:root {
  --bg: #0a0a0b; --panel: #151517; --line: #2a2a2e; --text: #f2f2f3; --muted: #9a9aa2; --accent: #f2f2f3;
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root { --bg: #fafafa; --panel: #ffffff; --line: #e2e2e6; --text: #121214; --muted: #666670; --accent: #121214; color-scheme: light; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", system-ui, sans-serif; }
a { color: inherit; text-underline-offset: 3px; text-decoration-color: var(--line); }
a:hover { text-decoration-color: currentColor; }
.wrap { max-width: 880px; margin: 0 auto; padding: 0 20px; }
header { display: flex; align-items: center; justify-content: space-between; padding: 22px 0; }
header .brand { font-weight: 600; text-decoration: none; letter-spacing: -.01em; }
header nav a { margin-left: 22px; color: var(--muted); text-decoration: none; font-size: 15px; }
header nav a:hover { color: var(--text); }
.hero { padding: 56px 0 40px; display: grid; gap: 40px; grid-template-columns: 1.1fr .9fr; align-items: center; }
h1 { font-size: clamp(36px, 6vw, 58px); line-height: 1.04; letter-spacing: -.03em; margin: 0 0 18px; font-weight: 650; }
.lede { font-size: 20px; color: var(--muted); margin: 0 0 28px; max-width: 30em; }
.buttons { display: flex; flex-wrap: wrap; gap: 12px; }
.btn { display: inline-block; padding: 12px 20px; border-radius: 999px; font-weight: 600; font-size: 16px; text-decoration: none; border: 1px solid var(--line); }
.btn.primary { background: var(--accent); color: var(--bg); border-color: var(--accent); }
.btn.disabled { opacity: .55; pointer-events: none; }
.note { color: var(--muted); font-size: 14px; margin-top: 14px; }
.pad { aspect-ratio: 4/3; border-radius: 28px; background: var(--panel); border: 1px solid var(--line); position: relative; overflow: hidden; }
.pad::before, .pad::after { content: ""; position: absolute; border-radius: 50%; left: 58%; top: 46%; transform: translate(-50%, -50%); border: 1.5px solid var(--text); }
.pad::before { width: 34%; aspect-ratio: 1; opacity: .12; }
.pad::after { width: 22%; aspect-ratio: 1; opacity: .24; }
.pad i { position: absolute; left: 58%; top: 46%; width: 8%; aspect-ratio: 1; border-radius: 50%; background: var(--text); transform: translate(-50%, -50%); }
section { padding: 44px 0; border-top: 1px solid var(--line); }
h2 { font-size: 26px; letter-spacing: -.02em; margin: 0 0 22px; font-weight: 650; }
.grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px 40px; }
.grid h3 { margin: 0 0 6px; font-size: 18px; letter-spacing: -.01em; }
.grid p { margin: 0; color: var(--muted); }
ol.steps { padding-left: 1.2em; margin: 0; } ol.steps li { margin-bottom: 10px; padding-left: 4px; } ol.steps li::marker { color: var(--muted); }
.faq h3 { margin: 26px 0 6px; font-size: 18px; } .faq p { margin: 0; color: var(--muted); }
footer { padding: 32px 0 56px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; display: flex; flex-wrap: wrap; gap: 8px 24px; }
footer a { color: var(--muted); }
article { padding: 24px 0 40px; max-width: 680px; } article h1 { font-size: 40px; } article h2 { font-size: 21px; margin: 34px 0 8px; } article p, article li { color: var(--muted); } article p { margin: 0 0 14px; } article ul { padding-left: 1.2em; }
.mark { background: color-mix(in srgb, var(--text) 10%, transparent); padding: 0 .25em; border-radius: 4px; }
@media (max-width: 720px) { .hero { grid-template-columns: 1fr; padding-top: 28px; } .grid { grid-template-columns: 1fr; } header nav a { margin-left: 16px; } }