/* The Coolidge Group — flipbook system
   Brand: Crimson #A8192E · Graphite #1F2329 · Warm Estate #F5F0E8 · Ivory #FFF · Stone #E6DED3 · Taupe #B7A58A */
:root{
  --crimson:#A8192E; --graphite:#1F2329; --warm:#F5F0E8; --ivory:#ffffff;
  --stone:#E6DED3; --taupe:#B7A58A; --onyx:#000;
  --ratio:0.7723; /* 1275/1651 */
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:'Lato',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  color:var(--graphite); background:var(--warm);
  display:flex; flex-direction:column; min-height:100vh; -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}

/* wordmark */
.wordmark{font-weight:300;letter-spacing:.28em;text-transform:uppercase;font-size:15px;color:var(--graphite);white-space:nowrap}
.wordmark b{font-weight:700;color:var(--crimson);letter-spacing:.28em}
.logo-img{height:26px;width:auto;display:none}

/* top bar */
header.bar{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:0 22px;height:58px;background:var(--ivory);border-bottom:1px solid var(--stone);
  position:sticky;top:0;z-index:20;flex:0 0 auto;
}
.bar .center{display:flex;align-items:center;gap:14px;min-width:0}
.guide-title{font-family:'Lora',serif;font-size:17px;color:var(--graphite);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.guide-title .dot{color:var(--taupe);margin:0 10px}
.backlink{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--graphite);opacity:.7;transition:opacity .2s;white-space:nowrap}
.backlink:hover{opacity:1;color:var(--crimson)}

/* stage */
main{flex:1 1 auto;display:flex;align-items:center;justify-content:center;padding:22px 16px;overflow:hidden}
#stage{
  position:relative; height:min(78vh,860px); width:calc(min(78vh,860px) * var(--ratio)); max-width:94vw;
  perspective:2200px; user-select:none; -webkit-tap-highlight-color:transparent; cursor:zoom-in;
}
#base{position:absolute;inset:0;width:100%;height:100%;display:block;
  box-shadow:0 14px 46px rgba(31,35,41,.30);background:var(--ivory)}
.leaf{position:absolute;inset:0;width:100%;height:100%;transform-origin:left center;
  transform-style:preserve-3d;backface-visibility:hidden;z-index:5;
  transition:transform .62s cubic-bezier(.4,.15,.2,1);box-shadow:0 0 46px rgba(0,0,0,.30)}
.leaf img{width:100%;height:100%;display:block;backface-visibility:hidden}
.leaf.fwd{transform:rotateY(0)}
.leaf.fwd.turn{transform:rotateY(-180deg)}
.leaf.bwd{transform:rotateY(180deg)}
.leaf.bwd.turn{transform:rotateY(0)}

/* edge hint arrows */
.edge{position:absolute;top:50%;transform:translateY(-50%);z-index:8;width:44px;height:44px;border-radius:50%;
  background:rgba(255,255,255,.92);border:1px solid var(--stone);display:flex;align-items:center;justify-content:center;
  color:var(--graphite);font-size:20px;opacity:0;transition:opacity .25s;pointer-events:auto;cursor:pointer;
  box-shadow:0 2px 10px rgba(0,0,0,.12)}
#stage:hover .edge{opacity:.95}
.edge:hover{color:var(--crimson)}
.edge.l{left:-22px}.edge.r{right:-22px}

/* zoom button on page */
.zoombtn{position:absolute;bottom:12px;right:12px;z-index:9;width:42px;height:42px;border-radius:50%;
  background:rgba(31,35,41,.72);border:none;cursor:pointer;display:flex;align-items:center;justify-content:center}
.zoombtn svg{width:20px;height:20px;stroke:#fff;fill:none;stroke-width:2}
.zoombtn:hover{background:rgba(31,35,41,.9)}

/* bottom bar */
footer.bar{
  flex:0 0 auto;background:var(--ivory);border-top:1px solid var(--stone);
  display:flex;flex-direction:column;align-items:center;gap:0;
}
.controls{display:flex;align-items:center;justify-content:center;gap:20px;height:52px}
.controls button.nav{
  background:none;border:none;cursor:pointer;font-size:22px;color:var(--graphite);width:40px;height:40px;
  border-radius:50%;transition:background .2s,color .2s;display:flex;align-items:center;justify-content:center}
.controls button.nav:hover:not(:disabled){background:var(--warm);color:var(--crimson)}
.controls button.nav:disabled{opacity:.25;cursor:default}
#pagelabel{font-size:13px;letter-spacing:.14em;color:var(--graphite);min-width:78px;text-align:center;font-variant-numeric:tabular-nums}

