.header{position:sticky;top:0;z-index:100;background:#12121acc;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-bottom:1px solid var(--border-color)}.header-content{max-width:1400px;margin:0 auto;padding:16px 24px;display:flex;align-items:center;gap:24px}.logo-section{display:flex;align-items:center;gap:12px;flex-shrink:0}.logo-icon{width:44px;height:44px;background:linear-gradient(135deg,var(--accent-blue),var(--accent-cyan));border-radius:12px;display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:var(--shadow-glow)}.logo-text 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p{font-size:.8rem;color:var(--text-secondary);line-height:1.5}@media(max-width:1024px){.sidebar{width:220px}}@media(max-width:768px){.sidebar{width:100%;flex-direction:row;flex-wrap:wrap}.sidebar-section{flex:1;min-width:200px}.category-nav{flex-direction:row;flex-wrap:wrap}.category-item{width:auto}}.main-layout{display:flex;max-width:1400px;margin:0 auto;padding:24px;gap:24px}.content-area{flex:1;min-width:0}.content-header{margin-bottom:24px}.section-title{font-size:1.5rem;font-weight:600;color:var(--text-primary);display:flex;align-items:center;gap:12px}.resource-count{font-size:.875rem;font-weight:400;color:var(--text-muted);background:var(--bg-card);padding:4px 12px;border-radius:20px}@media(max-width:768px){.main-layout{flex-direction:column;padding:16px}}*{margin:0;padding:0;box-sizing:border-box}:root{--bg-primary: #0a0a0f;--bg-secondary: #12121a;--bg-card: #1a1a24;--bg-hover: #22222e;--border-color: #2a2a3a;--text-primary: #ffffff;--text-secondary: #a0a0b0;--text-muted: 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