/* BabianX — TanStack-style docs (22_tanstack), dark adaptation
 * Brand: #111827 ink + #FBBF24 neon yellow accent.
 * Layout signatures (independent visual identity, not copied from babianpulse/peak/etc):
 *   - Dark ink body (#0B0F19) + slate-deep panels.
 *   - Header: dense single bar with mono "BABIAN/X" wordmark + version pill (v5),
 *     icon-only top nav (book / grid / download / info / shield), pill search,
 *     "Auto" theme pill, icon language menu, ghost "Log In" link.
 *   - Two left pill row above sidebar (KYC / Latest dropdowns) — tanstack signature.
 *   - Three-column shell: sidebar (264px, slate panel) + main center (~720px, off-black) +
 *     right partner rail (~220px, dense list of category chips + 2 small promo cards).
 *   - Article header has a tiny kicker label ("Getting Started" style) above big bold H1
 *     plus a "Copy page ▾" outline button on the right.
 *   - Code blocks: top tab bar with language label + copy button at the right corner.
 *   - Numbered workflow strip on home, with 01–04 mono numerals + neon yellow accent rule.
 *   - Cards have a subtle yellow corner glow on hover, no shadow on rest, hairline 1px borders.
 *   - Footer: minimal black bar with 4 column links + risk line at the bottom.
 */

:root {
  --bx-ink: #FBBF24;
  --bx-ink-2: #F59E0B;
  --bx-ink-3: #D97706;
  --bx-ink-tint: rgba(251, 191, 36, 0.12);
  --bx-ink-line: rgba(251, 191, 36, 0.32);
  --bx-ink-glow: rgba(251, 191, 36, 0.18);

  --bx-bg: #0B0F19;
  --bx-bg-2: #0F1525;
  --bx-bg-3: #131A2C;
  --bx-bg-card: #111827;
  --bx-bg-elev: #161F33;
  --bx-bg-code: #060A12;
  --bx-bg-code-tab: #0E1424;
  --bx-bg-sidebar: #0F1525;
  --bx-bg-sidebar-hover: #161F33;
  --bx-bg-rail: #0F1525;

  --bx-text: #E6EAF2;
  --bx-text-2: #B8BEC9;
  --bx-text-mut: #8A93A4;
  --bx-text-soft: #67708A;

  --bx-line: #1F2A3F;
  --bx-line-2: #1A2336;
  --bx-line-soft: #182135;

  --bx-link: #FBBF24;
  --bx-link-hover: #FDE68A;

  --bx-callout-info: #122236;
  --bx-callout-info-line: #5B9CFF;
  --bx-callout-warn: #2C2118;
  --bx-callout-warn-line: #E0A732;
  --bx-callout-tip: #122620;
  --bx-callout-tip-line: #34B57E;
  --bx-callout-danger: #2A1419;
  --bx-callout-danger-line: #DC2939;

  --bx-radius-xs: 3px;
  --bx-radius-sm: 5px;
  --bx-radius: 7px;
  --bx-radius-md: 10px;
  --bx-radius-lg: 14px;
  --bx-radius-pill: 999px;

  --bx-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.45);
  --bx-shadow: 0 6px 18px rgba(0, 0, 0, 0.55);
  --bx-shadow-glow: 0 0 0 1px var(--bx-ink-line), 0 0 22px var(--bx-ink-glow);

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

  --bx-header-h: 56px;
  --bx-sidebar-w: 264px;
  --bx-rail-w: 220px;
  --bx-toc-w: 200px;
  --bx-content-max: 720px;
  --bx-shell-max: 1440px;
}

[data-theme="light"] {
  --bx-bg: #FFFFFF;
  --bx-bg-2: #F5F7FA;
  --bx-bg-3: #EEF1F6;
  --bx-bg-card: #FFFFFF;
  --bx-bg-elev: #FFFFFF;
  --bx-bg-code: #0B1020;
  --bx-bg-code-tab: #131A2C;
  --bx-bg-sidebar: #F8FAFC;
  --bx-bg-sidebar-hover: #EEF1F6;
  --bx-bg-rail: #F8FAFC;
  --bx-text: #0B1020;
  --bx-text-2: #283042;
  --bx-text-mut: #5A6478;
  --bx-text-soft: #8590A6;
  --bx-line: #E1E5EC;
  --bx-line-2: #ECEEF3;
  --bx-line-soft: #F2F4F7;
  --bx-link: #B45309;
  --bx-link-hover: #92400E;
  --bx-shadow-sm: 0 1px 2px rgba(11, 16, 32, 0.06);
  --bx-shadow: 0 4px 12px rgba(11, 16, 32, 0.08);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body.bx-body {
  font-family: var(--bx-font);
  font-size: 15px;
  line-height: 1.65;
  color: var(--bx-text);
  background: var(--bx-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

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

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

::selection { background: var(--bx-ink); color: #0B0F19; }

/* ===== Header (TanStack-style: dense single bar, mono brand, icon nav) ===== */
.bx-header {
  position: sticky; top: 0; z-index: 80;
  background: rgba(11, 15, 25, 0.92);
  backdrop-filter: saturate(180%) blur(8px);
  -webkit-backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--bx-line);
}
[data-theme="light"] .bx-header {
  background: rgba(255, 255, 255, 0.92);
}
.bx-header__inner {
  display: flex; align-items: center; gap: 14px;
  height: var(--bx-header-h);
  max-width: var(--bx-shell-max);
  margin: 0 auto;
  padding: 0 22px;
}
.bx-brand {
  display: inline-flex; align-items: center; gap: 9px;
  text-decoration: none;
  flex-shrink: 0;
}
.bx-brand:hover { color: var(--bx-text); }
.bx-brand__icon { display: inline-flex; align-items: center; }
.bx-brand__name {
  font-family: var(--bx-mono);
  font-weight: 800;
  font-size: 16px;
  letter-spacing: 0.01em;
}
.bx-brand__name-a { color: var(--bx-text); }
.bx-brand__name-b {
  color: var(--bx-ink);
  margin-left: 1px;
  text-shadow: 0 0 12px rgba(251, 191, 36, 0.45);
}
.bx-brand__ver {
  display: inline-flex; align-items: center;
  height: 18px; padding: 0 6px;
  border-radius: var(--bx-radius-xs);
  background: var(--bx-bg-3);
  border: 1px solid var(--bx-line);
  color: var(--bx-text-mut);
  font-family: var(--bx-mono);
  font-size: 10.5px; font-weight: 600;
  letter-spacing: 0.04em;
  margin-left: 4px;
}
.bx-spacer { flex: 1; }

