.page-products {
  --pp-edge: 18px;
  --pp-accent: var(--violet);
  background: var(--navy);
  color: var(--mist);
  overflow-x: hidden;
}

.page-products img {
  max-width: 100%;
  height: auto;
}

@media (min-width: 768px) {
  .page-products {
    --pp-edge: 32px;
  }
}

@media (min-width: 1280px) {
  .page-products {
    --pp-edge: 48px;
  }
}

/* ---------- 首屏 ---------- */
.page-products .pp-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(88px, 12vh, 128px) 56px;
  border-bottom: 1px solid var(--grid);
  background: var(--ink);
}

.page-products .pp-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(30, 58, 80, 0.6) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30, 58, 80, 0.6) 1px, transparent 1px);
  background-size: 96px 96px;
  pointer-events: none;
}

.page-products .pp-hero .container {
  position: relative;
}

.page-products .pp-hero-grid {
  display: grid;
  gap: 32px;
  margin-top: 24px;
}

@media (min-width: 960px) {
  .page-products .pp-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: end;
  }
}

.page-products .pp-hero-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 6vw, 68px);
  line-height: 1.08;
  letter-spacing: 0.02em;
  margin: 12px 0 20px;
}

.page-products .pp-hero-copy .lede {
  max-width: 34em;
  color: var(--muted);
}

.page-products .pp-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-products .pp-hero-note {
  margin-top: 20px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  max-width: 34em;
}

.page-products .pp-hero-note a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-products .pp-version-card {
  position: relative;
  border: 1px solid var(--grid);
  background: var(--navy);
  padding: 20px;
}

.page-products .pp-version-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--violet), var(--cyan));
}

.page-products .pp-version-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--grid);
}

.page-products .pp-version-code {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  color: var(--cyan);
  line-height: 1;
}

.page-products .pp-version-state {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold);
  border: 1px solid var(--gold);
  padding: 3px 8px;
}

.page-products .pp-readouts {
  list-style: none;
  margin: 0;
  padding: 16px 0 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.page-products .pp-readout-num {
  display: block;
  font-size: 26px;
  line-height: 1.1;
  color: var(--mist);
}

.page-products .pp-readout-label {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  color: var(--muted);
}

.page-products .pp-version-foot {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--grid);
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 通用章节 ---------- */
.page-products .pp-section {
  padding-block: 56px;
  border-bottom: 1px solid var(--grid);
}

@media (min-width: 900px) {
  .page-products .pp-section {
    padding-block: 88px;
  }
}

.page-products .pp-sec-head {
  max-width: 46em;
  margin-bottom: 28px;
}

.page-products .pp-sec-head h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 3.4vw, 40px);
  line-height: 1.18;
  letter-spacing: 0.02em;
  margin: 12px 0 14px;
}

.page-products .pp-sec-lede {
  font-size: 16px;
  line-height: 1.75;
  color: var(--muted);
  max-width: 38em;
}

/* ---------- 01 矩阵 ---------- */
.page-products .pp-matrix-kicker {
  display: inline-block;
  margin: 0 0 18px;
  padding-left: 12px;
  border-left: 2px solid var(--violet);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-products .pp-matrix-wrap {
  position: relative;
  border: 1px solid var(--grid);
  padding: 16px;
  overflow: hidden;
}

@media (min-width: 900px) {
  .page-products .pp-matrix-wrap {
    padding: 24px;
  }
}

.page-products .pp-matrix-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.14;
  pointer-events: none;
}

.page-products .pp-matrix-grid {
  position: relative;
  display: grid;
  gap: 20px;
}

@media (min-width: 720px) {
  .page-products .pp-matrix-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1180px) {
  .page-products .pp-matrix-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-products .pp-family-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 15px;
  letter-spacing: 0.08em;
  padding-bottom: 12px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--grid);
}

.page-products .pp-family-key {
  font-size: 12px;
  color: var(--violet);
}

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

.page-products .pp-line {
  display: grid;
  gap: 8px;
  padding: 14px;
  border: 1px solid var(--grid);
  background: rgba(6, 18, 32, 0.72);
  transition: border-color 0.22s var(--ease), transform 0.22s var(--ease),
    background-color 0.22s var(--ease);
}

.page-products .pp-line:hover,
.page-products .pp-line:focus-within {
  border-color: var(--violet);
  background: var(--ink);
  transform: translateY(-2px);
}

.page-products .pp-line-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--mist);
}

.page-products .pp-line-desc {
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.page-products .pp-line-chip {
  justify-self: start;
  font-size: 11px;
  opacity: 0.62;
  transition: opacity 0.22s var(--ease);
}

.page-products .pp-line:hover .pp-line-chip,
.page-products .pp-line:focus-within .pp-line-chip {
  opacity: 1;
}

