.page-products {
  --pr-grid: rgba(147, 169, 158, 0.10);
  --pr-hair: rgba(147, 169, 158, 0.22);
  --pr-hair-2: rgba(147, 169, 158, 0.42);
  background: var(--by-ink);
  color: var(--by-paper);
  font-family: var(--by-font-sans);
  line-height: 1.8;
  overflow-x: hidden;
}

.page-products .by-crumbs {
  padding-block: 18px 0;
}

/* ---------- 首屏 ---------- */
.page-products .pr-hero {
  position: relative;
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  padding-block: clamp(22px, 3.5vw, 44px) clamp(46px, 6vw, 92px);
}

.page-products .pr-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--pr-grid) 1px, transparent 1px),
    linear-gradient(to bottom, var(--pr-grid) 1px, transparent 1px);
  background-size: 88px 88px;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(to bottom, #000, transparent 82%);
  mask-image: linear-gradient(to bottom, #000, transparent 82%);
}

.page-products .pr-hero__main,
.page-products .pr-hero__preview {
  position: relative;
  z-index: 1;
  min-width: 0;
}

.page-products .pr-hero__title {
  margin: 16px 0 0;
  font-size: clamp(38px, 7.4vw, 86px);
  line-height: 1.03;
  letter-spacing: -0.02em;
  font-weight: 900;
}

.page-products .pr-hero__title em {
  font-style: normal;
  color: var(--by-lime);
  box-shadow: inset 0 -0.14em 0 rgba(199, 255, 63, 0.24);
}

.page-products .pr-hero__lead {
  max-width: 60ch;
  margin: 22px 0 0;
  color: var(--by-pale);
  font-size: clamp(16px, 1.7vw, 19px);
  line-height: 1.85;
}

.page-products .pr-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-products .pr-hero__preview {
  border: 1px solid var(--pr-hair-2);
  background: linear-gradient(160deg, rgba(11, 44, 34, 0.96), rgba(6, 30, 23, 0.66));
  padding: 20px 20px 12px;
}

.page-products .pr-hero__preview::before {
  content: "";
  display: block;
  width: 54px;
  height: 2px;
  margin-bottom: 12px;
  background: var(--by-lime);
}

.page-products .pr-hero__previewtitle {
  margin: 0;
  font-family: var(--by-font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--by-mist);
}

.page-products .pr-index {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
}

.page-products .pr-index li + li {
  border-top: 1px solid var(--pr-hair);
}

.page-products .pr-index a {
  display: grid;
  grid-template-columns: 40px 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 11px 0;
  color: var(--by-pale);
  font-size: 15px;
  transition: color 0.2s var(--by-ease);
}

.page-products .pr-index a .by-data {
  color: var(--by-lime);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.page-products .pr-index a::after {
  content: "→";
  color: var(--by-mist);
  transition: transform 0.2s var(--by-ease);
}

.page-products .pr-index a:hover,
.page-products .pr-index a:focus-visible {
  color: var(--by-lime);
}

.page-products .pr-index a:hover::after,
.page-products .pr-index a:focus-visible::after {
  transform: translateX(3px);
}

/* ---------- 章节骨架 ---------- */
.page-products .pr-chapter {
  padding-block: clamp(44px, 6vw, 88px);
}

.page-products .pr-chapter + .pr-chapter {
  border-top: 1px solid var(--pr-hair);
}

.page-products .by-band__index {
  color: var(--by-lime);
}

.page-products .by-band__title {
  max-width: 22ch;
}

/* ---------- 01 三层工作台 ---------- */
.page-products .pr-layers {
  display: grid;
  gap: 1px;
  margin-top: clamp(26px, 3.6vw, 46px);
  background: var(--pr-hair);
  border: 1px solid var(--pr-hair);
}

.page-products .pr-layer {
  position: relative;
  background: var(--by-ink-2);
  padding: 26px 22px 28px;
  min-width: 0;
}

.page-products .pr-layer::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--by-lime);
  transform: scaleY(0.16);
  transform-origin: top;
  transition: transform 0.32s var(--by-ease);
}

.page-products .pr-layer:hover::before {
  transform: scaleY(1);
}

.page-products .pr-layer__num {
  margin: 0;
  font-family: var(--by-font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--by-mist);
}

.page-products .pr-layer__title {
  margin: 10px 0 0;
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--by-paper);
}

.page-products .pr-layer__text {
  margin: 12px 0 0;
  font-size: 15.5px;
  color: var(--by-pale);
}

