:root{--bg:#ffffff;--ink:#0f172a;--muted:#475569;--brand:#0f172a;--accent:#1d4ed8;--accent-2:#f59e0b;--panel:#f8fafc;--border:#e5e7eb;--radius:14px;--shadow:0 10px 30px rgba(2,6,23,.06);}
*{box-sizing:border-box} html,body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.5 system-ui,Inter,Segoe UI,Roboto,Arial}
a{color:#1e40af;text-decoration:none} a:hover{text-decoration:underline}
.container{max-width:1140px;margin:0 auto;padding:0 16px}
.site-header{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.96);backdrop-filter:saturate(140%) blur(4px);border-bottom:1px solid var(--border)}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:8px 0}
.brand{display:flex;align-items:center;gap:14px}
.brand .title{font:800 22px/1 'Trebuchet MS',Verdana,Arial;color:var(--brand)}
.brand img.logo{height:56px;border-radius:10px;border:1px solid var(--border);box-shadow:var(--shadow);object-fit:cover}
.menu-btn{display:none;border:0;border-radius:10px;padding:10px 12px;background:linear-gradient(#60a5fa,#2563eb);color:#fff;font-weight:700}
nav ul{margin:0;padding:0;list-style:none;display:flex;gap:10px}
nav a{display:block;padding:8px 12px;border:1px solid var(--border);border-radius:10px;background:linear-gradient(#fff,#f5f6f8);box-shadow:0 2px 0 #d1d5db;font-weight:600}
nav a:hover{background:linear-gradient(#fff,#eceff3)}
@media (max-width:780px){.menu-btn{display:inline-flex} nav ul{display:none} nav ul.open{display:flex;flex-direction:column;gap:8px;padding-bottom:12px}}
.hero{border-bottom:1px solid var(--border);background:#fff}
.hero .wrap{display:grid;grid-template-columns:1.1fr 1fr;gap:22px;align-items:center;padding:22px 0}
.hero h1{font:800 38px/1.15 'Trebuchet MS',Verdana,Arial;margin:0;color:var(--brand)}
.hero p{color:var(--muted);margin:8px 0 0} .hero .img{border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);background:#fff;padding:6px}
.hero .img img{display:block;width:100%;height:auto;border-radius:10px}
@media (max-width:980px){.hero .wrap{grid-template-columns:1fr} .hero h1{font-size:30px}}
.main{margin:22px 0}
.grid{display:grid;grid-template-columns:320px 1fr;gap:22px}
@media (max-width:1060px){.grid{grid-template-columns:1fr}}
.panel{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:14px}
.panel h3{margin:0 0 8px;color:var(--brand);font:700 18px/1 'Trebuchet MS',Verdana,Arial}
.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:14px}
.section-title{font:700 22px/1.2 'Trebuchet MS',Verdana,Arial;color:var(--brand);margin:0 0 8px}
.thread{display:flex;align-items:center;gap:10px;padding:8px 0;border-bottom:1px dashed #e5e7eb} .thread:last-child{border-bottom:0}
.video-embed{width:100%;aspect-ratio:16/9;border:0;border-radius:12px}
input[type=text],input[type=email],textarea,select{width:100%;padding:10px;border:1px solid var(--border);border-radius:10px}
button,.btn{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--border);border-radius:10px;background:linear-gradient(#fff,#f5f6f8);box-shadow:0 2px 0 #d1d5db;padding:10px 14px;font-weight:700;cursor:pointer}
button:hover,.btn:hover{background:linear-gradient(#fff,#eceff3)}
.table{width:100%;border-collapse:collapse}.table th,.table td{padding:10px;border-bottom:1px solid var(--border);text-align:left}
footer{border-top:1px dashed var(--border);color:#64748b;text-align:center;padding:26px 0 40px}
.badge{display:inline-flex;align-items:center;gap:6px;background:#fff3e1;border:1px solid #fed7aa;color:#9a3412;padding:6px 10px;border-radius:999px;font-weight:700}
.retro-note{font:700 12px/1 Verdana;color:#0f172a;letter-spacing:.3px}