:root{
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color-scheme:dark;
  color:#e8edf5;
  background:#0b0e13;
  --bg:#0b0e13;
  --shell:#0f131a;
  --sidebar:#10141b;
  --panel:#151a22;
  --panel-2:#191f29;
  --panel-3:#202733;
  --stage:#0a0d12;
  --line:#29313d;
  --line-strong:#384353;
  --text:#e8edf5;
  --muted:#929eae;
  --muted-2:#6f7b8d;
  --accent:#2f7df4;
  --accent-2:#4e91f7;
  --accent-soft:#17335e;
  --ok:#43d2aa;
  --ok-soft:#123a34;
  --danger:#ff756f;
  --danger-soft:#442221;
  --shadow:0 18px 60px #0007;
}
*{box-sizing:border-box}
html{background:var(--bg);scroll-behavior:smooth}
body{margin:0;min-width:320px;background:var(--bg);color:var(--text)}
button,input,select,textarea{font:inherit}
button,label[for],summary{touch-action:manipulation}
a{color:inherit}

.app-shell{min-height:100vh;display:grid;grid-template-columns:200px minmax(0,1fr);background:linear-gradient(135deg,#0d1117 0%,#0a0d12 62%,#0c1119 100%)}
.sidebar{position:sticky;top:0;height:100vh;display:flex;flex-direction:column;padding:18px 14px;border-right:1px solid #202733;background:linear-gradient(180deg,#121720 0%,#0f131a 100%);z-index:5}
.sidebar-brand{display:flex;align-items:center;gap:11px;padding:7px 8px 18px;text-decoration:none}
.brand-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:linear-gradient(145deg,#3989ff,#175cc9);box-shadow:0 8px 22px #0c55ca55;font-size:17px;font-weight:800;color:white}
.brand-copy{display:flex;flex-direction:column;min-width:0}
.brand-copy strong{font-size:15px;letter-spacing:.01em}
.brand-copy span{margin-top:2px;color:var(--muted);font-size:11px}
.sidebar-nav{display:grid;gap:6px;margin-top:12px}
.nav-item{display:flex;align-items:center;gap:12px;min-height:43px;padding:0 12px;border:1px solid transparent;border-radius:9px;color:#aeb8c7;text-decoration:none;font-size:13px;font-weight:600}
.nav-item>span:first-child{display:grid;place-items:center;width:18px;color:#8996a8;font-size:18px}
.nav-item:hover{background:#171d26;color:#f4f7fb}
.nav-item.active{border-color:#2a3749;background:linear-gradient(90deg,#1b2b45,#19212d);color:#fff;box-shadow:inset 2px 0 var(--accent)}
.nav-item.active>span:first-child{color:#6ba5ff}
.sidebar-spacer{flex:1}
.sidebar-note{display:flex;gap:10px;align-items:flex-start;padding:13px 11px;border:1px solid #252d39;border-radius:10px;background:#151a22}
.status-dot{width:8px;height:8px;margin-top:5px;flex:none;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px #43d2aa15}
.sidebar-note div{display:flex;flex-direction:column;gap:4px}
.sidebar-note strong{font-size:12px}
.sidebar-note span:last-child{font-size:10px;line-height:1.45;color:var(--muted)}

.app-frame{min-width:0;display:flex;flex-direction:column;min-height:100vh}
.topbar{position:sticky;top:0;z-index:4;min-height:66px;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:10px 20px;border-bottom:1px solid #252c36;background:#0f131aeF;backdrop-filter:blur(18px)}
.topbar-title{display:flex;flex-direction:column;gap:2px;min-width:0}
.topbar-title strong{font-size:15px}
.topbar-kicker,.panel-kicker{font-size:10px;font-weight:750;letter-spacing:.09em;text-transform:uppercase;color:#718096}
.topbar-actions{display:flex;align-items:center;gap:12px}
.topbar-hint{font-size:11px;color:var(--muted)}
.topbar-open{display:inline-flex;align-items:center;justify-content:center;min-height:38px;padding:0 14px;border:1px solid #397fe4;border-radius:8px;background:linear-gradient(180deg,#2f83ff,#2168d6);font-size:12px;font-weight:700;color:#fff;cursor:pointer;box-shadow:0 8px 20px #1260d533}
.topbar-open:hover{filter:brightness(1.06)}

