* { box-sizing: border-box; }
body { margin: 0; font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif; color: #1a1a1a; background: #fff; }
header, main, footer { max-width: 760px; margin: 0 auto; padding: 0 20px; }
header { display: flex; justify-content: space-between; align-items: center; padding-top: 24px; padding-bottom: 24px; }
header .logo { font-weight: 700; font-size: 20px; text-decoration: none; color: inherit; }
nav a { margin-left: 20px; color: #333; }
h1 { font-size: 36px; line-height: 1.15; margin: 32px 0 16px; }
h2 { font-size: 22px; margin: 40px 0 12px; }
.cta { display: inline-block; background: #1a1a1a; color: #fff; padding: 10px 18px; border-radius: 6px; text-decoration: none; }
.plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin: 24px 0; }
.plan { border: 1px solid #ddd; border-radius: 8px; padding: 20px; }
.plan .price { font-size: 28px; font-weight: 700; }
.plan ul { padding-left: 18px; margin: 12px 0 0; }
table { border-collapse: collapse; width: 100%; margin: 16px 0; }
th, td { text-align: left; padding: 8px 12px 8px 0; border-bottom: 1px solid #eee; }
details { margin: 8px 0; }
form label { display: block; margin: 16px 0 4px; font-weight: 600; }
form input, form select, form textarea { width: 100%; padding: 8px; font: inherit; border: 1px solid #ccc; border-radius: 6px; }
form button { margin-top: 20px; padding: 10px 18px; font: inherit; background: #1a1a1a; color: #fff; border: 0; border-radius: 6px; }
#sent { display: none; margin-top: 16px; padding: 12px; background: #f3f3f3; border-radius: 6px; }
footer { margin-top: 64px; padding-top: 16px; padding-bottom: 32px; border-top: 1px solid #eee; font-size: 14px; color: #666; }
.lab { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin: 24px 0; }
.lab button { padding: 10px 16px; font: inherit; border: 1px solid #1a1a1a; background: #fff; border-radius: 6px; cursor: pointer; }
.lab button:disabled { opacity: 0.5; cursor: not-allowed; }
.card { border: 1px solid #ddd; border-radius: 8px; padding: 12px 16px; cursor: pointer; }