/* 顶部文字 tab。面板的 hidden 状态由 tabs.js 管理。 */
.tabs { min-width: 0; }
.tabs__list, [role="tablist"].tab-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 36px;
  margin: 0 0 32px;
  padding: 0;
  border-bottom: 1px solid var(--c-line);
}
.tabs__tab {
  appearance: none;
  position: relative;
  min-height: 48px;
  padding: 12px 0 16px;
  border: 0;
  border-bottom: 2px solid var(--c-clear);
  background: var(--c-clear);
  color: var(--c-ink-soft);
  font-weight: var(--weight-normal);
  line-height: 1.5;
}
.tabs__tab:hover { color: var(--c-ink); }
.tabs__tab[aria-selected="true"] { color: var(--c-brick); font-weight: var(--weight-medium); border-bottom-color: var(--c-brick); }
.tabs__panel { min-width: 0; }
.feature-detail { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); border: 1px solid var(--c-line); border-radius: var(--r-stage); overflow: hidden; background: var(--c-bg); color: var(--c-ink); }
.feature-detail__copy { padding: 48px 40px; min-width: 0; }
.feature-detail__copy h3 { margin: 0 0 24px; font-weight: var(--weight-normal); }
.feature-detail__copy p { line-height: 1.9; color: var(--c-ink-soft); margin-bottom: 28px; }
.feature-detail__visual {
  position: relative;
  min-width: 0;
  min-height: 420px;
  padding: 64px 32px 88px;
  background: var(--c-brick);
  color: var(--on-brick);
  overflow: hidden;
  isolation: isolate;
}
.feature-detail__underlay { position: absolute; inset: auto 24px 32px 64px; min-height: 116px; padding: 64px 20px 16px; border: 1px solid var(--glass-edge); border-radius: var(--r-card); background: var(--glass-back); color: var(--on-brick); font-size: 12px; }
.feature-detail__code { position: relative; margin: 0 24px 0 0; padding: 24px; border: 1px solid var(--glass-edge); border-radius: var(--r-card); background: var(--glass-front); color: var(--on-brick); font-size: 12px; line-height: 1.8; -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); }
.field-name { color: var(--c-link); font-family: var(--font-mono); }

/* 目录的直接父元素须覆盖全部章节。短父容器请使用非吸顶变体。 */
.toc { position: sticky; top: 0; z-index: 10; margin-bottom: 40px; padding: 12px 16px; border: 1px solid var(--c-line); border-radius: var(--r-btn); background: var(--c-bg); color: var(--c-ink); }
.toc--flow { position: static; }
.toc__list { display: flex; flex-wrap: wrap; gap: 4px 20px; list-style: none; margin: 0; padding: 0; }
.toc a { display: inline-flex; align-items: center; min-height: 44px; color: var(--c-ink-soft); font-size: 14px; }
.toc a:hover, .toc a[aria-current="location"] { color: var(--c-brick); }

/* 原生折叠，无脚本可用。 */
.faq { border-top: 1px solid var(--c-line); }
.faq__item { border-bottom: 1px solid var(--c-line); padding-top: 0; padding-bottom: 0; }
.faq__item summary { position: relative; cursor: pointer; list-style: none; padding: 24px 36px 24px 0; font-size: 17px; font-weight: var(--weight-normal); }
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after { content: "+"; position: absolute; top: 24px; right: 4px; color: var(--c-ink-soft); }
.faq__item[open] summary::after { content: "−"; }
.faq__answer { padding-bottom: 24px; max-width: 72ch; color: var(--c-ink-soft); }
.faq__answer p:last-child { margin-bottom: 0; }

.term-card { min-width: 0; border: 1px solid var(--c-line); border-radius: var(--r-card); padding: 28px; background: var(--c-bg); color: var(--c-ink); }
.term-card__category { margin: 0 0 18px; color: var(--c-ink-soft); font-size: 12px; }
.term-card h3 { margin: 0 0 16px; }
.term-card p:last-child { margin-bottom: 0; }
.term-card__field { color: var(--c-link); font-family: var(--font-mono); overflow-wrap: anywhere; }

