/* Barlow, Barlow Condensed, Barlow Semi Condensed (SIL Open Font License 1.1, see OFL.txt). Latin subset, bundled so the pages work offline. */
@font-face{font-family:"Barlow";font-style:normal;font-weight:400;font-display:swap;src:url(fonts/barlow-400.woff2) format("woff2");unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
@font-face{font-family:"Barlow";font-style:normal;font-weight:500;font-display:swap;src:url(fonts/barlow-500.woff2) format("woff2");unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
@font-face{font-family:"Barlow";font-style:normal;font-weight:600;font-display:swap;src:url(fonts/barlow-600.woff2) format("woff2");unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
@font-face{font-family:"Barlow";font-style:normal;font-weight:700;font-display:swap;src:url(fonts/barlow-700.woff2) format("woff2");unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
@font-face{font-family:"Barlow Condensed";font-style:normal;font-weight:600;font-display:swap;src:url(fonts/barlow-condensed-600.woff2) format("woff2");unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
@font-face{font-family:"Barlow Condensed";font-style:normal;font-weight:700;font-display:swap;src:url(fonts/barlow-condensed-700.woff2) format("woff2");unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
@font-face{font-family:"Barlow Condensed";font-style:normal;font-weight:800;font-display:swap;src:url(fonts/barlow-condensed-800.woff2) format("woff2");unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
@font-face{font-family:"Barlow Semi Condensed";font-style:normal;font-weight:500;font-display:swap;src:url(fonts/barlow-semi-condensed-500.woff2) format("woff2");unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
@font-face{font-family:"Barlow Semi Condensed";font-style:normal;font-weight:600;font-display:swap;src:url(fonts/barlow-semi-condensed-600.woff2) format("woff2");unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
@font-face{font-family:"Barlow Semi Condensed";font-style:normal;font-weight:700;font-display:swap;src:url(fonts/barlow-semi-condensed-700.woff2) format("woff2");unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}

/* EE Test Bench: shared theme. Warm charcoal and cream, copper accent, Barlow type, square corners. */
:root{
  --bg:#23262B; --bg-deep:#1C1F23; --cream:#EDE9E1; --cream-ink:#23262B; --cream-dim:rgba(35,38,43,.62); --cream-line:rgba(35,38,43,.16);
  --panel:#2C2F35; --panel2:#33363D; --panel3:#3E414A; --line:rgba(237,233,225,.16); --line2:rgba(237,233,225,.08);
  --ink:#EDE9E1; --ink2:#A6A49F; --ink3:#7A7976;
  --acc:#C9622E; --acc-h:#B3552A; --acc2:#E2804F; --acc-bg:rgba(201,98,46,.14);
  --good:#93C48F; --bad:#E86F61; --warn:#E6B450;
  --ch1:#f5d90a; --ch2:#3fd8e8; --math:#ff6bd6; --ref:#c8ced8; --trig:#E2804F; --mk:#4cc3ff;
  --r:2px; --hdr:64px;
  --f-body:"Barlow",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --f-head:"Barlow Condensed","Barlow",sans-serif;
  --f-lab:"Barlow Semi Condensed","Barlow",sans-serif;
  --f-mono:ui-monospace,"Cascadia Mono",Consolas,monospace;
}
*{box-sizing:border-box}
html{scroll-padding-top:calc(var(--hdr) + 12px)}
body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.55 var(--f-body);-webkit-font-smoothing:antialiased}
a{color:var(--acc2)}
a:hover{color:#F09A6C}
h1,h2,h3,h4{font-family:var(--f-head);font-weight:700;letter-spacing:-.005em}
h1{font-size:clamp(2rem,3.6vw,2.7rem);line-height:1.06;margin:0 0 10px}
h2{font-size:1.6rem;line-height:1.12}
h3{font-size:1.15rem;line-height:1.2}
h1,h2,h3{text-wrap:balance}
