accent)}
.bl-add[aria-pressed="true"]::before{color:var(--bg);-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 10 13'%3E%3Cpath d='M1 1h8v11L5 9 1 12z' fill='black' stroke='black' stroke-width='1.6' stroke-linejoin='round'/%3E%3C/svg%3E") center/contain no-repeat;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 10 13'%3E%3Cpath d='M1 1h8v11L5 9 1 12z' fill='black' stroke='black' stroke-width='1.6' stroke-linejoin='round'/%3E%3C/svg%3E") center/contain no-repeat}
.cell h3,.cell .db{padding-right:34px}
.bl-link{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border:1px solid var(--line);border-radius:999px;color:var(--ink);text-decoration:none;font:500 12px var(--f-mono);margin-right:8px;white-space:nowrap}
.bl-link:hover{border-color:var(--ink)}
.bl-link[hidden]{display:none}
.bl-ico{width:9px;height:12px;background:var(--accent);-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 10 13'%3E%3Cpath d='M1 1h8v11L5 9 1 12z' fill='black'/%3E%3C/svg%3E") center/contain no-repeat;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 10 13'%3E%3Cpath d='M1 1h8v11L5 9 1 12z' fill='black'/%3E%3C/svg%3E") center/contain no-repeat}
.toast a{color:inherit;text-decoration:underline;margin-left:8px}
/* build list page */
.bl{max-width:980px;margin:0 auto;padding:40px 24px 80px}
.bl-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:18px;border-bottom:1px solid var(--ink);padding-bottom:18px}
.bl-head h1{font-family:var(--f-display);font-weight:400;font-size:clamp(38px,5vw,56px);line-height:1;margin:6px 0 0}
.bl-proj{font:inherit;font-size:16px;border:0;border-bottom:1px dashed var(--line-2);background:none;color:var(--ink);padding:4px 0;margin-top:10px;min-width:min(100%,360px)}
.bl-proj:focus{outline:none;border-bottom-color:var(--accent)}
.bl-tools{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.bl-seg{display:inline-flex;border:1px solid var(--line-2);border-radius:8px;overflow:hidden}
.bl-seg button{font:500 12px var(--f-mono);letter-spacing:.06em;padding:8px 12px;border:0;background:none;color:var(--ink-2);cursor:pointer}
.bl-seg button[aria-pressed="true"]{background:var(--ink);color:var(--bg)}
.bl-sum{font:12px var(--f-mono);color:var(--ink-2);letter-spacing:.06em;margin:16px 0 0}
.bl-grp h2{font-family:var(--f-display);font-weight:400;font-size:28px;margin:34px 0 4px;display:flex;justify-content:space-between;align-items:baseline;gap:12px}
.bl-grp h2 small{font:12px var(--f-mono);color:var(--ink-2);letter-spacing:.08em;text-transform:uppercase}
.bl-grp > p{margin:0 0 10px;color:var(--ink-2);font-size:14px}
.bl-it{display:grid;grid-template-columns:24px minmax(0,1fr) auto;gap:4px 14px;padding:14px 0;border-top:1px solid var(--line)}
.bl-it input[type=checkbox]{width:18px;height:18px;margin:2px 0 0;accent-color:var(--accent)}
.bl-it .t{font:500 12.5px var(--f-mono);letter-spacing:.12em;text-transform:uppercase}
.bl-it .t a{color:inherit;text-decoration:none}
.bl-it .t a:hover{text-decoration:underline}
.bl-it .m{font:11px var(--f-mono);color:var(--ink-2);letter-spacing:.06em;margin-top:3px}
.bl-it ul{margin:8px 0 0;padding-left:18px;font-size:14.5px;line-height:1.5;color:var(--ink)}
.bl-it textarea{grid-column:2/4;font:inherit;font-size:14px;border:1px solid var(--line);border-radius:8px;padding:8px 10px;background:var(--bg);color:var(--ink);resize:vertical;min-height:38px}
.bl-it.done .t,.bl-it.done ul{opacity:.45;text-decoration:line-through}
.bl-rm{background:none;border:0;color:var(--ink-2);font:12px var(--f-mono);cursor:pointer;padding:2px 0;align-self:start}
.bl-rm:hover{color:#9b2c2c}
.bl-empty{text-align:center;padding:70px 20px;color:var(--ink-2)}
.bl-empty h2{font-family:var(--f-display);font-weight:400;font-size:32px;color:var(--ink);margin:0 0 10px}
.bl-print-h{display:none}
@media print{
  .top,.side,.ft,.lp-top,.lp-head,header,footer,.bl-tools,.bl-rm,.toast,.lp-sticky,.bl-local{display:none!important}
  .bl{padding:0;max-width:none}
  .bl-it{break-inside:avoid;padding:8px 0}
  .bl-it textarea{border:0;padding:0;min-height:0;resize:none}
  .bl-it textarea:placeholder-shown{display:none}
  .bl-proj{border:0}
  .bl-print-h{display:block;font:10px var(--f-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2);margin-bottom:6px}
}

/* library: other ways in */
.idx-alt{display:flex;gap:20px;flex-wrap:wrap;font:500 12.5px var(--f-mono);letter-spacing:.06em;margin:2px 0 0}
.idx-alt a{color:var(--accent);text-decoration:none}
.idx-alt a:hover{text-decoration:underline}
/* by phase */
.byph{max-width:1160px;margin:0 auto;padding:40px 24px 80px}
.ph-head{border-bottom:1px solid var(--ink);padding-bottom:22px}
.ph-head h1{font-family:var(--f-display);font-weight:400;font-size:clamp(40px,6vw,72px);line-height:.98;margin:8px 0 12px}
.ph-head h1 i{color:var(--accent)}
.ph-lede{max-width:62ch;color:var(--ink-2);font-size:17px;margin:0 0 18px}
.ph-jump{display:flex;flex-wrap:wrap;gap:8px}
.ph-jump a{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border:1px solid var(--line-2);border-radius:999px;color:var(--ink);text-decoration:none;font:500 12px var(--f-mono);letter-spacing:.04em}
.ph-jump a span{color:var(--ink-2)}
.ph-jump a b{font-weight:500;color:var(--accent)}
.ph-jump a:hover{border-color:var(--ink)}
.ph-st{padding-top:46px;scroll-margin-top:70px}
.ph-sh{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:18px;align-items:baseline;border-bottom:1px solid var(--line);padding-bottom:12px}
.ph-n{font:400 44px/1 var(--f-display);color:var(--accent)}
.ph-sh h2{font-family:var(--f-display);font-weight:400;font-size:clamp(30px,4vw,40px);margin:0 0 4px;line-height:1}
.ph-sh p{margin:0;color:var(--ink-2);font-size:15px;max-width:64ch}
.ph-sh small{font:12px var(--f-mono);color:var(--ink-2);letter-spacing:.08em;text-transform:uppercase;white-space:nowrap}
.ph-ch{margin-top:24px}
.ph-cht{font:500 12px var(--f-mono);letter-spacing:.12em;text-transform:uppercase;margin:0 0 10px;display:flex;gap:10px;align-items:center}
.ph-cht a{color:var(--ink);text-decoration:none}
.ph-cht a:hover{text-decoration:underline}
.ph-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px;align-items:start}
.cell.ph-c{border:1px solid var(--line);border-radius:10px;padding:14px 14px 12px;background:var(--bg);display:flex;flex-direction:column;gap:4px;margin:0;min-width:0}
.ph-img{display:block;margin:0 0 8px;aspect-ratio:4/3;overflow:hidden;border-radius:6px}
.ph-img img{width:100%;height:100%;object-fit:contain}
.ph-c h3{font:500 12.5px var(--f-mono);letter-spacing:.12em;text-transform:uppercase;margin:0;line-height:1.35}
.ph-c h3 a{color:var(--ink);text-decoration:none}
.ph-c h3 a:hover{text-decoration:underline}
.ph-m{font:11px var(--f-mono);color:var(--ink-2);letter-spacing:.04em}
.ph-c ul{margin:6px 0 0;padding-left:16px;font-size:14px;line-height:1.45}
.ph-lock{margin:6px 0 0;font:11px var(--f-mono);color:var(--ink-2);letter-spacing:.06em;text-transform:uppercase}
.ph-end{margin-top:50px;border-top:1px solid var(--ink);padding-top:22px;display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between}
.ph-end p{margin:0;color:var(--ink-2)}
@media (max-width:640px){.ph-sh{grid-template-columns:auto minmax(0,1fr)}.ph-sh small{grid-column:2}.ph-n{font-size:34px}.byph,.bl{padding-left:16px;padding-right:16px}}
/* browse switch: room, phase, project, trade, numbers */
.lens{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin:0 0 26px;padding:6px;border:1px solid var(--line);border-radius:999px;width:fit-content;max-width:100%;background:var(--bg)}
.lens-l{font:500 10.5px var(--f-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2);padding:0 8px 0 10px}
.lens a{font:500 13px var(--f-body);color:var(--ink);text-decoration:none;padding:7px 14px;border-radius:999px;transition:background .15s}
.lens a:hover{background:var(--surface)}
.lens a[aria-current="page"]{background:var(--ink);color:var(--bg)}
.lens a.lens-tool{color:var(--accent);border-left:1px solid var(--line);border-radius:0 999px 999px 0;margin-left:2px}
.idx-head + .lens,.idx-head .lens{margin:6px 0 4px}
@media (max-width:640px){.lens{border-radius:14px;width:auto}.lens-l{flex-basis:100%;padding:4px 8px 2px}.lens a{padding:7px 11px}.lens a.lens-tool{border-left:0;border-radius:999px}}
.ph-head .eyebrow a{color:inherit;text-decoration:underline;text-underline-offset:3px}
.pj-act{margin:0 0 18px}
