/* ============================================
   Documentation/Wiki Style - Binance Affiliate
   Colors: #7c3aed (primary), #f5f3ff (sidebar), #1e1b4b (text)
   ============================================ */

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-primary: #7c3aed;
  --color-primary-dark: #6d28d9;
  --color-primary-light: #8b5cf6;
  --color-primary-bg: #f5f3ff;
  --color-primary-bg-hover: #ede9fe;
  --color-text: #1e1b4b;
  --color-text-secondary: #4c4685;
  --color-text-muted: #6b7280;
  --color-bg: #ffffff;
  --color-border: #e5e7eb;
  --color-border-light: #f3f4f6;
  --color-code-bg: #f8f7ff;
  --sidebar-width: 240px;
  --header-height: 48px;
  --content-max-width: 800px;
  --font-mono: "SFMono-Regular", "JetBrains Mono", "Fira Code", "Cascadia Code", monospace;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  min-height: 100vh;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--color-primary-dark);
}

img {
  max-width: 100%;
  height: auto;
}

/* --- Document Header (top bar) --- */
.doc-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  z-index: 100;
}

.doc-header__left {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: var(--sidebar-width);
}

.doc-header__toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  background: none;
  cursor: pointer;
  color: var(--color-text);
  border-radius: 4px;
}

.doc-header__toggle:hover {
  background: var(--color-primary-bg);
}

.doc-header__brand {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-text);
  font-weight: 600;
  font-size: 0.9rem;
}

.doc-header__brand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.8rem;
}

.doc-header__brand-name {
  font-family: var(--font-mono);
}

.doc-header__right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.doc-header__link {
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 4px 8px;
  border-radius: 4px;
  transition: background 0.15s ease, color 0.15s ease;
}

.doc-header__link:hover {
  color: var(--color-primary);
  background: var(--color-primary-bg);
}

.doc-header__cta-btn {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  transition: background 0.15s ease;
}

.doc-header__cta-btn:hover {
  background: var(--color-primary-dark);
  color: #fff;
}

/* --- Layout --- */
.doc-layout {
  display: flex;
  min-height: 100vh;
  padding-top: var(--header-height);
}

/* --- Sidebar --- */
.sidebar {
  position: fixed;
  top: var(--header-height);
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--color-primary-bg);
  border-right: 1px solid var(--color-border);
  overflow-y: auto;
  z-index: 90;
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
}

.sidebar::-webkit-scrollbar {
  width: 4px;
}

.sidebar::-webkit-scrollbar-track {
  background: transparent;
}

.sidebar::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 2px;
}

.sidebar__inner {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: 16px 0;
}

.sidebar__brand {
  padding: 0 16px 16px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 8px;
  display: none; /* hidden since header shows brand */
}

.sidebar__logo {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-text);
  font-weight: 700;
}

.sidebar__logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.85rem;
}

.sidebar__logo-text {
  font-family: var(--font-mono);
  font-size: 0.95rem;
}

.sidebar__tagline {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 4px;
}

/* Sidebar navigation */
.sidebar__nav {
  flex: 1;
  padding: 0;
}

.sidebar__group {
  margin-bottom: 8px;
}

.sidebar__group-title {
  display: block;
  padding: 8px 16px 4px;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}

.sidebar__list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.sidebar__list-item {
  margin: 0;
}

.sidebar__link {
  display: block;
  padding: 5px 16px 5px 20px;
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  border-left: 2px solid transparent;
  transition: all 0.12s ease;
  line-height: 1.5;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar__link:hover {
  color: var(--color-primary);
  background: var(--color-primary-bg-hover);
  border-left-color: var(--color-primary-light);
}

.sidebar__link--active {
  color: var(--color-primary);
  background: var(--color-primary-bg-hover);
  border-left-color: var(--color-primary);
  font-weight: 600;
}

.sidebar__tag-hash {
  color: var(--color-primary-light);
  font-family: var(--font-mono);
  font-weight: 600;
}

/* Sidebar CTA */
.sidebar__cta {
  margin-top: auto;
  padding: 16px;
  border-top: 1px solid var(--color-border);
}

.sidebar__cta-btn {
  display: block;
  width: 100%;
  padding: 8px 16px;
  background: var(--color-primary);
  color: #fff;
  text-align: center;
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  transition: background 0.15s ease;
}

