/* ============================================================================
   BRACING SOLUTIONS INC. - PROFESSIONAL CORPORATE WEBSITE
   CSS VARIABLES SYSTEM & CORE STYLES
   ============================================================================ */

/* ============================================================================
   CSS VARIABLES - DESIGN TOKENS
   ============================================================================ */

:root {
  /* ==========================================================
     Bracing Solutions Inc. - Design Tokens (per 重构方案)
     - No gradients / no purple tones
     - B2B medical distribution visual language
     ========================================================== */

  /* Primary palette */
  --primary: #003D82;        /* Deep navy */
  --primary-dark: #002855;   /* Navigation / footer */
  --secondary: #4A7C59;      /* Olive green */
  --accent: #C8553D;         /* Brick red CTA */

  /* Neutral palette */
  --neutral-100: #FFFFFF;
  --neutral-200: #F5F7FA;
  --neutral-300: #E8ECF0;
  --neutral-700: #4A5568;
  --neutral-900: #1A202C;

  /* Legacy aliases (keep existing class usage working) */
  --color-primary: var(--primary);
  --color-primary-light: #0052A3;
  --color-primary-dark: var(--primary-dark);

  --color-secondary: var(--secondary);
  --color-secondary-light: #5C8F6A;
  --color-secondary-dark: #3C6447;

  --color-accent: var(--accent);
  --color-accent-dark: #B04736;

  --color-white: var(--neutral-100);
  --color-light-gray: var(--neutral-200);
  --color-gray: var(--neutral-300);
  --color-gray-medium: #A0AEC0;
  --color-dark-gray: var(--neutral-700);
  --color-text: var(--neutral-900);
  --color-text-light: #667085;
  --color-black: #000000;

  /* Status colors */
  --color-success: #2E8540;
  --color-warning: #B45309;
  --color-info: #1D4ED8;
  --color-error: var(--color-accent);
  --color-error-dark: var(--color-accent-dark);

  /* Focus ring */
  --focus-ring: 0 0 0 3px rgba(0, 61, 130, 0.18);
  --focus-ring-inset: inset 0 0 0 3px rgba(0, 61, 130, 0.18);

  /* Typography */
  --font-heading: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
  --font-body: 'Source Sans Pro', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;

  /* Backwards-compatible naming */
  --font-primary: var(--font-body);
  --font-secondary: var(--font-heading);
  
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  
  /* Line Heights */
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  --line-height-loose: 2;
  
  /* Spacing Scale */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 2.5rem;
  --spacing-3xl: 3rem;
  --spacing-4xl: 4rem;
  --spacing-5xl: 5rem;
  
  /* Border Radius */
  --radius-none: 0;
  --radius-sm: 2px;
  --radius-md: 3px;
  --radius-lg: 4px;
  --radius-xl: 6px;
  --radius-2xl: 10px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-none: none;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 6px 18px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 28px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 18px 42px rgba(0, 0, 0, 0.14);
  --shadow-2xl: 0 28px 60px rgba(0, 0, 0, 0.18);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
  
  /* Z-Index Scale */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-tooltip: 600;
  
  /* Container Widths */
  --container-sm: 540px;
  --container-md: 720px;
  --container-lg: 960px;
  --container-xl: 1140px;
  --container-2xl: 1320px;
}

/* ============================================================================
   RESET & BASE STYLES
   ============================================================================ */

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--neutral-700);
  background-color: var(--neutral-100);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

:where(a, button, input, select, textarea, summary, [tabindex]):focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: var(--z-tooltip);
  transform: translateY(-160%);
  background: var(--neutral-100);
  color: var(--neutral-900);
  border: 2px solid var(--primary);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  text-decoration: none;
}

