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

:root {
  /* Colors */
  --primary-color: #2c5aa0;
  --secondary-color: #f39c12;
  --accent-color: #e74c3c;
  --dark-color: #2c3e50;
  --light-color: #ecf0f1;
  --white: #ffffff;
  --gray-100: #f8f9fa;
  --gray-200: #e9ecef;
  --gray-300: #dee2e6;
  --gray-400: #ced4da;
  --gray-500: #adb5bd;
  --gray-600: #6c757d;
  --gray-700: #495057;
  --gray-800: #343a40;
  --gray-900: #212529;
  
  /* Fonts */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'Playfair Display', serif;
  
  /* Spacing */
  --section-padding: 100px 0;
  --container-padding: 0 20px;
  --border-radius: 8px;
  --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  line-height: 1.6;
  color: var(--dark-color);
  overflow-x: hidden;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 1rem;
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.8rem; }
h4 { font-size: 1.5rem; }

p {
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 12px 30px;
  border: none;
  border-radius: var(--border-radius);
  text-decoration: none;
  font-weight: 500;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
  justify-content: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), #3498db);
  color: var(--white);
  box-shadow: 0 4px 15px rgba(44, 90, 160, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(44, 90, 160, 0.4);
}

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

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

/* Hero section button override */
.hero .btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
}

.hero .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.9);
  color: var(--primary-color);
  border-color: var(--white);
  transform: translateY(-2px);
}

/* PDF Download Button */
.pdf-download-container {
  margin-top: 25px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.btn-pdf-download {
  background: linear-gradient(135deg, var(--accent-color), #ff6b6b);
  color: var(--white);
  box-shadow: 0 4px 15px rgba(231, 76, 60, 0.3);
  padding: 12px 25px;
  font-weight: 500;
  border-radius: var(--border-radius);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: var(--transition);
}

.btn-pdf-download:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(231, 76, 60, 0.4);
  background: linear-gradient(135deg, #ff6b6b, var(--accent-color));
}

.btn-pdf-download i {
  font-size: 1.1rem;
}

.pdf-download-desc {
  font-size: 0.9rem;
  color: var(--dark-color);
  text-align: center;
  max-width: 300px;
  margin: 0 auto;
  font-weight: 500;
  opacity: 0.85;
}

.btn-full {
  width: 100%;
}

/* Section Headers */
.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-title {
  color: var(--dark-color);
  margin-bottom: 1rem;
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  border-radius: 2px;
}

.section-subtitle {
  font-size: 1.2rem;
  color: var(--gray-600);
  max-width: 600px;
  margin: 0 auto;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  padding: 15px 0;
  transition: var(--transition);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.98);
  padding: 10px 0;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-logo img {
  width: 45px;
  height: 45px;
  border-radius: 50%;
  object-fit: cover;
}

.nav-brand {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--primary-color);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 30px;
  align-items: center;
}

.nav-link {
  text-decoration: none;
  color: var(--dark-color);
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--border-radius);
  transition: var(--transition);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-color);
  background: rgba(44, 90, 160, 0.1);
}

/* Language Switcher */
.language-btn {
  background: none;
  border: none;
  color: var(--dark-color);
  cursor: pointer;
  font-size: 0.9rem;
  padding: 8px 16px;
  border-radius: var(--border-radius);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 5px;
}

.language-btn:hover {
  color: var(--primary-color);
  background: rgba(44, 90, 160, 0.1);
}

.language-btn i {
  font-size: 1rem;
}

/* Mobile Navigation */
.nav-hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  padding: 5px;
}

.nav-hamburger .bar {
  width: 25px;
  height: 3px;
  background: var(--dark-color);
  margin: 3px 0;
  transition: var(--transition);
  border-radius: 2px;
}

/* Hero Section - 全新现代化设计 */
.hero {
  height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  color: var(--white);
  overflow: hidden;
  background: 
    linear-gradient(135deg, 
      rgba(25, 42, 65, 0.75) 0%, 
      rgba(52, 73, 94, 0.7) 25%, 
      rgba(69, 90, 120, 0.65) 50%, 
      rgba(95, 115, 140, 0.6) 75%, 
      rgba(120, 140, 165, 0.55) 100%
    ),
    url('assets/front_20.jpg');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

/* 动态背景装饰元素 */
.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 15% 25%, rgba(255, 193, 7, 0.08) 0%, transparent 35%),
    radial-gradient(circle at 85% 20%, rgba(52, 152, 219, 0.06) 0%, transparent 40%),
    radial-gradient(circle at 50% 80%, rgba(155, 89, 182, 0.04) 0%, transparent 30%),
    radial-gradient(circle at 25% 70%, rgba(255, 255, 255, 0.03) 0%, transparent 25%),
    linear-gradient(45deg, 
      transparent 25%, 
      rgba(69, 90, 120, 0.02) 45%, 
      transparent 55%, 
      rgba(255, 193, 7, 0.02) 75%,
      transparent 85%
    );
  animation: heroBackgroundFloat 20s ease-in-out infinite;
  z-index: 1;
}

.hero::after {
  content: '';
  position: absolute;
  top: 20%;
  right: 15%;
  width: 350px;
  height: 350px;
  background: 
    conic-gradient(from 60deg, 
      rgba(255, 193, 7, 0.05) 0deg,
      transparent 80deg,
      rgba(52, 152, 219, 0.04) 160deg,
      transparent 240deg,
      rgba(155, 89, 182, 0.03) 320deg,
      transparent 360deg
    );
  border-radius: 50%;
  filter: blur(4px);
  animation: heroRotateFloat 30s linear infinite;
  z-index: 1;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    linear-gradient(135deg, 
      rgba(25, 42, 65, 0.05) 0%, 
      rgba(52, 73, 94, 0.03) 30%, 
      rgba(95, 115, 140, 0.04) 70%, 
      rgba(120, 140, 165, 0.02) 100%
    );
  backdrop-filter: blur(0.5px);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 3;
  width: 100%;
  display: flex;
  align-items: center;
  min-height: 100vh;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}

.hero-text {
  text-align: left;
  animation: fadeInUp 1s ease-out;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  animation: fadeInUp 1s ease-out 0.3s both;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  line-height: 1.2;
  background: linear-gradient(135deg, #ffffff, #e8f4f8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.4rem;
  margin-bottom: 2rem;
  color: rgba(255, 255, 255, 0.85);
  font-weight: 500;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.hero-description {
  font-size: 1.1rem;
  line-height: 1.7;
  margin-bottom: 3rem;
  color: rgba(255, 255, 255, 0.8);
  text-shadow: 0 1px 5px rgba(0, 0, 0, 0.2);
}

.hero-description p {
  margin-bottom: 1rem;
}

.hero-buttons {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

/* Hero视觉元素 - 动态几何设计 */
.hero-visual-element {
  width: 450px;
  height: 450px;
  position: relative;
  background: 
    linear-gradient(135deg, 
      rgba(255, 255, 255, 0.08), 
      rgba(255, 255, 255, 0.03)
    );
  backdrop-filter: blur(25px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 30px;
  box-shadow: 
    0 25px 80px rgba(44, 90, 160, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
  overflow: hidden;
  animation: heroElementFloat 8s ease-in-out infinite;
}

/* 旋转的渐变背景 */
.hero-visual-element::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: 
    conic-gradient(from 0deg, 
      rgba(243, 156, 18, 0.12) 0deg,
      transparent 60deg,
      rgba(52, 152, 219, 0.10) 120deg,
      transparent 180deg,
      rgba(44, 90, 160, 0.08) 240deg,
      transparent 300deg
    );
  animation: heroElementRotate 20s linear infinite;
  z-index: 1;
}

/* 内部动态几何形状 */
.hero-visual-element::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 200px;
  height: 200px;
  background: 
    radial-gradient(circle at center,
      rgba(255, 255, 255, 0.15) 0%,
      rgba(243, 156, 18, 0.08) 30%,
      transparent 70%
    );
  border-radius: 50%;
  animation: heroCenterPulse 6s ease-in-out infinite;
  z-index: 2;
}

/* Hero Logo容器 */
.hero-logo-container {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 10;
  width: 250px;
  height: 250px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 50%;
  box-shadow: 
    0 25px 50px rgba(44, 90, 160, 0.25),
    inset 0 1px 0 rgba(255, 255, 255, 1),
    0 0 0 1px rgba(44, 90, 160, 0.1);
  animation: heroLogoFloat 6s ease-in-out infinite;
}

.hero-logo-container::before {
  content: '';
  position: absolute;
  inset: -10px;
  background: 
    conic-gradient(from 45deg, 
      rgba(243, 156, 18, 0.3) 0deg,
      transparent 90deg,
      rgba(52, 152, 219, 0.2) 180deg,
      transparent 270deg
    );
  border-radius: 50%;
  filter: blur(15px);
  animation: heroLogoGlow 8s linear infinite;
  z-index: -1;
}

.hero-logo {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid rgba(44, 90, 160, 0.1);
  box-shadow: 
    0 15px 35px rgba(0, 0, 0, 0.1),
    inset 0 2px 4px rgba(255, 255, 255, 0.3);
  transition: all 0.4s ease;
  animation: heroLogoRotate 20s linear infinite;
}

.hero-logo:hover {
  transform: scale(1.05);
  box-shadow: 
    0 20px 50px rgba(44, 90, 160, 0.2),
    inset 0 2px 4px rgba(255, 255, 255, 0.5);
}

/* 动态几何装饰层 */
.hero-geometry {
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
}

.hero-shape {
  position: absolute;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  animation: heroShapeFloat 12s ease-in-out infinite;
}

.hero-shape:nth-child(1) {
  width: 60px;
  height: 60px;
  top: 15%;
  left: 20%;
  background: rgba(243, 156, 18, 0.15);
  animation-delay: 0s;
}

.hero-shape:nth-child(2) {
  width: 80px;
  height: 80px;
  top: 60%;
  right: 15%;
  background: rgba(52, 152, 219, 0.12);
  animation-delay: 2s;
}

.hero-shape:nth-child(3) {
  width: 40px;
  height: 40px;
  bottom: 25%;
  left: 60%;
  background: rgba(255, 255, 255, 0.18);
  animation-delay: 4s;
}

.hero-shape:nth-child(4) {
  width: 100px;
  height: 100px;
  top: 35%;
  left: 10%;
  background: rgba(44, 90, 160, 0.08);
  border-radius: 20px;
  animation-delay: 1s;
}

.hero-shape:nth-child(5) {
  width: 50px;
  height: 50px;
  top: 70%;
  right: 40%;
  background: linear-gradient(45deg, rgba(243, 156, 18, 0.12), rgba(52, 152, 219, 0.08));
  border-radius: 25%;
  animation-delay: 3s;
}

