/* Brand: black + metallic gold, orange for the one action (Brand Tokens SOT). No flat white. */
:root{--black:#0A0A0C;--surface:#141410;--orange:#FF7A1A;--text:#F4F1E8;--muted:#A8A69B;--border:#26261E;--gold:linear-gradient(100deg,#8A6D1D 0%,#F6D976 48%,#C9A227 100%)}
*{margin:0;padding:0;box-sizing:border-box}
html,body{height:100%;overflow:hidden;background:var(--black);color:var(--text);font-family:Inter,system-ui,-apple-system,"Segoe UI",sans-serif}
body{background:radial-gradient(ellipse at 50% 35%,#26261E 0%,#141410 45%,#0A0A0C 100%);display:flex;flex-direction:column}
header{flex:none;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 18px;border-bottom:1px solid var(--border)}
header h1{font:700 clamp(15px,2.2vw,22px)/1.1 "Space Grotesk",Inter,system-ui,sans-serif;letter-spacing:.4px;text-transform:uppercase;background:var(--gold);-webkit-background-clip:text;background-clip:text;color:transparent}
.cta{flex:none;text-decoration:none;color:#0A0A0C;background:var(--orange);font-weight:700;font-size:14px;padding:9px 16px;border-radius:999px;box-shadow:0 0 22px rgba(255,122,26,.45)}
main{flex:1;min-height:0;position:relative;display:flex;align-items:center;justify-content:center;padding:10px 0}
#stage{width:100%;height:100%;display:flex;align-items:center;justify-content:center;overflow:hidden}
#book{width:min(96vw,1700px);height:100%;transition:transform .6s cubic-bezier(.4,0,.2,1)}
#hint{position:absolute;left:50%;top:14px;transform:translateX(-50%);background:rgba(20,20,16,.88);border:1px solid #8A6D1D;color:var(--text);padding:8px 16px;border-radius:999px;font-size:14px;transition:opacity .5s;pointer-events:none}
#hint.gone{opacity:0}
.bar{flex:none;display:flex;align-items:center;justify-content:center;gap:10px;padding:8px 12px;flex-wrap:wrap}
.bar button,.bar a.btn{background:var(--surface);color:var(--text);border:1px solid #8A6D1D;border-radius:999px;padding:8px 16px;font:600 14px Inter,system-ui,sans-serif;cursor:pointer;text-decoration:none}
.bar button:hover,.bar a.btn:hover{border-color:#F6D976}
#counter{min-width:130px;text-align:center;color:var(--muted);font-size:14px}
footer{flex:none;padding:6px 18px 10px;color:var(--muted);font-size:11px;line-height:1.35;text-align:center;border-top:1px solid var(--border)}
@media (max-width:640px){header{padding:8px 12px}.cta{padding:8px 12px;font-size:13px}.bar button,.bar a.btn{padding:8px 12px}footer{font-size:10px}}