.page-products {
  --pp-gap: clamp(20px, 4vw, 46px);
  --pp-panel: rgba(18, 42, 63, .52);
  --pp-panel-solid: rgba(18, 42, 63, .88);
}

.page-products .scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--gold));
  z-index: 90;
  pointer-events: none;
}

.page-products .breadcrumb {
  margin: clamp(14px, 2.4vw, 24px) 0 0;
}

/* ---------- 首屏 ---------- */

.page-products .pp-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 4vw, 52px) 0 clamp(36px, 6vw, 88px);
}

.page-products .pp-hero::before {
  content: "";
  position: absolute;
  top: -28%;
  right: -18%;
  width: clamp(300px, 58vw, 700px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: repeating-radial-gradient(circle at 50% 50%, transparent 0 36px, rgba(0, 229, 199, .26) 36px 37px);
  -webkit-mask-image: radial-gradient(circle at 50% 50%, #000 22%, transparent 70%);
  mask-image: radial-gradient(circle at 50% 50%, #000 22%, transparent 70%);
  opacity: .55;
  pointer-events: none;
}

.page-products .pp-hero-inner {
  position: relative;
  display: grid;
  gap: clamp(26px, 4vw, 46px);
  align-items: start;
}

.page-products .pp-hero-copy h1 {
  margin: 12px 0 16px;
  font-size: clamp(30px, 7vw, 58px);
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--mist-strong);
  max-width: 16ch;
}

.page-products .pp-hero-copy .lede {
  max-width: 40ch;
  color: var(--mist-dim);
  font-size: clamp(14px, 1.6vw, 16px);
  line-height: 1.8;
}

.page-products .pp-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 30px;
  margin: clamp(22px, 3vw, 32px) 0;
  padding: clamp(16px, 2.4vw, 22px) 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-products .pp-metric {
  display: flex;
  align-items: baseline;
  gap: 10px;
  min-width: 0;
}

.page-products .pp-metric-num {
  font-family: var(--font-mono);
  font-size: clamp(32px, 6vw, 48px);
  font-weight: 700;
  line-height: .9;
  color: var(--gold);
  letter-spacing: -.04em;
}

.page-products .pp-metric-label {
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--mist-dim);
  max-width: 9em;
}

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

.page-products .pp-hero-figure {
  margin: 0;
}

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

/* ---------- 章节结构 ---------- */

.page-products .pp-section {
  position: relative;
  padding: clamp(40px, 7vw, 84px) 0;
}

.page-products .pp-section--alt {
  background: linear-gradient(180deg, rgba(18, 42, 63, .5), rgba(7, 19, 31, .32));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-products .pp-sec-head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px 16px;
  align-items: start;
  margin-bottom: clamp(22px, 3.4vw, 40px);
}

.page-products .chapter-no {
  font-family: var(--font-mono);
  font-size: clamp(30px, 5.2vw, 54px);
  font-weight: 700;
  line-height: .85;
  letter-spacing: -.05em;
  color: var(--gold);
  opacity: .9;
}

.page-products .pp-sec-head h2 {
  margin: 0 0 10px;
  font-size: clamp(21px, 3.2vw, 32px);
  line-height: 1.28;
  letter-spacing: -.01em;
  color: var(--mist-strong);
}

.page-products .pp-sec-lede {
  margin: 0;
  max-width: 48ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist-dim);
}

/* ---------- 01 入口总览 ---------- */

.page-products .pp-entry-grid {
  display: grid;
  gap: 16px;
}

.page-products .pp-entry {
  padding: clamp(20px, 3vw, 28px);
  border-radius: var(--r-xl);
  background: linear-gradient(158deg, var(--pp-panel-solid), rgba(11, 27, 43, .92));
  border: 1px solid var(--line);
}

.page-products .pp-entry h3 {
  margin: 14px 0 10px;
  font-size: 17px;
  line-height: 1.45;
  color: var(--mist-strong);
}

.page-products .pp-entry p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist-dim);
}

.page-products .pp-entry-note {
  margin: 0 !important;
  padding-left: 14px;
  border-left: 2px solid var(--cyan);
  font-size: 12.5px !important;
  color: rgba(124, 245, 228, .9) !important;
}

.page-products .pp-entry-figure {
  margin: clamp(24px, 4vw, 40px) 0 0;
}

/* ---------- 02 适配表 ---------- */

.page-products .pp-filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 18px;
}

