:root{
  --bg:#0b0e12;
  --elev:#10151b;
  --card:#141b23;
  --text:#e8edf5;
  --muted:#9fb1c9;
  --brand:#4fa3ff;
  --brand2:#19c5aa;
  --border:#223243;
  --radius:16px;
  --shadow:0 10px 30px rgba(0,0,0,.35);
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  background:transparent;
  color:var(--text);
  font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,Helvetica,Arial;
  line-height:1.68;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
.revit-wrap{width:100%;max-width:100%;margin:0;padding:0 16px 18px}
.hero-banner{
  margin:10px 0 14px;
  padding:24px 18px;
  border-radius:24px;
  border:1px solid var(--border);
  background:
    radial-gradient(circle at top right, rgba(79,163,255,.2), transparent 35%),
    radial-gradient(circle at bottom left, rgba(25,197,170,.18), transparent 35%),
    linear-gradient(180deg, rgba(20,27,35,.98), rgba(11,14,18,.98));
  box-shadow:var(--shadow);
}
.hero-label{font-size:.82rem;font-weight:900;letter-spacing:.14em;color:var(--brand2);text-transform:uppercase;margin-bottom:10px}
.revit-title{margin:0;font-size:clamp(1.95rem,4vw,2.9rem);font-weight:900;letter-spacing:.3px;line-height:1.08}
.revit-subtitle{margin:.5rem 0 0;color:#d5deea;max-width:980px}
.revit-article{
  width:100%;
  max-width:100%;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:20px;
}
.lead{font-size:1.08rem;color:#d7deea;margin-top:0}
.revit-article h2{font-size:1.42rem;margin:1.35rem 0 .65rem;line-height:1.2}
.revit-article h3{font-size:1.04rem;margin:.1rem 0 .45rem;color:#fff}
.muted{color:var(--muted)}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:12px;margin:.7rem 0}
.card{background:linear-gradient(180deg, rgba(16,21,27,.96), rgba(11,14,18,.96));border:1px solid var(--border);border-radius:14px;padding:13px}
.card p:last-child,.card ul:last-child{margin-bottom:0}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}
.chip{display:inline-flex;align-items:center;gap:.35rem;padding:.38rem .65rem;border-radius:999px;background:rgba(16,21,27,.86);border:1px solid var(--border);font-weight:700}
.toc,details{
  border:1px solid var(--border);
  border-radius:14px;
  background:var(--elev);
  padding:12px 14px;
}
.toc summary,details>summary{cursor:pointer;font-weight:800;list-style:none}
details>summary::-webkit-details-marker{display:none}
ul,ol{padding-left:1.25rem}
li+li{margin-top:.26rem}
.highlight,.note,.closing{border:1px solid var(--border);border-radius:12px;padding:12px 14px;margin:.95rem 0}
.highlight{background:linear-gradient(90deg, rgba(79,163,255,.12), rgba(25,197,170,.08));font-weight:700}
.note{border-left:4px solid var(--brand2);background:rgba(25,197,170,.08)}
.closing{background:rgba(79,163,255,.1);font-weight:800}
.table-wrap{overflow:auto}
table{width:100%;border-collapse:collapse;border:1px solid var(--border);border-radius:12px;overflow:hidden;margin:.7rem 0}
th,td{padding:11px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top}
thead th{background:color-mix(in oklab,var(--brand)18%,transparent)}
html{scrollbar-color:color-mix(in oklab,var(--brand)70%,var(--brand2)) var(--elev);scrollbar-width:thin}
*::-webkit-scrollbar{width:10px;height:10px}
*::-webkit-scrollbar-track{background:var(--elev);border-left:1px solid var(--border)}
*::-webkit-scrollbar-thumb{background:linear-gradient(180deg,var(--brand),var(--brand2));border-radius:10px;border:2px solid var(--elev)}
@media (max-width:760px){
  .revit-title{font-size:1.62rem}
  .hero-banner{padding:20px 14px;border-radius:20px}
  .revit-wrap{padding:0 12px 18px}
  .revit-article{padding:15px}
}