.page-products {
  --pd-rail-w: 76px;
  --pd-cut: 8deg;
  --pd-edge: 26px;
  background: var(--ky-paper);
}

/* ---------- 面包屑 ---------- */
.page-products .pd-crumb {
  padding-top: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--ky-grey);
}
.page-products .pd-crumb a {
  color: var(--ky-ink);
  text-decoration: none;
  border-bottom: 1px solid var(--ky-sand);
}
.page-products .pd-crumb a:hover { border-bottom-color: var(--ky-red); color: var(--ky-red); }
.page-products .pd-crumb__sep { color: var(--ky-sand); }
.page-products .pd-crumb__now { color: var(--ky-ink); font-weight: 700; }

/* ---------- 首屏：章节预览牌 ---------- */
.page-products .pd-open {
  position: relative;
  padding: 30px 0 44px;
  border-bottom: 1px solid var(--ky-ink);
  margin-bottom: 34px;
}
.page-products .pd-open__tag {
  display: inline-block;
  margin: 0 0 18px;
  background: var(--ky-sand);
  border: 1px solid var(--ky-ink);
  color: var(--ky-ink);
}
.page-products .pd-open__title {
  margin: 0 0 20px;
  font-family: var(--ky-sans);
  font-weight: 900;
  font-size: clamp(32px, 6.4vw, 66px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--ky-ink);
  max-width: 16em;
}
.page-products .pd-open__title br { display: none; }
.page-products .pd-open__lede {
  margin: 0 0 28px;
  max-width: 44em;
  font-size: 17px;
  line-height: 1.75;
  color: var(--ky-ink);
}
.page-products .pd-open__index {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--ky-ink);
}
.page-products .pd-open__item {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--ky-sheet);
}
.page-products .pd-open__item:last-child { border-bottom: 0; }
.page-products .pd-open__no {
  font-family: var(--ky-mono);
  font-size: 12px;
  color: var(--ky-red);
  letter-spacing: 0.1em;
  flex: 0 0 auto;
}
.page-products .pd-open__txt {
  font-size: 15px;
  color: var(--ky-ink);
  font-weight: 500;
}

/* ---------- 页面骨架：左侧章节轨 + 内容流 ---------- */
.page-products .pd-frame {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  padding-bottom: 60px;
}
.page-products .pd-rail {
  position: static;
  margin-bottom: 24px;
}
.page-products .pd-rail .ky-chapterrail__list {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  list-style: none;
  margin: 0;
  padding: 0 0 8px;
  border-bottom: 1px solid var(--ky-sheet);
  -webkit-overflow-scrolling: touch;
}
.page-products .pd-rail .ky-chapterrail__item { flex: 0 0 auto; }
.page-products .pd-rail .ky-chapterrail__link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 10px;
  text-decoration: none;
  color: var(--ky-grey);
  border: 1px solid transparent;
  white-space: nowrap;
  font-size: 13px;
}
.page-products .pd-rail .ky-chapterrail__link:hover,
.page-products .pd-rail .ky-chapterrail__link.is-active {
  color: var(--ky-ink);
  border-color: var(--ky-ink);
  background: var(--ky-sheet);
}
.page-products .pd-rail .ky-chapterrail__no {
  font-family: var(--ky-mono);
  font-size: 11px;
  color: var(--ky-red);
}
.page-products .pd-rail .ky-chapterrail__title { display: inline; }

/* ---------- 通用区块头 ---------- */
.page-products .pd-block { padding: 34px 0 46px; }
.page-products .pd-head {
  position: relative;
  display: block;
  margin-bottom: 22px;
  padding-left: 0;
}
.page-products .pd-head__no {
  display: inline-block;
  font-family: var(--ky-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--ky-red);
  background: var(--ky-sheet);
  border: 1px solid var(--ky-ink);
  padding: 3px 8px;
  margin-bottom: 14px;
}
.page-products .pd-head__title {
  margin: 0 0 8px;
  font-family: var(--ky-sans);
  font-weight: 900;
  font-size: clamp(24px, 4.6vw, 40px);
  line-height: 1.14;
  letter-spacing: -0.015em;
  color: var(--ky-ink);
  max-width: 18em;
}
.page-products .pd-head__kicker {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--ky-grey);
}
.page-products .pd-lead {
  margin: 0 0 26px;
  max-width: 42em;
  font-size: 16.5px;
  line-height: 1.78;
  color: var(--ky-ink);
}
.page-products .pd-hint {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ky-grey);
  border-left: 3px solid var(--ky-sand);
  padding-left: 12px;
  max-width: 40em;
}
.page-products .pd-hint--wide {
  margin-top: 28px;
  border-left-color: var(--ky-red);
  max-width: 46em;
  color: var(--ky-ink);
}
.page-products .pd-mono { font-family: var(--ky-mono); }

