body {
  margin: 0;
  font-family: 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', Arial, sans-serif;
  background: #f8f9fb;
  color: #444;
  scroll-behavior: smooth;
}

h1, h2, h3, h4, h5, h6 {
  color: #2a5cff;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.home-content h1,
.product-content h2,
.security-content h2,
.contact-center-card h2,
.contact-card-left h2 {
  color: #2a5cff;
}

.home-subtitle, .product-intro, .contact-desc, .feature-desc, .security-card ol, .contact-bar-container {
  color: #666;
}

a, .nav-links a {
  color: #2a5cff;
  text-decoration: none;
  transition: color 0.2s;
}

a:hover, .nav-links a:hover {
  color: #1746b7;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 8vw;
  background: rgba(255,255,255,0.97);
  box-shadow: 0 2px 12px rgba(0,0,0,0.07);
  position: sticky;
  top: 0;
  z-index: 999;
}
.logo {
  font-size: 2rem;
  font-weight: bold;
  color: #2a5cff;
  text-decoration: none;
}
.nav-links {
  list-style: none;
  display: flex;
  gap: 2rem;
  margin: 0;
  padding: 0;
}
.nav-links a {
  color: #2a5cff;
  text-decoration: none;
  font-size: 1.1rem;
  transition: color 0.2s;
}
.nav-links a:hover {
  color: #1746b7;
}
.screen {
  min-height: 100vh;
  padding: 40px 8vw 60px 8vw;
  display: flex;
  flex-direction: column;
  justify-content: center;
  scroll-margin-top: 90px;
}
.home-screen {
  position: relative;
  background: #f8f9fb;
  align-items: center;
  text-align: center;
  padding-bottom: 0;
  min-height: 100vh;
  padding-top: 0;
}
.home-content {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin-top: -80px;
  opacity: 0;
  transform: translateY(30px);
}
.home-content.animate {
  animation: fadeInUp 0.8s ease-out forwards;
}
.home-content h1 {
  font-size: 3rem;
  color: #2a5cff;
  margin-bottom: 1.5rem;
  opacity: 0;
  transform: translateY(20px);
}
.home-content.animate h1 {
  animation: fadeInUp 0.8s ease-out forwards;
  animation-delay: 0.2s;
}
.home-content p {
  font-size: 1.3rem;
  color: #444;
  margin-bottom: 2.5rem;
  opacity: 0;
  transform: translateY(20px);
}
.home-content.animate p {
  animation: fadeInUp 0.8s ease-out forwards;
  animation-delay: 0.6s;
}
.home-subtitle {
  font-size: 1.5rem;
  color: #4a6cff;
  margin: 1.2rem 0 1.2rem 0;
  font-weight: 500;
  letter-spacing: 1px;
  opacity: 0;
  transform: translateY(20px);
}
.home-content.animate .home-subtitle {
  animation: fadeInUp 0.8s ease-out forwards;
  animation-delay: 0.4s;
}
.home-btn {
  display: inline-block;
  margin-top: 2rem;
  padding: 0.9rem 2.2rem;
  background: #2a5cff;
  color: #fff;
  border-radius: 32px;
  font-size: 1.15rem;
  font-weight: 600;
  text-decoration: none;
  box-shadow: 0 2px 12px rgba(42,92,255,0.10);
  transition: background 0.2s, box-shadow 0.2s;
  opacity: 0;
  transform: translateY(20px);
}
.home-content.animate .home-btn {
  animation: fadeInUp 0.8s ease-out forwards;
  animation-delay: 0.8s;
}
.home-btn:hover {
  background: #1746b7;
  box-shadow: 0 4px 18px rgba(42,92,255,0.18);
}
.home-wave {
  width: 100vw;
  min-width: 100%;
  margin-left: 50%;
  transform: translateX(-50%);
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 1;
  pointer-events: none;
}
.about-screen {
  background: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 0;
}
.about-container {
  display: flex;
  flex-wrap: wrap;
  gap: 3vw;
  width: 100%;
  max-width: 1200px;
  margin-bottom: 2rem;
}
.about-row {
  display: flex;
  gap: 3.5rem;
