html {
  --bas-bg: #f7f8f5;
  --bas-surface: #fff;
  --bas-text: #202124;
  --bas-muted: #5c6670;
  --bas-heading: #17202a;
  --bas-link: #1b5f8f;
  --bas-link-hover: #0f3f63;
  --bas-rule: #d9dfd5;
  --bas-code-bg: #eef2f4;
  --bas-pre-bg: #f0f3f5;
  --bas-control-border: #bcc7d1;
  --bas-control-bg: #fff;
  --bas-control-text: #202124;
  --bas-button-bg: #1b5f8f;
  --bas-button-border: #164d74;
  --bas-button-text: #fff;
  --bas-button-hover-bg: #144b72;
  --bas-button-secondary-bg: #f3f8fc;
  --bas-button-secondary-border: #b7d8ec;
  --bas-button-secondary-text: #174a6f;
  --bas-button-secondary-hover-bg: #e3f0f8;
  --bas-nav-bg: #202124;
  --bas-nav-text: #fff;
  --bas-accent: #f2b84b;
  --bas-nav-current: #f7d98c;
  --bas-shadow: rgba(32, 33, 36, 0.08);
  --bas-jumbotron-bg: #e9ecef;
  --bas-jumbotron-text: #202124;
  box-sizing: border-box;
  background: var(--bas-bg);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) {
    --bas-bg: #101315;
    --bas-surface: #171b1f;
    --bas-text: #e7e2d5;
    --bas-muted: #b8c0c4;
    --bas-heading: #f3d58f;
    --bas-link: #83c5f4;
    --bas-link-hover: #b7dcff;
    --bas-rule: #34424a;
    --bas-code-bg: #20272d;
    --bas-pre-bg: #171f25;
    --bas-control-border: #4a5962;
    --bas-control-bg: #151a1e;
    --bas-control-text: #e7e2d5;
    --bas-button-bg: #83c5f4;
    --bas-button-border: #b7dcff;
    --bas-button-text: #101315;
    --bas-button-hover-bg: #b7dcff;
    --bas-button-secondary-bg: rgba(131, 197, 244, 0.14);
    --bas-button-secondary-border: #3f86ba;
    --bas-button-secondary-text: #b7dcff;
    --bas-button-secondary-hover-bg: rgba(131, 197, 244, 0.24);
    --bas-nav-bg: #0f1113;
    --bas-nav-text: #f6f0df;
    --bas-nav-current: #f4d67d;
    --bas-shadow: rgba(0, 0, 0, 0.36);
    --bas-jumbotron-bg: #181e23;
    --bas-jumbotron-text: #e7e2d5;
    color-scheme: dark;
  }
}

html[data-theme="dark"] {
  --bas-bg: #101315;
  --bas-surface: #171b1f;
  --bas-text: #e7e2d5;
  --bas-muted: #b8c0c4;
  --bas-heading: #f3d58f;
  --bas-link: #83c5f4;
  --bas-link-hover: #b7dcff;
  --bas-rule: #34424a;
  --bas-code-bg: #20272d;
  --bas-pre-bg: #171f25;
  --bas-control-border: #4a5962;
  --bas-control-bg: #151a1e;
  --bas-control-text: #e7e2d5;
  --bas-button-bg: #83c5f4;
  --bas-button-border: #b7dcff;
  --bas-button-text: #101315;
  --bas-button-hover-bg: #b7dcff;
  --bas-button-secondary-bg: rgba(131, 197, 244, 0.14);
  --bas-button-secondary-border: #3f86ba;
  --bas-button-secondary-text: #b7dcff;
  --bas-button-secondary-hover-bg: rgba(131, 197, 244, 0.24);
  --bas-nav-bg: #0f1113;
  --bas-nav-text: #f6f0df;
  --bas-nav-current: #f4d67d;
  --bas-shadow: rgba(0, 0, 0, 0.36);
  --bas-jumbotron-bg: #181e23;
  --bas-jumbotron-text: #e7e2d5;
  color-scheme: dark;
}

html[data-theme="light"] {
  color-scheme: light;
}

*,
*::before,
*::after {
  box-sizing: inherit;
}

body {
  background: var(--bas-bg);
  margin: 0;
}

body.bas-page {
  color: var(--bas-text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
}

body.bas-page--dark-tool {
  background: #000;
}

body.bas-page--dark-tool,
body.bas-page--dark-tool .bas-page__main,
body.bas-page--dark-tool :where(.container-info, .container-main) {
  background: #000;
  color: #fff;
}

