/* 基础样式重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-color: #ff6b35;
  --secondary-color: #ffc107;
  --accent-color: #dc3545;
  --text-primary: #f0f0f0;
  --text-secondary: #b0b0b0;
  --bg-primary: #2a2a2a;
  --bg-secondary: #3a3a3a;
  --border-color: rgba(255, 107, 53, 0.1);
  --shadow-light: 0 4px 15px rgba(0, 0, 0, 0.1);
  --shadow-medium: 0 8px 25px rgba(0, 0, 0, 0.15);
  --shadow-heavy: 0 12px 35px rgba(0, 0, 0, 0.2);
  --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
  font-family: "Inter", "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.7;
  color: #666666;
  background-color: #2a2a2a;
  font-size: 16px;
  font-weight: 400;
  letter-spacing: 0.01em;
}

/* 容器 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

@media (max-width: 768px) {
  .container {
    padding: 0 20px;
  }
}

/* 导航栏 */
.navbar {
  background: linear-gradient(
    135deg,
    rgba(26, 26, 26, 0.98) 0%,
    rgba(42, 42, 42, 0.95) 100%
  );
  backdrop-filter: blur(20px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2), 0 2px 8px rgba(255, 107, 53, 0.1);
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border-bottom: 1px solid rgba(255, 107, 53, 0.15);
}

.navbar.scrolled {
  background: linear-gradient(
    135deg,
    rgba(26, 26, 26, 0.99) 0%,
    rgba(42, 42, 42, 0.98) 100%
  );
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3),
    0 4px 12px rgba(255, 107, 53, 0.15);
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 20px;
  position: relative;
  max-width: 1400px;
}

.nav-brand {
  display: flex;
  align-items: center;
  color: white;
  text-decoration: none;
  transition: all 0.3s ease;
  z-index: 1001;
}

.nav-brand:hover {
  transform: scale(1.02);
}

.logo {
  height: 45px;
  width: auto;
  max-width: 500px;
  transform: scaleX(2.2);
  margin-right: 15px;
  filter: drop-shadow(0 2px 8px rgba(255, 107, 53, 0.3));
  transition: all 0.3s ease;
}

.logo:hover {
  filter: drop-shadow(0 4px 12px rgba(255, 107, 53, 0.5));
}

.brand-text {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, #ffffff 0%, #ff6b35 70%, #ffc107 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 0.5px;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.nav-menu {
  display: flex;
  list-style: none;
  align-items: center;
  gap: 0.2rem;
}

.nav-menu li {
  position: relative;
}

.nav-link {
  color: #e0e0e0;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  padding: 0.8rem 1.2rem;
  border-radius: 10px;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-link::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 107, 53, 0.15),
    transparent
  );
  transition: left 0.6s ease;
}

.nav-link:hover,
.nav-link.active {
  color: #ff6b35;
  background: rgba(255, 107, 53, 0.12);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(255, 107, 53, 0.2);
}

.nav-link:hover::before {
  left: 100%;
}

.nav-link.active {
  background: linear-gradient(
    135deg,
    rgba(255, 107, 53, 0.15) 0%,
    rgba(255, 193, 7, 0.1) 100%
  );
  border: 1px solid rgba(255, 107, 53, 0.3);
  color: #ff6b35;
}

.contact-btn {
  background: linear-gradient(135deg, #ff6b35 0%, #ff8c42 100%);
  color: white !important;
  font-weight: 600;
  margin-left: 1rem;
  box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.contact-btn:hover {
  background: linear-gradient(135deg, #ff8c42 0%, #ff6b35 100%);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(255, 107, 53, 0.4);
}

.dropdown-toggle {
  position: relative;
}

.dropdown-icon {
  transition: transform 0.3s ease;
  opacity: 0.7;
}

.dropdown:hover .dropdown-icon {
  transform: rotate(180deg);
  opacity: 1;
}

.nav-link.active {
  background: linear-gradient(
    135deg,
    rgba(255, 107, 53, 0.15) 0%,
    rgba(255, 193, 7, 0.1) 100%
  );
  border: 1px solid rgba(255, 107, 53, 0.3);
}

