/* Karsa Quantum OS Academy
   Extends the IQCSF design system with learning-platform components. */

:root{
  --navy-950:#0b1626; --navy-900:#122241; --navy-800:#1a2f57; --navy-700:#24406e;
  --navy-100:#eaeef6; --navy-050:#f4f6fa;
  --red-700:#c31f1c; --red-600:#d6302a; --red-050:#fdf4f3;
  --teal-700:#1d6f72; --teal-600:#248a8d; --teal-050:#eaf5f5;
  --amber-700:#8b6419; --amber-050:#fff7e6;
  --green-700:#247141; --green-600:#2e8c52; --green-050:#eaf7ef;
  --paper:#fff; --paper-2:#f7f8fb; --ink:#151f30; --muted:#5c6779; --muted-2:#8993a3;
  --line:#e3e7ef; --line-2:#d8dee9;
  --shadow:0 18px 44px rgba(11,22,38,.10); --shadow-sm:0 6px 18px rgba(11,22,38,.07);
  --radius:16px; --radius-sm:11px;
  --font-display:'Space Grotesk','Inter',ui-sans-serif,system-ui,sans-serif;
  --font-body:'Inter',ui-sans-serif,system-ui,-apple-system,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --wrap:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}}
body{margin:0;font-family:var(--font-body);color:var(--ink);background:var(--paper);
  line-height:1.62;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,svg{max-width:100%;height:auto;display:block}
a{color:var(--navy-700);text-decoration:none}
a:hover{color:var(--red-700)}
:focus-visible{outline:3px solid var(--red-700);outline-offset:3px;border-radius:4px}
button{font:inherit;cursor:pointer}
.skip-link{position:absolute;left:-9999px;top:0;z-index:300;padding:12px 18px;background:var(--navy-900);color:#fff;font-weight:700}
.skip-link:focus{left:0}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
.wrap.narrow{max-width:860px}

/* ------------------------------------------------------------- header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:72px}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand img{height:42px;width:auto}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text .bt-1{font-family:var(--font-display);font-weight:700;font-size:14.5px;color:var(--navy-900)}
.brand-text .bt-2{font-size:9.5px;font-weight:700;color:var(--red-700);letter-spacing:.09em;text-transform:uppercase}
.nav{display:flex;align-items:center;gap:3px}
.nav a{padding:9px 12px;border-radius:9px;font-size:13.5px;font-weight:600;color:var(--muted);white-space:nowrap}
.nav a:hover{background:var(--navy-050);color:var(--navy-900)}
.nav a.active{background:var(--navy-100);color:var(--navy-900)}
.nav .progress-chip{display:flex;align-items:center;gap:8px;margin-left:6px;padding:7px 13px;
  border-radius:999px;background:var(--navy-900);color:#fff;font-size:12.5px;font-weight:700;white-space:nowrap}
.nav .progress-chip .pc-bar{width:52px;height:4px;border-radius:3px;background:rgba(255,255,255,.25);overflow:hidden}
.nav .progress-chip .pc-bar span{display:block;height:100%;background:#5fd39b;border-radius:3px;transition:width .4s ease}
.menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line-2);border-radius:11px;
  background:#fff;color:var(--navy-900);align-items:center;justify-content:center;flex:0 0 auto}
.menu-toggle span{display:block;width:20px;height:2px;background:currentColor;position:relative}
.menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0;width:20px;height:2px;background:currentColor}
.menu-toggle span::before{top:-6px}.menu-toggle span::after{top:6px}
body.nav-open .menu-toggle span{background:transparent}
body.nav-open .menu-toggle span::before{top:0;transform:rotate(45deg)}
body.nav-open .menu-toggle span::after{top:0;transform:rotate(-45deg)}
@media (max-width:940px){
  .menu-toggle{display:flex}
  .nav{position:fixed;inset:72px 0 auto 0;flex-direction:column;align-items:stretch;background:#fff;
    border-bottom:1px solid var(--line);padding:12px 24px 20px;gap:2px;box-shadow:var(--shadow);
    transform:translateY(-8px);opacity:0;visibility:hidden;transition:opacity .18s,transform .18s,visibility .18s;
    max-height:calc(100vh - 72px);overflow-y:auto}
  body.nav-open .nav{opacity:1;visibility:visible;transform:translateY(0)}
  .nav a{padding:13px 14px;font-size:15px;white-space:normal}
  .nav .progress-chip{margin:8px 0 0;justify-content:center}
}
@media (max-width:400px){
  .wrap{padding:0 16px}
  .brand img{height:36px}
  .brand-text .bt-1{font-size:13px}
  .brand-text .bt-2{font-size:8.5px}
  .header-inner{height:64px}
  .nav{inset:64px 0 auto 0;padding:12px 16px 18px}
}