p,li{text-wrap:pretty}
.sub{color:var(--ink2);margin:0 0 22px;max-width:900px;font-size:1.02rem}
.wrap{max-width:1360px;margin:0 auto;padding:30px 24px 64px;padding-left:max(24px,env(safe-area-inset-left));padding-right:max(24px,env(safe-area-inset-right))}
code,kbd{font-family:var(--f-mono);font-size:12px}
kbd{background:var(--bg-deep);border:1px solid var(--line);border-bottom-width:2px;border-radius:var(--r);padding:0 5px}
td,th,.num{font-variant-numeric:tabular-nums}
::selection{background:rgba(201,98,46,.45);color:#fff}
:focus-visible{outline:2px solid var(--acc);outline-offset:2px}
.tag,.crumb{font-family:var(--f-lab);font-weight:700;font-size:.78rem;text-transform:uppercase;letter-spacing:.14em;color:var(--acc)}
.crumb{color:var(--ink2);letter-spacing:.1em;font-weight:600;margin:0 0 14px}
.crumb a{color:var(--acc);text-decoration:none}.crumb a:hover{text-decoration:underline}
.crumb + h1{margin-top:0}

/* ---- shell: cream header bar ---- */
header.shell{position:sticky;top:0;z-index:40;background:rgba(237,233,225,.94);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--cream-line);color:var(--cream-ink)}
header.shell .in{max-width:1360px;margin:0 auto;padding:0 24px;height:var(--hdr);display:flex;align-items:center;gap:28px}
header.shell .brand{display:flex;align-items:center;gap:10px;color:var(--cream-ink);text-decoration:none;white-space:nowrap;font-family:var(--f-head);font-weight:700;font-size:1.28rem;letter-spacing:.14em;text-transform:uppercase}
header.shell .brand b{color:var(--acc);font-weight:700}
header.shell .brand svg{flex:none}
header.shell nav{display:flex;gap:26px;align-items:center;flex:1;justify-content:center}
header.shell nav>a,header.shell .dd>button{color:var(--cream-dim);text-decoration:none;font:600 .8rem/1 var(--f-body);text-transform:uppercase;letter-spacing:.07em;padding:8px 0;background:none;border:0;cursor:pointer;position:relative;display:inline-flex;align-items:center;gap:5px;transition:color .15s}
header.shell nav>a:hover,header.shell .dd:hover>button,header.shell .dd.open>button{color:var(--cream-ink)}
header.shell nav>a.on,header.shell .dd.on>button{color:var(--cream-ink)}
header.shell nav>a.on::after,header.shell .dd.on>button::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--acc)}
header.shell .dd{position:relative}
header.shell .dd .caret{font-size:.6rem;transition:transform .15s}
header.shell .dd.open .caret{transform:rotate(180deg)}
header.shell .menu{position:absolute;top:100%;left:50%;transform:translateX(-50%);margin-top:18px;width:290px;background:var(--cream);border:1px solid var(--cream-line);padding:6px;opacity:0;pointer-events:none;transition:opacity .15s;z-index:60;box-shadow:0 10px 30px rgba(0,0,0,.25)}
header.shell .menu::before{content:"";position:absolute;left:-1px;right:-1px;top:-19px;height:19px}
@media (hover:hover){header.shell .dd:hover .menu{opacity:1;pointer-events:auto}}
header.shell .dd.open .menu{opacity:1;pointer-events:auto}
header.shell .menu a{display:block;padding:9px 12px;font:600 .84rem/1.3 var(--f-body);color:var(--cream-ink);text-decoration:none;transition:background .15s}
header.shell .menu a:hover{background:rgba(35,38,43,.06)}
header.shell .menu a.on{color:var(--acc)}
header.shell .menu a small{display:block;font-weight:400;color:var(--cream-dim);font-size:.76rem;margin-top:2px}
header.shell .menu a .n{font-family:var(--f-lab);font-weight:700;color:var(--acc);font-size:.72rem;letter-spacing:.12em;margin-right:8px}
