:root{
  --red:#e3120b;--red-dk:#b30d07;--ink:#121212;--ink-2:#2a2a2a;--gray:#6b6b6b;--line:#e4e1dc;
  --paper:#f6f4f0;--card:#ffffff;--ok:#178a3a;--ok-bg:#e7f5ec;--bad:#c0261f;--bad-bg:#fcebea;
  --accent:var(--red);--accent-2:#111;
  --radius:14px;--shadow:0 1px 2px rgba(0,0,0,.06),0 8px 28px rgba(0,0,0,.08);
  --body:"Barlow",system-ui,-apple-system,Segoe UI,sans-serif;
}
[data-quiz="level1"]{--accent:#121212;--accent-2:#e3120b}
[data-quiz="level2"]{--accent:#15a33c;--accent-2:#f5c400}
[data-quiz="level3"]{--accent:#4b22b0;--accent-2:#13a6e0}
[data-quiz="mission"]{--accent:#e3120b;--accent-2:#121212}
*{box-sizing:border-box}
html,body{margin:0}
body{font-family:var(--body);background:var(--paper);color:var(--ink);font-size:17px;line-height:1.5;-webkit-font-smoothing:antialiased;min-height:100vh;display:flex;flex-direction:column}
a{color:inherit}
button{font:inherit;cursor:pointer}
input,textarea,select{font:inherit;color:inherit}
.skip{position:absolute;left:-999px}
.skip:focus{left:16px;top:8px;background:#fff;padding:8px 12px;z-index:9}

/* header */
.top{background:var(--ink);background-image:radial-gradient(circle at 12% 30%,rgba(255,255,255,.06) 0 2px,transparent 3px),radial-gradient(circle at 80% 70%,rgba(255,255,255,.05) 0 1.5px,transparent 2.5px);background-size:46px 46px,31px 31px;color:#fff;border-bottom:4px solid var(--accent-2)}
.top-in{max-width:1080px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;gap:14px}
.logo-chip{background:#fff;border-radius:8px;padding:6px 10px;display:flex;align-items:center;transform:rotate(-1.2deg);box-shadow:0 2px 0 rgba(0,0,0,.4)}
.logo-chip img{height:22px;display:block}
.top-title{font-weight:800;font-size:20px;letter-spacing:-.2px;opacity:.95}
.top-spacer{flex:1}
.top a.link{color:#fff;opacity:.75;text-decoration:none;font-weight:600;font-size:14px}
.top a.link:hover{opacity:1}

main{flex:1;width:100%;max-width:1080px;margin:0 auto;padding:28px 20px 60px}
.foot{text-align:center;color:var(--gray);font-size:13px;padding:24px 16px}

/* hero */
.hero{padding:18px 0 26px}
.hero h1{font-weight:800;font-size:clamp(34px,6vw,56px);line-height:1.02;margin:0 0 10px;letter-spacing:-1px}
.hero h1 span{color:var(--red)}
.hero p{margin:0;max-width:620px;color:var(--ink-2);font-size:18px}

.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:18px}
.qcard{position:relative;display:flex;flex-direction:column;text-align:left;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px 20px 18px;box-shadow:var(--shadow);text-decoration:none;color:var(--ink);overflow:hidden;transition:transform .15s ease,box-shadow .15s ease}
.qcard:hover,.qcard:focus-visible{transform:translateY(-3px);box-shadow:0 2px 4px rgba(0,0,0,.06),0 16px 40px rgba(0,0,0,.12);outline:none}
.qcard::before{content:"";position:absolute;inset:0 0 auto 0;height:8px;background:linear-gradient(100deg,var(--accent) 0 62%,var(--accent-2) 62% 100%)}
.qcard .tag{font-size:12px;font-weight:700;letter-spacing:1.2px;text-transform:uppercase;color:var(--gray)}
.qcard h2{font-weight:800;letter-spacing:-.3px;font-size:26px;line-height:1.1;margin:6px 0 8px}
.qcard p{margin:0 0 16px;color:var(--ink-2);font-size:15px;flex:1}
.qcard .meta{display:flex;gap:14px;font-size:14px;color:var(--gray);font-weight:600}
.qcard .go{margin-top:14px;font-weight:700;color:var(--accent)}
[data-quiz="level1"] .qcard .go,.qcard[data-quiz="level1"] .go{color:var(--red)}

