/* ============================================================
   宁夏夏之星科技有限公司 - 官网样式表
   ============================================================ */

/* ==================== CSS 变量 ==================== */
:root {
  /* 主题色 */
  --primary: #00d4ff;
  --primary-dark: #00a8cc;
  --secondary: #7b2ffc;
  --accent: #ff6b6b;

  /* 渐变 */
  --gradient: linear-gradient(135deg, #00d4ff 0%, #7b2ffc 100%);
  --gradient-reverse: linear-gradient(135deg, #7b2ffc 0%, #00d4ff 100%);
  --gradient-subtle: linear-gradient(135deg, rgba(0,212,255,0.1) 0%, rgba(123,47,252,0.1) 100%);

  /* 背景色 */
  --bg-primary: #0a0e27;
  --bg-secondary: #0f1538;
  --bg-card: rgba(15, 21, 56, 0.8);
  --bg-card-hover: rgba(20, 28, 70, 0.9);

  /* 文字色 */
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.7);
  --text-muted: rgba(255, 255, 255, 0.45);

  /* 边框 */
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(0, 212, 255, 0.3);

  /* 间距 */
  --section-padding: 120px;
  --container-width: 1200px;

  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  /* 动画 */
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);

  /* 阴影 */
  --shadow-card: 0 4px 30px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.15);
}

/* ==================== 全局重置 ==================== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

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

ul {
  list-style: none;
}

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

/* ==================== 粒子画布 ==================== */
#particle-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* ==================== 容器 ==================== */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ==================== 通用区域样式 ==================== */
.section {
  position: relative;
  z-index: 1;
  padding: var(--section-padding) 0;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-tag {
  display: inline-block;
  padding: 6px 20px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 3px;
  text-transform: uppercase;
  border: 1px solid var(--border-hover);
  border-radius: 50px;
  color: var(--primary);
  margin-bottom: 20px;
  background: rgba(0, 212, 255, 0.05);
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 900;
  margin-bottom: 16px;
  line-height: 1.2;
}

.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ==================== 按钮 ==================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-family: inherit;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 212, 255, 0.4);
}

.btn-primary i {
  transition: transform var(--transition);
}

.btn-primary:hover i {
  transform: translateX(4px);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-hover);
}

.btn-outline:hover {
  background: rgba(0, 212, 255, 0.1);
  border-color: var(--primary);
  transform: translateY(-2px);
}

.btn-full {
  width: 100%;
  justify-content: center;
}

/* ==================== 导航栏 ==================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 20px 0;
  transition: var(--transition);
}

.navbar.scrolled {
  padding: 12px 0;
  background: rgba(10, 14, 39, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 1001;
}

.nav-logo .logo-icon,
.footer-logo .logo-icon {
  flex-shrink: 0;
}

.logo-text {
  font-size: 18px;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  padding: 8px 18px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
  background: rgba(0, 212, 255, 0.08);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

/* 汉堡菜单 */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

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

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

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

/* ==================== 首屏英雄区域 ==================== */
.hero {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 80px;
}

.hero-content {
  text-align: center;
  max-width: 900px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 24px;
  background: var(--gradient-subtle);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: 50px;
  font-size: 14px;
  color: var(--primary);
  margin-bottom: 32px;
}

.hero-title {
  margin-bottom: 24px;
}

.hero-title .line {
  display: block;
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.15;
}

.hero-title .line:first-child {
  margin-bottom: 8px;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto 40px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 64px;
  flex-wrap: wrap;
}

/* 数据统计 */
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
  padding-top: 48px;
  border-top: 1px solid var(--border);
}

.stat-item {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 2.5rem;
  font-weight: 900;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.stat-suffix {
  font-size: 1.2rem;
  color: var(--primary);
  font-weight: 700;
}

.stat-label {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* 滚动指示器 */
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 12px;
  animation: float 2s ease-in-out infinite;
}

.mouse {
  width: 24px;
  height: 38px;
  border: 2px solid var(--text-muted);
  border-radius: 12px;
  position: relative;
}