.skip-link:focus-visible {
  transform: translateY(0);
}

/* ============================================================================
   TYPOGRAPHY
   ============================================================================ */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-md);
  color: var(--neutral-900);
}

h1 {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-extrabold);
}

h2 {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
}

h3 {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
}

h4 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
}

h5 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
}

h6 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
}

p {
  margin-bottom: var(--spacing-md);
  line-height: var(--line-height-relaxed);
}

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

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

strong {
  font-weight: var(--font-weight-bold);
}

em {
  font-style: italic;
}

/* ============================================================================
   CONTAINER & GRID SYSTEM
   ============================================================================ */

.container {
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  max-width: var(--container-2xl);
}

@media (min-width: 576px) {
  .container {
    max-width: var(--container-sm);
  }
}

@media (min-width: 768px) {
  .container {
    max-width: var(--container-md);
    padding: 0 var(--spacing-lg);
  }
}

@media (min-width: 992px) {
  .container {
    max-width: var(--container-lg);
  }
}

@media (min-width: 1200px) {
  .container {
    max-width: var(--container-xl);
  }
}

@media (min-width: 1400px) {
  .container {
    max-width: var(--container-2xl);
  }
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--spacing-md);
}

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

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

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

.grid-6 {
  grid-template-columns: repeat(6, 1fr);
}

.grid-12 {
  grid-template-columns: repeat(12, 1fr);
}

/* Responsive Grid Adjustments */
@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4, .grid-6 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .grid-12 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  .grid-2, .grid-3, .grid-4, .grid-6, .grid-12 {
    grid-template-columns: 1fr;
  }
}

/* Flexbox Utilities */
.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.flex-column {
  display: flex;
  flex-direction: column;
}

.flex-wrap {
  flex-wrap: wrap;
}

/* ============================================================================
   HEADER & NAVIGATION
   ============================================================================ */

header {
  position: fixed;
  top: 44px;
  left: 0;
  right: 0;
  background-color: var(--color-white);
  box-shadow: var(--shadow-md);
  z-index: var(--z-sticky);
  transition: all var(--transition-base);
}

header.scrolled {
  box-shadow: var(--shadow-lg);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-xl);
  padding: var(--spacing-md) var(--spacing-lg);
  max-width: var(--container-2xl);
  margin: 0 auto;
  flex-wrap: wrap;
}

.logo {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.logo-text {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.logo-icon {
  width: 32px;
  height: 32px;
  background-color: var(--color-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-weight: var(--font-weight-bold);
}

/* Navigation Menu */
nav {
  flex: 1;
  display: flex;
  justify-content: center;
  min-width: 320px;
}

nav ul {
  list-style: none;
  display: flex;
  gap: var(--spacing-xl);
  align-items: center;
}

nav > ul > li {
  position: relative;
}

nav a {
  color: var(--color-text);
  font-weight: var(--font-weight-medium);
  padding: var(--spacing-sm) 0;
  transition: color var(--transition-fast);
}

nav a:hover {
  color: var(--color-primary);
  text-decoration: none;
}

/* Dropdown Menu */
.dropdown {
  position: relative;
}

.dropdown-toggle::after {
  content: '▼';
  font-size: var(--font-size-xs);
  margin-left: var(--spacing-sm);
  transition: transform var(--transition-fast);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background-color: var(--color-white);
  border: 1px solid var(--color-gray);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-fast);
  z-index: var(--z-dropdown);
  margin-top: var(--spacing-sm);
}

@media (min-width: 769px) {
  .dropdown:hover .dropdown-toggle::after,
  .dropdown:focus-within .dropdown-toggle::after {
    transform: rotate(-180deg);
  }

  .dropdown:hover .dropdown-menu,
  .dropdown:focus-within .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex-shrink: 0;
}

@media (max-width: 992px) {
  .header-container {
    gap: var(--spacing-md);
  }
  
  .header-actions {
    width: 100%;
    justify-content: flex-start;
    padding: 0 var(--spacing-sm) var(--spacing-sm);
  }
}

