/* Scoped extensions of the existing topic cards, reading typography and navigation. */
[data-nav="learn"]{--nav-day:#6847ba;--nav-night:#c4acff}
[data-nav="topics"]{--nav-day:#3263b6;--nav-night:#9dbdf4}
[data-nav="vocabulary"],[data-nav="dictionary"]{--nav-day:#964b9b;--nav-night:#ddb0df}
[data-nav="reading"]{--nav-day:#28765e;--nav-night:#8dd4b8}
[data-nav="conversations"]{--nav-day:#8b5b1d;--nav-night:#e5bf81}
[data-nav="review"]{--nav-day:#a34c3f;--nav-night:#edae9e}
[data-nav="level-check"]{--nav-day:#2c7379;--nav-night:#95d3d9}
.sidebar,.dictionary-page .sidebar{overflow-y:auto;scrollbar-width:none;overscroll-behavior:contain}
.sidebar::-webkit-scrollbar{display:none;width:0;height:0}
.sidebar .brand,.sidebar .nav-caption,.sidebar #sidebar-navigation,.sidebar .sidebar-bottom{flex-shrink:0}
.sidebar .nav-item{margin-bottom:5px;min-height:50px}
.mobile-nav a{--nav-color:var(--nav-day);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;min-width:0;min-height:44px;padding:4px 3px;font-size:10px;color:var(--muted);text-decoration:none}
html[data-theme="dark"] .mobile-nav a{--nav-color:var(--nav-night)}
.mobile-nav a.active{color:var(--nav-color);font-weight:650}
.mobile-nav a>svg{color:var(--nav-color)}
.hub-toolbar{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin:26px 0 12px}
.hub-switch{display:flex;flex-wrap:wrap;gap:7px}
.hub-switch button{min-height:44px;padding:9px 16px;border:1px solid var(--line);border-radius:8px;background:transparent;color:var(--ink);font:inherit;font-size:13px;cursor:pointer}
.hub-switch button[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.hub-switch button:hover:not([aria-pressed="true"]){background:var(--light)}
.hub-search{display:grid;gap:7px;font-size:12px;color:var(--page-muted,#625c76);min-width:min(100%,280px)}
.hub-search input{font:inherit;font-size:14px;min-height:46px;border:1px solid var(--line);border-radius:8px;background:var(--paper);color:var(--ink);padding:11px 13px;width:100%;caret-color:var(--purple)}
.hub-search input::placeholder{color:var(--page-muted,#625c76);opacity:1}
.hub-match-count{font-size:12px;color:var(--page-muted,#625c76);margin:0 0 20px;line-height:1.7}
.hub-rule-coverage{font-size:11px!important;margin:0 0 13px!important;min-height:0!important}
.topic-card h2 a:hover{text-decoration:underline;text-underline-offset:4px}
.topic-card .topic-card-bottom{align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}
.topic-card .topic-card-bottom .text-button{min-height:44px;font-size:12px}
.hub-method{margin-top:30px;max-width:85ch;line-height:1.85}
.hub-method p+p{margin-top:12px}.hub-method a{color:var(--purple);text-decoration:underline;text-underline-offset:3px}
.hub-empty{padding:34px 0;color:var(--page-muted,#625c76)}.hub-empty h2{font-size:22px;color:var(--ink);margin-bottom:12px}.hub-empty button{margin-top:18px}
.roadmap-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:28px;margin:0 0 28px}
.roadmap-heading p{max-width:60ch;color:var(--page-muted,#625c76);font-size:13px;line-height:1.8}
.roadmap-heading>div{display:flex;gap:18px;flex-wrap:wrap;flex-shrink:0}.roadmap-heading button{min-height:44px}
.roadmap-forest{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:40px;align-items:start}
.roadmap-tree,.roadmap-tree ol{list-style:none;padding:0;margin:0;min-width:0}
.roadmap-tree ol{margin:12px 0 12px 14px;padding-left:14px;border-left:1px solid var(--line)}
.roadmap-tree li{position:relative;margin:0 0 17px;min-width:0}
.roadmap-tree ol>li:before{content:"";position:absolute;left:-14px;top:29px;width:14px;height:1px;background:var(--line)}
.roadmap-node{padding:18px 20px;border:1px solid var(--line);border-radius:12px;background:var(--paper);min-width:0}
.roadmap-node-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:11px}
.roadmap-status,.roadmap-context{font-size:11px;color:var(--page-muted,#625c76)}
.roadmap-title{display:block;font-size:16px;font-weight:600;line-height:1.6;overflow-wrap:anywhere;text-underline-offset:4px}.roadmap-title:hover{text-decoration:underline}
.roadmap-extra{font-size:11px;line-height:1.8;color:var(--page-muted,#625c76);margin-top:10px;overflow-wrap:anywhere}.roadmap-extra a{color:var(--purple);text-decoration:underline;text-underline-offset:3px}
.roadmap-actions{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-top:10px}.roadmap-actions .text-button{min-height:44px;font-size:12px}
