:root{
  --bg:#f3f0e8;--panel:#fffdf8;--panel2:#f8f5ec;--ink:#22251b;--muted:#676656;--line:#dcd5c2;
  --olive:#3f4a2a;--olive-2:#56633a;--side:#23291a;--side-ink:#d9d4c2;--side-muted:#9a967f;
  --accent:#b5651d;--accent-soft:#f3e3d0;--ok:#2f7d32;--ok-soft:#e1f0df;--bad:#b3261e;--bad-soft:#f8e0dd;
  --warn:#9a6a00;--warn-soft:#f6ecd0;--lock:#8d8b7c;--shadow:0 1px 2px rgba(0,0,0,.06),0 4px 14px rgba(0,0,0,.05);
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#13150e;--panel:#1c1f15;--panel2:#22261a;--ink:#e8e5d8;--muted:#a3a08e;--line:#33382a;
  --olive:#a5b879;--olive-2:#8a9c61;--side:#0e100a;--side-ink:#dcd8c6;--side-muted:#8d8a76;
  --accent:#e28e42;--accent-soft:#3a2a1a;--ok:#71c476;--ok-soft:#1d3320;--bad:#ef7d72;--bad-soft:#3a1d1a;
  --warn:#e2b64c;--warn-soft:#352c14;--lock:#6f6d60;--shadow:none}}
:root[data-theme="dark"]{
  --bg:#13150e;--panel:#1c1f15;--panel2:#22261a;--ink:#e8e5d8;--muted:#a3a08e;--line:#33382a;
  --olive:#a5b879;--olive-2:#8a9c61;--side:#0e100a;--side-ink:#dcd8c6;--side-muted:#8d8a76;
  --accent:#e28e42;--accent-soft:#3a2a1a;--ok:#71c476;--ok-soft:#1d3320;--bad:#ef7d72;--bad-soft:#3a1d1a;
  --warn:#e2b64c;--warn-soft:#352c14;--lock:#6f6d60;--shadow:none}

*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{background:var(--bg);color:var(--ink);font:15px/1.55 "Segoe UI",system-ui,-apple-system,Roboto,Arial,sans-serif}
a{color:var(--olive);text-decoration:none}a:hover{text-decoration:underline}
button{font:inherit}
.svg{width:18px;height:18px;flex:none;vertical-align:-3px}

/* ---------- layout ---------- */
.app{display:grid;grid-template-columns:260px 1fr;min-height:100vh}
.side{background:var(--side);color:var(--side-ink);display:flex;flex-direction:column;position:sticky;top:0;height:100vh;overflow-y:auto}
.brand{padding:20px 18px 14px;border-bottom:1px solid rgba(255,255,255,.07)}
.brand .crest{display:flex;gap:10px;align-items:center}
.brand .mark{width:38px;height:38px;border-radius:8px;background:#b5651d;display:grid;place-items:center;color:#fff;font-weight:800;letter-spacing:.02em}
.brand b{display:block;font-size:14px;line-height:1.2;color:#fff}
.brand small{color:var(--side-muted);font-size:12px}
.nav{padding:10px 8px;display:flex;flex-direction:column;gap:2px}
.nav a{display:flex;gap:10px;align-items:center;padding:9px 12px;border-radius:8px;color:var(--side-ink);font-size:14px}
.nav a:hover{background:rgba(255,255,255,.06);text-decoration:none}
.nav a.on{background:rgba(226,142,66,.16);color:#fff;box-shadow:inset 3px 0 0 #e28e42}
.nav .sec{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--side-muted);padding:14px 12px 4px}
.nav .modlink{font-size:13.5px}
.nav .modlink .st{margin-left:auto}
.side .foot{margin-top:auto;padding:14px 18px;border-top:1px solid rgba(255,255,255,.07);font-size:12.5px;color:var(--side-muted)}
.side .foot b{color:#fff;display:block;font-size:14px}
.main{min-width:0;display:flex;flex-direction:column}
.topbar{display:flex;align-items:center;gap:12px;padding:12px 28px;border-bottom:1px solid var(--line);background:var(--panel);position:sticky;top:0;z-index:5}
.topbar .crumbs{font-size:13.5px;color:var(--muted);flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar .crumbs a{color:var(--muted)}
.menu-btn{display:none;background:none;border:1px solid var(--line);border-radius:8px;padding:6px 8px;color:var(--ink);cursor:pointer}
.content{padding:28px;max-width:1080px;width:100%}
.banner{margin:14px 28px 0;padding:12px 16px;border-radius:10px;background:var(--warn-soft);color:var(--ink);border:1px solid color-mix(in srgb,var(--warn) 40%,transparent);font-size:14px}
.banner b{color:var(--warn)}

