@import"https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Inter:wght@300;400;500;600;700&display=swap";:root{--brand-primary: #1C1C1E;--brand-accent: #007AFF;--brand-success: #34C759;--brand-warning: #FF9500;--brand-error: #FF453A;--bg-main: #F2F2F7;--bg-surface: #FFFFFF;--bg-glass: rgba(255, 255, 255, .7);--text-primary: #1C1C1E;--text-secondary: #636366;--text-tertiary: #8E8E93;--text-quaternary: #AEAEB2;--border-light: rgba(0, 0, 0, .05);--border-medium: rgba(0, 0, 0, .1);--shadow-sm: 0 2px 8px rgba(0, 0, 0, .04);--shadow-md: 0 10px 30px rgba(0, 0, 0, .06);--shadow-lg: 0 20px 50px rgba(0, 0, 0, .1);--transition-fast: .15s cubic-bezier(.2, 0, 0, 1);--transition-normal: .3s cubic-bezier(.2, 0, 0, 1);--transition-slow: .5s cubic-bezier(.2, 0, 0, 1);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 20px;--radius-xl: 28px}*,*:before,*:after{box-sizing:border-box}body{margin:0;padding:0;background-color:var(--bg-main);color:var(--text-primary);font-family:Inter,-apple-system,sans-serif;-webkit-font-smoothing:antialiased;overflow-x:hidden}h1,h2,h3,h4,h5,h6{font-family:Outfit,sans-serif;letter-spacing:-.02em}.forum-bg{position:fixed;top:0;left:0;width:100%;height:100%;z-index:-1;background:radial-gradient(circle at 0% 0%,rgba(0,122,255,.03) 0%,transparent 50%),radial-gradient(circle at 100% 100%,rgba(52,199,89,.03) 0%,transparent 50%);pointer-events:none}.glass{background:var(--bg-glass);backdrop-filter:blur(20px) saturate(180%);-webkit-backdrop-filter:blur(20px) saturate(180%);border:1px solid rgba(255,255,255,.3)}.category-scroll{display:flex;gap:12px;overflow-x:auto;padding:8px 4px 20px;scrollbar-width:none;-ms-overflow-style:none;-webkit-mask-image:linear-gradient(to right,black 90%,transparent 100%);mask-image:linear-gradient(to right,black 90%,transparent 100%)}.category-scroll::-webkit-scrollbar{display:none}.category-chip{flex-shrink:0;display:flex;align-items:center;gap:10px;padding:12px 24px;border-radius:var(--radius-lg);background:var(--bg-surface);border:1px solid var(--border-light);box-shadow:var(--shadow-sm);cursor:pointer;transition:all var(--transition-normal);text-decoration:none;color:var(--text-secondary);font-weight:500;font-size:15px}.category-chip:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--brand-accent);color:var(--brand-accent)}.category-chip.active{background-color:var(--brand-primary)!important;color:#fff!important;border-color:var(--brand-primary)!important;box-shadow:0 12px 30px #0003}.category-chip.active *{color:#fff!important}.category-chip .icon-box{width:28px;height:28px;display:flex;align-items:center;justify-content:center;border-radius:8px;background:#00000008;transition:all var(--transition-fast)}.category-chip.active .icon-box{background:#ffffff1a}.topic-card{background:var(--bg-surface);border:1px solid var(--border-light);border-radius:var(--radius-lg);padding:24px;transition:all var(--transition-normal);position:relative;overflow:hidden}.topic-card:after{content:"";position:absolute;top:0;left:0;width:4px;height:100%;background:var(--brand-primary);opacity:0;transition:opacity var(--transition-fast)}.topic-card:hover{transform:translate(4px);box-shadow:var(--shadow-md);border-color:var(--border-medium)}.topic-card:hover:after{opacity:1}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:fadeIn .4s ease-out forwards}.compact-category-header{padding:32px;border-radius:var(--radius-xl);background:var(--bg-surface);border:1px solid var(--border-light);box-shadow:var(--shadow-md);display:flex;align-items:center;gap:32px;position:relative;overflow:hidden}.compact-category-header:before{content:"";position:absolute;top:0;right:0;width:300px;height:300px;background:radial-gradient(circle,var(--header-color, #eee) 0%,transparent 70%);opacity:.1;transform:translate(100px,-100px)}::-webkit-scrollbar{width:10px}::-webkit-scrollbar-track{background:var(--bg-main)}::-webkit-scrollbar-thumb{background:#c1c1c1;border-radius:5px;border:2px solid var(--bg-main)}::-webkit-scrollbar-thumb:hover{background:#a1a1a6}@media(max-width:768px){.compact-category-header{padding:20px;flex-direction:column;align-items:flex-start;gap:16px}}