header.shell .score{flex:none;background:var(--acc);color:#fff;text-decoration:none;font:600 .78rem/1 var(--f-body);text-transform:uppercase;letter-spacing:.07em;padding:11px 16px;border-radius:var(--r);white-space:nowrap;transition:background .15s,transform .15s}
header.shell .score:hover{background:var(--acc-h);transform:translateY(-1px);color:#fff}
header.shell .burger{display:none;background:none;border:0;color:var(--cream-ink);font-size:1.5rem;cursor:pointer;min-width:44px;min-height:44px}
@media (max-width:1000px){
  header.shell nav{display:none;position:absolute;top:var(--hdr);left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:var(--cream);padding:8px 24px 16px;border-bottom:1px solid var(--cream-line)}
  header.shell.open nav{display:flex}
  header.shell nav>a,header.shell .dd>button{padding:12px 0;width:100%}
  header.shell nav>a.on::after,header.shell .dd.on>button::after{display:none}
  header.shell .menu{position:static;transform:none;width:auto;margin:0;border:0;box-shadow:none;padding:0 0 6px 12px;opacity:1;pointer-events:auto;display:none;background:none}
  header.shell .dd.open .menu{display:block}
  header.shell .menu::before{display:none}
  header.shell .burger{display:block}
  header.shell .in{gap:12px}header.shell .score{margin-left:auto}
}
@media (max-width:520px){header.shell .brand span{display:none}}

/* ---- shell: cream footer ---- */
footer.site{background:var(--cream);color:var(--cream-ink);padding:48px 0 28px;margin-top:20px}
footer.site .in{max-width:1360px;margin:0 auto;padding:0 24px}
footer.site .cols{display:grid;grid-template-columns:2fr repeat(3,1fr);gap:32px;margin-bottom:36px}
footer.site h4{font-family:var(--f-lab);font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.14em;margin:0 0 14px;color:var(--acc)}
footer.site .cols a{display:block;color:var(--cream-dim);font-size:.9rem;padding:5px 0;text-decoration:none}
footer.site .cols a:hover{color:var(--cream-ink)}
footer.site .brand{display:flex;align-items:center;gap:10px;font-family:var(--f-head);font-weight:700;font-size:1.2rem;letter-spacing:.14em;text-transform:uppercase;margin-bottom:12px}
footer.site .brand b{color:var(--acc)}
footer.site p{color:var(--cream-dim);font-size:.9rem;max-width:340px;margin:0}
footer.site .bot{display:flex;justify-content:space-between;gap:12px 24px;flex-wrap:wrap;padding-top:20px;border-top:1px solid var(--cream-line);color:var(--cream-dim);font-family:var(--f-lab);font-size:.76rem;text-transform:uppercase;letter-spacing:.08em}
footer.site .bot span:first-child{max-width:900px}
@media (max-width:860px){footer.site .cols{grid-template-columns:1fr 1fr}}
@media print{header.shell,footer.site{display:none}}

/* ---- instrument layout ---- */
.layout{display:flex;gap:18px;align-items:flex-start}
.left{flex:1;min-width:0}
.right{width:390px;flex:0 0 390px}
@media (max-width:1020px){.layout{flex-direction:column}.right{width:100%;flex:none}}
/* Desktop: the instrument view stays in sight while the controls scroll. The screen is sized to the
   window height so the whole view fits; --reserve is the height of everything in the view except the screen. */
@media (min-width:1021px) and (min-height:640px){
  .layout{align-items:stretch}
  .left>.view{position:sticky;top:calc(var(--hdr) + 12px);z-index:3;box-shadow:0 -12px 0 0 var(--bg)}
  .view canvas.cv{width:min(100%,calc((100vh - var(--hdr) - var(--reserve,280px)) * 1.25));margin:0 auto}
  .view #board{max-width:calc((100vh - var(--hdr) - 150px) * 1.6);margin:0 auto}
}
/* Wide screens: use the room at the sides for a second column of controls */
@media (min-width:1560px){
  body.instpage .wrap,body.instpage header.shell .in,body.instpage footer.site .in{max-width:1900px}
