:root{--bg:#f6f4ef;--card:#fff;--soft:#efebe3;--line:#e4ded2;--ink:#1d1a16;--mute:#7d7568;--gold:#d4ae6c;--gold-d:#9c7637;--side:#18161a;--side-ink:#e9e3d6;--red:#c0392b;--amber:#b7791f;--green:#2f855a}
*{box-sizing:border-box;margin:0;padding:0}
html,body{background:var(--bg);color:var(--ink);font-family:"Be Vietnam Pro","Noto Sans Lao",system-ui,sans-serif;font-size:15px;-webkit-tap-highlight-color:transparent}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
.top{position:sticky;top:0;z-index:30;background:var(--side);color:var(--side-ink);display:flex;align-items:center;gap:8px;padding:10px 14px;padding-top:max(10px,env(safe-area-inset-top))}
.top .brand b{font-weight:700;font-size:16px}.top .brand small{display:block;color:var(--gold);font-size:10.5px;letter-spacing:.14em}
.sp{flex:1}
.pill{border:1px solid #fff3;border-radius:99px;padding:6px 11px;font-size:13px;color:var(--side-ink)}
.pill.on{background:var(--gold);color:#1d1a16;border-color:var(--gold)}
.wrap{max-width:1180px;margin:0 auto;padding:12px}
.grid{display:grid;gap:12px}
@media(min-width:900px){.grid{grid-template-columns:1.15fr 1fr;align-items:start}.stagecol{position:sticky;top:64px}}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px}
.card h3{font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:var(--gold-d);margin-bottom:10px;display:flex;align-items:center;gap:8px}
.card h3 .sp{flex:1}
.chips{display:flex;gap:6px;overflow-x:auto;padding-bottom:2px;scrollbar-width:none}
.chip{flex:none;border:1px solid var(--line);background:var(--card);border-radius:10px;padding:7px 11px;font-size:13px;white-space:nowrap}
.chip.on{background:var(--side);color:var(--side-ink);border-color:var(--side)}
.chip small{display:block;font-size:11px;opacity:.7}
.chip.add{border-style:dashed;color:var(--gold-d)}
.stage{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.tabs{display:flex;gap:4px;padding:8px;border-bottom:1px solid var(--line);align-items:center;flex-wrap:wrap}
.tab{padding:6px 12px;border-radius:8px;font-size:13px;font-weight:600;color:var(--mute)}
.tab.on{background:var(--soft);color:var(--ink)}
.tool{padding:6px 9px;border-radius:8px;font-size:12.5px;border:1px solid var(--line)}
.tool.on{background:var(--gold);border-color:var(--gold)}
.view{height:min(62vh,560px);position:relative;background:#ece8e0;overflow:hidden}
.view canvas{width:100%!important;height:100%!important}
html,body{overflow-x:hidden}
#v2d{padding:10px;color:#333;background:#fbfaf7}
#v3d{display:none}
#v3d canvas{display:block}
.lbl3d{position:absolute;inset:0;pointer-events:none}
.dim3d{background:#fffd;border:1px solid #9c7637;color:#5b4318;font-size:12px;font-weight:700;padding:1px 6px;border-radius:6px}
.hint{font-size:12px;color:var(--mute);padding:6px 10px;border-top:1px solid var(--line)}
.row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.row+.row{margin-top:10px}
.f{display:flex;flex-direction:column;gap:4px;flex:1;min-width:90px}
.f label{font-size:12px;color:var(--mute)}
.inp{border:1px solid var(--line);border-radius:9px;padding:9px 10px;background:#fff;width:100%;min-width:0}
.inp:focus{outline:2px solid var(--gold);border-color:transparent}
.inp.bad{border-color:var(--red);background:#fff5f4}
.step{display:flex;align-items:center;border:1px solid var(--line);border-radius:9px;overflow:hidden;background:#fff}
.step button{width:36px;height:38px;font-size:18px;color:var(--gold-d)}
.step span{min-width:30px;text-align:center;font-weight:700}
.seg{display:flex;border:1px solid var(--line);border-radius:9px;overflow:hidden}
