/* Shared stylesheet — Museum AI · Museums 101 · Designing Museum Experiences (Museum Planning LLC) */
:root{
  --bg:#0D1117;--bg-2:#141B26;--card:#19212E;--card-2:#1E2836;--line:rgba(255,255,255,.08);
  --gold:#C9A84C;--gold-lt:#DFC27A;--rust:#C0391B;
  --text:#F5F1E8;--dim:rgba(245,241,232,.68);--muted:rgba(245,241,232,.44);
  --serif:'Playfair Display',Georgia,serif;--mono:'DM Mono',ui-monospace,monospace;--sans:'DM Sans',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:var(--sans);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px}
.skip{position:absolute;left:-999px;top:0;background:var(--gold);color:var(--bg);padding:8px 14px;z-index:999}
.skip:focus{left:12px;top:12px}
.wrap{max-width:1120px;margin:0 auto;padding:0 40px}
.a{color:var(--gold);border-bottom:1px solid rgba(201,168,76,.35);transition:border-color .15s}
.a:hover{border-color:var(--gold)}

/* NAV */
header.nav{position:sticky;top:0;z-index:50;background:rgba(13,17,23,.94);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.mark{width:36px;height:36px;border-radius:50%;background:var(--rust);display:flex;align-items:center;justify-content:center;flex-shrink:0;
  font-family:var(--sans);font-size:7.5px;font-weight:500;line-height:1.1;color:#fff;text-align:center}
.brand-name{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--dim)}
.brand-name b{color:var(--gold);font-weight:500}
.links{display:flex;list-style:none;gap:2px}
.links a{font-family:var(--mono);font-size:10.5px;letter-spacing:.13em;text-transform:uppercase;color:var(--muted);padding:8px 10px;transition:color .15s;white-space:nowrap}
.links a:hover,.links a[aria-current=page]{color:var(--gold)}
.menu-btn{display:none;background:none;border:1px solid var(--line);color:var(--dim);font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;padding:8px 12px;cursor:pointer}

/* TYPE */
.eyebrow{font-family:var(--mono);font-size:10px;letter-spacing:.24em;text-transform:uppercase;color:var(--gold);display:flex;align-items:center;gap:12px;margin-bottom:18px}
.eyebrow::before{content:'';width:26px;height:1px;background:var(--gold);opacity:.6;flex-shrink:0}
h1,h2,h3{font-family:var(--serif);font-weight:700;line-height:1.1;letter-spacing:-.01em}
h1{font-size:clamp(38px,6vw,72px)}
h2{font-size:clamp(26px,3.4vw,40px);margin-bottom:16px}
h3{font-size:20px;margin-bottom:8px}
h1 em,h2 em,h3 em{font-style:italic;color:var(--gold)}
.lead{font-family:var(--serif);font-style:italic;font-size:clamp(18px,2vw,22px);color:var(--dim);max-width:660px;line-height:1.55}
p{color:var(--dim)}
.prose p{margin-bottom:16px;max-width:760px}
.prose h2{margin-top:48px}
.prose h3{margin-top:28px}
.prose ul,.prose ol{list-style:none;margin:0 0 20px;max-width:760px}
.prose li{position:relative;padding:9px 0 9px 26px;border-bottom:1px solid var(--line);color:var(--dim)}
.prose li::before{content:'→';position:absolute;left:0;color:var(--gold);font-family:var(--mono);font-size:12px;top:11px}
.prose ol{counter-reset:n}
.prose ol li{counter-increment:n;padding-left:36px}
.prose ol li::before{content:counter(n,decimal-leading-zero);font-size:11px;top:12px}
.prose li b,.prose p b{color:var(--text);font-weight:500}
.prose img{border:1px solid var(--line);margin:8px 0 24px}

