@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

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

:root {
  --color-bg: #0c0e14;
  --color-surface: #141722;
  --color-surface-card: #191d2b;
  --color-surface-hover: #202537;
  --color-primary: #6c63ff;
  --color-primary-light: #8b85ff;
  --color-primary-glow: rgba(108, 99, 255, 0.2);
  --color-text: #f0f2f8;
  --color-text-secondary: #c0c6d8;
  --color-muted: #7b829d;
  --color-border: #252a3d;
  --color-border-subtle: #1c2132;
  --color-success: #10b981;
  --color-success-bg: rgba(16, 185, 129, 0.12);
  --color-success-border: rgba(16, 185, 129, 0.3);
  --color-warning: #f59e0b;
  --color-warning-bg: rgba(245, 158, 11, 0.1);
  --color-warning-border: rgba(245, 158, 11, 0.3);
  --color-error: #ef4444;
  --color-error-bg: rgba(239, 68, 68, 0.12);
  --color-error-border: rgba(239, 68, 68, 0.3);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --shadow-card: 0 4px 16px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 8px 24px rgba(108, 99, 255, 0.15);
}

body {
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  width: 100%;
}

/* Accessibility: Skip link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 20px;
  background: var(--color-primary);
  color: #fff;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  z-index: 9999;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: top 0.2s ease;
}
.skip-link:focus {
  top: 12px;
}

/* Header & Navigation */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 20px;
  max-width: 1320px;
}

.brand-block {
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.brand-link {
  text-decoration: none;
  color: inherit;
  display: inline-block;
}

.logo {
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: -0.4px;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: color 0.15s ease;
}

.logo::before {
  content: "⚡";
  font-size: 1.2rem;
}

.brand-link:hover .logo {
  color: var(--color-primary-light);
}

.tagline {
  font-size: 0.78rem;
  color: var(--color-muted);
  margin-top: 2px;
}

/* Desktop Nav */
.site-nav {
  display: flex;
  align-items: center;
  flex-shrink: 1;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 4px;
  align-items: center;
  margin: 0;
  padding: 0;
}

.nav-link {
  display: inline-block;
  padding: 8px 12px;
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
  border: 1px solid transparent;
  white-space: nowrap;
}

.nav-link:hover {
  color: #fff;
  background: var(--color-surface-hover);
}

.nav-link.active {
  color: #fff;
  background: var(--color-surface-card);
  border-color: var(--color-border);
  font-weight: 600;
}

/* Header Actions */
.header-action-block {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.header-contact-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  background: var(--color-surface-card);
  padding: 7px 14px;
  border-radius: 20px;
  border: 1px solid var(--color-border);
  text-decoration: none;
  transition: all 0.15s ease;
  white-space: nowrap;
  flex-shrink: 0;
}

.header-contact-badge:hover {
  border-color: var(--color-primary);
  color: #fff;
}

.header-phone {
  font-weight: 500;
  white-space: nowrap;
}

.status-indicator.live {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-success);
  box-shadow: 0 0 8px var(--color-success);
}

/* Mobile Nav Toggle */
.nav-toggle {
  display: none;
  background: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  cursor: pointer;
  color: var(--color-text);
  transition: all 0.15s ease;
}

.nav-toggle:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-primary-light);
}

.nav-toggle-icon {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 20px;
}

.nav-toggle-icon .bar {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 1px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle.is-active .nav-toggle-icon .bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle.is-active .nav-toggle-icon .bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-active .nav-toggle-icon .bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Mobile Nav Drawer */
.mobile-nav {
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
  padding: 16px 0;
}

.mobile-nav-inner {
  padding: 0 20px;
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 0;
  padding: 0;
}

.mobile-nav-link {
  display: block;
  padding: 10px 14px;
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  background: var(--color-surface-card);
  border: 1px solid var(--color-border-subtle);
  transition: all 0.15s ease;
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  color: #fff;
  background: var(--color-surface-hover);
  border-color: var(--color-primary);
}

/* Main Content */
.site-main {
  flex: 1;
}

.page-content {
  padding: 36px 20px 64px;
}

/* Hero Section */
.hero-section {
  padding: 56px 0 64px;
  background: radial-gradient(ellipse at 50% 0%, rgba(108, 99, 255, 0.15) 0%, transparent 70%);
  border-bottom: 1px solid var(--color-border);
}

.hero-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.hero-content {
  max-width: 820px;
}

.hero-badge {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--color-primary-light);
  background: var(--color-primary-glow);
  padding: 5px 14px;
  border-radius: 20px;
  margin-bottom: 18px;
  border: 1px solid rgba(108, 99, 255, 0.3);
}

.hero-title {
  font-size: 2.8rem;
  font-weight: 800;
  letter-spacing: -0.8px;
  color: #fff;
  margin-bottom: 12px;
  line-height: 1.15;
}

