/* a0030 — Offcanvas left + masonry (light) */
:root{
  --bg:#f3f4f8;
  --paper:#ffffff;
  --ink:#141b2d;
  --muted:#5b6478;
  --line:#e6e8f2;
  --brand:#6d28d9;
  --brand2:#2563eb;
  --radius:16px;
  --shadow:0 16px 44px rgba(20,27,45,.10);
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:radial-gradient(800px 420px at 10% 0%, rgba(109,40,217,.10), rgba(109,40,217,0)),var(--bg);color:var(--ink)}
a{color:inherit;text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1100px;margin:0 auto;padding:0 18px}

.mast{padding:16px 0;border-bottom:1px solid var(--line);background:linear-gradient(180deg,#fff,rgba(255,255,255,.7))}
.mast-row{display:flex;align-items:center;gap:14px}
.dual-logo{display:flex;align-items:center;gap:10px;flex:1;min-width:0}
#logo img{height:42px;width:auto;display:block}
.logo-text a{font-weight:900;letter-spacing:.2px}
.drawer-toggle,.drawer-close{border:1px solid var(--line);background:#fff;border-radius:12px;padding:10px 12px;font-weight:700;cursor:pointer}
.mast-slot{min-width:220px;text-align:right;color:var(--muted);font-size:13px}
.mast-tagline{padding:10px 0 0;color:var(--muted);font-size:14px}

.drawer-left{position:fixed;inset:0 auto 0 0;width:min(360px,92vw);z-index:50;display:block}
.drawer-left[hidden]{display:none}
.drawer-inner{height:100%;background:#fff;box-shadow:0 22px 70px rgba(0,0,0,.20);border-right:1px solid var(--line);display:flex;flex-direction:column}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:14px 14px;border-bottom:1px solid var(--line)}
.drawer-title{font-weight:900}
.drawer-list{list-style:none;margin:0;padding:10px 10px;display:flex;flex-direction:column;gap:6px}
.drawer-list a{display:block;padding:10px 10px;border-radius:12px;color:var(--muted)}
.drawer-list li.active a{background:rgba(109,40,217,.10);color:var(--brand)}
.drawer-foot{margin-top:auto;padding:12px 14px;border-top:1px solid var(--line);color:var(--muted);font-size:13px}
.drawer-backdrop{position:fixed;inset:0;background:rgba(20,27,45,.44)}

.masonry{padding:18px 0 26px}
.masonry-cols{columns:2 340px;column-gap:16px}
.brick{break-inside:avoid;margin:0 0 16px}
.brick-inner{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px;overflow:hidden}
.brick-inner.note{background:linear-gradient(180deg,rgba(109,40,217,.06),rgba(109,40,217,0)),#fff}
.brick-title{font-weight:900;color:var(--brand);margin-bottom:8px}

#footer{border-top:1px solid var(--line);background:#fff}
#footer .container{padding:18px}
#footer .social a{display:inline-flex;align-items:center;gap:8px;margin-right:8px;padding:8px 10px;border-radius:12px;border:1px solid var(--line)}
#footer p{margin:10px 0 0;color:var(--muted)}

.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

@media (max-width: 820px){
  .mast-slot{display:none}
  .masonry-cols{columns:1}
}