/* =============================================================
   annual-filing.org — Refreshing Summer Fun color system
   Sky blue · Deep ocean · Midnight navy · Crisp mango · Tangerine
   ============================================================= */

:root {
  /* Brand palette */
  --color-sky:        #4cc9f0;
  --color-sky-soft:   #b8e6f6;
  --color-ocean:      #1d7eb0;
  --color-ocean-deep: #0d3b66;
  --color-navy:       #0a2540;
  --color-mango:      #ffc857;
  --color-tangerine:  #ff8c42;
  --color-tangerine-deep: #e85d04;

  /* Neutrals (light, easy on the eyes) */
  --color-bg:         #f4faff;
  --color-bg-alt:     #ffffff;
  --color-bg-elev:    #eaf3fb;
  --color-bg-code:    #f6fbff;
  --color-bg-inline:  #e9f3fb;
  --color-border:     #cbe1f1;
  --color-border-strong: #9bc7e2;
  --color-text:       #112a3f;
  --color-text-mute:  #4d6781;
  --color-text-soft:  #6c8aa6;

  /* Functional */
  --radius-sm: 6px;
  --radius:    12px;
  --radius-lg: 18px;

  --shadow-sm: 0 1px 2px rgba(13, 59, 102, 0.06), 0 1px 3px rgba(13, 59, 102, 0.04);
  --shadow:    0 6px 18px rgba(13, 59, 102, 0.08), 0 2px 6px rgba(13, 59, 102, 0.06);
  --shadow-lg: 0 18px 40px rgba(13, 59, 102, 0.12), 0 4px 12px rgba(13, 59, 102, 0.06);

  --font-body: "Inter", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --font-display: "Inter", "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", "SF Mono", Consolas, Menlo, monospace;

  --header-height: 68px;

  /* Wide desktop content frame */
  --frame-max: 1480px;
  --content-max: 1120px;
  --content-narrow: 760px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-height) + 16px); }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  color: var(--color-text);
  background:
    radial-gradient(1200px 600px at 85% -10%, rgba(76, 201, 240, 0.18), transparent 60%),
    radial-gradient(1000px 500px at -10% 10%, rgba(255, 200, 87, 0.16), transparent 60%),
    var(--color-bg);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img, svg { max-width: 100%; height: auto; }
button { font-family: inherit; cursor: pointer; }

a {
  color: var(--color-ocean);
  text-decoration: none;
  background-image: linear-gradient(to right, var(--color-tangerine), var(--color-tangerine));
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0% 2px;
  transition: background-size 220ms ease, color 180ms ease;
  font-weight: 500;
}
a:hover, a:focus {
  color: var(--color-ocean-deep);
  background-size: 100% 2px;
}

::selection { background: var(--color-mango); color: var(--color-navy); }

/* ---------- Layout shell ---------- */
.frame {
  width: 100%;
  max-width: var(--frame-max);
  margin: 0 auto;
  padding: 0 clamp(16px, 3vw, 36px);
}

main {
  flex: 1 0 auto;
  padding-top: clamp(20px, 3vw, 36px);
  padding-bottom: clamp(40px, 5vw, 80px);
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: saturate(160%) blur(10px);
  -webkit-backdrop-filter: saturate(160%) blur(10px);
  background: rgba(255, 255, 255, 0.78);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}
.site-header .frame {
  height: var(--header-height);
  display: flex;
  align-items: center;
  gap: 18px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--color-navy);
  background: none;
  letter-spacing: -0.01em;
  font-size: 1.05rem;
}
.brand:hover { color: var(--color-ocean-deep); background: none; }
.brand-logo { width: 38px; height: 38px; flex: 0 0 38px; }
.brand-name { white-space: nowrap; }
.brand-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-tangerine-deep);
  margin-left: 6px;
}

.primary-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--color-text);
  font-weight: 600;
  font-size: 0.95rem;
  background: none;
  border: 1px solid transparent;
  transition: background 180ms ease, color 180ms ease, border-color 180ms ease, transform 180ms ease;
}
.nav-link:hover {
  background: var(--color-bg-elev);
  color: var(--color-ocean-deep);
  border-color: var(--color-border);
}
.nav-link[aria-current="page"],
.nav-link.is-active {
  background: linear-gradient(135deg, var(--color-sky-soft), #fff5db);
  color: var(--color-ocean-deep);
  border-color: var(--color-sky);
}
.nav-link .nav-icon { font-size: 1.05rem; line-height: 1; }
.nav-link .nav-label { display: inline; }

.nav-toggle {
  display: none;
  background: var(--color-bg-elev);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  color: var(--color-ocean-deep);
}

