:host {
  display: block;
  color: var(--md-sys-color-on-surface);
  font-family: "Inter", "SF Pro Text", -apple-system, BlinkMacSystemFont, "Segoe UI",
    system-ui, "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  line-height: 1.65;
}
*, *::before, *::after { box-sizing: border-box; }
h1, h2, h3, p, pre { margin: 0; }
a { color: inherit; }
code { font-family: ui-monospace, Menlo, monospace; }

.doc-page { max-width: 860px; padding: 6px 0 64px; }

.doc-hero {
  padding: 18px 0 24px;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
}
.doc-kicker {
  color: var(--md-sys-color-primary);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.doc-hero h1 {
  margin-top: 8px;
  font-size: clamp(30px, 4vw, 42px);
  line-height: 1.08;
  letter-spacing: -0.04em;
  font-weight: 800;
}
.doc-hero h1 code {
  display: inline-block;
  margin-left: 8px;
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface-variant);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0;
  vertical-align: middle;
}
.doc-lead {
  max-width: 720px;
  margin-top: 14px;
  color: var(--md-sys-color-on-surface-variant);
  font-size: 14px;
  line-height: 1.75;
}
.doc-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}
.doc-links a {
  padding: 5px 11px;
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: 999px;
  color: var(--md-sys-color-on-surface-variant);
  font-size: 11px;
  text-decoration: none;
}
.doc-links a:hover {
  border-color: var(--md-sys-color-outline);
  color: var(--md-sys-color-on-surface);
  background: var(--md-sys-color-surface-container-low);
}

.demo {
  margin-top: 22px;
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--st-card-radius, 16px);
  /* 不裁剪：下拉/菜单等弹层需要溢出示例容器，否则会被按容器高度截断。
     圆角由内部 .demo-top / .demo-stage / .demo-content 自己收口。 */
  overflow: visible;
  /* 示例容器只做透明外壳，本身不加毛玻璃：父级的 backdrop-filter 会预先模糊背景，
     让示例里组件自己的毛玻璃看不出效果。透明底让组件材质直接叠在环境光上。 */
  background: transparent;
}
.demo-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  border-radius: calc(var(--st-card-radius, 16px) - 1px) calc(var(--st-card-radius, 16px) - 1px) 0 0;
  background: rgb(from var(--md-sys-color-surface-container-low) r g b / 0.5);
}
.demo-top code { color: var(--md-sys-color-on-surface-variant); font-size: 10px; }
.live {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--md-sys-color-on-surface-variant);
}
.live i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--md-sys-color-success);
}
.demo-stage {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 160px;
  padding: 30px 24px;
  border-radius: 0 0 calc(var(--st-card-radius, 16px) - 1px) calc(var(--st-card-radius, 16px) - 1px);
  background-color: transparent;
  background-image: radial-gradient(
    circle at 1px 1px,
    color-mix(in srgb, var(--md-sys-color-outline-variant) 68%, transparent) 1px,
    transparent 0
  );
  background-size: 16px 16px;
}
.demo-stage st-input,
.demo-stage st-textarea,
.demo-stage st-select { width: 100%; max-width: 360px; }
.demo-stage st-snackbar { position: static; width: 100%; max-width: 380px; }
.demo-stage st-tab-bar,
.demo-stage st-nav-bar { width: 100%; }
.demo-stage st-list { width: 100%; max-width: 440px; }
.demo-stage st-collapse { width: 100%; max-width: 400px; }
.demo-stage st-slider { width: 100%; max-width: 380px; }
.demo-result {
  width: 100%;
  text-align: center;
  color: var(--md-sys-color-on-surface-variant);
  font-family: ui-monospace, Menlo, monospace;
  font-size: 10.5px;
}
.demo-copy {
  margin: 0;
  padding: 10px 12px;
  border-radius: 10px;
  background: var(--md-sys-color-surface-container);
  color: var(--md-sys-color-on-surface-variant);
  font-size: 12px;
}
.ripple-demo {
  position: relative;
  display: grid;
  place-items: center;
  width: 250px;
  height: 82px;
  overflow: hidden;
  border-radius: 15px;
  background: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  cursor: pointer;
  user-select: none;
}
.tool-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 7px; }
.ctx-mini {
  width: 100%;
  max-width: 320px;
  padding: 9px 10px;
  border: 1px dashed var(--md-sys-color-outline);
  border-radius: 10px;
  color: var(--md-sys-color-on-surface-variant);
  font-size: 10.5px;
  text-align: center;
  cursor: context-menu;
  user-select: none;
}
.row { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 10px; }

