:root { color-scheme: light; --ink: #16141c; --quiet: #5c5866; --bg: #f6f6f8; --card: rgba(255,255,255,0.72); }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif; }
main { max-width: 680px; margin: 0 auto; padding: 48px 16px 64px; }
.band { height: 4px; border-radius: 2px; background: linear-gradient(90deg,#ff6b8c,#ffb36b,#f5f27a,#7df0a8,#6bd6ff,#8c7aff); margin-bottom: 32px; }
h1 { font-size: 34px; line-height: 1.15; margin: 0 0 6px; font-weight: 600; }
.sub { color: var(--quiet); margin: 0 0 28px; }
.card { background: var(--card); border: 1px solid rgba(0,0,0,0.06); border-radius: 22px; padding: 22px 24px; margin-bottom: 16px; }
h2 { font-size: 19px; margin: 0 0 6px; font-weight: 600; }
p { margin: 0 0 10px; } p:last-child { margin-bottom: 0; }
a { color: #4b3bd1; }
footer { color: var(--quiet); font-size: 14px; margin-top: 28px; }
nav a { margin-right: 16px; }