/* ------------------------------------------------------------- type */
h1{font-family:var(--font-display);font-weight:700;letter-spacing:-.02em;
  font-size:clamp(29px,4.2vw,46px);line-height:1.08;color:var(--navy-900);margin:0 0 16px}
h2{font-family:var(--font-display);font-weight:700;letter-spacing:-.015em;
  font-size:clamp(22px,2.9vw,31px);line-height:1.18;color:var(--navy-900);margin:0 0 14px}
h3{font-family:var(--font-display);font-weight:700;font-size:18.5px;line-height:1.3;color:var(--navy-900);margin:0 0 9px}
h4{font-family:var(--font-display);font-weight:700;font-size:15.5px;color:var(--navy-900);margin:0 0 7px}
p{margin:0 0 14px}p:last-child{margin-bottom:0}
.kicker{display:inline-flex;align-items:center;gap:10px;font-size:12px;font-weight:700;
  letter-spacing:.11em;text-transform:uppercase;color:var(--red-700);margin-bottom:14px}
.kicker::before{content:"";width:24px;height:2px;background:var(--red-700);border-radius:2px}
.lead{font-size:16.5px;color:var(--muted);max-width:760px}
section{padding:64px 0}
section.tight{padding:44px 0}
section.alt{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
section.dark{background:linear-gradient(160deg,var(--navy-900),var(--navy-950));color:#fff}
section.dark h2,section.dark h3{color:#fff}
section.dark p,section.dark li{color:rgba(255,255,255,.75)}
section.dark .kicker{color:#ff9d92}section.dark .kicker::before{background:#ff9d92}
.divider{height:1px;background:var(--line);margin:36px 0}
.small{font-size:12.5px;color:var(--muted-2)}
.center{text-align:center}

/* ------------------------------------------------------------- buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 21px;border-radius:999px;
  font-weight:700;font-size:14.5px;border:1px solid transparent;transition:.16s}
.btn.primary{background:var(--navy-900);color:#fff}
.btn.primary:hover{background:var(--red-700);color:#fff}
.btn.ghost{background:#fff;border-color:var(--line-2);color:var(--navy-900)}
.btn.ghost:hover{border-color:var(--red-700);color:var(--red-700)}
.btn.teal{background:var(--teal-700);color:#fff}
.btn.teal:hover{background:var(--teal-600)}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn-row{display:flex;gap:12px;flex-wrap:wrap}

/* ------------------------------------------------------------- hero */
.hero{background:radial-gradient(ellipse at 12% -12%,rgba(36,64,110,.16),transparent 55%),
  radial-gradient(ellipse at 96% 108%,rgba(195,31,28,.10),transparent 50%),
  linear-gradient(160deg,#fff,var(--paper-2));border-bottom:1px solid var(--line)}
.hero .wrap{padding-top:62px;padding-bottom:62px}
.hero-grid{display:grid;grid-template-columns:1.3fr .8fr;gap:44px;align-items:center}
@media (max-width:860px){.hero-grid{grid-template-columns:1fr;gap:28px}.hero-art{display:none}}
.hero-art{display:flex;justify-content:center}
.hero-art img{width:min(260px,72%)}

/* ------------------------------------------------------------- grids/cards */
.grid{display:grid;gap:20px}
.grid > *{min-width:0}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:940px){.g3,.g4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:660px){.g2,.g3,.g4{grid-template-columns:1fr}}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-sm)}
.card p{font-size:14px;color:var(--muted)}
.card.rule-navy{border-top:3px solid var(--navy-700)}
.card.rule-red{border-top:3px solid var(--red-700)}
.card.rule-teal{border-top:3px solid var(--teal-700)}
.card.rule-amber{border-top:3px solid var(--amber-700)}
section.dark .card{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.15)}
section.dark .card p{color:rgba(255,255,255,.72)}

