/* 零售大脑三视频卡片。此文件在独立页面加载，不粘贴到富文本编辑器。 */
:root {
  --rb-green: #078346;
  --rb-ink: #173a28;
  --rb-text: #5a6e63;
  --rb-bg: #f5f3f7;
  --rb-font: 'Jost', 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { margin: 0; padding: 0; background: var(--rb-bg); }
body { margin: 0; padding: 0; color: var(--rb-ink); font-family: var(--rb-font); -webkit-font-smoothing: antialiased; }
.rb-section { display: block; width: 100%; margin: 0; padding: 42px 28px 48px; background: var(--rb-bg); }
.rb-container { width: 100%; max-width: 1518px; margin: 0 auto; }
.rb-heading { width: 100%; max-width: 1200px; margin: 0 auto 54px; text-align: center; }
.rb-eyebrow { display: inline-flex; align-items: center; gap: 8px; margin: 0 0 14px; color: var(--rb-green); font-size: 11px; font-weight: 600; line-height: 1.5; letter-spacing: 2px; text-transform: uppercase; }
.rb-dot { display: block; width: 5px; height: 5px; border-radius: 50%; background: var(--rb-green); }
.rb-heading h2 { margin: 0 0 15px; padding: 0; font-size: 30px; font-weight: 650; line-height: 1.25; letter-spacing: -1px; }
.rb-heading p { margin: 0 auto; max-width: 900px; color: #7b8d84; font-size: 15px; line-height: 1.8; }
.rb-cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; align-items: stretch; }
.rb-card { display: flex; min-width: 0; flex-direction: column; padding: 24px 24px 30px; border-radius: 24px; background: #fff; }
.rb-cover { display: block; width: 100%; aspect-ratio: 16 / 9; position: relative; margin: 0 0 23px; overflow: hidden; border-radius: 12px; background: #e4ebe7; color: var(--rb-green); text-decoration: none; }
.rb-cover img { display: block; width: 100%; height: 100%; aspect-ratio: 16 / 9; object-fit: cover; border: 0; }
.rb-play { position: absolute; display: flex; align-items: center; justify-content: center; right: 13px; bottom: 13px; width: 32px; height: 32px; border: 1px solid #fff; border-radius: 50%; background: var(--rb-green); color: #fff; box-shadow: 0 2px 8px rgba(0, 0, 0, .14); }
.rb-play svg { display: block; width: 14px; height: 16px; margin-left: 2px; }
.rb-card h3 { min-height: 2.56em; margin: 0 0 18px; font-size: 30px; font-weight: 550; line-height: 1.28; letter-spacing: -.5px; overflow-wrap: break-word; }
.rb-title-part { display: block; }
.rb-card p { color: var(--rb-text); flex: 1 1 auto; margin: 0 0 26px; font-size: 14px; font-weight: 400; line-height: 1.65; overflow-wrap: break-word; }
.rb-watch { display: inline-flex; align-items: center; align-self: flex-start; gap: 8px; min-height: 28px; margin: 0; padding: 0; color: var(--rb-green); font-size: 14px; font-weight: 650; line-height: 1.4; text-decoration: none; }
.rb-watch svg { width: 16px; height: 16px; flex-shrink: 0; }
.rb-cover:focus-visible, .rb-watch:focus-visible { outline: 3px solid var(--rb-green); outline-offset: 4px; }
.rb-cover:hover .rb-play { box-shadow: 0 2px 12px rgba(7, 131, 70, .35); }
.rb-watch:hover { text-decoration: underline; text-underline-offset: 4px; }
@media (max-width: 1199px) {
  .rb-section { padding: 38px 24px 42px; }
  .rb-heading { margin-bottom: 38px; }
  .rb-heading h2 { font-size: 40px; }
  .rb-card { padding: 21px 21px 26px; border-radius: 22px; }
  .rb-cards { gap: 20px; }
  .rb-card h3 { font-size: 25px; }
  .rb-card p { font-size: 13px; line-height: 1.8; }
}
@media (max-width: 959px) {
  .rb-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .rb-heading h2 { font-size: 36px; }
}
@media (max-width: 639px) {
  .rb-section { padding: 32px 16px 32px; }
  .rb-heading { margin-bottom: 28px; }
  .rb-heading h2 { font-size: 30px; line-height: 1.32; letter-spacing: -.6px; }
  .rb-heading p { font-size: 13px; line-height: 1.85; }
  .rb-eyebrow { font-size: 10px; letter-spacing: 1.4px; margin-bottom: 12px; }
  .rb-cards { grid-template-columns: minmax(0, 1fr); gap: 20px; }
  .rb-card { padding: 20px 20px 25px; }
  .rb-card h3 { min-height: 0; font-size: 25px; margin-bottom: 14px; }
  .rb-cover { margin-bottom: 19px; }
  .rb-card p { margin-bottom: 21px; }
  .rb-watch { min-height: 32px; }
}
@media (max-width: 359px) {
  .rb-section { padding-left: 12px; padding-right: 12px; }
  .rb-card { padding: 16px 16px 22px; }
  .rb-card h3 { font-size: 23px; }
  .rb-heading h2 { font-size: 27px; }
}