.page-products .pr-layer__list {
  list-style: none;
  margin: 18px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--pr-hair);
  display: grid;
  gap: 8px;
  font-size: 14px;
  color: var(--by-mist);
}

.page-products .pr-layer__list li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

.page-products .pr-layer__list .by-data {
  font-size: 13px;
  color: var(--by-lime);
}

/* ---------- 集锦轨道 ---------- */
.page-products .pr-rail {
  display: flex;
  gap: 12px;
  margin-top: clamp(26px, 3.4vw, 40px);
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-products .pr-rail::-webkit-scrollbar {
  display: none;
}

.page-products .pr-clip {
  flex: 0 0 auto;
  width: min(76vw, 262px);
  border: 1px solid var(--pr-hair);
  background: var(--by-ink-3);
  padding: 16px;
  transition: border-color 0.24s var(--by-ease), transform 0.24s var(--by-ease);
}

.page-products .pr-clip:hover {
  border-color: var(--by-lime);
  transform: translateY(-2px);
}

.page-products .pr-clip__title {
  margin: 12px 0 0;
  font-size: 16px;
  font-weight: 800;
  line-height: 1.5;
  color: var(--by-paper);
}

.page-products .pr-clip__meta {
  margin: 10px 0 0;
  font-size: 12px;
  color: var(--by-mist);
}

/* ---------- 图文分栏 ---------- */
.page-products .pr-split {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
  margin-top: clamp(26px, 3.6vw, 46px);
}

.page-products .pr-split__text {
  min-width: 0;
}

.page-products .pr-split__lead {
  margin: 0;
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.75;
  color: var(--by-paper);
}

.page-products .pr-split__text p {
  color: var(--by-pale);
  font-size: 15.5px;
}

.page-products .pr-split__note {
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--by-orange);
  color: var(--by-pale);
  font-size: 15px;
}

.page-products .pr-figure {
  margin: 0;
  border: 1px solid var(--pr-hair-2);
  background: var(--by-ink-3);
  position: relative;
  overflow: hidden;
}

.page-products .pr-figure::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 42px;
  height: 2px;
  background: var(--by-lime);
  z-index: 2;
}

.page-products .pr-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.92);
}

.page-products .pr-figure__cap {
  padding: 10px 14px;
  font-family: var(--by-font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--by-mist);
  border-top: 1px solid var(--pr-hair);
  background: var(--by-ink-2);
}

.page-products .pr-figure--tall img {
  aspect-ratio: 5 / 6;
}

.page-products .pr-figure--wide {
  margin-top: clamp(26px, 3.4vw, 42px);
}

.page-products .pr-figure--wide img {
  aspect-ratio: 14 / 9;
}

.page-products .pr-figure--banner {
  margin-top: clamp(26px, 3.4vw, 42px);
}

.page-products .pr-figure--banner img {
  aspect-ratio: 16 / 7;
}

/* ---------- 字段列表 ---------- */
.page-products .pr-fields {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--pr-hair);
  border: 1px solid var(--pr-hair);
}

.page-products .pr-field {
  background: var(--by-ink-2);
  padding: 12px 14px;
  display: grid;
  gap: 2px;
}

.page-products .pr-field__k {
  font-family: var(--by-font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--by-lime);
}

.page-products .pr-field__v {
  font-size: 15px;
  color: var(--by-pale);
  line-height: 1.7;
}

/* ---------- 03 数据对照 ---------- */
.page-products .pr-compare {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
  margin-top: clamp(26px, 3.6vw, 46px);
}

.page-products .pr-modes {
  display: grid;
  gap: 1px;
  margin-top: 22px;
  background: var(--pr-hair);
  border: 1px solid var(--pr-hair);
}

.page-products .pr-mode {
  background: var(--by-ink-2);
  padding: 16px 18px;
  border-left: 2px solid transparent;
  transition: border-color 0.24s var(--by-ease), background 0.24s var(--by-ease);
}

.page-products .pr-mode:hover {
  border-left-color: var(--by-lime);
  background: var(--by-ink-3);
}

.page-products .pr-mode__num {
  margin: 0;
  font-family: var(--by-font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--by-mist);
}

.page-products .pr-mode__title {
  margin: 6px 0 0;
  font-size: 18px;
  font-weight: 900;
  color: var(--by-lime);
}

.page-products .pr-mode p {
  margin: 8px 0 0;
  font-size: 15px;
  color: var(--by-pale);
}

.page-products .pr-datacard {
  margin-top: clamp(24px, 3vw, 38px);
  background: var(--by-paper);
  color: var(--by-ink);
  border: 1px solid var(--by-line);
  padding: 18px 16px;
}

