/* BabianWave — Django-style documentation
 * Brand: cyan teal #06B6D4 (wave)
 * Layout: top dark teal header + warm-tone alert banner + main content
 *         + right aggregated sidebar (Browse / Where you are / Categories / Quick links)
 *         + deep teal multi-column footer.
 * Signature: large serif headings with ¶ pilcrow anchor, dense category trees,
 *            understated academic look, mostly flat surfaces, minimal shadows.
 */

:root {
  /* Brand palette — cyan/teal wave */
  --bw-teal: #06B6D4;
  --bw-teal-2: #0891B2;
  --bw-teal-3: #0E7490;
  --bw-teal-deep: #155E75;
  --bw-teal-bg: #ECFEFF;
  --bw-teal-line: #A5F3FC;
  --bw-teal-soft: #67E8F9;

  /* Neutral / academic */
  --bw-bg: #FFFFFF;
  --bw-bg-alt: #F4F6F8;
  --bw-bg-muted: #ECEFF1;
  --bw-bg-code: #F1F4F6;
  --bw-bg-callout: #FFF7ED;
  --bw-bg-warning: #FEF3C7;

  --bw-text: #1F2937;
  --bw-text-2: #374151;
  --bw-text-mut: #5B6470;
  --bw-text-soft: #8A93A1;
  --bw-text-inv: #FFFFFF;

  --bw-line: #D8DEE5;
  --bw-line-soft: #E6EAF0;

  --bw-link: #0E7490;
  --bw-link-hover: #155E75;
  --bw-link-visited: #6D28D9;

  /* Banner (warm pink/red, like Django announcement strip) */
  --bw-banner-bg: #FEE2E2;
  --bw-banner-bg2: #FECACA;
  --bw-banner-text: #7F1D1D;
  --bw-banner-line: #FCA5A5;

  --bw-radius: 3px;
  --bw-radius-md: 5px;
  --bw-radius-lg: 8px;

  --bw-shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --bw-shadow-md: 0 6px 14px rgba(15, 23, 42, 0.07);

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

  --bw-banner-h: 36px;
  --bw-headtop-h: 50px;
  --bw-headtitle-h: 64px;
  --bw-shell-max: 1280px;
  --bw-side-w: 240px;
  --bw-toc-w: 200px;
}

[data-theme="dark"] {
  --bw-bg: #0F172A;
  --bw-bg-alt: #1E293B;
  --bw-bg-muted: #1E293B;
  --bw-bg-code: #131E33;
  --bw-bg-callout: #2A1F12;
  --bw-bg-warning: #2A1F12;
  --bw-text: #E5E7EB;
  --bw-text-2: #CBD5E1;
  --bw-text-mut: #94A3B8;
  --bw-text-soft: #64748B;
  --bw-line: #1E293B;
  --bw-line-soft: #1A2538;
  --bw-link: #67E8F9;
  --bw-link-hover: #A5F3FC;
  --bw-link-visited: #C4B5FD;
  --bw-teal-bg: rgba(6, 182, 212, 0.08);
  --bw-teal-line: rgba(6, 182, 212, 0.3);
  --bw-banner-bg: #4C1D1D;
  --bw-banner-bg2: #5B1F1F;
  --bw-banner-text: #FECACA;
  --bw-banner-line: #7F1D1D;
}

/* ========== Reset ========== */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body.bw-body {
  font-family: var(--bw-font-sans);
  font-size: 15px;
  line-height: 1.7;
  color: var(--bw-text);
  background: var(--bw-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, svg { max-width: 100%; vertical-align: middle; }
a { color: var(--bw-link); text-decoration: none; }
a:hover { color: var(--bw-link-hover); text-decoration: underline; }
button { font-family: inherit; }

/* ========== Top warm alert banner (Django signature) ========== */
.bw-banner {
  background: linear-gradient(180deg, var(--bw-banner-bg) 0%, var(--bw-banner-bg2) 100%);
  border-bottom: 1px solid var(--bw-banner-line);
  color: var(--bw-banner-text);
  font-size: 13px;
  height: var(--bw-banner-h);
  display: flex; align-items: center; justify-content: center;
}
.bw-banner__inner {
  display: flex; align-items: center; gap: 8px;
  max-width: var(--bw-shell-max);
  padding: 0 22px;
  text-align: center;
}
.bw-banner__icon {
  display: inline-flex; color: var(--bw-banner-text);
}
.bw-banner__text { font-weight: 500; line-height: 1.3; }

