.page-products {
  --pp-panel: var(--ink-800);
  --pp-line: var(--grid-line);
  --pp-orange: var(--signal-orange);
  --pp-teal: var(--teal-400);
  background: var(--ink-900);
  color: var(--text-primary);
  padding-bottom: clamp(48px, 6vw, 104px);
  overflow-x: hidden;
}

/* ---------- 顶部轮次轴 ---------- */
.page-products .pp-axis {
  border-top: 1px solid var(--pp-line);
  border-bottom: 1px solid var(--pp-line);
  background: linear-gradient(180deg, var(--ink-800), var(--ink-900));
}

.page-products .pp-axis__track {
  display: flex;
  align-items: stretch;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
  padding-left: clamp(20px, 4vw, 72px);
}

.page-products .pp-axis__track::-webkit-scrollbar {
  display: none;
}

.page-products .pp-axis__item {
  scroll-snap-align: start;
  flex: 0 0 auto;
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 15px 20px 14px;
  border-right: 1px solid var(--pp-line);
  text-decoration: none;
  color: var(--text-muted);
  white-space: nowrap;
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-products .pp-axis__item:first-child {
  border-left: 1px solid var(--pp-line);
}

.page-products .pp-axis__num {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--pp-orange);
}

.page-products .pp-axis__label {
  font-size: 14px;
  font-weight: 600;
}

.page-products .pp-axis__item:hover,
.page-products .pp-axis__item:focus-visible {
  color: var(--gold-300);
  background: var(--ink-700);
}

.page-products .pp-axis__item[data-active="true"] {
  background: var(--gold-500);
  color: var(--ink-900);
}

.page-products .pp-axis__item[data-active="true"] .pp-axis__num {
  color: var(--ink-900);
}

/* ---------- 首屏 ---------- */
.page-products .pp-hero {
  padding: clamp(28px, 4vw, 56px) 0 clamp(32px, 4.5vw, 64px);
}

.page-products .pp-hero__frame {
  position: relative;
  border: 1px solid var(--pp-line);
  background:
    linear-gradient(180deg, rgba(11, 31, 25, 0.92), rgba(6, 19, 15, 0.55)),
    repeating-linear-gradient(90deg, rgba(30, 66, 55, 0.5) 0 1px, transparent 1px 48px);
  padding: clamp(22px, 3.4vw, 52px);
}

.page-products .pp-hero__frame::before,
.page-products .pp-hero__frame::after {
  content: "";
  position: absolute;
  width: 72px;
  height: 2px;
  background: var(--gold-500);
}

.page-products .pp-hero__frame::before {
  top: -1px;
  left: -1px;
}

.page-products .pp-hero__frame::after {
  bottom: -1px;
  right: -1px;
}

.page-products .eyebrow {
  display: block;
  margin: 18px 0 12px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--gold-300);
  text-transform: uppercase;
}

.page-products .pp-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 5.2vw, 62px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
  max-width: 20ch;
}

.page-products .pp-hero__lede {
  font-size: clamp(15px, 1.3vw, 17px);
  line-height: 1.9;
  color: var(--text-primary);
  max-width: 62ch;
  margin: 0 0 30px;
}

.page-products .pp-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--pp-line);
  background: var(--pp-line);
}

.page-products .pp-fact {
  background: var(--ink-900);
  padding: 16px 18px;
}

.page-products .pp-fact__num {
  display: block;
  font-size: 30px;
  line-height: 1;
  color: var(--gold-500);
  margin-bottom: 8px;
}

.page-products .pp-fact__label {
  font-size: 13px;
  color: var(--text-muted);
}

/* ---------- 章节骨架 ---------- */
.page-products .pp-section {
  padding: clamp(44px, 6vw, 88px) 0 0;
  border-top: 1px solid var(--pp-line);
  scroll-margin-top: 24px;
}

.page-products .pp-section--last {
  padding-bottom: clamp(20px, 3vw, 40px);
}

.page-products .section-head {
  margin-bottom: clamp(24px, 3vw, 40px);
}

.page-products .section-head__num {
  display: block;
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--pp-orange);
  margin-bottom: 10px;
}

.page-products .section-head__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.4vw, 42px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0 0 10px;
}

.page-products .section-head__note {
  margin: 0;
  font-size: 13px;
  color: var(--text-muted);
}

.page-products .pp-lede {
  font-size: 16px;
  line-height: 1.9;
  margin: 0 0 18px;
  max-width: 40ch;
}

.page-products .pp-lede--wide {
  max-width: 68ch;
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-products .pp-note {
  font-size: 13px;
  line-height: 1.8;
  margin: 18px 0 0;
}

