:root {
  --vp-c-white: #ffffff;
  --vp-c-black: #000000;
  --vp-c-gray-1: #dddde3;
  --vp-c-gray-2: #e4e4e9;
  --vp-c-gray-3: #ebebef;
  --vp-c-gray-soft: rgba(142, 150, 170, 0.14);

  --vp-c-indigo-1: #3451b2;
  --vp-c-indigo-2: #3a5ccc;
  --vp-c-indigo-3: #5672cd;
  --vp-c-indigo-soft: rgba(100, 108, 255, 0.14);

  --vp-c-green-1: #18794e;
  --vp-c-green-2: #299764;
  --vp-c-green-soft: rgba(16, 185, 129, 0.14);

  --vp-c-yellow-1: #915930;
  --vp-c-yellow-soft: rgba(234, 179, 8, 0.14);

  --vp-c-bg: #ffffff;
  --vp-c-bg-alt: #f6f6f7;
  --vp-c-bg-elv: #ffffff;
  --vp-c-bg-soft: #f6f6f7;

  --vp-c-border: #c2c2c4;
  --vp-c-divider: #e2e2e3;
  --vp-c-gutter: #e2e2e3;

  --vp-c-text-1: #3c3c43;
  --vp-c-text-2: #67676c;
  --vp-c-text-3: #929295;

  --vp-c-brand: var(--vp-c-indigo-1);
  --vp-c-brand-2: var(--vp-c-indigo-2);
  --vp-c-brand-3: var(--vp-c-indigo-3);
  --vp-c-brand-soft: var(--vp-c-indigo-soft);

  --vp-c-tip-1: var(--vp-c-indigo-1);
  --vp-c-tip-soft: var(--vp-c-indigo-soft);
  --vp-c-warning-1: var(--vp-c-yellow-1);
  --vp-c-warning-soft: var(--vp-c-yellow-soft);

  --vp-c-divider-soft: #ebedf0;

  --vp-nav-height: 64px;
  --vp-sidebar-width: 272px;
  --vp-layout-max-width: 1440px;

  /* 形状与阴影：与 6v 保持同一套节奏 */
  --radius: 12px;
  --radius-sm: 8px;
  --shadow-color: rgba(20, 30, 80, 0.12);
  --shadow-color-strong: rgba(20, 30, 80, 0.18);

  --vp-shadow-1: 0 1px 2px var(--shadow-color), 0 1px 8px var(--shadow-color);
  --vp-shadow-3: 0 12px 32px var(--shadow-color-strong),
    0 2px 6px var(--shadow-color);

  --vp-font-family: "Punctuation SC", "Inter", -apple-system, BlinkMacSystemFont,
    "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --vp-font-family-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    "Liberation Mono", "Courier New", monospace;

  color-scheme: light;
}

.dark {
  --vp-c-gray-1: #515c67;
  --vp-c-gray-2: #414853;
  --vp-c-gray-3: #32363f;
  --vp-c-gray-soft: rgba(101, 117, 133, 0.16);

  --vp-c-indigo-1: #a8b1ff;
  --vp-c-indigo-2: #5c73e7;
  --vp-c-indigo-3: #3e63dd;
  --vp-c-indigo-soft: rgba(100, 108, 255, 0.16);

  --vp-c-green-1: #3dd68c;
  --vp-c-green-soft: rgba(16, 185, 129, 0.16);

  --vp-c-yellow-1: #f9b44e;
  --vp-c-yellow-soft: rgba(234, 179, 8, 0.16);

  --vp-c-bg: #1b1b1f;
  --vp-c-bg-alt: #161618;
  --vp-c-bg-elv: #202127;
  --vp-c-bg-soft: #202127;

  --vp-c-border: #3c3f44;
  --vp-c-divider: #2e2e32;
  --vp-c-gutter: #000000;

  --vp-c-text-1: #dfdfd6;
  --vp-c-text-2: #98989f;
  --vp-c-text-3: #6a6a71;

  --vp-shadow-1: 0 1px 2px rgba(0, 0, 0, 0.3);
  --vp-shadow-3: 0 12px 32px rgba(0, 0, 0, 0.5), 0 2px 6px rgba(0, 0, 0, 0.3);
}

