:root {
  --bg-canvas: #ffffff;
  --bg-surface: #f1f5f9;
  --bg-surface-hover: #e2e8f0;
  --text-primary: #1e293b;
  --text-muted: #475569;
  --accent-primary: #a32743;
  --accent-secondary: #821d35;
  --border-subtle: #cbd5e1;
  --radius-sm: 4px;
  --font-serif: Georgia, "Times New Roman", Times, serif;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  overflow-wrap: anywhere;
  hyphens: auto;
}

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  color: var(--text-primary);
  line-height: 1.25;
  margin-bottom: 0.75rem;
  font-weight: 700;
}

h1 {
  font-size: clamp(2.25rem, 4vw, 3.25rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.6rem, 2.5vw, 2rem);
  margin-top: 2rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

h3 {
  font-size: 1.3rem;
  margin-top: 1.25rem;
}

p, ul, ol {
  margin-bottom: 1.15rem;
}

ul, ol {
  padding-left: 1.5rem;
}

li {
  margin-bottom: 0.4rem;
}

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

a:hover, a:focus-visible {
  color: var(--accent-secondary);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.prose {
  max-width: 70ch;
}

/* Header & Navigation */
.site-header {
  position: relative;
  background-color: var(--bg-canvas);
  border-bottom: 1px solid var(--border-subtle);
  padding: 1rem 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--text-primary);
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.35rem;
  flex-shrink: 0;
}

.brand-mark {
  display: inline-block;
  width: 24px;
  height: 24px;
  background-color: var(--accent-primary);
  border-radius: 2px;
  position: relative;
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 5px;
  border: 2px solid var(--bg-canvas);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 2rem;
  flex-grow: 1;
}

.nav-group {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-group-secondary {
  padding-left: 1.25rem;
  border-left: 1px solid var(--border-subtle);
}

.nav-group a {
  text-decoration: none;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.35rem 0.5rem;
  border-radius: var(--radius-sm);
}

.nav-group a:hover, .nav-group a[aria-current="page"] {
  background-color: var(--bg-surface);
  color: var(--accent-primary);
}

.mobile-menu-btn {
  display: none;
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.75rem;
  font-size: 1.25rem;
  line-height: 1;
  color: var(--text-primary);
  cursor: pointer;
}

/* Hero Section */
.hero-field {
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  padding: 3.5rem 0;
}

.hero-kicker {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-primary);
  margin-bottom: 0.75rem;
}

.hero-lead {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 68ch;
  margin-bottom: 1.5rem;
}

/* Buttons */
.btn-outline {
  display: inline-block;
  background-color: var(--bg-canvas);
  color: var(--accent-primary);
  border: 2px solid var(--accent-primary);
  border-radius: 0;
  padding: 0.75rem 1.35rem;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-decoration: none;
  cursor: pointer;
}

.btn-outline:hover, .btn-outline:focus-visible {
  background-color: var(--accent-primary);
  color: var(--bg-canvas);
}

.btn-solid {
  display: inline-block;
  background-color: var(--accent-primary);
  color: var(--bg-canvas);
  border: 2px solid var(--accent-primary);
  border-radius: 0;
  padding: 0.75rem 1.35rem;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-decoration: none;
  cursor: pointer;
}

.btn-solid:hover, .btn-solid:focus-visible {
  background-color: var(--accent-secondary);
  border-color: var(--accent-secondary);
  color: var(--bg-canvas);
}

/* Stat & Inventory Strips */
.stat-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  margin: 1.75rem 0;
}

.stat-item {
  border-left: 3px solid var(--accent-primary);
  padding-left: 0.85rem;
}

.stat-label {
  display: block;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  font-weight: 600;
}

.stat-value {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* Grids & Flat Cards */
.section-block {
  padding: 3rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.section-block.alt-bg {
  background-color: var(--bg-surface);
}

.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.panel-card {
  background-color: var(--bg-canvas);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.alt-bg .panel-card {
  background-color: var(--bg-canvas);
}

.panel-step-num {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-primary);
  margin-bottom: 0.4rem;
}

.split-instruction {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
  align-items: start;
  margin: 1.5rem 0;
}