/* 装饰性元素 */
.hero-decoration {
  position: absolute;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  animation: heroDecoFloat 10s ease-in-out infinite;
}

.hero-decoration:nth-child(1) {
  top: 10%;
  left: 10%;
  width: 80px;
  height: 80px;
  animation-delay: 0s;
}

.hero-decoration:nth-child(2) {
  top: 60%;
  left: 20%;
  width: 120px;
  height: 120px;
  animation-delay: 2s;
}

.hero-decoration:nth-child(3) {
  top: 30%;
  right: 15%;
  width: 60px;
  height: 60px;
  animation-delay: 4s;
}

.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  animation: bounce 2s infinite;
}

.scroll-arrow {
  width: 30px;
  height: 30px;
  border-right: 2px solid rgba(255, 255, 255, 0.8);
  border-bottom: 2px solid rgba(255, 255, 255, 0.8);
  transform: rotate(45deg);
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

/* About Section */
.about {
  padding: var(--section-padding);
  background: var(--gray-100);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-item {
  display: flex;
  gap: 20px;
  margin-bottom: 40px;
  padding: 30px;
  background: var(--white);
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  transition: var(--transition);
}

.about-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.about-icon {
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.5rem;
}

.about-info h3 {
  margin-bottom: 12px;
  color: var(--dark-color);
}

.about-info p {
  color: var(--gray-600);
  line-height: 1.7;
}

.about-image {
  position: relative;
}

.about-image img {
  width: 100%;
  height: 500px;
  object-fit: cover;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

/* Services Section */
.services {
  padding: var(--section-padding);
  background: var(--white);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.service-card {
  text-align: center;
  padding: 40px 30px;
  background: var(--white);
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  transition: var(--transition);
  border: 1px solid var(--gray-200);
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
  border-color: var(--primary-color);
}

.service-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 25px;
  color: var(--white);
  font-size: 2rem;
}

.service-card h3 {
  margin-bottom: 15px;
  color: var(--dark-color);
}

.service-card p {
  color: var(--gray-600);
  line-height: 1.7;
}

/* Portfolio Section - 增强的动态背景版本 */
.portfolio {
  padding: var(--section-padding);
  background: 
    linear-gradient(135deg, #f8fafc 0%, #e8f4f8 25%, #f0f8ff 50%, #ffffff 100%);
  position: relative;
  overflow: hidden;
}

/* Portfolio动态背景装饰 */
.portfolio::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 30% 20%, rgba(44, 90, 160, 0.05) 0%, transparent 60%),
    radial-gradient(circle at 70% 80%, rgba(243, 156, 18, 0.04) 0%, transparent 50%),
    radial-gradient(circle at 20% 70%, rgba(52, 152, 219, 0.03) 0%, transparent 40%);
  animation: floatingOrb 22s ease-in-out infinite;
  z-index: 1;
  pointer-events: none;
}

.portfolio::after {
  content: '';
  position: absolute;
  top: 20%;
  right: 10%;
  width: 250px;
  height: 250px;
  background: 
    conic-gradient(from 0deg, 
      rgba(44, 90, 160, 0.08) 0deg,
      transparent 90deg,
      rgba(243, 156, 18, 0.06) 180deg,
      transparent 270deg
    );
  border-radius: 50%;
  filter: blur(80px);
  animation: portfolioBackgroundMove 28s ease-in-out infinite;
  z-index: 1;
  pointer-events: none;
}

.portfolio .container {
  position: relative;
  z-index: 2;
}

.portfolio-filter {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-bottom: 50px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 12px 24px;
  border: 2px solid var(--primary-color);
  background: transparent;
  color: var(--primary-color);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease;
  font-weight: 500;
}

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

/* 更流畅的响应式网格 */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 25px;
  align-items: start;
}

.portfolio-item {
  background: var(--white);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  height: 100%;
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
}

.portfolio-item:hover {
  transform: translateY(-12px) scale(1.02);
  box-shadow: 0 20px 60px rgba(44, 90, 160, 0.15);
  border-color: rgba(44, 90, 160, 0.2);
}

.portfolio-image {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--gray-100), var(--gray-200));
  flex-shrink: 0;
  height: 200px;
}

.portfolio-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: all 0.4s ease;
}

.portfolio-item:hover .portfolio-image img {
  transform: scale(1.08);
  filter: brightness(1.1);
}

/* 项目状态标签 - 现代化设计 */
.project-status {
  position: absolute;
  top: 16px;
  right: 16px;
  color: var(--white);
  padding: 6px 16px;
  border-radius: 25px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  z-index: 3;
}

/* 已完成状态 */
.project-status.completed {
  background: linear-gradient(135deg, #22d3ee, #06b6d4);
  box-shadow: 0 4px 20px rgba(34, 211, 238, 0.4);
}

/* 进行中状态 */
.project-status.progress {
  background: linear-gradient(135deg, #f59e0b, #d97706);
  box-shadow: 0 4px 20px rgba(245, 158, 11, 0.3);
}

/* 计划中状态 */
.project-status.planned {
  background: linear-gradient(135deg, #8b5cf6, #7c3aed);
  box-shadow: 0 4px 20px rgba(139, 92, 246, 0.3);
}

/* 暂停状态 */
.project-status.paused {
  background: linear-gradient(135deg, #64748b, #475569);
  box-shadow: 0 4px 20px rgba(100, 116, 139, 0.3);
}

/* 项目叠加渐变效果 */
.portfolio-image::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.4), transparent);
  z-index: 1;
  pointer-events: none;
}

/* 移除 hover 快速信息叠加 */

.portfolio-info {
  padding: 24px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(248, 250, 252, 0.9));
  position: relative;
}

.portfolio-info h3 {
  font-size: 1.2rem;
  margin-bottom: 12px;
  line-height: 1.3;
  color: var(--dark-color);
  font-weight: 600;
  text-align: center;
}

.project-category {
  display: none; /* 暂时隐藏分类标签，突出核心信息 */
}

.project-details {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.85rem;
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid rgba(0, 0, 0, 0.05);
}

/* 项目信息行 - 清爽卡片风格 */
.project-info-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  background: var(--white);
  border-radius: 8px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  transition: all 0.2s ease;
}

.project-info-item:hover {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transform: translateY(-1px);
}

.project-info-left {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
}

.project-info-icon {
  width: 20px;
  height: 20px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  color: var(--white);
  flex-shrink: 0;
}

.project-info-label {
  font-size: 0.75rem;
  color: var(--gray-600);
  font-weight: 500;
  flex: 1;
}

.project-info-value {
  font-size: 0.8rem;
  color: var(--dark-color);
  font-weight: 600;
  text-align: right;
}

/* 公司信息 */
.project-company .project-info-icon {
  background: linear-gradient(135deg, var(--primary-color), #3498db);
}

/* 材料信息 */
.project-materials .project-info-icon {
  background: linear-gradient(135deg, var(--secondary-color), #e67e22);
}

/* 完成日期 */
.project-completion .project-info-icon {
  background: linear-gradient(135deg, #22c55e, #16a34a);
}

/* 价值信息 */
.project-value .project-info-icon {
  background: linear-gradient(135deg, #fbbf24, #f59e0b);
}

/* 移除旧的样式，现在使用新的 detail-value 样式 */

/* 删除复杂按钮，简化交互 */
.portfolio-buttons {
  display: none;
}

/* Video Play Button - 简化版本 */
.portfolio-video {
  position: relative;
}

.video-play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 50px;
  height: 50px;
  background: rgba(44, 90, 160, 0.8);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.2rem;
  z-index: 2;
  border: 2px solid var(--white);
}

/* Contact Section */
.contact {
  padding: var(--section-padding);
  background: var(--white);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  max-width: 1100px;
  margin: 0 auto;
}

.contact-item {
  display: flex;
  gap: 18px;
  align-items: center;
  margin-bottom: 30px;
  padding: 22px 20px;
  background: var(--gray-100);
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.contact-item:hover {
  background: var(--white);
  box-shadow: var(--box-shadow);
  transform: translateY(-3px);
}

.contact-icon {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.3rem;
}

.contact-details h3 {
  margin-bottom: 6px;
  color: var(--dark-color);
  font-size: 1.1rem;
}

.contact-details p {
  margin: 0;
  color: var(--gray-600);
  font-size: 0.95rem;
}

.contact-details a {
  color: var(--primary-color);
  text-decoration: none;
  transition: var(--transition);
}

.contact-details a:hover {
  color: var(--secondary-color);
}

.contact-form-wrapper {
  background: var(--gray-100);
  padding: 35px 30px;
  border-radius: var(--border-radius);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  position: relative;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 15px 20px;
  border: 2px solid var(--gray-300);
  border-radius: var(--border-radius);
  font-size: 1rem;
  font-family: var(--font-primary);
  transition: var(--transition);
  background: var(--white);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(44, 90, 160, 0.1);
}

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

/* Footer */
.footer {
  background: var(--dark-color);
  color: var(--white);
  padding: 60px 0 20px;
}

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

.footer-logo {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.footer-logo img {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  object-fit: cover;
}

.footer-logo h3 {
  color: var(--white);
  margin-bottom: 10px;
}

.footer-logo p {
  color: var(--gray-400);
  line-height: 1.6;
}

.footer-links h4,
.footer-contact h4 {
  color: var(--white);
  margin-bottom: 20px;
  font-size: 1.2rem;
}

.footer-links ul,
.footer-contact ul {
  list-style: none;
}

.footer-links li,
.footer-contact li {
  margin-bottom: 12px;
}

.footer-links a {
  color: var(--gray-400);
  text-decoration: none;
  transition: var(--transition);
}

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

.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--gray-400);
}

.footer-contact i {
  color: var(--primary-color);
  width: 20px;
}

.footer-bottom {
  border-top: 1px solid var(--gray-700);
  padding-top: 20px;
  text-align: center;
  color: var(--gray-400);
}

/* Modal - 现代化弹窗设计 */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.75);
  z-index: 2000;
  backdrop-filter: blur(8px);
  animation: fadeIn 0.3s ease-out;
  padding: 20px;
}

.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: transparent;
  cursor: pointer;
  z-index: -1;
}

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

.modal-content {
  background: var(--white);
  border-radius: 20px;
  max-width: 600px;
  width: 95%;
  max-height: 85vh;
  overflow: hidden;
  animation: modalSlideIn 0.4s cubic-bezier(0.4, 0.0, 0.2, 1);
  box-shadow: 
    0 25px 50px rgba(0, 0, 0, 0.25),
    0 0 0 1px rgba(255, 255, 255, 0.1);
  position: relative;
}

