.page-products {
  --fn-gap: clamp(18px, 3vw, 44px);
  --fn-pad: clamp(44px, 7vw, 96px);
  --fn-radius: 0px;
  display: block;
  background: var(--cream);
  color: var(--ink);
}

.page-products .fn-wrap {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
}

.page-products .crumbs {
  padding: 14px var(--gutter) 0;
}

/* ---------- 首屏 ---------- */

.page-products .fn-hero {
  position: relative;
  overflow: hidden;
  background: var(--deep);
  color: var(--cream);
  border-bottom: var(--bd);
  padding: clamp(30px, 5vw, 64px) var(--gutter) clamp(26px, 4vw, 52px);
}

.page-products .fn-hero::before {
  content: "";
  position: absolute;
  right: -18%;
  bottom: -34%;
  width: 78%;
  height: 82%;
  background: var(--deep-2);
  transform: rotate(-9deg) skewX(-10deg);
  opacity: 0.7;
  pointer-events: none;
}

.page-products .fn-hero::after {
  content: "";
  position: absolute;
  left: -6%;
  top: -30%;
  width: 34%;
  height: 68%;
  background: var(--amber);
  opacity: 0.22;
  transform: rotate(14deg);
  pointer-events: none;
}

.page-products .fn-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--fn-gap);
}

.page-products .fn-hero-main .eyebrow {
  color: var(--sand);
  letter-spacing: 0.16em;
}

.page-products .fn-title {
  margin: 14px 0 0;
  font-size: clamp(42px, 11vw, 104px);
  line-height: 0.94;
  letter-spacing: -0.02em;
  font-weight: 900;
  color: var(--cream);
}

.page-products .fn-title span {
  display: block;
}

.page-products .fn-title span:nth-child(2) {
  color: var(--sand);
}

.page-products .fn-title span:nth-child(3) {
  color: var(--amber);
}

.page-products .fn-hero-side .lede {
  color: var(--cream);
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.8;
}

.page-products .fn-hero-note {
  margin: 14px 0 0;
  padding-left: 14px;
  border-left: 3px solid var(--blue);
  color: var(--mist);
  font-size: 15px;
  line-height: 1.7;
}

.page-products .fn-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

/* 快速跳转路线 */

.page-products .fn-route-nav {
  position: relative;
  z-index: 1;
  margin-top: clamp(28px, 4vw, 52px);
}

.page-products .fn-coords {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-products .fn-coords a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 12px 14px;
  background: var(--sand);
  color: var(--ink);
  border: var(--bd);
  box-shadow: 4px 4px 0 var(--clay);
  text-decoration: none;
  font-weight: 700;
  font-size: 15px;
  transition: background 0.18s ease, color 0.18s ease, transform 0.18s ease;
}

.page-products .fn-coords a:hover,
.page-products .fn-coords a:focus-visible {
  background: var(--red);
  color: var(--cream);
  transform: translate(-2px, -2px);
}

.page-products .fn-coords .mono {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--blue);
}

.page-products .fn-coords a:hover .mono,
.page-products .fn-coords a:focus-visible .mono {
  color: var(--cream);
}

/* ---------- 通用区块 ---------- */

.page-products .fn-section {
  padding: var(--fn-pad) var(--gutter);
  border-top: var(--bd);
}

.page-products .fn-section--cream {
  background: var(--cream);
}

.page-products .fn-section--sand {
  background: var(--sand);
}

.page-products .fn-section--deep {
  background: var(--deep);
  color: var(--cream);
}

.page-products .fn-section--deep .h2,
.page-products .fn-section--deep .h3 {
  color: var(--cream);
}

.page-products .fn-section--deep .lede {
  color: var(--mist);
}

.page-products .fn-section--deep .eyebrow {
  color: var(--amber);
}

.page-products .fn-section .section-head {
  max-width: 860px;
  margin-bottom: clamp(24px, 4vw, 48px);
}

/* ---------- 双栏 ---------- */

.page-products .fn-split {
  display: grid;
  gap: clamp(24px, 4vw, 52px);
  align-items: start;
}

.page-products .fn-split-body {
  min-width: 0;
}

.page-products .fn-media {
  margin: 0;
  border: var(--bd);
  box-shadow: var(--shadow-hard);
  background: var(--cream);
  overflow: hidden;
}

