:root {
  font-size: 16px;
}
body {
  margin: 0;
  padding: 0;
  background: #fff;
  font-family: 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
  color: #222;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
  box-sizing: border-box;
}
.app-container {
  padding: 1rem;
}
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 0 1.2rem 0;
}
.app-icon {
  width: 8rem;
  height: 8rem;
  border-radius: 20px;
  object-fit: cover;
  flex-shrink: 0;
}
.app-header-center {
  padding-left: 10px;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  min-width: 0;
}
.app-title-row {
  display: flex;
  align-items: center;
  margin-bottom: 0.7rem;
}
.app-title {
  font-size: 1.7rem;
  font-weight: 900;
  color: #222;
  margin-right: 0.5em;
}
.age-tag {
  display: inline-block;
  border: 1.5px solid #bbb;
  color: #666;
  font-size: 1rem;
  border-radius: 6px;
  padding: 0 0.5em;
  margin-left: 0.1em;
  background: #fff;
  font-weight: 600;
  line-height: 1.5;
}
.install-btn {
  background: #1890ff;
  color: #fff;
  border: none;
  border-radius: 24px;
  padding: 0.5em 2.2em;
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  margin-top: 0.2em;
  box-shadow: 0 2px 8px rgba(24,144,255,0.08);
  transition: background 0.2s;
}
.install-btn:active {
  background: #1769aa;
}
.help-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #1890ff;
  color: #fff;
  border: none;
  font-size: 1.6rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-left: 1.2rem;
  box-shadow: 0 2px 8px rgba(24,144,255,0.08);
  cursor: pointer;
  transition: background 0.2s;
}
.help-btn:active {
  background: #1769aa;
}
.app-rating {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding: 2rem 0 2rem 0;
  border-bottom: 1px solid #f0f0f0;
}
.rating-left {
  flex: 0 0 140px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-start;
  margin-right: 2.5rem;
}
.rating-title {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 0.7rem;
  color: #222;
}
.score {
  font-size: 3.2rem;
  font-weight: 800;
  color: #444;
  line-height: 1.1;
}
.score-total {
  font-size: 1.1rem;
  color: #888;
  font-weight: 600;
  margin-top: 0.2rem;
}
.rating-right {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  justify-content: flex-start;
  min-width: 120px;
}
.rating-bars {
  width: 120px;
  margin-top: 1.8rem;
  margin-bottom: 1.2rem;
}
.rating-bars .bar {
  height: 5px;
  background: #e0e0e0;
  border-radius: 3px;
  margin-bottom: 12px;
}
.rating-bars .bar1 { width: 80%; background: #888; }
.rating-bars .bar2 { width: 50%; }
.rating-bars .bar3 { width: 35%; }
.rating-bars .bar4 { width: 30%; }
.rating-bars .bar5 { width: 60%; }
.score-count {
  font-size: 1rem;
  color: #999;
  text-align: right;
}
.app-desc, .app-info {
  border-bottom: 1px solid #f0f0f0;
}
.app-desc h2, .app-info h2 {
  font-size: 1.5rem;
  font-weight: 800;
  height: 5rem;
  align-items: center;
  display: flex;
  margin-block-end: 0em;
  margin-block-start: 0em;
}
.app-desc p {
  font-size: 1rem;
  color: #333;
  margin: 0;
  margin-bottom: 1rem;
}
.app-info ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.app-info li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.3em 0;
  font-size: 0.9rem;
  line-height: 1.8rem;
  color: #999;
  border-top: 1px solid #f0f0f0;
}
.app-info li:last-child {
  border-bottom: none;
}
.app-info li span:first-child {
  font-weight: 500;
}
.app-info li span:last-child {
  font-size: 0.9rem;
  font-weight: 700;
  text-align: right;
  flex: 1;
  display: block;
  margin-left: 4em;
  white-space: normal;
  overflow: visible;
  text-overflow: unset;
}
.app-footer {
  font-size: 0.9rem;
  color: #aaa;
  margin-top: 2rem;
  text-align: center;
}
.app-header-info-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding: 0.2rem 0 1.2rem 0;
  font-family: inherit;
  color: #999;
  font-size: 1.1rem;
}
.header-info-left {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.header-score {
  font-size: 1.3rem;
  color: #444;
  font-weight: 700;
  line-height: 1.1;
}
.header-score-count {
  font-size: 0.95rem;
  color: #bbb;
  margin-top: 0.1em;
}
.header-info-center {
  font-size: 1.3rem;
  color: #888;
  font-weight: 700;
  text-align: center;
  flex: 1;
}
.header-info-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}
.header-age {
  font-size: 1.3rem;
  color: #bbb;
  font-weight: 700;
  line-height: 1.1;
}
.header-age-label {
  font-size: 0.95rem;
  color: #bbb;
  margin-top: 0.1em;
}
@media (max-width: 600px) {
  :root {
    font-size: 15px;
  }
  .app-container {
    padding: 1rem;
    padding-bottom: 7rem;
  }
  .app-header {
    flex-direction: row;
    align-items: flex-start;
    padding: 0.7rem 0 0.7rem 0;
  }
  .app-icon {
    width: 7rem;
    height: 7rem;
    border-radius: 14px;
  }
  .app-header-center {
    padding-left: 1.2rem;
  }

  .age-tag {
    font-size: 0.85rem;
    border-radius: 4px;
    padding: 0 0.4em;
  }
  .install-btn {
    font-size: 1.1rem;
    padding: 0.4em 1.2em;
  }
  .help-btn {
    width: 25px;
    height: 25px;
    font-size: 1.1rem;
    margin-left: 0.5rem;
    margin-top: 1.5rem;
  }
  .app-rating {
    align-items: flex-start;
    padding: 1.2rem 0 1.2rem 0;
    border-top: 1px solid #f0f0f0;
  }
  .rating-left {
    flex: 1;
    margin-right: 0;
    margin-bottom: 1.2rem;
    align-items: flex-start;
  }
  .rating-right {
    width: 100%;
    min-width: 0;
    align-items: flex-end;
  }
  .rating-bars {
    width: 100%;
    height: 100%;
  }
  .app-header-info-row {
    font-size: 1rem;
    padding: 0.1rem 0 0.7rem 0;
  }
  .header-score {
    font-size: 1.1rem;
  }
  .header-info-center {
    font-size: 1.1rem;
  }
  .header-age {
    font-size: 1.1rem;
  }
}