/* ------------------------------------------------------------- pills */
.pill{display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;
  font-size:11.5px;font-weight:700;border:1px solid transparent}
.pill .dot{width:6px;height:6px;border-radius:50%}
.pill.navy{background:var(--navy-100);color:var(--navy-800);border-color:#dde4f2}.pill.navy .dot{background:var(--navy-700)}
.pill.red{background:var(--red-050);color:var(--red-700);border-color:#f6d3d1}.pill.red .dot{background:var(--red-700)}
.pill.teal{background:var(--teal-050);color:var(--teal-700);border-color:#c9e3e3}.pill.teal .dot{background:var(--teal-700)}
.pill.green{background:var(--green-050);color:var(--green-700);border-color:#caead5}.pill.green .dot{background:var(--green-700)}
.pill.amber{background:var(--amber-050);color:var(--amber-700);border-color:#f1dca7}.pill.amber .dot{background:var(--amber-700)}
.pill.muted{background:#eef0f3;color:var(--muted);border-color:var(--line-2)}.pill.muted .dot{background:var(--muted-2)}
.pill-row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
@media (max-width:520px){.pill{white-space:normal}}

/* ------------------------------------------------------------- track / lesson cards */
.track{margin-bottom:42px}
.track-head{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
  padding-bottom:14px;border-bottom:2px solid var(--navy-900);margin-bottom:18px;flex-wrap:wrap}
.track-head .th-l{flex:1 1 340px;min-width:0}
.track-head .th-num{font-family:var(--font-display);font-size:12px;font-weight:700;
  color:var(--red-700);letter-spacing:.08em;text-transform:uppercase;margin-bottom:5px}
.track-head h2{margin-bottom:6px;font-size:26px}
.track-head p{font-size:14px;color:var(--muted);margin:0;max-width:660px}
.track-head .th-r{flex:0 0 auto;text-align:right}
.track-head .th-count{font-family:var(--font-display);font-weight:700;font-size:15px;color:var(--navy-900)}
.track-head .th-sub{font-size:11.5px;color:var(--muted-2)}

.lesson-list{display:grid;gap:11px}
.lesson-card{display:flex;align-items:center;gap:16px;padding:15px 18px;border:1px solid var(--line);
  border-radius:var(--radius-sm);background:#fff;transition:.16s}
.lesson-card:hover{border-color:#c3d0e2;box-shadow:var(--shadow-sm);transform:translateX(2px)}
.lesson-card .lc-check{flex:0 0 26px;width:26px;height:26px;border-radius:50%;border:2px solid var(--line-2);
  display:flex;align-items:center;justify-content:center;font-size:14px;color:transparent}
.lesson-card.done .lc-check{background:var(--green-600);border-color:var(--green-600);color:#fff}
.lesson-card .lc-body{flex:1 1 auto;min-width:0}
.lesson-card .lc-id{font-family:var(--mono);font-size:11px;color:var(--muted-2);font-weight:600}
.lesson-card .lc-title{font-family:var(--font-display);font-weight:700;font-size:15.5px;color:var(--navy-900);
  margin:1px 0 3px;line-height:1.28}
.lesson-card .lc-desc{font-size:12.8px;color:var(--muted);line-height:1.45}
.lesson-card .lc-meta{flex:0 0 auto;display:flex;align-items:center;gap:8px}
@media (max-width:660px){
  .lesson-card{flex-wrap:wrap;gap:12px}
  .lesson-card .lc-meta{flex-basis:100%;padding-left:42px}
}

/* ------------------------------------------------------------- progress */
.progress-hero{display:flex;align-items:center;gap:26px;flex-wrap:wrap}
.ring{flex:0 0 auto;position:relative;width:104px;height:104px}
.ring svg{transform:rotate(-90deg)}
.ring .ring-label{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center}
.ring .ring-pct{font-family:var(--font-display);font-weight:700;font-size:24px;color:var(--navy-900);line-height:1}
.ring .ring-sub{font-size:10px;color:var(--muted-2);font-weight:600;text-transform:uppercase;letter-spacing:.06em}
.progress-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;flex:1 1 380px}
@media (max-width:620px){.progress-stats{grid-template-columns:1fr 1fr}}
.pstat{border:1px solid var(--line);border-radius:var(--radius-sm);padding:14px 16px;background:#fff}
.pstat .num{font-family:var(--font-display);font-weight:700;font-size:23px;color:var(--navy-900);line-height:1}
.pstat .label{font-size:11.5px;color:var(--muted);margin-top:6px}