/* ========== Header — top bar (deep teal block, Django-style) ========== */
.bw-header {
  background: var(--bw-bg);
  border-bottom: 1px solid var(--bw-line);
  position: relative;
}
.bw-header__top {
  background: linear-gradient(180deg, var(--bw-teal-deep) 0%, var(--bw-teal-3) 100%);
  color: #E0F7FA;
  height: var(--bw-headtop-h);
}
.bw-header__inner {
  max-width: var(--bw-shell-max);
  margin: 0 auto;
  padding: 0 22px;
  height: 100%;
  display: flex; align-items: center; gap: 14px;
}

.bw-brand {
  display: inline-flex; align-items: center; gap: 8px;
  text-decoration: none;
  color: #FFFFFF;
  flex-shrink: 0;
}
.bw-brand:hover { text-decoration: none; color: #FFFFFF; }
.bw-brand__mark {
  display: inline-flex;
  width: 32px; height: 32px;
  align-items: center; justify-content: center;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 4px;
  padding: 1px;
}
.bw-brand__group { display: inline-flex; flex-direction: column; line-height: 1.05; }
.bw-brand__name {
  font-family: var(--bw-font-serif);
  font-size: 19px;
  font-weight: 700;
  color: #FFFFFF;
  letter-spacing: -0.01em;
}
.bw-brand__sub {
  font-size: 11px;
  color: var(--bw-teal-soft);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 500;
  font-family: var(--bw-font-sans);
}

.bw-topnav {
  display: flex; align-items: center; gap: 0;
  margin-left: 12px;
}
.bw-topnav__item {
  display: inline-flex; align-items: center;
  height: var(--bw-headtop-h);
  padding: 0 11px;
  font-size: 13px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  white-space: nowrap;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  position: relative;
}
.bw-topnav__item:hover {
  color: #FFFFFF;
  text-decoration: none;
  background: rgba(255, 255, 255, 0.07);
}
.bw-topnav__item.is-active {
  color: #FFFFFF;
  background: rgba(255, 255, 255, 0.12);
  font-weight: 600;
}
.bw-topnav__item.is-active::after {
  content: "";
  position: absolute; left: 8px; right: 8px; bottom: 0;
  height: 3px;
  background: var(--bw-teal-soft);
  border-radius: 2px 2px 0 0;
}

.bw-search {
  position: relative;
  flex: 1;
  min-width: 0;
  max-width: 320px;
  margin-left: auto;
}
.bw-search__label {
  position: absolute; left: 9px; top: 50%; transform: translateY(-50%);
  color: rgba(255, 255, 255, 0.85);
  pointer-events: none;
  display: inline-flex;
}
.bw-search__input {
  width: 100%; height: 30px;
  padding: 0 38px 0 28px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--bw-radius);
  background: rgba(255, 255, 255, 0.12);
  color: #FFFFFF;
  font-family: inherit;
  font-size: 12.5px;
  transition: background .15s, border-color .15s;
}
.bw-search__input::placeholder { color: rgba(255, 255, 255, 0.7); }
.bw-search__input:focus {
  outline: none;
  background: rgba(255, 255, 255, 0.95);
  color: var(--bw-text);
  border-color: var(--bw-teal-soft);
}
.bw-search__input:focus::placeholder { color: var(--bw-text-soft); }
.bw-search__input:focus + .bw-search__kbd { display: none; }
.bw-search__kbd {
  position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
  font-size: 11px;
  font-family: var(--bw-font-mono);
  color: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 3px;
  padding: 1px 5px;
  pointer-events: none;
}

.bw-header__util { display: flex; align-items: center; gap: 4px; flex-shrink: 0; }

.bw-iconbtn {
  width: 30px; height: 30px;
  border: 1px solid transparent;
  border-radius: var(--bw-radius);
  background: transparent;
  color: rgba(255, 255, 255, 0.85);
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer;
  text-decoration: none;
}
.bw-iconbtn:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #FFFFFF;
}

/* Lang switcher in header */
.bw-lang { position: relative; }
.bw-lang__btn {
  display: inline-flex; align-items: center; gap: 5px;
  height: 30px; padding: 0 8px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--bw-radius);
  background: rgba(255, 255, 255, 0.08);
  color: #FFFFFF;
  font-family: inherit;
  font-size: 12px;
  cursor: pointer;
}
.bw-lang__btn:hover { background: rgba(255, 255, 255, 0.18); }
.bw-lang__menu {
  position: absolute; right: 0; top: calc(100% + 4px);
  list-style: none; margin: 0; padding: 6px;
  background: var(--bw-bg);
  border: 1px solid var(--bw-line);
  border-radius: var(--bw-radius-md);
  box-shadow: var(--bw-shadow-md);
  min-width: 162px;
  display: none;
  z-index: 60;
}
.bw-lang:hover .bw-lang__menu,
.bw-lang:focus-within .bw-lang__menu { display: block; }
.bw-lang__menu li { list-style: none; }
.bw-lang__menu a {
  display: block; padding: 6px 10px;
  color: var(--bw-text); font-size: 13px;
  border-radius: var(--bw-radius);
  text-decoration: none;
}
.bw-lang__menu a:hover { background: var(--bw-bg-alt); color: var(--bw-teal-2); }
.bw-lang__menu a.is-current { color: var(--bw-teal-3); font-weight: 600; background: var(--bw-teal-bg); }

