:root{
  --blue:#2563eb; --indigo:#4f46e5; --purple:#7c3aed;
  --ink:#0f172a; --body:#334155; --muted:#64748b;
  --bg:#f6f7fb; --card:#ffffff; --line:#e6e8ef;
  --serif:'Playfair Display',Georgia,serif; --sans:'Inter',system-ui,sans-serif;
  --radius:16px; --shadow:0 10px 30px rgba(15,23,42,.06); --shadow-lg:0 20px 50px rgba(15,23,42,.12);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--sans);background:var(--bg);color:var(--body);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
a{color:inherit}
.wrap{max-width:1080px;margin:0 auto;padding:0 22px}

/* topbar */
.topbar{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.85);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--ink);text-decoration:none}
.brand .lrm{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--blue),var(--purple));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:13px}
.back{font-size:.9rem;font-weight:600;color:var(--blue);text-decoration:none;display:inline-flex;gap:.4rem;align-items:center}
.back:hover{text-decoration:underline}

/* hero */
.hero{position:relative;overflow:hidden;background:linear-gradient(135deg,#1e3a8a 0%,#4338ca 45%,#6d28d9 100%);color:#fff;padding:64px 0 72px}
.hero::after{content:"";position:absolute;inset:0;background:radial-gradient(600px 300px at 85% -10%,rgba(255,255,255,.18),transparent 60%);pointer-events:none}
.hero .wrap{position:relative}
.crumbs{font-size:.85rem;color:#c7d2fe;margin-bottom:18px}
.crumbs a{text-decoration:none}.crumbs a:hover{text-decoration:underline}
.hero h1{font-family:var(--serif);font-size:clamp(2.2rem,5vw,3.4rem);line-height:1.05;font-weight:800;margin-bottom:14px}
.hero .lead{max-width:60ch;color:#e0e7ff;font-size:1.05rem}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.chip{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);padding:.35rem .8rem;border-radius:999px;font-size:.82rem;font-weight:600;backdrop-filter:blur(4px)}
.hstats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:30px;max-width:620px}
.hstat{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);border-radius:14px;padding:14px;text-align:center}
.hstat b{display:block;font-family:var(--serif);font-size:1.7rem;line-height:1}
.hstat span{font-size:.72rem;text-transform:uppercase;letter-spacing:.5px;color:#c7d2fe}

/* sections */
.section{padding:40px 0}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:30px;margin-bottom:26px}
.eyebrow{display:inline-flex;align-items:center;gap:.5rem;font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:1.2px;color:var(--blue);margin-bottom:10px}
.eyebrow .dot{width:8px;height:8px;border-radius:50%;background:linear-gradient(135deg,var(--blue),var(--purple))}
h2.sec{font-family:var(--serif);font-size:1.7rem;color:var(--ink);margin-bottom:6px}
.card p{margin-bottom:12px}
.card p:last-child{margin-bottom:0}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.idtable{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.idtable div{padding:13px 16px;border-bottom:1px solid var(--line)}
.idtable div:nth-child(4n+1),.idtable div:nth-child(4n+2){background:#fafbff}
.idtable b{color:var(--ink)}
.note{background:#fffbeb;border:1px solid #fde68a;border-left:4px solid #f59e0b;border-radius:10px;padding:14px 16px;font-size:.92rem;color:#92400e;margin-top:14px}

/* accordion conteúdo */
.unit{border:1px solid var(--line);border-radius:14px;margin-bottom:12px;overflow:hidden;background:var(--card);transition:.2s}
.unit summary{list-style:none;cursor:pointer;padding:18px 20px;display:flex;align-items:center;gap:16px;font-weight:700;color:var(--ink)}
.unit summary::-webkit-details-marker{display:none}
.unit .num{flex-shrink:0;width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,var(--blue),var(--purple));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800}
.unit .utitle{flex:1}
.unit .uhours{font-size:.78rem;font-weight:600;color:var(--muted);background:#eef2ff;padding:.25rem .6rem;border-radius:999px}
.unit .chev{transition:.25s;color:var(--muted)}
.unit[open] .chev{transform:rotate(180deg)}
.unit .ubody{padding:0 20px 20px 72px;color:var(--body)}
.unit .ubody ul{margin:0;padding-left:18px}
.unit .ubody li{margin-bottom:6px}

/* avaliação */
.avtable{width:100%;border-collapse:collapse;font-size:.95rem;overflow:hidden;border-radius:12px;border:1px solid var(--line)}
.avtable th,.avtable td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line)}
.avtable thead th{background:linear-gradient(135deg,var(--blue),var(--indigo));color:#fff;font-weight:600;font-size:.82rem;text-transform:uppercase;letter-spacing:.5px}
.avtable tbody tr:nth-child(even){background:#fafbff}
.avtable .peso{font-weight:800;color:var(--purple)}
.rules{margin-top:16px;display:grid;gap:8px}
.rule{display:flex;gap:10px;align-items:flex-start;font-size:.92rem}
.rule svg{flex-shrink:0;width:18px;height:18px;color:var(--blue);margin-top:3px}

