:root {
    color-scheme: light;
    --pv-navy: #0b2e4f;
    --pv-blue: #1d6fa5;
    --pv-muted: #5b6878;
    --pv-rule: #dbe2ea;
}
* { box-sizing: border-box; }
body { margin: 0; background: transparent; color: var(--pv-navy); font-family: system-ui, -apple-system, "Segoe UI", sans-serif; line-height: 1.6; }
.module-catalogue { max-width: 1200px; margin: auto; padding: clamp(1rem, 4vw, 2.5rem); background: #f6f8fb; border-radius: 16px; overflow-wrap: anywhere; }
.catalogue-header { padding: clamp(1.25rem, 4vw, 3rem); background: linear-gradient(135deg, #eaf2f8, #fff); border: 1px solid var(--pv-rule); border-radius: 14px; }
.portavis-logo { display: block; max-width: 100%; height: auto; margin-bottom: 1.5rem; }
.kicker { font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .12em; color: var(--pv-blue); }
h1 { font-size: clamp(1.7rem, 4vw, 2.6rem); line-height: 1.15; letter-spacing: -.025em; margin: .5rem 0 1rem; }
.introduction { max-width: 720px; margin: 0; color: var(--pv-muted); font-size: 1.05rem; }
.section-heading { margin: 2rem 0 1rem; }
.section-heading h2 { margin: 0; font-size: 1.25rem; }
.section-heading p { margin: .25rem 0 0; color: var(--pv-muted); font-size: .9rem; }
.module-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); gap: 1rem; align-items: start; }
.module-card { background: #fff; border: 1px solid var(--pv-rule); border-top: 3px solid var(--pv-blue); border-radius: 12px; padding: 1.25rem; transition: border-color .2s ease, box-shadow .2s ease; }
.module-card:focus-within { border-color: #91b7d3; box-shadow: 0 6px 20px rgba(11, 46, 79, .08); }
.module-marker { display: inline-flex; align-items: center; justify-content: center; width: 2.5rem; height: 2.5rem; border-radius: 10px; background: #eef5fa; color: var(--pv-blue); font-size: .9rem; font-weight: 700; }
.module-card h3 { margin: .75rem 0 .4rem; font-size: 1.05rem; line-height: 1.4; }
.module-card p { margin: 0; color: var(--pv-muted); font-size: .9rem; }
.module-features { margin-top: 1rem; border-top: 1px solid var(--pv-rule); }
.module-features summary { display: flex; align-items: center; justify-content: space-between; gap: .75rem; min-height: 44px; padding: .65rem .6rem; margin-top: .4rem; color: var(--pv-blue); font-size: .85rem; font-weight: 700; cursor: pointer; list-style: none; border-radius: 8px; transition: color .2s ease, background-color .2s ease; }
.module-features summary::-webkit-details-marker { display: none; }
.module-features summary::after { content: ""; width: .5rem; height: .5rem; border-right: 2px solid currentColor; border-bottom: 2px solid currentColor; transform: rotate(45deg); flex: 0 0 auto; margin-right: .25rem; transition: transform .26s cubic-bezier(.2, .8, .2, 1); }
.module-features:not([data-expanded])[open] summary::after,
.module-features[data-expanded="true"] summary::after { transform: rotate(225deg); }
.module-features:not([data-expanded])[open] summary,
.module-features[data-expanded="true"] summary { background: #eef5fa; color: var(--pv-navy); }
.module-features summary:hover { color: var(--pv-navy); background: #eef5fa; }
.module-features summary:active { background: #e0edf7; }
.module-features summary:focus-visible { outline: 3px solid var(--pv-blue); outline-offset: 3px; }
.module-features-content { display: flow-root; padding: .25rem .6rem 0; }
.module-features-content ul { padding-left: 1.2rem; margin: .75rem 0 0; color: var(--pv-muted); font-size: .85rem; }
.module-features-content li { padding: .2rem 0; }
.module-features-content li::marker { color: var(--pv-blue); }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.core-card { border-top-color: #dbe2ea; }
.included { display: inline-block; background: #e8f3ec; color: #146c43; font-size: .7rem; font-weight: 700; padding: .2rem .6rem; border-radius: 99px; }
.catalogue-footer { display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; border-top: 1px solid var(--pv-rule); margin-top: 2rem; padding-top: 1.25rem; font-size: .8rem; color: var(--pv-muted); }
.catalogue-footer strong { color: var(--pv-navy); }

@media (hover: hover) {
    .module-card:hover { border-color: #91b7d3; box-shadow: 0 6px 20px rgba(11, 46, 79, .08); }
}

@media (prefers-reduced-motion: reduce) {
    .module-card,
    .module-features summary,
    .module-features summary::after { transition: none; }
}