.gl-page{--gl-surface:#fffdf8;--gl-surface-muted:#f4f0e7;--gl-surface-sunk:#ebe5d9;--gl-border:#ded5c4;--gl-border-strong:#b6a992;--gl-ink:#142c2a;--gl-ink-soft:#405451;--gl-ink-muted:#52635f;--gl-ink-faint:#5c6d69;--gl-primary:var(--brand-primary-dark,#2f6f6c);--gl-primary-soft:#dcebe8;--gl-accent:var(--brand-accent,#cb5d4e);--gl-shadow:0 1px 2px #142c2a0f,0 18px 40px -32px #142c2aa6;--gl-font-zh:"Noto Sans TC","PingFang TC","Microsoft JhengHei",sans-serif;--gl-concept-a:#2b5a8c;--gl-concept-a-soft:#e3edf8;--gl-concept-b:#b64230;--gl-concept-b-soft:#fae7e0;--gl-concept-c:#795310;--gl-concept-c-soft:#f6ecd6;--gl-text-3xs:.6875rem;--gl-text-2xs:.75rem;--gl-text-xs:.8125rem;--gl-text-sm:.875rem;--gl-text-md:.9375rem;--gl-text-lg:1.0625rem;--gl-text-xl:1.25rem;--gl-text-h3:clamp(1.0625rem,2vw,1.1875rem);--gl-text-h2:clamp(1.375rem,2.4vw,1.875rem);--gl-text-h1:clamp(1.75rem,4vw,2.375rem);--gl-text-display:clamp(1.75rem,5vw,3rem);--gl-zh-lg:clamp(1.25rem,3.4vw,1.625rem);--gl-zh-hero:clamp(1.3125rem,3.6vw,1.75rem);--gl-slide-glyph:clamp(2rem,5vw,3rem);--gl-slide-label:clamp(var(--gl-text-md),1.9vw,var(--gl-text-lg));--gl-slide-example:var(--gl-text-sm);--gl-slide-intro:clamp(var(--gl-text-sm),1.7vw,var(--gl-text-md));--gl-slide-body:var(--gl-text-sm);--gl-role-actor:#3d7cc8;--gl-role-actor-soft:#3d7cc81f;--gl-role-object:#b8860b;--gl-role-object-soft:#b8860b24;--gl-role-action:#2e8b57;--gl-role-action-soft:#2e8b5721;--gl-role-result:#cb5d4e;--gl-role-result-soft:#cb5d4e21;--gl-role-time:#64748b;--gl-role-time-soft:#64748b1f;--gl-role-marker:#7c3aed;--gl-role-marker-soft:#7c3aed1f;background-color:var(--gl-surface-muted);min-height:100vh;color:var(--gl-ink);font-family:var(--font-body),system-ui,sans-serif;background-image:radial-gradient(#2f6f6c0e .75px,#0000 .75px);background-size:18px 18px}.gl-page [lang=zh-Hant-TW]{font-family:var(--gl-font-zh);font-feature-settings:"palt" 0}.gl-page__container{max-width:70rem;margin:0 auto;padding:0 1.25rem}.gl-page__hero{border-bottom:1px solid var(--gl-border);background:var(--gl-surface);padding:7rem 0 3.5rem}.gl-page__eyebrow{color:var(--gl-primary);font-size:var(--gl-text-2xs);letter-spacing:.1em;text-transform:uppercase;font-weight:700}.gl-page__title{font-family:var(--font-display),var(--font-body),system-ui,sans-serif;font-size:var(--gl-text-h1);letter-spacing:-.01em;margin-top:.5rem;font-weight:700;line-height:1.25}.gl-page__lead{max-width:44rem;color:var(--gl-ink-muted);font-size:var(--gl-text-md);margin-top:1rem;line-height:1.85}.gl-page__art{margin:0}.gl-page__art img{border-radius:1rem;width:100%;height:auto;display:block}.gl-page__split{gap:1.75rem;display:grid}.gl-page__split .gl-page__art img{aspect-ratio:2;object-fit:cover}@media (min-width:52rem){.gl-page__split{grid-template-columns:minmax(0,1fr) minmax(0,26rem);align-items:center;gap:3rem}.gl-page__split .gl-page__art img{aspect-ratio:16/9}}.gl-page__main{padding-top:2.5rem;padding-bottom:5rem}.gl-page__main--top{padding-top:5.5rem}.gl-section{margin-top:clamp(2.25rem,5vw,3rem)}.gl-section--stage,.gl-section--practice,.gl-section--cta{border:1px solid var(--gl-border);background:var(--gl-surface);box-shadow:var(--gl-shadow);border-radius:1.5rem;padding:clamp(1.35rem,3vw,2.25rem)}.gl-section__heading{margin-bottom:clamp(.9rem,2.2vw,1.25rem)}.gl-section__kicker{color:var(--gl-accent);font-size:var(--gl-text-3xs);letter-spacing:.14em;text-transform:uppercase;align-items:center;gap:.5rem;margin-bottom:.45rem;font-weight:800;display:flex}.gl-section__kicker:before{content:"";background:currentColor;border-radius:999px;flex:none;width:1.5rem;height:2px}.gl-section__kicker--stepped:before{display:none}.gl-section__step{background:color-mix(in srgb,var(--gl-accent)85%,black);color:#fff;width:1.5rem;height:1.5rem;font-size:var(--gl-text-3xs);letter-spacing:0;border-radius:999px;flex:none;justify-content:center;align-items:center;font-weight:800;display:inline-flex}.gl-tier{color:var(--gl-ink-faint);font-size:var(--gl-text-3xs);letter-spacing:.08em;align-items:center;gap:.45rem;margin-top:.9rem;font-weight:700;display:flex}.gl-tier__mark{background:var(--gl-border-strong);flex:none;width:.9rem;height:1px}.gl-section__title{font-family:var(--font-display),var(--font-body),system-ui,sans-serif;font-size:var(--gl-text-h2);letter-spacing:.01em;font-weight:700;line-height:1.35}.gl-section__lead{color:var(--gl-ink-muted);font-size:var(--gl-text-md);margin-top:.5rem;line-height:1.8}.gl-note{color:var(--gl-ink-muted);font-size:var(--gl-text-sm);line-height:1.8}.gl-tag{border:1px solid var(--gl-border);background:var(--gl-surface-muted);color:var(--gl-ink-muted);font-size:var(--gl-text-3xs);border-radius:999px;align-items:center;padding:.125rem .5rem;display:inline-flex}.gl-badge{background:var(--gl-primary-soft);color:var(--gl-primary);font-size:var(--gl-text-2xs);border:1px solid #0000;border-radius:999px;align-items:center;padding:.25rem .625rem;font-weight:700;display:inline-flex}.gl-badge--ghost{border-color:var(--gl-border);color:var(--gl-ink-muted);background:0 0;font-weight:600}.gl-visually-hidden{clip:rect(0 0 0 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.gl-button{border:1px solid var(--gl-border);background:var(--gl-surface);color:var(--gl-ink);font-size:var(--gl-text-sm);cursor:pointer;border-radius:999px;align-items:center;gap:.4rem;padding:.5rem 1rem;font-weight:600;transition:background-color .15s,border-color .15s;display:inline-flex}.gl-button:hover:not(:disabled){background:var(--gl-surface-muted)}.gl-button:disabled{opacity:.5;cursor:not-allowed}.gl-button--primary{background:var(--gl-primary);color:#fff;border-color:#0000}.gl-button--primary:hover:not(:disabled){background:color-mix(in