.primary-cta-button {
  background: white;
  color: #1e3a8a;
  padding: 18px 40px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
  transition: all 0.3s ease;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
  position: relative;
  overflow: hidden;
}

.primary-cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

.secondary-cta-button {
  background: transparent;
  color: white;
  padding: 18px 40px;
  border: 2px solid white;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
  transition: all 0.3s ease;
}

.secondary-cta-button:hover {
  background: white;
  color: #1e3a8a;
  transform: translateY(-3px);
}

/* 全宽模块样式 */
.content-section {
  width: 100%;
  padding: 100px 0;
}

.content-section:nth-child(odd) {
  background: #f8f9fa;
}

.content-section:nth-child(even) {
  background: white;
}

.section-title {
  color: #2c3e50;
  font-size: 2.8rem;
  margin-bottom: 20px;
  text-align: center;
  font-weight: 700;
}

.section-subtitle {
  text-align: center;
  color: #666;
  font-size: 1.2rem;
  margin-bottom: 60px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* 商标特点模块 */
.features-section {
  background: white;
  padding: 100px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  margin-top: 60px;
}

.feature-card {
  background: white;
  padding: 40px 30px;
  border-radius: 20px;
  text-align: center;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  border: 2px solid transparent;
  transition: all 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
  border-color: #1e3a8a;
}

.feature-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 25px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
  border-radius: 15px;
  box-shadow: 0 4px 15px rgba(30, 58, 138, 0.3);
}

.feature-icon svg {
  width: 32px;
  height: 32px;
  fill: white;
}

.feature-card h3 {
  color: #2c3e50;
  font-size: 1.4rem;
  margin-bottom: 20px;
  font-weight: 600;
}

.feature-card p {
  color: #666;
  line-height: 1.6;
  margin-bottom: 20px;
}

.feature-highlights {
  list-style: none;
  text-align: left;
  padding: 0;
}

.feature-highlights li {
  padding: 8px 0;
  color: #555;
  position: relative;
  padding-left: 25px;
  font-size: 0.95rem;
}

.feature-highlights li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: #28a745;
  font-weight: bold;
  font-size: 1.1rem;
}

/* 申请材料模块 */
.materials-section {
  background: #f8f9fa;
  padding: 100px 0;
}

.materials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 60px;
}

.material-card {
  background: white;
  padding: 35px 30px;
  border-radius: 15px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
  border-left: 4px solid #dc2626;
  transition: all 0.3s ease;
}

.material-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(220, 38, 38, 0.15);
  border-left-width: 6px;
}

.material-card h4 {
  color: #dc2626;
  font-size: 1.2rem;
  margin-bottom: 15px;
  font-weight: 600;
  display: flex;
  align-items: center;
}

.material-card h4::before {
  content: '📄';
  margin-right: 12px;
  font-size: 1.3rem;
}

.material-card p {
  color: #666;
  line-height: 1.7;
  font-size: 1rem;
}

/* 可注册商标模块 */
.registrable-section {
  background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
  color: white;
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}

.registrable-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
  animation: gradientShift 8s ease-in-out infinite;
  opacity: 0.3;
}

.registrable-section .section-title {
  color: #2c3e50;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  position: relative;
  z-index: 2;
}

.registrable-section .section-subtitle {
  color: #2c3e50;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
  position: relative;
  z-index: 2;
}

.registrable-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
  margin-top: 60px;
  position: relative;
  z-index: 2;
}

.registrable-card {
  background: rgba(255, 255, 255, 0.95);
  padding: 40px 30px;
  border-radius: 20px;
  backdrop-filter: blur(10px);
  border: 2px solid rgba(255, 255, 255, 0.8);
  text-align: center;
  transition: all 0.3s ease;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
}

.registrable-card:hover {
  transform: translateY(-5px);
  background: rgba(255, 255, 255, 1);
  border-color: #1e3a8a;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.25);
}

.registrable-card h4 {
  font-size: 1.4rem;
  margin-bottom: 20px;
  color: #1e3a8a;
  font-weight: 700;
  text-shadow: none;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.registrable-card .icon-container {
  width: 60px;
  height: 60px;
  margin-bottom: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
  border-radius: 15px;
  box-shadow: 0 4px 15px rgba(30, 58, 138, 0.3);
}

.registrable-card .icon-container svg {
  width: 32px;
  height: 32px;
  fill: white;
}

