/**
 * ============================================================================
 * Guangdong Bytelinc Tech - Custom Styles
 * ============================================================================
 * Company: 广东省字节林科技有限公司 (Guangdong Bytelinc Tech Co., Ltd)
 * 
 * This file contains custom styles for the corporate website.
 * Imports the design system variables.
 * ============================================================================
 */

/* Import Design System Variables */
@import url('variables.css');

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

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

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

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

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

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

ul, ol {
  list-style: none;
}

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

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--text-primary);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-3xl); }
h4 { font-size: var(--font-size-2xl); }
h5 { font-size: var(--font-size-xl); }
h6 { font-size: var(--font-size-lg); }

p {
  margin-bottom: var(--space-md);
  color: var(--text-secondary);
}

.text-bilingual {
  display: block;
}

.text-bilingual .zh {
  display: block;
  font-family: var(--font-family-zh);
}

.text-bilingual .en {
  display: block;
  font-size: 0.85em;
  color: var(--text-tertiary);
  margin-top: var(--space-xs);
}

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

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

.container-lg {
  max-width: var(--container-max-lg);
}

.container-sm {
  max-width: var(--container-max-md);
}

.section {
  padding: var(--section-padding-lg) 0;
}

.section-sm {
  padding: var(--section-padding-md) 0;
}

.section-lg {
  padding: var(--section-padding-xl) 0;
}

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

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-light);
  z-index: var(--z-fixed);
  transition: box-shadow var(--transition-base);
}

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

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

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

.logo img {
  height: 40px;
  width: auto;
}

.logo-text {
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-lg);
  color: var(--text-primary);
}

/* Navigation */
.nav {
  display: none;
}

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

.nav-link {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
  padding: var(--space-sm) 0;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
}

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

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

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

.dropdown-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.dropdown-toggle svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-fast);
}

.nav-dropdown:hover .dropdown-toggle svg {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background-color: var(--bg-primary);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-sm) 0;
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
}

.nav-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.dropdown-item {
  display: block;
  padding: var(--space-sm) var(--space-lg);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.dropdown-item:hover {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
  background: none;
  border: none;
  cursor: pointer;
}

.mobile-menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--text-primary);
  transition: all var(--transition-fast);
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Navigation */
.mobile-nav {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--bg-primary);
  padding: var(--space-lg);
  transform: translateX(100%);
  transition: transform var(--transition-base);
  z-index: var(--z-fixed);
  overflow-y: auto;
}

.mobile-nav.active {
  transform: translateX(0);
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.mobile-nav-link {
  display: block;
  padding: var(--space-md) 0;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-light);
}

.mobile-dropdown-menu {
  padding-left: var(--space-lg);
  margin-top: var(--space-sm);
}

.mobile-dropdown-item {
  display: block;
  padding: var(--space-sm) 0;
  font-size: var(--font-size-base);
  color: var(--text-secondary);
}

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

.footer {
  background-color: var(--bg-dark);
  color: var(--text-inverse);
  padding: var(--section-padding-lg) 0 var(--space-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer-brand {
  max-width: 300px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.footer-logo img {
  height: 48px;
  width: auto;
}

.footer-tagline {
  color: var(--color-gray-400);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-lg);
}

.footer-links-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

.footer-column h4 {
  color: var(--text-inverse);
  font-size: var(--font-size-base);
  margin-bottom: var(--space-md);
}

.footer-link {
  display: block;
  color: var(--color-gray-400);
  font-size: var(--font-size-sm);
  padding: var(--space-xs) 0;
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--color-yellow-500);
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  color: var(--color-gray-400);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-sm);
}

.footer-contact-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--color-yellow-500);
}

.footer-bottom {
  border-top: 1px solid var(--color-gray-700);
  padding-top: var(--space-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  text-align: center;
}

.footer-copyright {
  color: var(--color-gray-500);
  font-size: var(--font-size-sm);
}

