:root { --ink: #1d2340; --muted: #5b6283; --accent: #ff6b4a; --paper: #fffaf3; --line: #ece4d6; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 17px/1.6 -apple-system, "Segoe UI", Roboto, sans-serif; }
main { max-width: 760px; margin: 0 auto; padding: 32px 18px 64px; }
h1 { font-size: 30px; line-height: 1.2; margin: 8px 0 4px; }
h2 { font-size: 21px; margin: 32px 0 8px; }
p, li { color: var(--ink); }
.muted { color: var(--muted); font-size: 15px; }
a { color: #2f5bd3; }
nav a { margin-right: 14px; font-weight: 600; text-decoration: none; }
.card { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 18px 20px; margin: 16px 0; }
label { display: block; font-weight: 600; margin: 12px 0 4px; }
input, textarea { width: 100%; font: inherit; padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px; }
button { margin-top: 16px; background: var(--accent); color: #fff; border: 0; border-radius: 12px; padding: 12px 22px; font: inherit; font-weight: 700; cursor: pointer; }
#result { margin-top: 12px; font-weight: 600; }