/* BabianPulse — Redis-doc style site (47_redis)
 * Brand: #DC2626 pulse red; surface: dark navy #0F1419 with light sidebar contrast on article pages.
 * Layout signatures (different from babianpeak 14_mdn / babiannest 09_prisma):
 *   - Default dark navy body, dense compact layout, tight line-height (1.55–1.6).
 *   - Header is a dark bar with a pill-shaped Search button (icon + label) instead of inline input.
 *   - "Try Binance" red CTA pill at top-right corner.
 *   - Card grids are wide rectangular cards with a tiny corner icon, title, one-line description.
 *   - Specialty: cards may include arrow-bullet sub-link list (→ item).
 *   - Article page sidebar has a LIGHT/white surface contrasting the dark main column,
 *     with the active item shown by red text + left red border bar (no background fill).
 *   - Right TOC ("On this page") is plain text-only with hairline left guide.
 *   - Code blocks have a top tab bar showing language label + copy button on the right.
 *   - Footer has 4 dense column groups (USE CASES / INDUSTRIES / COMPARE / COMPANY equivalents).
 */

:root {
  --pl-red: #DC2626;
  --pl-red-2: #B91C1C;
  --pl-red-3: #991B1B;
  --pl-red-tint: rgba(220, 38, 38, 0.12);
  --pl-red-line: rgba(220, 38, 38, 0.4);

  --pl-bg: #0F1419;
  --pl-bg-2: #161C24;
  --pl-bg-3: #1E2630;
  --pl-bg-card: #182028;
  --pl-bg-elev: #1F2832;
  --pl-bg-code: #0B0F14;
  --pl-bg-code-tab: #131922;
  --pl-bg-sidebar: #FFFFFF;
  --pl-bg-sidebar-hover: #F4F6F8;

  --pl-text: #E5EAF0;
  --pl-text-2: #B9C2CC;
  --pl-text-mut: #8896A6;
  --pl-text-soft: #6A7682;
  --pl-text-on-light: #1B232C;
  --pl-text-on-light-2: #4A5663;

  --pl-line: #28323D;
  --pl-line-2: #1E2630;
  --pl-line-soft: #232C36;
  --pl-line-light: #E0E4E9;
  --pl-line-light-2: #ECEFF2;

  --pl-link: #FF6B68;
  --pl-link-hover: #FF9491;
  --pl-link-on-light: #C8252B;
  --pl-link-on-light-hover: #911A1F;

  --pl-callout-info: #1A2A3A;
  --pl-callout-info-line: #4F8FE0;
  --pl-callout-warn: #2C2218;
  --pl-callout-warn-line: #D97706;
  --pl-callout-tip: #18261C;
  --pl-callout-tip-line: #2EA770;
  --pl-callout-danger: #2D1417;
  --pl-callout-danger-line: var(--pl-red);

  --pl-radius-xs: 3px;
  --pl-radius-sm: 5px;
  --pl-radius: 7px;
  --pl-radius-md: 9px;
  --pl-radius-lg: 12px;
  --pl-radius-pill: 999px;

  --pl-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.32);
  --pl-shadow: 0 4px 12px rgba(0, 0, 0, 0.36);
  --pl-shadow-glow: 0 0 0 1px var(--pl-red-line), 0 0 16px rgba(220, 38, 38, 0.18);

  --pl-font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  --pl-mono: ui-monospace, "Menlo", "Cascadia Mono", "Source Code Pro", "Roboto Mono", Consolas, "DejaVu Sans Mono", monospace;

  --pl-header-h: 60px;
  --pl-sidebar-w: 264px;
  --pl-toc-w: 220px;
  --pl-content-max: 800px;
  --pl-shell-max: 1440px;
}

[data-theme="light"] {
  --pl-bg: #FFFFFF;
  --pl-bg-2: #F7F8FA;
  --pl-bg-3: #EFF2F5;
  --pl-bg-card: #FFFFFF;
  --pl-bg-elev: #FFFFFF;
  --pl-bg-code: #0F1419;
  --pl-bg-code-tab: #1A222C;
  --pl-bg-sidebar: #FAFBFC;
  --pl-bg-sidebar-hover: #F0F2F5;
  --pl-text: #1B232C;
  --pl-text-2: #3F4955;
  --pl-text-mut: #6A7682;
  --pl-text-soft: #8896A6;
  --pl-line: #E0E4E9;
  --pl-line-2: #ECEFF2;
  --pl-line-soft: #F1F3F5;
  --pl-link: #C8252B;
  --pl-link-hover: #911A1F;
  --pl-shadow-sm: 0 1px 2px rgba(15, 20, 25, 0.06);
  --pl-shadow: 0 4px 12px rgba(15, 20, 25, 0.08);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body.pl-body {
  font-family: var(--pl-font);
  font-size: 15px;
  line-height: 1.6;
  color: var(--pl-text);
  background: var(--pl-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

a { color: var(--pl-link); text-decoration: none; transition: color .15s ease; }
a:hover { color: var(--pl-link-hover); }

img { max-width: 100%; height: auto; }
hr { border: 0; border-top: 1px solid var(--pl-line); margin: 28px 0; }

