:root {
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Microsoft YaHei", "PingFang SC", sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  --page: #07111f;
  --page-elevated: #0b1828;
  --surface: rgba(13, 29, 47, 0.76);
  --surface-strong: rgba(17, 37, 58, 0.94);
  --border: rgba(168, 224, 255, 0.17);
  --border-strong: rgba(170, 228, 255, 0.34);
  --text: #f1f8fc;
  --muted: #9db1c1;
  --quiet: #6f8799;
  --ice: #85ddff;
  --ice-bright: #d4f4ff;
  --header: rgba(7, 17, 31, 0.76);
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.28);
}

:root[data-theme="light"] {
  --page: #eef7fc;
  --page-elevated: #e3f0f8;
  --surface: rgba(255, 255, 255, 0.82);
  --surface-strong: rgba(255, 255, 255, 0.96);
  --border: rgba(35, 104, 137, 0.16);
  --border-strong: rgba(35, 104, 137, 0.3);
  --text: #102638;
  --muted: #526b7c;
  --quiet: #718795;
  --ice: #0879ae;
  --ice-bright: #0b6590;
  --header: rgba(238, 247, 252, 0.8);
  --shadow: 0 28px 80px rgba(35, 76, 103, 0.13);
}

* {
  box-sizing: border-box;
  touch-action: manipulation;
}

[hidden] {
  display: none !important;
}

html {
  min-width: 300px;
  min-height: 100%;
  background: var(--page);
  scroll-behavior: smooth;
}

body.guide-body {
  min-width: 300px;
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 18% -8%, rgba(71, 183, 238, 0.16), transparent 31rem),
    radial-gradient(circle at 85% 25%, rgba(87, 224, 198, 0.08), transparent 28rem),
    var(--page);
  color: var(--text);
}

a {
  color: var(--ice-bright);
  -webkit-tap-highlight-color: transparent;
}

a:focus-visible,
button:focus-visible,
.guide-table-wrap:focus-visible,
.guide-toc a:focus-visible {
  outline: 2px solid var(--ice);
  outline-offset: 3px;
}

.guide-skip {
  position: absolute;
  left: 12px;
  top: -40px;
  z-index: 40;
  padding: 8px 12px;
  border-radius: 10px;
  background: var(--surface-strong);
  color: var(--text);
  text-decoration: none;
}

.guide-skip:focus {
  top: 12px;
}

.guide-header,
.guide-main,
.guide-footer {
  width: min(1180px, calc(100% - 40px));
  margin-left: auto;
  margin-right: auto;
}

.guide-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 76px;
  border-bottom: 1px solid var(--border);
  background: var(--header);
  backdrop-filter: blur(18px);
}

.guide-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  text-decoration: none;
}

.guide-brand img {
  width: 42px;
  height: 42px;
  border: 1px solid var(--border-strong);
  border-radius: 13px;
  object-fit: cover;
}

.guide-brand strong,
.guide-brand small {
  display: block;
}

.guide-brand small {
  color: var(--muted);
  font-size: 0.75rem;
}

.guide-header__actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.guide-language {
  position: relative;
}

.guide-language summary,
.guide-navigation-button,
.guide-drawer__close {
  display: inline-flex;
  width: 44px;
  min-width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  font: inherit;
  font-size: 0.76rem;
  font-weight: 800;
  list-style: none;
}

.guide-language summary::-webkit-details-marker {
  display: none;
}

.guide-language[open] summary,
.guide-language summary:hover,
.guide-navigation-button:hover,
.guide-drawer__close:hover {
  border-color: var(--border-strong);
  background: var(--surface-strong);
}

.guide-languages {
  position: absolute;
  z-index: 90;
  top: calc(100% + 10px);
  right: 0;
  width: 210px;
  padding: 10px;
  border: 1px solid var(--border-strong);
  border-radius: 16px;
  background: var(--page-elevated);
  box-shadow: var(--shadow);
}

