:root{--canvas:#f5f7fb;--surface:#fff;--surface-alt:#f9fbff;--surface-muted:#eef2f8;--text:#202124;--muted:#5f6368;--border:#e2e6ed;--primary:#1a73e8;--primary-600:#1765cc;--primary-700:#1456a6;--focus:rgba(26,115,232,.3);--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:24px;--space-6:32px;--space-24:96px;--space-25:100px;--max-width:1160px;--font-sans:"Inter","Roboto","Segoe UI",-apple-system,BlinkMacSystemFont,sans-serif}*{box-sizing:border-box}body,html{height:100%}body{margin:0;font-family:var(--font-sans);font-size:15px;color:var(--text);-webkit-font-smoothing:antialiased}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3,h4,h5{margin:0;color:var(--text);font-weight:600}p{margin:0;line-height:1.55}.app-shell{min-height:100vh;display:flex;flex-direction:column}.topnav{position:-webkit-sticky;position:sticky;top:0;z-index:25;background:var(--surface);border-bottom:1px solid var(--border)}.topnav-inner{margin-left:var(--space-5);margin-right:var(--space-5);padding:12px var(--space-5);display:flex;align-items:center;gap:var(--space-4)}.brand{display:inline-flex;align-items:center;padding-right:var(--space-4)}.brand img{height:28px;width:auto}.navbar-search{flex:1 1;max-width:620px;display:flex;align-items:center;gap:6px;background:#fff;border:1px solid rgba(32,33,36,.12);border-radius:999px;padding:6px 12px;box-shadow:0 1px 3px rgba(60,64,67,.12)}.navbar-search-input{flex:1 1;padding:6px;border:none;background:transparent;font-size:14px}.navbar-search-input:focus{outline:none}.navbar-search-button{border-radius:50%;padding:6px;background:transparent;border:none;color:var(--muted);cursor:pointer}.navbar-search-button:hover{color:var(--primary-700)}.nav-actions{margin-left:auto;display:inline-flex;align-items:center;gap:var(--space-3)}.nav-notifications{position:relative}.nav-notifications button{background:transparent;border:none;display:inline-flex;align-items:center;gap:8px;padding:6px 10px;border-radius:999px;color:var(--muted);font-weight:500;cursor:pointer}.nav-notifications button:hover{background:rgba(26,115,232,.08);color:var(--primary-700)}.nav-notifications button .badge{margin-left:4px}.nav-notifications-panel{position:absolute;right:0;top:calc(100% + 8px);min-width:280px;max-width:320px;background:var(--surface);border:1px solid var(--border);border-radius:12px;box-shadow:0 12px 28px rgba(15,23,42,.12);overflow:hidden;z-index:30}.nav-notifications-panel header{display:flex;justify-content:space-between;align-items:center;padding:10px 16px;border-bottom:1px solid var(--border);font-size:13px;color:var(--muted)}.nav-notifications-list{max-height:320px;overflow-y:auto}.nav-notifications-item{display:flex;gap:10px;align-items:center;padding:12px 16px;border-bottom:1px solid var(--border)}.nav-notifications-item.unread{background:var(--surface-alt)}.main-container{width:min(960px,100%);margin-left:var(--space-25);margin-right:auto;padding:var(--space-5) var(--space-5) var(--space-6) 0;display:grid;grid-gap:var(--space-4);gap:var(--space-4)}.page-header{display:grid;grid-gap:var(--space-2);gap:var(--space-2)}.page-header h1{font-size:26px;font-weight:600}.page-header p{color:var(--muted);font-size:14px}.page-section{padding:var(--space-4) 0}.stack{display:grid;grid-gap:var(--space-2);gap:var(--space-2)}.stack-sm{display:grid;grid-gap:var(--space-1);gap:var(--space-1)}.muted{color:var(--muted)}.card{background:var(--surface);padding:var(--space-4);box-shadow:0 4px 16px rgba(15,23,42,.06)}.pill{background:rgba(26,115,232,.12);color:var(--primary-700);font-weight:500}.chip,.pill{display:inline-flex;align-items:center;gap:6px;border-radius:999px;border:none;padding:4px 10px;font-size:12px}.chip{background:var(--surface-alt);color:var(--muted)}a.button,button{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:none;border-radius:999px;padding:10px 16px;background:var(--primary);color:#fff;font-weight:600;font-size:14px;cursor:pointer;transition:background .12s