/* ============================================================
   Deck framework — shared chrome for every visual story.
   Post-specific visuals live in the post's own <style> block.
   ============================================================ */
:root{
  --ink:#111; --muted:#666; --paper:#fff; --wash:#f5f5f3;
  --line:#d5d5d2; --soft:#ececea;
  --shadow:0 18px 55px rgba(0,0,0,.10); --radius:18px;
  /* One content measure and one gutter for every slide, so the text block
     never resizes or shifts as the reader advances. */
  --measure:min(1440px,94vw);
  --pad-x:clamp(20px,4.5vw,64px);
  --pad-top:clamp(60px,7vh,76px);
  --pad-bottom:clamp(88px,11vh,100px);
}
*{box-sizing:border-box}
html,body{height:100%;margin:0;overflow:hidden}
body{font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Arial,sans-serif;
  color:var(--ink);background:var(--paper);line-height:1.45}
button,select,a{font:inherit}

/* stage */
.deck{height:100dvh;position:relative;overflow:hidden}
.slides{height:100%;position:relative}
.slide{position:absolute;inset:0;display:grid;place-items:center;
  padding:var(--pad-top) var(--pad-x) var(--pad-bottom);
  opacity:0;visibility:hidden;transform:translateX(6%);
  transition:opacity .38s ease,transform .38s ease,visibility .38s}
.slide.active{opacity:1;visibility:visible;transform:none;z-index:2}
.slide.before{transform:translateX(-6%)}
.slide:nth-child(even){background:var(--wash)}
.wrap{width:min(100%,var(--measure));max-height:100%;overflow:auto;
  padding:4px 2px 8px;scrollbar-width:thin}

/* type */
.eyebrow{display:flex;align-items:center;gap:10px;font-size:11px;letter-spacing:.13em;
  text-transform:uppercase;color:var(--ink);font-weight:700;margin-bottom:12px}
.eyebrow:before{content:"";width:26px;height:2px;background:var(--ink)}
h1{font-size:clamp(40px,6vw,78px);line-height:.98;letter-spacing:-.05em;margin:0 0 20px;max-width:16ch}
h2{font-size:clamp(28px,3.6vw,52px);line-height:1.04;letter-spacing:-.038em;margin:0 0 14px;max-width:24ch}
h3{font-size:clamp(20px,2vw,28px);margin:0 0 9px}
.lead{font-size:clamp(16px,1.55vw,21px);line-height:1.45;color:#344054;max-width:62ch;margin:0}
.small{font-size:13px;color:var(--muted)}

/* chrome */
.topbar{position:absolute;z-index:20;top:0;left:0;right:0;height:64px;padding:14px 22px;
  display:flex;align-items:center;justify-content:space-between;pointer-events:none}
.brand,.counter{pointer-events:auto;background:rgba(255,255,255,.9);backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:999px;padding:8px 13px;font-size:13px;
  box-shadow:0 6px 24px rgba(0,0,0,.06)}
.brand{font-weight:700;color:var(--ink);text-decoration:none;display:inline-flex;gap:7px;align-items:center}
.brand:hover{border-color:var(--ink)}
.counter{color:var(--muted)}

.controls{position:absolute;z-index:25;left:0;right:0;bottom:0;min-height:74px;
  padding:12px 22px calc(12px + env(safe-area-inset-bottom));
  display:grid;grid-template-columns:120px 1fr 120px;align-items:center;gap:16px;
  background:linear-gradient(0deg,rgba(255,255,255,.98),rgba(255,255,255,.82));
  border-top:1px solid rgba(213,213,210,.8);backdrop-filter:blur(16px)}
.navbtn{border:1px solid var(--line);background:#fff;color:var(--ink);padding:11px 16px;
  border-radius:12px;font-weight:700;cursor:pointer;display:flex;gap:9px;align-items:center;
  justify-content:center;transition:.2s}
.navbtn:hover:not(:disabled){border-color:var(--ink);transform:translateY(-1px)}
.navbtn.next{background:var(--ink);border-color:var(--ink);color:#fff}
.navbtn:disabled{opacity:.35;cursor:not-allowed}
.dots{display:flex;align-items:center;justify-content:center;gap:8px}
.dot{width:8px;height:8px;border:0;border-radius:50%;background:#cfcfca;padding:0;cursor:pointer;transition:.25s}
.dot.active{width:28px;border-radius:6px;background:var(--ink)}

.hint{position:absolute;right:24px;top:74px;z-index:10;background:var(--ink);color:#fff;
  font-size:12px;padding:8px 11px;border-radius:9px;box-shadow:var(--shadow);
  opacity:0;transform:translateY(-5px);pointer-events:none}
.hint.show{animation:hint 4s ease forwards}
@keyframes hint{0%,100%{opacity:0;transform:translateY(-5px)}12%,78%{opacity:1;transform:none}}

.instruction{display:inline-flex;align-items:center;gap:6px;margin-top:12px;color:var(--muted);
  font-weight:600;font-size:11px;letter-spacing:.02em}
.instruction svg{width:13px;height:13px;opacity:.65}

/* share */
.share{display:flex;gap:8px;align-items:center;margin-top:26px;flex-wrap:wrap}
.share a,.share button{border:1px solid var(--line);background:#fff;color:var(--ink);
  border-radius:10px;padding:9px 13px;font-size:13px;font-weight:600;cursor:pointer;
  text-decoration:none;transition:.2s}
.share a:hover,.share button:hover{border-color:var(--ink)}

@media(max-width:600px){
  .topbar{padding:11px 12px}
  .controls{grid-template-columns:95px 1fr 95px;padding-left:12px;padding-right:12px}
  .navbtn{padding:10px 9px}.dots{gap:5px}.dot{width:6px;height:6px}.dot.active{width:20px}
  .wrap{padding:8px 2px 16px}
  .hint{display:none}
}
/* Entrance: the deck lifts in, then each slide's content rises in sequence.
   The class is re-applied on every navigation, so the cascade replays per slide. */
/* Slower, with a small overshoot, so arriving reads as the deck popping open
   rather than sliding in. */
@keyframes deckIn{from{opacity:0;transform:translateY(16px) scale(.965)}to{opacity:1;transform:none}}
@keyframes riseIn{from{opacity:0;transform:translateY(16px) scale(.99)}to{opacity:1;transform:none}}
.deck{animation:deckIn .68s cubic-bezier(.34,1.16,.64,1) both}
.slide.active .wrap>*{animation:riseIn .6s cubic-bezier(.34,1.14,.64,1) both}
.slide.active .wrap>*:nth-child(1){animation-delay:.06s}
.slide.active .wrap>*:nth-child(2){animation-delay:.13s}
.slide.active .wrap>*:nth-child(3){animation-delay:.2s}
.slide.active .wrap>*:nth-child(4){animation-delay:.27s}
.slide.active .wrap>*:nth-child(5){animation-delay:.34s}
.slide.active .wrap>*:nth-child(n+6){animation-delay:.41s}

@media(prefers-reduced-motion:reduce){
  .slide,.dot,.navbtn{transition:none}
  .deck,.slide.active .wrap>*{animation:none}
}