body[data-page="quick-memory"] main.knowledge-page.shell{
  width:min(1500px,calc(100% - clamp(28px,3vw,52px)));
}
body[data-page="quick-memory"] .knowledge-part-nav-head h2{font-size:clamp(40px,4.4vw,54px)}
body[data-page="quick-memory"] .knowledge-part-nav-head p{font-size:21px}
body[data-page="quick-memory"] .knowledge-part-copy strong{font-size:30px!important}
body[data-page="quick-memory"] .knowledge-part-copy small{font-size:22.5px!important;line-height:1.72!important}
body[data-page="quick-memory"] .knowledge-detail-head h2{font-size:clamp(50px,5.35vw,64px)!important}
body[data-page="quick-memory"] .knowledge-detail-head p{max-width:980px;font-size:27.5px!important}
body[data-page="quick-memory"] .knowledge-section-title h3{font-size:37px}
body[data-page="quick-memory"] .knowledge-section-title>span{font-size:21px}

.knowledge-content-section{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(290px,320px);
  column-gap:26px;
  align-items:start;
}
.knowledge-section-title{grid-column:1;grid-row:1}
.knowledge-lesson-tools{
  grid-column:2;
  grid-row:2 / 4;
  align-self:start;
  position:sticky;
  top:88px;
  z-index:5;
  display:grid;
  grid-template-columns:minmax(0,1fr);
  align-items:stretch;
  gap:12px;
  max-height:calc(100vh - 108px);
  margin:0 0 16px;
  padding:16px;
  overflow:auto;
  overscroll-behavior:contain;
  border:1px solid rgba(201,216,206,.94);
  border-radius:18px;
  background:rgba(250,252,250,.94);
  box-shadow:0 12px 30px rgba(27,52,39,.09);
  backdrop-filter:blur(14px);
}
.knowledge-tool-field{display:grid;gap:6px;min-width:0}
.knowledge-tool-field>span{color:#617168;font-size:18px;font-weight:820;letter-spacing:.06em}
.knowledge-tool-field input,.knowledge-tool-field select{width:100%;min-height:46px;background:#fff;font-size:20px}
.knowledge-resume-button{width:100%;min-height:42px;max-width:none;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.knowledge-lesson-tool-status{
  grid-column:1;
  display:grid;
  gap:4px;
  min-height:18px;
  color:#77857d;
  font-size:19.5px;
}
.progressive-lesson-list{grid-column:1;grid-row:2;display:grid;gap:10px}
.progressive-lesson{
  scroll-margin-top:178px;
  content-visibility:visible!important;
  contain-intrinsic-size:none!important;
}
.knowledge-lesson-summary{
  display:grid!important;
  grid-template-columns:42px minmax(0,1fr) auto 20px;
  align-items:center!important;
  gap:13px;
  min-height:72px;
  padding:13px 16px!important;
  cursor:pointer;
  list-style:none;
  user-select:none;
}
.knowledge-lesson-summary::-webkit-details-marker{display:none}
.knowledge-lesson-summary:hover{background:linear-gradient(145deg,#e8f3ec,#f8fbf9)!important}
.knowledge-lesson-order{
  display:grid;
  place-items:center;
  width:38px;
  height:38px;
  border:1px solid #cfe0d5;
  border-radius:12px;
  background:#fff;
  color:var(--brand-deep);
  font-size:16.5px;
  font-weight:850;
}
.knowledge-lesson-summary-copy{display:grid;gap:3px;min-width:0}
.knowledge-lesson-summary-copy strong{font-size:30px;letter-spacing:-.025em}
.knowledge-lesson-summary-copy small{overflow:hidden;color:#738179;font-size:21.5px;line-height:1.45;text-overflow:ellipsis;white-space:nowrap}
.knowledge-lesson-count{color:#7c8a82;font-size:19.5px;white-space:nowrap}
.knowledge-lesson-chevron{color:#7f8d85;font-size:30px;transition:transform .14s ease}
.progressive-lesson[open] .knowledge-lesson-chevron{transform:rotate(180deg)}
.progressive-lesson[open] .knowledge-lesson-summary{border-bottom:1px solid #dce8df}
.knowledge-lesson-panel{background:#fff}
.knowledge-lesson-panel:empty{display:none}
.knowledge-lesson-sentinel{
  grid-column:1;
  grid-row:3;
  display:grid;
  place-items:center;
  min-height:88px;
  padding:18px;
}
.knowledge-lesson-sentinel.is-complete{min-height:26px;padding:8px}
.knowledge-lesson-sentinel.is-complete::after{content:"已经看到本章当前加载的全部课次";color:#8a978f;font-size:18px}
.knowledge-lesson-sentinel.is-complete .secondary{display:none}
.knowledge-empty-state{grid-column:1/-1}

@media(max-width:1000px){
  .knowledge-content-section{display:block}
  .knowledge-lesson-tools{
    position:relative;
    top:auto;
    z-index:auto;
    grid-template-columns:minmax(220px,1.15fr) minmax(180px,.85fr) auto;
    align-items:end;
    max-height:none;
    margin:0 0 16px;
    padding:14px;
    overflow:visible;
  }
  .knowledge-resume-button{width:auto;max-width:250px}
  .knowledge-lesson-tool-status{grid-column:1/-1;display:flex;align-items:center;justify-content:space-between;gap:14px}
}