.bw-only-mobile { display: none; }

/* ========== Header — title bar (Django: page-context label) ========== */
.bw-header__title {
  background: linear-gradient(180deg, var(--bw-teal-3) 0%, var(--bw-teal-2) 100%);
  color: #FFFFFF;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}
.bw-header__title-inner {
  max-width: var(--bw-shell-max);
  margin: 0 auto;
  padding: 0 22px;
  min-height: var(--bw-headtitle-h);
  display: flex; align-items: center;
  font-family: var(--bw-font-serif);
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.2;
  color: #FFFFFF;
}

/* ========== Shell layout ========== */
.bw-shell {
  max-width: var(--bw-shell-max);
  margin: 0 auto;
  padding: 28px 22px 60px;
  display: block;
  min-height: 60vh;
}
.bw-shell--with-side {
  display: grid;
  grid-template-columns: minmax(0, 1fr) var(--bw-side-w);
  gap: 40px;
  align-items: start;
}
.bw-main { min-width: 0; }

/* ========== Right aggregated sidebar ========== */
.bw-side {
  width: 100%;
  display: flex; flex-direction: column;
  gap: 18px;
  position: sticky;
  top: 16px;
}
.bw-side__panel {
  background: var(--bw-bg);
  border: 1px solid var(--bw-line);
  border-radius: var(--bw-radius-md);
  padding: 14px 16px;
}
.bw-side__panel--accent {
  background: var(--bw-teal-bg);
  border-color: var(--bw-teal-line);
}
.bw-side__h {
  font-family: var(--bw-font-serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--bw-text);
  border-bottom: 2px solid var(--bw-teal);
  padding-bottom: 6px;
  margin-bottom: 10px;
  letter-spacing: -0.005em;
}
.bw-side__list {
  list-style: none; margin: 0; padding: 0;
}
.bw-side__list--breadcrumb li {
  font-size: 13px;
  padding: 2px 0;
  color: var(--bw-text-2);
}
.bw-side__list--breadcrumb li::before {
  content: "›";
  color: var(--bw-text-soft);
  margin-right: 6px;
}
.bw-side__list--plain li { padding: 4px 0; }
.bw-side__list li {
  margin: 0;
  padding: 4px 0;
  font-size: 13.5px;
  line-height: 1.5;
  border-bottom: 1px dotted var(--bw-line-soft);
}
.bw-side__list li:last-child { border-bottom: 0; }
.bw-side__list--breadcrumb li,
.bw-side__list--plain li { border-bottom: 0; }

.bw-side__link {
  color: var(--bw-link);
  text-decoration: none;
  display: block;
}
.bw-side__link:hover {
  color: var(--bw-link-hover);
  text-decoration: underline;
}
.bw-side__link.is-current {
  color: var(--bw-text);
  font-weight: 700;
}
.bw-side__link.is-current::before {
  content: "▸ ";
  color: var(--bw-teal-2);
  font-weight: 700;
}

/* Sponsor card on top */
.bw-side__sponsor {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none;
  color: var(--bw-text);
}
.bw-side__sponsor:hover { text-decoration: none; }
.bw-side__sponsor-mark {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--bw-teal);
  color: #FFFFFF;
  display: inline-flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.bw-side__sponsor-text { display: flex; flex-direction: column; line-height: 1.35; }
.bw-side__sponsor-name {
  font-size: 13px; font-weight: 700; color: var(--bw-text);
}
.bw-side__sponsor-sub {
  font-size: 12px; color: var(--bw-text-mut);
}

/* ========== Article wrapper ========== */
.bw-article { width: 100%; min-width: 0; }

.bw-crumb {
  font-size: 12.5px;
  color: var(--bw-text-mut);
  margin-bottom: 10px;
  display: flex; align-items: center; gap: 5px;
  flex-wrap: wrap;
}
.bw-crumb a { color: var(--bw-link); text-decoration: none; }
.bw-crumb a:hover { text-decoration: underline; }
.bw-crumb__sep { color: var(--bw-text-soft); }
.bw-crumb__current { color: var(--bw-text-mut); }

