:root{
  --clr-bg:#0f1216;
  --clr-bg-soft:#171b21;
  --clr-panel:#1e232b;
  --clr-border:#2c333d;
  --clr-text:#eef1f5;
  --clr-text-dim:#9aa4b2;
  --clr-orange:#ff7a1a;
  --clr-orange-dim:#c95f10;
  --clr-yellow:#ffcc33;
  --radius:14px;
  --maxw:1080px;
  font-size:16px;
}

*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  background:var(--clr-bg);
  color:var(--clr-text);
  font-family:"Hiragino Kaku Gothic ProN","Yu Gothic",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px;}

/* header */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(15,18,22,.86);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--clr-border);
}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.03em;font-size:1.05rem;}
.brand .gear{width:30px;height:30px;flex:none;}
.brand small{display:block;font-weight:500;font-size:.62rem;color:var(--clr-text-dim);letter-spacing:.08em;}
.nav-cta{
  background:var(--clr-orange);color:#161616;font-weight:700;
  padding:9px 18px;border-radius:999px;font-size:.85rem;text-decoration:none;
  box-shadow:0 4px 14px rgba(255,122,26,.35);
  white-space:nowrap;
}

/* hero */
.hero{position:relative;min-height:78vh;display:flex;align-items:flex-end;overflow:hidden;}
.hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:saturate(1.05);}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,12,15,.15) 0%,rgba(10,12,15,.55) 55%,rgba(10,12,15,.96) 100%);
}
.hero-inner{position:relative;z-index:2;padding:60px 0 46px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,122,26,.14);border:1px solid rgba(255,122,26,.4);
  color:var(--clr-orange);font-size:.75rem;font-weight:700;letter-spacing:.06em;
  padding:6px 14px;border-radius:999px;margin-bottom:18px;
}
.hero h1{font-size:clamp(1.7rem,4.6vw,2.9rem);margin:0 0 16px;font-weight:800;letter-spacing:.01em;}
.hero h1 em{font-style:normal;color:var(--clr-orange);}
.hero p{color:var(--clr-text-dim);font-size:1rem;max-width:560px;margin:0 0 30px;}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap;}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 26px;border-radius:999px;font-weight:700;font-size:.95rem;
  text-decoration:none;border:none;cursor:pointer;transition:transform .15s ease;
}
.btn:active{transform:scale(.97);}
.btn-primary{background:var(--clr-orange);color:#161616;box-shadow:0 8px 24px rgba(255,122,26,.4);}
.btn-ghost{background:transparent;color:var(--clr-text);border:1px solid var(--clr-border);}

/* sections */
section{padding:64px 0;}
.section-head{max-width:640px;margin:0 0 40px;}
.section-head .tag{color:var(--clr-orange);font-weight:700;font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;}
.section-head h2{font-size:clamp(1.4rem,3vw,1.9rem);margin:10px 0 12px;font-weight:800;}
.section-head p{color:var(--clr-text-dim);margin:0;}

/* brief recap */
.brief-card{
  background:var(--clr-panel);border:1px solid var(--clr-border);border-radius:var(--radius);
  padding:28px;display:grid;grid-template-columns:repeat(4,1fr);gap:0;overflow:hidden;
}
.brief-card .step{padding:14px 18px;position:relative;}
.brief-card .step + .step{border-left:1px dashed var(--clr-border);}
.brief-card .step .n{
  width:28px;height:28px;border-radius:50%;background:var(--clr-orange);color:#161616;
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.85rem;margin-bottom:12px;
}
.brief-card .step h4{margin:0 0 6px;font-size:.92rem;}
.brief-card .step p{margin:0;color:var(--clr-text-dim);font-size:.82rem;}

@media (max-width:820px){
  .brief-card{grid-template-columns:1fr 1fr;}
  .brief-card .step + .step{border-left:none;border-top:1px dashed var(--clr-border);}
}
@media (max-width:520px){
  .brief-card{grid-template-columns:1fr;}
}

/* signage mockup */
.signage-wrap{display:grid;grid-template-columns:1.1fr 1fr;gap:40px;align-items:center;}
@media (max-width:820px){.signage-wrap{grid-template-columns:1fr;}}

.signage-board{
  background:linear-gradient(160deg,#2a2f37,#171a1f);
  border:1px solid var(--clr-border);border-radius:var(--radius);
  padding:26px;position:relative;
}
.signage-board .stripe{
  position:absolute;inset:0;border-radius:var(--radius);pointer-events:none;
  background:repeating-linear-gradient(45deg,rgba(255,204,51,.06) 0 14px,transparent 14px 28px);
}
.signage-board h3{margin:0 0 4px;font-size:1.05rem;}
.signage-board .sub{color:var(--clr-text-dim);font-size:.8rem;margin:0 0 20px;}
.signage-qr{
  background:#fff;border-radius:10px;padding:14px;width:150px;height:150px;
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.signage-note{font-size:.78rem;color:var(--clr-text-dim);}

