/* learningspaceintegrator.com
   Layout concept: a calm, cool-paper reading surface with a floor-plan tile motif.
   Fraunces carries headlines; Public Sans (the U.S. public-sector typeface) carries
   everything a superintendent or purchasing director needs to read and act on. */

@font-face{font-family:"Fraunces";font-weight:500;font-display:swap;src:url("../fonts/fraunces-latin-500-normal.woff2") format("woff2")}
@font-face{font-family:"Fraunces";font-weight:600;font-display:swap;src:url("../fonts/fraunces-latin-600-normal.woff2") format("woff2")}
@font-face{font-family:"Fraunces";font-style:italic;font-weight:400;font-display:swap;src:url("../fonts/fraunces-latin-400-italic.woff2") format("woff2")}
@font-face{font-family:"Public Sans";font-weight:400;font-display:swap;src:url("../fonts/public-sans-latin-400-normal.woff2") format("woff2")}
@font-face{font-family:"Public Sans";font-weight:500;font-display:swap;src:url("../fonts/public-sans-latin-500-normal.woff2") format("woff2")}
@font-face{font-family:"Public Sans";font-weight:600;font-display:swap;src:url("../fonts/public-sans-latin-600-normal.woff2") format("woff2")}
@font-face{font-family:"Public Sans";font-weight:700;font-display:swap;src:url("../fonts/public-sans-latin-700-normal.woff2") format("woff2")}

:root{
  --bg:#F3F6F5; --surface:#FFFFFF; --ink:#13233A; --muted:#4D5A69; --line:#D3DCD9;
  --teal:#1F6F66; --teal-ink:#174F49; --teal-tint:#E1EDEA;
  --clay:#B4532A; --clay-tint:#F5E3D8;
  --band:#13233A; --band-ink:#F3F6F5; --band-muted:#AEBBC8; --band-line:#2C3F57;
  --ph:#FCEFC7; --ph-ink:#6B4300; --focus:#B4532A; --error:#A1261B; --btn:#1F6F66; --btn-hover:#174F49;
  --display:"Fraunces", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --sans:"Public Sans", "Segoe UI", system-ui, -apple-system, Arial, sans-serif;
  --wrap:72rem; --measure:40rem; --r:10px;
  --s1:.25rem; --s2:.5rem; --s3:.75rem; --s4:1rem; --s5:1.5rem; --s6:2rem; --s7:3rem; --s8:4.5rem; --s9:6rem;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0D1624; --surface:#132033; --ink:#E7EDF0; --muted:#A4B2C0; --line:#28394E;
  --teal:#62B5A8; --teal-ink:#8FD0C5; --teal-tint:#14302D;
  --clay:#E38E62; --clay-tint:#3A2418;
  --band:#0A111C; --band-ink:#E7EDF0; --band-muted:#9FB0C0; --band-line:#22334A;
  --ph:#4A3A12; --ph-ink:#F6DFA0; --focus:#E38E62; --error:#F08A7E; --btn:#237A70; --btn-hover:#2C8E82; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0D1624; --surface:#132033; --ink:#E7EDF0; --muted:#A4B2C0; --line:#28394E;
  --teal:#62B5A8; --teal-ink:#8FD0C5; --teal-tint:#14302D;
  --clay:#E38E62; --clay-tint:#3A2418;
  --band:#0A111C; --band-ink:#E7EDF0; --band-muted:#9FB0C0; --band-line:#22334A;
  --ph:#4A3A12; --ph-ink:#F6DFA0; --focus:#E38E62; --error:#F08A7E; --btn:#237A70; --btn-hover:#2C8E82; color-scheme:dark}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:1.0625rem;line-height:1.6;text-rendering:optimizeLegibility}
img,svg{max-width:100%;display:block}
a{color:var(--teal-ink);text-underline-offset:.18em;text-decoration-thickness:1px}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:3px}
h1,h2,h3{font-family:var(--display);font-weight:600;line-height:1.12;letter-spacing:-.012em;text-wrap:balance;margin:0}
h1{font-size:clamp(2.3rem,5.2vw,3.9rem)}
h2{font-size:clamp(1.75rem,3.2vw,2.5rem)}
h3{font-size:1.3rem;line-height:1.25}
p{margin:0}
.skip{position:absolute;left:-999px;top:0;background:var(--surface);padding:var(--s3) var(--s4);z-index:50}
.skip:focus{left:var(--s4)}

