/* ================================================
   About Page 专用样式
   ================================================ */

/* 页面容器 */
.about-page {
  background-color: #FFFFFF;
}

/* ================================================
   Page Header 样式
   ================================================ */

.page-header {
  position: relative;
  width: 100%;
  padding: var(--spacing-xxl) var(--spacing-lg);
  background: linear-gradient(135deg, #1A8FA3 0%, #2563A8 100%);
  color: var(--color-white);
  text-align: center;
}

.page-header__container {
  max-width: 1000px;
  margin: 0 auto;
}

.page-header__title {
  font-size: clamp(40px, 5vw, 56px);
  font-weight: var(--font-weight-semibold);
  margin: 0 0 var(--spacing-md);
  line-height: 1.2;
}

.page-header__subtitle {
  font-size: clamp(18px, 2vw, 22px);
  margin: 0;
  line-height: 1.5;
  opacity: 0.95;
}

/* ================================================
   Releases Section 样式
   ================================================ */

.releases {
  position: relative;
  width: 100%;
  padding: var(--spacing-xxl) var(--spacing-lg);
  background-color: #F8F9FA;
}

.releases__container {
  max-width: 1200px;
  margin: 0 auto;
}

.releases__title {
  font-size: clamp(32px, 4vw, 42px);
  font-weight: var(--font-weight-semibold);
  color: #2C3E50;
  margin: 0 0 var(--spacing-xl);
  text-align: center;
}

.releases__content {
  max-width: 900px;
  margin: 0 auto var(--spacing-xl);
}

.releases__intro,
.releases__info,
.releases__scripts {
  font-size: clamp(16px, 1.6vw, 18px);
  color: #5A6C7D;
  line-height: 1.7;
  margin-bottom: var(--spacing-md);
}

.releases__intro code,
.releases__scripts code {
  padding: 2px 8px;
  background-color: #E9ECEF;
  border-radius: 4px;
  font-family: 'Monaco', 'Consolas', monospace;
  font-size: 0.9em;
  color: #2C3E50;
}

.releases__link {
  color: #1A8FA3;
  text-decoration: none;
  border-bottom: 1px solid #1A8FA3;
  transition: all var(--transition-fast);
}

.releases__link:hover {
  color: #17809A;
  border-bottom-color: #17809A;
}

/* Download Cards Grid */
.releases__downloads {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xxl);
}

/* Download Card */
.download-card {
  position: relative;
  background-color: var(--color-white);
  border-radius: 12px;
  padding: var(--spacing-xl);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  transition: all var(--transition-base);
  border: 2px solid transparent;
}

.download-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
  border-color: #1A8FA3;
}

.download-card__badge {
  display: inline-block;
  padding: 4px 12px;
  background-color: #1A8FA3;
  color: var(--color-white);
  font-size: 12px;
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-radius: 4px;
  margin-bottom: var(--spacing-md);
}

.download-card__version {
  font-size: clamp(24px, 2.5vw, 28px);
  font-weight: var(--font-weight-semibold);
  color: #2C3E50;
  margin: 0 0 var(--spacing-sm);
}

.download-card__date {
  font-size: 14px;
  color: #6C757D;
  margin: 0 0 var(--spacing-lg);
}

.download-card__actions {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.download-card__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: 12px 24px;
  font-size: 15px;
  font-weight: var(--font-weight-medium);
  border-radius: 6px;
  text-decoration: none;
  transition: all var(--transition-base);
  cursor: pointer;
}

.download-card__button--primary {
  background-color: #1A8FA3;
  color: var(--color-white);
  border: 2px solid #1A8FA3;
}

.download-card__button--primary:hover {
  background-color: #17809A;
  border-color: #17809A;
  transform: translateY(-1px);
}

.download-card__button--secondary {
  background-color: transparent;
  color: #1A8FA3;
  border: 2px solid #E0E0E0;
}

.download-card__button--secondary:hover {
  border-color: #1A8FA3;
  background-color: rgba(26, 143, 163, 0.05);
}

.download-card__button svg {
  width: 20px;
  height: 20px;
}

/* ================================================
   Getting Started Section 样式
   ================================================ */

.getting-started {
  position: relative;
  width: 100%;
  padding: var(--spacing-xxl) var(--spacing-lg);
  background-color: var(--color-white);
}

.getting-started__container {
  max-width: 1200px;
  margin: 0 auto;
}

.getting-started__title {
  font-size: clamp(32px, 4vw, 42px);
  font-weight: var(--font-weight-semibold);
  color: #2C3E50;
  margin: 0 0 var(--spacing-lg);
  text-align: center;
}