@media(max-width:900px){
  .knowledge-lesson-tools{grid-template-columns:1fr 1fr}
  .knowledge-resume-button{grid-column:1/-1;max-width:none;width:100%}
}

@media(max-width:640px){
  .knowledge-lesson-tools{grid-template-columns:1fr;padding:12px;border-radius:16px}
  .knowledge-lesson-tool-status{display:grid;gap:3px}
  .knowledge-lesson-summary{grid-template-columns:38px minmax(0,1fr) auto;padding:11px 12px!important}
  .knowledge-lesson-order{width:34px;height:34px}
  .knowledge-lesson-count{grid-column:2;font-size:16.5px}
  .knowledge-lesson-chevron{grid-column:3;grid-row:1/3}
  .knowledge-lesson-summary-copy strong{font-size:25.5px}
  .progressive-lesson{scroll-margin-top:224px}
}

@media(prefers-reduced-motion:reduce){
  .knowledge-lesson-chevron{transition:none}
}

/* Full-width entry headers leave enough room for both accents and long IPA. */
.knowledge-lesson-panel .knowledge-word-list{
  margin:0;padding:18px;gap:16px;border:0;border-radius:0;background:#f6f9f7;
}
.knowledge-lesson-panel .knowledge-word-row{
  min-width:0;min-height:0;grid-template-columns:minmax(0,1fr);
  border:1px solid #dfe8e2;border-radius:16px;overflow:hidden;
}
.knowledge-lesson-panel .knowledge-word-meta{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:14px 24px;min-width:0;padding:20px 22px;
  border-right:0;border-bottom:1px solid #dfe8e2;
}
.knowledge-lesson-panel .knowledge-word-meta h4{
  margin:0;font-size:37.5px;line-height:1.2;min-width:0;max-width:100%;
}
.knowledge-audio-options{display:flex;flex-wrap:wrap;gap:10px;min-width:0;max-width:100%}
.knowledge-audio-options .knowledge-audio-button{
  display:flex;align-items:center;gap:9px;min-height:44px;min-width:0;max-width:100%;
  padding:8px 12px;border:1px solid #d5e2d9;border-radius:10px;
  background:#fff;color:#365a46;box-shadow:none;font-weight:500;text-align:left;
}
.knowledge-audio-button b{flex:none;font-size:13px;white-space:nowrap}
.knowledge-audio-button .knowledge-audio-ipa{
  min-width:0;font-family:Georgia,"Times New Roman",serif;font-size:21.5px;
  line-height:1.45;overflow-wrap:anywhere;
}
.knowledge-audio-button .pron-speaker-icon{flex:none;width:18px;height:18px}
.knowledge-audio-options .knowledge-audio-button:hover{background:#edf5f0;border-color:#8ab39b;transform:none}
.knowledge-audio-options .knowledge-audio-button:focus-visible{outline:3px solid #85b89b;outline-offset:3px}
.knowledge-audio-options .knowledge-audio-button.is-speaking{background:#24583f;border-color:#24583f;color:#fff}
.knowledge-lesson-panel .knowledge-word-body{padding:20px 22px;gap:14px;align-content:start}
.knowledge-lesson-panel .knowledge-book-line{grid-template-columns:52px minmax(0,1fr);gap:12px}
.knowledge-lesson-panel .knowledge-book-label{
  width:auto;min-height:28px;padding:5px 8px;white-space:nowrap;line-height:1.2;
}
.knowledge-lesson-panel .knowledge-book-line p{font-size:22px;line-height:1.75;overflow-wrap:anywhere}
.knowledge-lesson-panel .knowledge-book-line.translation p strong{font-size:20px}
.knowledge-lesson-panel .knowledge-book-line.example{padding:14px;border-radius:12px;background:#f6f8f7}
.knowledge-lesson-panel .knowledge-book-examples{gap:12px}
.knowledge-lesson-panel .knowledge-book-examples p{font-size:24px}
.knowledge-lesson-panel .knowledge-book-examples small{font-size:20px;line-height:1.65}
@media(max-width:900px){
  body[data-page="quick-memory"] main.knowledge-page.shell{width:min(100% - 28px,1500px)}
}
@media(max-width:640px){
  body[data-page="quick-memory"] main.knowledge-page.shell{width:min(100% - 20px,1500px)}
  .knowledge-lesson-panel .knowledge-word-list{padding:10px;gap:12px}
  .knowledge-lesson-panel .knowledge-word-meta{padding:16px;align-items:flex-start}
  .knowledge-lesson-panel .knowledge-word-meta h4{font-size:32px}
  .knowledge-audio-options{width:100%}
  .knowledge-audio-options .knowledge-audio-button{flex:1 1 180px}
  .knowledge-audio-button .knowledge-audio-ipa{flex:1}
  .knowledge-lesson-panel .knowledge-word-body{padding:16px}
  .knowledge-lesson-panel .knowledge-book-line{grid-template-columns:minmax(0,1fr);gap:6px}
  .knowledge-lesson-panel .knowledge-book-label{justify-self:start}
  .knowledge-lesson-panel .knowledge-book-line p{font-size:19.5px}
  .knowledge-lesson-panel .knowledge-book-examples p{font-size:21.5px}
  .knowledge-lesson-panel .knowledge-book-examples small{font-size:18px}
}