.ctarow{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:10px;
  padding:0 16px 14px;width:100%}
.cta{display:inline-flex;align-items:center;gap:7px;font-size:12px;letter-spacing:.13em;text-transform:uppercase;
  padding:9px 16px;border-radius:2px;border:1px solid var(--stone);color:var(--graphite);
  background:var(--ivory);cursor:pointer;transition:all .2s;white-space:nowrap}
.cta:hover{border-color:var(--graphite)}
.cta.primary{background:var(--crimson);color:#fff;border-color:var(--crimson)}
.cta.primary:hover{background:#8f1427;border-color:#8f1427}
.cta svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:1.8}

@media (max-width:640px){
  #stage{height:auto;width:92vw;max-width:92vw}
  #stage.mobile{aspect-ratio:1275/1651}
  .guide-title{font-size:15px}
  .wordmark{font-size:13px;letter-spacing:.22em}
  .backlink span{display:none}
  .edge{display:none}
}
.toast{position:fixed;left:50%;bottom:96px;transform:translateX(-50%) translateY(10px);opacity:0;
  background:var(--graphite);color:var(--warm);font-size:12px;letter-spacing:.08em;padding:9px 16px;border-radius:3px;
  transition:opacity .25s,transform .25s;z-index:40;pointer-events:none}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* registration gate modal */
.gate-ov{position:fixed;inset:0;background:rgba(31,35,41,.55);display:none;align-items:center;justify-content:center;z-index:60;padding:20px}
.gate-ov.show{display:flex}
.gate{background:var(--ivory);width:100%;max-width:420px;border-radius:6px;overflow:hidden;box-shadow:0 30px 80px rgba(0,0,0,.4)}
.gate-head{background:var(--graphite);color:var(--warm);padding:22px 26px;position:relative}
.gate-head .k{font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--taupe)}
.gate-head h3{font-family:'Lora',serif;font-weight:500;font-size:20px;margin-top:6px;color:#fff}
.gate-x{position:absolute;top:16px;right:18px;background:none;border:none;color:var(--warm);font-size:24px;cursor:pointer;line-height:1;opacity:.7}
.gate-x:hover{opacity:1}
.gate-body{padding:20px 26px 26px}
.gate-body label{display:block;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--graphite);margin:14px 0 5px}
.gate-body input{width:100%;padding:11px 13px;border:1px solid var(--stone);border-radius:3px;font-size:15px;font-family:inherit;color:var(--graphite);background:#fff}
.gate-body input:focus{outline:none;border-color:var(--crimson)}
.gate-body input.err{border-color:var(--crimson);background:#fdf3f4}
.gate-sub{width:100%;margin-top:20px;background:var(--crimson);color:#fff;border:none;padding:13px;border-radius:2px;font-size:12px;letter-spacing:.16em;text-transform:uppercase;cursor:pointer;transition:background .2s}
.gate-sub:hover{background:#8f1427}.gate-sub:disabled{opacity:.6;cursor:default}
.gate-note{margin-top:14px;font-size:11px;line-height:1.5;color:#7a7f86;text-align:center}

/* fullscreen zoom / read viewer — natural scroll */
.zoomview{position:fixed;inset:0;background:rgba(18,20,24,.96);display:none;z-index:80;overflow:auto;-webkit-overflow-scrolling:touch}
.zoomview.show{display:block}
.zc{min-height:100%;padding:20px 0 100px;text-align:center}
.zimg{display:block;margin:0 auto;box-shadow:0 10px 50px rgba(0,0,0,.5);user-select:none;-webkit-user-drag:none}
.zclose{position:fixed;top:12px;right:16px;z-index:82;background:rgba(0,0,0,.4);border:none;color:#fff;
  font-size:24px;width:44px;height:44px;border-radius:50%;line-height:1;cursor:pointer;opacity:.92}
.zclose:hover{opacity:1}
.zhint{position:fixed;top:16px;left:50%;transform:translateX(-50%);z-index:82;color:#fff;
  font-size:12px;letter-spacing:.05em;background:rgba(0,0,0,.4);padding:7px 14px;border-radius:20px}
.zctrl{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);z-index:82;display:flex;gap:12px}
.zctrl button{width:52px;height:52px;border-radius:50%;background:rgba(255,255,255,.18);
  border:1px solid rgba(255,255,255,.36);color:#fff;font-size:26px;cursor:pointer;line-height:1}
.zctrl button:hover{background:rgba(255,255,255,.28)}
.zctrl button:disabled{opacity:.32;cursor:default}
.zctrl .znav{background:rgba(168,25,46,.85);border-color:rgba(168,25,46,.9)}
.zctrl .znav:hover:not(:disabled){background:#8f1427}
.zpage{position:fixed;top:16px;left:16px;z-index:82;color:#fff;font-size:12px;letter-spacing:.1em;
  background:rgba(0,0,0,.4);padding:7px 12px;border-radius:20px;font-variant-numeric:tabular-nums}