/* ═══════════════════════════════════════════════════════════════════════════
   DESIGN TOKENS
   ═══════════════════════════════════════════════════════════════════════════ */
:root {
  --color-sky:        #5BC8F5;
  --color-sky-light:  #BDE9FC;
  --color-sky-xlight: #E8F8FF;
  --color-ocean:      #1A7DAF;
  --color-ocean-dark: #135f87;
  --color-navy:       #0D2137;
  --color-navy-mid:   #152d47;
  --color-mango:      #FFB830;
  --color-mango-light:#FFE8B0;
  --color-tangerine:  #FF6B2B;
  --color-tangerine-d:#d9531e;
  --color-bg:         #F8FBFF;
  --color-surface:    #ffffff;
  --color-border:     #d0e8f5;
  --color-text:       #1A2636;
  --color-text-muted: #4a6b85;
  --color-code-bg:    #E8F4FD;

  --font-body:        'Inter', system-ui, -apple-system, sans-serif;
  --font-mono:        'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;

  --header-height:    64px;
  --content-width:    1100px;
  --prose-width:      780px;

  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  14px;
  --radius-xl:  20px;

  --shadow-sm:  0 1px 3px rgba(13,33,55,.08), 0 1px 2px rgba(13,33,55,.04);
  --shadow-md:  0 4px 16px rgba(13,33,55,.12), 0 2px 6px rgba(13,33,55,.06);
  --shadow-lg:  0 8px 32px rgba(13,33,55,.15), 0 4px 12px rgba(13,33,55,.08);
  --shadow-card-hover: 0 12px 40px rgba(26,125,175,.22), 0 4px 16px rgba(13,33,55,.1);

  --transition: 200ms ease;
  --transition-slow: 350ms ease;
}

/* ═══════════════════════════════════════════════════════════════════════════
   RESET & BASE
   ═══════════════════════════════════════════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

main.main-content { flex: 1; }

img, svg { display: block; max-width: 100%; }

a { color: var(--color-ocean); text-decoration-color: var(--color-sky); transition: color var(--transition), text-decoration-color var(--transition); }
a:hover { color: var(--color-ocean-dark); text-decoration-color: var(--color-ocean); }
a:focus-visible { outline: 2px solid var(--color-sky); outline-offset: 2px; border-radius: 2px; }

/* ═══════════════════════════════════════════════════════════════════════════
   LAYOUT UTILITIES
   ═══════════════════════════════════════════════════════════════════════════ */
.page-wrapper {
  width: 100%;
  max-width: var(--content-width);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2.5rem);
  padding-block: clamp(1.5rem, 4vw, 3rem);
}

/* Anchor offset for sticky header */
h1, h2, h3, h4, h5, h6 { scroll-margin-top: calc(var(--header-height) + 1rem); }

/* ═══════════════════════════════════════════════════════════════════════════
   TYPOGRAPHY
   ═══════════════════════════════════════════════════════════════════════════ */
.content-prose h1,
.content-prose h2,
.content-prose h3,
.content-prose h4 {
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.015em;
}

.content-prose h1 {
  font-size: clamp(1.75rem, 4vw, 2.6rem);
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 3px solid var(--color-sky-light);
}

/* Apply gradient to the anchor child that headerLink generates */
.content-prose h1 > a.header-anchor,
.content-prose h1 > a.header-anchor > span {
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-ocean) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.content-prose h1 > a.header-anchor::after {
  -webkit-text-fill-color: var(--color-sky);
  background: none;
  -webkit-background-clip: unset;
  background-clip: unset;
}

.content-prose h2 {
  font-size: clamp(1.3rem, 2.8vw, 1.75rem);
  color: var(--color-ocean);
  margin-top: 2.5rem;
  margin-bottom: 0.875rem;
  padding-left: 0.75rem;
  border-left: 4px solid var(--color-mango);
}

.content-prose h3 {
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  color: var(--color-navy);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  padding-left: 0.5rem;
  border-left: 3px solid var(--color-sky);
}