/* 下拉菜单 */
.dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%) translateY(-10px);
  background: linear-gradient(
    135deg,
    rgba(26, 26, 26, 0.98) 0%,
    rgba(42, 42, 42, 0.95) 100%
  );
  backdrop-filter: blur(20px);
  min-width: 600px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3), 0 8px 30px rgba(255, 107, 53, 0.1);
  border-radius: 16px;
  border: 1px solid rgba(255, 107, 53, 0.15);
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 1001;
  padding: 2rem;
}

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

.dropdown-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.dropdown-section {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.dropdown-title {
  color: #ff6b35;
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid rgba(255, 107, 53, 0.2);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  border-radius: 12px;
  text-decoration: none;
  transition: all 0.3s ease;
  border: 1px solid transparent;
}

.dropdown-item:hover {
  background: rgba(255, 107, 53, 0.1);
  border-color: rgba(255, 107, 53, 0.2);
  transform: translateX(5px);
  box-shadow: 0 4px 15px rgba(255, 107, 53, 0.15);
}

.item-icon {
  font-size: 1.5rem;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 107, 53, 0.1);
  border-radius: 10px;
  flex-shrink: 0;
}

.item-content {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.item-name {
  color: #e0e0e0;
  font-weight: 600;
  font-size: 0.95rem;
}

.item-desc {
  color: #b0b0b0;
  font-size: 0.8rem;
  line-height: 1.4;
}

.dropdown-item:hover .item-name {
  color: #ff6b35;
}

.dropdown-item:hover .item-desc {
  color: #d0d0d0;
}

/* 移动端菜单切换 */
.nav-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 8px;
  transition: all 0.3s ease;
  z-index: 1002;
}

.nav-toggle:hover {
  background: rgba(255, 107, 53, 0.1);
}

.hamburger-line {
  width: 28px;
  height: 3px;
  background: linear-gradient(135deg, #ffffff 0%, #ff6b35 100%);
  margin: 3px 0;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 2px;
  transform-origin: center;
}

.nav-toggle.active .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.nav-toggle.active .hamburger-line:nth-child(2) {
  opacity: 0;
  transform: scale(0);
}

.nav-toggle.active .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* 主横幅区域 */
.hero {
  background: linear-gradient(135deg, #1a1a1a 0%, #2a2a2a 50%, #3a3a3a 100%);
  color: white;
  padding: 140px 0 100px;
  display: flex;
  align-items: center;
  min-height: 100vh;
  position: relative;
  overflow: hidden;
  text-align: center;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
      circle at 20% 80%,
      rgba(255, 107, 53, 0.1) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 80% 20%,
      rgba(255, 193, 7, 0.08) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 40% 40%,
      rgba(220, 53, 69, 0.05) 0%,
      transparent 50%
    );
  pointer-events: none;
  z-index: 1;
  animation: float 8s ease-in-out infinite;
}

.hero::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("../images/hero-bg.jpg") center/cover;
  opacity: 0.05;
  z-index: 2;
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 3;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px;
  animation: fadeInUp 1s ease-out;
}

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

.hero-content h1 {
  font-size: 4rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
  line-height: 1.1;
  background: linear-gradient(135deg, #ffffff 0%, #ff6b35 50%, #ffc107 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
  letter-spacing: -0.02em;
  animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-content p {
  font-size: 1.4rem;
  margin-bottom: 2.5rem;
  color: #e0e0e0;
  line-height: 1.7;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  font-weight: 300;
  animation: fadeInUp 1s ease-out 0.4s both;
}

.hero-buttons {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 1s ease-out 0.6s both;
}

.hero-image img {
  width: 100%;
  height: auto;
  max-width: 500px;
  filter: drop-shadow(0 10px 20px rgba(255, 107, 53, 0.2));
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-20px);
  }
}

