/**
 * 楚海能源官网 - 主样式文件
 * 包含所有页面区块的样式
 */

/* ========== 基础重置 ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
}

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

a {
  text-decoration: none;
  color: inherit;
}

ul, ol {
  list-style: none;
}

/* ========== 通用布局 - 更大气 ========== */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section {
  padding: var(--spacing-4xl) var(--spacing-lg);
}

/* ========== 区块标题 - 更有设计感 ========== */
.section-title {
  text-align: center;
  margin-bottom: var(--spacing-4xl);
  position: relative;
}

.section-title h2 {
  font-size: var(--font-size-h2);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.5px;
  line-height: 1.3;
}

.section-title p {
  font-size: var(--font-size-body-lg);
  color: var(--color-text-secondary);
  max-width: 700px;
  margin: 0 auto;
  line-height: var(--line-height-relaxed);
}

/* 添加装饰性下划线 */
.section-title::after {
  content: '';
  position: absolute;
  bottom: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary-600), var(--color-accent-gold));
  border-radius: 2px;
}

/* ========== 按钮组件 - 更精致的设计 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md) var(--spacing-2xl);
  border: none;
  border-radius: var(--border-radius-lg);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-bold);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
  letter-spacing: 0.3px;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary-600), var(--color-primary-500));
  color: var(--color-text-white);
  box-shadow: 0 4px 12px rgba(0, 102, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 102, 255, 0.4);
  background: linear-gradient(135deg, var(--color-primary-500), var(--color-primary-400));
}

.btn-secondary {
  background: transparent;
  color: var(--color-text-white);
  border: 2px solid rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--color-text-white);
  transform: translateY(-3px);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary-600);
  border: 2px solid var(--color-primary-600);
  padding: var(--spacing-md) var(--spacing-xl);
}

.btn-outline:hover {
  background: linear-gradient(135deg, var(--color-primary-600), var(--color-primary-500));
  color: var(--color-text-white);
  transform: translateY(-3px);
  box-shadow: 0 4px 12px rgba(0, 102, 255, 0.3);
}

.btn-lg {
  padding: var(--spacing-lg) var(--spacing-3xl);
  font-size: var(--font-size-body-lg);
}

/* 添加按钮点击波纹效果 */
.btn::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.3s ease, height 0.3s ease;
}

.btn:active::after {
  width: 200px;
  height: 200px;
  opacity: 0;
}

/* ========== 导航栏 - 更高端的设计 ========== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 90px;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-sm);
  z-index: var(--z-fixed);
  transition: all 0.3s ease;
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.nav-logo img {
  height: 40px;
  width: auto;
  display: block;
  filter: drop-shadow(0 2px 8px rgba(0, 102, 255, 0.2));
}

.nav-logo-text {
  font-size: 24px;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary-600);
  letter-spacing: -0.5px;
  white-space: nowrap;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-2xl);
}

.nav-link {
  font-size: var(--font-size-body-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  transition: all var(--transition-base);
  position: relative;
  padding: var(--spacing-sm) 0;
  letter-spacing: 0.3px;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary-600);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary-600), var(--color-accent-gold));
  transition: width var(--transition-base);
  border-radius: 2px;
}

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

.nav-cta {
  margin-left: var(--spacing-lg);
}

/* 移动端菜单按钮 */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius-md);
  transition: all var(--transition-base);
}

.nav-toggle:hover {
  background: rgba(0, 102, 255, 0.1);
}

.nav-toggle span {
  width: 28px;
  height: 3px;
  background: var(--color-text-primary);
  transition: all var(--transition-base);
  border-radius: 2px;
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
  background: var(--color-primary-600);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
  transform: translateX(-10px);
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
  background: var(--color-primary-600);
}

/* ========== Hero 区块 - 更有视觉冲击力 ========== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background: linear-gradient(135deg,
    var(--color-primary-700) 0%,
    var(--color-primary-600) 50%,
    var(--color-secondary-500) 100%);
  color: var(--color-text-white);
  padding: var(--spacing-4xl) var(--spacing-xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

/* 动态光效背景 */
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
  animation: rotate 20s linear infinite;
}

/* 添加第二层光效 */
.hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(255, 184, 0, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(255, 107, 53, 0.15) 0%, transparent 50%);
  pointer-events: none;
}

@keyframes rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 1000px;
}

.hero-title {
  font-size: 72px;
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-lg);
  line-height: 1.2;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  letter-spacing: -1px;
  background: linear-gradient(135deg, #ffffff 0%, #e6f2ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 28px;
  font-weight: var(--font-weight-medium);
  opacity: 0.95;
  margin-bottom: var(--spacing-3xl);
  line-height: 1.6;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-lg);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--spacing-xl);
}

