.page-products {
  --pp-line: rgba(157, 176, 198, 0.2);
  --pp-panel: rgba(10, 37, 64, 0.7);
  --pp-panel-strong: rgba(18, 58, 99, 0.75);
  --pp-paper-ink: #16202e;
  --pp-paper-sub: #4a5a70;
  background: var(--deep-night);
  color: var(--mist-grey);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-products .breadcrumb {
  max-width: var(--shell);
  margin-inline: auto;
  padding: clamp(1.25rem, 4vw, 2.25rem) var(--gutter) 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--slate-blue);
}

.page-products .breadcrumb a {
  color: var(--slate-blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.25s ease, border-color 0.25s ease;
}

.page-products .breadcrumb a:hover {
  color: var(--neon-gold);
  border-bottom-color: var(--neon-gold);
}

/* ---------- 封面首屏 ---------- */

.pp-hero {
  position: relative;
  padding: clamp(1.5rem, 4vw, 2.5rem) 0 clamp(2.5rem, 7vw, 5rem);
  isolation: isolate;
}

.pp-hero::before {
  content: "";
  position: absolute;
  top: -28vw;
  right: -20vw;
  width: 72vw;
  height: 72vw;
  max-width: 760px;
  max-height: 760px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245, 195, 75, 0.16), rgba(255, 107, 74, 0.06) 46%, transparent 72%);
  pointer-events: none;
  z-index: -1;
}

.pp-hero__inner {
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.75rem, 5vw, 3rem);
  align-items: start;
}

.pp-hero h1 {
  font-family: var(--font-headline);
  font-weight: 900;
  font-size: clamp(1.75rem, 5vw, 3.1rem);
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--paper-white);
  margin: 0.85rem 0 1.15rem;
  max-width: 22ch;
}

.pp-hero__lede {
  font-size: clamp(1rem, 1.4vw, 1.0625rem);
  line-height: 1.9;
  color: var(--mist-grey);
  max-width: 42ch;
  margin: 0;
}

.pp-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.pp-hero__chips .tag {
  font-size: 0.8125rem;
}

/* 章节索引 */

.pp-index {
  display: grid;
  gap: 0.15rem;
  border-top: 1px solid var(--pp-line);
  padding-top: 0.85rem;
}

.pp-index a {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.6rem 0.15rem;
  color: var(--mist-grey);
  text-decoration: none;
  font-size: 0.9375rem;
  line-height: 1.5;
  border-bottom: 1px solid transparent;
  transition: color 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
}

.pp-index a:hover,
.pp-index a:focus-visible {
  color: var(--neon-gold);
  border-bottom-color: rgba(245, 195, 75, 0.5);
  transform: translateX(4px);
}

.pp-index__idx {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--neon-gold);
  flex: none;
}

/* ---------- 类目 ---------- */

.pp-cat-figure {
  margin: clamp(1.5rem, 4vw, 2.5rem) 0;
}

.pp-cats {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(0.85rem, 2vw, 1.25rem);
}

.pp-cat {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  padding: clamp(1.15rem, 2.4vw, 1.65rem);
  border-radius: var(--r-lg);
  border: 1px solid var(--pp-line);
  background: linear-gradient(158deg, rgba(30, 92, 143, 0.34), rgba(10, 37, 64, 0.92));
  transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}

.pp-cat:hover {
  transform: translateY(-4px);
  border-color: rgba(245, 195, 75, 0.45);
  box-shadow: 0 20px 44px -26px rgba(4, 16, 31, 0.95);
}

.pp-cat--lead {
  background: linear-gradient(158deg, rgba(255, 107, 74, 0.2), rgba(10, 37, 64, 0.95));
}

.pp-cat__top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
}

.pp-cat__idx {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--neon-gold);
}

.pp-cat__freq {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.04em;
  color: var(--slate-blue);
  text-align: right;
}

.pp-cat__name {
  font-family: var(--font-headline);
  font-weight: 900;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
  color: var(--paper-white);
  margin: 0;
}

.pp-cat__what {
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--mist-grey);
  margin: 0;
}

.pp-cat__when {
  margin: auto 0 0;
  padding-top: 0.85rem;
  border-top: 1px dashed var(--pp-line);
  font-size: 0.8125rem;
  line-height: 1.75;
  color: var(--slate-blue);
}

/* ---------- 纸感白章节 ---------- */

.page-products .pp-paper {
  background: var(--paper-white);
  color: var(--pp-paper-ink);
  padding-block: clamp(2.5rem, 7vw, 4.75rem);
  box-shadow: inset 0 1px 0 rgba(245, 195, 75, 0.5), inset 0 -1px 0 rgba(245, 195, 75, 0.5);
}

.page-products .pp-paper .section__title,
.page-products .pp-paper h2 {
  color: #0b0d12;
}

.page-products .pp-paper .eyebrow {
  color: var(--coral-deep);
}

.pp-mobile {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.75rem, 5vw, 3rem);
  align-items: start;
}

