:root {
  --bg-canvas: #0b0b0d;
  --bg-surface: #16161a;
  --bg-surface-hover: #222228;
  --text-primary: #f0f2f5;
  --text-muted: #c0c4cc;
  --text-dim: #71757e;
  --accent-primary: #dc2626;
  --accent-glow: #b91c1c;
  --border-subtle: #2b2b36;
  --border-silver: #4a4a58;
  --shadow-offset: 4px 4px 0px #dc2626;
  --shadow-dark: 4px 4px 0px #000000;
  --ease-kinetic: cubic-bezier(0.16, 1, 0.3, 1);
  --max-w: 1200px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  border-radius: 0 !important;
}

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

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  background-color: var(--bg-canvas);
  color: var(--text-muted);
  overflow-wrap: anywhere;
  hyphens: auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1, h2, h3, h4, .brand-text, .section-tag, .btn, th {
  font-family: "Arial Narrow", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  color: var(--text-primary);
}

h1 { font-size: clamp(2rem, 4.5vw, 3.25rem); line-height: 1.1; margin-bottom: 1.25rem; }
h2 { font-size: clamp(1.4rem, 2.5vw, 2rem); line-height: 1.2; margin-bottom: 1rem; border-left: 4px solid var(--accent-primary); padding-left: 0.75rem; }
h3 { font-size: 1.2rem; line-height: 1.3; margin-bottom: 0.5rem; color: #fff; }
p { margin-bottom: 1.2rem; max-width: 72ch; }
p:last-child { margin-bottom: 0; }
a { color: var(--text-primary); text-decoration: none; transition: color 0.15s ease; }
a:hover { color: var(--accent-primary); }

.crimson-band {
  background: var(--accent-primary);
  color: #fff;
  padding: 0.5rem 1rem;
  font-weight: bold;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  display: inline-block;
  margin-bottom: 1.5rem;
}

.site-header {
  position: static;
  width: 100%;
  background-color: var(--bg-canvas);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 1000;
}

.header-container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-align: left;
}

.brand-mark {
  width: 18px;
  height: 18px;
  background-color: var(--accent-primary);
  display: inline-block;
  box-shadow: 2px 2px 0px #fff;
}

.brand-title {
  font-size: 1.15rem;
  letter-spacing: 0.1em;
  color: #ffffff;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.desktop-nav a {
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  position: relative;
  padding-bottom: 4px;
}

.desktop-nav a.active,
.desktop-nav a:hover {
  color: #fff;
  border-bottom: 2px solid var(--accent-primary);
}

.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  font-size: 1.5rem;
  line-height: 1;
  padding: 0.25rem 0.6rem;
  cursor: pointer;
}

.mobile-nav {
  display: none;
  background: var(--bg-surface);
  border-bottom: 2px solid var(--accent-primary);
  padding: 1rem 1.5rem;
  flex-direction: column;
  gap: 1rem;
}

.mobile-nav.open { display: flex; }
.mobile-nav a {
  font-size: 1rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-primary);
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.btn {
  display: inline-block;
  padding: 0.85rem 1.75rem;
  background: var(--accent-primary);
  color: #ffffff;
  border: 1px solid var(--accent-primary);
  box-shadow: var(--shadow-offset);
  cursor: pointer;
  font-size: 0.95rem;
  transition: transform 0.1s ease, box-shadow 0.1s ease;
  text-align: center;
}

.btn:hover {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0px #dc2626;
  color: #fff;
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-silver);
  box-shadow: 4px 4px 0px var(--border-silver);
}
.btn-secondary:hover {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0px var(--border-silver);
  background: var(--bg-surface);
}

main { flex: 1; }

.section-block {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 4rem 1.5rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
}

.hero-lead {
  font-size: 1.15rem;
  color: var(--text-primary);
  margin-bottom: 2rem;
  border-left: 2px solid var(--border-silver);
  padding-left: 1rem;
}

.schematic-frame {
  border: 1px solid var(--border-silver);
  background: var(--bg-surface);
  padding: 1rem;
  box-shadow: 6px 6px 0px #000;
}

.schematic-frame img {
  width: 100%;
  height: auto;
  aspect-ratio: 4/3;
  object-fit: cover;
  display: block;
  border: 1px solid var(--border-subtle);
}

.schematic-caption {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  margin-top: 0.75rem;
  display: flex;
  justify-content: space-between;
}

.two-column-matrix {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.spec-row {
  border-bottom: 1px solid var(--border-subtle);
  padding: 1.5rem 0;
  display: grid;
  grid-template-columns: 40px 1fr auto;
  align-items: center;
  gap: 1.5rem;
  transition: background-color 0.15s ease;
}

.spec-row:hover {
  background-color: rgba(255, 255, 255, 0.02);
}

.spec-index {
  font-family: "Arial Narrow", sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent-primary);
}

