:root {
  --bg-canvas: #0b0b0d;
  --bg-surface: #19191d;
  --bg-surface-hover: #24242a;
  --text-primary: #f4f4f5;
  --text-muted: #c0c4cc;
  --accent-primary: #dc2626;
  --accent-secondary: #991b1b;
  --border-subtle: rgba(192, 196, 204, 0.2);
  --ease-kinetic: cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-elevation: 0 12px 32px -4px rgba(0, 0, 0, 0.65);
  --shadow-hover: 0 20px 44px -2px rgba(0, 0, 0, 0.85), 0 0 24px -4px rgba(220, 38, 38, 0.35);
}

*, *::before, *::after {
  box-sizing: border-box;
  border-radius: 0px !important;
}

html, body {
  margin: 0;
  padding: 0;
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  overflow-wrap: anywhere;
  hyphens: auto;
}

h1, h2, h3, h4, .heading-font {
  font-family: "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  line-height: 1.2;
  margin-top: 0;
  color: var(--text-primary);
}

a {
  color: var(--text-primary);
  text-decoration: underline;
  text-decoration-color: var(--accent-primary);
  text-underline-offset: 4px;
  transition: color 0.2s var(--ease-kinetic);
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.reading-width {
  max-width: 70ch;
  margin: 0 auto;
}

/* Header & Navigation */
.site-header {
  position: relative;
  background-color: var(--bg-canvas);
  border-bottom: 1px solid var(--border-subtle);
  padding: 1.25rem 0 0 0;
}

.header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 1rem;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  font-family: "Arial Narrow", "Helvetica Neue", sans-serif;
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-primary);
}

.brand-square {
  width: 18px;
  height: 18px;
  background-color: var(--accent-primary);
  display: inline-block;
}

.mobile-menu-btn {
  display: none;
  background: transparent;
  border: 1px solid var(--text-muted);
  color: var(--text-primary);
  font-size: 1.4rem;
  padding: 0.25rem 0.75rem;
  cursor: pointer;
}

.nav-row {
  border-top: 1px solid rgba(192, 196, 204, 0.1);
  display: flex;
  justify-content: center;
  background-color: #111115;
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.25rem;
}

.nav-list li a {
  display: block;
  padding: 0.85rem 1.35rem;
  text-decoration: none;
  font-family: "Arial Narrow", "Helvetica Neue", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-size: 0.88rem;
  color: var(--text-muted);
  transition: background-color 0.2s, color 0.2s;
}

.nav-list li a:hover,
.nav-list li a[aria-current="page"] {
  color: var(--text-primary);
  background-color: var(--bg-surface);
  border-bottom: 2px solid var(--accent-primary);
}

/* Hero Section */
.hero-evidence {
  position: relative;
  background-color: var(--bg-canvas);
  padding: 5.5rem 0 6.5rem;
  overflow: hidden;
  border-bottom: 1px solid var(--border-subtle);
}

.crimson-slab {
  position: absolute;
  top: 0;
  right: 8%;
  width: 320px;
  height: 100%;
  background-color: var(--accent-primary);
  transform: skewX(-16deg);
  z-index: 0;
  opacity: 0.92;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 960px;
}

.eyebrow {
  display: inline-block;
  background-color: var(--bg-surface);
  color: var(--text-muted);
  border-left: 3px solid var(--accent-primary);
  padding: 0.3rem 0.75rem;
  font-family: "Arial Narrow", "Helvetica Neue", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.8rem;
  margin-bottom: 1.25rem;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.75rem);
  font-weight: 800;
  letter-spacing: 0.12em;
  line-height: 1.05;
  margin-bottom: 1.5rem;
  background-color: rgba(11, 11, 13, 0.78);
  padding: 0.5rem 1rem 0.5rem 0;
  display: inline-block;
}

.hero-lead {
  font-size: 1.18rem;
  color: var(--text-primary);
  max-width: 64ch;
  background-color: rgba(11, 11, 13, 0.9);
  padding: 1rem 1.25rem;
  border-left: 2px solid var(--text-muted);
  margin-bottom: 2rem;
}

/* Buttons */
.btn-outline {
  display: inline-block;
  background-color: rgba(11, 11, 13, 0.85);
  color: var(--text-primary);
  border: 1px solid var(--text-primary);
  padding: 0.85rem 1.75rem;
  font-family: "Arial Narrow", "Helvetica Neue", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.88rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.25s var(--ease-kinetic), background-color 0.25s, border-color 0.25s, box-shadow 0.25s;
}

.btn-outline:hover, .btn-outline:focus-visible {
  background-color: var(--accent-primary);
  border-color: var(--accent-primary);
  color: var(--text-primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

/* Section Fields & Diagonal Clips */
.section-block {
  padding: 4.5rem 0;
  position: relative;
}

.section-crimson-diagonal {
  background: linear-gradient(176deg, var(--bg-canvas) 0%, #2a0808 18%, #160506 82%, var(--bg-canvas) 100%);
  clip-path: polygon(0 2%, 100% 0, 100% 98%, 0 100%);
  padding: 5.5rem 0;
}

.section-surface {
  background-color: #121216;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.section-header {
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 1rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1rem;
}

.section-header h2 {
  font-size: clamp(1.6rem, 3.2vw, 2.35rem);
  margin: 0;
}

.section-meta {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-family: "Arial Narrow", sans-serif;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* Factual Stat Strips */
.stat-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}

