:root { --bg: #0A1113; --panel: #131D21; --ink: #F3EFE4; --soft: #B4BFBB; --gold: #D8B25A; --good: #4CC28A; --bad: #D45656; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
main { max-width: 720px; margin: 0 auto; padding: 40px 16px 60px; }
h1 { font-family: Georgia, "Times New Roman", serif; font-size: 44px; margin: 8px 0 4px; }
h2 { font-family: Georgia, "Times New Roman", serif; font-size: 24px; margin: 28px 0 8px; color: var(--gold); }
p, li { color: var(--soft); }
a { color: var(--gold); }
.lead { font-size: 19px; color: var(--ink); }
.icon { border-radius: 26px; }
.small { font-size: 14px; color: #7D8B87; }
nav { margin: 28px 0 8px; }
code, pre, textarea, input { font-family: ui-monospace, Menlo, Consolas, monospace; }
pre { background: var(--panel); padding: 14px; border-radius: 12px; overflow-x: auto; font-size: 13px; color: var(--ink); }
label { display: block; margin: 14px 0 6px; color: var(--ink); font-weight: 600; }
input, textarea { width: 100%; background: var(--panel); color: var(--ink); border: 1px solid #2B3A40; border-radius: 10px; padding: 10px; font-size: 14px; }
button { margin-top: 14px; background: var(--gold); color: #1B1408; border: 0; border-radius: 12px; padding: 12px 20px; font-size: 16px; font-weight: 700; cursor: pointer; }
.out { margin-top: 16px; padding: 14px; border-radius: 12px; background: var(--panel); white-space: pre-wrap; word-break: break-word; font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 14px; }
.ok { border: 1px solid var(--good); }
.no { border: 1px solid var(--bad); }