.page-products {
  --pp-cable-h: 76px;
  --pp-node-max: 600px;
  background: var(--m-space);
  color: var(--m-white);
  overflow-x: hidden;
}

/* 面包屑 */
.page-products .m-crumb {
  padding-top: 24px;
}
.page-products .m-crumb ol {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-family: var(--m-font-mono);
  font-size: 0.85rem;
}
.page-products .m-crumb li + li::before {
  content: "/";
  margin-right: 12px;
  color: var(--m-gray);
}
.page-products .m-crumb a {
  color: var(--m-gold);
  text-decoration: none;
}
.page-products .m-crumb a:hover {
  color: var(--m-white);
}
.page-products .m-crumb [aria-current="page"] {
  color: var(--m-gray);
}

/* Hero 区 */
.pp-hero {
  padding: 36px 0 56px;
  background:
    radial-gradient(ellipse at 82% 12%, rgba(212, 175, 55, 0.16), transparent 44%),
    radial-gradient(ellipse at 8% 96%, rgba(213, 0, 28, 0.18), transparent 52%),
    linear-gradient(180deg, var(--m-black), var(--m-space));
  border-bottom: 3px solid var(--m-red);
}
.page-products .pp-hero__grid {
  display: grid;
  gap: 36px;
  align-items: center;
}
.page-products .pp-hero .m-lead {
  margin: 16px 0 0;
  color: var(--m-gray);
  line-height: 1.8;
}
.pp-hero__fact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}
.pp-hero__fact {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--m-font-mono);
  font-size: 0.82rem;
  color: var(--m-white);
  background: rgba(213, 0, 28, 0.16);
  border: 1px solid rgba(213, 0, 28, 0.5);
  padding: 8px 12px;
}
.pp-hero__fact::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--m-red);
  flex: 0 0 auto;
}
.pp-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 28px;
}

.pp-hero__board {
  position: relative;
  min-height: 300px;
  border: 3px solid var(--m-black);
  box-shadow: var(--m-shadow);
  background:
    linear-gradient(rgba(213, 0, 28, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(213, 0, 28, 0.12) 1px, transparent 1px),
    var(--m-space);
  background-size: 28px 28px;
  padding: 28px;
  transform: rotate(1.4deg);
}
.pp-hero__board-label {
  display: block;
  font-family: var(--m-font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--m-gray);
  text-transform: uppercase;
}
.pp-hero__board-num {
  position: absolute;
  right: 24px;
  top: 14px;
  font-family: var(--m-font-mono);
  font-size: clamp(4.5rem, 7vw, 7rem);
  font-weight: 900;
  line-height: 1;
  color: var(--m-red);
  opacity: 0.9;
}
.pp-hero__board-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 48px;
}
.pp-hero__board-tag {
  font-family: var(--m-font-mono);
  font-size: 0.9rem;
  color: var(--m-white);
  background: var(--m-black);
  border: 2px solid var(--m-gray);
  padding: 8px 12px;
  filter: drop-shadow(3px 3px 0 rgba(0, 0, 0, 0.35));
}
.pp-hero__board-tag:nth-child(odd) {
  transform: translateY(-4px);
  border-color: var(--m-gold);
  color: var(--m-gold);
}
.pp-hero__board-note {
  margin-top: 32px;
  padding-top: 16px;
  border-top: 1px dashed rgba(156, 163, 175, 0.4);
  font-family: var(--m-font-mono);
  font-size: 0.82rem;
  color: var(--m-gray);
  line-height: 1.7;
}

/* 技能树区 */
.pp-skill {
  padding: 56px 0 24px;
}
.pp-skill__head {
  text-align: center;
  margin-bottom: 44px;
}
.pp-skill__head .m-sticker {
  display: inline-block;
  margin-bottom: 12px;
}
.pp-skill__lead {
  max-width: 660px;
  margin: 12px auto 0;
  color: var(--m-gray);
  line-height: 1.75;
}

