:root{--google-blue:#1a73e8;--google-blue-700:#1557b0;--google-green:#188038;--google-yellow:#fbbc04;--google-red:#d93025;--ink:#202124;--muted:#5f6368;--line:#dadce0;--surface:#fff;--surface-soft:#f8fafd;--canvas:#f1f3f4;--shadow:0 1px 2px #3c40432e, 0 6px 18px #3c404314;color:var(--ink);background:var(--canvas);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;font-family:Google Sans,Product Sans,Noto Sans,Segoe UI,sans-serif}*{box-sizing:border-box}body{background:var(--canvas);min-width:320px;margin:0}button,input{font:inherit}button{cursor:pointer}.login-page{background:radial-gradient(circle at 18% 18%, #1a73e82e, transparent 30%), radial-gradient(circle at 82% 70%, #34a85329, transparent 28%), var(--canvas);place-items:center;min-height:100vh;padding:24px;display:grid}.login-card{background:var(--surface);border:1px solid var(--line);width:min(100%,520px);box-shadow:var(--shadow);border-radius:32px;padding:clamp(32px,5vw,52px)}.login-card>img{width:min(100%,310px);height:auto;margin:0 auto 30px;display:block}.login-card h1{color:var(--ink);letter-spacing:-.07em;margin:0;font-size:clamp(2.5rem,8vw,4.5rem);line-height:.95}.login-card p:not(.eyebrow){color:var(--muted);margin:14px 0 24px}.login-card form{gap:10px;display:grid}.login-card label{color:var(--muted);font-size:.8rem;font-weight:800}.login-card input{min-height:52px;color:var(--ink);background:var(--surface-soft);border:1px solid var(--line);border-radius:16px;outline:0;padding:0 14px}.login-card input:focus{border-color:var(--google-blue);box-shadow:0 0 0 3px #1a73e824}.login-card button{color:#fff;background:var(--google-blue);border:0;border-radius:999px;min-height:52px;margin-top:10px;font-weight:850}.login-error{color:var(--google-red);font-size:.82rem;font-weight:750}.app-shell{grid-template-columns:280px minmax(0,1fr);min-height:100vh;display:grid}.side-nav{background:var(--surface);border-right:1px solid var(--line);flex-direction:column;gap:24px;height:100vh;padding:22px 16px;display:flex;position:sticky;top:0}.brand-lockup{border-bottom:1px solid var(--line);text-align:center;justify-items:center;gap:12px;padding:8px 10px 22px;display:grid}.brand-logo{object-fit:contain;flex:none;width:178px;height:auto}.brand-logo--card{background:#fff;border-radius:12px;width:74px;height:48px;padding:6px}.brand-lockup strong{color:var(--ink);font-size:1.25rem;font-weight:850;line-height:1.1;display:block}.side-nav nav{gap:6px;display:grid}.side-nav a,.side-nav nav button,.nav-settings{min-height:46px;color:var(--muted);text-align:left;background:0 0;border:0;border-radius:999px;align-items:center;gap:14px;padding:0 14px;font-weight:650;text-decoration:none;display:flex}.side-nav a.active,.side-nav nav button.active{color:var(--google-blue-700);background:#e8f0fe}.side-nav a:hover,.side-nav nav 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0;border:0;outline:0}.top-actions{align-items:center;gap:12px;margin-left:auto;display:flex;position:relative}.account-menu{position:relative}.avatar{color:#fff;background:var(--google-blue);border:0;border-radius:50%;place-items:center;width:44px;height:44px;font-weight:800;display:grid}.account-dropdown{z-index:20;background:var(--surface);border:1px solid var(--line);width:250px;box-shadow:var(--shadow);border-radius:20px;gap:8px;padding:12px;display:grid;position:absolute;top:calc(100% + 10px);right:0}.account-dropdown>div{border-bottom:1px solid var(--line);padding:8px 10px 10px}.account-dropdown strong,.account-dropdown span{display:block}.account-dropdown span{color:var(--muted);margin-top:3px;font-size:.82rem}.account-dropdown button{min-height:40px;color:var(--ink);text-align:left;background:0 0;border:0;border-radius:12px;align-items:center;gap:10px;padding:0 10px;font-weight:750;display:flex}.account-dropdown 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34px}.top-bar{padding-bottom:14px}.menu-button{display:grid}.hero-card,.page-panel{border-radius:24px;grid-template-columns:1fr}.hero-actions{justify-content:flex-start}.metrics-grid,.course-grid,.right-column,.sync-list button,.lesson-list button,.assessment-review-list button,.document-list button{grid-template-columns:1fr}.student-card{max-width:none}}@media (width<=540px){.top-bar,.top-actions{gap:8px}.search-box input::placeholder{color:#0000}.hero-card h1{font-size:2.6rem}.task-list div{grid-template-columns:48px 1fr}.task-list small{grid-column:2}}