/* ---------- 维度切换签 ---------- */
.page-products .pd-dims {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
}
.page-products .pd-dims__cap {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--ky-grey);
  margin-right: 4px;
}
.page-products .pd-dims__tab {
  font-family: var(--ky-mono);
  font-size: 13px;
  padding: 5px 12px;
  border: 1px solid var(--ky-ink);
  color: var(--ky-ink);
  background: transparent;
}
.page-products .pd-dims__tab[aria-current="true"] {
  background: var(--ky-ink);
  color: var(--ky-paper);
  border-color: var(--ky-ink);
}

/* ---------- 联赛筛选签 ---------- */
.page-products .pd-filterbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  padding: 12px;
  background: var(--ky-sheet);
  border: 1px solid var(--ky-ink);
}
.page-products .pd-filterbar__cap {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--ky-grey);
  margin-right: 4px;
}
.page-products .pd-filterbar .ky-filter {
  font-family: var(--ky-mono);
  font-size: 13px;
  padding: 5px 12px;
  background: var(--ky-paper);
  border: 1px solid var(--ky-ink);
  color: var(--ky-ink);
  cursor: pointer;
}
.page-products .pd-filterbar .ky-filter.is-active {
  background: var(--ky-red);
  border-color: var(--ky-red);
  color: var(--ky-paper);
}

/* ---------- 对比表 ---------- */
.page-products .pd-tablewrap {
  overflow-x: auto;
  border: 2px solid var(--ky-ink);
  background: var(--ky-paper);
  box-shadow: var(--ky-shadow);
  -webkit-overflow-scrolling: touch;
}
.page-products .pd-table {
  width: 100%;
  min-width: 820px;
  border-collapse: collapse;
  font-size: 14px;
}
.page-products .pd-table thead th {
  background: var(--ky-night);
  color: var(--ky-paper);
  text-align: left;
  font-weight: 700;
  letter-spacing: 0.06em;
  font-size: 13px;
  padding: 11px 14px;
  white-space: nowrap;
}
.page-products .pd-table tbody th,
.page-products .pd-table tbody td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--ky-sheet);
  color: var(--ky-ink);
  vertical-align: top;
  line-height: 1.6;
}
.page-products .pd-table tbody tr:nth-child(even) th,
.page-products .pd-table tbody tr:nth-child(even) td {
  background: #F2EEE5;
}
.page-products .pd-table tbody tr:last-child th,
.page-products .pd-table tbody tr:last-child td { border-bottom: 0; }
.page-products .pd-table__pin {
  position: sticky;
  left: 0;
  z-index: 2;
  background: var(--ky-paper);
  border-right: 2px solid var(--ky-ink);
  white-space: nowrap;
}
.page-products .pd-table thead .pd-table__pin {
  background: var(--ky-night);
  color: var(--ky-paper);
}
.page-products .pd-table tbody tr:nth-child(even) .pd-table__pin { background: #F2EEE5; }
.page-products .pd-tag {
  display: inline-block;
  background: var(--ky-sand);
  border: 1px solid var(--ky-ink);
  padding: 3px 9px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ky-ink);
}

/* ---------- 图片 ---------- */
.page-products .pd-fig {
  margin: 32px 0 0;
  border: 2px solid var(--ky-ink);
  background: var(--ky-sheet);
  box-shadow: 4px 4px 0 var(--ky-sand);
  overflow: hidden;
}
.page-products .pd-fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.page-products .pd-fig .ky-media__cap {
  margin: 0;
  padding: 10px 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ky-grey);
  border-top: 1px solid var(--ky-ink);
  background: var(--ky-paper);
}

/* ---------- 双场分屏 ---------- */
.page-products .pd-pair {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border: 2px solid var(--ky-ink);
  box-shadow: var(--ky-shadow);
  background: var(--ky-paper);
}
.page-products .pd-pair__side {
  padding: 22px 18px;
  position: relative;
}
.page-products .pd-pair__side--first {
  border-bottom: 2px solid var(--ky-ink);
  background: var(--ky-paper);
}
.page-products .pd-pair__side--second {
  background: var(--ky-sheet);
}
.page-products .pd-pair__tag {
  display: inline-block;
  background: var(--ky-red);
  color: var(--ky-paper);
  border: 1px solid var(--ky-red);
  padding: 3px 9px;
  font-size: 12px;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}
.page-products .pd-pair__side--second .pd-pair__tag {
  background: var(--ky-night);
  border-color: var(--ky-night);
}
.page-products .pd-pair__name {
  margin: 0 0 6px;
  font-size: 19px;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--ky-ink);
}
.page-products .pd-pair__time {
  margin: 0 0 14px;
  font-size: 13px;
  color: var(--ky-red-deep);
}
.page-products .pd-pair__list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-products .pd-pair__list li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 7px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ky-ink);
}
.page-products .pd-pair__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 7px;
  height: 2px;
  background: var(--ky-red);
}