.sidebar__cta-btn:hover {
  background: var(--color-primary-dark);
  color: #fff;
}

.sidebar__cta-note {
  text-align: center;
  font-size: 0.7rem;
  color: var(--color-text-muted);
  margin-top: 6px;
}

/* --- Main Content --- */
.doc-main {
  margin-left: var(--sidebar-width);
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.doc-content {
  flex: 1;
  padding: 32px 40px;
  max-width: var(--content-max-width);
  width: 100%;
}

/* --- Prose (article body) --- */
.prose h1, .prose h2, .prose h3, .prose h4, .prose h5, .prose h6 {
  font-family: var(--font-mono);
  color: var(--color-text);
  font-weight: 700;
  line-height: 1.3;
  margin-top: 2em;
  margin-bottom: 0.5em;
}

.prose h1 { font-size: 1.8rem; margin-top: 0; }
.prose h2 { font-size: 1.4rem; padding-bottom: 0.3em; border-bottom: 1px solid var(--color-border); }
.prose h3 { font-size: 1.15rem; }
.prose h4 { font-size: 1rem; }

.prose p {
  margin-bottom: 1em;
}

.prose ul, .prose ol {
  margin-bottom: 1em;
  padding-left: 1.5em;
}

.prose li {
  margin-bottom: 0.35em;
}

.prose ol {
  list-style: none;
  counter-reset: step-counter;
  padding-left: 0;
}

.prose ol > li {
  counter-increment: step-counter;
  position: relative;
  padding-left: 2em;
  margin-bottom: 0.75em;
}

.prose ol > li::before {
  content: counter(step-counter);
  position: absolute;
  left: 0;
  top: 0.1em;
  width: 1.5em;
  height: 1.5em;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  font-family: var(--font-mono);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.prose blockquote {
  margin: 1.5em 0;
  padding: 12px 16px;
  background: var(--color-code-bg);
  border-left: 3px solid var(--color-primary);
  border-radius: 0 6px 6px 0;
  color: var(--color-text-secondary);
  font-size: 0.92rem;
}

.prose blockquote p:last-child {
  margin-bottom: 0;
}

.prose code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--color-code-bg);
  color: var(--color-primary-dark);
  padding: 2px 6px;
  border-radius: 3px;
  border: 1px solid var(--color-border);
}

.prose pre {
  margin: 1.5em 0;
  padding: 16px 20px;
  background: #1e1b4b;
  color: #e2e8f0;
  border-radius: 8px;
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.6;
}

.prose pre code {
  background: none;
  color: inherit;
  padding: 0;
  border: none;
  border-radius: 0;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  font-size: 0.9rem;
}

.prose th, .prose td {
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  text-align: left;
}

.prose th {
  background: var(--color-primary-bg);
  font-weight: 600;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

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

.prose a:hover {
  color: var(--color-primary-dark);
}

.prose hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2em 0;
}

.prose strong {
  font-weight: 600;
  color: var(--color-text);
}

.prose img {
  border-radius: 8px;
  border: 1px solid var(--color-border);
  margin: 1em 0;
}

/* --- Post Layout --- */
.post__header {
  margin-bottom: 2em;
}

.post__top-line {
  width: 60px;
  height: 3px;
  background: var(--color-primary);
  border-radius: 2px;
  margin-bottom: 16px;
}

.post__title {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.25;
  margin-bottom: 12px;
}

.post__meta {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}

.post__meta-sep {
  margin: 0 8px;
  color: var(--color-border);
}

.post__tag {
  display: inline-block;
  padding: 1px 8px;
  background: var(--color-primary-bg);
  color: var(--color-primary);
  border-radius: 3px;
  font-size: 0.75rem;
  font-weight: 500;
  margin-right: 4px;
  transition: background 0.15s ease;
}

.post__tag:hover {
  background: var(--color-primary-bg-hover);
}

.post__body {
  margin-bottom: 2em;
}

/* Post navigation (prev/next) */
.post__nav {
  margin-top: 3em;
  padding-top: 1.5em;
  border-top: 1px solid var(--color-border);
}

.post__nav-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.post__nav-link {
  display: block;
  padding: 12px 16px;
  background: var(--color-primary-bg);
  border-radius: 6px;
  border: 1px solid transparent;
  transition: border-color 0.15s ease;
}