.modal-header {
  position: relative;
  padding: 0;
  border: none;
  overflow: hidden;
}

.modal-project-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}

.modal-close {
  position: absolute;
  top: 15px;
  right: 15px;
  background: rgba(0, 0, 0, 0.6);
  border: none;
  font-size: 1.1rem;
  color: var(--white);
  cursor: pointer;
  width: 35px;
  height: 35px;
  border-radius: 50%;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(10px);
  z-index: 10;
}

.modal-close:hover {
  background: rgba(0, 0, 0, 0.8);
  transform: scale(1.1);
}

.modal-body {
  padding: 25px;
  overflow-y: auto;
  max-height: calc(85vh - 200px);
}

.modal-project-title {
  font-size: 1.4rem;
  color: var(--dark-color);
  margin-bottom: 20px;
  font-weight: 600;
  text-align: center;
}

.modal-project-info {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 25px;
}

.modal-info-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 15px;
  background: var(--gray-100);
  border-radius: 10px;
  transition: var(--transition);
}

.modal-info-item:hover {
  background: var(--white);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  transform: translateY(-1px);
}

.modal-info-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--white);
  flex-shrink: 0;
}

.modal-info-content {
  flex: 1;
}

.modal-info-label {
  font-size: 0.7rem;
  color: var(--gray-600);
  margin-bottom: 2px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.modal-info-value {
  font-size: 0.85rem;
  color: var(--dark-color);
  font-weight: 600;
  line-height: 1.2;
}

/* 弹窗信息项图标颜色 */
.modal-info-company .modal-info-icon {
  background: linear-gradient(135deg, var(--primary-color), #3498db);
}

.modal-info-materials .modal-info-icon {
  background: linear-gradient(135deg, var(--secondary-color), #e67e22);
}

.modal-info-completion .modal-info-icon {
  background: linear-gradient(135deg, #22c55e, #16a34a);
}

.modal-info-value .modal-info-icon {
  background: linear-gradient(135deg, #fbbf24, #f59e0b);
}

/* 媒体展示区域 */
.modal-media-section {
  margin-top: 20px;
}

.modal-media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  margin-top: 15px;
}

.modal-media-item {
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  background: var(--gray-100);
  aspect-ratio: 16/9;
  cursor: pointer;
  transition: var(--transition);
}

.modal-media-item:hover {
  transform: scale(1.02);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

.modal-media-item img,
.modal-media-item video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.modal-video-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 40px;
  height: 40px;
  background: rgba(0, 0, 0, 0.7);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.2rem;
  backdrop-filter: blur(5px);
}

.modal-media-section h4 {
  color: var(--dark-color);
  font-size: 1rem;
  margin-bottom: 10px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.modal-media-section h4 i {
  color: var(--primary-color);
  font-size: 0.9rem;
}

.modal-overlay-close {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: -1;
}

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

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

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(50px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  40% {
    transform: translateX(-50%) translateY(-10px);
  }
  60% {
    transform: translateX(-50%) translateY(-5px);
  }
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: scale(0.7) translateY(100px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  :root {
    --section-padding: 35px 0;
    --container-padding: 0 15px;
  }

  /* Typography - 更合理的移动端字体大小 */
  h1 { font-size: 2.2rem; }
  h2 { font-size: 1.8rem; }
  h3 { font-size: 1.3rem; }
  h4 { font-size: 1.1rem; }
  
  p {
    font-size: 1rem;
    line-height: 1.6;
  }

  /* Navigation */
  .navbar {
    padding: 10px 0;
  }
  
  .nav-logo img {
    width: 35px;
    height: 35px;
  }
  
  .nav-brand {
    font-size: 1.2rem;
  }
  
  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: var(--white);
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding-top: 30px;
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    gap: 20px;
  }

  .nav-menu.active {
    left: 0;
  }

  .nav-hamburger {
    display: flex;
  }

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

  .nav-hamburger.active .bar:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
  }

  .nav-hamburger.active .bar:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
  }

  /* Hero - 移动端温暖中性色调 */
  .hero {
    height: 100vh;
    min-height: 600px;
    /* 使用温暖的灰褐色调，避免蓝色 */
    background: 
      linear-gradient(135deg, 
        rgba(60, 50, 40, 0.75) 0%, 
        rgba(80, 70, 55, 0.7) 25%, 
        rgba(100, 88, 70, 0.65) 50%, 
        rgba(120, 108, 90, 0.6) 75%, 
        rgba(140, 128, 110, 0.55) 100%
      ),
      url('assets/front_20.jpg') !important;
    background-size: cover !important;
    background-position: center !important;
    background-attachment: scroll !important;
  }
  
  /* 移动端装饰元素，使用温暖中性色调 */
  .hero::before {
    background: 
      radial-gradient(circle at 15% 25%, rgba(200, 150, 100, 0.08) 0%, transparent 35%),
      radial-gradient(circle at 85% 20%, rgba(180, 140, 90, 0.06) 0%, transparent 40%),
      radial-gradient(circle at 50% 80%, rgba(160, 130, 80, 0.04) 0%, transparent 30%),
      radial-gradient(circle at 25% 70%, rgba(255, 255, 255, 0.03) 0%, transparent 25%),
      linear-gradient(45deg, 
        transparent 25%, 
        rgba(120, 100, 80, 0.02) 45%, 
        transparent 55%, 
        rgba(200, 150, 100, 0.02) 75%,
        transparent 85%
      ) !important;
  }
  
  .hero::after {
    background: 
      conic-gradient(from 60deg, 
        rgba(200, 150, 100, 0.05) 0deg,
        transparent 80deg,
        rgba(180, 140, 90, 0.04) 160deg,
        transparent 240deg,
        rgba(160, 130, 80, 0.03) 320deg,
        transparent 360deg
      ) !important;
    width: 350px;
    height: 350px;
    top: 20%;
    right: 15%;
    filter: blur(4px);
  }
  
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 0 20px;
    text-align: center;
  }
  
  .hero-text {
    text-align: center;
  }
  
  .hero-title {
    font-size: 2.2rem;
    margin-bottom: 0.8rem;
    line-height: 1.1;
  }

  .hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
  }

  .hero-description {
    font-size: 0.95rem;
    margin-bottom: 2rem;
  }

  .hero-buttons {
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
  }
  
  .hero-buttons .btn {
    padding: 10px 25px;
    font-size: 0.95rem;
    min-width: 140px;
  }
  
  /* Hero视觉元素移动端优化 */
  .hero-visual {
    order: -1;
    margin-bottom: 20px;
  }
  
  .hero-visual-element {
    width: 280px;
    height: 280px;
    margin: 0 auto;
  }
  
  .hero-logo-container {
    width: 200px;
    height: 200px;
  }
  
  .hero-logo {
    width: 140px;
    height: 140px;
  }
  
  .hero-stats {
    bottom: 20px;
    left: 20px;
    right: 20px;
    padding: 15px;
    flex-direction: row;
    justify-content: space-around;
  }
  
  .hero-stat-number {
    font-size: 1.5rem;
    margin-bottom: 3px;
  }
  
  .hero-stat-label {
    font-size: 0.75rem;
  }
  
  .hero-decoration {
    display: none; /* 移动端隐藏装饰元素 */
  }

  /* About */
  .about-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-item {
    flex-direction: column;
    text-align: center;
  }
  
  /* About Preview - 移动端优化 */
  .about-preview {
    padding: 30px 0;
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  
  .feature-item {
    padding: 20px 15px;
  }
  
  .feature-icon {
    width: 55px;
    height: 55px;
    font-size: 1.5rem;
    margin-bottom: 15px;
  }
  
  .feature-item h3 {
    font-size: 1rem;
    margin-bottom: 8px;
  }
  
  .feature-item p {
    font-size: 0.85rem;
    line-height: 1.4;
  }
  
  .cta-section {
    margin-top: 25px;
  }
  
  .cta-content h3 {
    font-size: 1.2rem;
    margin-bottom: 12px;
  }
  
  .cta-content p {
    font-size: 0.9rem;
    margin-bottom: 15px;
  }
  
  .cta-buttons {
    flex-direction: column;
    gap: 12px;
    align-items: center;
  }
  
  .cta-buttons .btn {
    width: 100%;
    max-width: 200px;
    padding: 10px 20px;
    font-size: 0.9rem;
  }
  
  .cta-image img {
    height: 250px;
  }

  /* Services */
  .services-grid {
    grid-template-columns: 1fr;
  }

  /* Portfolio */
  .portfolio-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  /* Portfolio项目卡片移动端优化 */
  .portfolio-info {
    padding: 15px 12px;
  }

  .portfolio-info h3 {
    font-size: 1.1rem;
    margin-bottom: 6px;
    line-height: 1.2;
    white-space: normal;
    overflow: visible;
    text-overflow: unset;
  }

  .project-category {
    font-size: 0.8rem;
    margin-bottom: 10px;
  }

  .project-details {
    gap: 4px;
    font-size: 0.75rem;
  }

  .project-value,
  .project-duration,
  .project-size {
    padding: 3px 6px;
    font-size: 0.7rem;
  }

  .portfolio-image {
    height: 160px;
  }
  
  .portfolio-image img {
    height: 100%;
    object-fit: contain;
    background-color: var(--gray-100);
  }

  /* Portfolio Stats - 移动端两列优化 */
  .portfolio-stats {
    padding: 40px 0;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }

  .stat-card {
    flex-direction: column;
    text-align: center;
    padding: 20px 15px;
    gap: 10px;
  }

  .stat-icon {
    width: 45px;
    height: 45px;
    font-size: 1.2rem;
  }

  .stat-number {
    font-size: 1.4rem;
    margin-bottom: 3px;
  }

  .stat-label {
    font-size: 0.8rem;
    line-height: 1.2;
  }

  .portfolio-filter {
    flex-direction: column;
    align-items: center;
    gap: 10px;
    margin-bottom: 30px;
  }

  .filter-btn {
    padding: 8px 16px;
    font-size: 0.85rem;
    border-width: 1px;
  }

  /* Contact */
  .contact-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .contact-form-wrapper {
    padding: 30px 20px;
  }

  /* Footer - 移动端超简单设计 */
  .footer {
    padding: 20px 0 10px;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: 15px;
    text-align: center;
  }
  
  .footer-logo {
    align-items: center;
    gap: 8px;
  }
  
  .footer-logo img {
    width: 28px;
    height: 28px;
  }
  
  .footer-logo h3 {
    font-size: 0.9rem;
    margin-bottom: 4px;
  }
  
  .footer-logo p {
    display: none; /* 移动端隐藏描述 */
  }
  
  .footer-links,
  .footer-contact {
    background: none;
    padding: 8px 5px;
  }
  
