.docs-page{--docs-teal:var(--accent);--docs-highlight:#ebe6f5;min-width:0;max-width:100%}@media (width<=767px){.docs-page--study .docs-article,.docs-page .docs-article{overflow-wrap:break-word;hyphens:auto;min-width:0;max-width:100%;padding-right:.125rem}.docs-page .docs-article h2{padding-right:.35rem}.docs-page .docs-article ul,.docs-page .docs-article ol{padding-right:.5rem}.docs-page .docs-article table{-webkit-overflow-scrolling:touch;max-width:100%;display:block;overflow-x:auto}}.docs-hero-kicker{font-family:var(--font-ui);letter-spacing:.08em;text-transform:uppercase;color:var(--docs-teal);margin:0 0 .5rem;font-size:.6875rem;font-weight:700}.docs-page--skill-lesson .voc-module__hero,.docs-page--learn-module .voc-module__hero{display:none}.docs-page--skill-lesson .voc-module,.docs-page--learn-module .voc-module{--lesson-r:var(--radius-ui);--lesson-border-soft:var(--border-soft)}.docs-page--skill-lesson .listen-audio,.docs-page--skill-lesson .voc-option,.docs-page--skill-lesson .voc-passage,.docs-page--skill-lesson .voc-activity,.docs-page--skill-lesson .voc-word-card,.docs-page--learn-module .voc-option,.docs-page--learn-module .voc-passage,.docs-page--learn-module .voc-activity,.docs-page--learn-module .voc-word-card{border-color:var(--lesson-border-soft)}.docs-page--skill-lesson .voc-module .voc-passage,.docs-page--learn-module .voc-module .voc-passage,.docs-page--skill-lesson .voc-module .voc-word-card,.docs-page--learn-module .voc-module .voc-word-card,.docs-page--skill-lesson .listen-audio,.docs-page--skill-lesson .voc-module .listen-audio--in-activity{border-radius:var(--lesson-r)}.docs-page--skill-lesson .voc-module .voc-activity,.docs-page--learn-module .voc-module .voc-activity{box-shadow:none;background:0 0;border:none;border-radius:0;padding:.5rem 0 1rem}.docs-page--skill-lesson .voc-module .voc-option,.docs-page--learn-module .voc-module .voc-option{border:1px solid var(--lesson-border-soft);border-radius:var(--lesson-r);background:#fff}.docs-page--skill-lesson .voc-module .voc-option:has(input:checked),.docs-page--learn-module .voc-module .voc-option:has(input:checked){border-color:color-mix(in srgb, var(--accent) 40%, var(--border));background:#fff}.docs-page--skill-lesson .voc-module .voc-check-btn,.docs-page--learn-module .voc-module .voc-check-btn{border-radius:var(--lesson-r)}.docs-page--learn-module .voc-module .voc-combine-row__input textarea{border-radius:var(--lesson-r);border-color:var(--lesson-border-soft)}.docs-lesson-intro{margin:0 0 1.25rem}.docs-lesson-intro__title{font-family:var(--font-ui);letter-spacing:-.03em;color:rgb(var(--black));margin:0;font-size:clamp(1.45rem,4.2vw,2rem);font-weight:800;line-height:1.15}.docs-lesson-intro__level{border-radius:var(--radius-ui);border:1px solid var(--border-soft);font-family:var(--font-ui);letter-spacing:.04em;color:var(--accent-dark);background:color-mix(in srgb, var(--accent-muted) 85%, #fff);margin:.5rem 0 0;padding:.2rem .55rem;font-size:.75rem;font-weight:700;display:inline-block}@media (width<=767px){.docs-page--skill-lesson .docs-lesson-intro,.docs-page--learn-module .docs-lesson-intro{margin-bottom:1.75rem}.docs-page--skill-lesson .docs-hero-kicker,.docs-page--learn-module .docs-hero-kicker{margin-bottom:.4rem}.docs-page--skill-lesson .docs-lesson-intro__title,.docs-page--learn-module .docs-lesson-intro__title{font-size:1.375rem}.docs-page--skill-lesson .docs-lesson-intro__level,.docs-page--learn-module .docs-lesson-intro__level{border-radius:var(--radius-ui)}}.docs-hero{margin-bottom:2rem}.docs-hero h1{font-family:var(--font-serif);color:rgb(var(--black));letter-spacing:-.02em;margin:0 0 .75rem;font-size:clamp(1.875rem,4vw,2.375rem);font-weight:700;line-height:1.2}.docs-subtitle{font-family:var(--font-ui);color:rgb(var(--gray));max-width:40rem;margin:0 0 1.25rem;font-size:1.0625rem;font-weight:400;line-height:1.6}.docs-hero-rule{background:var(--docs-teal);opacity:.95;border:none;border-radius:2px;max-width:100%;height:3px;margin:0}.docs-grid{grid-template-columns:1fr;align-items:start;gap:2.5rem 3rem;display:grid}@media (width>=1024px){.docs-grid{grid-template-columns:minmax(0,1fr) minmax(240px,280px)}}.docs-grid--ielts-about{grid-template-columns:1fr}@media (width>=1024px){.docs-grid--ielts-about{grid-template-columns:minmax(200px,220px) minmax(0,1fr) minmax(220px,260px)}}.ielts-about-nav-mobile{-webkit-overflow-scrolling:touch;margin-bottom:1.5rem;overflow-x:auto}@media (width>=1024px){.ielts-about-nav-mobile{display:none}}.ielts-about-nav-desktop{display:none}@media (width>=1024px){.ielts-about-nav-desktop{display:block;position:sticky;top:5.5rem}.ielts-about-nav-desktop--scroll{max-height:calc(100dvh - 6.5rem);overflow-y:auto}}.ielts-about-nav__label{font-family:var(--font-ui);letter-spacing:.08em;text-transform:uppercase;color:rgb(var(--gray));margin:0 0 .65rem;font-size:.6875rem;font-weight:700}.ielts-about-nav__list{flex-direction:row;gap:.35rem;margin:0;padding:0;list-style:none;display:flex}@media (width>=1024px){.ielts-about-nav__list{flex-direction:column;gap:.15rem}}.ielts-about-nav__link{white-space:nowrap;font-family:var(--font-ui);color:rgb(var(--gray-dark));border:1px solid #0000;border-radius:6px;padding:.5rem .85rem;font-size:.875rem;font-weight:500;text-decoration:none;display:block}.ielts-about-nav__link:hover{background:rgb(var(--gray-light) / .45);color:rgb(var(--black))}.ielts-about-nav__link--active{background:rgb(var(--accent) / .1);color:var(--docs-teal);border-color:rgb(var(--accent) / .25);font-weight:600}.docs-article{font-family:var(--font-serif);color:rgb(var(--gray-dark));font-size:1.0625rem;line-height:1.75}.docs-article h2,.docs-article h3{scroll-margin-top:5.5rem}.docs-article h2{font-family:var(--font-ui);color:rgb(var(--black));border-left:4px solid var(--docs-teal);letter-spacing:.01em;margin:2.25rem 0 1rem;padding-left:.85rem;font-size:1.0625rem;font-weight:700;line-height:1.35}.docs-article h3{font-family:var(--font-ui);color:rgb(var(--black));margin:1.75rem 0 .65rem;font-size:1rem;font-weight:600}.docs-article p{margin-bottom:1.15em}.docs-article .term-highlight{background:var(--docs-highlight);color:rgb(var(--black));-webkit-box-decoration-break:clone;box-decoration-break:clone;border-radius:4px;padding:.1em .35em;font-weight:600}.docs-article blockquote{border-left:4px solid var(--docs-teal);background:rgb(var(--gray-light) / .35);font-size:.98rem;font-family:var(--font-ui);border-radius:0 6px 6px 0;margin:1.25rem 0;padding:.75rem 1rem}.docs-article ul,.docs-article ol{margin:.65rem 0 1.1rem;padding-left:1.35rem}.docs-article li{margin-bottom:.5rem}.docs-article li::marker{color:rgb(var(--gray))}.docs-article table{font-family:var(--font-ui);font-size:.875rem}.docs-article