.page-products {
  --cmp-old: rgba(169, 195, 204, 0.3);
  --cmp-new: rgba(242, 166, 90, 0.24);
  --cmp-old-edge: #A9C3CC;
  --cmp-new-edge: #F2A65A;
  background: linear-gradient(180deg, var(--paper-deep), var(--paper) 440px);
  color: var(--ink);
  overflow-x: hidden;
}

.page-products img {
  max-width: 100%;
  height: auto;
}

.page-products .breadcrumb {
  padding-top: clamp(14px, 2.4vw, 22px);
}

/* ---------- 首屏 ---------- */
.page-products .dl-hero {
  padding: clamp(18px, 3vw, 30px) 0 clamp(30px, 5vw, 54px);
}

.page-products .dl-hero__grid {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
  align-items: center;
}

.page-products .dl-hero__copy {
  min-width: 0;
}

.page-products .dl-hero__tag {
  display: inline-block;
  margin-bottom: 14px;
}

.page-products .dl-hero h1 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(29px, 6vw, 50px);
  line-height: 1.1;
  letter-spacing: -0.015em;
  margin: 0 0 18px;
  color: var(--ink);
}

.page-products .dl-hero__lede {
  font-size: clamp(16px, 0.4vw + 14px, 18px);
  line-height: 1.8;
  color: var(--ink-soft);
  max-width: 50ch;
  margin: 0 0 24px;
}

.page-products .dl-hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
}

.page-products .dl-hero__note {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--teal-gray);
}

.page-products .dl-hero__figure {
  margin: 0;
  background: var(--card);
  border: var(--line-ink);
  padding: 10px;
  box-shadow: 10px 10px 0 rgba(36, 81, 90, 0.12);
}

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

/* ---------- 章节通用 ---------- */
.page-products .dl-section {
  padding: clamp(30px, 5vw, 52px) 0;
  border-top: var(--line);
}

.page-products .dl-section__lede {
  max-width: 62ch;
  margin: 14px 0 0;
  color: var(--ink-soft);
  line-height: 1.8;
  font-size: 15.5px;
}

.page-products .chapter {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.page-products .chapter__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  border: var(--line-ink);
  padding: 3px 7px;
  color: var(--ink);
  background: var(--card);
}

.page-products .chapter__name {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(21px, 3.4vw, 31px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 0;
}

/* ---------- 01 下载卡片 ---------- */
.page-products .dl-cards {
  display: grid;
  gap: 16px;
  margin-top: 24px;
}

.page-products .dl-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
  background: var(--card);
  border: 1px solid var(--grid);
  border-top: 4px solid var(--lake);
  padding: 20px 18px 18px;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-products .dl-card:first-child {
  border-top-color: var(--amber);
}

.page-products .dl-card h3 {
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 800;
  margin: 0;
}

.page-products .dl-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-products .dl-card__link {
  margin-top: auto;
  width: fit-content;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--deep-teal);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-products .dl-card__link::after {
  content: "→";
  transition: transform var(--dur) var(--ease);
}

.page-products .dl-card__link:hover,
.page-products .dl-card__link:focus-visible {
  color: var(--amber-deep);
  border-bottom-color: var(--amber-deep);
  outline: none;
}

.page-products .dl-card__link:hover::after,
.page-products .dl-card__link:focus-visible::after {
  transform: translateX(4px);
}

.page-products .dl-card:hover {
  box-shadow: 0 10px 0 -6px rgba(63, 124, 140, 0.28);
}

/* ---------- 02 双版本对照 ---------- */
.page-products .compare-grid {
  display: grid;
  gap: 26px;
  margin-top: 24px;
}

.page-products .compare-intro h3 {
  font-family: var(--font-head);
  font-size: clamp(20px, 2.8vw, 26px);
  font-weight: 800;
  margin: 0 0 12px;
  line-height: 1.25;
}

.page-products .compare-intro p {
  margin: 0 0 14px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-products .compare-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--ink-soft);
}

.page-products .compare-legend li {
  display: flex;
  align-items: center;
  gap: 6px;
}

.page-products .compare-legend i {
  display: inline-block;
  width: 14px;
  height: 14px;
}

.page-products .legend-old {
  background: var(--cmp-old-edge);
}

.page-products .legend-new {
  background: var(--cmp-new-edge);
}

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

.page-products .compare-figure {
  margin: 0 0 18px;
  background: var(--card);
  border: 1px solid var(--grid);
  padding: 8px;
}

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

.page-products .compare-table {
  background: var(--card);
  border: 1px solid var(--grid);
}

.page-products .compare-row {
  display: grid;
  gap: 8px;
  padding: 14px;
  border-top: 1px solid var(--grid);
  transition: background var(--dur) var(--ease);
}

.page-products .compare-row:first-child {
  border-top: 0;
}

.page-products .compare-row--head {
  display: none;
  background: var(--paper-deep);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}

.page-products .compare-label {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--teal-gray);
}

.page-products .compare-cell {
  display: block;
  font-size: 15px;
  line-height: 1.6;
  padding: 8px 10px;
  border-left: 3px solid transparent;
  color: var(--ink);
}

.page-products .compare-cell--old {
  background: var(--cmp-old);
  border-left-color: var(--cmp-old-edge);
}

.page-products .compare-cell--new {
  background: var(--cmp-new);
  border-left-color: var(--cmp-new-edge);
}

.page-products .compare-cell--old::before {
  content: "旧版";
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--lake);
  margin-bottom: 2px;
}

.page-products .compare-cell--new::before {
  content: "新版 v9.2";
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--amber-ink);
  margin-bottom: 2px;
}

