:root{
  --primary:#004d98;
  --primary-700:#00386e;
  --muted:#6b7280;
  --bg: linear-gradient(180deg,#eef6ff 0%,#f3f8ff 100%);
  --card-shadow: 0 18px 60px rgba(8,24,64,0.08);
  --max-width:1180px;
  --radius:12px;
}

html,body{height:100%;margin:0;font-family:"Poppins",system-ui,-apple-system,Segoe UI,Roboto,Arial;color:#071022;background:var(--bg);}
.container{max-width:var(--max-width);margin:0 auto;padding:0 20px}
a{color:inherit;text-decoration:none}

/* HERO */
.hero{
  margin-top:28px;
  background: linear-gradient(135deg,#0a3a6f 0%, #09325a 60%);
  color:#fff;
  padding:56px 20px;
  border-radius:18px;
  box-shadow: var(--card-shadow);
  margin-bottom:28px;
  overflow:hidden;
}
.hero h1{font-size:2rem;margin:0 0 8px}
.hero p{opacity:.95;max-width:68ch}

/* grid */
.section{max-width:var(--max-width);margin:28px auto;padding:0 20px}
.section .grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;margin-top:14px}
.card{background:#fff;border-radius:12px;padding:12px;box-shadow:0 12px 30px rgba(10,20,50,0.06);transition:transform .2s;cursor:pointer;display:flex;flex-direction:column}
.card:hover{transform:translateY(-8px)}
.card img{width:100%;height:160px;object-fit:cover;border-radius:8px;margin-bottom:10px}
.card h3{color:var(--primary-700);margin:6px 0}
.card p{color:var(--muted);font-size:.95rem;margin:0 0 8px}
.tag{font-size:.8rem;color:var(--muted);background:rgba(0,0,0,0.03);padding:6px 8px;border-radius:8px;display:inline-block}

/* detail panel */
.detail {
  display:none;
  margin:30px auto 60px;
  max-width:1000px;
  background: linear-gradient(180deg,#fff,#fbfdff);
  border-radius:14px;
  padding:22px;
  box-shadow: var(--card-shadow);
  border:1px solid rgba(8,30,80,0.04);
}
.detail.show{display:block}
.detail-header{display:flex;gap:18px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.detail-header h2{margin:0;color:var(--primary-700)}
.detail-grid{display:grid;grid-template-columns:1fr 360px;gap:18px;margin-top:18px}
@media(max-width:980px){ .detail-grid{grid-template-columns:1fr} }
.detail-hero img{width:100%;height:380px;object-fit:cover;border-radius:10px;display:block}

/* right column (info only) */
.widget{background:#fff;border-radius:12px;padding:14px;box-shadow:0 10px 28px rgba(6,16,36,0.06);border:1px solid #eef6ff}
.widget h4{margin:0 0 8px 0;color:var(--primary-700)}
.info-block{color:var(--muted);margin-top:8px}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px}
.chip{background:rgba(0,77,152,0.06);color:var(--primary-700);padding:6px 8px;border-radius:8px;font-weight:600}

.tips{margin-top:10px;color:var(--muted)}
.small{font-size:.9rem;color:var(--muted)}
.btn{padding:8px 12px;border-radius:10px;border:none;cursor:pointer;font-weight:700}
.btn-ghost{background:transparent;border:1px solid rgba(7,18,40,0.06);color:var(--primary-700)}

.reveal{opacity:0;transform:translateY(8px);transition:all .6s ease}
.reveal.visible{opacity:1;transform:none}
/* Back button (top-left) */
.back-btn{
  position:fixed;
  left:18px;
  top:18px;
  z-index:1600;
  background:rgba(255,255,255,0.96);
  color:var(--primary-700);
  border-radius:10px;
  padding:8px 12px;
  box-shadow:0 8px 24px rgba(8,24,64,0.12);
  font-weight:700;
  text-decoration:none;
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.back-btn:hover{transform:translateY(-2px)}