.LoginModal_overlay__Gb0Oh{position:fixed;inset:0;z-index:1300;display:grid;place-items:center;padding:var(--space-4);overflow-y:auto;background:var(--surface-scrim);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);animation:LoginModal_fadeIn__nxW3U .16s ease-out}.LoginModal_modal__ut8wi{position:relative;width:min(100%,27rem);max-height:calc(100dvh - 2rem);overflow-y:auto;color:var(--text);background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-xl);box-shadow:var(--shadow-xl);animation:LoginModal_riseIn__RRsrm .19s ease-out}.LoginModal_closeButton__FpYzP{position:absolute;inset-block-start:var(--space-3);inset-inline-end:var(--space-3);z-index:1;display:grid;place-items:center;width:2.75rem;height:2.75rem;padding:0;color:var(--text-secondary);background:transparent;border:1px solid transparent;border-radius:var(--radius-control);font-family:var(--font-sans);font-size:1.65rem;line-height:1;cursor:pointer}.LoginModal_closeButton__FpYzP:hover{color:var(--text);background:var(--surface-raised);border-color:var(--line)}.LoginModal_content__w7tW6{padding:clamp(2rem,7vw,2.75rem)}.LoginModal_brandMark__zuygL{display:grid;place-items:center;width:3rem;height:3rem;margin:0 auto var(--space-5);color:var(--text-on-brand);background:linear-gradient(135deg,var(--brand),var(--brand-emphasis));border-radius:var(--radius-md);box-shadow:var(--shadow-sm)}.LoginModal_title__jq_FD{margin:0 0 var(--space-2);color:var(--text);font-size:clamp(1.55rem,6vw,1.9rem);font-weight:400;letter-spacing:-.02em;line-height:1.15;text-align:center;font-family:var(--font-display)}.LoginModal_description__ps7OI{margin:0 auto var(--space-6);color:var(--text-secondary);font-size:.95rem;line-height:1.6;text-align:center}.LoginModal_error__D06t_{margin-bottom:var(--space-4);padding:var(--space-3) var(--space-4);color:var(--danger);background:color-mix(in srgb,var(--danger) 7%,var(--surface));border:1px solid color-mix(in srgb,var(--danger) 30%,var(--line));border-radius:var(--radius-md);font-size:.86rem;line-height:1.5;text-align:center}.LoginModal_buttonGroup__u3Lsx{display:grid;grid-gap:var(--space-3);gap:var(--space-3);margin-bottom:var(--space-5)}.LoginModal_authButton__5ya0y{display:flex;align-items:center;justify-content:center;gap:var(--space-3);min-height:3.25rem;padding:.75rem 1.1rem;color:var(--text);background:var(--surface-raised);border:1px solid var(--line);border-radius:var(--radius-control);font-family:var(--font-sans);font-size:.94rem;font-weight:720;cursor:pointer;transition:transform .15s ease,background .15s ease,border-color .15s ease,box-shadow .15s ease}.LoginModal_authButton__5ya0y:hover:not(:disabled){background:var(--brand-softer);border-color:var(--brand);box-shadow:var(--shadow-sm);transform:translateY(-1px)}.LoginModal_authButton__5ya0y:disabled{cursor:wait;opacity:.58}.LoginModal_icon__bZUx9{flex:0 0 1.25rem;width:1.25rem;height:1.25rem}.LoginModal_googleButton__i2RRp:hover:not(:disabled){border-color:var(--brand)}.LoginModal_appleButton__vsyx0{color:#fff;background:#111;border-color:#111}.LoginModal_appleButton__vsyx0:hover:not(:disabled){color:#fff;background:#262626;border-color:#3b3b3b}.LoginModal_authButton__5ya0y:focus-visible,.LoginModal_closeButton__FpYzP:focus-visible,.LoginModal_legalLinks__cS2Q7 