.page-products {
  --pp-gold: #C9A227;
  --pp-gold-bright: #E3BE45;
  --pp-red: #8B1A1A;
  --pp-blue: #1B3A5C;
  --pp-purple: #5B2C8E;
  --pp-black: #0B0B0F;
  --pp-paper: #F5F0E8;
  --pp-line: rgba(245, 240, 232, 0.08);
  --pp-gold-dim: rgba(201, 162, 39, 0.35);
  background: var(--pp-black);
  color: var(--pp-paper);
}

/* ========== 页面引言 ========== */
.page-products .products-hero {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(139, 26, 26, 0.28) 0%, transparent 42%),
    radial-gradient(circle at 82% 18%, rgba(91, 44, 142, 0.22), transparent 42%);
  border-bottom: 1px solid var(--pp-line);
}

.page-products .products-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--pp-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--pp-line) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
  opacity: 0.5;
}

.page-products .products-hero .container {
  position: relative;
  z-index: 1;
}

.page-products .breadcrumb {
  padding-top: 24px;
}

.page-products .page-subtitle {
  color: var(--pp-gold);
  font-size: 0.8rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  margin: 0 0 8px;
}

.page-products .page-title {
  font-family: var(--font-head);
  font-size: clamp(2.6rem, 8vw, 4.6rem);
  line-height: 1.05;
  margin: 0 0 18px;
  letter-spacing: 0.02em;
}

.page-products .hero-grid {
  display: grid;
  gap: 32px;
  padding: 24px 0 48px;
}

.page-products .hero-lead {
  max-width: 720px;
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--c-gray);
  margin: 0;
  border-left: 2px solid var(--pp-gold);
  padding-left: 18px;
}

.page-products .hero-badge {
  position: relative;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 22px;
  border: 1px solid var(--pp-gold-dim);
  background: linear-gradient(135deg, rgba(201, 162, 39, 0.12), rgba(11, 11, 15, 0.3));
  transform: skewX(-4deg);
}

.page-products .hero-badge > * {
  transform: skewX(4deg);
}

.page-products .badge-char {
  display: grid;
  place-items: center;
  width: 60px;
  height: 60px;
  flex: 0 0 60px;
  background: var(--pp-red);
  color: var(--pp-paper);
  font-family: var(--font-head);
  font-size: 1.9rem;
  border: 1px solid var(--pp-gold-dim);
}

.page-products .badge-copy {
  display: grid;
  gap: 2px;
}

.page-products .badge-kicker {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--pp-gold);
}

.page-products .badge-copy strong {
  font-family: var(--font-head);
  font-size: 1.6rem;
  color: var(--pp-paper);
  line-height: 1.1;
}

.page-products .badge-copy span:last-child {
  color: var(--c-gray);
  font-size: 0.85rem;
}

/* ========== 技能树主区域 ========== */
.page-products .skill-tree-section {
  padding: 48px 0 24px;
}

.page-products .section-index {
  position: relative;
  margin-bottom: 16px;
}

.page-products .section-index-desc {
  max-width: 680px;
  color: var(--c-gray);
  font-size: 0.95rem;
  line-height: 1.75;
  margin: 12px 0 0;
}

.page-products .skill-tree {
  position: relative;
  display: grid;
  gap: 40px;
  padding: 40px 0 48px;
}

.page-products .skill-tree-lines {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.85;
}

.page-products .tree-path {
  fill: none;
  stroke: rgba(201, 162, 39, 0.4);
  stroke-width: 2;
  stroke-dasharray: 8 10;
  vector-effect: non-scaling-stroke;
}

.page-products .tree-path-ghost {
  stroke: rgba(91, 44, 142, 0.35);
  stroke-width: 1.2;
}

.page-products .tree-diamond {
  fill: var(--pp-gold);
  vector-effect: non-scaling-stroke;
}

.page-products .tree-ring {
  fill: none;
  stroke: rgba(201, 162, 39, 0.5);
  stroke-width: 1.5;
  stroke-dasharray: 3 6;
  vector-effect: non-scaling-stroke;
}

/* ========== 技能节点卡片 ========== */
.page-products .skill-node {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  background: rgba(11, 11, 15, 0.88);
  border: 1px solid var(--c-silver);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
  transition: border-color 200ms ease, box-shadow 200ms ease;
}

.page-products .skill-node:hover,
.page-products .skill-node:focus-within {
  border-color: var(--pp-gold-dim);
  box-shadow: 0 0 0 1px rgba(201, 162, 39, 0.25), 0 14px 44px rgba(0, 0, 0, 0.5);
}

