.page-products {
  --prod-rule: rgba(120, 180, 170, .16);
  --prod-rule-strong: rgba(120, 180, 170, .3);
}

/* ---------- 首屏 ---------- */
.page-products .page-head {
  padding-top: clamp(24px, 4vw, 48px);
}

.page-products .page-head .display-title {
  max-width: 18ch;
}

.page-products .page-head .lede {
  max-width: 62ch;
  margin-top: clamp(16px, 2.4vw, 24px);
  color: var(--slate-text);
}

.page-products .head-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-mid);
  border-left: 1px solid var(--line-soft);
}

.page-products .head-stats li {
  padding: 14px 16px 16px;
  border-right: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  min-width: 0;
}

.page-products .stat-num {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(20px, 2.6vw, 30px);
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--signal-cyan);
  line-height: 1.1;
}

.page-products .stat-label {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--slate-text);
  overflow-wrap: break-word;
}

/* ---------- 技能树主干 ---------- */
.page-products .tree-section {
  border-top: 1px solid var(--prod-rule);
}

.page-products .tree-intro {
  max-width: 60ch;
  margin: 0 0 clamp(20px, 3vw, 32px);
  color: var(--slate-text);
  font-size: 15px;
  line-height: 1.75;
}

.page-products .service-tree {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .service-tree::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 14px;
  bottom: 14px;
  width: 1px;
  background: linear-gradient(180deg, var(--signal-cyan), var(--cyan-mid) 40%, var(--prod-rule) 100%);
}

.page-products .tree-node {
  position: relative;
  padding-left: 48px;
}

.page-products .tree-link {
  display: block;
  padding: 16px 0;
  border-bottom: 1px solid var(--prod-rule);
  color: inherit;
  text-decoration: none;
  transition: border-color var(--t-fast) var(--ease);
}

.page-products .tree-link::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 24px;
  width: 13px;
  height: 13px;
  background: var(--pitch-void);
  border: 1px solid var(--signal-cyan);
  transform: rotate(45deg);
  transition: background var(--t-fast) var(--ease);
}

.page-products .tree-link:hover,
.page-products .tree-link:focus-visible {
  border-bottom-color: var(--signal-cyan);
}

.page-products .tree-link:hover::before,
.page-products .tree-link:focus-visible::before {
  background: var(--signal-cyan);
}

.page-products .tree-idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--amber-warm);
}

.page-products .tree-name {
  display: block;
  margin-top: 6px;
  font-family: var(--font-narrow);
  font-size: clamp(18px, 2.2vw, 24px);
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--chalk-white);
}

.page-products .tree-note {
  display: block;
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--slate-text);
}

/* ---------- 模块看板 ---------- */
.page-products .filter-bar {
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-products .module-board {
  display: grid;
  gap: clamp(22px, 3.4vw, 40px);
}

.page-products .module-card {
  position: relative;
  padding: clamp(20px, 3vw, 36px);
  background: var(--panel-paper);
  border: 1px solid var(--line-mid);
  transition: border-color var(--t-base) var(--ease), transform var(--t-base) var(--ease);
}

.page-products .module-card::after {
  content: "";
  position: absolute;
  left: -1px;
  top: 24px;
  width: 2px;
  height: 46px;
  background: var(--signal-cyan);
  opacity: .5;
  transition: opacity var(--t-base) var(--ease), height var(--t-base) var(--ease);
}

.page-products .module-card:hover {
  border-color: var(--cyan-mid);
  transform: translateY(-2px);
}

.page-products .module-card:hover::after {
  opacity: 1;
  height: 72px;
}

.page-products .module-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--prod-rule);
}

.page-products .module-idx {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--amber-warm);
}

.page-products .module-title {
  margin: 0;
  flex: 1 1 220px;
  font-family: var(--font-narrow);
  font-size: clamp(21px, 2.8vw, 30px);
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--chalk-white);
  line-height: 1.25;
}

.page-products .meter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-products .meter li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .02em;
  color: var(--chalk-white);
}

.page-products .meter li::before {
  content: "";
  width: 20px;
  height: 3px;
  flex: none;
  background: linear-gradient(90deg, var(--signal-cyan), rgba(79, 240, 196, .18));
}

.page-products .module-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2.6vw, 30px);
  margin-top: clamp(16px, 2.6vw, 26px);
}

.page-products .module-main {
  min-width: 0;
}

.page-products .module-main p {
  color: var(--chalk-white);
  opacity: .88;
}

.page-products .module-side {
  min-width: 0;
  padding-top: 14px;
  border-top: 1px solid var(--prod-rule);
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate-text);
}

.page-products .module-side p {
  margin: 0;
}

.page-products .module-card .media-frame {
  margin: clamp(20px, 3vw, 32px) 0 0;
}

.page-products .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  background: var(--turf-deep);
}

/* ---------- 数据指标条 ---------- */
.page-products .metric-list {
  display: grid;
  gap: 10px;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  list-style: none;
}

.page-products .metric {
  position: relative;
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr) 52px;
  align-items: center;
  gap: 10px;
  font-size: 13px;
}

.page-products .metric:focus-visible {
  outline: 1px solid var(--signal-cyan);
  outline-offset: 4px;
}

.page-products .metric-name {
  color: var(--slate-text);
  letter-spacing: .04em;
  white-space: nowrap;
}

.page-products .metric-track {
  position: relative;
  display: block;
  height: 6px;
  background: rgba(120, 180, 170, .14);
  overflow: hidden;
}