.content-prose h4 {
  font-size: 1.05rem;
  color: var(--color-ocean);
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.content-prose p { margin-bottom: 1.125rem; }

/* ── Lists ──────────────────────────────────────────────────────────────── */
.content-prose ul {
  padding-left: 0;
  margin-bottom: 1.25rem;
  list-style: none;
}

.content-prose ul li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.5rem;
  line-height: 1.7;
}

.content-prose ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-sky);
  flex-shrink: 0;
}

/* Nested ul — slightly smaller dot, muted colour */
.content-prose ul ul li::before {
  width: 5px;
  height: 5px;
  background: none;
  border: 2px solid var(--color-ocean);
  top: 0.65em;
}

.content-prose ol {
  padding-left: 1.75rem;
  margin-bottom: 1.25rem;
  counter-reset: none;
}

.content-prose ol li {
  margin-bottom: 0.5rem;
  line-height: 1.7;
  padding-left: 0.25rem;
}

.content-prose ol li::marker {
  color: var(--color-ocean);
  font-weight: 600;
  font-size: 0.95em;
}

/* Nested lists */
.content-prose li > ul,
.content-prose li > ol { margin-top: 0.5rem; margin-bottom: 0.25rem; padding-left: 1rem; }

.content-prose strong { color: var(--color-navy); font-weight: 600; }
.content-prose em { font-style: italic; }

/* ── Heading anchor links (from markdown-it-anchor headerLink mode) ──────
   headerLink wraps the ENTIRE heading text in <a class="header-anchor">.
   Keep text always visible; only show a trailing # symbol on hover.      */
.content-prose .header-anchor {
  color: inherit;
  text-decoration: none;
  -webkit-text-fill-color: inherit; /* let gradient headings work */
}

.content-prose .header-anchor::after {
  content: ' ¶';
  opacity: 0;
  font-size: 0.6em;
  font-weight: 400;
  letter-spacing: 0;
  color: var(--color-sky);
  -webkit-text-fill-color: var(--color-sky);
  transition: opacity var(--transition);
  vertical-align: middle;
}

.content-prose h1:hover .header-anchor::after,
.content-prose h2:hover .header-anchor::after,
.content-prose h3:hover .header-anchor::after,
.content-prose h4:hover .header-anchor::after { opacity: 0.65; }

/* ═══════════════════════════════════════════════════════════════════════════
   INLINE CODE
   ═══════════════════════════════════════════════════════════════════════════ */
.content-prose :not(pre) > code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: rgba(91, 200, 245, 0.12);
  color: inherit;
  padding: 0.1em 0.35em;
  border-radius: 3px;
  white-space: nowrap;
  font-weight: 400;
}

/* Keep table cell code readable */
.content-prose td code,
.content-prose th code {
  font-size: 0.8em;
  background: rgba(91, 200, 245, 0.15);
}

/* ═══════════════════════════════════════════════════════════════════════════
   CODE BLOCKS
   ═══════════════════════════════════════════════════════════════════════════ */
.content-prose pre {
  position: relative;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  margin-bottom: 1.5rem;
  max-width: 100%;
}

.content-prose pre code {
  display: block;
  overflow-x: auto;
  padding: 1.25rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.65;
  tab-size: 4;
}

/* Copy button — injected by copy-button.js */
.copy-btn {
  position: absolute;
  top: 0.6rem;
  right: 0.6rem;
  background: rgba(255,255,255,0.9);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.25rem 0.6rem;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition);
  line-height: 1.6;
  z-index: 2;
}
.copy-btn:hover { background: var(--color-sky-light); color: var(--color-ocean); border-color: var(--color-sky); }
.copy-btn--copied { background: #e8fdf0; color: #1a7a45; border-color: #6ee0a4; }

/* ═══════════════════════════════════════════════════════════════════════════
   TABLES
   ═══════════════════════════════════════════════════════════════════════════ */
.table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-bottom: 1.5rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.content-prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  min-width: 480px;
}

.content-prose table thead {
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-mid) 100%);
  color: #fff;
}

