.sentinel-doc-page {
  --sd-bg: #070b11;
  --sd-surface: #121a24;
  --sd-surface-2: #182232;
  --sd-text: #eaf2fc;
  --sd-muted: #acc0d5;
  --sd-line: rgba(170, 199, 228, 0.24);
  --sd-accent: #9fd5ff;
  color: var(--sd-text);
  background:
    radial-gradient(circle at 14% -8%, rgba(84, 135, 179, 0.28), transparent 34%),
    radial-gradient(circle at 88% 12%, rgba(48, 95, 133, 0.35), transparent 36%),
    var(--sd-bg);
}

.sentinel-doc-page .site-header {
  background: rgba(7, 11, 17, 0.86);
  border-bottom-color: rgba(170, 199, 228, 0.24);
}

.sentinel-doc-page .brand-text strong,
.sentinel-doc-page .site-nav a,
.sentinel-doc-page .nav-toggle {
  color: #eaf3fd;
}

.sentinel-doc-page .nav-toggle {
  background: rgba(10, 16, 24, 0.9);
  border-color: rgba(170, 199, 228, 0.45);
}

.sentinel-doc-page .brand-text small,
.sentinel-doc-page .site-nav a {
  opacity: 0.86;
}

.sentinel-doc-page .site-nav a:not(.button):hover,
.sentinel-doc-page .site-nav a:not(.button)[aria-current="page"] {
  border-color: rgba(255, 255, 255, 0.5);
}

.sentinel-doc-page .button.primary {
  background: linear-gradient(145deg, #8acbfa, #6ca9d5);
  color: #061e31;
}

.sentinel-doc-hero {
  position: relative;
  border-bottom: 1px solid rgba(170, 199, 228, 0.28);
}

.sentinel-doc-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(98deg, rgba(7, 11, 17, 0.88), rgba(7, 11, 17, 0.58)),
    url("../img/lifestyle/lifestyle-6.jpg") center / cover no-repeat;
}

.sentinel-doc-hero .container {
  position: relative;
  z-index: 1;
  padding: 7rem 0 3.4rem;
}

.sentinel-doc-hero h1 {
  max-width: 12ch;
  font-size: clamp(2rem, 5vw, 4.5rem);
  line-height: 0.98;
  color: #f3f8ff;
}

.sentinel-doc-sub {
  margin-top: 1.2rem;
  max-width: 72ch;
  color: #c9d9ea;
  line-height: 1.7;
}

.sentinel-doc-meta {
  margin-top: 1.3rem;
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.sentinel-doc-meta span {
  border: 1px solid rgba(187, 217, 244, 0.35);
  border-radius: 999px;
  padding: 0.3rem 0.68rem;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #d4e4f4;
  background: rgba(18, 31, 46, 0.56);
}

.sentinel-doc-main {
  padding: 3.2rem 0 6rem;
}

.sentinel-doc-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 1.1rem;
  align-items: start;
  min-width: 0;
}

.sentinel-doc-toc,
.sentinel-doc-article {
  border: 1px solid var(--sd-line);
  border-radius: 16px;
  background: var(--sd-surface);
  box-shadow: 0 20px 44px rgba(0, 0, 0, 0.24);
}

.sentinel-doc-toc {
  position: sticky;
  top: 96px;
  padding: 1rem;
}

.sentinel-doc-toc h3 {
  margin: 0 0 0.7rem;
  font-size: 0.92rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #d9e8f8;
}

.sentinel-doc-toc a {
  display: block;
  padding: 0.36rem 0;
  color: var(--sd-muted);
  font-size: 0.88rem;
}

.sentinel-doc-toc a:hover {
  color: #f1f7ff;
}

.sentinel-doc-article {
  padding: 1.4rem;
  min-width: 0;
  overflow-x: hidden;
}

.sentinel-doc-article h2,
.sentinel-doc-article h3,
.sentinel-doc-article h4 {
  color: #f0f7ff;
  line-height: 1.2;
}

