/* ============================================
   闪电狗AI快聘 - 官网样式
   品牌色：闪电黄 #FFB800 + 纯黑 #1a1a1a
   ============================================ */

/* --- CSS 变量 --- */
:root {
  --primary: #FFB800;
  --primary-dark: #E5A600;
  --primary-light: #FFF8E6;
  --dark: #1a1a1a;
  --dark-2: #111111;
  --gray-900: #111827;
  --gray-800: #1f2937;
  --gray-700: #374151;
  --gray-600: #4b5563;
  --gray-500: #6b7280;
  --gray-400: #9ca3af;
  --gray-300: #d1d5db;
  --gray-200: #e5e7eb;
  --gray-100: #f3f4f6;
  --gray-50: #f9fafb;
  --white: #ffffff;
  --gradient-1: linear-gradient(135deg, #FFB800 0%, #FF8C00 100%);
  --gradient-2: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 50%, #1a1a1a 100%);
  --gradient-3: linear-gradient(135deg, #FFB800 0%, #FFD700 100%);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- 重置与基础 --- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC',
    'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial,
    sans-serif;
  color: var(--gray-800);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
  list-style: none;
}

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

/* --- 导航栏 --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0 40px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow-sm);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--dark);
}

.nav-logo .logo-img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  object-fit: cover;
}

.nav-logo .logo-icon {
  width: 36px;
  height: 36px;
  background: var(--primary);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--dark);
  font-weight: 800;
  font-size: 1.1rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--gray-600);
  position: relative;
  padding: 4px 0;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--dark);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 1px;
  transition: var(--transition);
}

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

.nav-cta {
  padding: 10px 24px !important;
  background: var(--gradient-1) !important;
  color: var(--dark) !important;
  border-radius: 8px;
  font-weight: 700 !important;
  font-size: 0.9rem !important;
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(255, 184, 0, 0.4);
}

/* 移动端菜单按钮 */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--gray-800);
  border-radius: 2px;
  transition: var(--transition);
}

/* --- Hero 区域 --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 72px;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: var(--dark);
  z-index: -2;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(255, 184, 0, 0.12) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 140, 0, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 60% 80%, rgba(255, 184, 0, 0.06) 0%, transparent 50%);
}

.hero .container {
  display: flex;
  align-items: center;
  gap: 60px;
}

.hero-content {
  flex: 1;
  color: var(--white);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(255, 184, 0, 0.12);
  border: 1px solid rgba(255, 184, 0, 0.25);
  border-radius: 100px;
  font-size: 0.85rem;
  color: var(--primary);
  margin-bottom: 28px;
  backdrop-filter: blur(10px);
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero h1 {
  font-size: 3.8rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, #FFB800, #FFD700);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.2rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.7);
  max-width: 520px;
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-visual {
  flex: 1;
  display: flex;
  justify-content: center;
}

.hero-card {
  width: 420px;
  background: rgba(255, 184, 0, 0.06);
  border: 1px solid rgba(255, 184, 0, 0.15);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(20px);
  padding: 28px 32px;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.hero-card::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 184, 0, 0.06) 0%, transparent 60%);
}

.hero-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
}

.hero-card-icon {
  width: 48px;
  height: 48px;
  background: var(--gradient-1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}

.hero-card-title {
  color: var(--white);
  font-size: 1.1rem;
  font-weight: 600;
}

.hero-card-subtitle {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.85rem;
}

.hero-card-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

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

.stat-number {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--primary);
  display: block;
}

.stat-label {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 0.05em;
}

/* --- 按钮 --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-align: center;
}

.btn-primary {
  background: var(--gradient-1);
  color: var(--dark);
  box-shadow: 0 4px 14px rgba(255, 184, 0, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 184, 0, 0.5);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1.5px solid rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.5);
}

.btn-outline-dark {
  background: transparent;
  color: var(--gray-700);
  border: 1.5px solid var(--gray-300);
}

.btn-outline-dark:hover {
  border-color: var(--primary);
  color: var(--primary-dark);
}

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

.btn-dark:hover {
  background: var(--dark-2);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* --- 通用区块 --- */
.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 64px;
}

.section-label {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary-dark);
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}

.section-title {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--gray-900);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--gray-500);
  line-height: 1.7;
}

/* --- 特色卡片区域 --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  padding: 40px 32px;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-1);
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}