/* ---------- 02 族群走廊 ---------- */
.page-products .pp-rail {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  padding: 4px var(--pp-edge) 20px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-products .pp-rail-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 0 0 84%;
  padding: 22px;
  border: 1px solid var(--grid);
  background: var(--ink);
  scroll-snap-align: start;
  transition: border-color 0.22s var(--ease), transform 0.22s var(--ease);
}

.page-products .pp-rail-card:nth-child(1) {
  border-top: 2px solid var(--cyan);
}

.page-products .pp-rail-card:nth-child(2) {
  border-top: 2px solid var(--gold);
}

.page-products .pp-rail-card:nth-child(3) {
  border-top: 2px solid var(--violet);
}

.page-products .pp-rail-card:nth-child(4) {
  border-top: 2px solid var(--coral);
}

.page-products .pp-rail-card:hover {
  transform: translateY(-2px);
}

.page-products .pp-rail-card:nth-child(1):hover {
  border-color: var(--cyan);
}

.page-products .pp-rail-card:nth-child(2):hover {
  border-color: var(--gold);
}

.page-products .pp-rail-card:nth-child(3):hover {
  border-color: var(--violet);
}

.page-products .pp-rail-card:nth-child(4):hover {
  border-color: var(--coral);
}

@media (min-width: 900px) {
  .page-products .pp-rail-card {
    flex: 0 0 30%;
  }

  .page-products .pp-rail-card:nth-child(1) {
    flex: 0 0 36%;
  }

  .page-products .pp-rail-card:nth-child(3) {
    flex: 0 0 26%;
  }
}

.page-products .pp-rail-key {
  font-size: 22px;
  color: var(--muted);
  line-height: 1;
}

.page-products .pp-rail-title {
  font-family: var(--font-display);
  font-size: 20px;
  letter-spacing: 0.04em;
}

.page-products .pp-rail-desc {
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-products .pp-rail-tags {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-products .pp-rail-tags li {
  font-size: 12px;
  padding: 4px 8px;
  border: 1px solid var(--grid);
  color: var(--mist);
}

.page-products .pp-rail-note {
  margin-top: auto;
  font-size: 13px;
  color: var(--cyan);
}

.page-products .pp-rail-hint {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

/* ---------- 03 版本 ---------- */
.page-products .pp-version-grid {
  display: grid;
  gap: 28px;
}

@media (min-width: 960px) {
  .page-products .pp-version-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 44px;
    align-items: start;
  }
}

.page-products .pp-version-media {
  margin: 0;
}

.page-products .pp-version-media img {
  display: block;
  width: 100%;
  border: 1px solid var(--grid);
}

.page-products .pp-version-body h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.2;
  letter-spacing: 0.02em;
  margin: 12px 0 14px;
}

.page-products .pp-tabs {
  margin-top: 24px;
}

.page-products .pp-tabbar {
  display: flex;
  gap: 20px;
  border-bottom: 1px solid var(--grid);
  margin-bottom: 20px;
}

.page-products .pp-tab {
  background: none;
  border: 0;
  border-bottom: 2px solid transparent;
  padding: 10px 2px;
  font-family: var(--font-body);
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--muted);
  cursor: pointer;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-products .pp-tab:hover {
  color: var(--mist);
}

.page-products .pp-tab[aria-selected="true"] {
  color: var(--mist);
  border-bottom-color: var(--violet);
}

.page-products .pp-tab:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-products .pp-change-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-products .pp-change-list li {
  border-left: 2px solid var(--violet);
  padding-left: 16px;
}

.page-products .pp-change-list h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--mist);
}

.page-products .pp-change-list p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

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

.page-products .pp-pace-list li {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-products .pp-pace-list .mono {
  font-size: 13px;
  color: var(--gold);
}

.page-products .pp-timeline {
  margin: 36px 0 0;
}

.page-products .pp-timeline img {
  display: block;
  width: 100%;
  border: 1px solid var(--grid);
}

/* ---------- 04 五步 ---------- */
.page-products .pp-install-grid {
  display: grid;
  gap: 32px;
}

@media (min-width: 960px) {
  .page-products .pp-install-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: start;
  }
}

.page-products .pp-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-products .pp-step {
  position: relative;
}

.page-products .pp-step:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 39px;
  bottom: -12px;
  width: 1px;
  height: 12px;
  background: var(--grid);
}

.page-products .pp-step-details {
  border: 1px solid var(--grid);
  background: rgba(11, 29, 51, 0.72);
  transition: border-color 0.22s var(--ease);
}

.page-products .pp-step-details[open] {
  border-color: var(--violet);
}

.page-products .pp-step-details summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 16px;
}

