:root {
  /* High-Tech Obsidian Canvas */
  --navy-dark: #060a16;
  --navy-slate: #0b1329;
  --navy-muted: #131f3d;
  
  /* Algorithmic Accents: Electric Cobalt & Cyan */
  --accent-blue: #2563eb;
  --accent-blue-hover: #1d4ed8;
  --accent-cyan: #38bdf8;
  --accent-glow: rgba(56, 189, 248, 0.15);
  
  /* Precision Monochromes */
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-light: #f8fafc;
  
  --bg-page: #f8fafc;
  --bg-surface: #ffffff;
  --border-light: #e2e8f0;
  --border-tech: rgba(255, 255, 255, 0.1);
  
  /* Modern Engineered Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Code", "Roboto Mono", Menlo, monospace;
  
  --max-width: 1120px;
  --content-width: 780px;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-page);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* Navigation */
.header-nav {
  position: sticky;
  top: 0;
  background: rgba(6, 10, 22, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-tech);
  z-index: 100;
  padding: 1.25rem 2rem;
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Modern Engineered Wordmark with Telemetry Dot */
.brand-logo {
  font-family: var(--font-sans);
  font-size: 1.05rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #ffffff;
  text-decoration: none;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.brand-logo::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan);
}

.brand-logo span {
  color: var(--accent-cyan);
  font-weight: 400;
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
  list-style: none;
}

.nav-links a {
  color: #94a3b8;
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: #ffffff;
}

.nav-btn {
  background: transparent;
  border: 1px solid rgba(56, 189, 248, 0.4);
  color: #ffffff !important;
  padding: 0.45rem 1rem;
  border-radius: 4px;
  font-size: 0.8125rem !important;
  font-weight: 600;
  letter-spacing: 0.05em;
  transition: all 0.2s ease;
}

.nav-btn:hover {
  background: var(--accent-blue);
  border-color: var(--accent-blue);
}

/* Layout Utilities */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.content-container {
  max-width: var(--content-width);
  margin: 0 auto;
}

/* High-Impact Modern Headlines */
h1, h2, h3, h4 {
  font-family: var(--font-sans);
  color: var(--navy-dark);
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.025em;
}

p {
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
  font-size: 1.0625rem;
}

/* Hero Section */
.hero {
  background-color: var(--navy-dark);
  background-image: url("hero-bg.svg");
  background-repeat: no-repeat;
  background-position: center top;
  background-size: cover;
  color: #ffffff;
  padding: 6.5rem 0 5.5rem;
  border-bottom: 1px solid var(--border-tech);
  position: relative;
}

.hero-tagline {
  font-family: var(--font-mono);
  color: var(--accent-cyan);
  text-transform: uppercase;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  font-weight: 600;
  margin-bottom: 1.25rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.hero h1 {
  font-size: 3.5rem;
  color: #ffffff;
  line-height: 1.1;
  letter-spacing: -0.035em;
  max-width: 880px;
  margin-bottom: 1.75rem;
  font-weight: 800;
}

.hero-sub {
  font-size: 1.2rem;
  color: #94a3b8;
  max-width: 760px;
  line-height: 1.65;
  margin-bottom: 2.5rem;
  font-weight: 400;
}

.hero-actions {
  display: flex;
  gap: 1.25rem;
  align-items: center;
}

.btn-primary {
  background: var(--accent-blue);
  color: #ffffff;
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 0.85rem 1.75rem;
  border-radius: 4px;
  text-decoration: none;
  display: inline-block;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
  transition: all 0.2s ease;
}

.btn-primary:hover {
  background: var(--accent-blue-hover);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.5);
  transform: translateY(-1px);
}

.btn-secondary {
  color: #cbd5e1;
  border: 1px solid #334155;
  font-size: 0.9375rem;
  font-weight: 500;
  padding: 0.85rem 1.75rem;
  border-radius: 4px;
  text-decoration: none;
  background: rgba(255, 255, 255, 0.02);
  transition: all 0.2s ease;
}

.btn-secondary:hover {
  border-color: #64748b;
  color: #ffffff;
}

/* Strategic Tension Strip: Obsidian Canvas with High-Contrast Text */
.strategic-tension {
  background: #091024;
  border-top: 1px solid var(--border-tech);
  border-bottom: 1px solid var(--border-tech);
  padding: 3rem 0;
}

.tension-box {
  display: flex;
  gap: 2.5rem;
  align-items: flex-start;
}

.tension-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent-cyan);
  font-weight: 700;
  white-space: nowrap;
  padding-top: 0.25rem;
}

.tension-quote {
  font-family: var(--font-sans);
  font-size: 1.35rem;
  color: #e2e8f0;
  line-height: 1.5;
  font-weight: 400;
  letter-spacing: -0.01em;
}

/* Cards & Sections */
.section-padding {
  padding: 5rem 0;
}

.section-head {
  margin-bottom: 3rem;
}

.section-head .eyebrow {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-size: 0.75rem;
  color: var(--accent-blue);
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.section-head h2 {
  font-size: 2.35rem;
  letter-spacing: -0.025em;
  margin-bottom: 0.75rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 2.25rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.04);
}

