:root{
  --bg:#091017;--bg2:#0d151d;--panel:#111b25;--panel2:#16232f;--panel3:#1b2b39;
  --line:#2a3d4d;--line2:#36566b;--text:#f1f6f8;--muted:#9db0bd;--blue:#55b2e0;
  --cyan:#6ad3d8;--amber:#e6b35f;--red:#ef7a7a;--green:#73d0a4;--shadow:0 18px 50px rgba(0,0,0,.28);
  --radius:16px;--sidebar:276px;--mobile-nav:106px;
}
*{box-sizing:border-box;min-width:0}
html{background:var(--bg);scroll-behavior:smooth}
body{margin:0;min-height:100vh;background:var(--bg);color:var(--text);
  font-family:"Segoe UI Variable","Segoe UI",-apple-system,BlinkMacSystemFont,sans-serif;
  overflow-x:hidden}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;white-space:normal;overflow-wrap:anywhere}
a{color:#8fd4f4;overflow-wrap:anywhere}
.app{position:relative;display:grid;grid-template-columns:var(--sidebar) minmax(0,1fr);min-height:100vh}
.sidebar{position:sticky;top:0;height:100vh;padding:18px 14px;border-right:1px solid var(--line);background:rgba(11,18,25,.94);overflow-y:auto;overflow-x:hidden;scrollbar-gutter:stable;z-index:30}
.brand{padding:0 0 22px;display:flex;justify-content:center;align-items:center}

.brand-logo{display:block;width:238px;max-width:100%;height:auto;object-fit:contain;filter:drop-shadow(0 15px 24px rgba(0,0,0,.42))}


.nav{display:grid;gap:6px}
.nav-button{width:100%;min-height:48px;border:1px solid transparent;background:transparent;color:var(--muted);padding:10px 11px;border-radius:12px;text-align:left;display:flex;align-items:center;gap:11px;transition:background-color .18s ease,border-color .18s ease,color .18s ease}
.nav-button:hover,.nav-button.active{background:var(--panel2);border-color:var(--line);color:var(--text);transform:translateX(2px)}
.nav-button svg{width:19px;height:19px;flex:0 0 auto}
.nav-button span{line-height:1.25}
.sidebar-tools{margin-top:18px;padding:16px 8px 4px;border-top:1px solid var(--line);display:grid;gap:10px}
.main{min-width:0}
.topbar{position:sticky;top:0;z-index:25;display:grid;grid-template-columns:minmax(220px,1fr) minmax(240px,430px) minmax(190px,260px);gap:12px;align-items:center;padding:13px 20px;border-bottom:1px solid var(--line);background:rgba(9,16,23,.91);backdrop-filter:none}

