:root{
  --navy:#0e1d3a; --navy2:#16294d; --gold:#c8a44d; --gold-lt:#e7cf93;
  --ink:#1b2330; --muted:#5b6678; --line:#e7eaf0; --bg:#f4f6fa; --card:#fff;
  --err:#b4232a; --ok:#1f7a4d;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);font-family:'Inter',system-ui,sans-serif;color:var(--ink);line-height:1.55;}
a{color:var(--navy);}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:18px;
  background:linear-gradient(120deg,var(--navy),var(--navy2));padding:14px 26px;flex-wrap:wrap;}
.brand{font-weight:900;font-size:20px;letter-spacing:-.02em;color:#fff;text-decoration:none;}
.brand span{color:var(--gold);}
.topbar nav{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}
.topbar nav a{color:#dbe2ee;text-decoration:none;font-size:14px;font-weight:600;}
.topbar nav a:hover{color:#fff;}
.topbar .who{font-family:'JetBrains Mono',monospace;font-size:11px;color:#9fb0c9;}
.btn{background:var(--gold);color:#26200d !important;border:0;border-radius:9px;padding:9px 16px;
  font-weight:800;font-size:14px;cursor:pointer;text-decoration:none;display:inline-block;}
.btn:hover{filter:brightness(1.05);}
.btn-ghost{border:1px solid #46587a;border-radius:9px;padding:8px 14px;color:#dbe2ee !important;text-decoration:none;font-size:13px;}
.wrap{max-width:960px;margin:0 auto;padding:30px 20px 60px;}
h1{font-size:26px;font-weight:800;letter-spacing:-.02em;margin:0 0 6px;}
.muted{color:var(--muted);}
.small{font-size:12.5px;}
.flash{background:#eef7f1;border:1px solid #bfe6d0;color:var(--ok);padding:12px 16px;border-radius:10px;margin-bottom:18px;font-weight:600;}
.err{background:#fbecec;border:1px solid #f0c9c9;color:var(--err);padding:11px 15px;border-radius:9px;margin-bottom:14px;font-weight:600;}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:26px 28px;box-shadow:0 16px 36px -28px rgba(14,29,58,.35);}
.card.narrow{max-width:420px;margin:30px auto;}
.card h1{margin-bottom:18px;}
form label{display:block;font-size:13px;font-weight:600;color:#36404f;margin-bottom:14px;}
form input{display:block;width:100%;margin-top:6px;padding:11px 13px;border:1px solid var(--line);border-radius:9px;font-size:15px;font-family:inherit;}
form input:focus{outline:2px solid var(--gold-lt);border-color:var(--gold);}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px;margin-top:22px;}
.tile{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:24px 22px;text-decoration:none;color:var(--ink);
  font-weight:700;display:flex;align-items:center;min-height:84px;transition:.15s;}
.tile:hover{border-color:var(--gold);box-shadow:0 12px 26px -20px rgba(14,29,58,.4);transform:translateY(-1px);}
.foot{text-align:center;color:var(--muted);font-size:12.5px;padding:30px;}
/* ---- builder ---- */
.crumbs{font-size:13px;color:var(--muted);margin-bottom:10px;}
.crumbs a{color:var(--navy);text-decoration:none;font-weight:600;}
.section{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px 22px;margin-top:18px;}
.section h2{font-size:15px;margin:0 0 14px;letter-spacing:-.01em;}
.section h2 .count{color:var(--muted);font-weight:500;font-size:13px;}
.tbl{width:100%;border-collapse:collapse;font-size:14px;}
.tbl th{text-align:left;font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);border-bottom:1px solid var(--line);padding:8px 10px;}
.tbl td{border-bottom:1px solid var(--line);padding:9px 10px;vertical-align:middle;}
.tbl tr:last-child td{border-bottom:0;}
.tbl a{font-weight:600;text-decoration:none;}
.inline{display:flex;gap:10px;flex-wrap:wrap;align-items:flex-end;margin-top:14px;}
.inline label{margin:0;flex:1;min-width:140px;}
.inline input,.inline select,.inline textarea{margin-top:5px;}
select,textarea{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:9px;font-size:14.5px;font-family:inherit;background:#fff;}
textarea{min-height:120px;line-height:1.5;}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
@media(max-width:640px){.grid2{grid-template-columns:1fr}}
.btn-sm{background:var(--navy);color:#fff !important;border:0;border-radius:8px;padding:8px 14px;font-weight:700;font-size:13px;cursor:pointer;text-decoration:none;}
.btn-sm:hover{background:var(--navy2);}
.btn-out{background:#fff;border:1px solid var(--line);color:var(--navy) !important;border-radius:8px;padding:7px 12px;font-weight:600;font-size:13px;text-decoration:none;cursor:pointer;}
.danger{color:var(--err) !important;background:none;border:0;cursor:pointer;font-size:13px;font-weight:600;}
.pill{font-size:11px;font-weight:700;padding:3px 9px;border-radius:999px;text-transform:uppercase;letter-spacing:.04em;}
.pill-draft{background:#fff4d6;color:#8a6d23;}
.pill-published,.pill-active{background:#e7f6ee;color:#1f7a4d;}
.pill-archived{background:#fbe3ee;color:#a8336b;}
.pill-completed{background:#f3ead9;color:#8a6d23;}
.pill-scheduled{background:#e8eefb;color:#2c4ea0;}
.muted-empty{color:var(--muted);font-size:13.5px;padding:8px 0;}
.addlk{font-size:11px;font-weight:700;color:var(--navy);text-decoration:none;margin-left:6px;background:#eef2f8;border:1px solid #e0e7f1;border-radius:6px;padding:1px 7px;}
.addlk:hover{background:var(--gold);color:#26200d;border-color:var(--gold);}