/* ---------- 提醒条 ---------- */
.page-products .pd-alertbar {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin-top: 18px;
  border: 1px solid var(--ky-ink);
  background: var(--ky-night);
}
.page-products .pd-alert {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--ky-panel);
}
.page-products .pd-alert:last-child { border-bottom: 0; }
.page-products .pd-alert__num {
  font-size: 30px;
  font-weight: 700;
  color: var(--ky-neon);
  line-height: 1;
}
.page-products .pd-alert__unit {
  font-size: 13px;
  color: var(--ky-sand);
  letter-spacing: 0.08em;
}
.page-products .pd-alert__desc {
  font-size: 13.5px;
  color: var(--ky-paper);
  opacity: 0.86;
  margin-left: auto;
  text-align: right;
  line-height: 1.5;
}

/* ---------- 深色数据区 ---------- */
.page-products .pd-dark {
  position: relative;
  overflow: hidden;
  padding: 40px 0 46px;
  margin: 10px 0 0;
  background: var(--ky-night);
  border-top: 3px solid var(--ky-red);
  border-bottom: 3px solid var(--ky-red);
}
.page-products .pd-dark__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.page-products .pd-dark__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.16;
  filter: saturate(0.5);
}
.page-products .pd-dark__inner {
  position: relative;
  z-index: 1;
  padding-left: var(--ky-gutter);
  padding-right: var(--ky-gutter);
  max-width: calc(var(--ky-shell-w) - 2 * var(--ky-gutter));
  margin: 0 auto;
}
.page-products .pd-head--dark .pd-head__no {
  background: var(--ky-panel);
  color: var(--ky-neon);
  border-color: var(--ky-neon);
}
.page-products .pd-head--dark .pd-head__title { color: var(--ky-paper); }
.page-products .pd-head--dark .pd-head__kicker { color: var(--ky-sand); }
.page-products .pd-lead--dark { color: #E4E7EE; }

.page-products .pd-metrics {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--ky-panel);
}
.page-products .pd-metric {
  display: grid;
  grid-template-columns: 7.5em 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--ky-panel);
}
.page-products .pd-metric__name {
  font-size: 13.5px;
  color: var(--ky-paper);
  opacity: 0.9;
}
.page-products .pd-metric__bar {
  display: block;
  height: 6px;
  background: var(--ky-panel);
  position: relative;
  overflow: hidden;
}
.page-products .pd-metric__bar i {
  display: block;
  height: 100%;
  background: var(--ky-neon);
  opacity: 0.35;
}
.page-products .pd-metric:nth-child(1) .pd-metric__bar i { width: 88%; }
.page-products .pd-metric:nth-child(2) .pd-metric__bar i { width: 46%; }
.page-products .pd-metric:nth-child(3) .pd-metric__bar i { width: 43%; }
.page-products .pd-metric:nth-child(4) .pd-metric__bar i { width: 64%; }
.page-products .pd-metric:nth-child(5) .pd-metric__bar i { width: 57%; }
.page-products .pd-metric:nth-child(6) .pd-metric__bar i { width: 43%; }
.page-products .pd-metric:nth-child(7) .pd-metric__bar i { width: 36%; }
.page-products .pd-metric:nth-child(8) .pd-metric__bar i { width: 21%; }
.page-products .pd-metric:nth-child(9) .pd-metric__bar i { width: 29%; }
.page-products .pd-metric:nth-child(10) .pd-metric__bar i { width: 34%; }
.page-products .pd-metric:nth-child(11) .pd-metric__bar i { width: 52%; }
.page-products .pd-metric__val {
  font-size: 15px;
  font-weight: 700;
  color: var(--ky-neon);
  min-width: 5em;
  text-align: right;
}

.page-products .pd-tick {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 24px;
  padding: 12px 14px;
  background: var(--ky-panel);
  border-left: 3px solid var(--ky-neon);
}
.page-products .pd-tick__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ky-neon);
  flex: 0 0 auto;
  animation: pd-pulse 2.4s ease-in-out infinite;
}
.page-products .pd-tick__txt {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--ky-paper);
}
@keyframes pd-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.35; transform: scale(0.72); }
}

