/* PCL.PW 文档：与官网共用 Material 3 配色（种子色 #1370F3）和字体 */
:root {
  --md-sys-color-primary: #1b5fc8;
  --md-sys-color-on-primary: #ffffff;
  --md-sys-color-primary-container: #d8e2ff;
  --md-sys-color-on-primary-container: #001a41;
  --md-sys-color-secondary-container: #dbe2f9;
  --md-sys-color-on-secondary-container: #141b2c;
  --md-sys-color-tertiary-container: #fbd7fc;
  --md-sys-color-on-tertiary-container: #29132d;
  --md-sys-color-surface: #faf8ff;
  --md-sys-color-surface-container-lowest: #ffffff;
  --md-sys-color-surface-container-low: #f3f3fa;
  --md-sys-color-surface-container: #edeef4;
  --md-sys-color-surface-container-high: #e7e8ee;
  --md-sys-color-on-surface: #191b20;
  --md-sys-color-on-surface-variant: #44474f;
  --md-sys-color-outline: #74777f;
  --md-sys-color-outline-variant: #c4c6d0;
  --md-sys-color-error: #ba1a1a;
  --md-elevation-1: 0 1px 2px rgb(0 0 0 / .30), 0 1px 3px 1px rgb(0 0 0 / .15);
  --md-motion: 200ms cubic-bezier(.2, 0, 0, 1);
}
@media (prefers-color-scheme: dark) {
  :root {
    --md-sys-color-primary: #adc6ff;
    --md-sys-color-on-primary: #002e69;
    --md-sys-color-primary-container: #004493;
    --md-sys-color-on-primary-container: #d8e2ff;
    --md-sys-color-secondary-container: #404659;
    --md-sys-color-on-secondary-container: #dbe2f9;
    --md-sys-color-tertiary-container: #593e5c;
    --md-sys-color-on-tertiary-container: #fbd7fc;
    --md-sys-color-surface: #111318;
    --md-sys-color-surface-container-lowest: #0c0e13;
    --md-sys-color-surface-container-low: #191b20;
    --md-sys-color-surface-container: #1d2024;
    --md-sys-color-surface-container-high: #282a2f;
    --md-sys-color-on-surface: #e1e2e9;
    --md-sys-color-on-surface-variant: #c4c6d0;
    --md-sys-color-outline: #8e9099;
    --md-sys-color-outline-variant: #44474f;
    --md-sys-color-error: #ffb4ab;
    --md-elevation-1: 0 1px 2px rgb(0 0 0 / .30), 0 1px 3px 1px rgb(0 0 0 / .15);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; scrollbar-gutter: stable; overflow-x: clip; }
body {
  margin: 0;
  background: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
  font-family: Roboto, "Noto Sans SC", system-ui, sans-serif;
  font-size: 16px; line-height: 24px; letter-spacing: .5px;
  -webkit-font-smoothing: antialiased;
  overflow-wrap: anywhere; overflow-x: clip;
}
a { color: var(--md-sys-color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }
.icon {
  font-family: "Material Symbols Rounded";
  font-weight: normal; font-style: normal; font-size: 24px; line-height: 1;
  letter-spacing: normal; text-transform: none; white-space: nowrap;
  display: inline-block; flex: none; direction: ltr;
  font-feature-settings: "liga"; -webkit-font-smoothing: antialiased;
  user-select: none; width: 1em; overflow: hidden;
}
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ---------- 顶部应用栏 ---------- */
.app-bar {
  position: sticky; top: 0; z-index: 30;
  background: var(--md-sys-color-surface);
  transition: background-color var(--md-motion), box-shadow var(--md-motion);
}
.app-bar.scrolled { background: var(--md-sys-color-surface-container); box-shadow: var(--md-elevation-1); }
.app-bar .wrap { display: flex; align-items: center; height: 64px; gap: 8px; }
.brand {
  display: flex; align-items: center; gap: 12px; min-width: 0;
  color: var(--md-sys-color-on-surface); border-radius: 9999px; padding: 4px 12px 4px 0;
  font-size: 22px; line-height: 28px;
}
.brand:hover { text-decoration: none; }
.brand img { width: 32px; height: 32px; border-radius: 8px; flex: none; }
.app-bar nav { margin-left: auto; display: flex; gap: 4px; align-items: center; }

