.page-products {
  --pp-line: var(--steel);
  --pp-gap: clamp(16px, 3vw, 28px);
  --pp-pad: clamp(20px, 3.5vw, 36px);
  --pp-card: var(--ink-800);
  display: block;
}

.page-products .pp-crumb {
  padding-block: 16px 6px;
}

/* ---------- 首屏 ---------- */
.page-products .pp-hero {
  position: relative;
  isolation: isolate;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pp-gap);
  padding-block: clamp(24px, 4.5vw, 56px) clamp(28px, 5vw, 60px);
}

.page-products .pp-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(to right, var(--ink-700) 1px, transparent 1px),
    linear-gradient(to bottom, var(--ink-700) 1px, transparent 1px);
  background-size: 72px 72px;
  opacity: 0.55;
  pointer-events: none;
}

.page-products .pp-hero__title {
  margin: 10px 0 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(28px, 5.4vw, 58px);
  line-height: 1.06;
  letter-spacing: -0.01em;
  color: var(--text);
  max-width: 22ch;
}

.page-products .pp-hero__lead {
  margin: 18px 0 0;
  max-width: 58ch;
  font-size: clamp(15px, 1.8vw, 17px);
  line-height: 1.8;
  color: var(--muted);
}

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

.page-products .pp-spec {
  align-self: start;
  background: var(--pp-card);
  border: 1px solid var(--pp-line);
  border-radius: var(--radius);
  padding: 18px 20px 12px;
}

.page-products .pp-spec__title {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--turf);
}

.page-products .pp-spec__row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 6px 14px;
  padding: 10px 0;
  font-size: 14px;
}

.page-products .pp-spec__row + .pp-spec__row {
  border-top: 1px solid var(--ink-700);
}

.page-products .pp-spec__label {
  color: var(--muted);
  letter-spacing: 0.06em;
}

.page-products .pp-spec__num {
  font-size: 20px;
  color: var(--amber);
  letter-spacing: 0.04em;
}

.page-products .pp-spec__val {
  color: var(--text);
  text-align: right;
}

/* ---------- 面板与章节头 ---------- */
.page-products .pp-panel {
  padding-block: var(--pp-pad);
  border-top: 1px solid var(--pp-line);
}

.page-products .pp-panel__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px 18px;
  align-items: start;
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-products .pp-idx {
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--turf);
  border: 1px solid var(--pp-line);
  border-radius: var(--radius);
  padding: 4px 8px;
  line-height: 1.2;
}

.page-products .pp-panel__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(22px, 3.6vw, 34px);
  line-height: 1.15;
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-products .pp-panel__sub {
  margin: 10px 0 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 图 ---------- */
.page-products .pp-figure {
  margin: 0;
  min-width: 0;
}

.page-products .pp-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  background: var(--ink-700);
  border: 1px solid var(--pp-line);
  border-radius: var(--radius);
}

.page-products .pp-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-products .pp-figure--wide img {
  aspect-ratio: 14 / 9;
}

.page-products .pp-figure--tall img {
  aspect-ratio: 3 / 2;
}

/* ---------- 安装步骤 ---------- */
.page-products .pp-install {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pp-gap);
  align-items: start;
}

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

.page-products .pp-step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  padding: 16px 0;
  border-top: 1px solid var(--ink-700);
}

.page-products .pp-step:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-products .pp-step__num {
  grid-row: 1 / span 2;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--cyan);
  padding-top: 3px;
}

.page-products .pp-step__title {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
}

.page-products .pp-step__text {
  margin: 6px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 四大分区 ---------- */
.page-products .pp-zones {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-top: var(--pp-gap);
}

.page-products .pp-zone {
  background: var(--pp-card);
  border: 1px solid var(--pp-line);
  border-left: 2px solid var(--cyan);
  border-radius: var(--radius);
  padding: 16px 18px;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-products .pp-zone:hover,
.page-products .pp-zone:focus-within {
  border-color: var(--turf);
  background: var(--ink-700);
}

.page-products .pp-zone__num {
  display: block;
  font-size: 18px;
  letter-spacing: 0.12em;
  color: var(--turf);
}

.page-products .pp-zone__title {
  margin: 8px 0 0;
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
}

.page-products .pp-zone__text {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 筛选 ---------- */
.page-products .pp-filter {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pp-gap);
  align-items: start;
}

.page-products .pp-filter__rows {
  min-width: 0;
}

.page-products .pp-filter__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 12px 0;
  border-top: 1px solid var(--ink-700);
}

