:root{
  --bg:#0b1220;
  --navy:#10213c;
  --ink:#0e2a47;
  --text:#0f172a;
  --muted:#64748b;
  --paper:#f6f7fb;
  --brand:#1e90ff; /* aksen biru muda */
  --brand-ink:#0e2a47;
  --white:#ffffff;
  --card:#ffffff;
  --shadow:0 10px 30px rgba(2,12,27,0.08);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:Inter,system-ui,Segoe UI,Roboto,Arial,sans-serif;color:var(--text);background:#fff;scroll-behavior:smooth}
img{max-width:100%;height:auto;display:block}

.container{max-width:1120px;margin:0 auto;padding:0 20px}
.section{padding:72px 0}
.section.alt{background:var(--paper)}
h1,h2,h3{margin:0 0 12px}
h1{font-size:clamp(32px,4vw,48px);line-height:1.1;color:var(--ink)}
h2{font-size:clamp(24px,3vw,34px)}
h3{font-size:20px}
p{color:#324055;line-height:1.7}
a{color:var(--brand-ink);text-decoration:none}
a:hover{text-decoration:underline}

.site-header{position:sticky;top:0;z-index:10;background:#fff;border-bottom:1px solid #eef0f4}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink)}
.brand img{width:36px;height:auto}
.menu{display:flex;align-items:center;gap:18px}
.menu a{font-weight:600;color:var(--ink)}
.menu .btn{padding:10px 14px;border-radius:12px;background:var(--ink);color:#fff}
.menu-toggle{display:none;background:transparent;border:0;font-size:26px}

.hero{background:linear-gradient(180deg,#fafdff, #ffffff)}
.hero-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:32px;align-items:center;padding:48px 0}
.hero-copy p{margin:12px 0 18px}
.hero-copy .accent{color:var(--brand)}
.cta{display:flex;gap:12px;margin:10px 0 2px}
.btn{display:inline-block;padding:12px 18px;border-radius:14px;border:1px solid #dfe6ee;background:#fff;font-weight:700}
.btn-primary{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn-ghost{background:#fff;color:var(--ink)}
.badges{display:flex;gap:16px;flex-wrap:wrap;margin:14px 0 0;padding:0;list-style:none;color:var(--muted);font-weight:600}
.hero-logo{filter:drop-shadow(0 12px 24px rgba(0,0,0,.08));max-width:320px;margin-inline:auto}

.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}

.card{background:var(--card);border:1px solid #eef0f4;border-radius:16px;padding:18px;box-shadow:var(--shadow)}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:16px}
.list{list-style:none;padding:0;margin:0}
.list li{display:flex;gap:10px;align-items:flex-start;margin:10px 0;color:#2d3a4e}
.list li span{font-size:20px}

.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:16px}
.book{aspect-ratio:3/4}
.book .cover{height:100%;border-radius:12px;border:1px solid #e5ecf2;background:linear-gradient(135deg,#f0f6ff,#ffffff);display:flex;align-items:center;justify-content:center;font-weight:800;color:#30445f}

.value{background:#fff;border:1px solid #eef0f4;border-radius:14px;padding:18px;box-shadow:var(--shadow)}

.form label{display:block;font-weight:700;margin:8px 0 6px;color:var(--ink)}
.form input,.form textarea{width:100%;padding:12px 12px;border:1px solid #dfe6ee;border-radius:12px;font:inherit}
.form input:focus,.form textarea:focus{outline:2px solid #b9d2ff;border-color:#b9d2ff}
.form-note{font-size:13px;color:var(--muted)}

.site-footer{border-top:1px solid #eef0f4;background:#fff}
.foot{display:flex;align-items:center;justify-content:space-between;padding:18px 0}
.brand-mini{display:flex;align-items:center;gap:10px;font-weight:800}
.brand-mini img{width:28px}

.note{font-size:13px;color:var(--muted);margin-top:10px}
.container { max-width: 1100px; margin: 0 auto; padding: 24px; font-family: system-ui, sans-serif; }
h2 { margin-bottom: 16px; }
.gallery {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}
.book {
  aspect-ratio: 2 / 3;
  background: #0f172a;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 8px 20px rgba(0,0,0,.25);
  transition: transform .2s ease, box-shadow .2s ease;
}
.book:hover { transform: translateY(-4px); box-shadow: 0 14px 30px rgba(0,0,0,.35); }
.book img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display:block;
}
.note { color: #64748b; margin-top: 12px; }

/* Responsif */
@media (max-width: 1024px) { .gallery { grid-template-columns: repeat(4, 1fr); } }
@media (max-width: 640px)  { .gallery { grid-template-columns: repeat(2, 1fr); } }

/* Responsive */
@media (max-width: 900px){
  .hero-inner{grid-template-columns:1fr;gap:10px}
  .grid-2{grid-template-columns:1fr}
  .grid-3,.cards,.gallery{grid-template-columns:1fr 1fr}
}
@media (max-width: 600px){
  .menu{display:none;position:absolute;top:62px;right:20px;background:#fff;border:1px solid #eef0f4;border-radius:12px;flex-direction:column;gap:8px;padding:12px;box-shadow:var(--shadow)}
  .menu.show{display:flex}
  .menu-toggle{display:block;color:var(--ink)}
  .cards,.gallery{grid-template-columns:1fr}
}