.guide-languages ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.guide-languages a {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  padding: 0 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  text-decoration: none;
}

.guide-languages a[aria-current="page"] {
  border-color: var(--border-strong);
  background: var(--surface-strong);
  color: var(--text);
}

.guide-desktop-navigation {
  min-width: 0;
  margin-inline: auto;
}

.guide-desktop-navigation > ul,
.guide-desktop-navigation ul,
.guide-mega__groups {
  padding: 0;
  margin: 0;
  list-style: none;
}

.guide-desktop-navigation > ul {
  display: flex;
  align-items: center;
  gap: 4px;
}

.guide-desktop-navigation__item {
  position: relative;
}

.guide-desktop-navigation__primary {
  display: flex;
  min-height: 44px;
  align-items: stretch;
  border-radius: 12px;
}

.guide-desktop-navigation__primary > a,
.guide-desktop-navigation__toggle {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.78rem;
  font-weight: 760;
  white-space: nowrap;
}

.guide-desktop-navigation__primary > a {
  padding: 0 7px 0 10px;
  border-radius: 12px 4px 4px 12px;
  text-decoration: none;
}

.guide-desktop-navigation__item--guide .guide-desktop-navigation__primary > a {
  padding-inline: 10px;
  border-radius: 12px;
}

.guide-desktop-navigation__toggle {
  width: 28px;
  padding: 0;
  border-radius: 4px 12px 12px 4px;
  cursor: pointer;
}

.guide-desktop-navigation__primary:hover,
.guide-desktop-navigation__primary:focus-within,
.guide-desktop-navigation__primary > a[aria-current] {
  background: color-mix(in srgb, var(--ice) 10%, var(--surface));
}

.guide-desktop-navigation__primary > a:hover,
.guide-desktop-navigation__primary > a:focus-visible,
.guide-desktop-navigation__toggle:hover,
.guide-desktop-navigation__toggle:focus-visible,
.guide-desktop-navigation__toggle[aria-expanded="true"] {
  color: var(--text);
}

.guide-mega {
  position: absolute;
  z-index: 80;
  top: calc(100% + 10px);
  left: 0;
  width: min(450px, calc(100vw - 40px));
  padding: 16px;
  border: 1px solid var(--border-strong);
  border-radius: 18px;
  background: var(--page-elevated);
  box-shadow: var(--shadow);
}

.guide-mega--event {
  left: 50%;
  width: min(330px, calc(100vw - 40px));
  transform: translateX(-50%);
}

.guide-mega--database {
  right: 0;
  left: auto;
}

.guide-mega__groups {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.guide-mega--event .guide-mega__groups {
  grid-template-columns: 1fr;
}

.guide-mega__groups p,
.guide-drawer__groups > li > p {
  margin: 0 0 8px;
  color: var(--quiet);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.guide-mega__groups a,
.guide-drawer__groups a {
  display: flex;
  min-height: 40px;
  align-items: center;
  gap: 9px;
  padding: 7px 9px;
  border-radius: 9px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 680;
  line-height: 1.35;
  text-decoration: none;
}

.guide-navigation-thumbnail {
  display: grid;
  width: 28px;
  height: 28px;
  place-items: center;
  flex: 0 0 28px;
  overflow: hidden;
  border-radius: 8px;
  background: color-mix(in srgb, var(--ice) 7%, var(--surface));
}

.guide-navigation-thumbnail img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.guide-mega__groups a:hover,
.guide-mega__groups a:focus-visible,
.guide-drawer__groups a:hover,
.guide-drawer__groups a:focus-visible {
  background: color-mix(in srgb, var(--ice) 10%, var(--surface));
  color: var(--text);
}

.guide-mega__hub,
.guide-drawer__hub {
  display: flex;
  min-height: 44px;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 14px;
  padding: 10px 12px 0;
  border-top: 1px solid var(--border);
  color: var(--ice);
  font-size: 0.78rem;
  font-weight: 800;
  text-decoration: none;
}