/* ---------- Reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--vp-nav-height) + 16px);
}

body {
  margin: 0;
  font-family: var(--vp-font-family);
  font-size: 16px;
  line-height: 1.6;
  color: var(--vp-c-text-1);
  background-color: var(--vp-c-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--vp-c-brand);
  text-decoration: none;
  transition: color 0.25s;
}

a:hover {
  color: var(--vp-c-brand-2);
}

img {
  max-width: 100%;
  vertical-align: middle;
}

button {
  font-family: inherit;
  cursor: pointer;
}

.visually-hidden {
  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:focus {
  top: 8px;
  left: 8px;
  z-index: 999;
  padding: 8px 16px;
  background: var(--vp-c-bg);
  border: 1px solid var(--vp-c-brand);
  border-radius: 6px;
  clip: auto;
  width: auto;
  height: auto;
  margin: 0;
}

/* ---------- 布局容器 ---------- */
.container {
  max-width: var(--vp-layout-max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- 顶部导航 ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.88);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--vp-c-divider);
}

.dark .nav {
  background-color: rgba(27, 27, 31, 0.88);
}

.nav__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--vp-nav-height);
}

.nav__title {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  height: var(--vp-nav-height);
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 600;
  color: var(--vp-c-text-1);
}

.nav__brand:hover {
  color: var(--vp-c-text-1);
}

.nav__logo {
  width: 32px;
  height: 32px;
}

.nav__brand-text {
  white-space: nowrap;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav__link {
  display: block;
  padding: 8px 12px;
  font-size: 14px;
  font-weight: 500;
  color: var(--vp-c-text-1);
  border-radius: 6px;
  transition: color 0.25s, background-color 0.25s;
}

.nav__link:hover {
  color: var(--vp-c-brand);
  background-color: var(--vp-c-bg-soft);
}

.nav__link.is-active {
  color: var(--vp-c-brand);
}

.nav__tools {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav__icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  color: var(--vp-c-text-1);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 8px;
  transition: background-color 0.25s, border-color 0.25s;
}

.nav__icon-btn:hover {
  background-color: var(--vp-c-bg-soft);
  border-color: var(--vp-c-divider);
}

.nav__icon {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

/* 主题图标由 .dark 类控制显隐，不使用行内样式 */
.icon-sun {
  display: block;
}

.icon-moon {
  display: none;
}

.dark .icon-sun {
  display: none;
}

.dark .icon-moon {
  display: block;
}

.nav__toggle {
  display: none;
}

/* ---------- Hero ---------- */
.hero {
  max-width: 1152px;
  margin: 0 auto;
  padding: 64px 24px 48px;
  display: flex;
  align-items: center;
  gap: 56px;
}

.hero__body {
  flex: 1 1 auto;
  min-width: 0;
}

.hero__eyebrow {
  display: inline-block;
  margin: 0 0 18px;
  padding: 5px 14px;
  border: 1px solid var(--vp-c-divider);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  color: var(--vp-c-brand);
  background-color: var(--vp-c-brand-soft);
  letter-spacing: 0.01em;
}

.hero__name {
  display: block;
  margin: 0;
  font-size: 44px;
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.02em;
  background: linear-gradient(120deg, var(--vp-c-brand) 30%, #6f42c1);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero__text {
  margin: 14px 0 0;
  font-size: 20px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--vp-c-text-1);
}

.hero__tagline {
  max-width: 560px;
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--vp-c-text-2);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  border: 1px solid transparent;
  border-radius: 10px;
  transition: all 0.2s;
}

.btn--brand {
  color: #fff;
  background-color: var(--vp-c-brand);
  border-color: var(--vp-c-brand);
}

.btn--brand:hover {
  color: #fff;
  background-color: var(--vp-c-brand-2);
  border-color: var(--vp-c-brand-2);
  box-shadow: var(--vp-shadow-1);
}

.btn--alt {
  color: var(--vp-c-text-1);
  background-color: var(--vp-c-bg-soft);
  border-color: var(--vp-c-divider);
}