.page-products .pr-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-products .pr-table {
  width: 100%;
  min-width: 420px;
  border-collapse: collapse;
  font-family: var(--by-font-mono);
  font-size: 13.5px;
}

.page-products .pr-table caption {
  text-align: left;
  padding-bottom: 12px;
  font-family: var(--by-font-sans);
  font-size: 16px;
  font-weight: 900;
  color: var(--by-ink);
}

.page-products .pr-table th,
.page-products .pr-table td {
  padding: 10px 8px;
  text-align: right;
  border-bottom: 1px solid rgba(2, 9, 6, 0.14);
  white-space: nowrap;
}

.page-products .pr-table th:first-child,
.page-products .pr-table td:first-child {
  text-align: left;
  white-space: normal;
}

.page-products .pr-table thead th {
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: #4a5b52;
  border-bottom: 1px solid var(--by-line);
}

.page-products .pr-table tbody th {
  font-weight: 500;
  color: #2c3d34;
}

.page-products .pr-table tbody td {
  color: var(--by-ink);
  font-weight: 700;
}

/* ---------- 04 会员条款 ---------- */
.page-products .pr-benefits {
  display: grid;
  gap: clamp(26px, 3.4vw, 44px);
  margin-top: clamp(26px, 3.6vw, 46px);
}

.page-products .pr-benefits__intro {
  min-width: 0;
}

.page-products .pr-benefits__intro p {
  color: var(--by-pale);
  font-size: 15.5px;
}

.page-products .pr-phone {
  margin: 24px 0 0;
  max-width: 280px;
  border: 1px solid var(--pr-hair-2);
  background: linear-gradient(180deg, rgba(11, 44, 34, 0.9), rgba(4, 20, 15, 0.92));
  padding: 10px;
  position: relative;
}

.page-products .pr-phone::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 10px;
  width: 46px;
  height: 2px;
  background: var(--by-lime);
}

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

.page-products .pr-phone .pr-figure__cap {
  border-top: 1px solid var(--pr-hair);
  margin-top: 8px;
  background: transparent;
  padding: 8px 2px 0;
}

.page-products .pr-terms {
  display: grid;
  gap: 10px;
  min-width: 0;
}

.page-products .pr-term {
  border: 1px solid var(--pr-hair);
  background: var(--by-ink-2);
  transition: border-color 0.24s var(--by-ease);
}

.page-products .pr-term:hover {
  border-color: var(--by-hair-lime);
}

.page-products .pr-term[data-open] {
  border-color: var(--by-lime);
  background: var(--by-ink-3);
}

.page-products .pr-term__h {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-products .pr-term__head {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 16px 18px;
  background: transparent;
  border: 0;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.page-products .pr-term__num {
  font-family: var(--by-font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--by-lime);
  flex: none;
}

.page-products .pr-term__name {
  flex: 1 1 auto;
  min-width: 0;
  font-size: clamp(16px, 2vw, 19px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--by-paper);
}

.page-products .pr-term__sign {
  flex: none;
  width: 14px;
  height: 14px;
  position: relative;
}

.page-products .pr-term__sign::before,
.page-products .pr-term__sign::after {
  content: "";
  position: absolute;
  background: var(--by-lime);
  transition: transform 0.24s var(--by-ease);
}

.page-products .pr-term__sign::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-products .pr-term__sign::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.page-products .pr-term[data-open] .pr-term__sign::after {
  transform: scaleY(0);
}

.page-products .pr-term__body {
  padding: 0 18px 18px 46px;
  font-size: 15px;
  color: var(--by-pale);
}

.page-products .pr-term__body p {
  margin: 0;
}

/* ---------- 05 开放步骤 ---------- */
.page-products .pr-steps {
  list-style: none;
  margin: clamp(26px, 3.4vw, 42px) 0 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-products .pr-step {
  position: relative;
  border: 1px solid var(--pr-hair);
  background: var(--by-ink-2);
  padding: 20px 20px 22px;
  min-width: 0;
  transition: border-color 0.24s var(--by-ease);
}

.page-products .pr-step::before {
  content: "";
  position: absolute;
  left: -1px;
  top: -1px;
  bottom: -1px;
  width: 3px;
  background: var(--pr-hair-2);
}

.page-products .pr-step.is-active {
  border-color: var(--by-hair-lime);
}

.page-products .pr-step.is-active::before {
  background: var(--by-lime);
}

.page-products .pr-step + .pr-step::after {
  content: "";
  position: absolute;
  left: 24px;
  top: -18px;
  width: 1px;
  height: 18px;
  background: var(--pr-hair-2);
}

