:root {
  --paper: #ffffff;
  --text: #1c1a17;
  --muted: #6f675c;
  --line: rgba(28, 26, 23, 0.08);
  --accent: #c9852c;
  --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(1200px 480px at 10% -10%, rgba(201, 133, 44, 0.12), transparent 60%),
    var(--bg);
  -webkit-font-smoothing: antialiased;
}

.page {
  max-width: 820px;
  margin: 0 auto;
  padding: 28px 18px 48px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
  color: var(--muted);
  font-size: 14px;
}

.brand .mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  background: linear-gradient(145deg, #e8a23a, #c9852c);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
}

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(40, 30, 10, 0.06);
  padding: 28px 24px 32px;
}

h1 {
  margin: 0 0 8px;
  font-size: 28px;
  line-height: 1.25;
  letter-spacing: 0.02em;
}

.meta {
  margin: 0 0 20px;
  color: var(--muted);
  font-size: 13px;
}

.body {
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.75;
  font-size: 15px;
}

.state {
  color: var(--muted);
  font-size: 14px;
  padding: 24px 0;
}

.state.is-error {
  color: #c2473a;
}

.footer {
  margin-top: 18px;
  color: var(--muted);
  font-size: 12px;
  text-align: center;
}

@media (max-width: 640px) {
  .page {
    padding: 18px 12px 36px;
  }

  .card {
    padding: 20px 16px 24px;
    border-radius: 12px;
  }

  h1 {
    font-size: 24px;
  }
}