.content-prose table th {
  padding: 0.75rem 1rem;
  font-weight: 600;
  text-align: left;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.content-prose table td {
  padding: 0.65rem 1rem;
  border-top: 1px solid var(--color-border);
  vertical-align: top;
}

.content-prose table tbody tr:nth-child(even) { background: var(--color-sky-xlight); }
.content-prose table tbody tr:hover { background: var(--color-sky-light); }

/* ═══════════════════════════════════════════════════════════════════════════
   CHECKBOXES (markdown-it-task-lists)
   ═══════════════════════════════════════════════════════════════════════════ */
.content-prose .task-list-item {
  list-style: none;
  margin-left: -1.5rem;
  padding-left: 2.1rem;
  position: relative;
}

.content-prose .task-list-item input[type="checkbox"] {
  position: absolute;
  left: 0;
  top: 0.3em;
  width: 1.1em;
  height: 1.1em;
  appearance: none;
  -webkit-appearance: none;
  border: 2px solid var(--color-ocean);
  border-radius: 3px;
  background: white;
  cursor: pointer;
  transition: all var(--transition);
  flex-shrink: 0;
}

.content-prose .task-list-item input[type="checkbox"]:checked {
  background: var(--color-ocean);
  border-color: var(--color-ocean);
}

.content-prose .task-list-item input[type="checkbox"]:checked::after {
  content: '';
  position: absolute;
  left: 2px;
  top: -1px;
  width: 7px;
  height: 11px;
  border: 2px solid white;
  border-top: none;
  border-left: none;
  transform: rotate(45deg);
}

.content-prose .task-list-item input[type="checkbox"]:checked + label,
.content-prose .task-list-item input[type="checkbox"]:checked ~ span {
  text-decoration: line-through;
  color: var(--color-text-muted);
}

.content-prose .task-list-item label { cursor: pointer; }
.content-prose .task-list-item input[type="checkbox"]:focus-visible { outline: 2px solid var(--color-sky); outline-offset: 2px; }

/* ═══════════════════════════════════════════════════════════════════════════
   FAQ / ACCORDION (<details>/<summary>)
   ═══════════════════════════════════════════════════════════════════════════ */
.faq-item,
.content-prose details {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 0.75rem;
  overflow: hidden;
  background: var(--color-surface);
  transition: box-shadow var(--transition);
}

.faq-item:hover,
.content-prose details:hover { box-shadow: var(--shadow-sm); }

.faq-question,
.content-prose summary {
  padding: 0.875rem 1.25rem;
  font-weight: 600;
  color: var(--color-navy);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  list-style: none;
  user-select: none;
  transition: background var(--transition), color var(--transition);
}

.faq-question::-webkit-details-marker,
.content-prose summary::-webkit-details-marker { display: none; }

.faq-question::after,
.content-prose summary::after {
  content: '›';
  font-size: 1.3em;
  color: var(--color-ocean);
  transform: rotate(90deg);
  transition: transform var(--transition-slow);
  flex-shrink: 0;
}

.faq-item[open] > .faq-question::after,
.content-prose details[open] > summary::after { transform: rotate(270deg); }

.faq-item[open],
.content-prose details[open] { box-shadow: var(--shadow-md); }

.faq-item[open] > .faq-question,
.content-prose details[open] > summary {
  background: var(--color-sky-xlight);
  color: var(--color-ocean);
  border-bottom: 1px solid var(--color-border);
}

.faq-answer,
.content-prose details > *:not(summary) {
  padding: 1rem 1.25rem;
  line-height: 1.7;
}

/* ═══════════════════════════════════════════════════════════════════════════
   MERMAID DIAGRAMS
   ═══════════════════════════════════════════════════════════════════════════ */
.content-prose .mermaid {
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  padding: 1.5rem;
  background: var(--color-surface);
  margin: 1.5rem 0;
  overflow-x: auto;
  text-align: center;
}

/* ═══════════════════════════════════════════════════════════════════════════
   HEADER
   ═══════════════════════════════════════════════════════════════════════════ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 33, 55, 0.97);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(91, 200, 245, 0.2);
  height: var(--header-height);
  box-shadow: 0 2px 20px rgba(0,0,0,0.25);
}