@media (max-width:900px){
  .app{grid-template-columns:1fr}
  .side{position:fixed;left:0;top:0;bottom:0;width:270px;z-index:20;transform:translateX(-100%);transition:transform .2s}
  body.nav-open .side{transform:none;box-shadow:0 0 0 100vmax rgba(0,0,0,.4)}
  .menu-btn{display:inline-flex}
  .content{padding:18px 16px}
  .topbar{padding:10px 16px}
  .banner{margin:12px 16px 0}
}

/* ---------- type & blocks ---------- */
h1{font-size:28px;line-height:1.2;margin:0 0 6px;letter-spacing:-.01em}
h2{font-size:20px;margin:28px 0 10px}
h3{font-size:16px;margin:18px 0 8px}
.kicker{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);font-weight:700;margin-bottom:6px}
.lead{color:var(--muted);font-size:16px;margin:0 0 18px;max-width:760px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:18px 20px;box-shadow:var(--shadow)}
.card+.card{margin-top:14px}
.grid>.card+.card,.grid>a.card+a.card{margin-top:0}
.grid{display:grid;gap:14px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}.g3{grid-template-columns:repeat(3,minmax(0,1fr))}.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:900px){.g3,.g4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:600px){.g2,.g3,.g4{grid-template-columns:1fr}}
.stat{padding:16px 18px}
.stat .n{font-size:26px;font-weight:800;line-height:1.1}
.stat .l{font-size:12.5px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}
ul.clean{margin:6px 0 0;padding-left:20px}ul.clean li{margin:4px 0}
.muted{color:var(--muted)}.small{font-size:13px}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.spacer{flex:1}

/* ---------- chips / buttons ---------- */
.chip{display:inline-flex;gap:5px;align-items:center;padding:2px 9px;border-radius:99px;font-size:12px;font-weight:700;background:var(--panel2);color:var(--muted);border:1px solid var(--line);white-space:nowrap}
.chip.ok{background:var(--ok-soft);color:var(--ok);border-color:transparent}
.chip.bad{background:var(--bad-soft);color:var(--bad);border-color:transparent}
.chip.warn{background:var(--warn-soft);color:var(--warn);border-color:transparent}
.chip.acc{background:var(--accent-soft);color:var(--accent);border-color:transparent}
.chip.lock{color:var(--lock)}
.btn{display:inline-flex;gap:8px;align-items:center;background:var(--olive);color:#fff;border:0;border-radius:9px;padding:10px 16px;font-weight:600;font-size:14px;cursor:pointer;text-decoration:none!important}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .btn:not(.alt):not(.ghost){color:#14170f}}
:root[data-theme="dark"] .btn:not(.alt):not(.ghost){color:#14170f}
.btn:hover{filter:brightness(1.08)}
.btn.alt{background:transparent;color:var(--olive);border:1px solid var(--olive)}
.btn.acc{background:var(--accent);color:#fff}
.btn.ghost{background:transparent;color:var(--muted);border:1px solid var(--line)}
.btn:disabled,.btn.disabled{opacity:.45;cursor:not-allowed;filter:none}
.btn.sm{padding:6px 11px;font-size:13px}