.wrap{max-width:var(--wrap);margin:0 auto;padding-left:max(20px,env(safe-area-inset-left,0px));padding-right:max(20px,env(safe-area-inset-right,0px))}
.stack>*+*{margin-top:var(--s4)}
.measure{max-width:var(--measure)}
.eyebrow{font-family:var(--sans);font-size:.78rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--clay)}
.lede{font-size:1.25rem;line-height:1.55;color:var(--muted);max-width:38rem}
.muted{color:var(--muted)}
.small{font-size:.9rem}

/* header */
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:40;background:var(--bg)}
.site-header{position:sticky;top:env(safe-area-inset-top,0px);z-index:30;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;gap:var(--s5);min-height:4.25rem}
.brand{display:flex;align-items:center;gap:.6rem;text-decoration:none;color:var(--ink);font-weight:700;letter-spacing:-.01em;line-height:1.1}
.brand svg{width:2rem;height:2rem;flex:none}
.brand small{display:block;font-weight:500;font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.nav{margin-left:auto;display:flex;align-items:center;gap:var(--s5)}
.nav a{color:var(--ink);text-decoration:none;font-weight:500;font-size:.98rem}
.nav a:hover,.nav a[aria-current="page"]{color:var(--teal-ink);text-decoration:underline}
.menu-btn{display:none;margin-left:auto;background:none;border:1px solid var(--line);color:var(--ink);border-radius:8px;padding:.45rem .8rem;font:inherit;font-weight:600;cursor:pointer}
@media (max-width:900px){
  .menu-btn{display:inline-flex}
  .nav{display:none;position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:stretch;gap:0;background:var(--surface);border-bottom:1px solid var(--line);padding:var(--s3) max(20px,env(safe-area-inset-right,0px)) var(--s5) max(20px,env(safe-area-inset-left,0px))}
  .nav.open{display:flex}
  .nav a{padding:.8rem 0;border-bottom:1px solid var(--line)}
  .nav .btn{margin-top:var(--s4);justify-content:center}
}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:.5rem;background:var(--btn);color:#fff;font-weight:700;font-size:1rem;text-decoration:none;padding:.8rem 1.25rem;border-radius:8px;border:2px solid var(--btn);cursor:pointer;font-family:var(--sans);line-height:1.2;transition:background .15s,border-color .15s}
.btn:hover{background:var(--btn-hover);border-color:var(--btn-hover);color:#fff;text-decoration:none}
.btn:not(.ghost),.btn:not(.ghost):visited{color:#fff}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn.ghost:hover{border-color:var(--ink);background:transparent;color:var(--ink)}
.btn.sm{padding:.55rem .95rem;font-size:.93rem}
.btn.clay{background:var(--clay);border-color:var(--clay)}
.btn.clay:hover{filter:brightness(.92)}
.arrow::after{content:"→";font-weight:400}

/* sections */
section{padding-block:var(--s8)}
.section-head{display:grid;gap:var(--s4);margin-bottom:var(--s7);max-width:44rem}
.band{background:var(--band);color:var(--band-ink)}
.band .muted,.band .lede{color:var(--band-muted)}
.band a{color:var(--band-ink)}
.band .eyebrow{color:#E9A47F}
.surface{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* hero */
.hero{padding-block:var(--s8) var(--s7)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:var(--s7);align-items:center}
.hero h1 em{font-style:italic;font-weight:400;color:var(--teal-ink)}
.hero .actions{display:flex;flex-wrap:wrap;gap:var(--s3);margin-top:var(--s6)}
.hero .stack>*+*{margin-top:var(--s5)}
@media (max-width:900px){.hero-grid{grid-template-columns:minmax(0,1fr)}}
.page-hero{padding-block:var(--s8) var(--s6)}
.page-hero .lede{margin-top:var(--s5)}
.crumbs{font-size:.88rem;color:var(--muted);margin-bottom:var(--s4)}
.crumbs a{color:var(--muted)}