.btn {
  position: relative; overflow: hidden; isolation: isolate;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 40px; padding: 0 24px; border: 0; border-radius: 9999px;
  font-family: inherit; font-size: 14px; line-height: 20px; font-weight: 500;
  letter-spacing: .1px; cursor: pointer; text-decoration: none; color: var(--md-sys-color-primary);
  background: transparent; transition: box-shadow var(--md-motion);
}
.btn:hover { text-decoration: none; }
.btn::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: currentColor; opacity: 0; transition: opacity var(--md-motion);
}
.btn:hover::after { opacity: .08; }
.btn:focus-visible::after { opacity: .10; }
.btn:active::after { opacity: .12; }
.btn:focus-visible { outline: 3px solid var(--md-sys-color-primary); outline-offset: 2px; }
.btn.text { padding: 0 12px; }
.icon-btn {
  width: 40px; height: 40px; border: 0; border-radius: 9999px; background: transparent;
  color: var(--md-sys-color-on-surface-variant); cursor: pointer;
  display: none; place-items: center; flex: none;
}
.icon-btn:hover { background: var(--md-sys-color-surface-container); }
.icon-btn:focus-visible { outline: 3px solid var(--md-sys-color-primary); outline-offset: 2px; }

/* ---------- 文档布局 ---------- */
.shell {
  display: flex; gap: 40px; align-items: flex-start;
  max-width: 1200px; margin: 0 auto; padding: 24px 24px 48px;
}
.sidebar {
  position: sticky; top: 80px; flex: 0 0 232px;
  max-height: calc(100vh - 104px); overflow-y: auto; padding: 0 0 24px;
}
.sidebar .group + .group { margin-top: 20px; }
.sidebar .group-title {
  padding: 8px 12px; color: var(--md-sys-color-on-surface-variant);
  font-size: 12px; line-height: 16px; letter-spacing: .5px; font-weight: 500;
}
.sidebar a {
  display: block; padding: 8px 12px; border-radius: 9999px;
  color: var(--md-sys-color-on-surface-variant);
  font-size: 14px; line-height: 20px; letter-spacing: .25px;
}
.sidebar a:hover { background: var(--md-sys-color-surface-container); text-decoration: none; }
.sidebar a:focus-visible { outline: 3px solid var(--md-sys-color-primary); outline-offset: -3px; }
.sidebar a.active {
  background: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container); font-weight: 500;
}
.content { flex: 1; min-width: 0; max-width: 840px; }
.scrim { display: none; }

/* ---------- 可展开的问答 ---------- */
details {
  margin: 0 0 10px; padding: 0 16px;
  border: 1px solid var(--md-sys-color-outline-variant); border-radius: 12px;
  background: var(--md-sys-color-surface-container-low);
}
summary {
  position: relative; padding: 12px 28px 12px 0; cursor: pointer;
  font-weight: 500; list-style: none;
}
summary::-webkit-details-marker { display: none; }
summary::after {
  content: "expand_more";
  font-family: "Material Symbols Rounded"; font-size: 20px; line-height: 1;
  position: absolute; right: 0; top: 14px;
  color: var(--md-sys-color-on-surface-variant);
  transition: transform var(--md-motion);
}
details[open] summary::after { transform: rotate(180deg); }
details p { margin: 0 0 12px; color: var(--md-sys-color-on-surface-variant); }

/* ---------- 搜索 ---------- */
.search {
  position: relative; display: flex; align-items: center; gap: 8px;
  height: 44px; margin: 0 0 20px; padding: 0 14px;
  border-radius: 9999px;
  background: var(--md-sys-color-surface-container-low);
  border: 1px solid var(--md-sys-color-outline-variant);
  transition: border-color var(--md-motion), background-color var(--md-motion);
}
.search:focus-within { border-color: var(--md-sys-color-primary); background: var(--md-sys-color-surface-container-lowest); }
.search .icon { font-size: 20px; color: var(--md-sys-color-on-surface-variant); }
.search input {
  flex: 1; min-width: 0; height: 100%; border: 0; outline: 0; background: transparent;
  font-family: inherit; font-size: 14px; line-height: 20px; letter-spacing: .25px;
  color: var(--md-sys-color-on-surface);
}
.search input::placeholder { color: var(--md-sys-color-on-surface-variant); }
.search input::-webkit-search-cancel-button { cursor: pointer; }
.search-results { margin: -8px 0 16px; }
.search-results a {
  display: block; padding: 10px 12px; margin-bottom: 4px; border-radius: 12px;
  color: var(--md-sys-color-on-surface);
}
.search-results a:hover { background: var(--md-sys-color-surface-container); text-decoration: none; }
.search-results a:focus-visible { outline: 3px solid var(--md-sys-color-primary); outline-offset: -3px; }
.search-results .t {
  display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 2; overflow: hidden;
  color: var(--md-sys-color-primary);
  font-size: 14px; line-height: 20px; font-weight: 500;
}
.search-results .m {
  display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 3; overflow: hidden;
  margin-top: 2px;
  color: var(--md-sys-color-on-surface-variant);
  font-size: 12px; line-height: 17px;
}
.search-results mark {
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  border-radius: 4px; padding: 0 2px;
}
.search-empty { padding: 8px 12px; color: var(--md-sys-color-on-surface-variant); font-size: 13px; line-height: 18px; }
body.searching .sidebar .group { display: none; }
article h2:target, article h3:target {
  animation: md-flash 2.4s var(--md-motion) 1;
  border-radius: 6px;
}
@keyframes md-flash {
  from { background: var(--md-sys-color-primary-container); }
  to { background: transparent; }
}