.page-products .node-media {
  overflow: hidden;
  border-bottom: 1px solid var(--pp-gold-dim);
  background:
    linear-gradient(var(--pp-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--pp-line) 1px, transparent 1px);
  background-size: 32px 32px;
}

.page-products .node-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 8 / 5;
  object-fit: cover;
}

.page-products .skill-node-3 .node-media img {
  aspect-ratio: 8 / 3;
}

.page-products .skill-node-5 .node-media img {
  aspect-ratio: 3 / 2;
}

.page-products .node-body {
  padding: 24px;
}

.page-products .node-index {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--pp-gold);
  border-bottom: 1px solid var(--pp-gold-dim);
  padding-bottom: 6px;
  margin-bottom: 10px;
}

.page-products .node-body h3 {
  font-family: var(--font-head);
  font-size: 1.5rem;
  margin: 0 0 10px;
  line-height: 1.3;
}

.page-products .node-summary {
  color: var(--c-gray);
  font-size: 0.95rem;
  line-height: 1.75;
  margin: 0;
}

.page-products .node-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 20px 0 0;
  padding: 16px 0;
  border-top: 1px solid var(--pp-line);
  border-bottom: 1px solid var(--pp-line);
}

.page-products .node-stats div {
  min-width: 0;
}

.page-products .node-stats dt {
  font-size: 0.75rem;
  color: var(--c-gray);
  margin-bottom: 4px;
  letter-spacing: 0.06em;
}

.page-products .node-stats dd {
  font-family: var(--font-head);
  font-size: 1.3rem;
  color: var(--pp-gold-bright);
  margin: 0;
  line-height: 1.2;
  white-space: nowrap;
}

.page-products .accordion-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  margin-top: 18px;
  padding: 12px 16px;
  background: transparent;
  border: 1px solid var(--pp-gold-dim);
  color: var(--pp-gold);
  font-family: var(--font-body);
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: border-color 200ms ease, background-color 200ms ease;
}

.page-products .accordion-toggle:hover,
.page-products .accordion-toggle:focus-visible {
  border-color: var(--pp-gold);
  background: rgba(201, 162, 39, 0.06);
  outline: none;
}

.page-products .toggle-arrow {
  display: inline-block;
  font-size: 1.1rem;
  line-height: 1;
  transition: transform 200ms ease;
}

.page-products .accordion-toggle[aria-expanded="true"] .toggle-arrow {
  transform: rotate(45deg);
}

.page-products .accordion-panel {
  padding-top: 4px;
}

.page-products .node-feature-list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .node-feature-list li {
  position: relative;
  padding-left: 18px;
  color: var(--pp-paper);
  font-size: 0.92rem;
  line-height: 1.65;
}

.page-products .node-feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 6px;
  height: 6px;
  background: var(--pp-gold);
  transform: rotate(45deg);
}

.page-products .node-usage {
  margin: 16px 0 0;
  padding: 14px 16px;
  border-left: 2px solid var(--pp-gold);
  background: linear-gradient(90deg, rgba(201, 162, 39, 0.08), transparent);
  color: var(--c-gray);
  font-size: 0.88rem;
  line-height: 1.7;
}

/* ========== 数据快照与标签页 ========== */
.page-products .snapshot-section {
  padding: 48px 0;
  border-top: 1px solid var(--pp-line);
  border-bottom: 1px solid var(--pp-line);
  background:
    linear-gradient(180deg, rgba(27, 58, 92, 0.16), transparent 70%),
    radial-gradient(circle at 20% 0%, rgba(91, 44, 142, 0.08), transparent 60%);
}

.page-products .tabs {
  margin-top: 24px;
}

.page-products .tab-list {
  display: flex;
  flex-wrap: nowrap;
  gap: 0;
  border-bottom: 1px solid var(--c-silver);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-products .tab-button {
  flex: 0 0 auto;
  padding: 14px 22px;
  background: transparent;
  border: 1px solid transparent;
  border-bottom: none;
  color: var(--c-gray);
  font-family: var(--font-body);
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  cursor: pointer;
  position: relative;
  transition: color 200ms ease;
}

.page-products .tab-button:hover {
  color: var(--pp-gold-bright);
}

.page-products .tab-button:focus-visible {
  outline: 1px solid var(--pp-gold);
  outline-offset: -1px;
}

.page-products .tab-button[aria-selected="true"] {
  color: var(--pp-paper);
  border-color: var(--pp-gold);
  border-bottom-color: transparent;
  background: rgba(201, 162, 39, 0.08);
  margin-bottom: -1px;
}

.page-products .tab-panel {
  padding: 24px 0;
}

.page-products .panel-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-head);
  font-size: 1.1rem;
  margin: 0 0 16px;
}