::selection { background: var(--pl-red); color: #fff; }

/* ===== Top Header (Redis-style: dark bar, pill search button, red CTA) ===== */
.pl-header {
  position: sticky; top: 0; z-index: 80;
  background: var(--pl-bg);
  border-bottom: 1px solid var(--pl-line);
}
.pl-header__bar {
  width: 100%;
}
.pl-header__inner {
  display: flex; align-items: center; gap: 18px;
  height: var(--pl-header-h);
  max-width: var(--pl-shell-max);
  margin: 0 auto;
  padding: 0 24px;
}
.pl-brand {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--pl-text);
  font-weight: 700;
  text-decoration: none;
  flex-shrink: 0;
}
.pl-brand:hover { color: var(--pl-text); }
.pl-brand__icon { display: inline-flex; align-items: center; }
.pl-brand__name {
  font-size: 18px;
  letter-spacing: -0.01em;
  color: var(--pl-red);
  font-style: italic;
  font-weight: 800;
}
.pl-brand__dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--pl-red);
  margin-left: 2px;
}

.pl-tagchip {
  display: inline-flex; align-items: center; gap: 6px;
  height: 28px;
  padding: 0 10px;
  border-radius: var(--pl-radius-pill);
  border: 1px solid var(--pl-line);
  color: var(--pl-text-2);
  font-size: 12px;
  background: transparent;
  text-decoration: none;
}
.pl-tagchip__star { color: var(--pl-red); }

.pl-topnav {
  display: inline-flex; align-items: center; gap: 4px;
  margin-left: 6px;
}
.pl-topnav__item {
  position: relative;
  height: var(--pl-header-h);
  display: inline-flex; align-items: center;
  padding: 0 12px;
  font-size: 14px;
  font-weight: 500;
  color: var(--pl-text-2);
  text-decoration: none;
  cursor: pointer;
}
.pl-topnav__item:hover { color: var(--pl-text); }
.pl-topnav__item.is-active { color: var(--pl-text); }
.pl-topnav__item.is-active::after {
  content: ""; position: absolute; left: 12px; right: 12px; bottom: 0;
  height: 2px; background: var(--pl-red);
}
.pl-topnav__item.is-active--docs { color: var(--pl-red); }
.pl-topnav__item.is-active--docs::after { background: var(--pl-red); }
.pl-topnav__caret { margin-left: 4px; opacity: .7; }

.pl-spacer { flex: 1; }

.pl-search-btn {
  display: inline-flex; align-items: center; gap: 8px;
  height: 32px;
  padding: 0 14px 0 12px;
  border-radius: var(--pl-radius-pill);
  background: var(--pl-bg-3);
  border: 1px solid var(--pl-line);
  color: var(--pl-text-2);
  font-size: 13px;
  cursor: pointer;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}
.pl-search-btn:hover { background: var(--pl-bg-elev); color: var(--pl-text); border-color: var(--pl-line); }
.pl-search-btn__icon { display: inline-flex; }
.pl-search-btn__shortcut {
  display: none;
  font-family: var(--pl-mono);
  font-size: 11px;
  padding: 1px 5px;
  border-radius: var(--pl-radius-xs);
  border: 1px solid var(--pl-line);
  color: var(--pl-text-mut);
  margin-left: 4px;
}

.pl-header__util {
  display: inline-flex; align-items: center; gap: 14px;
}
.pl-header__util a { color: var(--pl-text-2); font-size: 14px; }
.pl-header__util a:hover { color: var(--pl-text); }

.pl-cta {
  display: inline-flex; align-items: center; gap: 6px;
  height: 32px;
  padding: 0 14px;
  border-radius: var(--pl-radius-pill);
  background: var(--pl-red);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  border: 1px solid var(--pl-red);
  cursor: pointer;
  transition: background .15s ease;
  text-decoration: none;
}
.pl-cta:hover { background: var(--pl-red-2); color: #fff; }
.pl-cta--ghost {
  background: transparent;
  color: var(--pl-text);
  border-color: var(--pl-line);
}
.pl-cta--ghost:hover { border-color: var(--pl-text-mut); color: var(--pl-text); }

.pl-lang {
  position: relative;
}
.pl-lang__btn {
  background: transparent; border: 1px solid var(--pl-line); color: var(--pl-text-2);
  height: 30px; padding: 0 10px; border-radius: var(--pl-radius-pill);
  display: inline-flex; align-items: center; gap: 4px; font-size: 12px; cursor: pointer;
}
.pl-lang__btn:hover { color: var(--pl-text); border-color: var(--pl-text-mut); }
.pl-lang__menu {
  position: absolute; right: 0; top: calc(100% + 6px);
  min-width: 168px;
  background: var(--pl-bg-card);
  border: 1px solid var(--pl-line);
  border-radius: var(--pl-radius-md);
  box-shadow: var(--pl-shadow);
  padding: 6px;
  list-style: none; margin: 0;
  display: none;
}
.pl-lang:hover .pl-lang__menu, .pl-lang:focus-within .pl-lang__menu { display: block; }
.pl-lang__menu li a {
  display: block; padding: 7px 10px; color: var(--pl-text-2); font-size: 13px;
  border-radius: var(--pl-radius-sm);
}
.pl-lang__menu li a:hover { background: var(--pl-bg-3); color: var(--pl-text); }
.pl-lang__menu li a.is-current { color: var(--pl-red); font-weight: 600; }

