:root{
  --brand:#14284B; --brand-dark:#0d1a33; --brand-light:#e7ecf5;
  --accent:#C8102E; --accent-strong:#9E0E26; --accent-light:#fdeaed; --warn:#b45309; --warn-light:#fef3c7;
  --good:#15803d; --good-light:#dcfce7; --bad:#b45309; --bad-light:#fde8cf;
  --ink:#0f172a; --body:#334155; --muted:#64748b; --line:#e2e8f0; --surface:#f8fafc; --white:#fff;
  --font:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  --r:14px; --r-lg:22px; --shadow:0 10px 25px rgba(15,23,42,.08),0 4px 10px rgba(15,23,42,.04);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}
body{font-family:var(--font);color:var(--body);background:var(--surface);line-height:1.7;font-size:17px;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{color:var(--ink);line-height:1.2;font-weight:800;letter-spacing:-.02em}
a{color:var(--brand)}
.skip-link{position:absolute;left:8px;top:-60px;background:var(--brand);color:#fff;padding:10px 16px;border-radius:8px;text-decoration:none;z-index:200;transition:top .15s}
.skip-link:focus{top:8px}
:focus-visible{outline:3px solid var(--brand);outline-offset:3px;border-radius:6px}

/* Progress bar */
.progress-wrap{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.95);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.progress-inner{max-width:820px;margin:0 auto;padding:12px 24px;display:flex;align-items:center;gap:14px}
.brand{display:flex;align-items:center;gap:9px;font-weight:800;color:var(--ink);font-size:1rem;text-decoration:none;flex:none}
.brand-mark{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand),var(--accent));color:#fff;font-weight:800;font-size:.95rem}
.brand span b{color:var(--accent-strong);font-weight:800}
.pbar{flex:1;height:8px;background:var(--line);border-radius:99px;overflow:hidden}
.pbar>i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--brand),var(--accent));border-radius:99px;transition:width .5s ease}
.pct{font-size:.82rem;font-weight:700;color:var(--muted);flex:none;min-width:64px;text-align:right}

.wrap{max-width:820px;margin:0 auto;padding:0 24px 80px}

/* Lesson header */
.lhead{background:linear-gradient(150deg,var(--brand),#0d1a33);color:#fff;border-radius:0 0 var(--r-lg) var(--r-lg);padding:34px 30px 30px;margin-bottom:28px}
.crumb{font-size:.8rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:#f6a9b3;margin-bottom:10px}
.lhead h1{color:#fff;font-size:clamp(1.6rem,4vw,2.3rem);margin-bottom:12px}
.meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.chip{background:rgba(255,255,255,.14);border:1px solid rgba(200,16,46,.5);color:#fff;font-size:.82rem;font-weight:600;padding:6px 12px;border-radius:99px;display:inline-flex;align-items:center;gap:6px}

section{background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:26px 26px;margin-bottom:20px;box-shadow:var(--shadow)}
.kicker{display:inline-block;font-weight:700;font-size:.75rem;letter-spacing:.08em;text-transform:uppercase;color:var(--accent-strong);margin-bottom:10px}
section h2{font-size:1.4rem;margin-bottom:12px}
section h3{font-size:1.12rem;margin:18px 0 6px}
p{margin-bottom:12px}
.lead{font-size:1.12rem;color:var(--muted)}
ul,ol{margin:0 0 12px 22px}
li{margin-bottom:7px}

/* Objectives */
.objectives{list-style:none;margin-left:0}
.objectives li{position:relative;padding:10px 0 10px 34px;border-bottom:1px solid var(--line)}
.objectives li:last-child{border-bottom:0}
.objectives li::before{content:"✓";position:absolute;left:0;top:9px;width:22px;height:22px;background:var(--accent-light);color:var(--accent-strong);border-radius:50%;display:grid;place-items:center;font-weight:800;font-size:.8rem}

/* Callouts */
.callout{border-radius:var(--r);padding:16px 18px;margin:16px 0;border-left:5px solid}
.callout h4{font-size:1rem;margin-bottom:4px}
.c-good{background:var(--good-light);border-color:var(--good)} .c-good h4{color:var(--good)}
.c-bad{background:var(--bad-light);border-color:var(--bad)} .c-bad h4{color:var(--bad)}
.c-warn{background:var(--warn-light);border-color:var(--warn)} .c-warn h4{color:var(--warn)}
.c-tip{background:var(--brand-light);border-color:var(--brand)} .c-tip h4{color:var(--brand)}
.callout ul{margin-bottom:0}

/* Two-col do/don't */
.split{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:16px 0}
@media(max-width:600px){.split{grid-template-columns:1fr}}
.split .callout{margin:0}

