:root{--primary:#ffd600;--primary-hover:#ffed4e;--secondary:#fbbf24;--background:#fff;--background-alt:#f8fafc;--surface:#fff;--surface-hover:#f8fafc;--border:#f3f4f6;--text-primary:#000;--text-secondary:#6b7280;--text-muted:#9ca3af;--danger:#ef4444;--success:#22c55e;--sidebar-width:280px;--feed-width:680px;--right-sidebar-width:340px;--spacing-xs:4px;--spacing-sm:8px;--spacing-md:16px;--spacing-lg:24px;--spacing-xl:32px;--radius-sm:4px;--radius-md:12px;--radius-lg:20px;--radius-xl:28px;--radius-full:9999px;--shadow-sm:0 1px 3px 0 #0000000d;--shadow-md:0 4px 8px -2px #00000014;--shadow-lg:0 12px 24px -4px #0000001f}[data-theme=dark]{--background:#121212;--background-alt:#1e1e1e;--surface:#1e1e1e;--surface-hover:#27272a;--border:#27272a;--text-primary:#fff;--text-secondary:#a1a1aa;--text-muted:#71717a;--shadow-sm:0 1px 3px 0 #0000004d;--shadow-md:0 4px 8px -2px #0006}@media (prefers-color-scheme:dark){:root:not([data-theme]){--background:#121212;--background-alt:#1e1e1e;--surface:#1e1e1e;--surface-hover:#27272a;--border:#27272a;--text-primary:#fff;--text-secondary:#a1a1aa;--text-muted:#71717a;--shadow-sm:0 1px 3px 0 #0000004d;--shadow-md:0 4px 8px -2px #0006}}*{box-sizing:border-box;margin:0;padding:0}html,body{max-width:100vw;height:100%;overflow-x:hidden}body{color:var(--text-primary);background:var(--background);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif}::-webkit-scrollbar{width:12px;height:12px}::-webkit-scrollbar-track{background:var(--background)}::-webkit-scrollbar-thumb{background:var(--border);border:3px solid var(--background);border-radius:6px;transition:background .2s}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}*{scrollbar-width:thin;scrollbar-color:var(--border)var(--background)}a{color:inherit;text-decoration:none;transition:opacity .2s}a:hover{opacity:.8}button{cursor:pointer;color:inherit;background:0 0;border:none;font-family:inherit;transition:all .2s}.container{grid-template-columns:var(--sidebar-width)1fr var(--right-sidebar-width);gap:32px;max-width:1400px;min-height:100vh;margin:0 auto;padding:0 24px;display:grid}@media (max-width:1200px){.container{grid-template-columns:var(--sidebar-width)1fr}.sidebar-right{display:none}}.sidebar-left{flex-direction:column;gap:24px;padding:24px 0;display:flex}.main-feed{max-width:var(--feed-width);width:100%;margin:0 auto;padding:24px 0}.sidebar-right{padding:24px 0}.text-xl{letter-spacing:-.02em;font-size:28px;font-weight:700}.text-lg{letter-spacing:-.01em;font-size:20px;font-weight:600}.text-md{font-size:16px;font-weight:500}.text-sm{font-size:14px;font-weight:400}.text-bold{font-weight:700}.text-secondary{color:var(--text-secondary)}.text-muted{color:var(--text-muted)}.card{background:var(--surface);border-radius:var(--radius-md);border:1px solid var(--border);overflow:hidden}.btn{border-radius:var(--radius-md);cursor:pointer;border:none;justify-content:center;align-items:center;height:48px;padding:0 24px;font-size:15px;font-weight:600;transition:all .2s;display:inline-flex}.btn-primary{background:var(--primary);color:#000;font-weight:700}.btn-primary:hover{background:var(--primary-hover);transform:translateY(-1px);box-shadow:0 4px 12px #ffd6004d}.btn-full{width:100%}.nav-item{border-radius:var(--radius-md);color:var(--text-primary);align-items:center;gap:16px;padding:14px 20px;font-size:17px;font-weight:500;transition:all .2s;display:flex}.nav-item:hover{background-color:var(--surface-hover)}.nav-item svg{stroke-width:2px;width:24px;height:24px}.nav-item.active{background-color:var(--background-alt);font-weight:700}.nav-item.active:before{content:"";background:var(--primary);border-radius:0 4px 4px 0;width:4px;height:24px;position:absolute;left:0}.feed-header{background:var(--surface);border-radius:var(--radius-lg);border:1px