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

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 24px;
}

.feature-icon.yellow {
  background: #FFF8E6;
  color: #FFB800;
}

.feature-icon.blue {
  background: #e6f0ff;
  color: #0066ff;
}

.feature-icon.purple {
  background: #f0e6ff;
  color: #7c3aed;
}

.feature-icon.green {
  background: #e6fff0;
  color: #10b981;
}

.feature-icon.orange {
  background: #fff3e6;
  color: #f59e0b;
}

.feature-icon.red {
  background: #ffe6e6;
  color: #ef4444;
}

.feature-icon.teal {
  background: #e6fffe;
  color: #14b8a6;
}

.feature-icon.dark {
  background: #1a1a1a;
  color: #FFB800;
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 12px;
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--gray-500);
  line-height: 1.7;
}

/* --- 数据统计区域 --- */
.stats-section {
  background: var(--gray-50);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.stats-card {
  text-align: center;
  padding: 40px 20px;
}

.stats-card .number {
  font-size: 3rem;
  font-weight: 800;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
  display: block;
}

.stats-card .label {
  font-size: 1rem;
  color: var(--gray-500);
  font-weight: 500;
}

/* --- CTA 区域 --- */
.cta-section {
  background: var(--dark);
  text-align: center;
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 50%, rgba(255, 184, 0, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 70% 50%, rgba(255, 140, 0, 0.05) 0%, transparent 50%);
}

.cta-section .container {
  position: relative;
  z-index: 1;
}

.cta-section h2 {
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 20px;
}

.cta-section p {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.55);
  max-width: 560px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* --- 页脚 --- */
.footer {
  background: var(--gray-900);
  color: var(--gray-400);
  padding: 80px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 60px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand p {
  margin-top: 16px;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--gray-500);
  max-width: 320px;
}

.footer-brand .logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--white);
}

.footer-brand .logo .logo-img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  object-fit: cover;
}

.footer-brand .logo .logo-icon {
  width: 32px;
  height: 32px;
  background: var(--primary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--dark);
  font-weight: 800;
  font-size: 0.95rem;
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 20px;
}

.footer-col ul li {
  margin-bottom: 12px;
}

.footer-col ul li a {
  font-size: 0.9rem;
  color: var(--gray-500);
}

.footer-col ul li a:hover {
  color: var(--primary);
}

.footer-bottom {
  padding: 28px 0;
  text-align: center;
  font-size: 0.85rem;
  color: var(--gray-600);
}

/* --- 内页 Hero --- */
.page-hero {
  padding: 160px 0 80px;
  background: var(--dark);
  text-align: center;
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.page-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 50%, rgba(255, 184, 0, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 70% 30%, rgba(255, 140, 0, 0.06) 0%, transparent 50%);
}

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

.page-hero h1 {
  font-size: 3.2rem;
  font-weight: 800;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.page-hero p {
  font-size: 1.2rem;
  color: rgba(255, 255, 255, 0.6);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* --- 关于我们页面 --- */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-text h2 {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 20px;
  line-height: 1.25;
}

.about-text p {
  font-size: 1.05rem;
  color: var(--gray-500);
  line-height: 1.8;
  margin-bottom: 16px;
}

.about-image {
  aspect-ratio: 4/3;
  background: var(--primary);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-image .about-logo-img {
  width: 65%;
  height: auto;
  object-fit: contain;
  position: relative;
  z-index: 1;
}

.about-image-content {
  text-align: center;
  color: var(--dark);
  padding: 40px;
}

.about-image-content .big-year {
  font-size: 5rem;
  font-weight: 800;
  opacity: 0.1;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--dark);
}

.about-image-content .icon-group {
  font-size: 4rem;
  margin-bottom: 16px;
}

.about-image-content p {
  font-size: 1.1rem;
  color: rgba(26, 26, 26, 0.6);
}

/* 时间线 */
.timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--gray-200);
  transform: translateX(-50%);
}

.timeline-item {
  display: flex;
  margin-bottom: 48px;
  position: relative;
}

.timeline-item:nth-child(odd) {
  flex-direction: row-reverse;
  text-align: right;
}

.timeline-item:nth-child(odd) .timeline-content {
  padding-right: 48px;
  padding-left: 0;
}

.timeline-item:nth-child(even) .timeline-content {
  padding-left: 48px;
}

.timeline-content {
  flex: 1;
}

.timeline-dot {
  position: absolute;
  left: 50%;
  top: 8px;
  width: 16px;
  height: 16px;
  background: var(--primary);
  border-radius: 50%;
  transform: translateX(-50%);
  border: 3px solid var(--white);
  box-shadow: 0 0 0 3px var(--primary-light);
  z-index: 1;
}

.timeline-year {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary-dark);
  margin-bottom: 4px;
}

.timeline-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 8px;
}

.timeline-desc {
  font-size: 0.95rem;
  color: var(--gray-500);
  line-height: 1.6;
}