.titlebar h2{font-size:17px;margin:0 0 2px;letter-spacing:-.01em}
.titlebar small{color:var(--muted);font-size:12px}
.field,.select,.searchbox{display:block;width:100%;min-height:44px;border:1px solid var(--line);border-radius:11px;background:#0d1720;padding:10px 12px;outline:none;box-shadow:inset 0 1px rgba(255,255,255,.02)}
.field:focus,.select:focus,.searchbox:focus{border-color:var(--blue);box-shadow:none}
.content{position:relative;max-width:1680px;margin:0 auto;padding:22px}
.screen{display:none}.screen.active{display:block;animation:fade .18s ease}
@keyframes fade{from{opacity:.55;transform:translateY(3px)}to{opacity:1;transform:none}}
.screen-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:18px}
.screen-head h3{font-size:clamp(23px,2.2vw,30px);line-height:1.15;letter-spacing:-.025em;margin:0 0 7px}
.screen-head p{max-width:860px;margin:0;color:var(--muted);font-size:14px;line-height:1.55}
.counter{flex:0 0 auto;color:var(--muted);font-size:13px;border:1px solid var(--line);border-radius:999px;padding:7px 10px;background:rgba(16,27,37,.72)}
.panel{background:#101c25;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.panel-pad{padding:16px}
.filters{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(210px,100%),1fr));gap:10px;margin-bottom:16px}
.cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.card{position:relative;display:flex;flex-direction:column;min-height:230px;padding:17px;border:1px solid var(--line);border-radius:var(--radius);background:#101c25;box-shadow:0 12px 32px rgba(0,0,0,.2);overflow:hidden}
.card h4{position:relative;margin:0 0 10px;font-size:17px;line-height:1.32;letter-spacing:-.01em;overflow-wrap:anywhere}
.card-summary{position:relative;color:#d6e0e6;font-size:13.5px;line-height:1.55;margin:10px 0 14px;overflow-wrap:anywhere}
.meta{position:relative;display:flex;flex-wrap:wrap;gap:6px;margin-bottom:4px}
.badge{display:inline-flex;align-items:center;max-width:100%;padding:4px 8px;border:1px solid var(--line);border-radius:999px;background:rgba(11,20,28,.55);color:var(--muted);font-size:12px;line-height:1.25;overflow-wrap:anywhere}
.badge.blue{color:#a6ddf5;border-color:#2d6581;background:#102836}.badge.green{color:#a9e7c6;border-color:#2d6a50;background:#102b20}.badge.amber{color:#f1ca87;border-color:#72552b;background:#2b2112}.badge.red{color:#ffaaaa;border-color:#743d42;background:#30171b}
.card-actions{position:relative;margin-top:auto;display:flex;justify-content:flex-end;gap:8px;flex-wrap:wrap}
.btn{min-height:44px;border:1px solid var(--line);border-radius:10px;background:var(--panel2);padding:8px 12px;line-height:1.25;transition:background-color .16s ease,border-color .16s ease,color .16s ease}
.btn:hover{border-color:var(--line2);transform:translateY(-1px)}
.btn.primary{background:#1b6283;border-color:#3288ae;color:#fff}.btn.ghost{background:transparent}.btn.danger{background:#492229;border-color:#7f3841}.btn.icon{display:inline-grid;place-items:center;width:44px;min-width:44px;padding:0}.btn svg{width:18px;height:18px}
.empty{padding:38px;text-align:center;color:var(--muted);grid-column:1/-1}
.pagination{display:flex;justify-content:center;align-items:center;gap:8px;margin:18px 0 2px;flex-wrap:wrap}.pagination .btn{min-width:44px}
.search-layout,.split-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,320px);gap:16px;align-items:start}
.sticky{position:sticky;top:88px}
.suggestions{display:flex;gap:7px;flex-wrap:wrap;margin-top:10px}
.recent-list{display:grid;gap:7px}.recent-list button{text-align:left}
.kpis{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;margin-bottom:16px}
.kpi{padding:16px}.kpi b{display:block;font-size:25px;line-height:1;margin-bottom:8px}.kpi span{color:var(--muted);font-size:12.5px;line-height:1.35}
.chart-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.chart-box{padding:16px}.chart-box h4{margin:0 0 12px}.chart-box canvas{display:block;width:100%;height:270px}
.profile-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(210px,100%),1fr));gap:10px}
.warning{margin-top:12px;padding:12px 13px;border:1px solid #76552d;border-radius:11px;background:#2a2012;color:#f0cf94;line-height:1.5;overflow-wrap:anywhere}
.score{width:84px;height:84px;border-radius:50%;display:grid;place-items:center;border:5px solid var(--green);font-size:27px;font-weight:750;margin-bottom:8px}.score.mid{border-color:var(--amber)}.score.high{border-color:var(--red)}
.check-sections{display:grid;gap:16px;margin-top:16px}.check-group{overflow:hidden}.check-group-head{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:15px 16px;border-bottom:1px solid var(--line);background:rgba(26,43,57,.42)}.check-group-head h4{margin:0;font-size:15px;line-height:1.35}.section-count{flex:0 0 auto;color:var(--muted);font-size:12px;font-weight:600;white-space:nowrap}.check-list{display:grid;gap:10px;padding:12px}.check-row{display:grid;grid-template-columns:38px minmax(0,1fr) minmax(190px,230px);gap:13px;padding:14px;border:1px solid rgba(54,86,107,.72);border-radius:13px;background:#0e1a23;align-items:start;transition:border-color .18s ease,background-color .18s ease}.check-row[data-state="Норма"]{border-color:rgba(115,208,164,.5);background:#10251f}.check-row[data-state="Требует внимания"]{border-color:rgba(230,179,95,.58);background:#282014}.check-row[data-state="Серьёзная проблема"]{border-color:rgba(239,122,122,.62);background:#2b181c}.check-index{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;border:1px solid var(--line2);background:#0d1720;color:var(--cyan);font-weight:800;font-size:12px}.check-copy{min-width:0}.check-row h5{margin:0 0 7px;font-size:14px;line-height:1.4}.check-row p{margin:0;color:var(--muted);font-size:12.5px;line-height:1.5}.check-row .select{min-height:44px}.check-source{margin-top:10px}.progress-track{height:8px;border-radius:999px;background:#0a1219;border:1px solid var(--line);overflow:hidden;margin:10px 0 6px}.progress-track>span{display:block;height:100%;width:0;background:var(--blue);transition:width .2s ease}.profile-result{margin-top:12px;padding:13px 14px;border:1px solid var(--line);border-radius:12px;background:#0d1720}.profile-result b{display:block;margin-bottom:5px}.profile-result ul{margin:8px 0 0;padding-left:18px;color:var(--muted);font-size:12.5px;line-height:1.5}.profile-result.good{border-color:rgba(115,208,164,.48)}.profile-result.warn{border-color:rgba(230,179,95,.58)}.profile-result.bad{border-color:rgba(239,122,122,.62)}
.compare{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr) auto;gap:10px;align-items:center}.compat-result{margin-top:12px;padding:12px;border:1px solid var(--line);border-radius:11px;background:#0d1720;line-height:1.5}
.drawer-backdrop{position:fixed;inset:0;z-index:70;background:rgba(0,0,0,.58);opacity:0;pointer-events:none;transition:opacity .2s}.drawer-backdrop.open{opacity:1;pointer-events:auto}.drawer{position:fixed;z-index:75;top:0;right:0;width:min(720px,94vw);height:100dvh;background:#0c141c;border-left:1px solid var(--line);box-shadow:-20px 0 60px rgba(0,0,0,.45);transform:translateX(102%);transition:transform .22s ease;display:flex;flex-direction:column}.drawer.open{transform:none}.drawer-head{display:flex;align-items:flex-start;gap:12px;padding:17px;border-bottom:1px solid var(--line)}.drawer-head h3{margin:0;font-size:20px;line-height:1.3;overflow-wrap:anywhere}.drawer-head .btn{margin-left:auto;flex:0 0 auto}.drawer-body{padding:17px;overflow:auto;overscroll-behavior:contain}.detail-block{margin-bottom:16px}.detail-block h4{margin:0 0 8px;font-size:14px;color:#b9ceda}.detail-block p,.detail-block li{font-size:13.5px;line-height:1.6;overflow-wrap:anywhere}.detail-block ul{margin:0;padding-left:20px}.source-message{padding:12px;border:1px solid var(--line);border-radius:11px;background:#101b24;margin-bottom:8px}.source-meta{display:flex;gap:8px;flex-wrap:wrap;color:var(--muted);font-size:12px;margin-bottom:7px}.source-text{white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-word;font-size:13px;line-height:1.55}.source-text a{word-break:break-all}
mark{background:#755b20;color:#fff1be;border-radius:3px;padding:0 2px}
.mobile-nav{display:none}
.toast{position:fixed;z-index:100;right:18px;bottom:18px;max-width:min(360px,calc(100vw - 36px));padding:11px 13px;border:1px solid var(--line2);border-radius:11px;background:#152631;box-shadow:var(--shadow);opacity:0;transform:translateY(8px);pointer-events:none;transition:opacity .2s ease,transform .2s ease}.toast.show{opacity:1;transform:none}
.small{font-size:12px}.muted{color:var(--muted)}
@media(max-width:1120px){.cards{grid-template-columns:1fr}.topbar{grid-template-columns:minmax(190px,1fr) minmax(220px,1.2fr) minmax(180px,.8fr)}.chart-grid{grid-template-columns:1fr}}
@media(max-width:820px){
  :root{--mobile-nav:112px}.app{display:block}.sidebar{display:none}.main{width:100%}.topbar{grid-template-columns:minmax(0,1fr);gap:9px;padding:10px 12px}.titlebar{display:none}.content{padding:16px 12px calc(var(--mobile-nav) + 16px)}.screen-head{align-items:flex-start;flex-direction:column}.counter{align-self:flex-start}.search-layout,.split-layout{grid-template-columns:1fr}.sticky{position:static}.mobile-nav{position:fixed;z-index:50;left:0;right:0;bottom:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));height:var(--mobile-nav);padding:6px max(6px,env(safe-area-inset-right)) max(6px,env(safe-area-inset-bottom)) max(6px,env(safe-area-inset-left));border-top:1px solid var(--line);background:rgba(9,16,23,.96);backdrop-filter:none}.mobile-nav .nav-button{min-height:47px;padding:4px 5px;justify-content:center;flex-direction:column;gap:2px;text-align:center;border-radius:9px;font-size:12px;line-height:1.1}.mobile-nav .nav-button:hover,.mobile-nav .nav-button.active{transform:none}.mobile-nav .nav-button svg{width:17px;height:17px}.check-row{grid-template-columns:34px minmax(0,1fr)}.check-row .select{grid-column:1/-1}.check-group-head{align-items:flex-start}.compare{grid-template-columns:1fr}.drawer{width:100vw}.drawer-head{padding-top:max(17px,env(safe-area-inset-top))}.toast{bottom:calc(var(--mobile-nav) + 12px)}
}
@media(max-width:430px){.content{padding-left:10px;padding-right:10px}.panel-pad,.card{padding:14px}.screen-head h3{font-size:23px}.chart-box canvas{height:240px}.btn{padding:8px 10px}.card-actions{justify-content:stretch}.card-actions .btn:not(.icon){flex:1}.source-message{padding:10px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}


