.page-products {
  --pp-rail-w: minmax(190px, 3fr);
  --pp-panel-gap: clamp(24px, 3.4vw, 60px);
  --pp-card-bg: rgba(12, 42, 32, .55);
  --pp-focus: 0 0 0 2px var(--cyan);
}

/* ---------- 面包屑 ---------- */
.page-products .pp-crumb {
  padding-top: clamp(18px, 2.4vw, 30px);
}

.page-products .pp-crumb a {
  color: var(--muted);
  text-decoration: none;
  transition: color var(--ease);
}

.page-products .pp-crumb a:hover,
.page-products .pp-crumb a:focus-visible {
  color: var(--cyan);
}

/* ---------- 首屏 ---------- */
.page-products .pp-hero {
  padding-top: clamp(24px, 3.6vw, 52px);
  padding-bottom: clamp(30px, 4.6vw, 68px);
}

.page-products .pp-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 3.4vw, 56px);
}

.page-products .pp-hero-copy h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 7.2vw, 74px);
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-products .pp-hero-copy .lede {
  margin-top: clamp(16px, 2vw, 24px);
  max-width: 62ch;
  color: var(--text-soft);
  font-size: clamp(16px, 1.5vw, 18px);
  line-height: 1.78;
}

.page-products .pp-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 2.6vw, 34px);
}

.page-products .pp-download {
  transition: box-shadow var(--ease), filter var(--ease), transform var(--ease);
}

.page-products .pp-download:hover,
.page-products .pp-download:focus-visible {
  filter: brightness(1.12);
  box-shadow: 0 10px 26px rgba(255, 122, 47, .34);
  transform: translateY(-2px);
}

.page-products .pp-hero-copy .status-hint {
  margin-top: 14px;
  max-width: 58ch;
}

/* 版本速览 */
.page-products .pp-hero-side {
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(47, 242, 196, .07), transparent 42%),
    var(--pp-card-bg);
  box-shadow: var(--shadow-1);
  padding: clamp(18px, 2.2vw, 28px);
  align-self: start;
}

.page-products .pp-side-title {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan-dim);
  margin: 0 0 14px;
}

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

.page-products .pp-spec {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line-soft);
}

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

.page-products .pp-spec-k {
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.page-products .pp-spec-v {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--paper);
  text-align: right;
}

/* ---------- 步骤骨架（技能树） ---------- */
.page-products .pp-step {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  padding-top: clamp(30px, 4vw, 58px);
  padding-bottom: clamp(30px, 4vw, 58px);
  padding-inline: var(--gutter);
  max-width: var(--shell);
  margin-inline: auto;
}

.page-products .pp-rail {
  position: relative;
}

.page-products .pp-rail::before {
  content: "";
  position: absolute;
  left: 0;
  top: -18px;
  width: 64px;
  height: 2px;
  background: var(--cyan);
}

.page-products .pp-node {
  display: flex;
  gap: 14px;
  padding: 10px 14px 10px 0;
  border-left: 2px solid var(--line);
  padding-left: 14px;
  text-decoration: none;
  transition: border-color var(--ease), background-color var(--ease);
  scroll-margin-top: 90px;
}

.page-products .pp-node:hover,
.page-products .pp-node:focus-visible {
  border-left-color: var(--cyan);
  background: rgba(47, 242, 196, .06);
  outline: none;
}

.page-products .pp-node:focus-visible {
  box-shadow: var(--pp-focus);
}

.page-products .pp-node-num {
  font-family: var(--font-mono);
  font-weight: 300;
  font-size: 26px;
  line-height: 1;
  color: var(--cyan-dim);
  letter-spacing: -0.02em;
  flex: none;
}

.page-products .pp-node-body {
  display: block;
}

.page-products .pp-node-title {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.01em;
  color: var(--paper);
  line-height: 1.35;
}

.page-products .pp-node-hint {
  display: block;
  margin-top: 5px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted);
  transition: color var(--ease);
}