/* 联系表单 */
.contact-form {
  background: linear-gradient(135deg, #2a2a2a 0%, #1f1f1f 100%);
  padding: 2.5rem;
  border-radius: 16px;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3), 0 5px 15px rgba(0, 0, 0, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 107, 53, 0.1);
  position: relative;
  overflow: hidden;
}

.contact-form::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(
    circle,
    rgba(255, 107, 53, 0.03) 0%,
    transparent 70%
  );
  animation: float 6s ease-in-out infinite;
  pointer-events: none;
}

.form-group {
  margin-bottom: 1.5rem;
  position: relative;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: #f0f0f0;
  font-weight: 500;
  transition: color 0.3s ease;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 107, 53, 0.2);
  border-radius: 8px;
  color: #f0f0f0;
  font-size: 1rem;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #ff6b35;
  background: rgba(255, 107, 53, 0.1);
  box-shadow: 0 0 15px rgba(255, 107, 53, 0.3);
  transform: translateY(-2px);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #999999;
}

.form-submit {
  text-align: center;
  margin-top: 2rem;
}

.form-submit .btn {
  min-width: 200px;
  animation: glow 2s ease-in-out infinite alternate;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 0.8;
    transform: scale(1);
  }
  50% {
    opacity: 1;
    transform: scale(1.05);
  }
}

@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

@keyframes glow {
  0%,
  100% {
    box-shadow: 0 0 5px rgba(255, 107, 53, 0.2);
  }
  50% {
    box-shadow: 0 0 20px rgba(255, 107, 53, 0.4),
      0 0 30px rgba(255, 107, 53, 0.2);
  }
}

/* 按钮样式 */
.btn {
  display: inline-block;
  padding: 16px 40px;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  text-align: center;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 2px solid transparent;
  cursor: pointer;
  font-size: 1.1rem;
  letter-spacing: 0.5px;
  position: relative;
  overflow: hidden;
  text-transform: uppercase;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transition: left 0.6s ease;
}

.btn-primary {
  background: linear-gradient(135deg, #ff6b35 0%, #ffc107 100%);
  color: #ffffff;
  border-color: #ff6b35;
  position: relative;
  overflow: hidden;
  background-clip: padding-box;
}

.btn-primary::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, #ff8c42 0%, #ffdb3a 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
  border-radius: 12px;
  z-index: -1;
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 25px rgba(255, 107, 53, 0.4),
    0 4px 12px rgba(255, 193, 7, 0.3);
}

.btn-primary:hover::after {
  opacity: 1;
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: #e0e0e0;
  border-color: rgba(255, 107, 53, 0.3);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 107, 53, 0.1);
  color: #ff6b35;
  border-color: #ff6b35;
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 25px rgba(255, 107, 53, 0.2);
}

.btn-secondary:hover::before {
  left: 100%;
}

.btn-outline {
  background: transparent;
  color: #cccccc;
  border-color: #cccccc;
  position: relative;
}

.btn-outline:hover {
  background: rgba(204, 204, 204, 0.1);
  color: #dc3545;
  border-color: #dc3545;
  transform: translateY(-2px);
}

/* 章节标题 */
.section-title {
  text-align: center;
  font-size: 2.8rem;
  font-weight: 800;
  margin-bottom: 4rem;
  color: #f0f0f0;
  position: relative;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: -1rem;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(
    90deg,
    var(--primary-color) 0%,
    var(--secondary-color) 100%
  );
  border-radius: 2px;
}

/* 服务区域 */
.services {
  padding: 100px 0;
  background: linear-gradient(135deg, #3a3a3a 0%, #2a2a2a 100%);
  position: relative;
  overflow: hidden;
}

.services::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
      circle at 10% 20%,
      rgba(255, 107, 53, 0.03) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 90% 80%,
      rgba(255, 193, 7, 0.02) 0%,
      transparent 50%
    );
  pointer-events: none;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2.5rem;
  position: relative;
  z-index: 1;
}