.page-products .panel-title::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--pp-gold);
  transform: rotate(45deg);
  flex: 0 0 8px;
}

.page-products .data-strip {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--pp-line);
  border: 1px solid var(--pp-line);
}

.page-products .data-strip-item {
  background: rgba(11, 11, 15, 0.72);
  padding: 18px 16px;
  min-width: 0;
}

.page-products .data-strip-item .data-label {
  display: block;
  font-size: 0.78rem;
  color: var(--c-gray);
  letter-spacing: 0.1em;
  margin-bottom: 6px;
}

.page-products .data-strip-item .data-value {
  font-family: var(--font-head);
  font-size: 1.7rem;
  color: var(--pp-gold-bright);
  line-height: 1.1;
}

.page-products .tab-note {
  margin: 20px 0 0;
  padding: 14px 16px;
  border-left: 2px solid var(--pp-purple);
  background: rgba(91, 44, 142, 0.08);
  color: var(--pp-paper);
  font-size: 0.9rem;
  line-height: 1.7;
}

.page-products .timeline-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-products .timeline-list li {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 16px;
  padding: 14px 16px;
  border: 1px solid var(--pp-line);
  background: rgba(11, 11, 15, 0.45);
}

.page-products .timeline-num {
  font-family: var(--font-head);
  font-size: 1.6rem;
  color: var(--pp-gold);
  line-height: 1;
}

.page-products .timeline-list p {
  margin: 0;
  color: var(--c-gray);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* ========== 操作流程 ========== */
.page-products .usage-section {
  padding: 56px 0 48px;
}

.page-products .usage-steps {
  counter-reset: usage;
  display: grid;
  gap: 16px;
  margin-top: 28px;
}

.page-products .usage-step {
  counter-increment: usage;
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 16px;
  padding: 20px;
  border: 1px solid var(--pp-line);
  background: rgba(11, 11, 15, 0.5);
  position: relative;
}

.page-products .usage-step::before {
  content: counter(usage, decimal-leading-zero);
  font-family: var(--font-head);
  font-size: 1.6rem;
  color: var(--pp-purple);
  line-height: 1;
}

.page-products .usage-step h3 {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 1.1rem;
  color: var(--pp-paper);
}

.page-products .usage-step p {
  margin: 0;
  color: var(--c-gray);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* ========== 关联导航 ========== */
.page-products .next-section {
  padding: 32px 0 48px;
  border-top: 1px solid var(--pp-line);
}

.page-products .next-title {
  margin: 0 0 20px;
  text-align: center;
  color: var(--c-gray);
  font-size: 0.85rem;
  letter-spacing: 0.22em;
}

.page-products .next-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

.page-products .next-links a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  border: 1px solid var(--pp-gold-dim);
  background: rgba(201, 162, 39, 0.04);
  color: var(--pp-gold);
  font-size: 0.9rem;
  text-decoration: none;
  transition: border-color 200ms ease, background-color 200ms ease;
}

.page-products .next-links a::after {
  content: "→";
  color: var(--pp-gold);
  transition: transform 200ms ease;
}

.page-products .next-links a:hover,
.page-products .next-links a:focus-visible {
  border-color: var(--pp-gold);
  background: rgba(201, 162, 39, 0.1);
  outline: none;
}

.page-products .next-links a:hover::after {
  transform: translateX(3px);
}

/* ========== 桌面端断点 ========== */
@media (min-width: 960px) {
  .page-products .hero-grid {
    grid-template-columns: minmax(0, 1fr) 300px;
    align-items: end;
    padding: 48px 0 64px;
  }

  .page-products .skill-tree {
    grid-template-columns: 1fr 1fr;
    column-gap: 64px;
    row-gap: 56px;
  }

  .page-products .skill-node-1 {
    grid-column: 1;
    grid-row: 1;
  }

  .page-products .skill-node-2 {
    grid-column: 2;
    grid-row: 1;
    margin-top: 112px;
  }

  .page-products .skill-node-3 {
    grid-column: 1;
    grid-row: 2;
    margin-top: -48px;
  }

  .page-products .skill-node-4 {
    grid-column: 2;
    grid-row: 2;
    margin-top: 64px;
  }

  .page-products .skill-node-5 {
    grid-column: 1 / -1;
    grid-row: 3;
    margin-top: -96px;
    justify-self: center;
    width: min(620px, 85%);
  }

  .page-products .data-strip {
    grid-template-columns: repeat(5, 1fr);
  }

  .page-products .usage-steps {
    grid-template-columns: 1fr 1fr;
  }

  .page-products .usage-step:last-child {
    grid-column: 1 / -1;
  }
}