:root{
  --ink:#14201c; --muted:#5b6b64; --brand:#0f4c5c; --brand2:#1a7a6d; --bg:#f7faf9; --card:#fff;
  --line:#d7e2dd; --warn:#8a5a00; --danger:#8b1e1e; --ok:#1b6b3a; --focus:#0b6e4f;
  --radius:12px; --shadow:0 8px 24px rgba(15,76,92,.08);
  font-family:"Segoe UI",system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box} html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);line-height:1.55}
a{color:var(--brand2)} a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:3px solid var(--focus);outline-offset:2px}
.skip{position:absolute;left:-999px;top:auto;width:1px;height:1px;overflow:hidden}
.skip:focus{left:1rem;top:1rem;width:auto;height:auto;background:#fff;padding:.5rem 1rem;z-index:99}
.wrap{max-width:1040px;margin:0 auto;padding:0 1.25rem}
header.site{background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
header.site .inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.85rem 0}
.logo{font-weight:750;color:var(--brand);text-decoration:none;font-size:1.15rem;letter-spacing:.01em}
nav a{margin-left:1rem;text-decoration:none;color:var(--ink);font-weight:600;font-size:.95rem}
nav a:hover{color:var(--brand2)}
.hero{padding:3rem 0 2rem}
.hero h1{font-size:clamp(1.8rem,4vw,2.6rem);line-height:1.15;margin:0 0 .75rem;color:var(--brand)}
.hero p.lead{font-size:1.15rem;color:var(--muted);max-width:40rem}
.badge{display:inline-block;background:#e6f3f0;color:var(--brand);font-weight:700;font-size:.8rem;padding:.25rem .6rem;border-radius:999px;margin-bottom:.75rem}
.grid{display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));margin:1.5rem 0}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:1.15rem 1.25rem;box-shadow:var(--shadow)}
.card h3{margin:.2rem 0 .4rem;font-size:1.05rem}
.muted{color:var(--muted)} .small{font-size:.9rem}
.btn{display:inline-block;background:var(--brand);color:#fff;border:none;border-radius:10px;padding:.7rem 1.15rem;font-weight:700;text-decoration:none;cursor:pointer}
.btn:hover{background:#0c3d4a}.btn.secondary{background:#fff;color:var(--brand);border:2px solid var(--brand)}
.btn:disabled{opacity:.55;cursor:not-allowed}
label{display:block;font-weight:650;margin:.85rem 0 .35rem}
input,select,textarea{width:100%;padding:.65rem .75rem;border:1px solid var(--line);border-radius:8px;font:inherit;background:#fff}
.form-card{max-width:520px}
.alert{padding:.75rem 1rem;border-radius:8px;margin:1rem 0}
.alert.err{background:#fdecec;color:var(--danger);border:1px solid #f3c4c4}
.alert.ok{background:#e8f6ee;color:var(--ok);border:1px solid #b7e0c5}
.alert.warn{background:#fff6e5;color:var(--warn);border:1px solid #f0d9a0}
footer.site{margin-top:3rem;padding:2rem 0;border-top:1px solid var(--line);color:var(--muted);font-size:.9rem}
.disclaimer{font-size:.85rem;color:var(--muted);border-left:3px solid var(--line);padding-left:.75rem;margin:1.25rem 0}
table{width:100%;border-collapse:collapse;background:var(--card)}
th,td{text-align:left;padding:.55rem .6rem;border-bottom:1px solid var(--line);font-size:.92rem;vertical-align:top}
th{background:#eef5f3;color:var(--brand)}
.pill{display:inline-block;padding:.1rem .45rem;border-radius:999px;font-size:.75rem;font-weight:700}
.pill.ok{background:#e8f6ee;color:var(--ok)}.pill.pend{background:#fff6e5;color:var(--warn)}.pill.inv{background:#e8eef6;color:#1d4e89}
.progress{height:10px;background:#e4eeea;border-radius:999px;overflow:hidden;margin:.5rem 0 1rem}
.progress>span{display:block;height:100%;background:var(--brand2)}
.module{border:1px solid var(--line);border-radius:var(--radius);padding:1rem;margin:1rem 0;background:var(--card)}
.module h2{margin-top:0;color:var(--brand);font-size:1.2rem}
.quiz{background:#f3f8f6;padding:1rem;border-radius:8px;margin-top:1rem}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}
@media (max-width:640px){nav a{margin-left:.65rem;font-size:.85rem}}