.post__nav-link:hover {
  border-color: var(--color-primary-light);
}

.post__nav-link--next {
  text-align: right;
}

.post__nav-label {
  display: block;
  font-size: 0.7rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.post__nav-title {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text);
}

/* --- Page Layout --- */
.page__title {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 1.5em;
  padding-bottom: 0.5em;
  border-bottom: 2px solid var(--color-primary);
}

.page__body {
  margin-bottom: 2em;
}

/* --- Breadcrumb --- */
.breadcrumb {
  margin-bottom: 1.5em;
}

.breadcrumb__list {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0;
  font-size: 0.78rem;
  font-family: var(--font-mono);
  color: var(--color-text-muted);
}

.breadcrumb__item::after {
  content: "/";
  margin: 0 6px;
  color: var(--color-border);
}

.breadcrumb__item:last-child::after {
  display: none;
}

.breadcrumb__link {
  color: var(--color-text-muted);
}

.breadcrumb__link:hover {
  color: var(--color-primary);
}

.breadcrumb__item--active {
  color: var(--color-text);
  font-weight: 500;
}

/* --- Callout / CTA --- */
.callout {
  margin: 2em 0;
  padding: 16px 20px;
  background: var(--color-primary-bg);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 8px 8px 0;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.callout__icon {
  flex-shrink: 0;
  color: var(--color-primary);
  margin-top: 2px;
}

.callout__body {
  flex: 1;
  min-width: 0;
}

.callout__title {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--color-text);
  margin-bottom: 4px;
}

.callout__desc {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-bottom: 10px;
  line-height: 1.5;
}

.callout__btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  transition: background 0.15s ease;
}

.callout__btn:hover {
  background: var(--color-primary-dark);
  color: #fff;
}

.callout__actions { display: flex; gap: 8px; flex-wrap: wrap; }

.callout__btn--outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}
.callout__btn--outline:hover {
  background: var(--color-primary-bg);
  color: var(--color-primary-dark);
}

.callout--download {
  background: var(--color-border-light);
  border-left-color: var(--color-primary-light);
}

.doc-header__download-btn {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  transition: all 0.15s ease;
}
.doc-header__download-btn:hover {
  background: var(--color-primary-bg);
}

.doc-footer__cta {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

/* --- Related Posts --- */
.related-posts {
  margin-top: 2.5em;
  padding: 20px;
  background: var(--color-primary-bg);
  border-radius: 8px;
}

.related-posts__title {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.related-posts__list {
  padding-left: 0;
  margin: 0;
  list-style: none;
  counter-reset: related;
}

.related-posts__item {
  counter-increment: related;
  padding: 6px 0;
  border-bottom: 1px solid var(--color-border);
}

.related-posts__item:last-child {
  border-bottom: none;
}

.related-posts__item::before {
  content: counter(related) ".";
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--color-primary);
  margin-right: 8px;
  font-size: 0.82rem;
}

.related-posts__link {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
}

.related-posts__link:hover {
  color: var(--color-primary);
}

/* --- Home Page --- */
.home__hero {
  padding: 2em 0 2.5em;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 2em;
}

.home__title {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
  line-height: 1.2;
}

.home__desc {
  font-size: 1rem;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
  line-height: 1.6;
  max-width: 560px;
}

.home__cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 22px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  transition: background 0.15s ease;
}

.home__cta-btn:hover {
  background: var(--color-primary-dark);
  color: #fff;
}
.home__cta-btn--outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}
.home__cta-btn--outline:hover {
  background: var(--color-primary-bg);
  color: var(--color-primary-dark);
}
.home__hero-actions { display: flex; gap: 10px; flex-wrap: wrap; }

.home__section-title {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.home__section-icon {
  color: var(--color-primary);
  font-family: var(--font-mono);
}

.home__quickstart {
  margin-bottom: 2.5em;
}

.home__steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.home__step {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 16px;
  border-left: 2px solid var(--color-border);
  color: var(--color-text);
  transition: border-color 0.15s ease, background 0.15s ease;
}

.home__step:hover {
  border-left-color: var(--color-primary);
  background: var(--color-primary-bg);
}

.home__step-num {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.8rem;
}

.home__step-content {
  flex: 1;
  min-width: 0;
}

.home__step-title {
  display: block;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 2px;
}