.pl-icon-btn {
  width: 32px; height: 32px;
  display: inline-flex; align-items: center; justify-content: center;
  background: transparent; border: 1px solid transparent;
  border-radius: var(--pl-radius-pill);
  color: var(--pl-text-2); cursor: pointer;
}
.pl-icon-btn:hover { background: var(--pl-bg-3); color: var(--pl-text); }

.pl-mobile-only { display: none; }
@media (max-width: 1100px) {
  .pl-tagchip, .pl-topnav { display: none; }
}
@media (max-width: 768px) {
  .pl-header__util .pl-cta--ghost { display: none; }
  .pl-mobile-only { display: inline-flex; }
  .pl-header__inner { padding: 0 14px; gap: 8px; }
  .pl-search-btn__shortcut { display: none; }
  .pl-search-btn { padding: 0 10px; }
}

/* ===== Shell (3-column layout for article pages) ===== */
.pl-shell {
  display: block;
}
.pl-shell--has-sidebar {
  display: grid;
  grid-template-columns: var(--pl-sidebar-w) 1fr;
  max-width: var(--pl-shell-max);
  margin: 0 auto;
  align-items: start;
  min-height: calc(100vh - var(--pl-header-h));
}
.pl-main {
  padding: 32px 40px 64px;
  background: var(--pl-bg);
  min-width: 0;
}
.pl-main--full {
  max-width: var(--pl-shell-max);
  margin: 0 auto;
  width: 100%;
}

@media (max-width: 1024px) {
  .pl-shell--has-sidebar { grid-template-columns: 1fr; }
  .pl-main { padding: 24px 20px 48px; }
}

/* ===== Sidebar (light surface contrasting dark main) ===== */
.pl-sidebar {
  background: var(--pl-bg-sidebar);
  color: var(--pl-text-on-light);
  border-right: 1px solid var(--pl-line);
  position: sticky;
  top: var(--pl-header-h);
  align-self: start;
  max-height: calc(100vh - var(--pl-header-h));
  overflow-y: auto;
  padding: 22px 0 32px;
  font-size: 13px;
}
.pl-sidebar__inner {
  padding: 0 18px;
}
.pl-sidebar__group {
  margin-bottom: 18px;
}
.pl-sidebar__group + .pl-sidebar__group {
  border-top: 1px solid var(--pl-line-light-2);
  padding-top: 16px;
}
.pl-sidebar__heading {
  font-size: 13px;
  font-weight: 700;
  color: var(--pl-text-on-light);
  letter-spacing: -0.005em;
  padding: 4px 10px 8px;
  display: flex; align-items: center; gap: 6px;
}
.pl-sidebar__heading--clickable { cursor: pointer; user-select: none; }
.pl-sidebar__chev {
  display: inline-flex;
  color: var(--pl-text-on-light-2);
  transition: transform .18s ease;
}
.pl-sidebar__group.is-collapsed .pl-sidebar__chev { transform: rotate(-90deg); }
.pl-sidebar__group.is-collapsed .pl-sidebar__list { display: none; }
.pl-sidebar__list {
  list-style: none; padding: 0; margin: 0;
}
.pl-sidebar__list--inner { margin-left: 0; }
.pl-sidebar__link {
  display: block;
  padding: 5px 10px 5px 18px;
  color: var(--pl-text-on-light-2);
  text-decoration: none;
  font-size: 12.5px;
  line-height: 1.5;
  border-radius: 0;
  border-left: 2px solid transparent;
  margin-left: 4px;
}
.pl-sidebar__link:hover { color: var(--pl-red); background: transparent; }
.pl-sidebar__link.is-active {
  color: var(--pl-red);
  border-left-color: var(--pl-red);
  font-weight: 500;
}
.pl-sidebar__link--cat {
  font-weight: 600;
  color: var(--pl-text-on-light);
}
.pl-sidebar__filter {
  padding: 0 18px 14px;
}
.pl-sidebar__filter-input {
  width: 100%;
  height: 30px;
  padding: 0 10px;
  border-radius: var(--pl-radius-sm);
  border: 1px solid var(--pl-line-light);
  background: #fff;
  color: var(--pl-text-on-light);
  font-size: 12.5px;
  font-family: inherit;
}
.pl-sidebar__filter-input:focus { outline: none; border-color: var(--pl-red); }

@media (max-width: 1024px) {
  .pl-sidebar {
    position: fixed; left: 0; top: var(--pl-header-h);
    width: 280px;
    transform: translateX(-100%);
    transition: transform .22s ease;
    z-index: 70;
    box-shadow: var(--pl-shadow);
  }
  .pl-sidebar.is-open { transform: translateX(0); }
}

/* ===== Crumb / Breadcrumb ===== */
.pl-crumb {
  font-size: 12px;
  color: var(--pl-text-mut);
  margin-bottom: 18px;
  display: flex; flex-wrap: wrap; align-items: center; gap: 6px;
}
.pl-crumb a { color: var(--pl-text-mut); text-decoration: none; }
.pl-crumb a:hover { color: var(--pl-red); text-decoration: underline; text-underline-offset: 2px; }
.pl-crumb__sep { color: var(--pl-text-soft); }
.pl-crumb__current { color: var(--pl-text); font-weight: 500; }

