:root {
  --bg-canvas: #1c1f24;
  --bg-surface: #292d32;
  --bg-surface-hover: #32373d;
  --text-primary: #e5e7eb;
  --text-muted: #9ca3af;
  --accent-primary: #14b8a6;
  --accent-secondary: #0d9488;
  --border-subtle: #3f444c;
  --charcoal-text: #111827;
  --ease-kinetic: cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-elevation: none;
  --glow-accent: none;
  --radius-card: 20px;
}

*, *::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: 1.6;
  overflow-wrap: anywhere;
  hyphens: auto;
}

h1, h2, h3, h4, .catalogue-label, .nav-link, .callout-badge {
  font-family: "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  line-height: 1.25;
  font-weight: 700;
}

h1 {
  font-size: clamp(1.85rem, 3.5vw, 2.75rem);
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

h2 {
  font-size: clamp(1.35rem, 2.5vw, 1.85rem);
  margin-bottom: 1rem;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 0.5rem;
}

h3 {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
  color: var(--accent-primary);
}

p {
  margin-bottom: 1rem;
  max-width: 70ch;
}

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: color 0.2s var(--ease-kinetic);
}

a:hover, a:focus-visible {
  color: #2dd4bf;
  text-decoration: underline;
}

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

/* Header: normal document flow, far-left logo above centered nav row */
.site-header {
  position: relative;
  background-color: var(--bg-canvas);
  border-bottom: 1px solid var(--border-subtle);
  padding: 1.25rem 0 0.75rem;
}

.header-top-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: "Arial Narrow", "Helvetica Neue", sans-serif;
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-primary);
  text-decoration: none;
}

.brand-logo:hover {
  text-decoration: none;
  color: var(--accent-primary);
}

.brand-mark {
  width: 14px;
  height: 14px;
  background-color: var(--accent-primary);
  border-radius: 4px;
  display: inline-block;
}

.mobile-menu-toggle {
  display: none;
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 0.35rem 0.75rem;
  font-size: 1.35rem;
  line-height: 1;
  cursor: pointer;
}

.site-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.75rem;
  padding-top: 0.5rem;
  border-top: 1px solid rgba(63, 68, 76, 0.45);
}

.nav-link {
  font-size: 0.88rem;
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.25rem 0;
}

.nav-link:hover, .nav-link[aria-current="page"] {
  color: var(--accent-primary);
  text-decoration: none;
}

/* Dot Grid Background Pattern */
.dot-grid-bg {
  background-image: radial-gradient(rgba(229, 231, 235, 0.14) 1px, transparent 1px);
  background-size: 18px 18px;
}

/* Hero Section */
.hero-band {
  padding: 2.5rem 0 1.75rem;
  border-bottom: 1px solid var(--border-subtle);
}

.hero-band-inner {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.catalogue-stamp {
  font-family: "Arial Narrow", "Helvetica Neue", sans-serif;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--accent-primary);
}

.hero-actions {
  margin-top: 0.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

/* Pill Buttons */
.btn-pill {
  display: inline-block;
  background-color: var(--accent-primary);
  color: var(--charcoal-text);
  font-family: "Arial Narrow", "Helvetica Neue", sans-serif;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.9rem;
  padding: 0.65rem 1.4rem;
  border-radius: 9999px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.2s var(--ease-kinetic), background-color 0.2s ease;
}

.btn-pill:hover, .btn-pill:focus-visible {
  background-color: #2dd4bf;
  color: var(--charcoal-text);
  text-decoration: none;
  transform: translateY(-2px);
}

.btn-pill-secondary {
  background-color: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
}

.btn-pill-secondary:hover, .btn-pill-secondary:focus-visible {
  background-color: var(--bg-surface-hover);
  color: var(--accent-primary);
}

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

.section-header {
  margin-bottom: 1.75rem;
}

/* Cards & Panels: 20px corners, flat 1px border, no shadows */
.ref-card, .lead-ref-block, .panel-box {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: 1.5rem;
  transition: border-color 0.25s var(--ease-kinetic), transform 0.25s var(--ease-kinetic);
}

