.page-products {
  --pp-flow-bg: rgba(6, 4, 20, 0.55);
  padding-bottom: clamp(40px, 7vw, 96px);
}

.page-products *,
.page-products *::before,
.page-products *::after {
  min-width: 0;
}

/* ---------- HERO ---------- */

.page-products .pp-hero {
  padding-block: clamp(24px, 4vw, 48px) clamp(40px, 7vw, 88px);
}

.page-products .pp-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-products .pp-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(34px, 6.4vw, 58px);
  line-height: 1.06;
  letter-spacing: -0.01em;
  font-weight: 700;
  color: var(--ink);
  margin: 12px 0 20px;
  max-width: 18ch;
}

.page-products .pp-lede {
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--muted);
  max-width: 48ch;
  margin: 0 0 28px;
}

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

.page-products .pp-index {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  align-self: end;
}

.page-products .pp-index li {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-products .pp-index b {
  color: var(--cyan);
  font-weight: 500;
  font-size: 12px;
}

@media (min-width: 920px) {
  .page-products .pp-hero__grid {
    grid-template-columns: minmax(0, 1fr) 232px;
    gap: clamp(48px, 7vw, 104px);
    align-items: end;
  }
}

/* ---------- 通用小节头 ---------- */

.page-products .pp-sec-head {
  max-width: 62ch;
  margin-bottom: clamp(28px, 4vw, 52px);
}

.page-products .pp-sec-head h2 {
  font-family: var(--font-display);
  font-size: clamp(26px, 3.8vw, 42px);
  line-height: 1.12;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 10px 0 14px;
}

.page-products .pp-sec-sub {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
  margin: 0;
  max-width: 46ch;
}

.page-products .pp-body {
  font-size: 15px;
  line-height: 1.82;
  color: var(--muted);
  max-width: 46ch;
  margin: 0 0 22px;
}

/* ---------- 阶梯式入口 ---------- */

.page-products .pp-stairs {
  display: grid;
  gap: clamp(34px, 5vw, 68px);
}

.page-products .pp-stair {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  padding-bottom: clamp(28px, 4vw, 46px);
  border-bottom: 1px solid var(--line);
}

.page-products .pp-stair:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-products .pp-stair__body h3 {
  font-family: var(--font-display);
  font-size: clamp(20px, 2.5vw, 27px);
  line-height: 1.24;
  font-weight: 600;
  color: var(--ink);
  margin: 12px 0 10px;
}

.page-products .pp-stair__desc {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
  margin: 0;
  max-width: 44ch;
}

.page-products .pp-stair__media .media-frame--device {
  max-width: 260px;
}

.page-products .pp-stair__media .index-num {
  margin: 0;
  line-height: 0.9;
  opacity: 0.34;
}

.page-products .pp-points {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-products .pp-points li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

.page-products .pp-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 10px;
  height: 1px;
  background: var(--cyan);
}

@media (min-width: 900px) {
  .page-products .pp-stair {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 60px);
    align-items: start;
  }

  .page-products .pp-stair:nth-child(2) {
    margin-inline-start: 5%;
  }

  .page-products .pp-stair:nth-child(3) {
    margin-inline-start: 10%;
  }

  .page-products .pp-stair:nth-child(1) .pp-stair__media {
    margin-top: 0;
  }

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

  .page-products .pp-stair:nth-child(3) .pp-stair__media {
    margin-top: 52px;
  }
}

/* ---------- 左右分栏 ---------- */

.page-products .pp-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
}

@media (min-width: 900px) {
  .page-products .pp-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.02fr);
    align-items: center;
    gap: clamp(40px, 6vw, 88px);
  }

  .page-products .pp-split--flip > .pp-split__text {
    order: 2;
  }
}

/* ---------- 步骤与折叠 ---------- */

.page-products .pp-steps {
  list-style: none;
  counter-reset: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .pp-steps li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

.page-products .pp-steps__n {
  flex: none;
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--cyan);
  line-height: 1;
  margin-top: 2px;
}

.page-products .pp-fold {
  border: 1px solid var(--line);
  background: rgba(11, 18, 36, 0.62);
  margin-top: 12px;
}

.page-products .pp-fold summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  padding: 13px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink);
  transition: color 200ms var(--ease);
}

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

.page-products .pp-fold summary::after {
  content: "+";
  flex: none;
  font-size: 15px;
  color: var(--cyan);
}