/* ===== Article (post + page) ===== */
.pl-article {
  max-width: 1180px;
  margin: 0 auto;
  width: 100%;
}
.pl-article__head {
  margin-bottom: 22px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--pl-line);
}
.pl-article__h1 {
  font-size: 32px;
  line-height: 1.25;
  font-weight: 700;
  color: var(--pl-text);
  margin: 0 0 10px;
  letter-spacing: -0.015em;
}
.pl-article__lede {
  font-size: 15.5px;
  color: var(--pl-text-2);
  margin: 0 0 12px;
  line-height: 1.65;
}
.pl-article__meta {
  display: flex; flex-wrap: wrap; gap: 10px;
  font-size: 12.5px;
  color: var(--pl-text-mut);
  align-items: center;
}
.pl-article__meta-sep { color: var(--pl-text-soft); }
.pl-chip {
  display: inline-flex; align-items: center;
  height: 22px; padding: 0 8px;
  border-radius: var(--pl-radius-pill);
  background: var(--pl-red-tint);
  color: var(--pl-red);
  font-size: 11.5px;
  font-weight: 500;
  text-decoration: none;
}
.pl-chip:hover { color: var(--pl-red-2); background: rgba(220, 38, 38, 0.18); }

.pl-article--page .pl-article__head { padding-bottom: 14px; }

/* ===== Article Body grid (main 800px + right TOC 220px) ===== */
.pl-article__body {
  display: grid;
  grid-template-columns: minmax(0, var(--pl-content-max)) var(--pl-toc-w);
  gap: 56px;
  align-items: start;
}
.pl-prose { min-width: 0; max-width: var(--pl-content-max); }

@media (max-width: 1180px) {
  .pl-article__body { grid-template-columns: 1fr; gap: 32px; }
  .pl-toc { display: none; }
}

/* ===== Right TOC (Redis style: plain text, hairline left rule) ===== */
.pl-toc {
  position: sticky;
  top: calc(var(--pl-header-h) + 24px);
  align-self: start;
}
.pl-toc__inner {
  padding-left: 16px;
  border-left: 1px solid var(--pl-line);
}
.pl-toc__head {
  font-size: 12px;
  font-weight: 600;
  color: var(--pl-text);
  margin-bottom: 10px;
  letter-spacing: -0.005em;
}
.pl-toc__list {
  list-style: none; padding: 0; margin: 0 0 18px;
}
.pl-toc__item { line-height: 1.5; margin: 4px 0; }
.pl-toc__item--lv2 { padding-left: 0; }
.pl-toc__item--lv3 { padding-left: 12px; }
.pl-toc__item a {
  color: var(--pl-text-mut);
  font-size: 12.5px;
  display: block;
  padding: 2px 0;
  text-decoration: none;
}
.pl-toc__item a:hover { color: var(--pl-text); }
.pl-toc__item a.is-active { color: var(--pl-red); font-weight: 500; }
.pl-toc__more { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--pl-line-soft); }

/* ===== Prose (main article content) ===== */
.pl-prose {
  font-size: 15px;
  line-height: 1.72;
  color: var(--pl-text-2);
}
.pl-prose > * { margin-top: 0; }
.pl-prose h2 {
  font-size: 22px;
  line-height: 1.3;
  font-weight: 700;
  color: var(--pl-text);
  margin: 36px 0 12px;
  letter-spacing: -0.005em;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--pl-line);
}
.pl-prose h3 {
  font-size: 17.5px;
  line-height: 1.4;
  font-weight: 700;
  color: var(--pl-text);
  margin: 24px 0 10px;
}
.pl-prose h4 { font-size: 15.5px; font-weight: 600; color: var(--pl-text); margin: 18px 0 8px; }
.pl-prose p { margin: 0 0 14px; }
.pl-prose ul, .pl-prose ol { padding-left: 22px; margin: 0 0 14px; }
.pl-prose li { margin: 4px 0; }
.pl-prose strong { color: var(--pl-text); font-weight: 600; }
.pl-prose em { color: var(--pl-text); }
.pl-prose blockquote {
  margin: 14px 0;
  padding: 12px 16px;
  background: var(--pl-callout-info);
  border-left: 3px solid var(--pl-callout-info-line);
  border-radius: 0 var(--pl-radius-sm) var(--pl-radius-sm) 0;
  color: var(--pl-text-2);
  font-size: 14px;
}
.pl-prose blockquote p:last-child { margin-bottom: 0; }
.pl-prose a { color: var(--pl-red); border-bottom: 1px solid transparent; }
.pl-prose a:hover { color: var(--pl-red-2); border-bottom-color: var(--pl-red-2); }
.pl-prose hr { border: 0; border-top: 1px solid var(--pl-line); margin: 28px 0; }

/* Anchor link (rendered by addHeadingAnchors) */
.pl-prose h2[id], .pl-prose h3[id] { scroll-margin-top: 84px; }