.stat-cell {
  background-color: var(--bg-surface);
  padding: 1.5rem;
  box-shadow: var(--shadow-elevation);
  border-top: 3px solid var(--accent-primary);
}

.stat-number {
  display: block;
  font-family: "Arial Narrow", "Helvetica Neue", sans-serif;
  font-size: 2.1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text-primary);
}

.stat-label {
  display: block;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
}

/* Grids & Square Borderless Panels */
.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.75rem;
}

.grid-2col {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 2rem;
}

.card-panel {
  background-color: var(--bg-surface);
  padding: 2rem;
  border: none;
  box-shadow: var(--shadow-elevation);
  transition: transform 0.3s var(--ease-kinetic), box-shadow 0.3s var(--ease-kinetic), background-color 0.3s;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.card-panel:hover {
  transform: translateY(-5px) scale(1.01);
  background-color: var(--bg-surface-hover);
  box-shadow: var(--shadow-hover);
}

.card-tag {
  font-family: "Arial Narrow", sans-serif;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--accent-primary);
  margin-bottom: 0.65rem;
  display: block;
  font-weight: 700;
}

/* Media & Images */
.media-frame-4x3 {
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background-color: #0e0e11;
  margin-bottom: 1.25rem;
}

.media-frame-16x9 {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background-color: #0e0e11;
  margin-bottom: 1.5rem;
}

.media-frame-1x1 {
  width: 100%;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background-color: #0e0e11;
  margin-bottom: 1.25rem;
}

.media-frame-4x3 img,
.media-frame-16x9 img,
.media-frame-1x1 img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Claim / Evidence / Verdict Accordions */
.accordion-stack {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.accordion-item {
  background-color: var(--bg-surface);
  box-shadow: var(--shadow-elevation);
}

.accordion-trigger {
  width: 100%;
  background: none;
  border: none;
  color: var(--text-primary);
  padding: 1.35rem 1.75rem;
  text-align: left;
  font-family: "Arial Narrow", "Helvetica Neue", sans-serif;
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color 0.2s;
}

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

.accordion-icon {
  color: var(--accent-primary);
  font-weight: 700;
  font-size: 1.25rem;
  margin-left: 1rem;
}

.accordion-panel {
  padding: 0 1.75rem 1.75rem;
  border-top: 1px solid var(--border-subtle);
}

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

.verdict-badge {
  display: inline-block;
  background-color: var(--accent-primary);
  color: var(--text-primary);
  padding: 0.2rem 0.6rem;
  font-family: "Arial Narrow", sans-serif;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-right: 0.5rem;
}

/* Keyboard-Accessible Definition Tabs */
.tabs-container {
  background-color: var(--bg-surface);
  box-shadow: var(--shadow-elevation);
  padding: 1.5rem;
}

.tablist {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 1rem;
  margin-bottom: 1.5rem;
}

.tab-btn {
  background-color: var(--bg-canvas);
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
  padding: 0.65rem 1.25rem;
  font-family: "Arial Narrow", "Helvetica Neue", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.85rem;
  cursor: pointer;
  transition: background-color 0.2s, color 0.2s, border-color 0.2s;
}

.tab-btn[aria-selected="true"] {
  background-color: var(--accent-primary);
  color: var(--text-primary);
  border-color: var(--accent-primary);
}

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

/* Tables & Sunscreen Comparison Strips */
.table-scroll {
  overflow-x: auto;
  margin: 1.5rem 0;
  background-color: var(--bg-surface);
  box-shadow: var(--shadow-elevation);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

th, td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
}

th {
  font-family: "Arial Narrow", "Helvetica Neue", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  background-color: #131317;
  font-size: 0.85rem;
}

/* Source Footnotes */
.footnote-box {
  background-color: #121215;
  border-left: 3px solid var(--text-muted);
  padding: 1.25rem 1.5rem;
  margin-top: 2rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footnote-box ol {
  margin: 0.5rem 0 0;
  padding-left: 1.25rem;
}

/* Forms & Claim Submission Workspace */
.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-family: "Arial Narrow", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.85rem;
  margin-bottom: 0.45rem;
  color: var(--text-muted);
}

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

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

.workspace-preview {
  background-color: var(--bg-canvas);
  border: 1px solid var(--border-subtle);
  padding: 1.25rem;
  font-family: monospace;
  white-space: pre-wrap;
  color: var(--text-muted);
  min-height: 180px;
  margin-bottom: 1.25rem;
}

/* Scroll Reveal */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.65s var(--ease-kinetic), transform 0.65s var(--ease-kinetic);
}

.reveal.reveal-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Footer */
.site-footer {
  background-color: #070709;
  border-top: 1px solid var(--border-subtle);
  padding: 4rem 0 3rem;
  margin-top: 4rem;
  font-size: 0.92rem;
  color: var(--text-muted);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: 1.75rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
}

/* Responsive Breakpoints */
@media (max-width: 768px) {
  .mobile-menu-btn {
    display: inline-block;
  }
  .nav-row {
    display: none;
  }
  .nav-row.nav-open {
    display: block;
  }
  .nav-list {
    flex-direction: column;
  }
  .nav-list li a {
    padding: 0.9rem 1.5rem;
    border-bottom: 1px solid rgba(192, 196, 204, 0.08);
  }
  .crimson-slab {
    width: 140px;
    right: -20px;
  }
}

@media (max-width: 480px) {
  .hero-evidence {
    padding: 3.5rem 0 4rem;
  }
  .card-panel {
    padding: 1.5rem;
  }
}

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