  max-width: 1100px;
  margin: -80px auto 2rem auto;
  align-items: stretch;
  justify-content: center;
  width: 100%;
  flex-wrap: wrap;
}
.about-left-panel {
  flex: 1 1 340px;
  min-width: 260px;
  max-width: 400px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  position: relative;
  padding: 2.2rem 1.2rem 2rem 1.2rem;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 2px 16px rgba(42,92,255,0.07);
  opacity: 0;
  transform: translateX(-50px);
}
.about-left-panel.animate {
  animation: slideInLeft 0.8s ease-out forwards;
}
.about-logo-title {
  font-size: 2.1rem;
  font-weight: bold;
  color: #2a5cff;
  margin-bottom: 1.2rem;
  letter-spacing: 2px;
}
.about-main-desc {
  color: #555;
  font-size: 1.08rem;
  margin-bottom: 2.2rem;
  line-height: 1.8;
}
.about-visual-bg {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: linear-gradient(135deg, #e3eafe 0%, #f8f9fb 100%);
  position: absolute;
  right: -40px;
  bottom: -40px;
  z-index: 0;
  opacity: 0.7;
}
.about-features-panel {
  flex: 2 1 480px;
  min-width: 320px;
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 2rem;
  align-items: stretch;
  justify-content: flex-start;
  opacity: 0;
  transform: translateX(50px);
}
.about-features-panel.animate {
  animation: slideInRight 0.8s ease-out forwards;
}
.about-feature-card {
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 2px 12px rgba(42,92,255,0.06);
  padding: 1.3rem 1.1rem 1.1rem 1.1rem;
  width: 220px;
  min-width: 160px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
  gap: 0.5rem;
  transition: box-shadow 0.18s, transform 0.18s;
  opacity: 0;
  transform: translateX(50px);
}
.about-feature-card.animate {
  animation: slideInRight 0.8s ease-out forwards;
  animation-delay: calc(var(--card-index, 0) * 0.1s);
}
.about-feature-card:hover {
  box-shadow: 0 6px 24px rgba(42,92,255,0.13);
  transform: translateY(-4px) scale(1.03);
}
.about-feature-icon {
  margin-bottom: 0.3rem;
}
.about-feature-title {
  font-size: 1.08rem;
  color: #2a5cff;
  font-weight: 600;
  margin-bottom: 0.2rem;
}
.about-feature-desc {
  color: #666;
  font-size: 0.97rem;
}
@media (max-width: 900px) {
  .about-row {
    flex-direction: column;
    gap: 2rem;
    align-items: stretch;
    padding: 0 2vw;
  }
  .about-left-panel, .about-features-panel {
    min-width: 0;
    width: 100%;
    max-width: 98vw;
    padding: 1.2rem 0.5rem 1rem 0.5rem;
  }
  .about-visual-bg {
    display: none;
  }
  .about-feature-card {
    width: 100%;
    min-width: 0;
    max-width: 98vw;
  }
}
.product-screen {
  background: #f8f9fb;
  padding-top: 0;
}
.product-content {
  max-width: 1200px;
  margin: -80px auto 0 auto;
  padding: 0 20px;
  text-align: center;
  opacity: 0;
  transform: scale(0.95);
}
.product-content.animate {
  animation: scaleIn 0.8s ease-out forwards;
}
.product-content h2 {
  color: #2a5cff;
  font-size: 2rem;
  margin-bottom: 1.5rem;
}
.product-content ul {
  text-align: left;
  margin: 0 auto 2rem auto;
  max-width: 600px;
  color: #444;
  font-size: 1.1rem;
  line-height: 2;
}
.security-screen {
  background: #fff;
  align-items: center;
}
.security-content {
  max-width: 1100px;
  margin: 0 auto;
}
.security-content h2 {
  color: #2a5cff;
  font-size: 2rem;
  margin-bottom: 2rem;
  text-align: center;
}
.security-row {
  display: flex;
  gap: 3.5rem;
  max-width: 1100px;
  margin: 0 auto 2rem auto;
  align-items: flex-start;
  justify-content: center;
  width: 100%;
