:root {
  color-scheme: light;
  --page-bg: #f8fafc;
  --ink: #1f2937;
  --muted: #6b7280;
  --line: #e5e7eb;
  --soft-line: #f3f4f6;
  --jade: #10b981;
  --jade-dark: #059669;
  --header-a: #0a0f1e;
  --header-b: #1a1f3e;
  --card: #ffffff;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  text-size-adjust: 100%;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--page-bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.7;
}

body.menu-open {
  overflow: hidden;
}

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

a:hover {
  color: var(--jade-dark);
}

img {
  max-width: 100%;
  height: auto;
}

button,
input {
  font: inherit;
}

:focus-visible {
  outline: 3px solid rgba(16, 185, 129, 0.35);
  outline-offset: 3px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  left: 12px;
  top: 12px;
  z-index: 1000;
  transform: translateY(-140%);
  padding: 8px 12px;
  border-radius: 6px;
  background: #111827;
  color: #ffffff;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  background: linear-gradient(135deg, var(--header-a), var(--header-b));
  padding: 12px 20px;
  border: 0;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  max-width: 1100px;
  margin: 0 auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--jade);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
}

.brand:hover {
  color: #34d399;
}

.brand__leaf {
  font-size: 20px;
  line-height: 1;
}

.brand__text {
  display: inline;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0;
}

.site-nav a {
  color: #94a3b8;
  margin-left: 16px;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: color 160ms ease;
}

.site-nav a:hover,
.site-nav a.is-active {
  color: var(--jade);
}

.site-search {
  display: none;
}

.menu-button {
  display: none;
  width: 40px;
  height: 36px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  border: 1px solid rgba(148, 163, 184, 0.35);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  cursor: pointer;
}

.menu-button span:not(.sr-only) {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: #d1d5db;
}

#root {
  min-height: 56vh;
}

#root:empty {
  display: block;
}

#root:empty::before {
  content: "页面加载中，请稍候。";
  display: block;
  max-width: 900px;
  margin: 32px auto;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--card);
  color: var(--muted);
  box-shadow: var(--shadow);
}

.legacy-breadcrumb,
#root main > nav[aria-label],
#root > div > nav[aria-label] {
  display: block !important;
  max-width: 1100px !important;
  margin: 0 auto !important;
  padding: 10px 20px !important;
  background: #ffffff !important;
  border-bottom: 1px solid var(--line) !important;
  color: var(--muted) !important;
  font-size: 13px !important;
  line-height: 1.6 !important;
}

.legacy-breadcrumb a,
#root main > nav[aria-label] a,
#root > div > nav[aria-label] a {
  color: var(--jade) !important;
}

.legacy-main-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 20px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 24px;
}

#root .legacy-single,
#root > main:not(#ssr-article-body),
#root > div[id^="ssr-"]:not(.legacy-main-container) {
  max-width: 1100px !important;
  margin: 24px auto !important;
  padding: 32px !important;
  background: var(--card) !important;
  border: 0 !important;
  border-radius: 12px !important;
  box-shadow: var(--shadow) !important;
  color: #374151 !important;
  font-size: 15px !important;
  line-height: 1.8 !important;
}

#root #ssr-homepage.legacy-single {
  max-width: 1100px !important;
}

#root #ssr-article-body.article-main {
  max-width: none !important;
  width: auto !important;
  margin: 0 !important;
  padding: 32px !important;
  background: var(--card) !important;
  border: 0 !important;
  border-radius: 12px !important;
  box-shadow: var(--shadow) !important;
  color: #374151 !important;
  font-size: 15px !important;
  line-height: 1.8 !important;
}

#root #ssr-article-body.article-main > nav[aria-label] {
  display: none !important;
}

#root h1,
#root .article-title {
  color: #111827 !important;
  font-size: 26px !important;
  font-weight: 700 !important;
  line-height: 1.4 !important;
  margin: 0 0 16px !important;
  letter-spacing: 0 !important;
}

#root #ssr-homepage h1 {
  font-size: 28px !important;
}

#root h2 {
  color: #111827 !important;
  font-size: 20px !important;
  font-weight: 700 !important;
  line-height: 1.5 !important;
  margin: 24px 0 12px !important;
  border-left: 0 !important;
  padding-left: 0 !important;
}

