/* ==========================================================================
   大连信洋进出口有限公司 - MPA版本海洋专业主义设计系统
   ========================================================================== */

/* CSS Variables - Design Tokens */
:root {
  /* Colors - Ocean Theme */
  --color-ocean-50: #E0F2FE;
  --color-ocean-100: #BAE6FD;
  --color-ocean-500: #0EA5E9;
  --color-ocean-600: #0284C7;
  --color-ocean-700: #0369A1;
  --color-ocean-900: #1E3A8A;
  
  /* Colors - Neutral */
  --color-neutral-50: #F8FAFC;
  --color-neutral-100: #F1F5F9;
  --color-neutral-200: #E2E8F0;
  --color-neutral-400: #94A3B8;
  --color-neutral-600: #475569;
  --color-neutral-900: #0F172A;
  
  /* Colors - Accent */
  --color-teal-500: #06B6D4;
  --color-success-500: #10B981;
  --color-warning-500: #F59E0B;
  --color-error-500: #EF4444;
  
  /* Background */
  --bg-page: var(--color-neutral-50);
  --bg-surface: #FFFFFF;
  --bg-hero-gradient: linear-gradient(135deg, var(--color-ocean-900) 0%, var(--color-ocean-700) 100%);
  --bg-page-header: linear-gradient(135deg, var(--color-ocean-700) 0%, var(--color-ocean-500) 100%);
  
  /* Typography */
  --font-family-primary: 'Inter', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --font-family-japanese: 'Noto Sans JP', 'Hiragino Kaku Gothic Pro', sans-serif;
  --font-family-monospace: 'SF Mono', 'Consolas', 'Monaco', monospace;
  
  /* Font Sizes */
  --font-size-hero: 72px;
  --font-size-h1: 56px;
  --font-size-h2: 40px;
  --font-size-h3: 28px;
  --font-size-body-large: 20px;
  --font-size-body: 16px;
  --font-size-small: 14px;
  --font-size-caption: 12px;
  
  /* Font Weights */
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Line Heights */
  --line-height-tight: 1.1;
  --line-height-snug: 1.3;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.6;
  
  /* Letter Spacing */
  --letter-spacing-tight: -0.02em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.01em;
  
  /* Spacing - 8pt Grid */
  --space-2: 8px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;
  --space-32: 128px;
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-card: 0 1px 3px rgba(15, 23, 42, 0.1), 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-card-hover: 0 10px 15px rgba(14, 165, 233, 0.15), 0 4px 6px rgba(14, 165, 233, 0.1);
  --shadow-modal: 0 20px 25px rgba(15, 23, 42, 0.15), 0 10px 10px rgba(15, 23, 42, 0.08);
  --shadow-nav: 0 1px 3px rgba(15, 23, 42, 0.08);
  
  /* Animation */
  --duration-fast: 200ms;
  --duration-base: 250ms;
  --duration-slow: 300ms;
  --duration-page: 400ms;
  --easing-default: ease-out;
  --easing-elegant: ease-in-out;
}

/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-relaxed);
  color: var(--color-neutral-900);
  background-color: var(--bg-page);
  overflow-x: hidden;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-8);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-snug);
  color: var(--color-neutral-900);
}

h1 { font-size: var(--font-size-h1); }
h2 { font-size: var(--font-size-h2); }
h3 { font-size: var(--font-size-h3); }

p {
  margin-bottom: var(--space-4);
}

a {
  color: var(--color-ocean-600);
  text-decoration: none;
  transition: all var(--duration-fast) var(--easing-default);
}

a:hover {
  color: var(--color-ocean-500);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-medium);
  line-height: 1;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  text-decoration: none;
  transition: all var(--duration-base) var(--easing-default);
  min-height: 48px;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-ocean-500);
  color: white;
  box-shadow: var(--shadow-card);
}

.btn-primary:hover {
  background-color: var(--color-ocean-600);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
  color: white;
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-ocean-600);
  border: 2px solid var(--color-ocean-500);
}

