:root { color-scheme: light dark; --fg: #1d1d1f; --muted: #6e6e73; --bg: #fbfbfd; --card: #fff; --line: #e5e5ea; --accent: #0a66d8; }
@media (prefers-color-scheme: dark) { :root { --fg: #f5f5f7; --muted: #a1a1a6; --bg: #111113; --card: #1c1c1e; --line: #2c2c2e; --accent: #4c9aff; } }
* { box-sizing: border-box; }
body { margin: 0; font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", sans-serif; color: var(--fg); background: var(--bg); }
main { max-width: 760px; margin: 0 auto; padding: 48px 24px 72px; }
header.site { display: flex; align-items: center; gap: 14px; margin-bottom: 40px; }
header.site img { width: 44px; height: 44px; }
header.site a { color: inherit; text-decoration: none; font-weight: 600; font-size: 19px; }
nav { margin-left: auto; display: flex; gap: 18px; font-size: 15px; }
nav a { color: var(--muted); text-decoration: none; } nav a:hover { color: var(--fg); }
.hero { text-align: center; padding: 24px 0 8px; }
.hero img { width: 128px; height: 128px; }
h1 { font-size: 44px; line-height: 1.1; margin: 18px 0 12px; letter-spacing: -0.02em; }
h2 { font-size: 24px; margin: 40px 0 10px; }
.lead { font-size: 21px; color: var(--muted); max-width: 600px; margin: 0 auto 28px; }
.btn { display: inline-block; background: var(--accent); color: #fff; padding: 12px 26px; border-radius: 980px; text-decoration: none; font-weight: 600; }
.btn.disabled { background: var(--line); color: var(--muted); pointer-events: none; }
.note { font-size: 14px; color: var(--muted); margin-top: 12px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin-top: 40px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 18px 20px; }
.card h3 { margin: 0 0 6px; font-size: 17px; } .card p { margin: 0; color: var(--muted); font-size: 15px; }
ol li, ul li { margin: 6px 0; }
footer { border-top: 1px solid var(--line); margin-top: 56px; padding-top: 20px; font-size: 14px; color: var(--muted); }
footer a { color: var(--muted); }
a { color: var(--accent); }