.bw-article__head {
  border-bottom: 1px solid var(--bw-line);
  padding-bottom: 10px;
  margin-bottom: 18px;
}
.bw-article__h1 {
  font-family: var(--bw-font-serif);
  font-size: 36px;
  line-height: 1.18;
  font-weight: 700;
  color: var(--bw-text);
  margin: 0 0 10px;
  letter-spacing: -0.012em;
}
.bw-article__h1 .bw-anchor {
  color: var(--bw-teal-2);
  font-size: 0.7em;
  vertical-align: 5%;
  margin-left: 4px;
  opacity: 0;
  text-decoration: none;
  transition: opacity .15s;
}
.bw-article__h1:hover .bw-anchor,
.bw-prose h2:hover .bw-anchor,
.bw-prose h3:hover .bw-anchor,
.bw-doctree__h3:hover .bw-anchor {
  opacity: 1;
}
.bw-article__lede {
  font-size: 16px;
  color: var(--bw-text-2);
  line-height: 1.6;
  margin: 0 0 8px;
}
.bw-article__meta {
  font-size: 12.5px;
  color: var(--bw-text-mut);
  display: flex; align-items: center; flex-wrap: wrap; gap: 6px;
}
.bw-article__meta-sep { color: var(--bw-text-soft); }
.bw-chip {
  display: inline-block;
  font-size: 11.5px;
  color: var(--bw-teal-3);
  background: var(--bw-teal-bg);
  border: 1px solid var(--bw-teal-line);
  padding: 1px 8px;
  border-radius: 999px;
  text-decoration: none;
}
.bw-chip:hover { text-decoration: none; color: var(--bw-teal-deep); }

/* ========== Article body grid (content + TOC) ========== */
.bw-article__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) var(--bw-toc-w);
  gap: 36px;
}

/* ========== Prose ========== */
.bw-prose {
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--bw-text);
  min-width: 0;
}
.bw-prose h2,
.bw-doctree__h3,
.bw-prose h3 {
  font-family: var(--bw-font-serif);
  font-weight: 700;
  letter-spacing: -0.008em;
  scroll-margin-top: 24px;
  position: relative;
}
.bw-prose h2 {
  font-size: 26px;
  line-height: 1.3;
  margin: 36px 0 12px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--bw-line);
  color: var(--bw-text);
}
.bw-prose h3 {
  font-size: 20px;
  line-height: 1.35;
  margin: 28px 0 10px;
  color: var(--bw-text);
}
.bw-prose h4 {
  font-size: 17px;
  font-weight: 700;
  margin: 22px 0 8px;
  font-family: var(--bw-font-sans);
}
.bw-prose p { margin: 0 0 14px; }
.bw-prose ul, .bw-prose ol {
  margin: 0 0 14px; padding-left: 24px;
}
.bw-prose li { margin-bottom: 4px; }
.bw-prose li::marker { color: var(--bw-teal-2); }
.bw-prose a {
  color: var(--bw-link);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
}
.bw-prose a:hover {
  color: var(--bw-link-hover);
  text-decoration-thickness: 2px;
}
.bw-prose strong { color: var(--bw-text); font-weight: 700; }

.bw-prose code {
  font-family: var(--bw-font-mono);
  font-size: 0.88em;
  padding: 1px 6px;
  background: var(--bw-bg-code);
  border: 1px solid var(--bw-line-soft);
  border-radius: 3px;
  color: var(--bw-teal-deep);
  font-weight: 500;
}
.bw-prose pre {
  font-family: var(--bw-font-mono);
  font-size: 13.5px;
  line-height: 1.55;
  background: var(--bw-bg-code);
  border: 1px solid var(--bw-line);
  border-left: 3px solid var(--bw-teal-2);
  border-radius: var(--bw-radius);
  padding: 14px 16px;
  overflow-x: auto;
  margin: 14px 0 18px;
  color: var(--bw-text);
}
.bw-prose pre code {
  padding: 0; background: transparent; border: 0; color: inherit;
}

.bw-prose blockquote {
  margin: 16px 0;
  padding: 12px 16px;
  background: var(--bw-bg-callout);
  border-left: 4px solid #F97316;
  color: var(--bw-text);
  border-radius: 0 var(--bw-radius-md) var(--bw-radius-md) 0;
}
.bw-prose blockquote p:last-child { margin-bottom: 0; }

.bw-prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 14px 0 20px;
  font-size: 14px;
  border: 1px solid var(--bw-line);
}
.bw-prose table th,
.bw-prose table td {
  padding: 8px 12px;
  border: 1px solid var(--bw-line-soft);
  text-align: left;
  vertical-align: top;
}
.bw-prose table th {
  background: var(--bw-teal-bg);
  font-weight: 700;
  font-size: 13.5px;
  color: var(--bw-text);
  border-bottom: 2px solid var(--bw-teal);
}
.bw-prose table tr:nth-child(even) td { background: var(--bw-bg-alt); }

