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h3{font-family:var(--font-family-heading);font-size:1.45rem;text-transform:none;letter-spacing:-.03em}.footer-legal{font-family:var(--font-family-mono)}@media(max-width:1400px){.topics-section,.paths-section,.exercises-section{margin-inline:32px}}@media(max-width:1100px){.hero{grid-template-columns:1fr .72fr;min-height:520px}.hero h1{font-size:clamp(3rem,6vw,4.8rem)}.topics-grid{grid-template-columns:repeat(2,1fr)}.topic-card:nth-child(3){border-left:1px solid var(--color-border);border-top:1px solid var(--color-border)}.topic-card:nth-child(4){border-top:1px solid var(--color-border)}.lesson-layout{grid-template-columns:190px minmax(0,760px)}.lesson-toc{grid-column:2;padding:16px;border:1px solid var(--color-border);background:var(--color-surface)}.exercise-filters{grid-template-columns:170px 1fr}.exercise-filters .filter-group:last-child{grid-column:2}.exercise-row{grid-template-columns:44px minmax(260px,1fr) 120px minmax(220px,.8fr) 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var(--color-border)}.paths-grid{display:block;margin-top:0}.paths-grid:before{inset:22px auto 22px 13px;width:1px;height:auto}.path-card{display:grid;grid-template-columns:42px 1fr;align-items:center;padding:14px 0 14px 38px;text-align:left}.path-card:before{left:7px;top:calc(50% - 7px)}.path-index{margin:0}.exercises-grid{grid-template-columns:1fr}.exercises-section .exercise-card{border:0;border-top:1px solid var(--color-border)}.exercises-section .exercise-card:last-child{border-bottom:1px solid var(--color-border)}.project-section{padding:42px 20px}.project-content{display:block}.project-content h2{margin-bottom:24px}.page-content{padding:46px 20px 64px}.page-content>h1{font-size:clamp(2.7rem,13vw,4rem)}.topics-grid-large{grid-template-columns:1fr}.topic-card-large:nth-child(odd){border-right:0}.exercise-filters{display:flex;padding:18px;gap:22px}.filter-options{gap:7px}.filter-option{min-height:40px}.exercise-row--header{display:none}.exercise-row{grid-template-columns:38px minmax(0,1fr) 24px;gap:10px;min-height:88px;padding:14px 8px}.exercise-row__topic{display:none}.exercise-row__difficulty{grid-column:2;grid-row:2;grid-template-columns:26px 58px 1fr}.exercise-row__title strong{white-space:normal;line-height:1.2}.exercise-row__arrow{grid-column:3;grid-row:1 / span 2}.lesson-layout{padding:32px 20px 64px}.lesson-main{order:1}.lesson-toc{order:0;padding:14px;border-left:1px solid var(--color-border)}.lesson-sidebar{order:2;padding:20px 0 0;border-right:0;border-top:1px solid var(--color-border)}.lesson-header h1{font-size:clamp(2.5rem,11vw,3.5rem)}.lesson-meta{display:grid;gap:9px}.lesson-content{font-size:1.02rem}.lesson-content h2{font-size:1.65rem}.site-footer{padding-inline:20px}}@media(max-width:480px){.site-logo{gap:9px}.logo-symbol{width:29px}.header-actions{gap:0}.theme-toggle,.search-link,.menu-toggle{width:36px}.hero-search{display:block;border:0;overflow:visible}.hero-search input{width:100%;border:1px solid var(--color-text-secondary)}.hero-search .btn{width:100%;margin-top:8px}.hero-actions{display:grid;grid-template-columns:1fr}.hero-actions .btn{width:100%}.hero-graph{min-height:220px}.topic-card{grid-template-columns:28px 46px 1fr 20px;padding-inline:8px}.topic-icon svg{width:34px;height:34px}.project-content h2{font-size:2rem}.lesson-nav{flex-direction:column}.mdx-block__header{align-items:flex-start}.mdx-block__toggle{margin-left:0}}@media(max-width:320px){.logo-text{font-size:1rem}.theme-toggle,.search-link,.menu-toggle{width:32px}.hero{padding-inline:14px}.hero h1{font-size:2.55rem}.hero-graph{margin-inline:-14px}.topics-section,.paths-section,.exercises-section{margin-inline:14px}.page-content,.lesson-layout{padding-inline:14px}.exercise-filters{padding:14px}.filter-option{padding-inline:10px}.exercise-row__difficulty>span:last-child{display:none}}@media print{body{background:#fff}.theme-toggle,.hero-graph{display:none!important}}