:root {
  --bg: #08111f;
  --panel: rgba(12, 24, 43, 0.88);
  --panel-strong: rgba(15, 30, 53, 0.96);
  --line: rgba(255, 255, 255, 0.1);
  --text: #f7f5ef;
  --muted: #b7c1d3;
  --gold: #f4b544;
  --blue: #59d5ff;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.35);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Helvetica Neue", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top right, rgba(255, 95, 69, 0.14), transparent 22%),
    radial-gradient(circle at left 12%, rgba(89, 213, 255, 0.18), transparent 18%),
    linear-gradient(180deg, #08111f 0%, #091427 55%, #060d17 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.55), transparent 92%);
}

.page-shell {
  width: min(1280px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 72px;
}

.page-topbar,
.hero-card,
.sidebar-card,
.content-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.page-topbar {
  position: sticky;
  top: 12px;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  margin-bottom: 18px;
}

.brand,
.top-links a {
  color: var(--text);
  text-decoration: none;
}

.brand {
  font-family: "Trebuchet MS", "Segoe UI Variable Display", sans-serif;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.top-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.top-links a {
  color: var(--muted);
  font-size: 0.95rem;
}

.topbar-cta {
  flex-shrink: 0;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  padding: 0 4px 14px;
  color: var(--muted);
  font-size: 0.92rem;
}

.breadcrumbs a {
  color: var(--muted);
  text-decoration: none;
}

.breadcrumbs span {
  opacity: 0.7;
}

.hero-card {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
  gap: 28px;
  padding: 28px;
}

.hero-copy h1,
.content-card h2,
.sidebar-card h2 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  line-height: 1.05;
}

.hero-copy h1 {
  font-size: clamp(2.4rem, 5vw, 4.5rem);
  max-width: 12ch;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--gold);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.lead,
.content-card p,
.sidebar-card p,
.sidebar-card li,
.content-card li,
.author-role {
  color: var(--muted);
  line-height: 1.75;
}

.cta-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 800;
  letter-spacing: 0.01em;
  transition: transform 220ms ease, box-shadow 220ms ease;
}

.cta-link:hover {
  transform: translateY(-2px);
}

.cta-link-primary {
  color: #1b1207;
  background: linear-gradient(135deg, #ffcc73, #f4b544 45%, #ff8d4d 100%);
  box-shadow: 0 16px 34px rgba(244, 181, 68, 0.24);
}

.cta-link-secondary {
  color: var(--text);
  border: 1px solid rgba(89, 213, 255, 0.34);
  background: rgba(89, 213, 255, 0.08);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 22px 0 0;
}

.hero-media img,
.author-box img {
  width: 100%;
  display: block;
  object-fit: cover;
  border-radius: 20px;
}

.hero-media img {
  aspect-ratio: 4 / 3;
}

.hero-points,
.fact-list {
  display: grid;
  gap: 10px;
  margin-top: 22px;
}

.hero-points span,
.fact-box {
  display: block;
  padding: 14px 16px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.04);
}

.sidebar-cta {
  margin-top: 22px;
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 18px;
  background:
    linear-gradient(135deg, rgba(255, 95, 69, 0.12), rgba(244, 181, 68, 0.08)),
    rgba(255, 255, 255, 0.03);
}

.sidebar-cta strong {
  display: block;
  margin-bottom: 8px;
  font-size: 1.08rem;
}

.sidebar-cta p {
  margin: 0 0 14px;
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(260px, 320px) minmax(0, 1fr);
  gap: 22px;
  margin-top: 22px;
  align-items: start;
}

.sidebar-card {
  position: sticky;
  top: 96px;
  padding: 24px 20px;
}

.toc-links {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.toc-links a {
  display: block;
  padding: 12px 14px;
  color: var(--text);
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.03);
}

.guide-menu {
  margin-top: 22px;
}

.guide-menu-links {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.guide-menu-links a {
  display: block;
  padding: 12px 14px;
  color: var(--muted);
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.02);
}

.guide-menu-links a.is-current {
  color: var(--text);
  border-color: rgba(244, 181, 68, 0.28);
  background: rgba(244, 181, 68, 0.08);
}

.main-column {
  display: grid;
  gap: 22px;
}

.content-card {
  padding: 28px 24px;
}

.content-card h2 {
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  margin-bottom: 16px;
}

.content-card h3 {
  margin: 28px 0 12px;
  font-size: 1.35rem;
}

.content-card ul,
.content-card ol {
  padding-left: 20px;
}

.content-card p + p,
.content-card ul + p,
.content-card p + ul {
  margin-top: 14px;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
}

th,
td {
  padding: 14px 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--gold);
  font-size: 0.94rem;
  background: rgba(255, 255, 255, 0.04);
}

td {
  color: var(--muted);
}

.author-box {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 18px;
  align-items: center;
}

.author-box img {
  aspect-ratio: 1 / 1;
}

.author-name {
  margin: 0 0 6px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
}

.author-role {
  margin: 0 0 10px;
}

.faq-card details {
  padding: 16px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.faq-card details:last-child {
  border-bottom: 0;
}

.faq-card summary {
  cursor: pointer;
  font-weight: 700;
  list-style: none;
}

.faq-card summary::-webkit-details-marker {
  display: none;
}

.faq-card details p {
  margin-top: 12px;
}

.cta-card-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px;
  align-items: center;
}

.related-guides-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.related-guide-card,
.pager-link {
  display: block;
  padding: 18px;
  color: var(--text);
  text-decoration: none;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
}

.related-guide-card strong,
.pager-link strong {
  display: block;
  margin-bottom: 8px;
}

.related-guide-card span,
.pager-link span {
  color: var(--muted);
  line-height: 1.6;
}

.pager-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.pager-link-next {
  text-align: right;
}

@media (max-width: 980px) {
  .hero-card,
  .content-grid,
  .author-box,
  .cta-card-layout {
    grid-template-columns: 1fr;
  }

  .sidebar-card {
    position: static;
  }
}

@media (max-width: 760px) {
  .page-shell {
    width: min(100% - 20px, 1280px);
    padding-top: 10px;
  }

  .page-topbar {
    position: static;
    border-radius: 24px;
  }

  .page-topbar {
    align-items: flex-start;
  }

  .related-guides-grid,
  .pager-nav {
    grid-template-columns: 1fr;
  }

  .pager-link-next {
    text-align: left;
  }

  .hero-card,
  .content-card,
  .sidebar-card {
    padding: 22px 18px;
  }

  .hero-copy h1 {
    max-width: none;
  }

  table {
    min-width: 600px;
  }
}