.btn-secondary:hover {
  background-color: var(--color-ocean-50);
  color: var(--color-ocean-500);
  transform: translateY(-2px);
}

.btn-large {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-body-large);
  min-height: 56px;
}

.btn-outline {
  background-color: transparent;
  color: var(--color-ocean-600);
  border: 2px solid var(--color-ocean-500);
}

.btn-outline:hover {
  background-color: var(--color-ocean-500);
  color: white;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--space-20);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-neutral-200);
  z-index: 1000;
  transition: all var(--duration-base) var(--easing-default);
}

.navbar.scrolled {
  box-shadow: var(--shadow-nav);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-12);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.logo-text {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-bold);
  color: var(--color-ocean-700);
  line-height: 1;
}

.logo-subtitle {
  font-size: var(--font-size-small);
  color: var(--color-neutral-600);
  font-weight: var(--font-weight-medium);
  letter-spacing: var(--letter-spacing-wide);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-link {
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-medium);
  color: var(--color-neutral-700);
  padding: var(--space-2) 0;
  position: relative;
  transition: all var(--duration-fast) var(--easing-default);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-ocean-500);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-ocean-500);
  transition: width var(--duration-base) var(--easing-default);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.lang-toggle {
  display: flex;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: transparent;
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-sm);
  color: var(--color-neutral-600);
  font-size: var(--font-size-small);
  cursor: pointer;
  transition: all var(--duration-fast) var(--easing-default);
}

.lang-toggle:hover {
  background-color: var(--color-ocean-50);
  border-color: var(--color-ocean-500);
  color: var(--color-ocean-600);
}

.lang-btn {
  padding: var(--space-1) var(--space-2);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--color-neutral-600);
  font-size: var(--font-size-small);
  cursor: pointer;
  transition: all var(--duration-fast) var(--easing-default);
}

.lang-btn:hover {
  background-color: var(--color-ocean-100);
  color: var(--color-ocean-600);
}

.lang-btn.active {
  background-color: var(--color-ocean-500);
  color: white;
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
}

.mobile-menu-toggle span {
  width: 24px;
  height: 2px;
  background-color: var(--color-neutral-700);
  transition: all var(--duration-base) var(--easing-default);
}

/* Page Header */
.page-header {
  position: relative;
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-page-header);
  color: white;
  margin-top: var(--space-20);
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 120' preserveAspectRatio='none'%3E%3Cpath d='M321.39,56.44c58-10.79,114.16-30.13,172-41.86,82.39-16.72,168.19-17.73,250.45-.39C823.78,31,906.67,72,985.66,92.83c70.05,18.48,146.53,26.09,214.34,3V0H0V27.35A600.21,600.21,0,0,0,321.39,56.44Z' fill='%230EA5E9' fill-opacity='0.1'%3E%3C/path%3E%3C/svg%3E") repeat-x;
  background-size: 1200px 200px;
  animation: wave 30s linear infinite;
}

.page-header-content {
  text-align: center;
  z-index: 1;
  position: relative;
}

.page-title {
  font-size: var(--font-size-h1);
  font-weight: var(--font-weight-bold);
  color: white;
  margin-bottom: var(--space-4);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.page-subtitle {
  font-size: var(--font-size-body-large);
  color: var(--color-ocean-100);
  opacity: 0.9;
}

/* Breadcrumb */
.breadcrumb {
  background-color: var(--color-neutral-100);
  padding: var(--space-4) 0;
  margin-top: var(--space-20);
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  list-style: none;
  margin: 0;
  padding: 0;
}

.breadcrumb-item {
  font-size: var(--font-size-small);
  color: var(--color-neutral-600);
}

.breadcrumb-item:not(:last-child)::after {
  content: '/';
  margin-left: var(--space-2);
  color: var(--color-neutral-400);
}

.breadcrumb-link {
  color: var(--color-ocean-600);
  text-decoration: none;
}

.breadcrumb-link:hover {
  color: var(--color-ocean-500);
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding-top: var(--space-20);
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: -1;
}