#root h3 {
  color: #1f2937 !important;
  font-size: 17px !important;
  font-weight: 700 !important;
  line-height: 1.55 !important;
  margin: 20px 0 10px !important;
}

#root h4 {
  color: #1f2937 !important;
  font-size: 15px !important;
  font-weight: 700 !important;
  margin: 16px 0 8px !important;
}

#root p {
  margin: 0 0 14px !important;
  color: #374151 !important;
  line-height: 1.8 !important;
  overflow-wrap: anywhere;
}

#root ul,
#root ol {
  margin: 0 0 14px !important;
  padding-left: 24px !important;
}

#root li {
  margin-bottom: 6px !important;
}

#root table {
  width: 100% !important;
  border-collapse: collapse !important;
  margin: 16px 0 !important;
}

#root th,
#root td {
  padding: 10px !important;
  border: 1px solid var(--line) !important;
  font-size: 14px !important;
}

#root th {
  background: #f3f4f6 !important;
}

#root a {
  color: var(--jade) !important;
  text-decoration: none !important;
}

#root a:hover {
  color: var(--jade-dark) !important;
}

.article-meta {
  display: flex !important;
  flex-wrap: wrap !important;
  gap: 12px !important;
  color: var(--muted) !important;
  font-size: 13px !important;
  margin-bottom: 16px !important;
  padding-bottom: 16px !important;
  border-bottom: 1px solid var(--soft-line) !important;
}

.article-meta span,
.article-meta time {
  margin-left: 0 !important;
}

.article-content {
  color: #374151 !important;
  font-size: 15px !important;
  line-height: 1.8 !important;
}

.sidebar {
  position: sticky;
  top: 20px;
  height: fit-content;
}

.sidebar-card {
  margin-bottom: 16px;
  padding: 20px;
  background: #ffffff;
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.sidebar-card h3 {
  margin: 0 0 12px !important;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--soft-line);
  color: #1f2937 !important;
  font-size: 15px !important;
}

.sidebar-card ul {
  list-style: none;
  margin: 0 !important;
  padding: 0 !important;
}

.sidebar-card li {
  margin: 0 !important;
  padding: 6px 0;
  border-bottom: 1px solid #f9fafb;
}

.sidebar-card li:last-child {
  border-bottom: 0;
}

.sidebar-card a {
  color: #374151 !important;
  font-size: 13px !important;
  line-height: 1.5 !important;
}

.sidebar-card a:hover {
  color: var(--jade) !important;
}

.legacy-home-hero {
  margin: -32px -32px 28px;
  padding: 34px 32px;
  border-radius: 12px 12px 0 0;
  background: linear-gradient(135deg, #e1efe5, #f6f5f3);
  border-bottom: 1px solid #dbe7df;
}

.legacy-home-hero h1 {
  margin-bottom: 10px !important;
}

.legacy-home-hero p {
  max-width: 760px;
  color: #475569 !important;
}

.site-footer {
  margin-top: 40px;
  padding: 24px;
  background: var(--header-a);
  color: #64748b;
  text-align: center;
  font-size: 13px;
}

.site-footer__inner {
  max-width: 1100px;
  margin: 0 auto;
}

.site-footer p {
  margin: 0 0 10px;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 16px;
}

.site-footer a {
  color: var(--jade);
}

.back-top {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 80;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #ffffff;
  color: var(--jade-dark);
  box-shadow: var(--shadow);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.back-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

@media (max-width: 768px) {
  .site-header__inner {
    align-items: center;
  }

  .menu-button {
    display: inline-flex;
  }

  .site-nav {
    display: none;
  }

  .site-header.is-open .site-header__inner {
    flex-wrap: wrap;
  }

  .site-header.is-open .site-nav {
    display: flex;
    flex-basis: 100%;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding: 8px 0 2px;
  }

  .site-nav a {
    margin-left: 0;
  }

  .legacy-main-container {
    grid-template-columns: 1fr;
    padding: 20px 16px;
  }

  .sidebar {
    display: none;
  }

  #root .legacy-single,
  #root > main:not(#ssr-article-body),
  #root > div[id^="ssr-"]:not(.legacy-main-container),
  #root #ssr-article-body.article-main {
    margin: 20px 16px !important;
    padding: 24px 20px !important;
  }

  .legacy-main-container #ssr-article-body.article-main {
    margin: 0 !important;
  }

  .legacy-home-hero {
    margin: -24px -20px 24px;
    padding: 28px 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}