.home__step-desc {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  margin: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.home__all-posts {
  margin-bottom: 2em;
}

.home__post-list {
  display: flex;
  flex-direction: column;
}

.home__post-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  color: var(--color-text);
  border-radius: 4px;
  transition: background 0.12s ease;
  font-size: 0.9rem;
}

.home__post-item:hover {
  background: var(--color-primary-bg);
}

.home__post-index {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-text-muted);
  flex-shrink: 0;
  width: 28px;
}

.home__post-title {
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-weight: 500;
}

.home__post-date {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* --- Posts Page --- */
.posts-page__title {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
}

.posts-page__desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  margin-bottom: 2em;
}

.posts-page__list {
  display: flex;
  flex-direction: column;
}

.posts-page__item {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 12px;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border-light);
  transition: background 0.12s ease;
}

.posts-page__item:hover {
  background: var(--color-primary-bg);
}

.posts-page__item-main {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  flex: 1;
  min-width: 0;
}

.posts-page__item-num {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--color-text-muted);
  flex-shrink: 0;
  margin-top: 2px;
}

.posts-page__item-info {
  flex: 1;
  min-width: 0;
}

.posts-page__item-title {
  display: block;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
}

.posts-page__item-desc {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  margin: 4px 0 0;
  line-height: 1.4;
}

.posts-page__item-meta {
  flex-shrink: 0;
  text-align: right;
}

.posts-page__item-meta time {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  display: block;
}

.posts-page__item-tags {
  display: flex;
  gap: 4px;
  justify-content: flex-end;
  margin-top: 4px;
}

.posts-page__tag-badge {
  display: inline-block;
  padding: 1px 7px;
  background: var(--color-primary-bg);
  color: var(--color-primary);
  border-radius: 3px;
  font-size: 0.7rem;
  font-weight: 500;
}

/* --- Tags Page --- */
.tags-page__title {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
}

.tags-page__desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 2em;
}

.tags-page__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
}

.tags-page__card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 16px;
  background: var(--color-primary-bg);
  border: 1px solid transparent;
  border-radius: 8px;
  color: var(--color-text);
  transition: border-color 0.15s ease;
}

.tags-page__card:hover {
  border-color: var(--color-primary-light);
}

.tags-page__tag-badge {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
}

.tags-page__tag-count {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

.tags-page__empty {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* --- Tag Archive --- */
.tag-archive__title {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.tag-archive__icon {
  color: var(--color-primary);
}

.tag-archive__desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 2em;
}

.tag-archive__list {
  display: flex;
  flex-direction: column;
}

.tag-archive__item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  color: var(--color-text);
  border-radius: 4px;
  transition: background 0.12s ease;
}

.tag-archive__item:hover {
  background: var(--color-primary-bg);
}

.tag-archive__item-num {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--color-primary);
  font-weight: 700;
  flex-shrink: 0;
}

.tag-archive__item-title {
  flex: 1;
  font-size: 0.9rem;
  font-weight: 500;
}

.tag-archive__item-date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  flex-shrink: 0;
}

.tag-archive__back {
  margin-top: 2em;
  padding-top: 1em;
  border-top: 1px solid var(--color-border);
}

.tag-archive__back a {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.tag-archive__back a:hover {
  color: var(--color-primary);
}

/* --- 404 Page --- */
.error-page {
  text-align: center;
  padding: 4em 0;
}

.error-page__code {
  font-family: var(--font-mono);
  font-size: 5rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 8px;
  opacity: 0.3;
}

.error-page__title {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.error-page__desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 2em;
}

.error-page__actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.error-page__btn {
  display: inline-flex;
  padding: 8px 20px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  transition: background 0.15s ease;
}

.error-page__btn:hover {
  background: var(--color-primary-dark);
  color: #fff;
}

.error-page__btn--secondary {
  background: var(--color-primary-bg);
  color: var(--color-primary);
}

.error-page__btn--secondary:hover {
  background: var(--color-primary-bg-hover);
  color: var(--color-primary-dark);
}

/* --- Footer --- */
.doc-footer {
  padding: 0 40px 32px;
  max-width: var(--content-max-width);
}

.doc-footer__divider {
  height: 1px;
  background: var(--color-border);
  margin-bottom: 20px;
}