.hero-subtitle {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 16px;
}

.hero-text {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 32px;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.15s ease;
  border: none;
  text-align: center;
}

.btn-primary {
  background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
  color: #fff;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #4f46e5 0%, #4338ca 100%);
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
  color: #fff;
}

.btn-secondary {
  background: var(--color-surface-card);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-surface-hover);
  color: #fff;
  border-color: var(--color-primary-light);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary-light);
  border: 1px solid var(--color-primary-light);
}

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

/* Sections on Landing */
.section {
  padding: 56px 0;
  border-bottom: 1px solid var(--color-border-subtle);
}

.section-heading-centered {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 36px;
}

.section-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 32px;
  flex-wrap: wrap;
  gap: 16px;
}

.section-actions-centered {
  text-align: center;
  margin-top: 32px;
}

/* Pillars Grid */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.pillar-card {
  background: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.pillar-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-hover);
}

.pillar-icon-box {
  font-size: 2.2rem;
  margin-bottom: 16px;
}

.pillar-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}

.pillar-desc {
  font-size: 0.92rem;
  color: var(--color-text-secondary);
  line-height: 1.55;
  margin-bottom: 18px;
  flex: 1;
}

.pillar-link {
  color: var(--color-primary-light);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
}

.pillar-link:hover {
  text-decoration: underline;
}

/* Services Mini Grid */
.services-mini-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.service-mini-card {
  background: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px 20px;
}

.service-mini-icon {
  font-size: 1.8rem;
  margin-bottom: 12px;
}

.service-mini-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 8px;
}

.service-mini-text {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* About Preview Box */
.about-preview-box {
  background: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
}

.section-tag {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-primary-light);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  display: inline-block;
  margin-bottom: 8px;
}

.about-preview-text {
  font-size: 1rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 14px;
}

.about-preview-actions {
  margin-top: 24px;
}

/* CTA Card */
.cta-card {
  background: linear-gradient(135deg, #191d2b 0%, #151824 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.cta-content {
  max-width: 600px;
}

.cta-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.cta-text {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.cta-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* Page Headers & Breadcrumbs */
.page-header {
  margin-bottom: 32px;
}

.breadcrumb {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-bottom: 12px;
}

.breadcrumb a {
  color: var(--color-text-secondary);
  text-decoration: none;
}

.breadcrumb a:hover {
  color: #fff;
  text-decoration: underline;
}

.bc-sep {
  margin: 0 6px;
  color: var(--color-muted);
}

.page-title {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: #fff;
  margin-bottom: 8px;
}

.page-subtitle {
  font-size: 1.05rem;
  color: var(--color-muted);
}

/* Content Cards & Blocks */
.content-sections {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.content-card {
  background: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px;
}

.content-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}

.content-paragraph {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 12px;
}

.content-paragraph:last-child {
  margin-bottom: 0;
}

.styled-list {
  list-style: none;
  padding: 0;
  margin: 16px 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.styled-list li {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.55;
  padding-left: 20px;
  position: relative;
}

.styled-list li::before {
  content: "•";
  position: absolute;
  left: 4px;
  color: var(--color-primary-light);
  font-size: 1.2rem;
  line-height: 1;
}

.styled-numbered-list {
  padding-left: 22px;
  margin: 16px 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.styled-numbered-list li {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.55;
}

.styled-numbered-list li a {
  color: var(--color-primary-light);
  text-decoration: underline;
}

.features-list-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 16px;
}

.feature-item {
  display: flex;
  gap: 12px;
}

.feature-bullet {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-success-bg);
  color: var(--color-success);
  border: 1px solid var(--color-success-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  flex-shrink: 0;
}

.feature-item-title {
  font-size: 0.98rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 4px;
}

.feature-item-text {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  line-height: 1.45;
}

.principles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
  margin-top: 16px;
}

.principle-box {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 20px;
}

.principle-num {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--color-primary-light);
  margin-bottom: 8px;
  font-family: monospace;
}

.principle-title {
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 6px;
}

.principle-text {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  line-height: 1.45;
}

.page-bottom-cta {
  display: flex;
  gap: 16px;
  margin-top: 40px;
  flex-wrap: wrap;
}

.info-banner {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  background: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  margin-bottom: 32px;
}

.info-icon {
  font-size: 1.3rem;
  line-height: 1;
}

.info-content {
  font-size: 0.92rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.info-content strong {
  color: #fff;
  display: block;
  margin-bottom: 2px;
}

/* Services Full Grid */
.services-full-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.service-full-card {
  background: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 26px;
  display: flex;
  flex-direction: column;
}

.service-card-header {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 14px;
}

