:root {
    --bg: #0d0d0d;
    --surface: #171717;
    --surface-alt: #1f1f1f;
    --ink: #f4f4ee;
    --muted: #c8c4b8;
    --line: #f4f4ee;
    --accent-lime: #d7ff3f;
    --accent-cyan: #2de2ff;
    --accent-red: #ff4d6d;
    --shadow: #020202;
    --heading: "Archivo Black", "Impact", sans-serif;
    --sans: "Space Grotesk", "Avenir Next", sans-serif;
    --mono: "IBM Plex Mono", "Menlo", "Monaco", monospace;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
}

body {
    color: var(--ink);
    font-family: var(--sans);
    line-height: 1.65;
    background:
        linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px),
        linear-gradient(0deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px),
        linear-gradient(160deg, #0d0d0d 0%, #111 65%, #0d0d0d 100%);
    background-size:
        36px 36px,
        36px 36px,
        100% 100%;
}

.atmo {
    position: fixed;
    pointer-events: none;
    z-index: -1;
    opacity: 0.85;
}

.atmo-a {
    width: 180px;
    height: 180px;
    top: 44px;
    left: 6vw;
    background: var(--accent-red);
    border: 3px solid var(--line);
    transform: rotate(8deg);
}

.atmo-b {
    width: 160px;
    height: 160px;
    right: 5vw;
    bottom: 70px;
    background: var(--accent-cyan);
    border: 3px solid var(--line);
    transform: rotate(-9deg);
}

.shell {
    width: min(1020px, 92vw);
    margin: 0 auto;
}

.site-header {
    margin-top: 22px;
    padding: 14px;
    border: 3px solid var(--line);
    background: var(--surface);
    box-shadow: 8px 8px 0 var(--shadow);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.9rem;
    animation: slam 300ms ease-out both;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    color: var(--ink);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 700;
}

.brand-mark {
    width: 34px;
    height: 34px;
    display: inline-grid;
    place-items: center;
    font-family: var(--mono);
    font-weight: 500;
    color: #090909;
    border: 3px solid var(--line);
    background: var(--accent-lime);
    transform: translateY(-1px);
}

.top-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
}

.top-nav a {
    color: var(--ink);
    background: #101010;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-size: 0.8rem;
    font-weight: 700;
    border: 2px solid var(--line);
    padding: 0.38rem 0.62rem;
    box-shadow: 3px 3px 0 var(--shadow);
    transition:
        transform 140ms ease,
        box-shadow 140ms ease,
        background-color 140ms ease;
}

.top-nav a:hover,
.top-nav a.is-active {
    background: var(--accent-cyan);
    color: #101010;
    transform: translate(-2px, -2px);
    box-shadow: 5px 5px 0 var(--shadow);
}

.site-main {
    padding: 22px 0 16px;
}

.hero {
    border: 3px solid var(--line);
    background: linear-gradient(132deg, #111 0%, #1e1e1e 100%);
    box-shadow: 10px 10px 0 var(--shadow);
    padding: clamp(1rem, 2.8vw, 2rem);
    margin: 0 0 20px;
    position: relative;
    animation: slam 420ms ease-out both;
}

.hero::after {
    content: "LIVE SPEC";
    position: absolute;
    top: -14px;
    right: 16px;
    border: 2px solid var(--line);
    background: var(--accent-lime);
    color: #050505;
    font-family: var(--mono);
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    padding: 0.14rem 0.46rem;
}

.eyebrow {
    display: inline-block;
    margin: 0 0 0.4rem;
    font-family: var(--mono);
    color: #0a0a0a;
    background: var(--accent-red);
    border: 2px solid var(--line);
    padding: 0.1rem 0.45rem;
    letter-spacing: 0.08em;
    font-size: 0.75rem;
}

.hero h1 {
    margin: 0;
    font-family: var(--heading);
    text-transform: uppercase;
    letter-spacing: 0.01em;
    line-height: 1.06;
    font-size: clamp(1.95rem, 5.8vw, 4.25rem);
}