/* 优化按钮样式 */
.hero .btn-primary {
  background: linear-gradient(135deg, var(--color-accent-gold) 0%, var(--color-accent-orange) 100%);
  box-shadow: 0 4px 20px rgba(255, 184, 0, 0.4);
  padding: var(--spacing-lg) var(--spacing-3xl);
  font-size: var(--font-size-body-lg);
  font-weight: var(--font-weight-bold);
  transition: all 0.3s ease;
}

.hero .btn-primary:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(255, 184, 0, 0.6);
}

.hero .btn-secondary {
  border: 2px solid rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(10px);
  padding: var(--spacing-lg) var(--spacing-3xl);
  font-size: var(--font-size-body-lg);
  font-weight: var(--font-weight-bold);
  transition: all 0.3s ease;
}

.hero .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.8);
  transform: translateY(-4px);
}

.scroll-indicator {
  position: absolute;
  bottom: var(--spacing-3xl);
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
}

.scroll-indicator svg {
  width: 40px;
  height: 40px;
  color: var(--color-text-white);
  opacity: 0.8;
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.2));
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  40% {
    transform: translateX(-50%) translateY(-15px);
  }
  60% {
    transform: translateX(-50%) translateY(-7px);
  }
}

/* ========== 核心业务区块 ========== */
.business-section {
  background: var(--color-bg-secondary);
  position: relative;
}

/* 添加渐变分隔线 */
.business-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg,
    var(--color-primary-600) 0%,
    var(--color-accent-gold) 50%,
    var(--color-secondary-500) 100%);
}

.business-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-2xl);
}

/* 精致卡片设计 - 玻璃态 + 光效 */
.business-card {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  padding: var(--spacing-3xl) var(--spacing-2xl);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-md);
  text-align: center;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid rgba(0, 102, 255, 0.1);
  position: relative;
  overflow: hidden;
}

/* 添加顶部光效 */
.business-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg,
    var(--color-primary-500),
    var(--color-accent-gold));
  opacity: 0;
  transition: opacity 0.4s ease;
}

.business-card:hover {
  transform: translateY(-12px);
  box-shadow:
    var(--shadow-xl),
    0 0 0 1px rgba(0, 102, 255, 0.2),
    0 0 30px rgba(0, 102, 255, 0.15);
  border-color: rgba(0, 102, 255, 0.3);
}

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

.business-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-xl);
  color: var(--color-text-white);
  background: linear-gradient(135deg, var(--color-primary-500), var(--color-primary-600));
  border-radius: var(--border-radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 20px rgba(0, 102, 255, 0.3);
  transition: all 0.3s ease;
}

.business-card:hover .business-icon {
  transform: scale(1.1) rotate(5deg);
  box-shadow: 0 12px 30px rgba(0, 102, 255, 0.4);
}

.business-icon svg {
  width: 40px;
  height: 40px;
}

.business-title {
  font-size: var(--font-size-h4);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
  letter-spacing: 0.5px;
}

.business-desc {
  font-size: var(--font-size-body);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* ========== 数据展示区块 ========== */
.stats-section {
  background: linear-gradient(135deg, var(--color-primary-100) 0%, var(--color-primary-200) 100%);
  position: relative;
  overflow: hidden;
}

/* 添加背景纹理 */
.stats-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 30% 50%, rgba(0, 102, 255, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-2xl);
  text-align: center;
  position: relative;
  z-index: 1;
}

.stat-item {
  padding: var(--spacing-2xl) var(--spacing-lg);
  background: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(10px);
  border-radius: var(--border-radius-xl);
  transition: all 0.3s ease;
  border: 1px solid rgba(255, 255, 255, 0.8);
}

.stat-item:hover {
  background: rgba(255, 255, 255, 0.8);
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.stat-number {
  font-size: 56px;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary-600);
  font-family: var(--font-family-number);
  margin-bottom: var(--spacing-sm);
  line-height: 1;
  background: linear-gradient(135deg, var(--color-primary-600) 0%, var(--color-accent-gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: var(--font-size-body-lg);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
}

/* ========== 关于我们区块 ========== */
.about-section {
  background: var(--color-bg-primary);
  position: relative;
  overflow: hidden;
}

/* 添加背景装饰 */
.about-section::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 40%;
  height: 100%;
  background: radial-gradient(circle, var(--color-primary-100) 0%, transparent 70%);
  opacity: 0.5;
  pointer-events: none;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4xl);
  align-items: center;
  position: relative;
  z-index: 1;
}

.about-image {
  width: 100%;
  height: 500px;
  background: linear-gradient(135deg,
    var(--color-primary-500) 0%,
    var(--color-secondary-500) 50%,
    var(--color-accent-gold) 100%);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--color-text-white);
  font-size: var(--font-size-h2);
  font-weight: var(--font-weight-bold);
  position: relative;
  overflow: hidden;
}

