:root {
  --bg: #fbf6ee;
  --surface: #ffffff;
  --text: #1f1b16;
  --muted: #5e5750;
  --soft: #8c847a;
  --line: #eee5d8;
  --accent: #ff5b37;
  --table: #2e8a63;
  --rim: #8a5a36;
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); }
body {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
}
a { color: var(--accent); }
header, main, footer { max-width: 760px; margin: 0 auto; padding: 0 20px; }
header { display: flex; align-items: center; justify-content: space-between; padding-top: 22px; padding-bottom: 8px; }
.brand { font-weight: 800; font-size: 24px; letter-spacing: -0.5px; color: var(--text); text-decoration: none; }
.brand span { color: var(--accent); }
nav a { margin-left: 16px; font-size: 15px; color: var(--muted); text-decoration: none; font-weight: 600; }
nav a:hover { color: var(--text); }
main { padding-bottom: 48px; }
h1 { font-size: 34px; line-height: 1.2; letter-spacing: -0.6px; margin: 28px 0 8px; }
h2 { font-size: 22px; margin: 34px 0 6px; }
h3 { font-size: 18px; margin: 22px 0 4px; }
p, li { color: var(--text); }
.lead { font-size: 19px; color: var(--muted); }
.meta { font-size: 14px; color: var(--soft); }
.card { background: var(--surface); border-radius: 20px; padding: 20px 22px; margin: 16px 0; }
.note { background: #ffe7df; border-radius: 14px; padding: 14px 18px; margin: 16px 0; }
table { width: 100%; border-collapse: collapse; margin: 12px 0; background: var(--surface); border-radius: 14px; overflow: hidden; font-size: 15px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: #f6efe4; font-weight: 700; }
.btn { display: inline-block; background: var(--accent); color: #fff; text-decoration: none; font-weight: 700; padding: 14px 26px; border-radius: 999px; margin: 6px 8px 6px 0; }
.btn.secondary { background: var(--surface); color: var(--text); border: 1.5px solid #ddd2c2; }
.table-art { width: 180px; height: 180px; margin: 24px auto 8px; display: block; }
.code { font-size: 40px; font-weight: 800; letter-spacing: 6px; text-align: center; margin: 8px 0; }
.center { text-align: center; }
footer { border-top: 1px solid var(--line); padding-top: 18px; padding-bottom: 40px; font-size: 14px; color: var(--soft); }
footer a { color: var(--muted); margin-right: 14px; }
@media (max-width: 560px) {
  nav { display: none; }
  h1 { font-size: 28px; }
}