:root{
  --bg: #f4f7fb;
  --panel: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --border: #dbe7f6;
  --accent: #4f46e5;
  --accent2: #22c55e;
  --shadow: 0 18px 50px rgba(15,23,42,.12);
  --radius: 18px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:radial-gradient(900px 520px at 20% 0%, rgba(79,70,229,.14), transparent 60%), var(--bg);color:var(--text);font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", sans-serif;}
a{color:inherit}
.container{max-width:1120px;margin:0 auto;padding:0 18px}

.drawer{position:fixed;inset:0;pointer-events:none;z-index:20}
.drawer.is-open{pointer-events:auto}
.drawer::before{content:"";position:absolute;inset:0;background:rgba(15,23,42,.34);opacity:0;transition:opacity .2s ease}
.drawer.is-open::before{opacity:1}
.drawer-nav{position:absolute;left:0;top:0;bottom:0;width:320px;max-width:86vw;background:var(--panel);border-right:1px solid var(--border);transform:translateX(-102%);transition:transform .22s ease;box-shadow:var(--shadow);padding:16px;overflow:auto}
.drawer.is-open .drawer-nav{transform:translateX(0)}
.drawer-head{font-weight:900;margin-bottom:12px}
.drawer-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:6px}
.drawer-list a{text-decoration:none;display:block;padding:10px 12px;border-radius:14px;border:1px solid var(--border)}
.drawer-list li.active a{border-color:rgba(79,70,229,.45);box-shadow:0 0 0 3px rgba(79,70,229,.14)}
.drawer-slot{margin-top:14px;padding-top:12px;border-top:1px dashed var(--border)}

#top{position:sticky;top:0;z-index:10;background:rgba(244,247,251,.86);backdrop-filter: blur(10px) saturate(1.1);border-bottom:1px solid var(--border)}
.top-inner{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:14px 18px}
.menu{border:1px solid var(--border);background:var(--panel);border-radius:14px;padding:10px 12px;cursor:pointer}

.brand{display:flex;align-items:center;gap:14px;min-width:260px}
.logo-img #logo img{width:40px;height:40px;object-fit:contain;display:block}
.logo-text #logo a{text-decoration:none;font-weight:900;letter-spacing:.2px}
.tagline{color:var(--muted);font-size:.95rem}

.panes{display:grid;grid-template-columns: 300px 1fr;gap:16px;padding:22px 18px 26px 18px}
#tools{display:flex;flex-direction:column;gap:12px}
.tool-card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:14px}
.tool-title{font-weight:900;margin-bottom:10px}
.tool-list{list-style:none;padding:0;margin:0}
.tool-list li + li{margin-top:6px}
.tool-list a{text-decoration:none;color:var(--accent)}
.tool-list a:hover{text-decoration:underline}

.content{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px;min-height:240px}

#footer{border-top:1px solid var(--border);background:rgba(255,255,255,.68)}
#footer .container{padding:22px 18px}
.social{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:10px}
.social a{display:inline-flex;align-items:center;gap:8px;padding:8px 10px;border:1px solid var(--border);border-radius:12px;text-decoration:none;background:#fff}
.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: 980px){
  .panes{grid-template-columns: 1fr}
}