/* ===== 功能与版本 / page-products ===== */

.page-products {
  --pp-line: var(--line-soft);
  --pp-shadow-s: 0 1px 2px rgba(7, 11, 20, .05);
  --pp-shadow-m: 0 20px 44px -30px rgba(7, 11, 20, .5);
  display: block;
  background: var(--paper);
  color: var(--text-900);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

/* ---------- 面包屑（深色区上） ---------- */
.page-products .pp-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 28px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--on-dark-muted);
}

.page-products .pp-breadcrumb a {
  color: var(--on-dark-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur-1) var(--ease), border-color var(--dur-1) var(--ease);
}

.page-products .pp-breadcrumb a:hover,
.page-products .pp-breadcrumb a:focus-visible {
  color: var(--on-dark-strong);
  border-bottom-color: var(--on-dark-line-strong);
}

.page-products .pp-breadcrumb .breadcrumb__sep {
  color: var(--on-dark-line-strong);
}

/* ---------- 首屏 ---------- */
.page-products .pp-hero {
  position: relative;
  overflow: hidden;
  background-color: var(--ink-900);
  background-image:
    radial-gradient(120% 90% at 88% 8%, rgba(18, 86, 224, .28) 0%, rgba(18, 86, 224, 0) 58%),
    radial-gradient(80% 70% at 4% 96%, rgba(15, 176, 138, .12) 0%, rgba(15, 176, 138, 0) 60%);
}

.page-products .pp-hero .eyebrow {
  color: var(--brand-400);
  letter-spacing: .18em;
}

.page-products .pp-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: center;
}

.page-products .pp-hero__title {
  margin: 12px 0 0;
  font-size: clamp(30px, 7vw, 54px);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: .01em;
  color: var(--on-dark-strong);
}

.page-products .pp-hero__lede {
  margin: 20px 0 0;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.7;
  color: var(--on-dark-muted);
}

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

.page-products .pp-hero .btn--outline {
  color: var(--on-dark);
  border-color: var(--on-dark-line-strong);
  background: transparent;
}

.page-products .pp-hero .btn--outline:hover,
.page-products .pp-hero .btn--outline:focus-visible {
  border-color: var(--brand-400);
  color: var(--on-dark-strong);
}

.page-products .pp-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 32px;
  margin: 34px 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--on-dark-line);
}

.page-products .pp-hero__fact {
  min-width: 92px;
}

.page-products .pp-hero__fact dt {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--on-dark-muted);
}

.page-products .pp-hero__fact dd {
  margin: 6px 0 0;
  font-size: 20px;
  font-weight: 600;
  color: var(--on-dark-strong);
}

.page-products .pp-hero__fact dd .mono {
  font-size: 24px;
  color: var(--brand-400);
}

.page-products .pp-hero__visual {
  margin: 0;
  padding: 24px;
  border: 1px solid var(--on-dark-line);
  border-radius: var(--radius-l);
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.page-products .pp-net-graph {
  display: block;
  width: 100%;
  height: auto;
}

.page-products .pp-net-graph__lines {
  stroke: var(--on-dark-line-strong);
}

.page-products .pp-net-graph__nodes {
  fill: var(--slate-300);
}

.page-products .pp-net-graph__core {
  fill: var(--brand-600);
  stroke: rgba(79, 139, 255, .5);
  stroke-width: 6;
}

.page-products .pp-hero__visual-label {
  margin: 18px 0 0;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--on-dark-muted);
  text-align: center;
}

/* ---------- 镜像对照 ---------- */
.page-products .pp-mirror {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 36px;
}

.page-products .pp-mirror__col {
  padding: 24px 20px;
  border: 1px solid var(--pp-line);
  border-radius: var(--radius-l);
  background: var(--paper);
  box-shadow: var(--pp-shadow-s);
  transition: border-color var(--dur-2) var(--ease), box-shadow var(--dur-2) var(--ease);
}

.page-products .pp-mirror__col:hover,
.page-products .pp-mirror__col:focus-within {
  border-color: var(--brand-400);
  box-shadow: var(--pp-shadow-m);
  outline: none;
}

.page-products .pp-mirror__head {
  padding-bottom: 16px;
  border-bottom: 2px solid var(--line-soft);
  transition: border-color var(--dur-2) var(--ease);
}

.page-products .pp-mirror__col[data-active="true"] .pp-mirror__head,
.page-products .pp-mirror__col:hover .pp-mirror__head,
.page-products .pp-mirror__col:focus-within .pp-mirror__head {
  border-bottom-color: var(--brand-600);
}