.bw-prose hr {
  border: 0;
  border-top: 1px solid var(--bw-line);
  margin: 28px 0;
}

/* Pilcrow ¶ anchor */
.bw-anchor {
  color: var(--bw-teal-2);
  font-weight: 400;
  margin-left: 4px;
  text-decoration: none;
  font-family: var(--bw-font-sans);
}
.bw-anchor:hover {
  color: var(--bw-teal-deep);
  text-decoration: none;
}
.bw-prose h2 .bw-anchor,
.bw-prose h3 .bw-anchor,
.bw-doctree__h3 .bw-anchor {
  font-size: 0.6em;
  vertical-align: 8%;
  opacity: 0;
  transition: opacity .15s;
}

/* ========== Home — promo strip (Django bookstrip) ========== */
.bw-promo {
  background: linear-gradient(180deg, #ECFDF5 0%, #DCFCE7 100%);
  border: 1px solid #86EFAC;
  border-radius: var(--bw-radius-md);
  margin-bottom: 22px;
}
.bw-promo__inner {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 18px;
  flex-wrap: wrap;
}
.bw-promo__icon {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--bw-teal);
  color: #FFFFFF;
  display: inline-flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.bw-promo__text {
  flex: 1; min-width: 200px;
  display: flex; flex-direction: column; gap: 2px;
  font-size: 14px;
  color: #065F46;
}
.bw-promo__text strong { font-size: 14.5px; color: #064E3B; }
.bw-promo__cta {
  display: inline-flex; align-items: center;
  height: 32px; padding: 0 14px;
  background: var(--bw-teal-2);
  color: #FFFFFF;
  border-radius: var(--bw-radius);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
}
.bw-promo__cta:hover {
  background: var(--bw-teal-3);
  color: #FFFFFF;
  text-decoration: none;
}

/* Home heading */
.bw-home__head {
  margin-bottom: 20px;
}
.bw-home__h1 {
  font-family: var(--bw-font-serif);
  font-size: 38px;
  line-height: 1.18;
  font-weight: 700;
  color: var(--bw-text);
  margin: 0 0 10px;
  letter-spacing: -0.012em;
}
.bw-home__lede {
  font-size: 16px;
  color: var(--bw-text-2);
  line-height: 1.65;
  margin: 0 0 16px;
  max-width: 820px;
}
.bw-home__search {
  position: relative;
  max-width: 640px;
  margin-bottom: 8px;
}
.bw-home__search-icon {
  position: absolute; left: 14px; top: 50%; transform: translateY(-50%);
  color: var(--bw-text-mut);
}
.bw-home__search-input {
  width: 100%; height: 46px;
  padding: 0 18px 0 44px;
  border: 1px solid var(--bw-line);
  border-radius: var(--bw-radius-md);
  background: var(--bw-bg);
  font-family: inherit;
  font-size: 15px;
  color: var(--bw-text);
}
.bw-home__search-input:focus {
  outline: none;
  border-color: var(--bw-teal);
  box-shadow: 0 0 0 3px var(--bw-teal-bg);
}

.bw-prose--home h2 {
  font-size: 24px;
  margin-top: 36px;
}

/* Steps list (numbered horizontal list) */
.bw-stepslist {
  list-style: none;
  margin: 12px 0 18px;
  padding: 0;
}
.bw-stepslist__item {
  display: flex; align-items: baseline; gap: 10px;
  padding: 8px 0;
  border-bottom: 1px dotted var(--bw-line-soft);
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--bw-text-2);
}
.bw-stepslist__num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 22px; height: 22px;
  font-size: 12px; font-weight: 700;
  background: var(--bw-teal-bg);
  color: var(--bw-teal-deep);
  border: 1px solid var(--bw-teal-line);
  border-radius: 50%;
  flex-shrink: 0;
  font-family: var(--bw-font-mono);
}
.bw-stepslist__link {
  font-weight: 600;
  color: var(--bw-link);
}
.bw-stepslist__desc { color: var(--bw-text-mut); }