.wheel {
  width: 4px;
  height: 8px;
  background: var(--primary);
  border-radius: 2px;
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  animation: scroll-wheel 2s ease-in-out infinite;
}

@keyframes scroll-wheel {
  0% { opacity: 1; top: 6px; }
  100% { opacity: 0; top: 20px; }
}

@keyframes float {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(10px); }
}

/* ==================== 关于我们 ==================== */
.about {
  background: var(--bg-secondary);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.about-text h3 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.8;
}

.about-features {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.about-feature {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.about-feature i {
  font-size: 24px;
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.about-feature strong {
  display: block;
  font-size: 15px;
  margin-bottom: 2px;
}

.about-feature span {
  font-size: 13px;
  color: var(--text-muted);
}

/* 技能卡片 */
.skill-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: var(--transition);
}

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

.skill-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-subtle);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
}

.skill-icon i {
  font-size: 20px;
  color: var(--primary);
}

.skill-card h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 12px;
}

.skill-bar {
  height: 4px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  overflow: hidden;
}

.skill-fill {
  height: 100%;
  background: var(--gradient);
  border-radius: 4px;
  width: 0;
  transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==================== 服务项目 ==================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient);
  transform: scaleX(0);
  transition: transform var(--transition);
}

.service-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-8px);
  box-shadow: var(--shadow-card);
  background: var(--bg-card-hover);
}

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

.service-icon-wrap {
  margin-bottom: 24px;
}

.service-icon {
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-subtle);
  border: 1px solid rgba(0, 212, 255, 0.15);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.service-icon i {
  font-size: 26px;
  color: var(--primary);
}

.service-card:hover .service-icon {
  background: var(--gradient);
  border-color: transparent;
}

.service-card:hover .service-icon i {
  color: #fff;
}

.service-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.service-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.service-tags li {
  padding: 4px 12px;
  font-size: 12px;
  background: rgba(0, 212, 255, 0.06);
  border: 1px solid rgba(0, 212, 255, 0.12);
  border-radius: 50px;
  color: var(--primary);
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
}

.service-link:hover {
  gap: 12px;
}

/* ==================== 解决方案 ==================== */
.solutions {
  background: var(--bg-secondary);
}

.solutions-showcase {
  max-width: 960px;
  margin: 0 auto;
}

.solution-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.solution-tab {
  padding: 12px 28px;
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
}

.solution-tab:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
}

.solution-tab.active {
  background: var(--gradient);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

.solution-panel {
  display: none;
  animation: fadeIn 0.5s ease;
}

.solution-panel.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.solution-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.solution-info h3 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.solution-info p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 24px;
}

.solution-features {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 32px;
}

.solution-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
}

.solution-features i {
  color: var(--primary);
  font-size: 14px;
}

/* 方案图示 */
.solution-diagram {
  position: relative;
  width: 300px;
  height: 300px;
  margin: 0 auto;
}

.diagram-node {
  position: absolute;
  padding: 12px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  text-align: center;
  transition: var(--transition);
  white-space: nowrap;
}

.diagram-node:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow);
}

.center-node {
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--gradient);
  border: none;
  color: #fff;
  font-weight: 700;
  z-index: 2;
  padding: 16px 20px;
}

.diagram-node.top {
  top: 0;
  left: 50%;
  transform: translateX(-50%);
}

.diagram-node.right {
  top: 50%;
  right: 0;
  transform: translateY(-50%);
}

.diagram-node.bottom {
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
}

.diagram-node.left {
  top: 50%;
  left: 0;
  transform: translateY(-50%);
}

/* ==================== 团队风采 ==================== */
.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.team-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 24px;
  text-align: center;
  transition: var(--transition);
}

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

.team-avatar {
  position: relative;
  width: 100px;
  height: 100px;
  margin: 0 auto 20px;
}

.avatar-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-subtle);
  border: 2px solid var(--border-hover);
  border-radius: 50%;
  font-size: 36px;
  color: var(--primary);
}

.team-social {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  gap: 8px;
  opacity: 0;
  transition: var(--transition);
}

