:root {
--bg: #0b0e11;
--panel: #12161b;
--ink: #e9eef5;
--muted: #9fb0c0;
--brand: #4cc9f0;
--brand-ink: #061018;
--ring: rgba(76, 201, 240, 0.35);
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
margin: 0; font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
background: linear-gradient(180deg, #0b0e11, #0b0e11 30%, #0e1319 100%);
color: var(--ink);
}
.container { width: min(1100px, 92%); margin-inline: auto; }
.flex { display: flex; gap: 1rem; }
.between { justify-content: space-between; }
.center { align-items: center; }
.grid2 { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 1.5rem; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
@media (max-width: 900px){ .grid2, .grid3 { grid-template-columns: 1fr; } }


.site-header { position: sticky; top: 0; z-index: 20; background: rgba(11,14,17,0.7); backdrop-filter: blur(6px); border-bottom: 1px solid #1c232b; }
.brand { font-weight: 700; letter-spacing: 0.2px; color: var(--ink); text-decoration: none; }
.nav a { color: var(--muted); text-decoration: none; margin-left: 1rem; padding: .6rem .8rem; border-radius: 10px; }
.nav a:hover { color: var(--ink); background: #141b22; }
.nav a.active { color: var(--brand); background: #0f151c; box-shadow: 0 0 0 1px #163243 inset; }
.nav.small a { margin-left: .5rem; padding: .4rem .6rem; }


.hero { padding: 3.5rem 0 2rem; border-bottom: 1px solid #121a22; }
.hero.small { padding: 2.25rem 0 1rem; }
.hero h1 { margin: 0 0 .6rem; font-size: clamp(1.8rem, 2.2vw + 1rem, 2.6rem); }
.lead { color: var(--muted); font-size: 1.05rem; line-height: 1.6; }
.cta-row { margin-top: 1rem; display: flex; gap: .8rem; }
.btn { display: inline-block; padding: .8rem 1rem; border-radius: 12px; text-decoration: none; font-weight: 600; border: 1px solid #163243; background: #0f151c; color: var(--ink); }
.btn.primary { background: var(--brand); color: var(--brand-ink); border-color: transparent; box-shadow: 0 0 0 4px var(--ring); }
.btn.primary:hover { filter: brightness(1.05); }
.btn.ghost:hover { background: #131b23; }


.section { padding: 2rem 0; }
.section.alt { background: linear-gradient(180deg, #0b0e11, #0b0e11 10%, #0f141a 100%); border-top: 1px solid #121a22; border-bottom: 1px solid #121a22; }
.card { background: var(--panel); border: 1px solid #1b2330; border-radius: 16px; padding: 1.1rem; box-shadow: 0 8px 30px rgba(0,0,0,.25); }
.hero-card { align-self: start; }
.checklist { list-style: none; padding: 0; margin: 0; }
.checklist li { position: relative; padding-left: 1.6rem; margin: .6rem 0; }
.checklist li::before { content: "✔"; position: absolute; left: 0; color: var(--brand); }
.pill-grid { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: .6rem; }
.pill { background: #0f151c; border: 1px solid #163243; padding: .4rem .7rem; border-radius: 999px; font-size: .9rem; color: var(--muted); }
.site-footer { padding: 1rem 0; border-top: 1px solid #121a22; color: var(--muted); }
.codeblock { background: #0a0f14; color: #d3e4f5; padding: .9rem; border-radius: 12px; border: 1px solid #13202b; overflow: auto; }