* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; font-family: system-ui, Arial, sans-
serif; }
img { max-width: 100%; display: block; }

.app { padding: 16px; }
:root { --gap: 12px; }

.full { display:flex; justify-content:center; align-items:center; min-height:100vh; }
.card { padding:24px; border:1px solid #ddd; border-radius:12px; }



.nav { display:flex; align-items:center; gap: var(--gap); padding:12px
16px; border-bottom:1px solid #eee; }
.menu { display:flex; gap: var(--gap); justify-content:center; flex:1; }
.cta { padding:8px 12px; border-radius:8px; border:1px solid #ddd;
background:#fff; }

.cards { display:flex; flex-wrap:wrap; gap: var(--gap); }
.cards .card { flex:1 1 220px; padding:20px; border:1px solid #eee;
border-radius:10px; text-align:center; }

.layout { display:flex; gap: var(--gap); min-height:70vh; }
.sidebar { width:240px; border:1px solid #eee; border-radius:12px;
padding:12px; }
.content { flex:1; border:1px solid #eee; border-radius:12px;
padding:16px; }

.pricing { display:flex; gap:24px; }
.price { font-size:18px; display:flex; gap:6px; align-items:baseline; }
.amount { font-size:48px; font-weight:700; }

.grid3 { display:grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap); }
.grid3 > * { border:1px solid #eee; border-radius:10px; padding:16px;
text-align:center; }


.page {
    display: grid;
    grid-template-columns: 240px 1fr;
    grid-template-rows: auto 1fr auto;
    gap: var(--gap);
    grid-template-areas:
        "hdr hdr"
        "sbr mn"
        "ftr ftr";
    min-height: 70vh;
}

.hdr { grid-area: hdr; }
.sbr { grid-area: sbr; }
.mn  { grid-area: mn; }
.ftr { grid-area: ftr; }

.page > * {
    border: 1px solid #eee;
    border-radius: 10px;
    padding: 12px;
}

.auto { display:grid; gap: var(--gap); grid-template-columns:
repeat(auto-fit, minmax(220px, 1fr)); }
.auto .card { padding:20px; border:1px solid #eee; border-radius:12px;
text-align:center; }

.hero { display:grid; place-items:center; min-height:40vh; }
.hero > * { grid-area:1 / 1; }
.hero h1 { background: rgba(0,0,0,.45); color:#fff; padding:16px 24px;
border-radius:12px; }

.mf { display:grid; gap: var(--gap); grid-template-columns: 1fr; }

@media (min-width: 768px){ .mf { grid-template-columns: repeat(3, 1fr); }
}
.mf > * { border:1px solid #eee; border-radius:10px; padding:16px; text-align:center; }

.rnav { display:flex; justify-content:space-between; align-items:center;
padding:8px 12px; border-bottom:1px solid #eee; }
.menu nav { display:flex; flex-direction:column; gap:8px; padding:8px 0;
}
@media (min-width: 768px){
.menu > summary { display:none; }
.menu nav { display:flex; flex-direction:row; gap:16px; }
.menu[open] > nav, .menu > nav { display:flex; }
}

.title { font-size: clamp(1.5rem, 2.5vw + 1rem, 3rem); line-height:1.15;
}

.rf { display:grid; gap: var(--gap); grid-template-columns: 1fr; max-width:720px; }
.rf label { display:flex; flex-direction:column; gap:6px; }
.rf input { padding:10px; border:1px solid #ddd; border-radius:8px; }
.rf button { padding:12px; border:0; border-radius:10px; background:#111;
color:#fff; }
@media (min-width: 640px){
.rf { grid-template-columns: 1fr 1fr; }
.rf button { grid-column: 1 / -1; }
}

@media (prefers-color-scheme: dark){ body { background:#0b0b0b;
color:#eaeaea; } }

.card { container-type: inline-size; width: 100%;
    padding: 24px;
    border: 1px solid #ddd;
    border-radius: 12px; }
@container (min-width: 420px){ .card { display:grid; grid-template-columns: 120px 1fr; } }