/* projects */
.pj-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:18px;margin-top:30px}
.pj-t{display:grid;grid-template-rows:auto 1fr;border:1px solid var(--line);border-radius:12px;overflow:hidden;color:var(--ink);text-decoration:none;background:var(--bg);transition:border-color .15s,transform .15s}
.pj-t:hover{border-color:var(--ink);transform:translateY(-2px)}
.pj-t .art{aspect-ratio:16/10;background:var(--surface);display:flex;align-items:center;justify-content:center;overflow:hidden;border-bottom:1px solid var(--line)}
.pj-t .art img{width:100%;height:100%;object-fit:contain;mix-blend-mode:multiply}
.pj-b{padding:18px 20px 20px;display:flex;flex-direction:column;gap:6px}
.pj-b h2{font-family:var(--f-display);font-weight:400;font-size:30px;line-height:1.02;margin:0}
.pj-b p{margin:0;color:var(--ink-2);font-size:14.5px;line-height:1.5}
.pj-b .lp-more{margin-top:auto;padding-top:8px;font:500 12px var(--f-mono);letter-spacing:.08em;color:var(--accent)}
/* trades */
.tr-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:12px;margin-top:30px}
.tr-t{display:flex;flex-direction:column;gap:6px;padding:18px 18px 16px;border:1px solid var(--line);border-radius:12px;color:var(--ink);text-decoration:none;transition:border-color .15s,background .15s}
.tr-t:hover{border-color:var(--ink);background:var(--surface)}
.tr-t b{font-family:var(--f-display);font-weight:400;font-size:26px;line-height:1.05}
.tr-t span{color:var(--ink-2);font-size:14px;line-height:1.45}
.tr-t small{margin-top:auto;padding-top:6px;font:500 11px var(--f-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--accent)}
/* the numbers */
.nm-tools{display:flex;gap:8px;flex-wrap:wrap;max-width:520px}
.nm-tools input{flex:1 1 240px;min-width:0;padding:11px 14px;border-radius:8px;border:1px solid var(--line-2);background:var(--bg);color:var(--ink);font:inherit;font-size:15px}
.nm-g{padding-top:40px}
.nm-g[hidden],.nm-c[hidden]{display:none}
.nm-g > h2{font-family:var(--f-display);font-weight:400;font-size:clamp(30px,4vw,40px);margin:0 0 6px;padding-bottom:10px;border-bottom:1px solid var(--line)}
.nm-cols{columns:2 420px;column-gap:40px}
.nm-c{break-inside:avoid;padding:18px 0 6px}
.nm-c h3{font:500 12px var(--f-mono);letter-spacing:.12em;text-transform:uppercase;margin:0 0 6px}
.nm-c h3 a{color:var(--ink);text-decoration:none}
.nm-c h3 a:hover{text-decoration:underline}
.nm-c table{width:100%;border-collapse:collapse;font-size:14px}
.nm-c th,.nm-c td{text-align:left;padding:7px 8px 7px 0;border-top:1px solid var(--line);vertical-align:top;font-weight:400}
.nm-c thead th{font:500 10px var(--f-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2);border-top:0;padding-bottom:4px}
.nm-c tbody th{width:44%;color:var(--ink)}
.nm-c td{font:13px var(--f-mono);color:var(--ink-2)}
.nm-c td.g{color:var(--accent)}
.nm-note{margin-top:40px}
@media print{.lens,.nm-tools,.ph-end,.pj-act,.bl-add{display:none!important}.nm-cols{columns:2}.nm-c{padding:8px 0 2px}.nm-c table{font-size:10px}.nm-g{padding-top:14px}.byph{padding:0;max-width:none}.ph-img{display:none}.ph-grid{grid-template-columns:repeat(3,1fr)}.cell.ph-c{break-inside:avoid}}
.ac-dl-all details{width:100%}
.ac-dl-all summary{display:flex;justify-content:space-between;align-items:center;gap:12px;cursor:pointer;list-style:none}
.ac-dl-all summary::-webkit-details-marker{display:none}
.ac-dl-ch{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:4px 16px;padding:12px 0 4px}
.ac-dl-ch a{font-size:14px;color:var(--ink);text-decoration:none;padding:5px 0;border-bottom:1px solid var(--line)}
.ac-dl-ch a::after{content:' ↓';color:var(--accent)}
.ac-dl-ch a:hover{color:var(--accent)}
/* sidebar: browse switch, lists, tools, buy card */
:root{--rail:276px}
.side{background:color-mix(in srgb,var(--surface) 45%,var(--bg))}
.sb{display:flex;flex-direction:column;min-height:100%}
.sb-l{font:500 10.5px var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2);padding:0 10px 8px}
.sb-sw{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:2px;padding:3px;border:1px solid var(--line);border-radius:10px;background:var(--bg);margin-bottom:18px}
.sb-sw a{display:block;text-align:center;text-decoration:none;border-radius:7px;padding:7px 0;font:500 12px var(--f-body);letter-spacing:-.01em;color:var(--ink-2);transition:background .15s,color .15s}
.sb-sw a:hover{color:var(--ink);background:var(--surface)}
.sb-sw a.on{background:var(--ink);color:var(--bg)}
.dl-note a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.sb-list[hidden]{display:none}
.sb-in{margin:0 0 10px;padding:0 10px;color:var(--ink-2);font-size:13.5px;line-height:1.45}
.side .sb li > a{justify-content:flex-start;gap:9px;padding:6px 10px;border-radius:8px}
.side .sb li > a > span:not(.sb-n):not(.tg){flex:1;min-width:0}
.side .sb li > a small{font:11px var(--f-mono);color:var(--ink-2);margin-left:auto}
.side .sb li > a .tg{margin-left:auto}
.side .sb li > a[aria-current="page"]{background:color-mix(in srgb,var(--accent) 13%,var(--bg));color:var(--ink);font-weight:500}
.side .sb li > a svg{width:16px;height:16px;flex:none;fill:none;stroke:var(--ink-2);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.sb-n{font:11px var(--f-mono);color:var(--accent);width:20px;flex:none}
.sb-top{margin-bottom:6px!important}
.sb-sub{margin-top:8px!important;padding-top:8px!important;border-top:1px solid var(--line)}
.side .sb .sb-sub li > a{font-size:13.5px;color:var(--accent)}
.sb-tools{margin-top:auto;padding-top:22px}
.sb-tools ul{border-top:1px solid var(--line);padding-top:8px!important}
.sb-tools h4{margin:0 0 8px!important}
.side .sb .sb-tools li > a svg:first-child{stroke:var(--accent)}
.sb-lock{width:13px!important;height:13px!important;margin-left:auto}
.is-member .sb-lock{display:none}
.sb-buy{margin-top:16px;border:1px solid var(--line);border-radius:12px;background:var(--bg);padding:14px}
.sb-buy b{display:block;font:400 21px/1.08 var(--f-display)}
.sb-buy b i{color:var(--accent)}
.sb-buy p{margin:6px 0 12px;color:var(--ink-2);font-size:13px;line-height:1.45}
.sb-buy a{display:block;text-align:center;background:var(--ink);color:var(--bg);text-decoration:none;padding:9px 12px;border-radius:8px;font-size:14px;font-weight:500}
.sb-buy a:hover{background:var(--accent)}
.is-member .sb-buy{display:none}
.main .byph{padding:6px 0 40px;max-width:1120px;margin:0}
@media (max-width:900px){.side-acct{display:none!important}}
/* downloads page */
html:not(.is-member) .dl-in{display:none!important}
.is-member .dl-out{display:none!important}
.dl .btn svg,.dl-a svg,.dl-fc small svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex:none}
.dl .btn{display:inline-flex;align-items:center;gap:8px}
.dl-note{margin:0;padding:12px 14px;border-radius:10px;background:var(--surface);color:var(--ink-2);font-size:14.5px;max-width:62ch}
.dl-feat{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:0;margin-top:30px;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.dl-fi{background:var(--surface);display:flex;align-items:center;justify-content:center;padding:18px;min-height:260px}
.dl-fi img{max-width:100%;max-height:300px;object-fit:contain;mix-blend-mode:multiply}
.dl-fb{padding:28px 30px;display:flex;flex-direction:column;align-items:flex-start;gap:10px}
.dl-fb h2{font-family:var(--f-display);font-weight:400;font-size:38px;line-height:1;margin:0}
.dl-fb p{margin:0 0 6px;color:var(--ink-2);font-size:15.5px;line-height:1.5;max-width:46ch}
.dl-sec{margin-top:44px}
.dl-sh{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:10px;border-bottom:1px solid var(--line);padding-bottom:10px;margin-bottom:6px}
.dl-sh h2{font-family:var(--f-display);font-weight:400;font-size:32px;margin:0}
.dl-sh span{font:12px var(--f-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--ink-2)}
.dl-grid{columns:3 240px;column-gap:36px}
.dl-g{break-inside:avoid;padding-top:16px}
.dl-g h3{font:500 11px var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2);margin:0 0 4px}
.dl-g ul{list-style:none;margin:0;padding:0}
.dl-g li{display:flex;align-items:center;gap:10px;padding:8px 0;border-top:1px solid var(--line)}
.dl-g li:first-child{border-top:0}
.dl-t{flex:1;min-width:0;font-size:15px}
.dl-t small{margin-left:8px;font:11px var(--f-mono);color:var(--ink-2)}
.dl-a{width:34px;height:34px;border-radius:8px;display:flex;align-items:center;justify-content:center;color:var(--ink-2);flex:none}