.card,.panel,.detail-block,.source-message,.check-row,.screen-head,.filters{min-width:0}
.card h4,.card-summary,.source-text,.detail-block,.check-row h5,.check-row p,.badge,.btn,a{overflow-wrap:anywhere;word-break:normal}
.check-row>div{min-width:0}
@media(max-width:700px){.check-row{grid-template-columns:34px minmax(0,1fr)!important;padding:12px!important}.check-row .select{grid-column:1/-1;width:100%;max-width:100%}.check-group-head{padding:13px 14px}.check-list{padding:10px}.check-index{width:28px;height:28px}.profile-grid{grid-template-columns:minmax(0,1fr)!important}.split-layout{grid-template-columns:minmax(0,1fr)!important}.mobile-nav{display:grid!important;grid-template-columns:repeat(5,minmax(0,1fr));overflow:visible!important}.mobile-nav .nav-button{min-width:0!important;padding:8px 4px!important;font-size:12px!important}.mobile-nav .nav-button svg{width:18px;height:18px}}

:root{
  --bg:#080e14;
  --bg2:#0c141c;
  --panel:#111c26;
  --panel2:#162633;
  --panel3:#1a3040;
  --line:#263b4a;
  --line2:#35627a;
  --text:#f2f7f9;
  --muted:#9db2bf;
  --blue:#58b7e6;
  --cyan:#72d9dc;
  --shadow:0 18px 52px rgba(0,0,0,.25);
  --radius:15px;
}
.sidebar{
  padding:20px 15px;
  border-right-color:rgba(75,118,142,.42);
  background:#0b151e;
  box-shadow:none;
}


.nav{gap:7px}
.nav-button{position:relative;border-radius:11px}
.nav-button:hover,.nav-button.active{
  background:#173342;
  border-color:rgba(62,104,126,.72);
}
.main{min-width:0}
.content{max-width:1640px;padding:28px 30px 36px}
.screen-head{
  position:relative;
  align-items:center;
  margin-bottom:17px;
  padding:0 0 15px;
  border-bottom:1px solid rgba(61,94,112,.5);
}
.screen-head h3{font-size:clamp(24px,2vw,30px);margin-bottom:5px}
.screen-head p{color:#96acb9}
.counter{
  border-color:rgba(62,103,125,.72);
  background:#0c1720;
  color:#bdd0da;
}
.panel{
  border-color:rgba(48,76,93,.82);
  background:#101c25;
  box-shadow:0 16px 45px rgba(0,0,0,.22),inset 0 1px rgba(255,255,255,.025);
}
.filters{padding:13px;margin-bottom:15px}
.field,.select,.searchbox{
  border-color:rgba(51,83,102,.88);
  background:rgba(9,18,25,.92);
}
.card{
  min-height:222px;
  border-color:rgba(51,83,102,.82);
  background:#101c25;
  box-shadow:0 14px 36px rgba(0,0,0,.19),inset 0 1px rgba(255,255,255,.025);
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.card:hover{
  transform:translateY(-2px);
  border-color:rgba(68,120,146,.92);
  box-shadow:0 18px 42px rgba(0,0,0,.25);
}
.badge{background:rgba(8,17,24,.64)}
.btn.primary{
  background:#216f94;
  border-color:#3a91b7;
  box-shadow:0 7px 18px rgba(27,101,134,.18);
}
.btn.primary:hover{background:#287da4}
.check-group-head{background:#13232d}
.check-row{border-color:rgba(54,86,107,.68)}
.sticky{top:16px}
@media(max-width:820px){
  .content{padding:12px 12px calc(var(--mobile-nav) + 18px)}
  .screen-head{padding-left:14px}
  .card:hover{transform:none}
}
@media(max-width:430px){
  .content{padding-left:10px;padding-right:10px}
  .screen-head{margin-bottom:14px;padding-bottom:13px}
}

.nav-count{margin-left:auto;min-width:22px;height:22px;padding:0 6px;display:inline-flex;align-items:center;justify-content:center;border-radius:999px;background:var(--blue);color:#07131a;font-size:12px;font-weight:800;line-height:1}
.nav-count[hidden]{display:none}
@media(max-width:820px){.mobile-nav .nav-count{position:absolute;top:3px;right:8px;margin:0;min-width:18px;height:18px;padding:0 5px;font-size:12px}}


/* Final UX pass: keep the database intact, reduce simultaneous visual load. */
.filters-shell{padding:13px;margin-bottom:15px}
.filters-main{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(210px,100%),1fr));gap:10px;align-items:center}
.filters-main.search-first{grid-template-columns:minmax(260px,1.7fr) repeat(2,minmax(170px,.75fr))}
.filters-main.fault-main{grid-template-columns:minmax(280px,1.55fr) repeat(3,minmax(150px,.68fr))}
.filter-more{margin-top:10px;border-top:1px solid rgba(54,86,107,.55);padding-top:9px}
.filter-more>summary,.disclosure>summary{list-style:none;cursor:pointer;user-select:none}
.filter-more>summary::-webkit-details-marker,.disclosure>summary::-webkit-details-marker{display:none}
.filter-more>summary{display:inline-flex;align-items:center;gap:7px;color:#b9ceda;font-size:12.5px;font-weight:650;padding:5px 2px}
.filter-more>summary::before{content:'+';display:grid;place-items:center;width:20px;height:20px;border:1px solid var(--line);border-radius:7px;color:var(--cyan);font-size:14px;line-height:1}
.filter-more[open]>summary::before{content:'−'}
.filter-more-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(200px,100%),1fr));gap:10px;margin-top:9px}
.card{min-height:205px}
.card .meta{gap:5px;margin-bottom:2px}
.card-summary{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin:9px 0 12px}
.card-secondary{color:var(--muted);font-size:12px;line-height:1.45;margin:1px 0 7px;overflow-wrap:anywhere}
.card-secondary strong{color:#bfd0d9;font-weight:650}
.result-count{margin:0 0 10px;color:var(--muted);font-size:12.5px}
.disclosure{border:1px solid var(--line);border-radius:13px;background:rgba(13,23,32,.72);margin:12px 0;overflow:hidden}
.disclosure>summary{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 13px;color:#c7d6de;font-size:13px;font-weight:700}
.disclosure>summary::after{content:'+';flex:0 0 auto;color:var(--cyan);font-size:18px;font-weight:400}
.disclosure[open]>summary::after{content:'−'}
.disclosure-body{padding:0 13px 13px}
.disclosure .detail-block:last-child{margin-bottom:0}
.drawer-lead{padding:13px 14px;border:1px solid var(--line);border-radius:13px;background:#101c25;margin-bottom:14px}
.drawer-lead p{margin:10px 0 0;line-height:1.58}
.drawer-lead .small{display:block;margin-top:9px}
.source-disclosure>summary{color:#a9c7d6}
.source-disclosure .source-message{background:#0e1821}
.stats-intro{display:grid;grid-template-columns:repeat(auto-fit,minmax(185px,1fr));gap:10px;margin-bottom:14px}
.stats-intro .kpi{box-shadow:none}
.stats-intro .kpi b{font-size:23px}
.stat-lines{display:grid;gap:7px}
.stat-line{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px;align-items:baseline;padding:8px 0;border-bottom:1px solid rgba(54,86,107,.36);font-size:12.5px}
.stat-line:last-child{border-bottom:0}
.stat-line span{color:var(--muted)}
.stat-line b{font-size:13px}
.purchase-config{margin-bottom:16px}
.purchase-config>summary span{display:grid;gap:2px}
.purchase-config>summary small{font-weight:400;color:var(--muted)}
.purchase-config .profile-grid{margin-top:12px}
.quick-type{display:flex;gap:7px;flex-wrap:wrap;margin:0 0 12px}
.quick-type .btn.active{background:#183b4d;border-color:#35627a;color:#eaf6fb}
@media(max-width:900px){.filters-main.search-first,.filters-main.fault-main{grid-template-columns:1fr 1fr}.filters-main.search-first .searchbox,.filters-main.search-first .field{grid-column:1/-1}}
@media(max-width:620px){.filters-main,.filters-main.search-first,.filter-more-grid{grid-template-columns:1fr}.filters-main.search-first .searchbox,.filters-main.search-first .field{grid-column:auto}.card-summary{-webkit-line-clamp:4}.stats-intro{grid-template-columns:1fr 1fr}}
@media(max-width:420px){.stats-intro{grid-template-columns:1fr}}


