/* ===== 产品与功能页 ===== */
.page-products {
  --pg-section: clamp(2.5rem, 5.5vw, 5.25rem);
  --pg-gap: clamp(1.25rem, 3vw, 2.5rem);
}

/* --- 顶部区 --- */
.page-products .prod-top {
  position: relative;
  overflow: hidden;
  padding: clamp(1.25rem, 3vw, 2.25rem) 0 clamp(1.75rem, 4vw, 3rem);
}

.page-products .prod-top::before {
  content: "";
  position: absolute;
  inset: -40% -12% auto -12%;
  height: 150%;
  background:
    radial-gradient(56% 58% at 16% 6%, rgba(47, 227, 208, 0.15), transparent 64%),
    radial-gradient(46% 52% at 86% 0%, rgba(91, 107, 255, 0.16), transparent 68%),
    radial-gradient(70% 60% at 50% 100%, rgba(245, 166, 35, 0.06), transparent 70%);
  pointer-events: none;
}

.page-products .prod-top > .container {
  position: relative;
  z-index: 1;
}

.page-products .prod-head {
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
  max-width: 62ch;
}

.page-products .prod-head .page-head__title {
  margin: 0.4rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 6vw, 3.6rem);
  line-height: 1.14;
  letter-spacing: 0.06em;
  color: var(--c-lamp);
}

.page-products .prod-head__lede {
  margin: 1.1rem 0 0;
  max-width: 54ch;
  font-size: clamp(1rem, 1.6vw, 1.125rem);
  line-height: 1.9;
  color: var(--c-haze);
}

/* --- 首屏数据条 --- */
.page-products .prod-stats {
  list-style: none;
  margin: clamp(1.75rem, 4vw, 2.75rem) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 3px;
  overflow: hidden;
}

.page-products .prod-stat {
  background: var(--c-indigo);
  padding: 1rem 1.1rem 1.15rem;
  display: grid;
  gap: 0.35rem;
  align-content: start;
}

.page-products .prod-stat__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.5rem, 3.6vw, 2.1rem);
  line-height: 1;
  letter-spacing: 0.01em;
  color: var(--c-cyan);
}

.page-products .prod-stat__unit {
  font-size: 0.5em;
  letter-spacing: 0.06em;
  margin-left: 0.25em;
  color: var(--c-cyan);
}

.page-products .prod-stat__label {
  font-size: 0.8125rem;
  line-height: 1.55;
  letter-spacing: 0.03em;
  color: var(--c-haze);
}

/* --- 小节索引 --- */
.page-products .prod-index {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(14, 26, 46, 0.6);
}

.page-products .prod-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.page-products .prod-index__link {
  display: block;
  padding: 0.85rem 0.9rem;
  font-size: 0.875rem;
  letter-spacing: 0.05em;
  color: var(--c-haze);
  text-decoration: none;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: color 0.16s var(--ease), background-color 0.16s var(--ease);
}

.page-products .prod-index__link:hover,
.page-products .prod-index__link:focus-visible {
  color: var(--c-cyan);
  background: var(--tint-cyan);
}

/* --- 通用小节 --- */
.page-products .prod-section {
  padding-block: var(--pg-section);
  border-top: 1px solid var(--line);
}

.page-products .prod-section__head {
  display: grid;
  gap: 0.4rem;
  margin-bottom: clamp(1.75rem, 4vw, 2.75rem);
  max-width: 62ch;
}

/* --- 功能对照 --- */
.page-products .prod-feature {
  display: grid;
  gap: clamp(1.5rem, 3.5vw, 2.75rem);
}

.page-products .prod-feature__figure {
  margin: 0;
}

.page-products .prod-feature__figure .figure__media {
  aspect-ratio: 3 / 2;
}

.page-products .figure__media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--c-stand);
}

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

.page-products .prod-feature__body {
  display: grid;
  align-content: start;
  gap: 1rem;
}

.page-products .prod-feature__body .prose {
  margin: 0;
  color: var(--c-lamp);
}

/* --- 功能清单 --- */
.page-products .prod-list {
  list-style: none;
  margin: 0.25rem 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .prod-list__item {
  background: var(--c-stand);
  padding: 0.9rem 1rem 1rem;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.3rem 0.9rem;
  align-items: baseline;
}

.page-products .prod-list__key {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.05rem;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--c-cyan);
  min-width: 2.1em;
}

.page-products .prod-list__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--c-lamp);
}

.page-products .prod-list__text {
  margin: 0.3rem 0 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--c-haze);
}