.bas-site-nav {
  background: var(--bas-nav-bg);
  border-bottom: 4px solid var(--bas-accent);
  color: var(--bas-nav-text);
  display: block;
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.3;
  position: relative;
  z-index: 1000;
}

.bas-page__main {
  margin: 0 auto;
  max-width: 900px;
  padding: 28px 18px 56px;
}

.bas-page--narrow .bas-page__main {
  max-width: 760px;
}

.bas-page--wide .bas-page__main,
.bas-page--tool .bas-page__main {
  max-width: 1140px;
}

.bas-page--dark-tool .bas-page__main {
  margin: 0;
  max-width: none;
  padding: 0;
}

.bas-page :where(h1, h2, h3, h4) {
  color: var(--bas-heading);
  font-family: inherit;
  font-weight: 700;
  line-height: 1.2;
  margin: 1.4em 0 0.5em;
}

.bas-page :where(h1) {
  font-size: 2rem;
  margin-top: 0;
}

.bas-page :where(h2) {
  border-bottom: 1px solid var(--bas-rule);
  font-size: 1.5rem;
  padding-bottom: 0.2em;
}

.bas-page :where(h3) {
  font-size: 1.2rem;
}

.bas-page :where(p, ul, ol, dl, table, blockquote, pre) {
  margin-top: 0;
  margin-bottom: 1rem;
}

.bas-page :where(ul, ol) {
  padding-left: 1.45rem;
}

.bas-page :where(a) {
  color: var(--bas-link);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.16em;
}

.bas-page :where(a:hover, a:focus) {
  color: var(--bas-link-hover);
}

.bas-page :where(.btn) {
  border-radius: 5px;
  font-weight: 500;
  text-decoration: none;
}

.bas-page :where(.btn-primary) {
  background-color: var(--bas-button-bg);
  border-color: var(--bas-button-border);
  color: var(--bas-button-text);
}

.bas-page :where(.btn-primary:hover, .btn-primary:focus, .btn-primary:active) {
  background-color: var(--bas-button-hover-bg);
  border-color: var(--bas-button-border);
  color: var(--bas-button-text);
}

.bas-page :where(.btn-default) {
  background-color: var(--bas-button-secondary-bg);
  border-color: var(--bas-button-secondary-border);
  color: var(--bas-button-secondary-text);
}

.bas-page :where(.btn-default:hover, .btn-default:focus, .btn-default:active) {
  background-color: var(--bas-button-secondary-hover-bg);
  border-color: var(--bas-button-secondary-border);
  color: var(--bas-button-secondary-text);
}

.bas-page :where(img) {
  height: auto;
  max-width: 100%;
}

.bas-lazy-media {
  background: var(--bas-code-bg);
}

.bas-video-embed {
  aspect-ratio: 16 / 9;
  border: 0;
  height: auto;
  max-width: 100%;
  width: 100%;
}

.bas-video-lite {
  aspect-ratio: 16 / 9;
  background: #111820;
  border: 0;
  color: #fff;
  cursor: pointer;
  display: block;
  max-width: 100%;
  overflow: hidden;
  padding: 0;
  position: relative;
  width: 100%;
}

.bas-video-lite img {
  display: block;
  height: 100%;
  object-fit: cover;
  opacity: 0.86;
  width: 100%;
}

.bas-video-lite::before {
  background: rgba(0, 0, 0, 0.68);
  border-radius: 999px;
  content: "";
  height: 54px;
  left: 50%;
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  transition: background 0.16s ease;
  width: 54px;
  z-index: 1;
}

.bas-video-lite::after {
  border-bottom: 12px solid transparent;
  border-left: 18px solid currentColor;
  border-top: 12px solid transparent;
  content: "";
  left: calc(50% + 3px);
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
}

.bas-video-lite:hover::before,
.bas-video-lite:focus::before {
  background: rgba(27, 95, 143, 0.92);
}

.bas-button {
  align-items: center;
  background: var(--bas-button-bg);
  border: 1px solid var(--bas-button-border);
  border-radius: 5px;
  color: var(--bas-button-text);
  display: inline-flex;
  font-size: 0.92rem;
  font-weight: 600;
  gap: 0.35rem;
  line-height: 1.2;
  padding: 0.48rem 0.72rem;
  text-decoration: none;
}

.bas-button:hover,
.bas-button:focus {
  background: var(--bas-button-hover-bg);
  color: var(--bas-button-text);
  text-decoration: none;
}