.hero-gradient {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-hero-gradient);
}

.hero-waves {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 200px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 120' preserveAspectRatio='none'%3E%3Cpath d='M321.39,56.44c58-10.79,114.16-30.13,172-41.86,82.39-16.72,168.19-17.73,250.45-.39C823.78,31,906.67,72,985.66,92.83c70.05,18.48,146.53,26.09,214.34,3V0H0V27.35A600.21,600.21,0,0,0,321.39,56.44Z' fill='%230EA5E9' fill-opacity='0.1'%3E%3C/path%3E%3C/svg%3E") repeat-x;
  background-size: 1200px 200px;
  animation: wave 20s linear infinite;
}

@keyframes wave {
  0% { transform: translateX(0); }
  100% { transform: translateX(-1200px); }
}

.hero-content {
  text-align: center;
  max-width: 800px;
  padding: 0 var(--space-8);
  z-index: 1;
}

.hero-title {
  margin-bottom: var(--space-6);
}

.title-cn {
  display: block;
  font-size: var(--font-size-hero);
  font-weight: var(--font-weight-bold);
  color: white;
  line-height: var(--line-height-tight);
  letter-spacing: var(--letter-spacing-tight);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
  margin-bottom: var(--space-4);
  white-space: nowrap;
}

.title-en {
  display: block;
  font-size: var(--font-size-h2);
  font-weight: var(--font-weight-medium);
  color: var(--color-ocean-100);
  letter-spacing: var(--letter-spacing-wide);
}

.hero-subtitle {
  font-size: var(--font-size-body-large);
  color: var(--color-ocean-50);
  margin-bottom: var(--space-4);
  font-weight: var(--font-weight-medium);
}

.hero-description {
  font-size: var(--font-size-body);
  color: var(--color-ocean-100);
  margin-bottom: var(--space-8);
  opacity: 0.9;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

/* Section Styles */
.section {
  padding: var(--space-24) 0;
}

.section.alt {
  background-color: var(--color-neutral-50);
}

.section-title {
  font-size: var(--font-size-h2);
  font-weight: var(--font-weight-bold);
  color: var(--color-neutral-900);
  margin-bottom: var(--space-6);
  text-align: left;
}

.section-title.centered {
  text-align: center;
}

.section-subtitle {
  font-size: var(--font-size-body-large);
  color: var(--color-neutral-600);
  text-align: center;
  margin-bottom: var(--space-12);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Stats Section */
.stats-section {
  padding: var(--space-16) 0;
  background-color: var(--bg-surface);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-8);
  max-width: 1000px;
  margin: 0 auto;
}

.stat-card {
  text-align: center;
  padding: var(--space-8);
  background-color: var(--color-neutral-50);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  transition: all var(--duration-base) var(--easing-default);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.stat-number {
  font-size: 48px;
  font-weight: var(--font-weight-bold);
  color: var(--color-ocean-500);
  line-height: 1;
  margin-bottom: var(--space-2);
}

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

/* About Section */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.about-text {
  padding-right: var(--space-8);
}

.about-description {
  font-size: var(--font-size-body-large);
  color: var(--color-neutral-600);
  margin-bottom: var(--space-8);
  line-height: var(--line-height-relaxed);
}

.company-values {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-6);
}

.value-item {
  text-align: center;
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  background-color: var(--color-neutral-50);
  transition: all var(--duration-base) var(--easing-default);
}

.value-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.value-icon {
  font-size: 32px;
  margin-bottom: var(--space-4);
}

.value-title {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-semibold);
  color: var(--color-ocean-700);
  margin-bottom: var(--space-2);
}

.value-desc {
  font-size: var(--font-size-body);
  color: var(--color-neutral-600);
  margin: 0;
}

.about-image {
  position: relative;
}

.about-img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

/* Timeline Component */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background-color: var(--color-ocean-500);
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--space-16);
  display: flex;
  align-items: center;
}