/* ===== Inline code & code block (Redis: dark + top language tab) ===== */
.pl-prose code {
  font-family: var(--pl-mono);
  font-size: 13px;
  padding: 1px 5px;
  background: var(--pl-bg-3);
  border-radius: var(--pl-radius-xs);
  color: var(--pl-red);
  border: 1px solid var(--pl-line);
}
.pl-prose pre {
  position: relative;
  background: var(--pl-bg-code);
  border: 1px solid var(--pl-line);
  border-radius: var(--pl-radius);
  padding: 14px 16px;
  overflow-x: auto;
  margin: 14px 0;
  font-size: 13px;
  line-height: 1.55;
  color: #E5EAF0;
}
.pl-prose pre code {
  background: transparent;
  padding: 0;
  color: inherit;
  border: 0;
  font-size: 13px;
}
.pl-prose pre::before {
  content: "Language";
  position: absolute;
  top: 0; left: 0; right: 0;
  display: none;
  padding: 6px 14px;
  background: var(--pl-bg-code-tab);
  font-size: 11.5px;
  color: var(--pl-text-mut);
  border-bottom: 1px solid var(--pl-line);
}

/* ===== Tables ===== */
.pl-prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
  margin: 16px 0;
  border: 1px solid var(--pl-line);
  border-radius: var(--pl-radius-sm);
  overflow: hidden;
}
.pl-prose thead {
  background: var(--pl-bg-3);
}
.pl-prose th {
  text-align: left;
  padding: 10px 12px;
  font-weight: 600;
  color: var(--pl-text);
  border-bottom: 1px solid var(--pl-line);
}
.pl-prose td {
  padding: 9px 12px;
  border-bottom: 1px solid var(--pl-line-2);
  color: var(--pl-text-2);
  vertical-align: top;
}
.pl-prose tr:last-child td { border-bottom: 0; }

/* ===== Hero (homepage Redis style) ===== */
.pl-hero {
  padding: 48px 24px 32px;
  text-align: center;
  position: relative;
}
.pl-hero__inner {
  max-width: 880px;
  margin: 0 auto;
}
.pl-hero__h1 {
  font-size: 38px;
  font-weight: 700;
  color: var(--pl-text);
  margin: 0 0 12px;
  line-height: 1.2;
  letter-spacing: -0.02em;
}
.pl-hero__sub {
  font-size: 16px;
  color: var(--pl-text-2);
  margin: 0 0 26px;
}
.pl-hero__cta {
  display: inline-flex; gap: 10px; flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 20px;
}
.pl-hero__cta a {
  display: inline-flex; align-items: center; gap: 6px;
  height: 38px;
  padding: 0 18px;
  border-radius: var(--pl-radius-pill);
  font-size: 14px;
  font-weight: 600;
  border: 1px solid var(--pl-line);
  color: var(--pl-text);
  background: var(--pl-bg-2);
  text-decoration: none;
  transition: border-color .15s, background .15s;
}
.pl-hero__cta a:hover { border-color: var(--pl-text-mut); background: var(--pl-bg-3); }
.pl-hero__cta a.is-primary {
  background: transparent;
  border: 1.5px solid var(--pl-red);
  color: var(--pl-red);
}
.pl-hero__cta a.is-primary:hover {
  background: var(--pl-red);
  color: #fff;
  border-color: var(--pl-red);
}
.pl-hero__chatbot {
  position: absolute; right: 24px; top: 48px;
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 14px;
  border-radius: var(--pl-radius-pill);
  border: 1px solid var(--pl-line);
  font-size: 13px;
  color: var(--pl-text-2);
  background: var(--pl-bg-2);
}
.pl-hero__chatbot::before {
  content: "✦"; color: var(--pl-red); font-size: 11px;
}

/* Hero search field (large central) */
.pl-hero-search {
  display: flex; align-items: center; gap: 8px;
  max-width: 560px;
  margin: 24px auto 0;
  height: 44px;
  padding: 0 14px;
  background: var(--pl-bg-2);
  border: 1px solid var(--pl-line);
  border-radius: var(--pl-radius-pill);
  transition: border-color .15s ease, box-shadow .15s ease;
}
.pl-hero-search:focus-within {
  border-color: var(--pl-red);
  box-shadow: var(--pl-shadow-glow);
}
.pl-hero-search__icon { color: var(--pl-text-mut); display: inline-flex; }
.pl-hero-search__input {
  flex: 1;
  border: 0; background: transparent;
  color: var(--pl-text);
  font-size: 14.5px;
  font-family: inherit;
  outline: none;
}
.pl-hero-search__input::placeholder { color: var(--pl-text-mut); }

/* ===== Section blocks ===== */
.pl-section {
  max-width: var(--pl-shell-max);
  margin: 0 auto;
  padding: 28px 24px;
}
.pl-section__h {
  font-size: 22px;
  font-weight: 700;
  color: var(--pl-text);
  margin: 0 0 16px;
  letter-spacing: -0.01em;
}
.pl-section__p {
  font-size: 14px;
  color: var(--pl-text-2);
  margin: 0 0 16px;
  max-width: 800px;
}