/* the gap diagram */
.gap-figure{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:var(--s5)}
.gap-figure figcaption{font-size:.88rem;color:var(--muted);margin-top:var(--s4)}
.lane{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:.5rem;position:relative}
.lane-label{font-size:.74rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin:var(--s4) 0 .5rem}
.lane-label:first-child{margin-top:0}
.stage{border:1.5px solid var(--line);border-radius:8px;padding:.6rem .55rem;font-size:.82rem;font-weight:600;text-align:center;background:var(--bg);line-height:1.25}
.stage span{display:block;font-weight:400;color:var(--muted);font-size:.74rem;margin-top:.15rem}
.lane.old .stage{border-style:dashed}
.lane.old .stage:nth-child(3){border-color:var(--clay);color:var(--clay)}
.lane.lsi .stage{border-color:var(--teal);background:var(--teal-tint)}
.thread{height:6px;border-radius:3px;background:var(--teal);margin:.6rem 0 0;position:relative}
.thread-label{font-size:.8rem;font-weight:700;color:var(--teal-ink);margin-top:.4rem}
.drops{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:.5rem;margin-top:.45rem}
.drops i{font-style:normal;font-size:.72rem;color:var(--clay);text-align:center;line-height:1.3}

/* grids & cards */
.grid{display:grid;gap:var(--s5)}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:900px){.g3,.g4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){.g2,.g3,.g4{grid-template-columns:minmax(0,1fr)}}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:var(--s5);display:flex;flex-direction:column;gap:var(--s3);min-width:0}
.card h3{font-size:1.2rem}
.card p{color:var(--muted)}
.card .more{margin-top:auto;padding-top:var(--s2);font-weight:600}
.step{display:flex;flex-direction:column;gap:var(--s3);padding-top:var(--s4);border-top:3px solid var(--teal);min-width:0}
.step .k{font-family:var(--display);font-size:1.05rem;font-style:italic;color:var(--clay)}
.step p{color:var(--muted)}
.band .step{border-top-color:#62B5A8}
.band .step p{color:var(--band-muted)}
.band .step .k{color:#E9A47F}

/* compare (old way / LSI way) */
.compare{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--surface)}
.compare>div{padding:var(--s6);min-width:0}
.compare>div+div{border-left:1px solid var(--line);background:var(--teal-tint)}
.compare h3{margin-bottom:var(--s4)}
.compare ul{margin:0;padding:0;list-style:none;display:grid;gap:var(--s3)}
.compare li{padding-left:1.6rem;position:relative}
.compare .old li::before{content:"✕";position:absolute;left:0;color:var(--clay);font-weight:700}
.compare .new li::before{content:"✓";position:absolute;left:0;color:var(--teal);font-weight:700}
@media (max-width:760px){.compare{grid-template-columns:minmax(0,1fr)}.compare>div+div{border-left:0;border-top:1px solid var(--line)}}

/* prose pages */
.prose{max-width:var(--measure)}
.prose>*+*{margin-top:var(--s4)}
.prose h2{margin-top:var(--s7);font-size:clamp(1.6rem,2.8vw,2.1rem)}
.prose h3{margin-top:var(--s6)}
.prose ul,.prose ol{padding-left:1.25rem}
.prose li+li{margin-top:.4rem}
.prose li::marker{color:var(--teal)}
.layout-side{display:grid;grid-template-columns:minmax(0,1fr) 20rem;gap:var(--s8);align-items:start}
.layout-side aside{position:sticky;top:calc(env(safe-area-inset-top,0px) + 5.5rem)}
.layout-side.wide-aside{grid-template-columns:minmax(0,1fr) 24rem}
@media (max-width:980px){.layout-side,.layout-side.wide-aside{grid-template-columns:minmax(0,1fr)}.layout-side aside{position:static}}
.toc{border-left:2px solid var(--line);padding-left:var(--s4);display:grid;gap:.5rem;font-size:.93rem}
.toc a{color:var(--muted);text-decoration:none}.toc a:hover{color:var(--ink)}
.definition{font-family:var(--display);font-size:clamp(1.35rem,2.4vw,1.75rem);line-height:1.35;font-weight:500;border-left:4px solid var(--teal);padding-left:var(--s5);margin:var(--s6) 0}
.note{background:var(--teal-tint);border-radius:var(--r);padding:var(--s4) var(--s5)}
.note.clay{background:var(--clay-tint)}
.fieldnote{border:1px solid var(--line);background:var(--surface);border-radius:var(--r);padding:var(--s5)}
.fieldnote .eyebrow{color:var(--teal-ink)}
.fieldnote p{margin-top:var(--s2)}

