:root {
  --primary: #000000;
  --secondary: #1a1a1a;
  --accent: #c5a059; /* Premium gold accent */
  --accent-hover: #b08d4b;
  --cta: #ff6a00;
  --cta-hover: #e85f00;
  --text-main: #333333;
  --text-muted: #666666;
  --bg-main: #ffffff;
  --bg-alt: #f8f9fa;
  --bg-dark: #111111;
  --border-light: #eaeaea;
  --border-dark: #333333;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --container-width: 1280px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: var(--text-main);
  background-color: var(--bg-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

ul {
  list-style: none;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--primary);
  line-height: 1.2;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.text-accent { color: var(--accent); }
.text-muted { color: var(--text-muted); }

.prose {
  max-width: 78ch;
}

.prose h2 {
  margin-top: 28px;
  margin-bottom: 12px;
  font-size: 24px;
  letter-spacing: 0.03em;
}

.prose p {
  margin-bottom: 14px;
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.75;
  text-transform: none;
  letter-spacing: 0;
  font-weight: 450;
}

.prose a {
  color: var(--primary);
  text-decoration: underline;
  text-decoration-color: rgba(0,0,0,0.22);
  text-underline-offset: 3px;
}

.article-figure {
  margin: 16px 0 18px 0;
  border: 1px solid var(--border-light);
  background: #ffffff;
}

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

.article-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.article-row {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 14px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-light);
  align-items: center;
}

.article-thumb img {
  width: 72px;
  height: 54px;
  object-fit: cover;
  border: 1px solid var(--border-light);
  display: block;
  background: #ffffff;
}

.article-title-link {
  text-transform: none;
  letter-spacing: 0;
  font-weight: 650;
  display: inline-block;
}

.prose-table {
  width: 100%;
  border-collapse: collapse;
  margin: 14px 0 18px 0;
  font-size: 14px;
}

.prose-table th,
.prose-table td {
  border: 1px solid var(--border-light);
  padding: 10px 12px;
  vertical-align: top;
  text-transform: none;
  letter-spacing: 0;
  font-weight: 450;
}

.prose-table th {
  background: var(--bg-alt);
  color: var(--primary);
  font-weight: 750;
}

.list {
  display: grid;
  gap: 10px;
  margin-top: 10px;
}

.list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  color: var(--text-main);
  font-size: 15px;
  text-transform: none;
  letter-spacing: 0;
  font-weight: 450;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  margin-top: 7px;
  background: var(--accent);
  flex: 0 0 auto;
}

.faq {
  display: grid;
  gap: 12px;
  margin-top: 12px;
}

.faq-item {
  border: 1px solid var(--border-light);
  background: #ffffff;
}

.faq-item summary {
  cursor: pointer;
  padding: 14px 16px;
  font-weight: 700;
  text-transform: none;
  letter-spacing: 0;
  color: var(--primary);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item[open] summary {
  border-bottom: 1px solid var(--border-light);
}

.faq-body {
  padding: 0 16px 14px 16px;
}

.faq-body p {
  margin: 0;
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.75;
  text-transform: none;
  letter-spacing: 0;
  font-weight: 450;
}

/* Layout */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
}

.section-dark {
  background-color: var(--primary);
  color: #ffffff;
}

.section-dark h2, .section-dark h3 {
  color: #ffffff;
}

.section-alt {
  background-color: var(--bg-alt);
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-light);
  transition: var(--transition);
}

.header.scrolled {
  box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo {
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--primary);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent);
  transition: var(--transition);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  gap: 16px;
  align-items: center;
}

.menu-toggle {
  display: none;
  font-size: 24px;
  cursor: pointer;
  background: none;
  border: none;
  color: var(--primary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--accent);
  color: #ffffff;
}

.btn-outline {
  background-color: transparent;
  border-color: var(--primary);
  color: var(--primary);
}

.btn-outline:hover {
  background-color: var(--primary);
  color: #ffffff;
}

.btn-accent {
  background-color: var(--accent);
  color: #ffffff;
}

.btn-accent:hover {
  background-color: var(--primary);
}

.btn-dark-outline {
  background-color: transparent;
  border-color: #ffffff;
  color: #ffffff;
}

.btn-dark-outline:hover {
  background-color: #ffffff;
  color: var(--primary);
}

/* Hero Section */
.hero {
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  position: relative;
  background-color: var(--primary);
  overflow: hidden;
  padding-top: 80px;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.6;
}

.hero-content {
  position: relative;
  z-index: 10;
  max-width: 800px;
  color: #ffffff;
}

.hero-tag {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 16px;
  display: block;
}

.hero-title {
  font-size: clamp(40px, 5vw, 72px);
  margin-bottom: 24px;
  color: #ffffff;
  line-height: 1.1;
}

.hero-desc {
  font-size: 18px;
  color: #cccccc;
  margin-bottom: 40px;
  max-width: 600px;
  font-weight: 400;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* Feature Grid */
.grid {
  display: grid;
  gap: 24px;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.feature-card {
  padding: 40px 32px;
  background-color: var(--bg-alt);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.05);
  border-color: var(--accent);
}

.feature-icon {
  font-size: 32px;
  color: var(--accent);
  margin-bottom: 24px;
}