.badges { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.badge, .tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  max-width: 100%;
  min-width: 0;
  padding: 4px 10px;
  border: 1px solid var(--c-line);
  border-radius: var(--r-pill);
  background: var(--c-panel);
  color: var(--c-ink-soft);
  font-size: 12px;
  line-height: 1.5;
  overflow-wrap: anywhere;
}
.badge::before { content: ""; width: 5px; height: 5px; border-radius: var(--r-round); background: currentColor; flex: none; }
.badge--primary { background: var(--c-bg); color: var(--c-brick); border-color: var(--c-brick); }
.badge--recommended { background: var(--c-bg); color: var(--c-success-ink); }
.badge--retired { background: var(--c-panel); color: var(--c-warn-ink); }
.tag { font-family: var(--font-mono); }
.client-card { min-width: 0; padding: 36px; border: 1px solid var(--c-line); border-radius: var(--r-card); background: var(--c-bg); color: var(--c-ink); }
.client-card__head { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; margin-bottom: 24px; }
.client-card__icon { width: 56px; height: 56px; flex-shrink: 0; }
.client-card__title { margin: 0; font-size: 26px; }
.client-card__meta { color: var(--c-ink-soft); font-size: 13px; margin-top: 6px; margin-bottom: 0; }
.client-card__body { color: var(--c-ink-soft); }
.client-card__links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.client-card__foot { margin: 24px 0 0; font-size: 13px; color: var(--c-ink-soft); }
.article-card { display: flex; flex-direction: column; align-items: flex-start; min-width: 0; padding: 32px; border: 1px solid var(--c-line); border-radius: var(--r-card); background: var(--c-bg); color: var(--c-ink); }
.article-card__meta { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; font-size: 12px; color: var(--c-ink-soft); }
.article-card h3 { margin: 24px 0 16px; font-size: 21px; line-height: 1.5; }
.article-card h3 a:hover { text-decoration: underline; text-underline-offset: 5px; }
.article-card__summary { color: var(--c-ink-soft); line-height: 1.8; }
.article-card__more { margin-top: auto; padding-top: 16px; color: var(--c-link); font-size: 14px; }
.callout { margin: 28px 0; padding: 24px 28px; border: 1px solid var(--c-line); border-left: 3px solid var(--c-brick); border-radius: var(--r-btn); background: var(--c-panel); color: var(--c-ink); }
.callout__title { display: block; margin-bottom: 8px; font-weight: var(--weight-medium); }
.callout p:last-child { margin-bottom: 0; }
.callout--warning { border-left-color: var(--c-warn); }
.callout--success { border-left-color: var(--c-success); }
.callout--error { border-left-color: var(--c-error); }

/* 外包横滑容器与裸表格双重兜底。 */
.table-scroll { width: 100%; max-width: 100%; min-width: 0; overflow-x: auto; -webkit-overflow-scrolling: touch; border: 1px solid var(--c-line); border-radius: var(--r-btn); }
.data-table { width: 100%; border-collapse: collapse; text-align: left; font-size: 14px; }
.data-table caption { text-align: left; padding: 16px; color: var(--c-ink-soft); }
.data-table th, .data-table td, .prose table th, .prose table td {
  min-width: 7em;
  padding: 16px 20px;
  border-bottom: 1px solid var(--c-line);
  vertical-align: top;
  overflow-wrap: normal;
  word-break: normal;
  white-space: normal;
}
.data-table th, .prose table th { font-weight: var(--weight-medium); background: var(--c-panel); color: var(--c-ink); }
.data-table td, .prose table td { background: var(--c-bg); color: var(--c-ink); }
.data-table tr:last-child td { border-bottom: 0; }
.prose table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; max-width: 100%; min-width: 0; border-collapse: collapse; margin-top: 24px; margin-bottom: 32px; }
.data-table code, .prose table code { overflow-wrap: anywhere; }

/* 仅博客文章页使用；主页面不挂载此浮层。 */
.dl-fab { position: fixed; right: max(20px, env(safe-area-inset-right)); bottom: max(20px, env(safe-area-inset-bottom)); z-index: var(--layer-fab); display: inline-flex; align-items: center; gap: 12px; max-width: calc(100vw - 40px); min-height: 56px; padding: 12px 20px; border: 1px solid var(--c-brick); border-radius: var(--r-btn); background: var(--c-brick); color: var(--on-brick); font-size: 14px; font-weight: var(--weight-medium); }
.dl-fab svg { width: 20px; height: 20px; flex: none; }
.dl-fab:hover { background: var(--c-brick-deep); color: var(--on-brick); border-color: var(--c-brick-deep); }
.article-download { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 24px; margin-top: 56px; padding: 32px; border: 1px solid var(--c-line); border-radius: var(--r-card); background: var(--c-panel); color: var(--c-ink); }
.article-download__copy { flex: 1 1 260px; min-width: 0; }
.article-download__copy h2 { font-size: 24px; margin: 0 0 12px; }
.article-download__copy p { margin: 0; color: var(--c-ink-soft); font-size: 15px; }
.article-download .btn { flex-shrink: 0; }
body.has-article-fab .site-footer { padding-bottom: 88px; }

@media (max-width: 900px) {
  .feature-detail { grid-template-columns: minmax(0, 1fr); }
  .feature-detail__copy { padding: 32px; }
  .feature-detail__visual { min-height: 340px; }
}
@media (max-width: 640px) {
  .tabs__list { gap: 4px 24px; margin-bottom: 24px; }
  .tabs__tab { font-size: 14px; }
  .feature-detail__copy { padding: 24px; }
  .feature-detail__visual { padding: 36px 16px 88px; }
  .feature-detail__code { padding: 18px; margin-right: 12px; font-size: 11px; }
  .feature-detail__underlay { left: 32px; right: 16px; }
  .client-card, .term-card, .article-card { padding: 24px; }
  .client-card__links .btn { flex: 1 1 180px; }
  .callout { padding: 20px; }
  .dl-fab { right: max(16px, env(safe-area-inset-right)); bottom: max(16px, env(safe-area-inset-bottom)); max-width: calc(100vw - 32px); padding: 12px 16px; }
  .article-download { padding: 24px; }
  .toc { position: static; }
}