:root {
    color-scheme: dark;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: #070b18;
    color: #f8fafc;
}

* {
    box-sizing: border-box;
}

body {
    min-height: 100vh;
    margin: 0;
    padding: 32px 20px;
    background:
        radial-gradient(circle at 15% 15%, rgba(124, 58, 237, 0.34), transparent 35%),
        radial-gradient(circle at 85% 20%, rgba(8, 145, 178, 0.30), transparent 32%),
        #070b18;
}

.shell {
    width: min(920px, 100%);
    margin: 0 auto;
}

.hero {
    padding: 56px 28px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 28px;
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.88), rgba(8, 145, 178, 0.82));
    box-shadow: 0 24px 80px rgba(8, 15, 40, 0.48);
}

.eyebrow {
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: 0.2em;
    opacity: 0.8;
}

h1 {
    margin: 14px 0 8px;
    font-size: clamp(2.2rem, 7vw, 4.7rem);
    line-height: 1;
}

.hero p {
    margin: 0;
    font-size: clamp(1rem, 2.5vw, 1.35rem);
    opacity: 0.9;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    gap: 16px;
    margin: 24px 0;
}

.features article,
.card {
    border: 1px solid rgba(255, 255, 255, 0.10);
    border-radius: 20px;
    background: rgba(15, 23, 42, 0.78);
    backdrop-filter: blur(12px);
}

.features article {
    padding: 22px;
}

.features article > span {
    font-size: 1.7rem;
}

h2 {
    margin: 12px 0 8px;
    font-size: 1.08rem;
}

.features p,
.card li {
    color: #b9c4d8;
    line-height: 1.55;
}

.features p {
    margin: 0;
}

.card {
    padding: 26px;
}

.card ol {
    padding-left: 22px;
}

code {
    display: inline-block;
    margin-top: 8px;
    padding: 11px 14px;
    border-radius: 10px;
    background: #020617;
    color: #67e8f9;
}

footer {
    padding: 24px 8px 4px;
    color: #77839a;
    text-align: center;
    font-size: 0.86rem;
}