/* 添加图像内部光效 */
.about-image::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.2) 0%, transparent 60%);
  animation: rotate 15s linear infinite;
}

.about-content h2 {
  font-size: var(--font-size-h2);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-xl);
  color: var(--color-text-primary);
  line-height: 1.3;
  letter-spacing: -0.5px;
}

.about-text {
  font-size: var(--font-size-body-lg);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-xl);
  font-weight: var(--font-weight-regular);
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

.about-feature {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  color: var(--color-text-secondary);
  font-size: var(--font-size-body-lg);
  padding: var(--spacing-md);
  background: rgba(0, 102, 255, 0.03);
  border-radius: var(--border-radius-md);
  transition: all 0.3s ease;
}

.about-feature:hover {
  background: rgba(0, 102, 255, 0.08);
  transform: translateX(5px);
}

.about-feature svg {
  width: 24px;
  height: 24px;
  color: var(--color-accent-gold);
  flex-shrink: 0;
}

/* ========== 业务范围区块 ========== */
.services-section {
  background: var(--color-bg-secondary);
  position: relative;
}

/* 添加渐变分隔线 */
.services-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg,
    var(--color-secondary-500) 0%,
    var(--color-accent-gold) 50%,
    var(--color-primary-600) 100%);
}

.services-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2xl);
}

.service-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--spacing-2xl);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  padding: var(--spacing-3xl);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-md);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid rgba(0, 102, 255, 0.1);
  position: relative;
  overflow: hidden;
}

/* 添加左侧光效 */
.service-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg,
    var(--color-primary-500),
    var(--color-accent-gold));
  opacity: 0;
  transition: opacity 0.4s ease;
}

.service-item:hover {
  transform: translateX(12px);
  box-shadow:
    var(--shadow-xl),
    0 0 0 1px rgba(0, 102, 255, 0.2);
  border-color: rgba(0, 102, 255, 0.3);
}

.service-item:hover::before {
  opacity: 1;
}

.service-icon {
  width: 100px;
  height: 100px;
  background: linear-gradient(135deg, var(--color-primary-500), var(--color-secondary-500));
  border-radius: var(--border-radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 8px 20px rgba(0, 102, 255, 0.3);
  transition: all 0.3s ease;
}

.service-item:hover .service-icon {
  transform: scale(1.05);
  box-shadow: 0 12px 30px rgba(0, 102, 255, 0.4);
}

.service-icon svg {
  width: 48px;
  height: 48px;
  color: var(--color-text-white);
}

.service-content h3 {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
  letter-spacing: 0.5px;
}

.service-content p {
  font-size: var(--font-size-body-lg);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-lg);
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.service-tag {
  padding: var(--spacing-sm) var(--spacing-md);
  background: linear-gradient(135deg, var(--color-primary-100), var(--color-primary-200));
  color: var(--color-primary-600);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-body-sm);
  font-weight: var(--font-weight-semibold);
  transition: all 0.3s ease;
}

.service-item:hover .service-tag {
  background: linear-gradient(135deg, var(--color-accent-gold), var(--color-accent-orange));
  color: var(--color-text-white);
  transform: translateY(-2px);
}

/* ========== 联系我们区块 ========== */
.contact-section {
  background: var(--color-bg-primary);
  position: relative;
  overflow: hidden;
}

/* 添加背景装饰 */
.contact-section::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30%;
  height: 100%;
  background: radial-gradient(circle, var(--color-secondary-100) 0%, transparent 70%);
  opacity: 0.5;
  pointer-events: none;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4xl);
  position: relative;
  z-index: 1;
}

.contact-form {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  padding: var(--spacing-3xl);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(0, 102, 255, 0.1);
  transition: box-shadow 0.3s ease;
}

.contact-form:hover {
  box-shadow: var(--shadow-xl);
}

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

.form-label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  letter-spacing: 0.3px;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  border: 2px solid var(--color-bg-tertiary);
  border-radius: var(--border-radius-lg);
  font-size: var(--font-size-body-lg);
  font-family: var(--font-family-primary);
  transition: all var(--transition-base);
  background: var(--color-bg-primary);
  letter-spacing: 0.3px;
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary-600);
  box-shadow: 0 0 0 4px var(--color-primary-100);
  background: var(--color-bg-primary);
}

.form-input:hover,
.form-textarea:hover {
  border-color: rgba(0, 102, 255, 0.4);
}

.form-textarea {
  min-height: 140px;
  resize: vertical;
}

.contact-form .btn-primary {
  width: 100%;
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: var(--font-size-body-lg);
  font-weight: var(--font-weight-bold);
  background: linear-gradient(135deg, var(--color-primary-500), var(--color-primary-600));
  box-shadow: 0 4px 16px rgba(0, 102, 255, 0.3);
}

