.page-products {
  --prod-chamfer: 26px;
  --prod-rule: 1px solid var(--paper-200);
  background: var(--paper-100);
  color: var(--ink-900);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-products .container {
  width: min(100% - 36px, var(--content-max));
  margin-inline: auto;
}

.page-products .prod-top {
  padding-top: 22px;
}

.page-products .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gray-500);
}

.page-products .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--paper-400);
}

.page-products .breadcrumb a {
  color: var(--gray-500);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-products .breadcrumb a:hover {
  color: var(--ink-900);
  border-bottom-color: var(--cyan-400);
}

/* ---------- 首屏 ---------- */
.page-products .prod-hero {
  padding: 26px 0 34px;
}

.page-products .prod-hero__grid {
  display: grid;
  gap: 30px;
  align-items: start;
}

.page-products .prod-eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-700);
}

.page-products .prod-hero__title {
  margin: 12px 0 18px;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(46px, 14vw, 104px);
  line-height: 0.9;
  letter-spacing: 0.01em;
  color: var(--ink-900);
}

.page-products .prod-hero__title span {
  color: var(--ink-700);
  background-image: linear-gradient(transparent 78%, var(--cyan-400) 78%, var(--cyan-400) 88%, transparent 88%);
}

.page-products .prod-hero__lead-text {
  margin: 0 0 24px;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--gray-500);
}

.page-products .prod-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-products .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-decoration: none;
  border: 1px solid transparent;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
  transition: background-color 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-products .btn--primary {
  background: var(--cyan-400);
  color: var(--ink-900);
}

.page-products .btn--primary:hover {
  background: var(--cyan-200);
}

.page-products .btn--outline {
  background: transparent;
  color: var(--ink-900);
  border-color: var(--paper-400);
}

.page-products .btn--outline:hover {
  border-color: var(--ink-900);
  background: var(--paper-200);
}

.page-products .btn--ghost {
  background: transparent;
  color: var(--white);
  border-color: var(--line-soft);
}

.page-products .btn--ghost:hover {
  background: var(--ink-700);
  border-color: var(--cyan-400);
}

/* ---------- 模块索引 ---------- */
.page-products .prod-index {
  position: relative;
  padding: 22px 20px 24px;
  background: var(--ink-900);
  color: var(--white);
  clip-path: polygon(0 0, calc(100% - var(--prod-chamfer)) 0, 100% var(--prod-chamfer), 100% 100%, 0 100%);
}

.page-products .prod-index::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(115deg, rgba(46, 230, 197, 0.07) 0 1px, transparent 1px 14px);
}

.page-products .prod-index__cap {
  position: relative;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cyan-400);
}

.page-products .prod-index__list {
  position: relative;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-products .prod-index__list li + li {
  border-top: 1px solid var(--line-dark);
}

.page-products .prod-index__list a {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 2px 12px;
  padding: 13px 0;
  text-decoration: none;
  color: var(--white);
}

.page-products .prod-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan-400);
  padding-top: 5px;
}

.page-products .prod-index__label {
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 500;
  letter-spacing: 0.03em;
  transition: color 0.25s var(--ease);
}

.page-products .prod-index__meta {
  grid-column: 2;
  font-size: 13px;
  line-height: 1.55;
  color: var(--paper-400);
}

.page-products .prod-index__list a:hover .prod-index__label {
  color: var(--cyan-400);
}

/* ---------- 指标条 ---------- */
.page-products .prod-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-soft);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}

.page-products .prod-metric {
  background: var(--ink-900);
  padding: 20px 16px 22px;
}

.page-products .prod-metric__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(30px, 8vw, 42px);
  font-weight: 500;
  line-height: 1;
  color: var(--amber-400);
}

.page-products .prod-metric__unit {
  font-size: 0.5em;
  margin-left: 2px;
  color: var(--cyan-400);
}

.page-products .prod-metric__label {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.5;
  color: var(--paper-400);
}

/* ---------- 通用区块 ---------- */
.page-products .prod-block {
  padding: 46px 0;
  border-top: var(--prod-rule);
}

.page-products .prod-block__grid {
  display: grid;
  gap: 28px;
  align-items: start;
}

.page-products .prod-block__tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray-500);
}

.page-products .prod-block__tag--cyan {
  color: var(--cyan-400);
}

.page-products .prod-block__title {
  margin: 10px 0 16px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(28px, 7vw, 46px);
  line-height: 1.04;
  letter-spacing: 0.01em;
}

.page-products .prod-block__body {
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--gray-500);
}

