:root { color-scheme: dark; --bg: #0b1220; --text: #f8fafc; --muted: #a8b4c8; --line: #29364c; --accent: #7dd3fc; }
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; -webkit-font-smoothing: antialiased; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: "Helvetica Neue", Arial, sans-serif; line-height: 1.6; }
a { color: var(--accent); text-underline-offset: 0.2em; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; }
header, main, footer { width: min(68rem, 100% - 3rem); margin-inline: auto; }
header { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1.25rem; padding-block: 1.5rem; border-bottom: 1px solid var(--line); }
.brand { color: var(--text); text-decoration: none; font-weight: 700; font-size: 1.2rem; }
.brand span { display: block; font-size: 0.8rem; font-weight: 400; color: var(--muted); }
nav { display: flex; flex-wrap: wrap; gap: 1.5rem; font-size: 0.9rem; }
nav a { padding-block: 0.5rem; }
main { padding-block: clamp(2.5rem, 7vw, 6rem) 3rem; }
.eyebrow { color: var(--accent); font-size: 0.8rem; letter-spacing: 0.08em; text-transform: uppercase; }
h1 { font-size: clamp(2.7rem, 7vw, 5rem); line-height: 1.06; letter-spacing: -0.045em; font-weight: 600; margin-block: 1.25rem 1.75rem; }
.intro { font-size: clamp(1.1rem, 2.7vw, 1.35rem); max-width: 43rem; }
.audience { color: var(--muted); max-width: 43rem; font-size: 1rem; margin-bottom: 1.7rem; }
.button { display: inline-block; border: 1px solid var(--accent); background: var(--accent); color: var(--bg); border-radius: 0.5rem; padding: 0.8rem 1.1rem; text-decoration: none; font-weight: 700; }
.button:hover { background: #bae6fd; }
.contact-note { max-width: 37rem; font-size: 0.85rem; color: var(--muted); margin-top: 1rem; }
section { margin-top: 4rem; }
h2 { font-size: clamp(1.2rem, 3vw, 1.5rem); font-weight: 600; }
.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2rem; margin-top: 1.75rem; }
.steps article { border-top: 1px solid var(--line); padding-top: 1rem; }
.number { color: var(--accent); font-size: 0.8rem; }
h3 { font-size: 1.1rem; margin-block: 0.6rem; }
.steps p, .boundary p { color: var(--muted); font-size: 0.95rem; }
.boundary { border: 1px solid var(--line); border-radius: 0.7rem; padding: 1rem 1.5rem; margin-top: 3rem; }
.boundary h2 { font-size: 1.1rem; }
footer { display: flex; flex-wrap: wrap; gap: 0.5rem 2rem; justify-content: space-between; align-items: center; border-top: 1px solid var(--line); padding-block: 1rem 2rem; color: var(--muted); font-size: 0.85rem; }
.skip-link { position: absolute; left: 1rem; top: -5rem; background: var(--bg); padding: 0.7rem; z-index: 1; }
.skip-link:focus { top: 0.5rem; }
@media (max-width: 42rem) { .steps { grid-template-columns: 1fr; gap: 1rem; } header, main, footer { width: calc(100% - 2rem); } }