.page-products .fn-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-products .fn-media .media-caption {
  display: block;
  padding: 10px 14px;
  border-top: 3px solid var(--ink);
  background: var(--sand);
  color: var(--ink);
  font-size: 13px;
  line-height: 1.6;
}

.page-products .fn-media--wide {
  margin-top: clamp(24px, 4vw, 44px);
}

/* ---------- 编号清单 ---------- */

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

.page-products .fn-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 16px 18px;
  background: var(--cream);
  border: var(--bd);
  box-shadow: 5px 5px 0 var(--clay);
}

.page-products .fn-list .h3 {
  margin: 0 0 6px;
}

.page-products .fn-list p {
  margin: 0;
  line-height: 1.75;
}

.page-products .fn-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 32px;
  padding: 0 8px;
  background: var(--deep);
  color: var(--sand);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.page-products .fn-tip {
  margin: 20px 0 0;
  padding: 14px 16px;
  background: var(--sand);
  border-left: 6px solid var(--blue);
  font-size: 15px;
  line-height: 1.7;
}

.page-products .fn-tip a {
  color: var(--blue);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 分类树 ---------- */

.page-products .fn-tree {
  display: grid;
  gap: 0;
  border: var(--bd);
  background: var(--cream);
  box-shadow: var(--shadow-hard);
}

.page-products .fn-tree-row {
  display: grid;
  gap: 6px;
  padding: 16px 18px;
  border-bottom: 2px solid var(--mist);
}

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

.page-products .fn-tree-key {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--red);
  font-weight: 700;
}

.page-products .fn-tree-val {
  line-height: 1.75;
}

/* ---------- 版本对照 ---------- */

.page-products .fn-tabs {
  margin-bottom: 0;
}

.page-products .fn-tabs .tab-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.page-products .fn-tabs .tab {
  padding: 11px 20px;
  border: var(--bd);
  background: transparent;
  color: var(--cream);
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
  transition: background 0.16s ease, color 0.16s ease;
}

.page-products .fn-tabs .tab[aria-selected="true"] {
  background: var(--red);
  color: var(--cream);
}

.page-products .fn-tabs .tab:hover,
.page-products .fn-tabs .tab:focus-visible {
  background: var(--sand);
  color: var(--ink);
}

.page-products .fn-compare {
  display: grid;
  border: var(--bd);
  box-shadow: var(--shadow-hard);
  background: var(--cream);
  color: var(--ink);
}

.page-products .fn-compare-col {
  padding: clamp(18px, 3vw, 28px);
}

.page-products .fn-compare-col--old {
  background: var(--mist);
  border-bottom: 3px solid var(--ink);
}

.page-products .fn-compare-col--new {
  background: var(--sand);
}

.page-products .fn-compare-tag {
  margin: 0 0 10px;
  display: inline-block;
  padding: 4px 10px;
  font-size: 12px;
  letter-spacing: 0.08em;
  border: 2px solid var(--ink);
  background: var(--cream);
}

.page-products .fn-compare-tag--red {
  background: var(--red);
  color: var(--cream);
  border-color: var(--red);
}

.page-products .fn-compare .h3 {
  margin: 0 0 12px;
}

.page-products .fn-bullets {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 8px;
  line-height: 1.75;
}

/* ---------- 模板 ---------- */

.page-products .fn-tpl-grid {
  display: grid;
  gap: 16px;
  margin-bottom: 22px;
}

.page-products .fn-tpl-card {
  padding: 20px;
  background: var(--sand);
  border: var(--bd);
  box-shadow: 5px 5px 0 var(--ink);
}

.page-products .fn-tpl-card .h3 {
  margin: 8px 0 10px;
}

.page-products .fn-tpl-card p {
  margin: 0;
  line-height: 1.75;
}

.page-products .fn-tpl-code {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--red);
  font-weight: 700;
}

.page-products .fn-accordion {
  border: var(--bd);
  background: var(--cream);
  box-shadow: 5px 5px 0 var(--clay);
}

.page-products .fn-accordion .acc-item + .acc-item {
  border-top: 2px solid var(--mist);
}

.page-products .fn-accordion .acc-trigger {
  width: 100%;
  text-align: left;
  padding: 16px 18px;
  background: transparent;
  border: 0;
  font: inherit;
  font-weight: 700;
  color: var(--deep);
  cursor: pointer;
}

.page-products .fn-accordion .acc-trigger:hover,
.page-products .fn-accordion .acc-trigger:focus-visible {
  background: var(--sand);
}