.header-actions .btn {
  white-space: nowrap;
}

.dropdown-menu li {
  list-style: none;
}

.dropdown-menu a {
  display: block;
  padding: var(--spacing-md) var(--spacing-lg);
  color: var(--color-text);
  transition: all var(--transition-fast);
}

.dropdown-menu a:hover {
  background-color: var(--color-light-gray);
  color: var(--color-primary);
  text-decoration: none;
}

.dropdown-menu li:first-child a {
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.dropdown-menu li:last-child a {
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* Nested Dropdown */
.dropdown-submenu {
  position: relative;
}

.dropdown-submenu > .dropdown-menu {
  left: 100%;
  top: 0;
  margin-top: 0;
  margin-left: var(--spacing-sm);
}

.dropdown-submenu:hover > .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: var(--font-size-2xl);
  cursor: pointer;
  color: var(--color-primary);
  padding: var(--spacing-md);
}

@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }
  
  nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    flex-direction: column;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
    border-bottom: 1px solid var(--color-gray);
  }
  
  nav.active {
    max-height: 500px;
  }
  
  nav ul {
    flex-direction: column;
    gap: 0;
    width: 100%;
  }
  
  nav > ul > li {
    border-bottom: 1px solid var(--color-gray);
  }
  
  nav a {
    display: block;
    padding: var(--spacing-lg);
  }
  
  .dropdown-menu {
    position: static;
    opacity: 0;
    visibility: hidden;
    max-height: 0;
    overflow: hidden;
    box-shadow: none;
    border: none;
    background-color: var(--color-light-gray);
    margin-top: 0;
    transform: none;
    transition: all var(--transition-fast);
  }
  
  .dropdown.active .dropdown-menu {
    opacity: 1;
    visibility: visible;
    max-height: 500px;
  }
  
  .dropdown-menu a {
    padding-left: var(--spacing-2xl);
  }
}

/* ============================================================================
   MAIN CONTENT AREA
   ============================================================================ */

main {
  margin-top: 140px;
  min-height: calc(100vh - 140px);
}

/* ============================================================================
   HERO SECTION
   ============================================================================ */

.hero {
  background-color: var(--primary);
  background-image: var(--hero-image, url('../images/hero/hero-medical-distribution.jpg'));
  background-size: cover;
  background-position: center;
  color: var(--neutral-100);
  padding: var(--spacing-5xl) var(--spacing-lg);
  position: relative;
  overflow: hidden;
  min-height: 600px;
  display: flex;
  align-items: center;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-color: rgba(0, 40, 85, 0.85);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
}

.hero h1 {
  font-size: var(--font-size-5xl);
  margin-bottom: var(--spacing-lg);
  color: var(--neutral-100);
}

.hero p {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-2xl);
  color: rgba(255, 255, 255, 0.9);
}

@media (max-width: 768px) {
  .hero {
    padding: var(--spacing-3xl) var(--spacing-md);
    min-height: 520px;
  }
  
  .hero h1 {
    font-size: var(--font-size-3xl);
  }
  
  .hero p {
    font-size: var(--font-size-base);
  }
}

.hero.hero-compact {
  min-height: 360px;
  padding: var(--spacing-4xl) var(--spacing-lg);
}

/* Hero helpers */
.hero-badge {
  display: inline-block;
  background-color: var(--secondary);
  color: var(--neutral-100);
  padding: 6px 16px;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: 2px;
  margin-bottom: 1.25rem;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-top: 2rem;
}

.hero-cta.hero-cta-left {
  justify-content: flex-start;
}

/* Trust bar */
.trust-bar {
  background-color: var(--neutral-200);
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--neutral-300);
}

.trust-grid {
  display: flex;
  justify-content: center;
  gap: 2.5rem;
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--neutral-700);
  font-size: 0.9375rem;
  font-weight: 600;
}

.trust-icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  background-color: var(--neutral-100);
  border: 1px solid var(--neutral-300);
  border-radius: var(--radius-lg);
}