@media (max-width: 880px) {
  .nav-toggle { display: inline-flex; margin-left: auto; }
  .primary-nav {
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    margin: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 20px 18px;
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 180ms ease, transform 180ms ease;
  }
  .primary-nav.is-open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
  .nav-link { width: 100%; justify-content: flex-start; padding: 12px 14px; }
  .brand-name { font-size: 0.95rem; }
  .brand-tag { display: none; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: clamp(36px, 5vw, 64px) 0 clamp(28px, 4vw, 56px);
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  gap: clamp(28px, 4vw, 64px);
  align-items: center;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-tangerine-deep);
  background: rgba(255, 200, 87, 0.22);
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 140, 66, 0.35);
}
.hero h1 {
  font-size: clamp(2.1rem, 4.6vw, 3.6rem);
  line-height: 1.08;
  margin: 18px 0 18px;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-ocean) 45%, var(--color-tangerine-deep) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero p.lead {
  font-size: clamp(1.05rem, 1.4vw, 1.2rem);
  color: var(--color-text);
  margin: 0 0 14px;
  max-width: 62ch;
}
.hero p.sub {
  color: var(--color-text-mute);
  max-width: 62ch;
}
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
  align-items: center;
}
.cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 11px 18px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  line-height: 1;
  border: 1px solid var(--color-border);
  background: var(--color-bg-alt);
  color: var(--color-navy);
  box-shadow: var(--shadow-sm);
  transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease, color 180ms ease;
  background-image: none;
  white-space: nowrap;
}
.cta:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: var(--color-border-strong);
  color: var(--color-ocean-deep);
}
.cta .cta-icon {
  width: 26px;
  height: 26px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-sky), var(--color-ocean));
  color: #fff;
  font-size: 0.9rem;
  box-shadow: 0 3px 8px rgba(29, 126, 176, 0.28);
  flex: 0 0 26px;
}
.cta-label {
  letter-spacing: 0.04em;
  font-size: 0.88rem;
  text-transform: uppercase;
}
.cta--mango .cta-icon { background: linear-gradient(135deg, var(--color-mango), var(--color-tangerine)); box-shadow: 0 3px 8px rgba(255, 140, 66, 0.32); }
.cta--ocean .cta-icon  { background: linear-gradient(135deg, var(--color-sky), var(--color-ocean-deep)); }
.cta--tang .cta-icon   { background: linear-gradient(135deg, var(--color-tangerine), var(--color-tangerine-deep)); box-shadow: 0 3px 8px rgba(232, 93, 4, 0.32); }

.cta--primary {
  padding: 13px 22px;
  background: linear-gradient(135deg, var(--color-ocean-deep), var(--color-ocean));
  color: #fff;
  border-color: transparent;
  font-size: 1rem;
  box-shadow: 0 10px 22px rgba(13, 59, 102, 0.25);
}
.cta--primary .cta-label { font-size: 0.95rem; }
.cta--primary:hover { color: #fff; box-shadow: 0 14px 28px rgba(13, 59, 102, 0.32); }
.cta--primary .cta-icon { background: rgba(255, 255, 255, 0.22); color: #fff; box-shadow: none; }

.hero-art {
  position: relative;
  aspect-ratio: 1 / 1;
  width: 100%;
  max-width: 540px;
  margin-left: auto;
}
.hero-art svg { width: 100%; height: 100%; filter: drop-shadow(0 28px 50px rgba(13, 59, 102, 0.22)); }

@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-art { display: none; }
}

/* ---------- Section cards ---------- */
.section-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 22px;
  margin: 26px 0 12px;
}
.section-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease;
  color: var(--color-text);
  background-image: none;
}
.section-card::before {
  content: "";
  position: absolute; inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: linear-gradient(135deg, rgba(76, 201, 240, 0.0), rgba(255, 200, 87, 0.0));
  transition: background 260ms ease;
}
.section-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-sky);
}
.section-card:hover::before {
  background: linear-gradient(135deg, rgba(76, 201, 240, 0.08), rgba(255, 200, 87, 0.10));
}
.section-card .card-icon {
  width: 48px; height: 48px;
  border-radius: 14px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
  background: linear-gradient(135deg, var(--color-sky), var(--color-ocean));
  color: #fff;
  box-shadow: 0 8px 18px rgba(29, 126, 176, 0.25);
}
.section-card:nth-child(2) .card-icon { background: linear-gradient(135deg, var(--color-mango), var(--color-tangerine)); box-shadow: 0 8px 18px rgba(255, 140, 66, 0.28); }
.section-card:nth-child(3) .card-icon { background: linear-gradient(135deg, var(--color-tangerine), var(--color-tangerine-deep)); box-shadow: 0 8px 18px rgba(232, 93, 4, 0.28); }
.section-card h3 {
  margin: 4px 0 0;
  font-size: 1.2rem;
  letter-spacing: -0.01em;
  color: var(--color-navy);
}
.section-card p { margin: 0; color: var(--color-text-mute); }
.section-card .tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ocean);
}
.section-card .arrow {
  margin-top: 10px;
  font-weight: 700;
  color: var(--color-tangerine-deep);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.section-card .arrow .arrow-icon { transition: transform 200ms ease; }
.section-card:hover .arrow .arrow-icon { transform: translateX(4px); }

