:root {
  color-scheme: light;
  --paper: #faf9f5;
  --surface: #f0f1e9;
  --ink: #292e28;
  --muted: #62685d;
  --green: #315e49;
  --line: #dddfd4;
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.85;
  background: var(--paper);
  color: var(--ink);
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
}
a {
  color: var(--green);
  text-underline-offset: 0.22em;
  text-decoration-thickness: 1px;
}
a:hover {
  text-decoration-thickness: 2px;
}
a:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--green);
  outline-offset: 5px;
  border-radius: 2px;
}
p,
li,
dd,
a {
  overflow-wrap: anywhere;
}
button,
summary,
a {
  -webkit-tap-highlight-color: transparent;
}
.skip-link {
  position: fixed;
  top: 12px;
  left: 16px;
  transform: translateY(-160%);
  z-index: 3;
  padding: 8px 16px;
  background: var(--ink);
  color: var(--paper);
}
.skip-link:focus {
  transform: translateY(0);
}
.topbar {
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  max-width: 1240px;
  margin: auto;
  min-height: 86px;
  padding: 18px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.identity {
  display: flex;
  align-items: baseline;
  gap: 18px;
}
.brand {
  color: var(--ink);
  font-size: 25px;
  font-weight: 750;
  letter-spacing: -0.055em;
  text-decoration: none;
  white-space: nowrap;
}
.identity-label {
  border-left: 1px solid var(--line);
  padding-left: 18px;
  font-size: 14px;
  color: var(--muted);
  white-space: nowrap;
}
.header-links {
  display: flex;
  gap: 24px;
  font-size: 14px;
}
.header-links a {
  text-decoration: none;
}
.header-links a:hover {
  text-decoration: underline;
}
.layout {
  max-width: 1240px;
  margin: auto;
  padding: 48px 40px 80px;
  display: grid;
  grid-template-columns: 202px minmax(0, 760px);
  gap: 64px;
  align-items: start;
}
.sidebar {
  position: sticky;
  top: 32px;
}
.nav-label {
  margin: 0 0 16px 12px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}
.guide-nav ul {
  margin: 0;
  padding: 0;
  list-style: none;
}
.guide-nav a {
  display: block;
  padding: 9px 12px;
  margin-bottom: 4px;
  text-decoration: none;
  color: var(--muted);
  font-size: 14px;
  border-radius: 4px;
}
.guide-nav a:hover {
  background: var(--surface);
  color: var(--ink);
}
.guide-nav a[aria-current="page"] {
  color: var(--green);
  background: #e7ebdf;
  font-weight: 650;
}
.sidebar-extra {
  margin: 28px 12px 0;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 13px;
}
.sidebar-extra p {
  margin: 0 0 10px;
}
.mobile-nav {
  display: none;
}
main {
  min-width: 0;
}
.eyebrow {
  margin: 0 0 10px;
  color: var(--green);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
}
h1 {
  margin: 0;
  font-size: clamp(28px, 3.1vw, 38px);
  font-weight: 650;
  line-height: 1.35;
  letter-spacing: -0.025em;
}
.updated {
  margin: 15px 0 32px;
  color: var(--muted);
  font-size: 12px;
}
.article {
  max-width: 740px;
}
.article .lead {
  margin: 0 0 30px;
  font-size: 18px;
  line-height: 1.85;
  color: var(--muted);
}
.toc {
  margin: 0 0 36px;
  padding: 16px 20px;
  border-left: 2px solid var(--line);
}
.toc-title {
  margin: 0 0 8px;
  font-size: 12px;
  color: var(--muted);
}
.toc ol {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 22px;
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 13px;
}
.toc li {
  margin: 0;
}
.toc a {
  text-decoration: none;
}
.toc a:hover {
  text-decoration: underline;
}
h2 {
  margin: 48px 0 16px;
  font-size: 23px;
  font-weight: 650;
  line-height: 1.5;
  letter-spacing: -0.015em;
  scroll-margin-top: 24px;
}
h3 {
  margin: 26px 0 10px;
  font-size: 17px;
  line-height: 1.6;
}
p {
  margin: 14px 0;
}
ul,
ol {
  padding-left: 24px;
}
li {
  padding-left: 3px;
  margin: 10px 0;
}
li::marker {
  color: var(--green);
}
strong {
  font-weight: 650;
}
code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.88em;
  background: var(--surface);
  padding: 2px 5px;
  border-radius: 3px;
  overflow-wrap: anywhere;
}
pre {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 18px 22px;
  margin: 22px 0;
  line-height: 1.8;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
pre code {