.page-products .pp-mirror__title {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--text-900);
}

.page-products .pp-mirror__sub {
  margin: 6px 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--slate-500);
}

.page-products .pp-mirror__rows {
  margin: 0;
}

.page-products .pp-mirror__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px dashed var(--line-soft);
}

.page-products .pp-mirror__row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.page-products .pp-mirror__label {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--slate-500);
}

.page-products .pp-mirror__value {
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--text-900);
}

.page-products .pp-mirror__note {
  margin: 24px 0 0;
  padding: 18px 20px;
  border-left: 3px solid var(--brand-600);
  border-radius: 0 var(--radius-s) var(--radius-s) 0;
  background: var(--brand-100);
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-900);
}

/* ---------- 路径示意图 ---------- */
.page-products .pp-path__frame {
  margin: 28px 0 0;
  border: 1px solid var(--pp-line);
  border-radius: var(--radius-l);
  overflow: hidden;
  background: var(--paper);
  box-shadow: var(--pp-shadow-s);
}

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

.page-products .pp-path__frame .media-frame__label {
  padding: 14px 20px;
  border-top: 1px solid var(--pp-line);
  font-size: 13px;
  line-height: 1.6;
  color: var(--slate-500);
}

/* ---------- 步骤时间轴 ---------- */
.page-products .pp-timeline {
  margin-top: 40px;
}

.page-products .pp-timeline .timeline__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding-bottom: 28px;
  position: relative;
}

.page-products .pp-timeline .timeline__item::after {
  content: "";
  position: absolute;
  left: 23px;
  top: 74px;
  bottom: 0;
  width: 0;
  border-left: 1px dashed var(--slate-300);
}

.page-products .pp-timeline .timeline__item:last-child {
  padding-bottom: 0;
}

.page-products .pp-timeline .timeline__item:last-child::after {
  display: none;
}

.page-products .pp-timeline .step-numeral {
  font-family: var(--font-mono);
  font-size: 56px;
  font-weight: 300;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--brand-100);
  position: relative;
  width: 48px;
  flex: none;
}

.page-products .pp-timeline .step-numeral::after {
  content: attr(data-num);
  position: absolute;
  inset: 0;
  transform: translate(3px, 3px);
  color: var(--brand-600);
  opacity: .9;
}

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

.page-products .pp-step-trigger {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  padding: 6px 0 12px;
  border: none;
  border-bottom: 1px solid var(--pp-line);
  background: transparent;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
  color: inherit;
}

.page-products .pp-step-trigger:focus-visible {
  outline: 2px solid var(--brand-600);
  outline-offset: 4px;
  border-radius: var(--radius-s);
}

.page-products .pp-step-trigger__text {
  display: block;
}

.page-products .pp-step-trigger__title {
  display: block;
  font-size: 20px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-900);
}

.page-products .pp-step-trigger__hint {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--slate-500);
}

.page-products .accordion__icon {
  flex: none;
  width: 14px;
  height: 14px;
  margin-top: 6px;
  border-right: 1.5px solid var(--slate-500);
  border-bottom: 1.5px solid var(--slate-500);
  transform: rotate(45deg);
  transition: transform var(--dur-2) var(--ease);
}

.page-products .accordion__trigger[aria-expanded="true"] .accordion__icon {
  transform: rotate(-135deg);
}

.page-products .accordion__body {
  padding: 18px 0 4px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-900);
}

.page-products .accordion__body > p {
  margin: 0 0 12px;
}

.page-products .accordion__body > p:last-child {
  margin-bottom: 0;
}

.page-products .pp-step-trigger__status {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
  font-size: 13px;
  color: var(--slate-500);
}

/* ---------- 安全提示 ---------- */
.page-products .safe-note {
  margin-top: 32px;
}

/* ---------- 备份说明 ---------- */
.page-products .pp-backup {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: center;
  margin-top: 40px;
  padding-top: 36px;
  border-top: 1px solid var(--line-mid);
}

.page-products .pp-backup__media {
  margin: 0;
  border: 1px solid var(--pp-line);
  border-radius: var(--radius-l);
  overflow: hidden;
  background: var(--paper);
}

.page-products .pp-backup__media img {
  display: block;
  width: 100%;
  height: auto;
}

.page-products .pp-backup__title {
  margin: 0 0 12px;
  font-size: 22px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--text-900);
}

.page-products .pp-backup__copy p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-900);
}

