:root{
  --bg:#ffffff; --panel:#fafafa; --text:#1e2432; --muted:#5d6b7a;
  --primary:#184a8c; --primary-weak:#e8f0fe; --border:#e6e8eb;
  --ok:#1a7f37; --warn:#b58400; --err:#b72c2c;
  --mono:ui-monospace,Menlo,Consolas,monospace;
  --sans:Arial;
  --serif:Charter,Georgia,serif;
  --radius:14px; --shadow:0 1px 2px rgba(0,0,0,.05),0 8px 24px rgba(0,0,0,.06);
}
@media (prefers-color-scheme: dark){
  :root{ --bg:#0b1020; --panel:#0f1528; --text:#e5e7eb; --muted:#a3aab6;
         --primary:#6ea8ff; --primary-weak:#0f203f; --border:#223355;
         --ok:#6bd18b; --warn:#ffd166; --err:#ff8383; --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.35);}
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);line-height:1.55}
.container{max-width:1200px;margin:0 auto;padding:20px}
.site-header{position:sticky;top:0;background:var(--bg);border-bottom:1px solid var(--border);z-index:10}
.header-inner{display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;gap:12px;align-items:center;text-decoration:none;color:inherit}
.logo{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,#2b6cb0,#63b3ed);box-shadow:var(--shadow)}
.brand-title{font-family: var(--sans);}
.brand-sub{font-size:12px;color:var(--muted)}
.nav a{margin-left:16px;color:var(--muted);text-decoration:none}
.nav a:hover{color:var(--text)}
.page{margin-top:16px}

.hero{padding:28px;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
.hero h1{font-family: var(--sans);}
.lead{color:var(--muted)}
.hero-actions{margin-top:12px}
.hero-search{display:flex;gap:8px;flex-wrap:wrap}
.hero-search input,.hero-search select{padding:10px;border:1px solid var(--border);border-radius:10px}
.hero-search button{padding:10px 16px;border:none;background:var(--primary);color:#fff;border-radius:10px;cursor:pointer}
.btn{display:inline-block;padding:8px 12px;border-radius:10px;border:1px solid var(--border);background:var(--primary-weak);color:var(--primary);text-decoration:none}
.quick .btn{margin-right:8px}

.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:16px}
@media (max-width: 900px){ .grid{grid-template-columns:1fr} }
.card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px}
.bullets{margin:8px 0 0 18px}
.muted{color:var(--muted)} .small{font-size:12px} .mono{font-family:var(--mono)}

.row{display:flex;gap:12px;align-items:flex-end;flex-wrap:wrap}
.row input,.row select{padding:10px;border:1px solid var(--border);border-radius:10px}
.btn-secondary{padding:8px 12px;border-radius:10px;background:var(--primary-weak);color:var(--primary);border:1px solid var(--border)}
.grow{flex:1}

.pill{display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border-radius:999px;border:1px solid var(--border);background:#fff}
@media (prefers-color-scheme: dark){ .pill{background:#0b1020} }
.dot{width:10px;height:10px;border-radius:50%}
.ok{background:var(--ok)} .warn{background:var(--warn)} .err{background:var(--err)}

.tabs{display:flex;gap:8px;margin-top:10px}
.tab{padding:8px 12px;border:1px solid var(--border);background:transparent;border-radius:10px;cursor:pointer}
.tab.active{background:#fff}
@media (prefers-color-scheme: dark){ .tab.active{background:#0b1020} }
.tab-panel{display:none;margin-top:10px}
.tab-panel.active{display:block}

.preview img{max-width:100%;border:1px solid var(--border);border-radius:10px}
.preview object{width:100%;height:640px;border:1px solid var(--border);border-radius:10px;background:#fff}
.site-footer{border-top:1px solid var(--border);margin-top:24px}
.foot-inner{display:flex;justify-content:space-between;align-items:center}