/* ---------- Section heading ---------- */
.section-heading {
  margin: clamp(36px, 4vw, 56px) 0 12px;
  display: flex;
  align-items: baseline;
  gap: 14px;
}
.section-heading h2 {
  font-size: clamp(1.5rem, 2.4vw, 1.9rem);
  margin: 0;
  color: var(--color-navy);
  letter-spacing: -0.01em;
}
.section-heading p { color: var(--color-text-mute); margin: 0; }

/* ---------- Article (content page) ---------- */
.article-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}
@media (min-width: 1180px) {
  .article-shell {
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 48px;
  }
}

.article {
  max-width: 100%;
  width: 100%;
}
.article-header { margin-bottom: 28px; }
.article-header .eyebrow { margin-bottom: 14px; }
.article-header h1 {
  font-size: clamp(1.8rem, 3.6vw, 2.8rem);
  line-height: 1.12;
  margin: 0 0 12px;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--color-navy), var(--color-ocean) 55%, var(--color-tangerine-deep));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.article .prose {
  /* Take full container width on desktop, but not the full page */
  max-width: 100%;
}
.article .prose > * + * { margin-top: 1.1em; }
.article .prose p {
  font-size: 1.04rem;
  line-height: 1.75;
  color: var(--color-text);
}
.article .prose h2 {
  font-size: clamp(1.35rem, 2vw, 1.7rem);
  color: var(--color-ocean-deep);
  margin-top: 2em;
  margin-bottom: 0.5em;
  letter-spacing: -0.01em;
  position: relative;
  padding-left: 18px;
}
.article .prose h2::before {
  content: "";
  position: absolute;
  left: 0; top: 0.35em; bottom: 0.35em;
  width: 5px;
  border-radius: 4px;
  background: linear-gradient(180deg, var(--color-mango), var(--color-tangerine));
}
.article .prose h3 {
  font-size: 1.18rem;
  color: var(--color-navy);
  margin-top: 1.6em;
}
.article .prose h4 {
  font-size: 1.04rem;
  color: var(--color-ocean);
  margin-top: 1.4em;
}
.article .prose h2 .header-anchor,
.article .prose h3 .header-anchor,
.article .prose h4 .header-anchor {
  opacity: 0;
  margin-left: 10px;
  color: var(--color-tangerine);
  background: none;
  font-weight: 700;
  transition: opacity 180ms ease;
}
.article .prose h2:hover .header-anchor,
.article .prose h3:hover .header-anchor,
.article .prose h4:hover .header-anchor { opacity: 1; }

.article .prose ul, .article .prose ol {
  padding-left: 1.4em;
}
.article .prose li { margin: 0.35em 0; }
.article .prose li::marker { color: var(--color-tangerine); }
.article .prose strong { color: var(--color-navy); }
.article .prose blockquote {
  margin: 1.2em 0;
  padding: 14px 18px;
  border-left: 4px solid var(--color-sky);
  background: var(--color-bg-elev);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--color-text);
}

/* ---------- Inline code & code blocks ---------- */
.article .prose :not(pre) > code,
.prose :not(pre) > code,
code:not([class*="language-"]) {
  font-family: var(--font-mono);
  font-size: 0.92em;
  padding: 1px 6px;
  border-radius: 5px;
  background: var(--color-bg-inline);
  color: var(--color-ocean-deep);
  border: 0;
}