.doc-footer__content {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.doc-footer__copyright {
  margin-bottom: 4px;
}

.doc-footer__disclaimer {
  margin-bottom: 4px;
  font-weight: 500;
}

.doc-footer__risk {
  margin-bottom: 8px;
  font-size: 0.7rem;
  color: #9ca3af;
}

.doc-footer__links a {
  color: var(--color-text-muted);
  font-size: 0.75rem;
}

.doc-footer__links a:hover {
  color: var(--color-primary);
}

.doc-footer__sep {
  margin: 0 6px;
  color: var(--color-border);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  :root {
    --sidebar-width: 0px;
  }

  .doc-header__left {
    min-width: auto;
  }

  .doc-header__toggle {
    display: inline-flex;
  }

  .sidebar {
    transform: translateX(-100%);
    width: 260px;
    transition: transform 0.2s ease;
    box-shadow: none;
  }

  .sidebar--open {
    transform: translateX(0);
    box-shadow: 2px 0 12px rgba(0, 0, 0, 0.1);
  }

  .doc-main {
    margin-left: 0;
  }

  .doc-content {
    padding: 20px 16px;
  }

  .doc-footer {
    padding: 0 16px 24px;
  }

  .home__title {
    font-size: 1.5rem;
  }

  .post__title {
    font-size: 1.4rem;
  }

  .post__nav-inner {
    grid-template-columns: 1fr;
  }

  .callout {
    flex-direction: column;
    gap: 8px;
  }

  .tags-page__grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  }
}

@media (max-width: 480px) {
  .posts-page__item {
    flex-direction: column;
    gap: 8px;
  }

  .posts-page__item-meta {
    text-align: left;
  }

  .posts-page__item-tags {
    justify-content: flex-start;
  }

  .home__post-date {
    display: none;
  }

  .tag-archive__item-date {
    display: none;
  }

  .error-page__code {
    font-size: 3.5rem;
  }
}
/* TOC doc-style */
.post__toc{border:1px solid var(--border,#e2e8f0);border-radius:4px;padding:16px 20px;margin:0 0 20px;background:var(--bg2,#f8fafc)}
.post__toc-title{font-size:.85rem;font-weight:700;text-transform:uppercase;letter-spacing:.5px;color:var(--text2);margin-bottom:10px}
.post__toc-list{list-style:none;padding:0;margin:0}
.post__toc-item{padding:4px 0;border-bottom:1px solid var(--border,#f1f5f9)}
.post__toc-item--l3{padding-left:16px;font-size:.9rem}
.post__toc-item a{color:var(--text);text-decoration:none;font-size:.9rem}
.post__toc-item a:hover{color:var(--primary,#7c3aed)}
/* Reading time & revision */
.post__reading-time,.post__revision{font-size:.8rem;color:var(--text3,#94a3b8)}
/* Author credit */
.post__credit{display:flex;gap:12px;align-items:flex-start;padding:16px;margin:24px 0;border:1px solid var(--border,#e2e8f0);border-radius:4px;background:var(--bg2,#f8fafc)}
.post__credit-label{font-size:.7rem;text-transform:uppercase;letter-spacing:1px;color:var(--text3);padding:2px 8px;border:1px solid var(--border);border-radius:2px;flex-shrink:0}
.post__credit-info{display:flex;flex-direction:column;gap:2px}
.post__credit-info strong{font-size:.9rem}
.post__credit-info span{font-size:.8rem;color:var(--text2)}
/* Sidebar download link */
.sidebar__link--download{color:var(--primary,#7c3aed) !important;font-weight:600}
/* Language switcher */
.locale-bar{display:flex;align-items:center;gap:4px;margin-right:8px;font-family:monospace}
.locale-bar__lbl{font-size:.7rem;color:var(--text-muted,#999);margin-right:2px}
.locale-bar__item{font-size:.7rem;padding:1px 5px;border:1px solid var(--border,#ddd);border-radius:3px;color:var(--text-muted,#999);text-decoration:none;transition:all .2s}
.locale-bar__item:hover{color:var(--text,#333);border-color:var(--text,#333)}
.locale-bar__item.locale-bar__on{color:var(--primary,#f0b90b);border-color:var(--primary,#f0b90b);font-weight:700}