.page-products {
  --red-a22: rgba(251, 9, 11, .22);
  --red-a45: rgba(251, 9, 11, .45);
  --red-a70: rgba(251, 9, 11, .70);
  --fluor-a18: rgba(199, 244, 100, .18);
  background: var(--black);
  color: var(--bone);
  font-family: var(--font-sans);
  line-height: 1.75;
  overflow-x: hidden;
  padding-bottom: 96px;
}

/* ---------- 面包屑 ---------- */
.page-products__crumb {
  padding: 96px 0 0;
}
.page-products .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist);
}
.page-products .breadcrumb a {
  color: var(--mist);
  text-decoration: none;
  transition: color .14s var(--ease);
}
.page-products .breadcrumb a:hover,
.page-products .breadcrumb a:focus-visible {
  color: var(--fluoro);
  outline: none;
}

/* ---------- 首屏 ---------- */
.prod-hero {
  padding: 40px 0 88px;
}
.prod-hero__inner {
  display: grid;
  gap: 24px;
}
.prod-hero__side {
  display: none;
}
.prod-hero__body {
  max-width: 820px;
}
.prod-hero__body > .annotation {
  color: var(--fluoro);
  margin: 0 0 18px;
}
.prod-hero__title {
  margin: 0 0 22px;
  font-size: clamp(40px, 9vw, 92px);
  line-height: 1.02;
  font-weight: 900;
  letter-spacing: -.02em;
  color: var(--bone);
}
.prod-hero__lede {
  margin: 0 0 30px;
  max-width: 38ch;
  font-size: 16px;
  color: var(--mist);
}
.prod-hero__acts {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}
.prod-hero__acts .brand__version {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: .04em;
}

/* ---------- 章节骨架 ---------- */
.page-products .chapter {
  padding: 64px 0;
  border-top: 1px solid var(--line);
}
.page-products .chapter__head {
  margin-bottom: 36px;
}
.page-products .chapter__num {
  display: block;
  color: var(--mist);
  margin-bottom: 12px;
  transition: color .2s var(--ease);
}
.page-products .chapter.is-active .chapter__num {
  color: var(--fluoro);
}
.page-products .chapter__title {
  margin: 0 0 10px;
  font-size: clamp(28px, 4.4vw, 52px);
  line-height: 1.1;
  font-weight: 900;
  letter-spacing: -.015em;
}
.page-products .chapter__lede {
  margin: 0;
  max-width: 40ch;
  color: var(--mist);
  font-size: 15px;
}

/* ---------- 01 四条产品线 ---------- */
.prod-lines__body {
  display: grid;
  gap: 28px;
}
.prod-lines__hero {
  margin: 0;
}
.page-products .media__frame {
  overflow: hidden;
  border-radius: 4px;
  background: var(--carbon);
}
.page-products .media__frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.page-products .media__caption {
  margin-top: 12px;
  font-size: 12px;
  color: var(--mist);
  letter-spacing: .04em;
}
.media--custom-14 .media__frame { aspect-ratio: 14 / 10; }
.media--custom-2  .media__frame { aspect-ratio: 2 / 1; }
.media--custom-32 .media__frame { aspect-ratio: 3 / 2; }

.prod-deck {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}
.prod-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 26px 20px 22px 24px;
  background: var(--carbon);
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--bone);
  text-decoration: none;
  transition: background .14s var(--ease), color .14s var(--ease), border-color .14s var(--ease);
}
.prod-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--red);
  opacity: .40;
  border-radius: 4px 0 0 4px;
  transition: opacity .14s var(--ease);
}
.prod-card:nth-child(2)::before { opacity: .60; }
.prod-card:nth-child(3)::before { opacity: .80; }
.prod-card:nth-child(4)::before { opacity: 1; }
.prod-card__idx {
  color: var(--mist);
  transition: color .14s var(--ease);
}
.prod-card__name {
  margin: 0;
  font-size: 22px;
  font-weight: 900;
  letter-spacing: -.01em;
  line-height: 1.25;
}
.prod-card__text {
  margin: 0;
  font-size: 15px;
  color: var(--mist);
  flex: 1;
  transition: color .14s var(--ease);
}
.prod-card__foot {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--red);
  transition: color .14s var(--ease);
}
.prod-card:hover,
.prod-card:focus-visible {
  background: var(--bone);
  color: var(--black);
  border-color: var(--bone);
  outline: none;
}
.prod-card:hover .prod-card__idx,
.prod-card:focus-visible .prod-card__idx { color: var(--red); }
.prod-card:hover .prod-card__text,
.prod-card:focus-visible .prod-card__text { color: #3A3A3A; }
.prod-card:hover .prod-card__foot,
.prod-card:focus-visible .prod-card__foot { color: var(--red-deep); }