  body.instpage .right{width:auto;flex:0 0 772px;column-count:2;column-gap:12px}
  body.instpage .right .grp,body.instpage .right .practice,body.instpage .right .meterbox{break-inside:avoid}
  body.instpage .right>#practice{column-span:all}
}
.screen{background:var(--bg-deep);border:1px solid var(--line);border-radius:var(--r);padding:10px}
.status{display:flex;flex-wrap:wrap;gap:6px;font-variant-numeric:tabular-nums}
.status.top{margin-bottom:8px}.status.bot{margin-top:8px}
.st{background:var(--panel);border:1px solid var(--line2);border-radius:var(--r);padding:3px 9px;font:500 12.5px/1.45 var(--f-lab);color:var(--ink2);letter-spacing:.02em}
.st b{color:var(--ink);font-weight:600}
.st.run,.st.trigd{background:rgba(147,196,143,.13);color:var(--good);border-color:rgba(147,196,143,.3)}
.st.stop,.st.hot{background:rgba(232,111,97,.14);color:#F2998E;border-color:rgba(232,111,97,.35)}
.st.auto{background:rgba(230,180,80,.13);color:var(--warn);border-color:rgba(230,180,80,.3)}
.st.ready{background:var(--acc-bg);color:var(--acc2);border-color:rgba(201,98,46,.35)}
.st.run,.st.stop,.st.trigd,.st.auto,.st.ready{font-weight:700;text-transform:uppercase;letter-spacing:.08em;font-size:11.5px}
.st.c1{color:var(--ch1)}.st.c2{color:var(--ch2)}.st.cm{color:var(--math)}.st.trg{color:var(--trig)}
canvas.cv{width:100%;aspect-ratio:10/8;display:block;border-radius:0;background:#121417;cursor:crosshair;touch-action:none}
.meas{display:grid;grid-template-columns:repeat(auto-fill,minmax(118px,1fr));gap:6px;margin-top:8px}
.m{background:var(--panel);border:1px solid var(--line2);border-radius:var(--r);padding:6px 9px;font-variant-numeric:tabular-nums;min-width:0}
.m span{display:block;font:600 11px/1.3 var(--f-lab);letter-spacing:.04em;color:var(--ink2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.m b{font-size:15px;font-weight:600;color:var(--ch1);white-space:nowrap}
.m.c2 b{color:var(--ch2)}.m.cm b{color:var(--math)}.m.cur b{color:var(--ink)}
.m i{display:block;font-style:normal;font-size:10.5px;color:var(--ink3);line-height:1.3}
.warn{margin-top:6px;color:var(--warn);font-size:13px;min-height:16px}
.hint{margin-top:12px;background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:12px 16px}
.hint h4{margin:0 0 4px;font:700 .76rem/1.4 var(--f-lab);text-transform:uppercase;letter-spacing:.14em;color:var(--acc)}
.hint p{margin:0;color:var(--ink2)}
.keys{margin-top:8px;color:var(--ink3);font-size:12px}

/* ---- control groups ---- */
.grp{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:10px 13px;margin-bottom:10px}
.grp>h3{margin:0 0 8px;font:700 .74rem/1.3 var(--f-lab);letter-spacing:.14em;text-transform:uppercase;color:var(--acc2);display:flex;align-items:center;gap:8px;cursor:pointer;user-select:none}
.grp>h3::after{content:"▾";margin-left:auto;color:var(--ink3);font-size:11px}
.grp.closed>h3{margin:0}.grp.closed>h3::after{content:"▸"}
.grp.closed>:not(h3){display:none!important}
.grp>h3 i{width:8px;height:8px;border-radius:0;display:inline-block}
.row{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:7px 0}
.row>label,.row>.lab{color:var(--ink2);font-size:12.5px;white-space:nowrap}
.stp{display:flex;align-items:center;background:var(--bg-deep);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;user-select:none}
.stp button{background:none;border:0;color:var(--ink);width:30px;height:28px;font-size:16px;cursor:pointer;font-family:var(--f-body)}
.stp button:hover{background:var(--acc-bg);color:var(--acc2)}
.stp span{min-width:94px;text-align:center;font-weight:600;font-variant-numeric:tabular-nums}