/* ---------- progress ---------- */
.bar{height:8px;background:var(--panel2);border-radius:99px;overflow:hidden;border:1px solid var(--line)}
.bar>i{display:block;height:100%;background:var(--olive-2);border-radius:99px;transition:width .3s}
.bar.acc>i{background:var(--accent)}

/* ---------- module cards ---------- */
.mod{display:flex;flex-direction:column;gap:10px}
.mod .top{display:flex;gap:12px;align-items:flex-start}
.mod .num{width:44px;height:44px;border-radius:10px;background:var(--olive);color:var(--panel);display:grid;place-items:center;font-weight:800;font-size:18px;flex:none}
.mod.locked{opacity:.65}.mod.locked .num{background:var(--lock)}
.mod h3{margin:0;font-size:16.5px}
.mod p{margin:0;color:var(--muted);font-size:14px}

/* ---------- item list (module outline) ---------- */
.items{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--panel)}
.item{display:flex;gap:14px;align-items:center;padding:14px 18px;border-top:1px solid var(--line);color:var(--ink)}
.item:first-child{border-top:0}
a.item:hover{background:var(--panel2);text-decoration:none}
.item .ic{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:var(--panel2);color:var(--muted);flex:none;border:1px solid var(--line)}
.item.done .ic{background:var(--ok-soft);color:var(--ok);border-color:transparent}
.item.cur .ic{background:var(--accent-soft);color:var(--accent);border-color:transparent}
.item.locked{color:var(--lock)}
.item .t{flex:1;min-width:0}.item .t b{display:block;font-weight:600}.item .t span{font-size:13px;color:var(--muted)}
.item.locked .t span{color:var(--lock)}

/* ---------- lesson ---------- */
.steps{display:flex;gap:6px;flex-wrap:wrap;margin:6px 0 18px}
.steps button{display:flex;gap:8px;align-items:center;background:var(--panel);border:1px solid var(--line);border-radius:99px;padding:7px 14px;cursor:pointer;color:var(--ink);font-size:13.5px}
.steps button.on{border-color:var(--olive);box-shadow:inset 0 0 0 1px var(--olive)}
.steps button .d{width:20px;height:20px;border-radius:50%;display:grid;place-items:center;background:var(--panel2);font-size:11px;font-weight:800;color:var(--muted)}
.steps button.done .d{background:var(--ok);color:#fff}
.steps button:disabled{opacity:.5;cursor:not-allowed}
.video{position:relative;width:100%;aspect-ratio:16/9;background:#000;border-radius:12px;overflow:hidden}
.video iframe,.video>div{position:absolute;inset:0;width:100%;height:100%;border:0}
.video .fallback{display:flex;flex-direction:column;gap:12px;align-items:center;justify-content:center;text-align:center;color:#eee;padding:20px;background:linear-gradient(135deg,#23291a,#0e100a)}
.video .fallback img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.28}
.video .fallback>*{position:relative}
.watch{margin-top:12px}
.watch .row{justify-content:space-between}
.keypts li{margin:6px 0}
.theory{font-size:15.5px}

.drill{border:1px solid var(--line);border-radius:12px;background:var(--panel);margin-bottom:16px;overflow:hidden}
.drill .hd{padding:14px 18px;background:var(--panel2);border-bottom:1px solid var(--line);display:flex;gap:10px;align-items:center}
.drill .hd h3{margin:0;font-size:16px;flex:1}
.drill .bd{padding:4px 18px 18px}
.drill ol{padding-left:20px}.drill ol li{margin:5px 0}
.levels{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:8px}
@media (max-width:700px){.levels{grid-template-columns:1fr}}
.lvl{border:1px solid var(--line);border-radius:10px;padding:12px;cursor:pointer;font-size:13.5px;display:block;background:var(--panel)}
.lvl b{display:flex;gap:8px;align-items:center;font-size:13.5px;margin-bottom:4px}
.lvl:hover{border-color:var(--olive-2)}
.lvl.s1{border-color:var(--bad);background:var(--bad-soft)}
.lvl.s2{border-color:var(--ok);background:var(--ok-soft)}
.lvl.s3{border-color:var(--accent);background:var(--accent-soft)}
.field{width:100%;padding:9px 12px;border:1px solid var(--line);border-radius:8px;background:var(--panel);color:var(--ink);font:inherit}
.field:focus{outline:2px solid var(--olive-2);outline-offset:1px}
.callout{border-left:4px solid var(--accent);background:var(--accent-soft);padding:12px 14px;border-radius:0 10px 10px 0;font-size:14px;margin:12px 0}