/* Official Yamaha manual reference */
#manuals{min-width:0}
.manual-tools{padding:13px;margin-bottom:15px}
.manual-search-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px;align-items:center}
.manual-groups{display:flex;gap:7px;margin-top:10px;padding:1px 1px 5px;overflow-x:auto;overscroll-behavior-inline:contain;scrollbar-width:thin}
.manual-group-btn{flex:0 0 auto;display:inline-flex;align-items:center;min-height:44px;border:1px solid var(--line);border-radius:999px;background:rgba(12,23,31,.72);color:#b9ceda;padding:8px 12px;font:inherit;font-size:12px;font-weight:650;line-height:1.2;cursor:pointer;white-space:nowrap}
.manual-group-btn:hover,.manual-group-btn.active{background:#183b4d;border-color:#35627a;color:#eaf6fb}
.manual-group-btn:focus-visible,.manual-topic>summary:focus-visible,.manual-table-wrap:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.manual-topics{display:grid;gap:10px}
.manual-topic{min-width:0;border:1px solid var(--line);border-radius:13px;background:rgba(13,23,32,.78);overflow:hidden}
.manual-topic>summary{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:13px 14px;cursor:pointer;list-style:none;user-select:none}
.manual-topic>summary::-webkit-details-marker{display:none}
.manual-topic>summary::after{content:'+';flex:0 0 auto;color:var(--cyan);font-size:18px;font-weight:400;order:3}
.manual-topic[open]>summary::after{content:'−'}
.manual-topic-heading{display:grid;gap:3px;min-width:0;flex:1}
.manual-topic-heading strong{font-size:14px;line-height:1.35;color:#dbe9ef;overflow-wrap:anywhere}
.manual-topic-heading small{color:var(--muted);font-size:12px;font-weight:500;overflow-wrap:anywhere}
.manual-topic>summary .badge{flex:0 0 auto}
.manual-topic-body{padding:0 14px 14px;border-top:1px solid rgba(54,86,107,.42)}
.manual-topic-body>p{margin:12px 0 0;font-size:13.5px;line-height:1.62;color:#c8d5db;overflow-wrap:anywhere}
.manual-topic-body strong{color:#edf7fa}
.manual-topic-body code{padding:1px 5px;border:1px solid rgba(54,86,107,.72);border-radius:6px;background:#0b151d;color:#cce8f2;font:inherit;font-size:.92em;overflow-wrap:anywhere}
.manual-list{margin:12px 0 0;padding-left:21px;color:#c8d5db;font-size:13.5px;line-height:1.58}
.manual-list li+li{margin-top:6px}
.manual-list-source{display:block;margin-top:4px;color:var(--muted);font-size:12px;line-height:1.45}
.manual-list-source code{font-size:1em}
.manual-source{margin:11px 0 0;padding-top:9px;border-top:1px solid rgba(54,86,107,.34);color:var(--muted);font-size:12px;line-height:1.5;overflow-wrap:anywhere}
.manual-table-wrap{max-width:100%;margin:12px 0 0;overflow-x:auto;border:1px solid rgba(54,86,107,.62);border-radius:10px;background:#0d1820;overscroll-behavior-inline:contain}
.manual-table{width:100%;min-width:560px;border-collapse:collapse;font-size:12.5px;line-height:1.45;color:#c8d5db}
.manual-table th,.manual-table td{padding:9px 10px;text-align:left;vertical-align:top;border-bottom:1px solid rgba(54,86,107,.38);border-right:1px solid rgba(54,86,107,.28);overflow-wrap:anywhere}
.manual-table th:last-child,.manual-table td:last-child{border-right:0}
.manual-table tr:last-child td{border-bottom:0}
.manual-table th{position:sticky;top:0;background:#142530;color:#dceaf0;font-weight:700;white-space:normal}
.manual-table td:first-child{color:#dbe7ec;font-weight:600}
@media(max-width:620px){
  .manual-search-row{grid-template-columns:minmax(0,1fr)}
  .manual-search-row .btn{width:100%}
  .manual-topic>summary{align-items:flex-start;padding:12px}
  .manual-topic>summary .badge{display:none}
  .manual-topic-body{padding:0 12px 12px}
  .manual-table{min-width:520px;font-size:12px}
}

