:root{
  --bg:#f6f1e8; --fg:#2a2622; --card:#ffffff; --muted:#7a6f64;
  --primary:#3f5d7d; --primary-fg:#fbf7f0; --border:#e8ddcb;
  --accent:#e7d9c2; --secondary:#ece2d1; --shadow:0 10px 30px -10px rgba(60,45,30,.18);
  --radius:16px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--fg);font:15px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Inter,sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img,svg{display:block}
img{max-width:100%}
.wrap{max-width:480px;margin:0 auto;padding:24px 20px 40px}
.hero{width:100%;border-radius:24px;box-shadow:var(--shadow)}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:24px}
.tile{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;background:var(--card);border:1px solid var(--border);border-radius:18px;padding:18px 8px;text-align:center;box-shadow:var(--shadow);transition:transform .1s;color:var(--primary)}
.tile:active{transform:scale(.96)}
.tile.primary{background:var(--primary);color:var(--primary-fg);border-color:var(--primary)}
.tile .icon{display:inline-flex;width:28px;height:28px}
.tile .icon svg{width:100%;height:100%}
.tile .label{font-size:12px;font-weight:600;color:var(--fg)}
.tile.primary .label{color:var(--primary-fg)}
h1,h2,h3{margin:0;color:var(--fg)}
h2.section{font-size:20px;font-weight:700;margin-top:32px}
.muted{color:var(--muted);font-size:12px}
.problem{display:flex;gap:12px;align-items:center;background:linear-gradient(135deg,var(--card),var(--accent));border:1px solid var(--border);border-radius:18px;padding:14px;margin-top:12px;box-shadow:var(--shadow)}
.problem .ic{flex:0 0 44px;height:44px;border-radius:50%;background:rgba(63,93,125,.12);display:flex;align-items:center;justify-content:center;color:var(--primary)}
.problem .ic svg{width:22px;height:22px}
.problem h3{font-size:14px;font-weight:600}
.problem p{margin:2px 0 0;font-size:12px;color:var(--muted)}
.testcard{display:flex;align-items:center;gap:14px;background:linear-gradient(135deg,rgba(63,93,125,.12),var(--accent));border:1px solid var(--border);border-radius:18px;padding:16px;margin-top:12px;box-shadow:var(--shadow)}
.testcard .ic{flex:0 0 48px;height:48px;border-radius:50%;background:rgba(63,93,125,.18);display:flex;align-items:center;justify-content:center;color:var(--primary)}
.testcard .ic svg{width:24px;height:24px}
.testcard .arrow{margin-left:auto;color:var(--primary);display:inline-flex}
.testcard .arrow svg{width:20px;height:20px}
.cta{margin-top:32px;background:var(--primary);color:var(--primary-fg);border-radius:20px;padding:24px;text-align:center;box-shadow:var(--shadow)}
.cta h2{color:var(--primary-fg);font-size:18px}
.cta p{margin:8px 0 0;font-size:14px;opacity:.9}
.btn{display:inline-block;margin-top:20px;background:var(--bg);color:var(--fg);border-radius:999px;padding:12px 24px;font-weight:600;font-size:14px;border:none;cursor:pointer;transition:transform .1s;text-align:center}
.btn:active{transform:scale(.96)}
.btn.primary{background:var(--primary);color:var(--primary-fg)}
.btn.full{display:block;width:100%}
.btn.outline{background:transparent;border:1px solid rgba(251,247,240,.4);color:var(--primary-fg)}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.btn .ic{display:inline-flex;vertical-align:-4px;margin-right:6px}
.btn .ic svg{width:16px;height:16px}
footer{border-top:1px solid var(--border);background:var(--card);padding:24px 20px;text-align:center}
footer .name{font-weight:600;font-size:14px}
footer .socials{display:flex;justify-content:center;gap:12px;margin-top:16px}
footer .socials a{display:flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:50%;background:var(--secondary);color:var(--primary);transition:transform .1s}
footer .socials a:active{transform:scale(.95)}
.back{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--muted);margin-bottom:16px}
.back svg{width:16px;height:16px}
.back:hover{color:var(--fg)}
.section-card{background:var(--card);border:1px solid var(--border);border-radius:18px;padding:18px;margin-top:14px;box-shadow:var(--shadow)}
.section-card .head{display:flex;align-items:center;gap:12px;margin-bottom:10px}
.section-card .head .ic{flex:0 0 40px;height:40px;border-radius:50%;background:rgba(63,93,125,.12);color:var(--primary);display:flex;align-items:center;justify-content:center}
.section-card .head .ic svg{width:20px;height:20px}
.section-card h2{font-size:16px;font-weight:600}
.section-card ul{margin:8px 0 0;padding-left:20px;color:var(--muted);font-size:14px}
.section-card li{margin:4px 0}
.section-card .label{color:var(--fg);font-weight:600;margin-top:10px;font-size:14px}
.section-card p{color:var(--muted);font-size:14px;margin:4px 0}
.title{font-size:24px;font-weight:700;margin-top:12px}
.subtitle{font-size:14px;color:var(--muted);margin-top:4px}

/* Quiz */
.quiz-progress{margin-top:18px;display:flex;align-items:center;gap:10px;font-size:12px;color:var(--muted);font-weight:600}
.bar{flex:1;height:8px;background:var(--secondary);border-radius:999px;overflow:hidden}
.bar>span{display:block;height:100%;background:var(--primary);border-radius:999px;transition:width .25s ease}
.qcard{background:var(--card);border:1px solid var(--border);border-radius:20px;padding:20px;margin-top:16px;box-shadow:var(--shadow);animation:slide .25s ease}
@keyframes slide{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.qcard .qnum{color:var(--primary);font-weight:700;font-size:13px}
.qcard .qtext{font-size:17px;font-weight:600;margin-top:6px;line-height:1.35}
.qopts{display:flex;flex-direction:column;gap:10px;margin-top:18px}
.qopt{display:flex;align-items:center;gap:12px;text-align:left;background:var(--secondary);border:1px solid var(--border);border-radius:14px;padding:14px;font-size:14px;color:var(--fg);cursor:pointer;transition:transform .1s,background .15s,border-color .15s;font-weight:500;line-height:1.4;width:100%}
.qopt:hover{border-color:var(--primary)}
.qopt:active{transform:scale(.98)}
.qopt.active{background:var(--primary);color:var(--primary-fg);border-color:var(--primary)}
.qopt .badge{flex:0 0 28px;height:28px;border-radius:50%;background:rgba(63,93,125,.18);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700}
.qopt.active .badge{background:rgba(255,255,255,.22);color:var(--primary-fg)}
.qnav{display:flex;gap:10px;margin-top:18px}
.qnav .btn{margin-top:0;flex:1;padding:12px}
.qnav .btn.ghost{background:var(--card);border:1px solid var(--border);color:var(--fg)}
.qnav .btn.ghost[disabled]{opacity:.4}
.result{background:var(--primary);color:var(--primary-fg);border-radius:20px;padding:28px 24px;text-align:center;margin-top:16px;box-shadow:var(--shadow);animation:slide .3s ease}
.result .small{font-size:12px;opacity:.8}
.result .score{font-size:48px;font-weight:700;margin:6px 0;line-height:1}
.result .level{font-size:17px;font-weight:600;margin-top:10px}
.result .text{font-size:14px;opacity:.9;margin-top:8px}
.result .actions{display:flex;flex-direction:column;gap:8px;margin-top:22px}
.result .actions .btn{margin-top:0}