.page-products .pp-node:hover .pp-node-hint,
.page-products .pp-node:focus-visible .pp-node-hint {
  color: var(--text-soft);
}

/* 面板 */
.page-products .pp-panel {
  min-width: 0;
  scroll-margin-top: 90px;
}

.page-products .pp-h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 3.2vw, 38px);
  line-height: 1.06;
  letter-spacing: -0.015em;
  color: var(--paper);
  max-width: 22ch;
}

.page-products .pp-h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(19px, 2.1vw, 24px);
  line-height: 1.15;
  color: var(--paper);
}

.page-products .pp-panel .prose {
  margin-top: 16px;
  max-width: 68ch;
  color: var(--text-soft);
}

/* ---------- 能力清单 ---------- */
.page-products .pp-caps {
  list-style: none;
  margin: clamp(20px, 2.6vw, 32px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line);
}

.page-products .pp-cap {
  background: var(--ink);
  padding: 16px 18px;
  display: grid;
  gap: 6px;
  transition: background-color var(--ease);
}

.page-products .pp-cap:hover {
  background: var(--panel);
}

.page-products .pp-cap-k {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.page-products .pp-cap-d {
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 图文分栏 ---------- */
.page-products .pp-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 44px);
}

.page-products .pp-split-copy {
  min-width: 0;
}

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

.page-products .pp-fig--mid {
  margin-top: clamp(26px, 3.4vw, 44px);
}

.page-products .pp-fig .figure-media {
  border: 1px solid var(--line);
  box-shadow: var(--shadow-1);
  overflow: hidden;
  background: var(--panel);
}

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

.page-products .pp-fig .figure-cap {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
}

.page-products .pp-fig--portrait .figure-media {
  max-width: 330px;
  margin-inline: auto;
}

/* ---------- 色带留白 ---------- */
.page-products .pp-breath {
  margin-top: clamp(30px, 4vw, 56px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 160% at 12% 0%, rgba(47, 242, 196, .1), transparent 58%),
    var(--band);
  padding-block: clamp(34px, 5vw, 72px);
}

.page-products .pp-breath-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3vw, 44px);
  align-items: end;
}

.page-products .pp-breath-line {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 2.6vw, 32px);
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--paper);
  max-width: 30ch;
}

.page-products .pp-breath-note {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
  max-width: 52ch;
}

.page-products .pp-ruler-wrap {
  min-width: 0;
}

.page-products .pp-ruler {
  display: block;
  width: 100%;
  height: 56px;
}

.page-products .pp-ruler-cap {
  margin: 8px 0 0;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ---------- 对照表 ---------- */
.page-products .pp-table-wrap {
  margin-top: clamp(22px, 3vw, 34px);
  overflow-x: auto;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-1);
  -webkit-overflow-scrolling: touch;
}

.page-products .pp-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-products .pp-table-cap {
  caption-side: top;
  text-align: left;
  padding: 14px 16px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}

.page-products .pp-table thead th {
  text-align: left;
  padding: 13px 16px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

.page-products .pp-table tbody tr {
  transition: background-color var(--ease);
}

.page-products .pp-table tbody tr:nth-child(even) {
  background: rgba(12, 42, 32, .38);
}

.page-products .pp-table tbody tr:hover,
.page-products .pp-table tbody tr:focus-within {
  background: rgba(47, 242, 196, .08);
}

.page-products .pp-table tbody th {
  text-align: left;
  padding: 14px 16px;
  font-weight: 600;
  font-size: 13px;
  color: var(--paper);
  border-bottom: 1px solid var(--line-soft);
  white-space: nowrap;
}

.page-products .pp-table tbody td {
  padding: 14px 16px;
  color: var(--muted);
  line-height: 1.65;
  border-bottom: 1px solid var(--line-soft);
  border-left: 1px solid var(--line-soft);
}

.page-products .pp-table tbody tr:last-child th,
.page-products .pp-table tbody tr:last-child td {
  border-bottom: 0;
}

/* ---------- 标签 ---------- */
.page-products .pp-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: clamp(16px, 2vw, 24px) 0 0;
  padding: 0;
}