.service-card-icon {
  font-size: 2rem;
  line-height: 1;
}

.service-card-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}

.service-card-tag {
  font-size: 0.78rem;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.service-card-desc {
  font-size: 0.92rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin-bottom: 16px;
}

.service-card-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: auto;
}

.service-card-list li {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  padding-left: 18px;
  position: relative;
  line-height: 1.4;
}

.service-card-list li::before {
  content: "›";
  position: absolute;
  left: 4px;
  color: var(--color-primary-light);
  font-weight: 700;
}

/* Contacts Layout */
.contacts-layout {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.contacts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.contact-card {
  background: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 22px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-icon-box {
  font-size: 1.8rem;
  line-height: 1;
}

.contact-card-title {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-muted);
  margin-bottom: 6px;
}

.contact-card-value {
  font-size: 1.05rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 4px;
}

.contact-link {
  color: #fff;
  text-decoration: none;
}

.contact-link:hover {
  color: var(--color-primary-light);
  text-decoration: underline;
}

.contact-card-note {
  font-size: 0.8rem;
  color: var(--color-muted);
  display: block;
}

.text-muted {
  color: var(--color-muted) !important;
  font-weight: normal !important;
}

.contacts-help-block {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

/* Technical Hub */
.tech-section {
  margin-bottom: 44px;
}

.tech-categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.tech-cat-card {
  background: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 22px;
}

.tech-cat-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.tech-cat-icon {
  font-size: 1.8rem;
}

.tech-status-badge {
  font-size: 0.72rem;
  padding: 3px 8px;
  border-radius: 12px;
  font-weight: 600;
  text-transform: uppercase;
}

.badge-planned {
  background: rgba(245, 158, 11, 0.12);
  color: #f59e0b;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.tech-cat-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.tech-cat-desc {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.tech-articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.tech-article-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 22px;
  display: flex;
  flex-direction: column;
}

.tech-article-meta {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.tech-article-tag {
  font-size: 0.75rem;
  background: var(--color-surface-hover);
  color: var(--color-text-secondary);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
}

.tag-skeleton {
  background: rgba(108, 99, 255, 0.15);
  color: var(--color-primary-light);
  border: 1px solid rgba(108, 99, 255, 0.3);
}

.tech-article-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 10px;
  line-height: 1.4;
}

.tech-article-summary {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin-bottom: 16px;
  flex: 1;
}

.tech-article-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
  border-top: 1px solid var(--color-border-subtle);
  padding-top: 12px;
  color: var(--color-muted);
}

.tech-article-slug code {
  color: var(--color-primary-light);
  font-family: monospace;
}

/* Catalog Heading */
.catalog-heading {
  margin-bottom: 28px;
}

.catalog-meta {
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
}

.section-title {
  font-size: 1.85rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.4px;
}

.catalog-count {
  font-size: 0.95rem;
  color: var(--color-muted);
  font-weight: 500;
}

.section-subtitle {
  font-size: 0.95rem;
  color: var(--color-muted);
  margin-top: 4px;
}

/* Product Grid */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 22px;
}

/* Product Card */
.product-card {
  background: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  box-shadow: var(--shadow-card);
}

.product-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-primary-light);
}

/* Media / Image Container */
.product-media {
  position: relative;
  width: 100%;
  padding-top: 68%;
  background: var(--color-surface);
  overflow: hidden;
}

.product-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  z-index: 1;
  opacity: 1;
  visibility: visible;
  transition: transform 0.3s ease;
}

.product-card:hover .product-image {
  transform: scale(1.03);
}

.photo-placeholder {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--color-muted);
  background: var(--color-surface);
  z-index: 0;
}

.photo-placeholder svg {
  opacity: 0.45;
}

.photo-placeholder span {
  font-size: 0.78rem;
  letter-spacing: 0.3px;
  text-transform: uppercase;
  opacity: 0.6;
}

.photo-placeholder.fallback-icon,
.fallback-icon {
  display: none !important;
  z-index: 2;
}

.media-fallback .fallback-icon {
  display: flex !important;
  z-index: 2;
}

.media-fallback .product-image,
.media-fallback .product-detail-img {
  display: none !important;
}

/* Badges */
.badge-overlay {
  position: absolute;
  top: 10px;
  left: 10px;
  z-index: 2;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 9px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.2px;
}

.badge.in-stock {
  background: var(--color-success-bg);
  color: var(--color-success);
  border: 1px solid var(--color-success-border);
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* Product Info */
.product-info {
  padding: 18px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.product-header {
  margin-bottom: 8px;
}

.product-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: #fff;
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-condition {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--color-muted);
  background: var(--color-surface-hover);
  padding: 2px 7px;
  border-radius: 4px;
  margin-top: 5px;
  text-transform: capitalize;
}

.product-desc {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.45;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

