:root{
  --green:#2e7d54; --green-dark:#1b5e3a; --teal:#0f8a8a; --teal-light:#e0f5f3;
  --gold:#facc15; --ink:#1f2933; --muted:#52606d; --line:#d9e2ec; --bg:#f4f7f6;
  --ok:#16a34a; --bad:#dc2626; --lock:#94a3b8;
}
*{box-sizing:border-box}
body{font-family:"Segoe UI",Helvetica,Arial,sans-serif;color:var(--ink);line-height:1.6;margin:0;background:var(--bg)}
a{color:var(--teal)}
.wrap{max-width:1000px;margin:0 auto;padding:0 20px}
.btn{display:inline-block;background:var(--green-dark);color:#fff;border:0;padding:12px 22px;border-radius:9px;font-size:1rem;font-weight:600;cursor:pointer;text-decoration:none}
.btn:hover{background:#14502f}
.btn.gold{background:var(--gold);color:#1f2933}
.btn.ghost{background:#fff;color:var(--green-dark);border:1.5px solid var(--green-dark)}
.btn:disabled{background:var(--lock);cursor:not-allowed}
.btn.lg{padding:15px 30px;font-size:1.08rem}
/* top bar */
.topbar{background:linear-gradient(135deg,var(--green-dark),var(--teal));color:#fff}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.topbar .brand{font-weight:700;letter-spacing:.02em;color:#fff;text-decoration:none;font-size:1.05rem}
.topbar .brand small{display:block;font-weight:400;font-size:.66rem;letter-spacing:.16em;text-transform:uppercase;opacity:.85}
.topbar nav a{color:#fff;text-decoration:none;margin-left:18px;font-size:.92rem;opacity:.92}
.topbar nav a:hover{opacity:1;text-decoration:underline}
.goldline{height:5px;background:var(--gold)}
/* cards / layout */
.card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px;margin:18px 0;box-shadow:0 1px 3px rgba(0,0,0,.04)}
.center{max-width:440px;margin:48px auto}
h1{font-size:1.9rem;margin:.2em 0 .4em}
h2{color:var(--green-dark)}
.muted{color:var(--muted)}
.eyebrow{letter-spacing:.16em;text-transform:uppercase;font-size:.72rem;color:var(--teal);font-weight:700;margin:0 0 6px}
label{display:block;font-weight:600;font-size:.9rem;margin:14px 0 5px}
input[type=text],input[type=email],input[type=password]{width:100%;padding:11px 13px;border:1.5px solid var(--line);border-radius:9px;font-size:1rem}
input:focus{outline:none;border-color:var(--teal)}
.row2{display:flex;gap:12px}.row2>div{flex:1}
.msg{padding:11px 14px;border-radius:9px;margin:14px 0;font-size:.93rem;display:none}
.msg.err{background:#fef2f2;border:1px solid #fecaca;color:#b91c1c;display:block}
.msg.ok{background:#ecfdf5;border:1px solid #a7f3d0;color:#047857;display:block}
.disclaimer{background:#fff7ed;border:1px solid #fed7aa;border-left:5px solid #f59e0b;border-radius:10px;padding:14px 18px;margin:18px 0;font-size:.9rem}
.disclaimer h3{color:#b45309;margin:0 0 6px}
/* module list */
.mod{display:flex;align-items:center;gap:16px;border:1px solid var(--line);border-radius:12px;padding:16px 20px;margin:12px 0;background:#fff}
.mod .badge{width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;color:#fff;background:var(--teal);flex:none}
.mod.locked{opacity:.6}
.mod.locked .badge{background:var(--lock)}
.mod.done .badge{background:var(--ok)}
.mod .grow{flex:1}
.mod .mt{font-weight:700}
.mod .sub{font-size:.85rem;color:var(--muted)}
.chk{font-size:.8rem;color:var(--muted);margin-top:4px}
.chk b{color:var(--green-dark)}
.progress{height:8px;background:var(--teal-light);border-radius:99px;overflow:hidden;margin-top:8px}
.progress > i{display:block;height:100%;background:var(--green)}
/* player */
.player{display:grid;grid-template-columns:1fr;gap:0}
.slidebox{background:#fff;border:1px solid var(--line);border-radius:14px;padding:34px 40px;min-height:320px}
.slidenav{display:flex;align-items:center;justify-content:space-between;margin-top:16px;gap:12px}
.slidecount{font-size:.85rem;color:var(--muted)}
.audiobar{display:flex;align-items:center;gap:12px;background:var(--teal-light);border-radius:10px;padding:10px 14px;margin:14px 0}
.audiobar audio{flex:1}
.dot{display:inline-block;width:9px;height:9px;border-radius:50%;background:var(--lock);margin:0 3px}
.dot.done{background:var(--green)}
.dot.cur{background:var(--gold)}
/* slide inner content (from curriculum) */
.slidebox h2{margin-top:0;font-size:1.5rem}
.slidebox .lead{font-size:1.1rem;color:var(--muted)}
.slidebox ul.clean,.slidebox ul{padding-left:20px}
.slidebox .snum,.slidebox .slide-head,.slidebox .slidehead,.slidebox .slide-tag{display:inline-block;background:var(--green-dark);color:#fff;font-size:.68rem;font-weight:700;letter-spacing:.08em;padding:3px 11px;border-radius:99px;margin-bottom:10px}
.slidebox table{border-collapse:collapse;width:100%;margin:12px 0}
.slidebox th,.slidebox td{border:1px solid var(--line);padding:8px 10px;text-align:left;font-size:.95rem}
.slidebox .card{box-shadow:none}
/* quiz */
.q{border:1px solid var(--line);border-left:5px solid var(--teal);border-radius:10px;padding:16px 20px;margin:14px 0;background:#fff}
.q .stem{font-weight:600;margin:0 0 10px}
.q label.opt{display:block;font-weight:400;padding:9px 12px;border:1px solid var(--line);border-radius:8px;margin:6px 0;cursor:pointer}
.q label.opt:hover{border-color:var(--teal)}
.q input{margin-right:9px}
.scorebox{text-align:center;padding:26px}
.scorebox .big{font-size:3rem;font-weight:800}
.pass{color:var(--ok)}.fail{color:var(--bad)}
.countdown{font-weight:700;color:#b45309}
footer.foot{text-align:center;color:var(--muted);font-size:.8rem;padding:30px 0}
@media(max-width:640px){.slidebox{padding:22px}.row2{flex-direction:column}}