a:focus-visible{outline:3px solid var(--brand-soft);outline-offset:2px}.LoginModal_terms__0hfi8{margin:0;color:var(--text-muted);font-size:.72rem;line-height:1.55;text-align:center}.LoginModal_legalLinks__cS2Q7{display:flex;justify-content:center;gap:var(--space-2);margin-top:var(--space-2);color:var(--text-muted);font-size:.75rem}.LoginModal_legalLinks__cS2Q7 a{color:var(--text-secondary);text-underline-offset:.18em}.LoginModal_legalLinks__cS2Q7 a:hover{color:var(--brand)}@keyframes LoginModal_fadeIn__nxW3U{0%{opacity:0}}@keyframes LoginModal_riseIn__RRsrm{0%{opacity:0;transform:translateY(.75rem) scale(.985)}}@media (max-width:420px){.LoginModal_overlay__Gb0Oh{align-items:end;padding:0}.LoginModal_modal__ut8wi{width:100%;max-height:calc(100dvh - 1rem);border-radius:var(--radius-xl) var(--radius-xl) 0 0;-webkit-border-after:0;border-block-end:0}.LoginModal_content__w7tW6{padding:2.5rem var(--space-5) calc(var(--space-6) + env(safe-area-inset-bottom))}}@media (prefers-reduced-motion:reduce){.LoginModal_modal__ut8wi,.LoginModal_overlay__Gb0Oh{animation:none}.LoginModal_authButton__5ya0y{transition:none}}.InlineSaveCTA_card__hMSGr{display:flex;align-items:flex-start;gap:1rem;margin:1.25rem 0;padding:1.1rem 1.25rem;border:1px solid var(--color-border);border-radius:var(--radius-lg);background:var(--gradient-brand-subtle),var(--color-bg-card);box-shadow:var(--shadow-md);color:var(--color-text-primary)}.InlineSaveCTA_iconWrap__KkTv_{flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-primary-soft);color:var(--color-primary-light)}.InlineSaveCTA_body__ecIOa{flex:1 1 auto;min-width:0}.InlineSaveCTA_headline__ca_yZ{margin:0 0 .35rem;font-size:1.05rem;line-height:1.3;font-weight:400;color:var(--color-text-primary);font-family:var(--font-display)}.InlineSaveCTA_text__VagE1{margin:0 0 .85rem;font-size:.92rem;line-height:1.5;color:var(--color-text-secondary)}.InlineSaveCTA_button__L0Rpq{display:inline-flex;align-items:center;gap:.4rem;padding:.65rem 1.1rem;border:none;border-radius:var(--radius-pill);background:var(--gradient-brand);color:var(--text-on-brand);font-size:.95rem;font-weight:700;cursor:pointer;transition:transform .12s ease,box-shadow .12s ease;box-shadow:var(--shadow-sm);font-family:inherit}.InlineSaveCTA_button__L0Rpq,.InlineSaveCTA_button__L0Rpq *{color:var(--text-on-brand)!important;-webkit-text-fill-color:var(--text-on-brand)}.InlineSaveCTA_button__L0Rpq:hover{transform:translateY(-1px);box-shadow:var(--shadow-md)}.InlineSaveCTA_button__L0Rpq:active{transform:translateY(0)}.InlineSaveCTA_button__L0Rpq:focus-visible,.InlineSaveCTA_savedLink__LNdmf:focus-visible{outline:3px solid var(--focus-ring);outline-offset:3px}.InlineSaveCTA_savedCard__v3UcI{align-items:center;gap:.6rem;padding:.6rem .9rem;background:var(--accent-soft);border-color:var(--color-success);box-shadow:none}.InlineSaveCTA_savedCheck__vnG8I{flex:0 0 auto;color:var(--color-success)}.InlineSaveCTA_savedText__NGXoT{flex:1 1 auto;font-size:.9rem;color:var(--color-text-primary)}.InlineSaveCTA_savedLink__LNdmf{flex:0 0 