/* Base theme layer: variables, typography, shell layout, navigation. */

@font-face {
  font-family: "XinYiGuanHeiTi";
  src: url("../fonts/XinYiGuanHeiTi.ttf") format("truetype");
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

:root {
  --ld-blue: #2563eb;
  --ld-blue-strong: #1d4ed8;
  --ld-green: #10b981;
  --ld-rose: #f43f5e;
  --ld-ink: #0f172a;
  --ld-muted: #64748b;
  --ld-border: #dbe3ef;
  --ld-surface: #f7fafc;
  --ld-surface-2: #edf4f8;
  --ld-card: #ffffff;
  --ld-radius: 8px;
  --ld-shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05), 0 1px 8px rgba(15, 23, 42, 0.04);
  --ld-shadow-md: 0 12px 28px rgba(15, 23, 42, 0.1);
  --ld-shadow-lg: 0 22px 60px rgba(15, 23, 42, 0.14);
  --ld-content: 1180px;
}

html[data-bs-theme="dark"],
html[data-theme="dark"] {
  --ld-ink: #e5edf7;
  --ld-muted: #a8b5c7;
  --ld-border: #324155;
  --ld-surface: #111827;
  --ld-surface-2: #172033;
  --ld-card: #0f172a;
  --ld-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.28), 0 1px 8px rgba(0, 0, 0, 0.22);
  --ld-shadow-md: 0 12px 30px rgba(0, 0, 0, 0.38);
  --ld-shadow-lg: 0 24px 64px rgba(0, 0, 0, 0.44);
}

html,
body {
  overflow-x: hidden;
}

body {
  color: var(--pst-color-text-base, var(--ld-ink));
  background:
    linear-gradient(180deg, rgba(37, 99, 235, 0.045), transparent 24rem),
    var(--pst-color-background, #fff);
}

a {
  text-underline-offset: 0.18em;
}

.navbar-brand .logo__title {
  font-family: "XinYiGuanHeiTi", system-ui, sans-serif !important;
  letter-spacing: 0;
}

.navbar-brand .logo__image {
  width: auto;
  height: 1.75rem;
  margin-right: 0.5rem;
  vertical-align: middle;
}

a.navbar-brand,
a.navbar-brand:hover,
a.navbar-brand:focus,
a.navbar-brand:focus-visible {
  border-bottom: 0 !important;
  box-shadow: none !important;
  text-decoration: none !important;
}

.bd-header {
  border-bottom: 1px solid color-mix(in srgb, var(--pst-color-border, var(--ld-border)) 74%, transparent);
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(16px) saturate(1.35);
  -webkit-backdrop-filter: blur(16px) saturate(1.35);
}

html[data-bs-theme="dark"] .bd-header,
html[data-theme="dark"] .bd-header {
  background: rgba(15, 23, 42, 0.86);
}

.bd-header .bd-header__inner {
  justify-content: center;
}

.bd-header .navbar-header-items__start {
  margin-right: 0;
}

.bd-navbar-elements .nav-link,
.bd-navbar-elements .dropdown-toggle {
  border-radius: 7px;
  font-size: 0.9rem;
  font-weight: 600;
}

.bd-navbar-elements .nav-link:hover,
.bd-navbar-elements .dropdown-toggle:hover {
  background: color-mix(in srgb, var(--pst-color-primary, var(--ld-blue)) 10%, transparent);
}

.bd-navbar-elements .dropdown-menu {
  border: 1px solid var(--pst-color-border, var(--ld-border));
  border-radius: var(--ld-radius);
  box-shadow: var(--ld-shadow-md);
  padding: 0.35rem;
}

.bd-navbar-elements .dropdown-item {
  border-radius: 6px;
  font-size: 0.88rem;
}

.bd-footer {
  margin-top: 4rem;
  border-top: 1px solid var(--pst-color-border, var(--ld-border));
  background: var(--pst-color-surface, var(--ld-surface));
}