.timeline-item:nth-child(odd) {
  flex-direction: row;
}

.timeline-item:nth-child(even) {
  flex-direction: row-reverse;
}

.timeline-content {
  flex: 1;
  padding: var(--space-6);
  background-color: var(--bg-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  margin: 0 var(--space-8);
  position: relative;
}

.timeline-content::before {
  content: '';
  position: absolute;
  top: 50%;
  width: 0;
  height: 0;
  border: 10px solid transparent;
  transform: translateY(-50%);
}

.timeline-item:nth-child(odd) .timeline-content::before {
  right: -20px;
  border-left-color: var(--bg-surface);
}

.timeline-item:nth-child(even) .timeline-content::before {
  left: -20px;
  border-right-color: var(--bg-surface);
}

.timeline-year {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-bold);
  color: var(--color-ocean-500);
  margin-bottom: var(--space-2);
}

.timeline-title {
  font-size: var(--font-size-body-large);
  font-weight: var(--font-weight-semibold);
  color: var(--color-neutral-900);
  margin-bottom: var(--space-2);
}

.timeline-desc {
  font-size: var(--font-size-body);
  color: var(--color-neutral-600);
  margin: 0;
}

.timeline-dot {
  width: 16px;
  height: 16px;
  background-color: var(--color-ocean-500);
  border-radius: 50%;
  border: 4px solid var(--bg-surface);
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
}

/* Advantages Section */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-8);
}

.advantage-card {
  background-color: var(--bg-surface);
  padding: var(--space-12);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  text-align: center;
  transition: all var(--duration-base) var(--easing-default);
}

.advantage-card:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: var(--shadow-card-hover);
}

.advantage-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-6);
  background-color: var(--color-ocean-500);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.advantage-icon svg {
  width: 32px;
  height: 32px;
}

.advantage-title {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-semibold);
  color: var(--color-neutral-900);
  margin-bottom: var(--space-4);
}

.advantage-desc {
  font-size: var(--font-size-body);
  color: var(--color-neutral-600);
  line-height: var(--line-height-relaxed);
  margin: 0;
}

/* Products Section */
.products-filter {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  margin-bottom: var(--space-12);
  flex-wrap: wrap;
}

.filter-btn {
  padding: var(--space-3) var(--space-6);
  background-color: transparent;
  border: 2px solid var(--color-neutral-200);
  border-radius: var(--radius-md);
  color: var(--color-neutral-600);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--duration-base) var(--easing-default);
}

.filter-btn:hover,
.filter-btn.active {
  background-color: var(--color-ocean-500);
  border-color: var(--color-ocean-500);
  color: white;
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}

.product-card {
  background-color: var(--bg-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: all var(--duration-base) var(--easing-default);
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.product-image {
  position: relative;
  height: 250px;
  overflow: hidden;
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--easing-default);
}

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

.product-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(30, 58, 138, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--duration-base) var(--easing-default);
}

.product-card:hover .product-overlay {
  opacity: 1;
}

.product-info {
  padding: var(--space-6);
}

.product-name {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-semibold);
  color: var(--color-neutral-900);
  margin-bottom: var(--space-2);
}

.product-name-en {
  font-size: var(--font-size-small);
  color: var(--color-ocean-600);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--space-1);
}

.product-name-jp {
  font-size: var(--font-size-small);
  color: var(--color-neutral-600);
  font-style: italic;
  margin-bottom: var(--space-4);
}

.product-desc {
  font-size: var(--font-size-body);
  color: var(--color-neutral-600);
  line-height: var(--line-height-relaxed);
  margin: 0;
}

.products-cta {
  text-align: center;
  padding: var(--space-8);
  background-color: var(--color-ocean-50);
  border-radius: var(--radius-lg);
}

.products-cta p {
  font-size: var(--font-size-body-large);
  color: var(--color-neutral-600);
  margin-bottom: var(--space-4);
  margin-right: var(--space-4);
  display: inline-block;
}

/* Product Detail Page */
.product-detail {
  padding: var(--space-16) 0;
}

.product-detail-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

.product-gallery {
  position: sticky;
  top: var(--space-20);
}

.product-main-image {
  width: 100%;
  height: 400px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  margin-bottom: var(--space-4);
}