auto;color:var(--color-success);font-size:.85rem;font-weight:600;text-decoration:none}.InlineSaveCTA_savedLink__LNdmf:hover{color:var(--color-secondary)}.InlineSaveCTA_skeleton__X14n7{height:7.5rem;margin:1.25rem 0;border:1px dashed var(--color-border);border-radius:var(--radius-lg);background:var(--color-surface-subtle)}@media (max-width:600px){.InlineSaveCTA_card__hMSGr{flex-direction:column;gap:.75rem;padding:1rem}.InlineSaveCTA_iconWrap__KkTv_{width:32px;height:32px}.InlineSaveCTA_button__L0Rpq{width:100%;justify-content:center}.InlineSaveCTA_savedCard__v3UcI{flex-direction:row;flex-wrap:wrap}.InlineSaveCTA_skeleton__X14n7{height:9rem}}.Navigation_breadcrumbs__XCrBu{margin-bottom:2rem;font-size:.9rem}.Navigation_breadcrumbs__XCrBu ol{list-style:none;padding:0;margin:0;display:flex;align-items:center;flex-wrap:wrap}.Navigation_breadcrumbs__XCrBu li{color:var(--color-text-secondary)}.Navigation_breadcrumbs__XCrBu li:not(:last-child):after{content:"/";margin:0 .75rem;color:var(--color-border)}.Navigation_breadcrumbs__XCrBu a{color:var(--color-text-secondary);text-decoration:none;transition:color .2s ease}.Navigation_breadcrumbs__XCrBu a:hover{color:var(--color-accent)}.Navigation_breadcrumbs__XCrBu span[aria-current=page]{color:var(--color-text-primary);font-weight:500}.Navigation_drillNavigation__rT5hA{display:flex;justify-content:space-between;gap:1rem;margin-top:4rem;padding-top:2rem;border-top:1px solid var(--color-border)}.Navigation_navLink__7db7P{display:flex;flex-direction:column;padding:1rem 1.5rem;border:1px solid var(--color-border);border-radius:8px;text-decoration:none;transition:all .2s ease;flex-basis:48%}.Navigation_navLink__7db7P:hover{border-color:var(--color-accent);background-color:var(--color-bg-panel)}.Navigation_navLink__7db7P span{font-size:.9rem;color:var(--color-text-secondary);margin-bottom:.25rem}.Navigation_navLink__7db7P strong{font-size:1.1rem;color:var(--color-text-primary)}.Navigation_nextLink__1HPVs{text-align:right}.Navigation_levelSwitcher__p6e6v{display:flex;justify-content:center;gap:.5rem;margin-bottom:3rem;padding-bottom:3rem;border-bottom:1px solid var(--color-border)}.Navigation_levelLink__xUKfq{padding:.5rem 1rem;font-weight:600;text-decoration:none;border-radius:8px;color:var(--color-text-secondary);border:2px solid transparent;transition:all .2s ease}.Navigation_levelLink__xUKfq:hover{color:var(--color-text-primary);background-color:var(--color-bg-panel)}.Navigation_levelLinkActive__tShb9{color:var(--color-accent);border-color:var(--color-accent);background-color:color-mix(in srgb,var(--danger) 10%,transparent)}.FAQSection_faqContainer__HcgwR{margin:3rem 0;padding:2rem;background-color:var(--surface);border-radius:12px;border:1px solid var(--line)}.FAQSection_faqHeader__lA8Kt{margin-top:0;margin-bottom:1.5rem;text-align:center;color:var(--text)}.FAQSection_faqList__X8fSB{display:flex;flex-direction:column;gap:1rem}.FAQSection_faqItem__ydNai{border-bottom:1px solid var(--line);padding-bottom:1rem}.FAQSection_faqItem__ydNai:last-child{border-bottom:none;padding-bottom:0}.FAQSection_faqQuestion__40jJf{font-weight:600;font-size:1.1rem;cursor:pointer;list-style:none;position:relative;padding-right:2rem;color:var(--text);transition:color .2s