html {
    background: radial-gradient(1000px 600px at 20% -10%, rgba(16, 185, 129, .25), transparent),
                radial-gradient(900px 500px at 120% 0%, rgba(56, 189, 248, .18), transparent),
                #0b1220;
    background-attachment: fixed;
}

body {
    font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
    color: #e5e7eb;
    margin: 0;
    padding: 0;
    width: 100%;
}

.body_container {
    max-width: 1100px;
    margin: 0 auto;
}

header {
    text-align: center;
    padding: 2.25rem 1rem 1.25rem;
    background: linear-gradient(180deg, rgba(2,6,23,.6), rgba(2,6,23,0));
}

.header__title {
    color: #a7f3d0;
    letter-spacing: .02em;
    text-shadow: 0 1px 0 rgba(0,0,0,.3);
    font-size: clamp(1.75rem, 2.8vw, 2.5rem);
}

.nav {
    position: sticky;
    top: 0;
    z-index: 10;
    backdrop-filter: saturate(140%) blur(8px);
    background: rgba(2, 6, 23, 0.55);
    border-bottom: 1px solid rgba(148, 163, 184, .15);
}

.nav__list {
    display: flex;
    gap: .75rem;
    padding: .6rem 1rem;
    margin: 0 auto;
    max-width: 1100px;
    list-style: none;
}

.nav__link {
    color: #cbd5e1;
    text-decoration: none;
    padding: .35rem .65rem;
    border-radius: .5rem;
    transition: background-color .2s ease, color .2s ease, transform .15s ease;
}

.nav__link:hover {
    color: #0f172a;
    background: #a7f3d0;
}

main {
    margin: 1.25rem 1rem 2rem 1rem;
    padding: 1rem clamp(1rem, 2.5vw, 2rem);
    background: rgba(2, 6, 23, .5);
    border: 1px solid rgba(148, 163, 184, .15);
    border-radius: .75rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, .25);
}

section {
    padding: .25rem 0 1rem;
}

.section__title {
    font-size: 1.35rem;
    font-weight: 700;
    margin: .25rem 0 .25rem;
    padding: .15rem .5rem;
    border-radius: .5rem;
    background: linear-gradient(90deg, rgba(148, 163, 184, .15), rgba(148, 163, 184, 0));
}

.code-block {
    background: #0a0f1c;
    color: #e5e7eb;
    border: 1px solid rgba(148, 163, 184, .15);
    border-radius: .5rem;
    box-shadow: 0 8px 24px rgba(0, 0, 0, .25);
    margin: 1rem 0 1.5rem;
    padding: .75rem .9rem;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    overflow-x: auto;
}

footer {
    text-align: center;
    padding: 1.25rem 1rem 2rem;
    color: #94a3b8;
}

.github-link {
    color: #7dd3fc;
    text-decoration: none;
}

.github-link:hover {
    text-decoration: underline;
}

main a {
    color: #7dd3fc;
    text-decoration: underline;
}

main a:hover {
    color: #a7f3d0;
}