.page-products {
  --pp-axis: rgba(109, 124, 142, 0.34);
  --pp-rail-w: 172px;
  --pp-gold-wash: rgba(199, 154, 78, 0.14);
  --pp-slant: rgba(16, 32, 58, 0.05);
  padding-bottom: 88px;
}

.page-products [id] {
  scroll-margin-top: 104px;
}

.page-products .breadcrumbs {
  margin: 20px 0 6px;
}

/* ---------- 首屏 ---------- */

.page-products .prod-hero {
  display: grid;
  gap: 30px;
  padding: 18px 0 52px;
  border-bottom: 1px solid var(--pp-axis);
}

.page-products .prod-hero-kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--sand-gold);
}

.page-products .prod-hero h1 {
  margin: 0 0 20px;
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: clamp(34px, 7.6vw, 64px);
  line-height: 1.14;
  letter-spacing: 0.005em;
  color: var(--ink-black);
}

.page-products .prod-hero .lede {
  margin: 0 0 26px;
  max-width: 34em;
  font-size: var(--fs-18);
  line-height: 1.78;
  color: var(--ink-grey);
}

.page-products .prod-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-products .prod-hero-visual {
  margin: 0;
}

.page-products .pp-frame {
  position: relative;
  overflow: hidden;
  margin: 0;
  background: var(--sand);
  border: 1px solid var(--pp-axis);
}

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

.page-products .pp-frame--16x9 { aspect-ratio: 16 / 9; }
.page-products .pp-frame--14x9 { aspect-ratio: 14 / 9; }
.page-products .pp-frame--2x1 { aspect-ratio: 2 / 1; }
.page-products .pp-frame--1x1 { aspect-ratio: 1 / 1; }

.page-products .pp-figure {
  margin-top: 36px;
}

.page-products .pp-cap {
  padding: 10px 14px;
  font-size: var(--fs-14);
  line-height: 1.6;
  color: var(--ink-grey);
  border-top: 1px solid var(--pp-axis);
}

/* ---------- 章节通用 ---------- */

.page-products .section {
  padding: 56px 0 8px;
}

.page-products .pp-intro {
  max-width: 40em;
  margin: 0 0 28px;
  font-size: var(--fs-16);
  line-height: 1.78;
  color: var(--ink-grey);
}

.page-products .section-head .chapter-no {
  color: var(--sand-gold);
}

.page-products .pp-callout {
  margin: 30px 0 0;
  padding: 18px 20px;
  background: var(--sand);
  border-left: 3px solid var(--sand-gold);
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--ink-blue);
}

/* ---------- 01 路径卡片 ---------- */

.page-products .path-grid {
  display: grid;
  gap: 18px;
}

.page-products .path-card {
  position: relative;
  padding: 26px 22px 24px;
  background: var(--paper);
  border: 1px solid var(--pp-axis);
  transition: border-color 0.18s var(--ease), transform 0.18s var(--ease);
}

.page-products .path-card::after {
  content: "";
  position: absolute;
  top: -1px;
  right: -1px;
  width: 16px;
  height: 16px;
  background: var(--bg);
  border-left: 1px solid var(--pp-axis);
  border-bottom: 1px solid var(--pp-axis);
}

.page-products .path-card:hover {
  border-color: var(--sand-gold);
  transform: translateY(-2px);
}

.page-products .path-no {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 48px;
  line-height: 1;
  color: var(--sand-gold);
}

.page-products .path-card h3 {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: var(--fs-24);
  line-height: 1.36;
  color: var(--ink-black);
}

.page-products .path-card p {
  margin: 0 0 12px;
  font-size: var(--fs-16);
  line-height: 1.76;
  color: var(--ink-grey);
}

.page-products .path-hint {
  margin: 0;
  padding-top: 12px;
  border-top: 1px dashed var(--pp-axis);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--press-blue);
}

/* ---------- 02 归档 ---------- */

.page-products .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 32px 0 18px;
}

.page-products .filter-chip {
  display: inline-block;
  padding: 7px 15px;
  font-size: var(--fs-14);
  letter-spacing: 0.04em;
  color: var(--press-blue);
  text-decoration: none;
  background: transparent;
  border: 1px solid var(--pp-axis);
  border-radius: 999px;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-products .filter-chip:hover {
  color: var(--ink-blue);
  border-color: var(--sand-gold);
}

.page-products .filter-chip[href="#f-all"] {
  color: var(--ink-blue);
  background: var(--sand-gold);
  border-color: var(--sand-gold);
}

.page-products .filter-chip:target {
  color: var(--ink-blue);
  background: var(--sand-gold);
  border-color: var(--sand-gold);
}

.page-products .filter-bar:has(.filter-chip:target) .filter-chip[href="#f-all"]:not(:target) {
  color: var(--press-blue);
  background: transparent;
  border-color: var(--pp-axis);
}