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

.page-products .pp-fold[open] summary {
  color: var(--cyan);
}

.page-products .pp-fold__body {
  padding: 0 16px 16px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-products .pp-fold__body p {
  margin: 0;
}

/* ---------- 直播线路 ---------- */

.page-products .pp-live__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

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

.page-products .pp-live__card {
  background: linear-gradient(168deg, rgba(12, 42, 42, 0.92), rgba(11, 18, 36, 0.94));
  padding: clamp(22px, 3vw, 32px);
  transition: background 240ms var(--ease);
}

.page-products .pp-live__card:hover {
  background: linear-gradient(168deg, rgba(12, 42, 42, 1), rgba(15, 20, 44, 0.98));
}

.page-products .pp-live__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--purple);
  margin: 0 0 14px;
}

.page-products .pp-live__card h3 {
  font-family: var(--font-display);
  font-size: 21px;
  line-height: 1.28;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 10px;
}

.page-products .pp-live__card p:last-child {
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted);
  margin: 0;
}

/* ---------- 邀约卡片（靛紫翻转） ---------- */

.page-products .pp-invite .pp-sec-head h2 {
  max-width: 22ch;
}

.page-products .pp-flow {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

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

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

.page-products .pp-flow__step {
  background: var(--pp-flow-bg);
  padding: clamp(20px, 2.6vw, 28px);
  transition: background 240ms var(--ease);
}

.page-products .pp-flow__step:hover {
  background: rgba(169, 123, 255, 0.12);
}

.page-products .pp-flow__n {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--cyan);
  margin: 0 0 12px;
}

.page-products .pp-flow__step h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 8px;
}

.page-products .pp-flow__step p:last-child {
  font-size: 14px;
  line-height: 1.76;
  color: var(--muted);
  margin: 0;
}

.page-products .pp-invite__media {
  margin-top: clamp(28px, 4vw, 48px);
}

.page-products .pp-invite__note {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

.page-products .pp-invite__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(55, 232, 211, 0.4);
}

.page-products .pp-invite__note a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 参数表 ---------- */

.page-products .pp-params {
  margin: 0 0 26px;
  border-top: 1px solid var(--line);
}

.page-products .pp-params__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 18px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}

.page-products .pp-params__row dt {
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
}

.page-products .pp-params__row dd {
  margin: 0;
  flex: none;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--cyan);
  text-align: right;
}

/* ---------- 版本记录 ---------- */

.page-products .pp-log__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-products .pp-log__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  background: var(--abyss);
  padding: clamp(20px, 3vw, 30px) clamp(16px, 2.4vw, 26px);
}

@media (min-width: 760px) {
  .page-products .pp-log__item {
    grid-template-columns: 108px minmax(0, 1fr);
    gap: clamp(24px, 3vw, 48px);
    align-items: start;
  }
}

.page-products .pp-log__ver {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 30px);
  letter-spacing: 0.02em;
  color: var(--purple);
  margin: 0;
  line-height: 1;
}

.page-products .pp-log__body h3 {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 6px;
}

.page-products .pp-log__body .pp-points {
  margin-top: 10px;
}

/* ---------- 获取 ---------- */

.page-products .pp-get__panel {
  position: relative;
  padding: clamp(26px, 4.6vw, 58px);
  border: 1px solid var(--line);
  background:
    linear-gradient(128deg, rgba(55, 232, 211, 0.10), transparent 44%),
    linear-gradient(180deg, var(--panel), var(--abyss));
  overflow: hidden;
}

.page-products .pp-get__panel::before {
  content: "";
  position: absolute;
  left: -6%;
  right: 46%;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 139, 51, 0.55), transparent);
  transform: rotate(-6deg);
  transform-origin: left bottom;
  pointer-events: none;
}

.page-products .pp-get__panel > * {
  position: relative;
}

.page-products .pp-get__panel h2 {
  font-family: var(--font-display);
  font-size: clamp(26px, 3.8vw, 44px);
  line-height: 1.1;
  font-weight: 700;
  color: var(--ink);
  margin: 10px 0 16px;
}

.page-products .pp-get__lead {
  font-size: 15px;
  line-height: 1.82;
  color: var(--muted);
  max-width: 52ch;
  margin: 0 0 26px;
}

.page-products .pp-get__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}

.page-products .pp-get__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
  max-width: 50ch;
}

/* ---------- 减弱动态 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-products .pp-live__card,
  .page-products .pp-flow__step,
  .page-products .pp-fold summary {
    transition: none;
  }
}
<<<END>>>