.page-products {
  --pp-gap: clamp(16px, 3vw, 28px);
  overflow-x: hidden;
}

.page-products .section {
  padding-block: clamp(34px, 7vw, 68px);
}

/* ---------- 首屏 ---------- */
.page-products .dl-hero {
  padding-block: clamp(22px, 5vw, 46px) clamp(26px, 5vw, 46px);
  border-bottom: var(--bw-thin) solid var(--line-soft);
}

.page-products .dl-hero h1 {
  margin: 10px 0 18px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.85rem, 7vw, 4rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--snow);
  max-width: 20ch;
}

.page-products .dl-hero .lede {
  max-width: 48ch;
  margin: 0;
  color: var(--text-dim);
  font-size: 1.03rem;
  line-height: 1.85;
}

.page-products .hero-index {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  border-top: var(--bw-thin) solid var(--line-soft);
}

.page-products .hero-index li {
  border-bottom: var(--bw-thin) solid var(--line-soft);
}

.page-products .hero-index a {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 13px 4px;
  color: var(--text);
  text-decoration: none;
  font-size: 1rem;
  line-height: 1.6;
  transition: background-color 0.25s ease, padding-left 0.25s ease;
}

.page-products .hero-index a:hover,
.page-products .hero-index a:focus-visible {
  background: rgba(88, 213, 230, 0.09);
  padding-left: 14px;
}

.page-products .hero-index .mono {
  flex: none;
  color: var(--ice);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
}

/* ---------- 版本对比 ---------- */
.page-products .ver-compare {
  display: grid;
  gap: var(--pp-gap);
  margin-top: 30px;
}

.page-products .ver-col {
  border: var(--bw) solid var(--line);
  background: var(--indigo);
  box-shadow: var(--shadow);
  padding: 20px 18px 14px;
}

.page-products .ver-col--new {
  border-color: var(--ice);
}

.page-products .ver-col--stable {
  border-color: var(--fl-blue);
}

.page-products .ver-head {
  padding-bottom: 14px;
  margin-bottom: 4px;
  border-bottom: var(--bw-thin) solid var(--line);
}

.page-products .ver-head h3 {
  margin: 12px 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.12rem, 3.2vw, 1.5rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--snow);
}

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

.page-products .ver-row {
  display: grid;
  grid-template-columns: 4.2em 1fr;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--line-soft);
}

.page-products .ver-row:last-child {
  border-bottom: 0;
}

.page-products .ver-key {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--haze);
  padding-top: 3px;
}

.page-products .ver-val {
  color: var(--text);
  font-size: 0.94rem;
  line-height: 1.72;
}

.page-products .ver-row.is-diff {
  background: rgba(233, 179, 60, 0.1);
  box-shadow: inset 3px 0 0 var(--fl-yellow);
  padding-left: 12px;
  padding-right: 8px;
}

/* ---------- 三主干 ---------- */
.page-products .tree {
  margin-top: 34px;
}

.page-products .tree-lines {
  display: none;
}

.page-products .tree-cols {
  display: grid;
  gap: var(--pp-gap);
}

.page-products .branch {
  border: var(--bw-thin) solid var(--line);
  border-top-width: 6px;
  background: var(--night-deep);
  box-shadow: var(--shadow);
  padding: 18px 16px 20px;
}

.page-products .branch--data {
  border-top-color: var(--ice);
}

.page-products .branch--heat {
  border-top-color: var(--fl-yellow);
}

.page-products .branch--sub {
  border-top-color: var(--fl-green);
}

.page-products .branch-index {
  margin: 0;
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  color: var(--haze);
}

.page-products .branch h3 {
  margin: 10px 0 12px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.18rem, 3.4vw, 1.55rem);
  letter-spacing: -0.01em;
  color: var(--snow);
}

.page-products .branch p {
  margin: 0 0 12px;
  color: var(--text-dim);
  font-size: 0.94rem;
  line-height: 1.8;
  max-width: 42ch;
}

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

/* ---------- 首次四步 ---------- */
.page-products .firstrun {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-products .firstrun .step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  align-items: start;
  border: var(--bw-thin) solid var(--line);
  background: var(--indigo);
  padding: 18px 16px;
}

.page-products .firstrun .step-index {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: var(--bw-thin) solid var(--obsidian);
  background: var(--ice);
  color: var(--obsidian);
  font-size: 0.9rem;
  font-weight: 700;
}

.page-products .firstrun .step-title {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.05rem;
  line-height: 1.4;
  color: var(--snow);
}

.page-products .firstrun .step-text {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.94rem;
  line-height: 1.78;
}

/* ---------- 四阶自查 ---------- */
.page-products .ladder {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
  counter-reset: ladder;
}

.page-products .ladder-item {
  position: relative;
  border: var(--bw-thin) solid var(--line);
  background: var(--night);
  padding: 18px 16px 18px 70px;
}