.guide-navigation-button {
  display: none;
  font-size: 1.05rem;
}

.guide-drawer-backdrop {
  position: fixed;
  z-index: 100;
  inset: 0;
  display: flex;
  justify-content: flex-end;
  background: rgba(1, 8, 15, 0.56);
  backdrop-filter: blur(7px);
}

.guide-drawer {
  width: min(440px, 100%);
  height: 100%;
  height: 100dvh;
  overflow-y: auto;
  padding:
    max(22px, env(safe-area-inset-top))
    max(22px, env(safe-area-inset-right))
    max(22px, env(safe-area-inset-bottom))
    max(22px, env(safe-area-inset-left));
  border-left: 1px solid var(--border);
  outline: none;
  background: var(--page-elevated);
  box-shadow: -28px 0 80px rgba(0, 0, 0, 0.26);
  animation: guide-drawer-enter 220ms cubic-bezier(0.22, 1, 0.36, 1);
}

.guide-drawer__panel {
  display: flex;
  min-height: 100%;
  flex-direction: column;
}

.guide-drawer__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.guide-drawer__header h2 {
  margin: 0;
  font-size: 1.55rem;
  letter-spacing: -0.04em;
}

.guide-drawer__header .guide-eyebrow {
  margin-bottom: 8px;
}

.guide-drawer__navigation {
  display: flex;
  min-height: 0;
  flex: 1;
  flex-direction: column;
  padding-top: 18px;
}

.guide-drawer__navigation ul {
  padding: 0;
  margin: 0;
  list-style: none;
}

.guide-drawer__root {
  display: grid;
  gap: 8px;
}

.guide-drawer__root > li > button,
.guide-drawer__root > li > a {
  display: flex;
  width: 100%;
  min-height: 54px;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 13px;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  font: inherit;
  font-size: 0.88rem;
  font-weight: 780;
  text-align: start;
  text-decoration: none;
}

.guide-drawer__root > li > button[aria-expanded="true"] {
  border-color: var(--border-strong);
  border-radius: 13px 13px 8px 8px;
  background: color-mix(in srgb, var(--ice) 7%, var(--surface));
}

.guide-drawer__chevron {
  transition: transform 160ms ease;
}

.guide-drawer__root > li > button[aria-expanded="true"] .guide-drawer__chevron {
  transform: rotate(180deg);
}

.guide-drawer__accordion {
  padding: 12px 8px 4px;
  border: 1px solid var(--border);
  border-top: 0;
  border-radius: 0 0 13px 13px;
}

.guide-drawer__groups {
  display: grid;
  gap: 16px;
}

.guide-drawer__groups > li > ul {
  display: grid;
  gap: 5px;
}

.guide-drawer__groups a {
  min-height: 46px;
  padding: 9px 12px;
  font-size: 0.84rem;
  font-weight: 700;
}

.guide-drawer__groups .guide-navigation-thumbnail {
  width: 32px;
  height: 32px;
  flex-basis: 32px;
}

.guide-drawer__hub {
  min-height: 50px;
  margin-top: 12px;
  padding: 12px 8px 4px;
  font-size: 0.84rem;
}

html.guide-drawer-open,
body.guide-drawer-open {
  overflow: hidden;
  overscroll-behavior: none;
}

@keyframes guide-drawer-enter {
  from { transform: translateX(100%); }
  to { transform: translateX(0); }
}

.guide-main {
  padding: 36px 0 72px;
}

.guide-eyebrow {
  margin: 0 0 10px;
  color: var(--ice);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.guide-eyebrow.brand-eyebrow {
  text-transform: none;
}

.guide-index__header h1,
.guide-article__header h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3.6rem);
  line-height: 1.08;
}

.guide-index__header p,
.guide-article__description {
  max-width: 760px;
  margin: 16px 0 0;
  color: var(--muted);
  line-height: 1.7;
}

