/* The six learning sections share one editorial library; every cover and title opens its article. */
.etop-public-shell.etop-reading-shell.elm-shell{display:block;grid-template-columns:none;grid-template-areas:none;max-width:1160px;margin-top:22px;margin-bottom:45px}
.elm-shell>.etop-reading-content{background:#fff;border:1px solid #dce5ee;border-radius:18px;box-shadow:0 8px 28px #22466408;overflow:hidden;container:etop-content / inline-size}
.elm-shell .elm-section-nav{padding:22px 32px 21px;border-bottom:1px solid #e2e9f0;background:#f8fafc}
.elm-section-caption{display:flex;align-items:center;gap:15px;margin-bottom:13px;color:#62798b;font:700 11px/1.5 Arial,sans-serif;letter-spacing:1.25px}
.elm-section-caption-line{flex:1;height:1px;background:#e1e8ef}
.elm-section-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px 10px}
.elm-section-links .elm-section-link{display:flex;align-items:center;gap:10px;min-height:44px;padding:10px 13px;border:1px solid #dce5ed;border-radius:9px;background:#fff;color:#3b566d;font:600 14px/1.45 Arial,sans-serif;transition:border-color .15s,background .15s}
.elm-section-link>i{flex:none;width:19px;color:#7592a6;font-size:17px;text-align:center}
.elm-section-links .elm-section-link[aria-current]{border-color:#8fb3d5;background:#e9f3fd;color:#0f5fa3;box-shadow:inset 3px 0 #1769ad}
.elm-section-link[aria-current]>i{color:#1769ad}
.elm-shell .etop-reading-content>.elm-catalog{margin:0;padding:26px 40px 32px;border:0;border-radius:0;background:#fff;box-shadow:none;overflow:visible}
.elm-catalog *{box-sizing:border-box}
.elm-filter-form{margin:0 0 15px}
.elm-search-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px;align-items:center;margin:0 0 27px}
.elm-query{position:relative;min-width:0}
.elm-query>i{position:absolute;left:15px;top:16px;color:#7a91a3;font-size:14px;pointer-events:none}
.elm-query input{display:block;width:100%;min-width:0;height:46px;padding:11px 14px 11px 40px;border:1px solid #c8d9e6;border-radius:10px;background:#f9fbfd;color:#23455f;font:14px/1.5 Arial,sans-serif}
.elm-query input::placeholder{color:#70889b}
.elm-catalog .elm-search-button{display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:46px;padding:10px 18px;border:1px solid var(--elt-accent);border-radius:10px;background:var(--elt-accent);color:#fff;font:600 13px/1.5 Arial,sans-serif;text-decoration:none}
.elm-heading{margin:0 0 22px}
.elm-catalog .elm-heading h1{padding:0;margin:0 0 8px;color:#193c55;font:700 30px/1.3 Arial,sans-serif;letter-spacing:-.65px;text-align:left!important}
.elm-heading p{max-width:780px;padding:0;margin:0;color:#627b8c;font:14px/1.75 Arial,sans-serif}
.elm-filter-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px 20px}
.elm-filter-row>label{display:flex;align-items:center;gap:10px;margin:0;min-width:0;color:#5b7487;font:13px/1.5 Arial,sans-serif}
.elm-topic-field{flex:1}
.elm-topic-field>span,.elm-sort-field>span{flex:none}
.elm-filter-row select{display:block;min-width:0;height:43px;max-width:100%;padding:9px 30px 9px 12px;border:1px solid #cbdbe7;border-radius:9px;background:#fff;color:#294c65;font:13px/1.5 Arial,sans-serif}
.elm-topic-field select{flex:1;max-width:380px}
.elm-sort-field select{width:158px}