.page-products .prod-note {
  margin: 0.25rem 0 0;
  border-left: 1px solid var(--line-strong);
  padding-left: 0.85rem;
  font-size: 0.8125rem;
  line-height: 1.75;
  letter-spacing: 0.03em;
  color: var(--c-haze);
}

/* --- 推送区 --- */
.page-products .prod-push {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2rem);
}

.page-products .prod-push__figure {
  margin: 0;
}

.page-products .prod-push__figure .figure__media {
  aspect-ratio: 4 / 7;
  max-width: 320px;
}

.page-products .prod-push__intro {
  display: grid;
  align-content: start;
  gap: 1.1rem;
}

.page-products .prod-push__intro .prose {
  margin: 0;
  color: var(--c-lamp);
}

.page-products .prod-push__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.page-products .prod-push__fact {
  position: relative;
  padding-left: 1.1rem;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--c-haze);
}

.page-products .prod-push__fact::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-cyan);
  box-shadow: 0 0 8px rgba(47, 227, 208, 0.55);
}

.page-products .prod-push__fact .num {
  color: var(--c-cyan);
  font-weight: 600;
}

/* --- 时间轴 --- */
.page-products .prod-timeline {
  border: 1px solid var(--line);
  border-left: 2px solid rgba(47, 227, 208, 0.5);
  background: linear-gradient(160deg, rgba(14, 26, 46, 0.95), rgba(7, 13, 24, 0.95));
  padding: clamp(1.1rem, 2.6vw, 1.75rem);
}

.page-products .prod-timeline__head {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 1.1rem;
}

.page-products .prod-timeline__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.07em;
  color: var(--c-lamp);
}

.page-products .prod-timeline__hint {
  margin: 0;
  font-size: 0.8125rem;
  letter-spacing: 0.03em;
  color: var(--c-haze);
}

.page-products .prod-timeline__slots {
  list-style: none;
  margin: 0;
  padding: 0 0 0.35rem;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(72px, 1fr);
  gap: 0;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-products .prod-timeline__slot {
  position: relative;
  display: grid;
  justify-items: center;
  gap: 0.28rem;
  padding: 2.35rem 0.3rem 0.4rem;
  text-align: center;
}

.page-products .prod-timeline__slot::before {
  content: "";
  position: absolute;
  top: 1.25rem;
  left: 50%;
  right: -50%;
  height: 1px;
  background: rgba(47, 227, 208, 0.3);
}

.page-products .prod-timeline__slot:last-child::before {
  content: none;
}

.page-products .prod-timeline__dot {
  position: absolute;
  top: 1.25rem;
  left: 50%;
  width: 9px;
  height: 9px;
  margin: -4.5px 0 0 -4.5px;
  border-radius: 50%;
  background: var(--c-cyan);
  box-shadow: 0 0 10px rgba(47, 227, 208, 0.55);
  transition: box-shadow 0.18s var(--ease), transform 0.18s var(--ease);
}

.page-products .prod-timeline__slot:hover .prod-timeline__dot {
  transform: scale(1.25);
  box-shadow: 0 0 0 5px rgba(47, 227, 208, 0.16), 0 0 18px rgba(47, 227, 208, 0.75);
}

.page-products .prod-timeline__time {
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  color: var(--c-haze);
}

.page-products .prod-timeline__count {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.0625rem;
  font-weight: 600;
  line-height: 1;
  color: var(--c-lamp);
  transition: color 0.18s var(--ease);
}

.page-products .prod-timeline__slot:hover .prod-timeline__count {
  color: var(--c-cyan);
}

.page-products .prod-timeline__note {
  margin: 1rem 0 0;
  padding-top: 0.85rem;
  border-top: 1px dashed var(--line);
  font-size: 0.8125rem;
  line-height: 1.75;
  color: var(--c-haze);
}

/* --- 筛选开关 --- */
.page-products .prod-filters {
  border: 1px solid var(--line);
  background: var(--c-stand);
}

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

.page-products .prod-filters__row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 0.9rem;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.16s var(--ease);
}

.page-products .prod-filters__row:last-child {
  border-bottom: 0;
}

.page-products .prod-filters__row:hover {
  background: rgba(47, 227, 208, 0.05);
}

.page-products .prod-filters__switch {
  position: relative;
  width: 34px;
  height: 18px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: var(--c-night);
  transition: border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-products .prod-filters__switch::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--c-haze);
  transition: transform 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-products .prod-filters__switch.is-on {
  border-color: rgba(47, 227, 208, 0.6);
  background: var(--tint-cyan);
}