.pp-tree {
  margin: 0 auto;
  padding: 12px 0 40px;
}

/* 技能树行 */
.pp-tree__row {
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.pp-tree__row--split {
  gap: 36px;
}
.pp-tree__col {
  width: 100%;
}
.pp-tree__row--hero .pp-node {
  margin-inline: auto;
  width: 100%;
  max-width: var(--pp-node-max);
}

/* 节点卡片 */
.pp-node {
  position: relative;
  width: 100%;
  background:
    radial-gradient(circle at 92% 12%, rgba(213, 0, 28, 0.18), transparent 36%),
    var(--m-space);
  border: 3px solid var(--m-black);
  box-shadow: var(--m-shadow);
  padding: 32px 28px 28px;
  overflow: hidden;
}
.pp-node::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  background: var(--m-red);
  z-index: 2;
}
.pp-node--02::before {
  background: var(--m-green);
}
.pp-node--03::before {
  background: var(--m-gold);
}
.pp-node--04::before {
  background: var(--m-red);
}
.pp-node--05::before {
  background: var(--m-gold);
}
.pp-node::after {
  content: "";
  position: absolute;
  right: -48px;
  bottom: -48px;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(213, 0, 28, 0.14), transparent 70%);
  pointer-events: none;
}

.page-products .pp-node:hover {
  transform: translate(0, -4px);
  box-shadow: 8px 10px 0 rgba(0, 0, 0, 0.5);
  border-color: var(--m-gray);
}
.page-products .pp-node:hover .pp-node__sn {
  color: var(--m-red);
  opacity: 0.7;
}

.pp-node__sn {
  position: absolute;
  top: 24px;
  right: 28px;
  font-family: var(--m-font-mono);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--m-gray);
  opacity: 0.22;
  line-height: 1;
  z-index: 0;
  transition: color 0.25s ease, opacity 0.25s ease;
}
.pp-node__head {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding-right: 52px;
}
.page-products .pp-node__head .m-h3 {
  margin: 0;
}
.pp-node__txt {
  position: relative;
  z-index: 1;
  margin: 16px 0 18px;
  color: var(--m-gray);
  line-height: 1.75;
  font-size: 0.95rem;
}
.page-products .pp-node__txt a {
  color: var(--m-gold);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-products .pp-node__txt a:hover {
  color: var(--m-white);
}

/* 列表 */
.pp-node__steps,
.pp-node__list {
  position: relative;
  z-index: 1;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}
.pp-node__steps li {
  position: relative;
  padding-left: 30px;
  color: var(--m-white);
  font-size: 0.94rem;
  line-height: 1.6;
}
.pp-node__steps li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  width: 16px;
  height: 16px;
  border: 2px solid var(--m-gold);
  border-radius: 50%;
  background: var(--m-black);
}
.pp-node__steps li::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 10px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--m-red);
}
.pp-node__list li {
  position: relative;
  padding-left: 22px;
  color: var(--m-gray);
  font-size: 0.94rem;
  line-height: 1.6;
}
.pp-node__list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 8px;
  width: 10px;
  height: 10px;
  background: var(--m-red);
  transform: rotate(45deg);
}

/* 节点图片 */
.pp-node__img {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 2px solid var(--m-black);
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.4);
  margin-top: 18px;
}

/* 指标 */
.pp-node__metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin: 0 0 18px;
}
.pp-node__metric {
  background: rgba(245, 245, 245, 0.04);
  border: 1px solid rgba(245, 245, 245, 0.1);
  padding: 14px 16px;
}
.pp-node__metric-num {
  display: block;
  font-family: var(--m-font-mono);
  font-weight: 800;
  font-size: 1.4rem;
  color: var(--m-gold);
  line-height: 1.1;
}
.pp-node__metric-label {
  display: block;
  font-size: 0.8rem;
  color: var(--m-gray);
  margin-top: 6px;
  line-height: 1.5;
}