.elm-catalog .elm-reset{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:39px;padding:7px 10px;border:1px solid #d7e3eb;border-radius:8px;background:#f6f9fb;color:#47667e;font-size:12px;white-space:nowrap}
.elm-result-line{padding:0 0 15px}
.elm-result{display:flex;flex-wrap:wrap;align-items:center;gap:7px 10px;margin:0;color:#657e90;font:12px/1.7 Arial,sans-serif}
.elm-result strong{color:var(--elt-accent);font-weight:600}
.elm-range{margin-left:auto;color:#778d9d}
.elm-lessons{border-top:1px solid #dde7ef}
.elm-lessons .elm-lesson{display:grid;grid-template-columns:240px minmax(0,1fr);align-items:center;gap:28px;padding:24px 0;margin:0;border:0;border-bottom:1px solid #e0e8ef;background:transparent;box-shadow:none;border-radius:0}
.elm-lesson-image{display:block;width:100%;min-width:0;aspect-ratio:16/9;border-radius:11px;overflow:hidden;background:#f1f5f8;box-shadow:0 3px 9px #21486512}
.elm-lesson-image img{display:block;width:100%;height:100%;object-fit:contain;object-position:center;border:0;border-radius:0;padding:0;margin:0;box-shadow:none}
.elm-lesson-body{display:flex;flex-direction:column;gap:9px;min-width:0;padding:0;margin:0;text-align:left}
.elm-lesson-meta{display:flex;align-items:center;flex-wrap:wrap;gap:7px 10px;padding:0;margin:0;color:var(--elt-accent);font:600 12px/1.5 Arial,sans-serif}
.elm-lesson-number{border-left:1px solid var(--elt-edge);padding-left:10px;font-weight:400;color:#6d8595}
.elm-catalog .elm-lesson-title{display:block;width:100%;padding:0;margin:0;color:#1e4058;font:700 21px/1.4 Arial,sans-serif;letter-spacing:-.25px;text-align:left!important;overflow-wrap:break-word}
.elm-catalog .elm-lesson-title a{color:inherit;text-decoration:none}
.elm-lesson-title .etop-title-text{display:block;max-width:100%;text-wrap:pretty;overflow-wrap:break-word;word-break:normal}
.elm-catalog .elm-lesson-summary{padding:0;margin:0;color:#5b7487;font:14px/1.75 Arial,sans-serif;text-align:left}
.elm-lesson-footer{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:1px}
.elm-lesson-footer time{display:block;flex:none;color:#748a9b;font:12px/1.5 Arial,sans-serif}
.elm-lesson-footer .elm-lesson-open{display:inline-flex;align-items:center;gap:9px;min-height:30px;padding:3px 0;color:var(--elt-accent);font:600 13px/1.5 Arial,sans-serif;white-space:nowrap}
.elm-lesson-open>.fa-arrow-up-right{display:none}
.elm-open-arrow{font-size:16px;font-weight:400}
.elm-catalog .elm-paging{display:flex;justify-content:center;flex-wrap:wrap;gap:7px;margin:26px 0 0!important;padding:0}
.elm-paging:empty{display:none}
.elm-paging :is(a,strong){display:inline-flex;align-items:center;justify-content:center;min-width:38px;min-height:38px;padding:7px 12px;border:1px solid #d7e3ec;border-radius:9px;background:#fff;color:var(--elt-accent);font:13px/1.5 Arial,sans-serif}
.elm-paging strong{background:var(--elt-accent);border-color:var(--elt-accent);color:#fff}
.elm-empty{padding:42px 20px 35px;border-top:1px solid #dde7ef;text-align:center}
.elm-empty>i{font-size:27px;color:#85a1b5;margin-bottom:15px}
.elm-catalog .elm-empty h2{margin:0 0 10px;padding:0;color:#294c65;font:700 22px/1.4 Arial,sans-serif;text-align:center!important}
.elm-empty p{margin:0 0 21px;color:#657e90;font:14px/1.7 Arial,sans-serif}
