/* ==================== 介绍页面通用样式 - Apple风格 ==================== */

/* 容器 */
.container {
  max-width: 1068px;
  margin: 0 auto;
  padding: 0 40px;
}

@media (max-width: 1068px) {
  .container {
    padding: 0 32px;
  }
}

@media (max-width: 734px) {
  .container {
    padding: 0 24px;
  }
}

/* Hero区域 */
.intro-hero {
  background: #f5f5f7;
  padding: 80px 0 60px;
}

.intro-back-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'Inter', sans-serif;
  font-size: 15px;
  font-weight: 500;
  color: #0071e3;
  text-decoration: none;
  margin-bottom: 40px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.intro-back-btn:hover {
  color: #0077ed;
}

.intro-back-btn svg {
  width: 20px;
  height: 20px;
}

.intro-hero-content {
  text-align: center;
}

.intro-label {
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  font-weight: 600;
  color: #0071e3;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 16px;
}

.intro-title {
  font-family: 'Inter', sans-serif;
  font-size: 56px;
  font-weight: 600;
  color: #1d1d1f;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin-bottom: 16px;
}

.intro-subtitle {
  font-family: 'Inter', sans-serif;
  font-size: 21px;
  font-weight: 400;
  color: #6e6e73;
  line-height: 1.5;
  max-width: 700px;
  margin: 0 auto;
}

/* 内容区域 */
.intro-content {
  background: white;
  padding: 100px 0;
}

.intro-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  margin-bottom: 120px;
}

.intro-section:last-of-type {
  margin-bottom: 100px;
}

.intro-section-reverse {
  direction: rtl;
}

.intro-section-reverse > * {
  direction: ltr;
}

.intro-section-image {
  position: relative;
}

.intro-section-image img {
  width: 100%;
  border-radius: 24px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
}

.intro-section-text {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.intro-section-title {
  font-family: 'Inter', sans-serif;
  font-size: 32px;
  font-weight: 600;
  color: #1d1d1f;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.intro-section-description {
  font-family: 'Inter', sans-serif;
  font-size: 17px;
  font-weight: 400;
  color: #6e6e73;
  line-height: 1.7;
}

/* 功能特性列表 */
.intro-feature-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

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

.intro-feature-icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  background: rgba(0, 113, 227, 0.08);
  border-radius: 10px;
  padding: 6px;
  color: #0071e3;
}

.intro-feature-icon svg {
  width: 100%;
  height: 100%;
}

.intro-feature-content {
  flex: 1;
}

.intro-feature-content h3 {
  font-family: 'Inter', sans-serif;
  font-size: 17px;
  font-weight: 600;
  color: #1d1d1f;
  margin-bottom: 4px;
}

.intro-feature-content p {
  font-family: 'Inter', sans-serif;
  font-size: 15px;
  font-weight: 400;
  color: #6e6e73;
  line-height: 1.6;
}

/* 步骤列表 */
.intro-steps {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.intro-step {
  display: flex;
  align-items: flex-start;
  gap: 24px;
}

.intro-step-number {
  font-family: 'Inter', sans-serif;
  font-size: 24px;
  font-weight: 700;
  color: #0071e3;
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 113, 227, 0.08);
  border-radius: 12px;
}

.intro-step-content {
  flex: 1;
  padding-top: 8px;
}

.intro-step-content h3 {
  font-family: 'Inter', sans-serif;
  font-size: 19px;
  font-weight: 600;
  color: #1d1d1f;
  margin-bottom: 6px;
}

.intro-step-content p {
  font-family: 'Inter', sans-serif;
  font-size: 15px;
  font-weight: 400;
  color: #6e6e73;
  line-height: 1.6;
}

/* CTA区域 */
.intro-cta-section {
  text-align: center;
  padding: 80px 0;
  background: #f5f5f7;
  border-radius: 32px;
  margin: 0 -40px;
}

.intro-cta-section h2 {
  font-family: 'Inter', sans-serif;
  font-size: 36px;
  font-weight: 600;
  color: #1d1d1f;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
}

.intro-cta-section p {
  font-family: 'Inter', sans-serif;
  font-size: 19px;
  font-weight: 400;
  color: #6e6e73;
  margin-bottom: 40px;
}

.intro-cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
}

.intro-cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  font-family: 'Inter', sans-serif;
  font-size: 17px;
  font-weight: 500;
  text-decoration: none;
  border-radius: 980px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.intro-cta-primary {
  background: #000;
  color: white;
}

.intro-cta-primary:hover {
  background: #1d1d1f;
}

.intro-cta-secondary {
  background: transparent;
  color: #0071e3;
  border: 1px solid #d2d2d7;
}

.intro-cta-secondary:hover {
  border-color: #0071e3;
}

/* 响应式适配 */
@media (max-width: 992px) {
  .intro-section {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .intro-section-reverse {
    direction: ltr;
  }

  .intro-title {
    font-size: 48px;
  }

  .intro-cta-section {
    margin: 0 -32px;
    border-radius: 24px;
  }
}

@media (max-width: 734px) {
  .intro-hero {
    padding: 60px 0 48px;
  }

  .intro-title {
    font-size: 40px;
  }

  .intro-subtitle {
    font-size: 19px;
  }

  .intro-content {
    padding: 80px 0;
  }

  .intro-section {
    margin-bottom: 80px;
  }

  .intro-section-title {
    font-size: 28px;
  }

  .intro-cta-section {
    margin: 0 -24px;
    padding: 60px 24px;
  }

  .intro-cta-section h2 {
    font-size: 28px;
  }

  .intro-cta-buttons {
    flex-direction: column;
  }

  .intro-cta-btn {
    width: 100%;
  }
}