/* 团队 */
.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.team-card {
  text-align: center;
  padding: 32px 20px;
  border-radius: var(--radius);
  border: 1px solid var(--gray-200);
  transition: var(--transition);
}

.team-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.team-avatar {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.2rem;
  font-weight: 700;
  color: white;
}

.team-card h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 4px;
}

.team-card .role {
  font-size: 0.85rem;
  color: var(--primary-dark);
  font-weight: 500;
  margin-bottom: 12px;
}

.team-card .bio {
  font-size: 0.85rem;
  color: var(--gray-500);
  line-height: 1.6;
}

/* --- 服务页面 --- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.service-card {
  padding: 48px 40px;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}

.service-card .service-number {
  font-size: 4rem;
  font-weight: 800;
  color: var(--gray-100);
  position: absolute;
  top: 20px;
  right: 30px;
}

.service-card .service-icon {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 24px;
}

.service-card h3 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 14px;
}

.service-card p {
  font-size: 0.95rem;
  color: var(--gray-500);
  line-height: 1.7;
  margin-bottom: 20px;
}

.service-features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.service-tag {
  padding: 6px 14px;
  background: var(--primary-light);
  border-radius: 100px;
  font-size: 0.8rem;
  color: var(--primary-dark);
  font-weight: 500;
}

/* 流程 */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.process-card {
  text-align: center;
  padding: 40px 24px;
  position: relative;
}

.process-card::after {
  content: '→';
  position: absolute;
  right: -12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5rem;
  color: var(--gray-300);
}

.process-card:last-child::after {
  display: none;
}

.process-step {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--gradient-1);
  color: var(--dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: 800;
  margin: 0 auto 20px;
}

.process-card h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 8px;
}

.process-card p {
  font-size: 0.85rem;
  color: var(--gray-500);
  line-height: 1.6;
}

/* --- 联系页面 --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
}

.contact-form {
  padding: 48px;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--gray-100);
}

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 14px 18px;
  border: 1.5px solid var(--gray-200);
  border-radius: 10px;
  font-size: 0.95rem;
  color: var(--gray-800);
  background: var(--gray-50);
  transition: var(--transition);
  font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(255, 184, 0, 0.15);
}

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

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

.contact-info {
  padding: 20px 0;
}

.contact-info h3 {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 16px;
}

.contact-info > p {
  font-size: 1.05rem;
  color: var(--gray-500);
  line-height: 1.7;
  margin-bottom: 40px;
}

.info-cards {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.info-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 24px;
  border-radius: var(--radius);
  background: var(--gray-50);
  border: 1px solid var(--gray-100);
  transition: var(--transition);
}

.info-card:hover {
  background: var(--white);
  box-shadow: var(--shadow-md);
}

.info-card-icon {
  width: 48px;
  height: 48px;
  min-width: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
}

.info-card h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: 4px;
}

.info-card p {
  font-size: 0.9rem;
  color: var(--gray-500);
  line-height: 1.5;
}

/* --- 动画 --- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* --- 响应式 --- */
@media (max-width: 1024px) {
  .hero h1 { font-size: 3rem; }
  .section-title { font-size: 2.2rem; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .process-card:nth-child(2)::after { display: none; }
}

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

  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
  }

  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-toggle { display: flex; }

  .hero .container {
    flex-direction: column;
    text-align: center;
    padding-top: 40px;
  }

  .hero h1 { font-size: 2.4rem; }
  .hero p { margin: 0 auto 32px; }
  .hero-actions { justify-content: center; }
  .hero-visual { display: none; }

  .section { padding: 64px 0; }
  .section-title { font-size: 1.8rem; }
  .section-header { margin-bottom: 40px; }

  .features-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .services-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr 1fr; }
  .team-grid { grid-template-columns: 1fr 1fr; }

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

  .footer-grid { grid-template-columns: 1fr; gap: 24px; }

  .page-hero { padding: 120px 0 60px; }
  .page-hero h1 { font-size: 2.2rem; }

  .timeline::before { left: 16px; }
  .timeline-item,
  .timeline-item:nth-child(odd) { flex-direction: row; text-align: left; }
  .timeline-item:nth-child(odd) .timeline-content { padding-right: 0; padding-left: 48px; }
  .timeline-dot { left: 16px; }

  .cta-section h2 { font-size: 2rem; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 2rem; }
  .hero-actions { flex-direction: column; align-items: center; }
  .btn { width: 100%; justify-content: center; }
  .stats-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr; }
  .process-card::after { display: none; }
  .form-row { grid-template-columns: 1fr; }
  .contact-form { padding: 24px; }
}