/* Product Footer */
.product-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 14px;
  border-top: 1px solid var(--color-border);
  margin-top: auto;
}

.product-price-block {
  display: flex;
  flex-direction: column;
}

.price-value {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.3px;
}

.btn-reserve {
  padding: 8px 14px;
  background: var(--color-primary-glow);
  color: var(--color-primary-light);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.btn-reserve:hover {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 0 12px var(--color-primary-glow);
}

/* Empty Catalog */
.empty-catalog {
  text-align: center;
  padding: 72px 20px;
  background: var(--color-surface-card);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-lg);
  max-width: 580px;
  margin: 0 auto;
}

.empty-icon {
  font-size: 3.5rem;
  margin-bottom: 16px;
}

.empty-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 10px;
}

.empty-text {
  font-size: 0.92rem;
  color: var(--color-muted);
  line-height: 1.55;
}

/* Alert Banner */
.alert-banner {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px 24px;
  border-radius: var(--radius-md);
  margin-bottom: 28px;
}

.alert-banner.alert-warning {
  background: var(--color-warning-bg);
  border: 1px solid var(--color-warning-border);
  color: #fcd34d;
}

.alert-icon {
  font-size: 1.5rem;
  line-height: 1;
}

.alert-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
  color: #fff;
}

.alert-text {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
}

/* Modal Dialog */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.modal-window {
  background: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 480px;
  padding: 28px 28px 24px;
  position: relative;
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.6);
  max-height: 90vh;
  overflow-y: auto;
}

.modal-close {
  position: absolute;
  top: 18px;
  right: 18px;
  background: transparent;
  border: none;
  font-size: 1.4rem;
  color: var(--color-muted);
  cursor: pointer;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: all 0.15s ease;
}

.modal-close:hover {
  background: var(--color-surface-hover);
  color: #fff;
}

.modal-header {
  margin-bottom: 18px;
  padding-right: 28px;
}

.modal-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}

.modal-subtitle {
  font-size: 0.88rem;
  color: var(--color-muted);
}

.modal-product-summary {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  margin-bottom: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.modal-product-title {
  font-size: 0.92rem;
  font-weight: 600;
  color: #fff;
  flex: 1;
}

.modal-product-price {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-primary-light);
  white-space: nowrap;
}

.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: 6px;
}

.required-star {
  color: var(--color-error);
}

.optional-label {
  color: var(--color-muted);
  font-weight: 400;
}

.form-input {
  width: 100%;
  padding: 10px 14px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.form-hint {
  display: block;
  font-size: 0.78rem;
  color: var(--color-muted);
  margin-top: 4px;
}

.form-consent-group {
  margin-top: 14px;
  margin-bottom: 16px;
}

.form-checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  cursor: pointer;
  font-size: 0.84rem;
  color: var(--color-text-secondary);
  line-height: 1.45;
  user-select: none;
}

.form-checkbox {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--color-primary);
  cursor: pointer;
}

.form-checkbox:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.checkbox-caption a.privacy-link {
  color: var(--color-primary);
  text-decoration: underline;
  transition: color 0.15s ease;
}

.checkbox-caption a.privacy-link:hover {
  color: var(--color-primary-hover, #60a5fa);
}

.modal-alert {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  margin-bottom: 16px;
}

.modal-alert-error {
  background: var(--color-error-bg);
  border: 1px solid var(--color-error-border);
  color: #fca5a5;
}

.modal-notice {
  font-size: 0.8rem;
  color: var(--color-muted);
  margin-bottom: 20px;
  line-height: 1.4;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

.btn-modal-secondary {
  padding: 9px 18px;
  background: transparent;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-modal-secondary:hover {
  background: var(--color-surface-hover);
  color: #fff;
}

.btn-modal-primary {
  padding: 9px 20px;
  background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-modal-primary:hover:not(:disabled) {
  background: linear-gradient(135deg, #4f46e5 0%, #4338ca 100%);
}

.btn-modal-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Modal Success State */
.modal-success-box {
  text-align: center;
  padding: 10px 0;
}

.success-icon {
  width: 52px;
  height: 52px;
  background: var(--color-success-bg);
  border: 1px solid var(--color-success-border);
  color: var(--color-success);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  font-weight: 700;
  margin: 0 auto 16px;
}

.success-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.success-message {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin-bottom: 12px;
}

.success-details {
  font-size: 0.82rem;
  color: var(--color-muted);
  background: var(--color-surface);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  margin-bottom: 22px;
}

/* Site Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
  padding: 48px 0 24px;
  margin-top: auto;
}

.footer-container {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 36px;
}

.footer-brand {
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}

.footer-desc {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  max-width: 380px;
}

.footer-heading {
  font-size: 0.95rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.88rem;
  transition: color 0.15s ease;
}