/* ===== Card grid (Redis style: rectangular cards with arrow-bullet sub-list) ===== */
.pl-cardgrid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 14px;
}
.pl-cardgrid--3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}
.pl-cardgrid--2 {
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}
.pl-card {
  display: block;
  position: relative;
  padding: 16px 16px 14px;
  border: 1px solid var(--pl-line);
  border-radius: var(--pl-radius-md);
  background: var(--pl-bg-card);
  color: var(--pl-text);
  text-decoration: none;
  transition: border-color .15s ease, transform .15s ease;
}
.pl-card:hover {
  border-color: var(--pl-red);
  color: var(--pl-text);
}
.pl-card__icon {
  width: 24px; height: 24px;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--pl-text-mut);
  margin-bottom: 8px;
}
.pl-card__title {
  font-size: 15.5px;
  font-weight: 700;
  color: var(--pl-text);
  margin-bottom: 4px;
  letter-spacing: -0.005em;
}
.pl-card__desc {
  font-size: 12.5px;
  color: var(--pl-text-mut);
  margin: 0 0 6px;
  line-height: 1.5;
}
.pl-card__list {
  list-style: none; padding: 0; margin: 8px 0 0;
}
.pl-card__list li {
  padding: 2px 0;
  font-size: 12.5px;
  color: var(--pl-red);
  display: flex; align-items: center; gap: 5px;
}
.pl-card__list li::before { content: "→"; color: var(--pl-red); }
.pl-card__count {
  position: absolute; top: 14px; right: 14px;
  font-size: 11px;
  color: var(--pl-text-mut);
  border: 1px solid var(--pl-line);
  padding: 1px 6px;
  border-radius: var(--pl-radius-pill);
}
.pl-card.is-featured {
  border-color: var(--pl-red);
  box-shadow: 0 0 0 1px var(--pl-red-line);
}

/* Tutorials/resources tiny cards row */
.pl-tilegrid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px;
}
.pl-tile {
  display: block;
  padding: 14px;
  border: 1px solid var(--pl-line);
  border-radius: var(--pl-radius-sm);
  background: transparent;
  color: var(--pl-text);
  text-decoration: none;
}
.pl-tile:hover { border-color: var(--pl-red); color: var(--pl-text); }
.pl-tile__title { font-size: 14px; font-weight: 600; margin-bottom: 4px; }
.pl-tile__desc { font-size: 12.5px; color: var(--pl-text-mut); }

/* ===== Reflist (offset categories) ===== */
.pl-reflist {
  list-style: none; padding: 0; margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 8px 18px;
}
.pl-reflist li {
  padding: 6px 0;
  border-bottom: 1px solid var(--pl-line);
}
.pl-reflist li a { color: var(--pl-text); font-size: 14px; }
.pl-reflist li a:hover { color: var(--pl-red); }
.pl-reflist__desc {
  font-size: 12px;
  color: var(--pl-text-mut);
  display: block;
  margin-top: 2px;
}

/* ===== Post list (latest articles) ===== */
.pl-postlist {
  list-style: none; padding: 0; margin: 0;
}
.pl-postlist__item {
  padding: 16px 0;
  border-bottom: 1px solid var(--pl-line);
}
.pl-postlist__item:first-child { padding-top: 6px; }
.pl-postlist__item:last-child { border-bottom: 0; }
.pl-postlist__title {
  display: block;
  font-size: 16px;
  font-weight: 600;
  color: var(--pl-text);
  margin-bottom: 4px;
  text-decoration: none;
}
.pl-postlist__title:hover { color: var(--pl-red); }
.pl-postlist__meta {
  display: flex; gap: 10px; align-items: center;
  font-size: 12px;
  color: var(--pl-text-mut);
  margin-bottom: 6px;
}
.pl-postlist__chip {
  display: inline-flex;
  height: 18px; padding: 0 6px;
  border-radius: var(--pl-radius-pill);
  background: var(--pl-bg-3);
  color: var(--pl-text-2);
  font-size: 11px;
}
.pl-postlist__desc {
  font-size: 13.5px;
  color: var(--pl-text-2);
  margin: 4px 0 0;
  line-height: 1.6;
}
.pl-viewall {
  margin-top: 14px;
}
.pl-viewall a {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--pl-red);
}

/* ===== FAQ (homepage) ===== */
.pl-faq {
  border-top: 1px solid var(--pl-line);
}
.pl-faq__item {
  border-bottom: 1px solid var(--pl-line);
}
.pl-faq__q {
  cursor: pointer;
  list-style: none;
  padding: 14px 28px 14px 0;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--pl-text);
  position: relative;
}
.pl-faq__q::-webkit-details-marker { display: none; }
.pl-faq__q::after {
  content: "+";
  position: absolute; right: 0; top: 14px;
  width: 22px; height: 22px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--pl-line);
  border-radius: 50%;
  font-size: 14px; line-height: 1;
  color: var(--pl-text-2);
}
.pl-faq__item[open] .pl-faq__q::after { content: "−"; color: var(--pl-red); border-color: var(--pl-red); }
.pl-faq__a {
  padding: 0 0 16px;
  font-size: 14px;
  color: var(--pl-text-2);
  line-height: 1.7;
}
.pl-faq__a a { color: var(--pl-red); }

/* ===== Pager ===== */
.pl-pager {
  display: flex; flex-wrap: wrap; gap: 6px; align-items: center;
  margin-top: 28px;
  justify-content: center;
}
.pl-pager__btn, .pl-pager__num {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 34px; height: 32px; padding: 0 12px;
  border: 1px solid var(--pl-line);
  border-radius: var(--pl-radius-sm);
  background: var(--pl-bg-2);
  color: var(--pl-text-2);
  font-size: 13px;
  text-decoration: none;
}
.pl-pager__btn:hover, .pl-pager__num:hover { border-color: var(--pl-red); color: var(--pl-red); }
.pl-pager__num.is-current {
  background: var(--pl-red); color: #fff; border-color: var(--pl-red);
}
.pl-pager__btn.is-disabled, .pl-pager__num.is-disabled {
  opacity: .5; cursor: not-allowed; pointer-events: none;
}