.page-products .metric-fill {
  position: absolute;
  inset: 0 auto 0 0;
  display: block;
  background: linear-gradient(90deg, var(--signal-cyan), rgba(79, 240, 196, .35));
}

.page-products .metric-val {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  color: var(--chalk-white);
  text-align: right;
}

.page-products .metric-hint {
  position: absolute;
  left: 0;
  bottom: calc(100% + 8px);
  z-index: 4;
  width: max-content;
  max-width: min(280px, 80vw);
  padding: 7px 11px;
  background: var(--turf-deep);
  border: 1px solid var(--cyan-mid);
  color: var(--chalk-white);
  font-size: 12px;
  line-height: 1.55;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--t-fast) var(--ease), visibility var(--t-fast) var(--ease);
}

.page-products .metric:hover .metric-hint,
.page-products .metric:focus-within .metric-hint {
  opacity: 1;
  visibility: visible;
}

/* ---------- 收藏展开步骤 ---------- */
.page-products .fav-steps {
  margin: 0;
  border: 1px solid var(--prod-rule);
  background: rgba(11, 43, 35, .4);
}

.page-products .fav-steps summary {
  padding: 11px 14px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--signal-cyan);
}

.page-products .fav-steps summary::-webkit-details-marker {
  display: none;
}

.page-products .fav-steps summary::before {
  content: "＋ ";
  color: var(--amber-warm);
}

.page-products .fav-steps[open] summary::before {
  content: "－ ";
}

.page-products .fav-steps ol {
  margin: 0;
  padding: 0 14px 14px 30px;
  color: var(--slate-text);
  font-size: 13.5px;
  line-height: 1.75;
}

.page-products .fav-steps li + li {
  margin-top: 6px;
}

/* ---------- 苹果电脑端 ---------- */
.page-products .apple-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 40px);
  align-items: start;
}

.page-products .apple-main p {
  color: var(--chalk-white);
  opacity: .88;
}

.page-products .apple-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-mid);
}

.page-products .apple-list li {
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr);
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--prod-rule);
  font-size: 14px;
  line-height: 1.6;
}

.page-products .apple-key {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--amber-warm);
  padding-top: 2px;
}

.page-products .apple-val {
  color: var(--slate-text);
}

.page-products .key-hint {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 18px;
}

.page-products .key {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: 1px solid var(--line-mid);
  background: var(--panel-paper);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--slate-text);
  transition: border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}

.page-products .key:hover {
  border-color: var(--signal-cyan);
  color: var(--pitch-void);
  background: var(--signal-cyan);
}

.page-products .apple-layout + .media-frame,
.page-products .apple-layout ~ .media-frame {
  margin-top: clamp(24px, 3.4vw, 40px);
}

/* ---------- 步骤 ---------- */
.page-products .steps {
  counter-reset: step;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-mid);
}

.page-products .step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding: clamp(16px, 2.4vw, 24px) 0;
  border-bottom: 1px solid var(--prod-rule);
}

.page-products .step-num::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--signal-cyan);
  padding-top: 3px;
}

.page-products .step-title {
  margin: 0 0 6px;
  font-family: var(--font-narrow);
  font-size: clamp(16px, 1.9vw, 19px);
  font-weight: 700;
  letter-spacing: -.005em;
  color: var(--chalk-white);
}

.page-products .step-body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--slate-text);
}

/* ---------- 延伸入口 ---------- */
.page-products .link-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  border: 1px solid var(--line-mid);
  background: var(--prod-rule);
}

.page-products .link-grid a {
  display: block;
  padding: clamp(18px, 2.6vw, 26px);
  background: var(--panel-paper);
  color: inherit;
  text-decoration: none;
  transition: background var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
  border-left: 2px solid transparent;
}

.page-products .link-grid a:hover,
.page-products .link-grid a:focus-visible {
  background: var(--turf-deep);
  border-left-color: var(--signal-cyan);
}

.page-products .link-grid__label {
  display: block;
  font-family: var(--font-narrow);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -.005em;
  color: var(--chalk-white);
}

.page-products .link-grid__note {
  display: block;
  margin-top: 8px;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--slate-text);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-products .head-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-products .head-stats {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-products .tree-link {
    display: grid;
    grid-template-columns: 56px minmax(0, 1fr) minmax(0, 1.15fr);
    align-items: baseline;
    gap: 20px;
    padding: 22px 0;
  }

  .page-products .tree-name,
  .page-products .tree-note {
    margin-top: 0;
  }

  .page-products .module-body {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  }

  .page-products .module-card--flip .module-body {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr);
  }

  .page-products .module-card--flip .module-main {
    order: 2;
  }

  .page-products .module-card--flip .module-side {
    order: 1;
  }

  .page-products .module-side {
    border-top: 0;
    border-left: 1px solid var(--prod-rule);
    padding-top: 0;
    padding-left: 20px;
  }

  .page-products .module-card--flip .module-side {
    border-left: 0;
    border-right: 1px solid var(--prod-rule);
    padding-left: 0;
    padding-right: 20px;
  }

  .page-products .apple-layout {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  }

  .page-products .metric {
    grid-template-columns: 92px minmax(0, 1fr) 60px;
  }
}

@media (min-width: 1080px) {
  .page-products .link-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .step {
    grid-template-columns: 64px minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .module-card,
  .page-products .module-card::after,
  .page-products .tree-link,
  .page-products .tree-link::before,
  .page-products .metric-hint,
  .page-products .key,
  .page-products .link-grid a {
    transition: none;
  }

  .page-products .module-card:hover {
    transform: none;
  }
}
</main>