.page-products {
  --pp-rail: 15rem;
  --pp-card-bg: rgba(17, 40, 61, 0.6);
  --pp-card-bg-2: rgba(17, 40, 61, 0.42);
  --pp-sep: rgba(140, 151, 165, 0.45);
}

.page-products .pp-sep {
  margin: 0 0.5rem;
  color: var(--pp-sep);
}

/* ---------- 首屏 ---------- */
.page-products .pp-hero {
  position: relative;
  padding: calc(var(--gap-5) + 1.5rem) 0 var(--gap-5);
  background:
    radial-gradient(120% 95% at 8% -10%, rgba(76, 140, 129, 0.2), transparent 62%),
    radial-gradient(90% 75% at 92% 0%, rgba(201, 162, 74, 0.14), transparent 62%);
  border-bottom: 1px solid var(--line-gold);
  overflow: hidden;
}

.page-products .pp-hero::after {
  content: "";
  position: absolute;
  right: -8%;
  top: 12%;
  width: 42%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-gold-strong));
  transform: rotate(-16deg);
  pointer-events: none;
}

.page-products .pp-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap-4);
  margin-top: var(--gap-4);
}

.page-products .pp-motto {
  margin: 0 0 var(--gap-3);
  padding-left: 0.9rem;
  border-left: 1px solid var(--gold);
  font-family: var(--font-mono);
  font-size: var(--fs-index);
  letter-spacing: 0.16em;
  color: var(--gold-bright);
}

.page-products .pp-hero__title {
  margin: 0 0 var(--gap-3);
  font-family: var(--font-display);
  font-size: var(--fs-h1);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--paper-white);
}

.page-products .pp-hero__lead {
  max-width: 34em;
  margin: 0 0 var(--gap-4);
  font-size: var(--fs-body);
  line-height: 1.85;
  color: var(--stone);
}

.page-products .pp-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-2);
}

.page-products .pp-hero__aside .media-frame {
  width: 100%;
}

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

.page-products .media-frame__caption {
  font-family: var(--font-mono);
  font-size: var(--fs-small);
  color: var(--stone);
}

/* ---------- 通道总览 ---------- */
.page-products .pp-overview {
  padding: var(--gap-5) 0;
  background:
    repeating-linear-gradient(118deg, rgba(201, 162, 74, 0.07) 0 1px, transparent 1px 56px),
    linear-gradient(180deg, rgba(17, 40, 61, 0.72), rgba(10, 23, 37, 0));
  border-bottom: 1px solid var(--line-gold);
}

.page-products .pp-ov__head {
  max-width: 46rem;
  margin-bottom: var(--gap-4);
}

.page-products .pp-ov__title {
  margin: var(--gap-2) 0 var(--gap-2);
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  font-weight: 700;
  color: var(--paper-white);
}

.page-products .pp-ov__lead {
  margin: 0;
  font-size: var(--fs-body);
  line-height: 1.85;
  color: var(--stone);
}

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

.page-products .pp-ov__item {
  position: relative;
  padding: var(--gap-3);
  background: var(--ink-sea);
  transition: background 200ms ease;
}

.page-products .pp-ov__no {
  display: block;
  margin-bottom: 0.6rem;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--gold-bright);
}

.page-products .pp-ov__name {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  font-weight: 700;
  color: var(--paper-warm);
}

.page-products .pp-ov__item p {
  margin: 0 0 0.9rem;
  font-size: var(--fs-small);
  line-height: 1.8;
  color: var(--stone);
}

.page-products .pp-ov__link {
  font-family: var(--font-mono);
  font-size: var(--fs-index);
  letter-spacing: 0.14em;
  color: var(--jade-light);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 180ms ease, border-color 180ms ease;
}

.page-products .pp-ov__link:hover,
.page-products .pp-ov__link:focus-visible {
  color: var(--gold-bright);
  border-bottom-color: var(--gold);
}

/* ---------- 两栏骨架 ---------- */
.page-products .pp-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap-4);
  padding: var(--gap-5) 0 var(--gap-6);
}

/* ---------- 左侧目录 ---------- */
.page-products .pp-toc {
  display: none;
}

.page-products .pp-toc__head {
  margin: 0 0 var(--gap-2);
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--line-gold);
  font-family: var(--font-mono);
  font-size: var(--fs-index);
  letter-spacing: 0.2em;
  color: var(--gold);
}

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

.page-products .pp-toc__link {
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
  padding: 0.55rem 0.55rem 0.55rem 0.7rem;
  border-left: 1px solid transparent;
  font-size: var(--fs-small);
  line-height: 1.5;
  color: var(--stone);
  text-decoration: none;
  transition: color 180ms ease, border-color 180ms ease, background 180ms ease;
}

.page-products .pp-toc__link:hover,
.page-products .pp-toc__link:focus-visible {
  color: var(--paper-warm);
  border-left-color: var(--gold);
  background: rgba(201, 162, 74, 0.06);
}

.page-products .pp-toc__link[aria-current="true"] {
  color: var(--gold-bright);
  border-left-color: var(--cinnabar);
  background: rgba(180, 57, 44, 0.08);
}

