:root {
  color-scheme: dark;
  --bg: #141618;
  --text: #e9eae7;
  --muted: #a1a6aa;
  --line: #34383d;
  font-family: Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 110px;
}
body {
  background: var(--bg);
  color: var(--text);
  margin: 0;
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
}
a:focus-visible {
  outline: 2px solid #c3b59c;
  outline-offset: 5px;
}
img {
  display: block;
  max-width: 100%;
}
.skip-link {
  position: fixed;
  top: -80px;
  left: 20px;
  background: #eee;
  color: #111;
  padding: 12px;
  z-index: 30;
}
.skip-link:focus {
  top: 10px;
}
.article-header {
  position: sticky;
  top: 0;
  z-index: 10;
  height: 88px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 0 max(28px, calc((100vw - 1320px) / 2));
  border-bottom: 1px solid var(--line);
  background: #141618f5;
  backdrop-filter: blur(12px);
}
.article-header > a:last-child {
  font-size: 13px;
  color: var(--muted);
}
.article-brand {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 19px;
  letter-spacing: -0.5px;
}
.article-brand > span:last-child {
  border-left: 1px solid #53565a;
  padding-left: 20px;
}
.brand-logo {
  display: block;
  position: relative;
  width: 142px;
  aspect-ratio: 1375/189;
  overflow: hidden;
}
.brand-logo img {
  position: absolute;
  width: 139.636%;
  max-width: none;
  top: -222.751%;
  left: -19.855%;
}
.article-layout {
  width: min(1240px, calc(100% - 80px));
  margin: 64px auto 100px;
  display: grid;
  grid-template-columns: 245px minmax(0, 1fr);
  gap: 80px;
}
aside {
  position: sticky;
  top: 125px;
  align-self: start;
  max-height: calc(100vh - 160px);
  overflow: auto;
  padding-right: 12px;
}
.eyebrow {
  font-size: 10px;
  letter-spacing: 1.5px;
  color: var(--muted);
  margin: 0 0 25px;
}
aside nav {
  display: grid;
  gap: 15px;
}
aside nav a {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}
aside nav a:hover {
  color: var(--text);
}
aside nav .toc-level-2 {
  font-size: 13px;
  color: #ddd;
}
aside nav .toc-level-3 {
  padding-left: 12px;
}
.download {
  display: inline-block;
  margin-top: 32px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--muted);
}
article {
  min-width: 0;
  font-size: 16px;
  line-height: 1.95;
  overflow-wrap: anywhere;
}
article h1 {
  font-size: clamp(29px, 3.2vw, 45px);
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: -1px;
  margin: 0 0 36px;
}
article h2 {
  font-size: 26px;
  font-weight: 500;
  line-height: 1.5;
  margin: 58px 0 24px;
  padding-top: 27px;
  border-top: 1px solid var(--line);
}
article h3 {
  font-size: 20px;
  font-weight: 500;
  line-height: 1.6;
  margin: 34px 0 16px;
}
article p {
  color: #c6cacc;
  margin: 0 0 20px;
}
article strong {
  color: #eef0ed;
}
article a {
  color: #dcc9a7;
  border-bottom: 1px solid #716650;
}
figure {
  margin: 28px 0 18px;
  background: #eef0f0;
  padding: 12px;
}
figure img {
  width: 100%;
  height: auto;
}
.caption {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.7;
}
.table-scroll {
  overflow: auto;
  margin: 28px 0;
}
table {
  border-collapse: collapse;
  width: 100%;
  font-size: 14px;
}
td {
  border: 1px solid var(--line);
  padding: 12px 16px;
  vertical-align: top;
  min-width: 120px;
}
td p {
  margin: 0;
}
.footnotes {
  font-size: 13px;
}
.footnotes li {
  margin-bottom: 20px;
}
footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  width: min(1240px, calc(100% - 80px));
  margin: auto;
  padding: 30px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
}
@media (max-width: 1000px) {
  .article-layout {
    gap: 40px;
    grid-template-columns: 200px minmax(0, 1fr);
  }
}
@media (max-width: 760px) {
  .article-header {
    height: 72px;
    padding-inline: 20px;
  }
  .article-brand {
    gap: 12px;
    font-size: 16px;
  }
  .article-brand > span:last-child {
    padding-left: 12px;
  }
  .brand-logo {
    width: 104px;
  }
  .article-layout {
    width: calc(100% - 40px);
    margin-block: 32px 65px;
    display: block;
  }
  aside {
    position: static;
    max-height: none;
    margin-bottom: 35px;
    border-bottom: 1px solid var(--line);
    padding-bottom: 25px;
  }
  aside nav .toc-level-3 {
    display: none;
  }
  aside nav {
    gap: 10px;
  }
  aside .eyebrow {
    margin-bottom: 18px;
  }
  .download {
    margin-top: 18px;
    padding-top: 0;
    border: 0;
  }
  article {
    font-size: 15px;
  }
  article h1 {
    font-size: 30px;
  }
  article h2 {
    font-size: 23px;
    margin-top: 40px;
  }
  article h3 {
    font-size: 19px;
  }
  footer {
    width: calc(100% - 40px);
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}