.bx-topnav {
  display: inline-flex; align-items: center; gap: 0;
  margin-right: 6px;
}
.bx-topnav__icon {
  width: 32px; height: 32px;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--bx-text-mut);
  border-radius: var(--bx-radius-sm);
  transition: color .15s ease, background .15s ease;
}
.bx-topnav__icon:hover {
  color: var(--bx-text);
  background: var(--bx-bg-3);
}

.bx-search-btn {
  display: inline-flex; align-items: center; gap: 8px;
  height: 30px;
  padding: 0 10px;
  border-radius: var(--bx-radius-md);
  background: var(--bx-bg-3);
  border: 1px solid var(--bx-line);
  color: var(--bx-text-2);
  font-size: 12.5px;
  cursor: pointer;
  min-width: 220px;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}
.bx-search-btn:hover { background: var(--bx-bg-elev); color: var(--bx-text); border-color: var(--bx-line); }
.bx-search-btn__icon { display: inline-flex; }
.bx-search-btn__lab { color: var(--bx-text-mut); flex: 1; text-align: left; }
.bx-search-btn__shortcut {
  font-family: var(--bx-mono);
  font-size: 11px;
  padding: 1px 6px;
  border-radius: var(--bx-radius-xs);
  border: 1px solid var(--bx-line);
  color: var(--bx-text-mut);
}

.bx-auto-btn {
  display: inline-flex; align-items: center; gap: 6px;
  height: 30px;
  padding: 0 12px;
  border-radius: var(--bx-radius-pill);
  background: transparent;
  border: 1px solid var(--bx-line);
  color: var(--bx-text-2);
  font-size: 12px;
  cursor: pointer;
}
.bx-auto-btn:hover { color: var(--bx-text); border-color: var(--bx-text-mut); }
.bx-auto-btn__dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--bx-ink);
  box-shadow: 0 0 8px rgba(251, 191, 36, 0.6);
}

.bx-lang { position: relative; }
.bx-lang__btn {
  background: transparent; border: 1px solid transparent; color: var(--bx-text-2);
  height: 30px; padding: 0 10px; border-radius: var(--bx-radius-pill);
  display: inline-flex; align-items: center; gap: 4px; font-size: 12px; cursor: pointer;
}
.bx-lang__btn:hover { color: var(--bx-text); background: var(--bx-bg-3); }
.bx-lang__menu {
  position: absolute; right: 0; top: calc(100% + 6px);
  min-width: 168px;
  background: var(--bx-bg-card);
  border: 1px solid var(--bx-line);
  border-radius: var(--bx-radius-md);
  box-shadow: var(--bx-shadow);
  padding: 6px;
  list-style: none; margin: 0;
  display: none;
  z-index: 90;
}
.bx-lang:hover .bx-lang__menu, .bx-lang:focus-within .bx-lang__menu { display: block; }
.bx-lang__menu li a {
  display: block; padding: 7px 10px; color: var(--bx-text-2); font-size: 13px;
  border-radius: var(--bx-radius-sm);
}
.bx-lang__menu li a:hover { background: var(--bx-bg-3); color: var(--bx-text); }
.bx-lang__menu li a.is-current { color: var(--bx-ink); font-weight: 600; }

.bx-icon-btn {
  width: 30px; height: 30px;
  display: inline-flex; align-items: center; justify-content: center;
  background: transparent; border: 1px solid transparent;
  border-radius: var(--bx-radius-pill);
  color: var(--bx-text-2); cursor: pointer;
}
.bx-icon-btn:hover { background: var(--bx-bg-3); color: var(--bx-text); }
.bx-theme-light, .bx-theme-dark { display: inline-flex; }
[data-theme="dark"] .bx-theme-light { display: none; }
[data-theme="light"] .bx-theme-dark { display: none; }

.bx-header__login {
  display: inline-flex; align-items: center; gap: 6px;
  height: 30px; padding: 0 12px;
  border-radius: var(--bx-radius-pill);
  border: 1px solid var(--bx-line);
  color: var(--bx-text);
  font-size: 12.5px;
  font-weight: 500;
}
.bx-header__login:hover {
  border-color: var(--bx-ink);
  color: var(--bx-ink);
  background: var(--bx-ink-tint);
}
.bx-header__login-ic { display: inline-flex; }

.bx-mobile-only { display: none; }
@media (max-width: 1100px) {
  .bx-search-btn { min-width: 0; }
  .bx-search-btn__lab { display: none; }
  .bx-search-btn__shortcut { display: none; }
}
@media (max-width: 880px) {
  .bx-topnav { display: none; }
  .bx-auto-btn { display: none; }
}
@media (max-width: 720px) {
  .bx-header__login { display: none; }
  .bx-mobile-only { display: inline-flex; }
}

/* ===== Shell layout: sidebar | main | rail ===== */
.bx-shell {
  max-width: var(--bx-shell-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: var(--bx-sidebar-w) 1fr var(--bx-rail-w);
  gap: 0;
  align-items: start;
  padding: 0 22px;
}
@media (max-width: 1200px) {
  .bx-shell {
    grid-template-columns: var(--bx-sidebar-w) 1fr;
  }
  .bx-rail { display: none; }
}
@media (max-width: 900px) {
  .bx-shell {
    grid-template-columns: 1fr;
  }
  .bx-sidebar { display: none; }
}

.bx-main {
  min-width: 0;
  padding: 32px 36px 80px;
  border-left: 1px solid var(--bx-line);
  border-right: 1px solid var(--bx-line);
  background: var(--bx-bg);
}
.bx-main--full {
  border: 0;
  padding: 0;
  max-width: var(--bx-shell-max);
  margin: 0 auto;
}
@media (max-width: 900px) {
  .bx-main { border: 0; padding: 24px 16px 60px; }
}