a.dl-a{color:var(--accent);border:1px solid var(--line)}
a.dl-a:hover{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 10%,var(--bg))}
.dl-free{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px;margin-top:16px}
.dl-fc{display:flex;flex-direction:column;gap:6px;padding:18px;border:1px solid var(--line);border-radius:12px;color:var(--ink);text-decoration:none;transition:border-color .15s,background .15s}
.dl-fc:hover{border-color:var(--ink);background:var(--surface)}
.dl-fc b{font-family:var(--f-display);font-weight:400;font-size:24px;line-height:1.05}
.dl-fc span{color:var(--ink-2);font-size:14px;line-height:1.45}
.dl-fc small{margin-top:auto;padding-top:6px;display:inline-flex;align-items:center;gap:6px;font:500 11px var(--f-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--accent)}
@media (max-width:760px){.dl-feat{grid-template-columns:1fr}.dl-fb{padding:22px}}
.ph-cht small{margin-left:auto;font:11px var(--f-mono);color:var(--ink-2);letter-spacing:.06em}
.ph-pn{margin-top:48px}
/* home: four ways in */
.who a.who-more{font-weight:400;color:var(--ink-2);font-size:14px;margin-top:-2px}
.who a.who-more::before{content:none}
.who a.who-more::after{content:" →"}
.who a.who-more:hover{color:var(--accent)}
.w4-sw{display:inline-grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:3px;padding:4px;border:1px solid var(--line);border-radius:12px;margin:0 0 28px;min-width:min(100%,460px)}
.w4-sw button{border:0;border-radius:9px;padding:10px 16px;background:none;font:500 14.5px var(--f-body);color:var(--ink-2);cursor:pointer;transition:background .15s,color .15s}
.w4-sw button:hover{color:var(--ink);background:var(--surface)}
.w4-sw button[aria-selected="true"]{background:var(--ink);color:var(--bg)}
.w4-p[hidden]{display:none}
.w4-in{font-size:16px;color:var(--ink-2);max-width:62ch;margin:0 0 22px}
.w4-more{display:inline-block;margin-top:26px;font:500 13px var(--f-mono);letter-spacing:.06em;color:var(--accent);text-decoration:none}
.w4-more:hover{text-decoration:underline}
.w4-tl{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));position:relative}
.w4-tl::before{content:"";position:absolute;left:27px;right:calc(20% - 27px);top:27px;height:1px;background:var(--line-2)}
.w4-tl a{position:relative;display:flex;flex-direction:column;gap:6px;padding:0 16px 0 0;color:var(--ink);text-decoration:none}
.w4-n{width:54px;height:54px;border-radius:50%;border:1px solid var(--line-2);background:var(--bg);display:flex;align-items:center;justify-content:center;font:400 24px var(--f-display);color:var(--accent);margin-bottom:8px;transition:background .15s,color .15s}
.w4-tl a:hover .w4-n{background:var(--accent);color:var(--bg);border-color:var(--accent)}
.w4-tl b{font:400 24px/1.05 var(--f-display)}
.w4-tl small{font:11px var(--f-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--ink-2)}
.w4-pj{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:14px}
.w4-pc{display:flex;flex-direction:column;gap:4px;color:var(--ink);text-decoration:none}
.w4-pc .art{display:flex;align-items:center;justify-content:center;aspect-ratio:4/3;border:1px solid var(--line);border-radius:10px;background:var(--surface);overflow:hidden;margin-bottom:8px;transition:border-color .15s}
.w4-pc .art img{width:100%;height:100%;object-fit:contain;mix-blend-mode:multiply}
.w4-pc:hover .art{border-color:var(--ink)}
.w4-pc b{font:400 22px/1.05 var(--f-display)}
.w4-pc small{font:11px var(--f-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--ink-2)}
.w4-tr{display:flex;flex-wrap:wrap;gap:8px}
.w4-tr a{display:inline-flex;align-items:center;gap:10px;padding:10px 16px;border:1px solid var(--line);border-radius:999px;color:var(--ink);text-decoration:none;font-size:15px;transition:border-color .15s,background .15s}
.w4-tr a:hover{border-color:var(--ink);background:var(--surface)}
.w4-tr small{font:11px var(--f-mono);color:var(--accent)}
@media (max-width:760px){.w4-sw{display:grid;width:100%}.w4-sw button{padding:10px 4px;font-size:13.5px}.w4-tl{grid-template-columns:1fr;gap:14px}.w4-tl::before{left:27px;right:auto;top:0;bottom:0;width:1px;height:auto}.w4-tl a{flex-direction:row;align-items:center;gap:14px;flex-wrap:wrap}.w4-n{margin:0;flex:none}.w4-tl b{flex:1}.w4-tl small{flex-basis:100%;padding-left:68px;margin-top:-14px}}
.dm-fig{position:relative;display:block}
.dm-fig img{display:block;width:100%}
.dm-st{position:relative;display:block}
.dm-art .dm-st img{aspect-ratio:auto;display:block;width:100%;transition:opacity .25s}
.dm-st img:not(:first-child){position:absolute;inset:0;height:100%}
.dm-st .ly-c{opacity:.75}
.dm-box[data-v="code"] .ly-c{opacity:1}.dm-box[data-v="code"] .ly-g{opacity:.12}
.dm-box[data-v="good"] .ly-c{opacity:.08}
.dm-cap{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:6px;font:12px var(--f-mono);letter-spacing:.03em;transition:opacity .2s}
.dm-cap > span{display:flex;flex-direction:column;gap:3px;padding:8px 10px 2px;border-top:2px solid var(--ink-2);color:var(--ink-2);transition:opacity .2s}
.dm-cap > span.g{border-top-color:var(--accent);color:var(--accent)}
.dm-cap b{font-weight:500;font-size:10.5px;letter-spacing:.14em;text-transform:uppercase}
.dm-box[data-v="code"] .dm-cap .g,.dm-box[data-v="good"] .dm-cap .c{opacity:.25}
@media (max-width:640px){.dm-cap{font-size:10.5px}.dm-cap > span{padding:6px 4px 0}}
/* home: full-width tinted bands so sections don't run together */
.lp .band{background:var(--surface);box-shadow:0 0 0 100vmax var(--surface);clip-path:inset(0 -100vmax);padding-top:84px;padding-bottom:88px;margin-top:84px}
.lp .band + .lp-sec{padding-top:96px}
.band .art,.band .w4-sw,.band .w4-tr a,.band .who{background:var(--bg)}
.band .w4-tr a:hover{background:var(--bg);border-color:var(--ink)}
.band .w4-sw button:hover{background:var(--surface)}
.band .w4-sw button[aria-selected="true"]{background:var(--ink);color:var(--bg)}
/* the build-list pill belongs to the fieldbook, not the marketing pages */
.lp-top .bl-link{display:none!important}
#auDev a{color:var(--accent);text-decoration:underline;text-underline-offset:3px;font-weight:500}
.ph-note{display:flex;flex-direction:column;gap:4px;max-width:68ch;margin:14px 0 4px;padding:12px 16px;border-left:3px solid var(--ochre,#E3B859);background:color-mix(in srgb,var(--ochre,#E3B859) 16%,transparent);border-radius:0 8px 8px 0;font-size:14.5px;line-height:1.5;color:var(--ink)}
.ph-note b{font-family:var(--f-mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;font-weight:500}
.ph-note a{font-weight:500}
.st-sel,.cp-st select{-webkit-appearance:none;appearance:none;background:var(--bg) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5l5 5 5-5' fill='none' stroke='%2362615C' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") no-repeat right 16px center/12px 8px!important;padding-right:44px!important;cursor:pointer}
.ac-box .st-sel{width:100%;font:inherit;font-size:15px;padding:12px 16px;border:1px solid var(--line-2);border-radius:10px;color:var(--ink);margin:8px 0 6px;transition:border-color .15s}
.ac-box .st-sel:hover{border-color:var(--ink-2)}.ac-box .st-sel:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 18%,transparent)}
.st-out.on{margin-top:14px}
.stc{padding:16px 18px;border:1px solid var(--line);border-radius:12px;background:var(--surface,color-mix(in srgb,var(--ink) 3%,var(--bg)))}
.stc-n{display:flex;flex-wrap:wrap;align-items:center;gap:8px}.stc-n b{font-size:16px;font-weight:500;color:var(--ink)}
.stc-tag{font-family:var(--f-mono);font-size:9.5px;letter-spacing:.1em;text-transform:uppercase;padding:3px 7px;border-radius:999px;border:1px solid var(--line-2);color:var(--ink-2)}
.stc-tag.new{border-color:transparent;background:color-mix(in srgb,var(--accent) 14%,transparent);color:var(--accent)}
.stc-g{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));margin:14px 0 4px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stc-c{display:flex;flex-direction:column;gap:2px;padding:12px 14px 12px 0}.stc-c+.stc-c{padding-left:14px;border-left:1px solid var(--line)}
.stc-l{font-family:var(--f-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2)}
.stc-y{font-family:var(--f-serif,'Instrument Serif',Georgia,serif);font-size:40px;line-height:1;color:var(--accent);letter-spacing:-.01em;margin-top:4px}