.header-inner {
  max-width: var(--content-width);
  margin-inline: auto;
  padding-inline: clamp(1rem, 3vw, 2rem);
  height: 100%;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  flex-shrink: 0;
  color: #fff;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  transition: opacity var(--transition);
}
.site-logo:hover { opacity: 0.9; color: #fff; text-decoration: none; }

.logo-svg { width: 36px; height: 36px; flex-shrink: 0; }
.logo-text { white-space: nowrap; }

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-left: auto;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255,255,255,0.78);
  text-decoration: none;
  transition: all var(--transition);
  white-space: nowrap;
}
.nav-link:hover { background: rgba(91,200,245,0.15); color: var(--color-sky); }
.nav-link--active { background: rgba(91,200,245,0.2); color: var(--color-sky); }
.nav-link svg { flex-shrink: 0; opacity: 0.8; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  margin-left: auto;
  border-radius: var(--radius-sm);
}
.hamburger__bar {
  width: 22px;
  height: 2px;
  background: rgba(255,255,255,0.85);
  border-radius: 2px;
  transition: all var(--transition-slow);
  display: block;
}
.hamburger[aria-expanded="true"] .hamburger__bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger[aria-expanded="true"] .hamburger__bar:nth-child(2) { opacity: 0; }
.hamburger[aria-expanded="true"] .hamburger__bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  display: none;
  background: var(--color-navy-mid);
  border-top: 1px solid rgba(91,200,245,0.15);
}
.mobile-menu.is-open { display: block; }

.mobile-nav {
  max-width: var(--content-width);
  margin-inline: auto;
  padding: 0.5rem clamp(1rem, 3vw, 2rem) 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.mobile-nav__link {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 500;
  color: rgba(255,255,255,0.8);
  text-decoration: none;
  transition: all var(--transition);
}
.mobile-nav__link:hover { background: rgba(91,200,245,0.15); color: var(--color-sky); }
.mobile-nav__link--active { background: rgba(91,200,245,0.2); color: var(--color-sky); }

/* ═══════════════════════════════════════════════════════════════════════════
   BREADCRUMBS
   ═══════════════════════════════════════════════════════════════════════════ */
.breadcrumbs {
  margin-bottom: 1.5rem;
  padding-bottom: 0.875rem;
  border-bottom: 1px solid var(--color-border);
}

.breadcrumbs__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.1rem;
  font-size: 0.85rem;
}

.breadcrumbs__item { display: flex; align-items: center; }
.breadcrumbs__link { color: var(--color-ocean); text-decoration: none; font-weight: 500; }
.breadcrumbs__link:hover { text-decoration: underline; }
.breadcrumbs__sep { color: var(--color-text-muted); margin-inline: 0.3rem; font-size: 1.1em; }
.breadcrumbs__item--current { color: var(--color-text-muted); font-weight: 500; }

/* ═══════════════════════════════════════════════════════════════════════════
   CHILD PAGE CARDS
   ═══════════════════════════════════════════════════════════════════════════ */
.child-cards { margin-top: 3rem; }
.child-cards__heading {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 1.25rem;
  padding-left: 0.75rem;
  border-left: 4px solid var(--color-mango);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.1rem 1.25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: var(--color-text);
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
}
.card:hover {
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-sky);
  transform: translateY(-2px);
  color: var(--color-text);
}

.card__icon { color: var(--color-ocean); flex-shrink: 0; }
.card__body { flex: 1; min-width: 0; }
.card__title { font-size: 0.95rem; font-weight: 600; color: var(--color-navy); line-height: 1.35; margin: 0; }
.card:hover .card__title { color: var(--color-ocean); }
.card__arrow { color: var(--color-sky); font-size: 1.1rem; flex-shrink: 0; transition: transform var(--transition); }
.card:hover .card__arrow { transform: translateX(3px); }

.cards-grid--articles .card--article .card__icon { color: var(--color-tangerine); }