.doc-cols {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
  gap: 22px;
  margin-top: 24px;
}
.doc-block { min-width: 0; }
.doc-block h3 {
  margin-bottom: 9px;
  color: var(--md-sys-color-on-surface-variant);
  font-size: 10.5px;
  letter-spacing: .1em;
  text-transform: uppercase;
}
.api {
  width: 100%;
  table-layout: fixed;
  border-collapse: collapse;
  font-size: 11.5px;
}
.api th, .api td {
  padding: 7px 8px;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  text-align: left;
  vertical-align: top;
  overflow-wrap: anywhere;
}
.api th {
  color: var(--md-sys-color-on-surface-variant);
  font-size: 9.5px;
  font-weight: 600;
  letter-spacing: .05em;
  text-transform: uppercase;
}
.api th:nth-child(1) { width: 21%; }
.api th:nth-child(2) { width: 30%; }
.api th:nth-child(3) { width: 16%; }
.api th:nth-child(4) { width: 33%; }
.api td code { color: var(--md-sys-color-primary); font-size: 10.5px; }
.api td:nth-child(3) { color: var(--md-sys-color-on-surface-variant); }
.api-list {
  margin: 0;
  padding-left: 16px;
  display: grid;
  gap: 7px;
  color: var(--md-sys-color-on-surface-variant);
  font-size: 11.5px;
  line-height: 1.65;
}
.api-list code { color: var(--md-sys-color-primary); font-size: .95em; }

.snippet { margin-top: 18px; border-top: 1px dashed var(--md-sys-color-outline-variant); }
.snippet summary {
  padding: 10px 0;
  color: var(--md-sys-color-on-surface-variant);
  font-size: 11.5px;
  cursor: pointer;
  user-select: none;
}
.snippet summary:hover { color: var(--md-sys-color-on-surface); }
.snippet pre {
  margin: 0 0 4px;
  padding: 16px 18px;
  overflow: auto;
  border-radius: 12px;
  background: rgb(from var(--md-sys-color-surface-container-highest) r g b / 0.5);
  color: var(--md-sys-color-on-surface);
  font-size: 11px;
  line-height: 1.7;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.doc-pager {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: 30px;
  padding-top: 18px;
  border-top: 1px solid var(--md-sys-color-outline-variant);
}
.pager-link {
  display: grid;
  gap: 2px;
  padding: 10px 13px;
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: 12px;
  color: var(--md-sys-color-on-surface);
  font-size: 12px;
  text-decoration: none;
}
.pager-link span {
  color: var(--md-sys-color-on-surface-variant);
  font-size: 9.5px;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.pager-link:hover {
  border-color: var(--md-sys-color-primary);
  background: var(--md-sys-color-surface-container-low);
}
.pager-next { margin-left: auto; text-align: right; }
.pager-empty { flex: 1; }

/* docs index */
.docs-index { max-width: 1000px; padding: 6px 0 64px; }
.docs-index .doc-hero h1 { font-size: clamp(32px, 4.4vw, 48px); }
.docs-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(255px, 1fr));
  gap: 14px;
  margin-top: 24px;
}
.docs-card {
  display: grid;
  align-content: start;
  gap: 7px;
  padding: 18px;
  border-radius: 18px;
  cursor: pointer;
}
.docs-card .cat {
  color: var(--md-sys-color-primary);
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.docs-card h2 { font-size: 16px; letter-spacing: -0.02em; }
.docs-card code {
  width: fit-content;
  padding: 2px 7px;
  border-radius: 999px;
  background: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface-variant);
  font-size: 9.5px;
}
.docs-card p {
  min-height: 3em;
  color: var(--md-sys-color-on-surface-variant);
  font-size: 11.5px;
  line-height: 1.6;
}
.docs-card .more {
  margin-top: 4px;
  color: var(--md-sys-color-primary);
  font-size: 11px;
}

@media (max-width: 800px) {
  .doc-cols { grid-template-columns: minmax(0, 1fr); }
  .doc-hero h1 code { display: block; margin: 8px 0 0; width: fit-content; }
}
@media (max-width: 700px) {
  .api { table-layout: auto; }
  .api thead { display: none; }
  .api tbody, .api tr, .api td { display: block; width: 100%; }
  .api tr { padding: 11px 0; border-bottom: 1px solid var(--md-sys-color-outline-variant); }
  .api td { border: 0; padding: 1px 0; }
  .api td:nth-child(1) { margin-bottom: 4px; font-size: 13px; }
  .api td:nth-child(2)::before { content: "类型："; }
  .api td:nth-child(3)::before { content: "默认："; }
  .api td:nth-child(4)::before { content: "说明："; }
  .api td:nth-child(2)::before,
  .api td:nth-child(3)::before,
  .api td:nth-child(4)::before {
    color: var(--md-sys-color-on-surface-variant);
    font-size: 10px;
  }
  .demo-stage { padding: 22px 14px; }
  .doc-pager { flex-direction: column; align-items: stretch; }
  .pager-next { text-align: left; }
}