/* ===== course studio (single-screen builder) ===== */
.studio{max-width:880px;}
.studio input,.studio select,.studio textarea{font-family:inherit;}
.studio select{width:auto;max-width:100%;}
.studio .bld-title,.studio .bld-lt,.studio .bld-ct,.studio .bld-qt,.studio .bld-ol,.studio .bld-qi{background:transparent;}
.studio .bld-lt,.studio .bld-ct,.studio .bld-qt{min-width:120px;}
.bld-head{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px 20px;margin-bottom:8px;}
.bld-title{display:block;width:100%;border:0;border-bottom:2px solid transparent;font-size:24px;font-weight:800;letter-spacing:-.02em;padding:4px 0;color:var(--ink);}
.bld-title:focus{outline:0;border-bottom-color:var(--gold);}
.bld-row{display:flex;gap:10px;margin:8px 0;align-items:center;}
.bld-sum{width:100%;border:1px solid var(--line);border-radius:8px;min-height:46px;padding:8px 10px;font-size:13.5px;color:#36404f;}
.bld-dur{border:1px solid var(--line);border-radius:8px;padding:6px 10px;font-size:13px;width:170px;}
.bld-pill{border:1px solid var(--line);border-radius:7px;padding:5px 8px;font-size:12px;background:#fff;color:var(--muted);}
.bld-seclabel{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);font-weight:700;margin:20px 0 8px;}
.bld-seclabel .bld-c{background:#eef2f8;border-radius:999px;padding:1px 8px;margin-left:4px;color:var(--navy);}

/* lesson + exam accordion shells */
.bld-lesson,.bld-exam{background:var(--card);border:1px solid var(--line);border-radius:12px;margin-bottom:8px;overflow:hidden;}
.bld-lesson{border-left:3px solid var(--navy);}
.bld-exam{border-left:3px solid var(--gold);}
.bld-lhead,.bld-xhead{display:flex;align-items:center;gap:10px;padding:11px 14px;}
.bld-chev{cursor:pointer;color:var(--muted);font-size:13px;transition:transform .15s;display:inline-block;width:14px;user-select:none;}
.bld-lesson.open .bld-chev,.bld-exam.open .bld-chev{transform:rotate(90deg);}
.bld-num,.bld-qn{background:var(--navy);color:#fff;font-size:12px;font-weight:800;min-width:24px;height:24px;border-radius:6px;display:inline-flex;align-items:center;justify-content:center;padding:0 6px;}
.bld-qn{background:#46587a;}
.bld-lt{flex:1;border:0;font-size:16px;font-weight:700;padding:5px 4px;border-bottom:1px solid transparent;color:var(--ink);min-width:0;}
.bld-lt:focus{outline:0;border-bottom-color:var(--gold);}
.bld-meta2{font-size:11.5px;color:var(--muted);white-space:nowrap;}
.bld-del{background:none;border:0;color:#b94a4a;cursor:pointer;font-size:14px;opacity:.5;}
.bld-del:hover{opacity:1;}
.bld-wrap{display:none;padding:4px 14px 14px 34px;border-top:1px solid var(--line);background:#fbfcfe;}
.bld-lesson.open .bld-wrap,.bld-exam.open .bld-wrap{display:block;}