/* The article remains a single readable column with the same section navigation. */
.elm-shell .etop-reading-content>.etop-article-detail{width:100%;max-width:940px;margin:0 auto;border:0;border-radius:0;background:#fff;box-shadow:none;padding-top:12px}
.elm-shell .etop-article-detail .post-entry{max-width:850px;margin-inline:auto}
.elm-shell .etop-article-detail .elt-article-path{max-width:850px;margin-inline:auto}
.elm-shell .etop-article-detail .elt-article-path--compact{margin-inline:24px}
@media(hover:hover){.elm-section-links .elm-section-link:hover{border-color:#91b2cf;background:#f0f6fc;color:#115b99}.elm-catalog .elm-lesson-title a:hover,.elm-lesson-open:hover{text-decoration:underline;text-underline-offset:4px}.elm-lesson-image:hover{box-shadow:0 5px 14px #21486524}.elm-catalog .elm-search-button:hover{filter:brightness(.95)}}
.elm-shell :is(a,button,input,select):focus-visible{outline:3px solid #dc991f;outline-offset:3px}
@media(max-width:900px){.elm-shell .elm-section-nav{padding:20px 25px}.elm-shell .etop-reading-content>.elm-catalog{padding:24px 28px 30px}.elm-lessons .elm-lesson{grid-template-columns:200px minmax(0,1fr);gap:22px;padding-block:22px}.elm-catalog .elm-lesson-title{font-size:20px}.elm-filter-row{gap:12px 15px}.elm-topic-field select{max-width:320px}}
@media(max-width:640px){.etop-public-shell.etop-reading-shell.elm-shell{margin-top:12px;padding:0 10px}.elm-shell>.etop-reading-content{border-radius:13px}.elm-shell .elm-section-nav{padding:16px 14px}.elm-section-caption{font-size:10px;letter-spacing:1px;margin-bottom:10px}.elm-section-links{grid-template-columns:repeat(2,minmax(0,1fr));gap:7px}.elm-section-links .elm-section-link{gap:7px;padding:9px;min-height:44px;font-size:12px;border-radius:8px}.elm-section-link>i{font-size:15px;width:16px}.elm-shell .etop-reading-content>.elm-catalog{padding:20px 16px 26px}.elm-search-row{gap:8px;margin-bottom:22px}.elm-query input{height:45px;font-size:16px;padding-left:34px}.elm-query>i{left:12px;top:16px;font-size:13px}.elm-catalog .elm-search-button{padding:10px 13px;min-height:45px;font-size:12px}.elm-search-button>i{display:none}.elm-catalog .elm-heading h1{font-size:26px;letter-spacing:-.45px;margin-bottom:0}.elm-heading p{display:none}.elm-heading{margin-bottom:19px}.elm-filter-row{gap:11px}.elm-filter-row>label{font-size:12px;gap:9px}.elm-topic-field{flex-basis:100%}.elm-topic-field select{max-width:none;flex:1;width:0}.elm-filter-row select{font-size:13px}.elm-sort-field select{width:160px}.elm-result{font-size:11px;gap:6px 8px}.elm-range{margin-left:0;flex-basis:100%}.elm-result-line{padding-bottom:12px}.elm-lessons .elm-lesson{grid-template-columns:124px minmax(0,1fr);gap:15px;align-items:start;padding-block:19px}.elm-lesson-image{border-radius:9px;margin-top:2px}.elm-lesson-body{gap:7px}.elm-lesson-meta{font-size:11px;line-height:1.45}.elm-catalog .elm-lesson-title{font-size:17px;line-height:1.4;letter-spacing:-.15px}.elm-catalog .elm-lesson-summary{display:none}.elm-lesson-footer{flex-wrap:wrap;gap:5px 10px}.elm-lesson-footer time{font-size:11px}.elm-lesson-footer .elm-lesson-open{font-size:12px;min-height:29px}.elm-paging :is(a,strong){min-height:38px;min-width:36px;padding:7px 10px}.elm-shell .etop-reading-content>.etop-article-detail{padding-top:4px}.elm-shell .etop-article-detail .elt-article-path{margin-inline:14px}.elm-catalog .elm-empty h2{font-size:20px}}