  flex-wrap: wrap;
}
.security-card {
  flex: 1 1 420px;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 2px 16px rgba(42,92,255,0.08);
  min-width: 320px;
  max-width: 520px;
  padding: 2.2rem 2rem 1.5rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  margin: 0 0.5rem;
  transition: box-shadow 0.22s, transform 0.22s;
  opacity: 0;
  transform: translateY(30px);
}
.security-card.animate {
  animation: slideInUp 0.8s ease-out forwards;
  animation-delay: calc(var(--card-index, 0) * 0.15s);
}
.security-card:hover {
  box-shadow: 0 10px 32px rgba(42,92,255,0.16);
  transform: translateY(-8px) scale(1.03);
  z-index: 2;
}
.security-card h3 {
  color: #2a5cff;
  font-size: 1.18rem;
  margin-bottom: 0.5rem;
  margin-top: 0.5rem;
}
.security-card ol {
  color: #444;
  font-size: 1.02rem;
  line-height: 2;
  margin: 0 0 0 1.2rem;
  padding: 0;
}
.contact-screen {
  background: #f8f9fb;
  align-items: center;
}
.contact-content {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}
.contact-content h2 {
  color: #2a5cff;
  font-size: 2rem;
  margin-bottom: 1.2rem;
}
.contact-content ul {
  color: #444;
  font-size: 1.1rem;
  line-height: 2;
  margin: 0 auto 2rem auto;
  text-align: left;
  max-width: 400px;
}
.footer {
  text-align: center;
  color: #888;
  font-size: 1rem;
  padding: 2rem 0 1rem 0;
  background: none;
}
.contact-row {
  display: flex;
  gap: 3vw;
  max-width: 900px;
  margin: 0 auto 2rem auto;
  align-items: flex-start;
  justify-content: center;
  width: 100%;
  flex-wrap: wrap;
  background: none;
  padding: 60px 0 0 0;
}
.contact-card-left, .contact-card-right {
  flex: 1 1 320px;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 2px 16px rgba(42,92,255,0.08);
  min-width: 260px;
  padding: 2.5rem 2rem 2rem 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.contact-card-left {
  max-width: 420px;
  text-align: left;
  align-items: flex-start;
}
.contact-card-left h2 {
  color: #2a5cff;
  font-size: 2rem;
  margin-bottom: 0.7rem;
}
.contact-card-left .contact-desc {
  color: #444;
  font-size: 1.1rem;
  margin-bottom: 1.2rem;
}
.contact-card-left ul {
  color: #333;
  font-size: 1.05rem;
  line-height: 2;
  margin-bottom: 1.2rem;
  padding-left: 0;
  list-style: none;
}
.contact-card-left ul li {
  margin-bottom: 0.3rem;
}
.contact-card-left .contact-socials {
  margin-top: 1.2rem;
  font-size: 1.05rem;
  color: #888;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  justify-content: flex-start;
}
.contact-card-left .social-icon {
  font-size: 1.5rem;
  text-decoration: none;
  margin-left: 0.2rem;
  transition: transform 0.15s;
}
.contact-card-left .social-icon:hover {
  transform: scale(1.18) rotate(-8deg);
}
.contact-card-right {
  max-width: 340px;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2.5rem 1.2rem 2rem 1.2rem;
}
.map-placeholder {
  width: 100%;
  max-width: 320px;
  margin: 0 auto;
  border-radius: 16px;
  overflow: hidden;
  background: #e3eafe;
  display: flex;
  align-items: center;
  justify-content: center;
}
@media (max-width: 900px) {
  .contact-row {
    flex-direction: column;
    gap: 1.5rem;
    align-items: stretch;
    padding: 40px 0 0 0;
  }
  .contact-card-left, .contact-card-right {
    min-width: 0;
    width: 100%;
    max-width: 98vw;
    padding: 1.2rem 0.5rem 1rem 0.5rem;
  }
  .map-placeholder {
    max-width: 100%;
  }
}
/* 移除旧的contact-center-card样式 */
.contact-center-card { display: none !important; }

