@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--spacing:.25rem;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color 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h1,.exam-detail-head h1{font-size:clamp(28px,3vw,40px)}.section-heading h2{font-size:clamp(24px,2.7vw,34px)}.lead{font-size:14px}.problem-block h2{font-size:clamp(22px,2.2vw,28px)}.problem-block p:not(.task-number){font-size:16px;line-height:1.64}.variant-panel-head h2{font-size:22px}@media (max-width:1100px){.topbar,.section-heading,.workbench,.exam-detail-layout,.exam-detail-head{grid-template-columns:1fr}.exam-right{position:static}.hero-note{justify-content:flex-start;max-width:none}.promo-strip{grid-template-columns:1fr}.filter-form{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:680px){.app-shell{width:min(100% - 16px,1360px);padding-top:10px}.topbar,.toolbar,.matrix-section,.exam-reader,.request-card{border-radius:18px;padding:18px}.exam-page{width:min(100% - 16px,1280px)}.exam-detail,.variant-panel{border-radius:20px;padding:18px}.exam-nav{display:grid}.filter-form{grid-template-columns:1fr}.exam-reader-head{display:grid}}@media 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