:root {
  --primary: #be185d;
  --secondary: #9d174d;
  --accent: #0891b2;
  --bg: #ffffff;
  --surface: #fdf2f8;
  --surface-alt: #fce7f3;
  --text: #831843;
  --muted: #5f6e7d;
  --border: #fbcfe8;
  --row-alt: #fdf2f8;
  --radius: 12px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 20px;
}

/* --- Header --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  box-shadow: 0 2px 10px rgba(157, 23, 77, 0.15);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  padding-bottom: 12px;
  flex-wrap: wrap;
  gap: 12px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.3px;
}
.brand img { display: block; width: 40px; height: 40px; }
.brand span { font-size: 1.1rem; }

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
}
.nav a {
  color: #fff;
  text-decoration: none;
  font-size: 0.95rem;
  padding: 6px 10px;
  border-radius: 8px;
  transition: background 0.15s ease;
}
.nav a:hover { background: rgba(255,255,255,0.18); }

/* --- Hero --- */
.hero {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  padding: 56px 0 48px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  right: -80px; top: -80px;
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(255,255,255,0.14), transparent 70%);
  border-radius: 50%;
}
.hero h1 {
  font-size: 2.1rem;
  line-height: 1.2;
  margin: 0 0 16px 0;
  color: #fff;
}
.hero .byline {
  color: rgba(255,255,255,0.9);
  font-size: 0.92rem;
  margin: 0 0 12px 0;
}
.hero .intro p {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.95);
  margin: 8px 0;
  max-width: 700px;
}
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.98rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 14px rgba(8, 145, 178, 0.35);
}
.btn-secondary {
  background: #fff;
  color: var(--primary);
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 6px 18px rgba(0,0,0,0.18); }

/* --- Main content --- */
main {
  padding: 32px 0 48px;
}
main h2 {
  font-size: 1.55rem;
  color: var(--secondary);
  margin: 40px 0 14px;
  padding: 10px 14px 10px 18px;
  border-left: 5px solid var(--primary);
  background: var(--surface);
  border-radius: 0 var(--radius) var(--radius) 0;
  scroll-margin-top: 88px;
}
main h3 {
  color: var(--secondary);
  margin-top: 24px;
  font-size: 1.2rem;
}
main p { margin: 0.75em 0; }

main a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}
main a:hover { color: var(--primary); }

/* --- Lists --- */
main ul {
  list-style: none;
  padding-left: 0;
}
main ul li {
  position: relative;
  padding: 6px 0 6px 26px;
}
main ul li::before {
  content: "\27A4";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}
main ol {
  counter-reset: n;
  list-style: none;
  padding-left: 0;
}
main ol > li {
  counter-increment: n;
  position: relative;
  padding: 8px 0 8px 46px;
  margin-bottom: 6px;
}
main ol > li::before {
  content: counter(n);
  position: absolute;
  left: 0; top: 6px;
  width: 32px; height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.95rem;
}

/* --- ToC --- */
nav.toc {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 22px;
  margin: 22px 0;
}
nav.toc h2, nav.toc strong {
  font-size: 1.05rem;
  color: var(--secondary);
  margin: 0 0 8px 0;
  display: block;
  background: none;
  border: none;
  padding: 0;
}
nav.toc ol {
  margin: 6px 0 0 0;
  padding-left: 0;
}
nav.toc ol > li {
  padding: 3px 0 3px 30px;
  margin: 0;
}
nav.toc ol > li::before {
  width: 22px; height: 22px;
  font-size: 0.75rem;
  top: 4px;
}
nav.toc a {
  color: var(--text);
  text-decoration: none;
}
nav.toc a:hover { color: var(--primary); text-decoration: underline; }

/* --- Tables --- */
.table-wrap {
  overflow-x: auto;
  margin: 18px 0;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}
table {
  width: 100%;
  border-collapse: collapse;
  min-width: 500px;
  background: var(--bg);
}
th, td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
thead th {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  font-weight: 600;
}
tbody tr:nth-child(even) { background: var(--row-alt); }

/* --- FAQ accordion --- */
details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 18px;
  margin: 10px 0;
  transition: box-shadow 0.15s ease;
}
details[open] {
  box-shadow: 0 3px 12px rgba(190, 24, 93, 0.12);
  background: var(--bg);
  border-color: var(--primary);
}
details summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--secondary);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
details summary::-webkit-details-marker { display: none; }
details summary::after {
  content: "\25BC";
  color: var(--accent);
  font-size: 0.85rem;
  transition: transform 0.2s ease;
}
details[open] summary::after { transform: rotate(180deg); }
details p { margin: 10px 0 0 0; }

/* --- Author box --- */
aside.author-box {
  display: flex;
  gap: 18px;
  align-items: center;
  background: linear-gradient(135deg, var(--surface), var(--surface-alt));
  border: 1px solid var(--border);
  border-left: 5px solid var(--accent);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin: 30px 0;
}
aside.author-box img {
  border-radius: 50%;
  border: 3px solid var(--bg);
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  flex-shrink: 0;
}
aside.author-box .author-name {
  font-weight: 700;
  color: var(--secondary);
  font-size: 1.05rem;
  margin: 0;
}
aside.author-box .author-role {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 2px 0 8px 0;
}
aside.author-box .author-bio {
  font-size: 0.94rem;
  margin: 0;
  color: var(--text);
}

/* --- In-content figures --- */
figure {
  margin: 24px 0;
  text-align: center;
}
figure svg {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 10px;
}
figcaption {
  font-size: 0.88rem;
  color: var(--muted);
  margin-top: 8px;
}

/* --- Byline (non-hero) --- */
.byline {
  color: var(--muted);
  font-size: 0.92rem;
  margin: 0 0 12px 0;
}

/* --- Callout --- */
.callout {
  background: var(--surface-alt);
  border-left: 5px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 14px 18px;
  margin: 18px 0;
}

/* --- Footer --- */
.site-footer {
  background: linear-gradient(135deg, var(--secondary), var(--primary));
  color: #fff;
  padding: 30px 0 20px;
  margin-top: 40px;
}
.site-footer a { color: #fff; text-decoration: underline; }
.site-footer .footer-cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-bottom: 20px;
}
.site-footer h3 { margin: 0 0 8px 0; font-size: 1rem; color: #fff; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer ul li { padding: 3px 0; }
.site-footer ul li::before { content: none; }
.site-footer .copyright {
  border-top: 1px solid rgba(255,255,255,0.25);
  padding-top: 14px;
  font-size: 0.88rem;
  opacity: 0.92;
}

@media (min-width: 700px) {
  .hero h1 { font-size: 2.5rem; }
  .site-footer .footer-cols { grid-template-columns: repeat(3, 1fr); }
  main h2 { font-size: 1.7rem; }
}
@media (min-width: 980px) {
  .hero { padding: 72px 0 60px; }
  .hero h1 { font-size: 2.8rem; }
}

/* a11y additions */
.skip-link{position:absolute;left:-9999px;top:0;background:var(--primary);color:#fff;padding:10px 16px;border-radius:4px;z-index:1000;text-decoration:none;font-weight:700}
.skip-link:focus{left:12px;top:12px}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
@media (prefers-reduced-motion: reduce){*,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important}}