.btn--alt:hover {
  color: var(--vp-c-brand);
  border-color: var(--vp-c-brand);
}

.hero__image {
  flex: 0 0 300px;
  max-width: 300px;
}

.hero__image img {
  width: 100%;
  height: auto;
}

@media (max-width: 960px) {
  .hero {
    flex-direction: column;
    text-align: center;
    gap: 32px;
    padding: 40px 16px 32px;
  }

  .hero__actions {
    justify-content: center;
  }

  .hero__image {
    flex: 0 0 auto;
    max-width: 240px;
  }
}

/* ---------- Features ---------- */
.features {
  max-width: 1152px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  padding: 8px 24px 72px;
}

.feature {
  position: relative;
  padding: 24px 22px 22px;
  background-color: var(--vp-c-bg-elv);
  border: 1px solid var(--vp-c-divider);
  border-top: 3px solid var(--vp-c-brand);
  border-radius: var(--radius);
  transition: box-shadow 0.2s, transform 0.2s;
}

.feature:hover {
  box-shadow: var(--vp-shadow-3);
  transform: translateY(-2px);
}

.feature__title {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--vp-c-text-1);
}

.feature__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--vp-c-text-2);
}

.feature__desc strong {
  font-weight: 600;
  color: var(--vp-c-brand);
}

/* ---------- 百科枢纽页 ---------- */
.baike__intro {
  margin: 8px 0 28px;
  color: var(--vp-c-text-2);
  font-size: 15px;
  line-height: 1.7;
}

.baike__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.baike__card {
  display: block;
  padding: 20px 20px 18px;
  background-color: var(--vp-c-bg-elv);
  border: 1px solid var(--vp-c-divider);
  border-top: 3px solid var(--vp-c-brand);
  border-radius: var(--radius);
  text-decoration: none;
  color: inherit;
  transition: box-shadow 0.2s, transform 0.2s;
}

.baike__card:hover {
  box-shadow: var(--vp-shadow-3);
  transform: translateY(-2px);
}

.baike__card-title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 600;
  color: var(--vp-c-text-1);
}

.baike__card-desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--vp-c-text-2);
}

/* ---------- 404 页 ---------- */
.notfound {
  max-width: 560px;
  margin: 48px auto 64px;
  text-align: center;
}

.notfound__code {
  margin: 0;
  font-size: 72px;
  font-weight: 700;
  line-height: 1;
  color: var(--vp-c-brand);
}

.notfound__title {
  margin: 12px 0 8px;
  font-size: 24px;
  font-weight: 600;
  color: var(--vp-c-text-1);
}

.notfound__msg {
  margin: 0 0 24px;
  color: var(--vp-c-text-2);
  font-size: 15px;
}

.notfound__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

/* ---------- 文档区布局 ---------- */
.layout {
  display: flex;
  align-items: flex-start;
  max-width: var(--vp-layout-max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.sidebar {
  position: sticky;
  top: var(--vp-nav-height);
  flex: 0 0 var(--vp-sidebar-width);
  width: var(--vp-sidebar-width);
  max-height: calc(100vh - var(--vp-nav-height));
  padding: 32px 24px 64px 0;
  overflow-y: auto;
  border-right: 1px solid var(--vp-c-divider);
}

.sidebar__group {
  margin-bottom: 24px;
}

.sidebar__title {
  margin: 0 0 10px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--vp-c-text-2);
}

.sidebar__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.sidebar__link {
  display: block;
  padding: 6px 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--vp-c-text-2);
  border-left: 2px solid transparent;
  padding-left: 12px;
  margin-left: -14px;
  transition: color 0.25s, border-color 0.25s;
}

.sidebar__link:hover {
  color: var(--vp-c-text-1);
}

.sidebar__link.is-active {
  color: var(--vp-c-brand);
  border-left-color: var(--vp-c-brand);
  font-weight: 600;
}

.content {
  flex: 1 1 auto;
  min-width: 0;
  padding: 32px 0 64px 48px;
}

/* ---------- 正文排版 ---------- */
.doc {
  max-width: 768px;
}

.doc h1 {
  margin: 0 0 24px;
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--vp-c-text-1);
}