.trust-icon svg {
  width: 24px;
  height: 24px;
  color: var(--primary);
}

/* Trust badges alt style (pill) */
.trust-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.875rem;
  border-radius: 999px;
  background-color: var(--neutral-100);
  border: 1px solid var(--neutral-300);
  color: var(--neutral-700);
  font-weight: 600;
  font-size: 0.9375rem;
}

.trust-pill .dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background-color: var(--secondary);
}

/* Top utility bar for contact info / account login */
.top-bar {
  background-color: var(--primary-dark);
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.9375rem;
  height: 44px;
  position: fixed;
  inset: 0 0 auto 0;
  z-index: calc(var(--z-sticky) + 1);
  display: flex;
  align-items: center;
}

.top-bar .top-bar-inner {
  max-width: var(--container-2xl);
  margin: 0 auto;
  height: 44px;
  padding: 0 var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
  flex-wrap: nowrap;
}

.top-bar .top-bar-left,
.top-bar .top-bar-right {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  min-width: 0;
}

.top-bar .top-bar-tagline {
  color: rgba(255, 255, 255, 0.75);
}

.top-bar a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  font-weight: 600;
}

.top-bar a:hover {
  color: var(--neutral-100);
}

@media (max-width: 768px) {
  .top-bar .top-bar-inner {
    padding: 0 var(--spacing-md);
    gap: var(--spacing-md);
  }

  .top-bar .top-bar-tagline {
    display: none;
  }
}

.top-bar + header {
  top: 44px;
}

.top-bar + header + main {
  margin-top: 124px;
  min-height: calc(100vh - 124px);
}

/* ============================================================================
   BUTTONS
   ============================================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.1;
  text-decoration: none;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
  text-align: center;
}

.btn-primary {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--neutral-100);
}

.btn-primary:hover {
  background-color: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  text-decoration: none;
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: var(--color-secondary);
  border-color: var(--color-secondary);
  color: var(--neutral-100);
}

.btn-secondary:hover {
  background-color: var(--color-secondary-dark);
  border-color: var(--color-secondary-dark);
  text-decoration: none;
  box-shadow: var(--shadow-md);
}

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

.btn-outline:hover {
  background-color: var(--color-primary);
  color: var(--neutral-100);
  text-decoration: none;
}

.btn-outline.btn-inverse {
  color: rgba(255, 255, 255, 0.98);
  border-color: rgba(255, 255, 255, 0.98);
}

.btn-outline.btn-inverse:hover {
  background-color: var(--neutral-100);
  border-color: var(--neutral-100);
  color: var(--primary);
}

.btn-white {
  background-color: var(--neutral-100);
  border-color: var(--neutral-100);
  color: var(--primary);
}

.btn-white:hover {
  background-color: var(--neutral-200);
  border-color: var(--neutral-200);
  text-decoration: none;
}

.btn-sm {
  padding: 0.625rem 1rem;
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: var(--font-size-lg);
}

.btn-block {
  display: block;
  width: 100%;
}

/* ============================================================================
   CARDS
   ============================================================================ */

.card {
  background-color: var(--neutral-100);
  border: 1px solid var(--neutral-300);
  border-radius: var(--radius-lg);
  box-shadow: none;
  overflow: hidden;
  transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
}

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

.card-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
  display: block;
}

.card-body {
  padding: var(--spacing-lg);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

.card-text {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-md);
  line-height: var(--line-height-relaxed);
}

.card-footer {
  padding: var(--spacing-md) var(--spacing-lg);
  background-color: var(--color-light-gray);
  border-top: 1px solid var(--color-gray);
}

/* ============================================================================
   PRODUCT CARDS (Categories / Featured Products)
   ============================================================================ */

.product-card {
  background: var(--neutral-100);
  border: 1px solid var(--neutral-300);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

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

.product-card-image {
  aspect-ratio: 4 / 3;
  background-color: var(--neutral-200);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
}

