:root {
  --color-brass: #B8860B;
  --color-brass-light: #D4AF37;
  --color-brass-dark: #8B6914;
  --color-walnut: #3D2B1F;
  --color-walnut-deep: #1A1612;
  --color-steel: #5C5C5C;
  --color-steel-light: #8A8A8A;
  --color-oxidized: #4A6741;
  --color-ivory: #F5F0E6;
  --color-ivory-muted: #E8E0D0;
  --color-charcoal: #2C2824;
  --color-error: #8B3A3A;
  --color-success: #3A5F4A;
  --font-serif: "Source Serif 4", Georgia, serif;
  --font-mono: "IBM Plex Mono", monospace;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --radius: 2px;
  --shadow-brass: 0 2px 12px rgba(184, 134, 11, 0.15);
  --transition-gear: 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 100%;
}

body {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--color-charcoal);
  background: var(--color-ivory);
  background-image:
    linear-gradient(90deg, rgba(184, 134, 11, 0.03) 1px, transparent 1px),
    linear-gradient(rgba(184, 134, 11, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-brass-dark);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover { color: var(--color-brass); }

h1, h2, h3, h4 {
  font-family: var(--font-mono);
  font-weight: 600;
  line-height: 1.25;
  color: var(--color-walnut);
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(1.75rem, 4vw, 2.75rem); }
h2 { font-size: clamp(1.35rem, 3vw, 1.85rem); }
h3 { font-size: 1.15rem; }

p { margin: 0 0 var(--space-sm); }

.container {
  width: min(1120px, 92vw);
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-sm);
  background: var(--color-walnut);
  color: var(--color-ivory);
  padding: var(--space-xs) var(--space-sm);
  z-index: 9999;
}

.skip-link:focus { top: var(--space-sm); }

/* Header */
.site-header {
  background: var(--color-walnut-deep);
  border-bottom: 1px solid var(--color-brass-dark);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) 0;
  gap: var(--space-md);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--color-brass-light);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.logo-mark { color: var(--color-brass-light); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 1px solid var(--color-brass-dark);
  padding: 8px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-brass-light);
}

.site-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a {
  color: var(--color-ivory-muted);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 0.35rem 0;
  border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--color-brass-light);
  border-bottom-color: var(--color-brass);
}

.nav-cta {
  border: 1px solid var(--color-brass) !important;
  padding: 0.35rem 0.75rem !important;
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-walnut-deep);
    border-bottom: 1px solid var(--color-brass-dark);
    padding: var(--space-sm);
    display: none;
  }

  .site-nav.is-open { display: block; }

  .site-nav ul {
    flex-direction: column;
    gap: 0;
  }

  .site-nav a {
    display: block;
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(184, 134, 11, 0.15);
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.75rem 1.5rem;
  border: 1px solid var(--color-brass);
  cursor: pointer;
  text-decoration: none;
  position: relative;
  overflow: hidden;
  transition: background var(--transition-gear), color var(--transition-gear);
}

.btn-primary {
  background: var(--color-brass-dark);
  color: var(--color-ivory);
}

.btn-primary:hover {
  background: var(--color-brass);
  color: var(--color-walnut-deep);
}

.btn-secondary {
  background: transparent;
  color: var(--color-walnut);
  border-color: var(--color-steel);
}

.btn-secondary:hover {
  border-color: var(--color-brass);
  color: var(--color-brass-dark);
}

.gear-btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 50%, rgba(212, 175, 55, 0.3), transparent 70%);
  opacity: 0;
  transition: opacity var(--transition-gear);
}

.gear-btn:active::before { opacity: 1; }

.gear-btn.is-engaged {
  animation: gear-lock 0.45s ease;
}

@keyframes gear-lock {
  0% { transform: rotate(0deg); }
  40% { transform: rotate(8deg); }
  100% { transform: rotate(0deg); }
}

/* Footer */
.site-footer {
  background: var(--color-walnut-deep);
  color: var(--color-ivory-muted);
  margin-top: var(--space-2xl);
  border-top: 2px solid var(--color-brass-dark);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  padding: var(--space-xl) 0 var(--space-lg);
}

.footer-name {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--color-brass-light);
  margin: 0 0 var(--space-xs);
}

.footer-tag { font-size: 0.9rem; margin: 0; }

.footer-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-brass);
  margin: 0 0 var(--space-sm);
}

.footer-contact address {
  font-style: normal;
  font-size: 0.9rem;
  line-height: 1.5;
  margin-bottom: var(--space-xs);
}

.footer-links ul,
.footer-legal ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-links a,
.footer-legal a,
.footer-contact a {
  color: var(--color-ivory-muted);
  text-decoration: none;
  font-size: 0.9rem;
}

.footer-links a:hover,
.footer-legal a:hover,
.footer-contact a:hover { color: var(--color-brass-light); }

.footer-bottom {
  border-top: 1px solid rgba(184, 134, 11, 0.2);
  padding: var(--space-md) 0;
  font-size: 0.8rem;
  font-family: var(--font-mono);
}