/* Doctree (Django home: section blocks listing categories with linked sub-articles) */
.bw-doctree {
  margin: 16px 0 24px;
}
.bw-doctree__sect {
  margin-bottom: 22px;
  padding-bottom: 6px;
}
.bw-doctree__h3 {
  font-family: var(--bw-font-serif);
  font-size: 19px;
  font-weight: 700;
  margin: 16px 0 8px;
  color: var(--bw-text);
}
.bw-doctree__h3 a {
  color: var(--bw-link);
  text-decoration: none;
}
.bw-doctree__h3 a:hover { color: var(--bw-link-hover); text-decoration: underline; }
.bw-doctree__desc {
  font-size: 13.5px;
  color: var(--bw-text-mut);
  margin: 0 0 6px;
  line-height: 1.55;
}
.bw-doctree__list {
  list-style: none;
  margin: 4px 0 0 4px;
  padding: 0;
  font-size: 13.5px;
}
.bw-doctree__list li {
  padding: 2px 0 2px 14px;
  position: relative;
  line-height: 1.5;
}
.bw-doctree__list li::before {
  content: "—";
  position: absolute; left: 0;
  color: var(--bw-teal-2);
}
.bw-doctree__list li a { color: var(--bw-link); text-decoration: none; }
.bw-doctree__list li a:hover { color: var(--bw-link-hover); text-decoration: underline; }

/* ========== Post list ========== */
.bw-postlist {
  list-style: none;
  margin: 4px 0 22px;
  padding: 0;
}
.bw-postlist__item {
  padding: 12px 0;
  border-bottom: 1px solid var(--bw-line-soft);
}
.bw-postlist__title {
  display: block;
  font-size: 16px;
  font-weight: 600;
  color: var(--bw-link);
  margin-bottom: 4px;
  text-decoration: none;
  line-height: 1.4;
  font-family: var(--bw-font-serif);
}
.bw-postlist__title:hover { color: var(--bw-link-hover); text-decoration: underline; }
.bw-postlist__meta {
  display: flex; align-items: center; gap: 8px;
  margin: 0 0 4px;
  font-size: 12px;
  color: var(--bw-text-mut);
}
.bw-postlist__chip {
  font-size: 11px;
  color: var(--bw-teal-3);
  background: var(--bw-teal-bg);
  border: 1px solid var(--bw-teal-line);
  padding: 1px 7px;
  border-radius: 999px;
}
.bw-postlist__desc {
  font-size: 13.5px;
  color: var(--bw-text-2);
  margin: 4px 0 0;
  line-height: 1.55;
}
.bw-viewall {
  margin-top: 6px;
  font-size: 14px;
}

/* Categories list */
.bw-catlist {
  list-style: none; margin: 8px 0 24px; padding: 0;
}
.bw-catlist__item {
  padding: 10px 0;
  border-bottom: 1px solid var(--bw-line-soft);
}
.bw-catlist__title {
  font-family: var(--bw-font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--bw-link);
  text-decoration: none;
  margin-right: 8px;
}
.bw-catlist__title:hover { color: var(--bw-link-hover); text-decoration: underline; }
.bw-catlist__count {
  font-size: 12px;
  color: var(--bw-text-mut);
  background: var(--bw-bg-alt);
  border-radius: 999px;
  padding: 1px 8px;
}
.bw-catlist__desc {
  font-size: 13.5px;
  color: var(--bw-text-2);
  margin: 4px 0 0;
  line-height: 1.55;
}

/* ========== FAQ ========== */
.bw-faq { margin: 12px 0 24px; }
.bw-faq__item {
  border: 1px solid var(--bw-line);
  border-radius: var(--bw-radius-md);
  margin-bottom: 8px;
  background: var(--bw-bg);
  overflow: hidden;
}
.bw-faq__item.is-open { border-color: var(--bw-teal-line); }
.bw-faq__q {
  width: 100%;
  padding: 12px 16px 12px 38px;
  font-weight: 600;
  font-size: 14.5px;
  cursor: pointer;
  text-align: left;
  border: 0;
  background: transparent;
  position: relative;
  color: var(--bw-text);
  font-family: var(--bw-font-serif);
}
.bw-faq__q::before {
  content: "+";
  position: absolute; left: 16px; top: 50%; transform: translateY(-50%);
  color: var(--bw-teal-2);
  font-size: 18px; font-weight: 400;
  width: 14px; text-align: center;
  transition: transform .15s;
}
.bw-faq__item.is-open .bw-faq__q::before {
  content: "−";
  color: var(--bw-teal-deep);
}
.bw-faq__a {
  padding: 0 16px 0 38px;
  color: var(--bw-text-2);
  font-size: 14px;
  line-height: 1.65;
  max-height: 0;
  overflow: hidden;
  transition: max-height .2s ease, padding .2s ease;
}
.bw-faq__item.is-open .bw-faq__a {
  max-height: 600px;
  padding: 4px 16px 14px 38px;
  border-top: 1px solid var(--bw-line-soft);
}
.bw-faq__a p { margin: 8px 0; }