.footer-links a:hover {
  color: #fff;
  text-decoration: underline;
}

.footer-contact-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--color-text-secondary);
}

.footer-contact-list a {
  color: var(--color-text-secondary);
  text-decoration: none;
}

.footer-contact-list a:hover {
  color: #fff;
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px solid var(--color-border-subtle);
  padding-top: 20px;
}

.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-copy {
  font-size: 0.82rem;
  color: var(--color-muted);
}

.footer-meta-links {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.82rem;
}

.footer-meta-links a {
  color: var(--color-muted);
  text-decoration: none;
}

.footer-meta-links a:hover {
  color: #fff;
}

.meta-sep {
  color: var(--color-border);
}

.system-tag {
  font-size: 0.75rem;
  color: var(--color-muted);
  font-family: monospace;
}

/* Responsive Media Queries */
@media (max-width: 1150px) {
  .site-nav {
    display: none;
  }
  .nav-toggle {
    display: block;
  }
}

@media (max-width: 900px) {
  .footer-container {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .tagline {
    display: none;
  }
  .hero-title {
    font-size: 2.2rem;
  }
  .hero-subtitle {
    font-size: 1.1rem;
  }
  .section-title {
    font-size: 1.5rem;
  }
  .cta-card {
    flex-direction: column;
    align-items: flex-start;
  }
  .page-title {
    font-size: 1.8rem;
  }
  .product-grid {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 16px;
  }
}

@media (max-width: 480px) {
  .header-container {
    padding: 10px 12px;
    gap: 8px;
  }
  .logo {
    font-size: 1.15rem;
    gap: 6px;
  }
  .logo::before {
    font-size: 1rem;
  }
  .header-action-block {
    gap: 6px;
  }
  .header-contact-badge {
    padding: 5px 8px;
    font-size: 0.78rem;
    gap: 5px;
  }
  .header-phone {
    font-size: 0.78rem;
  }
  .status-indicator.live {
    width: 6px;
    height: 6px;
  }
  .nav-toggle {
    padding: 6px 8px;
  }
  .nav-toggle-icon {
    width: 18px;
  }
  .product-grid {
    grid-template-columns: 1fr;
  }
  .container {
    padding: 0 16px;
  }
  .hero-section {
    padding: 36px 0 44px;
  }
  .hero-title {
    font-size: 1.85rem;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .modal-window {
    padding: 22px 18px 18px;
  }
}

/* ==========================================================================
   WEB-03B: Product Detail Page & Error Page Styles
   ========================================================================== */

/* Breadcrumbs */
.breadcrumbs {
  margin-bottom: 24px;
  font-size: 0.88rem;
}

.breadcrumbs-list {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  gap: 8px;
  align-items: center;
  margin: 0;
  padding: 0;
}

.breadcrumbs-list a {
  color: var(--color-muted);
  text-decoration: none;
  transition: color 0.15s ease;
}

.breadcrumbs-list a:hover {
  color: var(--color-primary-light);
}

.breadcrumb-separator {
  color: var(--color-border);
  user-select: none;
}

.breadcrumb-item.active {
  color: var(--color-text-secondary);
  font-weight: 500;
}

/* Product Card Links */
.product-media-link {
  display: block;
  width: 100%;
  height: 100%;
  text-decoration: none;
  color: inherit;
}

.product-title-link {
  color: inherit;
  text-decoration: none;
  transition: color 0.15s ease;
}

.product-title-link:hover {
  color: var(--color-primary-light);
}

/* Product Detail Layout */
.product-detail-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
  margin-bottom: 60px;
}

@media (max-width: 900px) {
  .product-detail-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

/* Product Gallery */
.product-detail-gallery {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.main-image-container {
  position: relative;
  background: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-card);
}

.product-detail-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #080a0f;
  transition: opacity 0.2s ease;
}

.product-gallery-thumbs {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 4px 2px;
}

.thumb-btn {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--color-border);
  background: var(--color-surface-card);
  padding: 2px;
  cursor: pointer;
  transition: all 0.15s ease;
  flex-shrink: 0;
  outline: none;
}

.thumb-btn:hover {
  border-color: var(--color-primary-light);
}

.thumb-btn:focus-visible {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.thumb-btn.active {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-primary-glow);
}

.thumb-btn img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 4px;
}

/* Product Detail Info */
.product-detail-info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.product-status-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.product-condition-pill {
  font-size: 0.8rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  padding: 4px 10px;
  border-radius: 20px;
  font-weight: 500;
}

.product-detail-title {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.25;
  color: #fff;
  letter-spacing: -0.5px;
}

.product-detail-price-box {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.product-detail-price {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--color-primary-light);
  letter-spacing: -0.5px;
}

.product-detail-action-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: var(--shadow-card);
}