.ref-card:hover {
  border-color: var(--accent-primary);
  transform: translateY(-3px);
}

.lead-ref-block {
  margin-bottom: 2rem;
}

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

/* Visual Figures & Callouts */
.ref-figure {
  position: relative;
  margin-bottom: 1.25rem;
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  background-color: #141619;
}

.ref-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-card);
}

.aspect-16-9 img {
  aspect-ratio: 16 / 9;
}

.aspect-4-3 img {
  aspect-ratio: 4 / 3;
}

.callout-overlay {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background-color: rgba(28, 31, 36, 0.92);
  border-top: 1px solid var(--border-subtle);
}

.callout-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  background-color: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--accent-primary);
  border-radius: 999px;
  padding: 0.2rem 0.65rem;
}

.callout-num {
  background-color: var(--accent-primary);
  color: var(--charcoal-text);
  font-weight: 700;
  border-radius: 50%;
  width: 18px;
  height: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
}

/* Equipment Definition Lists */
.equip-dl {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.65rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.92rem;
}

.equip-dl div {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 0.75rem;
}

.equip-dl dt {
  font-family: "Arial Narrow", "Helvetica Neue", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  font-weight: 700;
}

.equip-dl dd {
  color: var(--text-primary);
}

/* Waveform Caption Strips */
.waveform-strip {
  background-color: #16181c;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: 1rem 1.25rem;
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  font-size: 0.88rem;
}

.waveform-strip-meta {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
  color: var(--text-muted);
}

.waveform-strip-meta strong {
  color: var(--accent-primary);
  font-family: "Arial Narrow", "Helvetica Neue", sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* Distinction Box (What photo shows vs What gear does) */
.distinction-note {
  background-color: rgba(20, 184, 166, 0.08);
  border: 1px solid var(--accent-primary);
  border-radius: var(--radius-card);
  padding: 1rem 1.25rem;
  margin: 1rem 0;
  font-size: 0.92rem;
}

.distinction-note strong {
  font-family: "Arial Narrow", "Helvetica Neue", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-primary);
  display: block;
  margin-bottom: 0.25rem;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--bg-surface);
  font-size: 0.92rem;
}

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

th {
  font-family: "Arial Narrow", "Helvetica Neue", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-primary);
  background-color: #202429;
}

/* Long-form prose container */
.prose-block {
  max-width: 72ch;
  margin: 0 auto;
}

.prose-block h2, .prose-block h3 {
  margin-top: 2rem;
}

.prose-block ul, .prose-block ol {
  margin: 0 0 1.25rem 1.5rem;
}

.prose-block li {
  margin-bottom: 0.5rem;
}

/* Forms */
.form-grid {
  display: grid;
  gap: 1.25rem;
  max-width: 640px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-family: "Arial Narrow", "Helvetica Neue", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.form-control {
  background-color: var(--bg-canvas);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 0.75rem 1rem;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
}

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

.output-preview {
  background-color: #141619;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: 1.25rem;
  font-family: monospace;
  font-size: 0.85rem;
  white-space: pre-wrap;
  color: var(--text-primary);
  margin-top: 1rem;
}

/* Scroll reveal */
.reveal-item {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s var(--ease-kinetic), transform 0.6s var(--ease-kinetic);
}

.js-enabled .reveal-item {
  opacity: 0;
  transform: translateY(16px);
}

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

/* Footer */
.site-footer {
  background-color: #16181c;
  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;
  display: flex;
  flex-direction: column;
  gap: 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;
  font-size: 0.84rem;
}

/* Responsive Breakpoints */
@media (max-width: 767px) {
  .mobile-menu-toggle {
    display: inline-block;
  }
  .site-nav {
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-card);
    margin-top: 0.5rem;
  }
  .site-nav.nav-open {
    display: flex;
  }
  .equip-dl div {
    grid-template-columns: 1fr;
    gap: 0.2rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }
  .ref-card, .lead-ref-block, .panel-box {
    padding: 1.15rem;
  }
}

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