.bas-button--subtle {
  background: var(--bas-button-bg);
}

.bas-page-header {
  border-bottom: 1px solid var(--bas-rule);
  margin-bottom: 1.4rem;
  padding-bottom: 0.8rem;
}

.bas-page-header h1 {
  margin-bottom: 0.35rem;
}

.bas-page-header p {
  margin-bottom: 0;
  max-width: 64rem;
}

.bas-wp-posts {
  margin: 1rem 0 2rem;
}

.bas-wp-posts__status {
  background: var(--bas-surface);
  border: 1px solid var(--bas-rule);
  border-radius: 6px;
  color: var(--bas-text);
  margin: 0;
  padding: 0.85rem 1rem;
}

.bas-wp-posts__status--error {
  border-color: #b36b6b;
}

.bas-post-list {
  display: grid;
  gap: 1.1rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.bas-post-list--compact {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.bas-post-card {
  background: var(--bas-surface);
  border: 1px solid var(--bas-rule);
  border-radius: 7px;
  box-shadow: 0 1px 2px var(--bas-shadow);
  display: flex;
  flex-direction: column;
  min-height: 100%;
  overflow: hidden;
}

.bas-post-card__image-link {
  background: var(--bas-code-bg);
  display: block;
}

.bas-post-card__image-link img {
  aspect-ratio: 16 / 9;
  display: block;
  object-fit: cover;
  width: 100%;
}

.bas-post-card__body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 1rem;
}

.bas-post-card__meta,
.bas-post__meta {
  color: var(--bas-muted);
  font-size: 0.86rem;
  margin-bottom: 0.45rem;
}

.bas-post-card__title {
  border: 0;
  font-size: 1.08rem;
  margin: 0 0 0.6rem;
  padding: 0;
}

.bas-post-card__excerpt {
  flex: 1;
  font-size: 0.95rem;
}

.bas-post-card .bas-button {
  align-self: flex-start;
  margin-top: 0.25rem;
}

.bas-post {
  background: var(--bas-surface);
  border: 1px solid var(--bas-rule);
  border-radius: 7px;
  box-shadow: 0 1px 2px var(--bas-shadow);
  padding: clamp(1rem, 2vw, 1.6rem);
}

.bas-post__back {
  display: inline-block;
  font-size: 0.92rem;
  margin-bottom: 1rem;
}

.bas-post__featured-image {
  border-radius: 6px;
  display: block;
  margin: 0 0 1.25rem;
  max-height: 560px;
  object-fit: contain;
  width: 100%;
}

.bas-post__content {
  max-width: 78ch;
}

.bas-post__content :where(img, iframe) {
  height: auto;
  max-width: 100%;
}

.bas-page :where(hr) {
  border: 0;
  border-top: 1px solid var(--bas-rule);
  margin: 1.5rem 0;
}

.bas-page :where(code, pre) {
  font-family: ui-monospace, "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

.bas-page__main > :first-child {
  margin-top: 0;
}

.bas-page--legacy .bas-page__main {
  background: var(--bas-surface);
  box-shadow: 0 1px 2px var(--bas-shadow);
}

.bas-page--historic .bas-page__main {
  overflow-wrap: break-word;
}

.bas-page--historic :where(table) {
  max-width: 100%;
}

.bas-page--historic :where(iframe) {
  max-width: 100%;
}

.bas-page--pages,
.bas-page--pages :where(.wrapper, section) {
  background: var(--bas-bg);
  color: var(--bas-text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}

.bas-page--pages :where(.wrapper) {
  margin: 0 auto;
  max-width: 900px;
  padding: 0;
}

.bas-page--pages :where(.wrapper .wrapper) {
  max-width: none;
  padding: 0;
}

.bas-page--pages :where(section) {
  margin: 0;
  max-width: none;
  padding: 0;
}

.bas-page--pages :where(h1, h2, h3, h4, h5, h6) {
  color: var(--bas-heading);
  font-family: inherit;
  font-weight: 700;
}

.bas-page--pages :where(a) {
  color: var(--bas-link);
  text-shadow: none;
}

.bas-page--pages :where(a:hover, a:focus) {
  color: var(--bas-link-hover);
}

.bas-page--pages :where(ul) {
  list-style-image: none;
}

.bas-page--pages :where(blockquote) {
  border-left-color: var(--bas-accent);
}

.bas-page--pages :where(th, td) {
  border-bottom-color: var(--bas-rule);
}

.bas-page--pages :where(code) {
  background: var(--bas-code-bg);
  color: var(--bas-text);
  text-shadow: none;
}

