.page-products {
  --pp-rail: clamp(180px, 24vw, 262px);
  --pp-fg: var(--tvt-cream);
  --pp-sub: var(--tvt-paper);
  --pp-accent: var(--tvt-lime);
  padding-bottom: 0;
}

.page-products .head-rule {
  height: 5px;
  margin: clamp(22px, 3vw, 34px) 0 0;
  background: linear-gradient(90deg, var(--tvt-lime) 0 28%, var(--tvt-blue) 62%, rgba(46, 123, 255, 0) 100%);
}

/* ---------- 跳转条 ---------- */
.page-products .jump-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-products .jump-bar__link {
  display: inline-block;
  padding: 7px 13px;
  border: 1px solid var(--hair-strong);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--tvt-paper);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color var(--t-mid) var(--ease),
              color var(--t-mid) var(--ease),
              background-color var(--t-mid) var(--ease);
}

.page-products .jump-bar__link:hover,
.page-products .jump-bar__link:focus-visible {
  border-color: var(--tvt-lime);
  color: var(--tvt-lime);
  background-color: rgba(201, 255, 61, .08);
}

/* ---------- 宽面板通用骨架 ---------- */
.page-products .feature-panel {
  display: grid;
  gap: clamp(22px, 3.4vw, 46px);
}

.page-products .feature-panel__rail {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding-left: 16px;
  border-left: 2px solid var(--tvt-lime);
}

.page-products .band--cream .feature-panel__rail {
  border-left-color: var(--tvt-orange);
}

.page-products .feature-panel__index {
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--pp-accent);
}

.page-products .band--cream .feature-panel__index {
  color: var(--tvt-brick);
}

.page-products .feature-panel__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 3.6vw, 40px);
  line-height: 1;
  letter-spacing: .005em;
  color: var(--pp-fg);
}

.page-products .feature-panel__key {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 4px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--hair);
}

.page-products .feature-panel__key-value {
  font-size: clamp(34px, 4.4vw, 52px);
  line-height: .95;
  font-weight: 600;
  color: var(--pp-accent);
}

.page-products .feature-panel__key-label {
  font-size: 12px;
  line-height: 1.65;
  color: var(--pp-sub);
}

.page-products .feature-panel__body {
  display: flex;
  flex-direction: column;
  gap: clamp(18px, 2.4vw, 28px);
  min-width: 0;
}

.page-products .feature-panel__body > p {
  margin: 0;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--pp-sub);
}

.page-products .feature-panel__media {
  margin: 0;
}

.page-products .feature-panel__media img,
.page-products .feature-panel__rail-media img,
.page-products .cycle-media img {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
}

.page-products .feature-panel__rail-media {
  margin: 6px 0 0;
  border: 1px solid var(--hair);
}

.page-products .media__caption {
  display: block;
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--tvt-sage);
}

/* 反色章节的重定义 */
.page-products .band--cream {
  --pp-fg: var(--tvt-deep);
  --pp-sub: #45564b;
  --pp-accent: var(--tvt-orange);
}

.page-products .band--cream .feature-panel__key {
  border-top-color: rgba(10, 13, 11, .18);
}

.page-products .band--cream .media__caption {
  color: #6d7c72;
}

/* ---------- 01 轮次刻度 ---------- */
.page-products .round-scale {
  border-top: 1px solid var(--hair-strong);
  padding-top: 16px;
}

.page-products .round-scale__caption {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--tvt-sage);
}

.page-products .round-scale__list {
  display: flex;
  margin: 0;
  padding: 0 0 10px;
  list-style: none;
  overflow-x: auto;
  border-bottom: 1px solid var(--hair-strong);
  scrollbar-width: thin;
}

.page-products .round-scale__item {
  flex: 0 0 auto;
  min-width: 40px;
  padding: 0 8px 6px;
  border-left: 1px solid var(--hair);
}

.page-products .round-scale__item:first-child {
  border-left-color: var(--hair-strong);
}

.page-products .round-scale__num {
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--tvt-sage);
}

.page-products .round-scale__item.is-current {
  border-left-color: var(--tvt-lime);
}

.page-products .round-scale__item.is-current .round-scale__num {
  color: var(--tvt-lime);
  font-weight: 600;
}

.page-products .round-scale__note {
  margin: 12px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--tvt-sage);
}

/* ---------- 02 效率对比 ---------- */
.page-products .eff-switch {
  position: relative;
  border-top: 1px solid var(--hair-strong);
  padding-top: 16px;
}

.page-products .eff-switch__input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-products .eff-switch__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin-bottom: 18px;
}