@media(max-width:440px){.elm-section-link>i{display:none}.elm-section-links .elm-section-link{font-size:12px;padding:9px 8px}.elm-shell .etop-reading-content>.elm-catalog{padding-inline:14px}.elm-lessons .elm-lesson{grid-template-columns:100px minmax(0,1fr);gap:12px}.elm-catalog .elm-lesson-title{font-size:16px}.elm-lesson-number{border:0;padding-left:0}.elm-lesson-meta{gap:4px 8px}.elm-search-row{gap:7px}.elm-catalog .elm-search-button{padding-inline:11px}.elm-query input{font-size:16px}.elm-catalog .elm-heading h1{font-size:24px}}
@media(pointer:coarse){.elm-section-links .elm-section-link,.elm-lesson-footer .elm-lesson-open,.elm-paging :is(a,strong),.elm-catalog .elm-reset{min-height:44px}}
@media(prefers-reduced-motion:reduce){.elm-shell *{transition:none!important}}
/* Match the article heading to the lighter library typography. */
.elm-shell .etop-reading-content .etop-article-detail>.etop-article-category{justify-content:flex-start;min-height:0;margin:17px 24px 15px;padding:0;border:0;border-radius:0;background:transparent;text-align:left}
.elm-shell .etop-reading-content .etop-article-detail>.etop-article-category .heading{color:#28688f!important;font:600 13px/1.5 Arial,sans-serif;letter-spacing:0;text-transform:none}
.elm-shell .etop-article-category .heading::before{content:'←';display:inline-block;margin-right:9px;font-weight:400}
.elm-shell .etop-reading-content .etop-article-detail>.post-header{max-width:850px;margin:0 auto 20px;text-align:left}
.elm-shell .etop-reading-content .etop-article-detail>.post-header h1{margin:0 0 16px;color:#193c55;font:700 31px/1.4 Arial,sans-serif!important;letter-spacing:-.45px!important;text-align:left;text-wrap:pretty;overflow-wrap:break-word}
.elm-shell .etop-reading-content .etop-article-byline{justify-content:flex-start;gap:7px 15px;font-size:12px}
.elm-shell .etop-reading-content .etop-article-date{font-size:12px}
.elm-shell .etop-reading-content .etop-article-rule{width:100%;height:1px;margin:18px 0 0;background:#e2e9f0}
@media(max-width:640px){.elm-shell .etop-reading-content .etop-article-detail>.etop-article-category{margin:14px 0 14px}.elm-shell .etop-reading-content .etop-article-detail>.post-header h1{font-size:25px!important;line-height:1.4!important;letter-spacing:-.3px!important}.elm-shell .etop-reading-content .etop-article-byline{gap:6px 12px}.elm-shell .etop-reading-content .etop-article-rule{margin-top:15px}}
/* Latest preference: keep the editorial controls and show the articles as an image-card grid. */
.elm-lessons{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:23px 20px;align-items:stretch;border-top:0}
.elm-lessons .elm-lesson{display:flex;flex-direction:column;align-items:stretch;gap:0;min-width:0;margin:0;padding:0;border:1px solid #dce6ee;border-radius:13px;overflow:hidden;background:#fff;box-shadow:0 3px 10px #21486507}
.elm-lesson-image{flex:none;width:100%;aspect-ratio:16/9;margin:0;border-radius:0;border-bottom:1px solid #e8eef3;box-shadow:none}
