:root {
    --ink: #122332;
    --muted: #647689;
    --paper: #f4f7fb;
    --card: #ffffff;
    --accent: #266dd3;
    --accent-soft: #dbe8ff;
    --border: #d7e1f0;
    --radius: 18px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", Tahoma, sans-serif;
    color: var(--ink);
    background:
        linear-gradient(135deg, rgba(38, 109, 211, 0.10), transparent 30%),
        var(--paper);
}

.container {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 24px;
}

.hero {
    padding: 88px 0 60px;
}

.hero-shell {
    border-radius: 30px;
    background: white;
    border: 1px solid var(--border);
    padding: 44px;
    box-shadow: 0 18px 44px rgba(18, 35, 50, 0.10);
}

.eyebrow {
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 0.16em;
    color: var(--accent);
    margin-bottom: 14px;
}

h1 {
    margin: 0 0 16px;
    font-size: clamp(2.8rem, 5vw, 4.5rem);
    line-height: 0.95;
}

h2 {
    margin: 0 0 18px;
    font-size: 1.6rem;
}

.tagline {
    max-width: 700px;
    color: var(--muted);
    font-size: 1.15rem;
    margin-bottom: 24px;
}

.actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 12px 20px;
    border-radius: 999px;
    font-weight: 700;
    text-decoration: none;
}

.btn-primary {
    color: white;
    background: var(--accent);
}

.btn-secondary {
    color: var(--ink);
    background: var(--accent-soft);
}

main section {
    padding: 16px 0 54px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.card {
    background: var(--card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: 24px;
}

.card p,
.bullet-list li,
.site-footer {
    color: var(--muted);
}

.bullet-list {
    margin: 12px 0 0;
    padding-left: 18px;
}

.code-block {
    background: #10202d;
    color: #eef4fb;
    border-radius: var(--radius);
    padding: 20px;
    overflow-x: auto;
}

.code-block code {
    white-space: pre;
    line-height: 1.7;
    font-family: Consolas, "Courier New", monospace;
}

.site-footer {
    text-align: center;
    padding: 20px 0 56px;
}

@media (max-width: 720px) {
    .hero-shell {
        padding: 28px 22px;
    }
}