:root {
    color-scheme: light dark;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --radius: 18px;
}
* { box-sizing: border-box; }
body {
    margin: 0;
    background: Canvas;
    color: CanvasText;
}
.topbar {
    position: sticky;
    top: 0;
    backdrop-filter: blur(18px);
    border-bottom: 1px solid color-mix(in srgb, CanvasText 12%, transparent);
    padding: 16px 20px;
}
.topbar div {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    align-items: baseline;
    gap: 12px;
}
.topbar strong { font-size: 1.25rem; }
.topbar span { opacity: .66; font-size: .9rem; }
.container {
    width: min(1100px, calc(100% - 28px));
    margin: 28px auto 56px;
}
.hero {
    padding: 18px 2px 24px;
}
.hero h1 {
    margin: 4px 0 8px;
    font-size: clamp(1.75rem, 5vw, 3rem);
}
.hero p { opacity: .72; max-width: 700px; }
.eyebrow {
    text-transform: uppercase;
    letter-spacing: .12em;
    font-size: .72rem;
    font-weight: 700;
}
.grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}
.card {
    min-height: 130px;
    padding: 20px;
    border: 1px solid color-mix(in srgb, CanvasText 12%, transparent);
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}
.card span { opacity: .68; }
.card strong { font-size: clamp(1.6rem, 4vw, 2.4rem); }
.primary {
    grid-column: span 2;
    min-height: 165px;
}
.formula {
    margin-top: 18px;
    padding: 20px;
    border-radius: var(--radius);
    border: 1px dashed color-mix(in srgb, CanvasText 20%, transparent);
}
.formula h2 { margin-top: 0; }
@media (max-width: 680px) {
    .grid { grid-template-columns: 1fr; }
    .primary { grid-column: span 1; }
}