/* Design read: 教师官网的浅色编辑式评价墙，沿用官网 tokens。
 * DESIGN_VARIANCE 6 / MOTION_INTENSITY 5 / VISUAL_DENSITY 3.
 * 两排短评条 + 一排署名卡片，分别流动，保持紧凑的首页区块。 */
.home-reviews { overflow: clip; padding-block: 32px 36px; border-top: 1px solid var(--lp-line); }
.home-reviews [hidden] { display: none; }
.reviews-intro { text-align: center; }
.reviews-identity { display: flex; align-items: center; justify-content: center; gap: 10px; }
.reviews-identity img { display: block; width: 32px; height: 32px; }
.reviews-identity p { color: var(--lp-muted); font-size: 12px; font-weight: 500; }
.reviews-intro h2 { margin-top: 10px; font-size: clamp(30px, 3.6vw, 40px); font-weight: 600; line-height: 1.35; letter-spacing: -.045em; text-wrap: balance; }
.reviews-intro h2 span { display: inline-block; color: var(--lp-blue); white-space: nowrap; }
@supports ((background-clip: text) or (-webkit-background-clip: text)) {
  .reviews-intro h2 span {
    /* 两个相同色谱周期，移动半张背景即可无跳色地循环。 */
    background-image: linear-gradient(90deg, #2457e5 0%, #7950d9 12.5%, #d13d87 25%, #397ee7 37.5%, #2457e5 50%, #7950d9 62.5%, #d13d87 75%, #397ee7 87.5%, #2457e5 100%);
    background-size: 200% 100%;
    background-position: 0% 50%;
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
  }
  @media (prefers-reduced-motion: no-preference) {
    .reviews-intro h2 span { animation: reviews-title-spectrum 7s linear infinite; }
  }
}
@keyframes reviews-title-spectrum {
  from { background-position: 0% 50%; }
  to { background-position: 100% 50%; }
}
.reviews-lead { margin-top: 16px; color: var(--lp-muted); font-size: 16px; line-height: 1.8; }
.reviews-wall { margin-top: 26px; }
.reviews-viewport {
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: thin;
  scrollbar-color: #c8d1df transparent;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent);
}
.reviews-viewport:focus-visible { outline: 2px solid var(--lp-blue); outline-offset: -3px; }
.reviews-track { display: flex; width: max-content; padding-block: 4px 10px; }
.reviews-group { display: flex; flex-shrink: 0; gap: 16px; padding-right: 16px; }
.reviews-viewport-strips + .reviews-viewport-strips { margin-top: 6px; }
.review-strip { display: flex; align-items: center; gap: 18px; margin: 0; padding: 11px 19px; border: 1px solid var(--lp-line); border-radius: 12px; background: #fff; white-space: nowrap; }
.review-strip blockquote { margin: 0; color: #596373; font-size: 13px; line-height: 1.6; }
.review-strip figcaption { color: var(--lp-muted); font-size: 12px; }
.reviews-viewport-cards { margin-top: 14px; }
.reviews-viewport-cards .reviews-track { padding-block: 6px 16px; }
.review-card {
  display: flex;
  flex-direction: column;
  flex: 0 0 340px;
  width: 340px;
  gap: 12px;
  padding: 20px 22px;
  border: 1px solid var(--lp-line);
  border-radius: 16px;
  background: #fff;
}
.review-card blockquote { margin: 0; color: #596373; font-size: 13px; line-height: 1.85; text-wrap: pretty; }
.review-author { display: flex; align-items: center; gap: 11px; padding-bottom: 12px; border-bottom: 1px solid var(--lp-line); }
.review-avatar { display: block; flex: 0 0 40px; width: 40px; height: 40px; border-radius: 50%; background: #edf1f8; object-fit: cover; }
.review-author > div { display: grid; gap: 3px; }
.review-role { color: #414b5c; font-size: 12px; font-weight: 500; }
.review-context { color: var(--lp-muted); font-size: 11px; }
.reviews-controls { display: flex; align-items: center; justify-content: center; gap: 24px; padding-top: 4px; }
.reviews-control { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 8px 4px; border: 0; background: transparent; color: var(--lp-muted); font: inherit; font-size: 12px; cursor: pointer; }
.reviews-control:hover { color: var(--lp-blue); }
.reviews-motion-symbol { width: 9px; height: 11px; border-inline: 2px solid currentColor; }
[data-reviews-pause][aria-pressed="true"] .reviews-motion-symbol { width: 0; height: 0; border: 5px solid transparent; border-left: 8px solid currentColor; border-right: 0; }

/* 基础布局始终可滚动；JS 只在非触摸设备允许动态效果时启用循环。 */
.reviews-viewport.is-moving { overflow-x: hidden; }
.reviews-viewport.is-moving .reviews-track { animation: reviews-drift var(--reviews-duration, 90s) linear infinite; will-change: transform; }
.reviews-viewport-reverse.is-moving .reviews-track { animation-direction: reverse; }
.reviews-wall.is-paused .reviews-track,
.reviews-wall.is-offscreen .reviews-track,
.reviews-viewport:focus-within .reviews-track { animation-play-state: paused; }
@keyframes reviews-drift { to { transform: translateX(calc(-1 * var(--reviews-distance))); } }
.reviews-wall.is-expanded .reviews-viewport { width: min(1160px, calc(100% - 64px)); margin-inline: auto; overflow: visible; -webkit-mask-image: none; mask-image: none; }
.reviews-wall.is-expanded .reviews-track { display: block; width: 100%; }
.reviews-wall.is-expanded .reviews-group { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; padding: 0; }
.reviews-wall.is-expanded .review-strip { white-space: normal; flex-wrap: wrap; gap: 6px 16px; }
.reviews-wall.is-expanded .review-card { width: auto; }

@media (max-width: 700px) {
  .home-reviews { padding-block: 24px 28px; }
  .reviews-wall { margin-top: 20px; }
  .reviews-group { gap: 14px; padding-right: 14px; }
  .review-strip { gap: 12px; padding: 10px 16px; }
  .review-card { flex-basis: 300px; width: 300px; padding: 18px; }
  .reviews-viewport { -webkit-mask-image: none; mask-image: none; }
  .reviews-track { padding-left: 20px; }
  .reviews-wall.is-expanded .reviews-viewport { width: calc(100% - 40px); }
  .reviews-wall.is-expanded .reviews-track { padding-left: 0; }
  .reviews-wall.is-expanded .reviews-group { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  .reviews-intro h2 span { animation: none; }
  .reviews-viewport.is-moving .reviews-track { animation: none; will-change: auto; }
  .reviews-viewport.is-moving { overflow-x: auto; }
  .reviews-group[aria-hidden="true"] { display: none; }
}
@media (forced-colors: active) {
  .reviews-intro h2 span { background-image: none; color: CanvasText; -webkit-text-fill-color: currentColor; animation: none; }
}