/* ---------- 正文 ---------- */
article { padding-bottom: 8px; }
.crumbs { color: var(--md-sys-color-on-surface-variant); font-size: 12px; line-height: 16px; margin-bottom: 8px; }
article h1 { margin: 0 0 8px; font-size: 32px; line-height: 40px; font-weight: 400; letter-spacing: 0; }
article h2 { margin: 40px 0 12px; font-size: 24px; line-height: 32px; font-weight: 400; letter-spacing: 0; }
article h3 { margin: 28px 0 8px; font-size: 18px; line-height: 26px; font-weight: 500; letter-spacing: .15px; }
article h2, article h3 { scroll-margin-top: 88px; }
article p { margin: 0 0 16px; }
article .lead { margin: 0 0 24px; color: var(--md-sys-color-on-surface-variant); font-size: 16px; line-height: 24px; }
article ul, article ol { margin: 0 0 16px; padding-left: 24px; }
article li + li { margin-top: 6px; }
article li > ul, article li > ol { margin: 6px 0 0; }
article hr { border: 0; border-top: 1px solid var(--md-sys-color-outline-variant); margin: 32px 0; }
strong { font-weight: 500; }
code {
  font-family: ui-monospace, Consolas, "Courier New", monospace;
  font-size: .875em; letter-spacing: 0;
  background: var(--md-sys-color-surface-container);
  padding: 2px 6px; border-radius: 6px;
}
pre {
  margin: 0 0 20px; padding: 16px; overflow: auto;
  background: var(--md-sys-color-surface-container-low);
  border: 1px solid var(--md-sys-color-outline-variant); border-radius: 12px;
  font-size: 14px; line-height: 22px;
}
pre code { background: none; padding: 0; font-size: inherit; }
kbd {
  font-family: inherit; font-size: 12px; line-height: 16px; font-weight: 500;
  border: 1px solid var(--md-sys-color-outline); border-bottom-width: 2px;
  border-radius: 6px; padding: 0 6px; background: var(--md-sys-color-surface-container-lowest);
}
.table-wrap {
  margin: 0 0 20px; overflow-x: auto;
  border: 1px solid var(--md-sys-color-outline-variant); border-radius: 12px;
}
table { width: 100%; min-width: 520px; border-collapse: collapse; font-size: 14px; line-height: 20px; letter-spacing: .25px; }
th, td { padding: 10px 14px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--md-sys-color-outline-variant); }
tbody tr:last-child td { border-bottom: 0; }
th { background: var(--md-sys-color-surface-container-low); font-weight: 500; white-space: nowrap; }
td code, th code { white-space: nowrap; }

.callout {
  display: flex; gap: 12px; align-items: flex-start;
  margin: 0 0 20px; padding: 16px 20px; border-radius: 16px;
  background: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
}
.callout.warn { background: var(--md-sys-color-tertiary-container); color: var(--md-sys-color-on-tertiary-container); }
.callout > .icon { margin-top: 1px; font-size: 22px; }
.callout .body { min-width: 0; }
.callout p { margin: 0; }
.callout p + p { margin-top: 8px; }
.callout a { color: inherit; text-decoration: underline; }
.callout code { background: rgb(0 0 0 / .08); }
@media (prefers-color-scheme: dark) { .callout code { background: rgb(255 255 255 / .12); } }

/* ---------- 首页卡片 ---------- */
.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin: 0 0 24px; }
.card {
  display: flex; flex-direction: column; gap: 8px;
  padding: 20px; border-radius: 16px;
  background: var(--md-sys-color-surface-container-low);
  border: 1px solid var(--md-sys-color-outline-variant);
  color: var(--md-sys-color-on-surface);
  transition: box-shadow var(--md-motion), transform var(--md-motion);
}
.card:hover { text-decoration: none; box-shadow: var(--md-elevation-1); transform: translateY(-2px); }
.card .icon {
  width: 40px; height: 40px; font-size: 22px; border-radius: 12px;
  display: grid; place-items: center;
  background: var(--md-sys-color-primary-container); color: var(--md-sys-color-on-primary-container);
}
.card .t { font-size: 16px; line-height: 24px; font-weight: 500; }
.card .d { color: var(--md-sys-color-on-surface-variant); font-size: 14px; line-height: 20px; }

