.page-products {
  --pd-pad: clamp(48px, 7vw, 96px);
  --pd-gap: clamp(20px, 3vw, 40px);
  --pd-hair: 1px solid var(--line-soft);
  --pd-plate: rgba(22, 41, 74, 0.55);
  background: var(--navy);
  color: var(--paper);
  overflow-x: hidden;
}

.page-products h1,
.page-products h2,
.page-products h3 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0;
}

.page-products p {
  margin: 0;
}

.page-products figure {
  margin: 0;
}

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

.page-products .visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 面包屑 ---------- */
.page-products .breadcrumb {
  padding-top: 96px;
}

/* ---------- 首屏 ---------- */
.page-products .hero {
  padding-top: clamp(18px, 3vw, 36px);
  padding-bottom: clamp(36px, 5vw, 72px);
}

.page-products .hero__grid {
  display: grid;
  gap: var(--pd-gap);
}

.page-products .hero__copy .eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--teal);
  text-transform: uppercase;
  margin-bottom: 14px;
}

.page-products .hero h1 {
  font-size: clamp(44px, 9vw, 96px);
  line-height: 0.94;
  margin-bottom: 20px;
}

.page-products .hero .lede {
  max-width: 44ch;
  font-size: var(--step-18);
  line-height: 1.75;
  color: var(--mist);
}

.page-products .hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-products .hero__device {
  position: relative;
  padding: clamp(10px, 2vw, 18px);
  border: 1px solid var(--line);
  background: var(--pd-plate);
}

.page-products .hero__device img {
  border: 1px solid var(--line-soft);
}

.page-products .hero__caption {
  display: block;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mist);
  text-transform: uppercase;
}

/* ---------- 按钮 ---------- */
.page-products .btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-decoration: none;
  border-radius: 2px;
  border: 1px solid transparent;
  transition: transform 0.18s var(--ease), background 0.18s var(--ease),
    color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-products .btn--solid {
  background: var(--yellow);
  border-color: var(--yellow);
  color: var(--ink-on-paper);
}

.page-products .btn--solid:hover {
  transform: translateY(-2px);
  background: var(--orange);
  border-color: var(--orange);
}

.page-products .btn--ghost {
  background: transparent;
  border-color: var(--teal-deep);
  color: var(--paper);
}

.page-products .btn--ghost:hover {
  transform: translateY(-2px);
  border-color: var(--teal);
  color: var(--teal);
}

.page-products .btn:focus-visible {
  outline: 2px solid var(--yellow);
  outline-offset: 3px;
}

/* ---------- 数字节奏带 ---------- */
.page-products .rhythm {
  padding-block: clamp(22px, 3vw, 40px);
  background: var(--ink-900);
  border-block: 1px solid var(--line);
}

.page-products .rhythm__row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: clamp(14px, 3vw, 44px);
  padding-block: clamp(12px, 2vw, 20px);
  border-bottom: 1px solid var(--line-soft);
}

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

.page-products .rhythm__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(62px, 15vw, 148px);
  line-height: 0.78;
  letter-spacing: -0.03em;
  color: var(--teal);
}

.page-products .rhythm__row:nth-child(2) .rhythm__num {
  color: var(--yellow);
}

.page-products .rhythm__row:nth-child(3) .rhythm__num {
  color: var(--orange);
}

.page-products .rhythm__label {
  font-size: var(--step-18);
  line-height: 1.65;
  color: var(--paper);
  max-width: 38ch;
}

/* ---------- 章节通用 ---------- */
.page-products .sec {
  padding-block: var(--pd-pad);
}

.page-products .sec__head {
  max-width: 62ch;
  margin-bottom: clamp(24px, 3.5vw, 44px);
}

.page-products .sec__index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal);
}

.page-products .sec__title {
  font-size: clamp(30px, 5.4vw, 58px);
  line-height: 1.02;
  margin: 12px 0 16px;
}

.page-products .sec__lede {
  font-size: var(--step-18);
  line-height: 1.75;
  color: var(--mist);
  max-width: 46ch;
}

.page-products .band {
  height: 12px;
  background: linear-gradient(
    90deg,
    var(--teal) 0 33.4%,
    var(--yellow) 33.4% 66.7%,
    var(--orange) 66.7% 100%
  );
}

/* ---------- 五件事 ---------- */
.page-products .duties {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-products .duties__item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: clamp(12px, 2vw, 28px);
  padding-block: clamp(16px, 2.6vw, 26px);
  border-top: 1px solid var(--line-soft);
  transition: transform 0.18s var(--ease);
}