/* ═══════════════════════════════════════════════════════════════════════════
   RELATED LINKS
   ═══════════════════════════════════════════════════════════════════════════ */
.related-links {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 2px solid var(--color-sky-light);
}

.related-links__heading {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 0.875rem;
}

.related-links__list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.related-links__link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.9rem;
  background: var(--color-sky-xlight);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-ocean);
  text-decoration: none;
  transition: all var(--transition);
}
.related-links__link:hover {
  background: var(--color-sky-light);
  border-color: var(--color-sky);
  color: var(--color-ocean-dark);
}

/* ═══════════════════════════════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════════════════════════════ */
.site-footer {
  background: var(--color-navy);
  color: rgba(255,255,255,0.75);
  margin-top: auto;
}

.footer-inner {
  max-width: var(--content-width);
  margin-inline: auto;
  padding: clamp(2rem, 5vw, 3.5rem) clamp(1rem, 3vw, 2rem);
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 3rem;
  align-items: start;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: #fff;
  font-weight: 700;
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
  transition: opacity var(--transition);
}
.footer-logo:hover { opacity: 0.85; color: #fff; }

.footer-tagline {
  font-size: 0.875rem;
  line-height: 1.6;
  color: rgba(255,255,255,0.55);
  max-width: 280px;
}

.footer-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.footer-nav__heading {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-sky);
  margin-bottom: 0.75rem;
}

.footer-nav__list { list-style: none; }
.footer-nav__list li { margin-bottom: 0.4rem; }
.footer-nav__list a {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.65);
  text-decoration: none;
  transition: color var(--transition);
}
.footer-nav__list a:hover { color: var(--color-sky); }

.footer-bottom {
  background: rgba(0,0,0,0.25);
  text-align: center;
  padding: 0.875rem;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.45);
}

/* ═══════════════════════════════════════════════════════════════════════════
   HOMEPAGE
   ═══════════════════════════════════════════════════════════════════════════ */
.home-page { overflow-x: hidden; }

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--color-navy) 0%, #0a1928 40%, var(--color-navy-mid) 100%);
  color: white;
  padding: clamp(3rem, 8vw, 6rem) clamp(1rem, 4vw, 2.5rem);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 70% 50%, rgba(91,200,245,0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 20% 80%, rgba(255,184,48,0.06) 0%, transparent 50%);
  pointer-events: none;
}

.hero__inner {
  max-width: var(--content-width);
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
  position: relative;
}

.hero__content { min-width: 0; }

.hero__title {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.025em;
  margin-bottom: 1.25rem;
}

.hero__title-line1 {
  display: block;
  background: linear-gradient(90deg, #fff 0%, var(--color-sky) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__title-line2 {
  display: block;
  font-size: 0.65em;
  color: rgba(255,255,255,0.7);
  -webkit-text-fill-color: rgba(255,255,255,0.7);
  margin-top: 0.2em;
}

.hero__tagline {
  font-size: clamp(0.95rem, 1.8vw, 1.15rem);
  color: rgba(255,255,255,0.72);
  margin-bottom: 2rem;
  line-height: 1.65;
  max-width: 580px;
}

.hero__ctas { display: flex; gap: 1rem; flex-wrap: wrap; }

.hero__visual { flex-shrink: 0; }
.hero__satellite { width: clamp(140px, 18vw, 220px); height: auto; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-sky) 0%, var(--color-ocean) 100%);
  color: white;
  box-shadow: 0 4px 14px rgba(26,125,175,0.4);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(26,125,175,0.5);
  color: white;
}

.btn--secondary {
  background: rgba(255,255,255,0.1);
  color: white;
  border: 1px solid rgba(255,255,255,0.25);
}
.btn--secondary:hover {
  background: rgba(255,255,255,0.18);
  border-color: rgba(255,255,255,0.45);
  color: white;
  transform: translateY(-2px);
}

/* About section */
.home-about {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.home-about__lead {
  font-size: 1.05rem;
  color: var(--color-text);
  line-height: 1.75;
  margin-bottom: 1rem;
  max-width: 820px;
}