.doc h2 {
  margin: 48px 0 16px;
  padding-top: 24px;
  font-size: 24px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--vp-c-text-1);
  border-top: 1px solid var(--vp-c-divider);
}

.doc h3 {
  margin: 32px 0 12px;
  font-size: 20px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--vp-c-text-1);
}

.doc h4 {
  margin: 24px 0 8px;
  font-size: 17px;
  font-weight: 600;
  color: var(--vp-c-text-1);
}

.doc p {
  margin: 16px 0;
  line-height: 1.75;
  color: var(--vp-c-text-1);
}

.doc ul,
.doc ol {
  margin: 16px 0;
  padding-left: 24px;
  line-height: 1.8;
}

.doc li {
  margin: 6px 0;
}

.doc li > ul,
.doc li > ol {
  margin: 6px 0;
}

.doc strong {
  font-weight: 600;
  color: var(--vp-c-text-1);
}

.doc blockquote {
  margin: 20px 0;
  padding: 12px 16px;
  color: var(--vp-c-text-2);
  background-color: var(--vp-c-bg-soft);
  border-left: 3px solid var(--vp-c-brand);
  border-radius: 0 8px 8px 0;
}

.doc blockquote p {
  margin: 0;
}

.doc code {
  padding: 2px 6px;
  font-family: var(--vp-font-family-mono);
  font-size: 0.875em;
  color: var(--vp-c-text-1);
  background-color: var(--vp-c-gray-soft);
  border-radius: 4px;
}

.doc pre {
  margin: 20px 0;
  padding: 16px 20px;
  overflow-x: auto;
  background-color: var(--vp-c-bg-alt);
  border-radius: 8px;
}

.doc pre code {
  padding: 0;
  font-size: 14px;
  line-height: 1.7;
  background: none;
}

.doc img {
  display: block;
  margin: 24px 0;
  border: 1px solid var(--vp-c-divider);
  border-radius: 10px;
  box-shadow: var(--vp-shadow-1);
}

.doc table {
  width: 100%;
  margin: 24px 0;
  border-collapse: collapse;
  font-size: 14px;
}

.doc .table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.doc th,
.doc td {
  padding: 10px 14px;
  text-align: left;
  border: 1px solid var(--vp-c-divider);
}

.doc th {
  font-weight: 600;
  background-color: var(--vp-c-bg-soft);
}

.doc hr {
  margin: 32px 0;
  border: none;
  border-top: 1px solid var(--vp-c-divider);
}

/* 自定义提示块 */
.custom-block {
  margin: 24px 0;
  padding: 16px 20px;
  border-radius: 8px;
  background-color: var(--vp-c-tip-soft);
  border-left: 3px solid var(--vp-c-tip-1);
}

.custom-block__title {
  margin: 0 0 6px !important;
  font-weight: 600;
  color: var(--vp-c-tip-1);
}

.custom-block p {
  margin: 8px 0 !important;
}

.custom-block--warning {
  background-color: var(--vp-c-warning-soft);
  border-left-color: var(--vp-c-warning-1);
}

.custom-block--warning .custom-block__title {
  color: var(--vp-c-warning-1);
}

/* ---------- 友情链接 ---------- */
.friends {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--vp-c-divider);
}

.friends__title {
  margin: 0 0 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--vp-c-text-2);
}

.friends__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  font-size: 13px;
  line-height: 1.8;
}

.friends__list a {
  color: var(--vp-c-text-2);
}

.friends__list a:hover {
  color: var(--vp-c-brand);
  text-decoration: underline;
}

/* ---------- 上下页导航 ---------- */
.doc-nav {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--vp-c-divider);
}

.doc-nav__item {
  flex: 1 1 0;
  padding: 14px 18px;
  background-color: var(--vp-c-bg-soft);
  border: 1px solid var(--vp-c-divider);
  border-radius: 8px;
  transition: border-color 0.25s;
}

.doc-nav__item:hover {
  border-color: var(--vp-c-brand);
}

.doc-nav__item--next {
  text-align: right;
}

.doc-nav__label {
  display: block;
  font-size: 12px;
  color: var(--vp-c-text-3);
}