.footer-icp {
  color: var(--color-gray-500);
  font-size: var(--font-size-xs);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--btn-padding-md);
  height: var(--btn-height-md);
  font-family: var(--font-family-base);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--btn-border-radius);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-primary {
  background-color: var(--interactive-primary);
  color: var(--color-black);
}

.btn-primary:hover {
  background-color: var(--interactive-primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-yellow);
}

.btn-secondary {
  background-color: var(--interactive-secondary);
  color: var(--text-inverse);
}

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

.btn-outline {
  background-color: transparent;
  color: var(--text-primary);
  border: 2px solid var(--border-medium);
}

.btn-outline:hover {
  border-color: var(--color-yellow-500);
  color: var(--color-yellow-700);
}

.btn-lg {
  height: var(--btn-height-lg);
  padding: var(--btn-padding-lg);
  font-size: var(--font-size-base);
}

.btn-sm {
  height: var(--btn-height-sm);
  padding: var(--btn-padding-sm);
  font-size: var(--font-size-xs);
}

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

.card {
  background-color: var(--bg-primary);
  border-radius: var(--card-border-radius);
  padding: var(--card-padding);
  box-shadow: var(--card-shadow);
  transition: all var(--transition-base);
  border: 1px solid var(--border-light);
}

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

.card-icon {
  width: 56px;
  height: 56px;
  background-color: var(--bg-accent);
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
}

.card-icon svg {
  width: 28px;
  height: 28px;
  color: var(--color-yellow-700);
}

.card-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-sm);
}

.card-description {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: 0;
}

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

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-accent) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 80%;
  height: 150%;
  background: radial-gradient(ellipse, rgba(254, 225, 87, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

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

.hero-title {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-lg);
  line-height: var(--line-height-snug);
}

.hero-title .zh {
  display: block;
  font-family: var(--font-family-zh);
}

.hero-title .en {
  display: block;
  font-size: 0.6em;
  color: var(--text-tertiary);
  margin-top: var(--space-sm);
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  max-width: 600px;
}

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

/* Decorative dots */
.hero-dots {
  position: absolute;
  right: 5%;
  top: 50%;
  transform: translateY(-50%);
  display: none;
}

.dot-pattern {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--color-yellow-500);
}

.dot:nth-child(2n) {
  background-color: var(--color-black);
}

/* =============================================================================
   SECTION HEADERS
   ========================================================================== */

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

.section-label {
  display: inline-block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-yellow-700);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wider);
  margin-bottom: var(--space-sm);
}

.section-title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-md);
}

.section-title .zh {
  display: block;
  font-family: var(--font-family-zh);
}

.section-title .en {
  display: block;
  font-size: 0.6em;
  color: var(--text-tertiary);
  margin-top: var(--space-xs);
}

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

/* =============================================================================
   GRID LAYOUTS
   ========================================================================== */

.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

.grid-4 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

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

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

.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.feature-content h3 {
  margin-bottom: var(--space-md);
}

.feature-content h3 .zh {
  display: block;
  font-family: var(--font-family-zh);
}

.feature-content h3 .en {
  display: block;
  font-size: 0.65em;
  color: var(--text-tertiary);
  margin-top: var(--space-xs);
}

.feature-list {
  margin-top: var(--space-lg);
}

.feature-list-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.feature-list-item svg {
  width: 20px;
  height: 20px;
  color: var(--color-yellow-600);
  flex-shrink: 0;
  margin-top: 2px;
}

.feature-visual {
  background-color: var(--bg-accent);
  border-radius: var(--border-radius-xl);
  padding: var(--space-2xl);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 300px;
}

/* =============================================================================
   CTA SECTION
   ========================================================================== */

.cta-section {
  background: linear-gradient(135deg, var(--color-yellow-500) 0%, var(--color-yellow-600) 100%);
  text-align: center;
  padding: var(--section-padding-xl) 0;
}