/* table */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:var(--surface)}
table{border-collapse:collapse;width:100%;min-width:42rem;font-size:.95rem}
th,td{text-align:left;vertical-align:top;padding:.85rem 1rem;border-bottom:1px solid var(--line)}
thead th{font-size:.8rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);font-weight:700;background:var(--bg)}
tbody th{font-weight:600}
tr:last-child td,tr:last-child th{border-bottom:0}
td.lsi,th.lsi{background:var(--teal-tint)}
.num{font-variant-numeric:tabular-nums}

/* timeline */
.timeline{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--s4);counter-reset:ph}
.timeline li{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:var(--s5);min-width:0;position:relative}
.timeline .when{font-size:.8rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--clay)}
.timeline h3{margin:.4rem 0 .6rem;font-size:1.15rem}
.timeline p{color:var(--muted);font-size:.95rem}
@media (max-width:900px){.timeline{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.timeline{grid-template-columns:minmax(0,1fr)}}
.criteria{counter-reset:c;list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border-top:1px solid var(--line)}
.criteria li{counter-increment:c;padding:var(--s4) var(--s4) var(--s4) 2.6rem;border-bottom:1px solid var(--line);position:relative;font-weight:600;min-width:0}
.criteria li::before{content:counter(c);position:absolute;left:.2rem;top:var(--s4);font-family:var(--display);color:var(--teal);font-size:1.2rem;line-height:1.3}
.criteria li span{display:block;font-weight:400;color:var(--muted);font-size:.9rem}
@media (max-width:900px){.criteria{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.criteria{grid-template-columns:minmax(0,1fr)}}

/* toolkit */
.tool{display:grid;grid-template-columns:4.5rem minmax(0,1fr);gap:var(--s4);padding:var(--s5) 0;border-top:1px solid var(--line)}
.tool:last-child{border-bottom:1px solid var(--line)}
.doc-thumb{width:4.5rem;aspect-ratio:8.5/11;border-radius:4px;background:var(--band);position:relative;overflow:hidden;box-shadow:0 1px 0 var(--line)}
.doc-thumb.land{aspect-ratio:11/8.5;margin-top:.6rem}
.doc-thumb b{position:absolute;left:.4rem;bottom:.4rem;font-family:var(--display);color:#F3F6F5;font-size:1.05rem}
.doc-thumb i{position:absolute;right:.35rem;top:.35rem;width:.9rem;height:.9rem;border-radius:3px;background:#B4532A}
.doc-thumb::before{content:"";position:absolute;left:.4rem;top:.45rem;width:1.6rem;height:2px;background:#62B5A8;box-shadow:0 5px 0 #62B5A8}
.tool h3{font-size:1.2rem}
.tool p{color:var(--muted);margin-top:.35rem}
.formats{display:flex;flex-wrap:wrap;gap:.4rem;margin-top:.6rem}
.pill{font-size:.75rem;font-weight:700;letter-spacing:.06em;border:1px solid var(--line);border-radius:999px;padding:.15rem .6rem;color:var(--muted);background:var(--bg)}

/* forms */
.form-card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:var(--s6);box-shadow:0 18px 40px -28px rgba(19,35,58,.45)}
.form-card h2{font-size:1.6rem}
.form{display:grid;gap:var(--s4);margin-top:var(--s5)}
.form .row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--s4)}
@media (max-width:520px){.form .row{grid-template-columns:minmax(0,1fr)}}
.field{display:grid;gap:.35rem;min-width:0}
.field label{font-weight:600;font-size:.92rem}
.field .opt{font-weight:400;color:var(--muted)}
input[type=text],input[type=email],input[type=tel],select,textarea{width:100%;font:inherit;font-size:1rem;color:var(--ink);background:var(--bg);border:1.5px solid var(--line);border-radius:8px;padding:.65rem .75rem;min-height:2.9rem}
input:focus,select:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 3px var(--teal-tint)}
.field.invalid input,.field.invalid select{border-color:var(--error)}
.err{color:var(--error);font-size:.85rem;font-weight:600;display:none}
.field.invalid .err{display:block}
.check{display:flex;gap:.6rem;align-items:flex-start;font-size:.88rem;color:var(--muted)}
.check input{margin-top:.25rem;width:1.05rem;height:1.05rem;accent-color:var(--teal);flex:none}
.form .btn{justify-content:center;width:100%}
.form-status{font-size:.92rem;font-weight:600}
.form-status.error{color:var(--error)}
.fine{font-size:.82rem;color:var(--muted)}
.hp{position:absolute!important;left:-9999px!important;width:1px;height:1px;overflow:hidden}