.page-products:has(#f-quota:target) .rec-row:not(.is-quota),
.page-products:has(#f-rule:target) .rec-row:not(.is-rule),
.page-products:has(#f-case:target) .rec-row:not(.is-case) {
  display: none;
}

.page-products .archive-flow {
  margin-top: 26px;
}

.page-products .archive-rail {
  margin-bottom: 22px;
}

.page-products .rail-head {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--press-blue);
}

.page-products .rail-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-products .rail-list a {
  display: block;
  padding: 7px 13px;
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  letter-spacing: 0.06em;
  color: var(--press-blue);
  white-space: nowrap;
  text-decoration: none;
  border: 1px solid var(--pp-axis);
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-products .rail-list a:hover,
.page-products .rail-list a:focus-visible {
  color: var(--ink-blue);
  background: var(--pp-gold-wash);
  border-color: var(--sand-gold);
}

.page-products .rail-scale {
  display: none;
}

.page-products .drawer-stack {
  border-top: 1px solid var(--pp-axis);
}

.page-products .drawer {
  margin-top: -1px;
  background: var(--paper);
  border: 1px solid var(--pp-axis);
  transition: border-color 0.18s var(--ease);
}

.page-products .drawer:hover {
  border-color: var(--sand-gold);
}

.page-products .drawer-head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 15px 18px;
  list-style: none;
  cursor: pointer;
  background: var(--sand);
  transition: background-color 0.18s var(--ease);
}

.page-products .drawer-head::-webkit-details-marker {
  display: none;
}

.page-products .drawer-head .stamp {
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  letter-spacing: 0.06em;
  color: var(--ink-blue);
  background: rgba(199, 154, 78, 0.18);
  padding: 3px 9px;
}

.page-products .drawer-title {
  font-size: var(--fs-16);
  color: var(--ink-blue);
}

.page-products .drawer-caret {
  margin-left: auto;
  flex: none;
  width: 9px;
  height: 9px;
  color: var(--press-blue);
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.18s var(--ease), color 0.18s var(--ease);
}

.page-products .drawer[open] > .drawer-head {
  background: var(--ink-blue);
}

.page-products .drawer[open] > .drawer-head .drawer-title {
  color: var(--paper);
}

.page-products .drawer[open] > .drawer-head .stamp {
  color: var(--sand-gold);
  background: rgba(199, 154, 78, 0.2);
}

.page-products .drawer[open] .drawer-caret {
  color: var(--sand-gold);
  transform: rotate(-135deg);
}

.page-products .drawer-body {
  padding: 8px 0 14px;
}

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

.page-products .rec-row {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  grid-template-areas:
    "time tag"
    "time val";
  gap: 6px 14px;
  align-items: start;
  padding: 13px 18px;
  border-bottom: 1px dashed var(--pp-axis);
}

.page-products .rec-row:last-child {
  border-bottom: 0;
}

.page-products .rec-time {
  grid-area: time;
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  letter-spacing: 0.04em;
  color: var(--press-blue);
  padding-top: 4px;
}

.page-products .rec-tag {
  grid-area: tag;
  justify-self: start;
}

.page-products .rec-val {
  grid-area: val;
  font-family: var(--font-mono);
  font-size: var(--fs-16);
  color: var(--ink-black);
}

.page-products .drawer-body .note {
  margin: 6px 18px 0;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--ink-grey);
}

/* ---------- 03 检索方式 ---------- */

.page-products .find-grid {
  display: grid;
  gap: 18px;
}

.page-products .find-card {
  padding: 24px 22px;
  background: var(--paper);
  border: 1px solid var(--pp-axis);
  transition: border-color 0.18s var(--ease), transform 0.18s var(--ease);
}

.page-products .find-card:hover,
.page-products .find-card:focus-within,
.page-products .find-card:focus-visible {
  border-color: var(--sand-gold);
  transform: translateY(-2px);
  outline: none;
}

.page-products .find-symbol {
  width: 44px;
  height: 44px;
  margin: 0 0 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: var(--fs-24);
  color: var(--ink-blue);
  background: var(--sand);
  border: 1px solid var(--pp-axis);
}

.page-products .find-card h3 {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: var(--fs-24);
  color: var(--ink-black);
}

.page-products .find-card p {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.76;
  color: var(--ink-grey);
}

.page-products .find-hint {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  margin-top: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  color: var(--sand-gold);
  transition: max-height 0.18s var(--ease), opacity 0.18s var(--ease), margin-top 0.18s var(--ease);
}

.page-products .find-card:hover .find-hint,
.page-products .find-card:focus-within .find-hint,
.page-products .find-card:focus-visible .find-hint {
  max-height: 120px;
  opacity: 1;
  margin-top: 12px;
}

/* ---------- 04 字段 ---------- */

.page-products .field-split {
  display: grid;
  gap: 26px;
}

.page-products .field-copy > p {
  margin: 0 0 20px;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--ink-grey);
}