.cta-title {
  color: var(--color-black);
  margin-bottom: var(--space-md);
}

.cta-title .zh {
  display: block;
  font-family: var(--font-family-zh);
}

.cta-title .en {
  display: block;
  font-size: 0.6em;
  opacity: 0.7;
  margin-top: var(--space-xs);
}

.cta-description {
  color: rgba(0, 0, 0, 0.7);
  max-width: 600px;
  margin: 0 auto var(--space-xl);
}

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

.btn-cta {
  background-color: var(--color-black);
  color: var(--text-inverse);
}

.btn-cta:hover {
  background-color: var(--color-gray-800);
  transform: translateY(-2px);
}

.btn-cta-outline {
  background-color: transparent;
  color: var(--color-black);
  border: 2px solid var(--color-black);
}

.btn-cta-outline:hover {
  background-color: var(--color-black);
  color: var(--text-inverse);
}

/* =============================================================================
   TIMELINE
   ========================================================================== */

.timeline {
  position: relative;
  padding-left: var(--space-xl);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background-color: var(--border-medium);
}

.timeline-item {
  position: relative;
  padding-bottom: var(--space-2xl);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--space-xl) - 5px);
  top: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--color-yellow-500);
  border: 2px solid var(--bg-primary);
}

.timeline-year {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-yellow-700);
  margin-bottom: var(--space-xs);
}

.timeline-title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-xs);
}

.timeline-description {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: 0;
}

/* =============================================================================
   VALUES GRID
   ========================================================================== */

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

.value-card {
  text-align: center;
  padding: var(--space-xl);
  background-color: var(--bg-secondary);
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-base);
}

.value-card:hover {
  background-color: var(--bg-accent);
  transform: translateY(-4px);
}

.value-icon {
  width: 64px;
  height: 64px;
  background-color: var(--color-yellow-500);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-md);
}

.value-icon svg {
  width: 28px;
  height: 28px;
  color: var(--color-black);
}

.value-title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-sm);
}

.value-description {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: 0;
}

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

.product-card {
  background-color: var(--bg-primary);
  border-radius: var(--border-radius-xl);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: all var(--transition-base);
  border: 1px solid var(--border-light);
}

.product-card:hover {
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-8px);
}

.product-card-image {
  height: 200px;
  background-color: var(--bg-accent);
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-card-image img {
  max-height: 80%;
  max-width: 80%;
  object-fit: contain;
}

.product-card-content {
  padding: var(--space-lg);
}

.product-card-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-sm);
}

.product-card-title .zh {
  display: block;
  font-family: var(--font-family-zh);
}

.product-card-title .en {
  display: block;
  font-size: 0.7em;
  color: var(--text-tertiary);
  margin-top: var(--space-xs);
}

.product-card-description {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

.product-card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-yellow-700);
  transition: gap var(--transition-fast);
}

.product-card-link:hover {
  gap: var(--space-sm);
}

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

.simulator-card {
  background-color: var(--bg-primary);
  border-radius: var(--border-radius-xl);
  padding: var(--space-xl);
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border-light);
  transition: all var(--transition-base);
}

.simulator-card:hover {
  box-shadow: var(--card-shadow-hover);
  border-color: var(--color-yellow-400);
}

.simulator-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.simulator-icon {
  width: 64px;
  height: 64px;
  background-color: var(--bg-accent);
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.simulator-icon svg {
  width: 32px;
  height: 32px;
  color: var(--color-yellow-700);
}

.simulator-title {
  font-size: var(--font-size-xl);
}

.simulator-title .zh {
  display: block;
  font-family: var(--font-family-zh);
}

.simulator-title .en {
  display: block;
  font-size: 0.7em;
  color: var(--text-tertiary);
  margin-top: var(--space-xs);
}

.simulator-section {
  margin-bottom: var(--space-md);
}

.simulator-section:last-child {
  margin-bottom: 0;
}

.simulator-section-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.simulator-section-text {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: 0;
}

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

.industry-card {
  position: relative;
  background-color: var(--bg-primary);
  border-radius: var(--border-radius-xl);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: all var(--transition-base);
}