/* ===== Sidebar (left) ===== */
.bx-sidebar {
  position: sticky;
  top: var(--bx-header-h);
  align-self: start;
  height: calc(100vh - var(--bx-header-h));
  overflow-y: auto;
  padding: 18px 14px 40px 14px;
  background: var(--bx-bg-sidebar);
  border-right: 0;
  font-size: 13.5px;
}
.bx-sidebar__pillrow {
  display: grid; grid-template-columns: 1fr 1fr; gap: 8px;
  margin-bottom: 12px;
}
.bx-sidebar__pill {
  display: inline-flex; align-items: center; gap: 5px;
  height: 30px; padding: 0 10px;
  border: 1px solid var(--bx-line);
  border-radius: var(--bx-radius-md);
  color: var(--bx-text-2);
  font-size: 12px;
  background: var(--bx-bg-3);
}
.bx-sidebar__pill-ic { color: var(--bx-ink); display: inline-flex; }
.bx-sidebar__pill-ar { margin-left: auto; color: var(--bx-text-mut); font-size: 9px; }

.bx-sidebar__filter {
  position: relative;
  margin-bottom: 14px;
}
.bx-sidebar__filter-ic {
  position: absolute; left: 9px; top: 50%; transform: translateY(-50%);
  color: var(--bx-text-mut); display: inline-flex;
}
.bx-sidebar__filter-input {
  width: 100%;
  height: 30px;
  padding: 0 10px 0 28px;
  background: var(--bx-bg-3);
  border: 1px solid var(--bx-line);
  border-radius: var(--bx-radius-sm);
  color: var(--bx-text);
  font-size: 12.5px;
  font-family: inherit;
  outline: none;
}
.bx-sidebar__filter-input:focus { border-color: var(--bx-ink-line); }
.bx-sidebar__filter-input::placeholder { color: var(--bx-text-mut); }

.bx-sidebar__inner {}
.bx-sidebar__group { margin-bottom: 14px; }
.bx-sidebar__heading {
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--bx-text-mut);
  font-weight: 700;
  padding: 6px 8px 6px 8px;
  display: flex; align-items: center; gap: 6px;
}
.bx-sidebar__heading--top {
  color: var(--bx-text);
  font-weight: 800;
  font-size: 12px;
}
.bx-sidebar__heading--clickable {
  cursor: pointer;
  user-select: none;
  border-radius: var(--bx-radius-sm);
  transition: background .15s ease, color .15s ease;
}
.bx-sidebar__heading--clickable:hover { background: var(--bx-bg-sidebar-hover); color: var(--bx-text); }
.bx-sidebar__heading-t { font-size: 12px; color: var(--bx-text); text-transform: none; letter-spacing: 0; }
.bx-sidebar__chev {
  display: inline-flex;
  transition: transform .2s ease;
  color: var(--bx-text-mut);
}
.bx-sidebar__group.is-collapsed .bx-sidebar__chev { transform: rotate(-90deg); }
.bx-sidebar__group.is-collapsed .bx-sidebar__list--inner { display: none; }

.bx-sidebar__list { list-style: none; padding: 0; margin: 0; }
.bx-sidebar__list--inner { padding-left: 0; }
.bx-sidebar__list li { margin: 0; }
.bx-sidebar__link {
  display: block;
  padding: 6px 10px 6px 18px;
  color: var(--bx-text-2);
  font-size: 13px;
  line-height: 1.45;
  border-radius: var(--bx-radius-sm);
  transition: background .15s ease, color .15s ease;
  text-decoration: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.bx-sidebar__link:hover {
  background: var(--bx-bg-sidebar-hover);
  color: var(--bx-text);
}
.bx-sidebar__link.is-active {
  color: var(--bx-ink);
  font-weight: 600;
}
.bx-sidebar__link--cat { color: var(--bx-text-mut); font-style: italic; }

/* ===== Right rail (partner-style sidebar) ===== */
.bx-rail {
  position: sticky;
  top: var(--bx-header-h);
  align-self: start;
  max-height: calc(100vh - var(--bx-header-h));
  overflow-y: auto;
  padding: 18px 14px 40px 14px;
  background: var(--bx-bg-rail);
}
.bx-rail__inner {}
.bx-rail__head {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 10px;
  padding: 0 4px;
}
.bx-rail__head-l { color: var(--bx-text); }
.bx-rail__head-r { color: var(--bx-text-mut); font-weight: 500; }
.bx-rail__list {
  list-style: none; padding: 0; margin: 0 0 18px;
  display: grid; grid-template-columns: 1fr 1fr; gap: 6px;
}
.bx-rail__item a {
  display: flex; align-items: center; justify-content: center;
  height: 36px;
  border: 1px solid var(--bx-line);
  border-radius: var(--bx-radius-md);
  background: var(--bx-bg-card);
  color: var(--bx-text);
  font-size: 11.5px;
  font-weight: 600;
  text-align: center;
  padding: 0 6px;
  transition: border-color .15s ease, color .15s ease, background .15s ease;
}
.bx-rail__item a:hover {
  border-color: var(--bx-ink-line);
  color: var(--bx-ink);
  background: var(--bx-bg-elev);
}
.bx-rail__chip { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 100%; }

.bx-rail__promo {
  border: 1px solid var(--bx-line);
  border-radius: var(--bx-radius-md);
  background: var(--bx-bg-card);
  padding: 12px 12px 14px;
  margin-bottom: 10px;
  position: relative;
  overflow: hidden;
}
.bx-rail__promo::before {
  content: "";
  position: absolute; top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--bx-ink);
}
.bx-rail__promo--alt::before {
  background: linear-gradient(90deg, var(--bx-ink), #DC2939);
}
.bx-rail__promo-h {
  font-weight: 700; font-size: 13px; color: var(--bx-text);
  margin-bottom: 6px;
}
.bx-rail__promo-p {
  margin: 0 0 8px;
  font-size: 11.5px; line-height: 1.55;
  color: var(--bx-text-mut);
}
.bx-rail__promo-l {
  font-size: 12px; font-weight: 600;
  color: var(--bx-ink);
}
.bx-rail__promo-l:hover { color: var(--bx-link-hover); }

