/* sho eigo Explainer Slides — Common styles */
:root{
  --bg:#0c1a39;--bg-soft:#13234a;--paper:#f6f2e9;
  --ink:#1a1814;--ink-soft:#5a554c;
  --navy:#13234a;--navy-deep:#0c1a39;
  --gold:#b89455;--gold-soft:#d9b97a;--gold-pale:#ebd99e;
  --rose:#a85a6a;--blue:#2a5a8a;--green:#3a7a4a;--purple:#6b3a8a;
  --line:rgba(255,255,255,.15);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%;overflow:hidden}
body{
  font-family:'Shippori Mincho','Noto Sans JP',sans-serif;
  background:linear-gradient(160deg,var(--navy-deep) 0%,var(--navy) 100%);
  color:var(--paper);line-height:1.85;letter-spacing:.02em;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:'';position:fixed;inset:0;pointer-events:none;
  background-image:
    radial-gradient(circle at 15% 20%,rgba(184,148,85,.08) 0%,transparent 40%),
    radial-gradient(circle at 85% 80%,rgba(42,90,138,.12) 0%,transparent 45%);
}

.stage{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;padding:24px}
.slide{
  position:absolute;inset:0;
  display:flex;align-items:center;justify-content:center;padding:60px 24px 120px;
  opacity:0;visibility:hidden;transition:opacity .6s ease,visibility 0s .6s;
}
.slide.active{opacity:1;visibility:visible;transition:opacity .6s ease;animation:slideIn .8s ease both}
@keyframes slideIn{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:none}}
.slide-inner{max-width:780px;margin:0 auto;text-align:center;position:relative;z-index:1}

.eyebrow{
  font-family:'Cormorant Garamond',serif;font-style:italic;font-size:13px;
  letter-spacing:.32em;color:var(--gold);text-transform:uppercase;margin-bottom:24px;
}
h1.slide-title{
  font-family:'Shippori Mincho',serif;font-weight:700;
  font-size:clamp(28px,5.5vw,46px);line-height:1.4;
  color:var(--paper);margin-bottom:20px;letter-spacing:.04em;
}
h1.slide-title b{color:var(--gold-soft);position:relative;display:inline-block}
h1.slide-title b::after{
  content:'';position:absolute;left:0;right:0;bottom:-4px;height:2px;background:var(--gold);
}
p.slide-body{
  font-family:'Noto Sans JP',sans-serif;font-weight:400;
  font-size:clamp(14px,2vw,17px);color:rgba(246,242,233,.85);
  line-height:2.1;margin-bottom:30px;
}

.diagram{margin:28px auto;max-width:520px}
.timeline{display:grid;grid-template-columns:auto 1fr;gap:14px;text-align:left;background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:8px;padding:18px 22px}
.timeline-label{font-family:'Cormorant Garamond',serif;font-style:italic;color:var(--gold);font-size:13px;letter-spacing:.2em;align-self:center}
.timeline-text{font-family:'Noto Sans JP',sans-serif;font-size:13px;color:rgba(246,242,233,.9);align-self:center}
.wave{font-family:'JetBrains Mono',monospace;color:var(--gold-soft);font-size:14px;letter-spacing:.05em;line-height:1.9}
.wave .you{color:var(--gold)}
.wave .gap{color:rgba(184,148,85,.4)}

.compare-2{display:grid;grid-template-columns:1fr;gap:14px;margin:24px 0}
@media(min-width:680px){.compare-2{grid-template-columns:1fr 1fr;gap:20px}}
.compare-card{
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  border-radius:8px;padding:22px 20px;text-align:left;
}
.compare-card.overlap{border-left:3px solid var(--blue)}
.compare-card.shadow{border-left:3px solid var(--purple)}
.compare-card.green{border-left:3px solid var(--green)}
.compare-card.gold{border-left:3px solid var(--gold)}
.compare-card h3{
  font-family:'Shippori Mincho',serif;font-size:16px;font-weight:700;
  color:var(--paper);margin-bottom:8px;
}
.compare-card p{font-family:'Noto Sans JP',sans-serif;font-size:12px;color:rgba(246,242,233,.75);line-height:1.85}
.compare-card .when{
  display:inline-block;font-family:'Cormorant Garamond',serif;font-style:italic;
  font-size:11px;color:var(--gold-soft);letter-spacing:.2em;text-transform:uppercase;
  margin-bottom:6px;
}

.audio-btn{
  display:inline-flex;align-items:center;gap:10px;
  background:var(--gold);color:var(--navy-deep);text-decoration:none;
  padding:14px 26px;border-radius:99px;font-size:14px;font-weight:600;
  font-family:'Noto Sans JP',sans-serif;cursor:pointer;border:0;
  margin:6px 4px;transition:all .2s;
}
.audio-btn:hover{background:var(--gold-soft);transform:translateY(-2px)}
.audio-btn:disabled{opacity:.5;cursor:not-allowed;transform:none}

.cta-btn{
  display:inline-flex;align-items:center;gap:10px;
  background:var(--gold);color:var(--navy-deep);text-decoration:none;
  padding:16px 34px;border-radius:99px;font-size:15px;font-weight:600;
  font-family:'Noto Sans JP',sans-serif;letter-spacing:.04em;margin-top:14px;
  transition:all .2s;box-shadow:0 8px 24px rgba(184,148,85,.3);
}
.cta-btn:hover{background:var(--gold-soft);transform:translateY(-2px)}

.controls{
  position:fixed;left:50%;bottom:30px;transform:translateX(-50%);
  display:flex;align-items:center;gap:10px;
  background:rgba(12,26,57,.85);backdrop-filter:blur(10px);
  border:1px solid var(--line);border-radius:99px;padding:8px 12px;z-index:10;
}
.ctrl{
  width:36px;height:36px;border-radius:50%;background:transparent;
  border:0;color:var(--paper);cursor:pointer;font-size:14px;
  display:inline-flex;align-items:center;justify-content:center;
  transition:background .15s;
}
.ctrl:hover{background:rgba(255,255,255,.1)}
.ctrl.play{background:var(--gold);color:var(--navy-deep)}
.ctrl.play:hover{background:var(--gold-soft)}
.ctrl:disabled{opacity:.3;cursor:not-allowed}
.ctrl-count{
  font-family:'JetBrains Mono',monospace;font-size:11px;color:rgba(246,242,233,.7);
  padding:0 8px;letter-spacing:.1em;min-width:50px;text-align:center;
}

.progress{position:fixed;top:0;left:0;right:0;height:3px;background:rgba(255,255,255,.05);z-index:10}
.progress-fill{height:100%;background:var(--gold);width:0%;transition:width .6s ease}

.brand{
  position:fixed;top:18px;left:24px;
  font-family:'Cormorant Garamond',serif;font-style:italic;
  font-size:18px;color:var(--gold-soft);font-weight:600;
  text-decoration:none;z-index:10;
}
.skip{
  position:fixed;top:18px;right:24px;
  font-family:'Noto Sans JP',sans-serif;font-size:12px;color:rgba(246,242,233,.65);
  background:transparent;border:1px solid rgba(255,255,255,.2);border-radius:99px;
  padding:6px 14px;cursor:pointer;z-index:10;
}
.skip:hover{color:var(--paper);border-color:var(--gold)}