:root {
  --bg: #f6f7f9; --panel: #ffffff; --ink: #18202c; --muted: #5f6b7a; --line: #e2e6ec;
  --accent: #1f4fd6; --accent-ink: #fff; --ok: #1f8a4c; --warn: #b26a00; --bad: #c62828;
  --concept: #ff8a00; --radius: 10px;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font-size: 14px; line-height: 1.45; }
a { color: var(--accent); text-decoration: none; }
header.top { display: flex; align-items: baseline; gap: 18px; padding: 18px 28px; background: var(--panel); border-bottom: 1px solid var(--line); }
header.top h1 { font-size: 15px; letter-spacing: .14em; margin: 0; font-weight: 700; }
header.top .sub { color: var(--muted); font-size: 13px; }
header.top .pipeline { margin-left: auto; font: 12px ui-monospace, monospace; color: var(--muted); }
main { padding: 24px 28px 60px; max-width: 1500px; margin: 0 auto; }
.filters { display: flex; gap: 8px; margin-bottom: 18px; flex-wrap: wrap; }
.chip { border: 1px solid var(--line); background: var(--panel); padding: 5px 12px; border-radius: 99px; cursor: pointer; font-size: 13px; color: var(--muted); }
.chip.active { background: var(--ink); color: #fff; border-color: var(--ink); }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); gap: 20px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; }
.card .media { position: relative; aspect-ratio: 3/2; background: #e9ecf0; }
.card .media img, .card .media .mini { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.card .media .toggle { position: absolute; right: 10px; bottom: 10px; z-index: 3; }
.card .body { padding: 14px 16px 16px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.card h2 { font-size: 16px; margin: 0; }
.cat { font-size: 11px; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); }
.dims { font: 600 13px ui-monospace, monospace; }
.kv { display: grid; grid-template-columns: auto 1fr; gap: 2px 12px; font-size: 13px; color: var(--muted); }
.kv b { color: var(--ink); font-weight: 500; }
.formats { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 4px; }
.fmt { font: 11px ui-monospace, monospace; padding: 2px 7px; border-radius: 4px; background: #eef1f6; color: #334; }
.fmt.bim { background: #e4ecff; color: #1f3e9c; }
.actions { display: flex; gap: 8px; margin-top: auto; padding-top: 10px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 7px 13px; border-radius: 7px; border: 1px solid var(--line); background: var(--panel); color: var(--ink); cursor: pointer; font-size: 13px; font-weight: 500; }
.btn:hover { border-color: #b9c2cf; }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn.small { padding: 4px 9px; font-size: 12px; }
.btn.on { background: var(--ink); color: #fff; border-color: var(--ink); }
.badge { font-size: 11px; padding: 2px 8px; border-radius: 99px; font-weight: 600; }
.badge.ok { background: #e3f5ea; color: var(--ok); }
.badge.bad { background: #fde8e8; color: var(--bad); }
.badge.concept { background: #fff1e0; color: #a35600; }
.badge.context { background: #e8edf3; color: #4a5a70; }
/* detail */
.detail { display: grid; grid-template-columns: minmax(0, 1.7fr) minmax(360px, 1fr); gap: 22px; }
.viewer-wrap { position: relative; height: 620px; background: #eef0f3; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.viewer-wrap canvas { display: block; }
.labels { position: absolute; top: 0; left: 0; }
.dim-label { font: 600 12px ui-monospace, monospace; background: rgba(255,255,255,.9); padding: 1px 6px; border-radius: 4px; border: 1px solid #c8d0db; color: #1b2a41; pointer-events: none; }
.axis-label { font: 700 13px ui-monospace, monospace; pointer-events: none; }
.toolbar { display: flex; gap: 6px; flex-wrap: wrap; margin: 10px 0; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; margin-bottom: 16px; }
.panel h3 { margin: 0 0 10px; font-size: 13px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
td, th { text-align: left; padding: 5px 6px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 500; }
td.num { font-family: ui-monospace, monospace; text-align: right; white-space: nowrap; }
tr.sel td { background: #eaf0ff; }
tr.clickable { cursor: pointer; }
.render-img { width: 100%; border-radius: 8px; border: 1px solid var(--line); }
.note { font-size: 12.5px; color: var(--muted); }
.warnbox { border-left: 3px solid var(--concept); background: #fff8ef; padding: 8px 12px; font-size: 13px; border-radius: 4px; margin: 8px 0; }
.infobox { border-left: 3px solid var(--accent); background: #f1f5ff; padding: 8px 12px; font-size: 13px; border-radius: 4px; margin: 8px 0; }
.param-row { display: grid; grid-template-columns: 1fr 120px; gap: 8px; align-items: center; margin-bottom: 6px; }
.param-row input { width: 100%; padding: 5px 8px; border: 1px solid var(--line); border-radius: 6px; font-family: ui-monospace, monospace; text-align: right; }
.param-row small { color: var(--muted); }
details summary { cursor: pointer; color: var(--muted); }
code, .mono { font-family: ui-monospace, monospace; font-size: 12px; }
.hash { word-break: break-all; color: var(--muted); }
#selinfo { min-height: 20px; }