.page-products .pr-step__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--pr-hair-2);
  background: var(--by-ink-3);
  font-family: var(--by-font-mono);
  font-size: 13px;
  color: var(--by-lime);
}

.page-products .pr-step.is-active .pr-step__num {
  border-color: var(--by-lime);
  color: var(--by-ink);
  background: var(--by-lime);
}

.page-products .pr-step__title {
  margin: 14px 0 0;
  font-size: 19px;
  font-weight: 900;
  color: var(--by-paper);
}

.page-products .pr-step__text {
  margin: 8px 0 0;
  font-size: 15px;
  color: var(--by-pale);
}

.page-products .pr-steps__note {
  margin: 22px 0 0;
  font-size: 15px;
  color: var(--by-mist);
}

.page-products .pr-steps__note a {
  color: var(--by-lime);
  border-bottom: 1px solid var(--by-hair-lime);
  transition: border-color 0.2s var(--by-ease);
}

.page-products .pr-steps__note a:hover {
  border-color: var(--by-lime);
}

/* ---------- 06 使用场景 ---------- */
.page-products .pr-uses {
  display: grid;
  gap: 1px;
  margin-top: clamp(26px, 3.4vw, 42px);
  background: var(--pr-hair);
  border: 1px solid var(--pr-hair);
}

.page-products .pr-use {
  background: var(--by-ink-2);
  padding: 22px 20px;
  min-width: 0;
  transition: background 0.24s var(--by-ease);
}

.page-products .pr-use:hover {
  background: var(--by-ink-3);
}

.page-products .pr-use__title {
  margin: 12px 0 0;
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--by-paper);
}

.page-products .pr-use p {
  margin: 10px 0 0;
  font-size: 15px;
  color: var(--by-pale);
}

/* ---------- 收尾 ---------- */
.page-products .pr-cta {
  padding-block: clamp(46px, 6vw, 88px);
  border-top: 1px solid var(--pr-hair);
}

.page-products .pr-cta__inner {
  border: 1px solid var(--pr-hair-2);
  background:
    linear-gradient(120deg, rgba(11, 44, 34, 0.94), rgba(6, 30, 23, 0.74)),
    repeating-linear-gradient(90deg, transparent 0 44px, rgba(147, 169, 158, 0.07) 44px 45px);
  padding: clamp(24px, 4vw, 48px);
  position: relative;
}

.page-products .pr-cta__inner::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 88px;
  height: 3px;
  background: linear-gradient(90deg, var(--by-lime), var(--by-orange));
}

.page-products .pr-cta__title {
  margin: 14px 0 0;
  font-size: clamp(24px, 4vw, 42px);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.page-products .pr-cta__text {
  margin: 16px 0 0;
  max-width: 62ch;
  font-size: 15.5px;
  color: var(--by-pale);
}

.page-products .pr-cta__text a {
  color: var(--by-lime);
  border-bottom: 1px solid var(--by-hair-lime);
}

.page-products .pr-cta__text a:hover {
  border-color: var(--by-lime);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-products .pr-layers {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-products .pr-mode {
    border-left: 0;
    border-top: 2px solid transparent;
  }

  .page-products .pr-mode:hover {
    border-left-color: transparent;
    border-top-color: var(--by-lime);
  }

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

  .page-products .pr-datacard {
    padding: 24px 22px;
  }
}

@media (min-width: 900px) {
  .page-products .pr-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-products .pr-compare {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: start;
  }

  .page-products .pr-benefits {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    align-items: start;
  }

  .page-products .pr-benefits__intro {
    position: sticky;
    top: 24px;
  }

  .page-products .pr-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
  }

  .page-products .pr-step + .pr-step::after {
    left: -14px;
    top: 50%;
    width: 14px;
    height: 1px;
  }
}

@media (min-width: 1024px) {
  .page-products .pr-hero {
    grid-template-columns: minmax(0, 1.42fr) minmax(0, 0.86fr);
    align-items: end;
  }

  .page-products .pr-hero__preview {
    align-self: end;
  }

  .page-products .pr-split {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    gap: 48px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pr-layer::before,
  .page-products .pr-clip,
  .page-products .pr-index a::after,
  .page-products .pr-term__sign::before,
  .page-products .pr-term__sign::after {
    transition: none;
  }

  .page-products .pr-clip:hover {
    transform: none;
  }
}