.flow-steps{display:flex;flex-direction:column;gap:18px;}
.flow-steps .fs{display:flex;gap:16px;align-items:flex-start;}
.flow-steps .ico{
  flex:none;width:44px;height:44px;border-radius:12px;background:var(--clr-panel);
  border:1px solid var(--clr-border);display:flex;align-items:center;justify-content:center;font-size:1.2rem;
}
.flow-steps h4{margin:0 0 4px;font-size:.95rem;}
.flow-steps p{margin:0;color:var(--clr-text-dim);font-size:.85rem;}

/* tech grid */
.tech-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
@media (max-width:820px){.tech-grid{grid-template-columns:1fr;}}
.tech-card{
  background:var(--clr-panel);border:1px solid var(--clr-border);border-radius:var(--radius);padding:24px;
}
.tech-card .ico{font-size:1.6rem;margin-bottom:14px;}
.tech-card h4{margin:0 0 8px;font-size:1rem;}
.tech-card p{margin:0;color:var(--clr-text-dim);font-size:.84rem;}
.tech-card .kw{
  display:inline-block;margin-top:12px;font-size:.72rem;color:var(--clr-orange);
  background:rgba(255,122,26,.1);border:1px solid rgba(255,122,26,.3);padding:3px 9px;border-radius:999px;
}

/* gallery */
.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;}
@media (max-width:820px){.gallery{grid-template-columns:repeat(2,1fr);}}
.gallery figure{margin:0;border-radius:12px;overflow:hidden;border:1px solid var(--clr-border);position:relative;aspect-ratio:4/5;}
.gallery img{width:100%;height:100%;object-fit:cover;}
.gallery figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:10px 12px;font-size:.72rem;
  background:linear-gradient(0deg,rgba(0,0,0,.75),transparent);color:#fff;
}

/* footer */
footer{border-top:1px solid var(--clr-border);padding:36px 0;color:var(--clr-text-dim);font-size:.82rem;}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;}

/* ===== AR page ===== */
.ar-shell{min-height:100vh;display:flex;flex-direction:column;background:#000;}
.ar-topbar{
  display:flex;align-items:center;justify-content:space-between;padding:12px 16px;
  background:rgba(15,18,22,.92);border-bottom:1px solid var(--clr-border);position:relative;z-index:5;
}
.ar-topbar a{font-size:.8rem;color:var(--clr-text-dim);text-decoration:none;}
.ar-topbar .brand{font-size:.9rem;}
.stage{
  position:relative;flex:1;display:flex;align-items:center;justify-content:center;
  background:#05070a;overflow:hidden;min-height:420px;
}
#outputCanvas{max-width:100%;max-height:70vh;width:100%;height:auto;background:#000;border-radius:0;}
video{display:none;}

.stage-msg{
  position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;text-align:center;padding:30px;color:var(--clr-text-dim);z-index:4;background:#05070a;
}
.stage-msg .ico{font-size:2.4rem;}
.stage-msg h3{color:var(--clr-text);margin:0;font-size:1.05rem;}
.stage-msg p{max-width:340px;margin:0;font-size:.85rem;}

.status-chip{
  position:absolute;top:14px;left:14px;z-index:5;
  background:rgba(0,0,0,.55);border:1px solid rgba(255,255,255,.15);
  padding:6px 12px;border-radius:999px;font-size:.72rem;display:flex;align-items:center;gap:6px;
}
.status-chip .dot{width:8px;height:8px;border-radius:50%;background:var(--clr-yellow);}
.status-chip.ready .dot{background:#4ade80;}

.bg-picker{
  display:flex;gap:10px;padding:14px 16px;overflow-x:auto;background:var(--clr-bg-soft);
  border-top:1px solid var(--clr-border);
}
.bg-picker button{
  flex:none;width:64px;height:64px;border-radius:10px;overflow:hidden;border:2px solid transparent;
  padding:0;cursor:pointer;background:#111;position:relative;
}
.bg-picker button img{width:100%;height:100%;object-fit:cover;}
.bg-picker button.active{border-color:var(--clr-orange);}
.bg-picker button span{
  position:absolute;bottom:0;left:0;right:0;font-size:.55rem;background:rgba(0,0,0,.6);color:#fff;padding:2px 0;
}

.controls{
  display:flex;align-items:center;justify-content:center;gap:22px;padding:20px 16px 30px;background:var(--clr-bg-soft);
}
.shutter{
  width:72px;height:72px;border-radius:50%;background:#fff;border:5px solid var(--clr-orange);
  cursor:pointer;position:relative;
}
.shutter:active{transform:scale(.95);}
.ctl-btn{
  width:46px;height:46px;border-radius:50%;background:var(--clr-panel);border:1px solid var(--clr-border);
  color:var(--clr-text);font-size:1.1rem;cursor:pointer;display:flex;align-items:center;justify-content:center;
}

.result-overlay{
  position:fixed;inset:0;background:rgba(5,7,10,.96);z-index:20;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:20px;padding:24px;
}
.result-overlay img{max-width:min(92vw,420px);border-radius:16px;border:1px solid var(--clr-border);}
.result-actions{display:flex;gap:14px;}
.hidden{display:none !important;}

.perm-note{font-size:.72rem;color:var(--clr-text-dim);margin-top:10px;}