/* ==========================================================================
   展厅页（A 方案的后继）
   全屏 3D、机位预设、底部在售入口。
   热点坐标与录制版本绑定，展厅会重录，所以先不做热点。
   ========================================================================== */

html,body{height:100%;overflow:hidden}
body{background:radial-gradient(120% 90% at 50% 0%,#1D222B 0%,#0B0D10 62%)}

.hall{position:fixed;inset:0;overflow:hidden}

/* 舞台 ---------------------------------------------------------------- */
.hall-stage{position:absolute;inset:0}
.pl-viewer{width:100%;height:100%;background:transparent;--poster-color:transparent}
.hall-vignette{
  position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(90% 70% at 50% 45%,transparent 40%,rgba(6,8,10,.72) 100%);
}

/* 顶部 ---------------------------------------------------------------- */
.hall-top{position:absolute;top:0;left:0;right:0;z-index:6}

/* 左下标题 ------------------------------------------------------------ */
.hall-title{
  position:absolute;left:var(--pad-x);bottom:170px;z-index:6;max-width:400px;
}
.hall-eyebrow{
  font-family:var(--mono);font-size:10.5px;letter-spacing:.22em;
  color:var(--brass);margin-bottom:14px;
}
.hall-title h1{
  font-family:var(--serif);font-size:52px;line-height:1.05;
  font-weight:400;letter-spacing:-.01em;
}
.hall-title p{
  margin-top:16px;font-size:13px;line-height:1.85;
  color:var(--muted);max-width:340px;
}
.hall-cta{
  display:inline-flex;align-items:center;gap:10px;margin-top:22px;
  font-size:12.5px;letter-spacing:.1em;color:rgba(237,234,228,.88);
  border-bottom:1px solid rgba(201,162,39,.45);padding-bottom:5px;
  transition:color .2s,border-color .2s;
}
.hall-cta:hover{color:#fff;border-color:var(--brass)}
.hall-cta span{font-size:14px;transition:transform .2s}
.hall-cta:hover span{transform:translateX(3px)}

/* 右下机位 ------------------------------------------------------------ */
.hall-views{
  position:absolute;right:var(--pad-x);bottom:170px;z-index:6;
  display:flex;flex-direction:column;align-items:flex-end;gap:10px;
}
.hall-views-label{
  font-family:var(--mono);font-size:9.5px;letter-spacing:.2em;color:var(--muted);
}
.hall-views-btns{display:flex;flex-direction:column;gap:6px}
.hall-views-btns button{
  font-size:11.5px;letter-spacing:.08em;padding:8px 16px;border-radius:999px;
  border:1px solid var(--line);color:rgba(237,234,228,.62);
  background:rgba(18,22,30,.52);backdrop-filter:blur(10px);
  transition:.18s;min-width:88px;text-align:center;
}
.hall-views-btns button:hover{color:#fff;border-color:var(--line-strong)}
.hall-views-btns button.on{
  color:#15120A;background:var(--brass);border-color:transparent;font-weight:600;
}

/* 底部在售入口 -------------------------------------------------------- */
.hall-shelf{
  position:absolute;left:var(--pad-x);right:var(--pad-x);bottom:34px;z-index:6;
  display:flex;align-items:center;gap:18px;
  padding-top:16px;border-top:1px solid var(--line);
}
.hall-shelf-label{
  font-family:var(--mono);font-size:9.5px;letter-spacing:.2em;
  color:var(--muted);flex:none;padding-bottom:2px;
}
.hall-shelf-list{
  display:flex;gap:10px;overflow-x:auto;scrollbar-width:none;
  -webkit-overflow-scrolling:touch;
}
.hall-shelf-list::-webkit-scrollbar{display:none}

.shelf-card{
  display:flex;align-items:center;gap:10px;flex:none;
  padding:6px 14px 6px 6px;border-radius:999px;
  border:1px solid var(--line);background:rgba(18,22,30,.55);
  backdrop-filter:blur(10px);transition:.18s;
}
.shelf-card:hover{border-color:rgba(201,162,39,.5);background:rgba(24,28,36,.8)}
.shelf-card img,.shelf-card .ph{
  width:36px;height:36px;border-radius:50%;object-fit:cover;flex:none;
}
.shelf-card .ph{
  background:repeating-linear-gradient(45deg,#242A33,#242A33 5px,#2B323C 5px,#2B323C 10px);
}
.shelf-card .nm{font-size:12px;letter-spacing:.02em;white-space:nowrap}
.shelf-card .mt{
  font-family:var(--mono);font-size:9px;letter-spacing:.06em;
  color:var(--muted);white-space:nowrap;
}
.shelf-empty{
  font-size:12px;color:var(--muted);padding:10px 0;
}
.shelf-empty a{color:var(--brass);border-bottom:1px solid rgba(201,162,39,.4)}

/* 兜底 ---------------------------------------------------------------- */
.hall-fallback{
  position:fixed;inset:0;z-index:80;display:grid;place-items:center;
  background:rgba(11,13,16,.96);padding:24px;
}
.hall-fallback[hidden]{display:none}
.hall-fallback-card{
  max-width:560px;border:1px solid var(--line-strong);border-radius:4px;
  padding:32px 34px;background:var(--ink-soft);
}
.hall-fallback-card h2{font-size:16px;margin-bottom:12px;letter-spacing:.02em}
.hall-fallback-card p{font-size:13px;line-height:1.8;color:var(--muted)}
.hall-fallback-hint{margin-top:14px;font-size:12px}
.hall-fallback code{
  font-family:var(--mono);font-size:11.5px;background:#000;
  padding:2px 6px;border-radius:2px;color:#B9C4D0;
}
.hall-fallback .btn-solid{display:inline-block;margin-top:22px}

/* 响应式 -------------------------------------------------------------- */
@media (max-width:900px){
  /* 模型让出上半屏，信息留在下方 */
  .hall-stage{inset:0 0 auto 0;height:56%}
  .hall-title{
    left:var(--pad-x);right:var(--pad-x);bottom:auto;top:56%;
    max-width:none;padding-top:20px;
  }
  .hall-title h1{font-size:34px}
  .hall-title p{margin-top:10px;font-size:12.5px;line-height:1.75}
  .hall-cta{margin-top:14px}
  .hall-actions .btn-ghost{display:none}
  .hall-views{
    right:var(--pad-x);bottom:auto;top:calc(56% - 52px);
    flex-direction:row;align-items:center;gap:8px;
  }
  .hall-views-label{display:none}
  .hall-views-btns{flex-direction:row}
  .hall-views-btns button{min-width:0;padding:6px 12px;font-size:11px}
  .hall-shelf{bottom:16px;left:var(--pad-x);right:var(--pad-x);gap:12px}
  .hall-shelf-label{display:none}
}