:root {
    --bg: #0a0a0a;
    --panel: #111111;
    --line: #232323;
    --text: #ededed;
    --muted: #9a9a9a;
    --accent: #3ddc84;
    --red: #ff6b5e;
    --sans: Geist, ui-sans-serif, -apple-system, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
    --mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
    color-scheme: dark;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 72px;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 400 16px/1.6 var(--sans);
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, p, ol, ul, dl, dd, pre, figure {
    margin: 0;
    padding: 0;
}

ol, ul {
    list-style: none;
}

a {
    color: inherit;
}

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

code, pre {
    font-family: var(--mono);
}

.wrap {
    width: min(1080px, 100%);
    margin-inline: auto;
    padding-inline: 24px;
}

.top {
    position: sticky;
    top: 0;
    z-index: 2;
    border-bottom: 1px solid var(--line);
    background: rgb(10 10 10 / 0.86);
    backdrop-filter: blur(10px);
}

.top-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
}

.logo {
    font: 500 0.98rem var(--mono);
    letter-spacing: -0.02em;
    text-decoration: none;
}

.top nav {
    display: flex;
    gap: 24px;
    font-size: 0.9rem;
}

.top nav a {
    color: var(--muted);
    text-decoration: none;
    transition: color 120ms ease;
}

.top nav a:hover {
    color: var(--text);
}

.hero {
    padding-block: 88px 72px;
}

h1 {
    max-width: 14em;
    font-size: clamp(2.5rem, 6vw, 4.25rem);
    font-weight: 600;
    line-height: 1.06;
    letter-spacing: -0.035em;
}

.lede {
    max-width: 38em;
    margin-top: 22px;
    color: var(--muted);
    font-size: clamp(1.08rem, 1.7vw, 1.25rem);
    line-height: 1.5;
}

.install {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px 20px;
    margin-top: 28px;
    font-size: 0.92rem;
}

.install code {
    padding: 9px 14px;
    border: 1px solid var(--line);
    border-radius: 7px;
    background: var(--panel);
    font-size: 0.88rem;
}

.install a {
    color: var(--muted);
    text-underline-offset: 3px;
}

.install a:hover {
    color: var(--text);
}

.install .repo {
    color: var(--text);
    text-decoration: none;
}

.install .repo:hover code {
    border-color: var(--muted);
}

.term {
    min-width: 0;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--panel);
    overflow: hidden;
}

.term figcaption {
    padding: 10px 16px;
    border-bottom: 1px solid var(--line);
    color: var(--muted);
    font: 400 0.8rem var(--mono);
}

.term pre {
    padding: 18px 16px;
    font-size: 0.82rem;
    line-height: 1.65;
    overflow-x: auto;
}

.hero-term {
    margin-top: 48px;
}

.p,
.d {
    color: var(--muted);
}

.b {
    font-weight: 500;
}

.g {
    color: var(--accent);
}

.r {
    color: var(--red);
}

.caption {
    padding: 0 16px 14px;
    color: var(--muted);
    font-size: 0.8rem;
}

.band {
    padding-block: 72px;
    border-top: 1px solid var(--line);
}

main > .band {
    border-top: 0;
    position: relative;
}

main > .band::before {
    content: "";
    position: absolute;
    inset: 0 24px auto;
    height: 1px;
    background: var(--line);
}

h2 {
    color: var(--accent);
    font: 500 0.85rem var(--mono);
}

.big {
    max-width: 22em;
    margin-top: 12px;
    color: var(--text) !important;
    font-size: clamp(1.7rem, 3.4vw, 2.5rem);
    font-weight: 600;
    line-height: 1.14;
    letter-spacing: -0.028em;
}

.big.small {
    font-size: clamp(1.5rem, 2.6vw, 2rem);
}

.band p:not(.big):not(.caption) {
    margin-top: 16px;
    max-width: 38em;
    color: var(--muted);
}

.band p code {
    color: var(--text);
    font-size: 0.9em;
}

.split {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
    gap: 56px;
    align-items: start;
}

#why {
    grid-template-columns: 180px minmax(0, 1fr);
}

#why .big {
    margin-top: 0;
}

.steps {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 32px;
    margin-top: 28px;
    counter-reset: step;
}

.steps li {
    counter-increment: step;
}

.steps li::before {
    content: counter(step);
    color: var(--muted);
    font: 400 0.85rem var(--mono);
}

h3 {
    margin-top: 6px;
    font-size: 1.02rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.steps p {
    margin-top: 6px !important;
    font-size: 0.95rem;
}

.rules {
    margin-top: 24px;
    border-top: 1px solid var(--line);
}

.rules li {
    padding-block: 10px;
    border-bottom: 1px solid var(--line);
    color: var(--muted);
    font-size: 0.95rem;
}

.rules strong {
    color: var(--text);
    font-weight: 500;
}

.features {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 32px;
    margin-top: 24px;
}

.features dt {
    font-weight: 600;
}

.features dd {
    margin-top: 6px;
    color: var(--muted);
    font-size: 0.95rem;
}

.lists {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 32px 56px;
    max-width: 760px;
    margin-top: 28px;
}

.lists li {
    margin-top: 6px;
    color: var(--muted);
    font-size: 0.95rem;
}

footer {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 6px 24px;
    padding-block: 28px 44px;
    color: var(--muted);
    font-size: 0.88rem;
}

footer .logo {
    color: var(--text);
}

@media (max-width: 900px) {
    .split,
    #why {
        grid-template-columns: minmax(0, 1fr);
        gap: 28px;
    }

    #why {
        gap: 12px;
    }

    .steps,
    .features {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 620px) {
    .wrap {
        padding-inline: 16px;
    }

    main > .band::before {
        inset-inline: 16px;
    }

    .top nav a:nth-child(3),
    .top nav a:nth-child(5) {
        display: none;
    }

    .top nav {
        gap: 18px;
    }

    .hero {
        padding-block: 56px;
    }

    .band {
        padding-block: 56px;
    }

    .steps,
    .features,
    .lists {
        grid-template-columns: minmax(0, 1fr);
    }

    .term pre {
        font-size: 0.74rem;
    }
}

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