.page-products .eff-switch__tab {
  padding: 8px 15px;
  border: 1px solid var(--hair-strong);
  margin-left: -1px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--tvt-paper);
  cursor: pointer;
  user-select: none;
  transition: background-color var(--t-fast) var(--ease),
              color var(--t-fast) var(--ease),
              border-color var(--t-fast) var(--ease);
}

.page-products .eff-switch__tab:first-child {
  margin-left: 0;
}

.page-products .eff-switch__tab:hover {
  border-color: var(--tvt-lime);
  color: var(--tvt-lime);
}

.page-products #eff-goals:checked ~ .eff-switch__tabs .eff-switch__tab[for="eff-goals"],
.page-products #eff-minutes:checked ~ .eff-switch__tabs .eff-switch__tab[for="eff-minutes"] {
  background-color: var(--tvt-lime);
  border-color: var(--tvt-lime);
  color: var(--tvt-deep);
  font-weight: 600;
}

.page-products #eff-goals:focus-visible ~ .eff-switch__tabs .eff-switch__tab[for="eff-goals"],
.page-products #eff-minutes:focus-visible ~ .eff-switch__tabs .eff-switch__tab[for="eff-minutes"] {
  outline: 2px solid var(--tvt-blue);
  outline-offset: 2px;
}

.page-products .eff-bars {
  display: block;
}

.page-products .eff-set {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .eff-set--minutes {
  display: none;
}

.page-products #eff-minutes:checked ~ .eff-bars .eff-set--goals {
  display: none;
}

.page-products #eff-minutes:checked ~ .eff-bars .eff-set--minutes {
  display: grid;
}

.page-products .eff-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  align-items: center;
  border-bottom: 1px solid var(--hair);
  padding-bottom: 10px;
}

.page-products .eff-row__name {
  font-size: 13px;
  color: var(--pp-sub);
  font-family: var(--font-mono);
  letter-spacing: .04em;
}

.page-products .eff-row__track {
  display: block;
  height: 9px;
  background-color: rgba(143, 167, 155, .16);
  overflow: hidden;
}

.page-products .eff-row__fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--tvt-blue), var(--tvt-lime));
  transition: width var(--t-slow) var(--ease);
}

.page-products .eff-row--a { --eff-goals: 100%; --eff-mins: 100%; }
.page-products .eff-row--b { --eff-goals: 89%;  --eff-mins: 92%; }
.page-products .eff-row--c { --eff-goals: 79%;  --eff-mins: 87%; }
.page-products .eff-row--d { --eff-goals: 74%;  --eff-mins: 76%; }
.page-products .eff-row--e { --eff-goals: 63%;  --eff-mins: 58%; }

.page-products .eff-set--goals .eff-row__fill { width: var(--eff-goals); }
.page-products .eff-set--minutes .eff-row__fill { width: var(--eff-mins); }

.page-products .eff-row__value {
  font-size: 14px;
  font-weight: 600;
  color: var(--pp-accent);
  justify-self: start;
}

.page-products .eff-switch__note {
  margin: 16px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--tvt-sage);
}

/* ---------- 03 教练时间线 ---------- */
.page-products .coach-line {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  border-left: 1px solid rgba(10, 13, 11, .2);
}

.page-products .coach-line__item {
  position: relative;
  padding: 0 0 4px 22px;
}

.page-products .coach-line__summary {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  padding: 12px 0;
  cursor: pointer;
  list-style: none;
}

.page-products .coach-line__summary::-webkit-details-marker {
  display: none;
}

.page-products .coach-line__node {
  position: absolute;
  left: -27px;
  top: 19px;
  width: 11px;
  height: 11px;
  background-color: var(--tvt-orange);
  transform: rotate(45deg);
  transition: transform var(--t-mid) var(--ease), background-color var(--t-mid) var(--ease);
}

.page-products .coach-line__item[open] .coach-line__node {
  background-color: var(--tvt-deep);
  transform: rotate(45deg) scale(1.25);
}

.page-products .coach-line__summary:hover .coach-line__node {
  transform: rotate(45deg) scale(1.25);
}

.page-products .coach-line__stage {
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--tvt-orange);
}

.page-products .coach-line__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(19px, 2.1vw, 24px);
  line-height: 1.1;
  color: var(--tvt-deep);
}

.page-products .coach-line__panel {
  padding: 0 0 20px 0;
  max-width: 62ch;
}

.page-products .coach-line__panel p {
  margin: 0 0 8px;
  font-size: 15px;
  line-height: 1.75;
  color: #45564b;
}

.page-products .coach-line__meta {
  font-size: 12px;
  letter-spacing: .05em;
  color: #6d7c72;
}

/* ---------- 04 青训阶梯 ---------- */
.page-products .youth-ladder {
  display: grid;
  gap: 8px;
}

