/* Imported lessons use the ATLAS shell and tokens. Practice styles stay inside the lesson. */
.learning-layout{grid-template-columns:210px minmax(0,1fr)}
.learning-layout .article-toc a{font-size:12px;line-height:1.6}
.learning-layout .article-toc .toc-sticky{max-height:calc(100vh - 130px);overflow-y:auto}
.learning-module{--surface:var(--white);--paper-alt:var(--mint);--ink-soft:#52605c;--accent:var(--blue);--accent-soft:#e9edfb;--code-bg:#edf0f5;--ok:#2f6b45;--ng:#a73535;color:var(--ink);font-size:16px;line-height:1.9;min-width:0}
.learning-module .wrap{width:100%;max-width:none;margin:0;padding:0}
.learning-module .section{padding:36px 0;margin:0;border-top:1px solid var(--line);background:none;color:inherit}
.learning-module h2{font-size:26px;line-height:1.5;margin:0 0 20px;color:var(--ink);text-align:left}
.learning-module h3{font-size:18px;line-height:1.6;margin:0 0 12px;color:var(--ink)}
.learning-module p{margin:10px 0 16px;font-size:inherit;color:inherit}
.learning-module .kicker{font:650 12px/1.6 var(--sans);color:var(--accent);margin:0 0 9px}
.learning-module .kicker .sym{margin-right:8px}
.learning-module a{color:var(--accent);text-decoration:underline;text-underline-offset:3px;overflow-wrap:anywhere}
.learning-module code,.learning-module pre,.learning-module textarea{font-family:var(--mono);font-size:14px;line-height:1.8}
.learning-module code{background:var(--code-bg);color:var(--ink);padding:2px 4px}
.learning-module pre{padding:20px;margin:0;white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-word;background:var(--code-bg);color:var(--ink);border:0;border-radius:6px}
.learning-module pre code{padding:0}
.learning-module textarea,.learning-module input[type=text],.learning-module select{width:100%;border:1px solid var(--line);border-radius:6px;background:var(--surface);color:var(--ink);padding:12px;min-height:44px}
.learning-module textarea{resize:vertical;display:block;min-height:180px}
.learning-module textarea::placeholder,.learning-module input::placeholder{color:var(--ink-soft);opacity:1}
.learning-module button{min-height:44px}
.learning-module button:disabled{opacity:.55;cursor:not-allowed}
.learning-module .btn,.learning-module .chip,.learning-module .source-copy,.learning-module .draft-file-label{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:44px;padding:9px 15px;border:1px solid var(--line);border-radius:6px;background:var(--surface);color:var(--ink);font:650 13px/1.6 var(--sans);text-decoration:none;cursor:pointer}
.learning-module .btn-primary{background:var(--blue);border-color:var(--blue);color:var(--paper)}
.learning-module .btn:hover,.learning-module .chip:hover,.learning-module .source-copy:hover{border-color:var(--accent)}
.learning-module .essential-grid,.learning-module .basics-grid,.learning-module .pit-grid,.learning-module .concept-grid,.learning-module .leader-grid,.learning-module .compare,.learning-module .before-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;padding:0;list-style:none}
.learning-module .essential-item,.learning-module .basic-card,.learning-module .pit,.learning-module .concept-card,.learning-module .leader-box,.learning-module .compare-card,.learning-module .before-list>li,.learning-module .verdict-card{min-width:0;background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:22px;margin:0}
.learning-module .essential-symbol{display:block;font:700 28px/1.2 var(--mono);color:var(--accent);margin-bottom:18px}
.learning-module .io,.learning-module .pg,.learning-module .prep{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:20px 0}
.learning-module .io>*,.learning-module .pg>*,.learning-module .prep>*{min-width:0}
.learning-module .io{grid-template-columns:1fr;gap:0;border:1px solid var(--line);border-radius:6px;overflow:hidden}
.learning-module .io .out{padding:20px;background:var(--surface);border-top:1px solid var(--line)}
.learning-module .paper,.learning-module .pg-pane,.learning-module .prep-in,.learning-module .prep-out{border:1px solid var(--line);border-radius:8px;overflow:hidden;background:var(--surface);min-width:0}
.learning-module .paper-label,.learning-module .pg-label{display:block;padding:10px 15px;margin:0;font-size:12px;font-weight:650;color:var(--ink-soft);background:var(--code-bg);border-bottom:1px solid var(--line)}
.learning-module .hero-visual{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.learning-module .try-caption{grid-column:1/-1;margin:0;font-size:14px;color:var(--ink-soft)}
.learning-module .hero-input,.learning-module #pg-input{border:0;border-radius:0;min-height:240px}
.learning-module .paper-out .md-out{padding:18px;min-height:240px;max-height:360px;overflow:auto}
.learning-module .pg-output{padding:18px;height:380px;overflow:auto}
.learning-module #pg-input{height:380px;min-height:240px}
.learning-module .md-out{overflow-wrap:anywhere;background:var(--surface);color:var(--ink)}
