:root{
  --ink:#1d1530; --muted:#5b5470; --line:#e3dfeb; --bg:#f7f5fb; --card:#ffffff;
  --brand:#5b21b6; --brand-2:#7c3aed; --brand-soft:#efe8fd; --ok:#0f7a45; --ok-soft:#e5f6ed;
  --bad:#b42318; --bad-soft:#fdecea; --warn:#8a5a00; --warn-soft:#fff4dc; --code:#1f1830; --code-ink:#ece8f6;
  --radius:12px; --shadow:0 1px 2px rgba(29,21,48,.06),0 4px 16px rgba(29,21,48,.06);
  --font: system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --mono: ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font:16px/1.6 var(--font);color:var(--ink);background:var(--bg)}
a{color:var(--brand)} a:hover{color:var(--brand-2)}
:focus-visible{outline:3px solid #f59e0b;outline-offset:2px;border-radius:4px}
.skip{position:absolute;left:-999px;top:0;background:#fff;padding:.5rem 1rem;z-index:100}
.skip:focus{left:8px;top:8px}
.sr-only{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
header.top{position:sticky;top:0;z-index:20;background:#1d1530;color:#fff;border-bottom:3px solid var(--brand-2)}
header.top .in{max-width:1180px;margin:0 auto;display:flex;align-items:center;gap:1rem;padding:.6rem 16px}
header.top .logo{font-weight:700;letter-spacing:.06em;color:#fff;text-decoration:none;display:flex;align-items:center;gap:.5rem}
header.top .logo span{color:#c4b5fd;font-weight:500;letter-spacing:0}
header.top nav{margin-left:auto;display:flex;gap:.25rem;flex-wrap:wrap}
header.top nav a,header.top nav button{color:#fff;text-decoration:none;background:none;border:0;font:inherit;padding:.4rem .7rem;border-radius:8px;cursor:pointer}
header.top nav a:hover,header.top nav button:hover,header.top nav a[aria-current="page"]{background:rgba(255,255,255,.12)}
main{max-width:1180px;margin:0 auto;padding:24px 16px 80px}
h1{font-size:clamp(1.5rem,3vw,2.1rem);line-height:1.25;margin:.2rem 0 1rem}
h2{font-size:1.35rem;margin:2rem 0 .75rem}
h3{font-size:1.1rem;margin:1.5rem 0 .5rem}
p{margin:.6rem 0}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}
.narrow{max-width:460px;margin:2rem auto}
.grid{display:grid;gap:16px}
@media(min-width:760px){.grid.cols-2{grid-template-columns:1fr 1fr}.grid.cols-3{grid-template-columns:repeat(3,1fr)}.grid.cols-4{grid-template-columns:repeat(4,1fr)}}
label{display:block;font-weight:600;margin:.8rem 0 .3rem}
input[type=email],input[type=password],input[type=text],input[type=number],textarea,select{
  width:100%;padding:.65rem .75rem;border:1px solid #cfc8de;border-radius:10px;font:inherit;background:#fff;color:var(--ink)}
textarea{font-family:var(--mono);font-size:.9rem}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;border:1px solid transparent;background:var(--brand);color:#fff;
  padding:.65rem 1.1rem;border-radius:10px;font:inherit;font-weight:600;cursor:pointer;text-decoration:none;min-height:44px}
.btn:hover{background:var(--brand-2);color:#fff}
.btn.secondary{background:#fff;color:var(--brand);border-color:#cbbcf6}
.btn.secondary:hover{background:var(--brand-soft)}
.btn.ghost{background:none;color:var(--brand);border-color:transparent}
.btn[disabled]{opacity:.55;cursor:not-allowed}
.row{display:flex;gap:.6rem;flex-wrap:wrap;align-items:center}
.muted{color:var(--muted)} .small{font-size:.875rem}
.msg{padding:.7rem 1rem;border-radius:10px;margin:.8rem 0}
.msg.ok{background:var(--ok-soft);color:var(--ok)} .msg.err{background:var(--bad-soft);color:var(--bad)} .msg.info{background:var(--brand-soft);color:var(--brand)}
.badge{display:inline-block;font-size:.75rem;font-weight:700;padding:.15rem .55rem;border-radius:99px;background:var(--brand-soft);color:var(--brand)}
.badge.ok{background:var(--ok-soft);color:var(--ok)} .badge.warn{background:var(--warn-soft);color:var(--warn)} .badge.bad{background:var(--bad-soft);color:var(--bad)}