  .footer-links h4,
  .footer-contact h4 {
    font-size: 0.8rem;
    margin-bottom: 6px;
    color: var(--white);
  }
  
  .footer-links ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
  }
  
  .footer-links li {
    margin-bottom: 0;
  }
  
  .footer-links a {
    font-size: 0.75rem;
    padding: 2px 4px;
    color: var(--gray-400);
    transition: var(--transition);
  }
  
  .footer-links a:hover {
    color: var(--primary-color);
  }
  
  .footer-contact ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
  }
  
  .footer-contact li {
    background: none;
    padding: 2px 4px;
    justify-content: center;
    font-size: 0.7rem;
    color: var(--gray-400);
    margin-bottom: 0;
  }
  
  .footer-contact i {
    font-size: 0.7rem;
    margin-right: 3px;
    color: var(--primary-color);
  }
  
  .footer-bottom {
    margin-top: 15px;
    padding: 12px 0;
    font-size: 0.75rem;
    line-height: 1.4;
  }

  /* Modal */
  .modal-content {
    width: 95%;
    margin: 10px;
  }

  .modal-header,
  .modal-body {
    padding: 20px;
  }

  /* 移动端弹窗优化 */
  .modal-project-info {
    grid-template-columns: 1fr;
    gap: 10px;
    margin-bottom: 20px;
  }

  .modal-info-item {
    padding: 10px 12px;
  }

  .modal-info-icon {
    width: 28px;
    height: 28px;
    font-size: 0.9rem;
  }

  .modal-info-label {
    font-size: 0.65rem;
  }

  .modal-info-value {
    font-size: 0.8rem;
  }

  .modal-media-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 15px;
  }

  .hero-title {
    font-size: 2.2rem;
  }

  .hero-subtitle {
    font-size: 1.2rem;
  }

  /* 移动端元素间距优化 */
  .section-header {
    margin-bottom: 40px;
  }
  
  .feature-item,
  .service-card,
  .value-item {
    padding: 25px 20px;
  }
  
  .about-item,
  .contact-item {
    padding: 20px;
    margin-bottom: 20px;
  }
  
  .service-card {
    padding: 25px 20px;
  }
  
  .contact-form-wrapper {
    padding: 25px 20px;
  }
  
  /* 移动端按钮优化 */
  .btn {
    padding: 12px 20px;
    font-size: 0.9rem;
    min-height: 44px; /* iOS 推荐的最小触摸目标大小 */
    min-width: 44px;
  }
  
  .feature-icon,
  .service-icon,
  .value-icon {
    width: 60px;
    height: 60px;
    font-size: 1.5rem;
  }
  
  .portfolio-image {
    height: 140px;
  }
  
  .portfolio-image img {
    height: 100%;
    object-fit: contain;
    background-color: var(--gray-100);
  }
  
  /* Portfolio信息优化 - 480px */
  .portfolio-info {
    padding: 12px 10px;
  }

  .portfolio-info h3 {
    font-size: 1rem;
    margin-bottom: 5px;
    line-height: 1.1;
  }

  .project-category {
    font-size: 0.75rem;
    margin-bottom: 8px;
  }

  .project-details {
    gap: 3px;
    font-size: 0.7rem;
  }

  .project-value,
  .project-duration,
  .project-size {
    padding: 2px 5px;
    font-size: 0.65rem;
  }
  
  /* Portfolio Stats - 480px超小屏优化 */
  .portfolio-stats {
    padding: 30px 0;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .stat-card {
    padding: 15px 10px;
    gap: 8px;
  }

  .stat-icon {
    width: 40px;
    height: 40px;
    font-size: 1.1rem;
  }

  .stat-number {
    font-size: 1.2rem;
    margin-bottom: 2px;
  }

  .stat-label {
    font-size: 0.75rem;
  }
  
  /* 移动端导航链接优化 */
  .nav-link {
    padding: 12px 20px;
    font-size: 1rem;
  }
  
  /* 移动端表单优化 */
  .form-group input,
  .form-group textarea,
  .form-group select {
    padding: 12px 15px;
    font-size: 1rem;
    min-height: 44px;
  }
  
  /* 移动端卡片间距 */
  .features-grid,
  .services-grid,
  .values-grid,
  .advantages-grid {
    gap: 20px;
  }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================ */
/*              多页面专用样式                  */
/* ============================================ */

/* Page Header */
.page-header {
  background: 
    linear-gradient(135deg, rgba(44, 90, 160, 0.95) 0%, rgba(52, 152, 219, 0.9) 50%, rgba(243, 156, 18, 0.85) 100%),
    url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="20" cy="20" r="1" fill="%23ffffff" opacity="0.1"/><circle cx="80" cy="40" r="0.8" fill="%23ffffff" opacity="0.08"/><circle cx="40" cy="80" r="1.2" fill="%23ffffff" opacity="0.06"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
  color: var(--white);
  padding: 120px 0 80px;
  text-align: center;
  margin-top: 80px;
  position: relative;
  overflow: hidden;
}

/* Portfolio页面头部背景装饰 */
.page-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 25% 25%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 75% 75%, rgba(243, 156, 18, 0.15) 0%, transparent 40%),
    conic-gradient(from 45deg at 50% 50%, 
      rgba(255, 255, 255, 0.08) 0deg,
      transparent 90deg,
      rgba(243, 156, 18, 0.06) 180deg,
      transparent 270deg
    );
  animation: headerBackgroundMove 20s ease-in-out infinite;
  z-index: 1;
}

.page-header .container {
  position: relative;
  z-index: 2;
}

.page-title {
  font-size: 3rem;
  font-family: var(--font-heading);
  margin-bottom: 1rem;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.page-subtitle {
  font-size: 1.3rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto;
}

/* About Preview Section (for Home page) */
.about-preview {
  padding: var(--section-padding);
  background: 
    linear-gradient(135deg, #f8fafc 0%, #e8f4f8 25%, #f0f8ff 50%, #ffffff 100%);
  position: relative;
  overflow: hidden;
}

/* 首页背景装饰元素 */
.about-preview::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: 
    radial-gradient(circle at 20% 80%, rgba(44, 90, 160, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(243, 156, 18, 0.06) 0%, transparent 40%),
    radial-gradient(circle at 40% 60%, rgba(52, 152, 219, 0.04) 0%, transparent 30%);
  animation: floatBackground 25s ease-in-out infinite;
  z-index: 1;
}

.about-preview::after {
  content: '';
  position: absolute;
  top: 10%;
  right: -5%;
  width: 300px;
  height: 300px;
  background: 
    conic-gradient(from 0deg, 
      rgba(44, 90, 160, 0.1) 0deg,
      transparent 60deg,
      rgba(243, 156, 18, 0.08) 120deg,
      transparent 180deg,
      rgba(52, 152, 219, 0.06) 240deg,
      transparent 300deg
    );
  border-radius: 50%;
  filter: blur(1px);
  animation: rotateFloat 20s linear infinite;
  z-index: 1;
}

.about-preview .container {
  position: relative;
  z-index: 2;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-bottom: 60px;
}

.feature-item {
  text-align: center;
  padding: 30px 20px;
  background: 
    linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.8));
  backdrop-filter: blur(15px);
  border: 1px solid rgba(44, 90, 160, 0.08);
  border-radius: var(--border-radius);
  box-shadow: 
    0 8px 32px rgba(44, 90, 160, 0.08),
    0 2px 16px rgba(0, 0, 0, 0.04),
    inset 0 1px 0 rgba(255, 255, 255, 0.3);
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.feature-item:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 
    0 20px 60px rgba(44, 90, 160, 0.12),
    0 8px 32px rgba(0, 0, 0, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.4);
  background: 
    linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.85));
  border-color: rgba(44, 90, 160, 0.1);
}

.feature-icon {
  width: 70px;
  height: 70px;
  background: var(--white);
  border: 2px solid var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  color: var(--primary-color);
  font-size: 1.8rem;
}

/* Special styling for CIDB logo */
.feature-icon .cidb-logo {
  width: 50px;
  height: auto;
  object-fit: contain;
  opacity: 1;
}

/* Specific border colors for different feature icons */
.feature-icon.cidb-icon {
  border-color: #1e40af; /* CIDB blue */
}

.feature-item:nth-child(2) .feature-icon {
  border-color: #16a34a; /* Experience green */
  color: #16a34a;
}

.feature-item:nth-child(3) .feature-icon {
  border-color: var(--secondary-color); /* Fast response orange */
  color: var(--secondary-color);
}

.feature-item:nth-child(4) .feature-icon {
  border-color: #dc2626; /* Quality assurance red */
  color: #dc2626;
}

.cta-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-top: 40px;
}

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

.cta-buttons {
  display: flex;
  gap: 20px;
  margin-top: 30px;
  flex-wrap: wrap;
}

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

/* Company Story */
.company-story {
  padding: var(--section-padding);
  background: var(--white);
}

.story-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.story-text h2 {
  color: var(--dark-color);
  margin-bottom: 30px;
  font-family: var(--font-heading);
}

.story-text p {
  margin-bottom: 20px;
  color: var(--gray-600);
  line-height: 1.8;
}

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

/* Our Values */
.our-values {
  padding: var(--section-padding);
  background: var(--gray-100);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 25px;
  max-width: 1000px;
  margin: 0 auto;
}

.value-item {
  text-align: center;
  padding: 30px 25px;
  background: var(--white);
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  transition: var(--transition);
}

.value-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.value-icon {
  width: 65px;
  height: 65px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  color: var(--white);
  font-size: 1.6rem;
}

/* Services Detail */
.services-detail {
  padding: var(--section-padding);
  background: var(--white);
}

.services-list {
  display: flex;
  flex-direction: column;
  gap: 60px;
}

.service-detail-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.service-detail-item.reverse {
  direction: rtl;
}

.service-detail-item.reverse > * {
  direction: ltr;
}

.service-image img {
  width: 100%;
  height: 350px;
  object-fit: cover;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

.service-content {
  padding: 20px;
}

.service-content ul {
  list-style: none;
  margin: 20px 0;
  padding: 0;
}

.service-content li {
  padding: 8px 0;
  padding-left: 25px;
  position: relative;
  color: var(--gray-600);
}

.service-content li:before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary-color);
  font-weight: bold;
}

/* Team Section */
.team-section {
  padding: var(--section-padding);
  background: var(--gray-100);
  color: var(--dark-color);
}