.product-card-image img {
  max-width: 88%;
  max-height: 88%;
  object-fit: contain;
}

.product-card-body {
  padding: var(--spacing-lg);
  display: grid;
  gap: 0.75rem;
}

.product-card-title {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--neutral-900);
  margin: 0;
}

.product-card-text {
  color: var(--neutral-700);
  margin: 0;
}

.product-card-actions {
  margin-top: 0.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ============================================================================
   STATS & TESTIMONIALS
   ============================================================================ */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--spacing-lg);
}

@media (max-width: 992px) {
  .stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 576px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
}

.stat-card {
  background: var(--neutral-100);
  border: 1px solid var(--neutral-300);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  text-align: center;
}

.stat-value {
  font-family: var(--font-heading);
  font-weight: 800;
  color: var(--primary);
  font-size: 2rem;
  line-height: 1.1;
  margin-bottom: 0.5rem;
}

.stat-label {
  color: var(--neutral-700);
  font-weight: 600;
}

.testimonials-track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(280px, 420px);
  gap: var(--spacing-lg);
  overflow-x: auto;
  padding: 0.25rem 0 var(--spacing-md);
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.testimonials-track::-webkit-scrollbar {
  height: 10px;
}

.testimonials-track::-webkit-scrollbar-track {
  background: var(--neutral-200);
  border-radius: 999px;
}

.testimonials-track::-webkit-scrollbar-thumb {
  background: rgba(0, 40, 85, 0.25);
  border-radius: 999px;
}

.testimonial-card {
  scroll-snap-align: start;
  background: var(--neutral-100);
  border: 1px solid var(--neutral-300);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: grid;
  gap: 1rem;
}

.testimonial-quote {
  color: var(--neutral-700);
  font-style: italic;
  margin: 0;
}

.testimonial-person {
  display: flex;
  align-items: center;
  gap: 0.875rem;
}

.testimonial-avatar {
  width: 52px;
  height: 52px;
  border-radius: 999px;
  object-fit: cover;
  border: 1px solid var(--neutral-300);
}

.testimonial-name {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--neutral-900);
  margin: 0;
}

.testimonial-title {
  margin: 0;
  color: var(--color-text-light);
  font-size: 0.95rem;
}

/* ============================================================================
   SECTIONS
   ============================================================================ */

section {
  padding: var(--spacing-5xl) var(--spacing-lg);
}

.section-light {
  background-color: var(--color-light-gray);
}

.section-muted {
  background-color: var(--neutral-200);
  border-top: 1px solid var(--neutral-300);
  border-bottom: 1px solid var(--neutral-300);
}

.section-bordered {
  border-top: 1px solid var(--neutral-300);
  border-bottom: 1px solid var(--neutral-300);
}

.section-dark {
  background-color: var(--primary-dark);
  color: var(--neutral-100);
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-title h2 {
  margin-bottom: var(--spacing-md);
}

.section-title p {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  max-width: 600px;
  margin: 0 auto;
}

.section-dark .section-title h2 {
  color: var(--color-white);
}

.section-dark .section-title p {
  color: rgba(255, 255, 255, 0.8);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-full);
  background-color: rgba(0, 61, 130, 0.08);
  color: var(--primary);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.eyebrow.on-dark {
  background-color: rgba(255, 255, 255, 0.12);
  color: var(--neutral-100);
}

/* Split layout (image + text) */
.content-split {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-3xl);
  align-items: center;
}

.content-split .media-frame {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.content-split .media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.content-split .media-caption {
  position: absolute;
  bottom: 1rem;
  left: 1rem;
  padding: 0.5rem 0.75rem;
  background-color: rgba(0, 40, 85, 0.9);
  color: var(--neutral-100);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
}

/* Category grid (6-up) */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.5rem;
}