/* module layout */
.layout{display:grid;gap:24px}
@media(min-width:980px){.layout{grid-template-columns:280px 1fr}}
.toc{position:relative}
@media(min-width:980px){.toc .card{position:sticky;top:76px}}
.toc ol{list-style:none;margin:0;padding:0}
.toc li a{display:flex;gap:.6rem;align-items:flex-start;padding:.55rem .6rem;border-radius:8px;text-decoration:none;color:var(--ink)}
.toc li a:hover{background:var(--brand-soft)}
.toc li a[aria-current="step"]{background:var(--brand-soft);font-weight:700}
.toc .dot{flex:none;width:22px;height:22px;border-radius:50%;border:2px solid #b9acd9;display:grid;place-items:center;font-size:.7rem;margin-top:2px}
.toc .done .dot{background:var(--ok);border-color:var(--ok);color:#fff}
.progressbar{height:10px;background:#ece7f6;border-radius:99px;overflow:hidden}
.progressbar>span{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--brand-2))}
.block{margin:1.2rem 0}
pre.code{background:var(--code);color:var(--code-ink);padding:14px 16px;border-radius:10px;overflow:auto;font:14px/1.5 var(--mono);margin:.4rem 0}
pre.out{background:#f1eff6;color:#2a2340;border-left:4px solid #b9acd9;padding:10px 14px;border-radius:6px;overflow:auto;font:13px/1.45 var(--mono);margin:.3rem 0}
code{font-family:var(--mono);background:#efeaf8;padding:.05rem .3rem;border-radius:4px;font-size:.92em}
pre code{background:none;padding:0}
.caption{font-size:.9rem;color:var(--muted)}
.callout{border-left:5px solid var(--brand-2);background:var(--brand-soft);padding:.8rem 1rem;border-radius:8px}
.callout.note{border-color:#0369a1;background:#e8f4fb}
.concepts dl{margin:0;display:grid;gap:10px}
@media(min-width:760px){.concepts dl{grid-template-columns:200px 1fr}}
.concepts dt{font-weight:700;color:var(--brand)} .concepts dd{margin:0}
.phases{display:grid;gap:10px}
@media(min-width:760px){.phases{grid-template-columns:repeat(3,1fr)}}
.phases .ph{border:1px solid var(--line);border-radius:10px;padding:12px;background:#fff}
.phases .ph h4{margin:0 0 .4rem;font-size:1rem;color:var(--brand)}
table.data{border-collapse:collapse;width:100%;font-size:.95rem}
table.data th,table.data td{border-bottom:1px solid var(--line);padding:.5rem .6rem;text-align:left;vertical-align:top}
table.data th{background:#f3effb}
.tablewrap{overflow-x:auto}
video{width:100%;border-radius:10px;background:#000;aspect-ratio:16/9}
.videocard h3{margin-top:0}

/* quiz */
fieldset.q{border:1px solid var(--line);border-radius:10px;padding:14px 16px;margin:12px 0;background:#fff}
fieldset.q legend{font-weight:700;padding:0 .3rem}
.opt{display:flex;gap:.6rem;align-items:flex-start;padding:.5rem .6rem;border-radius:8px;cursor:pointer;border:1px solid transparent}
.opt:hover{background:#f6f3fc}
.opt input{margin-top:.3rem;width:18px;height:18px;flex:none}
.opt.correct{background:var(--ok-soft);border-color:#9bd8b6}
.opt.wrong{background:var(--bad-soft);border-color:#f2b8b1}
.fb{margin-top:.6rem;padding:.6rem .8rem;border-radius:8px;font-size:.95rem}
.fb.ok{background:var(--ok-soft)} .fb.bad{background:var(--bad-soft)}
.hint{margin-top:.5rem}
.hint details summary{cursor:pointer;color:var(--brand);font-weight:600}
.score{font-size:1.15rem;font-weight:700}

