:root{
  --bg:#f8f5ef;
  --card:#ffffff;
  --ink:#202733;
  --muted:#607080;
  --brand:#224e7a;
  --brand2:#c6842f;
  --soft:#eef5fb;
  --soft2:#fff7e9;
  --line:#dbe5ee;
  --danger:#b42318;
  --ok:#177245;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Nastaliq Urdu","Jameel Noori Nastaleeq","Noto Naskh Arabic","Segoe UI",Tahoma,Arial,sans-serif;
  direction:rtl;
  background:linear-gradient(180deg,var(--bg) 0%,#eef6fb 100%);
  color:var(--ink);
  line-height:1.9;
}
a{color:inherit;text-decoration:none}
.container{width:min(1120px,92%);margin:auto}
.topbar{
  position:sticky;top:0;z-index:20;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:12px 0;
}
.brand{
  display:flex;align-items:center;gap:10px;font-weight:800;color:var(--brand);
}
.brand-badge{
  width:42px;height:42px;border-radius:14px;
  background:linear-gradient(135deg,var(--brand),#397fbd);
  color:white;display:grid;place-items:center;font-family:Arial,sans-serif;font-weight:800;
}
.navlinks{display:flex;gap:12px;flex-wrap:wrap}
.navlinks a{
  padding:8px 12px;border-radius:999px;background:var(--soft);
  color:var(--brand);font-size:14px;
}
.hero{padding:58px 0 36px}
.hero-card{
  background:linear-gradient(135deg,#ffffff 0%,#eef5fb 100%);
  border:1px solid var(--line);
  border-radius:28px;
  padding:32px;
  box-shadow:0 18px 50px rgba(34,78,122,.12);
  display:grid;
  grid-template-columns:1.2fr .8fr;
  gap:28px;
  align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--brand);background:var(--soft);
  border:1px solid var(--line);
  padding:6px 12px;border-radius:999px;font-weight:700;font-size:14px;
}
h1{font-size:clamp(32px,5vw,54px);margin:16px 0 12px;line-height:1.45}
h2{font-size:clamp(24px,3vw,34px);margin:34px 0 12px;color:#173c5f}
h3{font-size:22px;margin:18px 0 10px;color:#224e7a}
p{font-size:18px;margin:0 0 12px}
.lead{font-size:21px;color:var(--muted)}
.hero-img{
  min-height:260px;background:#fff;border-radius:24px;border:1px solid var(--line);
  display:grid;place-items:center;padding:24px;
}
.hero-img img,.topic-visual img{max-width:100%;height:auto}
.grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:28px 0 50px;
}
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:24px;
  padding:22px;
  box-shadow:0 10px 28px rgba(0,0,0,.05);
  transition:.2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:0 16px 36px rgba(34,78,122,.14)}
.topic-num{
  width:44px;height:44px;border-radius:14px;
  background:var(--soft);color:var(--brand);display:grid;place-items:center;
  font-family:Arial,sans-serif;font-weight:800;margin-bottom:12px;
}
.card h2{font-size:22px;margin:0 0 8px}
.card p{font-size:16px;color:var(--muted)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  margin-top:12px;padding:10px 16px;border-radius:14px;
  background:var(--brand);color:#fff;font-weight:700;border:0;cursor:pointer;
  font-family:inherit;
}
.btn.secondary{background:var(--soft);color:var(--brand);border:1px solid var(--line)}
.topic-layout{
  display:grid;grid-template-columns:280px 1fr;gap:24px;margin:28px 0 50px;
}
.sidebar{
  position:sticky;top:82px;align-self:start;
  background:#fff;border:1px solid var(--line);border-radius:22px;padding:18px;
}
.sidebar a{display:block;padding:9px 12px;border-radius:12px;color:var(--muted);font-size:15px}
.sidebar a:hover{background:var(--soft);color:var(--brand)}
.content{
  background:#fff;border:1px solid var(--line);border-radius:28px;padding:30px;
  box-shadow:0 12px 34px rgba(0,0,0,.05);
}
.topic-head{
  display:grid;grid-template-columns:1fr 260px;gap:20px;align-items:center;
  border-bottom:1px solid var(--line);padding-bottom:24px;margin-bottom:20px;
}
.topic-visual{
  background:var(--soft);border-radius:22px;padding:18px;display:grid;place-items:center;
}
.info-box,.key-box,.quiz-box{
  border-radius:22px;padding:20px;margin:22px 0;border:1px solid var(--line);
}
.info-box{background:#f8fbff}
.key-box{background:var(--soft2)}
.quiz-box{background:#f4fbf6}
ul{padding-right:24px;margin-top:8px}
li{margin:8px 0;font-size:17px}
.section{padding:10px 0 4px;border-bottom:1px dashed #dbe5ee}
.section:last-child{border-bottom:0}
.quiz-question{
  margin:18px 0;padding:16px;background:#fff;border:1px solid var(--line);border-radius:18px;
}
.quiz-options{display:grid;gap:10px;margin-top:10px}
.option{
  width:100%;text-align:right;padding:10px 12px;border-radius:14px;border:1px solid var(--line);
  background:#fff;cursor:pointer;font-family:inherit;font-size:16px;color:var(--ink);
}
.option.correct{border-color:var(--ok);background:#ecfdf3;color:var(--ok)}
.option.wrong{border-color:var(--danger);background:#fff1f0;color:var(--danger)}
.feedback{font-weight:700;margin-top:8px;min-height:28px}
.footer{
  margin-top:50px;padding:26px 0;border-top:1px solid var(--line);color:var(--muted);font-size:15px;
}
.progress{height:8px;background:#e1eaf2;border-radius:999px;overflow:hidden;margin:18px 0 0}
.progress span{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--brand2));width:0%}
.nextprev{display:flex;justify-content:space-between;gap:14px;margin-top:28px;flex-wrap:wrap}
.note{
  background:#fff7e9;border:1px solid #efd7ad;border-radius:18px;padding:16px;margin:18px 0;
}
@media (max-width:900px){
  .hero-card,.topic-head,.topic-layout{grid-template-columns:1fr}
  .sidebar{position:static}
  .grid{grid-template-columns:1fr 1fr}
}
@media (max-width:620px){
  .grid{grid-template-columns:1fr}
  .hero-card,.content{padding:22px}
  .nav{align-items:flex-start;flex-direction:column}
  .navlinks a{font-size:13px}
  p{font-size:16px}
  .lead{font-size:18px}
}