:root {
  --opennn-navy: #1A4A66;
  --opennn-blue: #1e88e5;
  --opennn-sky: #56A1C8;
  --opennn-ink: #0a1220;
  --opennn-text: #1f2937;
  --opennn-muted: #667085;
  --opennn-line: #d9e3ec;
  --opennn-soft: #f4f8fb;
  --opennn-white: #ffffff;
  --opennn-orange: #ff8f00;
  --opennn-red: #ee4c2c;
  --content-width: 1180px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--opennn-text);
  background: var(--opennn-white);
  font-family: "Outfit", "Inter", "Segoe UI", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  overflow-x: clip;
}

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

a {
  color: var(--opennn-blue);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: #156fc0;
}

.screen-reader-text,
.skip-link:not(:focus) {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(1px, 1px, 1px, 1px);
  white-space: nowrap;
}

.skip-link:focus {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 10000;
  padding: 10px 14px;
  color: var(--opennn-ink);
  background: var(--opennn-white);
  border-radius: 6px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(26, 74, 102, 0.96);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 10px 30px rgba(6, 27, 52, 0.18);
  backdrop-filter: saturate(140%) blur(10px);
}

.site-header-inner {
  width: min(100% - 48px, 1680px);
  min-height: 70px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.site-branding {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
}

.site-logo-link,
.custom-logo-link {
  display: inline-flex;
  align-items: center;
  line-height: 0;
}

.site-logo-link img,
.custom-logo-link img {
  width: auto;
  height: 44px;
  object-fit: contain;
}

.site-navigation {
  display: flex;
  align-items: center;
}

.site-menu,
.footer-menu {
  display: flex;
  align-items: center;
  gap: 30px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-menu a {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  color: var(--opennn-white);
  font-size: 16px;
  font-weight: 800;
  text-decoration: none;
}

.site-menu a:hover {
  color: var(--opennn-sky);
}

.site-menu .menu-github a {
  min-height: 48px;
  padding: 0 22px;
  color: var(--opennn-white);
  background: #56A1C8;
  border-radius: 8px;
}

.site-menu .menu-github a:hover {
  color: var(--opennn-white);
  background: #3D82A6;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 8px;
  background: transparent;
  cursor: pointer;
}

.menu-toggle span:not(.screen-reader-text) {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: var(--opennn-white);
  border-radius: 999px;
}

.site-main {
  min-height: 58vh;
}

.content-wrap {
  width: min(100% - 48px, var(--content-width));
  margin: 0 auto;
}

.cms-page-content {
  overflow: hidden;
}

.cms-page-content > *:first-child {
  margin-top: 0;
}

.archive-hero,
.single-hero {
  color: var(--opennn-white);
  background:
    radial-gradient(circle at 78% 20%, rgba(86, 161, 200, 0.22), transparent 24%),
    linear-gradient(135deg, #1A4A66 0%, #1A4A66 60%, #1A4A66 100%);
}

.archive-hero-inner,
.single-hero-inner {
  width: min(100% - 48px, var(--content-width));
  margin: 0 auto;
  padding: 92px 0 88px;
}

.single-hero-inner {
  padding-top: 80px;
  padding-bottom: 78px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--opennn-sky);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.archive-hero h1,
.single-hero h1 {
  max-width: 1040px;
  margin: 0;
  color: var(--opennn-white);
  font-size: clamp(40px, 6vw, 78px);
  line-height: 1.02;
  font-weight: 900;
  letter-spacing: 0;
}

.single-hero h1 {
  font-size: clamp(34px, 4.2vw, 58px);
}

.archive-hero p:not(.eyebrow),
.single-hero p {
  max-width: 760px;
  margin: 18px 0 0;
  color: rgba(255, 255, 255, 0.86);
  font-size: 20px;
  line-height: 1.5;
}

.back-link {
  display: inline-flex;
  margin-bottom: 18px;
  color: var(--opennn-sky);
  font-size: 16px;
  font-weight: 700;
  text-decoration: none;
}

.back-link:hover {
  color: var(--opennn-white);
}

.archive-list {
  padding: 78px 0 92px;
}

.post-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}

.post-card {
  display: flex;
  min-height: 100%;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--opennn-line);
  border-radius: 8px;
  background: var(--opennn-white);
  box-shadow: 0 18px 40px rgba(6, 27, 52, 0.08);
}

.post-card-media {
  display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--opennn-soft);
}

.post-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.post-card-body {
  display: flex;
  min-height: 100%;
  flex: 1;
  flex-direction: column;
  padding: 26px;
}

.post-card-type {
  margin: 0 0 10px;
  color: var(--opennn-sky);
  font-size: 14px;
  font-weight: 800;
  text-transform: uppercase;
}

