:root {
  color-scheme: light;
  --ink: #111827;
  --muted: #667085;
  --paper: #f7f8fa;
  --panel: #ffffff;
  --line: #d7dce2;
  --red: #b42318;
  --blue: #1849a9;
  --code: #111827;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(90deg, rgb(17 24 39 / 0.05) 1px, transparent 1px),
    linear-gradient(rgb(17 24 39 / 0.05) 1px, transparent 1px),
    var(--paper);
  background-size: 28px 28px;
  font-family: ui-sans-serif, "PingFang SC", "Microsoft YaHei", sans-serif;
}

.shell {
  width: min(1180px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 42px 0 60px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--red);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 18px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(42px, 7vw, 86px);
  line-height: 0.9;
}

.hero p,
.broken-card p {
  max-width: 760px;
  color: var(--muted);
  line-height: 1.75;
}

.prompt-board,
.target {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 24px;
}

.target {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

article,
.broken-card {
  border: 1px solid var(--line);
  background: rgb(255 255 255 / 0.92);
  box-shadow: 0 18px 58px rgb(17 24 39 / 0.12);
  padding: 20px;
}

pre {
  overflow: auto;
  margin: 0;
  border: 1px solid #2f3947;
  background: var(--code);
  color: #e7edf4;
  padding: 16px;
  white-space: pre-wrap;
  line-height: 1.55;
}

.broken-card span {
  display: inline-flex;
  margin-bottom: 12px;
  border: 1px solid rgb(180 35 24 / 0.35);
  padding: 4px 9px;
  color: var(--red);
  font-size: 12px;
  font-weight: 900;
}

.broken-card img {
  display: block;
  width: 100%;
  min-height: 150px;
  border: 1px dashed var(--red);
  background: #fff5f4;
}

.overflow {
  overflow: hidden;
}

.overflow p {
  width: max-content;
  color: var(--blue);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

button {
  min-height: 42px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: white;
  cursor: pointer;
  padding: 10px 14px;
  font: inherit;
  font-weight: 900;
}

@media (max-width: 900px) {
  .prompt-board,
  .target {
    grid-template-columns: 1fr;
  }
}