.registrable-card p {
  line-height: 1.8;
  color: #4b5563;
  text-shadow: none;
  font-weight: 500;
}

/* 注册程序模块 */
.procedure-section {
  background: white;
  padding: 100px 0;
}

.procedure-timeline {
  margin-top: 60px;
  position: relative;
}

.procedure-timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
  transform: translateX(-50%);
}

.procedure-step {
  display: flex;
  align-items: center;
  margin-bottom: 60px;
  position: relative;
}

.procedure-step:nth-child(even) {
  flex-direction: row-reverse;
}

.procedure-step:nth-child(even) .step-content {
  text-align: right;
}

.step-number {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  box-shadow: 0 5px 15px rgba(30, 58, 138, 0.3);
}

.step-content {
  flex: 1;
  padding: 0 60px;
}

.step-content h4 {
  color: #2c3e50;
  font-size: 1.3rem;
  margin-bottom: 15px;
  font-weight: 600;
}

.step-content p {
  color: #666;
  line-height: 1.7;
  margin-bottom: 10px;
}

.step-duration {
  color: #1e3a8a;
  font-weight: 600;
  font-size: 0.9rem;
}

/* 常见问题模块 */
.faq-section {
  background: #f8f9fa;
  padding: 100px 0;
}

.faq-container {
  max-width: 800px;
  margin: 0 auto;
  margin-top: 60px;
}

.faq-item {
  background: white;
  border-radius: 15px;
  margin-bottom: 20px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
  overflow: hidden;
  transition: all 0.3s ease;
}

.faq-item:hover {
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
  transform: translateY(-2px);
}

.faq-question {
  padding: 25px 30px;
  background: white;
  border: none;
  width: 100%;
  text-align: left;
  font-size: 1.1rem;
  font-weight: 600;
  color: #2c3e50;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all 0.3s ease;
}

.faq-question:hover {
  background: #f8f9fa;
}

.faq-question::after {
  content: '+';
  font-size: 1.5rem;
  color: #1e3a8a;
  transition: transform 0.3s ease;
}

.faq-question.active::after {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 30px;
  max-height: 0;
  overflow: hidden;
  transition: all 0.3s ease;
}

.faq-answer.active {
  max-height: 200px;
  padding: 0 30px 25px;
}

.faq-answer p {
  color: #666;
  line-height: 1.7;
}

/* 联系CTA模块 */
.contact-cta {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  text-align: center;
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}

.contact-cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
  animation: gradientShift 8s ease-in-out infinite;
}

.contact-cta h2 {
  font-size: 3rem;
  margin-bottom: 25px;
  color: white;
  font-weight: 700;
  position: relative;
  z-index: 2;
}

.contact-cta p {
  font-size: 1.3rem;
  margin-bottom: 40px;
  opacity: 0.9;
  position: relative;
  z-index: 2;
}

.cta-buttons {
  display: flex;
  gap: 25px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
  z-index: 2;
}

.btn-primary-cta {
  background: white;
  color: #1e3a8a;
  padding: 18px 40px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
  transition: all 0.3s ease;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.btn-primary-cta:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

.btn-secondary-cta {
  background: transparent;
  color: white;
  padding: 18px 40px;
  border: 2px solid white;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
  transition: all 0.3s ease;
}

.btn-secondary-cta:hover {
  background: white;
  color: #1e3a8a;
  transform: translateY(-3px);
}

@media (max-width: 768px) {
  .trademark-hero h1 {
    font-size: 2.8rem;
  }

  .trademark-hero .subtitle {
    font-size: 1.1rem;
  }

  .content-section {
    padding: 60px 0;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
  }

  .materials-grid,
  .registrable-grid {
    grid-template-columns: 1fr;
    gap: 25px;
  }
}

@media (max-width: 480px) {
  .features-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .procedure-timeline::before {
    left: 30px;
  }

  .step-number {
    left: 30px;
    transform: none;
  }

  .step-content {
    padding-left: 80px;
    padding-right: 20px;
  }

  .procedure-step:nth-child(even) {
    flex-direction: row;
  }

  .procedure-step:nth-child(even) .step-content {
    text-align: left;
    padding-left: 80px;
    padding-right: 20px;
  }

  .hero-actions,
  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }

  .primary-cta-button,
  .secondary-cta-button,
  .btn-primary-cta,
  .btn-secondary-cta {
    width: 100%;
    max-width: 300px;
  }
}