:root{
  --bg:#0b0c0f;
  --paper:#efe7db;
  --ink:#14151a;
  --gold:#d8b45c;
  --gold2:#b7892f;
  --line:rgba(255,255,255,.14);
  --shadow:0 24px 60px rgba(0,0,0,.45);
  --radius:18px;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: system-ui, -apple-system, "Hiragino Sans", "Noto Sans JP", "Yu Gothic", "Meiryo", sans-serif;
  color:#fff;
  background:var(--bg);
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.nav{
  position:fixed; inset:0 0 auto 0;
  height:64px;
  display:flex; align-items:center; justify-content:space-between;
  padding:0 22px;
  z-index:50;
  background:linear-gradient(to bottom, rgba(0,0,0,.68), rgba(0,0,0,0));
  backdrop-filter:saturate(140%) blur(8px);
}
.nav .brand{
  display:flex; align-items:center; gap:12px;
  letter-spacing:.18em;
  font-weight:700;
  text-transform:uppercase;
  font-size:12px;
  opacity:.92;
}
.nav .pill{
  display:inline-flex; align-items:center; gap:10px;
  padding:10px 14px;
  border:1px solid rgba(255,255,255,.16);
  border-radius:999px;
  background:rgba(0,0,0,.22);
}
.nav .pill small{opacity:.75}
main{position:relative}

.panel{
  position:relative;
  min-height:100vh;
  overflow:hidden;
  isolation:isolate;
}
.panel.paper{background:var(--paper); color:var(--ink)}
.layer{
  position:absolute; inset:0;
  will-change:transform;
  transform:translate3d(0,0,0);
}
.layer.bg{
  background-position:center;
  background-repeat:no-repeat;
  background-size:cover;
  transform:translate3d(0,0,0) scale(1.12);
}
.layer.vignette{
  pointer-events:none;
  background:
    radial-gradient(70% 60% at 50% 35%, rgba(0,0,0,.0), rgba(0,0,0,.55)),
    linear-gradient(to bottom, rgba(0,0,0,.55), rgba(0,0,0,0) 30%, rgba(0,0,0,.4));
  mix-blend-mode:multiply;
  opacity:.9;
}
.layer.papergrain{
  pointer-events:none;
  background:
    radial-gradient(1200px 600px at 20% 10%, rgba(255,255,255,.18), rgba(255,255,255,0)),
    radial-gradient(1000px 700px at 80% 30%, rgba(0,0,0,.10), rgba(0,0,0,0)),
    repeating-linear-gradient(115deg, rgba(0,0,0,.04) 0 1px, rgba(0,0,0,0) 1px 7px);
  opacity:.18;
}
.container{
  position:relative;
  max-width:1100px;
  margin:0 auto;
  padding:112px 20px 80px;
  z-index:5;
}
.hero{
  background:#000;
  display:flex;
  align-items:flex-end;
  justify-content:center;
}
.hero .container{
  width:100%;
  padding-bottom:84px;
  display:flex; flex-direction:column; align-items:center; gap:18px;
}
.hero .headline{
  margin:0;
  font-size: clamp(28px, 4.2vw, 54px);
  line-height:1.05;
  text-align:center;
  letter-spacing:.04em;
  text-shadow:0 12px 60px rgba(0,0,0,.55);
}
.hero .sub{
  margin:0;
  max-width:46rem;
  text-align:center;
  opacity:.88;
  font-size: clamp(13px, 1.4vw, 16px);
  line-height:1.85;
}
.hero .cta{
  display:flex; gap:12px; flex-wrap:wrap; justify-content:center;
  margin-top:10px;
}
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:12px 18px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.18);
  background:rgba(0,0,0,.35);
  transition:filter .2s ease, transform .2s ease, background .2s ease, border-color .2s ease;
  user-select:none;
}
.btn.primary{
  border-color:rgba(216,180,92,.55);
  background:linear-gradient(180deg, rgba(216,180,92,.96), rgba(183,137,47,.96));
  color:#1a1406;
  font-weight:700;
  box-shadow:0 18px 44px rgba(216,180,92,.22);
}
.btn:hover{filter:brightness(1.04)} /* No movement on hover (no jitter) */
.btn:active{filter:brightness(.98)}
.scrollHint{
  position:absolute; left:50%; bottom:18px;
  transform:translateX(-50%);
  font-size:11px;
  letter-spacing:.38em;
  opacity:.7;
  z-index:6;
}
.scrollHint::after{
  content:"";
  display:block;
  width:1px; height:34px;
  margin:10px auto 0;
  background:linear-gradient(to bottom, rgba(255,255,255,.0), rgba(255,255,255,.85), rgba(255,255,255,.0));
  animation:hint 1.8s ease-in-out infinite;
}
@keyframes hint{ 0%,100%{opacity:.45} 50%{opacity:1} }