.roadmap-branch>summary{font-size:12px;min-height:44px;align-content:center;cursor:pointer;color:var(--page-muted,#625c76);padding-left:14px}
.roadmap-foundation{background:transparent;border-style:dashed}.roadmap-context{display:block;margin-top:8px}
.roadmap-parent{display:none}
.book-chapter-focus{max-width:920px}.book-back{margin-bottom:24px}.book-back a{min-height:44px}
.hub-lookup{margin:28px 0;max-width:880px}.hub-lookup form{display:flex;align-items:flex-end;gap:12px;max-width:760px}.hub-lookup .hub-search{flex:1}.hub-lookup .primary{min-height:46px;flex-shrink:0}
.hub-lookup-help{font-size:13px;line-height:1.8;color:var(--page-muted,#625c76);max-width:75ch;margin:15px 0 26px}
.hub-word-results{list-style:none;padding:0;margin:0}.hub-word-results li{border-bottom:1px solid var(--line)}.hub-word-results a{display:grid;grid-template-columns:minmax(0,1fr) 1.4fr;gap:4px 22px;padding:17px 0;align-items:baseline}.hub-word-results a:hover strong{text-decoration:underline;text-underline-offset:4px}.hub-word-results strong{font:22px/1.6 Georgia,serif}.hub-word-results span{font-size:14px;color:var(--ink)}.hub-word-results small{font-size:11px;color:var(--page-muted,#625c76);grid-column:2;display:flex;align-items:center;gap:8px}
.hub-browse{display:flex;flex-wrap:wrap;gap:12px 28px;margin-top:28px;border-top:1px solid var(--line);padding-top:20px}.hub-browse a{display:flex;align-items:center;gap:9px;min-height:44px;font-size:13px;color:var(--purple);text-underline-offset:4px}.hub-browse a:hover{text-decoration:underline}
.vocabulary-mode .hub-switch{margin:24px 0 32px}.enrich-heading h2{font-size:23px;letter-spacing:-.02em;font-weight:550;margin-bottom:8px}.enrich-heading p{font-size:13px;color:var(--page-muted,#625c76);line-height:1.8;max-width:65ch}.enrich-heading{margin-bottom:22px}
.vocabulary-settings.vocabulary-simple{max-width:680px;padding:28px}.vocabulary-difficulty{display:grid;gap:14px}.vocabulary-difficulty>label{font-size:14px;font-weight:600;display:flex;justify-content:space-between;gap:20px}.vocabulary-difficulty output{color:var(--purple);font-size:14px}
.vocabulary-difficulty input[type="range"]{display:block;width:100%;min-height:44px;padding:0;margin:0;accent-color:var(--purple);cursor:pointer;background:transparent}
.difficulty-stops{display:flex;justify-content:space-between;font-size:13px;color:var(--page-muted,#625c76);font-variant-numeric:tabular-nums}.difficulty-stops [data-active]{font-weight:700;color:var(--ink)}
.vocabulary-simple .vocabulary-meta{line-height:1.8;font-size:13px}.vocabulary-simple .primary{margin-top:14px;min-height:46px}.enrich-practice-note{font-size:12px;color:var(--page-muted,#625c76);margin:15px 0;line-height:1.8}.vocabulary-mode.feed-column{max-width:100%}.vocabulary-mode .vocabulary-card{max-width:760px}.vocabulary-mode .vocabulary-toolbar,.vocabulary-mode .vocabulary-milestone{max-width:760px}
@media(max-height:820px) and (min-width:761px){.sidebar{padding-top:24px;padding-bottom:16px}.sidebar .nav-caption{margin-top:34px;margin-bottom:13px}.sidebar .sidebar-toggle{top:94px}.sidebar .nav-item{min-height:46px;padding-top:7px;padding-bottom:7px;margin-bottom:3px}.sidebar .level-label{margin-block:17px}.sidebar-bottom>p{padding-top:12px}}
@media(max-width:1050px){.roadmap-forest{grid-template-columns:1fr;gap:24px}.roadmap-heading{flex-direction:column;gap:8px}}
@media(max-width:760px){.mobile-nav{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:0}.hub-toolbar{align-items:stretch;flex-direction:column;gap:20px}.hub-search{min-width:0}.hub-switch button{padding-inline:13px}.hub-lookup form{align-items:stretch;flex-direction:column}.hub-lookup form>.primary{align-self:flex-start}.roadmap-tree ol{margin-left:10px;padding-left:10px}.roadmap-tree ol>li:before{left:-10px;width:10px}.roadmap-node{padding:15px}.roadmap-node-top{gap:7px;flex-wrap:wrap}.roadmap-status{font-size:10px}.roadmap-title{font-size:15px}.roadmap-actions{gap:5px}.roadmap-actions .text-button{font-size:11px}.vocabulary-settings.vocabulary-simple{padding:23px 20px}.hub-word-results a{grid-template-columns:1fr;gap:3px}.hub-word-results small{grid-column:1}.hub-word-results strong{font-size:21px}}
@media(max-width:760px){.roadmap-tree ol ol ol{margin-left:0;padding-left:0;border-left:0}.roadmap-tree ol ol ol>li:before{display:none}.roadmap-parent{display:block;font-size:11px;color:var(--page-muted,#625c76);line-height:1.8;margin-top:10px}.roadmap-parent a{color:var(--purple);text-decoration:underline;text-underline-offset:3px}}