main{flex:1;min-width:0;padding:28px clamp(18px,2vw,32px) 24px}
.intro{max-width:780px;margin:12px auto 26px;text-align:center}
.eyebrow{margin:0;color:#6ea4f8;font-size:10px;font-weight:800;letter-spacing:.11em}
h1{margin:10px 0 8px;font-size:clamp(27px,3.4vw,42px);line-height:1.08;letter-spacing:-.042em}
.intro>p:last-child{max-width:690px;margin:0 auto;color:#9ba7b7;font-size:14px;line-height:1.65}
.workspace-shell{display:grid;grid-template-columns:minmax(0,760px);justify-content:center;gap:14px;min-width:0}
.card{border:1px solid var(--line);border-radius:13px;background:linear-gradient(180deg,#171c24,#131820);box-shadow:0 12px 35px #0004}
.open-card{padding:18px}
.panel-heading{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:14px}
.panel-heading h2{margin:3px 0 0;font-size:18px;letter-spacing:-.02em}
.panel-badge{padding:5px 8px;border:1px solid #344154;border-radius:7px;background:#1c2430;color:#aebed3;font-size:10px;font-weight:800;letter-spacing:.08em}

.drop{border:1px dashed #465367;border-radius:11px;padding:34px 24px;text-align:center;background:radial-gradient(circle at 50% 0%,#1c2d46 0,#171d27 43%,#151a22 100%);transition:border-color .15s ease,background .15s ease,transform .15s ease}
.drop.drag{border-color:#5b9bff;background:#192b47;transform:translateY(-1px)}
.drop-icon{width:42px;height:42px;display:grid;place-items:center;margin:0 auto 12px;border:1px solid #3b4a60;border-radius:12px;background:#202938;color:#78aaff;font-size:20px;font-weight:700}
.file-label{display:block;margin-bottom:11px;font-size:15px;font-weight:750;color:#f6f8fc}
.drop>p{margin:10px 0 15px;color:var(--muted);font-size:11px}
input[type=file]{max-width:100%;font-size:11px;color:#9ba7b7}
input[type=file]::file-selector-button{margin-right:9px;padding:7px 10px;border:1px solid #435064;border-radius:7px;background:#202733;color:#e7edf6;font:inherit;font-weight:650;cursor:pointer}
.actions{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-top:15px}
button{min-height:38px;padding:8px 12px;border:1px solid #397fe4;border-radius:8px;background:linear-gradient(180deg,#3183f8,#2167d3);color:#fff;font-weight:700;font-size:12px;cursor:pointer}
button:hover:not(:disabled){filter:brightness(1.08)}
button:disabled{cursor:not-allowed;opacity:.42}
.secondary{border-color:#3a4658;background:#202733;color:#dce5f2;box-shadow:none}
.icon-button{width:38px;padding:0;font-size:15px}
input:not([type=file]),select,textarea{border:1px solid #374354;border-radius:7px;background:#0f141b;color:#e9eef6;outline:none}
input:not([type=file]),select{min-height:36px;min-width:0;max-width:100%;padding:7px 9px;font-size:12px}
textarea{display:block;width:100%;min-height:130px;margin:10px 0;padding:10px;resize:vertical;line-height:1.5;font-size:12px}
input::placeholder,textarea::placeholder{color:#637083}
:focus-visible{outline:2px solid #5b9bff;outline-offset:2px}

#status{min-height:20px;margin:12px 0 7px;color:#aab5c4;font-size:12px;line-height:1.5}
.error{color:#ff908a!important}
.notice,.small{font-size:11px;color:var(--muted);line-height:1.55}
.notice{margin:10px 0 0}
.saved{margin-top:14px;padding-top:13px;border-top:1px solid #29313d}
summary{padding:4px 0;color:#dfe6ef;font-size:12px;font-weight:700;cursor:pointer}
.toolbar{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.saved-toolbar{display:grid;grid-template-columns:1fr;margin-top:10px}
.saved-toolbar label{font-size:10px;color:var(--muted)}
.saved-toolbar input,.saved-toolbar button{width:100%}

