/* HAI VU PIANO ACADEMY — PHUONG PHAP LUYEN TAP V44
   Mirrors the compact academic rhythm approved in Lich su am nhac.
   No marketing-style article count in the hero.
*/
body.hv44-practice-page{
  --hv44-ink:#18384f;
  --hv44-muted:#647681;
  --hv44-line:rgba(24,56,79,.12);
  --hv44-gold:#9a7040;
  --hv44-soft:#fbfaf7;
}
.hv44-main{color:var(--hv44-ink);background:#fff}
.hv44-wrap{width:min(1220px,calc(100% - 48px));margin-inline:auto}

.hv44-hero{
  padding:38px 0 28px;
  background:linear-gradient(90deg,#fbfaf6 0%,#f7fafb 100%);
  border-bottom:1px solid rgba(24,56,79,.07);
}
.hv44-eyebrow{
  display:block;margin-bottom:10px;color:var(--hv44-gold);
  font-size:12px;font-weight:650;letter-spacing:.055em
}
.hv44-hero-grid{
  display:grid;grid-template-columns:minmax(0,1.08fr) minmax(270px,.64fr);
  gap:58px;align-items:end
}
.hv44-hero h1{
  margin:0 0 13px;max-width:760px;
  font-size:clamp(40px,3.6vw,48px);line-height:1.08;
  letter-spacing:-.032em;font-weight:610
}
.hv44-hero p{
  max-width:840px;margin:0;color:var(--hv44-muted);
  font-size:17px;line-height:1.66
}
.hv44-summary{
  padding-left:22px;border-left:1px solid var(--hv44-line)
}
.hv44-summary strong{
  display:block;margin-bottom:9px;font-size:22px;font-weight:620;letter-spacing:-.018em
}
.hv44-summary span{
  display:block;color:var(--hv44-muted);font-size:14px;line-height:1.62
}

.hv44-controls{
  border-bottom:1px solid rgba(24,56,79,.08);
  background:#fff
}
.hv44-controls-inner{
  width:min(1220px,calc(100% - 48px));
  margin-inline:auto;padding:15px 0 14px
}
.hv44-control-top{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(310px,390px);
  gap:16px;align-items:end
}
.hv44-field label{
  display:block;margin-bottom:6px;color:#758690;
  font-size:11px;font-weight:650;letter-spacing:.055em
}
.hv44-search,.hv44-select{
  width:100%;min-height:44px;padding:0 14px;
  border:1px solid rgba(24,56,79,.16);border-radius:9px;
  background:#fff;color:var(--hv44-ink);font:inherit;font-size:15px;outline:none
}
.hv44-search:focus,.hv44-select:focus{
  border-color:rgba(18,63,91,.42);box-shadow:0 0 0 3px rgba(18,63,91,.05)
}
.hv44-partbar{
  display:flex;justify-content:space-between;align-items:center;gap:18px;
  margin-top:10px;padding-top:10px;border-top:1px solid rgba(24,56,79,.08)
}
.hv44-current{min-width:0}
.hv44-current small{
  display:block;margin-bottom:3px;color:var(--hv44-gold);
  font-size:11px;font-weight:650;letter-spacing:.05em
}
.hv44-current strong{
  display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  color:var(--hv44-ink);font-size:15px;font-weight:600
}
.hv44-part-actions{display:flex;gap:8px;flex:0 0 auto}
.hv44-part-btn{
  min-height:38px;padding:0 13px;border:1px solid rgba(24,56,79,.15);
  border-radius:999px;background:#fff;color:var(--hv44-ink);
  font:inherit;font-size:12px;font-weight:600;cursor:pointer
}
.hv44-part-btn:disabled{opacity:.38;cursor:not-allowed}

.hv44-index{padding:34px 0 88px}
.hv44-part{
  display:grid;grid-template-columns:310px minmax(0,1fr);
  gap:62px;padding:0 0 64px
}
.hv44-part[hidden]{display:none!important}
.hv44-part.hv44-active{display:grid!important}
.hv44-part-meta{align-self:start}
.hv44-part-no{
  display:block;margin-bottom:8px;color:var(--hv44-gold);
  font-size:12px;font-weight:650;letter-spacing:.05em
}
.hv44-part h2{
  margin:0 0 11px;font-size:30px;line-height:1.21;
  letter-spacing:-.022em;font-weight:610
}
.hv44-part-intro{
  margin:0;color:#536b7a;font-size:16px;line-height:1.72
}
.hv44-list{
  display:grid;grid-template-columns:1fr 1fr;column-gap:34px
}
.hv44-item{border-bottom:1px solid rgba(24,56,79,.1)}
.hv44-item a{
  display:grid;grid-template-columns:42px 1fr 18px;gap:12px;align-items:center;
  min-height:72px;padding:10px 0;color:var(--hv44-ink);text-decoration:none
}
.hv44-item a:hover .hv44-item-title{color:#0d547e}
.hv44-num{
  color:var(--hv44-gold);font-size:13px;font-weight:650;font-variant-numeric:tabular-nums
}
.hv44-item-title{font-size:17px;line-height:1.46;font-weight:560}
.hv44-arrow{color:#8da0aa}
.hv44-empty{
  display:none;padding:28px 0;color:var(--hv44-muted);
  font-size:16px;line-height:1.65
}