.team-section .section-title,
.team-section .section-subtitle {
  color: var(--dark-color);
}

.team-section .section-title::after {
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.team-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  text-align: center;
}

.stat-item {
  padding: 30px 20px;
}

.stat-number {
  font-size: 3rem;
  font-weight: 700;
  color: var(--secondary-color);
  margin-bottom: 10px;
  font-family: var(--font-heading);
}

.stat-label {
  font-size: 1.1rem;
  opacity: 0.9;
}

/* Why Choose Us */
.why-choose-us {
  padding: var(--section-padding);
  background: var(--gray-100);
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 40px;
}

.advantage-item {
  background: var(--white);
  padding: 40px 30px;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  transition: var(--transition);
  position: relative;
}

.advantage-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.advantage-number {
  position: absolute;
  top: -20px;
  left: 30px;
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1.2rem;
}

.advantage-item h3 {
  margin-top: 10px;
  margin-bottom: 15px;
  color: var(--dark-color);
}

.advantage-item p {
  color: var(--gray-600);
  line-height: 1.7;
}

/* Contact CTA */
.contact-cta {
  padding: var(--section-padding);
  background: linear-gradient(135deg, var(--primary-color), var(--dark-color));
  color: var(--white);
  text-align: center;
}

.contact-cta .cta-content h2 {
  color: var(--white);
  margin-bottom: 20px;
}

.contact-cta .cta-content p {
  font-size: 1.2rem;
  opacity: 0.9;
  margin-bottom: 30px;
}

/* Portfolio Stats */
.portfolio-stats {
  padding: 60px 0;
  background: var(--white);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px;
}

.stat-card {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 30px;
  background: var(--gray-100);
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.stat-card:hover {
  background: var(--white);
  box-shadow: var(--box-shadow);
  transform: translateY(-5px);
}

.stat-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.5rem;
  flex-shrink: 0;
}

.stat-info {
  flex: 1;
}

.stat-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 5px;
  font-family: var(--font-heading);
}

.stat-label {
  color: var(--gray-600);
  font-size: 0.9rem;
}

/* Portfolio Section - 美观背景设计 */
.portfolio-section {
  padding: var(--section-padding);
  background: 
    linear-gradient(135deg, #f8fafc 0%, #e8f4f8 25%, #f0f8ff 50%, #ffffff 100%);
  position: relative;
  overflow: hidden;
}

/* Portfolio页面背景装饰 */
.portfolio-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 15% 25%, rgba(44, 90, 160, 0.06) 0%, transparent 50%),
    radial-gradient(circle at 85% 75%, rgba(243, 156, 18, 0.05) 0%, transparent 40%),
    radial-gradient(circle at 50% 50%, rgba(52, 152, 219, 0.03) 0%, transparent 60%),
    linear-gradient(45deg, 
      transparent 30%, 
      rgba(44, 90, 160, 0.02) 50%, 
      transparent 70%
    );
  animation: portfolioBackgroundMove 30s ease-in-out infinite;
  z-index: 1;
}

.portfolio-section::after {
  content: '';
  position: absolute;
  bottom: 10%;
  left: 5%;
  width: 200px;
  height: 200px;
  background: 
    conic-gradient(from 45deg, 
      rgba(243, 156, 18, 0.08) 0deg,
      transparent 90deg,
      rgba(44, 90, 160, 0.06) 180deg,
      transparent 270deg
    );
  border-radius: 50%;
  filter: blur(2px);
  animation: rotateFloat 25s linear infinite reverse;
  z-index: 1;
}

.portfolio-section .container {
  position: relative;
  z-index: 2;
}

.portfolio-card-info {
  padding: 25px;
  background: var(--white);
}

.portfolio-card-info h4 {
  color: var(--dark-color);
  margin-bottom: 15px;
  font-size: 1.3rem;
}

.portfolio-card-info p {
  color: var(--gray-600);
  line-height: 1.6;
  margin-bottom: 20px;
}

.project-tags {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.tag {
  background: var(--primary-color);
  color: var(--white);
  padding: 5px 12px;
  border-radius: 15px;
  font-size: 0.8rem;
  font-weight: 500;
}

/* Process Section */
.process-section {
  padding: var(--section-padding);
  background: var(--white);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  max-width: 1000px;
  margin: 0 auto;
}

.process-step {
  text-align: center;
  padding: 30px 25px;
  background: var(--gray-100);
  border-radius: var(--border-radius);
  position: relative;
  transition: var(--transition);
}

.process-step:hover {
  background: var(--white);
  box-shadow: var(--box-shadow);
  transform: translateY(-5px);
}

.step-number {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1rem;
}

.step-icon {
  width: 60px;
  height: 60px;
  background: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 15px auto 15px;
  color: var(--primary-color);
  font-size: 1.5rem;
  box-shadow: 0 3px 15px rgba(0, 0, 0, 0.1);
}

.process-step h3 {
  margin-bottom: 12px;
  color: var(--dark-color);
  font-size: 1.2rem;
}

.process-step p {
  color: var(--gray-600);
  line-height: 1.5;
  font-size: 0.95rem;
}

/* Portfolio CTA */
.portfolio-cta {
  padding: var(--section-padding);
  background: linear-gradient(135deg, var(--dark-color), var(--primary-color));
  color: var(--white);
  text-align: center;
}

.portfolio-cta h2 {
  color: var(--white);
  margin-bottom: 20px;
}

.portfolio-cta p {
  font-size: 1.2rem;
  opacity: 0.9;
  margin-bottom: 30px;
}

/* Contact Methods */
.contact-methods {
  padding: var(--section-padding);
  background: var(--white);
}

.contact-methods-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.contact-method {
  text-align: center;
  padding: 40px 30px;
  background: var(--gray-100);
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.contact-method:hover {
  background: var(--white);
  box-shadow: var(--box-shadow);
  transform: translateY(-5px);
}

.method-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  color: var(--white);
  font-size: 2rem;
}

.contact-method h3 {
  margin-bottom: 10px;
  color: var(--dark-color);
}

.contact-method p {
  color: var(--gray-600);
  margin-bottom: 20px;
}

.method-info {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 15px;
}

.contact-link {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: var(--transition);
}

.contact-link:hover {
  color: var(--secondary-color);
}

.method-note {
  font-size: 0.9rem;
  color: var(--gray-500);
  font-style: italic;
}

/* Contact Form Section */
.contact-form-section {
  padding: var(--section-padding);
  background: var(--gray-100);
}

.contact-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 60px;
}

.contact-form-wrapper {
  background: var(--white);
  padding: 40px;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

.form-header {
  margin-bottom: 30px;
  text-align: center;
}

.form-header h2 {
  color: var(--dark-color);
  margin-bottom: 10px;
}

.form-header p {
  color: var(--gray-600);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--dark-color);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 15px;
  border: 2px solid var(--gray-300);
  border-radius: var(--border-radius);
  font-size: 1rem;
  font-family: var(--font-primary);
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(44, 90, 160, 0.1);
}

.form-checkbox {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}

.form-checkbox input[type="checkbox"] {
  width: auto;
}

.form-note {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--gray-600);
  margin-top: 20px;
  text-align: center;
  justify-content: center;
}

/* Contact Sidebar */
.contact-sidebar {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.contact-card {
  background: var(--white);
  padding: 30px;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

.contact-card h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--dark-color);
  margin-bottom: 20px;
  font-size: 1.2rem;
}

.contact-card ul {
  list-style: none;
}

.contact-card li {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--gray-200);
}

.contact-card li:last-child {
  border-bottom: none;
}

.offer-item {
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--gray-200);
}

.offer-item:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.offer-item h4 {
  color: var(--primary-color);
  margin-bottom: 8px;
}

.offer-item p {
  color: var(--gray-600);
  font-size: 0.9rem;
}

.promise-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.promise-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  border: none;
  padding: 5px 0;
}

.promise-list i {
  color: var(--primary-color);
  font-size: 0.9rem;
}

.testimonial-card {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--white);
}

.testimonial-card h3 {
  color: var(--white);
}

.testimonial p {
  font-style: italic;
  line-height: 1.6;
  margin-bottom: 20px;
}

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

.testimonial-author strong {
  display: block;
  margin-bottom: 5px;
}

.testimonial-author span {
  font-size: 0.9rem;
  opacity: 0.8;
}

/* Business Info Section */
.business-info {
  padding: var(--section-padding);
  background: var(--gray-100);
}

.business-info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
  margin-top: 60px;
  padding: 20px 0;
}

.pagination-btn {
  width: 45px;
  height: 45px;
  border: 2px solid var(--primary-color);
  background: transparent;
  color: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  font-size: 1rem;
}

.pagination-btn:hover {
  background: var(--primary-color);
  color: var(--white);
  transform: scale(1.1);
}

.pagination-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.pagination-btn:disabled:hover {
  background: transparent;
  color: var(--primary-color);
}

.pagination-numbers {
  display: flex;
  gap: 10px;
  align-items: center;
}

.page-number {
  width: 40px;
  height: 40px;
  border: 2px solid var(--gray-300);
  background: var(--white);
  color: var(--gray-700);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  font-weight: 500;
}

.page-number:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
  transform: translateY(-2px);
}

.page-number.active {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--white);
  border-color: var(--primary-color);
  box-shadow: 0 4px 15px rgba(44, 90, 160, 0.3);
  transform: translateY(-2px);
}

.page-ellipsis {
  color: var(--gray-500);
  font-weight: bold;
  padding: 0 5px;
}

/* FAQ Section */
.faq-section {
  padding: var(--section-padding);
  background: var(--white);
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 20px;
}

.faq-item {
  background: var(--gray-100);
  border-radius: var(--border-radius);
  overflow: hidden;
  transition: var(--transition);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 25px;
  cursor: pointer;
  transition: var(--transition);
}

.faq-question:hover {
  background: var(--white);
}

.faq-question h3 {
  color: var(--dark-color);
  font-size: 1.1rem;
  margin: 0;
}

.faq-question i {
  color: var(--primary-color);
  transition: var(--transition);
}

.faq-item.active .faq-question i {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-answer p {
  padding: 0 25px 25px;
  color: var(--gray-600);
  line-height: 1.6;
}

/* Organization Structure Styles */
.organization-structure {
  padding: var(--section-padding);
  background: linear-gradient(135deg, #f0f8ff 0%, #e6f3ff 25%, #fff5e6 75%, #f8f9fa 100%);
  position: relative;
  overflow: hidden;
}