.page-products .duties__item:hover {
  transform: translateX(4px);
}

.page-products .duties__idx {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--teal);
  padding-top: 5px;
}

.page-products .duties__title {
  font-size: var(--step-24);
  margin-bottom: 8px;
}

.page-products .duties__text {
  font-size: var(--step-18);
  line-height: 1.75;
  color: var(--mist);
  max-width: 54ch;
}

/* ---------- 联赛轨道 ---------- */
.page-products .track {
  display: grid;
  gap: 22px;
}

.page-products .track__rail {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 10px;
  scrollbar-width: thin;
}

.page-products .track__btn {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  padding: 9px 12px;
  border: 1px solid var(--line-soft);
  border-radius: 2px;
  background: transparent;
  color: var(--mist);
  cursor: pointer;
  text-align: left;
  white-space: nowrap;
  transition: transform 0.18s var(--ease), background 0.18s var(--ease),
    color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-products .track__btn:hover {
  color: var(--paper);
  border-color: var(--teal-deep);
  transform: translateY(-2px);
}

.page-products .track__btn:focus-visible {
  outline: 2px solid var(--yellow);
  outline-offset: 2px;
}

.page-products .track__btn[aria-pressed="true"] {
  background: var(--yellow);
  border-color: var(--yellow);
  color: var(--ink-on-paper);
  font-weight: 600;
  transform: translateX(6px);
}

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

.page-products .feed__item {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
  transition: background 0.18s var(--ease), padding-left 0.18s var(--ease);
}

.page-products .feed__item:hover {
  background: rgba(46, 211, 194, 0.07);
  padding-left: 10px;
}

.page-products .feed__item[hidden] {
  display: none;
}

.page-products .feed__tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--teal);
}

.page-products .feed__title {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: var(--step-18);
  line-height: 1.55;
}

.page-products .feed__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-products .track__hint {
  margin-top: 16px;
  font-size: var(--step-14);
  line-height: 1.7;
  color: var(--mist);
  border-left: 2px solid var(--teal-deep);
  padding-left: 12px;
}

/* ---------- 图版 ---------- */
.page-products .plate {
  border: 1px solid var(--line);
  background: var(--pd-plate);
  padding: 10px;
}

.page-products .plate img {
  width: 100%;
  border: 1px solid var(--line-soft);
}

.page-products .plate__cap {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

/* ---------- 折叠分组 ---------- */
.page-products .folds__layout {
  display: grid;
  gap: var(--pd-gap);
}

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

.page-products .fold {
  border: 1px solid var(--line-soft);
  background: rgba(5, 13, 26, 0.55);
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-products .fold[open] {
  border-color: var(--teal-deep);
  background: rgba(22, 41, 74, 0.6);
}

.page-products .fold__head {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr) auto 14px;
  align-items: center;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-products .fold__head::marker {
  content: "";
}

.page-products .fold__head::after {
  content: "";
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 8px solid var(--yellow);
  transition: transform 0.2s var(--ease);
}

.page-products .fold[open] .fold__head::after {
  transform: rotate(180deg);
}

.page-products .fold__head:focus-visible {
  outline: 2px solid var(--yellow);
  outline-offset: -2px;
}

.page-products .fold__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--teal);
}

.page-products .fold__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--step-18);
  letter-spacing: -0.01em;
}

.page-products .fold__meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--mist);
  white-space: nowrap;
}

.page-products .fold__body {
  padding: 0 16px 18px 52px;
}

.page-products .fold__body p {
  font-size: var(--step-14);
  line-height: 1.8;
  color: var(--mist);
  max-width: 58ch;
}

.page-products .fold__body a {
  color: var(--teal);
  text-underline-offset: 3px;
}

/* ---------- 对照表 ---------- */
.page-products .table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  background: var(--ink-900);
  -webkit-overflow-scrolling: touch;
}

.page-products .ctable {
  width: 100%;
  min-width: 660px;
  border-collapse: collapse;
  font-size: var(--step-14);
  color: var(--paper);
}

.page-products .ctable th {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  text-align: left;
  padding: 14px 16px;
  color: var(--yellow);
  background: var(--ink-900);
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

.page-products .ctable td {
  padding: 16px;
  line-height: 1.7;
  vertical-align: top;
  border-bottom: 1px solid var(--line-soft);
}

.page-products .ctable tbody tr:nth-child(odd) td {
  background: rgba(22, 41, 74, 0.72);
}

