/* ===== 功能介绍页 · page-products ===== */
.page-products {
  --prod-red: var(--redorange-500);
  --prod-darkred: var(--darkred-600);
  --prod-purple: var(--graypurple-500);
  --prod-hair: rgba(244, 233, 215, .14);
  --prod-hair-ink: rgba(18, 24, 31, .12);
  color: var(--offwhite-050);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-products .prod-hero {
  position: relative;
  padding: 26px 0 48px;
  background:
    radial-gradient(115% 85% at 84% -14%, rgba(47, 227, 208, .16), transparent 62%),
    radial-gradient(75% 55% at 2% 0%, rgba(242, 178, 62, .12), transparent 58%);
}

.page-products .prod-hero__top {
  display: grid;
  gap: 26px;
  margin-top: 22px;
}

.page-products .prod-hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 8.4vw, 3.3rem);
  line-height: 1.08;
  letter-spacing: .02em;
  color: var(--offwhite-050);
  margin: 14px 0 0;
  max-width: 18em;
}

.page-products .prod-hero__lead {
  margin: 16px 0 0;
  max-width: 60ch;
  font-size: 1rem;
  line-height: 1.78;
  color: var(--grayblue-400);
}

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

.page-products .prod-live {
  border-radius: var(--radius-lg);
  padding: 22px 22px 24px;
  background: linear-gradient(155deg, rgba(47, 227, 208, .16), rgba(19, 38, 57, .55) 64%);
  border: 1px solid rgba(47, 227, 208, .28);
}

.page-products .prod-live__tag {
  margin: 0;
  font-size: .72rem;
  letter-spacing: .22em;
  color: var(--cyan-400);
}

.page-products .prod-live__num {
  margin: 10px 0 2px;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(3rem, 15vw, 4.4rem);
  line-height: 1;
  letter-spacing: .02em;
  color: var(--cyan-400);
}

.page-products .prod-live__unit {
  margin: 0;
  font-size: .95rem;
  color: var(--offwhite-050);
}

.page-products .prod-live__note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid rgba(47, 227, 208, .22);
  font-size: .84rem;
  line-height: 1.65;
  color: var(--grayblue-400);
}

/* 三块功能概览 */
.page-products .prod-split {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
}

.page-products .prod-split__item {
  padding: 20px 20px 22px;
  border-radius: var(--radius-md);
  background: var(--ink-700);
  border-top: 3px solid var(--ink-500);
}

.page-products .prod-split__item--red { border-top-color: var(--prod-red); }
.page-products .prod-split__item--red .prod-split__idx { color: var(--prod-red); }
.page-products .prod-split__item--darkred { border-top-color: var(--prod-darkred); }
.page-products .prod-split__item--darkred .prod-split__idx { color: var(--prod-darkred); }
.page-products .prod-split__item--purple { border-top-color: var(--prod-purple); }
.page-products .prod-split__item--purple .prod-split__idx { color: var(--prod-purple); }

.page-products .prod-split__idx {
  margin: 0;
  font-size: .76rem;
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--grayblue-400);
}

.page-products .prod-split__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.12rem;
  letter-spacing: .03em;
  line-height: 1.3;
  color: var(--offwhite-050);
}

.page-products .prod-split__text {
  margin: 10px 0 0;
  font-size: .9rem;
  line-height: 1.7;
  color: var(--grayblue-400);
}

/* 分区跳转 */
.page-products .prod-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid var(--prod-hair);
}

.page-products .prod-jump a {
  display: inline-block;
  padding: 7px 15px;
  border-radius: 999px;
  border: 1px solid var(--ink-500);
  color: var(--grayblue-400);
  font-size: .82rem;
  text-decoration: none;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-products .prod-jump a:hover,
.page-products .prod-jump a:focus-visible {
  color: var(--ink-900);
  background: var(--cyan-400);
  border-color: var(--cyan-400);
}

/* ---------- 通用区块标题 ---------- */
.page-products .prod-head {
  max-width: 860px;
}

.page-products .prod-head h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.55rem, 6vw, 2.25rem);
  line-height: 1.16;
  letter-spacing: .03em;
  color: var(--offwhite-050);
}

.page-products .prod-head__lead {
  margin: 14px 0 0;
  font-size: .97rem;
  line-height: 1.78;
  color: var(--grayblue-400);
}

/* ---------- 牌路参考 ---------- */
.page-products .prod-track__grid {
  display: grid;
  gap: 28px;
  margin-top: 30px;
}

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

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

.page-products .prod-dims li {
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr);
  gap: 0 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--prod-hair);
}