.hero .device{
  position:absolute;
  width:min(520px, 52vw);
  left:50%;
  top:48%;
  transform:translate(-50%,-50%);
  filter:drop-shadow(0 30px 70px rgba(0,0,0,.55));
  z-index:4;
  border-radius:14px;
}
.hero .mark{
  position:absolute;
  width:min(210px, 22vw);
  left:50%;
  top:68%;
  transform:translate(-50%,-50%);
  opacity:.95;
  z-index:4;
  filter:drop-shadow(0 14px 40px rgba(0,0,0,.55));
}
.hero .glow{
  pointer-events:none;
  background:
    radial-gradient(700px 520px at 50% 52%, rgba(216,180,92,.16), rgba(216,180,92,0) 65%),
    radial-gradient(900px 700px at 50% 35%, rgba(255,255,255,.10), rgba(255,255,255,0) 70%);
  opacity:.95;
  z-index:3;
}

.imgPanel{
  min-height: 110vh;
}
.imgPanel .frame{
  position:relative;
  max-width: 1320px;
  margin:0 auto;
  padding-top: 84px;
  z-index:4;
}
.imgPanel .shot{
  width:100%;
  height:auto;
  border-radius: 22px;
  box-shadow: var(--shadow);
  outline: 1px solid rgba(255,255,255,.08);
  background:#000;
}
.imgPanel.paper .shot{
  outline-color: rgba(20,21,26,.10);
}
.imgPanel .captionBar{
  display:flex; justify-content:center;
  padding:24px 16px 0;
  color:rgba(255,255,255,.72);
  font-size:13px;
}
.imgPanel.paper .captionBar{color:rgba(20,21,26,.65)}
.divider{
  height:1px;
  background: linear-gradient(90deg, rgba(255,255,255,0), rgba(255,255,255,.28), rgba(255,255,255,0));
  opacity:.7;
}

.sectionTitle{
  color:rgba(255,255,255,.82);
  font-size:12px;
  letter-spacing:.28em;
  text-transform:uppercase;
  margin:0 0 14px;
}
.paper .sectionTitle{color:rgba(20,21,26,.65)}
.cardGrid{
  display:grid;
  grid-template-columns: repeat(12, 1fr);
  gap:16px;
}
.card{
  grid-column: span 6;
  border-radius: var(--radius);
  border:1px solid rgba(255,255,255,.12);
  background: rgba(0,0,0,.35);
  padding:18px 18px 16px;
}
.paper .card{
  border-color: rgba(20,21,26,.12);
  background: rgba(255,255,255,.55);
}
.card h3{margin:0 0 8px; font-size:16px; letter-spacing:.04em}
.card p{margin:0; opacity:.78; line-height:1.75; font-size:13px}
.paper .card p{opacity:.8}
@media (max-width:880px){
  .nav{padding:0 14px}
  .card{grid-column: span 12}
  .imgPanel .frame{padding-top:72px}
  .hero .device{top:52%}
  .hero .mark{top:72%}
}
@media (prefers-reduced-motion: reduce){
  .layer{transform:none !important}
  .scrollHint::after{animation:none}
}