.page-products .pp-toc__link--sub {
  font-size: 0.78rem;
  color: rgba(140, 151, 165, 0.8);
}

.page-products .pp-toc__no {
  flex: none;
  min-width: 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-products .pp-toc__foot {
  margin-top: var(--gap-3);
  padding-top: var(--gap-3);
  border-top: 1px solid var(--line-stone);
}

/* ---------- 通道说明卡 ---------- */
.page-products .pp-channels {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap-3);
}

.page-products .pp-ch {
  position: relative;
  padding: var(--gap-3);
  border: 1px solid var(--line-gold);
  border-radius: 2px;
  background: var(--pp-card-bg);
  box-shadow: var(--shadow-lift);
  scroll-margin-top: 7.5rem;
  transition: transform 240ms ease, border-color 240ms ease, box-shadow 240ms ease;
}

.page-products .pp-ch:hover {
  transform: translateY(-4px);
  border-color: var(--line-gold-strong);
  box-shadow: var(--shadow-paper);
}

.page-products .pp-ch--compact {
  padding: calc(var(--gap-3) - 0.15rem);
}

.page-products .pp-ch--plain {
  background: var(--pp-card-bg-2);
  box-shadow: none;
}

.page-products .pp-ch__head {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  gap: 0.35rem 0.85rem;
  margin-bottom: var(--gap-2);
}

.page-products .pp-ch__no {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--jade-light);
}

.page-products .pp-ch__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  font-weight: 700;
  line-height: 1.2;
  color: var(--paper-white);
}

.page-products .pp-ch__when {
  grid-column: 2;
  justify-self: start;
  padding: 0.2rem 0.6rem;
  border: 1px solid rgba(76, 140, 129, 0.4);
  border-radius: 999px;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--jade-light);
  transition: border-color 200ms ease, color 200ms ease;
}

.page-products .pp-ch:hover .pp-ch__when {
  border-color: var(--line-gold-strong);
  color: var(--gold-bright);
}

.page-products .pp-ch__lead {
  margin: 0 0 var(--gap-3);
  max-width: 34em;
  font-size: var(--fs-body);
  line-height: 1.85;
  color: var(--stone);
}

.page-products .pp-ch__body {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap-3);
}

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

.page-products .pp-ch__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.25rem;
  padding: 0.85rem 0;
  border-top: 1px solid var(--line-stone);
}

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

.page-products .pp-ch__label {
  font-family: var(--font-mono);
  font-size: var(--fs-index);
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-products .pp-ch__text {
  font-size: var(--fs-small);
  line-height: 1.85;
  color: var(--stone);
}

.page-products .pp-ch__text a,
.page-products .pp-ch__more a {
  color: var(--jade-light);
  text-decoration: none;
  border-bottom: 1px solid rgba(147, 192, 181, 0.4);
}

.page-products .pp-ch__text a:hover,
.page-products .pp-ch__more a:hover {
  color: var(--gold-bright);
  border-bottom-color: var(--gold);
}

.page-products .pp-ch__figure {
  width: 100%;
}

.page-products .pp-ch__figure .media-frame {
  width: 100%;
}

.page-products .pp-ch__more {
  margin: var(--gap-2) 0 0;
  font-size: var(--fs-small);
  line-height: 1.8;
  color: var(--stone);
}

/* ---------- 三条推荐顺序 ---------- */
.page-products .pp-order {
  scroll-margin-top: 7.5rem;
}

.page-products .paper-panel.pp-order__panel {
  padding: var(--gap-4) var(--gap-3);
}

.page-products .pp-order__title {
  margin: var(--gap-2) 0 var(--gap-2);
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  font-weight: 700;
  color: var(--ink-sea);
}

.page-products .pp-order__lead {
  margin: 0 0 var(--gap-4);
  max-width: 36em;
  font-size: var(--fs-body);
  line-height: 1.85;
  color: rgba(10, 23, 37, 0.72);
}

.page-products .pp-flow {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap-3);
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: ppflow;
}

.page-products .pp-flow__item {
  position: relative;
  padding: var(--gap-3) var(--gap-2) var(--gap-2);
  background: var(--paper-white);
  border: 1px solid var(--line-ink);
  border-top: 2px solid var(--gold);
  border-radius: 2px;
}

.page-products .pp-flow__no {
  display: inline-block;
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--cinnabar);
}

.page-products .pp-flow__title {
  margin: 0 0 0.9rem;
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  font-weight: 700;
  color: var(--ink-sea);
}

.page-products .pp-flow__steps {
  margin: 0;
  padding-left: 1.15rem;
  list-style: decimal;
}

.page-products .pp-flow__steps li {
  margin-bottom: 0.6rem;
  font-size: var(--fs-small);
  line-height: 1.8;
  color: rgba(10, 23, 37, 0.74);
}

.page-products .pp-flow__steps li::marker {
  font-family: var(--font-mono);
  color: var(--jade);
}