ease-in-out}.FAQSection_faqQuestion__40jJf:hover{color:var(--text)}.FAQSection_faqQuestion__40jJf::-webkit-details-marker{display:none}.FAQSection_faqQuestion__40jJf:after{content:"▾";position:absolute;right:0;top:0;transition:transform .2s}.FAQSection_faqItem__ydNai[open] .FAQSection_faqQuestion__40jJf:after{transform:rotate(180deg)}.FAQSection_faqAnswer__0zxVe{margin-top:1rem;padding-left:.5rem;line-height:1.7;color:var(--text-muted)}.VocabHighlight_highlight__0Q0Hi{position:relative;display:inline-block;color:inherit;cursor:help;border-bottom:2px dotted var(--brand);border-radius:.15rem}.VocabHighlight_highlight__0Q0Hi:focus-visible{outline:3px solid var(--focus-ring);outline-offset:3px}.VocabHighlight_tooltip__oYTRu{position:absolute;inset-inline-start:50%;bottom:calc(100% + .65rem);z-index:20;width:max-content;max-width:min(16rem,calc(100vw - 2rem));padding:.5rem .75rem;visibility:hidden;color:var(--text-inverse);font-family:var(--font-sans);font-size:.875rem;font-weight:650;line-height:1.35;text-align:center;white-space:normal;background:var(--surface-inverse);border-radius:var(--radius-xs);box-shadow:var(--shadow-lg);opacity:0;transform:translateX(-50%) translateY(.25rem);transition:opacity var(--transition-fast),transform var(--transition-fast),visibility var(--transition-fast)}.VocabHighlight_tooltip__oYTRu:after{content:"";position:absolute;top:100%;inset-inline-start:50%;border:.35rem solid transparent;border-top:.35rem solid var(--surface-inverse);transform:translateX(-50%)}.VocabHighlight_highlight__0Q0Hi:focus .VocabHighlight_tooltip__oYTRu,.VocabHighlight_highlight__0Q0Hi:focus-within .VocabHighlight_tooltip__oYTRu,.VocabHighlight_highlight__0Q0Hi:hover .VocabHighlight_tooltip__oYTRu{visibility:visible;opacity:1;transform:translateX(-50%) translateY(0)}@media (prefers-reduced-motion:reduce){.VocabHighlight_tooltip__oYTRu{transition:none}}.GrammarLessonSurface_container__D8NM1,.GrammarLessonSurface_pillarContainer__wFiK3{width:min(100% - 2rem,54rem);min-height:100vh;margin:0 auto;padding:clamp(1.25rem,4vw,2.5rem) 0 4rem;color:var(--text)}.GrammarLessonSurface_pillarContainer__wFiK3{width:min(100% - 2rem,62rem)}.GrammarLessonSurface_header___OaXl{margin:1.5rem 0 2rem;padding:clamp(1.2rem,4vw,2rem);border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--surface);box-shadow:var(--shadow-sm);text-align:center}.GrammarLessonSurface_header___OaXl h1{max-width:20ch;margin:0 auto .85rem;color:var(--text);font-family:var(--font-display);font-size:clamp(2rem,6vw,3.35rem);font-weight:400;line-height:1.08;letter-spacing:-.015em;text-wrap:balance}.GrammarLessonSurface_levelPill__oDWsn{display:inline-flex;min-height:1.9rem;padding:.3rem .65rem;align-items:center;border:1px solid color-mix(in srgb,var(--brand) 28%,var(--line));border-radius:var(--radius-pill);background:var(--brand-softer);color:var(--brand-emphasis);font-size:.75rem;font-weight:800}.GrammarLessonSurface_pillarHeader__a3z_v{max-width:48rem;margin:1.5rem auto 1rem;padding:clamp(1.2rem,4vw,2rem);border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--surface);box-shadow:var(--shadow-sm)}.GrammarLessonSurface_pillarHeader__a3z_v h1{max-width:22ch;margin:.65rem 0 