.pp-mobile__lede {
  font-size: 1rem;
  line-height: 1.9;
  color: var(--pp-paper-sub);
  margin: 0.85rem 0 1.5rem;
  max-width: 40ch;
}

.pp-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
  counter-reset: pp-step;
}

.pp-steps li {
  display: grid;
  gap: 0.2rem;
  padding: 0.9rem 1rem;
  border-radius: var(--r-md);
  background: #ffffff;
  border: 1px solid rgba(10, 37, 64, 0.1);
}

.pp-steps__idx {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--coral-deep);
}

.pp-steps strong {
  font-family: var(--font-headline);
  font-size: 1rem;
  color: #0b0d12;
}

.pp-steps span:last-child {
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--pp-paper-sub);
}

.pp-mobile__note {
  margin: 1.25rem 0 0;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--pp-paper-sub);
}

.pp-mobile__note a {
  color: var(--coral-deep);
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 62, 34, 0.4);
}

.pp-mobile__note a:hover {
  border-bottom-color: var(--coral-deep);
}

.pp-mobile__figure {
  max-width: 330px;
  margin-inline: auto;
}

/* ---------- 分区矩阵 ---------- */

.pp-zone-figure {
  margin: clamp(1.5rem, 4vw, 2.5rem) 0;
}

.pp-matrix {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.pp-zone {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 1rem;
  border-radius: var(--r-md);
  border: 1px solid var(--pp-line);
  background: var(--pp-panel);
  transition: border-color 0.3s ease, background 0.3s ease, transform 0.3s ease;
}

.pp-zone:hover {
  border-color: rgba(255, 107, 74, 0.5);
  background: var(--pp-panel-strong);
  transform: translateY(-3px);
}

.pp-zone__idx {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--tide-blue);
}

.pp-zone:hover .pp-zone__idx {
  color: var(--coral);
}

.pp-zone__name {
  font-family: var(--font-headline);
  font-weight: 900;
  font-size: 1.0625rem;
  letter-spacing: -0.01em;
  color: var(--paper-white);
  margin: 0;
}

.pp-zone__meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.04em;
  color: var(--neon-gold);
}

.pp-zone__fit {
  margin: 0.25rem 0 0;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--slate-blue);
}

/* ---------- 终端对照表 ---------- */

.pp-table-wrap {
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
  border: 1px solid var(--pp-line);
  border-radius: var(--r-lg);
  background: rgba(10, 37, 64, 0.5);
  padding: clamp(0.75rem, 2vw, 1.25rem);
}

.pp-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.pp-table__caption {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--slate-blue);
  padding-bottom: 0.75rem;
}

.pp-table th,
.pp-table td {
  padding: 0.85rem 0.75rem;
  text-align: left;
  vertical-align: top;
  line-height: 1.75;
  border-bottom: 1px solid var(--pp-line);
}

.pp-table thead th {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--neon-gold);
  white-space: nowrap;
}

.pp-table tbody tr {
  transition: background 0.25s ease;
}

.pp-table tbody tr:hover {
  background: rgba(30, 92, 143, 0.28);
}

.pp-table tbody td:first-child {
  color: var(--paper-white);
  font-weight: 600;
}

.pp-table tbody td:not(:first-child) {
  color: var(--mist-grey);
}

/* ---------- 收藏与同步 ---------- */

.pp-save {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 4vw, 2.75rem);
  align-items: center;
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
}

.pp-save__figure {
  margin: 0;
}

.pp-save__list {
  list-style: none;
  margin: 1.25rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.pp-save__list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.75rem;
  align-items: start;
  padding-bottom: 0.85rem;
  border-bottom: 1px dashed var(--pp-line);
}

.pp-save__list li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.pp-save__num {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--coral);
  padding-top: 0.25rem;
}

.pp-save__list strong {
  display: block;
  font-family: var(--font-headline);
  font-size: 1rem;
  color: var(--paper-white);
  margin-bottom: 0.15rem;
}

.pp-save__list span:last-child {
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--slate-blue);
}

/* ---------- 使用路径 ---------- */

.pp-path {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 4vw, 2.75rem);
  align-items: start;
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
}

.pp-path__figure {
  margin: 0;
}

.pp-stage {
  border: 1px solid var(--pp-line);
  border-radius: var(--r-md);
  background: rgba(10, 37, 64, 0.6);
  overflow: hidden;
}

.pp-stage + .pp-stage {
  margin-top: 0.75rem;
}

.pp-stage summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.15rem;
  font-family: var(--font-headline);
  font-weight: 900;
  font-size: 1rem;
  color: var(--paper-white);
  transition: background 0.25s ease;
}

.pp-stage summary::-webkit-details-marker {
  display: none;
}

.pp-stage summary:hover {
  background: rgba(30, 92, 143, 0.3);
}

.pp-stage summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--coral);
  line-height: 1;
}

.pp-stage[open] summary::after {
  content: "−";
}

.pp-stage__idx {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--neon-gold);
}