/* book */
.book{display:grid;grid-template-columns:12rem minmax(0,1fr);gap:var(--s7);align-items:center}
@media (max-width:760px){.book{grid-template-columns:minmax(0,1fr)}.book .cover{max-width:11rem}}
.cover{aspect-ratio:2/3;border-radius:4px 10px 10px 4px;background:linear-gradient(90deg,rgba(0,0,0,.25) 0 6%,transparent 6% 100%),#1F6F66;color:#F3F6F5;padding:1.2rem 1rem 1rem 1.5rem;display:flex;flex-direction:column;justify-content:space-between;box-shadow:0 22px 40px -22px rgba(0,0,0,.6);max-width:100%}
.cover .t{font-family:var(--display);font-weight:600;font-size:1.45rem;line-height:1.05}
.cover .t sup{font-size:.5em}
.cover .s{font-size:.7rem;line-height:1.35;opacity:.9;margin-top:.6rem}
.cover .a{font-size:.72rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase}
.book-form{margin-top:var(--s5)}
.book-form .form{grid-template-columns:repeat(2,minmax(0,1fr));margin-top:0}
.book-form .form .wide{grid-column:1/-1}
@media (max-width:560px){.book-form .form{grid-template-columns:minmax(0,1fr)}}

/* faq */
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line);padding:var(--s4) 0}
.faq summary{cursor:pointer;font-weight:600;font-size:1.08rem;list-style:none;display:flex;justify-content:space-between;gap:var(--s4)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--display);font-size:1.4rem;line-height:1;color:var(--teal)}
.faq details[open] summary::after{content:"–"}
.faq details>div{margin-top:var(--s3);color:var(--muted);max-width:var(--measure)}

/* firm profile */
.firm{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,.7fr);gap:0;background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.firm-main{padding:var(--s6)}
.firm-side{padding:var(--s6);background:var(--bg);border-left:1px solid var(--line);display:grid;gap:var(--s5);align-content:start}
@media (max-width:860px){.firm{grid-template-columns:minmax(0,1fr)}.firm-side{border-left:0;border-top:1px solid var(--line)}}
.firm-name{display:flex;align-items:baseline;flex-wrap:wrap;gap:.4rem .9rem}
.badge{font-size:.72rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;background:var(--clay-tint);color:var(--clay);padding:.25rem .6rem;border-radius:999px}
.kv{display:grid;gap:.15rem}
.kv dt{font-size:.75rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.kv dd{margin:0;font-weight:500}
.stat{font-family:var(--display);font-size:2.4rem;line-height:1;font-variant-numeric:tabular-nums}
.projects{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 var(--s5)}
.projects li{padding:.6rem 0;border-bottom:1px solid var(--line);min-width:0}
.projects li span{display:block;font-size:.85rem;color:var(--muted)}
@media (max-width:560px){.projects{grid-template-columns:minmax(0,1fr)}}

/* CTA band */
.cta-band .wrap{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:var(--s6);align-items:center}
@media (max-width:760px){.cta-band .wrap{grid-template-columns:minmax(0,1fr)}}
.cta-band h2{font-size:clamp(1.6rem,3vw,2.2rem)}
.cta-band p{margin-top:var(--s3)}

/* tiles motif */
.tiles{width:100%;display:grid;grid-template-columns:repeat(6,1fr);gap:8px;max-width:22rem;margin-left:auto}
.tiles span{aspect-ratio:1;border:1.5px solid var(--line);border-radius:9px}
.tiles span.f{background:var(--teal-tint);border-color:var(--teal)}
.tiles span.c{background:var(--clay);border-color:var(--clay)}
.tiles span.e{border-color:transparent}