/* content topic rows */
.bld-content{margin:6px 0;}
.bld-crow{display:flex;align-items:center;gap:8px;}
.bld-dot{color:var(--gold);font-weight:900;}
.bld-ct{flex:1;border:1px solid transparent;border-radius:6px;padding:6px 8px;font-size:14px;min-width:0;}
.bld-ct:hover{border-color:var(--line);}
.bld-ct:focus{outline:0;border-color:var(--gold);background:#fff;}
.bld-html{background:#eef2f8;border:1px solid #e0e7f1;border-radius:6px;font-size:10.5px;font-weight:700;padding:3px 7px;cursor:pointer;color:var(--navy);}
.bld-bodyhtml{display:none;width:100%;margin:6px 0 4px;min-height:160px;border:1px solid var(--line);border-radius:8px;padding:10px;font-family:'JetBrains Mono',monospace;font-size:12.5px;line-height:1.5;}
.bld-content.open .bld-bodyhtml{display:block;}

/* questions */
.bld-q{background:#fff;border:1px solid var(--line);border-radius:9px;padding:10px 12px;margin:8px 0;}
.bld-qhead{display:flex;align-items:center;gap:8px;}
.bld-qt{flex:1;border:0;border-bottom:1px solid transparent;font-size:14.5px;font-weight:600;padding:4px 2px;min-width:0;}
.bld-qt:focus{outline:0;border-bottom-color:var(--gold);}
.bld-num.bld-num,.bld-num{width:58px;border:1px solid var(--line);border-radius:6px;padding:5px 6px;font-size:12.5px;text-align:center;}
.bld-qsub{display:flex;gap:8px;margin:8px 0;}
.bld-qi{flex:1;border:1px solid var(--line);border-radius:6px;padding:6px 8px;font-size:13px;min-width:0;}
.bld-tie{border:1px solid var(--line);border-radius:6px;padding:6px 8px;font-size:12.5px;max-width:240px;color:var(--muted);}
.bld-answers{margin-left:6px;padding-left:10px;border-left:2px solid #eef2f8;}
.bld-opt{display:flex;align-items:center;gap:8px;margin:5px 0;}
.bld-ol{flex:1;border:1px solid transparent;border-radius:6px;padding:5px 8px;font-size:13px;min-width:0;}
.bld-ol:hover{border-color:var(--line);}
.bld-ol:focus{outline:0;border-color:var(--gold);background:#fff;}
.bld-opt input[type=checkbox]{width:16px;height:16px;accent-color:var(--ok);}

/* add buttons */
.bld-add{background:none;border:1px dashed #c6d0de;border-radius:7px;color:var(--navy);font-size:12.5px;font-weight:700;padding:6px 12px;cursor:pointer;margin-top:8px;}
.bld-add:hover{border-color:var(--gold);background:#fffaf0;}
.bld-add-lg{display:block;width:100%;padding:11px;margin:6px 0 4px;}

/* ===== student lesson viewer ===== */
.lrn-lesson{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:10px;padding:0 18px;}
.lrn-lesson summary{cursor:pointer;font-size:17px;font-weight:700;padding:15px 0;list-style:none;display:flex;align-items:center;gap:10px;}
.lrn-lesson summary::-webkit-details-marker{display:none;}
.lrn-num{background:var(--navy);color:#fff;font-size:12px;font-weight:800;width:24px;height:24px;border-radius:6px;display:inline-flex;align-items:center;justify-content:center;flex:none;}
.lrn-sum{margin:0 0 10px;}
.lrn-content{padding:4px 0 18px;border-top:1px solid var(--line);}
.lrn-content h3{font-size:16px;margin:14px 0 8px;}
.lrn-body{font-size:15.5px;line-height:1.7;color:#2c3543;}
.lrn-body img{max-width:100%;height:auto;border-radius:8px;}
.lrn-body iframe{max-width:100%;}