.service-card {
  background: linear-gradient(135deg, #2a2a2a 0%, #1f1f1f 100%);
  padding: 2.5rem;
  border-radius: 20px;
  text-align: center;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3), 0 1px 8px rgba(0, 0, 0, 0.2);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid rgba(255, 107, 53, 0.1);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #ff6b35 0%, #ffc107 50%, #dc3545 100%);
  transform: scaleX(0);
  transition: transform 0.4s ease;
  transform-origin: left;
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-card:hover {
  transform: translateY(-15px) scale(1.02);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4),
    0 10px 20px rgba(255, 107, 53, 0.2);
  border-color: rgba(255, 107, 53, 0.3);
}

.service-icon {
  width: 90px;
  height: 90px;
  margin: 0 auto 2rem;
  background: linear-gradient(135deg, #ff6b35 0%, #ffc107 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 8px 20px rgba(255, 107, 53, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.service-icon::before {
  content: "";
  position: absolute;
  top: -5px;
  left: -5px;
  right: -5px;
  bottom: -5px;
  background: linear-gradient(135deg, #ff6b35 0%, #ffc107 50%, #dc3545 100%);
  border-radius: 50%;
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: -1;
}

.service-icon img {
  width: 45px;
  height: 45px;
  filter: brightness(0) invert(1);
}

.service-card:hover .service-icon {
  transform: scale(1.1) rotate(5deg);
  box-shadow: 0 12px 30px rgba(255, 107, 53, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.service-card:hover .service-icon::before {
  opacity: 1;
}

.service-card h3 {
  font-size: 1.6rem;
  margin-bottom: 1.2rem;
  color: #f0f0f0;
  font-weight: 700;
  transition: color 0.3s ease;
  letter-spacing: 0.3px;
}

.service-card:hover h3 {
  color: #ff6b35;
}

.service-card p {
  color: #b0b0b0;
  line-height: 1.7;
  margin-bottom: 2rem;
  font-size: 1rem;
  transition: color 0.3s ease;
}

.service-card:hover p {
  color: #d0d0d0;
}

.service-link {
  color: #ff6b35;
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  transition: all 0.3s ease;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  background: rgba(255, 107, 53, 0.1);
  border: 1px solid rgba(255, 107, 53, 0.2);
  position: relative;
  overflow: hidden;
}

.service-link::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 107, 53, 0.1),
    transparent
  );
  transition: left 0.5s ease;
}

.service-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: #ffc107;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.3s ease;
}

.service-link:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.service-link:hover {
  color: #ffffff;
  background: rgba(255, 107, 53, 0.2);
  border-color: #ff6b35;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
}

.service-link:hover::before {
  left: 100%;
}

/* 案例预览 */
.cases-preview {
  padding: 120px 0;
  background: linear-gradient(135deg, #3a3a3a 0%, #2a2a2a 100%);
  position: relative;
  overflow: hidden;
}

.cases-preview::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
      circle at 20% 80%,
      rgba(255, 107, 53, 0.04) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 80% 20%,
      rgba(255, 193, 7, 0.03) 0%,
      transparent 50%
    );
  pointer-events: none;
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: 2.5rem;
  margin-bottom: 4rem;
  position: relative;
  z-index: 1;
}

.case-card {
  background: linear-gradient(135deg, #2a2a2a 0%, #1f1f1f 100%);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3), 0 1px 8px rgba(0, 0, 0, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid rgba(255, 107, 53, 0.1);
  position: relative;
}

.case-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, #ff6b35 0%, #ffc107 50%, #dc3545 100%);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.case-card:hover {
  transform: translateY(-12px) scale(1.01);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4),
    0 10px 25px rgba(255, 107, 53, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 107, 53, 0.3);
}

.case-card:hover::before {
  opacity: 1;
}

.case-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.3s ease;
}

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

.case-content {
  padding: 1.5rem;
}

.case-content h3 {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
  color: #f0f0f0;
}

.case-content p {
  color: #999999;
  margin-bottom: 1rem;
}

.case-tag {
  background: rgba(255, 193, 7, 0.1);
  color: #ffc107;
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 0.8rem;
  font-weight: 500;
  border: 1px solid rgba(255, 193, 7, 0.2);
}

