body {
    margin: 0;
    font-family:
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        Roboto,
        Helvetica,
        Arial,
        "Apple Color Emoji",
        "Segoe UI Emoji",
        "Segoe UI Symbol",
        sans-serif;
    background-color: #f8f8f8;
}

.page-shell {
    min-width: 320px;
}

.skip-link {
    position: absolute;
    top: -9999px;
    left: 1rem;
    z-index: 1000;
    padding: 0.6rem 0.9rem;
    border-radius: 0.5rem;
    background: #1d252d;
    color: #fff;
    font-weight: 600;
}

.skip-link:focus {
    top: 1rem;
    outline: none;
    box-shadow: 0 0 0 3px #7dd3fc;
}

.site-header {
    background: #18171c;
    color: #fff;
    font-family: "Avenir Next", "Segoe UI", "Helvetica Neue", sans-serif;
}

.header-inner {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 1rem;
    max-width: 1800px;
    margin: 0 auto;
    padding: 1.1rem 20px 1rem;
}

.brand-lockup {
    display: inline-flex;
    flex-direction: column;
    align-items: flex-start;
}

.brand-logo {
    width: clamp(12rem, 34vw, 16rem);
    height: auto;
}

.brand-subtitle {
    margin: -0.875rem 0 0 clamp(3.12rem, 8.9vw, 4.2rem);
    font-size: clamp(0.7rem, 1.2vw, 0.8rem);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: #d9dbe4;
}

.header-back-link {
    margin-left: auto;
    margin-bottom: 0.12rem;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.45rem 0.75rem;
    border: 1px solid #4d5f73;
    border-radius: 999px;
    background: transparent;
    color: #ecf1f9;
    font-weight: 700;
    text-decoration: none;
    white-space: nowrap;
    transition: background-color 0.15s ease;
}

.header-back-link:hover {
    background: rgba(255, 255, 255, 0.08);
}

.header-back-link:focus-visible {
    outline: none;
    box-shadow: 0 0 0 2px #18171c, 0 0 0 5px #7dd3fc;
}

.top-bar {
    display: none;
}

.chart {
    height: 400px;
}

.hidden {
    display: none;
}

.intro {
    font-size: 0.9em;
    padding: 30px;
}

#delays {
    height: 180px;
}

#network {
    height: 600px;
}

#wordcloud {
    height: 100%;
}

#demo-content {
    background-color: #f8f8f8;
    min-width: 450px;
}

main {
    display: grid;
    gap: 20px;
    grid-template-columns: repeat(8, 1fr);
    background-color: #f8f8f8;
    padding: 20px;
    max-width: 1800px;
    margin: 0 auto;
}

h1 {
    grid-column-end: span 8;
    text-align: center;
}

.intro p:has(+ .signature) {
    margin-bottom: 5px;
    margin-left: 10px;
    margin-top: 20px;
}

.signature {
    margin-top: 0;
    margin-left: 10px;
}

.signature::before {
    content: "— ";
}

.card {
    margin: 0;
    grid-column-end: span 4;
    background-color: #fff;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 0 5px #ccc;
}

.card.small,
.card.medium {
    grid-column-end: span 3;
}

.card.large {
    grid-column-end: span 5;
}

@media only screen and (max-width: 1400px) {
    .card.small {
        grid-column-end: span 4;
    }

    .card.medium,
    .card.large {
        grid-column-end: span 4;
    }
}

@media only screen and (max-width: 1000px) {
    main {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
    }

    h1 {
        grid-column-end: span 1;
    }

    .card {
        grid-column-end: span 1;
    }

    .card.small {
        grid-column-end: span 1;
    }

    .card.medium {
        grid-column-end: span 1;
    }

    .card.large {
        grid-column-end: span 1;
    }
}

@media (max-width: 44rem) {
    .header-inner {
        align-items: flex-start;
        flex-direction: column;
    }

    .header-back-link {
        margin: 0;
    }
}

@media (prefers-color-scheme: dark) {
    main,
    body {
        background-color: #333;
    }

    #demo-content {
        background-color: #333;
        color: #fff;
    }

    .card {
        background-color: #222;
        color: #fff;
        box-shadow: 0 0 5px #000;
    }

    h1 {
        color: #fff;
    }
}