.elm-lesson-body{display:flex;flex:1;flex-direction:column;gap:9px;min-width:0;padding:17px 17px 14px}
.elm-catalog .elm-lesson-title{font-size:19px;line-height:1.45;letter-spacing:-.2px}
.elm-catalog .elm-lesson-summary{display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden;font-size:13px;line-height:1.7}
.elm-lesson-meta{gap:7px 9px;font-size:11px;line-height:1.5}
.elm-lesson-footer{flex-wrap:nowrap;gap:10px;margin-top:auto;padding-top:8px}
.elm-lesson-footer time{font-size:11px}
.elm-lesson-footer .elm-lesson-open{font-size:12px}
@media(hover:hover){.elm-lessons .elm-lesson:hover{border-color:#a9c3d8;box-shadow:0 6px 18px #21486512}.elm-lesson-image:hover{box-shadow:none}}
@media(max-width:900px){.elm-lessons{grid-template-columns:repeat(2,minmax(0,1fr));gap:21px 18px}}
@media(max-width:560px){.elm-lessons{grid-template-columns:minmax(0,1fr);gap:20px}.elm-lesson-body{padding:17px 17px 14px}.elm-catalog .elm-lesson-title{font-size:19px;line-height:1.45}.elm-catalog .elm-lesson-summary{display:-webkit-box;font-size:13px}.elm-lesson-image{margin-top:0;border-radius:0}.elm-lesson-meta{font-size:12px}.elm-lesson-footer time{font-size:12px}.elm-lesson-footer .elm-lesson-open{font-size:13px}}

/* Direct topic choices share the section navigation's quiet, separate-box language. */
.elm-heading--tools{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:start;gap:15px 24px;margin-bottom:21px}
.elm-heading-copy{min-width:0}
.elm-heading--tools .elm-heading-copy p{max-width:660px}
.elm-tools{display:flex;align-items:center;justify-content:flex-end;gap:9px;padding-top:1px;min-width:0}
.elm-tools .elm-sort-field{display:block;margin:0;min-width:0}
.elm-tools .elm-sort-field select{display:block;width:143px;max-width:100%;height:42px;padding:9px 27px 9px 12px;border:1px solid #d3e0ea;border-radius:10px;background:#fafcfe;color:#4b667a;font:13px/1.5 Arial,sans-serif}
.elm-quick-search{position:relative;flex:none;z-index:5}
.elm-quick-search>summary{display:flex;align-items:center;justify-content:center;gap:8px;min-height:42px;padding:10px 13px;border:1px solid #d3e0ea;border-radius:10px;background:#fafcfe;color:#4b667a;font:600 13px/1.5 Arial,sans-serif;cursor:pointer;list-style:none;white-space:nowrap;transition:background .18s,border-color .18s}
.elm-quick-search>summary::-webkit-details-marker{display:none}
.elm-quick-search>summary::marker{content:''}
.elm-quick-search[open]>summary{color:var(--elt-accent);border-color:var(--elt-accent);background:var(--elt-soft)}
.elm-search-active{width:6px;height:6px;border-radius:50%;background:var(--elt-accent)}
.elm-search-panel{position:absolute;right:0;top:calc(100% + 9px);width:340px;max-width:calc(100vw - 62px);padding:16px;border:1px solid var(--elt-edge);border-radius:13px;background:#fff;box-shadow:0 10px 30px #23435920}
.elm-search-panel>label{display:block;margin:0 0 9px;color:#4b667a;font:600 12px/1.5 Arial,sans-serif}
.elm-search-fields{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px}
.elm-search-fields input{display:block;min-width:0;width:100%;height:43px;padding:10px 11px;border:1px solid #c8d9e6;border-radius:8px;background:#fafcfe;color:#23455f;font:14px/1.5 Arial,sans-serif}