.page-products .fn-accordion .acc-panel {
  padding: 0 18px 18px;
  line-height: 1.8;
}

.page-products .fn-accordion .acc-panel p {
  margin: 0;
}

.page-products .fn-accordion .acc-panel a {
  color: var(--blue);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 时间线 ---------- */

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

.page-products .fn-timeline .tl-item {
  position: relative;
  padding: 0 0 28px 34px;
  border-left: 3px solid var(--ink);
  margin-left: 8px;
}

.page-products .fn-timeline .tl-item:last-child {
  border-left-color: transparent;
  padding-bottom: 0;
}

.page-products .fn-timeline .tl-dot {
  position: absolute;
  left: -12px;
  top: 4px;
  width: 20px;
  height: 20px;
  background: var(--amber);
  border: 3px solid var(--ink);
}

.page-products .fn-timeline .tl-item:last-child .tl-dot {
  background: var(--blue);
}

.page-products .fn-timeline .tl-date {
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--red);
  font-weight: 700;
}

.page-products .fn-timeline .tl-title {
  margin: 0 0 6px;
  font-size: clamp(18px, 2vw, 22px);
}

.page-products .fn-timeline .tl-text {
  margin: 0;
  max-width: 62ch;
  line-height: 1.8;
}

.page-products .fn-timeline .tl-text a {
  color: var(--blue);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 设备 ---------- */

.page-products .fn-device-list {
  display: grid;
  gap: 14px;
}

.page-products .fn-device {
  padding: 18px 20px;
  border: var(--bd);
  background: var(--cream);
  box-shadow: 5px 5px 0 var(--clay);
}

.page-products .fn-device .h3 {
  margin: 8px 0 8px;
}

.page-products .fn-device p {
  margin: 0;
  line-height: 1.75;
}

.page-products .fn-device-tag {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--blue);
  font-weight: 700;
}

/* ---------- 数据 ---------- */

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

.page-products .fn-stats li {
  padding: 18px 20px;
  border: 3px solid var(--sand);
  background: var(--deep-2);
  display: grid;
  gap: 8px;
}

.page-products .fn-stat-num {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  line-height: 1;
  color: var(--amber);
}

.page-products .fn-stat-label {
  font-size: 15px;
  line-height: 1.7;
  color: var(--cream);
}

/* ---------- 结尾行动 ---------- */

.page-products .fn-cta {
  margin-top: clamp(28px, 4vw, 48px);
  padding: clamp(22px, 3vw, 34px);
  background: var(--sand);
  color: var(--ink);
  border: var(--bd);
  box-shadow: var(--shadow-hard);
  display: grid;
  gap: 20px;
}

.page-products .fn-cta .h3 {
  margin: 0 0 10px;
}

.page-products .fn-cta p {
  margin: 0;
  max-width: 62ch;
  line-height: 1.8;
}

.page-products .fn-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 桌面与窄屏适配 ---------- */

@media (min-width: 760px) {
  .page-products .fn-compare {
    grid-template-columns: 1fr 1fr;
  }

  .page-products .fn-compare-col--old {
    border-bottom: 0;
    border-right: 3px solid var(--ink);
  }

  .page-products .fn-tpl-grid {
    grid-template-columns: 1fr 1fr;
  }

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

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

  .page-products .fn-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 920px) {
  .page-products .fn-hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: end;
  }

  .page-products .fn-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .page-products .fn-split--flip > .fn-split-media {
    order: -1;
  }

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

  .page-products .fn-timeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 clamp(20px, 3vw, 40px);
  }

  .page-products .fn-timeline .tl-item {
    padding-bottom: 32px;
  }

  .page-products .fn-timeline .tl-item:nth-last-child(-n + 2) {
    border-left-color: transparent;
  }
}

@media (max-width: 520px) {
  .page-products .fn-list li,
  .page-products .fn-tpl-card,
  .page-products .fn-device,
  .page-products .fn-tree,
  .page-products .fn-media,
  .page-products .fn-cta {
    box-shadow: 3px 3px 0 var(--ink);
  }

  .page-products .fn-tpl-card,
  .page-products .fn-device,
  .page-products .fn-accordion {
    box-shadow: 3px 3px 0 var(--clay);
  }

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

  .page-products .fn-coords a {
    padding: 10px 12px;
    font-size: 14px;
  }

  .page-products .fn-timeline .tl-item {
    padding-left: 26px;
  }
}