.learning-module .md-out :is(h1,h2,h3,h4,h5,h6){color:var(--ink);text-align:left;letter-spacing:normal;margin:18px 0 10px}
.learning-module .md-out h1{font-size:25px}.learning-module .md-out h2{font-size:22px}.learning-module .md-out h3{font-size:19px}
.learning-module .md-out p{margin:10px 0}.learning-module .md-out li+li{margin-top:4px}
.learning-module .md-out blockquote{border-left:3px solid var(--accent);padding-left:14px;margin:15px 0;color:var(--ink-soft)}
.learning-module .md-out hr{border:0;border-top:1px solid var(--line);margin:20px 0}
.learning-module .md-out input[type=checkbox]{margin-right:8px}
.learning-module .pg-toolbar,.learning-module .pg-actions,.learning-module .tpl-actions,.learning-module .out-actions,.learning-module .prep-toolbar,.learning-module .pg-file-actions{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin:16px 0}
.learning-module .pg-toolbar-label{font-size:12px;font-weight:650}
.learning-module .pg-file-actions input{max-width:100%;width:auto;font-size:13px}
.learning-module .pg-file-actions>span{flex-basis:100%;font-size:12px;color:var(--ink-soft)}
.learning-module .pg-note,.learning-module .out-note,.learning-module .editing-note,.learning-module .table-hint,.learning-module .scroll-hint,.learning-module .legend,.learning-module .asof,.learning-module .prep-privacy{font-size:13px;color:var(--ink-soft)}
.learning-module .quick-example,.learning-module .rules-box,.learning-module .usage-reminder,.learning-module .usage-notes,.learning-module .callout,.learning-module .comparison-example,.learning-module .compare-reflection{padding:20px;background:var(--paper-alt);border-radius:6px;margin:20px 0}
.learning-module .callout-title{font-weight:700;margin-top:0}
.learning-module .ai-tip,.learning-module .tip,.learning-module .space-reminder{padding:14px 18px;background:var(--yellow);border-radius:6px;margin:16px 0;color:var(--ink)}
.learning-module .tabs{display:flex;gap:8px;flex-wrap:wrap;border-bottom:1px solid var(--line);padding-bottom:10px;margin:20px 0}
.learning-module .tabs button{display:flex;align-items:center;justify-content:center;gap:9px;padding:10px 16px;border-radius:6px;border:1px solid var(--line);color:var(--ink);background:var(--surface);font-size:14px}
.learning-module .tabs button[aria-selected=true]{border-color:var(--accent);background:var(--accent-soft);color:var(--accent);font-weight:700}
.learning-module .tabs small{display:block;font-size:12px}
.learning-module .tpl-notes{font-size:14px}
.learning-module .title-row,.learning-module .out-head{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.learning-module .title-row h2,.learning-module .out-head h3{margin:0}
.learning-module .source-block{position:relative;min-width:0;border-radius:6px;overflow:hidden;margin:14px 0;background:var(--code-bg);padding-top:44px}
.learning-module .source-copy{position:absolute;right:6px;top:4px;min-height:36px;padding:5px 10px;font-size:12px}
.learning-module .sym{color:var(--accent);font-weight:700}
.learning-module .ok{color:var(--ok)}.learning-module .ng{color:var(--ng)}
.learning-module .cs-table-wrap,.learning-module .map-wrap,.learning-module .md-table{overflow-x:auto;max-width:100%;margin:20px 0}
.learning-module table{display:table;width:100%;border-collapse:collapse;margin:0;font-size:13px;background:var(--surface);color:var(--ink)}
.learning-module th,.learning-module td{padding:12px;border:1px solid var(--line);text-align:left;vertical-align:top}
.learning-module th{background:var(--paper-alt);color:var(--ink);font-weight:650}
.learning-module .age-table{table-layout:fixed}
.learning-module .age-table th,.learning-module .age-table td{min-width:0;overflow-wrap:anywhere;padding:8px}
.learning-module .map-table{min-width:640px}.learning-module .cs-table{min-width:580px}
.learning-module table small{display:block;font-size:12px;line-height:1.7;color:var(--ink-soft);margin-top:6px}
.learning-module .cs-table pre{padding:8px;min-width:130px;font-size:12px}
.learning-module .verdict-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin:24px 0}
.learning-module .verdict-card{padding:18px;font-size:14px}
.learning-module .verdict-card header{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.learning-module .verdict-card h3{margin:0}
.learning-module .verdict-badge,.learning-module .svc-tag{font-size:12px;font-weight:650}
.learning-module .mini-checks{list-style:none;padding:0;margin:16px 0}
.learning-module .mini-checks .v{margin-right:7px;color:var(--accent)}
.learning-module .verdict-age,.learning-module .source-link{font-size:12px}
.learning-module .verdict-age>span{display:block;font-weight:650}
.learning-module .service-icon{display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;width:36px;height:36px;background:#fff;border:1px solid #dedfd7;border-radius:6px;padding:5px}
.learning-module .service-icon img{width:26px;height:26px;object-fit:contain;border:0;margin:0}
