:root {
    --bg: #020807;
    --surface: #071411;
    --surface-2: #0b1c17;
    --text: #f5f8f6;
    --muted: #8d9b96;
    --green: #00dfa2;
    --cyan: #00d9ff;
    --lime: #b7ff3c;
    --line: rgba(125, 255, 218, .12);
    --gradient: linear-gradient(
        110deg,
        #00d9ff 0%,
        #00dfa2 55%,
        #b7ff3c 100%
    );
    --max: 1180px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background:
        radial-gradient(
            circle at 10% 10%,
            rgba(0, 223, 162, .08),
            transparent 30%
        ),
        var(--bg);
    color: var(--text);
    font-family: "Inter", sans-serif;
    line-height: 1.75;
}

img {
    max-width: 100%;
}

a {
    color: inherit;
    text-decoration: none;
}

.wrap {
    width: min(calc(100% - 48px), var(--max));
    margin-inline: auto;
}


/* HEADER */

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--line);
    background: rgba(2, 8, 7, .82);
    backdrop-filter: blur(18px);
}

.nav {
    height: 82px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand img {
    width: 150px;
    display: block;
}

.nav nav {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav nav a {
    color: var(--muted);
    font-size: 14px;
    transition: color .25s ease;
}

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

.nav .nav-cta {
    padding: 11px 17px;
    border: 1px solid rgba(255,255,255,.12);
    border-radius: 999px;
    color: var(--text);
}


/* HERO */

.article-hero {
    padding: 80px 0 55px;
}

.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 48px;
    color: var(--muted);
    font-size: 13px;
}

.breadcrumb a:hover {
    color: var(--green);
}

.article-meta {
    display: flex;
    gap: 10px;
    margin-bottom: 22px;
    color: var(--green);
    font: 500 11px "JetBrains Mono", monospace;
    letter-spacing: .12em;
}

.article-hero h1 {
    max-width: 950px;
    margin: 0;
    font: 800 clamp(48px, 7vw, 92px)/.98 "Manrope", sans-serif;
    letter-spacing: -.055em;
}

.gradient {
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.article-intro {
    max-width: 760px;
    margin: 34px 0 24px;
    color: var(--muted);
    font-size: 20px;
    line-height: 1.65;
}

.article-byline {
    display: flex;
    gap: 10px;
    color: #6f7c77;
    font-size: 13px;
}


/* COVER */

.article-cover {
    padding-bottom: 100px;
}

.article-cover figure {
    margin: 0;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 28px;
    background: var(--surface);
}

.article-cover img {
    width: 100%;
    height: auto;
    display: block;
}


/* ARTICLE */

.article-content {
    padding: 20px 0 100px;
}

.article-layout {
    display: grid;
    grid-template-columns: 220px minmax(0, 720px);
    gap: 90px;
    justify-content: center;
}

.article-sidebar {
    position: sticky;
    top: 115px;
    align-self: start;
}

.toc-title {
    margin-bottom: 18px;
    color: var(--green);
    font: 500 10px "JetBrains Mono", monospace;
    letter-spacing: .12em;
}

.toc {
    display: grid;
    gap: 10px;
}

.toc a {
    color: var(--muted);
    font-size: 13px;
}

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

.article-body {
    font-size: 18px;
}

.article-body section {
    margin-bottom: 100px;
    scroll-margin-top: 120px;
}

.article-body p {
    color: #a5b0ac;
}

.article-body .lead {
    color: var(--text);
    font-size: 24px;
    line-height: 1.6;
}

.article-number {
    margin-bottom: 10px;
    color: var(--green);
    font: 500 12px "JetBrains Mono", monospace;
}

.article-body h2 {
    margin: 0 0 25px;
    font: 700 clamp(32px, 4vw, 48px)/1.1 "Manrope", sans-serif;
    letter-spacing: -.035em;
}

.article-body ul {
    padding-left: 22px;
    color: #a5b0ac;
}

.article-body li {
    margin: 7px 0;
}

.article-body blockquote {
    margin: 40px 0;
    padding: 25px 30px;
    border-left: 2px solid var(--green);
    background: rgba(0, 223, 162, .045);
    color: var(--text);
    font-size: 21px;
}

.highlight-box {
    margin-top: 40px;
    padding: 30px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: var(--surface);
}

.highlight-box .mono {
    display: block;
    margin-bottom: 12px;
    color: var(--green);
    font: 500 10px "JetBrains Mono", monospace;
    letter-spacing: .12em;
}

.highlight-box strong {
    display: block;
    font: 700 22px/1.4 "Manrope", sans-serif;
}


/* CTA */

.article-cta {
    padding: 40px 0 110px;
}

.cta-card {
    position: relative;
    overflow: hidden;
    padding: 70px;
    border: 1px solid var(--line);
    border-radius: 28px;
    background:
        radial-gradient(
            circle at 80% 20%,
            rgba(0, 223, 162, .12),
            transparent 35%
        ),
        var(--surface);
}

.cta-card .mono {
    color: var(--green);
    font: 500 11px "JetBrains Mono", monospace;
    letter-spacing: .12em;
}

.cta-card h2 {
    max-width: 700px;
    margin: 18px 0;
    font: 800 clamp(38px, 5vw, 68px)/1 "Manrope", sans-serif;
    letter-spacing: -.045em;
}

.cta-card p {
    max-width: 560px;
    color: var(--muted);
}

.cta-button {
    display: inline-flex;
    margin-top: 20px;
    padding: 15px 22px;
    border-radius: 999px;
    background: var(--gradient);
    color: #02100c;
    font-weight: 700;
}


/* RELATED */

.related {
    padding: 0 0 110px;
}

.related > .wrap > .mono {
    color: var(--green);
    font: 500 11px "JetBrains Mono", monospace;
    letter-spacing: .12em;
}

.related h2 {
    margin: 15px 0 35px;
    font: 800 46px/1 "Manrope", sans-serif;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
}

.related-card {
    padding: 30px;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: var(--surface);
    transition:
        transform .3s ease,
        border-color .3s ease;
}

.related-card:hover {
    transform: translateY(-5px);
    border-color: rgba(0, 223, 162, .35);
}

.related-card span {
    color: var(--green);
    font: 500 10px "JetBrains Mono", monospace;
}

.related-card h3 {
    margin: 18px 0 28px;
    font: 700 23px/1.25 "Manrope", sans-serif;
}

.related-card strong {
    color: var(--green);
    font-size: 14px;
}


/* FOOTER */

.site-footer {
    padding: 30px 0;
    border-top: 1px solid var(--line);
    color: #68746f;
    font-size: 12px;
}

.site-footer .wrap {
    display: flex;
    justify-content: space-between;
}


/* MOBILE */

@media (max-width: 800px) {

    .wrap {
        width: min(calc(100% - 32px), var(--max));
    }

    .nav {
        height: 70px;
    }

    .nav nav a:not(.nav-cta) {
        display: none;
    }

    .article-hero {
        padding-top: 55px;
    }

    .article-layout {
        grid-template-columns: 1fr;
        gap: 35px;
    }

    .article-sidebar {
        position: static;
    }

    .toc {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
    }

    .toc a {
        padding: 7px 10px;
        border: 1px solid var(--line);
        border-radius: 999px;
    }

    .article-body {
        font-size: 17px;
    }

    .cta-card {
        padding: 40px 25px;
    }

    .related-grid {
        grid-template-columns: 1fr;
    }

    .site-footer .wrap {
        flex-direction: column;
        gap: 8px;
    }
}