/* bibliografia */
.bib h4{color:var(--ink);font-size:.85rem;text-transform:uppercase;letter-spacing:1px;margin:18px 0 10px;color:var(--purple)}
.bib ul{list-style:none;display:grid;gap:10px}
.bib li{padding-left:22px;position:relative;font-size:.93rem}
.bib li::before{content:"📖";position:absolute;left:0;top:0}

/* QUIZ */
.quiz{background:linear-gradient(135deg,#0f172a,#1e1b4b);color:#fff;border-radius:20px;padding:34px;box-shadow:var(--shadow-lg)}
.quiz .eyebrow{color:#a5b4fc}
.quiz h2.sec{color:#fff}
.quiz .qsub{color:#c7d2fe;margin-bottom:22px}
.qprogress{height:8px;background:rgba(255,255,255,.12);border-radius:999px;overflow:hidden;margin-bottom:22px}
.qprogress span{display:block;height:100%;width:0;background:linear-gradient(90deg,#60a5fa,#a78bfa);transition:.4s}
.qcard{}
.qcount{font-size:.8rem;color:#a5b4fc;font-weight:600;margin-bottom:8px}
.qtext{font-size:1.18rem;font-weight:700;margin-bottom:18px;line-height:1.4}
.qopts{display:grid;gap:10px}
.qopt{text-align:left;background:rgba(255,255,255,.06);border:1.5px solid rgba(255,255,255,.14);color:#e2e8f0;padding:14px 16px;border-radius:12px;cursor:pointer;font-size:.97rem;font-family:inherit;transition:.15s;display:flex;align-items:center;gap:12px}
.qopt:hover:not(:disabled){border-color:#a78bfa;background:rgba(167,139,250,.12)}
.qopt .mark{flex-shrink:0;width:24px;height:24px;border-radius:50%;border:2px solid rgba(255,255,255,.3);display:flex;align-items:center;justify-content:center;font-size:.8rem;font-weight:800}
.qopt.correct{border-color:#34d399;background:rgba(52,211,153,.16)}
.qopt.correct .mark{border-color:#34d399;background:#34d399;color:#06281d}
.qopt.wrong{border-color:#f87171;background:rgba(248,113,113,.16)}
.qopt.wrong .mark{border-color:#f87171;background:#f87171;color:#2a0a0a}
.qopt:disabled{cursor:default}
.qfeedback{margin-top:16px;padding:14px 16px;border-radius:12px;font-size:.92rem;display:none}
.qfeedback.show{display:block}
.qfeedback.ok{background:rgba(52,211,153,.14);border:1px solid rgba(52,211,153,.4)}
.qfeedback.no{background:rgba(248,113,113,.14);border:1px solid rgba(248,113,113,.4)}
.qnav{margin-top:22px;display:flex;justify-content:flex-end}
.qbtn{background:linear-gradient(135deg,#3b82f6,#7c3aed);color:#fff;border:none;padding:.8rem 1.6rem;border-radius:12px;font-weight:700;font-family:inherit;cursor:pointer;font-size:.95rem;transition:.2s;opacity:.5;pointer-events:none}
.qbtn.ready{opacity:1;pointer-events:auto}
.qbtn.ready:hover{transform:translateY(-2px)}
.qresult{text-align:center;display:none}
.qresult.show{display:block}
.qresult .score{font-family:var(--serif);font-size:3.4rem;font-weight:800;background:linear-gradient(90deg,#60a5fa,#a78bfa);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.qresult .rmsg{color:#c7d2fe;margin:10px 0 22px;font-size:1.05rem}

.footer{background:#0f172a;color:#94a3b8;text-align:center;padding:30px 22px;font-size:.88rem;margin-top:30px}
.footer a{color:#a5b4fc;text-decoration:none}

@media(max-width:760px){
  .grid2,.idtable{grid-template-columns:1fr}
  .hstats{grid-template-columns:repeat(2,1fr)}
  .unit .ubody{padding-left:20px}
  .card{padding:22px}
  .quiz{padding:24px}
}

/* ===== índice de disciplinas ===== */
.dgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:22px}
.dcard{display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:26px;text-decoration:none;color:inherit;transition:.2s;border-top:4px solid var(--ac)}
.dcard:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.dcard-top{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:14px}
.dcourse{font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.5px;color:var(--ac);background:#f1f5f9;padding:.3rem .7rem;border-radius:999px}
.dcarga{font-size:.8rem;font-weight:700;color:var(--muted);white-space:nowrap}
.dcard h3{font-family:var(--serif);font-size:1.4rem;color:var(--ink);margin-bottom:8px;line-height:1.2}
.dcard p{font-size:.92rem;color:var(--body);margin-bottom:14px}
.dlink{font-weight:700;color:var(--ac)}