/* ------------------------------------------------------------- lesson page */
.lesson-head{background:linear-gradient(160deg,#fff,var(--paper-2));border-bottom:1px solid var(--line);
  padding:40px 0 32px}
.crumbs{font-size:12.5px;color:var(--muted-2);margin-bottom:14px}
.crumbs a{color:var(--muted)}
.crumbs span{margin:0 7px;color:var(--line-2)}
.lesson-meta{display:flex;gap:9px;flex-wrap:wrap;margin-top:16px}
.objectives{background:var(--navy-050);border:1px solid #dde4f2;border-radius:var(--radius);padding:20px 24px;margin:0 0 32px}
.objectives h4{margin-bottom:10px;font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:var(--navy-700)}
.objectives ul{margin:0;padding-left:20px}
.objectives li{font-size:14px;color:var(--muted);padding:3px 0}
.objectives li strong{color:var(--navy-900)}

.lesson-body{padding:40px 0 20px}
.lesson-body h2{margin-top:36px;scroll-margin-top:90px}
.lesson-body h2:first-child{margin-top:0}
.lesson-body h3{margin-top:26px}
.lesson-body p,.lesson-body li{font-size:15.5px;line-height:1.68;color:#333d4f}
.lesson-body ul,.lesson-body ol{padding-left:22px;margin:0 0 16px}
.lesson-body li{padding:4px 0}
.lesson-body li strong,.lesson-body p strong{color:var(--navy-900)}
.lesson-body code{font-family:var(--mono);font-size:.87em;background:var(--navy-050);
  border-radius:5px;padding:2px 6px;color:var(--navy-800)}

.callout{border-left:4px solid var(--red-700);background:var(--red-050);border-radius:0 12px 12px 0;
  padding:16px 20px;font-size:14.5px;line-height:1.58;margin:22px 0}
.callout.navy{border-left-color:var(--navy-700);background:var(--navy-050)}
.callout.teal{border-left-color:var(--teal-700);background:var(--teal-050)}
.callout.amber{border-left-color:var(--amber-700);background:var(--amber-050)}
.callout.green{border-left-color:var(--green-700);background:var(--green-050)}
.callout strong{color:var(--navy-900)}
.callout p{font-size:14.5px}

.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff;margin:20px 0}
table{width:100%;border-collapse:collapse;font-size:13.5px;min-width:560px}
th,td{text-align:left;padding:12px 15px;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.45}
th{font-size:10.5px;letter-spacing:.07em;text-transform:uppercase;color:var(--muted-2);font-weight:700;
  background:var(--paper-2);white-space:nowrap}
tr:last-child td{border-bottom:none}
td strong{color:var(--navy-900)}
td.mut{color:var(--muted)}
td.num{font-variant-numeric:tabular-nums;white-space:nowrap}
.scroll-hint{display:none;font-size:12px;color:var(--muted-2);margin:-12px 0 18px}
@media (max-width:760px){.scroll-hint{display:block}}

.takeaways{background:var(--navy-900);color:#fff;border-radius:var(--radius);padding:26px 28px;margin:36px 0 0}
.takeaways h3{color:#fff;margin-bottom:14px;font-size:17px}
.takeaways ul{margin:0;padding:0;list-style:none}
.takeaways li{position:relative;padding:7px 0 7px 26px;font-size:14.5px;color:rgba(255,255,255,.85);line-height:1.5}
.takeaways li::before{content:"✓";position:absolute;left:0;color:#5fd39b;font-weight:800}

.lesson-nav{display:flex;justify-content:space-between;gap:14px;margin:40px 0 0;flex-wrap:wrap}
.lesson-nav a{flex:1 1 240px;border:1px solid var(--line);border-radius:var(--radius-sm);padding:15px 18px;background:#fff}
.lesson-nav a:hover{border-color:#c3d0e2;box-shadow:var(--shadow-sm)}
.lesson-nav .ln-dir{font-size:11px;font-weight:700;letter-spacing:.07em;text-transform:uppercase;color:var(--red-700)}
.lesson-nav .ln-title{font-family:var(--font-display);font-weight:700;font-size:14.5px;color:var(--navy-900);margin-top:3px}
.lesson-nav a.next{text-align:right}
.lesson-nav .spacer{flex:1 1 240px}

.complete-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border:1px solid var(--line);border-radius:var(--radius);padding:20px 24px;background:var(--paper-2);margin-top:36px}
.complete-bar .cb-txt{flex:1 1 300px;min-width:0}
.complete-bar h4{margin-bottom:3px}
.complete-bar p{font-size:13px;color:var(--muted);margin:0}