.page-products .field-list {
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
}

.page-products .field-item {
  padding: 16px 0;
  border-top: 1px solid var(--pp-axis);
}

.page-products .field-item:last-child {
  border-bottom: 1px solid var(--pp-axis);
}

.page-products .field-key {
  display: inline-block;
  margin-bottom: 8px;
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--ink-blue);
  background: var(--sand);
}

.page-products .field-item p {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.76;
  color: var(--ink-grey);
}

.page-products .field-copy .note {
  font-size: var(--fs-14);
  line-height: 1.72;
  color: var(--ink-grey);
}

/* ---------- 05 栏目 ---------- */

.page-products .index-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--pp-axis);
}

.page-products .index-item {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 14px;
  padding: 20px 0;
  border-bottom: 1px solid var(--pp-axis);
}

.page-products .index-item-no {
  font-family: var(--font-mono);
  font-size: var(--fs-18);
  color: var(--sand-gold);
  letter-spacing: 0.04em;
}

.page-products .index-item h3 {
  margin: 0 0 8px;
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: var(--fs-24);
  color: var(--ink-black);
}

.page-products .index-item p {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.78;
  color: var(--ink-grey);
}

.page-products .range-card {
  margin-top: 28px;
  padding: 24px 22px;
  background: var(--ink-blue);
  color: var(--paper);
}

.page-products .range-label {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--sand-gold);
}

.page-products .range-text {
  margin: 0 0 12px;
  font-size: var(--fs-16);
  line-height: 1.78;
  color: rgba(247, 242, 232, 0.84);
}

.page-products .range-card .link-u {
  display: inline-block;
  font-size: var(--fs-16);
  color: var(--sand-gold);
}

/* ---------- 06 后续路径 ---------- */

.page-products .chain-grid {
  display: grid;
  gap: 14px;
  margin-top: 26px;
}

.page-products .chain-link {
  display: block;
  padding: 20px 20px 22px;
  text-decoration: none;
  background: var(--paper);
  border: 1px solid var(--pp-axis);
  border-left: 3px solid var(--sand-gold);
  transition: background-color 0.18s var(--ease), transform 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-products .chain-link:hover {
  background: var(--sand);
  transform: translateY(-2px);
  border-color: var(--sand-gold);
}

.page-products .chain-step {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--press-blue);
}

.page-products .chain-title {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-serif);
  font-size: var(--fs-24);
  color: var(--ink-black);
}

.page-products .chain-desc {
  display: block;
  font-size: var(--fs-16);
  line-height: 1.72;
  color: var(--ink-grey);
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-products .rec-row {
    grid-template-columns: 72px 150px minmax(0, 1fr);
    grid-template-areas: "time tag val";
    align-items: center;
    gap: 18px;
  }

  .page-products .rec-time {
    padding-top: 0;
  }

  .page-products .rec-val {
    justify-self: end;
  }

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

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

@media (min-width: 960px) {
  .page-products {
    padding-bottom: 112px;
  }

  .page-products .prod-hero {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    align-items: center;
    gap: 56px;
    padding: 42px 0 68px;
  }

  .page-products .section {
    padding: 76px 0 12px;
  }

  .page-products .path-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-products .find-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-products .chain-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-products .field-split {
    grid-template-columns: minmax(0, 0.42fr) minmax(0, 0.58fr);
    gap: 44px;
    align-items: start;
  }

  .page-products .index-item {
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 22px;
    padding: 24px 0;
  }

  .page-products .archive-flow {
    display: grid;
    grid-template-columns: var(--pp-rail-w) minmax(0, 1fr);
    gap: 0 44px;
    align-items: start;
    margin-top: 34px;
  }

  .page-products .archive-rail {
    position: sticky;
    top: 100px;
    align-self: start;
    margin-bottom: 0;
    padding-right: 26px;
    border-right: 1px solid var(--pp-axis);
  }

  .page-products .rail-list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-products .rail-list a {
    padding: 11px 0 11px 14px;
    border: 0;
    border-left: 2px solid transparent;
  }

  .page-products .rail-scale {
    display: block;
    width: 24px;
    height: 200px;
    margin-top: 22px;
  }

  .page-products .rail-scale line {
    stroke: var(--pp-axis);
    stroke-width: 1;
  }

  .page-products .range-card {
    padding: 32px 34px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .path-card,
  .page-products .find-card,
  .page-products .chain-link,
  .page-products .drawer,
  .page-products .filter-chip,
  .page-products .rail-list a,
  .page-products .drawer-caret,
  .page-products .find-hint {
    transition: none;
  }

  .page-products .path-card:hover,
  .page-products .find-card:hover,
  .page-products .find-card:focus-within,
  .page-products .find-card:focus-visible,
  .page-products .chain-link:hover {
    transform: none;
  }
}