/* ===== Prev/Next navigation ===== */
.pl-prevnext {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 36px;
  padding-top: 22px;
  border-top: 1px solid var(--pl-line);
}
.pl-prevnext__item {
  display: flex; flex-direction: column; gap: 4px;
  padding: 12px 14px;
  border: 1px solid var(--pl-line);
  border-radius: var(--pl-radius-md);
  background: var(--pl-bg-2);
  text-decoration: none;
  color: var(--pl-text);
  transition: border-color .15s ease;
}
.pl-prevnext__item:hover { border-color: var(--pl-red); color: var(--pl-text); }
.pl-prevnext__next { text-align: right; align-items: flex-end; }
.pl-prevnext__lab { font-size: 11.5px; color: var(--pl-text-mut); display: inline-flex; align-items: center; gap: 4px; }
.pl-prevnext__t { font-size: 14px; font-weight: 600; color: var(--pl-text); }

@media (max-width: 720px) {
  .pl-prevnext { grid-template-columns: 1fr; }
  .pl-prevnext__next { text-align: left; align-items: flex-start; }
}

/* ===== Footer ===== */
.pl-footer {
  background: #0A0E12;
  border-top: 1px solid var(--pl-line);
  margin-top: 48px;
  padding: 36px 0 22px;
  color: var(--pl-text-2);
  font-size: 13px;
}
[data-theme="light"] .pl-footer {
  background: var(--pl-bg-2);
}
.pl-footer__inner {
  max-width: var(--pl-shell-max);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.2fr repeat(4, 1fr);
  gap: 28px;
}
.pl-footer__brand { padding-right: 12px; }
.pl-footer__logo {
  font-size: 22px;
  font-style: italic;
  font-weight: 800;
  color: var(--pl-red);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.pl-footer__tag {
  color: var(--pl-text-mut);
  font-size: 12.5px;
  line-height: 1.6;
  margin: 0 0 14px;
}
.pl-footer__social {
  display: flex; gap: 10px;
}
.pl-footer__social a {
  width: 26px; height: 26px;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--pl-text-mut);
  border-radius: 50%;
}
.pl-footer__social a:hover { color: var(--pl-text); }
.pl-footer__col { min-width: 0; }
.pl-footer__h {
  font-size: 11px;
  font-weight: 700;
  color: var(--pl-text-mut);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.pl-footer__col ul {
  list-style: none; padding: 0; margin: 0;
}
.pl-footer__col li { padding: 3px 0; }
.pl-footer__col li a {
  color: var(--pl-text-2);
  font-size: 12.5px;
  text-decoration: none;
}
.pl-footer__col li a:hover { color: var(--pl-red); }
.pl-footer__col li a.is-current { color: var(--pl-red); font-weight: 600; }
.pl-footer__lang { display: flex; flex-wrap: wrap; gap: 4px 10px; }
.pl-footer__lang li { padding: 0; }

.pl-footer__bottom {
  max-width: var(--pl-shell-max);
  margin: 28px auto 0;
  padding: 18px 24px 0;
  border-top: 1px solid var(--pl-line);
  display: flex; flex-wrap: wrap; gap: 14px; justify-content: space-between; align-items: flex-start;
  font-size: 12px;
  color: var(--pl-text-mut);
}
.pl-footer__rights { color: var(--pl-text-mut); }
.pl-footer__risk { max-width: 760px; line-height: 1.6; color: var(--pl-text-soft); }
.pl-footer__legal {
  display: flex; gap: 14px; flex-wrap: wrap;
  margin-top: 8px;
  font-size: 12px;
}
.pl-footer__legal a { color: var(--pl-text-mut); text-decoration: none; }
.pl-footer__legal a:hover { color: var(--pl-text-2); }

@media (max-width: 1024px) {
  .pl-footer__inner { grid-template-columns: 1fr 1fr 1fr; }
  .pl-footer__brand { grid-column: 1 / -1; }
}
@media (max-width: 600px) {
  .pl-footer__inner { grid-template-columns: 1fr 1fr; }
}

/* ===== 404 ===== */
.pl-404 {
  max-width: 520px;
  margin: 80px auto;
  text-align: center;
  padding: 0 24px;
}
.pl-404__code {
  font-family: var(--pl-mono);
  font-size: 88px;
  font-weight: 800;
  color: var(--pl-red);
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 14px;
}
.pl-404__title { font-size: 22px; font-weight: 700; color: var(--pl-text); margin: 0 0 8px; }
.pl-404__body { color: var(--pl-text-2); margin: 0 0 22px; font-size: 14.5px; }

.pl-btn {
  display: inline-flex; align-items: center; gap: 6px;
  height: 38px; padding: 0 18px;
  border-radius: var(--pl-radius-pill);
  font-size: 14px; font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid var(--pl-line);
  background: transparent;
  color: var(--pl-text);
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}
.pl-btn--primary { background: var(--pl-red); color: #fff; border-color: var(--pl-red); }
.pl-btn--primary:hover { background: var(--pl-red-2); color: #fff; }
.pl-btn--ghost:hover { border-color: var(--pl-red); color: var(--pl-red); }