.seg button{padding:7px 10px;font-size:12.5px;border-right:1px solid var(--line)}
.seg button:last-child{border-right:0}
.seg button.on{background:var(--side);color:var(--side-ink)}
.btn{background:var(--side);color:var(--side-ink);border-radius:10px;padding:10px 14px;font-weight:600;font-size:14px}
.btn.gold{background:var(--gold);color:#1d1a16}
.btn.ghost{background:var(--soft);color:var(--ink)}
.btn.sm{padding:7px 10px;font-size:13px}
.btn:disabled{opacity:.45}
.sw{display:grid;grid-template-columns:repeat(auto-fill,minmax(92px,1fr));gap:8px}
.swc{border:2px solid transparent;border-radius:11px;padding:4px;text-align:left;background:var(--soft)}
.swc.on{border-color:var(--gold-d);background:#fff}
.swc i{display:block;height:34px;border-radius:7px;border:1px solid #0001}
.swc span{display:block;font-size:11.5px;line-height:1.25;margin-top:4px}
.swc em{font-style:normal;font-size:11px;color:var(--mute)}
.swc.out{opacity:.38;pointer-events:none}
.swc.out span:after{content:" · hết";color:var(--red)}
.doorrow{display:grid;grid-template-columns:52px 1fr auto;gap:8px;align-items:center;margin-top:8px}
.doorrow b{font-size:13px}
.warn{border-radius:10px;padding:8px 10px;font-size:13px;margin-top:6px;display:flex;gap:8px;align-items:flex-start}
.warn.err{background:#fdecea;color:#8a2316}
.warn.warn{background:#fdf4e3;color:#7a4e0e}
.warn.ok{background:#e8f5ec;color:#22603d}
.warn button{margin-left:auto;flex:none;text-decoration:underline;font-size:12.5px;font-weight:600}
table.lines{width:100%;border-collapse:collapse;font-size:13px}
table.lines td,table.lines th{padding:6px 4px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
table.lines td.n,table.lines th.n{text-align:right;white-space:nowrap}
.badge{font-size:11px;background:var(--soft);border-radius:99px;padding:2px 8px;color:var(--gold-d);font-weight:600}
.foot{position:sticky;bottom:0;z-index:25;background:#fffffff2;backdrop-filter:blur(8px);border-top:1px solid var(--line);padding:10px 14px;padding-bottom:max(10px,env(safe-area-inset-bottom));display:flex;align-items:center;gap:10px}
.foot .tot b{font-size:19px}.foot .tot small{display:block;font-size:11.5px;color:var(--mute)}
.modal{position:fixed;inset:0;z-index:60;background:#0008;display:none;align-items:flex-end;justify-content:center}
.modal.on{display:flex}
.sheet{background:var(--bg);width:100%;max-width:640px;max-height:92vh;overflow:auto;border-radius:18px 18px 0 0;padding:16px;padding-bottom:max(16px,env(safe-area-inset-bottom))}
@media(min-width:700px){.modal{align-items:center}.sheet{border-radius:18px}}
.sheet h2{font-size:17px;margin-bottom:10px;display:flex;align-items:center}
.sheet h2 .x{margin-left:auto;font-size:22px;color:var(--mute)}
.tpl{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:10px}
.tpl button{background:#fff;border:1px solid var(--line);border-radius:12px;padding:8px;text-align:left}
.tpl .pv{height:120px;color:#333}
.tpl b{font-size:13px}
.refimg{max-width:100%;border-radius:10px;border:1px solid var(--line);background:#fff}
.toast{position:fixed;left:50%;bottom:90px;transform:translateX(-50%);background:var(--side);color:var(--side-ink);padding:10px 16px;border-radius:12px;z-index:90;font-size:14px;display:none;max-width:90vw}
.muted{color:var(--mute);font-size:12.5px}
.chk{display:flex;gap:8px;align-items:flex-start;font-size:14px;margin-top:10px}
.chk input{width:18px;height:18px;margin-top:2px;accent-color:var(--gold-d)}
.elev text{font-family:inherit}
details summary{cursor:pointer;font-weight:600;font-size:13.5px;padding:4px 0}
a.btn{text-decoration:none;display:inline-block}