/* ===== page-products 专属样式 ===== */
.page-products {
  --page-pad: var(--space-lg);
  --node-size: 180px;
  --border-radius-sm: 4px;
  --skill-bg: rgba(26,45,74,0.04);
  --skill-hover-bg: rgba(26,45,74,0.08);
  /* 边框颜色变量由 frame-box 各变体提供 */
}

/* 面包屑 */
.page-products .breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) 0 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-silver);
  max-width: var(--max-width);
  margin: 0 auto;
  width: calc(100% - 2 * var(--page-pad));
}
.page-products .breadcrumb a {
  color: var(--color-deep-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.page-products .breadcrumb a:hover,
.page-products .breadcrumb a:focus-visible {
  color: var(--color-gold);
}
.page-products .breadcrumb-sep {
  color: var(--color-silver);
  font-size: 0.7rem;
}
.page-products .breadcrumb-current {
  color: var(--color-dark-brown);
  font-weight: 600;
}
.page-products .visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0,0,0,0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* ===== 服务区块通用 ===== */
.page-products .service-block {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-xl) var(--page-pad);
}

/* ===== 框景容器变体 ===== */
.page-products .frame-box {
  background: var(--color-cream);
  border-width: var(--border-thick);
  border-style: solid;
  box-shadow: var(--shadow-heavy);
  padding: var(--space-lg);
  transition: box-shadow var(--transition-slow), border-color var(--transition-fast);
}
.page-products .frame-box:hover {
  box-shadow: 10px 10px 0 rgba(44,30,19,0.2);
}
.page-products .frame-box:focus-within {
  border-color: var(--color-red) !important;
}
.page-products .border-gold {
  border-color: var(--color-gold);
}
.page-products .border-deep-blue {
  border-color: var(--color-deep-blue);
}
.page-products .border-silver {
  border-color: var(--color-silver);
}

/* ===== 章节标题 ===== */
.page-products .chapter-header {
  display: flex;
  align-items: baseline;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  border-bottom: 3px solid var(--color-dark-brown);
  padding-bottom: var(--space-sm);
}
.page-products .chapter-number {
  font-size: 2.8rem;
  line-height: 1;
  color: var(--color-red);
  font-weight: 700;
  letter-spacing: -0.02em;
}
.page-products .chapter-title {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-dark-brown);
  margin: 0;
  text-transform: uppercase;
}

/* ===== 服务总览：技能树 ===== */
.page-products .overview-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}
.page-products .skill-tree-wrapper {
  width: 100%;
}
.page-products .skill-tree {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  min-height: 320px;
}
.page-products .tree-lines {
  display: none;
}
.page-products .skill-node {
  width: 100%;
  max-width: 400px;
  background: var(--skill-bg);
  border-left: 5px solid var(--color-gold);
  border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}
.page-products .skill-node:hover,
.page-products .skill-node:focus-within {
  background: var(--skill-hover-bg);
  border-left-color: var(--color-red);
}
.page-products .skill-label {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  cursor: pointer;
  font-size: 1rem;
  list-style: none;
  user-select: none;
}
.page-products .skill-label::-webkit-details-marker {
  display: none;
}
.page-products .skill-label::before {
  content: "▶";
  font-size: 0.7rem;
  color: var(--color-gold);
  transition: transform var(--transition-fast);
  margin-right: var(--space-xs);
}
.page-products .skill-node[open] > .skill-label::before {
  transform: rotate(90deg);
}
.page-products .skill-num {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-deep-blue);
  min-width: 2ch;
}
.page-products .skill-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-dark-brown);
}
.page-products .skill-desc {
  padding: 0 var(--space-md) var(--space-sm) calc(2ch + var(--space-xl));
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--color-dark-brown);
}
.page-products .skill-desc p {
  margin: 0;
}