/* ========== TOC ========== */
.bw-toc-wrap { width: 100%; }
.bw-toc {
  position: sticky;
  top: 16px;
  font-size: 12.5px;
  background: var(--bw-bg);
  border: 1px solid var(--bw-line-soft);
  border-radius: var(--bw-radius-md);
  padding: 12px 14px;
}
.bw-toc__head {
  font-family: var(--bw-font-serif);
  font-size: 13.5px;
  font-weight: 700;
  color: var(--bw-text);
  margin-bottom: 8px;
  border-bottom: 1px solid var(--bw-line-soft);
  padding-bottom: 4px;
}
.bw-toc__list {
  list-style: none; margin: 0 0 12px; padding: 0;
}
.bw-toc__list--plain li { padding: 2px 0; }
.bw-toc__item a {
  display: block;
  padding: 3px 0 3px 6px;
  color: var(--bw-text-2);
  text-decoration: none;
  font-size: 12.5px;
  line-height: 1.5;
  border-left: 2px solid transparent;
  margin-left: -8px;
  padding-left: 12px;
}
.bw-toc__item--lv3 a {
  padding-left: 24px;
  font-size: 12px;
  color: var(--bw-text-mut);
}
.bw-toc__item a:hover {
  color: var(--bw-teal-3);
  text-decoration: none;
  border-left-color: var(--bw-teal-line);
}
.bw-toc__item a.is-active {
  color: var(--bw-teal-3);
  border-left-color: var(--bw-teal);
  font-weight: 600;
}
.bw-toc__sub { margin-top: 12px; }

/* ========== Buttons ========== */
.bw-btn {
  display: inline-flex; align-items: center; gap: 6px;
  height: 36px; padding: 0 16px;
  border: 1px solid var(--bw-line);
  border-radius: var(--bw-radius);
  background: var(--bw-bg);
  color: var(--bw-text);
  font-size: 14px;
  font-family: inherit;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
}
.bw-btn:hover {
  border-color: var(--bw-teal);
  color: var(--bw-teal-3);
  text-decoration: none;
}
.bw-btn--primary {
  background: var(--bw-teal-2);
  color: #FFFFFF;
  border-color: var(--bw-teal-2);
}
.bw-btn--primary:hover {
  background: var(--bw-teal-3);
  border-color: var(--bw-teal-3);
  color: #FFFFFF;
}

/* ========== Prev/Next ========== */
.bw-prevnext {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 36px;
  padding-top: 18px;
  border-top: 1px solid var(--bw-line);
}
.bw-prevnext__item {
  display: flex; flex-direction: column; gap: 4px;
  padding: 12px 16px;
  border: 1px solid var(--bw-line);
  border-radius: var(--bw-radius-md);
  text-decoration: none;
  background: var(--bw-bg);
  color: var(--bw-text);
}
.bw-prevnext__item--empty { border: 0; background: transparent; }
.bw-prevnext__item:hover {
  border-color: var(--bw-teal);
  text-decoration: none;
}
.bw-prevnext__lab {
  font-size: 12px;
  color: var(--bw-text-mut);
  display: inline-flex; align-items: center; gap: 4px;
}
.bw-prevnext__t {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--bw-link);
  font-family: var(--bw-font-serif);
  line-height: 1.4;
}
.bw-prevnext__item:hover .bw-prevnext__t { color: var(--bw-link-hover); }
.bw-prevnext__next { text-align: right; }
.bw-prevnext__next .bw-prevnext__lab { justify-content: flex-end; }

/* ========== Pager ========== */
.bw-pager {
  display: flex; align-items: center; justify-content: center;
  gap: 4px;
  margin: 28px 0 8px;
  flex-wrap: wrap;
}
.bw-pager__btn,
.bw-pager__num {
  display: inline-flex; align-items: center; justify-content: center;
  height: 32px; min-width: 32px;
  padding: 0 11px;
  border: 1px solid var(--bw-line);
  border-radius: var(--bw-radius);
  font-size: 13px;
  color: var(--bw-text);
  background: var(--bw-bg);
  text-decoration: none;
}
.bw-pager__btn:hover,
.bw-pager__num:hover {
  border-color: var(--bw-teal);
  color: var(--bw-teal-3);
  text-decoration: none;
}
.bw-pager__num.is-current {
  background: var(--bw-teal-2);
  color: #FFFFFF;
  border-color: var(--bw-teal-2);
}
.bw-pager__btn.is-disabled,
.bw-pager__num.is-disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

/* ========== 404 ========== */
.bw-404 {
  max-width: 520px;
  margin: 80px auto;
  text-align: center;
  padding: 0 22px;
}
.bw-404__code {
  font-size: 96px;
  font-weight: 800;
  color: var(--bw-teal);
  margin-bottom: 12px;
  letter-spacing: -0.04em;
  font-family: var(--bw-font-serif);
  line-height: 1;
}
.bw-404__title {
  font-family: var(--bw-font-serif);
  font-size: 26px;
  margin: 0 0 12px;
  color: var(--bw-text);
}
.bw-404__body {
  color: var(--bw-text-2);
  margin: 0 0 24px;
}