.page-products .pp-backup__copy p:last-child {
  margin-bottom: 0;
  color: var(--slate-500);
}

/* ---------- 横向主题带 ---------- */
.page-products .band {
  background-color: var(--ink-800);
  background-image: linear-gradient(90deg, rgba(18, 86, 224, .18) 0%, rgba(18, 86, 224, 0) 62%);
}

.page-products .band .band__title {
  color: var(--on-dark-strong);
}

.page-products .band .band__meta {
  color: var(--on-dark-muted);
}

/* ---------- 电脑端步骤 ---------- */
.page-products .pp-steps {
  list-style: none;
  margin: 40px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-products .pp-steps__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  padding: 22px 0;
  border-bottom: 1px solid var(--pp-line);
}

.page-products .pp-steps__item:first-child {
  border-top: 1px solid var(--pp-line);
}

.page-products .pp-steps__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  flex: none;
  border-radius: 50%;
  background: var(--brand-100);
  color: var(--brand-600);
  font-size: 14px;
  font-weight: 500;
}

.page-products .pp-steps__title {
  margin: 4px 0 8px;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-900);
}

.page-products .pp-steps__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--slate-500);
}

/* ---------- 网络列表 ---------- */
.page-products .pp-nets {
  margin-top: 44px;
  padding: 28px 20px;
  border: 1px solid var(--pp-line);
  border-radius: var(--radius-l);
  background: var(--mist-100);
}

.page-products .pp-nets__heading {
  margin: 0;
  font-size: 20px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--text-900);
}

.page-products .pp-nets__lede {
  margin: 10px 0 20px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate-500);
}

.page-products .pp-net-list {
  border-top: 1px solid var(--line-mid);
}

.page-products .pp-net-list .accordion__item {
  border-bottom: 1px solid var(--line-mid);
}

.page-products .pp-net-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  padding: 15px 4px;
  border: none;
  background: transparent;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
  color: inherit;
  transition: background-color var(--dur-1) var(--ease);
}

.page-products .pp-net-trigger:hover {
  background: rgba(18, 86, 224, .05);
}

.page-products .pp-net-trigger:focus-visible {
  outline: 2px solid var(--brand-600);
  outline-offset: -2px;
}

.page-products .pp-net-name {
  font-size: 16px;
  font-weight: 500;
  letter-spacing: .02em;
  color: var(--text-900);
}

.page-products .pp-net-list .accordion__body {
  padding: 0 4px 18px;
  font-size: 14px;
  color: var(--slate-500);
}

.page-products .pp-inline-media {
  margin: 32px 0 0;
  border: 1px solid var(--pp-line);
  border-radius: var(--radius-l);
  overflow: hidden;
  background: var(--paper);
}

.page-products .pp-inline-media img {
  display: block;
  width: 100%;
  height: auto;
}

.page-products .pp-inline-media .media-frame__label {
  padding: 14px 20px;
  border-top: 1px solid var(--pp-line);
  font-size: 13px;
  line-height: 1.6;
  color: var(--slate-500);
}

/* ---------- 核对章节 ---------- */
.page-products .pp-check {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-top: 36px;
}

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

.page-products .pp-check__step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line-mid);
}

.page-products .pp-check__step:first-child {
  border-top: 1px solid var(--line-mid);
}

.page-products .pp-check__idx {
  padding-top: 3px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .06em;
  color: var(--brand-600);
}

.page-products .pp-check__text h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-900);
}

.page-products .pp-check__text p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--slate-500);
}

.page-products .pp-badges {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .pp-badges li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--slate-500);
}

.page-products .pp-check__media {
  margin: 0;
  border: 1px solid var(--pp-line);
  border-radius: var(--radius-l);
  overflow: hidden;
  background: var(--paper);
  align-self: start;
}

.page-products .pp-check__media img {
  display: block;
  width: 100%;
  height: auto;
}

.page-products .pp-check__media .media-frame__label {
  padding: 14px 18px;
  border-top: 1px solid var(--pp-line);
  font-size: 13px;
  line-height: 1.6;
  color: var(--slate-500);
}

.page-products .callout {
  margin-top: 28px;
}

/* ---------- 对照表 ---------- */
.page-products .pp-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 28px 0 20px;
}

.page-products .pp-filter__chip {
  padding: 8px 16px;
  border: 1px solid var(--line-mid);
  border-radius: 999px;
  background: var(--paper);
  font-family: inherit;
  font-size: 14px;
  line-height: 1.4;
  color: var(--slate-500);
  cursor: pointer;
  transition: color var(--dur-1) var(--ease), border-color var(--dur-1) var(--ease), background-color var(--dur-1) var(--ease);
}