.page-products .prod-filters__switch.is-on::after {
  transform: translateX(16px);
  background: var(--c-cyan);
  box-shadow: var(--glow-cyan);
}

.page-products .prod-filters__row:hover .prod-filters__switch {
  border-color: rgba(47, 227, 208, 0.85);
}

.page-products .prod-filters__name {
  font-size: 0.875rem;
  letter-spacing: 0.04em;
  color: var(--c-lamp);
}

.page-products .prod-filters__value {
  font-size: 0.8125rem;
  letter-spacing: 0.03em;
  color: var(--c-haze);
  text-align: right;
}

.page-products .prod-filters__result {
  margin: 0;
  padding: 0.85rem 0.9rem;
  border-top: 1px solid var(--line);
  background: rgba(7, 13, 24, 0.55);
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--c-haze);
}

.page-products .prod-filters__result .num {
  color: var(--c-cyan);
  font-weight: 600;
  font-size: 1.0625rem;
}

/* --- 三端同步 --- */
.page-products .prod-sync__figure {
  margin: 0 auto;
  max-width: 1000px;
}

.page-products .prod-sync__figure .figure__media {
  aspect-ratio: 3 / 2;
}

.page-products .prod-sync__list {
  list-style: none;
  margin: clamp(1.5rem, 3vw, 2.25rem) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .prod-sync__item {
  background: var(--c-indigo);
  padding: 1.15rem 1.2rem 1.3rem;
}

.page-products .prod-sync__term {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-size: 0.9375rem;
  letter-spacing: 0.06em;
  color: var(--c-lamp);
}

.page-products .prod-sync__term::before {
  content: "";
  display: inline-block;
  width: 14px;
  height: 1px;
  margin-right: 0.55rem;
  vertical-align: middle;
  background: var(--c-cyan);
}

.page-products .prod-sync__desc {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.78;
  color: var(--c-haze);
}

.page-products .prod-sync__note {
  margin-top: 1.25rem;
}

/* --- 更新节奏 --- */
.page-products .prod-rhythm {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-products .prod-rhythm__row {
  display: grid;
  gap: 0.3rem;
  padding: 1.05rem 0;
  border-bottom: 1px solid var(--line);
}

.page-products .prod-rhythm__when {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.05rem;
  line-height: 1.3;
  letter-spacing: 0.03em;
  color: var(--c-amber);
}

.page-products .prod-rhythm__what {
  font-size: 0.9375rem;
  letter-spacing: 0.03em;
  color: var(--c-lamp);
}

.page-products .prod-rhythm__why {
  font-size: 0.875rem;
  line-height: 1.78;
  color: var(--c-haze);
}

.page-products .prod-rhythm + .prod-note {
  margin-top: 1.5rem;
}

/* --- 版本演进 --- */
.page-products .prod-section--versions {
  position: relative;
  overflow: hidden;
  background: var(--c-night);
}

.page-products .prod-versions__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.16;
  pointer-events: none;
}

.page-products .prod-versions__inner {
  position: relative;
  z-index: 1;
}

.page-products .prod-versions__lede {
  margin: 0 0 clamp(1.5rem, 3vw, 2.25rem);
  max-width: 56ch;
  color: var(--c-haze);
}

.page-products .prod-versions__list {
  display: grid;
  gap: 0.65rem;
}

.page-products .prod-version {
  border: 1px solid var(--line);
  background: rgba(22, 38, 63, 0.86);
  transition: border-color 0.2s var(--ease);
}

.page-products .prod-version:hover,
.page-products .prod-version:focus-within {
  border-color: var(--line-strong);
}

.page-products .prod-version--current {
  border-color: rgba(47, 227, 208, 0.45);
}

.page-products .prod-version__trigger {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.85rem;
  width: 100%;
  padding: 0.85rem 1rem;
  background: none;
  border: 0;
  font: inherit;
  font-size: 0.9375rem;
  color: inherit;
  text-align: left;
  cursor: pointer;
  transition: color 0.16s var(--ease);
}

.page-products .prod-version__trigger:hover {
  color: var(--c-cyan);
}

.page-products .prod-version__no {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.8125rem;
  line-height: 1;
  letter-spacing: 0.04em;
  padding: 0.3rem 0.5rem;
  border-radius: 2px;
  color: var(--c-amber);
  background: var(--tint-amber);
}

.page-products .prod-version--current .prod-version__no {
  background: var(--c-amber);
  color: var(--c-night);
  box-shadow: var(--glow-amber);
}

.page-products .prod-version__name {
  font-family: var(--font-display);
  letter-spacing: 0.04em;
  color: var(--c-lamp);
}