.category-card {
  background-color: var(--neutral-100);
  border: 1px solid var(--neutral-300);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: grid;
  gap: 0.75rem;
  min-height: 100%;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(0, 61, 130, 0.35);
}

.category-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background-color: var(--neutral-200);
  display: grid;
  place-items: center;
  color: var(--primary);
  font-weight: 800;
  font-size: 1.2rem;
}

.category-card h3 {
  margin: 0;
  font-size: 1.125rem;
}

.category-card p {
  margin: 0;
  color: var(--neutral-700);
}

.category-thumb {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--neutral-200);
  border: 1px solid var(--neutral-300);
}

.category-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Industries grid */
.industries-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.industry-card {
  background-color: var(--neutral-100);
  border: 1px solid var(--neutral-300);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: grid;
  grid-template-rows: 1fr auto;
  min-height: 100%;
  transition: box-shadow var(--transition-fast), transform var(--transition-fast);
  color: inherit;
  text-decoration: none;
}

.industry-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  text-decoration: none;
}

.industry-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.industry-card .industry-body {
  padding: 1.25rem;
  display: grid;
  gap: 0.5rem;
}

.industry-card h4 {
  margin: 0;
}

/* Value list */
.value-grid {
  margin: 1.5rem 0 2rem;
}

.bullet-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.75rem;
}

.bullet-list li {
  display: flex;
  gap: 0.65rem;
  align-items: flex-start;
  color: var(--neutral-700);
}

.bullet-list .check {
  color: var(--secondary);
  font-weight: 800;
}

/* Logo wall */
.logo-wall {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 1.25rem;
  align-items: center;
  justify-items: center;
}

.logo-tile {
  width: 100%;
  border: 1px solid var(--neutral-300);
  border-radius: var(--radius-md);
  background-color: var(--neutral-100);
  padding: 1rem;
  text-align: center;
  color: var(--neutral-700);
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* CTA banner */
.cta-banner {
  background-color: var(--primary);
  color: var(--neutral-100);
  border-radius: var(--radius-xl);
  padding: var(--spacing-3xl);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  align-items: center;
}

.cta-banner h2 {
  color: var(--neutral-100);
  margin: 0 0 0.5rem 0;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.9);
  margin: 0;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: flex-start;
}

/* Product carousel */
.product-carousel {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(260px, 360px);
  gap: 1.5rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
  scroll-snap-type: x mandatory;
}

.product-carousel > * {
  scroll-snap-align: start;
}

.product-carousel::-webkit-scrollbar {
  height: 10px;
}

.product-carousel::-webkit-scrollbar-track {
  background: var(--neutral-200);
  border-radius: 999px;
}

.product-carousel::-webkit-scrollbar-thumb {
  background: rgba(0, 40, 85, 0.25);
  border-radius: 999px;
}

/* Testimonial slider */
.testimonial-slider {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(280px, 380px);
  gap: 1rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
  scroll-snap-type: x mandatory;
}

.testimonial-card {
  scroll-snap-align: start;
  background-color: var(--neutral-100);
  border: 1px solid var(--neutral-300);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: grid;
  gap: 0.75rem;
}

.testimonial-quote {
  font-style: italic;
  color: var(--neutral-700);
}

.testimonial-meta {
  display: grid;
  gap: 0.25rem;
}

/* ============================================================================
   FOOTER
   ============================================================================ */

footer {
  background-color: var(--primary-dark);
  color: var(--neutral-100);
  padding: var(--spacing-3xl) var(--spacing-lg);
}

.footer-content {
  max-width: var(--container-2xl);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-3xl);
}

.footer-section h4 {
  color: var(--color-white);
  margin-bottom: var(--spacing-lg);
}

.footer-section ul {
  list-style: none;
}

.footer-section li {
  margin-bottom: var(--spacing-md);
}

.footer-section a {
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-fast);
}

.footer-section a:hover {
  color: var(--color-white);
  text-decoration: none;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-2xl);
  text-align: center;
  color: rgba(255, 255, 255, 0.7);
}