srgb,var(--gl-primary)88%,black)}.gl-button--lg{font-size:var(--gl-text-md);padding:.75rem 1.25rem}.gl-button.is-active{border-color:var(--gl-primary);background:var(--gl-primary-soft);color:var(--gl-primary)}.gl-link-button{color:var(--gl-primary);font:inherit;cursor:pointer;background:0 0;border:0;padding:0;text-decoration:underline}.gl-icon-button{border:1px solid var(--gl-border);background:var(--gl-surface);width:2rem;height:2rem;color:var(--gl-ink-soft);cursor:pointer;border-radius:999px;justify-content:center;align-items:center;display:inline-flex}.gl-chip-list{flex-wrap:wrap;gap:.4rem;margin-top:.5rem;padding:0;list-style:none;display:flex}.gl-chip{border:1px solid var(--gl-border);background:var(--gl-surface);color:var(--gl-ink-soft);font-size:var(--gl-text-xs);cursor:pointer;border-radius:999px;padding:.3rem .7rem}.gl-chip:hover{background:var(--gl-surface-muted)}.gl-chip.is-active{border-color:var(--gl-primary);background:var(--gl-primary-soft);color:var(--gl-primary);font-weight:700}.gl-chip.is-empty{opacity:.5}.gl-chip__count{font-variant-numeric:tabular-nums;opacity:.75;margin-left:.35rem}.gl-page :is(a,button,input,[tabindex]):focus-visible{outline:2px solid var(--gl-primary);outline-offset:2px}.gl-sentence{flex-direction:column;gap:.15rem;display:flex}.gl-sentence__target{color:var(--gl-ink);font-size:var(--gl-text-lg);font-weight:600;line-height:1.7}.gl-sentence--lg .gl-sentence__target{font-size:var(--gl-zh-lg);line-height:1.5}.gl-sentence__zhuyin{color:var(--gl-ink-soft);font-size:var(--gl-text-xs);letter-spacing:.04em;word-break:keep-all;overflow-wrap:anywhere;line-height:1.9}.gl-sentence__pinyin{color:var(--gl-ink-muted);font-size:var(--gl-text-xs);line-height:1.7}.gl-mark{background:var(--gl-role-result-soft);color:var(--gl-role-result);text-underline-offset:.2em;border-radius:.25rem;padding:0 .15rem;font-weight:700;text-decoration:underline}.gl-lesson__header{padding:.5rem 0 0}.gl-lesson__meta{flex-wrap:wrap;align-items:center;gap:.4rem .6rem;display:flex}.gl-breadcrumb{color:var(--gl-ink-faint);font-size:var(--gl-text-xs);flex-wrap:wrap;align-items:center;gap:.4rem;display:flex}.gl-breadcrumb a{color:var(--gl-primary)}.gl-lesson__level-note{color:var(--gl-ink-faint);font-size:var(--gl-text-3xs)}.gl-lesson__title{font-family:var(--font-display),var(--font-body),system-ui,sans-serif;font-size:var(--gl-text-display);margin-top:.75rem;font-weight:700;line-height:1.3}.gl-lesson__description{max-width:none;color:var(--gl-ink-muted);font-size:var(--gl-text-md);line-break:strict;text-wrap:pretty;margin-top:.6rem;line-height:1.85}@media (min-width:48rem){.gl-lesson__toggle{margin-inline-start:auto}}.gl-toggle{flex-wrap:wrap;align-items:center;gap:.5rem;display:flex}.gl-toggle__label{color:var(--gl-ink-faint);font-size:var(--gl-text-2xs);font-weight:700}.gl-toggle__options{border:1px solid var(--gl-border);background:var(--gl-surface-sunk);border-radius:999px;padding:.15rem;display:inline-flex}.gl-toggle__option{color:var(--gl-ink-muted);font-size:var(--gl-text-xs);cursor:pointer;background:0 0;border:0;border-radius:999px;padding:.3rem .7rem}.gl-toggle__option.is-active{background:var(--gl-surface);color:var(--gl-primary);font-weight:700;box-shadow:0 1px 2px #0f172a14}.gl-section--stage{border-color:color-mix(in srgb,var(--gl-primary)30%,var(--gl-border));margin-top:1.5rem}.gl-lesson__rail{display:none}.gl-rail__title{color:var(--gl-ink-faint);font-size:var(--gl-text-3xs);letter-spacing:.12em;font-weight:800}.gl-rail__note{color:var(--gl-ink-faint);font-size:var(--gl-text-2xs);margin-top:.875rem;line-height:1.7}.gl-rail__link{color:var(--gl-primary);font-size:var(--gl-text-xs);margin-top:.75rem;font-weight:700;display:inline-block}.gl-role-actor{--gl-role:var(--gl-role-actor);--gl-role-bg:var(--gl-role-actor-soft)}.gl-role-object,.gl-role-classifier{--gl-role:var(--gl-role-object);--gl-role-bg:var(--gl-role-object-soft)}.gl-role-action{--gl-role:var(--gl-role-action);--gl-role-bg:var(--gl-role-action-soft)}.gl-role-result,.gl-role-property{--gl-role:var(--gl-role-result);--gl-role-bg:var(--gl-role-result-soft)}.gl-role-time,.gl-role-number{--gl-role:var(--gl-role-time);--gl-role-bg:var(--gl-role-time-soft)}.gl-role-marker{--gl-role:var(--gl-role-marker);--gl-role-bg:var(--gl-role-marker-soft)}.gl-concept-a{--gl-concept:var(--gl-concept-a);--gl-concept-bg:var(--gl-concept-a-soft)}.gl-concept-b{--gl-concept:var(--gl-concept-b);--gl-concept-bg:var(--gl-concept-b-soft)}.gl-concept-c{--gl-concept:var(--gl-concept-c);--gl-concept-bg:var(--gl-concept-c-soft)}.gl-pitfalls{gap:.875rem;margin-top:1rem;display:grid}.gl-pitfall+.gl-pitfall{border-top:1px dashed var(--gl-border);padding-top:1.25rem}.gl-pitfall__title{font-size:var(--gl-text-lg);font-weight:700}.gl-pitfall__body{color:var(--gl-ink-muted);font-size:var(--gl-text-md);margin-top:.4rem;line-height:1.85}.gl-pitfall__pair{gap:.625rem;margin-top:.5rem;display:grid}@media (min-width:40rem){.gl-pitfall__pair{grid-template-columns:1fr 1fr}}.gl-pitfall__case{border-left:3px solid var(--gl-border);padding:.15rem 0 .15rem .75rem}.gl-pitfall__case--wrong{border-left-style:dashed;border-left-color:var(--ui-danger,#e24a4a)}.gl-pitfall__case--right{border-left-color:var(--ui-success,#2e8b57)}.gl-pitfall__case--meaning{border-left-color:var(--gl-concept)}.gl-pitfall__case-label{font-size:var(--gl-text-3xs);align-items:center;gap:.3rem;font-weight:700;display:flex}.gl-pitfall__case--wrong .gl-pitfall__case-label{color:var(--ui-danger,#e24a4a)}.gl-pitfall__case--right .gl-pitfall__case-label{color:var(--ui-success,#2e8b57)}.gl-pitfall__case--meaning .gl-pitfall__case-label{color:var(--gl-concept)}.gl-pitfall__case-text{font-size:var(--gl-text-lg);margin-top:.35rem;font-weight:600}.gl-pitfall__case-why{color:var(--gl-ink-muted);font-size:var(--gl-text-sm);margin-top:.3rem;line-height:1.8}.gl-rules,.gl-contrasts,.gl-usage{gap:1.1rem;margin-top:1rem;display:grid}.gl-rule+.gl-rule,.gl-contrast+.gl-contrast,.gl-usage__item+.gl-usage__item{border-top:1px dashed var(--gl-border);padding-top:1.1rem}.gl-rule__title,.gl-contrast__title,.gl-usage__title{font-size:var(--gl-text-lg);font-weight:700}.gl-rule__body{color:var(--gl-ink-muted);font-size:var(--gl-text-md);margin-top:.35rem;line-height:1.75}.gl-rule__pattern{background:var(--gl-surface-muted);color:var(--gl-primary);font-size:var(--gl-text-md);border-radius:.5rem;margin-top:.35rem;padding:.45rem .7rem;font-weight:700}.gl-usage__body{color:var(--gl-ink-muted);font-size:var(--gl-text-md);margin-top:.4rem;line-height:1.75}@media (min-width:40rem){.gl-rule{grid-template-columns:minmax(0,1fr) minmax(0,16rem);grid-template-areas:"title pattern""body pattern";align-items:start;column-gap:1.25rem;display:grid}.gl-rule__title{grid-area:title}.gl-rule__body{grid-area:body}.gl-rule__pattern-tier{grid-area:pattern}.gl-rule__pattern-tier .gl-tier{margin-top:.2rem}}.gl-contrast__list{gap:.625rem;margin:.5rem 0 0;padding:0;list-style:none;display:grid}.gl-contrast__item{border-left:3px solid var(--gl-concept,var(--gl-border));padding-left:.75rem}.gl-contrast__badge{background:var(--gl-concept-bg);color:var(--gl-concept);font-size:var(--gl-text-3xs);letter-spacing:.04em;border-radius:999px;align-items:center;margin-bottom:.35rem;padding:.2rem .55rem;font-weight:800;line-height:1.35;display:inline-flex}.gl-contrast__item .gl-mark{background:var(--gl-concept-bg);color:var(--gl-concept);-webkit-text-decoration-color:var(--gl-concept);text-decoration-color:var(--gl-concept)}@media (min-width:40rem){.gl-contrast__list{grid-template-columns:1fr 1fr;gap:.75rem 1.25rem}}.gl-contrast__translation{color:var(--gl-ink-soft);font-size:var(--gl-text-sm);margin-top:.2rem}.gl-contrast__note,.gl-example__note{color:var(--gl-ink-faint);font-size:var(--gl-text-xs);margin-top:.2rem;line-height:1.6}.gl-contrast__takeaway{border-left:2px solid var(--gl-border-strong);background:var(--gl-surface-muted);color:var(--gl-ink-soft);font-size:var(--gl-text-sm);border-radius:0 .5rem .5rem 0;margin-top:.75rem;padding:.55rem .75rem;line-height:1.8}.gl-contrast__takeaway-label{color:var(--gl-ink-faint);font-size:var(--gl-text-3xs);letter-spacing:.08em;align-items:center;margin-right:.5rem;font-weight:800;display:inline-flex}.gl-examples__filters{flex-wrap:wrap;align-items:center;gap:.5rem .75rem;margin-top:1rem;display:flex}.gl-examples__filters-label{color:var(--gl-ink-faint);font-size:var(--gl-text-3xs);letter-spacing:.08em;font-weight:700}.gl-examples__chips{flex-wrap:wrap;gap:.4rem;display:flex}.gl-examples__chip{border:1px solid var(--gl-border);background:var(--gl-surface);color:var(--gl-ink-soft);font-size:var(--gl-text-xs);cursor:pointer;border-radius:999px;align-items:center;gap:.35rem;padding:.3rem .7rem;font-weight:600;display:inline-flex}.gl-examples__chip:hover{background:var(--gl-surface-muted)}.gl-examples__chip.is-active{border-color:var(--gl-concept,var(--gl-primary));background:var(--gl-concept-bg,var(--gl-primary-soft));color:var(--gl-concept,var(--gl-primary));font-weight:800}.gl-examples__chip-count{color:var(--gl-ink-faint);font-size:var(--gl-text-3xs);font-weight:600}.gl-examples__chip.is-active .gl-examples__chip-count{color:inherit}.gl-examples__empty{color:var(--gl-ink-muted);font-size:var(--gl-text-sm);margin-top:1rem}.gl-select-button{border:1px solid var(--gl-border);background:var(--gl-surface);color:var(--gl-ink-muted);font-size:var(--gl-text-2xs);cursor:pointer;border-radius:999px;align-items:center;gap:.4rem;padding:.35rem .75rem;display:inline-flex}.gl-select-button.is-selected{border-color:var(--gl-primary);background:var(--gl-primary-soft);color:var(--gl-primary);font-weight:700}.gl-select-button__box{border:1px solid;border-radius:.25rem;justify-content:center;align-items:center;width:1rem;height:1rem;display:inline-flex}.gl-practice{container-type:inline-size}.gl-question__situation{font-size:var(--gl-text-md);margin-top:.5rem;line-height:1.85}.gl-question__prompt{font-size:var(--gl-zh-hero);margin-top:.5rem;font-weight:700;line-height:1.5}.gl-choices{gap:.5rem;margin-top:.875rem;display:grid}@container (min-width:32rem){.gl-choices{grid-template-columns:repeat(3,minmax(0,1fr))}}.gl-choice{border:1px solid var(--gl-border);background:var(--gl-surface);text-align:left;cursor:pointer;border-radius:.75rem;justify-content:space-between;align-items:center;gap:.5rem;padding:.7rem .875rem;display:flex}.gl-choice__text{font-size:var(--gl-text-lg);font-weight:600}.gl-choice.is-answer{border-color:var(--ui-success,#2e8b57);background:var(--ui-success-soft,#2e8b5714)}.gl-choice.is-picked{border-style:dashed;border-color:var(--ui-danger,#e24a4a);background:var(--ui-danger-soft,#e24a4a14)}.gl-choice__tag{color:var(--ui-success,#2e8b57);font-size:var(--gl-text-3xs);align-items:center;gap:.2rem;font-weight:700;display:inline-flex}.gl-verdict{font-size:var(--gl-text-sm);align-items:center;gap:.35rem;font-weight:700;display:flex}.gl-verdict.is-correct{color:var(--ui-success,#2e8b57)}.gl-verdict.is-wrong{color:var(--ui-danger,#e24a4a)}.gl-feedback{border:1px solid var(--gl-border);background:var(--gl-surface-muted);border-radius:.75rem;margin-top:.875rem;padding:.875rem}.gl-feedback__body{color:var(--gl-ink-muted);font-size:var(--gl-text-sm);margin-top:.4rem;line-height:1.85}.gl-feedback__answer{margin-top:.5rem}.gl-feedback__answer-label{color:var(--gl-ink-faint);font-size:var(--gl-text-3xs);font-weight:700;display:block}.gl-checkpoints{color:var(--gl-ink-muted);font-size:var(--gl-text-sm);margin:.75rem 