/* ------------------------------------------------------------- quiz */
.quiz{border:2px solid var(--navy-900);border-radius:var(--radius);padding:26px 28px;margin:36px 0}
.quiz-head{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:6px;flex-wrap:wrap}
.quiz-head h3{margin:0;font-size:18px}
.quiz-score{font-family:var(--font-display);font-weight:700;font-size:14px;color:var(--muted)}
.quiz-intro{font-size:13.5px;color:var(--muted);margin-bottom:20px}
.qitem{padding:18px 0;border-top:1px solid var(--line)}
.qitem:first-of-type{border-top:none;padding-top:6px}
.qitem .qq{font-weight:700;font-size:15px;color:var(--navy-900);margin-bottom:12px;line-height:1.45}
.qopts{display:grid;gap:8px}
.qopt{display:flex;align-items:flex-start;gap:11px;padding:12px 15px;border:1.5px solid var(--line-2);
  border-radius:10px;background:#fff;text-align:left;font-size:14px;line-height:1.45;color:var(--ink);
  width:100%;transition:.14s}
.qopt:hover:not(:disabled){border-color:var(--navy-700);background:var(--navy-050)}
.qopt .qmark{flex:0 0 20px;width:20px;height:20px;border-radius:50%;border:2px solid var(--line-2);
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:800;color:transparent;margin-top:1px}
.qopt.correct{border-color:var(--green-600);background:var(--green-050)}
.qopt.correct .qmark{background:var(--green-600);border-color:var(--green-600);color:#fff}
.qopt.wrong{border-color:var(--red-700);background:var(--red-050)}
.qopt.wrong .qmark{background:var(--red-700);border-color:var(--red-700);color:#fff}
.qopt:disabled{cursor:default}
.qfeed{margin-top:12px;padding:13px 16px;border-radius:10px;font-size:13.5px;line-height:1.55;display:none}
.qfeed.show{display:block}
.qfeed.ok{background:var(--green-050);border-left:4px solid var(--green-600)}
.qfeed.no{background:var(--amber-050);border-left:4px solid var(--amber-700)}
.qfeed strong{color:var(--navy-900)}

/* ------------------------------------------------------------- labs */
.lab{border:2px solid var(--teal-700);border-radius:var(--radius);overflow:hidden;margin:34px 0;background:#fff}
.lab-head{background:var(--teal-050);border-bottom:1px solid #c9e3e3;padding:18px 24px}
.lab-head .lab-tag{font-size:10.5px;font-weight:800;letter-spacing:.09em;text-transform:uppercase;color:var(--teal-700)}
.lab-head h3{margin:5px 0 4px;font-size:19px}
.lab-head p{font-size:13.5px;color:var(--muted);margin:0}
.lab-body{padding:24px}
.lab-note{background:var(--amber-050);border-top:1px solid #f1dca7;padding:13px 24px;font-size:12.5px;
  color:var(--amber-700);line-height:1.5}
.lab-note strong{color:#6b4d12}

.ctrl-grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));margin-bottom:20px}
.ctrl-grid > *{min-width:0}
.ctrl{min-width:0}
.ctrl label{display:block;font-size:10.5px;font-weight:700;letter-spacing:.07em;text-transform:uppercase;
  color:var(--muted-2);margin-bottom:6px}
.ctrl .readout{font-family:var(--font-display);font-weight:700;font-size:19px;color:var(--navy-900);margin-bottom:6px}
.ctrl input[type=range]{width:100%;max-width:100%;min-width:0;accent-color:var(--teal-700)}
.ctrl select,.ctrl input[type=number],.ctrl input[type=text]{width:100%;max-width:100%;min-width:0;padding:9px 11px;border:1px solid var(--line-2);
  border-radius:9px;font:inherit;font-size:14px;background:#fff;color:var(--ink)}
.ctrl .chk{display:flex;align-items:center;gap:8px;font-size:13.5px;font-weight:600;color:var(--ink);text-transform:none;letter-spacing:0}
.ctrl .chk input{width:auto;accent-color:var(--teal-700)}

.kpis{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));margin:18px 0}
.kpi{border:1px solid var(--line);border-radius:var(--radius-sm);padding:14px 16px;background:var(--paper-2)}
.kpi .kv{font-family:var(--font-display);font-weight:700;font-size:22px;color:var(--navy-900);line-height:1.1}
.kpi .kl{font-size:11px;color:var(--muted);margin-top:5px;line-height:1.35}
.kpi.good .kv{color:var(--green-700)}
.kpi.bad .kv{color:var(--red-700)}
.kpi.warn .kv{color:var(--amber-700)}