.page-products .pp-filter__chip:hover {
  border-color: var(--brand-400);
  color: var(--brand-600);
}

.page-products .pp-filter__chip[aria-pressed="true"] {
  border-color: var(--brand-600);
  background: var(--brand-100);
  color: var(--brand-600);
  font-weight: 500;
}

.page-products .pp-filter__chip:focus-visible {
  outline: 2px solid var(--brand-600);
  outline-offset: 2px;
}

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

.page-products .pp-table th[scope="row"] {
  font-weight: 600;
  color: var(--text-900);
  text-align: left;
}

.page-products .pp-table td {
  color: var(--slate-500);
}

.page-products .pp-table__note {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate-500);
}

/* ---------- 迭代记录 ---------- */
.page-products .pp-log {
  list-style: none;
  margin: 36px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-products .pp-log__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 22px 20px;
  border: 1px solid var(--pp-line);
  border-bottom: none;
  background: var(--paper);
}

.page-products .pp-log__item:first-child {
  border-radius: var(--radius-m) var(--radius-m) 0 0;
}

.page-products .pp-log__item:last-child {
  border-bottom: 1px solid var(--pp-line);
  border-radius: 0 0 var(--radius-m) var(--radius-m);
}

.page-products .pp-log__time {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--brand-600);
}

.page-products .pp-log__title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-900);
}

.page-products .pp-log__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate-500);
}

.page-products .pp-log__more {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 28px;
  padding: 22px 20px;
  border: 1px solid var(--pp-line);
  border-radius: var(--radius-m);
  background: var(--paper);
}

.page-products .pp-log__more p {
  margin: 0;
  flex: 1 1 280px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate-500);
}

/* ---------- 结尾 ---------- */
.page-products .pp-cta {
  background-color: var(--ink-900);
  background-image: radial-gradient(100% 140% at 10% 0%, rgba(18, 86, 224, .26) 0%, rgba(18, 86, 224, 0) 60%);
}

.page-products .pp-cta .eyebrow {
  color: var(--brand-400);
  letter-spacing: .18em;
}

.page-products .pp-cta__inner {
  max-width: 760px;
}

.page-products .pp-cta__title {
  margin: 12px 0 0;
  font-size: clamp(26px, 5vw, 38px);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: .01em;
  color: var(--on-dark-strong);
}

.page-products .pp-cta__text {
  margin: 18px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--on-dark-muted);
}

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

.page-products .pp-cta .btn--outline {
  color: var(--on-dark);
  border-color: var(--on-dark-line-strong);
  background: transparent;
}

.page-products .pp-cta .btn--outline:hover,
.page-products .pp-cta .btn--outline:focus-visible {
  border-color: var(--brand-400);
  color: var(--on-dark-strong);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-products .pp-mirror__row {
    grid-template-columns: 96px 1fr;
    align-items: baseline;
    gap: 16px;
  }

  .page-products .pp-filter {
    margin-top: 32px;
  }
}

@media (min-width: 820px) {
  .page-products .pp-mirror {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .page-products .pp-backup {
    grid-template-columns: 5fr 6fr;
    gap: 40px;
  }

  .page-products .pp-check {
    grid-template-columns: 7fr 5fr;
    gap: 44px;
    align-items: start;
  }

  .page-products .pp-timeline .step-numeral {
    font-size: 92px;
    width: 82px;
  }

  .page-products .pp-timeline .timeline__item::after {
    left: 40px;
    top: 108px;
  }
}

@media (min-width: 960px) {
  .page-products .pp-hero__grid {
    grid-template-columns: 5fr 7fr;
    gap: 56px;
  }

  .page-products .pp-hero__visual {
    padding: 32px;
  }

  .page-products .pp-nets {
    padding: 36px 32px;
  }

  .page-products .pp-log__item {
    grid-template-columns: 120px 1fr;
    gap: 24px;
    align-items: baseline;
    padding: 22px 24px;
  }
}

@media (min-width: 1100px) {
  .page-products .pp-timeline .step-numeral {
    font-size: 116px;
    width: 104px;
  }

  .page-products .pp-timeline .timeline__item::after {
    left: 51px;
    top: 134px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pp-mirror__col,
  .page-products .pp-filter__chip,
  .page-products .accordion__icon,
  .page-products .pp-net-trigger,
  .page-products .pp-mirror__head {
    transition: none;
  }
}
<<<END>>>