:root{
  --bg: #f6f9ff;
  --card: #ffffff;
  --text: #333333;
  --muted: #5f6b7a;
  --blue: #1f3a5f;
  --border: rgba(31,58,95,.12);
  --shadow: 0 10px 30px rgba(20, 30, 55, 0.10);
  --radius: 16px;
}

*{ box-sizing: border-box; }

body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
}

.topbar{
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .75rem 1rem;
  background: rgba(246,249,255,.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.back-btn{
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .5rem .75rem;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--border);
  box-shadow: 0 6px 18px rgba(20, 30, 55, 0.08);
  color: var(--blue);
  text-decoration: none;
  font-weight: 650;
}

.back-btn:active{ transform: translateY(1px); }

.topbar-title{
  font-weight: 650;
  color: var(--muted);
}

.wrap{
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem;
}

.page-title{
  margin: 0.5rem 0 1rem;
  font-size: clamp(1.3rem, 3.2vw, 2rem);
  color: var(--blue);
  letter-spacing: .2px;
  text-align:center;
}

.page{
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin: 0 0 1rem;
}

.card{
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem;
}

.card h2{
  margin: 0 0 .6rem;
  font-size: clamp(1.05rem, 2.4vw, 1.25rem);
  color: var(--blue);
}

.card p{
  margin: .6rem 0;

          text-align:justify;

}

.card ul{
  margin: .5rem 0 .75rem 1.15rem;
  padding: 0;

   text-align:justify;

}

.card li{
  margin: .35rem 0;
}

a{
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.note{
  color: var(--muted);
  font-style: italic;
}

.see-also{
  margin-top: .65rem;
  padding-top: .65rem;
  border-top: 1px dashed var(--border);
  color: var(--muted);
}

.cover{
  padding: .75rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cover-img{
  width: 100%;
  height: auto;
  border-radius: 12px;
  border: 1px solid var(--border);
}

.footer{
  text-align: center;
  color: var(--muted);
  padding: 1rem 0 1.5rem;
}

@media (max-width: 980px){
  .page{ grid-template-columns: 1fr; }
}

@media print{
  .topbar{ display:none; }
  body{ background:#fff; }
  .wrap{ max-width: none; padding: 0; }
  .page{ grid-template-columns: repeat(3, 1fr); gap: .5rem; margin: 0; }
  .card{ box-shadow: none; border: 1px solid #ddd; border-radius: 0; }
  a{ text-decoration:none; color:#000; }
}