/* Article — same comfortable width relationship as the approved history articles. */
.hv44-article-hero{
  padding:28px 0 22px;background:#fbfaf7;
  border-bottom:1px solid rgba(24,56,79,.08)
}
.hv44-breadcrumb{
  display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px;
  color:#788993;font-size:12px
}
.hv44-breadcrumb a{color:inherit;text-decoration:none}
.hv44-article-grid{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;
  gap:64px;align-items:end
}
.hv44-article-no{
  display:block;margin-bottom:8px;color:var(--hv44-gold);
  font-size:12px;font-weight:650;letter-spacing:.05em
}
.hv44-article-hero h1{
  max-width:870px;margin:0;
  font-size:clamp(38px,3.35vw,46px);
  line-height:1.08;letter-spacing:-.03em;font-weight:610
}
.hv44-context{
  padding-left:22px;border-left:1px solid var(--hv44-line);
  color:var(--hv44-muted);font-size:14px;line-height:1.66
}
.hv44-context strong{
  display:block;margin-bottom:7px;color:var(--hv44-ink);
  font-size:14px;font-weight:620
}
.hv44-article-layout{
  display:grid;grid-template-columns:minmax(0,780px) 300px;
  gap:74px;justify-content:space-between;padding:30px 0 92px
}
.hv44-copy::before{
  content:"";display:block;width:54px;height:1px;margin-bottom:25px;background:#b89161
}
.hv44-copy p{
  margin:0 0 26px;color:#2f4a5b;
  font-size:18.5px;line-height:1.82
}
.hv44-copy p:last-child{margin-bottom:0}
.hv44-copy .hv44-conclusion-label{
  margin-top:34px;margin-bottom:12px;color:var(--hv44-gold);
  font-size:13px;font-weight:700;letter-spacing:.06em
}
.hv44-aside{align-self:start;position:sticky;top:96px}
.hv44-aside-title{
  margin-bottom:12px;color:var(--hv44-gold);
  font-size:11px;font-weight:650;letter-spacing:.06em
}
.hv44-aside a{
  display:grid;grid-template-columns:28px 1fr;gap:9px;padding:9px 0;
  border-bottom:1px solid rgba(24,56,79,.08);color:#6e7e87;
  text-decoration:none;font-size:13.5px;line-height:1.46
}
.hv44-aside a.current{color:var(--hv44-ink);font-weight:620}
.hv44-aside a span:first-child{color:#a17a4c;font-variant-numeric:tabular-nums}
.hv44-prevnext{
  display:grid;grid-template-columns:1fr 1fr;gap:18px;
  margin-top:44px;padding-top:21px;border-top:1px solid var(--hv44-line)
}
.hv44-prevnext a{padding:13px 0;color:var(--hv44-ink);text-decoration:none}
.hv44-prevnext a:last-child{text-align:right}
.hv44-prevnext small{display:block;margin-bottom:5px;color:#83929b;font-size:11px}
.hv44-prevnext strong{font-size:15px;line-height:1.48;font-weight:600}

@media (min-width:980px) and (max-height:920px){
  .hv44-hero{padding:30px 0 22px}
  .hv44-hero h1{font-size:clamp(38px,3.3vw,44px)}
  .hv44-controls-inner{padding-top:12px;padding-bottom:11px}
  .hv44-index{padding-top:26px}
  .hv44-part{gap:54px}
  .hv44-item a{min-height:66px;padding:8px 0}
  .hv44-article-hero{padding:24px 0 19px}
  .hv44-article-layout{padding-top:26px}
}
@media(max-width:980px){
  .hv44-hero-grid,.hv44-article-grid{grid-template-columns:1fr;gap:24px}
  .hv44-summary,.hv44-context{padding-left:0;border-left:0;border-top:1px solid var(--hv44-line);padding-top:18px}
  .hv44-part{grid-template-columns:1fr;gap:28px}
  .hv44-article-layout{grid-template-columns:1fr;gap:42px}
  .hv44-aside{position:static}
}
@media(max-width:720px){
  .hv44-wrap,.hv44-controls-inner{width:min(100% - 32px,1220px)}
  .hv44-hero{padding:34px 0 28px}
  .hv44-hero h1,.hv44-article-hero h1{font-size:clamp(36px,10vw,42px)}
  .hv44-control-top{grid-template-columns:1fr}
  .hv44-partbar{align-items:flex-start;flex-direction:column}
  .hv44-current strong{white-space:normal}
  .hv44-index{padding:34px 0 72px}
  .hv44-part h2{font-size:28px}
  .hv44-list{grid-template-columns:1fr}
  .hv44-item-title{font-size:16.5px}
  .hv44-article-hero{padding:34px 0 28px}
  .hv44-article-layout{padding:38px 0 72px}
  .hv44-copy p{font-size:17.5px;line-height:1.78}
  .hv44-prevnext{grid-template-columns:1fr}
  .hv44-prevnext a:last-child{text-align:left}
}