.code-wrap {
  position: relative;
  margin: 1.4em 0;
  border-radius: var(--radius);
  background: var(--color-bg-code);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.code-wrap::before {
  content: attr(data-lang);
  position: absolute;
  top: 8px;
  left: 14px;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-soft);
}
.code-wrap pre {
  margin: 0;
  padding: 36px 16px 16px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  line-height: 1.6;
  background: transparent;
  color: var(--color-text);
}
.code-wrap pre code { background: none; padding: 0; border-radius: 0; color: inherit; font-size: inherit; }
.code-copy {
  position: absolute;
  top: 8px;
  right: 10px;
  z-index: 2;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-ocean-deep);
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 5px 12px;
  transition: background 160ms ease, color 160ms ease, transform 160ms ease, border-color 160ms ease;
}
.code-copy:hover { background: var(--color-ocean-deep); color: #fff; border-color: var(--color-ocean-deep); }
.code-copy.is-copied { background: var(--color-tangerine); color: #fff; border-color: var(--color-tangerine); }

/* Prism token colors tuned to palette */
.token.comment, .token.prolog, .token.doctype, .token.cdata { color: #7e96ad; font-style: italic; }
.token.punctuation { color: #5b7a96; }
.token.namespace { opacity: 0.7; }
.token.keyword, .token.operator, .token.tag, .token.boolean, .token.number {
  color: var(--color-tangerine-deep);
}
.token.string, .token.char, .token.attr-value, .token.regex { color: #117a65; }
.token.function, .token.class-name { color: var(--color-ocean-deep); font-weight: 600; }
.token.builtin, .token.symbol { color: #b5391b; }
.token.property, .token.attr-name { color: var(--color-ocean); }
.token.atrule, .token.variable, .token.constant { color: #8a4baf; }
.token.entity, .token.url, .token.link { color: var(--color-ocean); }
.token.important, .token.bold { font-weight: 700; }

/* ---------- Mermaid ---------- */
pre.mermaid {
  background: linear-gradient(180deg, #ffffff, var(--color-bg-elev));
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  margin: 1.6em 0;
  text-align: center;
  overflow-x: auto;
  box-shadow: var(--shadow-sm);
}

/* ---------- Tables ---------- */
.table-wrap {
  margin: 1.4em 0;
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  background: var(--color-bg-alt);
  -webkit-overflow-scrolling: touch;
}
.table-wrap table {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px;
}
.table-wrap th, .table-wrap td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}
.table-wrap th {
  background: linear-gradient(180deg, var(--color-bg-elev), #ffffff);
  color: var(--color-navy);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  border-bottom: 2px solid var(--color-sky);
}
.table-wrap tr:last-child td { border-bottom: 0; }
.table-wrap tr:hover td { background: rgba(76, 201, 240, 0.06); }

/* ---------- Task list checkboxes ---------- */
.article .prose ul.contains-task-list {
  list-style: none;
  padding-left: 0;
}
.article .prose ul.contains-task-list ul { list-style: revert; padding-left: 1.4em; }
.article .prose ul.contains-task-list ul.contains-task-list { list-style: none; padding-left: 1em; }
.task-list-item {
  position: relative;
  padding: 6px 6px 6px 32px;
  border-radius: var(--radius-sm);
  transition: background 140ms ease;
}
.task-list-item:hover { background: rgba(76, 201, 240, 0.08); }
.task-list-item::marker { content: ""; }
.task-list-item input[type="checkbox"] {
  position: absolute;
  left: 6px;
  top: 12px;
  appearance: none;
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border: 2px solid var(--color-border-strong);
  border-radius: 5px;
  background: #fff;
  cursor: pointer;
  transition: background 140ms ease, border-color 140ms ease;
  margin: 0;
}
.task-list-item input[type="checkbox"]:hover { border-color: var(--color-ocean); }
.task-list-item input[type="checkbox"]:checked {
  background: var(--color-ocean);
  border-color: var(--color-ocean);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='white'%3E%3Cpath d='M6.173 11.5L2.5 7.827l1.06-1.06L6.173 9.38l6.267-6.267 1.06 1.06z'/%3E%3C/svg%3E");
  background-size: 14px 14px;
  background-position: center;
  background-repeat: no-repeat;
}
.task-list-item input[type="checkbox"]:checked ~ * ,
.task-list-item input[type="checkbox"]:checked + label,
.task-list-item.is-checked {
  text-decoration: line-through;
  color: var(--color-text-soft);
}
.task-list-item.is-checked input[type="checkbox"] {
  background: var(--color-ocean);
  border-color: var(--color-ocean);
}

/* ---------- Breadcrumbs ---------- */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  color: var(--color-text-mute);
  padding: 8px 0 22px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 28px;
}
.crumbs a {
  background: none;
  color: var(--color-ocean);
  padding: 3px 8px;
  border-radius: 6px;
  transition: background 160ms ease, color 160ms ease;
}
.crumbs a:hover { background: var(--color-bg-elev); color: var(--color-ocean-deep); }
.crumbs .sep { color: var(--color-text-soft); }
.crumbs .current { color: var(--color-navy); font-weight: 600; }