.seg{display:flex;background:var(--bg-deep);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;flex-wrap:wrap}
.seg button{background:none;border:0;color:var(--ink2);padding:5px 9px;cursor:pointer;font:500 12.5px/1.3 var(--f-body)}
.seg button:hover{color:var(--ink);background:rgba(237,233,225,.05)}
.seg button.on{background:var(--acc);color:#fff}
select,input[type=number],input[type=text]{background:var(--bg-deep);color:var(--ink);border:1px solid var(--line);border-radius:var(--r);padding:5px 8px;font:inherit}
select{max-width:240px}
select:focus-visible,input:focus-visible{outline:2px solid var(--acc);outline-offset:1px;border-color:var(--acc)}
select option{background:var(--panel);color:var(--ink)}
input[type=range]{width:160px;accent-color:var(--acc)}
.sl{display:flex;align-items:center;gap:6px}
.sl b{min-width:72px;text-align:right;font-variant-numeric:tabular-nums;font-weight:600}
.btns{display:flex;gap:6px;flex-wrap:wrap}
.btn{background:transparent;border:1px solid var(--line);color:var(--ink);border-radius:var(--r);padding:6px 12px;cursor:pointer;font:600 12.5px/1.35 var(--f-body);text-decoration:none;display:inline-block;transition:border-color .15s,background .15s,transform .15s}
.btn:hover{border-color:var(--acc);color:var(--ink)}
.btn.on{background:var(--acc-bg);border-color:var(--acc);color:#F3B08C}
.btn.pri,.btn.lg{font-family:var(--f-body);text-transform:uppercase;letter-spacing:.07em;font-size:.76rem}
.btn.pri{background:var(--acc);border-color:var(--acc);color:#fff}
.btn.pri:hover{background:var(--acc-h);border-color:var(--acc-h);color:#fff;transform:translateY(-1px)}
.btn.lg{padding:14px 28px;font-size:.84rem}
.btn.ghost{background:rgba(35,38,43,.4);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}
.btn.go{background:rgba(147,196,143,.12);border-color:rgba(147,196,143,.45);color:var(--good)}
.btn.stopb{background:rgba(232,111,97,.13);border-color:rgba(232,111,97,.5);color:#F2998E}
.btn.sm{padding:3px 8px;font-size:11.5px}
.btn:disabled{opacity:.45;cursor:default;transform:none}
.chk{display:flex;align-items:center;gap:6px;color:var(--ink);cursor:pointer;font-size:13px}
.chk input{accent-color:var(--acc);width:15px;height:15px}
.hide{display:none!important}
.dis{opacity:.45;pointer-events:none}
.tabs{display:flex;gap:4px;margin-bottom:8px}
.tabs button{flex:1;background:var(--bg-deep);border:1px solid var(--line);color:var(--ink2);border-radius:var(--r);padding:6px;cursor:pointer;font:700 .76rem/1.2 var(--f-lab);letter-spacing:.12em}
.tabs button.on{color:#111;border-color:transparent}
.tabs button.on.t1{background:var(--ch1)}.tabs button.on.t2{background:var(--ch2)}
.note{color:var(--ink3);font-size:12px;margin:4px 0 0}

/* ---- practice panel ---- */
.practice{background:var(--panel);border:1px solid rgba(201,98,46,.55);border-radius:var(--r);padding:12px 14px;margin-bottom:10px}
.practice h3{margin:0 0 8px;font:700 .74rem/1.3 var(--f-lab);letter-spacing:.14em;text-transform:uppercase;color:var(--acc2);display:flex;align-items:center;gap:8px}
.practice h3 .pts{margin-left:auto;color:var(--ink);letter-spacing:.06em;font-size:.76rem}
.practice .title{font:700 1.3rem/1.15 var(--f-head);margin:2px 0 6px}
.practice .brief{color:var(--ink);margin:0 0 8px}
.practice .brief p{margin:0 0 6px}
.practice .task{background:var(--bg-deep);border:1px solid var(--line2);border-radius:var(--r);padding:9px 11px;margin:6px 0}
.practice .task.done{opacity:.6}
.practice .task .q{font-weight:600;margin-bottom:6px}
.practice .task .ans{display:flex;gap:6px;align-items:center}
