:root { --ink: #2b2f6b; --sky-top: #7ec8f5; --sky-bottom: #ddf3ff; --card: rgba(255, 255, 255, 0.92); }
* { box-sizing: border-box; }
body {
  margin: 0; min-height: 100vh; color: var(--ink);
  font-family: ui-rounded, "SF Pro Rounded", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 18px; line-height: 1.55;
  background: linear-gradient(var(--sky-top), var(--sky-bottom)) fixed;
}
main { max-width: 720px; margin: 0 auto; padding: 24px 16px 64px; }
header { text-align: center; padding: 32px 0 8px; }
h1 { font-size: 2.4rem; margin: 12px 0 4px; color: #fff; text-shadow: 0 2px 4px rgba(0, 0, 0, 0.25); text-wrap: balance; }
h2 { font-size: 1.3rem; margin: 0 0 8px; }
p.lead { font-size: 1.2rem; font-weight: 700; text-align: center; margin: 0 0 24px; text-wrap: balance; }
section { background: var(--card); border-radius: 18px; padding: 18px 20px; margin: 16px 0; box-shadow: 0 3px 8px rgba(0, 0, 0, 0.12); }
ul { margin: 0; padding-left: 1.2em; }
li { margin: 4px 0; }
img.icon { width: 128px; height: 128px; border-radius: 28px; box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2); }
nav { text-align: center; margin: 28px 0 0; font-weight: 700; }
nav a { color: var(--ink); margin: 0 10px; }
footer { text-align: center; font-size: 0.9rem; opacity: 0.8; margin-top: 24px; }
.todo { background: #fff3b0; padding: 0 4px; border-radius: 4px; }