.home-about p { max-width: 820px; margin-bottom: 1rem; }
.home-about code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-code-bg);
  color: var(--color-ocean-dark);
  border: 1px solid var(--color-border);
  padding: 0.1em 0.4em;
  border-radius: 3px;
}

/* Sections grid */
.home-sections { padding-block: clamp(2rem, 5vw, 4rem); }

.home-sections__heading {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 2rem;
}

.section-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1.5rem;
}

.section-card {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  padding: 2rem;
  border-radius: var(--radius-xl);
  text-decoration: none;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-slow);
  position: relative;
  overflow: hidden;
}
.section-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
}
.section-card--blue::before { background: linear-gradient(90deg, var(--color-sky) 0%, var(--color-ocean) 100%); }
.section-card--orange::before { background: linear-gradient(90deg, var(--color-mango) 0%, var(--color-tangerine) 100%); }

.section-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
  border-color: var(--color-sky);
}

.section-card__icon { margin-bottom: 0.25rem; }
.section-card--blue .section-card__icon { color: var(--color-ocean); }
.section-card--orange .section-card__icon { color: var(--color-tangerine); }

.section-card__title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-navy);
  line-height: 1.3;
  margin: 0;
}
.section-card:hover .section-card__title { color: var(--color-ocean); }

.section-card__desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin: 0;
}

.section-card__topics {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  flex: 1;
}

.section-card__topics li {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  padding-left: 1.1rem;
  position: relative;
}
.section-card__topics li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--color-sky);
  font-weight: 700;
}
.section-card--orange .section-card__topics li::before { color: var(--color-tangerine); }

.section-card__cta {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-ocean);
  transition: all var(--transition);
  margin-top: 0.5rem;
}
.section-card--orange .section-card__cta { color: var(--color-tangerine); }
.section-card:hover .section-card__cta { letter-spacing: 0.02em; }

/* Featured articles */
.featured-articles {
  background: var(--color-sky-xlight);
  padding-block: clamp(2rem, 5vw, 4rem);
  border-top: 1px solid var(--color-border);
}

.featured-articles__heading {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 1.75rem;
}

.featured-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}

.featured-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: var(--color-text);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}
.featured-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-sky);
  transform: translateY(-2px);
}

.featured-card__tag {
  display: inline-flex;
  align-self: flex-start;
  padding: 0.2rem 0.6rem;
  background: var(--color-sky-light);
  color: var(--color-ocean-dark);
  border-radius: var(--radius-xl);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.featured-card__title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-navy);
  line-height: 1.4;
  margin: 0;
}
.featured-card:hover .featured-card__title { color: var(--color-ocean); }

/* ═══════════════════════════════════════════════════════════════════════════
   ARTICLE-SPECIFIC ADDITIONS
   ═══════════════════════════════════════════════════════════════════════════ */
.article-content { padding-top: 0.5rem; }

/* ═══════════════════════════════════════════════════════════════════════════
   ROBOTS.TXT / SKIP LINKS
   ═══════════════════════════════════════════════════════════════════════════ */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--color-navy);
  color: white;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  text-decoration: none;
  font-weight: 600;
  z-index: 9999;
  transition: top var(--transition);
}
.skip-link:focus { top: 0; }

/* ═══════════════════════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .footer-inner { grid-template-columns: 1fr; gap: 2rem; }
  .footer-nav { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .site-nav { display: none; }
  .hamburger { display: flex; }
  .site-header { height: auto; min-height: var(--header-height); }
  .header-inner { flex-wrap: wrap; padding-block: 0.75rem; }

  .hero__inner { grid-template-columns: 1fr; }
  .hero__visual { display: none; }

  .section-cards { grid-template-columns: 1fr; }

  .footer-nav { grid-template-columns: 1fr; gap: 1.5rem; }

  .cards-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .hero__ctas { flex-direction: column; }
  .btn { justify-content: center; }
  .featured-grid { grid-template-columns: 1fr; }
  .breadcrumbs__list { font-size: 0.8rem; }
}

@media (min-width: 1280px) {
  .cards-grid { grid-template-columns: repeat(3, 1fr); }
}