.stc-c.none .stc-y{color:var(--ink-2);font-size:30px}
.stc-k{font-size:13px;color:var(--ink-2);margin-top:2px}
.stc-m{margin-top:10px;font-size:13px;color:var(--ink-2)}
.stc p{margin:8px 0 0;font-size:14px;line-height:1.5;color:var(--ink)}.stc p.stc-s{font-size:13px;color:var(--ink-2)}
.stc-f{display:flex;flex-wrap:wrap;gap:6px 16px;margin-top:10px;font-family:var(--f-mono);font-size:11px;letter-spacing:.04em;color:var(--ink-2)}
.stc-f a{color:var(--accent);text-decoration:none}.stc-f a:hover{text-decoration:underline}.stc-hint{flex-basis:100%}
@media (max-width:520px){.stc-y{font-size:30px}.stc-c{padding-right:8px}.stc-c+.stc-c{padding-left:10px}.stc-hint{margin-left:0}}
.cite.c24{position:relative}
.cite.c24::after{content:"";position:absolute;top:-2px;right:-2px;width:6px;height:6px;border-radius:50%;background:var(--ochre,#E3B859);box-shadow:0 0 0 1.5px var(--bg)}
.cp-24{margin:10px 0 0;padding:8px 10px;border-radius:6px;background:color-mix(in srgb,var(--ochre,#E3B859) 18%,transparent);font-size:13px;line-height:1.45}
.cp-24 b{display:block;font-family:var(--f-mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;font-weight:500;margin-bottom:2px}
.cp-st{margin:10px 0 0;padding-top:10px;border-top:1px solid var(--line);font-size:13px;line-height:1.45;color:var(--ink-2)}
.cp-st b{color:var(--ink);font-weight:500}
.cp-st select{display:block;width:100%;margin-top:6px;font:inherit;font-size:13px;padding:7px 9px;border:1px solid var(--line-2);border-radius:7px;background:var(--bg);color:var(--ink)}
.cp-st a{white-space:nowrap}
/* counting sheet */
.bl.ct{max-width:1160px}
.ct-how{color:var(--ink-2);max-width:64ch;margin:16px 0}
.ct-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:10px;-webkit-overflow-scrolling:touch}
.ct-t{border-collapse:separate;border-spacing:0;width:100%;min-width:1040px;font-size:14px}
.ct-t th,.ct-t td{border-bottom:1px solid var(--line);border-right:1px solid var(--line);padding:0;text-align:center}
.ct-t thead th{font:500 10px var(--f-mono);letter-spacing:.06em;text-transform:uppercase;color:var(--ink-2);padding:8px 4px;vertical-align:bottom;line-height:1.3}
.ct-t tr.g th{background:var(--surface);color:var(--ink);padding:6px 4px}
.ct-t .r{position:sticky;left:0;background:var(--bg);text-align:left;min-width:150px;z-index:1;padding:0 8px;font-weight:400}
.ct-t thead .r{z-index:2}
.ct-t input{width:100%;min-width:48px;border:0;background:none;font:inherit;color:var(--ink);text-align:center;padding:9px 4px;-moz-appearance:textfield;appearance:textfield}
.ct-t input::-webkit-outer-spin-button,.ct-t input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.ct-t input:focus{outline:2px solid var(--accent);outline-offset:-2px}
.ct-t .rn{text-align:left;padding-left:0}
.ct-t .x{width:34px;border-right:0}
.ct-rm{background:none;border:0;color:var(--ink-2);font-size:18px;line-height:1;cursor:pointer;padding:6px 8px}
.ct-rm:hover{color:#9b2c2c}
.ct-t tfoot th,.ct-t tfoot td,.ct-t tfoot .r{background:var(--surface);font:500 12px var(--f-mono);padding:8px 4px}
.ct-t tfoot .r{padding:8px}
.ct-t tfoot small{display:block;font-size:9.5px;color:var(--ink-2);letter-spacing:.06em;text-transform:uppercase;font-weight:400}
.ct-t tr.pr td{position:relative;padding:0}
.ct-t .cur{position:absolute;left:6px;top:50%;transform:translateY(-50%);color:var(--ink-2);font-size:11px;pointer-events:none}
.ct-t tr.pr input{padding-left:14px;font:500 12px var(--f-mono)}
.ct-t tbody tr:last-child th,.ct-t tbody tr:last-child td{border-bottom-color:var(--line-2)}
.ct-sum{font:12.5px var(--f-mono);letter-spacing:.04em;color:var(--ink-2);margin:14px 0 0;min-height:1em}
.ct-sum b{color:var(--ink);font-weight:500}
.bl-local a{color:inherit;text-decoration:underline;text-underline-offset:3px}
@media (max-width:640px){.ct-t .r{min-width:112px;width:112px;padding:0 6px}.ct-t{font-size:13.5px}}
@media print{
  .ct{page:land}
  .ct-how,.ct-t .x,#ctReset{display:none!important}
  .ct-wrap{overflow:visible;border:0}
  .ct-t{min-width:0;font-size:9.5px}
  .ct-t .r{position:static;min-width:0;width:110px}
  .ct-t input{padding:3px 1px;min-width:0}
  .ct-t thead th{font-size:7px;padding:4px 2px}
  .ct-t thead,.ct-t tfoot{display:table-row-group}
  .ct-t tfoot th,.ct-t tfoot td,.ct-t tfoot .r{padding:3px 2px;font-size:8.5px}
  .ct-t tfoot small{display:none}
  .ct-t tr.pr input{padding:3px 2px 3px 10px;font-size:8.5px}
  .ct-t .cur{left:3px;font-size:8px}
}
@page land{size:letter landscape;margin:.4in}
.db{display:inline-flex;align-items:center;gap:6px;font:500 9.5px var(--f-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--accent);margin:12px 0 2px}
.db::before{content:'';width:7px;height:7px;border-radius:50%;border:1.5px solid currentColor;box-shadow:inset 0 0 0 1.5px var(--bg);background:currentColor}
.pro-form{margin-top:auto}
.pro-form input{flex-basis:100%}
.lp-form .fine.err{color:#9b2c2c}
.hp{position:absolute!important;left:-9999px;width:1px;height:1px;opacity:0}
.lp .foot{margin-top:72px}
/* ---- landing extras ---- */
.lp-p{font-size:17px;line-height:1.55;color:var(--ink-2);margin-top:12px}
.lp-p a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.lp-ask{position:relative;margin:26px 0 6px;max-width:460px}
.lp-ask input{width:100%;padding:13px 14px 13px 40px;border-radius:10px;border:1px solid var(--line-2);background:var(--bg);font:inherit;font-size:15.5px;color:var(--ink)}
.lp-ask input:focus{outline:2px solid var(--accent);outline-offset:1px;border-color:var(--accent)}
.lp-ask svg{position:absolute;left:14px;top:15px;color:var(--ink-2)}
.ask-res{position:absolute;z-index:30;left:0;right:0;top:calc(100% + 6px);background:var(--bg);border:1px solid var(--line);border-radius:10px;box-shadow:0 10px 30px rgba(0,0,0,.08);list-style:none;margin:0;padding:6px;max-height:360px;overflow:auto}
.ask-res a{display:block;padding:9px 10px;border-radius:7px}
.ask-res a:hover,.ask-res a.on{background:var(--surface)}
.ask-res b{display:block;font-weight:500;font-size:14.5px}
.ask-res span{display:block;font-size:12.5px;color:var(--ink-2);margin-top:2px}
.ask-res .tg{display:inline-block;margin-left:6px}
.ask-res .lkt{font-family:var(--f-mono);font-size:10px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-2)}
.ask-hint{font-size:12.5px;color:var(--ink-2)}
.ask-hint button{background:none;border:0;padding:0;font:inherit;color:var(--accent);cursor:pointer;text-decoration:underline;text-underline-offset:2px}
.lp-hero .mk2{opacity:0;animation:mkin .45s ease forwards}
.lp-hero .lg li{opacity:0;animation:mkin .45s ease forwards}
.lp-hero .mk2:nth-child(1),.lp-hero .lg li:nth-child(1){animation-delay:0.41s}
.lp-hero .mk2:nth-child(2),.lp-hero .lg li:nth-child(2){animation-delay:0.52s}
.lp-hero .mk2:nth-child(3),.lp-hero .lg li:nth-child(3){animation-delay:0.63s}
.lp-hero .mk2:nth-child(4),.lp-hero .lg li:nth-child(4){animation-delay:0.74s}
.lp-hero .mk2:nth-child(5),.lp-hero .lg li:nth-child(5){animation-delay:0.85s}
.lp-hero .mk2:nth-child(6),.lp-hero .lg li:nth-child(6){animation-delay:0.96s}
.lp-hero .mk2:nth-child(7),.lp-hero .lg li:nth-child(7){animation-delay:1.07s}
.lp-hero .mk2:nth-child(8),.lp-hero .lg li:nth-child(8){animation-delay:1.18s}
.lp-hero .mk2:nth-child(9),.lp-hero .lg li:nth-child(9){animation-delay:1.29s}
.lp-hero .mk2:nth-child(10),.lp-hero .lg li:nth-child(10){animation-delay:1.40s}
@keyframes mkin{from{opacity:0}to{opacity:1}}

@media (prefers-reduced-motion:reduce){.lp-hero .mk2,.lp-hero .lg li{animation:none;opacity:1}}
.dm{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(24px,5vw,64px);align-items:start;padding:88px 0 0}
.dm-ctl{display:flex;flex-direction:column;gap:14px;margin-top:24px}
.dm-tabs,.dm-seg{display:inline-flex;flex-wrap:wrap;gap:6px}
.dm-tabs button,.dm-seg button{border:1px solid var(--line-2);background:var(--bg);border-radius:999px;padding:7px 14px;font:inherit;font-size:14px;cursor:pointer;color:var(--ink)}
.dm-tabs button[aria-selected=true]{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.dm-seg{border:1px solid var(--line-2);border-radius:999px;padding:3px;gap:2px;align-self:flex-start}
.dm-seg button{border:0;padding:6px 14px}
.dm-seg button[aria-pressed=true]{background:var(--accent);color:var(--bg)}
.dm-box{background:var(--surface);border-radius:14px;padding:20px}
.dm-art{background:var(--bg);border-radius:10px;padding:10px;margin-bottom:14px}