0 0;padding-left:1.1rem;line-height:1.85}.gl-order__slots,.gl-order__pool{flex-wrap:wrap;align-items:center;gap:.4rem;min-height:3rem;margin:.4rem 0 0;padding:0;list-style:none;display:flex}.gl-order__slots{border:1px dashed var(--gl-border);border-radius:.75rem;padding:.5rem}.gl-order__empty{color:var(--gl-ink-faint);font-size:var(--gl-text-sm)}.gl-order__slot{align-items:center;gap:.15rem;display:inline-flex}.gl-order__chunk{border:1px solid var(--gl-border);background:var(--gl-surface);font-size:var(--gl-text-lg);cursor:pointer;border-radius:.5rem;padding:.4rem .65rem;font-weight:600}.gl-order__chunk:disabled{opacity:.3;cursor:not-allowed}.gl-order__nudge{width:1.25rem;height:1.75rem;color:var(--gl-ink-faint);cursor:pointer;background:0 0;border:0;border-radius:.35rem;justify-content:center;align-items:center;display:inline-flex}.gl-order__nudge:disabled{opacity:.25;cursor:not-allowed}.gl-order__actions{flex-wrap:wrap;gap:.5rem;margin-top:.875rem;display:flex}.gl-cta__row{flex-wrap:wrap;gap:.625rem;margin-top:1rem;display:flex}.gl-cta__note{color:var(--gl-ink-faint);font-size:var(--gl-text-xs);margin-top:.75rem;line-height:1.7}.gl-cta__pending{border:1px solid var(--gl-primary);background:var(--gl-primary-soft);border-radius:.875rem;padding:1rem}.gl-cta__pending-title{font-size:var(--gl-text-md);font-weight:700}.gl-cta__pending-list{color:var(--gl-ink-soft);font-size:var(--gl-text-sm);margin:.5rem 0 0;padding-left:1.1rem;line-height:1.8}.gl-spin{animation:1s linear infinite gl-spin}@keyframes gl-spin{to{transform:rotate(360deg)}}.gl-hub__facets{gap:1rem;margin-top:1rem;display:grid}.gl-hub__facet-label{color:var(--gl-ink-soft);font-size:var(--gl-text-xs);font-weight:700}.gl-hub__filter-state{color:var(--gl-ink-muted);font-size:var(--gl-text-xs);flex-wrap:wrap;align-items:center;gap:.5rem;margin-top:1rem;display:flex}.gl-hub__list{gap:.75rem;margin:1rem 0 0;padding:0;list-style:none;display:grid}.gl-hub__level-group+.gl-hub__level-group{margin-top:1.5rem}.gl-hub__level-heading{color:var(--gl-ink-soft);font-size:var(--gl-text-xs);font-weight:700}.gl-hub__card{border:1px solid var(--gl-border);background:var(--gl-surface);border-radius:.875rem;flex-direction:column;gap:.35rem;padding:1rem;transition:border-color .15s,box-shadow .15s;display:flex}.gl-hub__card:hover{border-color:var(--gl-primary);box-shadow:0 3px 10px #0f172a0f}.gl-hub__card-level{color:var(--gl-primary);font-size:var(--gl-text-3xs);font-weight:700}.gl-hub__card-title{font-family:var(--font-display),var(--font-body),system-ui,sans-serif;font-size:var(--gl-text-lg);font-weight:700}.gl-hub__card-quick{color:var(--gl-ink-muted);font-size:var(--gl-text-sm);line-height:1.8}.gl-hub__card-traps{flex-wrap:wrap;gap:.3rem;margin-top:.25rem;display:flex}.gl-lesson__editorial{border-top:1px solid var(--gl-border);margin-top:clamp(2.25rem,5vw,3rem);padding-top:1.25rem}.gl-editorial__sources{color:var(--gl-ink-muted);font-size:var(--gl-text-2xs);margin:0;padding-left:1.1rem;line-height:1.8}.gl-editorial__note{color:var(--gl-ink-faint);display:block}.gl-related__list{grid-template-columns:1fr;gap:.75rem;margin:1rem 0 0;padding:0;list-style:none;display:grid}.gl-related__list>li{min-width:0}.gl-related__card{border:1px solid var(--gl-border);border-radius:.75rem;flex-direction:column;gap:.4rem;height:100%;padding:.875rem;transition:border-color .15s;display:flex}a.gl-related__card:hover{border-color:var(--gl-primary)}.gl-related__card-title{font-size:var(--gl-text-md);margin:0;font-weight:700}.gl-related__card-body{color:var(--gl-ink-muted);font-size:var(--gl-text-sm);margin:0;line-height:1.65}.gl-related__card-meta{color:var(--gl-ink-faint);font-size:var(--gl-text-2xs);margin-top:auto;padding-top:.25rem}.gl-related__card--upcoming{background:0 0}@media (min-width:48rem){.gl-related__list{grid-template-columns:repeat(3,minmax(0,1fr))}}.gl-section--pitfalls,.gl-section--patterns,.gl-section--contrasts,.gl-section--examples,.gl-section--usage,.gl-section--related{border-top:1px solid var(--gl-border);padding-top:clamp(1.75rem,4vw,2.5rem)}.gl-lesson__body>.gl-section:first-child{border-top:0;padding-top:0}.gl-section--practice{border-top:.35rem solid var(--gl-primary)}.gl-section--cta{background:linear-gradient(135deg,var(--gl-surface),var(--gl-primary-soft))}@media (min-width:64rem){.gl-lesson--railed{grid-template-columns:minmax(0,1fr) 15.5rem;column-gap:3rem;display:grid}.gl-lesson--railed>*{min-width:0}.gl-lesson--railed .gl-lesson__header,.gl-lesson--railed .gl-section--stage,.gl-lesson--railed .gl-lesson__divider{grid-column:1/-1}.gl-lesson--railed .gl-lesson__body{grid-area:4/1}.gl-lesson--railed .gl-lesson__rail{border-left:1px solid var(--gl-border);grid-area:4/2;align-self:start;margin-top:clamp(2.25rem,5vw,3rem);padding-left:1.25rem;display:block;position:sticky;top:5.5rem}.gl-lesson:not(.gl-lesson--railed) .gl-section{max-width:52rem}}@media (max-width:30rem){.gl-page__container{padding-inline:.875rem}.gl-page__main--top{padding-top:4.65rem}.gl-lesson__header{padding:.5rem .25rem 0}.gl-breadcrumb{font-size:var(--gl-text-2xs)}.gl-lesson__level-note{flex-basis:100%}.gl-lesson__title{margin-top:.65rem}.gl-lesson__description{margin-top:.5rem;line-height:1.65}.gl-lesson__toggle{margin-top:.75rem}.gl-toggle{display:block}.gl-toggle__label{clip:rect(0 0 0 0);width:1px;height:1px;position:absolute;overflow:hidden}.gl-toggle__options{grid-template-columns:repeat(3,minmax(0,1fr));width:100%;display:grid}.gl-toggle__option{font-size:var(--gl-text-2xs);white-space:nowrap;padding:.32rem .2rem}.gl-section{border-radius:1.1rem;margin-top:1rem;padding:1.15rem}.gl-section--patterns{padding-inline:.2rem}}@media (prefers-reduced-motion:reduce){.gl-page *,.gl-page :before,.gl-page :after{transition-duration:.001ms!important;animation-duration:.001ms!important;animation-iteration-count:1!important}}.dark .gl-page{--gl-surface:#152524;--gl-surface-muted:#0d1a19;--gl-surface-sunk:#0a1413;--gl-border:#2b3d3b;--gl-border-strong:#526562;--gl-ink:#ecf1ea;--gl-ink-soft:#c2cfcc;--gl-ink-muted:#adbdba;--gl-ink-faint:#91a39f;--gl-primary:#74c3bd;--gl-primary-soft:#12332f;--gl-concept-a:#8bbdec;--gl-concept-a-soft:#122a41;--gl-concept-b:#f08a73;--gl-concept-b-soft:#3b1d16;--gl-concept-c:#e0b968;--gl-concept-c-soft:#33260d;--gl-role-actor:#8bbdec;--gl-role-object:#e0b968;--gl-role-action:#75cf9f;--gl-role-result:#f08a73;--gl-role-time:#adbdba;--gl-role-marker:#b9a0ef;--text-primary:var(--gl-ink);--text-secondary:var(--gl-ink-muted);--border-default:var(--gl-border)}.dark .gl-page .lp-header{background:color-mix(in srgb,var(--gl-surface)88%,transparent)}.dark .gl-page .lp-header .mobile-menu{background:var(--gl-surface)}.gl-lesson--learn{--gl-text-sm:1rem;--gl-text-md:1.0625rem;--gl-text-xs:.875rem;--gl-zh-lg:clamp(1.5rem,2.4vw,1.875rem);--gl-zh-stage:clamp(2rem,4.6vw,3.25rem);--gl-text-h1:clamp(2rem,4vw,2.75rem);--gl-text-h2:clamp(1.5rem,2.6vw,1.875rem);--gl-rule:1px solid var(--gl-border)}.gl-lesson--learn .gl-role-marker{--gl-role:var(--gl-primary);--gl-role-bg:var(--gl-primary-soft)}.gl-lesson--learn [class*=gl-role-]{--gl-hl:color-mix(in srgb,var(--gl-role)42%,transparent)}.dark .gl-lesson--learn [class*=gl-role-]{--gl-hl:color-mix(in srgb,var(--gl-role)60%,transparent)}.gl-hl{background:linear-gradient(transparent 76%,var(--gl-hl,transparent)76%,var(--gl-hl,transparent)96%,transparent 96%);-webkit-box-decoration-break:clone;box-decoration-break:clone}.gl-lesson--learn .gl-lesson__header{padding-bottom:0;position:relative}.gl-learn-heading{flex-wrap:wrap;align-items:center;gap:.5rem 1rem;margin-top:1rem;display:flex}.gl-lesson--learn .gl-lesson__title{font-size:var(--gl-text-h1);letter-spacing:-.02em;font-feature-settings:"palt";margin:0;line-height:1.25}.gl-learn-subhead{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.75rem 2rem;margin-top:.75rem;display:flex}.gl-lesson--learn .gl-lesson__description{max-width:42rem;color:var(--gl-ink-soft);flex:24rem;margin:0;font-size:1.0625rem}.gl-lesson--learn .gl-lesson__toggle{margin:0}.gl-lesson--learn .gl-section--stage{border-radius:1.5rem;margin-top:1.75rem;padding:0;overflow:hidden}.gl-stage{color:var(--gl-ink);background:radial-gradient(110% 70% at 50% 0%,color-mix(in srgb,var(--gl-primary-soft)75%,transparent),transparent 72%),var(--gl-surface);position:relative}.gl-deck{min-width:0;position:relative}.gl-deck button{cursor:pointer}.gl-deck__head{justify-content:space-between;align-items:center;gap:.5rem;display:flex}.gl-deck__steps{flex:1;justify-content:center;gap:1.5rem;min-width:0;display:flex}.gl-deck__steps button{min-height:2.75rem;color:var(--gl-ink-muted);white-space:nowrap;border-radius:999px;align-items:center;gap:.5rem;padding:.25rem .75rem .25rem .375rem;font-size:.9375rem;font-weight:600;transition:background-color .15s,color .15s;display:inline-flex;position:relative}.gl-deck__steps button:hover{background:color-mix(in srgb,var(--gl-primary-soft)70%,transparent);color:var(--gl-ink)}.gl-deck__steps button+button:before{content:"";background:var(--gl-border-strong);border-radius:2px;width:1rem;height:2px;position:absolute;top:50%;right:calc(100% + .25rem)}.gl-deck__steps button:is([aria-pressed=true],[data-done=true]):before{background:var(--gl-primary)}.gl-deck__step-no{border:2px solid var(--gl-border-strong);font-variant-numeric:tabular-nums;border-radius:50%;place-items:center;width:1.75rem;height:1.75rem;font-size:.8125rem;font-weight:800;display:inline-grid}.gl-deck__steps button[aria-pressed=true]{color:var(--gl-ink)}.gl-deck__steps button[aria-pressed=true] .gl-deck__step-no{border-color:var(--gl-primary);background:var(--gl-primary);color:var(--gl-surface)}.gl-deck__steps button[data-done=true]:not([aria-pressed=true]) .gl-deck__step-no{border-color:var(--gl-primary);color:var(--gl-primary)}.gl-deck__counter{color:var(--gl-ink);font-variant-numeric:tabular-nums;text-align:center;flex:1;font-size:1rem;font-weight:800}.gl-deck__counter span{color:var(--gl-ink-faint);font-weight:600}.gl-deck__arrow{border:1px solid var(--gl-border);background:var(--gl-surface);width:2.75rem;height:2.75rem;color:var(--gl-ink);border-radius:50%;flex:none;place-items:center;transition:opacity .2s,color .15s,border-color .15s;display:grid}.gl-deck__arrow:hover{border-color:var(--gl-primary);color:var(--gl-primary)}.gl-deck__arrow:disabled{opacity:.3;pointer-events:none}.gl-deck__track{overscroll-behavior-x:contain;scroll-snap-type:x mandatory;scrollbar-width:none;display:flex;overflow:auto hidden}.gl-deck__track::-webkit-scrollbar{display:none}.gl-deck__slide{scroll-snap-align:start;scroll-snap-stop:always;flex:0 0 100%;min-width:0;padding-inline:3px}@media (min-width:48.01rem){.gl-deck--side .gl-deck__head{justify-content:center;padding:1rem 4rem 0}.gl-deck--side .gl-deck__steps{flex:none}.gl-deck--side .gl-deck__arrow{z-index:2;width:3rem;height:3rem;position:absolute;top:50%;transform:translateY(-50%);box-shadow:0 6px 18px -12px #142c2a80}.gl-deck--side .gl-deck__arrow--prev{left:1rem}.gl-deck--side .gl-deck__arrow--next{right:1rem}.gl-deck--side .gl-deck__arrow:disabled{opacity:0}}.gl-stable-panels{min-width:0;display:grid}.gl-stable-panel{visibility:hidden;pointer-events:none;grid-area:1/1;min-width:0}.gl-stable-panel[data-active=true]{visibility:visible;pointer-events:auto}.gl-stable-panel[data-active=false] *{visibility:hidden!important}.gl-stage .gl-deck__slide{text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:1.75rem;padding:clamp(1.5rem,3.5vw,2.5rem) clamp(4.5rem,8vw,6rem) clamp(2rem,4vw,3rem);display:flex}.gl-slide__title{color:var(--gl-ink);letter-spacing:-.02em;text-wrap:balance;white-space:pre-line;word-break:auto-phrase;font-size:clamp(1.375rem,2.6vw,1.875rem);font-weight:700;line-height:1.5}.gl-overview__examples{gap:2rem;width:100%;display:grid}.gl-overview__example{min-width:0}.gl-overview__example+.gl-overview__example{border-top:var(--gl-rule);padding-top:2rem}.gl-overview__sentence{flex-wrap:wrap;justify-content:center;align-items:start;gap:.5rem 1.25rem;display:flex}.gl-overview__group{justify-items:center;gap:.375rem;min-width:0;display:grid}.gl-overview__words{color:var(--gl-ink);font-size:var(--gl-zh-stage);line-height:1.4}.gl-overview__words mark{color:var(--gl-primary);font-weight:700}.gl-overview__meaning{color:var(--gl-ink-soft);font-size:1rem;line-height:1.6}.gl-overview__reading{margin-top:1.25rem}.gl-overview__reading .gl-sentence__target{clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.gl-overview__reading :is(.gl-sentence__zhuyin,.gl-sentence__pinyin){overflow-wrap:anywhere;font-size:.9375rem;line-height:1.8}.gl-learn-diagram{flex-direction:column;align-items:center;width:100%;min-width:0;max-width:46rem;display:flex}.gl-learn-switch{background:var(--gl-surface-sunk);border-radius:999px;flex-wrap:wrap;justify-content:center;gap:.25rem;margin-bottom:1.75rem;padding:.25rem;display:inline-flex}.gl-learn-switch button{min-height:2.75rem;color:var(--gl-ink-muted);cursor:pointer;background:0 0;border:0;border-radius:999px;padding:.5rem 1.125rem;font-size:1rem;font-weight:600}.gl-learn-switch button[aria-pressed=true]{background:var(--gl-surface);color:var(--gl-primary);box-shadow:0 1px 3px #142c2a24}.gl-learn-diagram>.gl-stable-panels{width:100%}.gl-diagram-label{color:var(--gl-ink-muted);margin-bottom:.65rem;font-size:.875rem;line-height:1.7}.gl-learn-example{min-width:0}.gl-learn-example+.gl-learn-example{border-top:var(--gl-rule);padding-top:1.5rem}.gl-learn-example .gl-sentence{align-items:center}.gl-learn-example .gl-sentence__target{font-size:var(--gl-zh-lg);overflow-wrap:anywhere;font-weight:600;line-height:1.65}.gl-learn-example .gl-sentence__zhuyin,.gl-learn-example .gl-sentence__pinyin{overflow-wrap:anywhere;font-size:.9375rem;line-height:1.8}.gl-learn-example__translation{color:var(--gl-ink-soft);margin-top:.5rem;font-size:1.0625rem;line-height:1.8}.gl-learn-reason{max-width:34rem;color:var(--gl-ink);text-wrap:pretty;margin:1.25rem auto 0;font-size:1.0625rem;font-weight:500;line-height:1.8}.gl-state-path{grid-template-columns:1fr auto 1fr;align-items:center;gap:1rem;width:100%;max-width:26rem;margin:0 auto 1.25rem;display:grid;position:relative}.gl-state-path>div{color:var(--gl-ink-faint);text-align:center;opacity:.55;gap:.25rem;transition:opacity .2s;display:grid}.gl-state-path>div[data-current=true]{color:var(--gl-ink);opacity:1}.gl-state-path>div:nth-child(2){grid-column:3}.gl-state-path strong{font-size:clamp(1.75rem,3.4vw,2.25rem);font-weight:600}.gl-state-path>div>span{font-size:.875rem}.gl-state-path__arrow{color:var(--gl-primary);grid-area:1/2;font-size:1.5rem}.gl-chunk-track{flex-wrap:wrap;justify-content:center;align-items:start;gap:.5rem 1rem;padding-bottom:1.25rem;display:flex}.gl-learn-chunk{justify-items:center;gap:.125rem;display:inline-grid}.gl-learn-chunk>span{color:var(--gl-ink);font-size:var(--gl-zh-stage);line-height:1.4}.gl-learn-chunk small{color:var(--gl-ink-muted);letter-spacing:.04em;font-size:.8125rem;font-weight:700}.gl-learn-chunk.is-marker>span{color:var(--gl-primary);font-weight:700}.gl-learn-chunk.is-marker small{color:var(--gl-primary)}.gl-chunk-reserve,.gl-chunk-measure{display:grid}.gl-chunk-reserve>*,.gl-chunk-measure>*{grid-area:1/1;min-width:0}.gl-chunk-reserve{width:100%}.gl-chunk-measure{visibility:hidden;pointer-events:none}.gl-chunk-live{z-index:1}.gl-chunk-reading .gl-sentence__target{clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.gl-scene{max-width:36rem;color:var(--gl-ink-soft);text-align:left;align-items:flex-start;gap:.5rem;font-size:1.0625rem;line-height:1.8;display:flex}.gl-scene svg{color:var(--gl-primary);flex:none;margin-top:.4rem}.gl-prediction-choices{grid-template-columns:repeat(auto-fit,minmax(min(100%,15rem),1fr));gap:.75rem;width:100%;max-width:44rem;display:grid}.gl-prediction-choices button{border:1px solid var(--gl-border-strong);background:var(--gl-surface);color:var(--gl-ink);text-align:left;border-radius:1rem;align-items:center;gap:.75rem;padding:1rem 1.125rem;font-size:clamp(1.375rem,2.2vw,1.75rem);font-weight:600;line-height:1.5;transition:border-color .15s,background-color .15s;display:flex}.gl-prediction-choices button:hover{border-color:var(--gl-primary)}.gl-prediction-choices button[aria-pressed=true]{border-color:var(--gl-primary);background:var(--gl-primary-soft)}.gl-choice-index{background:var(--gl-surface-sunk);width:1.75rem;height:1.75rem;color:var(--gl-ink-muted);border-radius:50%;flex:none;place-items:center;font-size:.8125rem;font-weight:800;display:inline-grid}.gl-prediction-choices button[aria-pressed=true] .gl-choice-index{background:var(--gl-primary);color:var(--gl-surface)}.gl-prediction-feedback{text-align:left;width:100%;max-width:44rem}.gl-prediction-feedback p{color:var(--gl-ink-muted);align-items:flex-start;gap:.75rem;font-size:1.0625rem;line-height:1.8;display:flex}.gl-prediction-feedback [data-active=true] p:only-child:not(:has(.gl-choice-index)){justify-content:center}.gl-prediction-feedback[data-answered=true] p{color:var(--gl-ink)}.gl-prediction-feedback p .gl-choice-index{background:var(--gl-primary);color:var(--gl-surface);margin-top:.2rem}.gl-learn-noscript{padding:1rem}.gl-lesson--learn .gl-lesson__body>.gl-section:not(.gl-section--practice,.gl-section--cta){border-top:0;padding-top:0}.gl-lesson--learn .gl-lesson__body>.gl-section{margin-top:clamp(3rem,7vw,4.5rem)}.gl-lesson--learn .gl-lesson__body>.gl-section:first-child{margin-top:clamp(2.25rem,5vw,3rem)}.gl-lesson--learn .gl-section--practice{border-top:1px solid var(--gl-border)}.gl-lesson--learn .gl-section--cta{background:var(--gl-surface)}.gl-lesson--learn .gl-section__heading{align-items:baseline;gap:.75rem;margin-bottom:.75rem;display:flex}.gl-lesson--learn .gl-section__kicker{margin:0}.gl-lesson--learn .gl-section__step{width:auto;height:auto;color:var(--gl-primary);font-variant-numeric:tabular-nums;background:0 0;border-radius:0;font-size:1rem;font-weight:800}.gl-lesson--learn .gl-section__title{font-size:var(--gl-text-h2);letter-spacing:-.01em}.gl-section-lead{color:var(--gl-ink-soft);margin-bottom:1rem;font-size:1.0625rem;line-height:1.85}.gl-lesson--learn [id]{scroll-margin-top:6rem}.gl-lesson--learn :is(button,a):focus-visible{outline:3px solid var(--gl-primary);outline-offset:4px}.gl-lesson--learn :is(.gl-lesson__title,.gl-section__title,.gl-pair__title,.gl-trap__title,.gl-recap-sheet__takeaway){word-break:auto-phrase}.gl-rule-cards,.gl-pairs,.gl-traps,.gl-usage-cards{display:grid}.gl-rule-card,.gl-pair,.gl-trap,.gl-usage-card{border-top:var(--gl-rule);min-width:0;padding-block:1.5rem}.gl-rule-cards>:first-child,.gl-pairs>:first-child,.gl-traps>:first-child{border-top:0;padding-top:.5rem}.gl-formula{color:var(--gl-ink);flex-wrap:wrap;align-items:baseline;gap:.375rem .625rem;font-size:1.125rem;font-weight:700;line-height:1.6;display:flex}.gl-formula__slot{align-items:baseline;gap:.125rem;display:inline-flex}.gl-formula__slot.gl-role-marker{color:var(--gl-primary)}.gl-formula__zh{font-size:1.3em;line-height:1.2}.gl-formula__plus,.gl-formula__or{color:var(--gl-ink-faint);font-weight:400}.gl-rule-card__title{margin-top:.875rem;font-size:1.0625rem;font-weight:700;line-height:1.6}.gl-rule-card>.gl-rule-card__title:first-child{margin-top:0}.gl-rule-card__body{color:var(--gl-ink-soft);margin-top:.25rem;font-size:1rem;line-height:1.85}.gl-pair__head{flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:.25rem 1rem;display:flex}.gl-pair__title{font-size:1.125rem;font-weight:700;line-height:1.6}.gl-pair__kind{color:var(--gl-ink-faint);font-size:.8125rem}.gl-pair__items{margin:0;padding:0;list-style:none;display:grid}.gl-pair__item{align-content:start;gap:.25rem;min-width:0;padding-block:1rem;display:grid}.gl-pair__item+.gl-pair__item{border-top:1px dashed var(--gl-border)}.gl-pair__mark{color:var(--gl-ink-faint);letter-spacing:.06em;font-size:.8125rem;font-weight:800}.gl-pair__translation{color:var(--gl-ink-soft);margin-top:.375rem;font-size:1rem;line-height:1.75}.gl-pair__note{color:var(--gl-ink-muted);font-size:.875rem;line-height:1.7}.gl-pair__takeaway{color:var(--gl-ink);align-items:flex-start;gap:.5rem;font-size:1.0625rem;font-weight:600;line-height:1.8;display:flex}.gl-pair__takeaway svg{color:var(--gl-primary);flex:none;margin-top:.4rem}@media (min-width:40rem){.gl-pair__items{grid-auto-columns:minmax(0,1fr);grid-auto-flow:column;column-gap:2rem}.gl-pair__item+.gl-pair__item{border-top:0}}.gl-chunk-marker{color:var(--gl-primary);font-weight:700}.gl-chunk-marker .gl-mark{color:inherit;font-weight:inherit;background:0 0;padding:0;text-decoration:none}.gl-trap__title{font-size:1.125rem;font-weight:700;line-height:1.6}.gl-trap__body{color:var(--gl-ink-soft);margin-top:.25rem;font-size:1rem;line-height:1.85}.gl-trap__pair{gap:1rem 2rem;margin-top:1rem;display:grid}.gl-trap__case{gap:.75rem;min-width:0;display:flex}.gl-trap__icon{background:var(--gl-ink-muted);width:1.75rem;height:1.75rem;color:var(--gl-surface);border-radius:50%;flex:none;place-items:center;margin-top:.125rem;font-size:.8125rem;font-weight:800;display:grid}.gl-trap__case--wrong .gl-trap__icon{background:color-mix(in srgb,var(--gl-role-result)85%,black);color:#fff}.gl-trap__case--right .gl-trap__icon{background:color-mix(in srgb,var(--gl-role-action)80%,black);color:#fff}.gl-trap__case--a .gl-trap__icon{background:var(--gl-concept-a)}.gl-trap__case--b .gl-trap__icon{background:var(--gl-concept-b)}.gl-trap__content{min-width:0}.gl-trap__label{color:var(--gl-ink-muted);font-size:.8125rem;font-weight:700}.gl-trap__text{color:var(--gl-ink);overflow-wrap:anywhere;margin-top:.125rem;font-size:clamp(1.25rem,2vw,1.5rem);font-weight:600;line-height:1.5}.gl-trap__case--wrong .gl-trap__text{color:var(--gl-ink-soft)}.gl-trap__why{color:var(--gl-ink-soft);margin-top:.25rem;font-size:.9375rem;line-height:1.75}@media (min-width:40rem){.gl-trap__pair{grid-template-columns:repeat(2,minmax(0,1fr))}}.gl-practice .gl-deck__head{border-bottom:var(--gl-rule);padding-bottom:.875rem}.gl-practice .gl-deck__slide{padding-top:1.5rem}.gl-lesson--learn .gl-question__situation{color:var(--gl-ink-soft);margin:0 0 .25rem;font-size:1rem;line-height:1.8}.gl-lesson--learn .gl-question__prompt{margin:0;font-size:clamp(1.25rem,2.4vw,1.5rem);font-weight:700;line-height:1.6}.gl-lesson--learn .gl-choices{grid-template-columns:repeat(auto-fit,minmax(min(100%,15rem),1fr));margin-top:1.25rem}.gl-lesson--learn .gl-choice__tag{white-space:nowrap;flex:none;font-size:.8125rem}.gl-lesson--learn .gl-choice{border-color:var(--gl-border-strong);border-radius:1rem;min-height:3.25rem;padding:.75rem 1rem}.gl-lesson--learn .gl-choice__text{font-size:1.375rem}.gl-lesson--learn .gl-order__slots{border-color:var(--gl-border-strong);border-radius:1rem;min-height:3.5rem;margin-top:1.25rem;padding:.5rem .75rem}.gl-lesson--learn .gl-order__pool{margin-top:.875rem}.gl-lesson--learn .gl-order__chunk{border-color:var(--gl-border-strong);border-radius:.75rem;padding:.5rem .875rem;font-size:1.375rem}.gl-lesson--learn .gl-order__actions{margin-top:1.25rem}.gl-lesson--learn .gl-feedback{border:0;border-top:1px dashed var(--gl-border-strong);background:0 0;border-radius:0;margin-top:1.25rem;padding:1.25rem 0 0}.gl-lesson--learn .gl-feedback__body{color:var(--gl-ink-soft);font-size:1rem}.gl-lesson--learn .gl-feedback__answer-label{font-size:.8125rem}.gl-lesson--learn .gl-checkpoints{font-size:1rem}.gl-lesson--learn .gl-question>.gl-button{margin-top:1.25rem}.gl-practice-bridge .gl-button{white-space:normal;text-align:center}.gl-practice-bridge.is-after-practice{border-top:var(--gl-rule);margin-top:1.5rem;padding-top:1.5rem}.gl-examples__deck .gl-deck__slide{padding-top:1rem}.gl-example-card{background:var(--gl-surface);text-align:center;border-radius:1.5rem;align-content:center;justify-items:center;gap:.375rem;height:100%;padding:clamp(1.75rem,4vw,2.5rem) 1.25rem;display:grid}.gl-example-card .gl-sentence{align-items:center}.gl-example-card .gl-sentence__target{font-size:clamp(1.625rem,3.2vw,2.25rem);line-height:1.5}.gl-example-card .gl-sentence :is(.gl-sentence__zhuyin,.gl-sentence__pinyin){font-size:.9375rem}.gl-example-card__form{color:var(--gl-concept,var(--gl-ink-muted));font-size:.9375rem;font-weight:800}.gl-example-card__translation{color:var(--gl-ink);margin-top:.5rem;font-size:1.0625rem;line-height:1.8}.gl-example-card__note{max-width:32rem;color:var(--gl-ink-muted);font-size:.9375rem;line-height:1.75}.gl-example-card__actions{gap:.5rem;margin-top:1rem;display:flex}.gl-lesson--learn .gl-examples__filters{margin-bottom:1rem}.gl-recap-sheet{background:var(--gl-surface);border-radius:1.5rem;gap:1.5rem;padding:clamp(1.25rem,3vw,2rem);display:grid}.gl-recap-sheet__takeaway{text-wrap:pretty;font-size:clamp(1.25rem,2.2vw,1.5rem);font-weight:700;line-height:1.6}.gl-recap-sheet .gl-learn-diagram{align-items:stretch;max-width:none}.gl-recap-variants{display:grid}.gl-recap-variants>div{border-top:var(--gl-rule);min-width:0;padding-block:1.125rem}.gl-recap-sheet .gl-chunk-track{justify-content:flex-start;padding-bottom:.5rem}.gl-recap-sheet .gl-learn-chunk>span{font-size:clamp(1.375rem,2.4vw,1.75rem)}.gl-recap-sheet .gl-learn-example .gl-sentence{align-items:flex-start}.gl-recap-sheet .gl-learn-example__translation{font-size:1rem}.gl-recap-sheet .gl-learn-reason{max-width:none;color:var(--gl-ink-soft);margin-top:.5rem;font-size:.9375rem;font-weight:400}.gl-recap-rule{border-top:var(--gl-rule);color:var(--gl-ink-soft);gap:.5rem;padding-top:1.25rem;font-size:1rem;line-height:1.85;display:grid}.gl-recap-rule h3{color:var(--gl-ink);font-weight:700}.gl-usage-card__title{align-items:center;gap:.5rem;font-size:1.0625rem;font-weight:700;line-height:1.6;display:flex}.gl-usage-card__title svg{color:var(--gl-primary);flex:none}.gl-usage-card__body{color:var(--gl-ink-soft);margin-top:.375rem;font-size:1rem;line-height:1.85}@media (min-width:40rem){.gl-usage-cards{grid-template-columns:repeat(2,minmax(0,1fr));column-gap:2rem}.gl-usage-cards>:nth-child(-n+2){border-top:0;padding-top:.5rem}}@media (max-width:39.99rem){.gl-usage-cards>:first-child{border-top:0;padding-top:.5rem}}.gl-lesson--learn .gl-related__list{gap:0 2rem}.gl-lesson--learn .gl-related__card{border:0;border-top:var(--gl-rule);background:0 0;border-radius:0;padding:1rem 0 1.25rem}.gl-lesson--learn a.gl-related__card:hover .gl-related__card-title{color:var(--gl-primary)}.gl-lesson--learn .gl-related__card--upcoming :is(.gl-related__card-title,.gl-related__card-body){color:var(--gl-ink-muted)}.gl-lesson--learn .gl-related__card-body{-webkit-line-clamp:3;-webkit-box-orient:vertical;display:-webkit-box;overflow:hidden}.gl-lesson-image{align-items:center;width:100%;display:grid;position:relative}.gl-lesson-image img{object-fit:contain;width:100%;height:100%;position:absolute}.gl-lesson-image p{place-items:center;padding:1rem;display:grid;position:absolute;inset:0}.gl-learn-outline{gap:1rem;margin-top:1.5rem;display:grid}.gl-learn-outline a{color:var(--gl-ink-soft);align-items:center;gap:.75rem;font-size:1rem;display:flex}.gl-learn-outline a:hover{color:var(--gl-primary)}.gl-learn-outline span{color:var(--gl-primary);font-variant-numeric:tabular-nums;font-size:.875rem}.gl-lesson--learn .gl-rail__title{letter-spacing:.04em;font-size:.875rem}.gl-lesson--learn .gl-rail__note{font-size:1rem;line-height:1.85}@media (min-width:64rem){.gl-lesson--learn .gl-lesson__body,.gl-lesson--learn .gl-lesson__rail{grid-row:3}}@media (max-width:48rem){.gl-deck__steps{gap:1rem}.gl-deck__steps button+button:before{width:.75rem;right:calc(100% + .125rem)}.gl-deck__steps button:not([aria-pressed=true]){padding-right:.375rem}.gl-deck__steps button:not([aria-pressed=true]) .gl-deck__step-label{clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.gl-deck--side .gl-deck__head{padding:1rem .5rem 0}.gl-stage .gl-deck__slide{gap:1.25rem;padding-inline:1rem}.gl-learn-switch{border-radius:1rem;grid-auto-columns:minmax(0,1fr);grid-auto-flow:column;width:100%;margin-bottom:1.25rem;display:grid}.gl-learn-switch button{word-break:auto-phrase;border-radius:.75rem;padding-inline:.5rem;font-size:.9375rem;line-height:1.4}.gl-overview__sentence{gap:.375rem .875rem}.gl-chunk-track{gap:.375rem .75rem}.gl-overview__meaning{max-width:10em}.gl-learn-reason{margin-top:1rem}}@media (max-width:30rem){.gl-lesson--learn .gl-section--stage{padding:0}.gl-lesson--learn .gl-section--patterns,.gl-lesson--learn .gl-section:not(.gl-section--stage,.gl-section--practice,.gl-section--cta){padding-inline:0}.gl-learn-chunk>span{font-size:1.75rem}}@media (prefers-reduced-motion:reduce){.gl-lesson--learn *,.gl-lesson--learn :before,.gl-lesson--learn :after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}