.inv{--card:#fff;--soft:var(--paper-2);--ok:#2f6b4f;--ok-soft:#dff0e6;max-width:760px;padding-inline:max(16px, env(safe-area-inset-left,0px)) max(16px, env(safe-area-inset-right,0px));margin:0 auto;padding-block:20px 80px;font-size:16px;line-height:1.55}.inv h1{letter-spacing:-.04em;margin:6px 0 10px;font-size:clamp(28px,6vw,38px);font-weight:800;line-height:1.04}.inv h2{letter-spacing:-.03em;margin:0 0 6px;font-size:21px;font-weight:750;line-height:1.2}.inv h3{letter-spacing:-.015em;margin:0;font-size:17px;font-weight:700;line-height:1.3}.inv p{max-width:66ch;margin:0 0 12px}.inv .eyebrow{text-transform:uppercase;letter-spacing:.09em;color:var(--brass-text);font-size:12px;font-weight:700}.inv .lead{color:var(--ink);font-size:18px;font-weight:500}.inv .muted{color:var(--muted);font-size:14px}.inv section{margin-top:28px}.inv .card{background:var(--card);border:1px solid var(--rule);border-radius:var(--r-lg);margin-bottom:12px;padding:18px}.inv .grid{grid-template-columns:1fr 1fr;gap:12px;display:grid}.inv .grid.g3{grid-template-columns:2fr 2fr 1fr}.inv .f{color:var(--muted);flex-direction:column;gap:5px;font-size:13px;font-weight:600;display:flex}.inv input[type=text],.inv input[type=number],.inv input[type=search],.inv textarea{font:inherit;color:var(--ink);background:var(--card);border:1px solid var(--rule);border-radius:var(--r);width:100%;min-width:0;padding:10px 12px;font-size:16px}.inv textarea{resize:vertical;min-height:84px}.inv input:focus,.inv textarea:focus,.inv button:focus-visible,.inv summary:focus-visible{outline:2px solid var(--brass);outline-offset:2px}.inv .btn{font:inherit;border:1px solid var(--ink);background:var(--ink);color:var(--paper);cursor:pointer;border-radius:999px;padding:10px 18px;font-size:15px;font-weight:700}.inv .btn.sec{color:var(--ink);background:0 0}.inv .actions{flex-wrap:wrap;gap:8px;margin-top:12px;display:flex}.inv .search{position:relative}.inv .sugg{background:var(--card);border:1px solid var(--rule);z-index:3;border-radius:12px;max-height:260px;position:absolute;top:calc(100% + 4px);left:0;right:0;overflow:auto}.inv .sugg button{width:100%;font:inherit;text-align:left;border:0;border-bottom:1px solid var(--rule);color:var(--ink);cursor:pointer;background:0 0;justify-content:space-between;gap:12px;padding:10px 14px;font-size:15px;display:flex}.inv .sugg button:last-child{border-bottom:0}.inv .sugg button:hover{background:var(--soft)}.inv .chips{flex-wrap:wrap;gap:8px;display:flex}.inv .chip{font:inherit;border:1px solid var(--ink);background:var(--ink);color:var(--paper);cursor:pointer;border-radius:999px;padding:7px 13px;font-size:14px;font-weight:600}.inv .tag{letter-spacing:.06em;text-transform:uppercase;border:1px solid var(--rule);color:var(--muted);white-space:nowrap;border-radius:999px;padding:3px 9px;font-size:11px;font-weight:700;display:inline-block}.inv .tag.both{color:var(--ok);border-color:var(--ok)}.inv .facts{grid-template-columns:1fr 1fr;gap:10px 18px;margin:0;padding:0;list-style:none;display:grid}.inv .facts li{align-items:flex-start;gap:10px;font-size:15px;display:flex}.inv .facts input{width:18px;height:18px;accent-color:var(--brass);flex:none;margin-top:5px}.inv .facts small{color:var(--muted);font-size:13px;display:block}.inv .sys .head{flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:10px;margin-bottom:10px;display:flex}.inv .sys .cat{text-transform:uppercase;letter-spacing:.09em;color:var(--brass-text);font-size:12px;font-weight:700}.inv .ask{background:var(--soft);border-radius:12px;margin-bottom:12px;padding:12px 14px}.inv .ask b{color:var(--muted);text-transform:uppercase;letter-spacing:.06em;margin-bottom:2px;font-size:13px;display:block}.inv .ask .unit{letter-spacing:-.02em;font-size:19px;font-weight:750;line-height:1.3}.inv ol.how{margin:0 0 12px;padding-left:22px;list-style:decimal}.inv ol.how li{margin-bottom:6px}.inv .tip{border-left:3px solid var(--brass);color:var(--muted);margin-bottom:12px;padding:2px 0 2px 12px;font-size:14px}.inv .jot{grid-template-columns:1fr 1fr;gap:10px;display:grid}.inv .calc{background:var(--ok-soft);color:var(--ok);border-radius:10px;grid-column:1/-1;padding:8px 12px;font-size:14px;font-weight:600}.inv details.also{margin-top:12px;font-size:14px}.inv details.also summary{cursor:pointer;font-weight:700}.inv details.also ul{color:var(--muted);margin:8px 0 0;padding-left:20px;list-style:outside}.inv .summary{white-space:pre-wrap;background:var(--soft);border-radius:12px;margin:10px 0;padding:14px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px;overflow-x:auto}.inv .linkbox{background:var(--paper);border:1px solid var(--rule);word-break:break-all;border-radius:12px;padding:12px 14px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px}.inv .map{gap:6px;margin-top:10px;display:grid}.inv .map div{grid-template-columns:1fr auto 1fr;align-items:center;gap:8px;font-size:14px;display:grid}.inv .map div span:nth-child(2){color:var(--muted)}.inv .map .no{color:var(--brass-text)}.inv .sub{margin:16px 0 6px}.inv-toast{left:50%;bottom:calc(20px + env(safe-area-inset-bottom,0px));background:var(--ink);max-width:calc(100% - 32px);color:var(--paper);z-index:6;border-radius:999px;padding:10px 16px;font-size:14px;position:fixed;transform:translate(-50%)}@media (width<=560px){.inv .facts,.inv .jot,.inv .grid,.inv .grid.g3{grid-template-columns:1fr}}.inv .intro-video{margin:6px 0 28px}.inv .intro-video video{aspect-ratio:16/9;background:var(--ink);border:1px solid var(--rule);border-radius:var(--r-lg);width:100%;height:auto;display:block}.inv .intro-video figcaption{margin-top:8px;font-size:14px}