ease}a.button:hover,button:hover{background:var(--primary-600);text-decoration:none}a.button:active,button:active{background:var(--primary-700)}a.button[aria-disabled=true],button[disabled]{opacity:.55;cursor:default}.btn{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:999px;border:none;background:transparent;font-weight:500;font-size:13px;color:var(--muted);transition:background .12s ease,color .12s ease}.btn:hover{background:rgba(26,115,232,.08)}.btn-primary,.btn:hover{color:var(--primary-700)}.btn-primary{background:rgba(26,115,232,.12)}.btn-primary:hover{background:rgba(26,115,232,.18)}.btn-ghost{color:var(--muted)}.btn-sm{padding:4px 10px;font-size:12px}input,select,textarea{width:100%;padding:9px 14px;border:1px solid var(--border);border-radius:8px;background:#fff;color:var(--text);font-size:14px}button:focus,input:focus,select:focus,textarea:focus{outline:2px solid var(--focus);outline-offset:2px}label{font-size:13px;color:var(--muted);display:grid;grid-gap:6px;gap:6px}img,video{border-radius:12px}.dropzone{padding:40px;text-align:center;border:1px dashed var(--border);border-radius:12px;color:var(--muted);background:var(--surface)}.dropzone.drag{border-color:var(--primary);background:rgba(26,115,232,.05)}.search-header{display:grid;grid-gap:var(--space-2);gap:var(--space-2)}.results-meta{display:flex;justify-content:space-between;align-items:center;gap:var(--space-2);font-size:13px;color:var(--muted)}.result-list{display:grid;grid-gap:var(--space-4);gap:var(--space-4)}.result-item{display:flex;gap:var(--space-3);align-items:flex-start;padding-bottom:15px}.result-icon{width:60px;height:60px;object-fit:contain;border-radius:12px;background:var(--surface-alt)}.result-content{flex:1 1;display:grid;grid-gap:2px;gap:2px}.result-title{font-size:20px;font-weight:600}.result-title:hover{text-decoration:underline}.result-link{font-size:13px;color:#1967d2}.result-snippet{color:var(--muted);font-size:14px}.result-meta{display:inline-flex;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--muted)}.profile-header{display:grid;grid-gap:var(--space-3);gap:var(--space-3);background:var(--surface);padding:var(--space-4);box-shadow:0 6px 24px rgba(15,23,42,.06)}.profile-meta{display:flex;align-items:center;gap:var(--space-4);flex-wrap:wrap}.profile-avatar{width:96px;height:96px;border-radius:24px;object-fit:cover}.profile-stats{display:inline-flex;gap:18px;flex-wrap:wrap;font-size:14px;color:var(--muted)}.profile-stats span strong{color:var(--text)}.app-hero{display:flex;gap:var(--space-4);align-items:flex-start;flex-wrap:wrap;background:var(--surface);padding:var(--space-4);box-shadow:0 6px 24px rgba(15,23,42,.06)}.app-hero-meta{display:grid;grid-gap:var(--space-2);gap:var(--space-2);flex:1 1}.app-hero-logo{width:88px;height:88px;border-radius:20px;object-fit:contain;box-shadow:0 2px 12px rgba(15,23,42,.12)}.app-hero-stats{display:inline-flex;gap:14px;flex-wrap:wrap;font-size:13px;color:var(--muted)}.section-toolbar{display:flex;align-items:center;justify-content:space-between;gap:var(--space-2);flex-wrap:wrap}.section-toolbar .actions,.section-toolbar .filters{display:inline-flex;gap:8px;flex-wrap:wrap}.empty-state{background:var(--surface);padding:var(--space-4);box-shadow:0 4px 16px rgba(15,23,42,.06);font-size:14px;color:var(--muted)}.auth-wrapper{min-height:65vh;display:grid;place-items:center}.auth-card{width:min(100%,520px);background:var(--surface);box-shadow:0 12px 32px rgba(15,23,42,.12);padding:var(--space-5);display:grid;grid-gap:var(--space-4);gap:var(--space-4)}@media (max-width:1024px){.topnav-inner{width:100%;margin-left:var(--space-4);margin-right:var(--space-4)}.main-container,.topnav-inner{padding-left:var(--space-4);padding-right:var(--space-4)}.main-container{margin-left:0}}@media (max-width:768px){.topnav-inner{flex-wrap:wrap;gap:var(--space-3)}.navbar-search{order:3;width:100%}.navbar-search-button{display:none}.main-container{width:100%;margin-left:0;padding:var(--space-4) var(--space-4) var(--space-5)}.result-item{flex-direction:column}.result-icon{width:52px;height:52px}}@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}