0;color:var(--text);font-family:var(--font-display);font-size:clamp(2rem,5vw,3.2rem);font-weight:400;line-height:1.08;letter-spacing:-.015em;text-wrap:balance}.GrammarLessonSurface_pillarHeader__a3z_v p{max-width:65ch;margin:.8rem 0 0;color:var(--text-secondary)}.GrammarLessonSurface_lessonSection__Q9H06{display:grid;grid-template-columns:minmax(0,1fr);grid-gap:1.25rem;gap:1.25rem;margin-bottom:2rem}.GrammarLessonSurface_explanationContent__OkSmd,.GrammarLessonSurface_pillarContent__GMefk{color:var(--text-secondary);font-size:clamp(1rem,1.5vw,1.08rem);line-height:1.75}.GrammarLessonSurface_explanationContent__OkSmd :is(h2,h3,h4),.GrammarLessonSurface_pillarContent__GMefk :is(h1,h2,h3,h4){color:var(--text);font-family:var(--font-display);font-weight:800;line-height:1.2;letter-spacing:-.025em;text-wrap:balance;scroll-margin-top:6rem}.GrammarLessonSurface_explanationContent__OkSmd h2,.GrammarLessonSurface_pillarContent__GMefk h2{margin:2.75rem 0 1rem;font-size:clamp(1.55rem,3vw,2rem);font-family:var(--font-display);font-weight:400}.GrammarLessonSurface_explanationContent__OkSmd h3,.GrammarLessonSurface_pillarContent__GMefk h3{margin:2.1rem 0 .8rem;font-size:clamp(1.25rem,2.4vw,1.55rem);font-family:var(--font-display);font-weight:400}.GrammarLessonSurface_pillarContent__GMefk h1{margin:0 0 1.3rem;font-size:clamp(2rem,5vw,3rem);font-family:var(--font-display);font-weight:400}.GrammarLessonSurface_pillarContent__GMefk h4{margin:1.6rem 0 .65rem;font-size:1.12rem;font-family:var(--font-display);font-weight:400}.GrammarLessonSurface_explanationContent__OkSmd p,.GrammarLessonSurface_pillarContent__GMefk p{margin:0 0 1.25rem}.GrammarLessonSurface_explanationContent__OkSmd strong,.GrammarLessonSurface_pillarContent__GMefk strong{color:var(--text);font-weight:720}.GrammarLessonSurface_explanationContent__OkSmd a,.GrammarLessonSurface_pillarContent__GMefk a{color:var(--brand-emphasis);font-weight:650;text-decoration-thickness:1px;text-underline-offset:.18em}.GrammarLessonSurface_explanationContent__OkSmd a:hover,.GrammarLessonSurface_pillarContent__GMefk a:hover{color:var(--brand-strong)}.GrammarLessonSurface_explanationContent__OkSmd :is(ul,ol),.GrammarLessonSurface_pillarContent__GMefk :is(ul,ol){margin:0 0 1.25rem;-webkit-padding-start:1.4rem;padding-inline-start:1.4rem}.GrammarLessonSurface_explanationContent__OkSmd li+li,.GrammarLessonSurface_pillarContent__GMefk li+li{margin-top:.4rem}.GrammarLessonSurface_importanceBox__p0FSM{padding:1rem;border:1px solid color-mix(in srgb,var(--accent) 28%,var(--line));-webkit-border-start:3px solid var(--accent);border-inline-start:3px solid var(--accent);border-radius:var(--radius-md);background:var(--accent-soft)}.GrammarLessonSurface_importanceBox__p0FSM h3{margin:0 0 .5rem;color:var(--text);font-size:1rem;font-family:var(--font-display);font-weight:400}.GrammarLessonSurface_importanceBox__p0FSM p{margin:0;color:var(--text-secondary)}.GrammarLessonSurface_pillarArticle__uRn5s{min-width:0}.GrammarLessonSurface_pillarContent__GMefk{max-width:48rem;margin:1rem auto 0;overflow-wrap:anywhere}.GrammarLessonSurface_pillarContent__GMefk table{display:block;overflow-x:auto;width:100%;margin:1.75rem 0;border:1px solid