/* ---------- 02 视图对比 ---------- */
.prod-views__body {
  display: grid;
  gap: 28px;
}
.prod-split {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
}
.prod-split::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 2px;
  background: var(--fluoro);
  z-index: 3;
  pointer-events: none;
}
.prod-split__rail,
.prod-split__body {
  padding: 30px 22px;
}
.prod-split__rail {
  background: var(--red-deep);
}
.prod-split__body {
  background: var(--graphite);
}
.prod-split__title {
  margin: 14px 0 10px;
  font-size: 22px;
  font-weight: 900;
  line-height: 1.25;
  color: var(--bone);
}
.prod-split__text {
  margin: 0 0 16px;
  font-size: 15px;
  color: var(--bone);
  opacity: .88;
}
.prod-split__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}
.prod-split__list li {
  position: relative;
  padding-left: 16px;
  font-size: 13px;
  letter-spacing: .02em;
}
.prod-split__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .7em;
  width: 7px;
  height: 1px;
  background: var(--fluoro);
}
.prod-views__fig,
.prod-version__fig,
.prod-terminal__fig,
.prod-entry__fig {
  margin: 0;
}

/* ---------- 03 场景 ---------- */
.scene-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.scene {
  padding: 24px 20px;
  background: var(--carbon);
  border: 1px solid var(--line);
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.scene__title {
  margin: 0;
  font-size: 20px;
  font-weight: 900;
  line-height: 1.3;
}
.scene__text {
  margin: 0;
  font-size: 15px;
  color: var(--mist);
  flex: 1;
}
.scene__pick {
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--fluoro);
}

/* ---------- 04 版本号 ---------- */
.prod-version__body {
  display: grid;
  gap: 26px;
}
.ver-strip {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}
.ver-seg {
  padding: 22px 20px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--carbon);
}
.ver-seg__label {
  display: block;
  color: var(--mist);
  margin-bottom: 10px;
}
.ver-seg__num {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(56px, 12vw, 96px);
  font-weight: 700;
  line-height: 1;
  margin-bottom: 14px;
}
.ver-seg--major .ver-seg__num { color: var(--red); }
.ver-seg--minor .ver-seg__num { color: var(--bone); }
.ver-seg--patch .ver-seg__num { color: var(--fluoro); }
.ver-seg__note {
  margin: 0;
  font-size: 14px;
  color: var(--mist);
}

.ver-full {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 16px;
  padding: 20px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--fluoro);
  border-radius: 4px;
  background: var(--carbon);
}
.ver-full > .annotation {
  color: var(--mist);
}
.ver-full__btn {
  font-family: var(--font-mono);
  font-size: 20px;
  letter-spacing: .04em;
}
.ver-full__hint {
  margin: 0;
  flex: 1 1 220px;
  font-size: 13px;
  color: var(--mist);
}
.ver-more {
  margin: 0;
  font-size: 14px;
  color: var(--mist);
}
.ver-more a {
  color: var(--bone);
  text-decoration: none;
  border-bottom: 1px solid var(--red);
  padding-bottom: 2px;
  transition: color .14s var(--ease), border-color .14s var(--ease);
}
.ver-more a:hover,
.ver-more a:focus-visible {
  color: var(--fluoro);
  border-color: var(--fluoro);
  outline: none;
}

/* ---------- 05 终端适配 ---------- */
.prod-terminal__body {
  display: grid;
  gap: 24px;
}
.term-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.term-matrix {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 14px;
}
.term-matrix__cap {
  text-align: left;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--mist);
  padding: 0 0 12px;
}
.term-matrix th,
.term-matrix td {
  padding: 14px 12px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.term-matrix thead th {
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mist);
  border-bottom: 1px solid var(--red);
  font-weight: 600;
}
.term-matrix tbody th {
  font-weight: 700;
  color: var(--bone);
  white-space: nowrap;
}
.term-matrix tbody td {
  color: var(--mist);
}
.term-matrix tbody tr:hover th,
.term-matrix tbody tr:hover td {
  background: var(--fluor-a18);
  color: var(--bone);
}
.term-note {
  margin: 0;
  font-size: 14px;
  color: var(--mist);
  padding-left: 16px;
  border-left: 2px solid var(--red);
}