.page-products .pp-link {
  color: var(--gold-300);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-products .pp-link:hover {
  color: var(--gold-500);
}

/* ---------- 通栏图 ---------- */
.page-products .pp-banner {
  margin: 0 0 clamp(24px, 3vw, 40px);
  border: 1px solid var(--pp-line);
}

.page-products .pp-banner .media-frame__img,
.page-products .pp-side-figure .media-frame__img,
.page-products .pp-ring .media-frame__img,
.page-products .pp-update__figure .media-frame__img,
.page-products .pp-card__media .media-frame__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 功能矩阵（不等宽） ---------- */
.page-products .pp-matrix {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}

.page-products .pp-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--pp-panel);
  border: 1px solid var(--pp-line);
  padding: clamp(20px, 2.4vw, 30px);
}

.page-products .pp-card .badge {
  align-self: flex-start;
  font-size: 11px;
  letter-spacing: 0.1em;
}

.page-products .pp-card .panel__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 1.8vw, 24px);
  margin: 0;
  letter-spacing: -0.01em;
}

.page-products .pp-card__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-primary);
}

.page-products .pp-card__media {
  border: 1px solid var(--pp-line);
  max-width: 260px;
  margin: 4px 0 0;
}

.page-products .pp-arrows {
  width: 120px;
  height: 40px;
  margin: 2px 0;
}

.page-products .pp-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.page-products .pp-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-muted);
}

.page-products .pp-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 1px;
  background: var(--gold-500);
}

.page-products .pp-list strong {
  color: var(--gold-300);
  font-weight: 600;
}

/* ---------- 价格：左右分栏 + 表格 ---------- */
.page-products .pp-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
  margin-bottom: clamp(24px, 3vw, 38px);
}

.page-products .pp-split__main p {
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-primary);
  margin: 0 0 16px;
  max-width: 46ch;
}

.page-products .pp-checks {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--pp-line);
  border: 1px solid var(--pp-line);
}

.page-products .pp-checks li {
  display: flex;
  gap: 14px;
  align-items: baseline;
  background: var(--ink-900);
  padding: 14px 16px;
}

.page-products .pp-checks__key {
  flex: 0 0 auto;
  width: 26px;
  height: 26px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: var(--gold-500);
  border: 1px solid var(--gold-500);
  line-height: 1;
}

.page-products .pp-checks__text {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-muted);
}

.page-products .pp-checks__text strong {
  color: var(--text-primary);
  font-weight: 600;
}

.page-products .pp-side-figure {
  margin: 0;
  border: 1px solid var(--pp-line);
}

.page-products .pp-table-wrap {
  border: 1px solid var(--pp-line);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-products .pp-table {
  width: 100%;
  min-width: 600px;
  border-collapse: collapse;
}

.page-products .pp-table__caption {
  text-align: left;
  padding: 14px 16px 12px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--gold-300);
  border-bottom: 1px solid var(--pp-line);
  background: var(--ink-700);
}

.page-products .pp-table thead th {
  padding: 12px 16px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold-300);
  background: var(--ink-800);
  border-bottom: 1px solid var(--pp-line);
  font-weight: 500;
}

.page-products .pp-table tbody th {
  padding: 16px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--gold-500);
  border-bottom: 1px solid var(--pp-line);
  white-space: nowrap;
}

.page-products .pp-table tbody td {
  padding: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-primary);
  border-bottom: 1px solid var(--pp-line);
}

.page-products .pp-table tbody tr:nth-child(even) td,
.page-products .pp-table tbody tr:nth-child(even) th {
  background: rgba(18, 48, 39, 0.55);
}

.page-products .pp-table tbody tr:last-child th,
.page-products .pp-table tbody tr:last-child td {
  border-bottom: 0;
}

/* ---------- 周期 ---------- */
.page-products .pp-cycles {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
  margin-bottom: clamp(24px, 3vw, 38px);
}

.page-products .pp-cycle {
  border: 1px solid var(--pp-line);
  border-top-width: 3px;
  background: var(--pp-panel);
  padding: clamp(20px, 2.2vw, 28px);
}

.page-products .pp-cycle--q {
  border-top-color: var(--pp-teal);
}

.page-products .pp-cycle--h {
  border-top-color: var(--gold-500);
}

.page-products .pp-cycle--f {
  border-top-color: var(--pp-orange);
}

.page-products .pp-cycle__tag {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  border: 1px solid var(--pp-line);
  padding: 4px 10px;
  margin-bottom: 14px;
}

.page-products .pp-cycle__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(18px, 1.7vw, 22px);
  margin: 0 0 16px;
  letter-spacing: -0.01em;
}

