:root{
  --bg:#14110f;--bg2:#1c1814;--wall:#211b16;--ink:#f3ead9;--muted:#bfb29c;--dim:#8f846f;
  --gold:#d8b46a;--gold2:#f3dc9c;--gold3:#9c7a35;--up:#9fd3a0;--down:#e59a85;--flat:#cdbf9f;--line:rgba(216,180,106,.22);
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,"Book Antiqua",Georgia,"Times New Roman",serif;
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.65 var(--sans);overflow-x:hidden}
img,svg{max-width:100%;display:block}
a{color:var(--gold2)}
a:hover{color:#fff}
h1,h2,h3{font-family:var(--serif);font-weight:600;line-height:1.15;margin:0 0 .5em;letter-spacing:-.01em}
h1{font-size:clamp(2.2rem,5.4vw,3.9rem)}
h2{font-size:clamp(1.8rem,3.6vw,2.7rem)}
h3{font-size:1.25rem}
p{margin:0 0 1em}
cite{font-style:italic}
.wrap{max-width:1180px;margin:0 auto;padding:0 22px}
.narrow{max-width:820px}
.center{text-align:center}
.skip{position:absolute;left:-999px;top:0;background:var(--gold);color:#000;padding:8px 12px;z-index:100}
.skip:focus{left:8px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.eyebrow{font:600 .78rem/1.2 var(--sans);letter-spacing:.18em;text-transform:uppercase;color:var(--gold);margin-bottom:1em}
.gild{background:linear-gradient(100deg,var(--gold2),var(--gold) 45%,#fff3cf 60%,var(--gold3));-webkit-background-clip:text;background-clip:text;color:transparent}
.fine{font-size:.85rem;color:var(--dim)}
.btn{display:inline-block;text-decoration:none;font-weight:600;color:#1a140c;background:linear-gradient(180deg,var(--gold2),var(--gold));padding:.8em 1.4em;border-radius:999px;border:0;cursor:pointer;font-size:1rem;box-shadow:0 6px 24px rgba(216,180,106,.25)}
.btn:hover{color:#000;filter:brightness(1.07)}
.btn.ghost{background:transparent;color:var(--gold2);box-shadow:inset 0 0 0 1.5px var(--gold)}
.btn.ghost:hover{color:#fff}
.btn.sm{padding:.5em 1.05em;font-size:.9rem}
.btn.big{font-size:1.1rem;padding:1em 1.8em}
:focus-visible{outline:2px solid var(--gold2);outline-offset:3px}

/* header */
.top{position:sticky;top:0;z-index:20;background:rgba(20,17,15,.86);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font:600 1.2rem var(--serif);white-space:nowrap}
.brand em{color:var(--gold);font-style:italic}
.nav ul{display:flex;gap:22px;list-style:none;margin:0 0 0 auto;padding:0}
.nav ul a{color:var(--muted);text-decoration:none;font-size:.95rem}
.nav ul a:hover{color:var(--ink)}

/* hero */
.hero{padding:72px 0 64px;background:radial-gradient(900px 520px at 78% 30%,rgba(216,180,106,.16),transparent 60%),radial-gradient(700px 500px at 0% 100%,rgba(120,80,160,.14),transparent 60%)}
.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center}
.lede{font-size:1.15rem;color:var(--muted);max-width:36em}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin:1.6em 0 1.2em}
.mini-gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;align-items:end}
.mini{margin:0;text-align:center}
.mini.m1{transform:translateY(22px)}
.mini figcaption{font:600 .95rem var(--serif);margin-top:10px;color:var(--ink)}
.mini figcaption small,.plaque small{display:block;font:500 .72rem var(--sans);letter-spacing:.12em;text-transform:uppercase;color:var(--dim);margin-top:2px}