.page-products .ladder-item::before {
  counter-increment: ladder;
  content: "0" counter(ladder);
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 52px;
  display: grid;
  place-items: center;
  background: var(--fl-blue);
  color: var(--obsidian);
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  border-right: var(--bw-thin) solid var(--obsidian);
}

.page-products .ladder-item:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 25px;
  bottom: -14px;
  width: 2px;
  height: 14px;
  background: var(--fl-blue);
}

.page-products .ladder-title {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.06rem;
  line-height: 1.42;
  color: var(--snow);
}

.page-products .ladder-item > p {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.94rem;
  line-height: 1.8;
  max-width: 58ch;
}

.page-products .ladder-next {
  margin-top: 12px !important;
  padding-top: 10px;
  border-top: 1px dashed var(--line-soft);
  font-family: var(--font-mono);
  font-size: 0.79rem;
  letter-spacing: 0.02em;
  color: var(--ice);
}

.page-products .ladder-item:last-child .ladder-next {
  color: var(--fl-yellow);
}

/* ---------- 订阅频次 ---------- */
.page-products .freq {
  display: grid;
  gap: var(--pp-gap);
  margin-top: 30px;
}

.page-products .freq-item {
  display: flex;
  flex-direction: column;
  border: var(--bw-thin) solid var(--line);
  background: var(--indigo);
  padding: 18px 16px;
}

.page-products .freq-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.page-products .freq-head h3 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
  color: var(--snow);
}

.page-products .freq-text {
  margin: 0 0 18px;
  color: var(--text-dim);
  font-size: 0.94rem;
  line-height: 1.78;
}

.page-products .freq-bar {
  height: 14px;
  margin-top: auto;
  border: 2px solid var(--obsidian);
  background: linear-gradient(90deg, var(--ice), var(--fl-blue));
}

.page-products .freq-item--full .freq-bar {
  width: 100%;
}

.page-products .freq-item--key .freq-bar {
  width: 58%;
}

.page-products .freq-item--score .freq-bar {
  width: 22%;
}

.page-products .freq-meta {
  margin: 10px 0 0;
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  color: var(--haze);
}

/* ---------- 迭代时间带 ---------- */
.page-products .timeline {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-products .tl-node {
  position: relative;
  padding: 0 0 4px 22px;
  border-left: var(--bw-thin) solid var(--line);
}

.page-products .tl-node::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 4px;
  width: 12px;
  height: 12px;
  background: var(--fl-yellow);
  border: 2px solid var(--obsidian);
}

.page-products .tl-iter {
  margin: 0 0 8px;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--haze);
}

.page-products .tl-node h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.02rem;
  line-height: 1.42;
  color: var(--snow);
}

.page-products .tl-node p:not(.tl-iter) {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.92rem;
  line-height: 1.78;
}

/* ---------- 图片框 ---------- */
.page-products .img-frame {
  margin: clamp(24px, 4vw, 36px) 0 0;
}

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

/* ---------- 尾部通道 ---------- */
.page-products .cta-panel {
  border: var(--bw) solid var(--ice);
  background: var(--indigo);
  box-shadow: var(--shadow);
  padding: clamp(20px, 4vw, 34px);
}

.page-products .cta-title {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.3rem, 4.4vw, 2rem);
  letter-spacing: -0.02em;
  color: var(--snow);
}

.page-products .cta-panel > p {
  margin: 0 0 22px;
  color: var(--text-dim);
  font-size: 0.96rem;
  line-height: 1.85;
  max-width: 64ch;
}

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

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-products .hero-index {
    display: grid;
    grid-template-columns: 1fr 1fr;
    column-gap: 32px;
    border-bottom: var(--bw-thin) solid var(--line-soft);
  }

  .page-products .hero-index li {
    border-bottom: 0;
    border-top: var(--bw-thin) solid var(--line-soft);
  }

  .page-products .hero-index a {
    padding: 14px 6px;
  }

  .page-products .firstrun {
    grid-template-columns: 1fr 1fr;
  }

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

@media (min-width: 860px) {
  .page-products .ver-compare {
    grid-template-columns: 1fr 1fr;
  }

  .page-products .tree-lines {
    display: block;
    width: 100%;
    height: 72px;
  }

  .page-products .tree-lines path {
    fill: none;
    stroke: var(--line);
    stroke-width: 2;
  }

  .page-products .tree-cols {
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
  }

  .page-products .timeline {
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 36px;
  }

  .page-products .tl-node {
    padding: 24px 18px 0 0;
    border-left: 0;
    border-top: var(--bw-thin) solid var(--line);
  }

  .page-products .tl-node::before {
    left: 0;
    top: -7px;
  }

  .page-products .ladder-item {
    padding: 20px 22px 20px 78px;
  }
}
<<<END>>>