.page-products .prod-block__note {
  margin: 20px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--amber-400);
  font-size: 13px;
  line-height: 1.75;
  color: var(--gray-500);
}

.page-products .prod-block__head {
  max-width: 62ch;
  margin-bottom: 28px;
}

.page-products .media-frame {
  margin: 0;
  overflow: hidden;
  background: var(--ink-800);
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 0 100%);
}

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

.page-products .media-frame--tall img {
  aspect-ratio: 4 / 3;
}

.page-products .prod-media-band {
  margin-bottom: 28px;
}

/* ---------- 深色区块 ---------- */
.page-products .prod-block--dark {
  background: var(--ink-900);
  color: var(--white);
  border-top-color: var(--ink-700);
}

.page-products .prod-block--dark .prod-block__title {
  color: var(--white);
}

.page-products .prod-block--dark .prod-block__body {
  color: var(--paper-200);
}

.page-products .prod-block--paper {
  background: var(--paper-200);
}

/* ---------- 两步步骤 ---------- */
.page-products .prod-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-products .prod-step {
  position: relative;
  padding: 16px 16px 16px 18px;
  border-left: 2px solid var(--cyan-400);
  background: rgba(46, 230, 197, 0.06);
}

.page-products .prod-block--dark .prod-step {
  background: var(--ink-800);
  border-left-color: var(--amber-400);
}

.page-products .prod-step__idx {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--ink-700);
}

.page-products .prod-block--dark .prod-step__idx {
  color: var(--cyan-400);
}

.page-products .prod-step__title {
  margin: 6px 0 6px;
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.page-products .prod-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray-500);
}

.page-products .prod-block--dark .prod-step p {
  color: var(--paper-200);
}

.page-products .prod-steps--compact .prod-step {
  padding: 13px 14px 13px 16px;
}

/* ---------- V4UED 卡片 ---------- */
.page-products .prod-v4cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 26px;
}

.page-products .prod-v4card {
  padding: 16px 14px 18px;
  background: var(--ink-800);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
}

.page-products .prod-v4card:nth-child(3) {
  grid-column: 1 / -1;
  background: linear-gradient(100deg, var(--ink-700) 0%, var(--ink-800) 62%);
}

.page-products .prod-v4card__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(26px, 7vw, 34px);
  font-weight: 500;
  line-height: 1;
  color: var(--amber-400);
}

.page-products .prod-v4card__unit {
  font-size: 0.46em;
  margin-left: 3px;
  color: var(--cyan-400);
}

.page-products .prod-v4card__label {
  margin: 10px 0 0;
  font-size: 12px;
  line-height: 1.55;
  letter-spacing: 0.02em;
  color: var(--paper-400);
}

/* ---------- 统计筛选 ---------- */
.page-products .prod-filter {
  padding-top: 4px;
}

.page-products .prod-filter__label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--paper-400);
}

.page-products .prod-filter__input {
  width: 100%;
  max-width: 320px;
  padding: 10px 14px;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--white);
  background: var(--ink-800);
  border: 1px solid var(--line-soft);
  border-radius: 0;
  outline: none;
  transition: border-color 0.25s var(--ease);
}

.page-products .prod-filter__input::placeholder {
  color: var(--gray-500);
}

.page-products .prod-filter__input:focus {
  border-color: var(--cyan-400);
}

.page-products .prod-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-products .prod-stats__item {
  padding: 6px 11px 7px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--cyan-200);
  background: rgba(46, 230, 197, 0.08);
  border-bottom: 1px solid var(--line-soft);
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 0 100%);
}

.page-products .prod-filter__empty {
  margin: 14px 0 0;
  font-size: 13px;
  color: var(--paper-400);
}

/* ---------- 订阅三列 ---------- */
.page-products .prod-browse {
  display: grid;
  gap: 12px;
  margin-bottom: 24px;
}

.page-products .prod-browse__col {
  padding: 20px 18px 22px;
  background: var(--paper-200);
  border-top: 3px solid var(--ink-900);
}

.page-products .prod-browse__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--ink-700);
}

.page-products .prod-browse__title {
  margin: 8px 0 8px;
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.page-products .prod-browse__col p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--gray-500);
}

.page-products .prod-cadence {
  display: grid;
  gap: 1px;
  background: var(--paper-200);
  margin-bottom: 28px;
}

.page-products .prod-cadence__item {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 14px 14px;
  background: var(--paper-100);
}

.page-products .prod-cadence__k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--amber-400);
}