/* ---------- 赛季书签 ---------- */
.page-products .pd-seasons {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 0 0 24px;
}
.page-products .pd-season {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 10px;
  border: 1px solid var(--ky-ink);
  background: var(--ky-sheet);
  text-align: center;
}
.page-products .pd-season--on {
  background: var(--ky-night);
  border-color: var(--ky-night);
  box-shadow: 4px 4px 0 var(--ky-red);
}
.page-products .pd-season__no {
  font-size: 16px;
  font-weight: 700;
  color: var(--ky-ink);
  letter-spacing: 0.06em;
}
.page-products .pd-season--on .pd-season__no { color: var(--ky-neon); }
.page-products .pd-season__cap {
  font-size: 12px;
  color: var(--ky-grey);
  letter-spacing: 0.08em;
}
.page-products .pd-season--on .pd-season__cap { color: var(--ky-sand); }

.page-products .pd-levels {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--ky-ink);
}
.page-products .pd-level {
  display: grid;
  grid-template-columns: 5.4em 1fr;
  gap: 14px;
  align-items: start;
  padding: 14px 0;
  border-bottom: 1px solid var(--ky-sheet);
}
.page-products .pd-level__k {
  font-family: var(--ky-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ky-red);
  padding-top: 3px;
}
.page-products .pd-level__v {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ky-ink);
}

/* ---------- 两步重登 ---------- */
.page-products .pd-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-bottom: 22px;
}
.page-products .pd-step {
  padding: 18px 16px;
  border: 2px solid var(--ky-ink);
  background: var(--ky-paper);
  box-shadow: 4px 4px 0 var(--ky-sand);
}
.page-products .pd-step:nth-child(2) {
  transform: translateX(0);
  background: var(--ky-sheet);
  box-shadow: 6px 6px 0 var(--ky-sand);
}
.page-products .pd-step__pin {
  display: inline-block;
  background: var(--ky-sand);
  border: 1px solid var(--ky-ink);
  padding: 3px 9px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ky-ink);
  margin-bottom: 10px;
}
.page-products .pd-step__txt {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ky-ink);
}

.page-products .pd-fold {
  border: 1px solid var(--ky-ink);
  background: var(--ky-sheet);
}
.page-products .pd-fold__sum {
  cursor: pointer;
  padding: 13px 16px;
  font-size: 14px;
  font-weight: 700;
  color: var(--ky-ink);
  letter-spacing: 0.02em;
  list-style: none;
}
.page-products .pd-fold__sum::-webkit-details-marker { display: none; }
.page-products .pd-fold__sum::before {
  content: "＋";
  font-family: var(--ky-mono);
  color: var(--ky-red);
  margin-right: 10px;
}
.page-products .pd-fold[open] .pd-fold__sum::before { content: "－"; }
.page-products .pd-fold__body {
  padding: 0 16px 16px;
  border-top: 1px solid var(--ky-ink);
  background: var(--ky-paper);
}
.page-products .pd-fold__body p {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--ky-ink);
}
.page-products .pd-fold__body strong { color: var(--ky-red-deep); }

/* ---------- 日程本 ---------- */
.page-products .pd-note-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.page-products .pd-note-card {
  padding: 20px 18px;
  border: 2px solid var(--ky-ink);
  background: var(--ky-paper);
  box-shadow: 4px 4px 0 var(--ky-sand);
}
.page-products .pd-note-card--alt {
  background: var(--ky-sheet);
  transform: translateY(0);
  box-shadow: 6px 6px 0 var(--ky-night);
}
.page-products .pd-note-card__title {
  margin: 0 0 14px;
  padding-bottom: 10px;
  font-size: 16px;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--ky-ink);
  border-bottom: 1px solid var(--ky-ink);
}
.page-products .pd-note-card__list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-products .pd-note-card__list li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 9px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ky-ink);
}
.page-products .pd-note-card__list li:last-child { margin-bottom: 0; }
.page-products .pd-note-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 8px;
  height: 8px;
  background: var(--ky-red);
}

/* ---------- 使用路径：斜切三段 ---------- */
.page-products .pd-route {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}
.page-products .pd-route__seg {
  position: relative;
  padding: 22px 20px 24px;
  background: var(--ky-ink);
  color: var(--ky-paper);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--pd-edge)), 0 100%);
}
.page-products .pd-route__seg:nth-child(2) { background: var(--ky-red); }
.page-products .pd-route__seg:nth-child(3) { background: var(--ky-night); }
.page-products .pd-route__time {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--ky-neon);
  margin-bottom: 10px;
}
.page-products .pd-route__seg:nth-child(2) .pd-route__time { color: var(--ky-sand); }
.page-products .pd-route__name {
  margin: 0 0 8px;
  font-size: 19px;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--ky-paper);
}
.page-products .pd-route__txt {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--ky-paper);
  opacity: 0.92;
}