.getting-started__intro,
.getting-started__highlight {
  font-size: clamp(16px, 1.6vw, 18px);
  color: #5A6C7D;
  line-height: 1.7;
  max-width: 900px;
  margin: 0 auto var(--spacing-md);
  text-align: center;
}

.getting-started__highlight {
  font-size: clamp(18px, 1.8vw, 20px);
  color: #2C3E50;
  margin-bottom: var(--spacing-xl);
}

.getting-started__link {
  color: #1A8FA3;
  text-decoration: none;
  border-bottom: 1px solid #1A8FA3;
  transition: all var(--transition-fast);
}

.getting-started__link:hover {
  color: #17809A;
  border-bottom-color: #17809A;
}

/* Resource Cards Grid */
.getting-started__resources {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xxl);
}

/* Resource Card */
.resource-card {
  position: relative;
  background-color: #F8F9FA;
  border-radius: 12px;
  padding: var(--spacing-xl);
  transition: all var(--transition-base);
  border: 2px solid transparent;
  text-align: center;
}

.resource-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
  border-color: #1A8FA3;
  background-color: var(--color-white);
}

.resource-card__icon {
  display: flex;
  justify-content: center;
  margin-bottom: var(--spacing-md);
}

.resource-card__icon svg {
  transition: transform var(--transition-base);
}

.resource-card:hover .resource-card__icon svg {
  transform: scale(1.1);
}

.resource-card__title {
  font-size: clamp(20px, 2vw, 24px);
  font-weight: var(--font-weight-semibold);
  color: #2C3E50;
  margin: 0 0 var(--spacing-md);
}

.resource-card__description {
  font-size: clamp(14px, 1.4vw, 16px);
  color: #5A6C7D;
  line-height: 1.6;
  margin: 0 0 var(--spacing-lg);
}

.resource-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: #1A8FA3;
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.resource-card__link:hover {
  color: #17809A;
  gap: var(--spacing-sm);
}

.resource-card__link svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-fast);
}

.resource-card__link:hover svg {
  transform: translateX(4px);
}

/* ================================================
   About Page - 响应式设计
   ================================================ */

/* 平板设备 */
@media (max-width: 1024px) {
  .page-header {
    padding: var(--spacing-xl) var(--spacing-md);
  }
  
  .releases,
  .getting-started {
    padding: var(--spacing-xl) var(--spacing-md);
  }
  
  .releases__downloads {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
  }
  
  .getting-started__resources {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
  }
}

/* 移动设备 */
@media (max-width: 768px) {
  .page-header {
    padding: var(--spacing-lg) var(--spacing-md);
  }
  
  .page-header__title {
    font-size: 32px;
  }
  
  .page-header__subtitle {
    font-size: 16px;
  }
  
  .releases,
  .getting-started {
    padding: var(--spacing-lg) var(--spacing-md);
  }
  
  .releases__title,
  .getting-started__title {
    font-size: 28px;
  }
  
  .releases__downloads {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .download-card {
    padding: var(--spacing-lg);
  }
  
  .getting-started__resources {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .resource-card {
    padding: var(--spacing-lg);
  }
}

/* 小屏手机 */
@media (max-width: 480px) {
  .page-header__title {
    font-size: 28px;
  }
  
  .page-header__subtitle {
    font-size: 15px;
  }
  
  .releases__intro,
  .releases__info,
  .releases__scripts,
  .getting-started__intro,
  .getting-started__highlight {
    font-size: 15px;
  }
  
  .download-card__version {
    font-size: 22px;
  }
  
  .download-card__button {
    font-size: 14px;
    padding: 10px 20px;
  }
}

/* 超宽屏幕 */
@media (min-width: 1440px) {
  .page-header__container {
    max-width: 1100px;
  }
  
  .releases__container,
  .getting-started__container {
    max-width: 1280px;
  }
}

/* 打印样式 */
@media print {
  .page-header {
    background: none !important;
    color: #000000 !important;
    border-bottom: 2px solid #000000;
  }
  
  .page-header__title,
  .page-header__subtitle {
    color: #000000 !important;
  }
  
  .download-card,
  .resource-card {
    box-shadow: none;
    border: 1px solid #CCCCCC;
    break-inside: avoid;
  }
  
  .download-card:hover,
  .resource-card:hover {
    transform: none;
  }
}

/* 减少动画（用户偏好） */
@media (prefers-reduced-motion: reduce) {
  .download-card,
  .resource-card {
    transition: none;
  }
  
  .download-card:hover,
  .resource-card:hover {
    transform: none;
  }
  
  .resource-card__icon svg,
  .download-card__button,
  .resource-card__link {
    transition: none;
  }
}