.page-products .ctable tbody tr:nth-child(even) td {
  background: rgba(5, 13, 26, 0.75);
}

.page-products .ctable tbody tr:hover td {
  background: rgba(46, 211, 194, 0.16);
}

.page-products .ctable tbody tr:focus-within td {
  background: rgba(244, 198, 63, 0.18);
}

.page-products .ctable tbody tr:focus-visible {
  outline: 2px solid var(--yellow);
  outline-offset: -2px;
}

.page-products .ctable td:first-child {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--teal);
  white-space: nowrap;
}

.page-products .compare__note {
  margin-top: 18px;
  padding-left: 14px;
  border-left: 2px solid var(--orange);
  font-size: var(--step-18);
  line-height: 1.75;
  color: var(--paper);
  max-width: 52ch;
}

.page-products .compare__figure {
  margin-top: clamp(22px, 3vw, 36px);
}

/* ---------- 更新时间 ---------- */
.page-products .times {
  display: grid;
  gap: clamp(18px, 2.6vw, 28px);
}

.page-products .time-card {
  border-top: 2px solid var(--orange);
  padding-top: 14px;
}

.page-products .time-card__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(40px, 8vw, 72px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-products .time-card__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--yellow);
  margin: 10px 0 8px;
}

.page-products .time-card__text {
  font-size: var(--step-14);
  line-height: 1.8;
  color: var(--mist);
}

.page-products .times__figure {
  margin-top: clamp(24px, 3vw, 40px);
}

.page-products .times__hint {
  margin-top: 18px;
  font-size: var(--step-14);
  line-height: 1.8;
  color: var(--mist);
  max-width: 60ch;
}

/* ---------- 三步上手 ---------- */
.page-products .steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-products .steps__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(14px, 3vw, 34px);
  padding-block: clamp(18px, 2.8vw, 30px);
  border-top: 1px solid var(--line-soft);
}

.page-products .steps__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(28px, 5vw, 40px);
  line-height: 1;
  color: var(--yellow);
}

.page-products .steps__title {
  font-size: var(--step-24);
  margin-bottom: 8px;
}

.page-products .steps__text {
  font-size: var(--step-18);
  line-height: 1.75;
  color: var(--mist);
  max-width: 54ch;
}

.page-products .steps__text a {
  color: var(--teal);
  text-underline-offset: 3px;
}

.page-products .closing__band {
  display: grid;
  gap: 18px;
  margin-top: clamp(28px, 4vw, 48px);
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.page-products .closing__text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(24px, 3.6vw, 40px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  max-width: 24ch;
}

.page-products .closing__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 中等屏 ---------- */
@media (min-width: 700px) {
  .page-products .times {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-products .hero__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.85fr);
    align-items: end;
    gap: clamp(30px, 5vw, 70px);
  }

  .page-products .duties__item {
    grid-template-columns: 56px minmax(0, 1fr);
  }

  .page-products .track {
    grid-template-columns: 118px 200px minmax(0, 1fr);
    grid-template-areas: "rail fig feed";
    align-items: start;
    gap: clamp(22px, 3vw, 44px);
  }

  .page-products .track__rail {
    grid-area: rail;
    flex-direction: column;
    overflow-x: hidden;
    overflow-y: auto;
    max-height: calc(100vh - 150px);
    position: sticky;
    top: 110px;
    padding-bottom: 0;
  }

  .page-products .track__btn {
    width: 100%;
    white-space: normal;
  }

  .page-products .track__figure {
    grid-area: fig;
  }

  .page-products .track__panel {
    grid-area: feed;
  }

  .page-products .folds__layout {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
    align-items: start;
    gap: clamp(26px, 4vw, 56px);
  }

  .page-products .folds__figure {
    position: sticky;
    top: 110px;
  }

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

/* ---------- 窄屏收口 ---------- */
@media (max-width: 560px) {
  .page-products .fold__meta {
    display: none;
  }

  .page-products .fold__head {
    grid-template-columns: 22px minmax(0, 1fr) 14px;
  }

  .page-products .fold__body {
    padding-left: 16px;
  }

  .page-products .rhythm__num {
    font-size: clamp(56px, 22vw, 90px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .btn,
  .page-products .duties__item,
  .page-products .track__btn,
  .page-products .feed__item,
  .page-products .fold,
  .page-products .fold__head::after {
    transition: none;
  }

  .page-products .duties__item:hover,
  .page-products .btn:hover,
  .page-products .track__btn:hover,
  .page-products .track__btn[aria-pressed="true"] {
    transform: none;
  }
}