:root {
  --bg: #000;
  --surface: #151515;
  --text: #f5f5f7;
  --muted: #a1a1a6;
  --border: rgba(255,255,255,.14);
  --accent: #fff;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  max-width: none !important;
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.65;
}

.site-header {
  width: 100%;
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1rem 5%;
  background: rgba(0,0,0,.86);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(16px);
}
.brand { display: flex; align-items: center; gap: .6rem; color: var(--text); font-weight: 700; text-decoration: none; }
.brand img { width: 2rem; height: 2rem; object-fit: contain; }
nav { display: flex; flex-wrap: wrap; gap: 1.25rem; }
nav a { color: var(--muted); text-decoration: none; font-size: .95rem; }
nav a:hover, nav a.active { color: var(--text); }

.download-pdf {
  position: fixed;
  right: 1.5rem;
  bottom: 1.5rem;
  z-index: 11;
  padding: .75rem 1rem;
  color: #000;
  background: #fff;
  border-radius: 999px;
  box-shadow: 0 8px 28px rgba(0,0,0,.45);
  font-weight: 700;
  text-decoration: none;
}
.download-pdf:hover { background: #d9d9d9; }

.manual-content {
  width: min(100% - 2rem, 980px);
  margin: 0 auto;
  padding: 4rem 0 6rem;
  text-align: left;
}
.manual-content > p:nth-of-type(-n + 7) { text-align: center; }
.manual-content > p:nth-of-type(3) { margin-top: .8rem; font-size: clamp(2.1rem, 6vw, 4.2rem); font-weight: 800; letter-spacing: -.04em; line-height: 1.05; }
.manual-content > p:nth-of-type(3) .ec-lmbx-12x-x-207 { font-size: 1em; }
.manual-content > p:nth-of-type(4) { color: var(--muted); font-size: 1.2rem; }
.manual-content > p:nth-of-type(4) .ec-lmr-12x-x-120 { font-size: 1em; }
.manual-content > p:nth-of-type(5) { margin-top: 2rem; }
.manual-content > p:nth-of-type(5),
.manual-content > p:nth-of-type(6),
.manual-content > p:nth-of-type(7) { color: var(--muted); }
.manual-content > p:nth-of-type(2) img { width: 5rem; border: 0; }
.manual-content img { width: auto; max-width: 100%; height: auto; border: 1px solid var(--border); border-radius: .45rem; }
.manual-content .center { text-align: center; margin: 1.75rem 0 2.5rem; }
.manual-content .tableofcontents {
  margin: 2rem 0 3.5rem;
  padding: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: .75rem;
}
.manual-content .tableofcontents a, .manual-content a, footer a { color: var(--text); }
.manual-content h3.sectionHead, .manual-content h3.likesectionHead { margin: 4rem 0 1.25rem; font-size: clamp(1.7rem, 4vw, 2.35rem); line-height: 1.2; }
.manual-content h4.subsectionHead { margin: 2.25rem 0 .8rem; font-size: 1.3rem; line-height: 1.3; }
.manual-content li { margin: .35rem 0; }
.manual-content .fbox { display: inline-block; max-width: 100%; padding: .25rem; border-color: var(--border); }
.manual-content div.center div { text-align: center; }
.manual-content table { max-width: 100%; color: var(--text); }
.manual-content td { padding: .6rem .85rem; border-color: var(--border); }
.manual-content .hline, .manual-content .hline:first-child { border-color: var(--border); }
.manual-content .hline hr, .manual-content .cline hr { border-color: var(--border); }
.manual-content p.bibitem { margin: 1rem 0 1rem 2rem; }
footer { padding: 2rem 5%; border-top: 1px solid var(--border); color: var(--muted); text-align: center; }

@media (max-width: 650px) {
  .site-header { padding: .8rem 1rem; align-items: flex-start; }
  .brand span { display: none; }
  nav { gap: .7rem; }
  nav a { font-size: .82rem; }
  .manual-content { width: min(100% - 1.25rem, 980px); padding-top: 2.25rem; }
  .download-pdf { right: 1rem; bottom: 1rem; }
}