.organization-structure::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 15% 25%, rgba(44, 90, 160, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 85% 75%, rgba(243, 156, 18, 0.08) 0%, transparent 35%),
    radial-gradient(circle at 50% 15%, rgba(52, 152, 219, 0.06) 0%, transparent 30%),
    radial-gradient(circle at 25% 85%, rgba(231, 76, 60, 0.05) 0%, transparent 25%),
    linear-gradient(45deg, transparent 30%, rgba(44, 90, 160, 0.03) 35%, rgba(243, 156, 18, 0.02) 65%, transparent 70%);
  animation: backgroundShift 25s ease-in-out infinite;
  z-index: 1;
}

.organization-structure::after {
  content: '';
  position: absolute;
  top: 60%;
  left: 40%;
  transform: translate(-50%, -50%);
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(44, 90, 160, 0.04) 0%, rgba(243, 156, 18, 0.02) 50%, transparent 80%);
  border-radius: 50%;
  animation: pulse 12s ease-in-out infinite;
  z-index: 1;
}

@keyframes backgroundShift {
  0%, 100% { opacity: 0.8; transform: translateX(0) translateY(0) rotate(0deg); }
  25% { opacity: 0.6; transform: translateX(30px) translateY(-20px) rotate(90deg); }
  50% { opacity: 0.9; transform: translateX(-20px) translateY(25px) rotate(180deg); }
  75% { opacity: 0.4; transform: translateX(25px) translateY(-15px) rotate(270deg); }
}

@keyframes pulse {
  0%, 100% { transform: translate(-50%, -50%) scale(1) rotate(0deg); opacity: 0.4; }
  33% { transform: translate(-50%, -50%) scale(1.2) rotate(120deg); opacity: 0.2; }
  66% { transform: translate(-50%, -50%) scale(0.8) rotate(240deg); opacity: 0.3; }
}

.org-chart {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin: 0 auto;
}

.org-level {
  margin-bottom: 35px;
  position: relative;
}

/* Management Level */
.management-level {
  display: flex;
  justify-content: center;
  margin-bottom: 40px;
}

.org-member {
  background: var(--white);
  border-radius: 12px;
  padding: 20px 16px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  text-align: center;
  min-width: 180px;
  max-width: 200px;
  margin: 0 15px;
}

.org-member::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.org-member:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.12);
}

.org-member.ceo::before {
  background: linear-gradient(90deg, #ff6b6b, #ffd700);
}

.org-member.manager::before {
  background: linear-gradient(90deg, var(--primary-color), #3498db);
}

.org-member.supervisor::before {
  background: linear-gradient(90deg, var(--secondary-color), #e67e22);
}

.member-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 15px;
  overflow: hidden;
  position: relative;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
  border: 3px solid var(--white);
}

.member-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

.member-avatar .fallback-icon {
  font-size: 1.5rem;
  color: var(--gray-500);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--white);
}

.org-member.ceo .member-avatar .fallback-icon {
  background: linear-gradient(135deg, #ff6b6b, #ffd700);
}

.org-member.supervisor .member-avatar .fallback-icon {
  background: linear-gradient(135deg, var(--secondary-color), #e67e22);
}

.org-member.ceo .member-avatar {
  box-shadow: 0 8px 20px rgba(255, 107, 107, 0.3);
  border-color: rgba(255, 107, 107, 0.3);
}

.org-member.manager .member-avatar {
  box-shadow: 0 5px 15px rgba(44, 90, 160, 0.3);
  border-color: rgba(44, 90, 160, 0.3);
}

.org-member.supervisor .member-avatar {
  box-shadow: 0 8px 20px rgba(243, 156, 18, 0.3);
  border-color: rgba(243, 156, 18, 0.3);
}

.member-info h3 {
  color: var(--dark-color);
  margin-bottom: 4px;
  font-size: 1rem;
}

.member-info p {
  color: var(--primary-color);
  font-weight: 600;
  margin-bottom: 6px;
  font-size: 0.85rem;
}

.member-info span {
  color: var(--gray-600);
  font-size: 0.75rem;
  line-height: 1.3;
}

/* Department Level */
.department-level {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}

/* Connection Lines */
.org-connection {
  display: flex;
  justify-content: center;
  margin: 20px 0;
  position: relative;
  z-index: 2;
}

.connection-line {
  width: 2px;
  height: 40px;
  background: linear-gradient(180deg, var(--primary-color), transparent);
  position: relative;
}

.connection-line::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  transform: translateX(-50%);
  width: 8px;
  height: 8px;
  background: var(--primary-color);
  border-radius: 50%;
}

.connection-line-multi {
  position: relative;
  width: 300px;
  height: 40px;
}

.line-horizontal {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--primary-color);
  transform: translateY(-50%);
}

.line-branch {
  position: absolute;
  width: 2px;
  height: 20px;
  background: var(--primary-color);
  top: 50%;
}

.line-branch.left {
  left: 25%;
  transform: translateY(-50%);
}

.line-branch.right {
  right: 25%;
  transform: translateY(-50%);
}

.line-branch::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  transform: translateX(-50%);
  width: 8px;
  height: 8px;
  background: var(--primary-color);
  border-radius: 50%;
}

/* Team Level */
.team-level {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  justify-items: center;
}

.org-team {
  background: var(--white);
  border-radius: 12px;
  padding: 15px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.06);
  transition: var(--transition);
  width: 100%;
  max-width: 220px;
  position: relative;
  overflow: hidden;
}

.org-team::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--secondary-color), #e67e22);
}

/* 技术团队样式 */
.org-team.team-technical::before {
  background: linear-gradient(90deg, var(--primary-color), #3498db);
}

.org-team.team-technical .team-icon {
  background: linear-gradient(135deg, var(--primary-color), #3498db);
  box-shadow: 0 5px 15px rgba(44, 90, 160, 0.3);
}

/* 支持团队样式 */
.org-team.team-support::before {
  background: linear-gradient(90deg, var(--secondary-color), #e67e22);
}

.org-team.team-support .team-icon {
  background: linear-gradient(135deg, var(--secondary-color), #e67e22);
  box-shadow: 0 5px 15px rgba(243, 156, 18, 0.3);
}

.org-team:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.team-header {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 15px;
  padding-bottom: 15px;
  border-bottom: 1px solid var(--gray-200);
}

.team-icon {
  width: 50px;
  height: 50px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--secondary-color), #e67e22);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--white);
  box-shadow: 0 5px 15px rgba(243, 156, 18, 0.3);
}

.team-header h3 {
  color: var(--dark-color);
  margin: 0;
  font-size: 1.1rem;
  flex: 1;
}

.team-members {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.team-member {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  font-size: 0.9rem;
  color: var(--gray-700);
}

.team-member i {
  color: var(--primary-color);
  width: 16px;
  text-align: center;
}

/* Organization Stats */
.org-stats {
  margin-top: 60px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px;
  position: relative;
  z-index: 2;
}

.stat-item {
  text-align: center;
  padding: 30px 20px;
  background: var(--white);
  border-radius: 15px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.06);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.stat-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.stat-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-color);
  font-family: var(--font-heading);
  margin-bottom: 10px;
  text-shadow: 0 2px 4px rgba(44, 90, 160, 0.1);
}

.stat-label {
  color: var(--gray-700);
  font-weight: 500;
  font-size: 0.95rem;
}

/* 移动端响应式设计的额外样式 */
@media (max-width: 768px) {
  /* 多页面布局响应式调整 */
  .page-header {
    padding: 80px 0 40px;
  }
  
  .page-title {
    font-size: 2rem;
    margin-bottom: 0.5rem;
  }
  
  .page-subtitle {
    font-size: 1rem;
  }
  
  /* Story content - 移动端简化 */
  .company-story {
    padding: 30px 0;
  }
  
  .story-content,
  .cta-section {
    grid-template-columns: 1fr;
    gap: 25px;
  }
  
  .story-text h2 {
    font-size: 1.4rem;
    margin-bottom: 15px;
  }
  
  .story-text p {
    font-size: 0.9rem;
    margin-bottom: 12px;
    line-height: 1.5;
  }
  
  .story-image img {
    height: 250px;
  }
  
  /* Services detail - 移动端简化 */
  .services-detail {
    padding: 30px 0;
  }
  
  .service-detail-item {
    grid-template-columns: 1fr;
    gap: 20px;
    margin-bottom: 30px;
  }
  
  .service-detail-item.reverse {
    direction: ltr;
  }
  
  .service-image img {
    height: 200px;
  }
  
  .service-content {
    padding: 15px;
  }
  
  .service-content h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
  }
  
  .service-content p {
    font-size: 0.85rem;
    line-height: 1.4;
  }
  
  .service-content ul {
    margin: 15px 0;
  }
  
  .service-content li {
    font-size: 0.8rem;
    padding: 4px 0;
    padding-left: 20px;
  }
  
  /* Contact content */
  .contact-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  /* Values section - 移动端简化 */
  .our-values {
    padding: 30px 0;
  }
  
  .values-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  
  .value-item {
    padding: 20px 15px;
    text-align: center;
  }
  
  .value-icon {
    width: 50px;
    height: 50px;
    font-size: 1.3rem;
    margin: 0 auto 12px;
  }
  
  .value-item h3 {
    font-size: 1rem;
    margin-bottom: 8px;
  }
  
  .value-item p {
    font-size: 0.8rem;
    line-height: 1.3;
  }
  
  /* Why Choose Us - 移动端简化 */
  .why-choose-us {
    padding: 30px 0;
  }
  
  .advantages-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .advantage-item {
    padding: 20px 15px;
  }
  
  .advantage-number {
    width: 35px;
    height: 35px;
    top: -17px;
    left: 20px;
    font-size: 1rem;
  }
  
  .advantage-item h3 {
    font-size: 1rem;
    margin-top: 8px;
    margin-bottom: 8px;
  }
  
  .advantage-item p {
    font-size: 0.85rem;
    line-height: 1.4;
  }
  
  /* Contact CTA - 移动端简化 */
  .contact-cta {
    padding: 40px 0;
  }
  
  .contact-cta h2 {
    font-size: 1.4rem;
    margin-bottom: 15px;
  }
  
  .contact-cta p {
    font-size: 1rem;
    margin-bottom: 20px;
  }
  
  .cta-buttons {
    flex-direction: column;
    gap: 12px;
    align-items: center;
  }
  
  .cta-buttons .btn {
    width: 100%;
    max-width: 250px;
    padding: 12px 20px;
    font-size: 0.9rem;
  }
  
  /* FAQ */
  .faq-grid {
    grid-template-columns: 1fr;
  }
  
  /* Stats grid */
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  /* 全局移动端元素压缩 */
  :root {
    --section-padding: 25px 0;
    --container-padding: 0 10px;
  }
  