solid var(--border);justify-content:space-between;align-items:center;margin-bottom:24px;padding:20px 24px;display:flex}.hover-lift{transition:transform .2s,box-shadow .2s}.hover-lift:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.mobile-header{background:var(--surface);border-bottom:1px solid var(--border);z-index:1000;height:60px;display:none;position:fixed;top:0;left:0;right:0}.mobile-header-content{justify-content:space-between;align-items:center;max-width:100%;height:100%;padding:0 16px;display:flex}.mobile-logo{align-items:center;gap:10px;text-decoration:none;display:flex}.mobile-logo-icon{background:var(--primary);color:#000;border-radius:6px;justify-content:center;align-items:center;width:32px;height:32px;font-size:18px;font-weight:700;display:flex}.mobile-logo-text{color:var(--text-primary);font-size:20px;font-weight:800}.mobile-menu-btn{border-radius:var(--radius-md);width:40px;height:40px;color:var(--text-primary);background:0 0;justify-content:center;align-items:center;transition:background .2s;display:flex}.mobile-menu-btn:hover{background:var(--background-alt)}.mobile-overlay{z-index:998;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#00000080;display:none;position:fixed;inset:0}.mobile-close-btn{border-radius:var(--radius-md);background:var(--background-alt);width:40px;height:40px;color:var(--text-primary);z-index:1001;justify-content:center;align-items:center;transition:background .2s;display:none;position:absolute;top:16px;right:16px}.mobile-close-btn:hover{background:var(--border)}@media (max-width:768px){.mobile-header,.mobile-overlay{display:block}.mobile-close-btn{display:flex}body{padding-top:60px}.container{grid-template-columns:1fr;gap:0;padding:0 16px}.sidebar-left{background:var(--surface);z-index:999;border-right:1px solid var(--border);width:280px;height:100vh;padding-top:70px;transition:left .3s ease-in-out;position:fixed;top:0;left:-100%;overflow-y:auto}.sidebar-left.mobile-open{left:0}.sidebar-logo{margin:0!important;padding:0!important;display:none!important}.sidebar-right{display:none}.main-feed{max-width:100%;padding:16px 0}.feed-header{margin-bottom:16px;padding:16px}.post-composer{padding:16px!important}.composer-avatar{display:none!important}.composer-actions{flex-direction:column;gap:12px;align-items:stretch!important}.composer-actions>div{justify-content:center}.composer-submit-btn{width:100%}.post-card{margin-bottom:12px!important;padding:16px!important}.post-header{gap:10px!important}.post-user-info{flex-wrap:wrap}.post-user-info span{font-size:14px!important}.profile-banner{height:120px!important}.profile-info{padding:0 12px!important}.profile-header-actions{flex-direction:column;gap:12px;align-items:flex-start!important;margin-top:-40px!important}.profile-header-actions>div{border-width:3px!important}.profile-edit-btn{align-self:stretch;width:100%}.profile-meta{flex-wrap:wrap;font-size:14px!important}.profile-stats{font-size:13px!important}.card{border-radius:var(--radius-md)}.btn{height:44px;padding:0 20px;font-size:14px}.text-xl{font-size:24px!important}.text-lg{font-size:18px!important}.post-detail{padding:16px!important}}@media (min-width:769px){.mobile-header,.mobile-overlay,.mobile-close-btn{display:none!important}}.login-banner{background:var(--primary);color:#000;z-index:900;justify-content:center;align-items:center;gap:16px;width:100%;padding:12px 24px;font-weight:500;display:flex;position:relative}.login-banner-btn{color:#fff;border-radius:var(--radius-full);background:#000;padding:6px 20px;font-size:14px;font-weight:700;text-decoration:none;transition:all .2s}.login-banner-btn:hover{opacity:.8;transform:translateY(-1px)}@media (max-width:768px){.login-banner{display:none}}