.practice .task .ans input{flex:1;min-width:0}
.practice .task .unit{color:var(--ink2);font-size:12.5px}
.practice .choices{display:flex;flex-direction:column;gap:5px}
.practice .choices .btn{text-align:left;font-weight:500;font-size:13px}
.practice .fb{font-size:13px;margin-top:6px}
.practice .fb.ok{color:var(--good)}.practice .fb.no{color:var(--bad)}.practice .fb.close{color:var(--warn)}
.practice .wait{color:var(--warn);font-size:13px;display:flex;align-items:center;gap:6px}
.practice .wait::before{content:"";width:8px;height:8px;background:var(--warn);animation:pulse 1.2s infinite}
@keyframes pulse{50%{opacity:.25}}
.practice .hints{margin:6px 0 0;padding-left:18px;color:var(--warn);font-size:13px}
.practice .bar{display:flex;gap:6px;flex-wrap:wrap;margin-top:8px}
.practice .explain{background:rgba(147,196,143,.08);border:1px solid rgba(147,196,143,.35);border-radius:var(--r);padding:9px 11px;margin-top:8px;color:#D5E6D3;font-size:13px}
.practice .stars{font-size:20px;color:var(--acc2);letter-spacing:2px}
.practice .stars s,.stars s{color:#4A4C51;text-decoration:none}
.lvl{display:inline-block;font:700 10.5px/1.5 var(--f-lab);text-transform:uppercase;letter-spacing:.1em;border:1px solid var(--line);border-radius:var(--r);padding:0 7px;vertical-align:1px;white-space:nowrap}
.lvl.l1{color:var(--ink2)}
.lvl.l2{color:var(--ink);border-color:rgba(237,233,225,.55)}
.lvl.l3{color:#fff;background:var(--acc);border-color:var(--acc)}
.lvl.l4{color:var(--cream-ink);background:var(--cream);border-color:var(--cream)}
.practice .pick{display:flex;gap:6px;align-items:center;margin:6px 0}
.practice .pick select{flex:1;max-width:none;min-width:0;width:100%}

/* ---- toasts ---- */
#toasts{position:fixed;right:16px;bottom:16px;z-index:70;display:flex;flex-direction:column;gap:8px;max-width:380px}
.toast{background:var(--panel);border:1px solid var(--line);border-left:3px solid var(--acc);border-radius:var(--r);padding:11px 14px;box-shadow:0 10px 30px rgba(0,0,0,.45);transition:opacity .4s,transform .4s}
.toast.bad{border-left-color:var(--bad)}.toast.good{border-left-color:var(--good)}.toast.warn{border-left-color:var(--warn)}
.toast.out{opacity:0;transform:translateY(8px)}

/* ---- generic cards & pages ---- */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:20px 22px}
a.card,a.itile{transition:border-color .2s,transform .2s}
a.card:hover,a.itile:hover{border-color:var(--acc);transform:translateY(-3px)}
.card h3{margin:0 0 6px;font-size:1.3rem}
.card p{color:var(--ink2);margin:0 0 8px}
.pill{display:inline-block;border:1px solid var(--line);border-radius:var(--r);padding:1px 8px;font:600 11.5px/1.5 var(--f-lab);letter-spacing:.04em;color:var(--ink2);margin:0 4px 4px 0}
ul.sq{list-style:none;margin:0;padding:0}
ul.sq li{padding:7px 0 7px 18px;position:relative;border-top:1px solid var(--line);color:var(--ink2)}
ul.sq li::before{content:"";position:absolute;left:0;top:1.05em;width:6px;height:6px;background:var(--acc)}
table.t{border-collapse:collapse;width:100%;font-size:13.5px}
table.t th,table.t td{border-bottom:1px solid var(--line);padding:9px 10px;text-align:left;vertical-align:top}
table.t th{color:var(--acc2);font:700 .72rem/1.3 var(--f-lab);text-transform:uppercase;letter-spacing:.08em;border-bottom:2px solid rgba(237,233,225,.5)}
table.t tr:last-child td{border-bottom:0}
footer.foot{display:none}
@media (pointer:coarse){.seg button{padding:8px 11px}.stp button{height:34px;width:36px}footer.site .cols a{padding:10px 0}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}