#parts{min-width:0}
.parts-caution{margin-bottom:12px;padding:12px 14px;border-color:rgba(230,179,95,.46);color:#d7c49e;font-size:12.5px;line-height:1.5}
.parts-tools{padding:13px;margin-bottom:15px}
.parts-search-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px;align-items:center}
.parts-groups{display:flex;gap:7px;margin-top:10px;padding:1px 1px 5px;overflow-x:auto;overscroll-behavior-inline:contain;scrollbar-width:thin}
.parts-group-btn{flex:0 0 auto;display:inline-flex;align-items:center;min-height:44px;border:1px solid var(--line);border-radius:999px;background:rgba(12,23,31,.72);color:#b9ceda;padding:8px 12px;font:inherit;font-size:12px;font-weight:650;line-height:1.2;cursor:pointer;white-space:nowrap}
.parts-group-btn:hover,.parts-group-btn.active{background:#183b4d;border-color:#35627a;color:#eaf6fb}
.parts-group-btn:focus-visible,.parts-section>summary:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.parts-results{display:grid;gap:10px}
.parts-section{min-width:0;border:1px solid var(--line);border-radius:13px;background:rgba(13,23,32,.78);overflow:hidden}
.parts-section>summary{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:13px 14px;cursor:pointer;list-style:none;user-select:none}
.parts-section>summary::-webkit-details-marker{display:none}
.parts-section>summary::after{content:'+';flex:0 0 auto;color:var(--cyan);font-size:18px;font-weight:400}
.parts-section[open]>summary::after{content:'−'}
.parts-section>summary>span:first-child{font-size:14px;font-weight:750;color:#dbe9ef}
.parts-section>summary .counter{margin-left:auto}
.parts-section-body{display:grid;gap:9px;padding:10px;border-top:1px solid rgba(54,86,107,.42)}
.parts-card{min-width:0;padding:13px;border:1px solid rgba(54,86,107,.62);border-radius:12px;background:#0d1820}
.parts-card-head{display:flex;align-items:flex-start;justify-content:space-between;gap:10px;margin-bottom:10px}
.parts-card h4{margin:0;font-size:14px;line-height:1.4;color:#edf7fa;overflow-wrap:anywhere}
.parts-refs{display:grid;gap:7px}
.parts-ref{display:flex;align-items:center;flex-wrap:wrap;gap:5px 8px;padding:8px 9px;border:1px solid rgba(54,86,107,.34);border-radius:9px;background:rgba(8,17,24,.5);font-size:12.5px;line-height:1.45;overflow-wrap:anywhere}
.parts-ref-main{display:flex;align-items:center;flex-wrap:wrap;gap:6px 8px;min-width:0}
.parts-ref-main strong{font-weight:700;color:#dbe9ef;overflow-wrap:anywhere}
.parts-ref-designation,.parts-ref-details{color:var(--muted)}
.parts-source{display:inline-flex;align-items:center;min-height:20px;padding:2px 6px;border:1px solid rgba(106,211,216,.25);border-radius:999px;color:#91b8c5;font-size:12px;line-height:1.2;white-space:nowrap}
.parts-inline-link,.parts-links a{font-size:12px}
.parts-specs{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(210px,100%),1fr));gap:7px;margin:9px 0 0}
.parts-specs>div{display:grid;gap:2px;padding:8px 9px;border:1px solid rgba(54,86,107,.3);border-radius:9px;background:rgba(10,19,26,.55)}
.parts-specs dt{color:var(--muted);font-size:12px;line-height:1.35}
.parts-specs dd{margin:0;color:#d7e5eb;font-size:12.5px;line-height:1.45;overflow-wrap:anywhere}
.parts-notes{display:grid;gap:7px;margin-top:9px}
.parts-note{display:flex;align-items:flex-start;flex-wrap:wrap;gap:5px 8px;padding:8px 9px;border-left:2px solid var(--line2);border-radius:7px;background:rgba(16,28,37,.66);color:#bdccd3;font-size:12px;line-height:1.5}
.parts-note b{color:#d6e3e8;font-size:12px}
.parts-note.recommendation{border-left-color:var(--amber)}
.parts-links{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-top:9px}
@media(max-width:620px){
  .parts-search-row{grid-template-columns:minmax(0,1fr)}
  .parts-search-row .btn{width:100%}
  .parts-section>summary{padding:12px}
  .parts-section-body{padding:8px}
  .parts-card{padding:11px}
  .parts-card-head{display:grid;gap:6px}
  .parts-ref{align-items:flex-start}
}
.related-block{margin-top:12px;padding-top:10px;border-top:1px solid rgba(54,86,107,.38)}
.related-block h4{margin:0 0 8px;color:#cfe0e7;font-size:12px;line-height:1.35}
.related-links{display:flex;flex-wrap:wrap;gap:7px}
.relation-link{min-height:44px;padding:8px 10px;text-align:left;white-space:normal}
.relation-target{outline:2px solid var(--cyan);outline-offset:2px}
@media(max-width:620px){.related-links{display:grid}.relation-link{width:100%}}


/* Knowledge base */
#knowledge{min-width:0}
.kb-tools{padding:13px;margin-bottom:15px}
.kb-categories{display:flex;gap:7px;margin-top:10px;padding:1px 1px 5px;overflow-x:auto;overscroll-behavior-inline:contain;scrollbar-width:thin}
.kb-category-btn{flex:0 0 auto;min-height:44px;border:1px solid var(--line);border-radius:999px;background:rgba(12,23,31,.72);color:#b9ceda;padding:8px 12px;font:inherit;font-size:12px;font-weight:650;line-height:1.2;cursor:pointer;white-space:nowrap}
.kb-category-btn:hover,.kb-category-btn.active{background:#183b4d;border-color:#35627a;color:#eaf6fb}
.kb-category-btn:focus-visible,.kb-card button:focus-visible,.kb-source-section button:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.kb-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.kb-card{display:flex;flex-direction:column;min-height:180px;padding:15px;border:1px solid var(--line);border-radius:14px;background:#101c25;box-shadow:0 10px 28px rgba(0,0,0,.18)}
.kb-card-head{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}
.kb-card h4{margin:4px 0 10px;font-size:16px;line-height:1.35;overflow-wrap:anywhere}
.kb-category{color:var(--muted);font-size:12px;line-height:1.35}
.kb-coverage{display:flex;flex-wrap:wrap;gap:6px;margin:0 0 10px}
.kb-source{display:inline-flex;align-items:center;min-height:25px;padding:4px 8px;border:1px solid var(--line);border-radius:999px;background:#0d1720;color:#b7c9d2;font-size:12px;line-height:1.2}
.kb-source.official{border-color:rgba(85,178,224,.5);background:rgba(24,65,86,.5);color:#bde8fa}
.kb-card-actions{display:flex;justify-content:flex-end;margin-top:auto;padding-top:12px}
.search-entity-card{border-color:rgba(85,178,224,.48)}
.kb-detail-head{display:grid;gap:13px;margin-bottom:16px}
.kb-detail-head>#kbBack{justify-self:start}
.kb-detail-title{padding:16px;border:1px solid var(--line);border-radius:16px;background:#101c25}
.kb-detail-title h3{margin:4px 0 10px;font-size:clamp(24px,3vw,34px);line-height:1.15;letter-spacing:-.025em}
.kb-detail-sections{display:grid;gap:14px}
.kb-source-section{padding:14px;border:1px solid var(--line);border-radius:16px;background:rgba(12,21,29,.78)}
.kb-source-section.kb-official{border-color:rgba(85,178,224,.42);background:#101f29}
.kb-section-title{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:11px}
.kb-section-title h4{margin:0;font-size:17px;color:#e6f2f6}
.kb-section-title span{color:var(--muted);font-size:12px}
.kb-owner-list,.kb-part-list{display:grid;gap:9px}
.kb-owner-card{padding:12px;border:1px solid rgba(54,86,107,.56);border-radius:12px;background:#0d1820}
.kb-owner-card h5{margin:8px 0 7px;font-size:14px;line-height:1.4}
.kb-owner-card p{margin:0 0 10px;color:#c8d5db;font-size:13px;line-height:1.55;overflow-wrap:anywhere}
.kb-source-open{display:flex;justify-content:flex-end;margin-top:10px;padding-top:9px;border-top:1px solid rgba(54,86,107,.3)}
.kb-manual-topic+.kb-manual-topic{margin-top:8px}
.kb-part-card{box-shadow:none}
@media(max-width:1120px){.kb-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:680px){.kb-grid{grid-template-columns:1fr}.kb-source-section{padding:10px}.kb-detail-title{padding:13px}.kb-section-title{align-items:flex-start;flex-direction:column;gap:3px}.kb-source-open .btn{width:100%}}