/* Hero */
.hero {
  position: relative;
  padding: var(--space-2xl) 0;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.hero-content { position: relative; z-index: 1; }

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-oxidized);
  margin-bottom: var(--space-sm);
}

.hero h1 { margin: 0 0 var(--space-md); }

.hero-lead {
  font-size: 1.15rem;
  color: var(--color-steel);
  max-width: 42ch;
  margin-bottom: var(--space-lg);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.hero-visual {
  position: relative;
}

.hero-visual img {
  border: 1px solid var(--color-brass-dark);
  box-shadow: var(--shadow-brass);
}

.hero-frame {
  position: absolute;
  inset: -12px;
  border: 1px solid rgba(184, 134, 11, 0.4);
  pointer-events: none;
}

.hero-stat-strip {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-ivory-muted);
}

.stat-item {
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.stat-item strong {
  display: block;
  font-size: 1.1rem;
  color: var(--color-brass-dark);
}

@media (max-width: 768px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
}

/* Sections */
.section {
  padding: var(--space-xl) 0;
}

.section-header {
  margin-bottom: var(--space-lg);
  max-width: 640px;
}

.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-brass);
  margin-bottom: var(--space-xs);
}

.section-dark {
  background: var(--color-walnut);
  color: var(--color-ivory-muted);
}

.section-dark h2,
.section-dark h3 { color: var(--color-brass-light); }

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-md);
}

.card {
  background: #fff;
  border: 1px solid var(--color-ivory-muted);
  box-shadow: 0 1px 4px rgba(44, 40, 36, 0.06);
  transition: box-shadow 0.25s, transform 0.25s;
}

.card:hover {
  box-shadow: var(--shadow-brass);
  transform: translateY(-2px);
}

.card-image {
  aspect-ratio: 16/10;
  object-fit: cover;
  width: 100%;
  border-bottom: 1px solid var(--color-ivory-muted);
}

.card-body { padding: var(--space-md); }

.card-meta {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-steel-light);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-xs);
}

.card h3 {
  margin: 0 0 var(--space-xs);
  font-size: 1rem;
}

.card p {
  font-size: 0.95rem;
  color: var(--color-steel);
  margin-bottom: var(--space-sm);
}

.card-link {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  text-decoration: none;
}

/* Page hero */
.page-hero {
  padding: var(--space-xl) 0 var(--space-lg);
  border-bottom: 1px solid var(--color-ivory-muted);
  background: linear-gradient(180deg, rgba(61, 43, 31, 0.04) 0%, transparent 100%);
}

.page-hero h1 { margin: 0 0 var(--space-sm); }

.page-hero-lead {
  font-size: 1.1rem;
  color: var(--color-steel);
  max-width: 58ch;
  margin: 0;
}

/* Testimonials */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-md);
}

.testimonial {
  background: #fff;
  border-left: 3px solid var(--color-brass);
  padding: var(--space-md);
  font-size: 0.95rem;
}

.testimonial cite {
  display: block;
  margin-top: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-style: normal;
  color: var(--color-steel-light);
}

.testimonial-long {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-lg);
  background: var(--color-walnut);
  color: var(--color-ivory-muted);
  border-left-color: var(--color-brass-light);
  padding: var(--space-lg);
}

.testimonial-long cite { color: var(--color-brass); }

@media (max-width: 640px) {
  .testimonial-long { grid-template-columns: 1fr; }
}

/* Forms */
.form-section { padding: var(--space-xl) 0; }

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
}

.form-group { margin-bottom: var(--space-md); }

.form-group label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.4rem;
  color: var(--color-walnut);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.65rem 0.75rem;
  font-family: var(--font-serif);
  font-size: 1rem;
  border: 1px solid var(--color-steel-light);
  background: #fff;
  color: var(--color-charcoal);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: 2px solid var(--color-brass);
  outline-offset: 1px;
}

.form-group textarea { min-height: 140px; resize: vertical; }

.form-error {
  color: var(--color-error);
  font-size: 0.85rem;
  margin-top: 0.3rem;
  display: none;
}

.form-group.is-invalid .form-error { display: block; }
.form-group.is-invalid input,
.form-group.is-invalid select,
.form-group.is-invalid textarea { border-color: var(--color-error); }

.form-status {
  padding: var(--space-sm) var(--space-md);
  margin-top: var(--space-md);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  display: none;
}

.form-status.is-success {
  display: block;
  background: rgba(58, 95, 74, 0.1);
  border: 1px solid var(--color-success);
  color: var(--color-success);
}

.form-status.is-error {
  display: block;
  background: rgba(139, 58, 58, 0.1);
  border: 1px solid var(--color-error);
  color: var(--color-error);
}

.contact-block address {
  font-style: normal;
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

@media (max-width: 768px) {
  .form-grid { grid-template-columns: 1fr; }
}

/* Legal */
.legal-content {
  padding: var(--space-xl) 0 var(--space-2xl);
  max-width: 720px;
}

