:root {
  --bg: #ffffff; --ink: #18212b; --muted: #5a6573; --line: #d6dce3; --accent: #2b5f8e; --soft: #eef3f8;
  --bad: #a3312b;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #14191f; --ink: #e3e8ee; --muted: #97a3b2; --line: #2c3541; --accent: #84b3df; --soft: #1d2732;
    --bad: #e58a83;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #14191f; --ink: #e3e8ee; --muted: #97a3b2; --line: #2c3541; --accent: #84b3df; --soft: #1d2732;
  --bad: #e58a83;
  color-scheme: dark;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", sans-serif;
}
main { max-width: 760px; margin: 0 auto; padding: 40px 16px 64px; }
h1 { font: 600 34px/1.15 Georgia, "Times New Roman", serif; margin: 0 0 6px; letter-spacing: -0.01em; }
h2 { font-size: 13px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin: 36px 0 10px; }
.lede { font-size: 19px; color: var(--muted); margin: 0 0 24px; }
a { color: var(--accent); }
code, pre { font: 14px/1.5 ui-monospace, Menlo, Consolas, monospace; }
pre { background: var(--soft); padding: 12px 14px; border-radius: 8px; overflow-x: auto; margin: 0; }
.links { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 12px; padding: 0; list-style: none; }
.links a { display: block; height: 100%; padding: 14px 16px; border: 1px solid var(--line); border-radius: 10px; text-decoration: none; color: var(--ink); }
.links a:hover, .links a:focus-visible { border-color: var(--accent); }
.links b { display: block; color: var(--accent); margin-bottom: 2px; }
.links span { color: var(--muted); font-size: 14px; }
.status { border-left: 3px solid var(--accent); padding: 2px 12px; color: var(--muted); }
footer { margin-top: 48px; color: var(--muted); font-size: 13px; }
label { display: block; font-weight: 600; margin: 16px 0 6px; }
textarea, input[type=text] {
  width: 100%; font: inherit; color: inherit; background: var(--bg);
  border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px;
}
button {
  font: inherit; border: 1px solid var(--accent); background: var(--accent); color: var(--bg);
  border-radius: 8px; padding: 7px 16px; cursor: pointer; margin-top: 14px;
}
button:disabled { opacity: .5; cursor: default; }
.msg { margin-top: 14px; }
.msg.bad { color: var(--bad); }