/* Visual hierarchy polish: sequential reference cards */
.manual-topics{
  gap:14px;
}
.manual-topic{
  border-color:rgba(54,86,107,.72);
  background:#101c25;
  box-shadow:0 7px 20px rgba(0,0,0,.14);
  transition:border-color .16s ease,box-shadow .16s ease,background-color .16s ease;
}
.manual-topic>summary{
  background:#12222c;
}
.manual-topic:hover{
  border-color:rgba(69,108,133,.9);
}
.manual-topic[open]{
  border-color:rgba(85,178,224,.48);
  box-shadow:0 9px 24px rgba(0,0,0,.18);
}
.manual-topic[open]>summary{
  background:#152934;
}
.manual-topic-body{
  background:rgba(5,12,17,.22);
}

.parts-results{
  gap:14px;
}
.parts-section{
  border-color:rgba(54,86,107,.72);
  background:#101c25;
  box-shadow:0 8px 22px rgba(0,0,0,.13);
}
.parts-section>summary{
  background:#12222c;
}
.parts-section[open]{
  border-color:rgba(69,108,133,.84);
}
.parts-section[open]>summary{
  background:#152934;
}
.parts-section-body{
  gap:14px;
  padding:13px;
  background:rgba(5,12,17,.28);
}
.parts-card{
  position:relative;
  padding:14px 14px 14px 16px;
  border-color:rgba(63,101,126,.78);
  border-radius:13px;
  background:#101c25;
  box-shadow:0 7px 18px rgba(0,0,0,.16),inset 0 1px rgba(255,255,255,.018);
  overflow:hidden;
}
.parts-card-head{
  margin-bottom:11px;
  padding-bottom:10px;
  border-bottom:1px solid rgba(66,103,126,.38);
}
.parts-card h4{
  font-size:14.5px;
  letter-spacing:-.005em;
}

.kb-owner-list,.kb-part-list{
  gap:12px;
}
.kb-owner-card{
  border-color:rgba(63,101,126,.7);
  background:#101c25;
  box-shadow:0 6px 16px rgba(0,0,0,.13);
}
.kb-manual-topic+.kb-manual-topic{
  margin-top:12px;
}
.kb-part-card{
  box-shadow:0 6px 16px rgba(0,0,0,.13);
}

@media(max-width:620px){
  .manual-topics,.parts-results{
    gap:11px;
  }
  .parts-section-body{
    gap:11px;
    padding:10px;
  }
  .parts-card{
    padding:12px 12px 12px 14px;
  }
  .parts-card-head{
    padding-bottom:9px;
  }
}



/* Impeccable refinement — restrained technical UI, accessible states, coherent surfaces. */
:root{
  --bg:#081119;
  --bg2:#0b151e;
  --panel:#101b24;
  --panel2:#152630;
  --panel3:#1b303c;
  --line:#2d4352;
  --line2:#477087;
  --text:#f4f8fa;
  --muted:#afc1cb;
  --blue:#67bfe8;
  --cyan:#7bdadd;
  --amber:#e8b866;
  --red:#f08484;
  --green:#79d4aa;
  --focus:#a4ebff;
  --shadow:0 14px 36px rgba(0,0,0,.24);
  --radius:14px;
}
html{background:var(--bg);color-scheme:dark;scrollbar-color:#36596b #09131b}
body{background:var(--bg);line-height:1.5;accent-color:var(--blue);caret-color:var(--cyan);font-family:"Segoe UI Variable","Segoe UI",-apple-system,BlinkMacSystemFont,sans-serif}
.counter,.kpi b,.section-count,.pagination{font-variant-numeric:tabular-nums}
::selection{background:rgba(103,191,232,.3);color:#fff}
a{text-underline-offset:.18em;text-decoration-thickness:1px}
a:hover{color:#b9e8fb}
*{scrollbar-width:thin;scrollbar-color:#36596b #09131b}
*::-webkit-scrollbar{width:10px;height:10px}
*::-webkit-scrollbar-track{background:#09131b}
*::-webkit-scrollbar-thumb{background:#36596b;border:2px solid #09131b;border-radius:999px}

.skip-link{position:fixed;z-index:200;top:10px;left:10px;padding:9px 12px;border:1px solid var(--line2);border-radius:10px;background:#102531;color:var(--text);transform:translateY(-150%);transition:transform .14s ease;text-decoration:none}
.skip-link:focus{transform:none}
#mainContent:focus{outline:none}

button,input,select,textarea,summary,a{outline:none}
button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible,a:focus-visible,[tabindex]:focus-visible{
  outline:2px solid var(--focus)!important;
  outline-offset:2px!important;
}
button:disabled,.btn:disabled{cursor:not-allowed;opacity:.5;transform:none!important}

.sidebar{padding:20px 15px;border-right-color:var(--line);background:#0b151e;backdrop-filter:none;box-shadow:none}
.brand{padding-bottom:18px}
.brand-logo{width:224px;filter:drop-shadow(0 10px 20px rgba(0,0,0,.3))}
.nav{gap:5px}
.nav-button{min-height:46px;border-radius:10px;transition:background-color .14s ease,border-color .14s ease,color .14s ease;transform:none!important}
.nav-button:hover{background:#12232d;border-color:#304b5b;color:#eaf4f8}
.nav-button.active,.nav-button[aria-current="page"]{background:#173342;border-color:#3c657a;color:#fff;box-shadow:none}