.page-products .prod-dims li:first-child { padding-top: 0; }
.page-products .prod-dims li:last-child { border-bottom: 0; padding-bottom: 0; }

.page-products .prod-dims__idx {
  padding-top: .3rem;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--prod-red);
}

.page-products .prod-dims h3 {
  margin: 0;
  font-size: 1.04rem;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--offwhite-050);
}

.page-products .prod-dims p {
  margin: 6px 0 0;
  font-size: .92rem;
  line-height: 1.72;
  color: var(--grayblue-400);
}

.page-products .prod-sync {
  margin-top: 34px;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  border-left: 3px solid var(--prod-red);
  background: rgba(226, 84, 44, .1);
}

.page-products .prod-sync p {
  margin: 0;
  font-size: .93rem;
  line-height: 1.75;
  color: var(--offwhite-050);
}

/* ---------- 核验记录 ---------- */
.page-products .prod-records__grid {
  display: grid;
  gap: 32px;
}

.page-products .prod-records__list {
  margin-top: 26px;
  border-top: 1px solid var(--prod-hair);
}

.page-products .prod-rec {
  border-bottom: 1px solid var(--prod-hair);
}

.page-products .prod-rec summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 2px;
  cursor: pointer;
  list-style: none;
  font-size: .98rem;
  font-weight: 500;
  color: var(--offwhite-050);
  transition: color var(--dur) var(--ease);
}

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

.page-products .prod-rec summary:hover,
.page-products .prod-rec summary:focus-visible { color: var(--darkred-600); }

.page-products .prod-rec__no {
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--darkred-600);
}

.page-products .prod-rec__name {
  min-width: 0;
}

.page-products .prod-rec summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  line-height: 1;
  color: var(--darkred-600);
}

.page-products .prod-rec[open] summary::after { content: "–"; }

.page-products .prod-rec__body {
  padding: 0 2px 16px 44px;
  font-size: .89rem;
  line-height: 1.72;
  color: var(--grayblue-400);
}

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

/* ---------- 返水对照（奶油浅底） ---------- */
.page-products .prod-fee {
  background: var(--cream-100);
  color: var(--inktext-900);
}

.page-products .prod-fee .prod-head h2 { color: var(--inktext-900); }
.page-products .prod-fee .prod-head__lead { color: #3d4652; }

.page-products .prod-fee__figure {
  margin: 28px 0 0;
  aspect-ratio: 3 / 2;
}

.page-products .prod-fee__tablewrap {
  margin-top: 28px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius-md);
  background: var(--cream-300);
}

.page-products .prod-fee__table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
  font-size: .92rem;
  color: var(--inktext-900);
}

.page-products .prod-fee__table th,
.page-products .prod-fee__table td {
  padding: 13px 16px;
  text-align: left;
  vertical-align: middle;
}

.page-products .prod-fee__table thead th {
  background: var(--graypurple-500);
  color: var(--cream-100);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .84rem;
  letter-spacing: .1em;
}

.page-products .prod-fee__table tbody td {
  border-bottom: 1px solid var(--prod-hair-ink);
}

.page-products .prod-fee__table tbody tr:nth-child(even) { background: rgba(223, 205, 176, .55); }

.page-products .prod-fee__table td:first-child {
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: .04em;
  white-space: nowrap;
}

.page-products .prod-fee__table td:last-child {
  position: relative;
  padding-right: 132px;
  white-space: nowrap;
}

.page-products .prod-fee__tip {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translate(8px, -50%);
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--amber-400);
  color: var(--inktext-900);
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .02em;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-products .prod-fee__note {
  margin: 22px 0 0;
  font-size: .92rem;
  line-height: 1.75;
  color: #3d4652;
  max-width: 68ch;
}

/* ---------- 限红速查 ---------- */
.page-products .prod-limits__grid {
  display: grid;
  gap: 30px;
  margin-top: 32px;
}

.page-products .prod-limits__figure {
  margin: 0;
  aspect-ratio: 3 / 2;
}

.page-products .prod-tables {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(148px, 1fr));
}

.page-products .prod-tables__item {
  padding: 16px 16px 18px;
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, rgba(47, 227, 208, .09), rgba(19, 38, 57, .92));
  border: 1px solid var(--ink-500);
}

.page-products .prod-tables__name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: .05em;
  color: var(--offwhite-050);
}

.page-products .prod-tables__range {
  margin: 9px 0 0;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: .94rem;
  letter-spacing: .04em;
  color: var(--cyan-400);
}