/* 客户评价 */
.testimonials {
  padding: 120px 0;
  background: linear-gradient(135deg, #3a3a3a 0%, #2a2a2a 100%);
  position: relative;
  overflow: hidden;
}

.testimonials::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    45deg,
    rgba(255, 107, 53, 0.05) 0%,
    rgba(58, 58, 58, 0.05) 100%
  );
  pointer-events: none;
}

.testimonials-slider {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.testimonial-item {
  text-align: center;
  padding: 2.5rem;
  background: linear-gradient(135deg, #2a2a2a 0%, #1f1f1f 100%);
  border-radius: 20px;
  border: 1px solid rgba(255, 107, 53, 0.1);
  margin: 1rem;
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.3), 0 2px 10px rgba(0, 0, 0, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.testimonial-item::before {
  content: '"';
  position: absolute;
  top: 1rem;
  left: 1.5rem;
  font-size: 4rem;
  color: rgba(255, 107, 53, 0.1);
  font-family: serif;
  line-height: 1;
}

.testimonial-content p {
  font-size: 1.2rem;
  font-style: italic;
  color: #999999;
  margin-bottom: 2rem;
  line-height: 1.8;
  position: relative;
}

.testimonial-content p::before,
.testimonial-content p::after {
  content: '"';
  color: #dc3545;
  font-size: 2rem;
  position: absolute;
}

.testimonial-content p::before {
  left: -1rem;
  top: -0.5rem;
}

.testimonial-content p::after {
  right: -1rem;
  bottom: -1rem;
}

.testimonial-author strong {
  display: block;
  color: #f0f0f0;
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.testimonial-author span {
  color: #ffc107;
  font-size: 0.9rem;
}

/* 新闻预览 */
.news-preview {
  padding: 120px 0;
  background: linear-gradient(135deg, #2a2a2a 0%, #1a1a1a 100%);
  position: relative;
  overflow: hidden;
}

.news-preview::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
      circle at 10% 20%,
      rgba(255, 107, 53, 0.03) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 90% 80%,
      rgba(255, 193, 7, 0.02) 0%,
      transparent 50%
    );
  pointer-events: none;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: 2.5rem;
  margin-bottom: 4rem;
  position: relative;
  z-index: 1;
}

.news-item {
  background: linear-gradient(135deg, #2a2a2a 0%, #1f1f1f 100%);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.25), 0 1px 6px rgba(0, 0, 0, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid rgba(255, 107, 53, 0.1);
  position: relative;
}

.news-item::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    135deg,
    rgba(255, 107, 53, 0.02) 0%,
    transparent 50%
  );
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.news-item:hover {
  transform: translateY(-10px) scale(1.01);
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.35),
    0 8px 20px rgba(255, 107, 53, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 107, 53, 0.25);
}

.news-item:hover::after {
  opacity: 1;
}

.news-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.news-item:hover img {
  transform: scale(1.05);
}

.news-content {
  padding: 1.5rem;
}

.news-date {
  color: #ffc107;
  font-size: 0.9rem;
  font-weight: 500;
}

.news-content h3 {
  font-size: 1.2rem;
  margin: 0.5rem 0;
  color: #f0f0f0;
}

.news-content p {
  color: #999999;
  margin-bottom: 1rem;
  line-height: 1.6;
}

.news-link {
  color: #dc3545;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  position: relative;
  padding-bottom: 2px;
}

.news-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: #dc3545;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.3s ease;
}

.news-link:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* 联系CTA */
.contact-cta {
  padding: 100px 0;
  background: linear-gradient(135deg, #2a2a2a 0%, #3a3a3a 100%);
  color: #f0f0f0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.contact-cta::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
      circle at 30% 70%,
      rgba(255, 107, 53, 0.08) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 70% 30%,
      rgba(255, 193, 7, 0.06) 0%,
      transparent 50%
    );
  pointer-events: none;
}