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

.industry-card-image {
  height: 200px;
  background: linear-gradient(135deg, var(--color-yellow-400) 0%, var(--color-yellow-600) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.industry-card-image svg {
  width: 64px;
  height: 64px;
  color: var(--color-black);
}

.industry-card-content {
  padding: var(--space-lg);
}

.industry-card-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-sm);
}

.industry-card-title .zh {
  display: block;
  font-family: var(--font-family-zh);
}

.industry-card-title .en {
  display: block;
  font-size: 0.7em;
  color: var(--text-tertiary);
  margin-top: var(--space-xs);
}

.industry-card-description {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

.industry-features {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.industry-feature-tag {
  display: inline-block;
  padding: var(--space-xs) var(--space-sm);
  background-color: var(--bg-accent);
  border-radius: var(--border-radius-full);
  font-size: var(--font-size-xs);
  color: var(--color-yellow-800);
}

/* =============================================================================
   CONTACT PAGE
   ========================================================================== */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
}

.contact-info-card {
  background-color: var(--bg-secondary);
  border-radius: var(--border-radius-xl);
  padding: var(--space-xl);
}

.contact-info-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-lg);
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.contact-info-icon {
  width: 48px;
  height: 48px;
  background-color: var(--bg-accent);
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-info-icon svg {
  width: 24px;
  height: 24px;
  color: var(--color-yellow-700);
}

.contact-info-content h4 {
  font-size: var(--font-size-base);
  margin-bottom: var(--space-xs);
}

.contact-info-content p {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: 0;
}

.contact-map {
  background-color: var(--bg-tertiary);
  border-radius: var(--border-radius-lg);
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: var(--space-lg);
}

.contact-map-placeholder {
  text-align: center;
  color: var(--text-muted);
}

.contact-form-card {
  background-color: var(--bg-primary);
  border-radius: var(--border-radius-xl);
  padding: var(--space-xl);
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border-light);
}

.contact-form-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-lg);
}

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

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.form-input,
.form-textarea {
  width: 100%;
  height: var(--input-height);
  padding: var(--input-padding);
  border: var(--input-border);
  border-radius: var(--input-border-radius);
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-yellow-500);
}

.form-textarea {
  height: auto;
  min-height: 120px;
  padding-top: var(--space-sm);
  padding-bottom: var(--space-sm);
  resize: vertical;
}

/* WeChat Section */
.wechat-section {
  background-color: var(--bg-accent);
  border-radius: var(--border-radius-xl);
  padding: var(--space-xl);
  text-align: center;
}

.wechat-qr {
  width: 160px;
  height: 160px;
  background-color: var(--bg-primary);
  border-radius: var(--border-radius-lg);
  margin: 0 auto var(--space-md);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
}

.wechat-qr-placeholder {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

.wechat-title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-xs);
}

.wechat-description {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: 0;
}

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

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* =============================================================================
   RESPONSIVE STYLES
   ========================================================================== */

@media (min-width: 640px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .values-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-links-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 768px) {
  .nav {
    display: block;
  }
  
  .mobile-menu-toggle {
    display: none;
  }
  
  .hero-title {
    font-size: var(--font-size-5xl);
  }
  
  .section-title {
    font-size: var(--font-size-4xl);
  }
  
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .feature-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .contact-grid {
    grid-template-columns: 1fr 1.5fr;
  }
  
  .footer-grid {
    grid-template-columns: 1.5fr 2fr;
  }
  
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--container-padding-lg);
  }
  
  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .values-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .hero-dots {
    display: block;
  }
}

@media (min-width: 1280px) {
  .container {
    max-width: var(--container-max-2xl);
  }
}

/* =============================================================================
   UTILITY CLASSES
   ========================================================================== */

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

.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

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

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-black);
  color: var(--text-inverse);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--border-radius-md);
  z-index: var(--z-tooltip);
  transition: top var(--transition-fast);
}

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