* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

html[data-theme]:not([data-theme="default"]) {
  --cp-bg: var(--color-base-200);
  --cp-bg-elevated: var(--color-base-300);
  --cp-surface: var(--color-base-100);
  --cp-surface-soft: var(--color-base-200);
  --cp-border: color-mix(in oklch, var(--color-base-content) 18%, transparent);
  --cp-border-strong: color-mix(in oklch, var(--color-base-content) 38%, transparent);
  --cp-text: var(--color-base-content);
  --cp-text-muted: color-mix(in oklch, var(--color-base-content) 72%, transparent);
  --cp-text-soft: color-mix(in oklch, var(--color-base-content) 82%, transparent);
  --cp-accent: var(--color-primary);
  --cp-accent-hover: color-mix(in oklch, var(--color-primary) 82%, var(--color-base-content));
  --cp-accent-soft: color-mix(in oklch, var(--color-primary) 14%, transparent);
  --cp-accent-fg: var(--color-primary-content);
  --cp-success: var(--color-success);
  --cp-danger: var(--color-error);
  --cp-warning: var(--color-warning);
  --cp-link: var(--color-primary);
  --cp-shadow: 0 18px 48px color-mix(in oklch, var(--color-base-content) 18%, transparent);
  --cp-overlay: color-mix(in oklch, var(--color-base-100) 80%, transparent);
  --cp-panel: color-mix(in oklch, var(--color-base-100) 86%, transparent);
  --cp-panel-strong: color-mix(in oklch, var(--color-base-100) 96%, transparent);
  --cp-sheen: color-mix(in oklch, var(--color-base-content) 8%, transparent);
  --cp-highlight: color-mix(in oklch, var(--color-primary) 14%, transparent);
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--cp-bg);
  color: var(--cp-text);
  font-family: "Segoe UI", Aptos, Calibri, -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.6;
}

a {
  color: var(--cp-link);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

img {
  max-width: 100%;
  height: auto;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: 12px;
  transform: translateY(-160%);
  background: var(--cp-accent);
  color: var(--cp-accent-fg);
  border-radius: 0.625rem;
  padding: 8px 12px;
  z-index: 20;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-shell {
  min-height: 100vh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--cp-border);
  background: var(--cp-panel-strong);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 14px 20px;
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--cp-text);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 0.625rem;
  background: var(--cp-accent);
  color: var(--cp-accent-fg);
  font-weight: 700;
}

.brand-title {
  display: block;
  font-size: 0.96rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.brand-subtitle {
  display: block;
  color: var(--cp-text-muted);
  font-size: 0.8rem;
}

.theme-picker {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  border: 1px solid var(--cp-border);
  border-radius: 999px;
  background: var(--cp-surface-soft);
  color: var(--cp-text-muted);
  box-shadow: 0 0 2px var(--cp-border), 0 1px 2px var(--cp-border);
  padding: 0.28rem 0.4rem 0.28rem 0.72rem;
  font-size: 0.82rem;
  white-space: nowrap;
}

.theme-picker span {
  font-weight: 750;
}

.theme-picker select {
  min-width: 8.25rem;
  border: 0;
  border-radius: 999px;
  background: var(--cp-surface);
  color: var(--cp-text);
  box-shadow: inset 0 0 0 1px var(--cp-border);
  cursor: pointer;
  font: inherit;
  padding: 0.32rem 1.9rem 0.32rem 0.65rem;
}

.theme-picker select:focus-visible {
  outline: 2px solid var(--cp-accent);
  outline-offset: 2px;
}

.site-hero {
  border-bottom: 1px solid var(--cp-border);
  background: var(--cp-bg-elevated);
}

.site-hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(220px, 0.55fr);
  gap: 32px;
  align-items: center;
  max-width: 1180px;
  margin: 0 auto;
  padding: 24px 20px 20px;
}

.eyebrow {
  color: var(--cp-accent);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.site-hero h1 {
  margin: 8px 0;
  font-size: clamp(1.4rem, 3vw, 2.4rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.tagline {
  max-width: 760px;
  color: var(--cp-text-muted);
  font-size: clamp(1.05rem, 2vw, 1.35rem);
}

.hero-panel {
  border: 1px solid var(--cp-border);
  border-radius: 16px;
  background: var(--cp-surface);
  box-shadow: 0 0 2px var(--cp-border), 0 1px 2px var(--cp-border);
  padding: 18px;
}

.hero-panel img {
  display: block;
  width: 100%;
  max-width: 180px;
  aspect-ratio: 1;
  object-fit: cover;
  object-position: top center;
  margin: 0 auto;
  border: 1px solid var(--cp-border);
  border-radius: 16px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 12px;
}

