:root {
  color-scheme: dark;
  --bg: #090b0f;
  --panel: #10141b;
  --line: #27313d;
  --text: #e7edf4;
  --muted: #9aa7b7;
  --accent: #48d597;
  --warn: #ffcc66;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

.shell {
  max-width: 980px;
  margin: 0 auto;
  padding: 38px 20px 80px;
}

.top {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 22px;
}

.top span {
  color: var(--muted);
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

h1 {
  font-size: clamp(38px, 8vw, 68px);
  line-height: 1.08;
  margin: 0 0 18px;
  letter-spacing: 0;
}

h2 {
  margin-top: 34px;
  border-top: 1px solid var(--line);
  padding-top: 22px;
}

h3 {
  margin-top: 26px;
}

p,
li {
  color: var(--text);
}

code {
  color: var(--warn);
  background: var(--panel);
  padding: 1px 5px;
  border-radius: 4px;
}

pre {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 14px;
  overflow: auto;
}

pre code {
  background: transparent;
  color: var(--text);
  padding: 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0;
  font-size: 14px;
}

th,
td {
  border: 1px solid var(--line);
  padding: 8px 10px;
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--panel);
}

blockquote {
  margin: 18px 0;
  padding-left: 16px;
  border-left: 3px solid var(--accent);
  color: var(--muted);
}

.viewer-block {
  margin: 30px 0 34px;
  width: min(1180px, calc(100vw - 40px));
  margin-left: 50%;
  transform: translateX(-50%);
  border: 1px solid var(--line);
  background: #05070a;
  border-radius: 6px;
  overflow: hidden;
}

.viewer-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  background: #0d1117;
}

.viewer-kicker {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.viewer-toolbar strong {
  color: var(--text);
}

.viewer-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 12px;
  font-size: 13px;
}

.viewer-frame-shell {
  position: relative;
  height: min(58vh, 560px);
  min-height: 420px;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(9, 11, 15, 0.9), rgba(9, 11, 15, 0) 14%),
    #05070a;
}

.viewer-frame {
  display: block;
  width: 100%;
  height: calc(100% + 360px);
  min-height: 760px;
  transform: translateY(-250px);
  border: 0;
  background: #05070a;
}

@media (max-width: 720px) {
  .viewer-toolbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .viewer-actions {
    justify-content: flex-start;
  }

  .viewer-frame-shell {
    min-height: 360px;
    height: 58vh;
  }

  .viewer-frame {
    min-height: 680px;
    transform: translateY(-220px);
  }
}