:root {
  --bg-canvas: #f7f5f0;
  --bg-surface: #ffffff;
  --bg-surface-hover: #efeae0;
  --text-primary: #111111;
  --text-muted: #57534e;
  --accent-primary: #d62828;
  --accent-secondary: #991b1b;
  --border-subtle: #dcd6c8;
  --ease-kinetic: cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-elevation: 0 12px 32px -4px rgba(17, 17, 17, 0.08);
  --glow-accent: 0 0 24px -4px rgba(214, 40, 40, 0.25);
  --glass-backdrop: blur(16px) saturate(180%);
  --radius: 4px;
}

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

html, body {
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.65;
  font-size: 16px;
  overflow-wrap: anywhere;
  hyphens: auto;
}

h1, h2, h3, h4, .folio-heading {
  font-family: "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  line-height: 1.2;
  color: var(--text-primary);
  font-weight: 700;
}

h1 {
  font-size: clamp(2rem, 4vw, 3.25rem);
  margin-bottom: 1.25rem;
}

h2 {
  font-size: clamp(1.5rem, 2.8vw, 2.25rem);
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 0.5rem;
}

h3 {
  font-size: 1.2rem;
  margin-bottom: 0.65rem;
}

p {
  margin-bottom: 1.15rem;
}

a {
  color: var(--accent-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--text-primary);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius);
  object-fit: cover;
  border: 1px solid var(--border-subtle);
  background-color: var(--bg-surface);
}

.grid-bg {
  background-image: 
    linear-gradient(to right, rgba(17, 17, 17, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(17, 17, 17, 0.05) 1px, transparent 1px);
  background-size: 28px 28px;
}

/* Header & Navigation */
.site-header {
  position: relative;
  width: 100%;
  border-bottom: 1px solid var(--border-subtle);
  background-color: transparent;
  transition: background-color 0.3s ease;
  z-index: 20;
}

.site-header.scrolled {
  background-color: var(--bg-canvas);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--text-primary);
  font-family: "Arial Narrow", "Helvetica Neue", sans-serif;
  font-weight: 700;
  font-size: 1.25rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  margin-right: auto;
}

.brand-mark {
  display: inline-block;
  width: 14px;
  height: 14px;
  background-color: var(--accent-primary);
  border-radius: 2px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.main-nav a {
  text-decoration: none;
  color: var(--text-primary);
  font-family: "Arial Narrow", "Helvetica Neue", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.9rem;
  font-weight: 700;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  color: var(--accent-primary);
  border-bottom-color: var(--accent-primary);
}

.menu-dots-btn {
  display: none;
  background: var(--bg-surface);
  border: 1px solid var(--text-primary);
  color: var(--text-primary);
  border-radius: var(--radius);
  padding: 0.35rem 0.7rem;
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
}

/* Containers & Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section-block {
  padding: 4rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

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

.split-spread {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3rem;
  align-items: center;
  margin-bottom: 3rem;
}

.split-spread.reverse {
  grid-template-columns: 0.85fr 1.15fr;
}

.split-spread.reverse .spread-text {
  order: 2;
}

.split-spread.reverse .spread-media {
  order: 1;
}

/* Hero Section */
.hero-section {
  padding: 4.5rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
}

.wayfinding-tag {
  display: inline-block;
  font-family: "Arial Narrow", "Helvetica Neue", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-primary);
  border-left: 3px solid var(--accent-primary);
  padding-left: 0.6rem;
  margin-bottom: 0.85rem;
}

.schematic-note {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
  font-style: italic;
  border-left: 2px solid var(--border-subtle);
  padding-left: 0.5rem;
}

/* Buttons */
.btn-outline {
  display: inline-block;
  background-color: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--text-primary);
  border-radius: 0;
  padding: 0.75rem 1.5rem;
  font-family: "Arial Narrow", "Helvetica Neue", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-weight: 700;
  font-size: 0.9rem;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.25s var(--ease-kinetic), box-shadow 0.25s var(--ease-kinetic), background-color 0.2s ease, color 0.2s ease;
}