var(--line);border-radius:var(--radius-md);border-spacing:0;border-collapse:separate;background:var(--surface-raised);box-shadow:var(--shadow-sm);font-size:.92rem;overscroll-behavior-inline:contain}.GrammarLessonSurface_pillarContent__GMefk td,.GrammarLessonSurface_pillarContent__GMefk th{min-width:8rem;padding:.75rem .85rem;border-bottom:1px solid var(--line);text-align:start;vertical-align:top}.GrammarLessonSurface_pillarContent__GMefk th{background:var(--brand-softer);color:var(--brand-emphasis);font-size:.72rem;letter-spacing:.05em;text-transform:uppercase}.GrammarLessonSurface_pillarContent__GMefk td{color:var(--text-secondary)}.GrammarLessonSurface_pillarContent__GMefk tr:last-child td{border-bottom:0}.GrammarLessonSurface_pillarContent__GMefk tbody tr:hover{background:color-mix(in srgb,var(--brand) 4%,transparent)}.GrammarLessonSurface_pillarContent__GMefk code{padding:.12em .35em;border:1px solid var(--line);border-radius:var(--radius-xs);background:var(--canvas-subtle);color:var(--brand-emphasis);font:.88em ui-monospace,SFMono-Regular,Menlo,monospace}.GrammarLessonSurface_pillarContent__GMefk pre{overflow-x:auto;margin:1.75rem 0;padding:1rem;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--canvas-subtle)}.GrammarLessonSurface_pillarContent__GMefk pre code{padding:0;border:0;background:none;color:var(--text)}.GrammarLessonSurface_pillarContent__GMefk blockquote{margin:1.75rem 0;padding:1rem 1.15rem;-webkit-border-start:3px solid var(--brand);border-inline-start:3px solid var(--brand);border-radius:0 var(--radius-sm) var(--radius-sm) 0;background:var(--brand-softer);color:var(--text-secondary)}.GrammarLessonSurface_pillarContent__GMefk blockquote>:last-child{margin-bottom:0}.GrammarLessonSurface_pillarContent__GMefk hr{margin:2.5rem 0;border:0;border-top:1px solid var(--line)}.GrammarLessonSurface_pillarContent__GMefk figure{margin-block:1.75rem;text-align:center}.GrammarLessonSurface_pillarContent__GMefk figure img{display:block;max-width:100%;height:auto;margin-inline:auto;border:1px solid var(--line);border-radius:var(--radius-md);box-shadow:var(--shadow-xs)}.GrammarLessonSurface_pillarContent__GMefk figcaption{max-width:60ch;margin:.65rem auto 0;color:var(--text-muted);font-size:.82rem;font-style:italic}.GrammarLessonSurface_pillarContent__GMefk>:is(figure,table,div[class*=ComparisonSlider_],div[class*=SentenceScrambler_],div[class*=InlineQuiz_]){width:min(calc(100vw - 2rem),60rem);max-width:none;-webkit-margin-start:50%;margin-inline-start:50%;transform:translateX(-50%)}.GrammarLessonSurface_tocContainer__fnc8A{margin:1.5rem 0 2.25rem;padding:1rem 1.1rem;border:1px solid color-mix(in srgb,var(--brand) 25%,var(--line));border-radius:var(--radius-md);background:var(--surface);box-shadow:var(--shadow-sm)}.GrammarLessonSurface_tocContainer__fnc8A summary{display:flex;align-items:center;justify-content:space-between;color:var(--text);font-weight:780;cursor:pointer;list-style:none}.GrammarLessonSurface_tocContainer__fnc8A summary::-webkit-details-marker{display:none}.GrammarLessonSurface_tocContainer__fnc8A summary:after{content:"＋";color:var(--brand-emphasis);transition:transform