/* 热榜机制面板 */
.pp-node__hotlist {
  position: relative;
  z-index: 1;
  border: 1px solid rgba(212, 175, 55, 0.3);
  background: rgba(212, 175, 55, 0.05);
  margin-bottom: 18px;
  padding: 14px 16px;
}
.pp-node__hotlist-title {
  display: block;
  font-family: var(--m-font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--m-gold);
  margin-bottom: 10px;
}
.pp-node__hotlist-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  line-height: 1.5;
  padding: 6px 0;
  color: var(--m-white);
  border-bottom: 1px dashed rgba(156, 163, 175, 0.25);
}
.pp-node__hotlist-item:last-child {
  border-bottom: 0;
}
.pp-node__hotlist-label {
  font-family: var(--m-font-mono);
  font-size: 0.78rem;
  color: var(--m-gray);
  flex: 0 0 auto;
}
.pp-node__hotlist-bar {
  flex: 1;
  height: 8px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(245, 245, 245, 0.1);
  overflow: hidden;
}
.pp-node__hotlist-fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--m-red), var(--m-gold));
}

.pp-node__more {
  position: relative;
  z-index: 1;
  margin: 0 0 6px;
  font-size: 0.85rem;
  color: var(--m-gray);
}
.page-products .pp-node__more a {
  color: var(--m-gold);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 连接线 */
.pp-cable {
  position: relative;
  width: 100%;
  height: 32px;
  margin: 6px 0;
}
.pp-cable::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  width: 3px;
  height: 100%;
  background: var(--m-red);
  transform: translateX(-50%);
}
.pp-cable::after,
.pp-cable i {
  display: none;
}

/* 底部 CTA */
.pp-next {
  margin-top: 32px;
  padding: 56px 0 72px;
  background: var(--m-black);
  border-top: 3px solid var(--m-red);
  position: relative;
}
.pp-next::after {
  content: "";
  position: absolute;
  top: -3px;
  right: 8%;
  width: 160px;
  height: 3px;
  background: var(--m-gold);
}
.pp-next__grid {
  display: grid;
  gap: 28px;
}
.page-products .pp-next .m-h2 {
  margin: 0 0 8px;
}
.pp-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* 桌面端 */
@media (min-width: 900px) {
  .pp-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }
  .pp-hero {
    padding: 48px 0 64px;
  }

  .pp-tree__row--split {
    flex-direction: row;
    align-items: stretch;
    justify-content: center;
    gap: 40px;
  }
  .pp-tree__col {
    flex: 0 1 calc(50% - 20px);
    max-width: 560px;
  }
  .pp-tree__row--split .pp-tree__col:first-child .pp-node {
    transform: translateX(-6px);
  }
  .pp-tree__row--split .pp-tree__col:last-child .pp-node {
    transform: translateX(6px);
  }
  .page-products .pp-tree__row--split .pp-tree__col:first-child .pp-node:hover {
    transform: translate(-10px, -4px);
  }
  .page-products .pp-tree__row--split .pp-tree__col:last-child .pp-node:hover {
    transform: translate(10px, -4px);
  }

  .pp-cable {
    height: var(--pp-cable-h);
    margin: 8px auto;
    max-width: 1080px;
  }
  .pp-cable::before {
    height: 28px;
  }
  .pp-cable::after {
    display: block;
  }

  .pp-cable--fork::after {
    left: 25%;
    right: 25%;
    top: 28px;
    height: 3px;
    background: var(--m-red);
  }
  .pp-cable--fork i {
    display: block;
    position: absolute;
    top: 31px;
    width: 3px;
    height: calc(100% - 31px);
    background: var(--m-red);
  }
  .pp-cable--fork i:nth-child(1) {
    left: 25%;
  }
  .pp-cable--fork i:nth-child(2) {
    right: 25%;
  }

  .pp-cable--parallel::before {
    content: "";
    position: absolute;
    left: 25%;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--m-red);
  }
  .pp-cable--parallel::after {
    content: "";
    position: absolute;
    right: 25%;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--m-red);
  }
  .pp-cable--parallel i {
    display: none;
  }

  .pp-next__grid {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}