/* 全局样式 */
:root {
  --primary-color: #4f46e5;
  --primary-dark: #4338ca;
  --primary-light: #818cf8;
  --secondary-color: #10b981;
  --secondary-dark: #059669;
  --secondary-light: #34d399;
  --accent-color: #f59e0b;
  --text-dark: #1f2937;
  --text-light: #6b7280;
  --text-white: #ffffff;
  --bg-light: #f9fafb;
  --bg-white: #ffffff;
  --bg-dark: #111827;
  --border-color: #e5e7eb;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 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);
  --radius-sm: 0.25rem;
  --radius: 0.5rem;
  --radius-lg: 1rem;
  --transition: all 0.3s ease;
  --container-width: 1200px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--bg-light);
}

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

a:hover {
  color: var(--primary-dark);
}

ul {
  list-style: none;
}

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

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-size: 1rem;
}

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

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

.btn-secondary {
  background-color: var(--secondary-color);
  color: var(--text-white);
}

.btn-secondary:hover {
  background-color: var(--secondary-dark);
  color: var(--text-white);
}

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

.btn-outline:hover {
  background-color: var(--primary-color);
  color: var(--text-white);
}

.btn-accent {
  background-color: var(--accent-color);
  color: var(--text-white);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-accent:hover {
  background-color: #e08e00;
  color: var(--text-white);
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-dark);
}

.section-subtitle {
  font-size: 1.25rem;
  color: var(--text-light);
  max-width: 700px;
  margin: 0 auto;
}

/* 导航栏样式 */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: var(--bg-white);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  padding: 1rem 0;
  transition: var(--transition);
}

.header.scrolled {
  padding: 0.75rem 0;
  box-shadow: var(--shadow);
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
}

.logo a {
  display: flex;
  align-items: center;
  color: var(--text-dark);
  font-weight: 700;
  font-size: 1.5rem;
}

.logo img {
  height: 40px;
  margin-right: 0.75rem;
}

.logo span strong {
  color: var(--primary-color);
}

.nav-list {
  display: flex;
  align-items: center;
}

.nav-item {
  margin-left: 2rem;
}

.nav-item a {
  color: var(--text-dark);
  font-weight: 500;
  position: relative;
}

.nav-item a:hover,
.nav-item.active a {
  color: var(--primary-color);
}

.nav-item.active a::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--primary-color);
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
}

.mobile-toggle span {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--text-dark);
  margin: 2px 0;
  transition: var(--transition);
}

/* 页面标题样式 */
.page-title {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: var(--text-white);
  padding: 3rem 0;
  text-align: center;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.1);
}

.page-title h1 {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 1rem;
  position: relative;
  z-index: 2;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

.page-title p {
  font-size: 1.25rem;
  max-width: 700px;
  margin: 0 auto;
  opacity: 0.9;
  position: relative;
  z-index: 2;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.4);
}

.page-title-wave {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  line-height: 0;
  z-index: 0;
}

/* CTA区域样式 */
.cta {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: var(--text-white);
  padding: 5rem 0;
  text-align: center;
}

.cta-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.cta-description {
  font-size: 1.25rem;
  max-width: 700px;
  margin: 0 auto 2rem;
  opacity: 0.9;
}

.contact-info {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 1.25rem;
  color: var(--text-white);
}

.contact-item i {
  font-size: 1.5rem;
  color: rgba(255, 255, 255, 0.9);
}

.qrcode-container {
  margin-top: 1rem;
}

.qrcode-image {
  max-width: 200px;
  border-radius: var(--radius);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  background-color: white;
  padding: 10px;
}
  font-size: 1rem;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder,
.contact-form select::placeholder {
  color: rgba(255, 255, 255, 0.7);
}

.contact-form textarea {
  height: 150px;
  resize: none;
}

.contact-form button {
  grid-column: span 2;
  background-color: var(--text-white);
  color: var(--primary-color);
  font-weight: 600;
}

.contact-form button:hover {
  background-color: rgba(255, 255, 255, 0.9);
}

/* 页脚样式 */
.footer {
  background-color: var(--bg-dark);
  color: var(--text-white);
  padding: 5rem 0 2rem;
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  margin-bottom: 3rem;
}

.footer-logo {
  margin-bottom: 2rem;
}

.footer-logo img {
  height: 40px;
  margin-right: 0.75rem;
}

.footer-logo span {
  font-size: 1.5rem;
  font-weight: 700;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 3rem;
}

.footer-links-column h3 {
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
  color: var(--text-white);
}

.footer-links-column ul li {
  margin-bottom: 0.75rem;
}

.footer-links-column ul li a {
  color: rgba(255, 255, 255, 0.7);
  transition: var(--transition);
}

.footer-links-column ul li a:hover {
  color: var(--text-white);
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--text-white);
  transition: var(--transition);
}

.social-links a:hover {
  background-color: var(--primary-color);
  transform: translateY(-3px);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.875rem;
}

.footer-bottom-links {
  display: flex;
  gap: 1.5rem;
}

.footer-bottom-links a {
  color: rgba(255, 255, 255, 0.7);
}

.footer-bottom-links a:hover {
  color: var(--text-white);
}

/* 响应式设计 */
@media (max-width: 1024px) {
  .section-title {
    font-size: 2.25rem;
  }

  .page-title h1 {
    font-size: 2.5rem;
  }

  .cta-title {
    font-size: 2.25rem;
  }
}

@media (max-width: 768px) {
  .mobile-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 400px;
    height: 100vh;
    background-color: var(--bg-white);
    box-shadow: var(--shadow-lg);
    padding: 5rem 2rem;
    transition: var(--transition);
    z-index: 999;
  }

  .nav.active {
    right: 0;
  }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-item {
    margin: 1rem 0;
    width: 100%;
  }

  .nav-item a {
    display: block;
    padding: 0.5rem 0;
  }

  .section-title {
    font-size: 2rem;
  }

  .page-title h1 {
    font-size: 2.25rem;
  }

  .cta-title {
    font-size: 2rem;
  }

  .contact-info {
    padding: 0 1rem;
  }
  
  .contact-item {
    font-size: 1.1rem;
  }
  
  .contact-item i {
    font-size: 1.3rem;
  }
  
  .qrcode-image {
    max-width: 180px;
  }

  .footer-content {
    flex-direction: column;
  }

  .footer-links {
    flex-direction: column;
    gap: 2rem;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 1rem;
  }
}

@media (max-width: 480px) {
  .section-title {
    font-size: 1.75rem;
  }

  .section-subtitle {
    font-size: 1rem;
  }

  .page-title h1 {
    font-size: 2rem;
  }

  .page-title p {
    font-size: 1rem;
  }

  .cta-title {
    font-size: 1.75rem;
  }

  .cta-description {
    font-size: 1rem;
  }
}