/* SECTIONS */
.hero{position:relative;padding:96px 0 72px;overflow:hidden;border-bottom:1px solid var(--line)}
.hero::before{content:'';position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(ellipse 50% 60% at 75% 30%,rgba(201,168,76,.07),transparent 65%),radial-gradient(ellipse 35% 50% at 5% 90%,rgba(192,57,27,.06),transparent 60%)}
.hero .wrap{position:relative}
.hero .lead{margin-top:22px}
.hero-split{display:grid;grid-template-columns:1fr 300px;gap:72px;align-items:center}
.page-head{padding:72px 0 48px;border-bottom:1px solid var(--line)}
.page-head .lead{margin-top:16px}
.back{display:inline-block;font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:24px}
.back:hover{color:var(--gold)}
.sec{padding:80px 0;border-bottom:1px solid var(--line)}
.sec.alt{background:var(--bg-2)}
.sec-intro{max-width:660px;margin-bottom:36px}
.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:32px}
.btn{display:inline-block;font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;padding:13px 24px;border-radius:2px;transition:background .18s,color .18s,border-color .18s;cursor:pointer;border:none}
.btn-gold{background:var(--gold);color:var(--bg)}
.btn-gold:hover{background:var(--gold-lt)}
.btn-ghost{border:1px solid rgba(255,255,255,.22);color:var(--dim);background:none}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold)}
.note{font-family:var(--mono);font-size:10.5px;letter-spacing:.06em;color:var(--muted);margin-top:18px}

/* STATS */
.stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);margin-top:64px}
.stat{padding:22px 24px 0 0}
.stat-n{font-family:var(--serif);font-size:30px;font-weight:700;color:var(--gold);line-height:1}
.stat-n.sm{font-family:var(--mono);font-size:13px;font-weight:400;color:var(--dim);line-height:1.45}
.stat-l{font-family:var(--mono);font-size:9.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin-top:6px}

/* BOOK COVER (drawn, no image needed) */
.book{background:var(--card);border:1px solid var(--line);aspect-ratio:2/3;display:flex;flex-direction:column;position:relative;overflow:hidden;box-shadow:18px 18px 48px rgba(0,0,0,.35)}
.book::before{content:'';position:absolute;top:0;left:0;width:7px;height:100%;background:linear-gradient(180deg,var(--gold),#9A7828)}
.book::after{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 50% at 40% 25%,rgba(201,168,76,.08),transparent 65%);pointer-events:none}
.book-body{flex:1;display:flex;flex-direction:column;justify-content:center;padding:32px 28px 32px 36px;position:relative;z-index:1}
.book-ed{font-family:var(--mono);font-size:8.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--gold);margin-bottom:22px}
.book-t{font-family:var(--serif);font-size:34px;font-weight:900;line-height:1;color:var(--text)}
.book-t em{display:block;font-style:italic;color:var(--gold)}
.book-a{font-family:var(--mono);font-size:9.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-top:22px}
.book-foot{padding:12px 20px 12px 28px;background:rgba(201,168,76,.08);border-top:1px solid rgba(201,168,76,.18);font-family:var(--mono);font-size:9px;letter-spacing:.14em;text-transform:uppercase;color:rgba(201,168,76,.75);position:relative;z-index:1}
.badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.badge{font-family:var(--mono);font-size:9px;letter-spacing:.12em;text-transform:uppercase;padding:4px 10px;border:1px solid var(--line);color:var(--muted)}
.badge.hi{color:var(--gold);border-color:rgba(201,168,76,.3);background:rgba(201,168,76,.08)}

/* CARDS */
.grid{display:grid;gap:1px;background:var(--line);border:1px solid var(--line)}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--card);padding:28px 24px;display:flex;flex-direction:column;gap:8px;transition:background .18s}
a.card:hover{background:var(--card-2)}
.card .num{font-family:var(--mono);font-size:10px;letter-spacing:.16em;color:var(--gold)}
.card p{font-size:14px}
.card p.grow{flex:1}
.pcard{background:var(--card);display:flex;flex-direction:column;transition:background .18s}
.pcard:hover{background:var(--card-2)}
.pcard .ph{aspect-ratio:4/3;overflow:hidden;background:#0a0e14}
.pcard img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.pcard:hover img{transform:scale(1.03)}
.pcard .body{padding:22px 22px 26px;display:flex;flex-direction:column;gap:8px;flex:1}
.kind{font-family:var(--mono);font-size:9.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--gold)}
.pcard h3{font-size:19px;margin:0}
.pcard p{font-size:14px;flex:1}
.more{font-family:var(--mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--gold);margin-top:6px}

/* STEPS */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin-top:32px}
.steps.s4{grid-template-columns:repeat(4,1fr)}
.steps.s3{grid-template-columns:repeat(3,1fr)}
.step{background:var(--card);padding:24px 20px}
.step .num{font-family:var(--mono);font-size:10px;letter-spacing:.16em;color:var(--gold);margin-bottom:10px}
.step h3{font-size:17px}
.step p{font-size:13.5px}
.steps.full{grid-template-columns:1fr}
.steps.full .step{display:grid;grid-template-columns:90px 1fr;gap:20px;padding:28px}
.steps.full .step .num{font-size:12px}