.btn-reserve-large {
  width: 100%;
  padding: 14px 24px;
  font-size: 1.1rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  text-align: center;
  cursor: pointer;
}

.reserve-note {
  font-size: 0.84rem;
  color: var(--color-muted);
  line-height: 1.4;
}

.warranty-note {
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  line-height: 1.4;
  border-top: 1px solid var(--color-border-subtle);
  padding-top: 10px;
}

.product-detail-section {
  border-top: 1px solid var(--color-border);
  padding-top: 20px;
}

.section-heading-sm {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}

.product-description-text {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  white-space: pre-line;
}

/* Specifications Table */
.product-specs-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.product-specs-table tr {
  border-bottom: 1px solid var(--color-border-subtle);
}

.product-specs-table th {
  text-align: left;
  padding: 10px 0;
  color: var(--color-muted);
  font-weight: 500;
  width: 35%;
}

.product-specs-table td {
  text-align: left;
  padding: 10px 0;
  color: var(--color-text);
  font-weight: 600;
}

/* Error Pages (404 / 503) */
.error-page-card {
  max-width: 600px;
  margin: 40px auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 48px 32px;
  text-align: center;
  box-shadow: var(--shadow-card);
}

.error-icon {
  font-size: 3.5rem;
  margin-bottom: 16px;
}

.error-title {
  font-size: 1.8rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
}

.error-message {
  font-size: 1.05rem;
  color: var(--color-text);
  margin-bottom: 12px;
  font-weight: 500;
}

.error-hint {
  font-size: 0.88rem;
  color: var(--color-muted);
  margin-bottom: 28px;
  line-height: 1.5;
}

.error-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* ==========================================================================
   WEB-03C Catalog Search, Filters, Categories & Pagination
   ========================================================================== */

/* Breadcrumbs */
.breadcrumbs-nav {
  margin-bottom: 20px;
}

.breadcrumbs-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.88rem;
  color: var(--color-muted);
}

.breadcrumbs-item a {
  color: var(--color-muted);
  text-decoration: none;
  transition: color 0.15s ease;
}

.breadcrumbs-item a:hover {
  color: var(--color-primary-light);
  text-decoration: underline;
}

.breadcrumbs-item.current {
  color: var(--color-text);
  font-weight: 500;
}

.breadcrumbs-separator {
  color: var(--color-border);
  user-select: none;
}

/* Search Bar */
.catalog-search-section {
  margin-bottom: 24px;
}

.catalog-search-form {
  width: 100%;
}

.search-input-group {
  display: flex;
  align-items: center;
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 4px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.search-input-group:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.25);
}

.catalog-search-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  padding: 10px 14px;
  font-size: 0.98rem;
  color: var(--color-text);
  min-width: 0;
}

.catalog-search-input::placeholder {
  color: var(--color-muted);
}

.search-clear-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  color: var(--color-muted);
  text-decoration: none;
  font-size: 0.95rem;
  border-radius: 50%;
  margin-right: 6px;
  transition: background 0.15s ease, color 0.15s ease;
}

.search-clear-link:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.btn-search-submit {
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: calc(var(--radius-md) - 2px);
  padding: 10px 22px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease;
  white-space: nowrap;
}

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

/* Active Filter Chips */
.active-filters-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  padding: 12px 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 24px;
}

.active-filters-label {
  font-size: 0.85rem;
  color: var(--color-muted);
  font-weight: 600;
}

.active-filter-tags {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(37, 99, 235, 0.15);
  border: 1px solid rgba(37, 99, 235, 0.35);
  color: var(--color-primary-light);
  border-radius: 16px;
  padding: 4px 10px;
  font-size: 0.82rem;
  font-weight: 500;
}

.chip-remove {
  color: var(--color-primary-light);
  text-decoration: none;
  font-weight: bold;
  font-size: 0.85rem;
  margin-left: 2px;
  line-height: 1;
  transition: opacity 0.15s ease;
}

.chip-remove:hover {
  opacity: 0.7;
}

.btn-clear-all-filters {
  font-size: 0.82rem;
  color: var(--color-muted);
  text-decoration: underline;
  margin-left: 8px;
  transition: color 0.15s ease;
}

.btn-clear-all-filters:hover {
  color: #ef4444;
}

/* Catalog Layout (Sidebar + Main) */
.catalog-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 28px;
  align-items: start;
}

/* Sidebar */
.catalog-sidebar {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  position: sticky;
  top: 90px;
}

.filters-form {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.filter-block {
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 18px;
}

.filter-block:last-of-type {
  border-bottom: none;
  padding-bottom: 0;
}

.filter-title {
  font-size: 0.92rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-text);
  margin-bottom: 12px;
}

/* Categories List */
.filter-category-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.filter-category-link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.9rem;
  transition: background 0.15s ease, color 0.15s ease;
}

