.learning-path { background: var(--paper); }
.learning-kicker { color: var(--teal-deep); font: .72rem var(--mono, monospace); letter-spacing: .14em; margin-bottom: 14px; }
.learning-heading { display: flex; justify-content: space-between; gap: 32px; align-items: end; margin-bottom: 28px; }
.learning-heading h2, .learning-hero h1 { font-family: var(--display); letter-spacing: -.035em; line-height: 1.2; font-size: clamp(2rem, 4vw, 3.5rem); font-weight: 500; }
.learning-heading p:not(.learning-kicker), .learning-hero > p:not(.learning-kicker) { color: var(--ink-soft); max-width: 40em; margin-top: 16px; line-height: 1.8; }
.learning-shortcuts { display: flex; gap: 14px 24px; flex-wrap: wrap; align-items: center; margin: 26px 0; }
.learning-shortcuts a, .learning-theme { border: 1px solid var(--line-strong); padding: 11px 18px; border-radius: 6px; text-decoration: none; color: var(--teal-deep); background: var(--surface); }
.learning-shortcuts a:first-child { background: var(--teal-deep); color: var(--paper); border-color: var(--teal-deep); }
.learning-route-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.learning-route-card { display: flex; flex-direction: column; position: relative; min-height: 272px; padding: 27px; border: 1px solid var(--line); border-radius: 8px 28px 8px 8px; background: var(--surface); color: var(--ink); text-decoration: none; transition: transform .18s, border-color .18s; overflow: hidden; }
.learning-route-illustration { position: absolute; width: 112px; height: 112px; object-fit: contain; top: 10px; right: 16px; pointer-events: none; }
.learning-route-card:hover { transform: translateY(-4px); border-color: var(--teal); }
.learning-route-card:first-child { background: color-mix(in srgb, var(--teal-soft) 50%, var(--surface)); }
.learning-route-number { font: italic 1.6rem var(--display); color: var(--teal); min-height: 84px; margin-bottom: 14px; }
.learning-route-card h3 { font: 500 1.3rem var(--display); margin-bottom: 12px; line-height: 1.4; }
.learning-route-card p { color: var(--ink-soft); font-size: .9rem; line-height: 1.7; }
.learning-route-card small { display: block; color: var(--ink-soft); font-size: .73rem; margin: 18px 0 24px; }
.learning-route-card strong { margin-top: auto; font-size: .82rem; color: var(--teal-deep); font-weight: 500; }
.learning-topic-strip { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; align-items: center; }
.learning-topic-strip > span { color: var(--ink-soft); font-size: .8rem; margin-right: 6px; }
.learning-topic-strip a { color: var(--teal-deep); border-bottom: 1px solid var(--line); text-decoration: none; font-size: .8rem; padding: 5px 0; margin-right: 12px; }
.learning-page { background: var(--paper); color: var(--ink); min-height: 100vh; }
.learning-header { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-block: 24px; border-bottom: 1px solid var(--line); }
.learning-header nav { display: flex; flex-wrap: wrap; gap: 24px; font-size: .85rem; }
.learning-header nav a, .learning-footer a, .learning-back { color: var(--teal-deep); text-decoration: none; }
.learning-theme { cursor: pointer; font-size: .8rem; }
.learning-main { padding-block: 64px; min-height: 75vh; }
.learning-hero { max-width: 850px; margin-bottom: 35px; }
.learning-hero .learning-back { display: inline-block; margin-bottom: 26px; font-size: .85rem; }
.learning-notice { border-left: 3px solid var(--teal); padding: 14px 20px; background: var(--surface-soft); color: var(--ink-soft); line-height: 1.8; font-size: .83rem; margin: 30px 0; }
.learning-section-title { font: 500 1.7rem var(--display); margin: 42px 0 20px; }
.learning-topic-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.learning-topic-card { display: block; padding: 20px; border: 1px solid var(--line); background: var(--surface); border-radius: 6px; color: var(--ink); text-decoration: none; }
.learning-topic-card h3 { font: 500 1rem var(--display); margin-bottom: 10px; }
.learning-topic-card p { color: var(--ink-soft); font-size: .78rem; line-height: 1.7; }
.learning-topic-card small { display: block; color: var(--teal-deep); margin-top: 14px; font-size: .73rem; }
.learning-topic-card[aria-current="true"] { border-color: var(--teal); background: var(--teal-soft); }
.learning-route-layout { display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 54px; align-items: start; }
.learning-route-aside { position: sticky; top: 24px; padding: 24px; border: 1px solid var(--line); border-radius: 6px; background: var(--surface); }
.learning-route-aside h2 { font-size: .8rem; color: var(--teal-deep); margin-bottom: 9px; }
.learning-route-aside p { font-size: .83rem; color: var(--ink-soft); line-height: 1.8; margin-bottom: 22px; }
.learning-route-aside ol { padding-left: 20px; font-size: .85rem; line-height: 1.8; }
.learning-route-aside li { margin-bottom: 12px; }
.learning-route-aside a { color: var(--teal-deep); }
.learning-phase { scroll-margin-top: 25px; border-top: 1px solid var(--line); padding: 25px 0 32px; }