.page-products .youth-step {
  border-left: 3px solid var(--tvt-blue);
  background-color: rgba(46, 123, 255, .06);
  padding: 0 14px;
  transition: border-color var(--t-mid) var(--ease), background-color var(--t-mid) var(--ease);
}

.page-products .youth-step:nth-child(2) { border-left-color: #4f93ff; }
.page-products .youth-step:nth-child(3) { border-left-color: #7aaeff; }
.page-products .youth-step:nth-child(4) { border-left-color: var(--tvt-lime); }
.page-products .youth-step:nth-child(5) { border-left-color: var(--tvt-orange); }

.page-products .youth-step[open] {
  background-color: rgba(46, 123, 255, .12);
}

.page-products .youth-step__summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  padding: 13px 0;
  cursor: pointer;
  list-style: none;
}

.page-products .youth-step__summary::-webkit-details-marker {
  display: none;
}

.page-products .youth-step__age {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--pp-fg);
  min-width: 52px;
}

.page-products .youth-step__level {
  font-size: 12.5px;
  color: var(--pp-sub);
  letter-spacing: .04em;
}

.page-products .youth-step__cue {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--tvt-sage);
}

.page-products .youth-step[open] .youth-step__cue {
  color: var(--tvt-lime);
}

.page-products .youth-step__desc {
  margin: 0 0 16px;
  max-width: 64ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--pp-sub);
}

/* ---------- 06 更新节奏 ---------- */
.page-products .cycle-line {
  display: grid;
  gap: 22px;
  margin: clamp(26px, 4vw, 46px) 0 0;
  padding: 0;
  list-style: none;
}

.page-products .cycle-line__row {
  display: grid;
  gap: 10px;
}

.page-products .cycle-line__when {
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--tvt-lime);
}

.page-products .cycle-line__track {
  position: relative;
  display: block;
  height: 2px;
  background-color: rgba(207, 201, 184, .22);
}

.page-products .cycle-line__mark {
  position: absolute;
  top: 50%;
  width: 12px;
  height: 12px;
  background-color: var(--tvt-lime);
  transform: translate(-50%, -50%);
}

.page-products .cycle-line__row--a .cycle-line__mark { left: 10%; }
.page-products .cycle-line__row--b .cycle-line__mark { left: 46%; }
.page-products .cycle-line__row--c .cycle-line__mark { left: 86%; background-color: var(--tvt-orange); }

.page-products .cycle-line__what {
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--tvt-paper);
}

.page-products .cycle-media {
  margin: clamp(30px, 4.4vw, 52px) 0 0;
}

.page-products .cycle-foot {
  margin-top: clamp(26px, 3.6vw, 40px);
  padding-top: 22px;
  border-top: 1px solid var(--hair);
}

.page-products .cycle-foot p {
  margin: 0 0 16px;
  max-width: 70ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--tvt-paper);
}

.page-products .cycle-foot__back {
  margin: 0;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-products .eff-row {
    grid-template-columns: minmax(110px, 150px) 1fr 64px;
    gap: 14px;
  }

  .page-products .eff-row__value {
    justify-self: end;
  }

  .page-products .cycle-line__row {
    grid-template-columns: 200px 1fr;
    align-items: center;
    gap: 22px;
  }

  .page-products .cycle-line__track {
    order: 3;
    grid-column: 1 / -1;
  }

  .page-products .cycle-line__what {
    grid-column: 2;
  }
}

@media (min-width: 900px) {
  .page-products .feature-panel {
    grid-template-columns: minmax(190px, 262px) minmax(0, 1fr);
    align-items: start;
  }

  .page-products .feature-panel__rail {
    position: sticky;
    top: clamp(20px, 4vw, 40px);
  }

  .page-products .youth-step:nth-child(1) { width: 62%; }
  .page-products .youth-step:nth-child(2) { width: 71%; }
  .page-products .youth-step:nth-child(3) { width: 80%; }
  .page-products .youth-step:nth-child(4) { width: 89%; }
  .page-products .youth-step:nth-child(5) { width: 98%; }

  .page-products .cycle-line__row {
    grid-template-columns: 210px 1fr 1fr;
  }

  .page-products .cycle-line__track {
    order: 0;
    grid-column: 2;
  }

  .page-products .cycle-line__what {
    grid-column: 3;
  }
}

@media (min-width: 1180px) {
  .page-products .feature-panel__body {
    padding-right: clamp(0px, 2vw, 28px);
  }

  .page-products .round-scale__item {
    min-width: 52px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .jump-bar__link,
  .page-products .eff-switch__tab,
  .page-products .eff-row__fill,
  .page-products .coach-line__node,
  .page-products .youth-step {
    transition: none;
  }
}