:root { --primary:#4f46e5; --primary-dark:#4338ca; --bg:#f8fafc; --card:#fff; --text:#1e293b; --muted:#64748b; --border:#e2e8f0; }
* { margin:0; padding:0; box-sizing:border-box; }
body { font-family:'Segoe UI',system-ui,sans-serif; background:var(--bg); color:var(--text); line-height:1.6; }
.container { max-width:1100px; margin:0 auto; padding:0 20px; }

.navbar { background:#fff; border-bottom:1px solid var(--border); padding:14px 0; position:sticky; top:0; z-index:10; }
.nav-inner { display:flex; justify-content:space-between; align-items:center; }
.logo { font-size:1.3rem; font-weight:700; }
.navbar nav a { margin-left:18px; text-decoration:none; color:var(--text); }

.hero { padding:80px 0 60px; text-align:center; background:linear-gradient(135deg,#eef2ff,#f8fafc); }
.hero h1 { font-size:2.6rem; margin-bottom:16px; }
.lead { font-size:1.15rem; color:var(--muted); max-width:640px; margin:0 auto 28px; }
.hero-actions { display:flex; gap:12px; justify-content:center; }

.section { padding:56px 0; }
.section-alt { background:#fff; border-top:1px solid var(--border); border-bottom:1px solid var(--border); }
.section h2 { text-align:center; margin-bottom:32px; }

.grid-3 { display:grid; grid-template-columns:repeat(auto-fit,minmax(260px,1fr)); gap:20px; }
.card { background:var(--card); border:1px solid var(--border); border-radius:12px; padding:24px; }
.card h3 { margin-bottom:8px; }
.card ul { list-style:none; margin:14px 0; }
.card ul li { padding:3px 0; }

.paket { position:relative; text-align:center; }
.paket-populer { border:2px solid var(--primary); }
.badge { position:absolute; top:-12px; left:50%; transform:translateX(-50%); background:var(--primary); color:#fff; padding:3px 12px; border-radius:999px; font-size:.8rem; }
.harga { font-size:2rem; font-weight:800; margin:10px 0; }
.harga small { font-size:.9rem; font-weight:400; color:var(--muted); }
.deskripsi { color:var(--muted); }

.btn { display:inline-block; padding:10px 22px; border-radius:8px; text-decoration:none; border:1px solid transparent; cursor:pointer; font-size:1rem; }
.btn-primary { background:var(--primary); color:#fff; }
.btn-primary:hover { background:var(--primary-dark); }
.btn-outline { border-color:var(--primary); color:var(--primary); background:transparent; }
.btn-lg { padding:13px 30px; font-size:1.05rem; }

.form label { display:block; margin:14px 0 6px; font-weight:600; }
.form input { width:100%; padding:11px 14px; border:1px solid var(--border); border-radius:8px; font-size:1rem; }
.alert { padding:12px 16px; border-radius:8px; margin-bottom:16px; }
.alert-error { background:#fef2f2; color:#b91c1c; border:1px solid #fecaca; }
.muted { color:var(--muted); font-size:.9rem; }
.footer { padding:28px 0; text-align:center; color:var(--muted); border-top:1px solid var(--border); margin-top:40px; }
.rincian { width:100%; border-collapse:collapse; margin:14px 0; }
.rincian td { padding:8px 4px; border-bottom:1px solid var(--border); }
.rincian td:last-child { text-align:right; font-variant-numeric:tabular-nums; }
.rincian .total td { border-bottom:none; border-top:2px solid var(--border); font-size:1.05rem; }
.radio { display:block; padding:8px 0; cursor:pointer; }
.usage { background:#f1f5f9; border:1px solid var(--border); border-radius:8px; padding:12px; font-size:.9rem; overflow-x:auto; }