.contact-form .btn-primary:hover {
  box-shadow: 0 8px 24px rgba(0, 102, 255, 0.4);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2xl);
}

.contact-info h3 {
  font-size: var(--font-size-h2);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xl);
  letter-spacing: -0.5px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
  background: rgba(0, 102, 255, 0.03);
  border-radius: var(--border-radius-lg);
  transition: all 0.3s ease;
  border: 1px solid transparent;
}

.contact-item:hover {
  background: rgba(0, 102, 255, 0.08);
  transform: translateX(8px);
  border-color: rgba(0, 102, 255, 0.2);
}

.contact-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--color-primary-500), var(--color-primary-600));
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(0, 102, 255, 0.3);
}

.contact-icon svg {
  width: 28px;
  height: 28px;
  color: var(--color-text-white);
}

.contact-detail h4 {
  font-size: var(--font-size-body-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xs);
  letter-spacing: 0.3px;
}

.contact-detail p {
  font-size: var(--font-size-body);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* ========== 页脚 ========== */
.footer {
  background: linear-gradient(135deg, var(--color-bg-dark) 0%, var(--color-primary-700) 100%);
  color: var(--color-text-white);
  padding: var(--spacing-4xl) var(--spacing-md) var(--spacing-2xl);
  position: relative;
  overflow: hidden;
}

/* 添加顶部渐变分隔线 */
.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg,
    var(--color-primary-600) 0%,
    var(--color-accent-gold) 50%,
    var(--color-secondary-500) 100%);
}

/* 添加背景装饰 */
.footer::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 20%, rgba(0, 102, 255, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-3xl);
  position: relative;
  z-index: 1;
}

.footer-brand h3 {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-lg);
  background: linear-gradient(135deg, #ffffff, var(--color-primary-300));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-brand p {
  font-size: var(--font-size-body);
  color: rgba(255, 255, 255, 0.8);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-lg);
}

.footer-links h4 {
  font-size: var(--font-size-body-lg);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-lg);
  color: var(--color-text-white);
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.footer-links a {
  font-size: var(--font-size-body);
  color: rgba(255, 255, 255, 0.7);
  transition: all var(--transition-base);
  position: relative;
  padding-left: 0;
}

.footer-links a::before {
  content: '';
  position: absolute;
  left: -12px;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  background: var(--color-accent-gold);
  border-radius: 50%;
  opacity: 0;
  transition: all var(--transition-base);
}

.footer-links a:hover {
  color: var(--color-text-white);
  padding-left: 16px;
}

.footer-links a:hover::before {
  opacity: 1;
  left: 0;
}

.footer-bottom {
  padding-top: var(--spacing-2xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  font-size: var(--font-size-body-sm);
  color: rgba(255, 255, 255, 0.6);
  position: relative;
  z-index: 1;
}

/* ========== 返回顶部按钮 ========== */
.back-to-top {
  position: fixed;
  bottom: var(--spacing-lg);
  right: var(--spacing-lg);
  width: 48px;
  height: 48px;
  background: var(--color-primary-600);
  color: var(--color-text-white);
  border: none;
  border-radius: var(--border-radius-full);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: var(--z-sticky);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--color-primary-500);
  transform: translateY(-4px);
}

.back-to-top svg {
  width: 24px;
  height: 24px;
}

/* ========== 表单消息 ========== */
.form-message {
  padding: var(--spacing-md);
  border-radius: var(--border-radius-md);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-body-sm);
  display: none;
}

.form-message--success {
  background: var(--color-secondary-100);
  color: var(--color-secondary-600);
  border: 1px solid var(--color-secondary-500);
}

.form-message--error {
  background: #FFE6E6;
  color: var(--color-error);
  border: 1px solid var(--color-error);
}

/* ========== 强制所有内容始终可见 ========== */
/* 修复内容消失问题 - 最高优先级 - 特别是移动端 */
.business-card,
.stat-item,
.service-item,
.about-content,
.contact-form,
.contact-info,
.hero-content,
section > *,
.about-grid,
.about-image,
.about-features,
.about-feature,
.footer-content,
.footer-brand,
.footer-links,
.nav-menu,
.nav-logo {
  opacity: 1 !important;
  transform: none !important;
  animation: none !important;
  visibility: visible !important;
}

/* 禁用所有入场动画 */
.business-card,
.stat-item,
.service-item,
.about-content,
.contact-form,
.contact-info {
  opacity: 1 !important;
  transform: none !important;
  transition: none !important;
}

/* ========== 导航栏滚动状态 ========== */
.navbar.scrolled {
  box-shadow: var(--shadow-md);
}