/* 技能树桌面端覆盖为网格 */
.page-products .overview-figure {
  order: -1;
}
.page-products .overview-img {
  width: 100%;
  height: auto;
  max-width: 600px;
  display: block;
  margin: 0 auto;
  border: 3px solid var(--color-silver);
  box-shadow: var(--shadow-medium);
}
.page-products .overview-summary {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-dark-brown);
  max-width: 720px;
  margin: 0 auto var(--space-lg);
  text-align: center;
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-silver);
}
.page-products .service-quick-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  justify-content: center;
}
.page-products .quick-link {
  display: inline-block;
  padding: var(--space-xs) var(--space-md);
  border: 2px solid var(--color-deep-blue);
  color: var(--color-deep-blue);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  transition: all var(--transition-fast);
  border-radius: var(--border-radius-sm);
}
.page-products .quick-link:hover,
.page-products .quick-link:focus-visible {
  border-color: var(--color-gold);
  color: var(--color-gold);
  transform: scale(1.04);
}

/* ===== 服务详情通用 ===== */
.page-products .service-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  align-items: start;
}
.page-products .service-text {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-dark-brown);
}
.page-products .service-text p {
  margin: 0 0 var(--space-md);
}
.page-products .service-features {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-md);
}
.page-products .service-features li {
  position: relative;
  padding-left: 1.6rem;
  margin-bottom: var(--space-sm);
}
.page-products .service-features li::before {
  content: "▹";
  position: absolute;
  left: 0;
  color: var(--color-red);
  font-weight: 700;
}
.page-products .service-figure {
  width: 100%;
}
.page-products .service-img {
  width: 100%;
  height: auto;
  display: block;
  border: 3px solid var(--color-silver);
  box-shadow: var(--shadow-medium);
  transition: transform var(--transition-slow), box-shadow var(--transition-slow);
}
.page-products .service-img:hover {
  transform: scale(1.01);
  box-shadow: var(--shadow-heavy);
}

/* ===== details 展开组件 ===== */
.page-products .feature-detail {
  border: 1px dashed var(--color-silver);
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}
.page-products .feature-detail:hover {
  border-color: var(--color-gold);
}
.page-products .detail-summary {
  padding: var(--space-sm) var(--space-md);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-deep-blue);
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: background var(--transition-fast);
}
.page-products .detail-summary::-webkit-details-marker {
  display: none;
}
.page-products .detail-summary::before {
  content: "⊕ ";
  color: var(--color-gold);
  font-weight: 700;
}
.page-products .feature-detail[open] .detail-summary::before {
  content: "⊖ ";
}
.page-products .detail-summary:hover {
  background: var(--skill-bg);
}
.page-products .detail-body {
  padding: 0 var(--space-md) var(--space-md);
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--color-dark-brown);
}
.page-products .detail-body p {
  margin: 0 0 var(--space-sm);
}
.page-products .btn-outline {
  display: inline-block;
  padding: var(--space-xs) var(--space-md);
  border: 2px solid var(--color-dark-brown);
  color: var(--color-dark-brown);
  background: transparent;
  text-decoration: none;
  font-size: 0.8rem;
  font-weight: 600;
  transition: all var(--transition-fast);
  border-radius: var(--border-radius-sm);
}
.page-products .btn-outline:hover,
.page-products .btn-outline:focus-visible {
  background: var(--color-dark-brown);
  color: var(--color-cream);
  border-color: var(--color-dark-brown);
}

/* ===== 信任声明 ===== */
.page-products .trust-note {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-md) var(--page-pad) var(--space-xl);
  font-size: 0.8rem;
  color: var(--color-silver);
  text-align: center;
  line-height: 1.6;
}
.page-products .trust-note p {
  margin: 0;
}

/* ===== 桌面端 ≥768px ===== */
@media (min-width: 768px) {
  .page-products {
    --page-pad: var(--space-xl);
  }

  /* 服务总览：技能树采用网格布局+SVG连线 */
  .page-products .overview-grid {
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: var(--space-xl);
  }
  .page-products .overview-figure {
    order: 0;
  }
  .page-products .skill-tree {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    align-items: flex-start;
    gap: var(--space-sm);
    padding: var(--space-md);
    min-height: 0;
    position: relative;
  }
  .page-products .tree-lines {
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
  }
  .page-products .skill-node {
    width: calc(50% - var(--space-sm));
    max-width: 220px;
    position: relative;
    z-index: 2;
    flex-shrink: 0;
  }
  .page-products .skill-node[data-skill="version"] {
    border-left-color: var(--color-deep-blue);
  }
  .page-products .skill-node[data-skill="league"] {
    border-left-color: var(--color-gold);
  }
  .page-products .skill-node[data-skill="preview"] {
    border-left-color: var(--color-silver);
  }
  .page-products .skill-node[data-skill="history"] {
    border-left-color: var(--color-deep-blue);
  }
  .page-products .skill-node[data-skill="replay"] {
    border-left-color: var(--color-red);
  }

