.page-products {
  --pp-gap: clamp(16px, 2.4vw, 28px);
  --pp-step: 52px;
}

.page-products h2 {
  font-size: clamp(1.45rem, 3.4vw, 2.25rem);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: -0.01em;
}

.page-products h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.45;
}

.page-products p {
  line-height: 1.7;
}

/* ---------- 01 首屏 ---------- */

.page-products .dl-open {
  padding: clamp(26px, 4.5vw, 52px) 0 clamp(34px, 5.5vw, 62px);
}

.page-products .dl-open__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
}

.page-products .dl-open__lead .display {
  font-size: clamp(2rem, 5vw, 3.6rem);
  line-height: 1.06;
  margin: 0.32em 0 0.42em;
}

.page-products .dl-open__lead .lede {
  max-width: 32ch;
  color: var(--text);
}

.page-products .dl-open__lead .prose {
  max-width: 44ch;
  margin-top: 14px;
  color: var(--muted);
}

.page-products .dl-open__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-products .dl-open__rail {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.page-products .dl-open__fact {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 16px 20px;
  background: var(--bg-alt);
}

.page-products .dl-open__num {
  font-size: clamp(1.7rem, 3.6vw, 2.3rem);
  font-weight: 700;
  line-height: 1;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.page-products .dl-open__lab {
  font-size: 0.75rem;
  line-height: 1.5;
  color: var(--muted);
  letter-spacing: 0.02em;
}

@media (min-width: 900px) {
  .page-products .dl-open__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
  }
}

/* ---------- 02 版本记录 ---------- */

.page-products .dl-vers__head {
  max-width: 62ch;
  margin-bottom: clamp(22px, 3.4vw, 36px);
}

.page-products .dl-vers__head h2 {
  margin: 10px 0 14px;
}

.page-products .dl-vers__head .prose {
  color: var(--muted);
}

.page-products .dl-vers__banner {
  margin: 0 0 clamp(26px, 4vw, 46px);
}

.page-products .dl-vers__stack {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2vw, 20px);
}

.page-products .dl-vers__card {
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--surface);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-products .dl-vers__card .card__head {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-products .dl-vers__card--v4 {
  background:
    linear-gradient(158deg, rgba(200, 255, 60, 0.09), transparent 56%),
    var(--surface);
  border-left: 3px solid var(--accent);
}

.page-products .dl-vers__card--v3 {
  border-left: 3px solid var(--accent-2);
}

.page-products .dl-vers__card--v2,
.page-products .dl-vers__card--v1 {
  border-left: 3px solid var(--line);
}

.page-products .dl-vers__card p {
  color: var(--muted);
}

.page-products .dl-vers__list {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-products .dl-vers__list li {
  position: relative;
  padding-left: 18px;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--text);
}

.page-products .dl-vers__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 2px;
  background: var(--accent);
}

@media (min-width: 780px) {
  .page-products .dl-vers__stack {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    align-items: start;
  }
  .page-products .dl-vers__card--v4 { grid-column: 1 / span 7; }
  .page-products .dl-vers__card--v3 { grid-column: 8 / span 5; margin-top: 56px; }
  .page-products .dl-vers__card--v2 { grid-column: 2 / span 5; margin-top: 6px; }
  .page-products .dl-vers__card--v1 { grid-column: 8 / span 5; margin-top: 44px; }
}

/* ---------- 03 入口位置对照 ---------- */

.page-products .dl-compare__head {
  max-width: 58ch;
  margin-bottom: clamp(24px, 3.6vw, 42px);
}

.page-products .dl-compare__head h2 {
  margin: 10px 0 14px;
}

.page-products .dl-compare__head .prose {
  color: var(--muted);
}

.page-products .dl-compare__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.2vw, 40px);
}

.page-products .dl-compare__panel {
  padding: clamp(18px, 2.2vw, 26px);
  border: 1px solid var(--line);
  background: var(--surface);
}

.page-products .dl-compare__panel h3 {
  margin: 10px 0 8px;
}

.page-products .dl-compare__panel p {
  color: var(--muted);
  font-size: 0.9375rem;
}

.page-products .dl-compare__panel--old {
  border-left: 3px solid var(--muted);
  opacity: 0.86;
}

.page-products .dl-compare__panel--new {
  border-left: 3px solid var(--accent);
  margin-top: 16px;
}

.page-products .dl-compare__tag {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-2);
}

.page-products .dl-compare__panel--old .dl-compare__tag {
  color: var(--muted);
}

.page-products .dl-compare__fig {
  margin: 0;
}

@media (min-width: 880px) {
  .page-products .dl-compare__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: start;
  }
  .page-products .dl-compare__panel--new {
    margin-left: 40px;
  }
}

/* ---------- 04 切换通道 ---------- */

.page-products .dl-switch__head {
  max-width: 58ch;
  margin-bottom: clamp(24px, 3.6vw, 40px);
}

.page-products .dl-switch__head h2 {
  margin: 10px 0 14px;
}

.page-products .dl-switch__head .prose {
  color: var(--muted);
}

.page-products .dl-switch__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2.4vw, 24px);
}

.page-products .dl-switch__way {
  padding: clamp(20px, 2.6vw, 30px);
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.42);
}