.post-card h2 {
  margin: 0 0 14px;
  color: var(--opennn-ink);
  font-size: 24px;
  line-height: 1.16;
  font-weight: 900;
  letter-spacing: 0;
}

.post-card h2 a {
  color: inherit;
  text-decoration: none;
}

.post-card h2 a:hover {
  color: var(--opennn-blue);
}

.post-card p {
  margin: 0 0 22px;
  color: var(--opennn-muted);
  font-size: 16px;
  line-height: 1.55;
}

.text-link {
  margin-top: auto;
  font-size: 17px;
  font-weight: 800;
  text-decoration: none;
}

.tutorials-kpis {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.tutorials-kpis span {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: 8px;
  padding: 0 16px;
  color: rgba(255, 255, 255, 0.88);
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  font-size: 15px;
  font-weight: 800;
}

.tutorials-kpis strong {
  color: var(--opennn-white);
  font-size: 18px;
  font-weight: 900;
}

.tutorials-index {
  padding: 58px 0 96px;
}

.tutorials-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 58px;
}

.tutorials-nav a {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  padding: 0 16px;
  color: var(--opennn-ink);
  background: #eef6fb;
  border: 1px solid #cfe4f2;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 900;
  text-decoration: none;
}

.tutorials-nav a:hover {
  color: var(--opennn-white);
  background: var(--opennn-blue);
  border-color: var(--opennn-blue);
}

.tutorial-section {
  margin-bottom: 74px;
  scroll-margin-top: 96px;
}

.tutorial-section:last-child {
  margin-bottom: 0;
}

.tutorial-section-header {
  display: grid;
  grid-template-columns: minmax(240px, 0.72fr) minmax(280px, 1fr);
  gap: 34px;
  align-items: end;
  margin-bottom: 24px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--opennn-line);
}

.tutorial-section-header h2 {
  margin: 0;
  color: var(--opennn-ink);
  font-size: 38px;
  line-height: 1.08;
  font-weight: 900;
  letter-spacing: 0;
}

.tutorial-section-header p:last-child {
  margin: 0;
  color: var(--opennn-muted);
  font-size: 18px;
  line-height: 1.5;
}

.tutorial-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.tutorial-card {
  min-height: 100%;
  border: 1px solid var(--opennn-line);
  border-radius: 8px;
  background: var(--opennn-white);
  box-shadow: 0 16px 34px rgba(6, 27, 52, 0.07);
}

.tutorial-card a {
  display: grid;
  min-height: 100%;
  grid-template-rows: auto auto 1fr auto;
  gap: 12px;
  padding: 24px;
  color: inherit;
  text-decoration: none;
}

.tutorial-card a:hover .tutorial-card-title {
  color: var(--opennn-blue);
}

.tutorial-card-number {
  width: 42px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--opennn-blue);
  background: #e8f4fc;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 900;
}

.tutorial-card-title {
  color: var(--opennn-ink);
  font-size: 22px;
  line-height: 1.18;
  font-weight: 900;
}

.tutorial-card-summary {
  color: var(--opennn-muted);
  font-size: 15px;
  line-height: 1.52;
}

.tutorial-card-link {
  color: var(--opennn-blue);
  font-size: 15px;
  font-weight: 900;
}

.single-content {
  padding: 64px 0 88px;
}

.single-content > *:first-child {
  margin-top: 0;
}

.single-content h2,
.single-content h3,
.single-content h4 {
  color: #3b86ad;
  line-height: 1.18;
  letter-spacing: 0;
}

.single-content h2 {
  margin-top: 42px;
  margin-bottom: 18px;
  font-size: 34px;
}

.single-content h3 {
  margin-top: 34px;
  margin-bottom: 14px;
  font-size: 26px;
}

.single-content p,
.single-content li {
  font-size: 19px;
  line-height: 1.62;
}

.single-content table {
  width: 100%;
  margin: 28px 0 34px;
  border-collapse: collapse;
  border: 1px solid #b8c0ca;
  font-size: 16px;
  line-height: 1.45;
}

.single-content th,
.single-content td {
  padding: 16px 18px;
  border: 1px solid #b8c0ca;
  text-align: left;
  vertical-align: top;
}

.single-content th {
  color: var(--opennn-white);
  background: #1A4A66;
  font-weight: 900;
}

.single-content tr:nth-child(even) td {
  background: #f6f9fc;
}

.single-content code {
  padding: 0.08em 0.28em;
  color: #0f172a;
  background: #eef2f7;
  border-radius: 4px;
  font-size: 0.9em;
  white-space: normal;
}