.cta-content {
  position: relative;
  z-index: 1;
  animation: fadeInUp 1s ease-out;
}

.cta-content h2 {
  font-size: 2.8rem;
  margin-bottom: 1.5rem;
  color: #f0f0f0;
  font-weight: 700;
  background: linear-gradient(135deg, #ffffff 0%, #ff6b35 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.01em;
}

.cta-content p {
  font-size: 1.3rem;
  margin-bottom: 2.5rem;
  color: #b0b0b0;
  line-height: 1.8;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  font-weight: 300;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  margin-top: 3rem;
}

/* 页脚 */
footer {
  background: linear-gradient(135deg, #1a1a1a 0%, #0f0f0f 100%);
  color: #ccc;
  padding: 3rem 0 1rem;
  border-top: 1px solid rgba(255, 107, 53, 0.1);
  position: relative;
  box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.02);
}

footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 107, 53, 0.3) 50%,
    transparent 100%
  );
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
  position: relative;
  z-index: 1;
}

.footer-about,
.footer-links,
.footer-contact {
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.02);
  border-radius: 12px;
  border: 1px solid rgba(255, 107, 53, 0.05);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.03);
  transition: all 0.3s ease;
}

.footer-about:hover,
.footer-links:hover,
.footer-contact:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 107, 53, 0.1);
}

.footer-content h4 {
  color: #f0f0f0;
  font-size: 1.2rem;
  margin-bottom: 1.5rem;
  position: relative;
}

.footer-content h4::after {
  content: "";
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 40px;
  height: 2px;
  background: #ff6b35;
}

.footer-about p {
  line-height: 1.8;
}

.footer-links ul {
  list-style: none;
  padding: 0;
}

.footer-links ul li {
  margin-bottom: 0.8rem;
}

.footer-section ul li a {
  color: #fff !important;
  text-decoration: none;
  transition: all 0.3s ease;
}

.footer-section ul li a:visited,
.footer-section ul li a:active {
  color: #fff !important;
}

.footer-section ul li a:hover {
  color: #ff6b35 !important;
  padding-left: 5px;
}

.footer-contact p {
  margin-bottom: 1rem;
}

.social-links {
  margin-top: 1.5rem;
}

.social-links a {
  display: inline-block;
  width: 40px;
  height: 40px;
  line-height: 40px;
  text-align: center;
  border-radius: 50%;
  background: linear-gradient(
    135deg,
    rgba(255, 107, 53, 0.1) 0%,
    rgba(255, 193, 7, 0.05) 100%
  );
  color: #ff6b35;
  margin-right: 0.5rem;
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 107, 53, 0.2);
}

.social-links a:hover {
  background: linear-gradient(135deg, #ff6b35 0%, #ffc107 100%);
  color: #ffffff;
  transform: translateY(-3px) scale(1.1);
  box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4),
    0 2px 8px rgba(255, 193, 7, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.2);
  border-color: #ff6b35;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.9rem;
}

.footer-bottom a {
  color: #ffc107;
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-bottom a:hover {
  text-decoration: underline;
}

/* 滚动条美化 */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: #2a2a2a;
}

::-webkit-scrollbar-thumb {
  background: #555555;
  border-radius: 10px;
  border: 2px solid #2a2a2a;
}

::-webkit-scrollbar-thumb:hover {
  background: #ff6b35;
}

/* 添加滚动动画类 */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

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

/* 添加更多视觉层次效果 */
.section-divider {
  height: 2px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 107, 53, 0.5) 50%,
    transparent 100%
  );
  margin: 4rem 0;
  position: relative;
}

.section-divider::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, #ff6b35 0%, #ffc107 100%);
  border-radius: 2px;
  box-shadow: 0 0 10px rgba(255, 107, 53, 0.5);
}

/* 增强整体页面深度 */
body {
  background-attachment: fixed;
  background-image: radial-gradient(
      circle at 10% 20%,
      rgba(255, 107, 53, 0.02) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 90% 80%,
      rgba(255, 193, 7, 0.01) 0%,
      transparent 50%
    );
}