.doc-nav__title {
  display: block;
  margin-top: 4px;
  font-size: 15px;
  font-weight: 600;
  color: var(--vp-c-brand);
}

/* ---------- 页脚 ---------- */
.footer {
  padding: 32px 0;
  margin-top: 32px;
  border-top: 1px solid var(--vp-c-divider);
  background-color: var(--vp-c-bg-alt);
}

.footer__inner {
  max-width: var(--vp-layout-max-width);
  margin: 0 auto;
  padding: 0 24px;
  text-align: center;
}

.footer__message {
  margin: 0 0 8px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--vp-c-text-2);
}

.footer__copyright {
  margin: 0;
  font-size: 13px;
  color: var(--vp-c-text-3);
}

/* ---------- 返回顶部 ---------- */
.back-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 60;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: var(--vp-c-text-2);
  background-color: var(--vp-c-bg-elv);
  border: 1px solid var(--vp-c-divider);
  border-radius: 50%;
  box-shadow: var(--vp-shadow-1);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s, visibility 0.25s;
}

.back-top.is-visible {
  opacity: 1;
  visibility: visible;
}

.back-top:hover {
  color: var(--vp-c-brand);
  border-color: var(--vp-c-brand);
}

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .nav__menu {
    display: none;
  }

  .nav__menu.is-open {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    padding: 8px 16px 12px;
    background-color: var(--vp-c-bg-elv);
    border-top: 1px solid var(--vp-c-divider);
    box-shadow: var(--vp-shadow-3);
  }

  .nav__menu.is-open .nav__link {
    padding: 12px 8px;
    border-radius: 6px;
  }

  .nav__toggle {
    display: flex;
  }

  .layout {
    display: block;
    padding: 0 16px;
  }

  .sidebar {
    position: static;
    width: 100%;
    max-height: none;
    padding: 16px 0;
    border-right: none;
    border-bottom: 1px solid var(--vp-c-divider);
  }

  .sidebar__list {
    display: flex;
    flex-wrap: wrap;
    gap: 4px 12px;
  }

  .sidebar__link {
    padding-left: 0;
    margin-left: 0;
    border-left: none;
  }

  .content {
    padding: 24px 0 48px;
  }

  .hero__name {
    font-size: 36px;
  }

  .hero__text {
    font-size: 28px;
  }
}

@media (max-width: 640px) {
  .container {
    padding: 0 16px;
  }

  .hero {
    padding: 40px 0 32px;
  }

  .hero__name {
    font-size: 30px;
  }

  .hero__text {
    font-size: 22px;
  }

  .hero__tagline {
    font-size: 16px;
  }

  .hero__image {
    display: none;
  }

  .doc h1 {
    font-size: 26px;
  }

  .doc h2 {
    font-size: 20px;
  }

  .features {
    grid-template-columns: 1fr;
  }
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0 0 12px;
  font-size: 13px;
  color: var(--vp-c-text-3);
}

.breadcrumb a {
  color: var(--vp-c-text-3);
}

.breadcrumb a:hover {
  color: var(--vp-c-brand);
}

.breadcrumb__sep {
  color: var(--vp-c-text-3);
}

/* ---------- 本页大纲 ---------- */
.doc__aside {
  flex: 0 0 208px;
  width: 208px;
  position: sticky;
  top: var(--vp-nav-height);
  max-height: calc(100vh - var(--vp-nav-height));
  padding: 32px 0 64px 24px;
  overflow-y: auto;
}

.outline__title {
  margin: 0 0 10px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--vp-c-text-2);
}

.outline__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-left: 1px solid var(--vp-c-divider);
}

.outline__link {
  display: block;
  padding: 5px 0 5px 12px;
  margin-left: -1px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--vp-c-text-2);
  border-left: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.outline__link:hover {
  color: var(--vp-c-text-1);
}

.outline__link.is-active {
  color: var(--vp-c-brand);
  border-left-color: var(--vp-c-brand);
  font-weight: 600;
}

