:root {
    --dev-bg: #05070a;
    --dev-surface: #0c1118;
    --dev-surface-alt: #111924;
    --dev-line: #1d2938;
    --dev-text: #f4f7fb;
    --dev-muted: #95a2b3;
    --dev-blue: #4ea1ff;
    --dev-green: #42d392;
    --dev-blue-soft: rgba(78, 161, 255, 0.10);
    --dev-green-soft: rgba(66, 211, 146, 0.10);
    --dev-max: 1180px;
    --dev-radius: 14px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;

    font-family:
        Inter,
        ui-sans-serif,
        system-ui,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;

    background:
        radial-gradient(
            circle at 75% -10%,
            rgba(78, 161, 255, 0.15),
            transparent 30rem
        ),
        var(--dev-bg);

    color: var(--dev-text);
    line-height: 1.6;
}

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

a:hover,
a:focus-visible {
    color: var(--dev-blue);
}

.dev-shell {
    width: min(92%, var(--dev-max));
    margin-inline: auto;
}

.dev-header {
    position: sticky;
    top: 0;
    z-index: 100;

    background: rgba(5, 7, 10, 0.90);
    border-bottom: 1px solid rgba(255,255,255,0.06);

    backdrop-filter: blur(18px);
}

.dev-nav {
    min-height: 72px;

    display: flex;
    align-items: center;
    justify-content: space-between;

    gap: 2rem;
}

.dev-brand {
    font-size: 1.05rem;
    font-weight: 750;
    letter-spacing: -0.03em;
}

.dev-brand span {
    color: var(--dev-blue);
}

.dev-nav-links {
    display: flex;
    align-items: center;
    flex-wrap: wrap;

    gap: 1.2rem;

    color: var(--dev-muted);
    font-size: 0.9rem;
}

.dev-nav-links a:hover,
.dev-nav-links a[aria-current="page"] {
    color: var(--dev-text);
}

.dev-hero {
    min-height: 560px;

    display: flex;
    flex-direction: column;
    justify-content: center;

    padding: 5rem 0;
}

.dev-eyebrow,
.dev-label {
    color: var(--dev-blue);

    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.13em;

    text-transform: uppercase;
}

.dev-hero h1 {
    max-width: 900px;

    margin: 0.7rem 0 1.5rem;

    font-size: clamp(3rem, 7vw, 6.5rem);
    line-height: 0.95;
    letter-spacing: -0.055em;
}

.dev-lead {
    max-width: 780px;

    color: var(--dev-muted);
    font-size: 1.08rem;
}

.dev-actions {
    display: flex;
    flex-wrap: wrap;

    gap: 0.75rem;
    margin-top: 2rem;
}

.dev-button {
    min-height: 44px;

    display: inline-flex;
    align-items: center;
    justify-content: center;

    padding: 0.75rem 1rem;

    border: 1px solid var(--dev-blue);
    border-radius: 8px;

    background: var(--dev-blue);
    color: #001326;

    font-weight: 700;
}

.dev-button-secondary {
    background: transparent;
    color: var(--dev-text);
    border-color: var(--dev-line);
}

.dev-section {
    padding: 2rem 0 5rem;
}

.dev-section h2 {
    margin: 0.6rem 0 1.2rem;

    font-size: clamp(2rem, 5vw, 3.6rem);
    line-height: 1.05;
    letter-spacing: -0.04em;
}

.dev-grid {
    display: grid;
    grid-template-columns:
        repeat(3, minmax(0, 1fr));

    gap: 1rem;
}

.dev-card {
    min-width: 0;
    padding: 1.5rem;

    background:
        linear-gradient(
            145deg,
            var(--dev-surface),
            var(--dev-surface-alt)
        );

    border: 1px solid var(--dev-line);
    border-radius: var(--dev-radius);

    transition:
        transform 0.2s ease,
        border-color 0.2s ease;
}

.dev-card:hover {
    transform: translateY(-3px);
    border-color: #395979;
}

.dev-card h3 {
    margin: 1rem 0 0.6rem;
}

.dev-card p {
    color: var(--dev-muted);
}

.dev-status {
    display: inline-flex;
    align-items: center;

    padding: 0.32rem 0.65rem;

    color: var(--dev-green);
    background: var(--dev-green-soft);

    border: 1px solid rgba(66,211,146,0.25);
    border-radius: 999px;

    font-size: 0.76rem;
    font-weight: 700;
}

.dev-panel {
    padding: 1.5rem;

    background: var(--dev-blue-soft);
    border: 1px solid var(--dev-line);
    border-radius: var(--dev-radius);
}

.dev-list {
    padding-left: 1.2rem;
}

.dev-list li + li {
    margin-top: 0.5rem;
}

.dev-code {
    overflow-x: auto;

    padding: 1rem;

    background: #030609;
    color: #cce5ff;

    border: 1px solid var(--dev-line);
    border-radius: 10px;

    font-family:
        "Cascadia Code",
        Consolas,
        monospace;

    font-size: 0.88rem;
}

.dev-footer {
    margin-top: 4rem;
    padding: 2rem 0;

    border-top: 1px solid var(--dev-line);

    color: var(--dev-muted);
}

.dev-hidden {
    display: none !important;
}

@media (max-width: 900px) {
    .dev-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 640px) {
    .dev-nav {
        align-items: flex-start;
        flex-direction: column;

        padding: 1rem 0;
    }

    .dev-nav-links {
        align-items: flex-start;
        flex-direction: column;
    }

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

    .dev-hero {
        min-height: auto;
        padding-top: 4rem;
    }
}