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h1{font-size:32px}.hero-features{display:none}.shell{grid-template-columns:1fr}.sidebar{position:fixed;left:0;top:0;z-index:40;width:260px;transform:translate(-100%);transition:transform .2s;box-shadow:var(--shadow-lg)}.sidebar.open{transform:none}.menu-toggle{display:inline-flex}.main{padding:18px 16px 40px}.topbar h1{font-size:24px}.row.c2{grid-template-columns:1fr}.exam-top{padding:12px 16px;flex-wrap:wrap}.exam-body{padding:16px}.q-card{padding:20px}.q-text{font-size:19px}.mini-stats{grid-template-columns:repeat(2,1fr)}.kv.kv4{grid-template-columns:110px 1fr}}@media (max-width: 520px){.stats,.choice-row{grid-template-columns:1fr}.level-card{flex-wrap:wrap}.badge-grid{grid-template-columns:repeat(2,1fr)}.grid-2,.grid-3{grid-template-columns:1fr}.welcome .big-emoji,.topbar-right .chip{display:none}}