.page-products .pp-filter__row:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-products .pp-filter__key {
  flex: 0 0 56px;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-products .pp-filter__input {
  flex: 1 1 180px;
  min-width: 0;
  border: 1px dashed var(--pp-line);
  border-radius: var(--radius);
  padding: 7px 10px;
  font-size: 13px;
  color: var(--muted);
}

.page-products .pp-note {
  margin: var(--pp-gap) 0 0;
  padding: 14px 18px;
  background: var(--ink-700);
  border-left: 2px solid var(--turf);
  border-radius: var(--radius);
  font-size: 14px;
  line-height: 1.78;
  color: var(--text);
}

/* ---------- 资料卡 ---------- */
.page-products .pp-files {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-bottom: var(--pp-gap);
}

.page-products .pp-file {
  background: var(--pp-card);
  border: 1px solid var(--pp-line);
  border-radius: var(--radius);
  padding: 18px;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-products .pp-file:hover,
.page-products .pp-file:focus-within {
  border-color: var(--turf);
  transform: translateY(-2px);
}

.page-products .pp-file__title {
  margin: 12px 0 0;
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
}

.page-products .pp-file__text {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted);
}

.page-products .pp-file__meta {
  max-height: 0;
  margin: 0;
  overflow: hidden;
  opacity: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--cyan);
  transition: max-height var(--dur) var(--ease), opacity var(--dur) var(--ease), margin-top var(--dur) var(--ease);
}

.page-products .pp-file:hover .pp-file__meta,
.page-products .pp-file:focus-within .pp-file__meta {
  max-height: 90px;
  margin-top: 10px;
  opacity: 1;
}

.page-products .pp-more {
  margin: var(--pp-gap) 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted);
}

.page-products .pp-more a {
  color: var(--cyan);
}

/* ---------- 上新时间线 ---------- */
.page-products .pp-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}

.page-products .pp-node {
  position: relative;
  padding: 0 0 22px 26px;
  border-left: 1px solid var(--pp-line);
}

.page-products .pp-node:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-products .pp-node::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 5px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--turf);
  box-shadow: 0 0 0 3px var(--ink-900);
}

.page-products .pp-node__when {
  display: block;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-products .pp-node__title {
  margin: 8px 0 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
}

.page-products .pp-node__text {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 求助与反馈 ---------- */
.page-products .pp-support {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-products .pp-support__card {
  background: var(--pp-card);
  border: 1px solid var(--pp-line);
  border-radius: var(--radius);
  padding: var(--pp-pad);
}

.page-products .pp-support__card--signal {
  border-color: var(--signal);
}

.page-products .pp-support__title {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
}

.page-products .pp-support__text {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted);
}

.page-products .pp-support__text a {
  color: var(--cyan);
}

.page-products .pp-support__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.page-products .pp-support__contact {
  margin: 14px 0 0;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--muted);
  word-break: break-all;
}

/* ---------- 尾部过渡 ---------- */
.page-products .pp-outro {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pp-gap);
  align-items: center;
  padding-block: clamp(32px, 6vw, 72px);
  border-top: 1px solid var(--pp-line);
}

.page-products .pp-outro__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(22px, 3.6vw, 36px);
  line-height: 1.15;
  color: var(--text);
}

.page-products .pp-outro__lead {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 52ch;
}

.page-products .pp-outro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

/* ---------- 悬停能力弱的设备 ---------- */
@media (hover: none) {
  .page-products .pp-file__meta {
    max-height: none;
    margin-top: 10px;
    opacity: 1;
  }

  .page-products .pp-file:hover {
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pp-file,
  .page-products .pp-zone,
  .page-products .pp-file__meta {
    transition: none;
  }

  .page-products .pp-file:hover,
  .page-products .pp-file:focus-within {
    transform: none;
  }
}

/* ---------- 平板 ---------- */
@media (min-width: 700px) {
  .page-products .pp-zones {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .pp-files {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .pp-spec__val {
    max-width: 20ch;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-products .pp-hero {
    grid-template-columns: minmax(0, 1.4fr) minmax(300px, 1fr);
    align-items: start;
  }

  .page-products .pp-install {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

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

  .page-products .pp-support {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .pp-outro {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  }

  .page-products .pp-timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 22px;
  }

  .page-products .pp-node {
    padding: 22px 0 0;
    border-left: 0;
    border-top: 1px solid var(--pp-line);
  }

  .page-products .pp-node:last-child {
    border-left-color: transparent;
  }

  .page-products .pp-node::before {
    left: 0;
    top: -5px;
  }
}

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

  .page-products .pp-panel__head {
    gap: 14px 22px;
  }
}