@media (max-width: 1050px) { .detail { grid-template-columns: 1fr; } .viewer-wrap { height: 460px; } }
/* nav */
.topnav { display: flex; gap: 4px; }
.topnav a { padding: 4px 10px; border-radius: 6px; color: var(--muted); font-size: 13px; }
.topnav a.active, .topnav a:hover { background: #eef1f6; color: var(--ink); }
/* structure page */
.st-body { overflow: hidden; }
.st-layout { display: grid; grid-template-columns: 320px minmax(0, 1fr) 0; height: calc(100vh - 57px); transition: grid-template-columns .2s ease; }
.st-layout.drawer-open { grid-template-columns: 320px minmax(0, 1fr) 420px; }
.st-left { overflow-y: auto; padding: 14px; border-right: 1px solid var(--line); background: var(--bg); }
.st-center { display: flex; flex-direction: column; padding: 14px; min-width: 0; overflow-y: auto; }
.st-viewer { flex: 1; min-height: 420px; height: auto; }
.st-empty { position: absolute; inset: 0; display: grid; place-items: center; color: var(--muted); z-index: 2; pointer-events: none; }
.st-right { position: relative; overflow-y: auto; background: var(--panel); border-left: 1px solid var(--line); padding: 0; }
.drawer-open .st-right { padding: 18px 20px 40px; }
.st-close { position: sticky; top: 0; float: right; z-index: 3; }
.st-h2 { font-size: 19px; margin: 4px 0 4px; }
.st-right section { margin-top: 18px; }
.st-right h3 { font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin: 0 0 8px; }
.st-right h4 { font-size: 12.5px; margin: 10px 0 4px; }
.st-right ul { margin: 0; padding-left: 18px; font-size: 13px; }
.st-right li { margin-bottom: 4px; }
.props th { width: 46%; font-weight: 500; }
.mat { border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; margin-bottom: 10px; }
.mat-h { margin-bottom: 6px; }
.refs { font-size: 12px; color: var(--muted); margin: 8px 0 0; }
.disclaimer { border-top: 1px solid var(--line); padding-top: 10px; margin-top: 20px; }
.st-title { font-weight: 600; font-size: 15px; }
.drop { display: block; border: 1.5px dashed #b9c2cf; border-radius: 8px; padding: 18px 12px; text-align: center; cursor: pointer; background: #fafbfc; }
.drop.over { border-color: var(--accent); background: #f1f5ff; }
table.mini td { padding: 3px 4px; font-size: 12px; }
.plan2d { width: 100%; height: 240px; background: #fff; border: 1px solid var(--line); border-radius: 6px; }
.plan2d .p-room { fill: #f4f6f9; stroke: none; cursor: pointer; }
.plan2d .p-wall { fill: #3b4656; cursor: pointer; }
.plan2d .p-col { fill: #8a8f99; cursor: pointer; }
.plan2d .p-furn { fill: #e9d9bf; stroke: #a68a5b; stroke-width: 15; cursor: pointer; }
.plan2d .p-door { stroke: #2a9d3f; stroke-width: 140; cursor: pointer; }
.plan2d .p-window { stroke: #1d8bd6; stroke-width: 140; cursor: pointer; }
.plan2d .p-label { font: 320px Inter, sans-serif; fill: #5f6b7a; text-anchor: middle; pointer-events: none; }
.plan2d .sel { fill: #2563eb !important; stroke: #2563eb !important; }
.search { width: 100%; padding: 6px 9px; border: 1px solid var(--line); border-radius: 6px; margin-bottom: 8px; }
.grp { font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin: 10px 0 4px; }
#list .row { display: grid; grid-template-columns: 18px 1fr auto; gap: 6px; padding: 4px 6px; border-radius: 5px; cursor: pointer; font-size: 13px; }
#list .row:hover { background: #eef1f6; }
#list .row.sel { background: #e4ecff; }
.st-render { margin-top: 10px; }
.st-render img { width: 100%; border-radius: 8px; border: 1px solid var(--line); }
.spin { display: inline-block; width: 11px; height: 11px; border: 2px solid #c8d0db; border-top-color: var(--accent); border-radius: 50%; animation: sp 0.8s linear infinite; vertical-align: -1px; }
@keyframes sp { to { transform: rotate(360deg); } }
@media (max-width: 1100px) {
  .st-body { overflow: auto; }
  .st-layout, .st-layout.drawer-open { grid-template-columns: 1fr; height: auto; }
  .st-viewer { height: 60vh; flex: none; }
  .st-right { position: fixed; top: 0; right: 0; bottom: 0; width: min(420px, 100vw); transform: translateX(100%); transition: transform .2s; z-index: 20; box-shadow: -8px 0 24px rgba(0,0,0,.12); }
  .drawer-open .st-right { transform: none; }
}
.st-right h4.eco { color: #2f6b2a; }
.st-empty[hidden] { display: none; }
/* login */
.login-body { display: grid; place-items: center; min-height: 100vh; }
.login-box { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 30px; width: min(380px, calc(100vw - 32px)); }
.login-box h1 { font-size: 15px; letter-spacing: .14em; margin: 0 0 6px; }
.login-box form { display: grid; gap: 12px; margin-top: 14px; }
.login-box label { display: grid; gap: 4px; font-size: 13px; color: var(--muted); }
.login-box input { padding: 8px 10px; border: 1px solid var(--line); border-radius: 7px; font-size: 14px; }
.login-msg { color: var(--bad); font-size: 13px; min-height: 18px; }
.logout { margin-left: 8px; border: 0; background: none; color: var(--muted); cursor: pointer; font-size: 13px; padding: 4px 10px; border-radius: 6px; }
.logout:hover { background: #eef1f6; color: var(--ink); }