.page-products .prod-cadence__v {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray-500);
}

/* ---------- 适用场景 ---------- */
.page-products .prod-scenes {
  display: grid;
  gap: 14px;
}

.page-products .prod-scene {
  padding: 22px 18px 20px;
  background: var(--paper-100);
  border: 1px solid var(--paper-400);
  border-top: 3px solid var(--ink-700);
  transition: transform 0.3s var(--ease), border-top-color 0.3s var(--ease);
}

.page-products .prod-scene:hover {
  transform: translateY(-3px);
  border-top-color: var(--cyan-400);
}

.page-products .prod-scene__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: 0.02em;
}

.page-products .prod-scene p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--gray-500);
}

.page-products .prod-scene__meta {
  margin-top: 14px !important;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ink-700) !important;
}

/* ---------- 版本时间线 ---------- */
.page-products .prod-timeline {
  position: relative;
  margin: 0;
  padding: 0 0 0 20px;
  list-style: none;
}

.page-products .prod-timeline::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan-400) 0%, var(--paper-400) 100%);
  transform: skewX(-4deg);
  transform-origin: top center;
}

.page-products .prod-timeline__item {
  position: relative;
}

.page-products .prod-timeline__item + .prod-timeline__item {
  border-top: 1px dashed var(--paper-400);
}

.page-products .prod-stage__sum {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
  align-items: baseline;
  padding: 15px 0;
  list-style: none;
  cursor: pointer;
}

.page-products .prod-stage__sum::-webkit-details-marker {
  display: none;
}

.page-products .prod-stage__sum::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--ink-700);
}

.page-products .prod-stage[open] .prod-stage__sum::after {
  content: "–";
  color: var(--cyan-400);
}

.page-products .prod-stage__ver {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink-700);
  min-width: 82px;
}

.page-products .prod-stage__name {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ink-900);
}

.page-products .prod-stage__body {
  margin: 0 0 16px;
  padding-left: 2px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--gray-500);
  max-width: 64ch;
}

/* ---------- 开始使用 CTA ---------- */
.page-products .prod-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

/* ---------- 尾部 ---------- */
.page-products .prod-block--tail {
  border-top: var(--prod-rule);
}

.page-products .prod-tail {
  display: grid;
  gap: 20px;
  align-items: center;
}

.page-products .prod-tail__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(24px, 5.5vw, 34px);
  font-weight: 400;
  letter-spacing: 0.02em;
}

.page-products .prod-tail__text {
  margin: 0;
  max-width: 52ch;
  font-size: 14px;
  line-height: 1.78;
  color: var(--gray-500);
}

.page-products .prod-tail__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
}

.page-products .prod-tail__link {
  font-family: var(--font-body);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--ink-900);
  text-decoration: none;
  border-bottom: 1px solid var(--paper-400);
  padding-bottom: 3px;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-products .prod-tail__link:hover {
  color: var(--ink-700);
  border-bottom-color: var(--cyan-400);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-products .prod-metrics {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .prod-steps--compact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .prod-scenes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .prod-v4cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-products .prod-v4card:nth-child(3) {
    grid-column: auto;
  }

  .page-products .prod-tail {
    grid-template-columns: minmax(0, 1fr) auto;
  }
}

@media (min-width: 820px) {
  .page-products .prod-browse {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-products .prod-cadence__item {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
    padding: 18px 16px;
  }

  .page-products .prod-timeline {
    padding-left: 28px;
  }
}

@media (min-width: 980px) {
  .page-products .prod-top {
    padding-top: 30px;
  }

  .page-products .prod-hero {
    padding: 40px 0 48px;
  }

  .page-products .prod-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 56px;
    align-items: end;
  }

  .page-products .prod-hero__lead-text {
    font-size: 17px;
  }

  .page-products .prod-block {
    padding: 74px 0;
  }

  .page-products .prod-block__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 56px;
    align-items: center;
  }

  .page-products .prod-block__grid--flip {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-products .prod-block__grid--flip .prod-block__media {
    order: -1;
  }

  .page-products .prod-hero__title {
    font-size: clamp(72px, 8.4vw, 104px);
  }

  .page-products .prod-block__head {
    margin-bottom: 38px;
  }

  .page-products .prod-scenes {
    gap: 18px;
  }

  .page-products .prod-scene {
    padding: 28px 24px 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .prod-scene,
  .page-products .btn,
  .page-products .prod-tail__link {
    transition: none;
  }

  .page-products .prod-scene:hover {
    transform: none;
  }
}