/* ===== Hero (home) ===== */
.bx-hero {
  max-width: var(--bx-shell-max);
  margin: 0 auto;
  padding: 60px 22px 40px;
  border-bottom: 1px solid var(--bx-line);
  background:
    radial-gradient(ellipse at 30% 0%, rgba(251, 191, 36, 0.08), transparent 55%),
    radial-gradient(ellipse at 80% 30%, rgba(251, 191, 36, 0.05), transparent 55%);
}
.bx-hero__inner {
  max-width: 880px;
  margin: 0 auto;
  text-align: center;
}
.bx-hero__kicker {
  display: inline-block;
  font-family: var(--bx-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--bx-ink);
  text-transform: uppercase;
  margin-bottom: 16px;
  padding: 4px 10px;
  border: 1px solid var(--bx-ink-line);
  border-radius: var(--bx-radius-pill);
  background: var(--bx-ink-tint);
}
.bx-hero__h1 {
  font-size: 44px;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--bx-text);
  margin: 0 0 16px;
}
.bx-hero__sub {
  font-size: 16px;
  line-height: 1.6;
  color: var(--bx-text-2);
  margin: 0 0 26px;
  max-width: 720px;
  margin-left: auto; margin-right: auto;
}
.bx-hero__cta {
  display: inline-flex; gap: 10px;
  margin-bottom: 28px;
  flex-wrap: wrap;
  justify-content: center;
}
.bx-btn {
  display: inline-flex; align-items: center; gap: 6px;
  height: 38px;
  padding: 0 18px;
  border-radius: var(--bx-radius-md);
  font-size: 14px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background .15s ease, border-color .15s ease, color .15s ease;
}
.bx-btn--primary {
  background: var(--bx-ink);
  color: #0B0F19;
  border-color: var(--bx-ink);
  box-shadow: 0 0 0 1px rgba(0,0,0,0.2), 0 0 24px rgba(251, 191, 36, 0.32);
}
.bx-btn--primary:hover { background: var(--bx-ink-2); color: #0B0F19; }
.bx-btn--ghost {
  background: transparent;
  color: var(--bx-text);
  border-color: var(--bx-line);
}
.bx-btn--ghost:hover { border-color: var(--bx-text-mut); color: var(--bx-text); }

.bx-hero-search {
  display: flex; align-items: center; gap: 10px;
  max-width: 560px;
  margin: 0 auto 22px;
  height: 48px;
  padding: 0 16px;
  background: var(--bx-bg-3);
  border: 1px solid var(--bx-line);
  border-radius: var(--bx-radius-md);
}
.bx-hero-search:focus-within { border-color: var(--bx-ink-line); box-shadow: 0 0 0 3px var(--bx-ink-tint); }
.bx-hero-search__icon { display: inline-flex; color: var(--bx-text-mut); }
.bx-hero-search__input {
  flex: 1;
  background: transparent;
  border: 0;
  outline: none;
  color: var(--bx-text);
  font-size: 15px;
  font-family: inherit;
}
.bx-hero-search__input::placeholder { color: var(--bx-text-mut); }
.bx-hero-search__kbd {
  font-family: var(--bx-mono);
  font-size: 11px;
  padding: 2px 7px;
  border-radius: var(--bx-radius-xs);
  border: 1px solid var(--bx-line);
  color: var(--bx-text-mut);
}

.bx-hero__pillrow {
  display: inline-flex; flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}
.bx-hero__pill {
  display: inline-flex; align-items: center; gap: 6px;
  height: 26px;
  padding: 0 10px;
  border-radius: var(--bx-radius-pill);
  background: var(--bx-bg-card);
  border: 1px solid var(--bx-line);
  color: var(--bx-text-2);
  font-size: 12px;
}
.bx-hero__pill-dot {
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--bx-ink);
}

@media (max-width: 720px) {
  .bx-hero { padding: 40px 16px 28px; }
  .bx-hero__h1 { font-size: 32px; }
  .bx-hero__sub { font-size: 14.5px; }
}

/* ===== Section blocks ===== */
.bx-section {
  max-width: var(--bx-shell-max);
  margin: 0 auto;
  padding: 56px 22px;
  border-bottom: 1px solid var(--bx-line);
}
.bx-section--alt { background: var(--bx-bg-2); }
.bx-section__head {
  max-width: 880px;
  margin: 0 auto 36px;
  text-align: left;
}
.bx-section__kicker {
  display: inline-block;
  font-family: var(--bx-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--bx-ink);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.bx-section__h {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.015em;
  line-height: 1.2;
  color: var(--bx-text);
  margin: 0 0 10px;
}
.bx-section__p {
  font-size: 15px;
  line-height: 1.65;
  color: var(--bx-text-2);
  margin: 0;
  max-width: 760px;
}
@media (max-width: 720px) {
  .bx-section { padding: 36px 16px; }
  .bx-section__h { font-size: 22px; }
}

/* ===== Card grid ===== */
.bx-cardgrid {
  display: grid;
  gap: 16px;
  max-width: 1100px;
  margin: 0 auto;
}
.bx-cardgrid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.bx-cardgrid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (max-width: 980px) {
  .bx-cardgrid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 660px) {
  .bx-cardgrid--3, .bx-cardgrid--2 { grid-template-columns: 1fr; }
}

.bx-card {
  position: relative;
  display: flex; flex-direction: column;
  background: var(--bx-bg-card);
  border: 1px solid var(--bx-line);
  border-radius: var(--bx-radius-md);
  padding: 22px 22px 18px;
  text-decoration: none;
  color: var(--bx-text);
  transition: border-color .15s ease, transform .15s ease, box-shadow .15s ease;
  overflow: hidden;
}
.bx-card::after {
  content: "";
  position: absolute; right: -40px; top: -40px;
  width: 120px; height: 120px;
  background: radial-gradient(circle at 50% 50%, var(--bx-ink-glow), transparent 65%);
  opacity: 0; transition: opacity .25s ease;
  pointer-events: none;
}
.bx-card:hover {
  border-color: var(--bx-ink-line);
  transform: translateY(-1px);
}
.bx-card:hover::after { opacity: 1; }
.bx-card.is-featured {
  border-color: var(--bx-ink-line);
}
.bx-card.is-featured::before {
  content: "";
  position: absolute; left: 0; top: 0; bottom: 0;
  width: 3px; background: var(--bx-ink);
}
.bx-card__badge {
  font-family: var(--bx-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--bx-text-mut);
  font-weight: 600;
  margin-bottom: 14px;
}
.bx-card__icon {
  display: inline-flex;
  width: 36px; height: 36px;
  align-items: center; justify-content: center;
  border-radius: var(--bx-radius);
  background: var(--bx-ink-tint);
  color: var(--bx-ink);
  margin-bottom: 14px;
}
.bx-card__title {
  font-size: 17px;
  font-weight: 700;
  color: var(--bx-text);
  margin-bottom: 6px;
}
.bx-card__desc {
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--bx-text-2);
  margin: 0 0 12px;
  flex: 1;
}
.bx-card__list {
  list-style: none; padding: 0; margin: 0 0 12px;
  border-top: 1px dashed var(--bx-line);
  padding-top: 10px;
}
.bx-card__list li {
  font-size: 12.5px;
  color: var(--bx-text-mut);
  padding: 3px 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.bx-card__list-arr { color: var(--bx-ink); margin-right: 6px; }
.bx-card__more {
  font-family: var(--bx-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--bx-ink);
  text-transform: uppercase;
}
.bx-card__count {
  font-family: var(--bx-mono);
  font-size: 12px;
  color: var(--bx-text-mut);
  margin-top: 8px;
}