.dm-art img{aspect-ratio:3/2;object-fit:contain}
.dm-stair{display:block;width:100%;height:auto;overflow:visible}
.dm-stair path,.dm-stair line{fill:none;stroke-linejoin:round;stroke-linecap:round;transition:opacity .25s}
.dm-stair .gl{stroke:var(--ink);stroke-width:1.6}
.dm-stair .eh line{stroke:var(--ink-2);stroke-width:.8;opacity:.45}
.dm-stair .gfill{fill:color-mix(in srgb,var(--accent) 10%,transparent);stroke:none}
.dm-stair .gfill.h{fill:url(#dmh)}
.dm-stair .hl{stroke:var(--accent);stroke-width:.7;opacity:.35}
.dm-stair path.sc{stroke:var(--ink-2);stroke-width:1.6;stroke-dasharray:4 4}
.dm-stair path.sg{stroke:var(--accent);stroke-width:2.4}
.dm-stair .pl{stroke-width:1;stroke-dasharray:1 4;opacity:.8}
.dm-stair .pl.c{stroke:var(--ink-2)}
.dm-stair .pl.g{stroke:var(--accent)}
.dm-stair text{font:11.5px var(--f-mono);fill:var(--ink-2);letter-spacing:.02em}
.dm-stair text.ang{font-size:12.5px}
.dm-stair text.ang.g,.dm-stair g.sg text,.dm-stair .dim text{fill:var(--accent)}
.dm-stair .dim line{stroke:var(--accent);stroke-width:1}
.dm-stair g{transition:opacity .25s}
.dm-box .rail{position:static;width:auto}
.dm-box .rail .panel{background:var(--bg)}
.dm-box .kn span{transition:opacity .25s}
.dm-box[data-v=code] .kn span.acc{opacity:.15}
.dm-box[data-v=good] .kn span.n:not(.acc),.dm-box[data-v=good] .kn span.h:not(.acc){opacity:.15}
.dm-box[data-v=code] .sg,.dm-box[data-v=good] .sc{opacity:.08}
.dm-more{display:inline-block;margin-top:12px;font-size:14px;font-weight:500;color:var(--accent)}
.lp-zoom{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;counter-reset:z}
.lp-z{position:relative;background:var(--surface);border-radius:12px;padding:14px 14px 12px}
.lp-z img{aspect-ratio:1/1;object-fit:contain;background:var(--bg);border-radius:8px}
.lp-z b{display:block;margin-top:10px;font-family:var(--f-mono);font-weight:400;font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}
.lp-z span{font-size:14.5px}
.lp-z:not(:last-child)::after{content:"→";position:absolute;right:-13px;top:42%;font-family:var(--f-mono);color:var(--ink-2);z-index:2}
.lp-fix{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
a.fix{display:block;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.fix-row{display:grid;grid-template-columns:1fr 1fr}
.fix-row figure{margin:0;padding:12px;background:var(--surface)}
.fix-row figure + figure{border-left:1px solid var(--line)}
.fix-row img{aspect-ratio:1/1;object-fit:contain}
.fix-row figcaption{font-size:13.5px;line-height:1.4;margin-top:8px}
.fix-row .no{color:var(--warn)}.fix-row .ok{color:var(--accent)}
a.fix h3{font-family:var(--f-display);font-size:24px;padding:14px 16px 2px}
a.fix p{font-size:14px;color:var(--ink-2);padding:0 16px 14px}
.lp-recent{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:12px}
.lp-r{display:block;background:var(--surface);border-radius:10px;padding:10px}
.lp-r img{aspect-ratio:1/1;object-fit:contain}
.lp-r span{display:block;margin-top:6px;font-size:13px;line-height:1.35}
.lp-r b{display:block;font-family:var(--f-mono);font-weight:400;font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-2)}
.lp-who{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.who{display:flex;flex-direction:column;gap:8px;border:1px solid var(--line);border-radius:14px;padding:22px}
.who h3{font-family:var(--f-display);font-size:30px;line-height:1}
.who p{font-size:15px;color:var(--ink-2);line-height:1.5;flex:1}
.who a{font-size:14.5px;font-weight:500;color:var(--accent)}
.who a::before{content:"“"}.who a::after{content:"” →"}
.lp-trust{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(24px,5vw,64px);padding:88px 0 0;align-items:start}
.lp-trust ul{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.lp-trust li{padding:14px 0;border-bottom:1px solid var(--line);font-size:15.5px;line-height:1.5}
.lp-trust li b{display:block;font-family:var(--f-mono);font-weight:400;font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2);margin-bottom:3px}
.lp-sample{display:none}
.lp-dl{display:inline-flex;margin-top:4px}
.lp-sticky{position:fixed;left:0;right:0;bottom:0;z-index:40;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px max(16px,env(safe-area-inset-right,0px)) calc(10px + env(safe-area-inset-bottom,0px)) max(16px,env(safe-area-inset-left,0px));background:var(--bg);border-top:1px solid var(--line);box-shadow:0 -6px 20px rgba(0,0,0,.06);transform:translateY(110%);transition:transform .25s}
.lp-sticky.on{transform:none}
.lp-sticky span{font-size:14px}.lp-sticky s{color:var(--ink-2)}
.lp-sticky .btn{padding:9px 14px;font-size:14px}
@media (min-width:901px){.lp-sticky{display:none}}
@media (max-width:900px){
  .dm,.lp-trust{grid-template-columns:minmax(0,1fr)}
  .lp-zoom{grid-template-columns:repeat(2,minmax(0,1fr))}
  .lp-z:nth-child(2)::after{display:none}
  .lp-fix,.lp-who{grid-template-columns:minmax(0,1fr)}
  .lp-recent{grid-template-columns:repeat(3,minmax(0,1fr))}
}

/* ---- reading tools ---- */
.skip{position:absolute;left:-9999px;top:8px;z-index:100;background:var(--ink);color:var(--bg);padding:8px 12px;border-radius:6px}
.skip:focus{left:12px}
.search{position:relative}
.qres{position:absolute;z-index:60;left:0;right:0;top:calc(100% + 6px);min-width:340px;background:var(--bg);border:1px solid var(--line);border-radius:10px;box-shadow:0 10px 30px rgba(0,0,0,.08);list-style:none;margin:0;padding:6px;max-height:420px;overflow:auto}
.qres a{display:block;padding:9px 10px;border-radius:7px}
.qres a:hover,.qres a.on{background:var(--surface)}
.qres b{display:block;font-weight:500;font-size:14.5px}
.qres span{display:block;font-size:12.5px;color:var(--ink-2);margin-top:2px}
.qres .lkt{display:inline;font-family:var(--f-mono);font-size:10px;letter-spacing:.08em;text-transform:uppercase}
.main .art img,.main figure .art{cursor:zoom-in}
.art .ov{pointer-events:none}
.lb{position:fixed;inset:0;z-index:200;background:var(--bg,#fff);display:flex;align-items:center;justify-content:center;padding:clamp(12px,3vw,40px) clamp(12px,3vw,40px) 72px;cursor:zoom-out}
.lb-in{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:clamp(20px,3vw,44px);align-items:center;width:min(1500px,100%);max-height:100%}
.lb-fig{display:flex;justify-content:center;min-width:0}
.lb .art{display:inline-block;width:auto;max-width:100%;background:none;padding:0;border:0}
.lb .art img{max-height:calc(100vh - 140px);width:auto;max-width:100%;height:auto;aspect-ratio:auto;object-fit:contain;cursor:zoom-out}
.lb .mk2{width:24px;height:24px;font-size:12px}
.lb-txt{cursor:auto;max-height:calc(100vh - 140px);overflow:auto;border-left:1px solid var(--line);padding:4px 0 4px clamp(18px,2.4vw,32px)}
.lb-eb{margin-bottom:8px}
.lb-t{font-family:var(--f-serif,'Instrument Serif',Georgia,serif);font-weight:400;font-size:clamp(28px,2.6vw,38px);line-height:1.05;margin:0 0 14px;letter-spacing:-.01em}
.lb-body{font-size:15px;line-height:1.55;color:var(--ink)}
.lb-body ul{margin:10px 0;padding-left:18px}.lb-body li{margin:4px 0}
.lb-body p{margin:0 0 12px;color:var(--ink-2)}
.lb-body .lg{list-style:none;margin:14px 0;padding:0;columns:1}.lb-body .lg li{display:flex;gap:10px;align-items:baseline;padding:5px 0;border-bottom:1px solid var(--line)}
.lb-body .lg b{font-family:var(--f-mono);font-size:11px;min-width:18px;color:var(--accent)}
.lb-body .db{display:inline-block;margin:0 0 6px}
.lb-rule{font-family:var(--f-serif,'Instrument Serif',Georgia,serif);font-style:italic;font-size:19px;color:var(--ink)!important;margin-top:16px!important}
.lb-nav{position:absolute;left:50%;bottom:18px;transform:translateX(-50%);display:flex;align-items:center;gap:14px;cursor:auto;font-family:var(--f-mono);font-size:12px;color:var(--ink-2)}
.lb-nav button,.lb-x{border:1px solid var(--line-2);background:var(--bg);border-radius:999px;width:38px;height:38px;font-size:18px;line-height:1;cursor:pointer;color:var(--ink)}
.lb-nav button:hover,.lb-x:hover{border-color:var(--ink)}
.lb-x{position:absolute;top:14px;right:16px;font-size:20px}
.lb-body .term{border:0!important;text-decoration:none!important;background:none!important;padding:0!important;color:inherit!important;cursor:auto}
.citepop{z-index:260!important}