/* gilded frame */
.frame{position:relative;padding:10px;border-radius:4px;background:linear-gradient(135deg,#f6e1a6,#a77e33 22%,#f1d58c 45%,#8a6526 70%,#e8c879);box-shadow:0 18px 40px rgba(0,0,0,.55),inset 0 0 0 2px rgba(60,40,10,.6)}
.frame::before{content:"";position:absolute;inset:6px;border:1px solid rgba(60,40,10,.55);border-radius:2px;pointer-events:none}
.canvas{position:relative;aspect-ratio:200/260;overflow:hidden;border-radius:1px;box-shadow:inset 0 0 0 3px #2a1d0d;transition:filter .6s ease;background:#221d19}
.canvas svg{width:100%;height:100%}
.canvas svg *{transition:all .6s ease}

/* idea */
.idea{padding:88px 0;background:var(--bg2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.story{font:italic 1.3rem/1.6 var(--serif);color:var(--ink);border-left:2px solid var(--gold);padding-left:1em}
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:2.2em}
.pillars div{padding:20px;border:1px solid var(--line);border-radius:10px;background:rgba(255,255,255,.02)}
.pillars p{color:var(--muted);font-size:.95rem;margin:0}

/* demo */
.demo{padding:88px 0;background:radial-gradient(1200px 600px at 50% 0%,rgba(216,180,106,.08),transparent 60%),var(--wall)}
.demo-head{max-width:760px}
.demo-head p{color:var(--muted)}
.badge{display:inline-block;color:#1a140c !important;background:var(--gold2);font:700 .78rem var(--sans);letter-spacing:.06em;text-transform:uppercase;padding:.45em .9em;border-radius:4px}
.controls{display:grid;grid-template-columns:1fr 320px;gap:22px 32px;align-items:end;margin:26px 0 8px;padding:20px;border:1px solid var(--line);border-radius:12px;background:rgba(0,0,0,.18)}
.choices{border:0;margin:0;padding:0;min-width:0}
.choices legend{font-size:.85rem;color:var(--dim);margin-bottom:8px;padding:0}
.chip-row{display:flex;flex-wrap:wrap;gap:8px}
.chip{font:600 .92rem var(--sans);color:var(--ink);background:transparent;border:1.5px solid var(--line);border-radius:999px;padding:.5em 1em;cursor:pointer}
.chip:hover{border-color:var(--gold)}
.chip[aria-pressed="true"]{background:var(--gold);color:#1a140c;border-color:var(--gold)}
.custom{grid-column:1/-1;display:grid;grid-template-columns:2fr 1fr 1fr auto;gap:10px;align-items:end}
.custom[hidden]{display:none}
.custom label{display:flex;flex-direction:column;font-size:.8rem;color:var(--dim);gap:4px}
.custom input{font:inherit;font-size:.95rem;color:var(--ink);background:#0f0d0b;border:1px solid var(--line);border-radius:8px;padding:.55em .7em;min-width:0}
.years{min-width:0}
.year-label{display:block;font-size:.85rem;color:var(--dim);margin-bottom:6px}
.year-label output{font:600 1.15rem var(--serif);color:var(--gold2);margin-left:4px}
input[type=range]{width:100%;accent-color:var(--gold);height:28px;margin:0}
.ticks{display:flex;justify-content:space-between;font-size:.75rem;color:var(--dim)}
.question{font-size:clamp(1.3rem,2.6vw,1.8rem);text-align:center;margin:34px 0 26px;font-style:italic;color:var(--gold2)}
.gallery{display:grid;gap:28px;grid-template-columns:repeat(3,minmax(0,1fr))}
.gallery.n2{grid-template-columns:repeat(2,minmax(0,360px));justify-content:center;gap:48px}
.card{display:flex;flex-direction:column;min-width:0}
.card .frame{max-width:300px;margin:0 auto;width:100%}
.swipe{display:none;text-align:center;font-size:.8rem;color:var(--dim);margin:-12px 0 10px}
.plaque{margin:14px auto 0;padding:6px 16px;border-radius:3px;background:linear-gradient(180deg,#3a2f22,#251e17);box-shadow:inset 0 0 0 1px rgba(216,180,106,.45);text-align:center;font:600 1.08rem var(--serif);color:var(--ink)}
.caption{font:italic 1.02rem/1.5 var(--serif);color:var(--muted);text-align:center;margin:12px 0 14px;min-height:3em}
.notes{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.notes li{display:grid;grid-template-columns:104px 18px 1fr;gap:6px;padding:8px 0;border-bottom:1px solid var(--line);font-size:.9rem;line-height:1.4;align-items:baseline}
.dim{color:var(--dim);font-size:.78rem;letter-spacing:.06em;text-transform:uppercase}
.arrow{font-size:.75rem}
.t-up .arrow{color:var(--up)}.t-down .arrow{color:var(--down)}.t-flat .arrow{color:var(--flat)}.t-q .arrow{color:var(--gold)}
.assume{font-size:.78rem;color:var(--dim);margin:10px 0 0}
.demo-fine{margin-top:34px;max-width:760px}