.contact-section {
  background: #f8f9fb;
  padding: 60px 0 0 0;
  min-height: unset;
  display: block;
}

.contact-bar-section {
  background: #f8f9fb;
  padding: 40px 0 40px 0;
}
.contact-bar-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: flex-start;
  color: #222;
  font-size: 0.98rem;
  gap: 5vw;
}
.contact-bar-left, .contact-bar-right {
  flex: 3 1 0;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}


@media (max-width: 900px) {
  .contact-bar-container {
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    font-size: 0.95rem;
    padding: 0 2vw;
  }
  .contact-bar-left, .contact-bar-right {
    align-items: center;
    text-align: center;
    gap: 0.5rem;
    max-width: 98vw;
  }
}

.product-intro {
  color: #444;
  font-size: 1.08rem;
  margin: 0 auto 2.2rem auto;
  max-width: 700px;
  text-align: center;
}
.product-features {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem 2.5rem;
  justify-content: center;
  margin: 0 auto;
  max-width: 900px;
}
.product-feature-card {
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 2px 12px rgba(42,92,255,0.06);
  padding: 1.5rem 1.2rem 1.2rem 1.2rem;
  width: 220px;
  min-width: 180px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: box-shadow 0.18s, transform 0.18s;
  opacity: 0;
  transform: translateY(30px);
}
.product-feature-card.animate {
  animation: fadeInUp 0.8s ease-out forwards;
  animation-delay: calc(var(--card-index, 0) * 0.1s);
}
.product-feature-card:hover {
  box-shadow: 0 6px 24px rgba(42,92,255,0.13);
  transform: translateY(-4px) scale(1.03);
}
.feature-icon {
  font-size: 2.2rem;
  margin-bottom: 0.7rem;
}
.feature-title {
  font-size: 1.13rem;
  color: #2a5cff;
  font-weight: 600;
  margin-bottom: 0.4rem;
}
.feature-desc {
  color: #555;
  font-size: 0.98rem;
}
@media (max-width: 900px) {
  .product-features {
    gap: 1.2rem 1rem;
  }
  .product-feature-card {
    width: 46vw;
    min-width: 120px;
    padding: 1.1rem 0.5rem 1rem 0.5rem;
  }
}
@media (max-width: 600px) {
  .product-features {
    flex-direction: column;
    align-items: center;
    gap: 0.8rem;
  }
  .product-feature-card {
    width: 98vw;
    max-width: 340px;
  }
}

.section-wave {

}
.section-wave svg {
  display: block;
  width: 100%;

}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(50px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Home Screen Animations */
.home-content h1 {
  opacity: 0;
  transform: translateY(20px);
}

.home-content.animate h1 {
  animation: fadeInUp 0.8s ease-out forwards;
  animation-delay: 0.2s;
}

.home-content .home-subtitle {
  opacity: 0;
  transform: translateY(20px);
}

.home-content.animate .home-subtitle {
  animation: fadeInUp 0.8s ease-out forwards;
  animation-delay: 0.4s;
}

.home-content p {
  opacity: 0;
  transform: translateY(20px);
}

.home-content.animate p {
  animation: fadeInUp 0.8s ease-out forwards;
  animation-delay: 0.6s;
}

.home-content .home-btn {
  opacity: 0;
  transform: translateY(20px);
}

.home-content.animate .home-btn {
  animation: fadeInUp 0.8s ease-out forwards;
  animation-delay: 0.8s;
}

/* About Screen Animations */
.about-left-panel {
  opacity: 0;
  transform: translateX(-50px);
}

.about-left-panel.animate {
  animation: slideInLeft 0.8s ease-out forwards;
}

.about-features-panel {
  opacity: 0;
  transform: translateX(50px);
}

.about-features-panel.animate {
  animation: slideInRight 0.8s ease-out forwards;
}

.about-feature-card {
  opacity: 0;
  transform: translateX(50px);
}

.about-feature-card.animate {
  animation: slideInRight 0.8s ease-out forwards;
  animation-delay: calc(var(--card-index, 0) * 0.1s);
}

/* Product Screen Animations */
.product-feature-card {
  opacity: 0;
  transform: translateY(30px);
}

.product-feature-card.animate {
  animation: fadeInUp 0.8s ease-out forwards;
  animation-delay: calc(var(--card-index, 0) * 0.1s);
}

/* Security Screen Animations */
.security-card {
  opacity: 0;
  transform: translateY(30px);
}

.security-card.animate {
  animation: slideInUp 0.8s ease-out forwards;
  animation-delay: calc(var(--card-index, 0) * 0.15s);
}

/* 现代风格弹窗 */
.alert-modal {
  background: #232f3e;
  color: #fff;
  border-radius: 18px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.18);
  padding: 32px 36px 28px 36px;
  max-width: 420px;
  margin: 60px auto 0 auto;
  text-align: center;
  font-family: 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', Arial, sans-serif;
  position: relative;
  z-index: 1000;
}
.alert-modal-title {
  font-size: 1.6rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}
.alert-modal-desc {
  font-size: 1.08rem;
  color: #cfd8dc;
  margin-bottom: 32px;
  line-height: 1.7;
}
.alert-modal-btns {
  display: flex;
  justify-content: center;
  gap: 32px;
}
.alert-modal-btn {
  min-width: 110px;
  padding: 0.7em 1.5em;
  border-radius: 24px;
  font-size: 1.08rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: background 0.18s, color 0.18s, box-shadow 0.18s;
  box-shadow: 0 2px 8px rgba(42,92,255,0.10);
}
.alert-modal-btn.confirm {
  background: #2196f3;
  color: #fff;
}
.alert-modal-btn.confirm:hover {
  background: #1769aa;
}
.alert-modal-btn.deny {
  background: #fff;
  color: #e53935;
  border: 1.5px solid #e53935;
}
.alert-modal-btn.deny:hover {
  background: #e53935;
  color: #fff;
}