.sentinel-doc-article h2 {
  margin: 1.5rem 0 0.8rem;
  font-size: clamp(1.35rem, 2.5vw, 2rem);
}

.sentinel-doc-article h3 {
  margin: 1.25rem 0 0.65rem;
  font-size: 1.14rem;
}

.sentinel-doc-article h4 {
  margin: 1rem 0 0.5rem;
  font-size: 1rem;
}

.sentinel-doc-article p,
.sentinel-doc-article li {
  color: #bed1e5;
  line-height: 1.75;
  overflow-wrap: anywhere;
  word-break: normal;
}

.sentinel-doc-article ul,
.sentinel-doc-article ol {
  margin: 0.4rem 0 1rem;
  padding-left: 1.1rem;
}

.sentinel-doc-article code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  color: #dff0ff;
  background: rgba(151, 191, 227, 0.14);
  border: 1px solid rgba(151, 191, 227, 0.22);
  border-radius: 6px;
  padding: 0.1rem 0.38rem;
  font-size: 0.9em;
}

.sentinel-doc-article pre {
  margin: 0.55rem 0 1rem;
  padding: 0.85rem 0.95rem;
  overflow: auto;
  border-radius: 10px;
  border: 1px solid rgba(151, 191, 227, 0.24);
  background: var(--sd-surface-2);
}

.sentinel-doc-article pre code {
  padding: 0;
  border: 0;
  background: transparent;
}

.sentinel-doc-callout {
  border: 1px solid rgba(170, 202, 232, 0.32);
  border-radius: 12px;
  background: rgba(29, 45, 63, 0.55);
  padding: 0.85rem 0.95rem;
  margin: 0.8rem 0 1rem;
}

.sentinel-doc-navlinks {
  margin-top: 1.4rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.sentinel-doc-navlinks a {
  border: 1px solid rgba(173, 205, 234, 0.4);
  border-radius: 999px;
  padding: 0.4rem 0.75rem;
  color: #d8e8f9;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.sentinel-doc-navlinks a:hover {
  background: rgba(141, 185, 223, 0.2);
}

.sentinel-doc-page .footer {
  background: #05080d;
  border-top-color: rgba(170, 199, 228, 0.2);
}

.sentinel-doc-page .footer-text,
.sentinel-doc-page .footer-links {
  color: #adc2d7;
}

@media (max-width: 1050px) {
  .sentinel-doc-layout {
    grid-template-columns: 1fr;
  }

  .sentinel-doc-toc {
    position: static;
  }
}

@media (max-width: 760px) {
  .sentinel-doc-hero .container {
    padding-top: 6rem;
  }

  .sentinel-doc-main {
    padding-top: 2.6rem;
  }

  .sentinel-doc-article p,
  .sentinel-doc-article li {
    line-height: 1.62;
  }

  .sentinel-doc-page .site-nav {
    background: rgba(7, 11, 17, 0.98);
    border-bottom-color: rgba(170, 199, 228, 0.2);
  }
}

@media (max-width: 1024px) {
  .sentinel-doc-page .site-nav {
    background: rgba(7, 11, 17, 0.98);
    border-bottom-color: rgba(170, 199, 228, 0.2);
  }
}

@media (max-width: 520px) {
  .sentinel-doc-article,
  .sentinel-doc-toc {
    padding: 0.95rem;
  }

  .sentinel-doc-toc {
    max-height: 40svh;
    overflow: auto;
  }

  .sentinel-doc-toc a {
    font-size: 0.8rem;
  }

  .sentinel-doc-article {
    font-size: 0.97rem;
  }

  .sentinel-doc-navlinks a {
    width: 100%;
    text-align: center;
  }
}

@media (max-width: 375px) {
  .sentinel-doc-hero h1 {
    font-size: clamp(1.7rem, 8.5vw, 2.2rem);
  }
}

@media (min-width: 768px) and (max-width: 834px) {
  .sentinel-doc-hero .container {
    padding-top: 6.4rem;
  }
}