.page-products .pp-cycle__meta {
  margin: 0;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 8px 14px;
  font-size: 14px;
  line-height: 1.7;
}

.page-products .pp-cycle__meta dt {
  color: var(--gold-300);
  font-size: 12px;
  letter-spacing: 0.06em;
  padding-top: 3px;
  white-space: nowrap;
}

.page-products .pp-cycle__meta dd {
  margin: 0;
  color: var(--text-muted);
}

.page-products .pp-ring {
  margin: 0;
  border: 1px solid var(--pp-line);
  max-width: 860px;
}

/* ---------- 规则说明 ---------- */
.page-products .pp-rules {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-products .pp-rule {
  border: 1px solid var(--pp-line);
  background: var(--pp-panel);
  transition: border-color var(--dur) var(--ease);
}

.page-products .pp-rule:hover {
  border-color: var(--gold-500);
}

.page-products .pp-rule summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

.page-products .pp-rule summary::-webkit-details-marker {
  display: none;
}

.page-products .pp-rule__ver {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ink-900);
  background: var(--gold-500);
  padding: 4px 8px;
  line-height: 1;
}

.page-products .pp-rule__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  color: var(--text-primary);
}

.page-products .pp-rule__hint {
  font-size: 13px;
  color: var(--text-muted);
  margin-left: auto;
  text-align: right;
}

.page-products .pp-rule[open] summary {
  border-bottom: 1px solid var(--pp-line);
}

.page-products .pp-rule__body {
  padding: 16px 18px 18px;
}

/* ---------- 更新节奏 ---------- */
.page-products .pp-update {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}

.page-products .pp-timeline {
  margin: 0;
  padding: 0 0 0 22px;
  list-style: none;
  border-left: 1px solid var(--pp-line);
  display: flex;
  flex-direction: column;
  gap: 26px;
}

.page-products .pp-timeline li {
  position: relative;
}

.page-products .pp-timeline__dot {
  position: absolute;
  left: -27px;
  top: 7px;
  width: 9px;
  height: 9px;
  background: var(--pp-orange);
  border: 1px solid var(--ink-900);
}

.page-products .pp-timeline h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  margin: 0 0 6px;
  letter-spacing: -0.01em;
}

.page-products .pp-timeline p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-muted);
  max-width: 42ch;
}

.page-products .pp-update__figure {
  margin: 0;
  border: 1px solid var(--pp-line);
}

/* ---------- 下一步 ---------- */
.page-products .pp-next {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-products .pp-next__card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(20px, 2.2vw, 28px);
  border: 1px solid var(--pp-line);
  background: var(--pp-panel);
  text-decoration: none;
  color: inherit;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-products .pp-next__card:hover,
.page-products .pp-next__card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--gold-500);
}

.page-products .pp-next__idx {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--pp-orange);
}

.page-products .pp-next__card h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  margin: 0;
  letter-spacing: -0.01em;
}

.page-products .pp-next__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-muted);
}

.page-products .pp-next__go {
  margin-top: auto;
  padding-top: 10px;
  font-size: 13px;
  color: var(--gold-300);
}

.page-products .pp-mailbox {
  display: flex;
  flex-direction: column;
  gap: 18px;
  align-items: flex-start;
  padding: clamp(20px, 2.4vw, 30px);
  border: 1px solid var(--gold-500);
  background: linear-gradient(120deg, rgba(200, 162, 80, 0.12), rgba(6, 19, 15, 0.2));
}

.page-products .pp-mailbox__text h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}

.page-products .pp-mailbox__text p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-muted);
  max-width: 62ch;
}

.page-products .pp-copy {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-products .pp-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 780px) {
  .page-products .pp-cycles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-products .pp-mailbox {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

@media (min-width: 960px) {
  .page-products .pp-matrix {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }

  .page-products .pp-card--a {
    grid-column: span 7;
  }

  .page-products .pp-card--b {
    grid-column: span 5;
  }

  .page-products .pp-card--c {
    grid-column: span 5;
  }

  .page-products .pp-card--d {
    grid-column: span 7;
  }

  .page-products .pp-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-products .pp-update {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-products .pp-lede {
    max-width: 42ch;
  }
}

@media (min-width: 1200px) {
  .page-products .pp-card--a,
  .page-products .pp-card--d {
    padding-right: clamp(30px, 3vw, 48px);
  }

  .page-products .pp-card--b,
  .page-products .pp-card--c {
    padding-left: clamp(28px, 2.8vw, 42px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pp-axis__item,
  .page-products .pp-rule,
  .page-products .pp-next__card {
    transition: none;
  }

  .page-products .pp-next__card:hover,
  .page-products .pp-next__card:focus-visible {
    transform: none;
  }
}