/* ---------- Related sidebar ---------- */
.related {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: calc(var(--header-height) + 20px);
  align-self: start;
}
.related h2 {
  margin: 0 0 14px;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-tangerine-deep);
}
.related ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 4px; }
.related li a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 10px;
  background: none;
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.95rem;
  line-height: 1.35;
  border: 1px solid transparent;
  transition: background 160ms ease, border-color 160ms ease, color 160ms ease;
}
.related li a:hover { background: var(--color-bg-elev); border-color: var(--color-border); color: var(--color-ocean-deep); }
.related li .ri { flex: 0 0 22px; }
@media (max-width: 1179px) {
  .related { position: static; }
}

/* ---------- FAQ accordions (details) ---------- */
.article .prose details {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0;
  margin: 0.8em 0;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 200ms ease;
}
.article .prose details[open] { box-shadow: var(--shadow); }
.article .prose details > summary {
  list-style: none;
  cursor: pointer;
  padding: 14px 18px 14px 44px;
  font-weight: 600;
  color: var(--color-navy);
  position: relative;
  background: linear-gradient(180deg, #ffffff, var(--color-bg-elev));
}
.article .prose details > summary::-webkit-details-marker { display: none; }
.article .prose details > summary::before {
  content: "";
  position: absolute;
  left: 16px; top: 50%;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-sky), var(--color-ocean));
  transform: translateY(-50%);
  transition: transform 200ms ease;
}
.article .prose details > summary::after {
  content: "+";
  position: absolute;
  left: 16px; top: 50%;
  width: 18px; height: 18px;
  color: #fff;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  transform: translateY(-50%);
  transition: transform 200ms ease;
}
.article .prose details[open] > summary::after { transform: translateY(-50%) rotate(45deg); }
.article .prose details > .faq-body {
  padding: 4px 18px 18px;
}
.article .prose details > *:not(summary) { padding-left: 18px; padding-right: 18px; }
.article .prose details > *:not(summary):first-of-type { padding-top: 10px; }
.article .prose details > *:last-child { padding-bottom: 18px; }

/* ---------- Page sections list / overview ---------- */
.overview {
  margin-top: 32px;
}
.overview .pill-list {
  list-style: none;
  padding: 0;
  margin: 16px 0 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 10px;
}
.overview .pill-list a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 12px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  background-image: none;
  font-weight: 500;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}
.overview .pill-list a:hover {
  border-color: var(--color-sky);
  background: linear-gradient(135deg, rgba(76, 201, 240, 0.08), rgba(255, 200, 87, 0.08));
  transform: translateY(-2px);
}
.overview .pill-list .ic {
  width: 30px; height: 30px;
  border-radius: 8px;
  display: inline-flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--color-sky), var(--color-ocean));
  color: #fff;
  font-size: 0.95rem;
}

/* ---------- Footer ---------- */
.site-footer {
  flex-shrink: 0;
  margin-top: auto;
  background: var(--color-navy);
  color: #cfe2f3;
  padding: 36px 0 22px;
}
.site-footer .frame {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr));
  gap: 28px;
}
.site-footer a { color: #b8e0ff; background: none; }
.site-footer a:hover { color: #fff; }
.footer-brand { display: flex; flex-direction: column; gap: 10px; max-width: 360px; }
.footer-brand .brand-logo { width: 36px; height: 36px; }
.footer-brand p { margin: 0; color: #95b8d7; font-size: 0.95rem; line-height: 1.55; }
.footer-col h4 {
  margin: 0 0 10px;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-mango);
  font-weight: 700;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 6px; }
.footer-col li a { font-size: 0.95rem; }
.footer-meta {
  grid-column: 1 / -1;
  padding-top: 22px;
  margin-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.85rem;
  color: #87a8c6;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px;
}
@media (max-width: 760px) {
  .site-footer .frame { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 460px) {
  .site-footer .frame { grid-template-columns: 1fr; }
}

/* ---------- Skip link (a11y) ---------- */
.skip-link {
  position: absolute;
  top: -100px;
  left: 12px;
  z-index: 999;
  padding: 10px 16px;
  background: var(--color-ocean-deep);
  color: #fff;
  border-radius: 8px;
  font-weight: 700;
  text-decoration: none;
  background-image: none;
  transition: top 180ms ease;
}
.skip-link:focus {
  top: 12px;
  color: #fff;
  outline: 3px solid var(--color-mango);
  outline-offset: 2px;
}

main:focus { outline: none; }

/* ---------- Utility ---------- */
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}