/* GALLERY */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:32px 0}
.gallery a{display:block;aspect-ratio:1/1;overflow:hidden;background:#0a0e14}
.gallery img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.gallery a:hover img{transform:scale(1.04)}
.gallery.wide a{aspect-ratio:4/3}
.cap{font-family:var(--mono);font-size:10px;letter-spacing:.08em;color:var(--muted);margin-top:-16px;margin-bottom:28px}

/* SPLIT / QUOTE / FACTS */
.split{display:grid;grid-template-columns:1.1fr 1fr;gap:64px;align-items:start}
.split.r{grid-template-columns:1fr 340px}
.split.l{grid-template-columns:300px 1fr}
.quote{border-left:3px solid var(--gold);background:var(--card);padding:22px 26px;margin:28px 0}
.quote p{font-family:var(--serif);font-style:italic;font-size:18px;color:var(--text);line-height:1.55;margin:0}
.quote cite{display:block;margin-top:10px;font-family:var(--mono);font-style:normal;font-size:9.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--gold)}
.pull{padding:72px 0;text-align:center;border-bottom:1px solid var(--line);background:var(--bg-2)}
.pull p{font-family:var(--serif);font-style:italic;font-size:clamp(18px,2.3vw,26px);color:var(--text);max-width:820px;margin:0 auto;line-height:1.5}
.pull p em{color:var(--gold);font-style:normal}
.pull cite{display:block;margin-top:18px;font-family:var(--mono);font-style:normal;font-size:9.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--muted)}
.facts{border:1px solid var(--line)}
.fact{display:flex;justify-content:space-between;gap:16px;padding:14px 18px;border-bottom:1px solid var(--line);font-size:14px}
.fact:last-child{border-bottom:none}
.fact span:first-child{font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);padding-top:2px;flex-shrink:0}
.fact span:last-child{color:var(--text);text-align:right}

/* SCORE BARS */
.score{display:flex;align-items:baseline;gap:6px}
.score-n{font-family:var(--serif);font-size:80px;font-weight:900;color:var(--gold);line-height:1}
.score-d{font-family:var(--serif);font-size:22px;color:var(--muted)}
.bars{display:flex;flex-direction:column;gap:12px}
.bar-h{display:flex;justify-content:space-between;font-family:var(--mono);font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--dim);margin-bottom:5px}
.bar-h b{color:var(--gold);font-weight:400}
.bar{height:4px;background:rgba(255,255,255,.07);border-radius:2px;overflow:hidden}
.bar i{display:block;height:100%;background:linear-gradient(90deg,var(--gold),var(--gold-lt));border-radius:2px}

/* TIMELINE */
.tl{border-left:1px solid var(--line);margin:32px 0 0 8px}
.tl-item{position:relative;padding:0 0 28px 32px}
.tl-item::before{content:'';position:absolute;left:-5px;top:7px;width:9px;height:9px;border-radius:50%;background:var(--gold)}
.tl-y{font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--gold)}
.tl-item h3{font-size:18px;margin:4px 0 4px}
.tl-item p{font-size:14.5px}

/* FORM */
.form{display:flex;flex-direction:column;gap:16px;max-width:560px}
.form label{font-family:var(--mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);display:block;margin-bottom:6px}
.form input,.form textarea{width:100%;background:var(--card);border:1px solid rgba(255,255,255,.16);border-radius:2px;padding:12px 14px;font:inherit;font-size:15px;color:var(--text);outline:none;transition:border-color .18s}
.form input:focus,.form textarea:focus{border-color:var(--gold)}
.form textarea{min-height:150px;resize:vertical}
.form .btn{align-self:flex-start}
.ok{display:none;border-left:3px solid var(--gold);background:var(--card);padding:16px 20px;color:var(--text)}

