.page-products {
  --pp-gap: clamp(14px, 2.4vw, 24px);
  --pp-line: 3px solid var(--char);
}

/* 首屏 */
.page-products .pp-hero {
  padding-top: clamp(20px, 3vw, 32px);
  padding-bottom: clamp(28px, 5vw, 56px);
}

.page-products .pp-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 4vw, 40px);
  margin-top: clamp(16px, 3vw, 28px);
}

.page-products .pp-hero__title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(30px, 5.2vw, 54px);
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--cream);
  margin: 12px 0 16px;
}

.page-products .pp-hero__lead {
  font-size: 16px;
  line-height: 1.85;
  color: var(--mist);
  max-width: 62ch;
  margin: 0;
}

.page-products .pp-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 28px);
}

.page-products .pp-hero__stats {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 16px;
  margin: clamp(24px, 4vw, 34px) 0 0;
  padding: 0;
}

.page-products .pp-hero__stats li {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding-left: 12px;
  border-left: 2px solid var(--pine);
  font-size: 13px;
  line-height: 1.5;
  color: var(--mist);
}

.page-products .pp-hero__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1.1;
  color: var(--gold);
}

.page-products .pp-hero__figure {
  margin: 0;
}

.page-products .al-figure__frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-products .pp-hero__figure .al-figure__frame {
  border: var(--pp-line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-hard);
  background: var(--teal);
}

.page-products .pp-hero__figure .al-figure__cap {
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--mist);
}

/* 页内快速定位 */
.page-products .pp-quicknav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  margin-top: clamp(22px, 4vw, 38px);
  padding-bottom: 6px;
  scrollbar-width: thin;
}

.page-products .pp-quicknav__link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 9px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--cream);
  text-decoration: none;
  background: rgba(28, 90, 80, 0.4);
  border: 2px solid var(--pine);
  border-radius: var(--radius-pill);
  transition: border-color .2s var(--ease), color .2s var(--ease), background .2s var(--ease);
}

.page-products .pp-quicknav__link:hover,
.page-products .pp-quicknav__link:focus-visible {
  border-color: var(--gold);
  color: var(--gold);
  outline: none;
}

.page-products .pp-quicknav__link[aria-current="true"] {
  border-color: var(--blue);
  color: var(--blue);
  background: rgba(91, 140, 255, 0.12);
}

/* 章节标题 */
.page-products .pp-sechead {
  max-width: 780px;
  margin-bottom: clamp(22px, 4vw, 34px);
}

.page-products .pp-sechead__lead {
  margin: 12px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--mist);
}

/* 四组玩法 */
.page-products .pp-rooms__figure {
  margin: 0 0 clamp(22px, 4vw, 34px);
}

.page-products .pp-rooms__figure .al-figure__frame {
  border: var(--pp-line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-hard);
}

.page-products .pp-rooms__figure .al-figure__cap {
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--mist);
}

.page-products .pp-rooms__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pp-gap);
}

.page-products .pp-room {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 20px 20px;
  border: var(--pp-line);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(14, 59, 54, 0.96), rgba(7, 28, 26, 0.99));
  box-shadow: var(--shadow-hard);
  transition: transform .22s var(--ease), box-shadow .22s var(--ease);
}

.page-products .pp-room:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 0 rgba(16, 22, 21, .9);
}

.page-products .pp-room__idx {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--gold);
}

.page-products .pp-room__title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 21px;
  line-height: 1.3;
  color: var(--cream);
}

.page-products .pp-room__desc {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--mist);
}

.page-products .pp-room__list {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: grid;
  gap: 7px;
}

.page-products .pp-room__list li {
  position: relative;
  padding-left: 17px;
  font-size: 16px;
  line-height: 1.65;
  color: var(--cream);
}

.page-products .pp-room__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--coral);
}

/* 版本筛选与对比矩阵 */
.page-products .pp-versions__panel {
  position: relative;
  isolation: isolate;
  padding: clamp(22px, 4vw, 40px);
  border: var(--pp-line);
  border-radius: calc(var(--radius) + 8px);
  background: var(--teal);
  overflow: hidden;
}

.page-products .pp-versions__bg {
  position: absolute;
  inset: 0;
  margin: 0;
  opacity: .2;
  z-index: -1;
  pointer-events: none;
}

.page-products .pp-versions__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-products .pp-tiles {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 clamp(24px, 4vw, 38px);
}

.page-products .pp-tile {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 20px;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--cream);
  text-decoration: none;
  background: var(--ink);
  border: 2px solid var(--char);
  border-radius: var(--radius-pill);
  transition: border-color .2s var(--ease), color .2s var(--ease), background .2s var(--ease);
}

.page-products .pp-tile:hover,
.page-products .pp-tile:focus-visible {
  border-color: var(--blue);
  color: var(--blue);
  background: rgba(91, 140, 255, 0.1);
  outline: none;
}

.page-products .pp-matrix__head {
  margin-bottom: 16px;
}

.page-products .pp-matrix__title {
  margin: 0 0 8px;
  font-family: var(--font-serif);
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1.35;
  color: var(--cream);
}

.page-products .pp-matrix__note {
  margin: 0;
  font-size: 16px;
  line-height: 1.7;
  color: var(--mist);
}

.page-products .pp-matrix__scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: var(--pp-line);
  border-radius: var(--radius);
  background: var(--cream);
}

.page-products .pp-matrix__scroll:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 2px;
}

.page-products .pp-table {
  width: 100%;
  min-width: 800px;
  border-collapse: collapse;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
}

.page-products .pp-table th,
.page-products .pp-table td {
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid rgba(16, 22, 21, .14);
}