/* ---------- 图标素材 ---------- */
.icon-filter {
  display: flex; align-items: center; gap: 8px;
  height: 44px; max-width: 360px; margin: 0 0 20px; padding: 0 14px;
  border-radius: 9999px;
  background: var(--md-sys-color-surface-container-low);
  border: 1px solid var(--md-sys-color-outline-variant);
}
.icon-filter:focus-within { border-color: var(--md-sys-color-primary); }
.icon-filter .icon { font-size: 20px; color: var(--md-sys-color-on-surface-variant); }
.icon-filter input {
  flex: 1; min-width: 0; height: 100%; border: 0; outline: 0; background: transparent;
  font-family: inherit; font-size: 14px; color: var(--md-sys-color-on-surface);
}
.icon-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(122px, 1fr));
  gap: 10px; margin: 0 0 28px;
}
.icon-card {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  padding: 14px 8px; border-radius: 12px; text-align: center;
  background: var(--md-sys-color-surface-container-low);
  border: 1px solid var(--md-sys-color-outline-variant);
  color: var(--md-sys-color-on-surface);
}
.icon-card:hover { background: var(--md-sys-color-surface-container); text-decoration: none; }
.icon-card:focus-visible { outline: 3px solid var(--md-sys-color-primary); outline-offset: 2px; }
.icon-card img { width: 28px; height: 28px; }
.icon-name { font-size: 12px; line-height: 16px; font-weight: 500; overflow-wrap: anywhere; }
.icon-file {
  color: var(--md-sys-color-on-surface-variant);
  font-size: 10px; line-height: 14px; overflow-wrap: anywhere;
}
@media (prefers-color-scheme: dark) {
  .icon-card.mono img { filter: invert(1); }
}

/* ---------- 上一页 / 下一页 ---------- */
.pager {
  display: flex; gap: 12px; margin-top: 48px; padding-top: 24px;
  border-top: 1px solid var(--md-sys-color-outline-variant);
}
.pager a {
  flex: 1; min-width: 0; padding: 12px 16px; border-radius: 16px;
  border: 1px solid var(--md-sys-color-outline-variant);
  color: var(--md-sys-color-on-surface);
  transition: background-color var(--md-motion);
}
.pager a:hover { background: var(--md-sys-color-surface-container); text-decoration: none; }
.pager a.next { text-align: right; margin-left: auto; }
.pager a:only-child { flex: 0 1 320px; }
.pager .dir { display: block; color: var(--md-sys-color-on-surface-variant); font-size: 12px; line-height: 16px; }
.pager .t { font-size: 14px; line-height: 20px; font-weight: 500; }

footer {
  border-top: 1px solid var(--md-sys-color-outline-variant);
  padding: 24px 0 40px; text-align: center;
  color: var(--md-sys-color-on-surface-variant); font-size: 12px; line-height: 16px;
}
footer p { margin: 0; }
footer p + p { margin-top: 4px; }

/* ---------- 响应式 ---------- */
@media (max-width: 899px) {
  .icon-btn { display: grid; }
  .app-bar nav .opt { display: none; }
  .shell { padding: 16px 16px 40px; }
  .sidebar {
    position: fixed; top: 64px; bottom: 0; left: 0; z-index: 25;
    width: min(288px, 82vw); max-height: none; padding: 16px 12px 32px;
    background: var(--md-sys-color-surface-container-low);
    border-right: 1px solid var(--md-sys-color-outline-variant);
    transform: translateX(-100%); transition: transform var(--md-motion);
  }
  body.nav-open .sidebar { transform: none; }
  body.nav-open .scrim {
    display: block; position: fixed; inset: 64px 0 0; z-index: 24;
    background: rgb(0 0 0 / .32);
  }
  body.nav-open { overflow: hidden; }
}
@media (max-width: 599px) {
  .wrap { padding: 0 16px; }
  .brand { font-size: 18px; line-height: 24px; }
  article h1 { font-size: 26px; line-height: 34px; }
  article h2 { font-size: 22px; line-height: 30px; margin-top: 32px; }
  .cards { grid-template-columns: minmax(0, 1fr); }
  .pager { flex-direction: column; }
  .pager a.next { text-align: left; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}