.page-products .prod-tables__time {
  margin: 6px 0 0;
  font-size: .8rem;
  line-height: 1.5;
  color: var(--grayblue-400);
}

/* ---------- 延迟标注 ---------- */
.page-products .prod-latency__grid {
  display: grid;
  gap: 32px;
}

.page-products .prod-latency__steps {
  list-style: none;
  counter-reset: lat;
  margin: 30px 0 0;
  padding: 0;
}

.page-products .prod-latency__steps li {
  position: relative;
  counter-increment: lat;
  margin-left: 15px;
  padding: 2px 0 24px 34px;
  border-left: 1px solid rgba(47, 227, 208, .26);
  font-size: .93rem;
  line-height: 1.72;
  color: var(--grayblue-400);
}

.page-products .prod-latency__steps li:last-child {
  border-left-color: transparent;
  padding-bottom: 0;
}

.page-products .prod-latency__steps li::before {
  content: counter(lat, decimal-leading-zero);
  position: absolute;
  left: -15px;
  top: 0;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--ink-900);
  border: 1px solid rgba(47, 227, 208, .5);
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 600;
  color: var(--cyan-400);
}

.page-products .prod-latency__figure {
  margin: 0;
  aspect-ratio: 4 / 5;
}

/* ---------- 版本演进 ---------- */
.page-products .prod-timeline {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
}

.page-products .prod-timeline li {
  display: grid;
  grid-template-columns: 4.4rem minmax(0, 1fr);
  gap: 16px;
  padding: 20px 0;
  border-top: 1px solid var(--prod-hair);
}

.page-products .prod-timeline li:last-child {
  border-bottom: 1px solid var(--prod-hair);
}

.page-products .prod-timeline__year {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1.1rem;
  letter-spacing: .04em;
  color: var(--amber-400);
}

.page-products .prod-timeline h3 {
  margin: 0;
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--offwhite-050);
}

.page-products .prod-timeline p {
  margin: 8px 0 0;
  font-size: .91rem;
  line-height: 1.72;
  color: var(--grayblue-400);
}

.page-products .prod-versions__note {
  margin: 28px 0 0;
  font-size: .88rem;
  line-height: 1.75;
  color: var(--grayblue-400);
}

.page-products .prod-versions__note a {
  color: var(--cyan-400);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 媒体框统一 ---------- */
.page-products .media-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 平板 ---------- */
@media (min-width: 760px) {
  .page-products .prod-records__list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 32px;
    border-top: 1px solid var(--prod-hair);
  }

  .page-products .prod-timeline li {
    grid-template-columns: 5.4rem minmax(0, 1fr);
    gap: 22px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-products .prod-hero {
    padding: 34px 0 60px;
  }

  .page-products .prod-hero__top {
    grid-template-columns: minmax(0, 1.62fr) minmax(0, .82fr);
    align-items: end;
    gap: 48px;
    margin-top: 28px;
  }

  .page-products .prod-split {
    margin-top: 44px;
  }

  .page-products .prod-track__grid {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
    gap: 46px;
    align-items: start;
    margin-top: 36px;
  }

  .page-products .prod-records__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, .78fr);
    gap: 48px;
    align-items: start;
  }

  .page-products .prod-limits__grid {
    grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
    gap: 44px;
    align-items: start;
    margin-top: 36px;
  }

  .page-products .prod-latency__grid {
    grid-template-columns: minmax(0, 1.22fr) minmax(0, .78fr);
    gap: 52px;
    align-items: start;
  }
}

/* ---------- 悬停增强 ---------- */
@media (hover: hover) {
  .page-products .prod-fee__table tbody tr {
    transition: background-color var(--dur) var(--ease);
  }

  .page-products .prod-fee__table tbody tr:hover {
    background: rgba(122, 107, 168, .24);
  }

  .page-products .prod-fee__table tbody tr:hover .prod-fee__tip {
    opacity: 1;
    transform: translate(0, -50%);
  }

  .page-products .prod-tables__item {
    transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
  }

  .page-products .prod-tables__item:hover {
    border-color: rgba(47, 227, 208, .55);
    transform: translateY(-2px);
  }

  .page-products .prod-split__item {
    transition: transform var(--dur) var(--ease);
  }

  .page-products .prod-split__item:hover {
    transform: scale(1.015);
  }
}

/* ---------- 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-products .prod-split__item,
  .page-products .prod-tables__item,
  .page-products .prod-fee__tip {
    transition: opacity .01ms linear;
  }

  .page-products .prod-tables__item:hover,
  .page-products .prod-split__item:hover {
    transform: none;
  }
}