.elm-search-panel .elm-search-button{min-height:43px;padding:8px 13px;border-radius:8px;gap:8px}
.elm-topic-options{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px 10px}
.elm-catalog .elm-topic-option{display:flex;align-items:center;gap:10px;min-width:0;min-height:48px;padding:10px 12px;border:1px solid #d7e3ec;border-radius:10px;background:#fff;color:#425f74;font:500 14px/1.45 Arial,sans-serif;text-decoration:none;transition:background .18s,border-color .18s,box-shadow .18s}
.elm-topic-name{min-width:0;flex:1;text-wrap:pretty}
.elm-topic-indicator{display:block;position:relative;flex:none;width:17px;height:17px;border:1px solid #c5d5e1;border-radius:5px;background:#f9fbfd}
.elm-topic-count{display:inline-flex;align-items:center;justify-content:center;flex:none;min-width:27px;min-height:24px;padding:3px 7px;border-radius:7px;background:#f0f5f9;color:#71899b;font:600 11px/1.5 Arial,sans-serif}
.elm-catalog .elm-topic-option[aria-current]{border-color:var(--elt-accent);background:var(--elt-soft);color:var(--elt-accent);box-shadow:inset 3px 0 var(--elt-accent);font-weight:600}
.elm-topic-option[aria-current] .elm-topic-indicator{border-color:var(--elt-accent);background:var(--elt-accent)}
.elm-topic-option[aria-current] .elm-topic-indicator::after{content:'';position:absolute;left:4px;top:3px;width:7px;height:4px;border-left:2px solid #fff;border-bottom:2px solid #fff;transform:rotate(-45deg)}
.elm-topic-option[aria-current] .elm-topic-count{background:var(--elt-accent);color:#fff}
.elm-result-line{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:2px 0 16px}
.elm-result-line .elm-result{flex:1;min-width:0}
.elm-result-line .elm-reset{flex:none;min-height:32px;padding:5px 9px;font-size:11px}
@media(hover:hover){.elm-catalog .elm-topic-option:hover{border-color:var(--elt-accent);background:var(--elt-soft);box-shadow:0 3px 9px #2343590b}.elm-quick-search>summary:hover{border-color:var(--elt-accent);background:var(--elt-soft)}}
.elm-shell summary:focus-visible{outline:3px solid #dc991f;outline-offset:3px}
@media(max-width:1000px){.elm-heading--tools{grid-template-columns:minmax(0,1fr);gap:12px}.elm-tools{justify-content:flex-start;padding-top:0}.elm-topic-options{gap:8px}.elm-catalog .elm-topic-option{font-size:13px;padding:10px}}
@media(max-width:640px){.elm-heading--tools{margin-bottom:15px;gap:13px}.elm-tools{justify-content:space-between;gap:8px}.elm-tools .elm-sort-field select{width:150px;height:44px;font-size:13px}.elm-quick-search>summary{min-height:44px;padding-inline:13px}.elm-topic-options{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.elm-catalog .elm-topic-option{min-height:49px;gap:8px;padding:9px 10px;font-size:12px;line-height:1.45;border-radius:9px}.elm-topic-indicator{display:none}.elm-topic-count{min-width:24px;padding:3px 6px;font-size:11px}.elm-topic-option[aria-current] .elm-topic-name::before{content:'✓';margin-right:6px}.elm-search-panel{max-width:calc(100vw - 62px);padding:13px}.elm-search-fields input{font-size:16px}.elm-result-line{padding-bottom:13px;gap:9px}.elm-result-line .elm-reset{min-height:38px}.elm-result-line .elm-range{flex-basis:auto;margin-left:0}}
@media(prefers-reduced-motion:reduce){.elm-topic-option,.elm-quick-search>summary{transition:none!important}}