/* ---------- 设备要求 ---------- */
.page-products .pp-reqs {
  margin: clamp(22px, 3vw, 34px) 0 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.page-products .pp-req {
  display: grid;
  gap: 8px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-products .pp-req dt {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.05em;
  color: var(--cyan-dim);
}

.page-products .pp-req dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-soft);
  max-width: 64ch;
}

/* ---------- 订阅索引 ---------- */
.page-products .pp-index {
  margin-top: clamp(20px, 2.6vw, 30px);
}

.page-products .pp-index .index-item {
  display: grid;
  gap: 6px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-soft);
}

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

.page-products .pp-index .index-key {
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan-dim);
}

/* ---------- 排查步骤 ---------- */
.page-products .pp-steps-fix {
  list-style: none;
  counter-reset: none;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-left: 2px solid var(--line);
}

.page-products .pp-fix-item {
  display: flex;
  gap: 16px;
  padding: 15px 0 15px 20px;
  position: relative;
}

.page-products .pp-fix-item::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 24px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan-dim);
  transition: background-color var(--ease);
}

.page-products .pp-fix-item:hover::before {
  background: var(--cyan);
}

.page-products .pp-fix-num {
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1.5;
  color: var(--orange);
  flex: none;
  min-width: 18px;
}

.page-products .pp-fix-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-soft);
  max-width: 66ch;
}

.page-products .pp-next {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3vw, 36px);
}

/* ---------- 收口 ---------- */
.page-products .pp-outro {
  padding-top: clamp(30px, 4vw, 56px);
  padding-bottom: clamp(38px, 5vw, 72px);
  border-top: 1px solid var(--line);
}

.page-products .pp-outro-line {
  margin: 0 0 clamp(18px, 2.4vw, 28px);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 3vw, 34px);
  line-height: 1.14;
  letter-spacing: -0.015em;
  color: var(--paper);
  max-width: 26ch;
}

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

/* ---------- 平板及以上 ---------- */
@media (min-width: 760px) {
  .page-products .pp-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-products .pp-split--flip {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
  }

  .page-products .pp-split--flip .pp-split-copy {
    order: 1;
  }

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

  .page-products .pp-fig--portrait .figure-media {
    margin-inline: 0;
  }

  .page-products .pp-fig--offset {
    margin-top: clamp(24px, 3.4vw, 48px);
  }

  .page-products .pp-req {
    grid-template-columns: minmax(130px, 2fr) minmax(0, 10fr);
    gap: 20px;
    align-items: baseline;
  }

  .page-products .pp-index .index-item {
    grid-template-columns: minmax(110px, 2fr) minmax(0, 10fr);
    gap: 20px;
    align-items: baseline;
  }
}

/* ---------- 桌面步骤主干 ---------- */
@media (min-width: 940px) {
  .page-products .pp-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }

  .page-products .pp-step {
    grid-template-columns: var(--pp-rail-w) minmax(0, 9fr);
    gap: var(--pp-panel-gap);
  }

  .page-products .pp-rail {
    position: sticky;
    top: 104px;
    align-self: start;
  }

  .page-products .pp-node-hint {
    max-height: 0;
    margin-top: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height var(--ease), opacity var(--ease), margin-top var(--ease), color var(--ease);
  }

  .page-products .pp-node:hover .pp-node-hint,
  .page-products .pp-node:focus-visible .pp-node-hint {
    max-height: 56px;
    margin-top: 5px;
    opacity: 1;
  }

  .page-products .pp-breath-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: end;
  }

  .page-products .pp-fig--wide {
    margin-left: calc(var(--pp-panel-gap) * -0.34);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pp-node,
  .page-products .pp-node-hint,
  .page-products .pp-cap,
  .page-products .pp-table tbody tr,
  .page-products .pp-fix-item::before,
  .page-products .pp-download {
    transition: none;
  }

  .page-products .pp-download:hover,
  .page-products .pp-download:focus-visible {
    transform: none;
  }
}