/* docs shell：位于二级父页 docs/layout.html；侧栏只渲染一次，切组件时只替换 slot 里的正文 */
.docs-shell {
  display: grid;
  grid-template-columns: 232px minmax(0, 1fr);
  gap: clamp(24px, 3.5vw, 44px);
  max-width: 1240px;
  margin: 0 auto;
  padding: 18px clamp(20px, 4vw, 40px) 64px;
  align-items: start;
}
.docs-side {
  position: sticky;
  top: 16px;
  max-height: calc(100dvh - 110px);
  overflow: auto;
  padding-right: 6px;
}
.side-title {
  padding: 2px 10px 8px;
  color: var(--md-sys-color-on-surface-variant);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.side-group {
  margin: 14px 0 3px;
  padding: 0 10px;
  color: var(--md-sys-color-on-surface-variant);
  font-size: 9.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.docs-side st-list { gap: 1px; }
.docs-side st-list-item {
  font-size: 12px;
  border-radius: 9px;
}
.docs-side st-list-item.active {
  background: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
}
.docs-side st-list-item code[slot="suffix"] {
  color: var(--md-sys-color-on-surface-variant);
  font-size: 9px;
  opacity: 0.75;
  white-space: nowrap;
}
.docs-body { min-width: 0; }
.docs-picker {
  display: none;
  width: 100%;
  max-width: 360px;
  margin-bottom: 18px;
}
@media (max-width: 980px) {
  .docs-shell {
    display: block;
    padding-top: 12px;
  }
  .docs-side { display: none; }
  .docs-picker { display: block; }
}

/* 二级父页（docs/layout.html）：slot 外层必须是相对容器，
   否则离场页的 absolute 会相对视口定位，切换瞬间露出旧内容造成闪烁。 */
.docs-body {
  position: relative;
  min-width: 0;
}
::slotted(o-page) {
  display: block;
  min-height: 70vh;
  background: transparent;
  /* 切页动画（淡入 + 上移）统一在 app-config.js 的 pageAnime 里配置 */
}

/* 组件页内的用法分区 */
.doc-section {
  margin-top: 38px;
}
.doc-section:first-of-type {
  margin-top: 30px;
}
.doc-section > h2 {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 19px;
  line-height: 1.3;
  letter-spacing: -0.02em;
  font-weight: 700;
}
.doc-section > h2::before {
  content: "";
  width: 4px;
  height: 17px;
  border-radius: 999px;
  background: var(--md-sys-color-primary);
}
.doc-section-lead {
  margin-top: 7px;
  max-width: 720px;
  color: var(--md-sys-color-on-surface-variant);
  font-size: 12.5px;
  line-height: 1.75;
}
.doc-section .demo {
  margin-top: 14px;
}
.demo-stage.block {
  align-items: stretch;
  justify-content: flex-start;
}
.demo-stage.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  align-items: start;
  justify-content: stretch;
}
.demo-stage.grid > * {
  min-width: 0;
}
.demo-stage .demo-cell {
  display: grid;
  gap: 8px;
  align-content: start;
}
.demo-label {
  color: var(--md-sys-color-on-surface-variant);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.demo-note {
  width: 100%;
  color: var(--md-sys-color-on-surface-variant);
  font-size: 11px;
  line-height: 1.65;
  text-align: center;
}
.demo-content {
  display: grid;
  gap: 16px;
  width: 100%;
  padding: 26px 24px;
  border-radius: 0 0 calc(var(--st-card-radius, 16px) - 1px) calc(var(--st-card-radius, 16px) - 1px);
  background-color: transparent;
  background-image: radial-gradient(
    circle at 1px 1px,
    color-mix(in srgb, var(--md-sys-color-outline-variant) 68%, transparent) 1px,
    transparent 0
  );
  background-size: 16px 16px;
}
.demo-content > * { max-width: 100%; }
.demo-content .row { justify-content: flex-start; }
.doc-section .snippet { margin-top: 10px; border-top: 0; }
.doc-section .snippet summary { padding-top: 2px; }

/* 概览页的组件层级分组 */
.docs-group {
  margin-top: 34px;
}
.docs-group + .docs-group {
  margin-top: 46px;
  padding-top: 34px;
  border-top: 1px solid var(--md-sys-color-outline-variant);
}
.docs-group-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 28px;
}
.docs-group-kicker {
  color: var(--md-sys-color-primary);
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: 0.16em;
}
.docs-group-head h2 {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 5px;
  font-size: clamp(23px, 2.4vw, 29px);
  line-height: 1.15;
  letter-spacing: -0.035em;
  font-weight: 800;
}
.docs-group-head h2 span {
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface-variant);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0;
}
.docs-group-desc {
  max-width: 440px;
  padding-bottom: 3px;
  color: var(--md-sys-color-on-surface-variant);
  font-size: 12px;
  line-height: 1.7;
  text-align: right;
}
.docs-group .docs-cards {
  margin-top: 18px;
}
@media (max-width: 700px) {
  .docs-group-head {
    display: grid;
    gap: 9px;
  }
  .docs-group-desc {
    max-width: none;
    text-align: left;
  }
}