  /* 服务内容双栏布局交替 */
  .page-products .version-layout {
    grid-template-columns: 3fr 2fr;
  }
  .page-products .league-layout {
    grid-template-columns: 2fr 3fr;
    direction: rtl;
  }
  .page-products .league-layout > * {
    direction: ltr;
  }
  .page-products .replay-layout {
    grid-template-columns: 3fr 2fr;
  }
  .page-products .sync-layout {
    grid-template-columns: 2fr 3fr;
    direction: rtl;
  }
  .page-products .sync-layout > * {
    direction: ltr;
  }

  .page-products .service-text {
    font-size: 1rem;
  }
  .page-products .service-text p {
    font-size: 1rem;
  }
  .page-products .chapter-number {
    font-size: 3.5rem;
  }
  .page-products .chapter-title {
    font-size: 2rem;
  }
  .page-products .frame-box {
    padding: var(--space-xl);
  }

  .page-products .skill-label {
    font-size: 0.9rem;
    padding: var(--space-xs) var(--space-sm);
  }
  .page-products .skill-num {
    font-size: 1.2rem;
  }
  .page-products .skill-name {
    font-size: 0.95rem;
  }
  .page-products .skill-desc {
    font-size: 0.82rem;
    padding-left: var(--space-md);
    padding-right: var(--space-sm);
  }

  /* 服务快速链接卡片化 */
  .page-products .service-quick-links {
    gap: var(--space-lg);
  }
  .page-products .quick-link {
    font-size: 0.9rem;
    padding: var(--space-sm) var(--space-lg);
  }
}

/* ===== 大屏 ≥1024px ===== */
@media (min-width: 1024px) {
  .page-products .service-block {
    padding: var(--space-2xl) var(--page-pad);
  }
  .page-products .overview-grid {
    gap: var(--space-2xl);
  }
  .page-products .frame-box {
    padding: var(--space-2xl);
  }
  .page-products .skill-node {
    width: 180px;
    max-width: 180px;
  }
  .page-products .skill-label {
    font-size: 0.95rem;
  }
  .page-products .skill-name {
    font-size: 1rem;
  }
  .page-products .chapter-number {
    font-size: 4.2rem;
  }
  .page-products .chapter-title {
    font-size: 2.2rem;
  }
}

/* ===== 移动端微调 <768px ===== */
@media (max-width: 767px) {
  .page-products .service-block {
    padding: var(--space-lg) var(--space-md);
  }
  .page-products .frame-box {
    padding: var(--space-md);
    border-width: 4px;
  }
  .page-products .chapter-number {
    font-size: 2.2rem;
  }
  .page-products .chapter-title {
    font-size: 1.3rem;
  }
  .page-products .service-features li {
    padding-left: 1.3rem;
    font-size: 0.9rem;
  }
  .page-products .overview-img {
    max-width: 100%;
  }
  .page-products .service-img {
    max-width: 100%;
  }
  .page-products .quick-link {
    font-size: 0.8rem;
    padding: var(--space-xs) var(--space-sm);
  }
  .page-products .skill-node {
    border-left-width: 4px;
  }
  .page-products .skill-label {
    font-size: 0.9rem;
    padding: var(--space-xs) var(--space-sm);
  }
  .page-products .skill-num {
    font-size: 1.1rem;
  }
  .page-products .skill-name {
    font-size: 0.95rem;
  }
  .page-products .detail-body {
    font-size: 0.82rem;
  }
  .page-products .breadcrumb {
    padding: var(--space-sm) var(--space-md) 0;
    font-size: 0.75rem;
    width: 100%;
  }
  .page-products .trust-note {
    padding: var(--space-sm) var(--space-md) var(--space-lg);
    font-size: 0.75rem;
  }
}