/* how */
.how{padding:88px 0}
.steps{list-style:none;margin:2em 0 0;padding:0;display:grid;grid-template-columns:repeat(5,1fr);gap:18px;counter-reset:s}
.steps li{position:relative;padding:22px 18px;border:1px solid var(--line);border-radius:12px;background:var(--bg2)}
.steps .n{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;background:linear-gradient(180deg,var(--gold2),var(--gold));color:#1a140c;font:700 .95rem var(--serif);margin-bottom:12px}
.steps p{color:var(--muted);font-size:.92rem;margin:0}
.principles{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:40px}
.principles div{padding:4px 0 0 18px;border-left:2px solid var(--gold3)}
.principles p{color:var(--muted);font-size:.95rem;margin:0}

/* access */
.access{padding:96px 0;background:radial-gradient(700px 360px at 50% 40%,rgba(216,180,106,.16),transparent 70%),var(--bg2);border-top:1px solid var(--line)}
.access p{color:var(--muted)}
.access .btn{margin:1em 0 1.2em}

/* footer */
footer{padding:36px 0 44px;border-top:1px solid var(--line);font-size:.88rem;color:var(--dim)}
footer .row{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;margin:18px 0}
.disclaimer{color:var(--muted);max-width:900px}
.credits{font-size:.8rem}

/* prose pages */
.prose{max-width:760px;padding-top:56px;padding-bottom:72px}
.prose h2{font-size:1.4rem;margin-top:1.6em}
.prose p{color:var(--muted)}

@media (max-width:1000px){
  .steps{grid-template-columns:repeat(2,1fr)}
  .controls{grid-template-columns:1fr}
}
@media (max-width:860px){
  .hero{padding:44px 0 48px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-art{max-width:480px;margin:0 auto;width:100%}
  .pillars,.principles{grid-template-columns:1fr}
  .nav ul{display:none}
  .nav .btn{margin-left:auto}
  /* gallery becomes a swipeable row */
  .gallery,.gallery.n2{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:18px;margin:0 -22px;padding:4px 22px 16px;-webkit-overflow-scrolling:touch}
  .swipe{display:block}
  .gallery .card{flex:0 0 78%;scroll-snap-align:center}
  .gallery.n2 .card{flex-basis:82%}
  .custom{grid-template-columns:1fr 1fr}
  .custom label:first-child{grid-column:1/-1}
}
@media (max-width:520px){
  body{font-size:16px}
  .wrap{padding:0 18px}
  .brand span{font-size:1.05rem}
  .idea,.demo,.how,.access{padding:60px 0}
  .steps{grid-template-columns:1fr}
  .mini-gallery{gap:10px}
  .frame{padding:7px}
  .notes li{grid-template-columns:96px 16px 1fr;font-size:.88rem}
  .gallery,.gallery.n2{margin:0 -18px;padding:4px 18px 16px}
  .story{font-size:1.15rem}
}
@media (prefers-reduced-motion:reduce){*{transition:none !important;scroll-behavior:auto !important}}