.learning-module .table-service{display:flex;align-items:center;gap:7px;white-space:nowrap}
.learning-module .concept-symbol{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;background:var(--accent-soft);color:var(--accent);border-radius:8px;margin-bottom:14px}
.learning-module .prep{grid-template-columns:1fr}
.learning-module .prep-in,.learning-module .prep-out{padding:22px}
.learning-module .field{margin:18px 0}
.learning-module .field>label{display:block;font-weight:650;font-size:14px;margin-bottom:8px}
.learning-module .field small{display:block;font-size:12px;color:var(--ink-soft)}
.learning-module .prep-target{display:flex;flex-wrap:wrap;gap:12px;border:1px solid var(--line);padding:16px;border-radius:6px;margin:16px 0}
.learning-module .prep-target legend{font-size:14px;padding:0 5px}
.learning-module .prep-target label{display:flex;align-items:center;gap:6px;min-height:44px}
.learning-module .out-block+.out-block{border-top:1px solid var(--line);margin-top:24px;padding-top:24px}
.learning-module .out-text{max-height:400px;min-height:100px;overflow:auto}
.learning-module .out-text:empty::before{content:'入力すると、ここに文章が表示されます。';color:var(--ink-soft)}
.learning-module .counter{font-size:12px;color:var(--ink-soft)}
.learning-module .download-format{display:flex;align-items:center;gap:8px;font-size:13px}
.learning-module .download-format select{width:auto}
.learning-module .steps{list-style:none;counter-reset:lesson-step;padding:0;margin:24px 0}
.learning-module .steps>li{position:relative;padding:0 0 26px 44px;margin:22px 0;border-bottom:1px solid var(--line);counter-increment:lesson-step}
.learning-module .steps>li::before{content:counter(lesson-step);position:absolute;left:0;top:0;width:30px;height:30px;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent);border-radius:50%;font-weight:700}
.learning-module .screenshot-placeholder{border:1px dashed var(--line);border-radius:6px;background:var(--surface);padding:18px;margin:20px 0}
.learning-module .screenshot-slot{display:flex;flex-direction:column;gap:6px;font-size:14px;color:var(--ink-soft)}
.learning-module .screenshot-placeholder figcaption{font-size:12px;color:var(--ink-soft);margin-top:10px}
.learning-module .comparison-flow{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.learning-module .comparison-flow>div{padding:14px;background:var(--surface);border:1px solid var(--line);border-radius:6px;min-width:0}
.learning-module .comparison-flow span{font-size:12px;font-weight:650;color:var(--accent)}
.learning-module .comparison-flow p{font-size:14px}
.learning-module .compare-route,.learning-module .compare-topics{padding-left:24px}
.learning-module .compare-topics li{margin:16px 0}
.learning-module .compare-topics strong{display:block}
.learning-module details{padding:18px;border:1px solid var(--line);border-radius:6px;margin:18px 0;background:var(--surface)}
.learning-module summary{cursor:pointer;font-size:14px;font-weight:650}
.learning-module .sources{font-size:13px}
.learning-module .other-svc dt{font-weight:650;margin-top:14px}.learning-module .other-svc dd{margin:4px 0 16px}
.learning-module .visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
.learning-module #sr-status:not(:empty){position:static;width:auto;height:auto;margin:16px 0;clip-path:none;white-space:normal;color:var(--accent);font-size:14px}
@media(min-width:1500px){.learning-module .prep{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:1100px){.learning-module .verdict-grid{grid-template-columns:1fr}.learning-module .verdict-card{padding:22px}.learning-module .essential-grid,.learning-module .basics-grid{grid-template-columns:1fr}.learning-layout{gap:28px;grid-template-columns:180px minmax(0,1fr)}}
@media(max-width:800px){.learning-layout{display:block}.learning-layout .article-toc .toc-sticky{position:static;max-height:none;overflow:visible}.learning-layout .article-toc{margin-bottom:24px}.learning-module .section{padding:28px 0}.learning-module h2{font-size:23px}.learning-module .pg,.learning-module .hero-visual,.learning-module .compare,.learning-module .before-list,.learning-module .concept-grid,.learning-module .leader-grid,.learning-module .pit-grid,.learning-module .comparison-flow{grid-template-columns:1fr}.learning-module .steps>li{padding-left:36px}.learning-module .prep-in,.learning-module .prep-out{padding:16px}.learning-module .tabs button{flex:1 1 140px}.learning-module .download-format{flex-wrap:wrap}}
@media print{.learning-module button,.learning-module .pg-file-actions,.learning-module .tabs{display:none}.learning-module .tab-panel[hidden]{display:block!important}.learning-module{color:#222;background:#fff}.learning-module .section{break-inside:auto}.learning-module .pg-output,.learning-module .paper-out .md-out,.learning-module .out-text{height:auto;max-height:none;overflow:visible}}