/* Paleta:
  --azul: #146482
  --naranja: #F78E43 (uso comedido)
  --beige1: #FFDEBD
  --beige2: #ffecd9
  --white: #FFFFFF
*/
:root{
  --azul:#146482;
  --naranja:#F78E43;
  --beige1:#FFDEBD;
  --beige2:#ffecd9;
  --white:#FFFFFF;
  --muted:#6b7b80;
}
*{box-sizing:border-box}
body{font-family:Inter, system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial; margin:0; color:#123; background:var(--beige2)}
.site-header{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;background:linear-gradient(90deg,var(--white),var(--beige2));border-bottom:1px solid rgba(0,0,0,0.05)}
.brand a{font-weight:700;color:var(--azul);text-decoration:none;font-size:20px}
.main-nav a{margin-left:16px;text-decoration:none;color:var(--muted);padding:6px 8px;border-radius:6px}
.main-nav a.active, .main-nav a:hover{color:var(--azul);background:rgba(20,100,130,0.06)}
.container{max-width:1100px;margin:24px auto;padding:0 16px}
.hero{height:220px;overflow:hidden;border-radius:10px}
.slider{display:flex;transition:transform 0.6s ease}
.slide{min-width:100%;background-size:cover;background-position:center;height:220px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-top:18px}
.card{background:var(--white);padding:14px;border-radius:10px;box-shadow:0 4px 18px rgba(20,100,130,0.06)}
.card h3{margin:0 0 6px 0;color:var(--azul)}
.video-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px}
.video-item{display:flex;gap:12px;align-items:flex-start;background:var(--white);padding:10px;border-radius:10px;transition:transform 0.18s}
.video-item:hover{transform:translateY(-4px);box-shadow:0 8px 30px rgba(20,100,130,0.06)}
.thumb{width:120px;height:70px;object-fit:cover;border-radius:6px}
.video-meta h3{margin:0 0 6px 0;font-size:16px;color:var(--azul)}
.description{color:var(--muted);font-size:14px;max-height:38px;overflow:hidden}
.levels{display:flex;gap:12px;flex-wrap:wrap}
.level-card{display:inline-block;padding:12px 18px;background:var(--white);border-radius:10px;text-decoration:none;color:var(--azul);box-shadow:0 4px 18px rgba(0,0,0,0.03)}
.lesson-list{display:flex;flex-direction:column;gap:12px}
.lesson-item{display:flex;gap:12px;background:var(--white);padding:10px;border-radius:8px}
.thumb-small{width:88px;height:64px;object-fit:cover;border-radius:6px}
.lesson-meta h3{margin:0 0 6px 0;color:var(--azul)}
.kana-grid{background:linear-gradient(180deg,var(--beige1),var(--beige2));padding:14px;border-radius:10px}
.kana-row{display:flex;gap:12px;flex-wrap:wrap}
.kana-card{background:var(--white);padding:18px;border-radius:8px;min-width:68px;text-align:center;font-size:22px}
.romaji{font-size:12px;color:var(--muted)}
.site-footer{padding:18px;text-align:center;color:var(--muted);font-size:14px}
@media (max-width:720px){.hero{height:160px}.slide{height:160px}.video-item{flex-direction:column;align-items:center}.thumb{width:100%;height:160px}
}
/* Uso comedido del naranja en botones y acentos */
.btn-primary{background:linear-gradient(90deg,var(--naranja),#ff8f5a);color:var(--white);padding:8px 12px;border-radius:8px;text-decoration:none}