/* LISTS: posts, resources, glossary */
.post-row{display:grid;grid-template-columns:140px 1fr auto;gap:24px;align-items:baseline;padding:24px 0;border-bottom:1px solid var(--line)}
.post-row .d{font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;color:var(--muted)}
.post-row h3{font-size:22px;margin:0}
.post-row:hover h3{color:var(--gold)}
.res-group{margin-bottom:40px}
.res-group h3{font-size:18px;padding-bottom:10px;border-bottom:1px solid var(--line);margin-bottom:0}
.res{display:flex;justify-content:space-between;gap:20px;padding:12px 0;border-bottom:1px solid var(--line);font-size:15px}
.res:hover .res-t{color:var(--gold)}
.res-t{color:var(--text);transition:color .15s}
.res-d{display:block;font-size:13.5px;color:var(--muted);margin-top:2px}
.res-go{font-family:var(--mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--gold);white-space:nowrap;padding-top:3px}
.az{display:flex;flex-wrap:wrap;gap:4px;margin-bottom:40px;position:sticky;top:64px;background:var(--bg);padding:12px 0;z-index:5;border-bottom:1px solid var(--line)}
.az a{font-family:var(--mono);font-size:12px;width:34px;height:34px;display:flex;align-items:center;justify-content:center;border:1px solid var(--line);color:var(--dim)}
.az a:hover{border-color:var(--gold);color:var(--gold)}
.gl-letter{font-family:var(--serif);font-size:40px;color:var(--gold);margin:40px 0 8px;scroll-margin-top:140px}
.gl{display:grid;grid-template-columns:260px 1fr;gap:24px;padding:14px 0;border-bottom:1px solid var(--line)}
.gl dt{color:var(--text);font-weight:500}
.gl dd{color:var(--dim)}
.table{width:100%;border-collapse:collapse;margin:8px 0 28px;font-size:14px}
.table th{text-align:left;font-family:var(--mono);font-size:9.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);font-weight:400;padding:10px 14px;border-bottom:1px solid var(--line);background:var(--card)}
.table td{padding:12px 14px;border-bottom:1px solid var(--line);color:var(--dim);vertical-align:top}
.table td:first-child{color:var(--text)}

/* CTA + FOOTER */
.cta{padding:88px 0;text-align:center;background:var(--bg-2);border-bottom:1px solid var(--line)}
.cta .eyebrow{justify-content:center}
.cta .lead{margin:16px auto 0}
.cta .actions{justify-content:center}
footer{padding:48px 0 32px}
.f-top{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr 1fr;gap:32px;padding-bottom:32px;border-bottom:1px solid var(--line)}
.f-h{font-family:var(--mono);font-size:9.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--gold);margin-bottom:12px}
.f-list{list-style:none}
.f-list a{display:block;font-size:14px;color:var(--muted);padding:3px 0;transition:color .15s}
.f-list a:hover{color:var(--text)}
.f-about{font-size:14px;color:var(--muted);margin-top:14px;max-width:300px}
.f-bot{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;padding-top:20px;font-family:var(--mono);font-size:10px;letter-spacing:.06em;color:var(--muted)}

/* LIGHTBOX */
.lb{position:fixed;inset:0;background:rgba(5,7,10,.94);display:none;align-items:center;justify-content:center;z-index:200;padding:24px;cursor:zoom-out}
.lb.on{display:flex}
.lb img{max-height:90vh;max-width:100%;object-fit:contain}

/* RESPONSIVE */
@media(max-width:1020px){
  .menu-btn{display:block}
  .links{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;background:var(--bg);border-bottom:1px solid var(--line);padding:8px 40px 16px}
  .links.open{display:flex}
  .links a{display:block;padding:12px 0;font-size:12px}
}
@media(max-width:900px){
  .g3,.g4{grid-template-columns:repeat(2,1fr)}
  .steps,.steps.s4{grid-template-columns:1fr 1fr}
  .split,.split.r,.split.l,.hero-split{grid-template-columns:1fr;gap:40px}
  .hero-split .book{max-width:280px}
  .f-top{grid-template-columns:1fr 1fr}
  .gl{grid-template-columns:1fr;gap:4px}
}
@media(max-width:720px){
  .wrap{padding:0 16px}
  .links{padding:8px 16px 16px}
  .bn-x{display:none}
  .hero{padding:64px 0 48px}
  .stats{grid-template-columns:1fr 1fr}
  .g2,.g3,.g4,.steps,.steps.s4,.steps.s3{grid-template-columns:1fr}
  .steps.full .step{grid-template-columns:1fr;gap:6px}
  .gallery{grid-template-columns:1fr 1fr}
  .sec{padding:56px 0}
  .post-row{grid-template-columns:1fr;gap:6px}
  .f-top{grid-template-columns:1fr}
  .fact{flex-direction:column;gap:4px}
  .fact span:last-child{text-align:left}
  .res{flex-direction:column;gap:4px}
  .table{display:block;overflow-x:auto}
  .score-n{font-size:64px}
  .az a{width:30px;height:30px}
}