.bd-main .bd-content .bd-article-container {
  max-width: 58rem;
}

.bd-article {
  line-height: 1.78;
}

.bd-article h1,
.bd-article h2,
.bd-article h3 {
  letter-spacing: 0;
}

.bd-article h2 {
  margin-top: 2.4rem;
}

.bd-links__title {
  font-size: 0;
}

.bd-links__title::after {
  content: "本节导航";
  font-size: 1.1rem;
}

ul.navbar-icon-links a.pst-navbar-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 7px;
  color: var(--pst-color-text-muted, var(--ld-muted));
  transition: color 0.15s ease, background-color 0.15s ease;
}

ul.navbar-icon-links a.pst-navbar-icon:hover,
ul.navbar-icon-links a.pst-navbar-icon:focus,
ul.navbar-icon-links a.pst-navbar-icon:focus-visible {
  background: color-mix(in srgb, var(--pst-color-primary, var(--ld-blue)) 10%, transparent);
  color: var(--pst-color-primary, var(--ld-blue));
  text-decoration: none;
}

ul.navbar-icon-links a.pst-navbar-icon i {
  display: block;
  width: 1.25rem;
  height: 1.25rem;
  line-height: 1.25rem;
  text-align: center;
}

ul.navbar-icon-links a.pst-navbar-icon[data-social="gitee"] {
  position: relative;
}

ul.navbar-icon-links a.pst-navbar-icon[data-social="gitee"] img.icon-link-image {
  display: block;
  flex-shrink: 0;
  width: 1.25rem;
  height: 1.25rem;
  object-fit: contain;
  opacity: 1;
}

ul.navbar-icon-links a.pst-navbar-icon[data-social="gitee"]::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 1.25rem;
  height: 1.25rem;
  background: currentColor;
  transform: translate(-50%, -50%);
  pointer-events: none;
  -webkit-mask: url("data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHJvbGU9ImltZyIgdmlld0JveD0iMCAwIDI0IDI0Ij48cGF0aCBmaWxsPSIjMDAwIiBkPSJNMTEuOTg0IDBBMTIgMTIgMCAwIDAgMCAxMmExMiAxMiAwIDAgMCAxMiAxMiAxMiAxMiAwIDAgMCAxMi0xMkExMiAxMiAwIDAgMCAxMiAwYTEyIDEyIDAgMCAwLS4wMTYgMHptNi4wOSA1LjMzM2MuMzI4IDAgLjU5My4yNjYuNTkyLjU5M3YxLjQ4MmEuNTk0LjU5NCAwIDAgMS0uNTkzLjU5Mkg5Ljc3N2MtLjk4MiAwLTEuNzc4Ljc5Ni0xLjc3OCAxLjc3OHY1LjYzYzAgLjMyNy4yNjYuNTkyLjU5My41OTJoNS42M2MuOTgyIDAgMS43NzgtLjc5NiAxLjc3OC0xLjc3OHYtLjI5NmEuNTkzLjU5MyAwIDAgMC0uNTkyLS41OTNoLTQuMTVhLjU5Mi41OTIgMCAwIDEtLjU5Mi0uNTkydi0xLjQ4MmEuNTkzLjU5MyAwIDAgMSAuNTkzLS41OTJoNi44MTVjLjMyNyAwIC41OTMuMjY1LjU5My41OTJ2My40MDhhNCA0IDAgMCAxLTQgNEg1LjkyNmEuNTkzLjU5MyAwIDAgMS0uNTkzLS41OTNWOS43NzhhNC40NDQgNC40NDQgMCAwIDEgNC40NDUtNC40NDRoOC4yOTZaIi8+PC9zdmc+") center / contain no-repeat;
  mask: url("data:image/svg+xml;base64,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") center / contain no-repeat;
}

@media (max-width: 767.98px) {
  .bd-header .navbar-brand {
    max-width: 62vw;
  }

  .navbar-brand .logo__title {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
}