/* PrepLabOnline Styles */
:root{
  --bg:#ffffff;
  --muted:#f8fafc;
  --text:#0f172a;
  --sub:#475569;
  --primary:#4f46e5;
  --accent:#06b6d4;
  --ring:rgba(79,70,229,.25);
  --card:#ffffff;
  --border:#e5e7eb;
  --contrast:#111827;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color:var(--text); background:var(--bg); line-height:1.6;
}

/* Layout helpers */
.container{max-width:1100px;margin-inline:auto;padding:0 20px}
.section{padding:72px 0}
.section.muted{background:var(--muted)}
.section-title{font-size:clamp(24px,3vw,34px);line-height:1.2;margin:0 0 8px}
.section-subtitle{color:var(--sub);margin:0 0 28px}

/* Header */
.site-header{position:sticky;top:0;background:#fff;border-bottom:1px solid var(--border);z-index:50}
.site-header .nav{display:flex;align-items:center;gap:16px;padding:14px 0}
.brand .logo{height:34px}
.logo.small{height:26px}

.menu{display:flex;gap:18px;margin-left:auto}
.menu a{color:var(--sub);text-decoration:none;font-weight:600}
.menu a:hover{color:var(--text)}

.cta-group{display:flex;gap:10px;margin-left:12px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:10px 14px;border-radius:12px;border:1px solid var(--border);
  font-weight:700;text-decoration:none;color:var(--text);transition:.2s;
  box-shadow:0 1px 0 rgba(17,24,39,.04);
}
.btn.block{display:flex;width:100%}
.btn.primary{background:linear-gradient(90deg,var(--primary),var(--accent));color:#fff;border-color:transparent}
.btn.primary:hover{filter:brightness(1.05)}
.btn.contrast{background:var(--contrast);color:#fff;border-color:#000}
.btn.ghost{background:#fff}
.btn.lg{padding:14px 18px;border-radius:14px}

.hamburger{display:none;margin-left:8px;background:transparent;border:0;padding:8px}
.hamburger span{display:block;width:22px;height:2px;background:#111;margin:5px 0;border-radius:2px}

/* Hero */
.hero{padding:64px 0;background:linear-gradient(180deg,#ffffff, #f8fafc)}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:center}
.hero-copy h1{font-size:clamp(28px,4vw,44px);line-height:1.1;margin:8px 0 14px}
.hero-copy p{color:var(--sub);margin:0 0 18px}
.hero-actions{display:flex;gap:12px;margin-top:6px}
.pill{
  display:inline-block;background:linear-gradient(90deg,var(--primary),var(--accent));color:#fff;
  padding:4px 10px;border-radius:999px;font-weight:700;letter-spacing:.2px;font-size:12px;
  box-shadow:0 2px 8px var(--ring);
}
.trust{display:flex;gap:16px;margin-top:18px;color:var(--sub)}
.trust .stat{display:flex;flex-direction:column;border:1px dashed var(--border);border-radius:12px;padding:10px 12px}
.trust .stat strong{font-size:18px;color:var(--text)}

.hero-art img{width:100%;height:auto;border-radius:18px;border:1px solid var(--border);box-shadow:0 10px 30px rgba(2,6,23,.06)}

/* Exam cards */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:22px}
.card{
  background:var(--card);border:1px solid var(--border);border-radius:16px;padding:18px;
  box-shadow:0 2px 20px rgba(2,6,23,.03);
}
.card h3{margin:8px 0 6px}
.card p{margin:0 0 14px;color:var(--sub)}
.card-link{font-weight:700;color:var(--primary);text-decoration:none}
.card-link:hover{text-decoration:underline}
.icon.circle{
  width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(90deg,var(--primary),var(--accent));color:#fff;font-weight:800;
  box-shadow:0 6px 16px var(--ring);
}

/* More list */
.more{display:flex;gap:8px;align-items:center;margin-top:18px;color:var(--sub)}
.more ul{display:flex;gap:10px;margin:0;padding:0;list-style:none}
.more li{background:#fff;border:1px solid var(--border);padding:6px 10px;border-radius:999px}

/* Features */
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:22px}
.feature{
  background:#fff;border:1px solid var(--border);border-radius:16px;padding:18px;
  box-shadow:0 2px 20px rgba(2,6,23,.03);
}
.badge{display:inline-block;background:#eef2ff;color:#3730a3;padding:4px 10px;border-radius:999px;font-weight:700;font-size:12px;margin-bottom:8px}

/* Pricing */
.pricing{}
.pricing-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:22px}
.price-card{background:#fff;border:1px solid var(--border);border-radius:18px;padding:20px;position:relative}
.price-card h3{margin:0 0 8px}
.price{font-size:38px;font-weight:800;display:flex;align-items:flex-end;gap:4px;margin:8px 0 16px}
.price span{font-size:.5em;color:var(--sub)}
.price-card ul{padding-left:18px;color:var(--sub)}
.price-card.featured{border-width:2px;border-color:transparent;background:linear-gradient(#fff,#fff) padding-box, linear-gradient(90deg,var(--primary),var(--accent)) border-box;box-shadow:0 8px 30px rgba(79,70,229,.12)}
.ribbon{position:absolute;top:-10px;right:14px;background:linear-gradient(90deg,var(--primary),var(--accent));color:#fff;font-weight:800;padding:6px 10px;border-radius:999px;font-size:12px}

/* FAQ */
.faq details{background:#fff;border:1px solid var(--border);border-radius:14px;padding:14px;margin:10px 0}
.faq summary{cursor:pointer;font-weight:700}

/* Footer */
.site-footer{border-top:1px solid var(--border);padding:24px 0;background:#fff}
.footer-grid{display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:16px}
.footer-links{display:flex;gap:16px}
.footer-links a{color:var(--sub);text-decoration:none}
.social{display:flex;gap:8px}
.social-pill{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:999px;background:#f1f5f9;color:#0f172a;font-weight:800;text-decoration:none}

/* Responsive */
@media (max-width: 980px){
  .hero-grid{grid-template-columns:1fr}
  .cards{grid-template-columns:repeat(2,1fr)}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .pricing-cards{grid-template-columns:1fr}
  .menu{display:none}
  .hamburger{display:block}
}
@media (max-width: 520px){
  .cards{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:1fr}
}