.portfolio-course-library {
  max-width: var(--page);
  scroll-margin-top: 96px;
  margin: 0 auto 24px;
  padding: 62px 28px 78px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.portfolio-course-library .course-library-header {
  display: grid;
  grid-template-columns: minmax(0,1.2fr) minmax(360px,.8fr);
  gap: 42px;
  align-items: end;
  margin-bottom: 24px;
}
.portfolio-course-library .course-library-copy > p { margin: 0 0 10px; color: var(--accent); font-size: 10px; font-weight: 700; letter-spacing: .13em; }
.portfolio-course-library .course-library-copy h2 { margin: 0; color: var(--ink); font-size: 23px; font-weight: 680; line-height: 1.45; }
.portfolio-course-library .course-library-copy > span { display: block; max-width: 650px; margin-top: 11px; color: #68716e; font-size: 12px; line-height: 1.75; }
.portfolio-course-library .course-library-summary { display: grid; grid-template-columns: repeat(3,1fr); margin: 0; padding: 0 0 3px; }
.portfolio-course-library .course-library-summary > div { padding: 0 16px; border-left: 1px solid var(--line); }
.portfolio-course-library .course-library-summary dt { color: var(--ink); font-size: 19px; font-weight: 720; line-height: 1.25; }
.portfolio-course-library .course-library-summary dd { margin: 4px 0 0; color: #7a817e; font-size: 9.5px; line-height: 1.45; }
.portfolio-course-library .course-card-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 16px; }
.portfolio-course-library .course-card { --course-tint:#edf1ec; --course-accent:#6f7b59; display: flex; min-width: 0; flex-direction: column; overflow: hidden; border: 1px solid #ddd6cb; border-radius: 8px; background: rgba(255,253,250,.72); box-shadow: 0 10px 28px rgba(11,47,75,.045); transition: transform .2s ease,border-color .2s ease,box-shadow .2s ease; }
.portfolio-course-library .course-card:hover,.portfolio-course-library .course-card:focus-visible { border-color: color-mix(in srgb,var(--course-accent) 42%,var(--line)); box-shadow: 0 16px 34px rgba(11,47,75,.08); outline: none; transform: translateY(-3px); }
.portfolio-course-library .course-card > header { display: grid; min-height: 126px; grid-template-columns: 34px minmax(0,1fr) auto; gap: 10px; align-items: start; padding: 20px 18px; background: var(--course-tint); }
.portfolio-course-library .course-card-index { display: grid; width: 30px; height: 30px; place-items: center; border: 1px solid color-mix(in srgb,var(--course-accent) 35%,transparent); border-radius: 50%; color: var(--course-accent); font-size: 10px; font-weight: 700; }
.portfolio-course-library .course-card header p { margin: 1px 0 5px; color: var(--course-accent); font-size: 9px; font-weight: 700; letter-spacing: .1em; }
.portfolio-course-library .course-card h3 { margin: 0; color: var(--ink); font-size: 17px; font-weight: 680; line-height: 1.4; }
.portfolio-course-library .course-card header > strong { color: var(--course-accent); font-size: 11px; font-weight: 700; white-space: nowrap; }
.portfolio-course-library .course-card-lead { min-height: 69px; margin: 0; padding: 16px 18px 13px; color: #626c69; font-size: 11px; line-height: 1.7; }
.portfolio-course-library .course-card > ul { display: grid; gap: 8px; min-height: 91px; margin: 0 18px; padding: 13px 0 14px; border-top: 1px solid var(--line); list-style: none; }
.portfolio-course-library .course-card > ul li { position: relative; padding-left: 13px; color: #43504d; font-size: 10.5px; line-height: 1.55; }
.portfolio-course-library .course-card > ul li::before { position: absolute; top: .7em; left: 0; width: 4px; height: 4px; border-radius: 50%; background: var(--course-accent); content: ""; }
.portfolio-course-library .course-card > footer { display: flex; flex-wrap: wrap; gap: 6px; padding: 0 18px 18px; }
.portfolio-course-library .course-card > footer span { padding: 3px 8px; border: 1px solid color-mix(in srgb,var(--course-accent) 22%,transparent); border-radius: 999px; color: var(--course-accent); background: color-mix(in srgb,var(--course-tint) 62%,#fff); font-size: 9px; line-height: 1.35; }
.portfolio-course-library .course-card-cta { display: flex; align-items: center; justify-content: space-between; margin-top: auto; padding: 0 18px 17px; color: var(--course-accent); font-size: 10px; font-weight: 700; letter-spacing: .04em; }
.portfolio-course-library .course-card-cta .material-symbols-rounded { font-size: 17px; transition: transform .2s ease; }
.portfolio-course-library .course-card:hover .course-card-cta .material-symbols-rounded { transform: translateX(4px); }
.portfolio-course-library .course-card--keyword { --course-tint:#f5e6da; --course-accent:#b64f25; }
.portfolio-course-library .course-card--caidao { --course-tint:#e6eef4; --course-accent:#315f7e; }
.portfolio-course-library .course-card--qa { --course-tint:#e7eee7; --course-accent:#55745d; }
.portfolio-course-library .course-card--writing { --course-tint:#f2eadc; --course-accent:#916b33; }
.portfolio-course-library .course-card--zhihu { --course-tint:#e8ecf3; --course-accent:#566b8a; }
.portfolio-course-library .course-card--overseas { --course-tint:#efebe6; --course-accent:#716b64; }

@media (max-width:900px) {
  .portfolio-course-library .course-library-header { grid-template-columns: 1fr; gap: 24px; }
  .portfolio-course-library .course-card-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
}
@media (max-width:700px) {
  .portfolio-course-library { margin: 0 18px 18px; padding: 44px 0 54px; }
  .portfolio-course-library .course-library-header { margin-bottom: 18px; }
  .portfolio-course-library .course-library-copy h2 { font-size: 20px; }
  .portfolio-course-library .course-library-summary > div { padding: 0 9px; }
  .portfolio-course-library .course-library-summary dt { font-size: 16px; }
  .portfolio-course-library .course-library-summary dd { font-size: 8.5px; }
  .portfolio-course-library .course-card-grid { grid-template-columns: 1fr; gap: 12px; }
  .portfolio-course-library .course-card > header { min-height: 108px; padding: 17px 15px; }
  .portfolio-course-library .course-card-lead { min-height: 0; padding: 14px 15px 11px; }
  .portfolio-course-library .course-card > ul { min-height: 0; margin: 0 15px; padding: 11px 0 12px; }
  .portfolio-course-library .course-card > footer { padding: 0 15px 15px; }
  .portfolio-course-library .course-card-cta { padding: 0 15px 15px; }
}