.page-products .pp-filter {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-cyan);
  background: rgba(0, 229, 199, .07);
  color: var(--mist);
  font-size: 13px;
  font-family: var(--font-mono);
  text-decoration: none;
  transition: background .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease);
}

.page-products .pp-filter:hover,
.page-products .pp-filter:focus-visible {
  background: rgba(0, 229, 199, .18);
  border-color: var(--cyan);
  color: var(--mist-strong);
}

.page-products .pp-table-cap {
  caption-side: top;
  text-align: left;
  padding: 0 0 12px;
  font-size: 12.5px;
  color: var(--mist-dim);
}

.page-products .data-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 13.5px;
}

.page-products .data-table th,
.page-products .data-table td {
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
  color: var(--mist);
  line-height: 1.6;
}

.page-products .data-table thead th {
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--cyan-soft);
  background: rgba(7, 19, 31, .7);
  white-space: nowrap;
}

.page-products .pp-group-row th {
  scroll-margin-top: calc(var(--header-h) + 20px);
  background: rgba(242, 180, 65, .1);
  color: var(--gold);
  font-size: 12.5px;
  letter-spacing: .03em;
  border-bottom: 1px solid rgba(242, 180, 65, .3);
}

.page-products .pp-adapt-table tbody tr:not(.pp-group-row):nth-child(odd) {
  background: rgba(30, 58, 79, .28);
}

.page-products .pp-adapt-table tbody tr:hover {
  background: rgba(0, 229, 199, .09);
}

.page-products .pp-cell-mono {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--mist-strong);
  white-space: nowrap;
}

.page-products .pp-adapt-table td .status-dot {
  margin-right: 8px;
}

.page-products .pp-table-note {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 13px;
  line-height: 1.8;
  color: var(--mist-dim);
  padding-left: 14px;
  border-left: 2px solid var(--line-cyan);
}

/* ---------- 03 六步清单 ---------- */

.page-products .pp-steps-layout {
  display: grid;
  gap: var(--pp-gap);
}

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

.page-products .pp-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding: 15px 16px;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: var(--pp-panel);
  transition: border-color .25s var(--ease), background .25s var(--ease);
}

.page-products .pp-step:has(.pp-step-check:checked) {
  border-color: var(--line-cyan);
  background: rgba(0, 229, 199, .08);
}

.page-products .pp-step-no {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--cyan);
  color: var(--ink-950);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  flex: none;
}

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

.page-products .pp-step-label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  cursor: pointer;
  font-size: 15px;
  line-height: 1.55;
  color: var(--mist-strong);
  font-weight: 600;
}

.page-products .pp-step-check {
  flex: none;
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--cyan);
}

.page-products .pp-step-body p {
  margin: 7px 0 0 28px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mist-dim);
}

.page-products .pp-steps-side {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-products .pp-steps-side .media-frame {
  margin: 0;
}

.page-products .pp-callout {
  padding: 18px 20px;
  border-radius: var(--r-lg);
  border: 1px solid var(--line-cyan);
  background: linear-gradient(150deg, rgba(0, 229, 199, .1), rgba(7, 19, 31, .5));
}

.page-products .pp-callout-title {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 700;
  color: var(--cyan-soft);
}

.page-products .pp-callout p {
  margin: 0 0 14px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mist-dim);
}

/* ---------- 04 下载资源 ---------- */

.page-products .pp-dl-layout {
  display: grid;
  gap: var(--pp-gap);
}

.page-products .pp-dl-list {
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-products .pp-dl {
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--pp-panel);
  overflow: hidden;
  transition: border-color .25s var(--ease);
}

.page-products .pp-dl[open] {
  border-color: var(--line-cyan);
  background: rgba(0, 229, 199, .06);
}

.page-products .pp-dl summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 600;
  color: var(--mist-strong);
}

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

.page-products .pp-dl summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--gold);
}

.page-products .pp-dl[open] summary::after {
  content: "–";
}

.page-products .pp-dl-idx {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gold);
  border: 1px solid rgba(242, 180, 65, .4);
  border-radius: var(--r-pill);
  padding: 2px 8px;
  flex: none;
}

.page-products .pp-dl-body {
  padding: 0 18px 16px 18px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--mist-dim);
}

.page-products .pp-dl-side {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-products .pp-dl-side .media-frame {
  margin: 0;
}

