:root { color-scheme: light; font-family: Arial, Helvetica, sans-serif; --orange: #f7942d; --cream: #fffaf2; --sidebar-width: 235px; }
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body { background: var(--cream); color: #24170d; overflow: hidden; }
.mobile-header { display: none; }
.site-layout { display: grid; grid-template-columns: var(--sidebar-width) minmax(0, 1fr); height: 100%; }
.sidebar { background: linear-gradient(160deg, #ffa13d 0%, var(--orange) 68%, #df6c12 100%); border-right: 1px solid rgba(92,42,0,.2); padding: 24px 18px; overflow-y: auto; z-index: 30; }
.brand { display: block; margin: 0 8px 18px; }
.brand img { display: block; width: auto; height: 38px; }
nav { display: grid; gap: 5px; }
nav a { color: #1d130c; display: flex; align-items: center; min-height: 44px; padding: 9px 12px 9px 39px; border-radius: 9px; font-weight: 700; text-decoration: none; position: relative; }
nav a::before { content: ""; position: absolute; left: 12px; width: 0; height: 0; border-top: 7px solid transparent; border-bottom: 7px solid transparent; border-left: 14px solid #0fa74d; filter: drop-shadow(0 1px 1px rgba(0,0,0,.35)); }
nav a:hover, nav a:focus-visible, nav a.active { background: rgba(255,255,255,.58); outline: none; }
.sidebar-footer { border-top: 1px solid rgba(255,255,255,.7); font-size: .82rem; line-height: 1.45; margin: 26px 8px 0; padding-top: 18px; text-align: center; }
.content, iframe { width: 100%; height: 100%; min-width: 0; }
iframe { border: 0; display: block; background: #fff; }
.backdrop { display: none; }
@media (max-width: 760px) {
  .mobile-header { align-items: center; background: linear-gradient(90deg,#f7942d,#ffad55); box-shadow: 0 2px 10px rgba(0,0,0,.18); display: flex; height: 60px; justify-content: space-between; padding: env(safe-area-inset-top) 12px 0; position: relative; z-index: 40; }
  .menu-button { align-items: center; background: #fff8ee; border: 1px solid rgba(88,39,0,.25); border-radius: 9px; color: #3e220d; display: flex; font: 700 1rem Arial,sans-serif; gap: 7px; min-height: 44px; padding: 8px 12px; }
  .menu-button span:first-child { font-size: 1.35rem; line-height: 1; }
  .mobile-title { color: #3d210b; font-size: 1rem; font-weight: 700; padding: 12px; text-decoration: none; }
  .site-layout { display: block; height: calc(100% - 60px); }
  .sidebar { bottom: 0; box-shadow: 5px 0 20px rgba(0,0,0,.25); left: 0; max-width: 86vw; position: fixed; top: 60px; transform: translateX(-105%); transition: transform .22s ease; width: 290px; }
  .sidebar.open { transform: translateX(0); }
  .brand img { height: 34px; }
  .backdrop { background: rgba(0,0,0,.42); border: 0; bottom: 0; left: 0; position: fixed; right: 0; top: 60px; z-index: 20; }
  .backdrop.visible { display: block; }
}
@media (prefers-reduced-motion: reduce) { .sidebar { transition: none; } }