.pp-stage__body {
  padding: 0 1.15rem 1.15rem;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--mist-grey);
}

.pp-stage__body p {
  margin: 0 0 0.65rem;
}

.pp-stage__body p:last-child {
  margin-bottom: 0;
}

.pp-stage__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.85rem;
}

.pp-stage__tags .tag {
  font-size: 0.75rem;
}

.pp-stage__body a {
  color: var(--neon-gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(245, 195, 75, 0.4);
}

.pp-stage__body a:hover {
  border-bottom-color: var(--neon-gold);
}

/* ---------- 更新节奏 ---------- */

.pp-cadence {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.25rem, 3vw, 2rem);
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
}

.pp-week {
  display: grid;
  gap: 0.75rem;
}

.pp-week__row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.85rem;
  align-items: center;
  padding: 0.85rem 1rem;
  border-radius: var(--r-md);
  border: 1px solid var(--pp-line);
  background: rgba(18, 58, 99, 0.5);
}

.pp-week__day {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--neon-gold);
  padding: 0.2rem 0.6rem;
  border-radius: var(--r-pill);
  border: 1px solid rgba(245, 195, 75, 0.4);
  white-space: nowrap;
}

.pp-week__row--alt .pp-week__day {
  color: var(--coral);
  border-color: rgba(255, 107, 74, 0.45);
}

.pp-week__text {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--mist-grey);
}

.pp-subscribe {
  padding: clamp(1.15rem, 3vw, 1.65rem);
  border-radius: var(--r-lg);
  background: linear-gradient(150deg, rgba(255, 107, 74, 0.18), rgba(10, 37, 64, 0.9));
  border: 1px solid rgba(255, 107, 74, 0.32);
}

.pp-subscribe h3 {
  font-family: var(--font-headline);
  font-weight: 900;
  font-size: 1.125rem;
  color: var(--paper-white);
  margin: 0 0 0.6rem;
}

.pp-subscribe p {
  margin: 0 0 1rem;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--mist-grey);
}

.pp-subscribe__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

/* ---------- 收尾 ---------- */

.pp-closing {
  background: linear-gradient(180deg, rgba(4, 16, 31, 0) 0%, rgba(18, 58, 99, 0.55) 40%, rgba(4, 16, 31, 0.9) 100%);
  padding-block: clamp(2.5rem, 7vw, 4.5rem);
  margin-top: clamp(1rem, 3vw, 2rem);
}

.pp-closing__inner {
  text-align: center;
}

.pp-closing h2 {
  font-family: var(--font-headline);
  font-weight: 900;
  font-size: clamp(1.35rem, 3vw, 1.9rem);
  letter-spacing: -0.02em;
  color: var(--paper-white);
  margin: 0 0 0.85rem;
}

.pp-closing p {
  max-width: 46ch;
  margin: 0 auto 1.5rem;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--slate-blue);
}

.pp-closing__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.65rem;
}

/* ---------- 断点 ---------- */

@media (min-width: 640px) {
  .pp-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

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

@media (min-width: 860px) {
  .pp-matrix {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 0.85rem;
  }

  .pp-zone--lg {
    grid-column: span 3;
  }

  .pp-zone--md {
    grid-column: span 2;
  }

  .pp-zone--sm {
    grid-column: span 1;
  }

  .pp-cadence {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: start;
  }
}

@media (min-width: 900px) {
  .pp-hero__inner {
    grid-template-columns: minmax(0, 1.35fr) minmax(240px, 0.65fr);
    gap: clamp(2rem, 5vw, 4rem);
  }

  .pp-mobile {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.7fr);
  }

  .pp-mobile__figure {
    margin-inline: 0;
    max-width: none;
  }

  .pp-save {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  }

  .pp-path {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  }
}

@media (min-width: 1040px) {
  .pp-cats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    grid-auto-rows: 1fr;
  }

  .pp-cat--lead {
    grid-row: span 2;
  }
}

@media (max-width: 640px) {
  .pp-table thead {
    display: none;
  }

  .pp-table,
  .pp-table tbody,
  .pp-table tr,
  .pp-table td {
    display: block;
    width: 100%;
  }

  .pp-table tr {
    border: 1px solid var(--pp-line);
    border-radius: var(--r-md);
    padding: 0.5rem 0.85rem;
    margin-bottom: 0.85rem;
  }

  .pp-table tr:hover {
    background: transparent;
  }

  .pp-table td {
    border-bottom: 1px dashed var(--pp-line);
    padding: 0.6rem 0;
  }

  .pp-table td:last-child {
    border-bottom: none;
  }

  .pp-table td::before {
    content: attr(data-label);
    display: block;
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    letter-spacing: 0.06em;
    color: var(--neon-gold);
    margin-bottom: 0.2rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }

  .pp-cat:hover,
  .pp-zone:hover {
    transform: none;
  }

  .pp-index a:hover {
    transform: none;
  }
}
<<<END>>>