.hero-stat {
  border: 1px solid var(--cp-border);
  border-radius: 0.625rem;
  background: var(--cp-surface-soft);
  padding: 10px;
}

.hero-stat strong,
.hero-stat span {
  display: block;
}

.hero-stat strong {
  color: var(--cp-accent);
  font-size: 1.1rem;
}

.hero-stat span {
  color: var(--cp-text-muted);
  font-size: 0.74rem;
}

.deck-nav {
  border-bottom: 1px solid var(--cp-border);
  background: var(--cp-panel);
}

.deck-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 14px 20px;
}

.step-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.step-link,
.pager-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  border: 1px solid var(--cp-border);
  border-radius: 999px;
  background: var(--cp-surface);
  color: var(--cp-text);
  font-size: 0.86rem;
  font-weight: 650;
  text-decoration: none;
  transition: border-color 140ms ease, background 140ms ease, color 140ms ease;
}

.step-link {
  width: 36px;
}

.step-link:hover,
.pager-link:hover {
  border-color: var(--cp-border-strong);
}

.step-link[aria-current="page"] {
  border-color: var(--cp-accent);
  background: var(--cp-accent);
  color: var(--cp-accent-fg);
}

.pager-link {
  gap: 6px;
  padding: 0 14px;
}

.pager-link.is-disabled {
  visibility: hidden;
}

.content-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 24px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 20px 56px;
}

.side-panel {
  position: sticky;
  top: 96px;
  align-self: start;
  border: 1px solid var(--cp-border);
  border-radius: 16px;
  background: var(--cp-surface);
  box-shadow: 0 0 2px var(--cp-border), 0 1px 2px var(--cp-border);
  padding: 12px;
}

.side-panel-title {
  margin: 4px 8px 10px;
  color: var(--cp-text-muted);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.side-link {
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 10px;
  align-items: center;
  border-radius: 0.625rem;
  color: var(--cp-text);
  padding: 10px 8px;
  text-decoration: none;
}

.side-link:hover,
.side-link[aria-current="page"] {
  background: var(--cp-accent-soft);
}

.side-link[aria-current="page"] .side-index {
  border-color: var(--cp-accent);
  background: var(--cp-accent);
  color: var(--cp-accent-fg);
}

.side-index {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border: 1px solid var(--cp-border);
  border-radius: 999px;
  color: var(--cp-text-muted);
  font-size: 0.78rem;
  font-weight: 700;
}

.side-title {
  display: block;
  font-weight: 650;
  line-height: 1.25;
}

.side-meta {
  display: block;
  color: var(--cp-text-muted);
  font-size: 0.76rem;
}

.content-card {
  overflow: hidden;
  border: 1px solid var(--cp-border);
  border-radius: 16px;
  background: var(--cp-surface);
  box-shadow: 0 0 2px var(--cp-border), 0 1px 2px var(--cp-border);
}

.content-card-header {
  border-bottom: 1px solid var(--cp-border);
  background: var(--cp-surface-soft);
  padding: 20px 24px;
}

.content-card-header p {
  margin: 6px 0 0;
  color: var(--cp-text-muted);
}

.prose {
  padding: 10px 24px 30px;
}

.prose h1,
.prose h2,
.prose h3,
.prose h4 {
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.prose h1 {
  margin: 24px 0 12px;
  font-size: clamp(2rem, 4vw, 3.2rem);
}

.prose h2 {
  margin: 30px 0 12px;
  border-top: 1px solid var(--cp-border);
  padding-top: 24px;
  font-size: clamp(1.45rem, 3vw, 2.1rem);
}

.prose h3 {
  margin: 18px 0 8px;
  font-size: 1.15rem;
}

.prose h4 {
  margin: 0 0 4px;
  font-size: 1rem;
}

.prose p,
.prose li {
  color: var(--cp-text);
}

.prose p {
  margin: 0 0 16px;
}

.prose ul {
  padding-left: 1.2rem;
}

.prose li {
  margin: 10px 0;
}

.prose blockquote {
  margin: 28px 0;
  border-left: 4px solid var(--cp-accent);
  border-radius: 0 16px 16px 0;
  background: var(--cp-accent-soft);
  padding: 18px 20px;
}

.prose blockquote p:last-child {
  margin-bottom: 0;
}

.prose hr {
  margin: 28px 0;
  border: 0;
  border-top: 1px solid var(--cp-border);
}

.prose strong {
  color: var(--cp-text);
}

.not-prose {
  margin: 24px 0;
}

.deck-intro p,
.prose .text-2xl {
  color: var(--cp-text);
  font-size: clamp(1.18rem, 2.5vw, 1.65rem);
  line-height: 1.35;
}