/* ========== Footer (deep teal — Django signature) ========== */
.bw-footer {
  background: linear-gradient(180deg, var(--bw-teal-deep) 0%, #0C4A5E 100%);
  color: #B6E5ED;
  margin-top: 60px;
  border-top: 4px solid var(--bw-teal-2);
}
.bw-footer__inner {
  max-width: var(--bw-shell-max);
  margin: 0 auto;
  padding: 40px 22px 18px;
  display: grid;
  grid-template-columns: 3.4fr 1fr;
  gap: 36px;
}
.bw-footer__cols {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 22px;
  order: 1;
}
.bw-footer__brand {
  order: 2;
  display: flex; flex-direction: column; align-items: flex-start;
  gap: 8px;
}
.bw-footer__logo {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--bw-font-serif);
}
.bw-footer__logo-mark {
  display: inline-flex;
  background: rgba(255, 255, 255, 0.95);
  width: 32px; height: 32px;
  border-radius: 4px;
  align-items: center; justify-content: center;
  padding: 1px;
}
.bw-footer__logo-name {
  font-size: 18px; font-weight: 700;
  color: #FFFFFF;
}
.bw-footer__tag {
  font-size: 12.5px;
  color: #A7D8E1;
  margin: 0;
  line-height: 1.55;
}
.bw-footer__h {
  font-family: var(--bw-font-serif);
  font-size: 14px;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 10px;
}
.bw-footer__col ul {
  list-style: none; margin: 0; padding: 0;
}
.bw-footer__col li { margin-bottom: 6px; }
.bw-footer__col a {
  font-size: 13px;
  color: #A7D8E1;
  text-decoration: none;
}
.bw-footer__col a:hover {
  color: #FFFFFF;
  text-decoration: underline;
}
.bw-footer__lang { display: flex; flex-wrap: wrap; gap: 4px 8px; }
.bw-footer__lang a {
  display: inline-block;
  padding: 1px 4px;
}
.bw-footer__lang a.is-current { color: var(--bw-teal-soft); font-weight: 700; }
.bw-footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 14px 22px;
  max-width: var(--bw-shell-max);
  margin: 0 auto;
  display: flex; justify-content: space-between; align-items: flex-start;
  gap: 20px;
  font-size: 11.5px;
  color: #87BFC9;
  flex-wrap: wrap;
  line-height: 1.6;
}
.bw-footer__rights { white-space: nowrap; }
.bw-footer__risk { flex: 1; max-width: 760px; }

/* ========== Responsive ========== */
@media (max-width: 1180px) {
  .bw-article__body { grid-template-columns: 1fr; }
  .bw-toc-wrap { display: none; }
}
@media (max-width: 980px) {
  .bw-shell--with-side {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }
  .bw-side {
    position: static;
    width: 100%;
  }
  .bw-topnav__item { padding: 0 8px; font-size: 12.5px; }
  .bw-footer__inner { grid-template-columns: 1fr; }
  .bw-footer__cols { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 760px) {
  .bw-only-mobile { display: inline-flex; }
  .bw-search { display: none; }
  .bw-topnav { display: none; }
  .bw-header__title-inner { font-size: 22px; min-height: 56px; }
  .bw-banner__inner { padding: 0 14px; font-size: 12px; }
  .bw-shell { padding: 22px 16px 50px; }
  .bw-article__h1 { font-size: 28px; }
  .bw-home__h1 { font-size: 28px; }
  .bw-prose h2 { font-size: 22px; }
  .bw-footer__cols { grid-template-columns: repeat(2, 1fr); }
  .bw-prevnext { grid-template-columns: 1fr; }
  .bw-promo__inner { padding: 12px 14px; }
  .bw-promo__cta { width: 100%; justify-content: center; }
  .bw-side { position: fixed; top: 0; left: 0; width: 280px; height: 100vh; background: var(--bw-bg);
    z-index: 40; transform: translateX(-100%); transition: transform .2s; padding: 16px; overflow-y: auto;
    border-right: 1px solid var(--bw-line); }
  .bw-side.is-open { transform: translateX(0); }
  body.bw-nav-open { overflow: hidden; }
}

/* Print */
@media print {
  .bw-banner, .bw-header, .bw-footer, .bw-side, .bw-toc-wrap, .bw-prevnext, .bw-pager { display: none; }
  .bw-shell--with-side { grid-template-columns: 1fr; }
  .bw-prose { font-size: 12pt; }
}