/* ===== Workflow / Flow numbered strip ===== */
.bx-flow {
  list-style: none; padding: 0; margin: 0;
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  position: relative;
}
.bx-flow::before {
  content: "";
  position: absolute;
  top: 36px;
  left: 8%; right: 8%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--bx-ink-line), transparent);
}
.bx-flow__step {
  background: var(--bx-bg-card);
  border: 1px solid var(--bx-line);
  border-radius: var(--bx-radius-md);
  padding: 18px;
  position: relative;
  z-index: 1;
}
.bx-flow__no {
  font-family: var(--bx-mono);
  font-size: 22px;
  font-weight: 800;
  color: var(--bx-ink);
  letter-spacing: 0.02em;
  margin-bottom: 8px;
  text-shadow: 0 0 12px rgba(251, 191, 36, 0.25);
}
.bx-flow__t {
  font-size: 14.5px;
  font-weight: 700;
  color: var(--bx-text);
  margin-bottom: 6px;
}
.bx-flow__d {
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--bx-text-mut);
  margin: 0;
}
@media (max-width: 880px) {
  .bx-flow { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .bx-flow::before { display: none; }
}
@media (max-width: 540px) {
  .bx-flow { grid-template-columns: 1fr; }
}

/* ===== Reference list (more topics) ===== */
.bx-reflist {
  list-style: none; padding: 0; margin: 0;
  max-width: 1100px;
  margin: 0 auto;
  border-top: 1px solid var(--bx-line);
}
.bx-reflist li {
  display: grid; grid-template-columns: 200px 1fr;
  align-items: baseline; gap: 18px;
  padding: 14px 8px;
  border-bottom: 1px solid var(--bx-line);
}
.bx-reflist li a strong {
  color: var(--bx-text);
  font-weight: 700;
}
.bx-reflist li a:hover strong { color: var(--bx-ink); }
.bx-reflist__desc { color: var(--bx-text-mut); font-size: 13px; line-height: 1.55; }
@media (max-width: 720px) {
  .bx-reflist li { grid-template-columns: 1fr; gap: 4px; }
}

/* ===== Post list ===== */
.bx-postlist { list-style: none; padding: 0; margin: 0; max-width: 1100px; margin: 0 auto; }
.bx-postlist__item {
  padding: 16px 8px;
  border-bottom: 1px solid var(--bx-line);
}
.bx-postlist__item:last-child { border-bottom: 0; }
.bx-postlist__title {
  display: inline-block;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--bx-text);
  text-decoration: none;
  margin-bottom: 4px;
}
.bx-postlist__title:hover { color: var(--bx-ink); text-decoration: underline; }
.bx-postlist__meta {
  display: flex; gap: 10px; align-items: center; flex-wrap: wrap;
  font-size: 12px;
  color: var(--bx-text-mut);
  font-family: var(--bx-mono);
  margin-bottom: 4px;
}
.bx-postlist__chip {
  font-family: var(--bx-font);
  display: inline-block;
  padding: 1px 7px;
  border-radius: var(--bx-radius-xs);
  background: var(--bx-bg-3);
  color: var(--bx-text-2);
  font-size: 11.5px;
}
.bx-postlist__desc {
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--bx-text-2);
  margin: 4px 0 0;
}
.bx-viewall {
  text-align: center;
  margin-top: 24px;
  font-family: var(--bx-mono);
  font-size: 13px;
}
.bx-viewall a { color: var(--bx-ink); font-weight: 600; }

/* ===== FAQ ===== */
.bx-faq {
  max-width: 880px;
  margin: 0 auto;
}
.bx-faq__item {
  border: 1px solid var(--bx-line);
  border-radius: var(--bx-radius-md);
  background: var(--bx-bg-card);
  margin-bottom: 10px;
  overflow: hidden;
}
.bx-faq__item[open] { border-color: var(--bx-ink-line); }
.bx-faq__q {
  cursor: pointer;
  list-style: none;
  padding: 14px 18px;
  display: flex; align-items: flex-start; gap: 12px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--bx-text);
}
.bx-faq__q::-webkit-details-marker { display: none; }
.bx-faq__q-mark {
  font-family: var(--bx-mono);
  display: inline-flex; align-items: center; justify-content: center;
  width: 22px; height: 22px;
  border-radius: var(--bx-radius-xs);
  background: var(--bx-ink-tint);
  color: var(--bx-ink);
  font-size: 12px; font-weight: 800;
  flex-shrink: 0;
}
.bx-faq__a {
  padding: 0 18px 16px 52px;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--bx-text-2);
}
.bx-faq__a p { margin: 0 0 8px; }
.bx-faq__a p:last-child { margin: 0; }

/* ===== Article (post / page) ===== */
.bx-article {
  display: grid;
  grid-template-columns: minmax(0, var(--bx-content-max)) var(--bx-toc-w);
  gap: 40px;
  align-items: start;
}
.bx-article > .bx-crumb,
.bx-article > .bx-article__head,
.bx-article > .bx-prevnext,
.bx-article > .bx-article__foot {
  grid-column: 1 / -1;
}
.bx-article > .bx-article__body {
  display: contents;
}
.bx-article--page {
  grid-template-columns: 1fr;
  max-width: var(--bx-content-max);
  margin: 0 auto;
}
@media (max-width: 1100px) {
  .bx-article {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .bx-toc { display: none; }
}

.bx-crumb {
  display: flex; align-items: center; flex-wrap: wrap; gap: 6px;
  font-size: 12.5px;
  color: var(--bx-text-mut);
  margin-bottom: 22px;
  font-family: var(--bx-mono);
}
.bx-crumb a { color: var(--bx-text-mut); text-decoration: none; }
.bx-crumb a:hover { color: var(--bx-ink); }
.bx-crumb__sep { color: var(--bx-text-soft); }
.bx-crumb__current { color: var(--bx-text); font-weight: 600; }