.page-products .compare-row:not(.compare-row--head):hover {
  background: rgba(63, 124, 140, 0.07);
}

.page-products .compare-row:not(.compare-row--head):hover .compare-cell--new {
  border-left-color: var(--amber-deep);
}

.page-products .compare-row:not(.compare-row--head):hover .compare-cell--old {
  border-left-color: var(--lake);
}

/* ---------- 03 客户端功能 ---------- */
.page-products .feature-grid {
  display: grid;
  gap: 26px;
  margin-top: 24px;
}

.page-products .feature-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-products .feature-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding-bottom: 18px;
  border-bottom: 1px dashed var(--grid);
}

.page-products .feature-item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-products .feature-item__num {
  display: grid;
  place-items: center;
  width: 34px;
  height: 26px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--lake);
  border: 1px solid var(--lake);
}

.page-products .feature-item h3 {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 800;
  margin: 0 0 6px;
}

.page-products .feature-item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-products .feature-path {
  display: block;
  width: 100%;
  max-width: 360px;
  height: auto;
  margin: 20px 0 0;
}

.page-products .feature-figure {
  margin: 0;
  background: var(--card);
  border: 1px solid var(--grid);
  padding: 8px;
}

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

.page-products .scene-grid {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}

.page-products .scene {
  background: var(--paper-deep);
  border-left: 3px solid var(--teal-gray);
  padding: 16px;
}

.page-products .scene h4 {
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 800;
  margin: 0 0 6px;
}

.page-products .scene p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* ---------- 04 版本记录 ---------- */
.page-products .log-figure {
  margin: 22px 0 0;
  background: var(--card);
  border: 1px solid var(--grid);
  padding: 8px;
}

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

.page-products .log-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  border-top: var(--line);
}

.page-products .log-item {
  display: grid;
  gap: 8px;
  padding: 16px 0;
  border-bottom: var(--line);
}

.page-products .log-item__ver {
  width: fit-content;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--ink);
  background: var(--card);
  border: var(--line-ink);
  padding: 3px 8px;
}

.page-products .log-item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-products .log-note {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ---------- 05 注册与上手 ---------- */
.page-products .start-grid {
  display: grid;
  gap: 26px;
  margin-top: 22px;
}

.page-products .start-steps {
  list-style: none;
  counter-reset: step;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-products .start-steps li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-products .start-steps li::before {
  content: counter(step, decimal-leading-zero);
  display: grid;
  place-items: center;
  height: 28px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--amber-ink);
  background: var(--cmp-new);
  border: 1px solid var(--orange);
}

.page-products .start-actions {
  margin-top: 22px;
}

.page-products .start-figure {
  margin: 0;
  background: var(--card);
  border: 1px solid var(--grid);
  padding: 8px;
  box-shadow: 8px 8px 0 rgba(242, 166, 90, 0.22);
}

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

/* ---------- 延伸入口 ---------- */
.page-products .dl-more {
  border-top: var(--line);
  padding: clamp(26px, 4vw, 40px) 0 clamp(36px, 5vw, 56px);
}

.page-products .dl-more h2 {
  font-family: var(--font-head);
  font-size: clamp(19px, 2.6vw, 24px);
  font-weight: 800;
  margin: 0 0 16px;
}

.page-products .dl-more ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-products .dl-more a {
  display: block;
  padding: 15px 16px;
  background: var(--card);
  border: 1px solid var(--grid);
  border-left: 3px solid var(--lake);
  text-decoration: none;
  color: var(--ink);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-products .dl-more a:hover,
.page-products .dl-more a:focus-visible {
  border-color: var(--amber);
  border-left-color: var(--amber);
  transform: translateY(-2px);
  outline: none;
}

.page-products .dl-more strong {
  display: block;
  font-family: var(--font-head);
  font-size: 15.5px;
  margin-bottom: 5px;
}

.page-products .dl-more span {
  display: block;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--ink-soft);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-products .compare-row--head {
    display: grid;
  }

  .page-products .compare-row {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.15fr) minmax(0, 1.15fr);
    gap: 14px;
    align-items: start;
    padding: 14px 16px;
  }

  .page-products .compare-cell--old::before,
  .page-products .compare-cell--new::before {
    display: none;
  }

  .page-products .compare-cell {
    padding: 6px 10px;
  }
}

@media (min-width: 760px) {
  .page-products .dl-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .log-item {
    grid-template-columns: 130px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }

  .page-products .scene-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-products .dl-more ul {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (min-width: 900px) {
  .page-products .dl-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: 44px;
  }

  .page-products .feature-grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 40px;
    align-items: start;
  }

  .page-products .start-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    gap: 40px;
    align-items: center;
  }
}

@media (min-width: 960px) {
  .page-products .compare-grid {
    grid-template-columns: minmax(0, 0.74fr) minmax(0, 1.6fr);
    gap: 40px;
    align-items: start;
  }

  .page-products .compare-intro {
    position: sticky;
    top: 24px;
  }
}

@media (min-width: 1040px) {
  .page-products .dl-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

  .page-products .dl-card:nth-child(2) {
    transform: translateY(24px);
  }

  .page-products .dl-card:nth-child(3) {
    transform: translateY(-12px);
  }

  .page-products .dl-card:nth-child(2):hover {
    transform: translateY(20px);
  }

  .page-products .dl-card:nth-child(3):hover {
    transform: translateY(-16px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .dl-card,
  .page-products .dl-card__link,
  .page-products .dl-card__link::after,
  .page-products .compare-row,
  .page-products .dl-more a {
    transition: none;
  }

  .page-products .dl-card:nth-child(2),
  .page-products .dl-card:nth-child(3) {
    transform: none;
  }
}