.bas-page--pages :where(pre) {
  background: var(--bas-pre-bg);
  border-color: var(--bas-rule);
  box-shadow: none;
}

.bas-tool-control {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.bas-tool-control input,
.bas-tool-control button {
  font: inherit;
}

.bas-tool-control input {
  background: var(--bas-control-bg);
  border: 1px solid var(--bas-control-border);
  border-radius: 4px;
  color: var(--bas-control-text);
  padding: 6px 8px;
}

.bas-tool-control button {
  background: var(--bas-button-bg);
  border: 1px solid var(--bas-button-border);
  border-radius: 4px;
  color: var(--bas-button-text);
  padding: 6px 12px;
}

.bas-site-nav__inner {
  align-items: center;
  column-gap: 18px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  margin: 0 auto;
  max-width: 1140px;
  min-height: 52px;
  padding: 8px 16px;
  row-gap: 4px;
}

.bas-site-nav__brand,
.bas-site-nav__links a {
  color: var(--bas-nav-text);
  text-decoration: none;
}

.bas-site-nav__brand {
  font-size: 16px;
  font-weight: 700;
  white-space: nowrap;
}

.bas-site-nav__links {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.bas-site-nav__links a {
  border-bottom: 2px solid transparent;
  display: inline-block;
  font-size: 14px;
  padding: 7px 8px 5px;
}

.bas-site-nav__links a:hover,
.bas-site-nav__links a:focus {
  border-bottom-color: var(--bas-accent);
  color: var(--bas-nav-text);
}

.bas-site-nav__links a[aria-current="page"] {
  border-bottom-color: var(--bas-accent);
  color: var(--bas-nav-current);
}

.bas-site-nav .bas-site-nav__brand,
.bas-site-nav .bas-site-nav__links a {
  color: var(--bas-nav-text);
}

.bas-site-nav .bas-site-nav__links a[aria-current="page"] {
  color: var(--bas-nav-current);
}

.bas-theme-toggle {
  align-items: center;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.36);
  border-radius: 999px;
  color: var(--bas-nav-text);
  cursor: pointer;
  display: inline-flex;
  font: inherit;
  height: 32px;
  justify-content: center;
  line-height: 1;
  padding: 0;
  width: 32px;
}

.bas-theme-toggle:hover,
.bas-theme-toggle:focus {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--bas-accent);
  outline: none;
}

.bas-theme-toggle:focus-visible {
  box-shadow: 0 0 0 3px rgba(242, 184, 75, 0.35);
}

.bas-theme-toggle__icon {
  display: block;
  font-size: 16px;
  transform: translateY(-1px);
}

.bas-page :where(.jumbotron) {
  background: var(--bas-jumbotron-bg);
  color: var(--bas-jumbotron-text);
}

html[data-theme="dark"] body.bas-page .jumbotron img[src="/files/bas_logo.svg"] {
  filter: invert(1) brightness(1.18);
}

@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) body.bas-page .jumbotron img[src="/files/bas_logo.svg"] {
    filter: invert(1) brightness(1.18);
  }
}

@media (max-width: 640px) {
  body.bas-page {
    font-size: 15px;
    line-height: 1.55;
  }

  .bas-page__main {
    padding: 22px 18px 48px;
  }

  .bas-page :where(h1) {
    font-size: 26px;
  }

  .bas-page :where(h2) {
    font-size: 21px;
  }

  .bas-page :where(h3) {
    font-size: 17px;
  }

  .bas-page :where(p, ul, ol, dl, table, blockquote, pre) {
    margin-bottom: 0.85rem;
  }

  .bas-page :where(.jumbotron) {
    padding: 24px 18px;
  }

  body.bas-page .jumbotron img[src="/files/bas_logo.svg"] {
    display: block;
    float: none;
    margin: 0 auto 14px;
    max-width: 160px;
  }

  body.bas-page .jumbotron .col-md-10 {
    clear: both;
  }

  body.bas-page .jumbotron p {
    font-size: 16px;
    line-height: 1.55;
  }

  .bas-site-nav__inner {
    align-items: flex-start;
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-height: 0;
    padding: 7px 14px 6px;
    position: relative;
  }

  .bas-site-nav__brand {
    font-size: 15px;
    white-space: normal;
  }

  .bas-site-nav__links {
    gap: 2px;
  }

  .bas-site-nav__links a {
    font-size: 13px;
    padding: 5px 7px 4px;
  }

  .bas-theme-toggle {
    position: absolute;
    right: 14px;
    top: 7px;
    height: 30px;
    width: 30px;
  }
}