:root {
  --bg-canvas: #0b0b0d;
  --bg-surface: #1b1b20;
  --bg-surface-elevated: #24242b;
  --bg-surface-soft: #141418;
  --text-primary: #f5f4f2;
  --text-muted: #c0c4cc;
  --accent-primary: #dc2626;
  --accent-hover: #b91c1c;
  --accent-dim: #450a0a;
  --border-subtle: #2d2d37;
  --border-strong: #3f3f4e;
  --ease-kinetic: cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-elevation: 0 16px 36px -8px rgba(0, 0, 0, 0.6);
  --glow-accent: 0 0 24px -6px rgba(220, 38, 38, 0.45);
  --font-serif: Georgia, "Times New Roman", Times, serif;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
}

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

html {
  font-size: 16px;
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  line-height: 1.65;
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  overflow-wrap: anywhere;
  hyphens: auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
  object-fit: cover;
}

/* Header & Navigation */
.site-header {
  position: static;
  width: 100%;
  background: #0e0e12;
  border-bottom: 1px solid var(--border-subtle);
  padding: 1.25rem 2rem;
  z-index: 100;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.brand-mark {
  width: 28px;
  height: 28px;
  background: var(--accent-primary);
  border-radius: 4px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-weight: 800;
  font-size: 0.9rem;
  box-shadow: var(--glow-accent);
}

.brand-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.desktop-nav a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 0.35rem 0.6rem;
  border-bottom: 2px solid transparent;
  transition: color 0.2s var(--ease-kinetic), border-color 0.2s var(--ease-kinetic);
}

.desktop-nav a:hover,
.desktop-nav a.active {
  color: var(--text-primary);
  border-bottom-color: var(--accent-primary);
}

.mobile-menu-btn {
  display: none;
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  font-size: 1.5rem;
  line-height: 1;
  width: 42px;
  height: 42px;
  border-radius: 4px;
  cursor: pointer;
  padding: 0;
  text-align: center;
}

.mobile-menu-btn:focus-visible {
  outline: 2px solid var(--accent-primary);
}

.mobile-dropdown {
  display: none;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-strong);
  padding: 1rem 2rem;
}

.mobile-dropdown.is-open {
  display: block;
}

.mobile-dropdown nav {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.mobile-dropdown a {
  padding: 0.5rem 0;
  color: var(--text-muted);
  font-size: 1rem;
  border-bottom: 1px solid var(--border-subtle);
}

.mobile-dropdown a:hover,
.mobile-dropdown a.active {
  color: var(--accent-primary);
}

/* Background Grids */
.grid-bg-overlay {
  background-image: 
    linear-gradient(to right, rgba(220, 38, 38, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(220, 38, 38, 0.04) 1px, transparent 1px);
  background-size: 32px 32px;
}

/* Layout Core */
main {
  flex: 1 0 auto;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

.reading-container {
  max-width: 72ch;
  margin: 0 auto;
}

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.3rem);
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
}

p {
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  font-size: 1.05rem;
}

p.lead {
  font-size: 1.25rem;
  color: var(--text-primary);
  line-height: 1.6;
  margin-bottom: 2rem;
}

/* Buttons and Badges */
.btn-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--accent-primary);
  color: #ffffff;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.8rem 1.75rem;
  border-radius: 9999px;
  border: none;
  cursor: pointer;
  transition: background-color 0.2s var(--ease-kinetic), transform 0.2s var(--ease-kinetic), box-shadow 0.2s var(--ease-kinetic);
  box-shadow: 0 4px 14px rgba(220, 38, 38, 0.35);
}

.btn-pill:hover {
  background-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(220, 38, 38, 0.5);
}

.btn-pill-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-surface-elevated);
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.8rem 1.75rem;
  border-radius: 9999px;
  border: 1px solid var(--border-strong);
  cursor: pointer;
  transition: all 0.2s var(--ease-kinetic);
}

.btn-pill-secondary:hover {
  background-color: var(--bg-surface);
  border-color: var(--accent-primary);
  color: #ffffff;
}

.badge-tag {
  display: inline-block;
  background-color: var(--accent-primary);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.3rem 0.85rem;
  border-radius: 9999px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

/* Hero Section */
.hero-block {
  padding: 5rem 1.5rem 4rem;
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
}

.hero-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.hero-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.meta-code {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-primary);
  font-weight: 600;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

/* Stat & Signal Chain Strip */
.stat-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 2rem;
  margin: 3rem 0;
}

.stat-item {
  border-left: 3px solid var(--accent-primary);
  padding-left: 1.25rem;
}