@media (max-width: 768px) {
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-2xl);
  }
}

@media (max-width: 576px) {
  .footer-content {
    grid-template-columns: 1fr;
  }
}

/* ============================================================================
   FORMS
   ============================================================================ */

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem 1.25rem;
}

label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
}

input[type="text"],
input[type="email"],
input[type="phone"],
input[type="number"],
textarea,
select {
  width: 100%;
  padding: var(--spacing-md);
  border: 1px solid var(--color-gray);
  border-radius: var(--radius-lg);
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  transition: all var(--transition-fast);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="phone"]:focus,
input[type="number"]:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: var(--focus-ring);
}

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

/* ============================================================================
   UTILITIES
   ============================================================================ */

.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.text-primary {
  color: var(--color-primary);
}

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

.text-light {
  color: var(--color-text-light);
}

.text-white {
  color: var(--color-white);
}

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

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

.bg-light {
  background-color: var(--color-light-gray);
}

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

.m-0 { margin: 0; }
.m-1 { margin: var(--spacing-md); }
.m-2 { margin: var(--spacing-lg); }
.m-3 { margin: var(--spacing-2xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-md); }
.mt-2 { margin-top: var(--spacing-lg); }
.mt-3 { margin-top: var(--spacing-2xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-md); }
.mb-2 { margin-bottom: var(--spacing-lg); }
.mb-3 { margin-bottom: var(--spacing-2xl); }

.p-0 { padding: 0; }
.p-1 { padding: var(--spacing-md); }
.p-2 { padding: var(--spacing-lg); }
.p-3 { padding: var(--spacing-2xl); }

.pt-1 { padding-top: var(--spacing-md); }
.pt-2 { padding-top: var(--spacing-lg); }
.pt-3 { padding-top: var(--spacing-2xl); }

.pb-1 { padding-bottom: var(--spacing-md); }
.pb-2 { padding-bottom: var(--spacing-lg); }
.pb-3 { padding-bottom: var(--spacing-2xl); }

.gap-1 { gap: var(--spacing-md); }
.gap-2 { gap: var(--spacing-lg); }
.gap-3 { gap: var(--spacing-2xl); }

.rounded {
  border-radius: var(--radius-lg);
}

.rounded-sm {
  border-radius: var(--radius-sm);
}

.rounded-full {
  border-radius: var(--radius-full);
}

.shadow {
  box-shadow: var(--shadow-md);
}

.shadow-lg {
  box-shadow: var(--shadow-lg);
}

.opacity-50 {
  opacity: 0.5;
}

.opacity-75 {
  opacity: 0.75;
}

.hidden {
  display: none !important;
}

.visible {
  display: block !important;
}

/* ============================================================================
   RESPONSIVE UTILITIES
   ============================================================================ */

@media (max-width: 768px) {
  .hide-mobile {
    display: none !important;
  }
  
  section {
    padding: var(--spacing-3xl) var(--spacing-md);
  }
  
  h1 {
    font-size: var(--font-size-3xl);
  }
  
  h2 {
    font-size: var(--font-size-2xl);
  }
  
  h3 {
    font-size: var(--font-size-xl);
  }
}

@media (min-width: 769px) {
  .show-mobile {
    display: none !important;
  }
}

/* ============================================================================
   ANIMATIONS
   ============================================================================ */

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in {
  animation: fadeIn var(--transition-base) ease-in-out;
}

.animate-slide-up {
  animation: slideInUp var(--transition-base) ease-in-out;
}

.animate-slide-down {
  animation: slideInDown var(--transition-base) ease-in-out;
}

/* ============================================================================
   PRINT STYLES
   ============================================================================ */

@media print {
  header, footer, .no-print {
    display: none;
  }
  
  body {
    background-color: var(--color-white);
  }
  
  a {
    text-decoration: underline;
  }
}