.compatibility,.contribution{margin-top:12px;padding:12px;border:1px solid #304052;border-radius:9px;background:#101821}
.compatibility{border-color:#28534d;background:linear-gradient(180deg,#12231f,#101a19)}
.compatibility-head{display:flex;align-items:center;justify-content:space-between;gap:10px}
.compatibility-head span{padding:4px 8px;border-radius:20px;background:#123d35;color:#75e7c4;font-size:10px;font-weight:800}
.compatibility ul{margin:7px 0;padding-left:18px;color:#b7c4d4;font-size:11px;line-height:1.55}
.compatibility p,.contribution p{margin:6px 0;overflow-wrap:anywhere}

body.reader-open .intro{display:none}
body.reader-open main{padding-top:14px}
body.reader-open .workspace-shell{grid-template-columns:minmax(0,1fr);justify-content:stretch;align-items:start}
body.reader-open .open-card{display:block;padding:8px 10px;border-radius:10px;background:#121720}
body.reader-open .open-card .panel-heading{display:none}
body.reader-open .open-card .drop{display:flex;align-items:center;gap:8px;padding:7px 9px;border-style:solid;border-color:#2f3947;background:#0f141b;text-align:left}
body.reader-open .open-card .drop-icon{display:none}
body.reader-open .open-card .file-label{margin:0;white-space:nowrap;font-size:11px}
body.reader-open .open-card .drop>p{display:none}
body.reader-open .open-card input[type=file]{flex:1;min-width:0}
body.reader-open .open-card .actions{margin:0;flex-wrap:nowrap}
body.reader-open .open-card #status{min-height:0;margin:5px 2px 0;font-size:10px}
body.reader-open .open-card .notice,
body.reader-open #compatibility-home:empty{display:none}
body.reader-open .open-card .saved{margin-top:6px;padding-top:6px}
body.reader-open .open-card .saved>summary{font-size:10px;color:#8f9bad}
body.reader-open .open-card .contribution:not([hidden]){margin-top:8px}

.reader{min-width:0;display:grid;grid-template-columns:minmax(0,1fr) minmax(250px,285px);overflow:hidden;border:1px solid var(--line);border-radius:13px;background:#11161d;box-shadow:0 12px 35px #0004}
.reader-stage{min-width:0;border-right:1px solid var(--line)}
.summary{min-height:54px;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 14px;border-bottom:1px solid var(--line);background:#151a22}
.summary-primary{display:flex;align-items:center;gap:9px;min-width:0}
.summary strong{font-size:13px}
.summary-primary>span{padding:3px 7px;border-radius:5px;background:#222b37;color:#aeb9c7;font-size:10px}
.controls{min-height:52px;padding:8px 12px;border-bottom:1px solid var(--line);background:#121720}
.control-group{display:flex;align-items:center;gap:7px}
.controls label{font-size:10px;font-weight:700;color:#8996a7}
.controls select{min-width:96px;background:#0d1218}
.control-help{margin-left:auto;white-space:nowrap}
.viewer{height:calc(100vh - 190px);min-height:440px;overflow:auto;padding:28px;background:
  radial-gradient(circle at 50% 20%,#18202b 0,#0f141b 38%,#0a0e13 72%),
  linear-gradient(#0a0d12,#0a0d12);
overscroll-behavior:contain}
#pages{display:flex;flex-direction:column;align-items:center;gap:26px;min-width:100%;width:max-content}
.page{display:block;flex:none;overflow:hidden;background:#fff;box-shadow:0 18px 50px #0009,0 0 0 1px #ffffff12}

.reader-details{min-width:0;max-height:calc(100vh - 82px);overflow:auto;background:#141922;padding:0 14px 18px}
.details-title{position:sticky;top:0;z-index:1;display:flex;flex-direction:column;gap:3px;padding:15px 0 12px;border-bottom:1px solid var(--line);background:#141922}
.details-title strong{font-size:13px}
.reader-details details{padding:12px 0;border-bottom:1px solid var(--line)}
.reader-details details:last-child{border-bottom:0}
.reader-details details>p{font-size:11px;line-height:1.55;color:#9aa7b7}
.reader-details form{margin:11px 0}
.search-toolbar{display:grid;grid-template-columns:1fr auto}
.search-toolbar label{grid-column:1/-1;font-size:10px;color:var(--muted)}
.reader-details select{width:100%;margin-top:6px}
#search-results{max-height:220px;overflow:auto;padding-left:20px}
#search-results button{width:100%;margin-bottom:7px;text-align:left;font-weight:500;line-height:1.45}
#assets{display:grid;grid-template-columns:repeat(auto-fill,minmax(110px,1fr));gap:8px;padding:0;list-style:none}
#assets li{padding:8px;border:1px solid #2f3947;border-radius:8px;background:#10151c}
#assets img{display:block;max-width:100%;max-height:90px;margin:0 auto 7px}
#assets a{color:#71a8ff;font-size:11px}
#limitations{padding-left:18px;color:#aeb9c8;font-size:11px;line-height:1.6;overflow-wrap:anywhere}