  padding: 0;
  border: none;
  background: none;
}
dl {
  margin: 24px 0;
}
dt {
  font-size: 16px;
  font-weight: 650;
  margin-top: 22px;
}
dd {
  margin: 6px 0 0;
  color: var(--muted);
}
.note {
  margin: 26px 0;
  padding: 4px 22px;
  border-left: 3px solid #809375;
  background: var(--surface);
  font-size: 14px;
}
.steps {
  padding-left: 27px;
}
.steps li {
  padding: 5px 0 11px 7px;
}
.steps li > a {
  font-weight: 650;
}
.steps p {
  margin: 7px 0 0;
  color: var(--muted);
}
.topic-list {
  list-style: none;
  padding: 0;
  margin: 20px 0 26px;
  border-top: 1px solid var(--line);
}
.topic-list li {
  padding: 0;
  margin: 0;
  border-bottom: 1px solid var(--line);
}
.topic-list a {
  display: block;
  padding: 19px 0;
  font-weight: 600;
  text-decoration: none;
}
.topic-list a:hover {
  text-decoration: underline;
}
.topic-list span {
  display: block;
  margin-top: 3px;
  font-size: 14px;
  color: var(--muted);
  font-weight: 400;
}
.button {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  margin: 8px 0;
  padding: 10px 18px;
  border-radius: 4px;
  background: var(--green);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}
.button:hover {
  background: #254b39;
  text-decoration: none;
}
.button:active {
  transform: translateY(1px);
}
.contact-email {
  font-size: clamp(18px, 4vw, 25px);
  font-weight: 600;
  margin-bottom: 24px;
}
.page-turn {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 20px;
  border-top: 1px solid var(--line);
  margin-top: 52px;
  padding-top: 24px;
  font-size: 14px;
}
.page-turn a {
  text-decoration: none;
}
.page-turn a:hover {
  text-decoration: underline;
}
.page-turn span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  margin-bottom: 4px;
}
.article-help {
  font-size: 13px;
  color: var(--muted);
  margin-top: 32px;
}
.footer {
  border-top: 1px solid var(--line);
}
.footer-inner {
  max-width: 1240px;
  padding: 24px 40px 32px;
  margin: auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px 28px;
  color: var(--muted);
  font-size: 12px;
}
.footer p {
  margin: 0;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
}
.footer a {
  color: var(--muted);
  text-decoration: none;
}
.footer a:hover {
  text-decoration: underline;
}
@media (max-width: 1023px) {
  .layout {
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 36px;
    padding: 36px 28px 64px;
  }
  .topbar-inner,
  .footer-inner {
    padding-left: 28px;
    padding-right: 28px;
  }
}
@media (max-width: 767px) {
  .topbar-inner {
    padding: 16px 20px;
    min-height: 72px;
    gap: 12px;
  }
  .identity {
    gap: 12px;
  }
  .brand {
    font-size: 23px;
  }
  .identity-label {
    padding-left: 12px;
    font-size: 12px;
  }
  .header-links {
    font-size: 12px;
    gap: 12px;
  }
  .header-download {
    display: none;
  }
  .sidebar {
    display: none;
  }
  .mobile-nav {
    display: block;
    border-bottom: 1px solid var(--line);
    background: var(--surface);
    padding: 0 20px;
  }
  .mobile-nav summary {
    cursor: pointer;
    padding: 13px 0;
    font-size: 13px;
    color: var(--green);
  }
  .mobile-nav .guide-nav {
    padding-bottom: 12px;
  }
  .mobile-nav .guide-nav a {
    padding: 10px 12px;
  }
  .layout {
    display: block;
    padding: 32px 20px 52px;
  }
  h1 {
    font-size: 29px;
  }
  h2 {
    font-size: 21px;
    margin-top: 38px;
  }
  .updated {
    margin-bottom: 24px;
  }
  .article .lead {
    font-size: 17px;
  }
  .toc {
    padding: 12px 16px;
    margin-bottom: 28px;
  }
  .toc ol {
    display: block;
  }
  .toc li {
    margin: 5px 0;
  }
  .toc a {
    display: inline-block;
    padding: 3px 0;
  }
  pre {
    padding: 16px;
  }
  .footer-inner {
    padding: 24px 20px 30px;
    flex-direction: column;
  }
}
@media print {
  .topbar,
  .sidebar,
  .mobile-nav,
  .toc,
  .page-turn,
  .article-help,
  .skip-link {
    display: none;
  }
  .layout {
    display: block;
    padding: 0;
  }
  :root {
    background: #fff;
    font-size: 11pt;
  }
  a {
    color: inherit;
  }
  h2,
  h3 {
    break-after: avoid;
  }
  pre,
  .note {
    break-inside: avoid;
  }
}