@media (max-width:860px){.lb{align-items:flex-start;overflow:auto;padding-top:60px}.lb-in{grid-template-columns:1fr;max-height:none}.lb .art img{max-height:56vh}.lb-txt{border-left:0;border-top:1px solid var(--line);padding:16px 0 0;max-height:none;overflow:visible}.lb-nav{position:fixed;background:var(--bg);padding:6px 10px;border-radius:999px;border:1px solid var(--line)}}
.ptools{display:flex;gap:6px;margin-top:10px}
.ptools button,.ptools a{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:var(--bg);border-radius:999px;padding:4px 10px;font:inherit;font-family:var(--f-mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-2);cursor:pointer}
.ptools button:hover,.ptools a:hover{color:var(--ink);border-color:var(--line-2)}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--ink);color:var(--bg);padding:9px 14px;border-radius:8px;font-size:14px;z-index:210}
.pn{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:64px}
.pn a{display:flex;flex-direction:column;gap:4px;border:1px solid var(--line);border-radius:12px;padding:16px 18px}
.pn a:hover{border-color:var(--ink)}
.pn .pn-b{text-align:right}
.pn span{font-family:var(--f-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2)}
.pn b{font-family:var(--f-display);font-weight:400;font-size:26px;line-height:1.1}
@media print{
  .top,.side,.scrim,.totop,.c-nav,.ft,.pn,.ptools,.skip,.unlock,.lp-sticky,.cite{display:none!important}
  .shell{display:block}.main{padding:0}.rail{position:static!important;width:auto}
  .cell,figure,.strip{break-inside:avoid}
  .art img{mix-blend-mode:normal}
  a{text-decoration:none}
  body{font-size:11pt}
  @page{margin:.6in}
}

/* ---- ochre highlights (Vallon) ---- */
:root{--ochre:#E3B859;--ochre-2:#F6EBCF}
.lp-hero h1 i,.au h1 i{color:var(--ink);background:none;padding:0 .04em;position:relative;isolation:isolate;display:inline-block}
.lp-hero h1 i::before,.au h1 i::before{content:"";position:absolute;z-index:-1;left:-.07em;right:-.1em;top:50%;bottom:.02em;background:url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 400 60' preserveAspectRatio='none'><defs><linearGradient id='g' x1='0' x2='1'><stop offset='0' stop-color='%23E9BE52' stop-opacity='.95'/><stop offset='.03' stop-color='%23EDC65E' stop-opacity='.78'/><stop offset='.5' stop-color='%23EFCB66' stop-opacity='.66'/><stop offset='.95' stop-color='%23EDC65E' stop-opacity='.74'/><stop offset='1' stop-color='%23E2B444' stop-opacity='.95'/></linearGradient><filter id='f' x='-5%' y='-20%' width='110%' height='140%'><feTurbulence type='fractalNoise' baseFrequency='.012 .25' numOctaves='2' seed='7' result='n'/><feDisplacementMap in='SourceGraphic' in2='n' scale='5' xChannelSelector='R' yChannelSelector='G' result='d'/><feTurbulence type='fractalNoise' baseFrequency='.003 .55' numOctaves='2' seed='3' result='s'/><feColorMatrix in='s' type='matrix' values='0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 -.7 1.3' result='m'/><feComposite in='d' in2='m' operator='in'/></filter></defs><path filter='url(%23f)' fill='url(%23g)' d='M9 13 C80 10 170 11 250 9 S360 7 393 8 L389 50 C320 51 240 52 160 53 S60 55 5 55 Z'/></svg>") no-repeat center/100% 100%;mix-blend-mode:multiply;transform:rotate(-1.4deg) skewX(-6deg);transform-origin:left center;pointer-events:none}
.lp-hero h1 i::before{animation:hlin .65s cubic-bezier(.4,.1,.3,1) .35s both}
@keyframes hlin{from{clip-path:inset(0 100% 0 0)}to{clip-path:inset(0 0 0 0)}}
@media (prefers-reduced-motion:reduce){.lp-hero h1 i::before{animation:none}}
.tg{border-color:var(--ochre);background:var(--ochre-2);color:#6B4A0E}
.badge:not(.soft){background:var(--ochre);color:#1F1F1F}
.lp-z b{color:#8A6114}
::selection{background:var(--ochre-2)}

/* ---- footer ---- */
.ft{margin-top:96px;border-top:1px solid var(--line);padding:44px 0 28px}
.ft-top{display:grid;grid-template-columns:minmax(0,1.6fr) repeat(3,minmax(0,1fr));gap:32px}
.ft-brand .brand{font-size:28px}
.ft-brand p{margin:10px 0 18px;font-size:15px;line-height:1.5;color:var(--ink-2);max-width:32ch}
.ft-cta{font-size:14px;padding:9px 14px}
.ft-col{display:flex;flex-direction:column;gap:9px;font-size:14.5px}
.ft-col h4{font-family:var(--f-mono);font-weight:400;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2);margin:4px 0 6px}
.ft-col a{color:var(--ink)}
.ft-col a:hover,.ft-bot a:hover{color:var(--accent)}
.ft-bot{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 24px;margin-top:40px;padding-top:18px;border-top:1px solid var(--line);font-family:var(--f-mono);font-size:11.5px;letter-spacing:.04em;color:var(--ink-2)}
.ft-bot a{color:var(--ink);text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--line-2)}
.main .ft{margin-top:72px}
@media (max-width:900px){.ft-top{grid-template-columns:1fr 1fr}.ft-brand{grid-column:1/-1}}
@media (max-width:480px){.ft-top{grid-template-columns:1fr 1fr;gap:28px 20px}}
.prose p + p{margin-top:14px}
.prose ul{padding-left:22px}
.lp-prose{margin:0 auto;padding-top:clamp(36px,6vw,72px)}
/* ---- checkout ---- */
.co{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:clamp(28px,5vw,72px);align-items:start;padding:clamp(32px,6vw,72px) 0 0}
.co-back{display:inline-block;font-size:14px;color:var(--ink-2);margin-bottom:22px}
.co-back:hover{color:var(--ink)}
.co h1{font-family:var(--f-display);font-size:clamp(40px,5.5vw,60px);line-height:1;margin:10px 0 14px}
.co-sub{font-size:17px;line-height:1.55;color:var(--ink-2);max-width:48ch}
.co-form{display:flex;flex-direction:column;gap:8px;margin-top:30px;max-width:460px}
.co-form > label,.co-role legend{font-size:14px;font-weight:500;margin-top:10px}
.co-form .opt{font-weight:400;color:var(--ink-2)}
.co-form input[type=email],.co-form input[type=text]{padding:12px 14px;border-radius:8px;border:1px solid var(--line-2);background:var(--bg);color:var(--ink);font:inherit;font-size:15.5px}
.co-form input:focus{outline:2px solid var(--accent);outline-offset:1px;border-color:var(--accent)}
.co-role{border:0;padding:0;margin:6px 0 0;display:flex;flex-direction:column;gap:8px}
.co-role legend{padding:0;margin-bottom:6px}
.co-role label{display:flex;align-items:center;gap:10px;padding:11px 14px;border:1px solid var(--line);border-radius:8px;font-size:15px;cursor:pointer}
.co-role label:has(input:checked){border-color:var(--accent);background:var(--surface)}
.co-role input{accent-color:var(--accent)}
.co-pay{margin-top:18px;padding:14px 18px;font-size:16px}
.co-msg{font-size:14.5px;color:var(--accent);min-height:1em}
.co-msg.err{color:var(--warn)}
.co-secure{display:flex;align-items:center;gap:8px}
.lockico{display:inline-block;width:10px;height:12px;background:currentColor;-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 9 10'%3E%3Cpath d='M2 4V3a2.5 2.5 0 0 1 5 0v1h1v6H1V4zm1 0h3V3a1.5 1.5 0 0 0-3 0z'/%3E%3C/svg%3E") no-repeat center/contain;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 9 10'%3E%3Cpath d='M2 4V3a2.5 2.5 0 0 1 5 0v1h1v6H1V4zm1 0h3V3a1.5 1.5 0 0 0-3 0z'/%3E%3C/svg%3E") no-repeat center/contain}
.co-sum{position:sticky;top:96px}
.co-card{position:relative;border:1px solid var(--accent);box-shadow:0 0 0 1px var(--accent);border-radius:14px;padding:28px 24px 20px;background:var(--bg)}
.co-item{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.co-item h2{font-family:var(--f-display);font-size:28px;line-height:1.05}
.co-plan{font-family:var(--f-mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-2)}
.co-price{font-family:var(--f-display);font-size:30px;white-space:nowrap}
.co-price s{font-size:20px;color:var(--ink-2);margin-right:4px}
.co-list{list-style:none;margin:16px 0;padding:0;display:flex;flex-direction:column;gap:9px;font-size:14.5px}
.co-list li{padding-left:20px;position:relative;line-height:1.45}
.co-list li::before{content:"";position:absolute;left:2px;top:.55em;width:9px;height:5px;border-left:1.6px solid var(--accent);border-bottom:1.6px solid var(--accent);transform:rotate(-45deg)}
.co-total{display:flex;justify-content:space-between;align-items:baseline;padding-top:14px;border-top:1px solid var(--line);font-size:15px}
.co-total b{font-family:var(--f-display);font-weight:400;font-size:34px}
@media (max-width:900px){.co{grid-template-columns:minmax(0,1fr)}.co-sum{position:static;order:-1}}

@media (max-width:900px){
  .lp-nav{display:none}
  .lp-top .cta{margin-left:auto}
  .lp-hero,.lp-split,.lp-list{grid-template-columns:minmax(0,1fr)}
  .lp-rail .rail{margin:0}
  .lp-stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .lp-stats div:nth-child(3){border-left:0;padding-left:0}