.page-products .pp-table thead th {
  padding: 12px 14px;
  background: var(--teal);
  color: var(--cream);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
  border-bottom: 2px solid var(--char);
}

.page-products .pp-table thead th:first-child {
  position: sticky;
  left: 0;
  z-index: 3;
  font-family: var(--font-sans);
  background: var(--teal);
  box-shadow: inset -2px 0 0 rgba(16, 22, 21, .4);
}

.page-products .pp-table tbody th {
  position: sticky;
  left: 0;
  z-index: 2;
  min-width: 118px;
  font-weight: 700;
  color: var(--ink);
  background: var(--cream);
  box-shadow: inset -2px 0 0 rgba(16, 22, 21, .14);
}

.page-products .pp-table tbody tr:nth-child(even) td {
  background: rgba(28, 90, 80, .07);
}

.page-products .pp-table tbody tr:nth-child(even) th {
  background: #eee4d4;
}

.page-products .pp-table tbody tr:hover td {
  background: rgba(217, 164, 65, .18);
}

/* 阶段摘要 */
.page-products .pp-stages {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-products .pp-stage {
  border: var(--pp-line);
  border-radius: var(--radius);
  background: var(--teal);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.page-products .pp-stage > summary {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 14px;
  min-height: 60px;
  padding: 16px 20px;
  cursor: pointer;
  list-style: none;
  color: var(--cream);
}

.page-products .pp-stage > summary::-webkit-details-marker {
  display: none;
}

.page-products .pp-stage > summary:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: -3px;
}

.page-products .pp-stage__id {
  min-width: 42px;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--gold);
}

.page-products .pp-stage__name {
  flex: 1 1 auto;
  font-family: var(--font-serif);
  font-size: 18px;
  line-height: 1.35;
  color: var(--cream);
}

.page-products .pp-stage__mark {
  font-size: 20px;
  line-height: 1;
  color: var(--coral);
  transition: transform .24s var(--ease);
}

.page-products .pp-stage[open] .pp-stage__mark {
  transform: rotate(45deg);
}

.page-products .pp-stage__body {
  padding: 0 20px 20px;
  border-top: 1px solid rgba(217, 164, 65, .28);
}

.page-products .pp-stage__body p {
  margin: 16px 0 12px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist);
}

.page-products .pp-stage__body ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-products .pp-stage__body li {
  position: relative;
  padding-left: 18px;
  font-size: 16px;
  line-height: 1.7;
  color: var(--cream);
}

.page-products .pp-stage__body li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 9px;
  height: 2px;
  background: var(--gold);
}

/* 推荐路径 */
.page-products .pp-paths {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pp-gap);
}

.page-products .pp-path {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 22px 20px;
  border: var(--pp-line);
  border-radius: var(--radius);
  background: var(--ink);
  box-shadow: var(--shadow-hard);
}

.page-products .pp-path__who {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 20px;
  line-height: 1.3;
  color: var(--gold);
}

.page-products .pp-path__steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-products .pp-path__step {
  position: relative;
  padding-left: 30px;
  padding-bottom: 18px;
  font-size: 16px;
  line-height: 1.7;
  color: var(--cream);
}

.page-products .pp-path__step:last-child {
  padding-bottom: 0;
}

.page-products .pp-path__step::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 7px;
  width: 10px;
  height: 10px;
  border: 2px solid var(--gold);
  border-radius: 3px;
  background: var(--ink);
  z-index: 1;
}

.page-products .pp-path__step::after {
  content: "";
  position: absolute;
  left: 12px;
  top: 22px;
  bottom: 0;
  width: 2px;
  background: var(--pine);
}

.page-products .pp-path__step:last-child::after {
  display: none;
}

/* 收藏与移动阅读 */
.page-products .pp-collect {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pp-gap);
}

.page-products .pp-collect__card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(20px, 3vw, 30px);
  border: var(--pp-line);
  border-radius: var(--radius);
  background: var(--teal);
  box-shadow: var(--shadow-hard);
}

.page-products .pp-collect__figure {
  margin: 0;
  border: 2px solid var(--char);
  border-radius: calc(var(--radius) - 6px);
  overflow: hidden;
  background: var(--ink);
}

.page-products .pp-collect__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 320px;
  object-fit: cover;
}

.page-products .pp-collect__card h3 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(20px, 2.2vw, 24px);
  line-height: 1.35;
  color: var(--cream);
}

.page-products .pp-collect__card p {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist);
}

.page-products .pp-collect__card .al-link {
  font-weight: 600;
}

.page-products .pp-cta {
  margin-top: clamp(24px, 4vw, 40px);
  padding: clamp(20px, 3.4vw, 32px);
  border: var(--pp-line);
  border-radius: var(--radius);
  background: linear-gradient(120deg, rgba(217, 164, 65, .16), rgba(240, 106, 77, .14));
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-products .pp-cta__text {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--cream);
}

.page-products .pp-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* 响应式 */
@media (min-width: 640px) {
  .page-products .pp-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  .page-products .pp-rooms__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .pp-paths {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-products .pp-collect {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .pp-cta {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .page-products .pp-cta__text {
    max-width: 62ch;
  }
}

@media (min-width: 960px) {
  .page-products .pp-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(28px, 4vw, 52px);
    align-items: center;
  }
}

@media (min-width: 1100px) {
  .page-products .pp-rooms__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .pp-paths {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pp-room,
  .page-products .pp-stage__mark,
  .page-products .pp-quicknav__link,
  .page-products .pp-tile {
    transition: none;
  }

  .page-products .pp-room:hover {
    transform: none;
  }
}
<<<END>>>