.bx-article__head {
  margin-bottom: 28px;
  padding-bottom: 8px;
}
.bx-article__kicker {
  font-family: var(--bx-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--bx-ink);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.bx-article__title-row {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 16px;
  margin-bottom: 8px;
}
.bx-article__h1 {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.18;
  color: var(--bx-text);
  margin: 0;
  flex: 1;
  min-width: 0;
}
.bx-article__lede {
  font-size: 15.5px;
  line-height: 1.65;
  color: var(--bx-text-2);
  margin: 12px 0 14px;
}
.bx-article__meta {
  display: flex; align-items: center; flex-wrap: wrap; gap: 10px;
  font-size: 12.5px;
  color: var(--bx-text-mut);
  font-family: var(--bx-mono);
}
.bx-article__meta-item {
  display: inline-flex; align-items: center; gap: 5px;
}
.bx-article__meta-sep { color: var(--bx-text-soft); }

.bx-copybtn {
  display: inline-flex; align-items: center; gap: 6px;
  height: 30px;
  padding: 0 12px;
  border-radius: var(--bx-radius-pill);
  border: 1px solid var(--bx-line);
  background: var(--bx-bg-card);
  color: var(--bx-text-2);
  font-size: 12px; font-weight: 500;
  cursor: pointer;
  flex-shrink: 0;
}
.bx-copybtn:hover { border-color: var(--bx-ink-line); color: var(--bx-text); }
.bx-copybtn__ic { display: inline-flex; }
.bx-copybtn__ar { font-size: 9px; color: var(--bx-text-mut); }

.bx-chip {
  display: inline-block;
  padding: 1px 7px;
  border-radius: var(--bx-radius-xs);
  background: var(--bx-bg-3);
  color: var(--bx-text-2);
  font-size: 11.5px;
  font-family: var(--bx-font);
  text-decoration: none;
}
.bx-chip:hover { color: var(--bx-ink); }

/* ===== Prose (article body) ===== */
.bx-prose {
  max-width: var(--bx-content-max);
  font-size: 15px;
  line-height: 1.78;
  color: var(--bx-text);
  word-wrap: break-word;
}
.bx-prose h2, .bx-prose h3, .bx-prose h4 {
  color: var(--bx-text);
  font-weight: 800;
  letter-spacing: -0.01em;
  scroll-margin-top: 80px;
}
.bx-prose h2 {
  font-size: 22px;
  margin: 36px 0 12px;
  padding-bottom: 6px;
}
.bx-prose h3 {
  font-size: 17px;
  margin: 28px 0 10px;
}
.bx-prose h4 { font-size: 15px; margin: 20px 0 8px; }
.bx-prose h2 a, .bx-prose h3 a, .bx-prose h4 a { color: inherit; text-decoration: none; }
.bx-prose h2:hover a::after, .bx-prose h3:hover a::after {
  content: " #"; color: var(--bx-ink);
}

.bx-prose p { margin: 0 0 16px; }
.bx-prose strong { color: var(--bx-text); font-weight: 700; }
.bx-prose em { color: var(--bx-text); font-style: italic; }

.bx-prose a {
  color: var(--bx-ink);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}
.bx-prose a:hover { color: var(--bx-link-hover); }

.bx-prose ul, .bx-prose ol {
  margin: 0 0 18px;
  padding-left: 22px;
}
.bx-prose ul li, .bx-prose ol li { margin: 4px 0; }
.bx-prose ul li::marker { color: var(--bx-ink); }
.bx-prose ol li::marker { color: var(--bx-ink); font-family: var(--bx-mono); }

.bx-prose blockquote {
  margin: 20px 0;
  padding: 12px 16px;
  border-left: 3px solid var(--bx-ink);
  background: var(--bx-callout-warn);
  color: var(--bx-text-2);
  border-radius: 0 var(--bx-radius-sm) var(--bx-radius-sm) 0;
}
.bx-prose blockquote p { margin: 0 0 6px; }
.bx-prose blockquote p:last-child { margin: 0; }

/* Inline code */
.bx-prose :not(pre) > code {
  font-family: var(--bx-mono);
  font-size: 0.88em;
  padding: 2px 6px;
  border-radius: var(--bx-radius-xs);
  background: var(--bx-bg-3);
  border: 1px solid var(--bx-line);
  color: var(--bx-ink);
}

/* Code blocks (with language tab + copy button) */
.bx-prose pre {
  position: relative;
  margin: 20px 0;
  padding: 14px 16px;
  background: var(--bx-bg-code);
  border: 1px solid var(--bx-line);
  border-radius: var(--bx-radius-md);
  overflow-x: auto;
  font-family: var(--bx-mono);
  font-size: 13px;
  line-height: 1.7;
  color: #E5E7EB;
}
.bx-prose pre code {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  padding: 0;
  background: transparent;
  border: 0;
}
.bx-codeblock { position: relative; margin: 20px 0; }
.bx-codeblock__tab {
  display: flex; align-items: center; justify-content: space-between;
  height: 32px;
  padding: 0 12px;
  background: var(--bx-bg-code-tab);
  border: 1px solid var(--bx-line);
  border-bottom: 0;
  border-radius: var(--bx-radius-md) var(--bx-radius-md) 0 0;
  font-family: var(--bx-mono);
  font-size: 11.5px;
  color: var(--bx-text-mut);
}
.bx-codeblock__tab-l { color: var(--bx-text); font-weight: 600; }
.bx-codeblock__copy {
  display: inline-flex; align-items: center; gap: 4px;
  background: transparent; border: 0;
  color: var(--bx-text-mut);
  cursor: pointer; font-size: 11px;
  padding: 4px 8px;
  border-radius: var(--bx-radius-xs);
}
.bx-codeblock__copy:hover { color: var(--bx-ink); background: var(--bx-bg-3); }
.bx-codeblock__copy.is-ok { color: var(--bx-ink); }
.bx-codeblock pre {
  margin: 0;
  border-top-left-radius: 0;
  border-top-right-radius: 0;
}

/* Tables */
.bx-prose table {
  border-collapse: collapse;
  width: 100%;
  margin: 20px 0;
  font-size: 13.5px;
  border: 1px solid var(--bx-line);
  border-radius: var(--bx-radius-sm);
  overflow: hidden;
}
.bx-prose thead { background: var(--bx-bg-3); }
.bx-prose th {
  padding: 10px 12px;
  text-align: left;
  font-weight: 700;
  color: var(--bx-text);
  border-bottom: 1px solid var(--bx-line);
}
.bx-prose td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--bx-line-2);
  color: var(--bx-text-2);
}
.bx-prose tbody tr:last-child td { border-bottom: 0; }
.bx-prose tbody tr:hover { background: var(--bx-bg-3); }