.feature-card h3 {
  font-size: 18px;
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 15px;
}

/* Product Cards */
.product-card {
  background: #ffffff;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border-light);
  transition: var(--transition);
}

.product-card:hover {
  border-color: var(--primary);
}

.product-img-wrap {
  position: relative;
  padding: 40px;
  background-color: #fcfcfc;
  display: flex;
  justify-content: center;
  align-items: center;
  aspect-ratio: 4/5;
}

.product-img-wrap img {
  max-height: 100%;
  transition: transform 0.5s ease;
}

.product-card:hover .product-img-wrap img {
  transform: scale(1.05);
}

.product-info {
  padding: 24px;
}

.product-cat {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 8px;
  display: block;
}

.product-title {
  font-size: 20px;
  margin-bottom: 12px;
}

.product-specs {
  display: flex;
  gap: 16px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.product-specs span {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* Split Section */
.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
}

.split-content {
  padding: 80px;
}

.split-img {
  height: 100%;
  min-height: 500px;
  background-size: cover;
  background-position: center;
}

.split-reverse .split-content {
  order: 2;
}

.split-reverse .split-img {
  order: 1;
}

/* Section Headers */
.section-header {
  margin-bottom: 48px;
  max-width: 700px;
}

.section-header.text-center {
  margin: 0 auto 48px auto;
  text-align: center;
}

.section-title {
  font-size: clamp(32px, 4vw, 48px);
  margin-bottom: 16px;
}

.section-desc {
  font-size: 18px;
  color: var(--text-muted);
}

.section-dark .section-desc {
  color: #aaaaaa;
}

/* Forms */
.form-group {
  margin-bottom: 24px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
  color: var(--primary);
}

.form-control {
  width: 100%;
  padding: 16px;
  border: 1px solid var(--border-light);
  background-color: var(--bg-alt);
  font-family: var(--font-sans);
  font-size: 15px;
  color: var(--text-main);
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  background-color: #ffffff;
}

textarea.form-control {
  min-height: 120px;
  resize: vertical;
}

/* Footer */
.footer {
  background-color: var(--primary);
  color: #ffffff;
  padding: 80px 0 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 64px;
}

.footer-col h4 {
  color: #ffffff;
  font-size: 14px;
  margin-bottom: 24px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  color: #999999;
  font-size: 14px;
}

.footer-links a:hover {
  color: var(--accent);
}

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid var(--border-dark);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #666666;
  font-size: 13px;
}

/* Page Header (Subpages) */
.page-header {
  padding: 160px 0 80px;
  background-color: var(--bg-alt);
  text-align: center;
  border-bottom: 1px solid var(--border-light);
}

.page-title {
  font-size: clamp(36px, 4vw, 56px);
  margin-bottom: 16px;
}

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.breadcrumb a {
  color: var(--primary);
  font-weight: 600;
}

.breadcrumb a:hover {
  color: var(--accent);
}

/* Customization Matrix */
.matrix-row {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 48px;
  padding: 48px 0;
  border-bottom: 1px solid var(--border-light);
}

.matrix-row:last-child {
  border-bottom: none;
}

.matrix-info h3 {
  font-size: 24px;
  margin-bottom: 16px;
}

.matrix-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.option-item {
  display: flex;
  gap: 16px;
}

.option-icon {
  width: 48px;
  height: 48px;
  background: var(--bg-alt);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
}

/* Responsive */
@media (max-width: 1024px) {
  .split-section {
    grid-template-columns: 1fr;
  }
  .split-content {
    padding: 64px 24px;
  }
  .split-img {
    min-height: 400px;
  }
  .split-reverse .split-content {
    order: 1;
  }
  .split-reverse .split-img {
    order: 2;
  }
  .matrix-row {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none; /* Mobile menu handled by JS */
  }
  .menu-toggle {
    display: block;
  }
  .nav-actions .btn {
    display: none;
  }
  .grid-3, .grid-4 {
    grid-template-columns: 1fr 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .matrix-options {
    grid-template-columns: 1fr;
  }
  .hero-actions {
    flex-direction: column;
  }
  .btn {
    width: 100%;
  }
}

/* Mobile Menu Active State */
.nav-links.mobile-active {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 80px;
  left: 0;
  width: 100%;
  background: #ffffff;
  padding: 32px 24px;
  box-shadow: 0 10px 20px rgba(0,0,0,0.1);
  border-bottom: 1px solid var(--border-light);
}

/* Notification Toast */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--primary);
  color: white;
  padding: 16px 24px;
  border-radius: 4px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  transform: translateY(100px);
  opacity: 0;
  transition: var(--transition);
  z-index: 1000;
  font-size: 14px;
}
.toast.show {
  transform: translateY(0);
  opacity: 1;
}
.toast.error {
  background: #dc2626;
}
.toast.success {
  background: #059669;
}

.floating-quote {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 1000;
  padding: 14px 18px;
  border-radius: 999px;
  background: var(--cta);
  color: #ffffff;
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  box-shadow: 0 10px 30px rgba(0,0,0,0.18);
}

.floating-quote:hover {
  background: var(--cta-hover);
  transform: translateY(-2px);
}