.stat-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.stat-value {
  font-family: var(--font-serif);
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--text-primary);
}

.stat-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0;
}

/* Photo-Topped Cards with Overlapping Badges */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin: 2.5rem 0;
}

.studio-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  transition: transform 0.25s var(--ease-kinetic), border-color 0.25s var(--ease-kinetic), box-shadow 0.25s var(--ease-kinetic);
}

.studio-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-elevation), var(--glow-accent);
}

.card-media {
  position: relative;
  width: 100%;
  height: 220px;
  overflow: hidden;
  background-color: #121216;
}

.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s var(--ease-kinetic);
}

.studio-card:hover .card-media img {
  transform: scale(1.03);
}

.card-media .badge-tag {
  position: absolute;
  bottom: -12px;
  left: 1.5rem;
  z-index: 2;
}

.card-body {
  padding: 1.8rem 1.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.card-body h3 {
  margin-bottom: 0.75rem;
}

.card-body p {
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.card-link {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--accent-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.card-link:hover {
  color: #ffffff;
  text-decoration: underline;
}

/* Signal Chain Flow Diagram */
.chain-diagram {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin: 2.5rem 0;
}

.chain-step {
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  padding: 1.5rem 1rem;
  position: relative;
}

.chain-step-num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-primary);
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.chain-step-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.chain-step-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0;
}

/* Accessible Tab Component */
.tab-module {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  margin: 2.5rem 0;
}

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

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 1rem 1.5rem;
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transition: all 0.2s var(--ease-kinetic);
}

.tab-btn:hover {
  color: var(--text-primary);
}

.tab-btn[aria-selected="true"] {
  color: #ffffff;
  background-color: var(--bg-surface);
  border-bottom-color: var(--accent-primary);
}

.tab-panel {
  padding: 2rem;
  display: none;
}

.tab-panel.active {
  display: block;
}

/* Troubleshooting Accordion */
.accordion-group {
  margin: 2rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

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

.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-serif);
  font-size: 1.15rem;
  text-align: left;
  cursor: pointer;
}

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

.accordion-icon {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  color: var(--accent-primary);
  transition: transform 0.2s var(--ease-kinetic);
}

.accordion-trigger[aria-expanded="true"] .accordion-icon {
  transform: rotate(45deg);
}

.accordion-content {
  padding: 0 1.5rem 1.5rem;
  color: var(--text-muted);
  display: none;
}

.accordion-content.is-open {
  display: block;
}

/* Callout Box */
.callout-box {
  background-color: var(--bg-surface-elevated);
  border-left: 4px solid var(--accent-primary);
  padding: 1.5rem;
  margin: 2rem 0;
}

.callout-box h4 {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
  color: #ffffff;
}

.callout-box p:last-child {
  margin-bottom: 0;
}

/* Tables */
.table-wrap {
  width: 100%;
  overflow-x: auto;
  margin: 2rem 0;
  border: 1px solid var(--border-subtle);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
}

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

th {
  background-color: var(--bg-surface-soft);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
}

tr:nth-child(even) {
  background-color: rgba(255, 255, 255, 0.015);
}

/* Contact / Studio Form Tool */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group.full-width {
  grid-column: span 2;
}

label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

input, select, textarea {
  background-color: var(--bg-surface-soft);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  padding: 0.85rem 1rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  border-radius: 0;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 2px var(--accent-dim);
}

/* Scroll Reveal */
.reveal-item {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s var(--ease-kinetic), transform 0.6s var(--ease-kinetic);
}

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

/* Footer */
.site-footer {
  background-color: #08080a;
  border-top: 1px solid var(--border-subtle);
  padding: 4rem 1.5rem 2rem;
  margin-top: 4rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand-p {
  max-width: 38ch;
  margin-top: 1rem;
  font-size: 0.9rem;
}

.footer-col h5 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-col a:hover {
  color: var(--accent-primary);
}

.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.85rem;
}

.footer-meta-block {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

/* Responsive Breakpoints */
@media (max-width: 900px) {
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
  .form-group.full-width {
    grid-column: span 1;
  }
}

@media (max-width: 768px) {
  .site-header {
    padding: 1rem 1.25rem;
  }
  .desktop-nav {
    display: none;
  }
  .mobile-menu-btn {
    display: block;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .hero-block {
    padding: 3.5rem 1rem 2.5rem;
  }
  .container {
    padding: 2.5rem 1rem;
  }
  .card-grid {
    grid-template-columns: 1fr;
  }
}

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