.page-products .pp-status-panel {
  padding: 18px 20px;
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, rgba(242, 180, 65, .12), rgba(11, 27, 43, .7));
  border: 1px solid rgba(242, 180, 65, .32);
}

.page-products .pp-status-label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--gold);
}

.page-products .pp-status-value {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 700;
  color: var(--mist-strong);
  letter-spacing: -.02em;
}

.page-products .pp-status-note {
  margin: 0 0 14px;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--mist-dim);
}

/* ---------- 05 收藏与迁移 ---------- */

.page-products .pp-keep-grid {
  display: grid;
  gap: 16px;
}

.page-products .pp-keep {
  padding: clamp(20px, 3vw, 28px);
  border-radius: var(--r-xl);
  background: linear-gradient(155deg, var(--pp-panel-solid), rgba(11, 27, 43, .9));
  border: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.page-products .pp-keep h3 {
  margin: 0 0 10px;
  font-size: 17px;
  line-height: 1.45;
  color: var(--mist-strong);
}

.page-products .pp-keep p {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist-dim);
}

.page-products .pp-keep .btn {
  margin-top: auto;
}

.page-products .copy-status {
  margin: 14px 0 0;
  font-size: 13px;
  color: var(--cyan-soft);
}

/* ---------- 06 适用场景 ---------- */

.page-products .pp-scene-grid {
  display: grid;
  gap: 16px;
}

.page-products .pp-scene {
  padding: clamp(18px, 2.6vw, 26px);
  border-radius: var(--r-xl);
  border: 1px solid var(--line);
  background: var(--pp-panel);
  border-left: 3px solid var(--cyan);
}

.page-products .pp-scene h3 {
  margin: 12px 0 8px;
  font-size: 16px;
  line-height: 1.4;
  color: var(--mist-strong);
}

.page-products .pp-scene p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist-dim);
}

.page-products .pp-scene-tip {
  margin: 0 !important;
  font-size: 12.5px !important;
  color: rgba(242, 180, 65, .92) !important;
}

.page-products .pp-scene-figure {
  margin: clamp(24px, 4vw, 40px) 0 0;
}

/* ---------- 收尾 ---------- */

.page-products .pp-cta {
  padding: clamp(36px, 6vw, 72px) 0;
  background: linear-gradient(120deg, rgba(0, 229, 199, .1), rgba(7, 19, 31, .1) 55%, rgba(242, 180, 65, .12));
  border-top: 1px solid var(--line);
}

.page-products .pp-cta-inner {
  display: grid;
  gap: 22px;
}

.page-products .pp-cta-copy h2 {
  margin: 0 0 10px;
  font-size: clamp(21px, 3.2vw, 30px);
  line-height: 1.3;
  color: var(--mist-strong);
}

.page-products .pp-cta-copy p {
  margin: 0;
  max-width: 52ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist-dim);
}

.page-products .pp-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 桌面 ---------- */

@media (min-width: 820px) {
  .page-products .pp-hero-inner {
    grid-template-columns: 1.05fr .95fr;
    align-items: start;
  }

  .page-products .pp-hero-figure {
    margin-top: 46px;
  }

  .page-products .pp-entry-grid {
    grid-template-columns: repeat(3, 1fr);
    align-items: start;
  }

  .page-products .pp-entry:nth-child(2) {
    margin-top: 30px;
  }

  .page-products .pp-entry:nth-child(3) {
    margin-top: 12px;
  }

  .page-products .pp-steps-layout {
    grid-template-columns: 1.35fr .85fr;
    align-items: start;
  }

  .page-products .pp-dl-layout {
    grid-template-columns: 1.25fr .85fr;
    align-items: start;
  }

  .page-products .pp-keep-grid {
    grid-template-columns: repeat(3, 1fr);
    align-items: stretch;
  }

  .page-products .pp-keep:nth-child(2) {
    margin-top: 26px;
  }

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

  .page-products .pp-scene:nth-child(2) {
    margin-top: 26px;
  }

  .page-products .pp-cta-inner {
    grid-template-columns: 1.4fr auto;
    align-items: center;
  }
}

@media (min-width: 1100px) {
  .page-products .pp-sec-head {
    gap: 16px 28px;
  }

  .page-products .pp-hero-copy h1 {
    font-size: clamp(44px, 4.4vw, 62px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pp-filter,
  .page-products .pp-step,
  .page-products .pp-dl {
    transition: none;
  }
}
<<<END>>>