/* ---------- 06 进入指引 ---------- */
.prod-entry__body {
  display: grid;
  gap: 28px;
}
.entry-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.entry-step {
  padding: 22px 20px;
  background: var(--carbon);
  border: 1px solid var(--line);
  border-radius: 4px;
  display: grid;
  gap: 10px;
}
.entry-step__num {
  color: var(--fluoro);
}
.entry-step__title {
  margin: 0;
  font-size: 20px;
  font-weight: 900;
}
.entry-step__text {
  margin: 0;
  font-size: 15px;
  color: var(--mist);
}
.entry-step__text a {
  color: var(--bone);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color .14s var(--ease), border-color .14s var(--ease);
}
.entry-step__text a:hover,
.entry-step__text a:focus-visible {
  color: var(--fluoro);
  border-color: var(--fluoro);
  outline: none;
}

.entry-links {
  padding: 22px 20px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--graphite);
}
.entry-links__lead {
  margin: 0 0 14px;
  font-size: 14px;
  color: var(--mist);
}
.entry-links__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}
.entry-links__list a {
  display: block;
  padding: 10px 0;
  color: var(--bone);
  text-decoration: none;
  font-size: 15px;
  border-bottom: 1px solid var(--line);
  transition: color .14s var(--ease), padding-left .14s var(--ease);
}
.entry-links__list li:last-child a {
  border-bottom: none;
}
.entry-links__list a:hover,
.entry-links__list a:focus-visible {
  color: var(--fluoro);
  padding-left: 8px;
  outline: none;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .prod-deck { grid-template-columns: repeat(2, 1fr); }
  .scene-grid { grid-template-columns: repeat(2, 1fr); }
  .ver-strip { grid-template-columns: repeat(3, 1fr); }
  .prod-hero__body > .annotation { letter-spacing: .24em; }
  .entry-steps { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1000px) {
  .page-products { padding-bottom: 140px; }
  .page-products__crumb { padding-top: 120px; }

  .prod-hero { padding: 56px 0 120px; }
  .prod-hero__inner {
    grid-template-columns: 96px 1fr;
    gap: 32px;
    align-items: start;
  }
  .prod-hero__side {
    display: block;
    height: 100%;
  }
  .prod-hero__side .annotation--v {
    writing-mode: vertical-rl;
    letter-spacing: .28em;
    color: var(--mist);
  }

  .page-products .chapter { padding: 96px 0; }
  .page-products .chapter__head { margin-bottom: 48px; }

  .prod-lines__body,
  .prod-views__body,
  .prod-version__body,
  .prod-terminal__body,
  .prod-entry__body {
    display: grid;
    grid-template-columns: 4fr 8fr;
    gap: 32px;
    align-items: start;
  }
  .prod-lines__hero,
  .prod-views__fig,
  .prod-version__fig,
  .prod-terminal__fig,
  .prod-entry__fig {
    grid-column: 1 / 2;
    position: sticky;
    top: calc(var(--header-h, 64px) + 24px);
  }
  .prod-deck,
  .split.prod-split,
  .ver-strip,
  .term-wrap,
  .entry-steps,
  .ver-full,
  .ver-more,
  .term-note,
  .entry-links {
    grid-column: 2 / 3;
  }
  .prod-deck { grid-template-columns: repeat(2, 1fr); gap: 14px; }

  .prod-split { grid-column: 2 / 3; }
  .prod-split::after { left: 38%; }
  .split.prod-split {
    display: grid;
    grid-template-columns: 38fr 62fr;
  }
  .prod-split__rail,
  .prod-split__body { padding: 36px 28px; }

  .scene-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
  }

  .entry-steps { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1320px) {
  .page-products .chapter { padding: 120px 0; }
  .prod-deck { gap: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  .prod-card,
  .prod-card__idx,
  .prod-card__text,
  .prod-card__foot,
  .page-products .chapter__num,
  .entry-links__list a,
  .ver-more a {
    transition: none;
  }
}