/* ===== certificate ===== */
.certcard{background:#fff;border:1px solid var(--gold-lt);border-radius:18px;padding:36px 30px;text-align:center;max-width:560px;margin:0 auto 20px;box-shadow:0 18px 44px -28px rgba(14,29,58,.4);}
.certname{font-size:27px;font-weight:800;color:var(--navy);margin:10px 0 4px;letter-spacing:-.01em;}
@media print{.topbar,.foot,.crumbs,.btn-out,.flash{display:none !important;}.certcard{border:0;box-shadow:none;}}

/* ===== marketing homepage ===== */
.mk-hero{text-align:center;padding:54px 20px 40px;max-width:780px;margin:0 auto;}
.mk-eyebrow{font-family:'JetBrains Mono',monospace;font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--gold);font-weight:700;}
.mk-h1{font-size:46px;font-weight:900;letter-spacing:-.03em;line-height:1.05;margin:16px 0 14px;color:var(--navy);}
.mk-h1 span{color:var(--gold);}
.mk-sub{font-size:18px;line-height:1.6;color:#46526a;max-width:660px;margin:0 auto;}
.mk-cta{margin:26px 0 8px;display:flex;gap:18px;align-items:center;justify-content:center;flex-wrap:wrap;}
.mk-btn{font-size:16px;padding:13px 28px;}
.mk-login{color:var(--navy);text-decoration:none;font-weight:600;font-size:14.5px;}
.mk-note{font-size:13px;color:var(--muted);font-weight:600;}
.mk-band{background:#fff;border:1px solid var(--line);border-radius:18px;padding:38px 34px;margin:26px auto;max-width:820px;text-align:center;}
.mk-band.mk-dark{background:linear-gradient(120deg,var(--navy),var(--navy2));border:0;color:#dbe2ee;}
.mk-band.mk-dark .mk-h2{color:#fff;}.mk-band.mk-dark strong{color:var(--gold-lt);}.mk-band.mk-dark .mk-lead{color:#c3cde0;}
.mk-h2{font-size:27px;font-weight:800;letter-spacing:-.02em;color:var(--navy);margin:0 0 12px;}
.mk-center{text-align:center;}
.mk-lead{font-size:16.5px;line-height:1.65;color:#46526a;max-width:680px;margin:0 auto;}
.mk-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;max-width:980px;margin:22px auto;}
.mk-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;}
.mk-day{font-family:'JetBrains Mono',monospace;font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--gold);}
.mk-card h3{font-size:16px;margin:8px 0 6px;color:var(--navy);}
.mk-card p{font-size:13.5px;line-height:1.55;color:#5b6678;margin:0;}
.mk-why{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;max-width:820px;margin:22px auto 0;}
.mk-why div{background:#fff;border:1px solid var(--line);border-left:3px solid var(--gold);border-radius:10px;padding:16px 18px;font-size:15px;color:#46526a;}
.mk-why strong{color:var(--navy);}
.mk-final{text-align:center;padding:44px 20px 20px;}

/* ===== exam review (why) ===== */
.rev-q{background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px 16px;margin-bottom:10px;font-size:14.5px;}
.rev-ok{color:var(--ok);font-weight:600;font-size:13px;margin-top:6px;}
.rev-no{color:var(--err);font-weight:600;font-size:13px;margin-top:6px;}
.rev-why{margin-top:8px;background:#fbfcfe;border-left:3px solid var(--gold);padding:8px 12px;border-radius:6px;font-size:14px;color:#36404f;}
/* exam answer options — text left, control flush right */
.ex-opt{display:flex;align-items:center;justify-content:space-between;gap:14px;border:1px solid var(--line);border-radius:9px;padding:11px 15px;margin:8px 0;cursor:pointer;font-weight:500;font-size:14.5px;}
.ex-opt:hover{border-color:var(--gold);background:#fffaf0;}
.ex-opt input{flex:none;width:18px;height:18px;accent-color:var(--navy);}
/* status select pills colored by value */
.bld-pill.pill-published{background:#e7f6ee;color:#1f7a4d;border-color:#bfe6d0;}
.bld-pill.pill-draft{background:#fff4d6;color:#8a6d23;border-color:#f0dca0;}
.bld-pill.pill-archived{background:#fbe3ee;color:#a8336b;border-color:#f0c2d8;}
.bld-final{font-size:11px;color:var(--muted);display:flex;align-items:center;gap:4px;white-space:nowrap;font-weight:600;}
.bld-final input{width:14px;height:14px;}