.page-products .prod-version__tag {
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--c-haze);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 0.15rem 0.45rem;
}

.page-products .prod-version__panel {
  padding: 0 1rem 1rem;
  border-top: 1px solid var(--line);
}

.page-products .prod-version__panel ul {
  list-style: none;
  margin: 0;
  padding: 0.85rem 0 0;
  display: grid;
  gap: 0.5rem;
}

.page-products .prod-version__panel li {
  position: relative;
  padding-left: 1.05rem;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--c-haze);
}

.page-products .prod-version__panel li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 6px;
  height: 1px;
  background: var(--c-cyan);
}

/* --- 四步上手 --- */
.page-products .prod-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .prod-steps__item {
  background: var(--c-indigo);
  padding: 1.25rem 1.1rem 1.15rem;
  display: grid;
  align-content: start;
  gap: 0.45rem;
}

.page-products .prod-steps__no {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.5rem;
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--c-cyan);
}

.page-products .prod-steps__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.04em;
  color: var(--c-lamp);
}

.page-products .prod-steps__text {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--c-haze);
}

.page-products .prod-steps__outcome {
  margin: 0.15rem 0 0;
  padding-left: 0.6rem;
  border-left: 1px solid rgba(47, 227, 208, 0.45);
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--c-cyan);
}

.page-products .prod-steps__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  width: 100%;
  margin-top: 0.45rem;
  padding: 0.6rem 0 0;
  background: none;
  border: 0;
  border-top: 1px dashed var(--line);
  font: inherit;
  font-size: 0.8125rem;
  letter-spacing: 0.03em;
  text-align: left;
  color: var(--c-haze);
  cursor: pointer;
  transition: color 0.16s var(--ease);
}

.page-products .prod-steps__trigger::after {
  content: "＋";
  flex: none;
  color: var(--c-cyan);
}

.page-products .prod-steps__trigger[aria-expanded="true"]::after {
  content: "－";
}

.page-products .prod-steps__trigger:hover,
.page-products .prod-steps__trigger:focus-visible {
  color: var(--c-cyan);
}

.page-products .prod-steps__panel {
  padding-top: 0.55rem;
}

.page-products .prod-steps__panel p {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.78;
  color: var(--c-haze);
}

/* --- 收尾 --- */
.page-products .prod-tail {
  margin-top: clamp(1.75rem, 3.5vw, 2.5rem);
  padding: clamp(1.1rem, 2.5vw, 1.6rem);
  border: 1px solid var(--line);
  border-left: 2px solid var(--c-amber);
  background: linear-gradient(100deg, rgba(245, 166, 35, 0.07), rgba(14, 26, 46, 0.85) 58%);
  display: grid;
  gap: 1rem;
}

.page-products .prod-tail__text {
  margin: 0;
  max-width: 60ch;
  font-family: var(--font-serif);
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  line-height: 1.85;
  letter-spacing: 0.02em;
  color: var(--c-lamp);
}

.page-products .prod-tail__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

/* --- 折叠面板进场 --- */
.page-products .prod-version__panel:not([hidden]),
.page-products .prod-steps__panel:not([hidden]) {
  animation: prod-panel-in 0.2s var(--ease);
}

@keyframes prod-panel-in {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

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

@media (min-width: 760px) {
  .page-products .prod-index__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .prod-index__link {
    border-bottom: 0;
  }

  .page-products .prod-rhythm__row {
    grid-template-columns: 9.5rem minmax(0, 1fr) minmax(0, 1.35fr);
    gap: 0.25rem 1.5rem;
    align-items: baseline;
  }

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

@media (min-width: 900px) {
  .page-products .prod-push {
    grid-template-columns: minmax(220px, 300px) minmax(0, 1fr);
    grid-template-areas:
      "figure intro"
      "figure timeline";
    align-items: start;
    column-gap: clamp(1.5rem, 3vw, 2.5rem);
  }

  .page-products .prod-push__figure {
    grid-area: figure;
  }

  .page-products .prod-push__intro {
    grid-area: intro;
  }

  .page-products .prod-timeline {
    grid-area: timeline;
  }

  .page-products .prod-push__figure .figure__media {
    max-width: none;
  }
}

@media (min-width: 980px) {
  .page-products .prod-feature {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-products .prod-feature--flip {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr);
  }
}

@media (min-width: 1100px) {
  .page-products .prod-index__list {
    grid-template-columns: repeat(7, minmax(0, 1fr));
  }

  .page-products .prod-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products * {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}
</final>