/* Active recall check */
.check{background:var(--surface);border:1px dashed var(--brand);border-radius:var(--r);padding:18px;margin:18px 0}
.check .kicker{color:var(--brand)}
.check .q{font-weight:700;color:var(--ink);margin-bottom:12px}
.opts{display:grid;gap:8px}
.opt{display:block;width:100%;text-align:left;background:#fff;border:2px solid var(--line);border-radius:10px;padding:12px 14px;font:inherit;font-size:.98rem;color:var(--body);cursor:pointer;transition:border-color .15s,background .15s}
.opt:hover{border-color:var(--brand)}
.opt.correct{border-color:var(--good);background:var(--good-light);color:var(--good);font-weight:600}
.opt.wrong{border-color:var(--bad);background:var(--bad-light);color:var(--bad)}
.opt:disabled{cursor:default}
.fb{margin-top:12px;font-size:.95rem;padding:12px 14px;border-radius:10px;display:none}
.fb.show{display:block}
.fb.ok{background:var(--good-light);color:#14532d}
.fb.no{background:var(--warn-light);color:#7c2d12}

/* Scenario */
.scenario{background:linear-gradient(160deg,#f0fdfa,#eef2ff);border:1px solid var(--line)}
.persona{display:flex;gap:14px;align-items:center;margin-bottom:14px}
.avatar{width:52px;height:52px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--brand));color:#fff;display:grid;place-items:center;font-weight:800;font-size:1.3rem;flex:none}
.persona b{color:var(--ink)}

/* Quiz */
.quiz .q-block{padding:16px 0;border-bottom:1px solid var(--line)}
.quiz .q-block:last-of-type{border-bottom:0}
.qnum{font-size:.78rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--accent-strong)}
.result{display:none;text-align:center;padding:22px;border-radius:var(--r);margin-top:12px}
.result.show{display:block}
.result.pass{background:var(--good-light)} .result.fail{background:var(--warn-light)}
.result .score{font-size:2.4rem;font-weight:800;color:var(--ink)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:50px;padding:13px 26px;border-radius:12px;font-weight:700;font-size:1rem;text-decoration:none;cursor:pointer;border:2px solid transparent;background:var(--brand);color:#fff;transition:background .15s}
.btn:hover{background:var(--brand-dark)}
.btn[disabled]{opacity:.5;cursor:default}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--line)}

/* Recap + next */
.recap li{margin-bottom:9px}
.nextbar{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:18px 22px;box-shadow:var(--shadow)}
.cert-note{display:flex;gap:10px;align-items:flex-start;font-size:.9rem;color:var(--muted);margin-top:16px}

/* Quality footer */
.qbadge{margin-top:26px;background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:18px 22px}
.qbadge .kicker{color:var(--brand)}
.qbadge ul{list-style:none;margin:10px 0 0;display:grid;grid-template-columns:1fr 1fr;gap:8px}
@media(max-width:600px){.qbadge ul{grid-template-columns:1fr}}
.qbadge li{position:relative;padding-left:26px;font-size:.9rem;color:var(--body);margin:0}
.qbadge li::before{content:"✓";position:absolute;left:0;color:var(--accent-strong);font-weight:800}
.samp{background:var(--warn-light);color:#7c2d12;text-align:center;font-size:.85rem;font-weight:600;padding:8px;border-radius:8px;margin-bottom:18px}
footer.foot{text-align:center;color:var(--muted);font-size:.82rem;margin-top:30px}
h1,h2,h3,h4{font-family:"Fraunces",Georgia,serif;font-weight:600;letter-spacing:-.01em}

/* ---- course hub + module nav ---- */
.mod-list{display:grid;gap:12px;margin-top:6px}
.mod-card{display:flex;gap:16px;align-items:flex-start;padding:16px 18px;border:1px solid var(--line);border-radius:var(--r);background:var(--white);text-decoration:none;transition:border-color .15s,box-shadow .15s}
.mod-card:hover{border-color:var(--brand);box-shadow:var(--shadow)}
.mod-num{flex:none;width:40px;height:40px;border-radius:10px;background:var(--brand-light);color:var(--brand);font-weight:700;font-size:1.05rem;display:grid;place-items:center;font-family:"Fraunces",Georgia,serif}
.mod-card.done .mod-num{background:var(--good-light);color:var(--good)}
.mod-body{flex:1;min-width:0}
.mod-body h3{font-size:1.12rem;margin:0 0 3px}
.mod-body p{margin:0;color:var(--muted);font-size:.93rem}
.mod-meta{flex:none;font-size:.8rem;color:var(--muted);font-weight:600;white-space:nowrap;padding-top:3px}
.modnav{display:flex;justify-content:space-between;gap:12px;margin-top:26px}
.modnav a{flex:1;border:1px solid var(--line);border-radius:var(--r);padding:14px 16px;text-decoration:none;background:var(--white)}
.modnav a:hover{border-color:var(--brand)}
.modnav .mn-dir{font-size:.75rem;color:var(--muted);font-weight:700;text-transform:uppercase;letter-spacing:.05em}
.modnav .mn-ttl{color:var(--ink);font-weight:600;font-size:.95rem}
.modnav .next{text-align:right}
.modnav a.disabled{opacity:.4;pointer-events:none}