  .lp-stats div:nth-child(n+3){border-top:1px solid var(--line)}
  .lp-gallery{grid-template-columns:repeat(2,minmax(0,1fr))}
  .lp-frees,.lp-plans{grid-template-columns:minmax(0,1fr)}
  .plan.feat{order:-1}
  .lp-hero .figure .lg{grid-template-columns:1fr 1fr;display:grid}
}

/* ---- chapter reading UX ---- */
:root{--rail:256px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
/* you-are-here bar */
.c-nav.yh{display:block;overflow:visible;gap:0;border-bottom:0;margin-bottom:22px;padding:0}
.yh-row{display:flex;align-items:center;gap:14px;min-height:48px;border-bottom:1px solid var(--line)}
.yh-btn{display:flex;align-items:baseline;gap:8px;min-width:0;background:none;border:0;padding:12px 0;cursor:pointer;text-align:left;font-size:15px}
.yh-ch{color:var(--ink-2);white-space:nowrap}
.yh-sl{color:var(--line-2)}
.yh-cur{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:600}
.yh-n{font-family:var(--f-mono);font-size:12px;font-weight:500;color:var(--accent);margin-right:2px}
.yh-cv{width:12px;height:12px;flex:0 0 12px;align-self:center;color:var(--ink-2);transition:transform .2s}
.yh-btn[aria-expanded="true"] .yh-cv{transform:rotate(180deg)}
.yh-btn:hover .yh-cur{text-decoration:underline;text-underline-offset:4px;text-decoration-color:var(--line-2)}
.yh-c{margin-left:auto;font-family:var(--f-mono);font-size:11.5px;letter-spacing:.06em;color:var(--ink-2);white-space:nowrap}
.yh-c b{font-weight:500;color:var(--ink)}
.c-nav.yh .yh-nx{font-size:13.5px;color:var(--ink-2);white-space:nowrap;padding:5px 12px;border:1px solid var(--line);border-radius:999px;line-height:1.3;transition:border-color .15s,background .15s}
.c-nav.yh .yh-nx span{color:var(--ink);font-weight:500}
.c-nav.yh .yh-nx:hover{border-color:var(--line-2);background:var(--surface);color:var(--ink)}
.c-nav.yh .yh-btn{border:0;padding:12px 0;color:var(--ink)}
.c-body > .page{scroll-margin-top:0}
.yh-prog{height:2px;background:transparent;margin-top:-1px;position:relative}
.yh-prog i{position:absolute;left:0;top:0;bottom:0;width:100%;background:var(--accent);transform-origin:left;transform:scaleX(0)}
.yh-menu{position:absolute;left:0;top:calc(100% + 6px);z-index:30;width:min(440px,100%);max-height:min(70vh,560px);overflow:auto;background:var(--bg);border:1px solid var(--line);border-radius:12px;box-shadow:0 16px 40px rgba(0,0,0,.12);padding:8px}
.c-nav.yh{position:sticky}
.yh-mh{font-family:var(--f-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2);padding:8px 10px 6px}
.yh-menu ol{list-style:none;margin:0;padding:0}
.yh-menu a{display:flex;align-items:baseline;gap:12px;padding:8px 10px;border-radius:7px;font-size:15px}
.yh-menu a:hover{background:var(--surface)}
.yh-menu a[aria-current="true"]{background:var(--surface);font-weight:600}
.yh-menu a[aria-current="true"] .yh-mn{color:var(--accent)}
.yh-mn{font-family:var(--f-mono);font-size:12px;color:var(--ink-2);min-width:34px}
.yh-menu a.lk{color:var(--ink-2)}
.yh-lk{width:9px;height:10px;margin-left:auto;align-self:center;color:var(--ink-2)}
@media (max-width:1100px){.yh-nx{display:none}}
@media (max-width:600px){.yh-ch,.yh-sl{display:none}.c-nav.yh{margin-left:-16px;margin-right:-16px;padding:0 16px}.yh-menu{left:8px;right:8px;width:auto}}
/* key numbers: one row each */
.kn.kn2{display:block}
.kn2 .kr{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:1px 14px;padding:9px 0;border-top:1px solid var(--line)}
.kn2 .kr.kh{border-top:0;padding:0 0 6px}
.kn2 .kl{grid-column:1/-1;font-size:13.5px;line-height:1.35}
.kn2 .n,.kn2 .h{text-align:left;line-height:1.4}
.kn2 .n{font-size:12.5px;white-space:normal;overflow-wrap:anywhere}
.c-nav.yh .yh-menu a{border:0;white-space:normal;color:var(--ink)}
@media (max-width:600px){.has-yh .totop{display:none!important}}
.kn2 .n:not(.acc){color:var(--ink-2)}
.kn-d > summary{list-style:none;display:flex;align-items:baseline;justify-content:space-between;gap:12px}
.kn-d > summary::-webkit-details-marker{display:none}
.kn-cnt{display:none;align-items:center;gap:6px;font-family:var(--f-mono);font-size:11px;letter-spacing:.06em;color:var(--ink-2)}
.kn-cnt svg{width:12px;height:12px;transition:transform .2s}
.kn-d[open] .kn-cnt svg{transform:rotate(180deg)}
@media (min-width:901px){.kn-d > summary{pointer-events:none}}
@media (max-width:900px){
  .chapter .kn-d > summary{cursor:pointer;padding:2px 0}
  .chapter .kn-d > summary h5{margin:0}
  .chapter .kn-d[open] > summary{margin-bottom:10px}
  .chapter .kn-cnt{display:inline-flex}
  .chapter .rail{padding-bottom:18px}
}
/* section head: quieter quote, tools as icons */
.phead .rule{border:0;border-left:2px solid var(--ochre);border-radius:0;padding:2px 0 2px 16px;margin-top:28px;font-size:19px;line-height:1.3;color:var(--ink-2);text-align:left}
@media (max-width:760px){.phead .rule{margin-top:0}}
.ph-top{display:flex;align-items:center;gap:10px;min-height:26px}
.ptools{display:flex;gap:2px;margin:0;opacity:0;transition:opacity .15s}
.page:hover .ptools,.ptools:focus-within{opacity:1}
@media (hover:none){.ptools{opacity:.75}}
.ptools button,.ptools a{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;padding:0;border:0;border-radius:6px;background:none;color:var(--ink-2);cursor:pointer;text-transform:none;letter-spacing:0}
.ptools button:hover,.ptools a:hover{background:var(--surface);color:var(--ink)}
.ptools svg{width:15px;height:15px}
/* next section */
.nxt{align-self:flex-end;display:inline-flex;align-items:baseline;gap:10px;max-width:100%;padding:10px 16px;border:1px solid var(--line);border-radius:999px;font-size:14.5px}
.nxt:hover{border-color:var(--ink)}
.nxt-k{font-family:var(--f-mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2)}
.nxt-t{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.nxt-t em{font-style:normal;font-family:var(--f-mono);font-size:12px;color:var(--accent);margin-right:4px}
.nxt-a{color:var(--ink-2)}
/* text-only spreads (family trees) on phones */
@media (max-width:600px){
  .spread.txt{grid-template-columns:repeat(2,minmax(0,1fr))}
  .spread.txt .cell{padding:12px 12px 14px;gap:8px}
  .spread.txt ul{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:4px}
  .spread.txt li{margin:0;font-size:12.5px;line-height:1.3;padding:2px 7px;border:1px solid var(--line);border-radius:999px;background:var(--bg)}
}
/* phone header: search collapses to an icon */
@media (max-width:600px){
  .top-in{gap:10px}
  .top .search{flex:0 0 38px;width:38px;max-width:38px;height:38px;padding:0;justify-content:center;margin-left:auto;cursor:pointer}
  .top .search input{position:absolute;opacity:0;pointer-events:none;width:1px}
  body.q-open .top .search{position:absolute;left:12px;right:12px;top:11px;width:auto;max-width:none;flex:none;justify-content:flex-start;padding:0 10px;z-index:5;box-shadow:0 0 0 12px var(--bg)}
  body.q-open .top .search input{position:static;opacity:1;pointer-events:auto;width:100%}
  .top .signin{display:none}
  .lp-top .signin{display:inline}
  .totop{width:40px;height:40px;padding:0;font-size:0}
  .totop::before{content:"↑";font-size:16px}
}
/* ---- focus chips ---- */
.fx{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:8px}
.fx-l{font-family:var(--f-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2);margin-right:4px}
.fx-c{display:inline-flex;align-items:center;gap:7px;padding:5px 12px;border:1px solid var(--line-2);border-radius:999px;background:var(--bg);font:inherit;font-size:14px;cursor:pointer;color:var(--ink)}
.fx-c span{font-family:var(--f-mono);font-size:11px;color:var(--ink-2)}
.fx-c:hover{border-color:var(--ink)}
.fx-c[aria-pressed="true"]{background:var(--ochre-2);border-color:var(--ochre)}
.fx-c[aria-pressed="true"] span{color:#6B4A0E}
.c-body .cell,.c-body figure.figure,.c-body .strip{transition:opacity .25s,box-shadow .25s}
.focusing .c-body :is(.cell,figure.figure,.strip):not(.hit){opacity:.18}
.focusing .c-body .hit{box-shadow:inset 0 0 0 2px var(--ochre)}
.focusing .c-body .hit.now{box-shadow:inset 0 0 0 3px var(--ochre),0 0 0 4px var(--ochre-2)}
.fx-bar{position:fixed;left:50%;bottom:calc(18px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);z-index:45;display:flex;align-items:center;gap:6px;padding:6px 6px 6px 16px;background:var(--ink);color:var(--bg);border-radius:999px;box-shadow:0 10px 30px rgba(0,0,0,.2);font-size:14px;white-space:nowrap}
