*{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0f1420; --panel:#161d2b; --line:#26314a; --ink:#e8edf6; --dim:#93a0b8;
  --accent:#58a6ff; --warm:#e8a33d; --good:#5ee6a0;
}
html,body{height:100%}
body{
  font-family:-apple-system,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  background:radial-gradient(1200px 700px at 70% -10%,#1b2740,#0d1220 60%);
  color:var(--ink); overflow-x:hidden;
}
.wrap{max-width:1180px;margin:0 auto;padding:18px 16px 40px}

/* header */
.hd{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:14px}
.logo{width:46px;height:46px;border-radius:12px;background:linear-gradient(135deg,#e8a33d,#c77e93);
  display:grid;place-items:center;font-size:26px;box-shadow:0 6px 18px rgba(232,163,61,.3)}
.hd h1{font-size:20px;letter-spacing:.5px}
.hd .sub{font-size:12px;color:var(--dim);margin-top:2px}
.hd .spacer{flex:1}
.hd .help{border:1px solid var(--line);background:var(--panel);color:var(--dim);
  padding:8px 12px;border-radius:9px;font-size:12px;cursor:pointer}
.hd .help:hover{color:var(--ink);border-color:var(--accent)}
.tagline{font-size:12.5px;color:var(--warm);margin:-6px 0 12px;display:flex;gap:6px;align-items:center}

/* zone tabs */
.tabs{display:flex;gap:8px;margin-bottom:12px;flex-wrap:wrap}
.tab{border:1px solid var(--line);background:var(--panel);color:var(--dim);
  padding:9px 16px;border-radius:10px;cursor:pointer;font-size:13.5px;font-weight:600;transition:.15s}
.tab .d{font-size:11px;font-weight:400;opacity:.75;display:block;margin-top:1px}
.tab:hover{color:var(--ink)}
.tab.on{background:linear-gradient(135deg,#22304c,#182338);border-color:var(--accent);color:#fff;
  box-shadow:0 4px 14px rgba(88,166,255,.22)}

/* stage */
.stage-wrap{position:relative;border-radius:16px;overflow:hidden;border:1px solid var(--line);
  box-shadow:0 12px 40px rgba(0,0,0,.4);background:#0a0e17}
#office{display:block;width:100%;aspect-ratio:16/9;touch-action:none}
.hint{position:absolute;left:12px;bottom:10px;right:12px;font-size:11.5px;color:rgba(255,255,255,.72);
  background:rgba(10,14,22,.5);backdrop-filter:blur(4px);padding:6px 10px;border-radius:8px;pointer-events:none;
  display:flex;gap:14px;flex-wrap:wrap}
.hint b{color:#ffe09a}
.zdesc{position:absolute;left:12px;top:12px;font-size:12px;color:rgba(255,255,255,.8);
  background:rgba(10,14,22,.45);padding:5px 10px;border-radius:8px;pointer-events:none}

/* case rail */
.rail-h{margin:18px 2px 10px;font-size:14px;color:var(--dim);display:flex;align-items:center;gap:8px}
.rail-h b{color:var(--ink);font-size:15px}
.rail{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:12px}
.ccard{border:1px solid var(--line);background:var(--panel);border-radius:13px;padding:13px;cursor:pointer;
  transition:.15s;position:relative;overflow:hidden}
.ccard:hover{transform:translateY(-3px);border-color:var(--accent);box-shadow:0 8px 22px rgba(0,0,0,.35)}
.ccard .ic{font-size:26px}
.ccard h3{font-size:14.5px;margin:6px 0 3px}
.ccard .tg{font-size:12px;color:var(--dim);line-height:1.5;min-height:34px}
.ccard .go{margin-top:8px;font-size:12px;color:var(--good);font-weight:600}
.ccard .cast{position:absolute;right:10px;top:10px;font-size:14px;opacity:.5}

/* generic overlay */
.cp-overlay,.dv-overlay{position:fixed;inset:0;background:rgba(6,9,15,.72);backdrop-filter:blur(6px);
  z-index:50;display:flex;align-items:center;justify-content:center;padding:16px}
.dv-overlay{z-index:60}