.guide-index__list {
  display: grid;
  gap: 16px;
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
}

.guide-card {
  display: grid;
  gap: 10px;
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: 22px;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  color: inherit;
  text-decoration: none;
  box-shadow: var(--shadow);
}

.guide-card h2 {
  margin: 0;
  font-size: 1.25rem;
}

.guide-card p,
.guide-card time {
  margin: 0;
  color: var(--muted);
}

.guide-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 28px;
  margin: 22px 0 0;
}

.guide-meta div {
  margin: 0;
}

.guide-meta dt {
  color: var(--quiet);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.guide-meta dd {
  margin: 4px 0 0;
}

.guide-toc {
  margin: 28px 0;
  padding: 18px 20px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--surface);
}

.guide-toc h2 {
  margin: 0 0 12px;
  font-size: 0.86rem;
}

.guide-toc ol {
  margin: 0;
  padding-left: 1.15rem;
}

.guide-toc__level-3 {
  margin-left: 12px;
}

.guide-prose {
  max-width: 760px;
  font-size: 1.02rem;
  line-height: 1.8;
}

.guide-prose h1,
.guide-prose h2,
.guide-prose h3,
.guide-prose h4 {
  line-height: 1.25;
}

.guide-prose h2 {
  margin: 2.1rem 0 0.8rem;
  font-size: 1.55rem;
}

.guide-prose h3 {
  margin: 1.6rem 0 0.7rem;
  font-size: 1.2rem;
}

.guide-prose p,
.guide-prose ul,
.guide-prose ol,
.guide-prose blockquote {
  margin: 0 0 1rem;
}

.guide-prose ul,
.guide-prose ol {
  padding-inline-start: 1.3rem;
}

.guide-prose blockquote {
  padding: 0.2rem 0 0.2rem 1rem;
  border-inline-start: 3px solid var(--ice);
  color: var(--muted);
}

.guide-prose hr {
  margin: 2rem 0;
  border: 0;
  border-top: 1px solid var(--border);
}

.guide-table-wrap {
  overflow-x: auto;
  margin: 0 0 1.4rem;
}

.guide-table-wrap table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.guide-table-wrap th,
.guide-table-wrap td {
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--border);
  vertical-align: top;
}

.guide-table-wrap th {
  background: var(--surface-strong);
}

.guide-enhance {
  margin: 1.5rem 0;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 22px;
  background: var(--surface);
}

.guide-enhance .bear-hunt-guide-page {
  width: 100%;
  margin: 0;
  padding: 0;
}

.guide-enhance__fallback h2 {
  margin: 0 0 10px;
  font-size: 1.2rem;
}

.guide-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding: 24px 0 36px;
  border-top: 1px solid var(--border);
  color: var(--muted);
}

.guide-text[dir="rtl"] {
  unicode-bidi: isolate;
}

@media (max-width: 980px) {
  .guide-desktop-navigation {
    display: none;
  }

  .guide-navigation-button {
    display: inline-flex;
  }

  .guide-brand small {
    display: none;
  }
}

@media (max-width: 720px) {
  .guide-header,
  .guide-main,
  .guide-footer {
    width: min(100% - 28px, 1180px);
  }

  .guide-header {
    min-height: 68px;
  }

  .guide-brand img {
    width: 38px;
    height: 38px;
  }
}

@media (max-width: 430px) {
  .guide-drawer {
    padding:
      max(18px, env(safe-area-inset-top))
      max(18px, env(safe-area-inset-right))
      max(18px, env(safe-area-inset-bottom))
      max(18px, env(safe-area-inset-left));
  }
}

@media (max-width: 340px) {
  .guide-header,
  .guide-main,
  .guide-footer {
    width: calc(100% - 20px);
  }

  .guide-brand strong {
    font-size: 0.88rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .guide-drawer {
    animation: none;
  }
}