.img-frame {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  background-color: var(--bg-surface);
  overflow: hidden;
}

.img-frame img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.img-caption {
  padding: 0.65rem 0.85rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-subtle);
  background-color: var(--bg-canvas);
}

/* Ordered Turn Panels */
.turn-sequence-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0;
  display: grid;
  gap: 1rem;
}

.turn-step-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.25rem;
  background-color: var(--bg-canvas);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  align-items: start;
}

.turn-badge {
  background-color: var(--accent-primary);
  color: var(--bg-canvas);
  font-weight: 700;
  font-size: 0.9rem;
  padding: 0.35rem 0.7rem;
  border-radius: var(--radius-sm);
  text-align: center;
  min-width: 85px;
}

/* Accessible Rule Tabs */
.tabs-container {
  margin: 1.5rem 0;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  background-color: var(--bg-canvas);
}

.tab-list {
  display: flex;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--border-subtle);
  background-color: var(--bg-surface);
}

.tab-btn {
  background: transparent;
  border: none;
  border-right: 1px solid var(--border-subtle);
  padding: 0.85rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-muted);
  cursor: pointer;
}

.tab-btn[aria-selected="true"] {
  background-color: var(--bg-canvas);
  color: var(--accent-primary);
  border-bottom: 2px solid var(--accent-primary);
}

.tab-panel {
  padding: 1.5rem;
}

.tab-panel[hidden] {
  display: none;
}

/* Accordion / FAQ */
.accordion-group {
  display: grid;
  gap: 0.75rem;
  margin: 1.5rem 0;
}

.accordion-item {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  background-color: var(--bg-canvas);
}

.accordion-trigger {
  width: 100%;
  text-align: left;
  background-color: var(--bg-surface);
  border: none;
  padding: 1rem 1.25rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.accordion-trigger:hover {
  background-color: var(--bg-surface-hover);
}

.accordion-body {
  padding: 1.25rem;
  border-top: 1px solid var(--border-subtle);
}

.accordion-body[hidden] {
  display: none;
}

/* Tables */
.table-wrap {
  overflow-x: auto;
  margin: 1.5rem 0;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
}

table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--bg-canvas);
  font-size: 0.95rem;
}

th, td {
  padding: 0.85rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
}

th {
  background-color: var(--bg-surface);
  font-weight: 700;
  color: var(--text-primary);
}

/* Forms & Question Worksheet */
.worksheet-form {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 1.75rem;
  margin: 1.5rem 0;
}

.form-row {
  margin-bottom: 1.25rem;
}

.form-row label {
  display: block;
  font-weight: 700;
  margin-bottom: 0.4rem;
  font-size: 0.95rem;
}

.form-control {
  width: 100%;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  background-color: var(--bg-canvas);
  font-family: inherit;
  font-size: 1rem;
  color: var(--text-primary);
}

.form-control:focus {
  outline: 2px solid var(--accent-primary);
  border-color: var(--accent-primary);
}

.worksheet-output {
  margin-top: 1.5rem;
  padding: 1.25rem;
  background-color: var(--bg-canvas);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

/* Notice Box */
.rule-notice {
  background-color: var(--bg-surface);
  border-left: 4px solid var(--accent-primary);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  font-size: 0.95rem;
}

/* Footer */
.site-footer {
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  padding: 3rem 0 2rem;
  margin-top: 3rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-links {
  list-style: none;
  padding: 0;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-bottom {
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
}

/* Responsive Breakpoints */
@media (max-width: 900px) {
  .split-instruction {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .mobile-menu-btn {
    display: inline-block;
  }

  .nav-wrapper {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--bg-canvas);
    border-bottom: 1px solid var(--border-subtle);
    padding: 1rem 1.25rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    z-index: 50;
  }

  .nav-wrapper.is-open {
    display: flex;
  }

  .nav-group {
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
    gap: 0.5rem;
  }

  .nav-group-secondary {
    padding-left: 0;
    border-left: none;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-subtle);
  }

  .turn-step-item {
    grid-template-columns: 1fr;
    gap: 0.6rem;
  }
}

@media (prefers-reduced-motion: reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}