/* Category navigation, topic controls and the article list are three independent panels. */
.elm-shell>.etop-reading-content{background:transparent;border:0;border-radius:0;box-shadow:none;overflow:visible}
.elm-shell .elm-section-nav{margin:0 0 20px;padding:22px 32px;border:1px solid #dce5ee;border-radius:16px;background:#fff;box-shadow:0 4px 18px #22466406}
.elm-shell .etop-reading-content>.elm-catalog{padding:0;margin:0;border:0;border-radius:0;background:transparent;box-shadow:none;overflow:visible}
.elm-catalog>.elm-filter-form,.elm-catalog>.elm-results-panel{box-sizing:border-box;padding:27px 32px;border:1px solid #dce5ee;border-radius:16px;background:#fff;box-shadow:0 4px 18px #22466406}
.elm-catalog>.elm-filter-form{position:relative;z-index:2;margin:0 0 20px;overflow:visible}
.elm-catalog>.elm-results-panel{position:relative;z-index:1;padding-top:22px;padding-bottom:30px}
.elm-results-panel .elm-result-line{padding-top:0;padding-bottom:18px}
.elm-results-panel .elm-empty{border-top:0}
/* A reading page has one article panel below its separate section menu. */
.elm-shell .etop-reading-content>.etop-article-detail{max-width:none;border:1px solid #dce5ee;border-radius:16px;background:#fff;box-shadow:0 4px 18px #22466406;overflow:hidden}
@media(max-width:900px){.elm-shell .elm-section-nav{padding:20px 25px}.elm-catalog>.elm-filter-form,.elm-catalog>.elm-results-panel{padding:24px 25px}.elm-catalog>.elm-results-panel{padding-top:20px;padding-bottom:26px}}
@media(max-width:640px){.elm-shell .elm-section-nav{margin-bottom:14px;padding:16px 14px;border-radius:13px}.elm-catalog>.elm-filter-form,.elm-catalog>.elm-results-panel{padding:20px 15px;border-radius:13px}.elm-catalog>.elm-filter-form{margin-bottom:14px}.elm-catalog>.elm-results-panel{padding-top:17px;padding-bottom:23px}.elm-results-panel .elm-result-line{padding-bottom:14px}.elm-shell .etop-reading-content>.etop-article-detail{border-radius:13px}}
@media(max-width:440px){.elm-catalog>.elm-filter-form,.elm-catalog>.elm-results-panel{padding-inline:14px}}

/* Joyful but comfortable colour belongs to each choice, including its selected state. */
.elm-section-links .elm-color-link{--choice-bg:#eaf3ff;--choice-edge:#bed7f4;--choice-ink:#215f99;display:flex;gap:12px;min-height:61px;padding:10px 13px;border-color:var(--choice-edge);border-radius:12px;background:var(--choice-bg);color:var(--choice-ink);font-size:14px;font-weight:600;transition:box-shadow .18s,border-color .18s,filter .18s}
.elm-section-links .elm-color-link[data-section="27"]{--choice-bg:#e9f8ee;--choice-edge:#b5dfc4;--choice-ink:#276e4a}
.elm-section-links .elm-color-link[data-section="24"]{--choice-bg:#fff5df;--choice-edge:#e8d49e;--choice-ink:#8a6424}
.elm-section-links .elm-color-link[data-section="25"]{--choice-bg:#f2edff;--choice-edge:#d0c1ec;--choice-ink:#6c4e9b}
.elm-section-links .elm-color-link[data-section="26"]{--choice-bg:#ffedf2;--choice-edge:#edbfd0;--choice-ink:#a04b67}
.elm-section-links .elm-color-link[data-section="21"]{--choice-bg:#e7f8f7;--choice-edge:#afdcd8;--choice-ink:#246f71}
.elm-section-icon{display:inline-flex;align-items:center;justify-content:center;flex:0 0 36px;width:36px;height:38px;border-radius:10px;background:#ffffffb3;box-shadow:0 2px 5px #233b5208}