var(--transition-fast)}.GrammarLessonSurface_tocContainer__fnc8A[open]>summary:after{transform:rotate(45deg)}.GrammarLessonSurface_tocContainer__fnc8A[open]>ul{margin-top:.85rem;padding-top:.85rem;border-top:1px solid var(--line)}.GrammarLessonSurface_tocContainer__fnc8A ul{margin:0;padding:0;list-style:none}.GrammarLessonSurface_tocContainer__fnc8A ul ul{margin:.35rem 0 .5rem .8rem;-webkit-padding-start:.8rem;padding-inline-start:.8rem;-webkit-border-start:1px solid var(--line);border-inline-start:1px solid var(--line)}.GrammarLessonSurface_tocContainer__fnc8A li+li{margin-top:.35rem}.GrammarLessonSurface_tocContainer__fnc8A a{color:var(--text-secondary);font-size:.88rem;text-decoration:none}.GrammarLessonSurface_tocContainer__fnc8A a:hover{color:var(--brand-emphasis)}.GrammarLessonSurface_practiceSection__NFzGe,.GrammarLessonSurface_relatedComparisons__fP4fm{margin-top:2.5rem}.GrammarLessonSurface_practiceSection__NFzGe>h2,.GrammarLessonSurface_relatedComparisons__fP4fm h2{margin:0 0 1rem;color:var(--text);font-family:var(--font-display);font-size:clamp(1.45rem,3vw,1.9rem);font-weight:400}.GrammarLessonSurface_relatedComparisonsGrid__wsGZY{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,16rem),1fr));grid-gap:.8rem;gap:.8rem}.GrammarLessonSurface_relatedComparisonCard__qX30f{display:block;padding:1rem;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--surface-raised);color:var(--text);text-decoration:none;transition:transform var(--transition-fast),border-color var(--transition-fast),box-shadow var(--transition-fast)}.GrammarLessonSurface_relatedComparisonCard__qX30f:hover{border-color:color-mix(in srgb,var(--brand) 42%,var(--line));box-shadow:var(--shadow-sm);transform:translateY(-1px)}.GrammarLessonSurface_relatedComparisonCard__qX30f h3{margin:0 0 .35rem;color:var(--text);font-size:1rem;font-family:var(--font-display);font-weight:400}.GrammarLessonSurface_relatedComparisonCard__qX30f p{margin:0;color:var(--text-muted);font-size:.87rem}.GrammarLessonSurface_interactivePlaceholder__wefq3{min-height:9rem;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--canvas-subtle)}@media (min-width:760px){.GrammarLessonSurface_lessonSection__Q9H06{grid-template-columns:minmax(0,1fr) minmax(13rem,.38fr);align-items:start}.GrammarLessonSurface_importanceBox__p0FSM{position:-webkit-sticky;position:sticky;top:5.5rem}}@media (max-width:560px){.GrammarLessonSurface_container__D8NM1,.GrammarLessonSurface_pillarContainer__wFiK3{width:min(100% - 1.5rem,62rem);padding-top:1rem}.GrammarLessonSurface_header___OaXl{margin-top:1rem}.GrammarLessonSurface_pillarContent__GMefk>:is(figure,table,div[class*=ComparisonSlider_],div[class*=SentenceScrambler_],div[class*=InlineQuiz_]){width:calc(100vw - 1rem)}}@media print{.GrammarLessonSurface_tocContainer__fnc8A{display:none}.GrammarLessonSurface_container__D8NM1,.GrammarLessonSurface_pillarContainer__wFiK3{width:100%;padding:0}.GrammarLessonSurface_pillarContent__GMefk{max-width:none}.GrammarLessonSurface_importanceBox__p0FSM,.GrammarLessonSurface_relatedComparisonCard__qX30f{page-break-inside:avoid;break-inside:avoid;box-shadow:none}}@media (prefers-reduced-motion:reduce){.GrammarLessonSurface_relatedComparisonCard__qX30f,.GrammarLessonSurface_tocContainer__fnc8A summary:after{transition:none}}