/* case player */
.cp-modal{width:min(760px,100%);max-height:92vh;background:var(--panel);border:1px solid var(--line);
  border-radius:18px;display:flex;flex-direction:column;overflow:hidden;position:relative;box-shadow:0 20px 60px rgba(0,0,0,.5)}
.cp-x,.dv-x{position:absolute;right:12px;top:12px;z-index:5;width:32px;height:32px;border-radius:8px;
  border:1px solid var(--line);background:rgba(0,0,0,.3);color:var(--dim);cursor:pointer;font-size:15px}
.cp-x:hover,.dv-x:hover{color:#fff;border-color:#f66}
.cp-head{display:flex;align-items:center;gap:12px;padding:16px 18px 8px}
.cp-icon{font-size:30px}
.cp-title{font-size:17px;font-weight:700}
.cp-tag{font-size:12px;color:var(--dim);margin-top:2px}
.cp-problem{margin:0 18px;padding:10px 12px;background:#0f1626;border:1px solid var(--line);border-radius:10px;font-size:12.5px;color:#cdd6e6;line-height:1.6}
.cp-problem b{color:var(--warm);display:block;margin-bottom:3px;font-size:12px}
.cp-stage{width:100%;height:150px;display:block;margin-top:10px;background:#dbe2ea}
.cp-chat{flex:1;overflow-y:auto;padding:14px 18px;display:flex;flex-direction:column;gap:12px;min-height:180px;background:#0d1320;cursor:pointer}
.cp-note{align-self:center;font-size:12px;color:var(--dim);background:#141c2e;border:1px solid var(--line);
  padding:5px 14px;border-radius:20px}
.cp-msg{display:flex;gap:9px;max-width:82%;align-items:flex-end}
.cp-msg.right{align-self:flex-end;flex-direction:row-reverse}
.cp-av{width:44px;height:48px;flex-shrink:0;background:#e9eef5;border-radius:9px;overflow:hidden;
  display:grid;place-items:end center;border:1px solid var(--line)}
.cp-bub{background:#182236;border:1px solid var(--line);border-left:3px solid var(--ac);
  border-radius:12px;padding:8px 12px;font-size:13.5px;line-height:1.6}
.cp-msg.right .cp-bub{border-left:none;border-right:3px solid var(--ac)}
.cp-msg.think .cp-bub{background:#141a26;border-style:dashed;color:#aeb9cc;font-style:italic}
.cp-msg.action .cp-bub{background:#12212a}
.cp-who{font-size:11px;color:var(--warm);font-weight:700;margin-bottom:3px}
.cp-who span{color:var(--dim);font-weight:400;margin-left:6px;font-size:10px}
.cp-thinklbl{font-size:10px;color:#7d8aa2;margin-top:4px}
.cp-bar{height:6px;background:#0c1420;border-radius:4px;margin-top:7px;overflow:hidden}
.cp-bar>i{display:block;height:100%;width:0;background:linear-gradient(90deg,#58a6ff,#5ee6a0);border-radius:4px;transition:width .1s}
.cp-ctrl{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 18px;border-top:1px solid var(--line);background:var(--panel);flex-wrap:wrap}
.cp-dots{display:flex;gap:5px;flex-wrap:wrap}
.cp-dot{width:8px;height:8px;border-radius:50%;background:#2a3448;transition:.2s}
.cp-dot.on{background:var(--accent)}
.cp-btns{display:flex;gap:8px;flex-wrap:wrap}
.cp-btns button{border:1px solid var(--line);background:#1b2740;color:var(--ink);
  padding:8px 14px;border-radius:9px;cursor:pointer;font-size:12.5px;font-weight:600}
.cp-btns button:hover{border-color:var(--accent)}
.cp-result{border-color:var(--good)!important;color:var(--good)!important}
.cp-result.glow{animation:glow 1.3s infinite;background:#12281c!important}
@keyframes glow{0%,100%{box-shadow:0 0 0 0 rgba(94,230,160,.5)}50%{box-shadow:0 0 0 8px rgba(94,230,160,0)}}

/* deliverable */
.dv-modal{width:min(720px,100%);max-height:90vh;overflow-y:auto;background:#0f1524;border:1px solid var(--line);
  border-radius:18px;padding:24px;position:relative;box-shadow:0 20px 60px rgba(0,0,0,.5)}
.dv-badge{display:inline-block;font-size:11px;color:var(--good);border:1px solid #234a35;background:#0f2418;
  padding:4px 10px;border-radius:20px;margin-bottom:10px}
.dv-title{font-size:21px;margin-bottom:10px}
.dv-summary{background:#15243a;border:1px solid var(--line);border-radius:10px;padding:12px 14px;
  font-size:14px;line-height:1.7;color:#dbe6f6;margin-bottom:16px}
.dv-summary b{color:var(--warm)}
.dv-sec{margin-bottom:16px}
.dv-sec h3{font-size:14px;color:var(--accent);margin-bottom:6px;border-left:3px solid var(--accent);padding-left:9px}
.dv-sec p{font-size:13.5px;line-height:1.75;color:#c6d0e0}
.dv-table{width:100%;border-collapse:collapse;font-size:13px;margin-top:4px}
.dv-table th{background:#18243a;padding:8px 10px;text-align:left;color:var(--dim);border:1px solid var(--line);font-weight:600}
.dv-table td{padding:8px 10px;border:1px solid var(--line);color:#cdd8e8}
.dv-table td.hl{color:var(--good);font-weight:700;background:#0f2418}
.dv-chart{width:100%;height:auto;background:#0b1120;border-radius:10px;border:1px solid var(--line);margin-top:4px}
.dv-legend{display:flex;gap:16px;margin-top:8px;font-size:12px;color:var(--dim)}
.dv-legend i{display:inline-block;width:11px;height:11px;border-radius:3px;margin-right:5px;vertical-align:middle}
.dv-foot{margin-top:8px;font-size:11px;color:var(--dim);text-align:center;border-top:1px solid var(--line);padding-top:12px}

/* help */
.help-body{font-size:13px;line-height:1.8;color:#cdd8e8}
.help-body code{background:#0b1120;border:1px solid var(--line);padding:1px 6px;border-radius:5px;color:#8fd0ff;font-size:12px}
.help-body pre{background:#0b1120;border:1px solid var(--line);border-radius:10px;padding:12px;overflow-x:auto;font-size:11.5px;margin:10px 0;color:#a8c7e8;line-height:1.55}
.help-body h3{color:var(--warm);font-size:14px;margin:14px 0 6px}

@media(max-width:640px){
  .cp-stage{height:120px}
  .hd h1{font-size:17px}
  .hint{font-size:10.5px}
}