.product-specs {
  background-color: var(--color-neutral-50);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-8);
}

.specs-title {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-semibold);
  color: var(--color-neutral-900);
  margin-bottom: var(--space-4);
}

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

.specs-list li {
  display: flex;
  justify-content: space-between;
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-neutral-200);
}

.specs-list li:last-child {
  border-bottom: none;
}

.spec-label {
  font-weight: var(--font-weight-medium);
  color: var(--color-neutral-700);
}

.spec-value {
  color: var(--color-neutral-600);
}

.product-actions {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.product-title {
  font-size: var(--font-size-h1);
  font-weight: var(--font-weight-bold);
  color: var(--color-neutral-900);
  margin-bottom: var(--space-4);
}

.product-subtitle {
  font-size: var(--font-size-body-large);
  color: var(--color-neutral-600);
  margin-bottom: var(--space-6);
}

.product-description {
  font-size: var(--font-size-body);
  color: var(--color-neutral-600);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-8);
}

/* Contact Section */
.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
}

.contact-form {
  background-color: var(--bg-surface);
  padding: var(--space-12);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.form-title {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-semibold);
  color: var(--color-neutral-900);
  margin-bottom: var(--space-8);
}

.inquiry-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

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

.form-group label {
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-medium);
  color: var(--color-neutral-700);
  margin-bottom: var(--space-2);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-md);
  font-size: var(--font-size-body);
  font-family: inherit;
  transition: all var(--duration-fast) var(--easing-default);
  background-color: var(--bg-surface);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-ocean-500);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.contact-info {
  background-color: var(--bg-surface);
  padding: var(--space-12);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.info-title {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-semibold);
  color: var(--color-neutral-900);
  margin-bottom: var(--space-8);
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.contact-item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.contact-icon {
  width: 48px;
  height: 48px;
  background-color: var(--color-ocean-100);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-ocean-600);
  flex-shrink: 0;
}

.contact-icon svg {
  width: 24px;
  height: 24px;
}

.contact-text strong {
  display: block;
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semibold);
  color: var(--color-neutral-900);
  margin-bottom: var(--space-1);
}

.contact-text p {
  font-size: var(--font-size-body);
  color: var(--color-neutral-600);
  margin: 0;
}

.business-hours {
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-neutral-200);
}

.business-hours h4 {
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semibold);
  color: var(--color-neutral-900);
  margin-bottom: var(--space-2);
}

.business-hours p {
  font-size: var(--font-size-body);
  color: var(--color-neutral-600);
  margin: 0;
}

/* CTA Section */
.cta-section {
  background-color: var(--color-ocean-500);
  color: white;
  padding: var(--space-16) 0;
  text-align: center;
}

.cta-title {
  font-size: var(--font-size-h2);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-4);
}

.cta-description {
  font-size: var(--font-size-body-large);
  margin-bottom: var(--space-8);
  opacity: 0.9;
}

/* Footer */
.footer {
  background-color: var(--color-neutral-900);
  color: var(--color-neutral-400);
  padding: var(--space-16) 0 var(--space-8);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}

.footer-section h4 {
  color: white;
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-4);
}

.footer-logo .logo-text {
  color: var(--color-ocean-400);
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-bold);
}

.footer-logo .logo-subtitle {
  color: var(--color-neutral-400);
  font-size: var(--font-size-small);
}

.footer-desc {
  font-size: var(--font-size-body);
  line-height: var(--line-height-relaxed);
  margin: 0;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-links a {
  color: var(--color-neutral-400);
  font-size: var(--font-size-body);
  transition: color var(--duration-fast) var(--easing-default);
}

.footer-links a:hover {
  color: var(--color-ocean-400);
}

.footer-contact p {
  font-size: var(--font-size-body);
  margin-bottom: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-neutral-700);
}

.footer-bottom p {
  font-size: var(--font-size-caption);
  color: var(--color-neutral-500);
  margin: 0;
}