/* ---------- 版本刻度 ---------- */
.page-products .pp-timeline {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap-3);
  margin: var(--gap-3) 0 0;
  padding: 0;
  list-style: none;
}

.page-products .pp-timeline::before {
  content: "";
  position: absolute;
  left: 0.28rem;
  top: 0.8rem;
  bottom: 0.8rem;
  width: 1px;
  background: linear-gradient(180deg, var(--gold), rgba(76, 140, 129, 0.5));
}

.page-products .pp-timeline__item {
  position: relative;
  padding-left: 1.9rem;
}

.page-products .pp-timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--gold-bright);
  box-shadow: 0 0 0 3px rgba(201, 162, 74, 0.16);
}

.page-products .pp-timeline__meta {
  margin: 0 0 0.3rem;
  font-family: var(--font-mono);
  font-size: var(--fs-index);
  letter-spacing: 0.14em;
  color: var(--jade-light);
}

.page-products .pp-timeline__title {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--paper-warm);
}

.page-products .pp-timeline__text {
  margin: 0;
  font-size: var(--fs-small);
  line-height: 1.8;
  color: var(--stone);
}

/* ---------- 环境与高峰 ---------- */
.page-products .pp-bounds {
  scroll-margin-top: 7.5rem;
  padding: var(--gap-4) var(--gap-3);
  border: 1px solid var(--line-gold);
  border-radius: 2px;
  background:
    linear-gradient(140deg, rgba(76, 140, 129, 0.16), transparent 52%),
    linear-gradient(320deg, rgba(201, 162, 74, 0.1), transparent 48%),
    var(--ink-deep);
}

.page-products .pp-bounds__title {
  margin: var(--gap-2) 0 var(--gap-2);
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  font-weight: 700;
  color: var(--paper-white);
}

.page-products .pp-bounds__lead {
  margin: 0 0 var(--gap-3);
  max-width: 36em;
  font-size: var(--fs-body);
  line-height: 1.85;
  color: var(--stone);
}

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

.page-products .pp-bounds__item {
  padding: var(--gap-2);
  background: rgba(10, 23, 37, 0.55);
}

.page-products .pp-bounds__item h3 {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--gold-bright);
}

.page-products .pp-bounds__item p {
  margin: 0;
  font-size: var(--fs-small);
  line-height: 1.8;
  color: var(--stone);
}

.page-products .pp-bounds__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--gap-2);
  margin-top: var(--gap-3);
  padding-top: var(--gap-3);
  border-top: 1px solid var(--line-gold);
}

.page-products .pp-bounds__foot p {
  margin: 0;
  max-width: 34em;
  font-size: var(--fs-small);
  line-height: 1.8;
  color: var(--stone);
}

/* ---------- 中屏 ---------- */
@media (min-width: 620px) {
  .page-products .pp-ov__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .pp-ch__item {
    grid-template-columns: 7.5rem minmax(0, 1fr);
    gap: 0.2rem 1rem;
    align-items: baseline;
  }

  .page-products .pp-ch__label {
    padding-top: 0.15rem;
  }

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

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

/* ---------- 桌面 ---------- */
@media (min-width: 960px) {
  .page-products .pp-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: end;
    gap: var(--gap-5);
  }

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

  .page-products .pp-ch__body {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.85fr);
    align-items: start;
    gap: var(--gap-3);
  }

  .page-products .pp-ch:nth-child(even) .pp-ch__body {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.35fr);
  }

  .page-products .pp-ch:nth-child(even) .pp-ch__figure {
    order: -1;
  }

  .page-products .pp-ch__figure--square .media-frame {
    max-width: 22rem;
    margin-left: auto;
  }

  .page-products .pp-ch:nth-child(even) .pp-ch__figure--square .media-frame {
    margin-left: 0;
  }
}

@media (min-width: 1000px) {
  .page-products .pp-grid {
    grid-template-columns: var(--pp-rail) minmax(0, 1fr);
    gap: var(--gap-5);
  }

  .page-products .pp-toc {
    display: block;
    position: sticky;
    top: 7.5rem;
    align-self: start;
  }
}

@media (min-width: 1080px) {
  .page-products .pp-timeline {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--gap-3);
    padding-top: 2.4rem;
  }

  .page-products .pp-timeline::before {
    left: 0.05rem;
    right: 0.05rem;
    top: 0.42rem;
    bottom: auto;
    width: auto;
    height: 1px;
    background: linear-gradient(90deg, var(--gold), rgba(76, 140, 129, 0.75));
  }

  .page-products .pp-timeline__item {
    padding-left: 0;
  }

  .page-products .pp-timeline__item::before {
    left: 0;
    top: -1.98rem;
  }
}

@media (min-width: 1200px) {
  .page-products .paper-panel.pp-order__panel {
    padding: var(--gap-4) var(--gap-4);
  }

  .page-products .pp-ch--lead {
    padding: var(--gap-4);
  }

  .page-products .pp-ch--compact {
    padding: calc(var(--gap-3) + 0.25rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pp-ch,
  .page-products .pp-toc__link,
  .page-products .pp-ov__link,
  .page-products .pp-ch__when {
    transition: none;
  }

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