dialog{max-width:min(620px,calc(100vw - 28px));max-height:calc(100dvh - 28px);padding:0;overflow:auto;border:1px solid #3a4658;border-radius:12px;background:#151a22;color:var(--text);box-shadow:var(--shadow)}
dialog::backdrop{background:#030507b8;backdrop-filter:blur(4px)}
.dialog-body{padding:22px;overflow-wrap:anywhere}
.dialog-body h2{margin:0 0 12px;font-size:21px}
.consent-terms{padding-left:21px;color:#b0bccb;font-size:12px;line-height:1.55}
.consent-terms li{margin:8px 0}
.dialog-actions{justify-content:flex-end;margin-top:16px}

footer{padding:12px 20px 18px;text-align:center;color:#566273;font-size:10px}
.skip{position:fixed;top:8px;left:8px;z-index:50;transform:translateY(-200%);padding:10px 12px;border-radius:7px;background:#fff;color:#111;clip-path:inset(50%)}
.skip:focus{transform:none;clip-path:none}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}
[hidden]{display:none!important}

@media(max-width:1180px){
  .reader{grid-template-columns:minmax(0,1fr) 250px}
  .topbar-hint{display:none}
}
@media(max-width:940px){
  .app-shell{grid-template-columns:70px minmax(0,1fr)}
  .sidebar{padding:14px 10px}
  .brand-copy,.nav-item>span:last-child,.sidebar-note div{display:none}
  .sidebar-brand{justify-content:center;padding:5px 0 18px}
  .sidebar-nav{gap:8px}
  .nav-item{justify-content:center;padding:0}
  .nav-item>span:first-child{width:auto}
  .sidebar-note{justify-content:center;padding:12px}
  body.reader-open .workspace-shell{grid-template-columns:1fr}
}
@media(max-width:760px){
  .reader{grid-template-columns:1fr}
  .reader-stage{border-right:0}
  .reader-details{max-height:none;border-top:1px solid var(--line)}
  .details-title{position:relative}
  .viewer{height:60vh;min-height:360px;padding:16px}
  .control-help{display:none}
}
@media(max-width:600px){
  .app-shell{display:block}
  .sidebar{position:relative;width:auto;height:auto;display:flex;flex-direction:row;align-items:center;padding:9px 10px;border-right:0;border-bottom:1px solid var(--line)}
  .sidebar-brand{padding:0;margin-right:6px}
  .brand-mark{width:31px;height:31px}
  .sidebar-nav{display:flex;gap:3px;margin:0;overflow:auto}
  .nav-item{min-width:38px;min-height:38px}
  .sidebar-spacer,.sidebar-note{display:none}
  .topbar{min-height:55px;padding:8px 12px}
  .topbar-kicker{display:none}
  .topbar-title strong{font-size:13px}
  .topbar-open{min-height:34px;padding:0 10px}
  main{padding:18px 10px}
  .intro{margin-top:4px}
  .intro>p:last-child{font-size:12px}
  h1{font-size:28px}
  .open-card{padding:13px}
  .drop{padding:24px 10px}
  body.reader-open main{padding-top:9px}
  body.reader-open .open-card{padding:7px}
  body.reader-open .open-card .drop{display:block;padding:8px;text-align:center}
  body.reader-open .open-card .file-label{display:block;margin:0 0 6px;white-space:normal}
  body.reader-open .open-card input[type=file]{display:block;width:100%;max-width:100%}
  body.reader-open .open-card .actions{display:grid;grid-template-columns:1fr;margin-top:7px}
  body.reader-open .open-card .actions button{width:100%}

  .controls{gap:7px}
  .control-group{width:100%}
  .control-group select{flex:1}
  .summary{align-items:flex-start;flex-direction:column}
  .viewer{height:56vh;min-height:320px;padding:10px}
  .reader-details{padding:0 12px 14px}
  .dialog-body{padding:17px}
}
@media(prefers-reduced-motion:reduce){
  *{scroll-behavior:auto!important;transition:none!important}
}
@media(forced-colors:active){
  .sidebar,.topbar,.card,.reader,.drop,.compatibility,.contribution{border-color:CanvasText}
  .page{border:1px solid CanvasText}
  button,.topbar-open,.brand-mark{forced-color-adjust:auto}
}