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

/* Architecture Graphic Block */
.arch-diagram {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 2.5rem 2rem;
  margin: 2.5rem 0;
}

.arch-header {
  background: var(--navy-dark);
  color: #ffffff;
  text-align: center;
  padding: 1.25rem;
  border-radius: 6px;
  margin-bottom: 1.5rem;
  border-left: 4px solid var(--accent-blue);
}

.arch-header strong {
  display: block;
  font-size: 1.1rem;
  letter-spacing: 0.05em;
  color: #ffffff;
}

.arch-header span {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-cyan);
}

.arch-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.arch-column {
  border: 1px solid var(--border-light);
  background: var(--bg-page);
  padding: 1.5rem;
  border-radius: 6px;
}

.arch-column h4 {
  font-size: 1.05rem;
  margin-bottom: 0.75rem;
  color: var(--navy-dark);
}

.arch-column ul {
  list-style: none;
  font-size: 0.925rem;
  color: var(--text-secondary);
}

.arch-column ul li {
  margin-bottom: 0.5rem;
  padding-left: 1.25rem;
  position: relative;
}

.arch-column ul li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--accent-blue);
  font-weight: bold;
}

/* Perspectives Feed */
.perspective-entry {
  display: flex;
  gap: 3rem;
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--border-light);
  text-decoration: none;
  color: inherit;
}

.perspective-meta {
  flex: 0 0 170px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-blue);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  line-height: 1.6;
}

.perspective-content h3 {
  font-size: 1.65rem;
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
  transition: color 0.2s ease;
}

.perspective-entry:hover .perspective-content h3 {
  color: var(--accent-blue);
}

.perspective-content p {
  margin-bottom: 0.75rem;
  color: var(--text-secondary);
}

.read-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent-blue);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

/* Article Styles */
.article-header {
  padding: 4.5rem 0 3rem;
  border-bottom: 1px solid var(--border-light);
  margin-bottom: 3.5rem;
}

.article-header .eyebrow {
  font-family: var(--font-mono);
  color: var(--accent-blue);
  text-transform: uppercase;
  font-size: 0.78rem;
  letter-spacing: 0.15em;
  font-weight: 600;
  margin-bottom: 1rem;
}

.article-header h1 {
  font-size: 2.85rem;
  margin-bottom: 1.25rem;
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.article-header .subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 2rem;
}

.author-block {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.author-block strong {
  color: var(--navy-dark);
}

.article-body h2 {
  font-size: 1.85rem;
  margin: 3rem 0 1.25rem;
  letter-spacing: -0.02em;
}

.article-body h3 {
  font-size: 1.35rem;
  margin: 2rem 0 0.75rem;
  letter-spacing: -0.01em;
}

.callout-quote {
  border-left: 4px solid var(--accent-blue);
  background: #f1f5f9;
  padding: 1.75rem;
  margin: 2.5rem 0;
  border-radius: 0 6px 6px 0;
}

.callout-quote p {
  font-size: 1.2rem;
  color: var(--navy-slate);
  margin-bottom: 0;
  line-height: 1.55;
}

/* Audit / Inquiry Form Box */
.audit-cta-box {
  background: var(--navy-dark);
  color: #ffffff;
  padding: 3rem;
  border-radius: 8px;
  margin: 4rem 0;
  border: 1px solid var(--border-tech);
  box-shadow: 0 20px 30px -10px rgba(0, 0, 0, 0.4);
}

.audit-cta-box h3 {
  color: #ffffff;
  font-size: 1.85rem;
  margin-bottom: 1rem;
}

.audit-cta-box p {
  color: #cbd5e1;
  max-width: 640px;
  margin-bottom: 2rem;
}

.inquiry-form {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.inquiry-form input, .inquiry-form textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  border-radius: 4px;
  border: 1px solid #334155;
  background: #0f172a;
  color: #ffffff;
  font-size: 0.95rem;
}

.inquiry-form input:focus, .inquiry-form textarea:focus {
  outline: none;
  border-color: var(--accent-blue);
}

.inquiry-form textarea {
  grid-column: span 2;
  resize: vertical;
  min-height: 100px;
}

.inquiry-form button {
  grid-column: span 2;
  background: var(--accent-blue);
  color: #ffffff;
  border: none;
  font-weight: 700;
  padding: 1rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.2s ease;
}

.inquiry-form button:hover {
  background: var(--accent-blue-hover);
}

/* Footer */
footer {
  background: var(--navy-dark);
  color: #64748b;
  padding: 4rem 0 3rem;
  border-top: 1px solid var(--border-tech);
  font-size: 0.875rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

@media (max-width: 860px) {
  .hero h1 { font-size: 2.35rem; }
  .grid-3 { grid-template-columns: 1fr; }
  .arch-grid { grid-template-columns: 1fr; }
  .tension-box { flex-direction: column; gap: 0.75rem; }
  .perspective-entry { flex-direction: column; gap: 0.5rem; }
  .inquiry-form { grid-template-columns: 1fr; }
  .inquiry-form textarea, .inquiry-form button { grid-column: span 1; }
  .footer-inner { flex-direction: column; gap: 1.5rem; text-align: center; }
}