.outline__link--h3 {
  padding-left: 24px;
  font-size: 12.5px;
}

@media (max-width: 1200px) {
  .doc__aside {
    display: none;
  }
}

/* ---------- 相关阅读 ---------- */
.related {
  margin-top: 44px;
  padding-top: 24px;
  border-top: 1px solid var(--vp-c-divider-soft);
}

.related__title {
  margin: 0 0 14px;
  font-size: 15px;
  font-weight: 600;
  color: var(--vp-c-text-1);
}

.related__list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.related__link {
  padding: 7px 14px;
  font-size: 13px;
  color: var(--vp-c-text-2);
  background-color: var(--vp-c-bg-soft);
  border: 1px solid var(--vp-c-divider);
  border-radius: 999px;
  transition: color 0.2s, border-color 0.2s, background-color 0.2s;
}

.related__link:hover {
  color: var(--vp-c-brand);
  border-color: var(--vp-c-brand);
  background-color: var(--vp-c-brand-soft);
}

/* ---------- 代码块与复制按钮 ---------- */
.doc pre {
  position: relative;
}

.code-copy {
  position: absolute;
  top: 8px;
  right: 8px;
  padding: 4px 10px;
  font-family: inherit;
  font-size: 12px;
  color: var(--vp-c-text-3);
  background-color: var(--vp-c-bg-elv);
  border: 1px solid var(--vp-c-divider);
  border-radius: 6px;
  opacity: 0;
  transition: opacity 0.2s, color 0.2s, border-color 0.2s;
}

.doc pre:hover .code-copy {
  opacity: 1;
}

.code-copy:hover {
  color: var(--vp-c-brand);
  border-color: var(--vp-c-brand);
}

.code-copy.is-copied {
  color: var(--vp-c-brand);
  border-color: var(--vp-c-brand);
  opacity: 1;
}

/* ---------- 标题锚点 ---------- */
.doc h2,
.doc h3 {
  position: relative;
}

.doc .header-anchor {
  position: absolute;
  left: -20px;
  padding-right: 4px;
  font-weight: 400;
  color: var(--vp-c-brand);
  opacity: 0;
  transition: opacity 0.2s;
}

.doc h2:hover .header-anchor,
.doc h3:hover .header-anchor {
  opacity: 1;
}

/* ---------- 滚动揭示动画 ---------- */
/* 入场动画：只在 JS 可用（html.js）时启用。
   若脚本未执行，元素保持默认可见，不会因 opacity:0 导致内容消失 */
.js .reveal {
  opacity: 0;
  transform: translateY(14px);
}

.js .reveal.is-in {
  opacity: 1;
  transform: none;
  transition: opacity 0.5s ease, transform 0.5s ease;
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
  }

  html {
    scroll-behavior: auto;
  }
}

/* ---------- 首页友情链接区块 ---------- */
.links {
  max-width: 1152px;
  margin: 0 auto;
  padding: 8px 24px 64px;
}

.links__title {
  margin: 0 0 16px;
  font-size: 15px;
  font-weight: 600;
  color: var(--vp-c-text-1);
}

.links__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 10px;
}

.links__grid a {
  display: block;
  padding: 10px 14px;
  font-size: 13px;
  text-align: center;
  color: var(--vp-c-text-2);
  background-color: var(--vp-c-bg-elv);
  border: 1px solid var(--vp-c-divider);
  border-radius: var(--radius-sm);
  transition: color 0.2s, border-color 0.2s, transform 0.2s;
}

.links__grid a:hover  {
  color: var(--vp-c-brand);
  border-color: var(--vp-c-brand);
  transform: translateY(-1px);
}

/* ===== 靠谱机场卡片 ===== */
.airports{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin:16px 0;}
.airport{border:1px solid var(--vp-c-divider);border-radius:var(--radius);padding:18px 20px;background:var(--vp-c-bg-elv);transition:box-shadow .2s,transform .2s,border-color .25s;}
.airport:hover{box-shadow:var(--vp-shadow-3);transform:translateY(-2px);border-color:var(--vp-c-brand);}
.airport a{display:block;text-decoration:none;color:inherit;}
.airport h3{margin:0 0 6px;font-size:17px;color:var(--vp-c-brand);}
.airport p{margin:0;font-size:14px;color:var(--vp-c-text-2);}