.grid {
  display: grid;
  gap: 16px;
}

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.flex-row {
  flex-direction: row;
}

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

.justify-start {
  justify-content: flex-start;
}

.gap-2 {
  gap: 8px;
}

.gap-4 {
  gap: 16px;
}

.gap-6 {
  gap: 24px;
}

.mb-6 {
  margin-bottom: 24px;
}

.mb-8 {
  margin-bottom: 32px;
}

.my-8 {
  margin-top: 32px;
  margin-bottom: 32px;
}

.mt-1 {
  margin-top: 4px;
}

.pt-1 {
  padding-top: 4px;
}

.py-5 {
  padding-top: 20px;
  padding-bottom: 20px;
}

.px-5 {
  padding-right: 20px;
  padding-left: 20px;
}

.flex-1 {
  flex: 1;
}

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

.float-left {
  float: left;
}

.overflow-hidden {
  overflow: hidden;
}

.chapter-badge {
  display: grid;
  place-items: center;
  width: 96px;
  height: 96px;
  border: 2px solid var(--cp-accent);
  border-radius: 0.625rem;
  background: var(--cp-accent-soft);
  color: var(--cp-accent);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
  flex-shrink: 0;
}

.w-24 {
  width: 96px;
}

.h-24 {
  height: 96px;
}

.w-32 {
  width: 128px;
}

.h-32 {
  height: 128px;
}

.w-40 {
  width: 160px;
}

.object-contain {
  object-fit: contain;
}

.rounded,
.rounded-lg,
.rounded-xl {
  border-radius: 0.625rem;
}

.shadow-md {
  box-shadow: 0 0 2px var(--cp-border), 0 1px 2px var(--cp-border);
}

.text-sm {
  color: var(--cp-text-muted);
  font-size: 0.92rem;
}

.text-base,
.text-lg {
  font-size: 1rem;
}

.font-light {
  font-weight: 350;
}

.font-semibold {
  font-weight: 650;
}

.font-bold {
  font-weight: 700;
}

.italic {
  font-style: italic;
}

.leading-snug {
  line-height: 1.35;
}

.space-y-2 > * + * {
  margin-top: 8px;
}

.space-y-4 > * + * {
  margin-top: 16px;
}

.space-y-6 > * + * {
  margin-top: 24px;
}

.card,
.hero,
.chat-bubble {
  border: 1px solid var(--cp-border);
  border-radius: 16px;
  background: var(--cp-surface-soft);
}

.card-body,
.hero-content {
  padding: 20px;
}

.card-title {
  color: var(--cp-text);
  font-weight: 700;
}

.bg-base-200 {
  background: var(--cp-surface-soft);
}

.badge {
  display: inline-grid;
  place-items: center;
  min-width: 30px;
  height: 30px;
  border: 1px solid var(--cp-border);
  border-radius: 999px;
  font-weight: 700;
}

.badge-primary,
.chat-bubble-primary {
  border-color: var(--cp-accent);
  background: var(--cp-accent);
  color: var(--cp-accent-fg);
}

.chat-bubble-soft {
  border-color: var(--cp-accent);
  background: var(--cp-accent-soft);
  color: var(--cp-text);
}

.chat {
  display: flex;
}

.chat-start {
  justify-content: flex-start;
}

.chat-bubble {
  max-width: 860px;
  padding: 16px 18px;
}

.link-primary {
  color: var(--cp-link);
}

.min-w-24 {
  min-width: 96px;
}

.footer {
  border-top: 1px solid var(--cp-border);
  background: var(--cp-bg-elevated);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 24px 20px;
  color: var(--cp-text-muted);
  font-size: 0.9rem;
}

@media (min-width: 760px) {
  [class~="md:grid-cols-2"] {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  [class~="md:flex-row"] {
    flex-direction: row;
  }

  [class~="md:block"] {
    display: block;
  }
}

@media (max-width: 920px) {
  .site-hero-inner,
  .content-layout {
    grid-template-columns: 1fr;
  }

  .side-panel {
    position: static;
  }

  .side-panel nav {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  .topbar-inner,
  .deck-nav-inner,
  .footer-inner {
    align-items: stretch;
    flex-direction: column;
  }

  .pager-link {
    display: none;
  }

  .theme-picker {
    justify-content: space-between;
  }

  .site-hero-inner {
    padding-top: 32px;
  }

  .hero-stats {
    grid-template-columns: 1fr;
  }

  .side-panel nav {
    grid-template-columns: 1fr;
  }

  .prose,
  .content-card-header {
    padding-right: 18px;
    padding-left: 18px;
  }
}