/* downloads */
.dl-list{display:grid;gap:var(--s3);margin-top:var(--s5)}
.dl{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:var(--s4);align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:var(--s4) var(--s5)}
.dl h3{font-size:1.1rem}
.dl p{color:var(--muted);font-size:.92rem}
.dl .links{display:flex;flex-wrap:wrap;gap:.5rem;justify-content:flex-end}
@media (max-width:640px){.dl{grid-template-columns:minmax(0,1fr)}.dl .links{justify-content:flex-start}}

/* footer */
.site-footer{background:var(--band);color:var(--band-muted);padding-block:var(--s8) var(--s6);font-size:.93rem}
.site-footer a{color:var(--band-ink);text-decoration:none}
.site-footer a:hover{text-decoration:underline}
.foot-grid{display:grid;grid-template-columns:minmax(0,1.4fr) repeat(2,minmax(0,.8fr));gap:var(--s6)}
@media (max-width:760px){.foot-grid{grid-template-columns:minmax(0,1fr)}}
.foot-grid h4{margin:0 0 var(--s3);color:var(--band-ink);font-size:.8rem;letter-spacing:.12em;text-transform:uppercase}
.foot-grid ul{list-style:none;padding:0;margin:0;display:grid;gap:.45rem}
.site-footer .brand{color:var(--band-ink)}
.site-footer .brand small{color:var(--band-muted)}
.foot-base{border-top:1px solid var(--band-line);margin-top:var(--s7);padding-top:var(--s5);display:flex;flex-wrap:wrap;gap:var(--s3) var(--s6);justify-content:space-between}

/* book cover image */
.cover-img{width:100%;height:auto;max-width:15rem;filter:drop-shadow(0 18px 24px rgba(19,35,58,.28))}
.book{grid-template-columns:15rem minmax(0,1fr)}
@media (max-width:760px){.book{grid-template-columns:minmax(0,1fr)}.book .cover-img{max-width:11rem}}
.cover-img.sm{max-width:7rem}
.cover-img.xs{max-width:5.5rem;flex:none}
.section-head.with-cover{display:flex;gap:var(--s5);align-items:center;max-width:52rem}
.section-head.with-cover .stack{min-width:0}
.mini-cover{flex:none}
@media (max-width:560px){.section-head.with-cover{flex-direction:column;align-items:flex-start}}
.book-card{flex-direction:row;align-items:center;gap:var(--s5)}
textarea{resize:vertical;min-height:5.5rem;line-height:1.5}
#book .book{align-items:start}

/* ==========================================================================
   Editorial layer (v3)
   Concept: the site reads like the documents districts actually use (RFQs,
   scorecards, floor plans). Rules and whitespace instead of boxes, square
   corners, monospace for labels/specs/annotations, one label per page.
   ========================================================================== */
@font-face{font-family:"IBM Plex Mono";font-weight:400;font-display:swap;src:url("../fonts/plex-mono-latin-400-normal.woff2") format("woff2")}
@font-face{font-family:"IBM Plex Mono";font-weight:500;font-display:swap;src:url("../fonts/plex-mono-latin-500-normal.woff2") format("woff2")}
:root{--mono:"IBM Plex Mono",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;--r:2px;--rule:var(--line);--grid-line:rgba(174,187,200,.10);--grid-major:rgba(174,187,200,.20)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--grid-line:rgba(159,176,192,.08);--grid-major:rgba(159,176,192,.16)}}
:root[data-theme="dark"]{--grid-line:rgba(159,176,192,.08);--grid-major:rgba(159,176,192,.16)}

/* labels & small type */
.eyebrow{font-family:var(--mono);font-size:.76rem;font-weight:500;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.band .eyebrow{color:var(--band-muted)}
.spec{font-family:var(--mono);font-size:.78rem;letter-spacing:.02em;color:var(--muted);font-variant-numeric:tabular-nums}
.brand small{font-family:var(--mono);letter-spacing:.06em;font-weight:400}
.crumbs{font-family:var(--mono);font-size:.78rem}
thead th,.lane-label,.foot-grid h4,.kv dt,.timeline .when{font-family:var(--mono);font-weight:500;letter-spacing:.05em}

/* headline: no colored italic accent */
.hero h1 em{font-style:inherit;font-weight:inherit;color:inherit}