.team-card:hover .team-social {
  opacity: 1;
}

.team-card:hover .avatar-placeholder {
  opacity: 0.3;
}

.team-social a {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient);
  border-radius: 50%;
  color: #fff;
  font-size: 14px;
}

.team-social a:hover {
  transform: scale(1.1);
}

.team-card h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.team-role {
  display: block;
  font-size: 13px;
  color: var(--primary);
  margin-bottom: 12px;
}

.team-card p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ==================== 联系我们 ==================== */
.contact {
  background: var(--bg-secondary);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-subtle);
  border: 1px solid rgba(0, 212, 255, 0.15);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.contact-icon i {
  font-size: 20px;
  color: var(--primary);
}

.contact-item h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
}

.contact-item p {
  font-size: 14px;
  color: var(--text-secondary);
}

.contact-map {
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-top: 8px;
}

#amap-container {
  height: 220px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

/* 联系表单 */
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

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

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 8px;
}

.required {
  color: var(--accent);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  font-size: 14px;
  font-family: inherit;
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  outline: none;
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
  background: rgba(255, 255, 255, 0.06);
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2300d4ff' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.form-group select option {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

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

/* ==================== 页脚 ==================== */
.footer {
  position: relative;
  z-index: 1;
  padding: 64px 0 0;
  border-top: 1px solid var(--border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  font-size: 16px;
  font-weight: 700;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

.footer-links h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 20px;
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links li {
  font-size: 14px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-links li i {
  color: var(--primary);
  font-size: 13px;
  width: 16px;
}

.footer-links a {
  color: var(--text-muted);
}

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

.footer-bottom {
  padding: 24px 0;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
}

.footer-bottom a {
  color: var(--text-muted);
}

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

/* ==================== 返回顶部 ==================== */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient);
  border: none;
  border-radius: 50%;
  color: #fff;
  font-size: 18px;
  cursor: pointer;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 212, 255, 0.4);
}

/* ==================== 动画相关 ==================== */
[data-animate] {
  opacity: 0;
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate="fade-up"] {
  transform: translateY(40px);
}

[data-animate="fade-down"] {
  transform: translateY(-40px);
}

[data-animate="fade-right"] {
  transform: translateX(-40px);
}

[data-animate="fade-left"] {
  transform: translateX(40px);
}

[data-animate].animated {
  opacity: 1;
  transform: translate(0, 0);
}

/* ==================== 响应式布局 ==================== */

/* 大屏平板 */
@media (max-width: 1024px) {
  :root {
    --section-padding: 80px;
  }

  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .solution-content {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

/* 平板 */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: rgba(10, 14, 39, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 100px 32px 32px;
    gap: 4px;
    transition: var(--transition-slow);
    border-left: 1px solid var(--border);
  }

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

  .nav-link {
    padding: 12px 16px;
    font-size: 15px;
    width: 100%;
  }

  .hero-stats {
    gap: 24px;
  }

  .stat-item {
    min-width: 100px;
  }

  .stat-number {
    font-size: 2rem;
  }

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

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .solution-tabs {
    gap: 6px;
  }

  .solution-tab {
    padding: 10px 18px;
    font-size: 13px;
  }

  .team-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

/* 手机 */
@media (max-width: 480px) {
  :root {
    --section-padding: 64px;
  }

  .section-title {
    font-size: 1.8rem;
  }

  .hero-title .line {
    font-size: 2rem;
  }

  .hero-stats {
    gap: 20px;
  }

  .stat-number {
    font-size: 1.6rem;
  }

  .skill-cards {
    grid-template-columns: 1fr;
  }

  .team-grid {
    grid-template-columns: 1fr;
  }

  .btn {
    padding: 12px 24px;
    font-size: 14px;
  }

  .contact-form {
    padding: 24px;
  }

  .scroll-indicator {
    display: none;
  }
}

/* ==================== 滚动条美化 ==================== */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: rgba(0, 212, 255, 0.2);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 212, 255, 0.4);
}

/* ==================== 选区样式 ==================== */
::selection {
  background: rgba(0, 212, 255, 0.3);
  color: #fff;
}