/* ---------- quiz ---------- */
.q{margin-bottom:14px}
.q h4{margin:0 0 10px;font-size:15.5px;display:flex;gap:8px}
.q h4 .n{color:var(--accent);flex:none}
.opt{display:flex;gap:10px;align-items:flex-start;padding:9px 12px;border:1px solid var(--line);border-radius:9px;margin:6px 0;cursor:pointer;background:var(--panel)}
.opt:hover{border-color:var(--olive-2)}
.opt input{margin-top:4px}
.opt.right{border-color:var(--ok);background:var(--ok-soft)}
.opt.wrong{border-color:var(--bad);background:var(--bad-soft)}
.explain{margin-top:8px;font-size:13.5px;color:var(--muted)}
.result{display:flex;gap:16px;align-items:center;padding:18px 20px;border-radius:12px;margin-bottom:16px}
.result.pass{background:var(--ok-soft)}.result.fail{background:var(--bad-soft)}
.result .big{font-size:30px;font-weight:800}
.result.pass .big{color:var(--ok)}.result.fail .big{color:var(--bad)}

/* ---------- tables ---------- */
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:700;background:var(--panel2)}
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:12px;background:var(--panel)}
.tablewrap table tr:last-child td{border-bottom:0}

/* ---------- login ---------- */
.login{min-height:100vh;display:grid;place-items:center;padding:20px;background:radial-gradient(circle at 30% 20%,#3a4528 0,#1b2013 55%,#0e100a 100%)}
.login .box{width:100%;max-width:460px;background:var(--panel);border-radius:16px;padding:28px;box-shadow:0 20px 60px rgba(0,0,0,.4)}
.login .mark{width:56px;height:56px;border-radius:12px;background:#b5651d;color:#fff;display:grid;place-items:center;font-weight:800;font-size:20px;margin-bottom:14px}
.profiles{display:flex;flex-direction:column;gap:8px;margin:12px 0}
.profiles button{display:flex;justify-content:space-between;align-items:center;padding:10px 14px;border:1px solid var(--line);border-radius:10px;background:var(--panel2);color:var(--ink);cursor:pointer;text-align:left}
.profiles button:hover{border-color:var(--olive)}

/* ---------- certificate ---------- */
.cert{background:#fffdf6;color:#23261c;border:10px double #3f4a2a;padding:48px 36px;text-align:center;border-radius:4px;position:relative}
.cert .seal{width:88px;height:88px;border-radius:50%;background:#b5651d;color:#fff;display:grid;place-items:center;margin:0 auto 14px;font-weight:800;font-size:22px;box-shadow:0 0 0 6px #f3e3d0}
.cert h2{font-size:34px;margin:6px 0;color:#3f4a2a;font-family:Georgia,"Times New Roman",serif}
.cert .name{font-size:32px;font-weight:700;color:#b5651d;margin:12px 0;font-family:Georgia,"Times New Roman",serif}
.cert .sig{display:flex;justify-content:space-around;gap:10px;flex-wrap:wrap;margin-top:28px;font-size:12.5px;color:#555}
.cert .sig div{border-top:1px solid #999;padding-top:6px;min-width:150px}

.toast{position:fixed;bottom:18px;left:50%;transform:translateX(-50%);background:#23291a;color:#fff;padding:10px 18px;border-radius:10px;z-index:50;display:none;box-shadow:0 8px 24px rgba(0,0,0,.3)}

@media print{
  .side,.topbar,.banner,.no-print,.toast{display:none!important}
  .app{display:block}.content{padding:0;max-width:none}
  body{background:#fff}
}