.legal-content h2 {
  font-size: 1.2rem;
  margin: var(--space-lg) 0 var(--space-sm);
}

.legal-content h3 {
  font-size: 1rem;
  margin: var(--space-md) 0 var(--space-xs);
}

.legal-content ul, .legal-content ol {
  padding-left: 1.25rem;
  margin-bottom: var(--space-sm);
}

.legal-content table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin: var(--space-md) 0;
}

.legal-content th,
.legal-content td {
  border: 1px solid var(--color-ivory-muted);
  padding: 0.5rem 0.75rem;
  text-align: left;
}

.legal-content th {
  background: var(--color-walnut);
  color: var(--color-ivory);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

/* Cookie banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--color-walnut-deep);
  border-top: 2px solid var(--color-brass);
  padding: var(--space-md);
  z-index: 200;
  box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.3);
}

.cookie-banner[hidden] { display: none; }

.cookie-inner {
  width: min(1120px, 92vw);
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.cookie-inner p {
  margin: 0;
  color: var(--color-ivory-muted);
  font-size: 0.9rem;
  flex: 1;
  min-width: 240px;
}

.cookie-inner a { color: var(--color-brass-light); }

.cookie-actions {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* Service detail */
.service-hero {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-xl);
  padding: var(--space-xl) 0;
}

.service-hero img {
  border: 1px solid var(--color-brass-dark);
  box-shadow: var(--shadow-brass);
}

.service-details {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-md);
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--color-ivory-muted);
  border-bottom: 1px solid var(--color-ivory-muted);
  margin: var(--space-lg) 0;
}

.detail-item dt {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-brass);
  margin-bottom: 0.25rem;
}

.detail-item dd {
  margin: 0;
  font-size: 0.95rem;
}

.process-steps {
  counter-reset: step;
  list-style: none;
  padding: 0;
  margin: var(--space-lg) 0;
}

.process-steps li {
  counter-increment: step;
  padding-left: 3rem;
  position: relative;
  margin-bottom: var(--space-md);
}

.process-steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-brass);
  font-weight: 600;
}

@media (max-width: 768px) {
  .service-hero { grid-template-columns: 1fr; }
}

/* Blog */
.post-list .card { display: flex; flex-direction: column; }

.post-meta {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-steel-light);
}

.article-header {
  padding: var(--space-xl) 0 var(--space-lg);
  border-bottom: 1px solid var(--color-ivory-muted);
}

.article-cover {
  margin: var(--space-lg) 0;
  border: 1px solid var(--color-brass-dark);
}

.article-body {
  padding: var(--space-lg) 0 var(--space-2xl);
  max-width: 680px;
}

.article-body h2 {
  margin: var(--space-lg) 0 var(--space-sm);
  font-size: 1.25rem;
}

/* Methodology */
.method-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--color-brass-dark);
  border: 1px solid var(--color-brass-dark);
  margin: var(--space-lg) 0;
}

.method-cell {
  background: var(--color-ivory);
  padding: var(--space-md);
}

.method-cell h3 {
  font-size: 0.9rem;
  margin: 0 0 var(--space-xs);
}

.method-cell p {
  font-size: 0.9rem;
  margin: 0;
  color: var(--color-steel);
}

@media (max-width: 768px) {
  .method-grid { grid-template-columns: 1fr; }
}

/* Pricing */
.pricing-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-lg) 0;
}

.pricing-table th,
.pricing-table td {
  border: 1px solid var(--color-ivory-muted);
  padding: var(--space-sm) var(--space-md);
  text-align: left;
}

.pricing-table th {
  background: var(--color-walnut);
  color: var(--color-ivory);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
}

.pricing-note {
  background: rgba(74, 103, 65, 0.08);
  border-left: 3px solid var(--color-oxidized);
  padding: var(--space-md);
  margin: var(--space-lg) 0;
  font-size: 0.95rem;
}

/* 404 */
.error-page {
  text-align: center;
  padding: var(--space-2xl) 0;
}

.error-code {
  font-family: var(--font-mono);
  font-size: 4rem;
  color: var(--color-brass);
  margin: 0;
}

.error-page p {
  color: var(--color-steel);
  max-width: 40ch;
  margin-inline: auto var(--space-lg);
}

/* Chart accent decoration */
.chart-accent {
  height: 4px;
  background: linear-gradient(90deg, var(--color-brass-dark), var(--color-brass-light), var(--color-oxidized));
  margin: var(--space-md) 0;
}

.instrument-border {
  border: 1px solid var(--color-brass-dark);
  padding: var(--space-md);
  position: relative;
}

.instrument-border::before,
.instrument-border::after {
  content: "";
  position: absolute;
  width: 8px;
  height: 8px;
  border: 1px solid var(--color-brass);
}

.instrument-border::before { top: 4px; left: 4px; border-right: none; border-bottom: none; }
.instrument-border::after { bottom: 4px; right: 4px; border-left: none; border-top: none; }