/* Heading anchors injected by addHeadingAnchors filter */
.bx-prose h2 .anchor, .bx-prose h3 .anchor {
  font-weight: 400; opacity: 0;
  margin-left: 6px;
  font-size: 0.85em;
  color: var(--bx-text-mut);
  text-decoration: none;
}
.bx-prose h2:hover .anchor, .bx-prose h3:hover .anchor {
  opacity: 1; color: var(--bx-ink);
}

/* ===== TOC ===== */
.bx-toc {
  position: sticky;
  top: calc(var(--bx-header-h) + 24px);
  align-self: start;
  max-height: calc(100vh - var(--bx-header-h) - 32px);
  overflow-y: auto;
  font-size: 12.5px;
  padding-left: 14px;
  border-left: 1px solid var(--bx-line);
}
.bx-toc__inner {}
.bx-toc__head {
  font-size: 12.5px;
  font-weight: 700;
  color: var(--bx-text);
  margin: 0 0 8px;
  letter-spacing: 0.01em;
}
.bx-toc__list { list-style: none; padding: 0; margin: 0 0 18px; }
.bx-toc__item { margin: 0; }
.bx-toc__item a {
  display: block;
  padding: 4px 8px;
  color: var(--bx-text-mut);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color .15s ease, border-color .15s ease;
  line-height: 1.45;
  font-size: 12.5px;
}
.bx-toc__item a:hover { color: var(--bx-text); }
.bx-toc__item a.is-active {
  color: var(--bx-ink);
  border-left-color: var(--bx-ink);
  font-weight: 600;
}
.bx-toc__item--lv3 a { padding-left: 18px; font-size: 12px; }
.bx-toc__item--lv4 a { padding-left: 28px; font-size: 11.5px; }
.bx-toc__more { margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--bx-line); }

/* ===== Prev / Next ===== */
.bx-prevnext {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 36px 0 24px;
  padding-top: 28px;
  border-top: 1px solid var(--bx-line);
}
.bx-prevnext__item {
  display: flex; flex-direction: column; gap: 4px;
  padding: 14px 16px;
  border: 1px solid var(--bx-line);
  border-radius: var(--bx-radius-md);
  background: var(--bx-bg-card);
  color: var(--bx-text);
  text-decoration: none;
  transition: border-color .15s ease, color .15s ease;
}
.bx-prevnext__item:hover { border-color: var(--bx-ink-line); }
.bx-prevnext__item:hover .bx-prevnext__t { color: var(--bx-ink); }
.bx-prevnext__next { text-align: right; }
.bx-prevnext__lab {
  font-family: var(--bx-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--bx-text-mut);
  text-transform: uppercase;
}
.bx-prevnext__t {
  font-size: 14px; font-weight: 600;
  color: var(--bx-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
@media (max-width: 660px) {
  .bx-prevnext { grid-template-columns: 1fr; }
}

.bx-article__foot {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--bx-line);
}
.bx-article__editline {
  margin-bottom: 14px;
}
.bx-editlink {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 12px;
  border: 1px solid var(--bx-line);
  border-radius: var(--bx-radius-sm);
  font-size: 12.5px;
  color: var(--bx-text-2);
  text-decoration: none;
}
.bx-editlink:hover { color: var(--bx-ink); border-color: var(--bx-ink-line); }

/* ===== Pager ===== */
.bx-pager {
  display: flex; align-items: center; justify-content: center; gap: 6px; flex-wrap: wrap;
  margin: 32px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--bx-line);
}
.bx-pager__btn, .bx-pager__num {
  display: inline-flex; align-items: center; justify-content: center;
  height: 32px; padding: 0 12px;
  border: 1px solid var(--bx-line);
  border-radius: var(--bx-radius-sm);
  background: var(--bx-bg-card);
  color: var(--bx-text-2);
  font-size: 12.5px;
  text-decoration: none;
  font-family: var(--bx-mono);
}
.bx-pager__num { min-width: 32px; padding: 0 10px; }
.bx-pager__btn:hover, .bx-pager__num:hover {
  color: var(--bx-ink); border-color: var(--bx-ink-line);
}
.bx-pager__num.is-current {
  background: var(--bx-ink); color: #0B0F19;
  border-color: var(--bx-ink); font-weight: 700;
}
.bx-pager__btn.is-disabled, .bx-pager__num.is-disabled {
  opacity: .4; pointer-events: none;
}

/* ===== Footer ===== */
.bx-footer {
  background: var(--bx-bg);
  border-top: 1px solid var(--bx-line);
  margin-top: 24px;
}
.bx-footer__inner {
  max-width: var(--bx-shell-max);
  margin: 0 auto;
  padding: 36px 22px 20px;
}
.bx-footer__cols {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 36px;
  padding-bottom: 28px;
}
.bx-footer__col h, .bx-footer__h {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--bx-text);
  text-transform: uppercase;
  margin: 0 0 12px;
}
.bx-footer__col ul {
  list-style: none; padding: 0; margin: 0;
}
.bx-footer__col li {
  margin: 6px 0;
}
.bx-footer__col a {
  color: var(--bx-text-mut);
  font-size: 13px;
  text-decoration: none;
}
.bx-footer__col a:hover { color: var(--bx-ink); }
.bx-footer__lang { display: flex; flex-wrap: wrap; gap: 6px 12px; }
.bx-footer__lang a.is-current { color: var(--bx-ink); font-weight: 600; }

.bx-footer__bottom {
  border-top: 1px solid var(--bx-line);
  padding-top: 20px;
  display: flex; flex-wrap: wrap; gap: 12px;
  align-items: center; justify-content: space-between;
  font-size: 12.5px;
}
.bx-footer__brand {
  display: flex; align-items: center; gap: 12px;
  color: var(--bx-text-mut);
}
.bx-footer__logo {
  font-family: var(--bx-mono);
  font-weight: 800;
  color: var(--bx-text);
}
.bx-footer__legal { display: flex; gap: 14px; }
.bx-footer__legal a { color: var(--bx-text-mut); }
.bx-footer__legal a:hover { color: var(--bx-ink); }
.bx-footer__risk {
  width: 100%;
  margin-top: 10px;
  padding-top: 12px;
  border-top: 1px dashed var(--bx-line);
  color: var(--bx-text-soft);
  font-size: 11.5px;
  line-height: 1.55;
}
@media (max-width: 880px) {
  .bx-footer__cols { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
}
@media (max-width: 540px) {
  .bx-footer__cols { grid-template-columns: 1fr; gap: 16px; }
}

