:root {
  color-scheme: dark;
  --bg: #081014;
  --panel: #0d171c;
  --line: rgba(102, 224, 197, 0.18);
  --text: #f2f7f7;
  --muted: #9fb4b8;
  --accent: #66e0c5;
  --code: #101c22;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  min-width: 0;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 5%, rgba(102, 224, 197, 0.12), transparent 22rem),
    var(--bg);
  font-family: "IBM Plex Sans", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.72;
}

a {
  color: var(--accent);
}

.manual-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  background: rgba(8, 16, 20, 0.9);
  backdrop-filter: blur(14px);
}

.manual-header-inner {
  width: min(1180px, calc(100% - 36px));
  min-height: 58px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 22px;
  min-width: 0;
}

.manual-brand {
  flex: 0 0 auto;
  color: var(--text);
  font-size: 18px;
  font-weight: 800;
  text-decoration: none;
  letter-spacing: -0.04em;
}

.manual-brand span {
  color: var(--accent);
}

.manual-header nav {
  display: flex;
  align-items: center;
  gap: 5px;
  flex-wrap: wrap;
}

.manual-header nav a,
.language-link,
.repository-link {
  padding: 7px 10px;
  border-radius: 9px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
}

.manual-header nav a:hover,
.manual-header nav a.active {
  color: var(--text);
  background: rgba(102, 224, 197, 0.11);
}

.repository-link {
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.language-link {
  margin-left: auto;
}

.manual-layout {
  width: min(980px, calc(100% - 36px));
  margin: 42px auto 80px;
}

.markdown-body {
  min-width: 0;
  padding: clamp(24px, 5vw, 56px);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 22px;
  background: rgba(13, 23, 28, 0.84);
  box-shadow: 0 24px 72px rgba(0, 0, 0, 0.25);
  overflow-wrap: break-word;
}

.markdown-body > * {
  max-width: 100%;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4 {
  line-height: 1.28;
  scroll-margin-top: 78px;
}

.markdown-body h1 {
  margin: 0 0 28px;
  color: var(--accent);
  font-size: clamp(2rem, 5vw, 3.4rem);
  letter-spacing: -0.045em;
  overflow-wrap: anywhere;
}

.markdown-body h1 code {
  white-space: normal;
}

.markdown-body h2 {
  margin: 48px 0 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-size: 1.65rem;
}

.markdown-body h3 {
  margin: 34px 0 12px;
  font-size: 1.25rem;
}

.markdown-body h4 {
  margin: 26px 0 10px;
  font-size: 1.05rem;
}

.markdown-body p,
.markdown-body li {
  color: #d6e1e2;
}

.markdown-body blockquote {
  margin: 20px 0;
  padding: 12px 18px;
  border-left: 3px solid var(--accent);
  background: rgba(102, 224, 197, 0.07);
}

.markdown-body blockquote p {
  margin: 0;
}

.markdown-body code,
.markdown-body pre {
  max-width: 100%;
  font-family: "SFMono-Regular", "JetBrains Mono", Menlo, monospace;
}

.markdown-body :not(pre) > code {
  padding: 0.16em 0.38em;
  border: 1px solid rgba(102, 224, 197, 0.12);
  border-radius: 5px;
  color: #a7f3e3;
  background: var(--code);
  font-size: 0.9em;
}

.markdown-body pre {
  overflow-x: auto;
  margin: 18px 0;
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 13px;
  background: #071015;
  line-height: 1.55;
}

.markdown-body pre code {
  color: #dce9e9;
}

.markdown-body table {
  width: 100%;
  margin: 18px 0 26px;
  border-collapse: collapse;
  display: block;
  overflow-x: auto;
}

.markdown-body th,
.markdown-body td {
  min-width: 120px;
  padding: 10px 12px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  text-align: left;
  vertical-align: top;
}

.markdown-body th {
  color: var(--text);
  background: rgba(102, 224, 197, 0.08);
}

.markdown-body hr {
  margin: 42px 0;
  border: 0;
  border-top: 1px solid var(--line);
}

@media (max-width: 720px) {
  .manual-header-inner {
    padding: 10px 0;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 8px 14px;
  }

  .manual-header nav {
    order: 3;
    width: 100%;
  }

  .language-link {
    margin-left: 0;
  }

  .repository-link {
    margin-left: 0;
  }

  .manual-layout {
    margin-top: 20px;
  }

  .markdown-body {
    padding: 22px 18px;
    border-radius: 16px;
  }

  .markdown-body h1 {
    font-size: 1.8rem;
    word-break: break-word;
  }
}