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

.page-products .pp-step-details summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-products .pp-step-num {
  font-size: 14px;
  text-align: center;
  padding: 6px 0;
  border: 1px solid var(--grid);
  color: var(--violet);
}

.page-products .pp-step-details[open] .pp-step-num {
  border-color: var(--violet);
  color: var(--cyan);
}

.page-products .pp-step-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--mist);
}

.page-products .pp-step-flag {
  font-size: 11px;
  padding: 3px 6px;
  border: 1px solid var(--grid);
  color: var(--muted);
}

.page-products .pp-step-details[open] .pp-step-flag {
  border-color: var(--gold);
  color: var(--gold);
}

.page-products .pp-step-body {
  padding: 0 16px 18px;
}

@media (min-width: 600px) {
  .page-products .pp-step-body {
    padding-left: 74px;
  }
}

.page-products .pp-step-body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-products .pp-step-tip {
  margin-top: 12px !important;
  padding-top: 12px;
  border-top: 1px dashed var(--grid);
  color: var(--mist) !important;
}

.page-products .pp-install-media {
  margin: 0;
}

.page-products .pp-install-media img {
  display: block;
  width: 100%;
  border: 1px solid var(--grid);
}

@media (min-width: 960px) {
  .page-products .pp-install-media {
    position: sticky;
    top: 96px;
  }
}

/* ---------- 05 兼容 ---------- */
.page-products .pp-compat-grid {
  display: grid;
  gap: 32px;
}

@media (min-width: 960px) {
  .page-products .pp-compat-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: center;
  }
}

.page-products .pp-scale {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--grid);
}

@media (min-width: 680px) {
  .page-products .pp-scale {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

.page-products .pp-scale-item {
  position: relative;
  padding: 16px 12px 18px;
  border-left: 1px solid var(--grid);
  border-bottom: 1px solid var(--grid);
}

.page-products .pp-scale-item::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 0;
  width: 1px;
  height: 10px;
  background: var(--gold);
}

.page-products .pp-scale-key {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  color: var(--gold);
}

.page-products .pp-scale-desc {
  display: block;
  font-size: 12px;
  line-height: 1.65;
  color: var(--muted);
}

.page-products .pp-env {
  margin: 24px 0 0;
  display: grid;
  gap: 12px;
}

.page-products .pp-env > div {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
}

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

.page-products .pp-env dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-products .pp-compat-media {
  margin: 0;
}

.page-products .pp-compat-media img {
  display: block;
  width: 100%;
  border: 1px solid var(--grid);
}

/* ---------- 06 权益 ---------- */
.page-products .pp-table-wrap {
  border: 1px solid var(--grid);
  overflow-x: auto;
}

.page-products .pp-table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-products .pp-table-caption {
  text-align: left;
  padding: 14px 16px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
  border-bottom: 1px solid var(--grid);
}

.page-products .pp-table th,
.page-products .pp-table td {
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--grid);
}

.page-products .pp-table thead th {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--gold);
  background: var(--ink);
}

.page-products .pp-table tbody th {
  font-weight: 700;
  color: var(--mist);
  white-space: nowrap;
}

.page-products .pp-table tbody td {
  color: var(--muted);
  line-height: 1.65;
}

.page-products .pp-table tbody tr:hover th,
.page-products .pp-table tbody tr:hover td {
  background: rgba(139, 108, 240, 0.1);
  color: var(--mist);
}

.page-products .pp-rights-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  margin-top: 20px;
}

.page-products .pp-rights-foot p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
  max-width: 46em;
}

/* ---------- 收尾 ---------- */
.page-products .pp-outro {
  padding-block: 48px 72px;
}

.page-products .pp-outro-grid {
  display: grid;
  gap: 12px;
}

@media (min-width: 720px) {
  .page-products .pp-outro-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-products .pp-outro-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-products .pp-outro-link {
  display: grid;
  gap: 6px;
  padding: 18px;
  border: 1px solid var(--grid);
  color: var(--mist);
  text-decoration: none;
  transition: border-color 0.22s var(--ease), transform 0.22s var(--ease);
}

.page-products .pp-outro-link:hover,
.page-products .pp-outro-link:focus-visible {
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.page-products .pp-outro-link .mono {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-products .pp-outro-link strong {
  font-size: 15px;
}

.page-products .pp-outro-link > span:last-child {
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pp-line,
  .page-products .pp-rail-card,
  .page-products .pp-outro-link,
  .page-products .pp-step-details {
    transition: none;
  }

  .page-products .pp-line:hover,
  .page-products .pp-line:focus-within,
  .page-products .pp-rail-card:hover,
  .page-products .pp-outro-link:hover {
    transform: none;
  }
}