/* buttons: square, secondary becomes a text link */
.btn{border-radius:var(--r)}
.btn.ghost{border-color:transparent;padding-inline:.25rem;text-decoration:underline;text-underline-offset:.25em;text-decoration-thickness:1px}
.btn.ghost:hover{border-color:transparent;text-decoration-thickness:2px}
.menu-btn,input[type=text],input[type=email],input[type=tel],select,textarea{border-radius:var(--r)}
.pill{border-radius:var(--r);font-family:var(--mono);font-weight:400;letter-spacing:0;background:transparent}

/* boxes become ruled blocks */
.card{background:transparent;border:0;border-top:1px solid var(--rule);border-radius:0;padding:var(--s5) 0 0}
.timeline li{background:transparent;border:0;border-top:1px solid var(--ink);border-radius:0;padding:var(--s4) 0 0}
.dl{background:transparent;border:0;border-top:1px solid var(--rule);border-radius:0;padding:var(--s4) 0}
.dl-list{gap:0;border-bottom:1px solid var(--rule)}
.form-card{border-radius:var(--r);box-shadow:none;border-top:3px solid var(--teal)}
.firm,.table-wrap,.note,.fieldnote,.compare{border-radius:var(--r)}
.section-head{margin-bottom:var(--s6)}
.surface{background:var(--surface)}

/* Fig. 1: the handoff diagram, annotated like a marked-up plan */
.gap-figure{background:transparent;border:0;border-top:1px solid var(--ink);border-radius:0;padding:var(--s4) 0 0;margin:0}
.fig-no{display:flex;justify-content:space-between;gap:var(--s4);font-family:var(--mono);font-size:.74rem;color:var(--muted);margin-bottom:var(--s5)}
.lane{list-style:none;margin:0;padding:0;gap:0}
.stage{border:0;border-left:1px solid var(--line);border-radius:0;background:transparent;text-align:left;padding:.15rem .6rem .5rem;font-family:var(--display);font-size:1.02rem;font-weight:600}
.lane .stage:first-child{border-left:0;padding-left:0}
.stage span{font-family:var(--mono);font-size:.7rem;letter-spacing:.02em;margin-top:.2rem}
.lane.old .stage{border-style:solid;color:var(--muted)}
.lane.old .stage:nth-child(3){border-color:var(--line);color:var(--muted)}
.lane.lsi .stage{background:transparent;border-color:var(--line);color:var(--ink)}
.drops{gap:0;margin-top:.1rem;list-style:none;padding:0}
.drops i,.drops li{font-family:var(--mono);font-style:normal;font-size:.7rem;line-height:1.35;color:var(--clay);text-align:left;padding:.85rem .6rem 0;position:relative}
.drops li:first-child{padding-left:0}
.drops li::before{content:"";position:absolute;top:.1rem;left:.6rem;width:1px;height:.6rem;background:var(--clay)}
.drops li:first-child::before{left:0}
.drops li::after{content:"";position:absolute;top:.1rem;left:calc(.6rem - 3px);width:7px;height:1px;background:var(--clay)}
.drops li:first-child::after{left:-3px}
.lane-label{margin:var(--s6) 0 .6rem;font-size:.72rem}
.thread{height:2px;border-radius:0;background:var(--teal);margin:.35rem 0 0;position:relative}
.thread::before,.thread::after{content:"";position:absolute;top:-4px;width:10px;height:10px;border-radius:50%;background:var(--teal)}
.thread::before{left:0}.thread::after{right:0}
.thread-label{font-family:var(--mono);font-size:.74rem;font-weight:400;color:var(--teal-ink);margin-top:.55rem}
.gap-figure figcaption{font-size:.9rem;margin-top:var(--s5);padding-top:var(--s3);border-top:1px solid var(--line)}