.verdict{display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;
  font-family:var(--font-display);font-weight:700;font-size:14px}
.verdict.ok{background:var(--green-050);color:var(--green-700);border:1px solid #caead5}
.verdict.no{background:var(--red-050);color:var(--red-700);border:1px solid #f2cecb}
.verdict.qI{background:var(--green-050);color:var(--green-700);border:1px solid #caead5}
.verdict.qII{background:var(--amber-050);color:var(--amber-700);border:1px solid #f1dca7}
.verdict.qIII{background:var(--navy-100);color:var(--navy-800);border:1px solid #dde4f2}
.verdict.qIV{background:#f1f2f5;color:var(--muted);border:1px solid var(--line-2)}

.bssn-dim-label{font-size:11px;font-weight:800;letter-spacing:.07em;text-transform:uppercase;
  color:var(--muted-2);margin:18px 0 6px}
.bssn-dim-label:first-child{margin-top:0}
.bssn-row{padding:11px 0;border-bottom:1px solid var(--line)}
.bssn-row:last-child{border-bottom:none}
.bssn-row .br-head{display:flex;justify-content:space-between;align-items:baseline;gap:10px;margin-bottom:5px}
.bssn-row .br-name{font-weight:700;color:var(--navy-900);font-size:13.5px;line-height:1.3}
.bssn-row .br-val{font-family:var(--font-display);font-weight:700;color:var(--teal-700);
  font-size:12.5px;white-space:nowrap;flex:0 0 auto}
.bssn-row input[type=range]{width:100%;max-width:100%;min-width:0;accent-color:var(--teal-700);margin:5px 0}
.bssn-row .br-level{font-size:12px;color:var(--muted);line-height:1.42}

.trace{background:var(--navy-950);border-radius:11px;padding:16px 18px;font-family:var(--mono);
  font-size:12.2px;line-height:1.8;color:#cdd8ee;overflow-x:auto;white-space:pre-wrap;word-break:break-word}
.trace .t-ok{color:#7fd99a}.trace .t-red{color:#ff9d92}.trace .t-dim{color:#6b7690}
.trace .t-accent{color:#8fd6d0}.trace .t-amber{color:#f0c479}

.bars{display:flex;align-items:flex-end;gap:8px;height:170px;padding:12px 0;border-bottom:1px solid var(--line)}
.bar-col{flex:1 1 0;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;gap:6px;min-width:0}
.bar-col .bar{width:100%;border-radius:6px 6px 0 0;background:var(--navy-700);min-height:3px;transition:height .4s ease}
.bar-col .bar.red{background:var(--red-700)}
.bar-col .bar.teal{background:var(--teal-700)}
.bar-col .bar.amber{background:var(--amber-700)}
.bar-col .bar.green{background:var(--green-600)}
.bar-col .bv{font-family:var(--font-display);font-weight:700;font-size:11.5px;color:var(--navy-900)}
.bar-labels{display:flex;gap:8px;margin-top:8px}
.bar-labels div{flex:1 1 0;text-align:center;font-size:10.5px;color:var(--muted);line-height:1.3;min-width:0;word-break:break-word}

/* ------------------------------------------------------------- glossary */
.gsearch{width:100%;padding:14px 18px;border:1px solid var(--line-2);border-radius:999px;
  font:inherit;font-size:15px;margin-bottom:26px}
.gitem{border-bottom:1px solid var(--line);padding:18px 0}
.gitem h4{margin-bottom:5px;font-size:16px}
.gitem p{font-size:14px;color:var(--muted);margin:0}
.gitem .gterm-tag{font-size:10.5px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;
  color:var(--red-700);margin-bottom:4px}

/* ------------------------------------------------------------- footer */
.site-footer{background:var(--navy-950);color:rgba(255,255,255,.7);padding:48px 0 28px;font-size:13.5px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:34px;margin-bottom:30px}
@media (max-width:780px){.footer-grid{grid-template-columns:1fr;gap:24px}}
.site-footer h4{color:#fff;font-size:12.5px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:11px}
.site-footer a{color:rgba(255,255,255,.72)}
.site-footer a:hover{color:#fff}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{padding:5px 0}
.footer-brand img{height:48px;width:auto;margin-bottom:13px;opacity:.95}
.footer-brand p{color:rgba(255,255,255,.6);font-size:13px;max-width:330px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding-top:20px;display:flex;
  justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:rgba(255,255,255,.5)}
.disclaimer{background:var(--navy-050);border-top:1px solid var(--line);padding:20px 0;
  font-size:12.8px;color:var(--muted);line-height:1.6}
.disclaimer strong{color:var(--navy-900)}

@media print{.site-header,.site-footer,.menu-toggle,.lesson-nav,.complete-bar{display:none}}