.learning-module-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.learning-module-card{position:relative;display:flex;flex-direction:column;align-items:flex-start;min-width:0;padding:24px;border:1px solid var(--line,#ddd);border-radius:12px;background:var(--surface,#fff);color:var(--ink,#222);text-decoration:none;transition:transform .16s,border-color .16s}
.learning-module-card:hover{transform:translateY(-3px);border-color:var(--blue,#2447d8)}
.learning-module-symbol{font-size:29px;line-height:1;color:var(--blue,#2447d8);margin-bottom:22px}
.learning-module-count{position:absolute;top:25px;right:22px;font-size:11px;color:var(--muted,#666)}
.learning-module-card h3{margin:0 0 10px;font-size:18px;color:var(--ink,#222);line-height:1.4}
.learning-module-card p{margin:0 0 22px;color:var(--muted,#666);font-size:13px;line-height:1.75}
.learning-module-open{display:flex;justify-content:space-between;gap:20px;width:100%;margin-top:auto;font-size:12px;color:var(--blue,#2447d8)}
.learning-home-section{margin:38px 0}.learning-home-section .section-head{margin-bottom:20px}.learning-home-more{white-space:nowrap;color:var(--blue,#2447d8)}
.learning-page .learning-content{padding-top:28px;min-height:65vh}.learning-breadcrumb{display:flex;flex-wrap:wrap;gap:10px;font-size:12px;color:var(--muted,#666);margin-bottom:36px}.learning-breadcrumb a{color:inherit}
.learning-heading{margin-bottom:32px}.learning-heading h1{font-size:clamp(30px,4vw,48px);margin:8px 0 16px;color:var(--ink,#222);line-height:1.2}.learning-heading>p:not(.section-kicker){color:var(--muted,#666);font-size:15px;line-height:1.8}.learning-total{display:inline-block;margin-top:6px;padding:6px 10px;border:1px solid var(--line,#ddd);border-radius:5px;font-size:12px;color:var(--muted,#666)}
.learning-module-nav{display:flex;gap:8px;flex-wrap:wrap;margin:0 0 28px}.learning-module-nav a{padding:8px 12px;border:1px solid var(--line,#ddd);border-radius:6px;font-size:12px;color:var(--ink,#222);background:var(--surface,#fff);text-decoration:none}.learning-module-nav a[aria-current=page]{background:var(--blue,#2447d8);border-color:var(--blue,#2447d8);color:var(--theme-on-accent,#fff)}
.learning-search{display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin-bottom:20px;font-size:12px;color:var(--muted,#666)}.learning-search input{flex:1;min-width:180px;padding:12px 14px;border:1px solid var(--line,#ddd);background:var(--surface,#fff);color:var(--ink,#222);border-radius:7px;font:inherit}.learning-search input:focus-visible{outline:2px solid var(--blue,#2447d8);outline-offset:2px}
.learning-lessons{display:grid;gap:12px}.learning-lesson-card{display:flex;gap:20px;align-items:flex-start;border:1px solid var(--line,#ddd);border-radius:9px;background:var(--surface,#fff);padding:22px;color:var(--ink,#222);text-decoration:none}.learning-lesson-card:hover{border-color:var(--blue,#2447d8)}.learning-lesson-card>div{flex:1;min-width:0}.learning-lesson-index{font:12px Consolas,monospace;color:var(--muted,#666);padding-top:4px}.learning-lesson-card h2{font-size:17px;line-height:1.5;margin:0 0 9px}.learning-lesson-card p{font-size:13px;color:var(--muted,#666);line-height:1.8;margin:0;overflow-wrap:anywhere}.learning-empty{color:var(--muted,#666);padding:20px 0;font-size:14px}
.learning-module-card:focus-visible,.learning-lesson-card:focus-visible,.learning-module-nav a:focus-visible{outline:2px solid var(--blue,#2447d8);outline-offset:4px}
.learning-lesson-card[hidden]{display:none}
@media(max-width:1100px){.learning-module-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:600px){.learning-module-grid{grid-template-columns:minmax(0,1fr)}.learning-module-card{padding:20px}.learning-module-symbol{margin-bottom:17px}.learning-module-card p{margin-bottom:16px}.learning-heading{margin-bottom:24px}.learning-breadcrumb{margin-bottom:25px}.learning-lesson-card{padding:18px 15px;gap:12px}.learning-search label{width:100%}.learning-search input{min-width:0;width:100%}.learning-home-section .section-head{flex-wrap:wrap;gap:12px}}
@media(prefers-reduced-motion:reduce){.learning-module-card{transition:none}}