.page-products .dl-switch__way--a {
  border-top: 3px solid var(--accent);
}

.page-products .dl-switch__way--b {
  border-top: 3px solid var(--accent-2);
}

.page-products .dl-switch__idx {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
}

.page-products .dl-switch__way h3 {
  margin: 10px 0 10px;
  font-size: 1.25rem;
}

.page-products .dl-switch__way p {
  color: var(--muted);
  font-size: 0.9375rem;
}

.page-products .dl-switch__scene {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  color: var(--text) !important;
  font-size: 0.875rem !important;
}

.page-products .dl-switch__fig {
  margin: 0;
}

@media (min-width: 860px) {
  .page-products .dl-switch__grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    align-items: start;
  }
  .page-products .dl-switch__way--a { grid-column: 1 / span 5; }
  .page-products .dl-switch__way--b { grid-column: 6 / span 5; margin-top: 58px; }
  .page-products .dl-switch__fig  { grid-column: 1 / -1; margin-top: 30px; }
}

/* ---------- 05 关注列表阅读顺序 ---------- */

.page-products .dl-read__head {
  max-width: 58ch;
  margin-bottom: clamp(24px, 3.6vw, 42px);
}

.page-products .dl-read__head h2 {
  margin: 10px 0 14px;
}

.page-products .dl-read__head .prose {
  color: var(--muted);
}

.page-products .dl-read__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.4vw, 44px);
}

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

.page-products .dl-read__row {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 16px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.page-products .dl-read__row:last-child {
  border-bottom: 1px solid var(--line);
}

.page-products .dl-read__k {
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  color: var(--accent-2);
  padding-top: 3px;
}

.page-products .dl-read__body h3 {
  font-size: 1.1rem;
}

.page-products .dl-read__body p {
  margin-top: 6px;
  color: var(--muted);
  font-size: 0.9375rem;
}

.page-products .dl-read__fig {
  margin: 0;
}

@media (min-width: 900px) {
  .page-products .dl-read__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    align-items: start;
  }
}

/* ---------- 06 四步操作路径 ---------- */

.page-products .dl-steps__head {
  max-width: 56ch;
  margin-bottom: clamp(24px, 3.6vw, 44px);
}

.page-products .dl-steps__head h2 {
  margin: 10px 0 14px;
}

.page-products .dl-steps__head .prose {
  color: var(--muted);
}

.page-products .dl-steps__wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 52px);
}

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

.page-products .dl-tree__node {
  position: relative;
  display: grid;
  grid-template-columns: var(--pp-step) minmax(0, 1fr);
  gap: 18px;
  padding-bottom: 30px;
}

.page-products .dl-tree__node:last-child {
  padding-bottom: 0;
}

.page-products .dl-tree__node:not(:last-child)::before {
  content: "";
  position: absolute;
  left: calc(var(--pp-step) / 2 - 1px);
  top: calc(var(--pp-step) + 4px);
  bottom: 4px;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), var(--line));
  opacity: 0.55;
}

.page-products .dl-tree__dot {
  width: var(--pp-step);
  height: var(--pp-step);
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--accent);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  font-variant-numeric: tabular-nums;
}

.page-products .dl-tree__node:first-child .dl-tree__dot {
  border-color: var(--accent);
  box-shadow: 4px 4px 0 rgba(200, 255, 60, 0.16);
}

.page-products .dl-tree__body h3 {
  font-size: 1.1rem;
  padding-top: 4px;
}

.page-products .dl-tree__body p {
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.9375rem;
  max-width: 42ch;
}

.page-products .dl-steps__fig {
  margin: 0;
}

.page-products .dl-steps__copy {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: clamp(24px, 3.4vw, 40px);
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.page-products .dl-steps__copy .note {
  max-width: 52ch;
  color: var(--muted);
  font-size: 0.875rem;
}

@media (min-width: 900px) {
  .page-products .dl-steps__wrap {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: start;
  }
}

/* ---------- 07 设备与浏览器 ---------- */

.page-products .dl-device__head {
  max-width: 58ch;
  margin-bottom: clamp(22px, 3.2vw, 38px);
}

.page-products .dl-device__head h2 {
  margin: 10px 0 14px;
}

.page-products .dl-device__head .prose {
  color: var(--muted);
}

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

.page-products .dl-device__item {
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--bg);
}

.page-products .dl-device__k {
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--accent-2);
  text-transform: uppercase;
}

.page-products .dl-device__item h3 {
  margin: 10px 0 8px;
}

.page-products .dl-device__item p {
  color: var(--muted);
  font-size: 0.9375rem;
}

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

@media (min-width: 1040px) {
  .page-products .dl-device__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 08 卡住时的下一步 ---------- */

.page-products .dl-help__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.2vw, 40px);
}

.page-products .dl-help__copy h2 {
  margin: 10px 0 14px;
}

.page-products .dl-help__copy .prose {
  max-width: 52ch;
  color: var(--muted);
}

.page-products .dl-help__links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

@media (min-width: 820px) {
  .page-products .dl-help__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }
}

/* ---------- 图片容器兜底 ---------- */

.page-products .media__img,
.page-products .media__frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (prefers-reduced-motion: reduce) {
  .page-products * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}