a{color:var(--docs-teal);font-weight:500}.docs-article a:hover{color:var(--accent-dark);text-decoration:underline}.docs-sidebar-label{font-family:var(--font-ui);letter-spacing:.08em;text-transform:uppercase;color:rgb(var(--gray));margin:0 0 .75rem;font-size:.6875rem;font-weight:700}.docs-sidebar-label--spaced{margin-top:2rem}.docs-sidebar-cards{flex-direction:column;gap:.75rem;margin:0;padding:0;list-style:none;display:flex}.docs-sidebar-card{border:1px solid rgb(var(--gray-light));box-shadow:0 1px 2px rgba(var(--gray), .12);color:inherit;background:#fff;border-radius:8px;gap:.75rem;padding:.875rem;text-decoration:none;transition:border-color .15s,box-shadow .15s;display:flex}.docs-sidebar-card:hover{border-color:rgb(var(--gray));box-shadow:0 4px 12px rgba(var(--gray), .15)}.docs-sidebar-card-icon{background:rgb(var(--gray-light) / .6);width:2.5rem;height:3rem;color:var(--docs-teal);border-radius:4px;flex-shrink:0;justify-content:center;align-items:center;display:flex}.docs-sidebar-card-icon svg{width:1.35rem;height:1.35rem}.docs-sidebar-card-body{flex-direction:column;gap:.15rem;min-width:0;display:flex}.docs-sidebar-card-title{font-family:var(--font-ui);color:rgb(var(--black));font-size:.875rem;font-weight:700;line-height:1.3}.docs-sidebar-card-meta{font-family:var(--font-ui);color:rgb(var(--gray));font-size:.75rem}.docs-sidebar-card-cta{font-family:var(--font-ui);color:var(--docs-teal);align-items:center;gap:.25rem;margin-top:.35rem;font-size:.75rem;font-weight:600;display:inline-flex}.docs-sidebar-card-cta svg{width:.875rem;height:.875rem}.docs-sidebar-links{flex-direction:column;gap:.5rem;margin:0;padding:0;list-style:none;display:flex}.docs-sidebar-links a{font-family:var(--font-ui);color:var(--docs-teal);font-size:.875rem;font-weight:500;text-decoration:none}.docs-sidebar-links a:hover{text-decoration:underline}.docs-sidebar-affiliate-cards{flex-direction:column;gap:.65rem;margin:0;padding:0;list-style:none;display:flex}.docs-sidebar-affiliate-card{border:1px solid rgb(var(--gray-light));color:inherit;background:#fff;border-radius:10px;align-items:flex-start;gap:.75rem;padding:.65rem .75rem;text-decoration:none;transition:border-color .15s,box-shadow .15s;display:flex}.docs-sidebar-affiliate-card:hover{border-color:color-mix(in srgb, var(--docs-teal) 45%, rgb(var(--gray-light)));box-shadow:0 2px 8px rgba(var(--gray), .12)}.docs-sidebar-affiliate-cover{object-fit:contain;background:#f8fafc;border-radius:4px;flex-shrink:0;width:56px;height:auto;max-height:84px;box-shadow:0 1px 3px #0000001f}.docs-sidebar-affiliate-card-body{flex-direction:column;gap:.2rem;min-width:0;display:flex}.docs-sidebar-affiliate-title{font-family:var(--font-ui);color:rgb(var(--black));font-size:.8125rem;font-weight:600;line-height:1.35}.docs-sidebar-affiliate-card:hover .docs-sidebar-affiliate-title{color:var(--docs-teal)}.docs-sidebar-affiliate-note{font-family:var(--font-ui);color:rgb(var(--gray));font-size:.75rem;line-height:1.35}.docs-sidebar-affiliate-cta{font-family:var(--font-ui);color:var(--docs-teal);align-items:center;gap:.25rem;margin-top:.15rem;font-size:.75rem;font-weight:600;display:inline-flex}.docs-sidebar-affiliate-cta svg{width:.85rem;height:.85rem}.docs-sidebar-disclosure{font-family:var(--font-ui);color:rgb(var(--gray));margin:.65rem 0 0;font-size:.6875rem;line-height:1.45}@media (width>=1024px){.docs-sidebar{position:sticky;top:5.5rem}}