.learning-phase-label { font: .7rem var(--mono, monospace); color: var(--teal); letter-spacing: .12em; margin-bottom: 10px; }
.learning-phase h2 { font: 500 1.6rem var(--display); margin-bottom: 12px; }
.learning-phase > p { color: var(--ink-soft); line-height: 1.8; font-size: .9rem; margin-bottom: 20px; }
.learning-resource { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 20px; align-items: center; background: var(--surface); border: 1px solid var(--line); padding: 22px; margin-top: 12px; border-radius: 6px; color: var(--ink); text-decoration: none; }
.learning-resource h3 { font: 500 1.1rem var(--display); margin: 9px 0; }
.learning-resource p { font-size: .83rem; color: var(--ink-soft); line-height: 1.8; }
.learning-resource small { color: var(--teal-deep); font-size: .7rem; }
.learning-resource > span { color: var(--teal-deep); font-size: .8rem; white-space: nowrap; }
.learning-resource:hover, .learning-topic-card:hover { border-color: var(--teal); }
.learning-practice { padding: 18px 22px; border: 1px dashed var(--line-strong); color: var(--ink-soft); font-size: .83rem; line-height: 1.8; border-radius: 6px; }
.learning-filters { display: grid; grid-template-columns: minmax(0, 2fr) repeat(2, minmax(0, 1fr)); gap: 16px; margin: 32px 0 18px; }
.learning-filters label { font-size: .75rem; color: var(--ink-soft); }
.learning-filters input, .learning-filters select { width: 100%; min-height: 46px; margin-top: 7px; border: 1px solid var(--line-strong); border-radius: 5px; background: var(--surface); color: var(--ink); padding: 10px 12px; }
.learning-results-count { color: var(--ink-soft); font-size: .8rem; margin-bottom: 20px; }
.learning-library-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.learning-library-grid .learning-resource { margin: 0; align-items: start; }
.learning-empty { padding: 36px; border: 1px dashed var(--line-strong); line-height: 1.8; color: var(--ink-soft); grid-column: 1 / -1; }
.learning-load-more { grid-column: 1 / -1; justify-self: center; margin-top: 16px; padding: 12px 28px; border: 1px solid var(--line-strong); border-radius: 6px; background: var(--surface); color: var(--teal-deep); cursor: pointer; }
.learning-footer { display: flex; flex-wrap: wrap; gap: 24px; justify-content: space-between; border-top: 1px solid var(--line); padding-block: 24px; font-size: .75rem; color: var(--ink-soft); }
.learning-skip { position: absolute; left: 16px; top: -100px; padding: 14px; background: var(--paper); color: var(--ink); z-index: 100; }
.learning-skip:focus { top: 10px; }
.learning-page a:focus-visible, .learning-page button:focus-visible, .learning-path a:focus-visible, .learning-page input:focus-visible, .learning-page select:focus-visible { outline: 3px solid var(--teal); outline-offset: 4px; }
@media (max-width: 1000px) { .learning-route-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } .learning-topic-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } .learning-route-layout { grid-template-columns: 210px minmax(0, 1fr); gap: 24px; } }
@media (max-width: 640px) { .learning-route-grid, .learning-library-grid, .learning-route-layout, .learning-filters { grid-template-columns: 1fr; } .learning-heading { display: block; } .learning-main { padding-block: 36px; } .learning-header { gap: 15px; flex-wrap: wrap; } .learning-header nav { order: 3; width: 100%; gap: 20px; } .learning-route-card { min-height: 235px; padding: 23px; } .learning-route-illustration { width: 96px; height: 96px; top: 8px; right: 12px; } .learning-route-number { min-height: 72px; } .learning-route-aside { position: static; } .learning-route-aside ol { margin-bottom: 0; } .learning-resource { padding: 18px; gap: 12px; } .learning-resource > span { font-size: .7rem; } .learning-topic-card { padding: 16px; } .learning-footer { justify-content: start; } }
@media (prefers-reduced-motion: reduce) { .learning-route-card { transition: none; } .learning-page { scroll-behavior: auto; } }

.learning-resource-cover {display:block;width:100%;height:auto;border-radius:10px;margin-bottom:16px;}

/* 首页和资料库共用更新日期、真实首屏卡片。 */
.learning-updated{font:600 .8rem/1.5 system-ui;color:var(--learning-accent,#126366);margin:10px 0}.learning-latest{margin:32px 0 48px}.learning-latest h3{font-size:1.6rem}.learning-latest .learning-resource{align-items:flex-start}.learning-latest .learning-resource>div{min-width:0;width:100%}.learning-latest .learning-resource>span{display:none}.learning-latest .learning-resource-cover{aspect-ratio:16/10;object-fit:contain;background:#f3f3ee}.learning-latest .learning-library-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.learning-latest .learning-heading{align-items:center;gap:16px}.learning-latest .learning-heading a{font-size:.9rem}@media(max-width:900px){.learning-latest .learning-library-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:600px){.learning-latest .learning-library-grid{grid-template-columns:1fr}.learning-latest .learning-heading a{display:inline-block;margin-top:8px}}