:root { --brand: #1B1BCB; --text: #14142B; --muted: #55556B; --line: #E4E4EE; }
* { box-sizing: border-box; }
body { margin: 0; font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; color: var(--text); background: #F6F6FB; line-height: 1.65; }
header { background: var(--brand); padding: 18px 24px; }
header .in { max-width: 840px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
header img { height: 26px; display: block; }
header nav { display: flex; gap: 18px; flex-wrap: wrap; font-size: 14px; }
header nav a { color: #fff; text-decoration: none; opacity: .8; } header nav a:hover, header nav a.on { opacity: 1; text-decoration: underline; text-underline-offset: 4px; }
main { max-width: 800px; margin: 28px auto 40px; padding: 36px 40px; background: #fff; border: 1px solid var(--line); border-radius: 20px; }
h1 { font-size: 34px; line-height: 1.15; margin: 0 0 18px; letter-spacing: -.02em; }
h2 { font-size: 21px; margin: 34px 0 10px; color: var(--brand); letter-spacing: -.01em; }
p, li { font-size: 16px; color: var(--text); } p { margin: 0 0 14px; } ul { margin: 0 0 14px; padding-left: 22px; } li { margin-bottom: 6px; }
a { color: var(--brand); }
footer { text-align: center; color: var(--muted); font-size: 13px; padding: 0 20px 40px; }
footer a { color: var(--muted); margin: 0 8px; }
.docs { list-style: none; padding: 0; } .docs li { margin: 0 0 10px; } .docs a { display: block; padding: 16px 18px; border: 1px solid var(--line); border-radius: 14px; text-decoration: none; font-weight: 700; } .docs a:hover { border-color: var(--brand); }
@media (max-width: 640px) { main { margin: 0; border-radius: 0; border-left: 0; border-right: 0; padding: 26px 20px; } h1 { font-size: 28px; } }