  /* 整体间距压缩 */
  .section-header {
    margin-bottom: 20px;
  }
  
  section {
    padding: 25px 0;
  }
  
  /* 移动端字体整体缩小 */
  h1 { font-size: 1.8rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.2rem; }
  h4 { font-size: 0.95rem; }
  
  p {
    font-size: 0.9rem;
    line-height: 1.4;
    margin-bottom: 0.5rem;
  }
  
  .section-subtitle {
    font-size: 0.85rem;
  }
  
  /* 页面头部压缩 */
  .page-header {
    padding: 70px 0 35px;
    margin-top: 60px;
  }
  
  .page-title {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
  }
  
  .page-subtitle {
    font-size: 0.9rem;
  }
  
  /* Portfolio Stats - 进一步压缩但保持2列 */
  .portfolio-stats {
    padding: 25px 0;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 15px;
  }
  
  .stat-card {
    padding: 15px;
    flex-direction: column;
    text-align: center;
    gap: 8px;
  }
  
  .stat-icon {
    width: 40px;
    height: 40px;
    font-size: 1.1rem;
  }
  
  .stat-number {
    font-size: 1.3rem;
    margin-bottom: 2px;
  }
  
  .stat-label {
    font-size: 0.7rem;
  }
  
  /* Portfolio Section - 进一步压缩 */
  .portfolio-section {
    padding: 25px 0;
  }
  
  .portfolio-filter {
    margin-bottom: 20px;
  }
  
  .filter-btn {
    padding: 6px 12px;
    font-size: 0.75rem;
  }
  
  .portfolio-item {
    margin-bottom: 15px;
  }
  
  .portfolio-image img {
    height: 160px;
  }
  
  .portfolio-card-info {
    padding: 12px 15px;
  }
  
  .portfolio-card-info h4 {
    font-size: 0.95rem;
    margin-bottom: 6px;
  }
  
  .portfolio-card-info p {
    font-size: 0.75rem;
    line-height: 1.3;
    margin-bottom: 8px;
  }
  
  .project-tags {
    gap: 5px;
  }
  
  .tag {
    font-size: 0.65rem;
    padding: 3px 6px;
  }
  
  /* Process steps - 移动端网格布局 */
  .process-section {
    padding: 25px 0;
  }
  
  .process-steps {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    max-width: 100%;
    margin: 0 auto;
  }
  
  .process-step {
    padding: 15px 12px;
    position: relative;
    background: var(--gray-100);
    border-radius: var(--border-radius);
    transition: var(--transition);
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 120px;
  }
  
  .step-number {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 26px;
    height: 26px;
    font-size: 0.75rem;
    font-weight: bold;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(44, 90, 160, 0.3);
  }
  
  .step-icon {
    width: 36px;
    height: 36px;
    font-size: 1rem;
    margin: 0 auto 8px;
    background: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  }
  
  .process-step h3 {
    font-size: 0.8rem;
    margin-bottom: 6px;
    line-height: 1.2;
    color: var(--dark-color);
  }
  
  .process-step p {
    font-size: 0.7rem;
    line-height: 1.3;
    color: var(--gray-600);
    margin: 0;
  }
  
  /* Portfolio CTA - 进一步压缩 */
  .portfolio-cta {
    padding: 25px 0;
  }
  
  .portfolio-cta h2 {
    font-size: 1.2rem;
    margin-bottom: 10px;
  }
  
  .portfolio-cta p {
    font-size: 0.85rem;
    margin-bottom: 15px;
  }
  
  .portfolio-cta .cta-buttons {
    flex-direction: column;
    gap: 8px;
    align-items: center;
  }
  
  .portfolio-cta .cta-buttons .btn {
    width: 100%;
    max-width: 220px;
    padding: 8px 15px;
    font-size: 0.8rem;
  }
  
  /* 新服务部分移动端优化 */
  .services-detail-new {
    padding: 40px 0;
  }
  
  .services-grid-new {
    grid-template-columns: 1fr;
    gap: 25px;
    margin-bottom: 40px;
  }
  
  .service-card-new {
    border-radius: 15px;
    margin: 0;
  }
  
  .service-card-header {
    padding: 20px 20px 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 15px;
  }
  
  .service-icon-new {
    width: 55px;
    height: 55px;
    font-size: 1.5rem;
    border-radius: 12px;
  }
  
  .service-badge {
    align-self: flex-end;
    padding: 4px 10px;
    font-size: 0.7rem;
  }
  
  .service-card-content {
    padding: 20px;
  }
  
  .service-card-content h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
  }
  
  .service-card-content > p {
    font-size: 0.9rem;
    margin-bottom: 20px;
  }
  
  .feature-group h4 {
    font-size: 0.9rem;
    margin-bottom: 10px;
  }
  
  .feature-group li {
    font-size: 0.8rem;
    padding: 4px 0;
  }
  
  .feature-group li i {
    font-size: 0.7rem;
    width: 14px;
  }
  
  .process-step {
    padding: 10px;
    margin-bottom: 12px;
  }
  
  .step-number {
    width: 30px;
    height: 30px;
    font-size: 0.8rem;
  }
  
  .step-content h5 {
    font-size: 0.85rem;
  }
  
  .step-content p {
    font-size: 0.75rem;
  }
  
  .brand-list {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  
  .brand-item {
    padding: 6px 10px;
    font-size: 0.8rem;
  }
  
  .feature-tag {
    padding: 4px 8px;
    font-size: 0.7rem;
  }
  
  .consultation-item {
    padding: 10px;
    margin-bottom: 12px;
  }
  
  .consultation-item i {
    font-size: 1rem;
  }
  
  .consultation-item h5 {
    font-size: 0.85rem;
  }
  
  .consultation-item p {
    font-size: 0.75rem;
  }
  
  .service-highlight {
    padding: 12px 15px;
    margin-top: 20px;
  }
  
  .service-highlight span {
    font-size: 0.8rem;
  }
  
  .services-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin-top: 30px;
    padding: 30px 0;
  }
  
  .stat-item-new {
    padding: 15px;
    flex-direction: column;
    text-align: center;
    gap: 12px;
  }
  
  .stat-icon {
    width: 40px;
    height: 40px;
    font-size: 1.1rem;
  }
  
  .stat-content .stat-number {
    font-size: 1.5rem;
    margin-bottom: 2px;
  }
  
  .stat-content .stat-label {
    font-size: 0.8rem;
  }

  /* Organization Structure - 移动端完整优化 */
  .organization-structure {
    padding: 40px 0;
  }
  
  .org-chart {
    max-width: 100%;
    padding: 0 15px;
  }
  
  /* Management Level 移动端 */
  .management-level {
    margin-bottom: 25px;
    position: relative;
  }
  
  .org-member {
    min-width: 180px;
    max-width: 220px;
    margin: 0 auto;
    padding: 12px;
    box-shadow: 0 8px 18px rgba(0, 0, 0, 0.1);
    border-left: 3px solid var(--primary-color);
  }
  
  .org-member.ceo {
    border-left-color: #ff6b6b;
    background: linear-gradient(to right, rgba(255, 107, 107, 0.04), transparent);
  }
  
  .org-member.manager {
    border-left-color: var(--primary-color);
    background: linear-gradient(to right, rgba(44, 90, 160, 0.04), transparent);
  }
  
  .org-member.supervisor {
    border-left-color: var(--secondary-color);
    background: linear-gradient(to right, rgba(243, 156, 18, 0.04), transparent);
  }
  
  .member-avatar {
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
    margin-bottom: 10px;
  }
  
  .member-info h3 {
    font-size: 0.95rem;
    margin-bottom: 3px;
  }
  
  .member-info p {
    font-size: 0.8rem;
    margin-bottom: 4px;
  }
  
  .member-info span {
    font-size: 0.7rem;
    line-height: 1.2;
  }
  
  /* Department Level 移动端 */
  .department-level {
    flex-direction: column;
    gap: 20px;
    align-items: center;
    position: relative;
  }
  
  /* Connection Lines 移动端增强 */
  .connection-line-multi {
    width: 2px;
    height: 25px;
    background: var(--primary-color);
    margin: 0 auto;
    position: relative;
    display: block;
  }
  
  .connection-line-multi::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    background: var(--primary-color);
    border-radius: 50%;
  }
  
  .org-connection {
    margin: 15px 0;
    position: relative;
  }
  
  .connection-line {
    height: 25px;
    width: 2px;
    background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
    margin: 0 auto;
  }
  
  /* Team Level 移动端 */
  .team-level {
    grid-template-columns: 1fr;
    gap: 20px;
    margin-top: 15px;
    position: relative;
  }
  
  .org-team {
    max-width: 220px;
    margin: 0 auto;
    padding: 12px;
    box-shadow: 0 8px 18px rgba(0, 0, 0, 0.08);
    border-left: 3px solid var(--secondary-color);
    background: linear-gradient(to right, rgba(243, 156, 18, 0.03), transparent);
  }
  
  .team-header {
    gap: 8px;
    margin-bottom: 10px;
    padding-bottom: 8px;
  }
  
  .team-icon {
    width: 35px;
    height: 35px;
    font-size: 1.1rem;
  }
  
  .team-header h3 {
    font-size: 0.9rem;
  }
  
  .team-members {
    gap: 6px;
  }
  
  .team-member {
    font-size: 0.75rem;
    padding: 4px 0;
    border-bottom: 1px dotted rgba(0, 0, 0, 0.06);
  }
  
  .team-member:last-child {
    border-bottom: none;
  }
  
  /* 添加虚线连接器来增强层次感 */
  .team-level::before {
    content: '';
    position: absolute;
    top: -25px;
    left: 50%;
    height: 25px;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary-color), var(--secondary-color));
    transform: translateX(-50%);
  }
  
  .team-level .org-team:not(:first-child)::before {
    content: '';
    position: absolute;
    top: -25px;
    left: 50%;
    height: 25px;
    width: 2px;
    background: linear-gradient(to bottom, transparent, rgba(243, 156, 18, 0.5));
    transform: translateX(-50%);
  }
  
  /* Organization Stats 移动端 */
  .org-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-top: 35px;
  }
  
  .stat-item {
    padding: 15px 12px;
  }
  
  .stat-number {
    font-size: 1.6rem;
    margin-bottom: 6px;
  }
  
  .stat-label {
    font-size: 0.75rem;
  }
}

@media (max-width: 480px) {
  :root {
    --section-padding: 40px 0;
    --container-padding: 0 12px;
  }
  