.filter-category-link:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-primary-light);
}

.filter-category-link.active {
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
}

.filter-category-link.active .cat-count {
  color: rgba(255, 255, 255, 0.85);
}

.cat-count {
  font-size: 0.8rem;
  color: var(--color-muted);
}

/* Selects */
.filter-select-wrap {
  position: relative;
}

.filter-select {
  width: 100%;
  background: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  padding: 9px 12px;
  font-size: 0.88rem;
  outline: none;
  cursor: pointer;
  transition: border-color 0.2s ease;
}

.filter-select:focus {
  border-color: var(--color-primary);
}

/* Price Inputs */
.price-inputs-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.price-input-field {
  flex: 1;
  display: flex;
  align-items: center;
  background: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0 8px;
}

.price-input-field:focus-within {
  border-color: var(--color-primary);
}

.price-label {
  font-size: 0.78rem;
  color: var(--color-muted);
  margin-right: 4px;
}

.price-input {
  width: 100%;
  background: transparent;
  border: none;
  outline: none;
  color: var(--color-text);
  padding: 8px 0;
  font-size: 0.88rem;
  min-width: 0;
}

.price-separator {
  color: var(--color-muted);
  font-weight: bold;
}

/* Filter Actions */
.filter-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 4px;
}

.btn-filter-apply {
  width: 100%;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease;
  text-align: center;
}

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

.btn-filter-reset {
  display: block;
  width: 100%;
  background: transparent;
  color: var(--color-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  font-size: 0.85rem;
  text-decoration: none;
  text-align: center;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.btn-filter-reset:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-text);
  border-color: var(--color-muted);
}

/* Empty Catalog State */
.empty-catalog {
  background: var(--color-surface);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: 48px 24px;
  text-align: center;
  margin: 20px 0;
}

.empty-icon {
  font-size: 3rem;
  margin-bottom: 14px;
}

.empty-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}

.empty-text {
  font-size: 0.95rem;
  color: var(--color-muted);
  max-width: 440px;
  margin: 0 auto 20px auto;
  line-height: 1.5;
}

.btn-reset-filters {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  text-decoration: none;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.92rem;
  transition: background 0.15s ease;
}

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

/* Pagination */
.catalog-pagination {
  margin-top: 36px;
  display: flex;
  justify-content: center;
}

.pagination-list {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
  padding: 0;
  margin: 0;
  flex-wrap: wrap;
}

.pagination-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 38px;
  padding: 0 12px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.15s ease;
}

.pagination-link:hover:not(.disabled):not(.current) {
  background: rgba(37, 99, 235, 0.15);
  border-color: var(--color-primary);
  color: var(--color-primary-light);
}

.pagination-item.active .pagination-link.current {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  font-weight: 700;
}

.pagination-item.disabled .pagination-link.disabled {
  color: rgba(255, 255, 255, 0.25);
  border-color: rgba(255, 255, 255, 0.08);
  cursor: not-allowed;
  pointer-events: none;
}

.pagination-item.ellipsis {
  color: var(--color-muted);
  padding: 0 4px;
}

/* Mobile Filter Toggle */
.mobile-filter-toggle-wrap {
  display: none;
  margin-bottom: 16px;
}

.btn-mobile-filter-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px 18px;
  color: var(--color-text);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  min-height: 48px;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.btn-mobile-filter-toggle:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-primary);
}

.filter-active-indicator {
  color: var(--color-primary-light);
  font-size: 0.75rem;
}

.toggle-arrow {
  font-size: 0.8rem;
  color: var(--color-muted);
  margin-left: auto;
}

/* Responsive Breakpoints */
@media (max-width: 900px) {
  .mobile-filter-toggle-wrap {
    display: block;
  }

  .catalog-layout {
    grid-template-columns: 1fr;
  }

  .catalog-sidebar {
    display: none;
    position: static;
    margin-bottom: 24px;
  }

  .catalog-sidebar.is-open {
    display: block;
  }
}

/* ==========================================================================
   Technical Content Hub & Article Styling (WEB-04A)
   ========================================================================== */

.category-header-top {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-top: 12px;
}

.tech-cat-large-icon {
  font-size: 3rem;
  line-height: 1;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Technical Categories Grid */
.tech-categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
  margin-top: 16px;
}

.tech-cat-card {
  background: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.tech-cat-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-primary-light);
  box-shadow: 0 8px 24px rgba(108, 99, 255, 0.15);
}

.tech-cat-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.tech-cat-icon {
  font-size: 1.8rem;
  line-height: 1;
}