.content{max-width:1540px;padding:28px 30px 40px}
.screen-head{align-items:flex-end;margin-bottom:20px;padding:0 0 16px;border-bottom:1px solid var(--line)}
.screen-head h3{font-size:clamp(25px,2.1vw,32px);letter-spacing:-.025em;margin:0 0 6px}
.screen-head p{max-width:72ch;color:var(--muted);font-size:14px;line-height:1.6}
.counter{border-color:var(--line);background:#0c1720;color:#c1d1d9}

.panel,.card,.kb-card,.kb-detail-title,.kb-source-section,.kb-owner-card,.manual-topic,.parts-section,.parts-card{
  background:var(--panel);
  border-color:var(--line);
  box-shadow:0 8px 24px rgba(0,0,0,.16);
}
.panel{box-shadow:0 10px 28px rgba(0,0,0,.18)}
.card{min-height:0;padding:18px;background:#101c25;transition:border-color .14s ease,background-color .14s ease,box-shadow .14s ease;overflow:visible}
.card:hover{transform:none;background:#12212b;border-color:#41657a;box-shadow:0 10px 28px rgba(0,0,0,.2)}
.card h4{font-size:17px;line-height:1.35}
.card-summary{color:#d6e2e7;font-size:14px;line-height:1.6}
.card-secondary{color:#bdccd4}

.field,.select,.searchbox{min-height:46px;border-color:#355365;background:#09141c;box-shadow:none}
.field::placeholder,.searchbox::placeholder,textarea::placeholder{color:#8fa6b3;opacity:1}
.field:focus,.select:focus,.searchbox:focus{border-color:#65b9df;box-shadow:none}
.filters-shell,.manual-tools,.parts-tools,.kb-tools{background:#0d1821}
.filter-more>summary,.disclosure>summary{min-height:44px}

.btn{min-height:44px;border-radius:10px;background:#172832;border-color:#355365;padding:9px 13px;transition:background-color .14s ease,border-color .14s ease,color .14s ease,box-shadow .14s ease;transform:none!important}
.btn:hover{background:#1b303c;border-color:#4b7489;transform:none}
.btn.primary{background:#216f94;border-color:#3b91b6;color:#fff;box-shadow:none}
.btn.primary:hover{background:#287da4;border-color:#57a9cc}
.btn.ghost{background:transparent}
.btn.danger{background:#422329;border-color:#7a434a;color:#ffd9dc}
.btn.icon{width:44px;min-width:44px;padding:0}
.pagination .btn{min-width:44px}
.relation-link{min-height:44px;padding:8px 10px}
.manual-group-btn,.parts-group-btn,.kb-category-btn{min-height:44px}

.badge{background:#0b1720;border-color:#35505f;color:#b8c9d2}
.badge.blue{color:#c1e9fa;border-color:#356b85;background:#0d2835}
.badge.green{color:#bcebcf;border-color:#37735a;background:#0d2a20}
.badge.amber{color:#f5d397;border-color:#795d32;background:#2b2113}
.badge.red{color:#ffc0c0;border-color:#7c4348;background:#32191d}

.check-group-head{background:#13232d}
.check-row{background:#0e1a23;transition:border-color .14s ease,background-color .14s ease}
.check-row[data-state="Норма"]{background:#10251f}
.check-row[data-state="Требует внимания"]{background:#282014}
.check-row[data-state="Серьёзная проблема"]{background:#2b181c}
.check-row .select{min-height:44px}
.progress-track>span{background:var(--blue)}
.score{border-width:4px}

.parts-note{border:1px solid var(--line);border-left-width:1px;background:#101c25}
.parts-note.recommendation{border-color:rgba(232,184,102,.5)}
.parts-card,.kb-owner-card{box-shadow:none}
.parts-ref,.parts-specs>div{background:#0c1720}
.parts-source{min-height:24px}
.manual-topic,.parts-section{box-shadow:none}
.manual-topic>summary,.parts-section>summary{min-height:48px;background:#12222c}
.manual-topic[open]>summary,.parts-section[open]>summary{background:#152934}
.manual-topic-body,.parts-section-body{background:#0c171f}
.kb-card{min-height:0;background:#101c25}
.kb-source-section.kb-official{background:#101f29}
.kb-detail-title{background:#101c25}

.drawer-backdrop{background:rgba(2,7,11,.72);transition:opacity .16s ease}
.drawer{background:#0b151e;border-left-color:#365262;box-shadow:-18px 0 46px rgba(0,0,0,.4);transition:transform .2s cubic-bezier(.2,.8,.2,1)}
.drawer-head{background:#0e1b24}
.drawer-body{scrollbar-gutter:stable}
body.drawer-open{overflow:hidden}
.source-message{background:#0f1d26}
.toast{background:#142833;border-color:#42677b;box-shadow:0 12px 30px rgba(0,0,0,.28)}

@media(max-width:1120px){.content{padding-left:22px;padding-right:22px}}
@media(max-width:820px){
  :root{--mobile-nav:116px}
  .content{padding:16px 12px calc(var(--mobile-nav) + 18px)}
  .screen-head{align-items:flex-start;padding-left:0}
  .mobile-nav{height:var(--mobile-nav);gap:2px 3px;padding:6px max(6px,env(safe-area-inset-right)) max(6px,env(safe-area-inset-bottom)) max(6px,env(safe-area-inset-left));background:#0b151e;backdrop-filter:none}
  .mobile-nav .nav-button{min-height:48px;border-radius:8px;font-size:12px;padding:5px 3px!important}
  .mobile-nav .nav-button.active,.mobile-nav .nav-button[aria-current="page"]{box-shadow:none}
  .drawer{width:min(100vw,720px)}
}
@media(max-width:430px){
  .content{padding-left:10px;padding-right:10px}
  .screen-head h3{font-size:24px}
  .card{padding:15px}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .skip-link,.drawer,.drawer-backdrop,.toast{transition:none}
}


/* Audited refinement: preserve useful scan cues and fix intermediate-width layout. */
body{font-family:"Segoe UI Variable","Segoe UI",system-ui,-apple-system,BlinkMacSystemFont,sans-serif}
.cards{gap:16px}
.card{
  border-left-color:rgba(103,191,232,.88);
  box-shadow:inset 2px 0 rgba(103,191,232,.45);
}
.card:hover{box-shadow:inset 2px 0 rgba(123,218,221,.62)}
.screen-head{padding-left:14px}
.screen-head::before{
  content:"";position:absolute;left:0;top:2px;bottom:18px;width:2px;border-radius:2px;background:var(--cyan);opacity:.86;
}
@media(min-width:621px) and (max-width:1080px){
  .filters-main.fault-main{grid-template-columns:1fr 1fr}
  .filters-main.fault-main .searchbox{grid-column:1/-1}
}
@media(max-width:820px){
  .screen-head{padding-left:12px}
  .screen-head::before{bottom:15px}
}