  /* 超小屏幕字体调整 */
  h1 { font-size: 1.9rem; }
  h2 { font-size: 1.6rem; }
  h3 { font-size: 1.2rem; }
  h4 { font-size: 1rem; }
  
  p {
    font-size: 0.95rem;
    line-height: 1.5;
  }
  
  .hero-title {
    font-size: 1.9rem;
    line-height: 1.2;
  }
  
  .hero-subtitle {
    font-size: 1.1rem;
  }
  
  .hero-description {
    font-size: 0.9rem;
  }
  
  .page-title {
    font-size: 1.8rem;
  }
  
  .page-subtitle {
    font-size: 0.95rem;
  }
  
  /* 超小屏幕网格优化 - 保持2列 */
  .stats-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 15px;
  }
  
  .contact-methods-grid,
  .features-grid,
  .advantages-grid {
    grid-template-columns: 1fr;
    gap: 15px;
  }
  
  /* 超小屏幕元素间距 */
  .section-header {
    margin-bottom: 25px;
  }
  
  .section-title {
    font-size: 1.3rem;
  }
  
  .section-subtitle {
    font-size: 0.85rem;
  }
  
  .feature-item,
  .service-card,
  .value-item,
  .advantage-item {
    padding: 20px 15px;
  }
  
  .about-item,
  .contact-item {
    padding: 15px;
    margin-bottom: 15px;
  }
  
  .contact-form-wrapper {
    padding: 20px 15px;
  }
  
  /* 超小屏幕图标优化 */
  .feature-icon,
  .service-icon,
  .value-icon,
  .method-icon {
    width: 50px;
    height: 50px;
    font-size: 1.3rem;
  }
  
  .contact-icon {
    width: 50px;
    height: 50px;
    font-size: 1.2rem;
  }
  
  /* 超小屏幕导航优化 */
  .nav-logo img {
    width: 30px;
    height: 30px;
  }
  
  .nav-brand {
    font-size: 1.1rem;
  }
  
  /* 超小屏幕按钮优化 */
  .btn {
    padding: 10px 18px;
    font-size: 0.85rem;
  }
  
  .hero-buttons .btn {
    padding: 10px 20px;
    font-size: 0.9rem;
    width: 100%;
    max-width: 250px;
  }
  
  /* 超小屏幕表单优化 */
  .form-group input,
  .form-group textarea,
  .form-group select {
    padding: 10px 12px;
    font-size: 0.95rem;
  }
  
  /* 超小屏幕模态优化 */
  .modal-content {
    width: 98%;
    margin: 5px;
  }
  
  .modal-header,
  .modal-body {
    padding: 15px;
  }
  
  .modal-header h3 {
    font-size: 1.1rem;
  }
  
  /* 超小屏幕工作流程优化 */
  .process-steps {
    gap: 20px;
  }
  
  .process-step {
    padding: 20px 15px;
  }
  
  .step-number {
    width: 30px;
    height: 30px;
    font-size: 0.9rem;
    top: -15px;
  }
  
  .step-icon {
    width: 50px;
    height: 50px;
    font-size: 1.3rem;
    margin: 12px auto 12px;
  }
  
  .process-step h3 {
    font-size: 1rem;
    margin-bottom: 8px;
  }
  
  .process-step p {
    font-size: 0.85rem;
    line-height: 1.4;
  }
  
  /* 超小屏幕页脚优化 - 更小更精简 */
  .footer {
    padding: 25px 0 12px;
  }
  
  .footer-content {
    gap: 20px;
  }
  
  .footer-logo {
    gap: 10px;
  }
  
  .footer-logo img {
    width: 35px;
    height: 35px;
  }
  
  .footer-logo h3 {
    font-size: 1rem;
    margin-bottom: 6px;
  }
  
  .footer-logo p {
    font-size: 0.8rem;
    max-width: 250px;
    line-height: 1.3;
  }
  
  .footer-links,
  .footer-contact {
    padding: 12px 8px;
  }
  
  .footer-links h4,
  .footer-contact h4 {
    font-size: 0.95rem;
    margin-bottom: 10px;
  }
  
  .footer-links ul {
    gap: 6px;
  }
  
  .footer-links a {
    font-size: 0.8rem;
    padding: 3px 6px;
  }
  
  .footer-contact ul {
    gap: 6px;
  }
  
  .footer-contact li {
    padding: 3px 6px;
    font-size: 0.8rem;
  }
  
  .footer-contact i {
    font-size: 0.8rem;
    margin-right: 4px;
  }
  
  .footer-bottom {
    margin-top: 20px;
    padding-top: 15px;
    font-size: 0.7rem;
  }
  
  /* 新服务部分超小屏幕优化 */
  .services-detail-new {
    padding: 30px 0;
  }
  
  .services-grid-new {
    gap: 20px;
    margin-bottom: 30px;
  }
  
  .service-card-header {
    padding: 15px 15px 0;
    gap: 10px;
  }
  
  .service-icon-new {
    width: 50px;
    height: 50px;
    font-size: 1.3rem;
  }
  
  .service-badge {
    padding: 3px 8px;
    font-size: 0.65rem;
  }
  
  .service-card-content {
    padding: 15px;
  }
  
  .service-card-content h3 {
    font-size: 1.1rem;
  }
  
  .service-card-content > p {
    font-size: 0.85rem;
    margin-bottom: 15px;
  }
  
  .feature-group h4 {
    font-size: 0.85rem;
    margin-bottom: 8px;
  }
  
  .feature-group li {
    font-size: 0.75rem;
    padding: 3px 0;
  }
  
  .step-number {
    width: 25px;
    height: 25px;
    font-size: 0.7rem;
  }
  
  .step-content h5 {
    font-size: 0.8rem;
  }
  
  .step-content p {
    font-size: 0.7rem;
  }
  
  .brand-item {
    padding: 5px 8px;
    font-size: 0.75rem;
  }
  
  .feature-tag {
    padding: 3px 6px;
    font-size: 0.65rem;
  }
  
  .consultation-item {
    padding: 8px;
    margin-bottom: 10px;
  }
  
  .consultation-item i {
    font-size: 0.9rem;
  }
  
  .consultation-item h5 {
    font-size: 0.8rem;
  }
  
  .consultation-item p {
    font-size: 0.7rem;
  }
  
  .service-highlight {
    padding: 10px 12px;
  }
  
  .service-highlight span {
    font-size: 0.75rem;
  }
  
  .services-stats {
    grid-template-columns: 1fr;
    gap: 12px;
    margin-top: 25px;
    padding: 20px 0;
  }
  
  .stat-item-new {
    padding: 12px;
    gap: 10px;
  }
  
  .stat-icon {
    width: 35px;
    height: 35px;
    font-size: 1rem;
  }
  
  .stat-content .stat-number {
    font-size: 1.3rem;
  }
  
  .stat-content .stat-label {
    font-size: 0.75rem;
  }

  /* Organization Structure - 超小屏幕优化 */
  .org-member {
    min-width: 200px;
    padding: 20px 15px;
    margin: 0;
  }
  
  .member-avatar {
    width: 60px;
    height: 60px;
    font-size: 1.8rem;
    margin-bottom: 15px;
  }
  
  .member-info h3 {
    font-size: 1.1rem;
    margin-bottom: 5px;
  }
  
  .member-info p {
    font-size: 0.9rem;
    margin-bottom: 6px;
  }
  
  .member-info span {
    font-size: 0.8rem;
  }
  
  .org-team {
    max-width: 250px;
    padding: 15px;
  }
  
  .team-header {
    gap: 10px;
    margin-bottom: 12px;
    padding-bottom: 12px;
  }
  
  .team-icon {
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
  }
  
  .team-header h3 {
    font-size: 1rem;
  }
  
  .team-member {
    font-size: 0.8rem;
    padding: 6px 0;
  }
  
  .org-stats {
    grid-template-columns: 1fr;
    gap: 15px;
  }
  
  .stat-item {
    padding: 20px 15px;
  }
  
  .stat-number {
    font-size: 2rem;
    margin-bottom: 8px;
  }
  
  .stat-label {
    font-size: 0.85rem;
  }
}

/* 横屏优化 */
@media (max-height: 500px) and (orientation: landscape) {
  .hero {
    height: 100vh;
    min-height: 500px;
  }
  
  .hero-title {
    font-size: 2rem;
    margin-bottom: 0.5rem;
  }
  
  .hero-subtitle {
    font-size: 1.1rem;
    margin-bottom: 1rem;
  }
  
  .hero-description {
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
  }
  
  .hero-buttons {
    flex-direction: row;
    gap: 15px;
  }
  
  .hero-buttons .btn {
    padding: 8px 20px;
    font-size: 0.9rem;
  }
  
  .scroll-indicator {
    bottom: 15px;
  }
}

/* Services Detail - 简洁介绍风格 */
.services-detail {
  padding: var(--section-padding);
  background: linear-gradient(135deg, #fafbff 0%, #f0f4f8 25%, #e8f4f8 75%, #f8fffe 100%);
  position: relative;
  overflow: hidden;
}

.services-detail::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 10% 30%, rgba(44, 90, 160, 0.04) 0%, transparent 60%),
    radial-gradient(circle at 90% 70%, rgba(52, 152, 219, 0.03) 0%, transparent 50%),
    linear-gradient(45deg, transparent 40%, rgba(44, 90, 160, 0.02) 45%, rgba(52, 152, 219, 0.015) 55%, transparent 60%);
  z-index: 1;
}

.services-detail .container {
  position: relative;
  z-index: 2;
}

/* 高分辨率屏幕优化 */
@media (min-width: 769px) and (-webkit-min-device-pixel-ratio: 2) {
  .hero {
    background-image: linear-gradient(135deg, rgba(44, 90, 160, 0.9), rgba(52, 152, 219, 0.8)), url('assets/front_20.jpg');
    background-size: cover;
  }
}
@media (min-width: 769px) and (min-resolution: 192dpi) {
  .hero {
    background-image: linear-gradient(135deg, rgba(44, 90, 160, 0.9), rgba(52, 152, 219, 0.8)), url('assets/front_20.jpg');
    background-size: cover;
  }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
  .btn:hover {
    transform: none;
  }
  
  .portfolio-item:hover {
    transform: none;
  }
  
  .service-card:hover,
  .feature-item:hover,
  .value-item:hover {
    transform: none;
  }
  
  .portfolio-overlay {
    opacity: 1;
  }
  
  .nav-link:hover,
  .nav-link.active {
    background: rgba(44, 90, 160, 0.15);
  }
}

/* 可访问性优化 */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .hero-title,
  .hero-subtitle,
  .hero-description,
  .hero-buttons {
    animation: none;
  }
  
  .scroll-indicator {
    animation: none;
  }
}