.hero-copy {
    margin: 0.8rem 0 0;
    max-width: 58ch;
    color: var(--muted);
}

.content-card {
    border: 3px solid var(--line);
    background: var(--surface-alt);
    box-shadow: 10px 10px 0 var(--shadow);
    padding: clamp(1rem, 2.8vw, 2rem);
    animation: slam 520ms ease-out both;
}

.content-card h1,
.content-card h2,
.content-card h3 {
    margin-bottom: 0.48em;
    color: var(--ink);
    font-family: var(--heading);
    line-height: 1.14;
    text-transform: uppercase;
    letter-spacing: 0.01em;
}

.content-card h1 {
    margin-top: 0;
    font-size: clamp(1.55rem, 3.8vw, 2.8rem);
}

.content-card h2 {
    margin-top: 1.2em;
    font-size: clamp(1.2rem, 3vw, 1.8rem);
}

.content-card p,
.content-card li {
    color: var(--muted);
}

.content-card ul,
.content-card ol {
    padding-left: 1.15rem;
}

.content-card li + li {
    margin-top: 0.32rem;
}

.content-card a {
    color: var(--ink);
    text-decoration: none;
    font-weight: 600;
    background: linear-gradient(
            to top,
            var(--accent-lime) 0.5em,
            transparent 0.5em
        )
        0 100% / 100% 0% no-repeat;
    transition: background-size 140ms ease;
}

.content-card a:hover {
    background-size: 100% 100%;
    color: #0c0c0c;
}

.content-card code {
    font-family: var(--mono);
    font-size: 0.9em;
    color: var(--accent-cyan);
    background: #0f0f0f;
    border: 2px solid #6e6e6e;
    padding: 0.08rem 0.34rem;
}

.content-card pre {
    margin: 1rem 0;
    overflow-x: auto;
    border: 3px solid var(--line);
    background: #090909;
    box-shadow: 7px 7px 0 var(--shadow);
    padding: 0.78rem 0.95rem;
}

.content-card pre code {
    border: 0;
    padding: 0;
    color: #f0f0e8;
}

.soul-demo {
    margin: 1.4rem auto;
    max-width: 580px;
    border: 3px solid var(--line);
    background: #090909;
    box-shadow: 7px 7px 0 var(--shadow);
    padding: 6px;
    position: relative;
}

.soul-demo::after {
    content: "LIVE DEMO";
    position: absolute;
    top: -12px;
    right: 14px;
    border: 2px solid var(--line);
    background: var(--accent-cyan);
    color: #050505;
    font-family: var(--mono);
    font-size: 0.68rem;
    letter-spacing: 0.08em;
    padding: 0.1rem 0.4rem;
}

.soul-demo img {
    display: block;
    width: 100%;
    height: auto;
    border: 2px solid #333;
}

.soul-demo-caption {
    margin: 0;
    padding: 0.45rem 0.6rem;
    font-family: var(--mono);
    font-size: 0.74rem;
    color: var(--muted);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    background: #0d0d0d;
    border-top: 2px solid #333;
}

.site-footer {
    padding: 14px 0 38px;
}

.site-footer p {
    margin: 0;
    border: 2px solid var(--line);
    background: #121212;
    color: var(--muted);
    font-family: var(--mono);
    text-transform: uppercase;
    font-size: 0.74rem;
    letter-spacing: 0.08em;
    padding: 0.4rem 0.58rem;
    display: inline-block;
}

@keyframes slam {
    from {
        opacity: 0;
        transform: translateY(11px) scale(0.99);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@media (max-width: 780px) {
    .atmo-a,
    .atmo-b {
        width: 108px;
        height: 108px;
        border-width: 2px;
    }

    .site-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .top-nav a {
        font-size: 0.74rem;
    }

    .hero::after {
        right: 10px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation: none !important;
        transition: none !important;
    }
}