.geometry-page {
    font-family: system-ui,sans-serif;
    color: #1f2b35;
    line-height: 1.6;
    padding-bottom: 25px;
    padding-top: 0;
}

    .geometry-page [hidden] {
        display: none !important
    }

    .geometry-page header {
        padding:0 0 10px 0;
    }

    .geometry-page .lead {
        color: #536775;
        max-width: 760px
    }

.geometry-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 10px 0 25px
}

    .geometry-nav a {
        padding: 8px 14px;
        background: #eef4f8;
        border-radius: 5px;
        text-decoration: none;
        color: #123f66
    }

        .geometry-nav a[aria-current] {
            background: #123f66;
            color: white
        }

.area-layout {
    display: grid;
    grid-template-columns: minmax(0,1fr) minmax(0,1fr);
    gap: 24px;
    align-items: start
}

.area-card {
    padding: 25px;
    border: 1px solid #d7e1e7;
    border-radius: 10px;
    background: #f6f9fb;
    min-width: 0
}

.area-result {
    background: white;
    border-top: 4px solid #123f66
}

.area-answer {
    font-size: 2rem;
    font-weight: 750;
    color: #123f66;
    overflow-wrap: anywhere
}

.geometry-page label {
    display: block
}

.geometry-page input, .geometry-page select {
    font: inherit
}

.geometry-page button {
    min-height: 44px
}

.geometry-page .actions {
    display: flex;
    gap: 10px
}

.geometry-page .secondary {
    background: #e5edf2
}

.geometry-page .note {
    color: #536775;
    font-size: .85rem
}

.geometry-page svg {
    width: 100%;
    height: 190px
}

    .geometry-page svg .shape {
        fill: #e2eef6;
        stroke: #123f66;
        stroke-width: 3
    }

    .geometry-page svg .guide {
        fill: none;
        stroke: #ba7e14;
        stroke-width: 2;
        stroke-dasharray: 5 4
    }

.geometry-page .guide-content {
    margin-top: 35px;
    max-width: 900px
}

.geometry-page details {
    padding: 15px 0;
    border-bottom: 1px solid #d7e1e7
}

.geometry-page summary {
    cursor: pointer;
    font-weight: 650;
    color: #123f66
}

.geometry-page :focus-visible {
    outline: 3px solid #80add0;
    outline-offset: 3px
}

.geometry-tools {
    display: grid;
    grid-template-columns: repeat(2,minmax(0,1fr));
    gap: 20px
}

    .geometry-tools a {
        display: block;
        text-decoration: none;
        color: #123f66
    }

    .geometry-tools p {
        color: #536775
    }

@media(max-width:720px) {
    .area-layout, .geometry-tools {
        grid-template-columns: 1fr
    }

    .geometry-page.wrap {
        width: 100%;
        padding:0 16px 16px;
    }

    .area-card {
        padding: 20px
    }
}