.elm-section-icon svg{display:block;width:30px;height:30px;overflow:visible}
.elm-section-label{min-width:0;text-wrap:pretty}
.elm-section-links .elm-color-link[aria-current]{background:var(--choice-bg);border-color:var(--choice-ink);color:var(--choice-ink);box-shadow:inset 3px 0 var(--choice-ink),0 3px 9px #2945630b}
.elm-catalog .elm-topic-option{--topic-bg:#e9f3ff;--topic-edge:#bfd9f4;--topic-ink:#215f99;background:var(--topic-bg);border-color:var(--topic-edge);color:var(--topic-ink);font-weight:600;min-height:50px}
.elm-topic-option[data-tone="1"]{--topic-bg:#eaf9f1;--topic-edge:#b7e3ce;--topic-ink:#226e51}
.elm-topic-option[data-tone="2"]{--topic-bg:#fff0e7;--topic-edge:#f1c9ae;--topic-ink:#9b542b}
.elm-topic-option[data-tone="3"]{--topic-bg:#f2edff;--topic-edge:#d6caf5;--topic-ink:#6c50a2}
.elm-topic-option[data-tone="4"]{--topic-bg:#fff8dc;--topic-edge:#eadb9b;--topic-ink:#84641b}
.elm-topic-option[data-tone="5"]{--topic-bg:#e8f8fb;--topic-edge:#b5e1e9;--topic-ink:#216c81}
.elm-topic-option[data-tone="6"]{--topic-bg:#ffedf4;--topic-edge:#f1bfd3;--topic-ink:#9a4d70}
.elm-topic-option[data-tone="7"]{--topic-bg:#edf1ff;--topic-edge:#c5cff0;--topic-ink:#4b5da1}
.elm-topic-option[data-tone="8"]{--topic-bg:#f2f9df;--topic-edge:#d4e3af;--topic-ink:#58772a}
.elm-topic-option[data-tone="9"]{--topic-bg:#e5f6f3;--topic-edge:#addcd2;--topic-ink:#287767}
.elm-topic-option .elm-topic-indicator{background:#ffffffc9;border-color:var(--topic-edge)}
.elm-topic-option .elm-topic-count{background:#ffffffbf;color:var(--topic-ink)}
.elm-catalog .elm-topic-option[aria-current]{background:var(--topic-bg);border-color:var(--topic-ink);color:var(--topic-ink);box-shadow:inset 3px 0 var(--topic-ink),0 2px 7px #29456308}
.elm-topic-option[aria-current] .elm-topic-indicator,.elm-topic-option[aria-current] .elm-topic-count{background:var(--topic-ink);border-color:var(--topic-ink);color:#fff}
@media(hover:hover){.elm-section-links .elm-color-link:hover{background:var(--choice-bg);border-color:var(--choice-ink);color:var(--choice-ink);box-shadow:0 3px 10px #29456312;filter:brightness(.985)}.elm-catalog .elm-topic-option:hover{background:var(--topic-bg);border-color:var(--topic-ink);color:var(--topic-ink);box-shadow:0 3px 9px #2945630c}}
@media(max-width:640px){.elm-section-links .elm-color-link{min-height:59px;gap:8px;padding:9px 8px;font-size:12px}.elm-section-icon{flex-basis:28px;width:28px;height:32px;border-radius:8px}.elm-section-icon svg{width:25px;height:25px}.elm-catalog .elm-topic-option{font-size:12px;min-height:50px}.elm-topic-option[aria-current] .elm-topic-name::before{color:var(--topic-ink)}.elm-tools{justify-content:flex-end}}

/* Dedicated phrasal-verb and idiom sections, 11 November 2026. */
.elm-section-links .elm-color-link[data-section="186"]{--choice-bg:#f3f8df;--choice-edge:#d0dda6;--choice-ink:#59742b}
.elm-section-links .elm-color-link[data-section="187"]{--choice-bg:#fff0e6;--choice-edge:#eec5a5;--choice-ink:#92552c}
@media(min-width:1100px){.elm-section-links{grid-template-columns:repeat(4,minmax(0,1fr))}}
@media(min-width:641px) and (max-width:1099px){.elm-section-links{grid-template-columns:repeat(2,minmax(0,1fr))}}