.single-content th code {
  padding: 0;
  color: inherit;
  background: transparent;
  border-radius: 0;
  font-size: inherit;
}

.single-content pre {
  overflow-x: auto;
  padding: 20px;
  color: #e5edf6;
  background: #071b34;
  border-radius: 8px;
  font-size: 15px;
  line-height: 1.55;
}

.single-content pre code {
  padding: 0;
  color: inherit;
  background: transparent;
  white-space: pre;
}

.single-content blockquote {
  margin: 32px 0;
  padding: 20px 24px;
  border-left: 4px solid var(--opennn-sky);
  background: var(--opennn-soft);
  color: var(--opennn-ink);
}

.button,
.button-light {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 800;
  text-decoration: none;
}

.button-light {
  margin-top: 24px;
  color: var(--opennn-ink);
  background: var(--opennn-white);
}

.site-footer {
  color: rgba(255, 255, 255, 0.84);
  background: #1A4A66;
}

.site-footer-inner {
  width: min(100% - 48px, var(--content-width));
  margin: 0 auto;
  padding: 56px 0 34px;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 40px;
  align-items: start;
}

.footer-brand p {
  max-width: 440px;
  margin: 18px 0 0;
  font-size: 16px;
}

.footer-menu {
  justify-content: flex-end;
  flex-wrap: wrap;
}

.footer-menu a {
  color: rgba(255, 255, 255, 0.86);
  font-size: 15px;
  font-weight: 800;
  text-decoration: none;
}

.footer-menu a:hover {
  color: var(--opennn-sky);
}

.site-footer-bottom {
  width: min(100% - 48px, var(--content-width));
  margin: 0 auto;
  padding: 18px 0 26px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.62);
  font-size: 14px;
}

.navigation.pagination,
.page-numbers {
  margin-top: 38px;
}

.page-numbers {
  display: flex;
  gap: 8px;
  padding: 0;
  list-style: none;
}

.page-numbers a,
.page-numbers span {
  display: inline-flex;
  min-width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--opennn-line);
  border-radius: 8px;
  color: var(--opennn-ink);
  text-decoration: none;
}

.page-numbers .current {
  color: var(--opennn-white);
  background: var(--opennn-blue);
  border-color: var(--opennn-blue);
}

@media (max-width: 1024px) {
  .site-header-inner {
    width: min(100% - 32px, 1680px);
  }

  .menu-toggle {
    display: inline-block;
  }

  .site-navigation {
    position: absolute;
    top: 70px;
    right: 16px;
    left: 16px;
    display: none;
    padding: 18px;
    background: rgba(26, 74, 102, 0.98);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 8px;
    box-shadow: 0 24px 44px rgba(6, 27, 52, 0.28);
  }

  .site-navigation.is-open {
    display: block;
  }

  .site-menu {
    align-items: stretch;
    flex-direction: column;
    gap: 8px;
  }

  .site-menu a,
  .site-menu .menu-github a {
    width: 100%;
    min-height: 44px;
    justify-content: flex-start;
  }

  .post-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .tutorial-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .tutorial-section-header {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}

@media (max-width: 767px) {
  body {
    font-size: 16px;
  }

  .site-header-inner,
  .content-wrap,
  .archive-hero-inner,
  .single-hero-inner,
  .site-footer-inner,
  .site-footer-bottom {
    width: min(100% - 28px, var(--content-width));
  }

  .site-logo-link img,
  .custom-logo-link img {
    height: 38px;
  }

  .archive-hero-inner,
  .single-hero-inner {
    padding: 62px 0 58px;
  }

  .archive-hero h1,
  .single-hero h1 {
    font-size: 38px;
  }

  .archive-hero p:not(.eyebrow),
  .single-hero p {
    font-size: 17px;
  }

  .archive-list,
  .single-content {
    padding: 46px 0 62px;
  }

  .post-grid,
  .tutorial-grid,
  .site-footer-inner {
    grid-template-columns: 1fr;
  }

  .post-card-body {
    padding: 22px;
  }

  .single-content h2 {
    font-size: 28px;
  }

  .tutorials-index {
    padding: 38px 0 62px;
  }

  .tutorials-nav {
    margin-bottom: 42px;
  }

  .tutorial-section {
    margin-bottom: 52px;
  }

  .tutorial-section-header h2 {
    font-size: 30px;
  }

  .tutorial-card a {
    padding: 22px;
  }

  .single-content h3 {
    font-size: 23px;
  }

  .single-content p,
  .single-content li {
    font-size: 17px;
  }

  .single-content table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }

  .single-content th,
  .single-content td {
    padding: 13px 14px;
  }

  .footer-menu {
    justify-content: flex-start;
    gap: 16px;
  }
}