/* ===== 404 ===== */
.bx-404 {
  max-width: 540px;
  margin: 80px auto;
  padding: 40px 24px;
  text-align: center;
}
.bx-404__code {
  font-family: var(--bx-mono);
  font-size: 96px;
  font-weight: 800;
  color: var(--bx-ink);
  line-height: 1;
  letter-spacing: -0.04em;
  text-shadow: 0 0 36px rgba(251, 191, 36, 0.4);
  margin-bottom: 20px;
}
.bx-404__title {
  font-size: 22px;
  font-weight: 700;
  color: var(--bx-text);
  margin: 0 0 12px;
}
.bx-404__body {
  color: var(--bx-text-2);
  font-size: 14px;
  margin: 0 0 24px;
}

/* ===== Mobile sidebar drawer ===== */
@media (max-width: 900px) {
  .bx-sidebar.is-open {
    display: block;
    position: fixed;
    top: var(--bx-header-h);
    left: 0; right: 0; bottom: 0;
    z-index: 90;
    background: var(--bx-bg-sidebar);
    overflow-y: auto;
    padding: 18px 16px 60px;
  }
  body.bx-nav-open { overflow: hidden; }
}

/* ===== Misc utility ===== */
.bx-divider {
  border: 0;
  border-top: 1px solid var(--bx-line);
  margin: 28px 0;
}

/* keep raw HTML pre styling sane when used inside cards/sidebars */
.bx-card pre, .bx-sidebar pre, .bx-rail pre { background: transparent; border: 0; padding: 0; margin: 0; }

/* Hide scrollbars on side panels for cleaner look (still scrollable) */
.bx-sidebar::-webkit-scrollbar,
.bx-toc::-webkit-scrollbar,
.bx-rail::-webkit-scrollbar { width: 6px; }
.bx-sidebar::-webkit-scrollbar-thumb,
.bx-toc::-webkit-scrollbar-thumb,
.bx-rail::-webkit-scrollbar-thumb { background: var(--bx-line); border-radius: 3px; }
.bx-sidebar::-webkit-scrollbar-thumb:hover,
.bx-toc::-webkit-scrollbar-thumb:hover,
.bx-rail::-webkit-scrollbar-thumb:hover { background: var(--bx-text-soft); }

/* When the article shell is a page (no sidebar), keep prose centered */
.bx-article--page .bx-prose { margin: 0 auto; }

/* Sidebar headings spacing for first item */
.bx-sidebar__group:first-child { margin-top: 0; }

/* In light theme, reduce shadow intensity */
[data-theme="light"] .bx-card::after {
  background: radial-gradient(circle at 50% 50%, rgba(180, 83, 9, 0.18), transparent 65%);
}
[data-theme="light"] .bx-brand__name-b { text-shadow: none; }
[data-theme="light"] .bx-flow__no { text-shadow: none; }
[data-theme="light"] .bx-404__code { text-shadow: 0 0 24px rgba(180, 83, 9, 0.25); }

/* ===== Hero pulse / decorative ===== */
.bx-hero__pulse {
  display: block;
  margin: 28px auto 0;
  width: 280px;
  color: var(--bx-ink);
  opacity: .5;
}

/* ===== Print styles ===== */
@media print {
  .bx-header, .bx-sidebar, .bx-rail, .bx-toc, .bx-footer, .bx-prevnext, .bx-pager { display: none !important; }
  .bx-shell { display: block; padding: 0; }
  .bx-main { border: 0; padding: 0; }
  .bx-article { display: block; }
}

/* ===== Dark/light specific tweaks ===== */
[data-theme="light"] .bx-header__login:hover { background: rgba(180, 83, 9, 0.08); }
[data-theme="light"] .bx-card__icon { background: rgba(180, 83, 9, 0.1); color: #B45309; }
[data-theme="light"] .bx-section--alt { background: var(--bx-bg-2); }
[data-theme="light"] .bx-prose :not(pre) > code { color: #B45309; }
[data-theme="light"] .bx-prose pre { background: #0B1020; color: #E5E7EB; border-color: #182135; }
[data-theme="light"] .bx-codeblock__tab { background: #131A2C; color: #B8BEC9; border-color: #182135; }
[data-theme="light"] .bx-codeblock__tab-l { color: #FFFFFF; }
[data-theme="light"] .bx-codeblock__copy { color: #B8BEC9; }
[data-theme="light"] .bx-codeblock__copy:hover { color: #FBBF24; background: #1A2336; }
[data-theme="light"] .bx-prose blockquote { background: rgba(180, 83, 9, 0.06); }
[data-theme="light"] .bx-pager__num.is-current { color: #FFF; }

/* Make sure inline tags inside heading anchors don't break layout */
.bx-prose h2, .bx-prose h3 { display: flex; flex-wrap: wrap; align-items: baseline; }
.bx-prose h2 > a:first-child, .bx-prose h3 > a:first-child { color: inherit; }

/* Slight tweak for title row */
@media (max-width: 720px) {
  .bx-article__title-row { flex-direction: column; align-items: stretch; }
  .bx-copybtn { align-self: flex-start; }
  .bx-article__h1 { font-size: 26px; }
  .bx-prose { font-size: 14.5px; line-height: 1.75; }
  .bx-prose h2 { font-size: 19px; }
  .bx-prose h3 { font-size: 16px; }
}

/* Page kicker for /about, /disclaimer, /download */
.bx-article--page .bx-article__kicker { margin-bottom: 6px; }

/* Small touch — sticky header underline glow when scrolled */
.bx-header::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--bx-ink-line), transparent);
  opacity: .55;
  pointer-events: none;
}
.bx-header { position: sticky; }

/* Final spacer so footer never butts against last section on home */
.bx-section:last-of-type { padding-bottom: 72px; }

/* "Become a Partner" hover style on rail head */
.bx-rail__head-r:hover { color: var(--bx-ink); cursor: default; }

/* Ensure focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--bx-ink);
  outline-offset: 2px;
  border-radius: 3px;
}