/* Readability pass: this is a text-heavy technical reference, so content text
   gets priority over information density. Keep utility chrome compact. */
body{font-size:16px;line-height:1.58}
.screen-head p{font-size:15px;line-height:1.65}
.card h4{font-size:18px;line-height:1.38}
.card-summary{font-size:15.5px;line-height:1.66}
.card-secondary{font-size:13.5px;line-height:1.55}
.result-count,.filter-more>summary{font-size:13.5px}
.disclosure>summary{font-size:14px}

.check-group-head h4{font-size:16px}
.check-row h5{font-size:15px;line-height:1.45}
.check-row p{font-size:14px;line-height:1.62}
.profile-result ul{font-size:14px;line-height:1.6}

.detail-block h4{font-size:15px}
.detail-block p,.detail-block li{font-size:15.5px;line-height:1.7}
.source-meta{font-size:12.5px}
.source-text{font-size:14.5px;line-height:1.65}

.manual-topic-heading strong{font-size:15px;line-height:1.45}
.manual-topic-heading small{font-size:12.5px}
.manual-topic-body>p{font-size:15px;line-height:1.7}
.manual-list{font-size:15px;line-height:1.68}
.manual-list-source,.manual-source{font-size:12.5px;line-height:1.55}
.manual-table{font-size:13.5px;line-height:1.55}

.parts-caution{font-size:14px;line-height:1.6}
.parts-section>summary>span:first-child{font-size:15px}
.parts-card h4{font-size:15.5px;line-height:1.45}
.parts-ref{font-size:14px;line-height:1.55}
.parts-inline-link,.parts-links a{font-size:13px}
.parts-specs dt{font-size:12.5px}
.parts-specs dd{font-size:14px;line-height:1.55}
.parts-note{font-size:13.5px;line-height:1.6}
.parts-note b{font-size:13.5px}
.related-block h4{font-size:13px}

.kb-card h4{font-size:17px;line-height:1.4}
.kb-category{font-size:12.5px}
.kb-owner-card h5{font-size:15px}
.kb-owner-card p{font-size:14.5px;line-height:1.65}
.kb-section-title h4{font-size:18px}

.stat-line{font-size:13.5px;line-height:1.5}
.stat-line b{font-size:14px}
.kpi span{font-size:13.5px;line-height:1.45}

@media(max-width:620px){
  body{font-size:16px}
  .screen-head p{font-size:15px}
  .card h4{font-size:18px}
  .card-summary{font-size:15.5px;line-height:1.68}
  .detail-block p,.detail-block li{font-size:15.5px;line-height:1.7}
  .source-text{font-size:14.5px}
  .manual-topic-body>p,.manual-list{font-size:15px}
  .manual-table{font-size:13px}
  .mobile-nav .nav-button{font-size:12px}
}


/* Strong readability pass v2.
   The site is a long-form technical reference: reading comfort takes priority
   over compact information density. Utility chrome stays smaller than content. */
body{
  font-size:18px;
  line-height:1.64;
}

/* Navigation / controls: readable, but not oversized. */
.sidebar .nav-button{font-size:15.5px}
.titlebar h2{font-size:18px}
.titlebar small{font-size:13.5px}
.field,.select,.searchbox,.btn{font-size:16px}
.counter{font-size:14px}
.badge{font-size:13.5px}
.small{font-size:14px}

/* Page hierarchy. */
.screen-head h3{font-size:clamp(29px,2.35vw,36px);line-height:1.16}
.screen-head p{font-size:17px;line-height:1.7;max-width:78ch}

/* Main cards. */
.card h4{font-size:20px;line-height:1.42}
.card-summary{
  font-size:17.5px;
  line-height:1.72;
  -webkit-line-clamp:4;
}
.card-secondary{font-size:15.5px;line-height:1.62}
.result-count,.filter-more>summary{font-size:15px}
.disclosure>summary{font-size:16px}

/* Purchase/checklist text. */
.check-group-head h4{font-size:18px}
.section-count{font-size:13.5px}
.check-index{font-size:13.5px}
.check-row h5{font-size:17px;line-height:1.48}
.check-row p{font-size:16px;line-height:1.68}
.profile-result ul{font-size:16px;line-height:1.66}

/* Drawer / detailed technical text. */
.drawer-head h3{font-size:24px;line-height:1.32}
.detail-block h4{font-size:17px;line-height:1.4}
.detail-block p,.detail-block li{font-size:17.5px;line-height:1.76}
.source-meta{font-size:13.5px}
.source-text{font-size:16px;line-height:1.72}

/* Manuals. */
.manual-group-btn{font-size:14.5px}
.manual-topic-heading strong{font-size:17px;line-height:1.48}
.manual-topic-heading small{font-size:14px;line-height:1.5}
.manual-topic-body>p{font-size:17px;line-height:1.76}
.manual-list{font-size:17px;line-height:1.74}
.manual-list-source,.manual-source{font-size:14px;line-height:1.6}
.manual-table{font-size:15.5px;line-height:1.62}

/* Parts / analogues. */
.parts-caution{font-size:16px;line-height:1.68}
.parts-group-btn{font-size:14.5px}
.parts-section>summary>span:first-child{font-size:17px}
.parts-card h4{font-size:17.5px;line-height:1.5}
.parts-ref{font-size:16px;line-height:1.62}
.parts-source{font-size:13.5px}
.parts-inline-link,.parts-links a{font-size:15px}
.parts-specs dt{font-size:14px;line-height:1.45}
.parts-specs dd{font-size:16px;line-height:1.62}
.parts-note,.parts-note b{font-size:15.5px;line-height:1.66}
.related-block h4{font-size:15px}

/* Knowledge base. */
.kb-category-btn{font-size:14.5px}
.kb-card h4{font-size:19px;line-height:1.44}
.kb-category{font-size:14px}
.kb-source{font-size:13.5px}
.kb-section-title h4{font-size:20px}
.kb-section-title span{font-size:14px}
.kb-owner-card h5{font-size:17px}
.kb-owner-card p{font-size:16.5px;line-height:1.72}

/* Statistics. */
.stat-line{font-size:15.5px;line-height:1.58}
.stat-line b{font-size:16px}
.kpi span{font-size:15px;line-height:1.55}

/* On phones, keep the same readable content size instead of shrinking it. */
@media(max-width:620px){
  body{font-size:17px}
  .screen-head h3{font-size:27px}
  .screen-head p{font-size:16.5px;line-height:1.7}
  .card h4{font-size:19.5px}
  .card-summary{font-size:17px;line-height:1.72;-webkit-line-clamp:5}
  .card-secondary{font-size:15px}
  .detail-block p,.detail-block li{font-size:17px;line-height:1.75}
  .source-text{font-size:15.5px}
  .manual-topic-body>p,.manual-list{font-size:16.5px}
  .manual-table{font-size:15px}
  .parts-ref,.parts-specs dd{font-size:15.5px}
  .kb-owner-card p{font-size:16px}
  .mobile-nav .nav-button{font-size:12px!important}
}