/* comparison ledger */
.ledger{width:100%;min-width:0;border-collapse:collapse;font-size:1rem;border-top:1px solid var(--ink)}
.ledger th,.ledger td{padding:1rem 1rem 1rem 0;border-bottom:1px solid var(--line);vertical-align:top;text-align:left}
.ledger thead th{background:transparent;color:var(--muted);font-size:.74rem;text-transform:uppercase;padding-block:.7rem}
.ledger thead th.lsi{color:var(--teal-ink)}
.ledger tbody th{font-family:var(--mono);font-size:.8rem;font-weight:400;color:var(--muted);width:22%;padding-top:1.2rem}
.ledger td.old{color:var(--muted);width:36%}
.ledger td.lsi{background:transparent;color:var(--ink);font-weight:500;border-left:2px solid var(--teal);padding-left:1rem}
.ledger thead th.lsi{padding-left:1rem;border-left:2px solid var(--teal)}
@media (max-width:700px){
  .ledger thead{display:none}
  .ledger,.ledger tbody,.ledger tr,.ledger th,.ledger td{display:block;width:auto}
  .ledger tr{padding:var(--s4) 0;border-bottom:1px solid var(--line)}
  .ledger th,.ledger td{border:0;padding:0}
  .ledger tbody th{padding:0 0 .5rem}
  .ledger td.old::before,.ledger td.lsi::before{display:block;font-family:var(--mono);font-size:.7rem;text-transform:uppercase;letter-spacing:.05em;margin-bottom:.15rem}
  .ledger td.old::before{content:"The usual way";color:var(--muted)}
  .ledger td.lsi{margin-top:.75rem;padding-left:.8rem}
  .ledger td.lsi::before{content:"With an LSI";color:var(--teal-ink)}
}

/* blueprint band */
.band.blueprint{background-color:var(--band);background-image:
  linear-gradient(var(--grid-major) 1px,transparent 1px),linear-gradient(90deg,var(--grid-major) 1px,transparent 1px),
  linear-gradient(var(--grid-line) 1px,transparent 1px),linear-gradient(90deg,var(--grid-line) 1px,transparent 1px);
  background-size:160px 160px,160px 160px,32px 32px,32px 32px;background-position:-1px -1px}
.phases{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border-top:1px solid var(--band-line)}
.phases .step{border-top:0;padding:var(--s5) var(--s5) 0 0}
.phases .step+.step{border-left:1px solid var(--band-line);padding-left:var(--s5)}
.phases .k{font-family:var(--mono);font-style:normal;font-size:.76rem;letter-spacing:.06em;text-transform:uppercase;color:#E9A47F}
@media (max-width:860px){.phases{grid-template-columns:minmax(0,1fr)}.phases .step+.step{border-left:0;border-top:1px solid var(--band-line);padding-left:0;margin-top:var(--s5)}}

/* toolkit covers */
.tool{grid-template-columns:5.5rem minmax(0,1fr);align-items:start}
.cover-thumb{width:5.5rem;height:auto;border:1px solid var(--line);box-shadow:0 10px 18px -14px rgba(19,35,58,.6)}
.cover-thumb.land{margin-top:.9rem}
.tool .spec{margin-top:.5rem}

/* floor plan (Find an LSI) */
.plan{width:100%;max-width:30rem;margin-left:auto;color:var(--ink)}
.plan .wall{fill:none;stroke:var(--ink);stroke-width:4}
.plan .win{stroke:var(--bg);stroke-width:3}
.plan .win2{stroke:var(--ink);stroke-width:1}
.plan .door{fill:none;stroke:var(--ink);stroke-width:1}
.plan .zone{fill:var(--teal-tint);stroke:var(--teal);stroke-width:1;stroke-dasharray:4 3}
.plan .zone.c{fill:var(--clay-tint);stroke:var(--clay)}
.plan .furn{fill:var(--surface);stroke:var(--ink);stroke-width:1}
.plan .chair{fill:var(--ink)}
.plan .lbl{font-family:var(--mono);font-size:8.5px;fill:var(--ink)}
.plan .lbl.m{fill:var(--muted)}
.plan .dim{stroke:var(--muted);stroke-width:.75}
.plan .wb{stroke:var(--teal);stroke-width:3}
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
@media (max-width:700px){.ledger tbody th,.ledger td.old{width:auto}}
.drops li::after{top:-.15rem;left:calc(.6rem - 2.5px);width:6px;height:6px;border-radius:50%}
.drops li:first-child::after{left:-2.5px}
@media (max-width:700px){.ledger tbody th{font-family:var(--display);font-size:1.05rem;font-weight:600;color:var(--ink);padding-bottom:.6rem}}