:root {
    color-scheme: dark;
    --bg: #080a0e;
    --surface: #10141b;
    --line: #29303a;
    --text: #f4f7fb;
    --muted: #9ca7b5;
    --accent: #38bdf8;
    --max: 1180px
}

* {
    box-sizing: border-box
}

html {
    scroll-behavior: smooth
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 16px/1.65 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif
}

a {
    color: inherit
}

.skip-link {
    position: fixed;
    top: 8px;
    left: 8px;
    z-index: 10;
    transform: translateY(-150%);
    padding: 10px 14px;
    background: #fff;
    color: #000
}

.skip-link:focus {
    transform: none
}

.site-header, main, footer {
    width: min(100% - 40px, var(--max));
    margin-inline: auto
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    border-bottom: 1px solid rgba(42, 48, 58, 0.85);
    background-color: #000;
    width: 100%;
}

.container {
    width: min(100% - 32px, var(--max));
    margin-inline: auto;
}

.header-inner {
    display: flex;
    min-height: 72px;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}


.brand {
    display: flex;
    align-items: center;
    gap: 14px;
    font-weight: 750;
    text-decoration: none
}

.brand img {
    display: block;
    width: 140px;
    max-width: 48vw;
    height: auto
}

.brand span {
    color: var(--muted);
    font-weight: 500
}

.site-header nav {
    display: flex;
    gap: 24px
}

.site-header nav a, footer a {
    color: var(--muted);
    text-decoration: none
}

.site-header nav a:hover, .site-header nav a:focus-visible, footer a:hover {
    color: #fff
}

.hero {
    padding: 100px 0 84px;
    max-width: 820px
}

.eyebrow, .status {
    color: var(--accent);
    font-size: .78rem;
    font-weight: 750;
    letter-spacing: .08em;
    text-transform: uppercase
}

.hero h1 {
    margin: 8px 0 20px;
    font-size: clamp(2.5rem, 7vw, 5.5rem);
    line-height: 1;
    letter-spacing: 0
}

.hero > p:last-child {
    max-width: 700px;
    color: var(--muted);
    font-size: 1.2rem
}

.experiments {
    padding: 72px 0 110px;
    border-top: 1px solid var(--line)
}

.section-head {
    margin-bottom: 30px
}

.section-head h2 {
    margin: 4px 0;
    font-size: 2rem
}

.experiment-card {
    display: grid;
    grid-template-columns:minmax(0, 1fr) 260px;
    gap: 36px;
    padding: 32px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--surface)
}

.experiment-card h3 {
    margin: 10px 0 12px;
    font-size: 1.6rem
}

.experiment-card p {
    max-width: 700px;
    color: var(--muted)
}

.experiment-card dl {
    margin: 0
}

.experiment-card dl div {
    display: grid;
    grid-template-columns:88px 1fr;
    gap: 10px;
    padding: 9px 0;
    border-bottom: 1px solid var(--line)
}

.experiment-card dt {
    color: var(--muted)
}

.experiment-card dd {
    margin: 0;
    font-weight: 650
}

.open {
    grid-column: 1/-1;
    width: max-content;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: #fff;
    font-weight: 700;
    text-decoration: none;
    border-bottom: 1px solid var(--accent)
}

footer {
    display: flex;
    justify-content: space-between;
    padding: 28px 0;
    border-top: 1px solid var(--line);
    color: var(--muted)
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 4px
}

@media (max-width: 700px) {
    .site-header {
        align-items: flex-start;
        flex-direction: column;
        padding: 18px 0
    }

    .brand {
        align-items: flex-start;
        flex-direction: column;
        gap: 4px
    }

    .hero {
        padding: 64px 0
    }

    .experiment-card {
        grid-template-columns:1fr;
        padding: 22px
    }

    .open {
        grid-column: 1
    }

    .site-header, main, footer {
        width: min(100% - 24px, var(--max))
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto
    }
}