:root {
    color-scheme: light dark;

    --md-sys-shape-corner-extra-small: 4px;
    --md-sys-shape-corner-large: 16px;
    --md-sys-shape-corner-extra-large: 28px;
    --md-sys-shape-corner-full: 9999px;

    --md-sys-typescale-font: Roboto, system-ui, -apple-system, 'Segoe UI', 'Noto Sans', sans-serif;
    --md-sys-typescale-mono: 'Roboto Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

    --md-sys-state-hover-opacity: 0.08;
    --md-sys-state-pressed-opacity: 0.1;

    --md-sys-motion-easing-standard: cubic-bezier(0.2, 0, 0, 1);
    --md-sys-motion-easing-emphasized-decelerate: cubic-bezier(0.05, 0.7, 0.1, 1);
    --md-sys-motion-duration-short2: 100ms;
    --md-sys-motion-duration-medium2: 300ms;

    --page-width: 48rem;
}

:root[data-theme='light'] {
    color-scheme: light;
}

:root[data-theme='dark'] {
    color-scheme: dark;
}

body {
    margin: 0;
    background: var(--md-sys-color-background);
    color: var(--md-sys-color-on-surface);
    font-family: var(--md-sys-typescale-font);
    font-size: 1rem;
    line-height: 1.5rem;
    letter-spacing: 0.03125rem;
    -webkit-font-smoothing: antialiased;
    transition:
        background-color var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-standard),
        color var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-standard);
}

:focus-visible {
    outline: 2px solid var(--md-sys-color-secondary);
    outline-offset: 2px;
}

.top-bar {
    display: flex;
    justify-content: flex-end;
    max-width: var(--page-width);
    min-height: 4rem;
    margin: 0 auto;
    padding: 0 1rem;
    box-sizing: border-box;
    align-items: center;
}

.icon-button {
    position: relative;
    isolation: isolate;
    display: grid;
    place-items: center;
    width: 2.5rem;
    height: 2.5rem;
    padding: 0;
    border: 0;
    border-radius: var(--md-sys-shape-corner-full);
    background: transparent;
    color: var(--md-sys-color-on-surface-variant);
    cursor: pointer;
}

.icon-button svg {
    width: 1.5rem;
    height: 1.5rem;
    fill: currentColor;
}

.icon-button svg[hidden] {
    display: none;
}

.icon-button::before,
#contact a[href^='mailto:']::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: -1;
    border-radius: inherit;
    background-color: currentColor;
    opacity: 0;
    transition: opacity var(--md-sys-motion-duration-short2) var(--md-sys-motion-easing-standard);
}

.icon-button:hover::before,
#contact a[href^='mailto:']:hover::before {
    opacity: var(--md-sys-state-hover-opacity);
}

.icon-button:active::before,
#contact a[href^='mailto:']:active::before {
    opacity: var(--md-sys-state-pressed-opacity);
}

.policy-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    max-width: var(--page-width);
    margin: 0 auto;
    padding: 0.5rem 1rem 2.5rem;
    box-sizing: border-box;
}

.policy-header img {
    flex-shrink: 0;
    width: 4rem;
    height: 4rem;
    border-radius: var(--md-sys-shape-corner-extra-large);
}

.policy-header div {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    min-width: 0;
}

h1 {
    margin: 0;
    font-size: 2.25rem;
    line-height: 2.75rem;
    font-weight: 500;
}

.subtitle {
    margin: 0;
    color: var(--md-sys-color-on-surface-variant);
    font-size: 1rem;
    line-height: 1.5rem;
    letter-spacing: 0.009375rem;
    font-weight: 500;
}

main {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-width: var(--page-width);
    margin: 0 auto;
    padding: 0 1rem 1.5rem;
    box-sizing: border-box;
}

main > .intro,
main > section {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 1.5rem;
    border-radius: var(--md-sys-shape-corner-extra-large);
    background: var(--md-sys-color-surface);
}

main > .intro {
    background: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
}

main > section#contact {
    background: var(--md-sys-color-tertiary-container);
    color: var(--md-sys-color-on-tertiary-container);
}

h2 {
    margin: 0;
    font-size: 1.5rem;
    line-height: 2rem;
    font-weight: 400;
}

section.level3 {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    border-radius: var(--md-sys-shape-corner-large);
    background: var(--md-sys-color-surface-container);
}

h3 {
    margin: 0;
    font-size: 1rem;
    line-height: 1.5rem;
    letter-spacing: 0.009375rem;
    font-weight: 500;
}

p {
    margin: 0;
}

main ul {
    display: flex;
    flex-direction: column;
    gap: 2px;
    margin: 0;
    padding: 0;
    list-style: none;
}

main li {
    padding: 1rem;
    border-radius: var(--md-sys-shape-corner-extra-small);
    background: var(--md-sys-color-surface-container-high);
}

main li:first-child {
    border-top-left-radius: var(--md-sys-shape-corner-large);
    border-top-right-radius: var(--md-sys-shape-corner-large);
}

main li:last-child {
    border-bottom-left-radius: var(--md-sys-shape-corner-large);
    border-bottom-right-radius: var(--md-sys-shape-corner-large);
}

section.level3 li {
    background: var(--md-sys-color-surface-container-highest);
}

a {
    color: var(--op-color-link);
    text-underline-offset: 0.2em;
    overflow-wrap: anywhere;
}

.intro a,
#contact a {
    color: inherit;
}

#contact a[href^='mailto:'] {
    position: relative;
    isolation: isolate;
    display: flex;
    align-items: center;
    width: fit-content;
    min-height: 2.5rem;
    margin-top: 0.75rem;
    padding: 0 1rem;
    border-radius: var(--md-sys-shape-corner-full);
    background: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    font-size: 0.875rem;
    line-height: 1.25rem;
    letter-spacing: 0.00625rem;
    font-weight: 500;
    text-decoration: none;
    transition: border-radius var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-standard);
}

#contact a[href^='mailto:']:hover {
    box-shadow: 0 1px 2px 0 rgb(0 0 0 / 30%), 0 1px 3px 1px rgb(0 0 0 / 15%);
}

#contact a[href^='mailto:']:active {
    border-radius: var(--md-sys-shape-corner-large);
}

code {
    padding: 0.1em 0.35em;
    border-radius: var(--md-sys-shape-corner-extra-small);
    background: color-mix(in srgb, currentColor 8%, transparent);
    font-family: var(--md-sys-typescale-mono);
    font-size: 0.875em;
    overflow-wrap: anywhere;
}

@media (min-width: 600px) {
    .policy-header {
        gap: 1.5rem;
        padding-top: 1.5rem;
    }

    .policy-header img {
        width: 5rem;
        height: 5rem;
    }

    h1 {
        font-size: 2.8125rem;
        line-height: 3.25rem;
    }

    main > .intro,
    main > section {
        padding: 2rem;
    }
}

@media (prefers-reduced-motion: no-preference) {
    @supports (animation-timeline: view()) {
        main > * {
            animation: rise linear both;
            animation-timeline: view();
            animation-range: entry 0% entry 35%;
        }
    }
}

@keyframes rise {
    from {
        opacity: 0;
        transform: translateY(2rem);
    }
}

@media print {
    :root {
        color-scheme: light;
    }

    .top-bar {
        display: none;
    }

    body,
    main > * {
        background: none !important;
        color: #000 !important;
    }

    main > * {
        animation: none !important;
        border: 1px solid #ccc;
        break-inside: avoid;
    }
}