.spec-content h3 { margin: 0 0 0.25rem 0; }
.spec-content p { font-size: 0.9rem; margin: 0; color: var(--text-muted); }
.spec-value {
  text-align: right;
  font-family: "Arial Narrow", monospace;
  font-size: 1rem;
  font-weight: bold;
  color: #fff;
  border: 1px solid var(--border-subtle);
  padding: 0.25rem 0.5rem;
  background: #000;
}

.table-wrapper {
  overflow-x: auto;
  margin: 2rem 0;
  border: 1px solid var(--border-subtle);
}

.strip-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

.strip-table th {
  background: var(--bg-surface);
  color: #fff;
  padding: 1rem;
  border-bottom: 2px solid var(--accent-primary);
}

.strip-table td {
  padding: 1rem;
  border-bottom: 1px solid var(--border-subtle);
}

.strip-table tr:nth-child(even) td {
  background: rgba(22, 22, 26, 0.4);
}

.strip-table tr:hover td {
  background: rgba(220, 38, 38, 0.08);
}

.simulator-box {
  background: var(--bg-surface);
  border: 2px solid var(--border-silver);
  padding: 2rem;
  box-shadow: 8px 8px 0px #000;
  margin: 3rem 0;
}

.sim-controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

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

.sim-group label {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #fff;
}

.sim-select, .sim-slider {
  background: #000;
  border: 1px solid var(--border-silver);
  color: #fff;
  padding: 0.65rem;
  width: 100%;
}

.sim-slider {
  accent-color: var(--accent-primary);
  cursor: pointer;
  padding: 0;
}

.sim-output-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-subtle);
}

.metric-gauge {
  background: #0b0b0d;
  padding: 1.5rem;
  border-left: 3px solid var(--accent-primary);
}

.metric-gauge h4 {
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
  color: var(--text-dim);
}

.metric-number {
  font-family: "Arial Narrow", monospace;
  font-size: 2.2rem;
  font-weight: 700;
  color: #fff;
  line-height: 1;
}

.metric-desc {
  font-size: 0.85rem;
  margin-top: 0.5rem;
  color: var(--text-muted);
}

.article-content {
  max-width: 780px;
  margin: 0 auto;
}

.article-content p {
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.article-content ul, .article-content ol {
  margin: 1.5rem 0 1.5rem 2rem;
}

.article-content li {
  margin-bottom: 0.75rem;
}

.faq-item {
  border-bottom: 1px solid var(--border-subtle);
  padding: 1.5rem 0;
}

.faq-item:first-child { border-top: 1px solid var(--border-subtle); }
.faq-question {
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-question h3 { margin: 0; font-size: 1.1rem; }
.faq-toggle { font-size: 1.5rem; color: var(--accent-primary); font-family: monospace; }
.faq-answer {
  display: none;
  padding-top: 1rem;
  font-size: 0.95rem;
  color: var(--text-muted);
}
.faq-item.active .faq-answer { display: block; }
.faq-item.active .faq-toggle { transform: rotate(45deg); }

.contact-form {
  background: var(--bg-surface);
  border: 1px solid var(--border-silver);
  padding: 2.5rem;
  box-shadow: 6px 6px 0px #000;
  max-width: 650px;
}

.form-group {
  margin-bottom: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: bold;
  text-transform: uppercase;
  color: #fff;
}

.form-input, .form-textarea {
  background: #000;
  border: 1px solid var(--border-silver);
  padding: 0.75rem;
  color: #fff;
  font-family: inherit;
  font-size: 1rem;
}

.form-input:focus, .form-textarea:focus {
  outline: 1px solid var(--accent-primary);
  border-color: var(--accent-primary);
}

.site-footer {
  background: #070709;
  border-top: 2px solid var(--border-subtle);
  padding: 4rem 1.5rem 2rem 1.5rem;
  margin-top: 5rem;
}

.footer-container {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--border-subtle);
}

.footer-brand h4 {
  font-size: 1.2rem;
  color: #fff;
  margin-bottom: 0.75rem;
}

.footer-brand p {
  font-size: 0.85rem;
  color: var(--text-dim);
  line-height: 1.6;
}

.footer-col h5 {
  font-size: 0.95rem;
  color: #fff;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--accent-primary);
  padding-bottom: 0.25rem;
  display: inline-block;
}

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

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

.footer-links a {
  font-size: 0.85rem;
  color: var(--text-muted);
}
.footer-links a:hover { color: var(--accent-primary); }

.footer-bottom {
  max-width: var(--max-w);
  margin: 2rem auto 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-dim);
}

@media (max-width: 768px) {
  .desktop-nav { display: none; }
  .menu-toggle { display: block; }
  .hero-grid, .two-column-matrix { grid-template-columns: 1fr; }
  .footer-container { grid-template-columns: 1fr; gap: 2rem; }
  .sim-output-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
  .spec-row { grid-template-columns: 30px 1fr; gap: 1rem; }
  .spec-value { grid-column: span 2; text-align: left; }
}

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