/* Modals */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}

.modal.active {
  display: flex;
}

.modal-content {
  background-color: var(--bg-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-modal);
  max-width: 500px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6);
  border-bottom: 1px solid var(--color-neutral-200);
}

.modal-header h3 {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-semibold);
  color: var(--color-neutral-900);
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  font-size: 24px;
  color: var(--color-neutral-600);
  cursor: pointer;
  padding: var(--space-2);
  transition: color var(--duration-fast) var(--easing-default);
}

.modal-close:hover {
  color: var(--color-neutral-900);
}

.modal-body {
  padding: var(--space-6);
}

.success-icon {
  width: 64px;
  height: 64px;
  background-color: var(--color-success-500);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  font-weight: var(--font-weight-bold);
  margin: 0 auto var(--space-6);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .container {
    padding: 0 var(--space-6);
  }
  
  .nav-container {
    padding: 0 var(--space-6);
  }
  
  .about-content,
  .contact-content,
  .product-detail-content {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }
  
  .product-gallery {
    position: static;
  }
}

@media (max-width: 768px) {
  /* Typography adjustments */
  :root {
    --font-size-hero: 48px;
    --font-size-h1: 36px;
    --font-size-h2: 28px;
    --font-size-h3: 24px;
  }
  
  .container {
    padding: 0 var(--space-4);
  }
  
  /* Navigation */
  .nav-menu {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .nav-cta {
    display: none;
  }
  
  /* Page Header */
  .page-header {
    height: 200px;
  }
  
  /* Hero */
  .hero {
    min-height: 80vh;
    padding-top: var(--space-16);
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
  
  .btn-large {
    width: 100%;
    max-width: 300px;
  }
  
  /* Stats */
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }
  
  .stat-card {
    padding: var(--space-6);
  }
  
  .stat-number {
    font-size: 36px;
  }
  
  /* Sections */
  .section {
    padding: var(--space-16) 0;
  }
  
  /* Company values */
  .company-values {
    grid-template-columns: 1fr;
  }
  
  /* Timeline */
  .timeline::before {
    left: var(--space-4);
  }
  
  .timeline-item {
    flex-direction: row !important;
    padding-left: var(--space-12);
  }
  
  .timeline-content {
    margin: 0;
  }
  
  .timeline-content::before {
    left: -20px !important;
    border-right-color: var(--bg-surface) !important;
    border-left-color: transparent !important;
  }
  
  .timeline-dot {
    left: var(--space-4);
    transform: translateX(-50%);
  }
  
  /* Advantages */
  .advantages-grid {
    grid-template-columns: 1fr;
  }
  
  /* Products */
  .products-filter {
    flex-direction: column;
    align-items: center;
  }
  
  .filter-btn {
    width: 200px;
  }
  
  .products-grid {
    grid-template-columns: 1fr;
  }
  
  /* Product Detail */
  .product-actions {
    flex-direction: column;
  }
  
  /* Footer */
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-actions {
    gap: var(--space-3);
  }
  
  .products-cta {
    text-align: center;
  }
  
  .products-cta p {
    display: block;
    margin-bottom: var(--space-4);
    margin-right: 0;
  }
}

/* Print Styles */
@media print {
  .navbar,
  .hero-actions,
  .products-cta,
  .footer {
    display: none;
  }
  
  .hero {
    min-height: auto;
    padding: var(--space-8) 0;
  }
  
  .section {
    padding: var(--space-8) 0;
  }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .hero-waves {
    animation: none;
  }
}

/* Focus Styles for Accessibility */
.btn:focus,
.nav-link:focus,
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus,
.filter-btn:focus {
  outline: 2px solid var(--color-ocean-500);
  outline-offset: 2px;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  :root {
    --color-neutral-50: #FFFFFF;
    --color-neutral-100: #F5F5F5;
    --color-neutral-200: #CCCCCC;
    --color-neutral-600: #333333;
    --color-neutral-900: #000000;
  }
}