.fx-name{font-weight:600}
.fx-n{font-family:var(--f-mono);font-size:12px;opacity:.75;margin:0 6px 0 2px}
.fx-b,.fx-x{border:0;background:rgba(255,255,255,.12);color:inherit;font:inherit;border-radius:999px;cursor:pointer}
.fx-b{width:34px;height:34px;font-size:15px}
.fx-x{padding:0 14px;height:34px;font-size:13.5px}
.fx-b:hover,.fx-x:hover{background:rgba(255,255,255,.24)}
.focusing .totop{display:none!important}
.term{display:inline;padding:0;margin:0;border:0;background:none;font:inherit;color:inherit;cursor:pointer;text-decoration:underline dotted var(--ochre);text-decoration-thickness:2px;text-underline-offset:3px;line-height:inherit;border-radius:2px}
.term:hover{background:var(--ochre-2);text-decoration-style:solid}
.focusing .term[aria-pressed="true"]{background:var(--ochre-2)}
.fx-hint{position:absolute;z-index:60;background:var(--ink);color:var(--bg);font-size:12.5px;padding:5px 9px;border-radius:6px;pointer-events:none;white-space:nowrap}
@media (max-width:600px){.fx{gap:6px}.fx-c{font-size:13.5px;padding:5px 10px}}
@media print{.fx,.fx-bar{display:none!important}.focusing .c-body *{opacity:1!important;box-shadow:none!important}}

/* ---- account: header states ---- */
.in-only{display:none!important}
.is-in .in-only{display:block!important}
.is-in .out-only{display:none!important}
.is-member .nav-nm,.is-member .free-tag,.is-member .lkt,.is-member .buy,.is-member .ft-cta,.is-member .am-up,.is-member .free-only,.is-member .ac-free{display:none!important}
.is-free .member-only,.is-free .ac-member{display:none!important}
html:not(.is-member) .mo,html:not(.is-free) .free-only,html:not(.is-free) .ac-free{display:none!important}
@media (max-width:600px){
  .tiles{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 12px}
  .tile .art{padding:10px;border-radius:10px}
  .tile .nm{font-size:18px}
  .tile .st2{font-size:9.5px;letter-spacing:.08em}
  .tile .tg{margin-left:0}
}
.signin{font-size:14px;color:var(--ink-2);white-space:nowrap;padding:6px 4px}
.signin:hover{color:var(--ink)}
.lp-top .signin{margin-left:6px}
.acct{position:relative}
.av{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;border:1px solid var(--line-2);background:var(--surface);font-family:var(--f-display);font-size:19px;line-height:1;cursor:pointer;color:var(--ink)}
.is-member .av{box-shadow:0 0 0 2px var(--bg),0 0 0 3.5px var(--ochre)}
.av:hover,.av[aria-expanded="true"]{border-color:var(--ink)}
.acct-menu{position:absolute;right:0;top:calc(100% + 10px);z-index:50;width:270px;background:var(--bg);border:1px solid var(--line);border-radius:12px;box-shadow:0 16px 40px rgba(0,0,0,.12);padding:8px}
.am-who{display:flex;flex-direction:column;gap:2px;padding:10px 10px 12px;border-bottom:1px solid var(--line);margin-bottom:6px}
.am-who b{font-weight:600;font-size:15px}
.am-who > span:not(.tg){font-size:13px;color:var(--ink-2);overflow:hidden;text-overflow:ellipsis}
.am-plan{align-self:flex-start;margin:8px 0 0!important}
.am-cont{display:flex;flex-direction:column;gap:1px;padding:10px;margin:0 0 6px;border-radius:8px;background:var(--surface)}
.am-cont span{font-family:var(--f-mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2)}
.am-cont b{font-weight:500;font-size:14px}
.am-cont:hover b{text-decoration:underline;text-underline-offset:3px}
.acct-menu nav{display:flex;flex-direction:column}
.acct-menu nav a,.am-out{display:block;width:100%;text-align:left;padding:8px 10px;border-radius:7px;font-size:14.5px;background:none;border:0;cursor:pointer;color:var(--ink)}
.acct-menu nav a:hover,.am-out:hover{background:var(--surface)}
.am-up{color:var(--accent)!important;font-weight:600}
.am-out{border-top:1px solid var(--line);border-radius:0 0 7px 7px;margin-top:6px;padding-top:10px;color:var(--ink-2)}
.side-acct{display:none;flex-direction:column;gap:2px;margin-top:24px;padding-top:14px;border-top:1px solid var(--line)}
.side-acct a{padding:6px 10px;font-size:14.5px;border-radius:6px}
.side-acct a.buy{color:var(--accent);font-weight:600}
@media (max-width:900px){.side-acct{display:flex}}
/* ---- sign in / welcome ---- */
.au{display:flex;justify-content:center;padding:clamp(40px,8vw,96px) 0 0}
.au-card{width:100%;max-width:480px}
.au h1{font-family:var(--f-display);font-weight:400;font-size:clamp(44px,6vw,64px);line-height:1;margin:10px 0 14px}

.au-sub{font-size:17px;line-height:1.55;color:var(--ink-2)}
.au-sub b{color:var(--ink);font-weight:600}
.au-form{margin-top:26px;max-width:none}
.au-form .btn{margin-top:12px;padding:13px 18px}
.au-alt{margin-top:34px;padding-top:20px;border-top:1px solid var(--line);font-size:14.5px;color:var(--ink-2)}
.au-alt b{color:var(--ink)}
.au-alt p + p{margin-top:8px;display:flex;flex-wrap:wrap;gap:6px 18px}
.au-alt a{color:var(--accent);font-weight:500}
.au-ico{width:56px;height:56px;border-radius:50%;background:var(--ochre-2);color:#6B4A0E;display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.au-ico svg{width:26px}
.au-tips{margin:22px 0 0;padding:16px 18px 16px 34px;background:var(--surface);border-radius:10px;font-size:14.5px;line-height:1.5}
.au-tips li + li{margin-top:6px}
.au-act{display:flex;flex-wrap:wrap;align-items:center;gap:12px 20px;margin-top:22px}
.linkbtn{background:none;border:0;padding:0;font:inherit;font-size:14.5px;color:var(--ink-2);text-decoration:underline;text-underline-offset:3px;cursor:pointer}
.wl .au-card{max-width:600px}
.wl-steps{list-style:none;counter-reset:w;margin:28px 0;padding:0;display:flex;flex-direction:column;gap:0}
.wl-steps li{counter-increment:w;display:grid;grid-template-columns:44px minmax(0,1fr);padding:16px 0;border-top:1px solid var(--line);font-size:15.5px;line-height:1.5;color:var(--ink-2)}
.wl-steps li::before{content:counter(w,decimal-leading-zero);font-family:var(--f-mono);font-size:12px;color:var(--accent);padding-top:3px}
.wl-steps b{color:var(--ink);font-weight:600}
.wl-steps a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.wl-go{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px}
.wl .fine a{color:var(--ink);text-decoration:underline;text-underline-offset:3px}
/* ---- account page ---- */
.ac{padding:clamp(36px,6vw,72px) 0 0}
.ac h1{font-family:var(--f-display);font-weight:400;font-size:clamp(44px,6vw,64px);line-height:1;margin:10px 0 18px}
.ac-head{display:flex;flex-direction:column;align-items:flex-start}
.ac-cont{min-width:min(360px,100%);border:1px solid var(--line);background:var(--bg);margin-bottom:8px}
.ac-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:22px}
.ac-box{border:1px solid var(--line);border-radius:14px;padding:22px 22px 24px}
.ac-box h2{font-family:var(--f-mono);font-weight:400;font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2);margin:0 0 16px}
.ac-plan{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}
.ac-pl{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.ac-pl b{font-family:var(--f-display);font-weight:400;font-size:30px;line-height:1.05}
.ac-pl .tg{margin:0}
.ac-member .fine{margin-top:6px}
.ac-links{margin-top:12px;font-size:14px}
.ac-links a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.ac-free p{margin-bottom:14px}
.ac-pro{margin-top:20px;padding-top:16px;border-top:1px dashed var(--line-2)}
.ac-pro .ac-pl b{font-size:22px}
.tg.soft{border-color:var(--line-2);background:none;color:var(--ink-2)}
.ac-dl{list-style:none;margin:0;padding:0}
.ac-dl li{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:12px 0;border-top:1px solid var(--line)}
.ac-dl li:first-child{border-top:0;padding-top:0}
.ac-dl b{display:block;font-weight:500;font-size:15px}
.ac-dl small{display:block;font-size:12.5px;color:var(--ink-2)}
.ac-dl .btn{padding:7px 12px;font-size:13.5px}
.ac-form{margin-top:0;max-width:none}
.ac-form > label:first-child{margin-top:0}
.ac-form .btn{align-self:flex-start;margin-top:10px}
.ac-tog{display:flex;gap:12px;align-items:flex-start;padding:10px 0;font-size:15px;cursor:pointer}
.ac-tog + .ac-tog{border-top:1px solid var(--line)}
.ac-tog input{width:17px;height:17px;margin-top:3px;accent-color:var(--accent)}
.ac-tog b{display:block;font-weight:500}
.ac-tog small{display:block;font-size:13px;color:var(--ink-2)}
.ac-foot{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}
.ac-foot a{text-decoration:underline;text-underline-offset:3px}
@media (max-width:800px){.ac-grid{grid-template-columns:minmax(0,1fr)}}