/* ===== Callout / Admonition ===== */
.pl-callout {
  margin: 14px 0;
  padding: 12px 14px;
  border-radius: var(--pl-radius-sm);
  background: var(--pl-callout-info);
  border-left: 3px solid var(--pl-callout-info-line);
  font-size: 13.5px;
  color: var(--pl-text-2);
}
.pl-callout--warn { background: var(--pl-callout-warn); border-left-color: var(--pl-callout-warn-line); }
.pl-callout--tip { background: var(--pl-callout-tip); border-left-color: var(--pl-callout-tip-line); }
.pl-callout--danger { background: var(--pl-callout-danger); border-left-color: var(--pl-callout-danger-line); }
.pl-callout__h {
  display: flex; gap: 6px; align-items: center;
  font-weight: 700; color: var(--pl-text);
  font-size: 13px;
  margin-bottom: 4px;
}

/* ===== Theme toggle visibility ===== */
[data-theme="dark"] .pl-theme-light, [data-theme="light"] .pl-theme-dark { display: none; }
[data-theme="dark"] .pl-theme-dark, [data-theme="light"] .pl-theme-light { display: inline-flex; }

/* ===== Util ===== */
.pl-mono { font-family: var(--pl-mono); }
.pl-divider {
  height: 1px; background: var(--pl-line);
  margin: 24px 0;
}
.pl-section--alt {
  background: var(--pl-bg-2);
  border-top: 1px solid var(--pl-line);
  border-bottom: 1px solid var(--pl-line);
}

/* ===== Hero accent: little ECG line under title (Redis pulse-themed signature) ===== */
.pl-hero__pulse {
  margin: 18px auto 0;
  max-width: 280px;
  height: 18px;
  color: var(--pl-red);
  display: block;
}

/* ===== Step blocks (used in download page) ===== */
.pl-prose .pl-prose__step {
  border: 1px solid var(--pl-line);
  border-radius: var(--pl-radius-md);
  padding: 14px 16px;
  background: var(--pl-bg-2);
  margin: 12px 0;
}

/* Mobile content padding tweak */
@media (max-width: 600px) {
  .pl-article__h1 { font-size: 26px; }
  .pl-prose h2 { font-size: 19px; margin-top: 28px; }
  .pl-prose h3 { font-size: 16px; }
  .pl-section { padding: 22px 16px; }
  .pl-hero { padding: 32px 16px 22px; }
  .pl-hero__h1 { font-size: 28px; }
  .pl-cardgrid { grid-template-columns: 1fr; }
}

/* ===== Body shell on home (no sidebar) ===== */
body.is-home .pl-main {
  padding: 0;
}
body.is-home .pl-section:first-of-type {
  padding-top: 8px;
}

/* ===== Body shell on post ===== */
body.is-post .pl-main {
  background: var(--pl-bg);
}

/* ===== Sticky highlight when toc active in viewport ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* ===== Scrollbar (subtle) ===== */
.pl-sidebar::-webkit-scrollbar { width: 8px; }
.pl-sidebar::-webkit-scrollbar-thumb { background: var(--pl-line-light); border-radius: 4px; }
.pl-sidebar::-webkit-scrollbar-thumb:hover { background: #C6CCD3; }
.pl-prose pre::-webkit-scrollbar { height: 8px; }
.pl-prose pre::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.16); border-radius: 4px; }

/* ===== Search button keyboard hint (large displays) ===== */
@media (min-width: 1280px) {
  .pl-search-btn { min-width: 200px; justify-content: flex-start; }
  .pl-search-btn__shortcut { display: inline-flex; margin-left: auto; }
}

/* ===== Hero quick-tabs (Redis "Develop in your language") ===== */
.pl-langtabs {
  margin-top: 26px;
  display: flex; flex-wrap: wrap; gap: 14px; align-items: center; justify-content: center;
  font-size: 12.5px;
  color: var(--pl-text-mut);
}
.pl-langtabs__lab { color: var(--pl-text); font-weight: 600; }
.pl-langtabs__pill {
  display: inline-flex; align-items: center; height: 28px; padding: 0 10px;
  background: var(--pl-bg-2); border: 1px solid var(--pl-line); border-radius: var(--pl-radius-sm);
  color: var(--pl-text-2);
  font-family: var(--pl-mono); font-size: 12px;
}

/* ===== Featured row (Redis "From open source to production scale") ===== */
.pl-featrow {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  margin-bottom: 12px;
}
.pl-featrow .pl-card { padding: 14px; }
.pl-featrow__motto {
  text-align: center;
  color: var(--pl-red);
  font-weight: 600;
  font-size: 13px;
  margin-top: 6px;
}

/* ===== CTA strip (Redis quick-link arrow buttons) ===== */
.pl-arrowlinks {
  display: flex; flex-wrap: wrap; gap: 6px 16px;
  margin: 8px 0 14px;
  font-size: 13px;
}
.pl-arrowlinks a {
  color: var(--pl-red); display: inline-flex; align-items: center; gap: 4px;
}
.pl-arrowlinks a::after { content: "→"; }

/* end */