/* walkthrough */
.wt-tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:10px}
.wt-tabs button{border:1px solid #cbbcf6;background:#fff;color:var(--brand);border-radius:99px;min-width:40px;min-height:40px;font-weight:700;cursor:pointer}
.wt-tabs button[aria-selected="true"]{background:var(--brand);color:#fff}
.wt-tabs button.seen:not([aria-selected="true"]){background:var(--ok-soft);border-color:#9bd8b6;color:var(--ok)}
.watch{background:var(--warn-soft);border-radius:8px;padding:.6rem .8rem;margin-top:.6rem}

/* scenario */
.sc-node{border:1px solid var(--line);border-radius:10px;padding:14px 16px;background:#fff}
.sc-choices{display:grid;gap:8px;margin-top:10px}
.sc-choices button{text-align:left;padding:.75rem .9rem;border:1px solid #cbbcf6;border-radius:10px;background:#fff;font:inherit;cursor:pointer;min-height:44px}
.sc-choices button:hover{background:var(--brand-soft)}
.sc-history{margin:0 0 12px;padding:0;list-style:none}
.sc-history li{border-left:4px solid #cbbcf6;padding:.4rem .8rem;margin:.4rem 0;background:#faf8fe;border-radius:0 8px 8px 0}

/* checklist */
.check{display:flex;gap:.6rem;align-items:flex-start;padding:.45rem 0}
.check input{width:20px;height:20px;margin-top:.2rem;flex:none}

/* dashboard */
.kpi{text-align:center}
.kpi .v{font-size:1.8rem;font-weight:800;color:var(--brand)}
.kpi .l{font-size:.85rem;color:var(--muted)}
.chart svg{width:100%;height:auto}
.legend{display:flex;gap:12px;flex-wrap:wrap;font-size:.85rem}
.legend i{display:inline-block;width:12px;height:12px;border-radius:3px;margin-right:4px;vertical-align:-1px}
footer.site{max-width:1180px;margin:0 auto;padding:24px 16px;color:var(--muted);font-size:.85rem}
.pyout{max-height:320px}
@media (prefers-reduced-motion: reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
/* prevent wide code blocks from stretching grid columns on small screens */
.layout>*,.grid>*,article,section,fieldset{min-width:0}
pre,table{max-width:100%}
fieldset.q{min-inline-size:0}
p code,li code,td code,.callout code{overflow-wrap:anywhere;word-break:break-word}
.toc summary{cursor:pointer;list-style:none;padding-bottom:.4rem}
.toc summary::-webkit-details-marker{display:none}
.toc summary::after{content:" ▾";color:var(--brand)}
.toc details[open] summary::after{content:" ▴"}
@media (max-width:640px){
  header.top .in{flex-wrap:wrap;gap:.3rem}
  header.top nav{margin-left:0;width:100%}
  header.top nav a,header.top nav button{padding:.3rem .55rem;font-size:.92rem}
}
pre > code{display:block;width:max-content;min-width:100%}
.opt code,label code,dd code,.watch code,.fb code,.sc-node code,.sc-choices code,h2 code,h3 code{overflow-wrap:anywhere;word-break:break-word}
main p,main li,main dd,main td,.callout,.watch,.opt,.fb{overflow-wrap:anywhere}
label,.btn,summary{overflow-wrap:anywhere}
.tablewrap{position:relative}
/* public course pages (site.php) */
main.seo{max-width:900px}
main.seo .card{margin:0 0 1rem}
main.seo h1{margin-top:0;line-height:1.25}
.facts{display:grid;grid-template-columns:max-content 1fr;gap:.35rem 1rem;margin:1rem 0}
.facts dt{font-weight:600;color:var(--muted)} .facts dd{margin:0}
@media (max-width:560px){.facts{grid-template-columns:1fr}.facts dd{margin-bottom:.4rem}}
ol.modules{padding-left:1.25rem} ol.modules h3{margin:.8rem 0 .2rem;font-size:1.05rem}
.seo-page header.top nav a{margin-left:.75rem}
main.seo .card>h2:first-child{margin-top:0}
.msg.warn{background:var(--warn-soft);color:var(--warn)}