/* panels */
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:clamp(20px,4vw,40px);max-width:760px;margin:0 auto;position:relative;overflow:hidden}
.panel::before{content:"";position:absolute;inset:0 0 auto 0;height:8px;background:linear-gradient(100deg,var(--accent) 0 62%,var(--accent-2) 62% 100%)}
.eyebrow{font-size:13px;font-weight:700;letter-spacing:1.4px;text-transform:uppercase;color:var(--gray);margin:4px 0 6px}
.panel h1{font-weight:800;letter-spacing:-.3px;font-size:clamp(28px,5vw,40px);line-height:1.08;margin:0 0 10px}
.lead{color:var(--ink-2);margin:0 0 22px}
.field{display:block;margin:0 0 16px}
.field span{display:block;font-weight:700;font-size:15px;margin:0 0 6px}
.field small{display:block;color:var(--gray);font-size:13.5px;margin-top:5px}
.field input,.field textarea,.field select{width:100%;padding:13px 14px;border:1.5px solid #d6d2cc;border-radius:10px;background:#fff;font-size:17px;transition:border-color .12s,box-shadow .12s}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 3px rgba(0,0,0,.08)}
.field textarea{min-height:170px;resize:vertical;line-height:1.5}
.callout{background:#fff8e1;border:1px solid #f1d98a;border-radius:10px;padding:12px 14px;font-size:15px;margin:0 0 18px}
.callout b{font-weight:700}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:10px;padding:13px 22px;font-weight:700;font-size:16px;background:var(--ink);color:#fff;text-decoration:none;transition:transform .08s,background .12s,opacity .12s}
.btn:hover{background:#000}
.btn:active{transform:translateY(1px)}
.btn.red{background:var(--red)}
.btn.red:hover{background:var(--red-dk)}
.btn.ghost{background:transparent;color:var(--ink);border:1.5px solid #cfcac3}
.btn.ghost:hover{background:#fff;border-color:var(--ink)}
.btn.sm{padding:8px 14px;font-size:14px;border-radius:8px}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.row.end{justify-content:flex-end}
.row.between{justify-content:space-between}

/* quiz step */
.progress{display:flex;align-items:center;gap:12px;margin:0 0 22px}
.bar{flex:1;height:10px;background:#ece9e4;border-radius:99px;overflow:hidden}
.bar i{display:block;height:100%;background:linear-gradient(90deg,var(--accent),var(--accent-2));border-radius:99px;transition:width .25s ease}
.progress .count{font-weight:700;font-size:14px;color:var(--gray);white-space:nowrap}
.qprompt{font-size:clamp(21px,3.2vw,26px);font-weight:700;line-height:1.3;margin:0 0 18px}
.qimg{display:block;max-width:100%;max-height:360px;margin:0 auto 20px;border-radius:12px;border:1px solid var(--line);background:#f1efeb}
.opts{display:grid;gap:10px;margin:0 0 24px;padding:0;list-style:none}
.opt{display:flex;align-items:center;gap:14px;width:100%;text-align:left;background:#fff;border:2px solid #e2ded8;border-radius:12px;padding:14px 16px;font-size:17px;font-weight:600;color:var(--ink);transition:border-color .1s,background .1s,transform .06s}
.opt:hover{border-color:#9d978f}
.opt:active{transform:scale(.995)}
.opt .key{flex:none;width:32px;height:32px;border-radius:8px;display:grid;place-items:center;font-size:14px;font-weight:800;background:#f1eee9;color:var(--gray);border:1.5px solid #e2ded8}
.opt[aria-checked="true"]{border-color:var(--ink);background:#fbfaf8;box-shadow:inset 0 0 0 1px var(--ink)}
.opt[aria-checked="true"] .key{background:var(--ink);color:#fff;border-color:var(--ink)}
.opt:focus-visible{outline:3px solid rgba(227,18,11,.35);outline-offset:2px}
.hint{font-size:13px;color:var(--gray)}
.hint kbd{font-family:inherit;font-weight:700;background:#efece7;border:1px solid #ddd8d1;border-bottom-width:2px;border-radius:5px;padding:0 6px;font-size:12px}

/* review */
.review{list-style:none;margin:0 0 24px;padding:0;border-top:1px solid var(--line)}
.review li{display:flex;gap:12px;padding:12px 2px;border-bottom:1px solid var(--line);align-items:flex-start}
.review .n{flex:none;width:30px;font-weight:800;color:var(--gray)}
.review .q{flex:1;min-width:0}
.review .q b{display:block;font-weight:600;font-size:15px}
.review .q span{display:block;font-size:15px;color:var(--ink-2);margin-top:2px;overflow-wrap:anywhere}
.review .q span.missing{color:var(--bad);font-weight:700}
.review button{flex:none}

/* result */
.result{text-align:center;padding-top:8px}
.badge{width:120px;height:120px;margin:4px auto 14px;border-radius:50%;display:grid;place-items:center;font-weight:800;font-size:34px;color:#fff;background:var(--ink);transform:rotate(-6deg);box-shadow:0 0 0 6px #fff,0 0 0 9px var(--ink)}
.badge.pass{background:var(--ok);box-shadow:0 0 0 6px #fff,0 0 0 9px var(--ok)}
.badge.fail{background:var(--bad);box-shadow:0 0 0 6px #fff,0 0 0 9px var(--bad)}
.score{font-size:46px;font-weight:800;line-height:1;margin:8px 0 4px}
.score small{font-size:20px;color:var(--gray);font-weight:700}
.err{background:var(--bad-bg);color:var(--bad);border-radius:10px;padding:10px 14px;font-weight:600;font-size:15px;margin:0 0 16px}
.loading{text-align:center;color:var(--gray);padding:60px 0}
.spin{width:28px;height:28px;border:3px solid #ddd;border-top-color:var(--red);border-radius:50%;animation:sp .8s linear infinite;margin:0 auto 12px}
@keyframes sp{to{transform:rotate(360deg)}}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation-duration:2s!important}}

@media (max-width:560px){
  body{font-size:16px}
  .top-title{display:none}
  .opt{padding:12px 13px;font-size:16px}
  .btn{padding:12px 18px}
}

main:focus{outline:none}
.qimg{min-height:180px;object-fit:contain}