.tech-status-badge {
  font-size: 0.78rem;
  padding: 4px 10px;
  border-radius: 9999px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.tech-status-badge.badge-published {
  background: rgba(16, 185, 129, 0.15);
  color: var(--color-success);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.tech-status-badge.badge-planned {
  background: rgba(245, 158, 11, 0.12);
  color: var(--color-warning);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.tech-cat-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.tech-cat-desc {
  font-size: 0.9rem;
  color: var(--color-muted);
  line-height: 1.5;
  margin-bottom: 16px;
  flex-grow: 1;
}

.tech-cat-arrow {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-primary-light);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* Technical Articles Grid */
.tech-articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
  margin-top: 16px;
}

.tech-article-card {
  background: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.tech-article-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary-light);
}

.tech-article-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  gap: 10px;
}

.tech-article-tag {
  background: rgba(108, 99, 255, 0.15);
  color: var(--color-primary-light);
  border: 1px solid rgba(108, 99, 255, 0.3);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 9999px;
}

.tech-article-date {
  font-size: 0.8rem;
  color: var(--color-muted);
}

.tech-article-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.4;
}

.tech-article-title-link {
  color: #fff;
  text-decoration: none;
  transition: color 0.15s ease;
}

.tech-article-title-link:hover {
  color: var(--color-primary-light);
}

.tech-article-summary {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin-bottom: 16px;
  flex-grow: 1;
}

.tech-article-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--color-border-subtle);
  font-size: 0.85rem;
  gap: 12px;
}

.tech-article-equipment {
  color: var(--color-muted);
  font-size: 0.82rem;
  background: var(--color-surface);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.tech-article-read-btn {
  color: var(--color-primary-light);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.88rem;
  margin-left: auto;
}

.tech-article-read-btn:hover {
  text-decoration: underline;
}

.category-back-wrap {
  margin-top: 24px;
  margin-bottom: 32px;
}

/* Article Detail Page Layout */
.article-header {
  margin-bottom: 24px;
}

.article-header-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-bottom: 14px;
}

.tech-article-category-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(108, 99, 255, 0.15);
  color: var(--color-primary-light);
  border: 1px solid rgba(108, 99, 255, 0.3);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 9999px;
  text-decoration: none;
  transition: background 0.15s ease;
}

.tech-article-category-badge:hover {
  background: rgba(108, 99, 255, 0.25);
}

.article-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  color: var(--color-muted);
}

.article-page-title {
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1.25;
  color: #fff;
  margin-bottom: 14px;
}

.article-lead-description {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  max-width: 900px;
}

.article-main-container {
  background: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 40px;
  margin-bottom: 40px;
  max-width: 960px;
}

/* Typography styles for sanitized markdown body */
.typography {
  color: var(--color-text);
  font-size: 1.02rem;
  line-height: 1.75;
}

.typography h2 {
  font-size: 1.55rem;
  font-weight: 700;
  color: #fff;
  margin-top: 36px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.typography h2:first-child {
  margin-top: 0;
}

.typography h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #fff;
  margin-top: 28px;
  margin-bottom: 12px;
}

.typography h4 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-top: 20px;
  margin-bottom: 10px;
}

.typography p {
  margin-bottom: 18px;
}

.typography ul,
.typography ol {
  margin-bottom: 20px;
  padding-left: 28px;
}

.typography li {
  margin-bottom: 8px;
}

.typography strong,
.typography b {
  color: #fff;
  font-weight: 600;
}

.typography em,
.typography i {
  color: var(--color-text-secondary);
}

.typography blockquote {
  border-left: 4px solid var(--color-primary);
  background: var(--color-surface);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 16px 20px;
  margin: 24px 0;
  color: var(--color-text-secondary);
}

.typography blockquote p:last-child {
  margin-bottom: 0;
}

.typography code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  background: rgba(255, 255, 255, 0.08);
  padding: 2px 7px;
  border-radius: 4px;
  font-size: 0.9em;
  color: var(--color-primary-light);
}

.typography pre {
  background: #090b10;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  overflow-x: auto;
  margin: 24px 0;
}

.typography pre code {
  background: transparent;
  padding: 0;
  color: #e2e8f0;
  font-size: 0.92rem;
  line-height: 1.6;
}

.typography table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
}

.typography th,
.typography td {
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  text-align: left;
}

.typography th {
  background: var(--color-surface);
  color: #fff;
  font-weight: 600;
}

.typography td {
  color: var(--color-text-secondary);
}

.typography hr {
  border: 0;
  border-top: 1px solid var(--color-border);
  margin: 36px 0;
}

.typography a {
  color: var(--color-primary-light);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.typography a:hover {
  color: #fff;
}

.article-nav-footer {
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

/* Related Products Grid */
.related-products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 16px;
}

@media (max-width: 768px) {
  .category-header-top {
    flex-direction: column;
    align-items: flex-start;
  }

  .article-page-title {
    font-size: 1.7rem;
  }

  .article-main-container {
    padding: 24px 20px;
  }
}