.btn-outline:hover {
  background-color: var(--accent-primary);
  border-color: var(--accent-primary);
  color: #ffffff;
  transform: translateY(-3px) scale(1.01);
  box-shadow: var(--shadow-elevation), var(--glow-accent);
}

/* Cards & Grids */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.folio-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s var(--ease-kinetic), box-shadow 0.3s var(--ease-kinetic);
}

.folio-card:hover {
  transform: translateY(-5px) scale(1.015);
  box-shadow: var(--shadow-elevation), var(--glow-accent);
}

.card-media-wrap {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-bottom: 1px solid var(--border-subtle);
}

.card-media-wrap img {
  width: 100%;
  height: 100%;
  border: none;
  border-radius: 0;
}

.card-badge {
  position: absolute;
  bottom: -10px;
  left: 1rem;
  background-color: var(--accent-primary);
  color: #ffffff;
  font-family: "Arial Narrow", "Helvetica Neue", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius);
  z-index: 2;
}

.card-body {
  padding: 1.5rem 1.25rem 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-body p {
  font-size: 0.95rem;
  color: var(--text-muted);
  flex: 1;
}

/* Stop Sequences & Checklists */
.stop-sequence {
  list-style: none;
  border-left: 2px solid var(--accent-primary);
  margin: 1.5rem 0;
  padding-left: 1.5rem;
}

.stop-sequence li {
  position: relative;
  margin-bottom: 1.5rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
}

.stop-sequence li::before {
  content: "";
  position: absolute;
  left: -1.95rem;
  top: 1.25rem;
  width: 12px;
  height: 12px;
  background-color: var(--accent-primary);
  border: 2px solid var(--bg-canvas);
  border-radius: 2px;
}

.comparison-table-wrap {
  overflow-x: auto;
  margin: 1.75rem 0;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  background: var(--bg-surface);
}

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

th, td {
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
}

th {
  font-family: "Arial Narrow", "Helvetica Neue", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  background-color: var(--bg-surface-hover);
  color: var(--text-primary);
}

.prep-checklist {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.prep-checklist li {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 1rem;
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
}

.check-box {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--accent-primary);
  border-radius: 2px;
  flex-shrink: 0;
  margin-top: 0.25rem;
}

/* Forms & Interactive Tools */
.form-panel {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 2rem;
}

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

.form-group label {
  display: block;
  font-family: "Arial Narrow", "Helvetica Neue", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: 0.4rem;
}

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

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

.output-preview {
  margin-top: 1.5rem;
  padding: 1.25rem;
  background-color: var(--bg-canvas);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  white-space: pre-wrap;
  font-family: monospace;
  font-size: 0.9rem;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1rem;
}

/* FAQ Accordion */
.faq-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  margin-bottom: 1rem;
  padding: 1.25rem 1.5rem;
}

.faq-item h3 {
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.faq-marker {
  color: var(--accent-primary);
  font-weight: 700;
}

/* Scroll Reveal */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  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: var(--bg-surface);
  border-top: 2px solid var(--text-primary);
  padding: 3.5rem 0 2.5rem;
  margin-top: 3rem;
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2rem;
  margin-bottom: 2.5rem;
}

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

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

.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Responsive Breakpoints */
@media (max-width: 1024px) {
  .hero-grid,
  .split-spread,
  .split-spread.reverse {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .split-spread.reverse .spread-text {
    order: 1;
  }
  .split-spread.reverse .spread-media {
    order: 2;
  }
}

@media (max-width: 768px) {
  .menu-dots-btn {
    display: inline-block;
  }
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--bg-surface);
    border-bottom: 2px solid var(--text-primary);
    flex-direction: column;
    align-items: flex-start;
    padding: 1.25rem 1.5rem;
    gap: 0.85rem;
    box-shadow: var(--shadow-elevation);
  }
  .main-nav.nav-open {
    display: flex;
  }
}

@media (max-width: 480px) {
  .section-block {
    padding: 2.5rem 0;
  }
  .btn-outline {
    width: 100%;
    text-align: center;
  }
}

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