/* ---------- 行动入口 ---------- */
.page-products .pd-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
}

/* ---------- 返回顶部阅读条 ---------- */
.page-products .pd-reading {
  position: fixed;
  right: 14px;
  bottom: 18px;
  z-index: 40;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.page-products .pd-reading .ky-reading__word {
  font-family: var(--ky-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--ky-grey);
  writing-mode: vertical-rl;
}
.page-products .pd-reading .ky-reading__track {
  display: block;
  width: 6px;
  height: 78px;
  background: var(--ky-sheet);
  border: 1px solid var(--ky-ink);
  position: relative;
  overflow: hidden;
}
.page-products .pd-reading .ky-reading__fill {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 0;
  background: var(--ky-red);
}
.page-products .pd-reading .ky-reading__btn {
  width: 34px;
  height: 34px;
  padding: 0;
  font-size: 11px;
  line-height: 1;
  border: 1px solid var(--ky-ink);
  background: var(--ky-paper);
  color: var(--ky-ink);
  cursor: pointer;
}
.page-products .pd-reading .ky-reading__btn:hover {
  background: var(--ky-ink);
  color: var(--ky-paper);
}

/* ---------- 窄屏修正 ---------- */
@media (max-width: 359px) {
  .page-products .pd-metric { grid-template-columns: 1fr auto; }
  .page-products .pd-metric__bar { display: none; }
  .page-products .pd-route__seg { --pd-edge: 18px; }
}

/* ---------- 平板 ---------- */
@media (min-width: 700px) {
  .page-products .pd-open { padding: 40px 0 54px; }
  .page-products .pd-open__index {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 28px;
  }
  .page-products .pd-pair { grid-template-columns: 1fr 1fr; }
  .page-products .pd-pair__side--first {
    border-bottom: 0;
    border-right: 2px solid var(--ky-ink);
  }
  .page-products .pd-alertbar { grid-template-columns: 1fr 1fr; }
  .page-products .pd-alert:first-child { border-bottom: 0; border-right: 1px solid var(--ky-panel); }
  .page-products .pd-metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 26px; }
  .page-products .pd-seasons { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .page-products .pd-note-grid { grid-template-columns: 1fr 1fr; }
  .page-products .pd-route { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .page-products .pd-steps { grid-template-columns: 1fr 1fr; }
}

/* ---------- 桌面：左侧章节轨常驻 ---------- */
@media (min-width: 1024px) {
  .page-products .pd-open { padding: 46px 0 62px; }
  .page-products .pd-open__title br { display: block; }
  .page-products .pd-frame {
    grid-template-columns: var(--pd-rail-w) minmax(0, 1fr);
    column-gap: 34px;
    align-items: start;
  }
  .page-products .pd-rail {
    position: sticky;
    top: calc(var(--masthead-h) + 24px);
    margin-bottom: 0;
  }
  .page-products .pd-rail .ky-chapterrail__list {
    display: block;
    overflow: visible;
    border-bottom: 0;
    border-left: 1px solid var(--ky-sheet);
    padding: 0;
  }
  .page-products .pd-rail .ky-chapterrail__item { margin: 0; }
  .page-products .pd-rail .ky-chapterrail__link {
    display: block;
    padding: 12px 0 12px 12px;
    border: 0;
    border-left: 3px solid transparent;
    white-space: normal;
  }
  .page-products .pd-rail .ky-chapterrail__link:hover,
  .page-products .pd-rail .ky-chapterrail__link.is-active {
    background: transparent;
    border-color: var(--ky-red);
    color: var(--ky-ink);
  }
  .page-products .pd-rail .ky-chapterrail__no {
    display: block;
    margin-bottom: 3px;
  }
  .page-products .pd-rail .ky-chapterrail__title {
    display: block;
    font-size: 13px;
    line-height: 1.5;
  }
  .page-products .pd-block { padding: 46px 0 58px; }
  .page-products .pd-open__index { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .page-products .pd-lead { font-size: 17px; }
  .page-products .pd-note-card--alt { transform: translateY(10px); }
  .page-products .pd-step:nth-child(2) { transform: translateX(10px) translateY(10px); }
  .page-products .pd-fig { margin-top: 40px; }
}

/* ---------- 动效约束 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-products .pd-tick__dot { animation: none; }
  .page-products .pd-step:nth-child(2),
  .page-products .pd-note-card--alt { transform: none; }
}