.page-products {
  --biz-rail-w: 228px;
  --biz-ink-soft: rgba(247, 243, 234, 0.82);
  display: block;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  padding-bottom: clamp(48px, 7vw, 96px);
}

/* ---------- 首屏 ---------- */
.page-products .biz-hero {
  position: relative;
  margin-top: clamp(18px, 3vw, 34px);
  padding: clamp(22px, 3.6vw, 52px);
  background: var(--navy-900);
  color: var(--paper);
  border: 3px solid var(--navy-900);
  box-shadow: var(--hard-shadow);
  overflow: hidden;
}

.page-products .biz-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 6px;
  background: repeating-linear-gradient(90deg, var(--orange) 0 28px, transparent 28px 40px);
}

.page-products .biz-hero .breadcrumb {
  margin: 0 0 14px;
  font-size: 13px;
  color: var(--biz-ink-soft);
}

.page-products .biz-hero .breadcrumb a {
  color: var(--orange-soft);
  text-decoration: none;
}

.page-products .biz-hero .breadcrumb a:hover,
.page-products .biz-hero .breadcrumb a:focus-visible {
  text-decoration: underline;
}

.page-products .biz-hero__no {
  margin: 0;
  color: var(--teal);
  font-size: 13px;
  letter-spacing: 0.08em;
}

.page-products .biz-hero__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 5vw, 58px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  max-width: 17ch;
}

.page-products .biz-hero__lead {
  margin: 16px 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.2vw, 17px);
  line-height: 1.78;
  color: var(--biz-ink-soft);
}

.page-products .biz-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(20px, 3vw, 34px);
  background: rgba(247, 243, 234, 0.22);
  border: 1px solid rgba(247, 243, 234, 0.22);
}

.page-products .fact {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 16px;
  background: var(--navy-900);
}

.page-products .fact__num {
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  color: var(--orange-soft);
  letter-spacing: 0.02em;
}

.page-products .fact__lab {
  font-size: 13px;
  line-height: 1.5;
  color: var(--biz-ink-soft);
}

/* ---------- 左右分置骨架 ---------- */
.page-products .biz-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  margin-top: clamp(30px, 5vw, 64px);
}

.page-products .biz-rail {
  min-width: 0;
}

.page-products .biz-rail__cap {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--grey);
  text-transform: uppercase;
}

.page-products .biz-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 8px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-products .biz-rail__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 12px;
  border-left: 3px solid var(--line);
  background: var(--paper-2);
  color: var(--navy-700);
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.22s var(--ease), background 0.22s var(--ease), color 0.22s var(--ease);
}

.page-products .biz-rail__link:hover,
.page-products .biz-rail__link:focus-visible {
  border-left-color: var(--orange);
  background: var(--orange-soft);
  color: var(--navy-900);
}

.page-products .biz-rail__no {
  font-size: 11px;
  color: var(--grey);
  letter-spacing: 0.08em;
}

.page-products .biz-body {
  min-width: 0;
}

/* ---------- 通用分节 ---------- */
.page-products .biz-sec {
  margin-bottom: clamp(44px, 7vw, 92px);
  scroll-margin-top: calc(var(--ledger-h) + 26px);
}

.page-products .biz-sec:last-child {
  margin-bottom: 0;
}

.page-products .biz-sec__no {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--orange);
}

.page-products .biz-sec__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 3.2vw, 38px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  max-width: 20ch;
}

.page-products .biz-sec__lead {
  margin: 14px 0 0;
  max-width: 66ch;
  font-size: 16px;
  line-height: 1.78;
  color: #333a45;
}

.page-products .biz-sec__lead a {
  color: var(--blue-500);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-products .biz-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 36px);
  align-items: start;
  margin-top: clamp(22px, 3vw, 36px);
}

.page-products .media-frame {
  margin: 0;
  border: 3px solid var(--navy-900);
  background: var(--paper-2);
  box-shadow: var(--hard-shadow);
  overflow: hidden;
}

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

.page-products .media-frame__cap {
  padding: 9px 12px;
  border-top: 2px solid var(--navy-900);
  background: var(--paper);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--grey);
}

/* ---------- 五环节流程 ---------- */
.page-products .flow {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin: 0;
  padding: 14px 0 0;
  list-style: none;
  border-top: 3px solid var(--navy-900);
}

.page-products .flow__item {
  min-width: 0;
}

.page-products .flow__d {
  position: relative;
  height: 100%;
  background: var(--paper-2);
  border: 2px solid var(--navy-900);
  box-shadow: 3px 3px 0 rgba(11, 37, 69, 0.18);
}

.page-products .flow__d::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: var(--orange);
}

.page-products .flow__sum {
  display: block;
  padding: 14px 12px 12px;
  cursor: pointer;
  list-style: none;
}

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

.page-products .flow__sum:focus-visible {
  outline: 2px solid var(--blue-500);
  outline-offset: -2px;
}

.page-products .flow__no {
  display: block;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--grey);
}

.page-products .flow__name {
  display: block;
  margin-top: 4px;
  font-size: 16px;
  font-weight: 700;
  color: var(--navy-900);
}

.page-products .flow__panel {
  padding: 4px 12px 14px;
  border-top: 1px dashed var(--line);
  font-size: 13px;
  line-height: 1.7;
  color: #3d4552;
}

.page-products .flow__panel p {
  margin: 8px 0 0;
}

.page-products .flow__out {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--blue-500);
}

.page-products .flow__you {
  color: var(--grey);
}

.page-products .flow__d[open] {
  background: var(--orange-soft);
}

/* ---------- 版本台账 ---------- */
.page-products .ledger {
  border: 3px solid var(--navy-900);
  background: var(--paper);
  box-shadow: var(--hard-shadow);
  margin-bottom: 22px;
}

.page-products .ledger__row {
  display: grid;
  grid-template-columns: minmax(88px, 124px) minmax(0, 1fr);
  border-bottom: 1px solid var(--line);
}

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

.page-products .ledger__ver {
  padding: 13px 12px;
  background: var(--navy-700);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  line-height: 1.5;
}

.page-products .ledger__txt {
  padding: 13px 14px;
  font-size: 14px;
  line-height: 1.72;
  color: #333a45;
}

/* ---------- 大屏收录 ---------- */
.page-products .biz-screen-media {
  margin-top: clamp(22px, 3vw, 36px);
}

.page-products .biz-cols {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: clamp(22px, 3vw, 34px);
  background: var(--line);
  border: 2px solid var(--navy-900);
}

.page-products .biz-col {
  padding: 18px 16px;
  background: var(--paper);
}

.page-products .biz-col__no {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--orange);
}

.page-products .biz-col__title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--navy-900);
}

.page-products .biz-col p:last-child {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: #3d4552;
}

/* ---------- 标签 ---------- */
.page-products .tag-row__lab {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--grey);
}

.page-products .tag-row__lab:not(:first-child) {
  margin-top: 22px;
}

.page-products .tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-products .tag-row .tag {
  font-size: 13px;
  padding: 5px 10px;
  border: 2px solid var(--navy-700);
  background: var(--paper-2);
  color: var(--navy-900);
  box-shadow: 2px 2px 0 rgba(11, 37, 69, 0.16);
}

/* ---------- 终端适配（深色区块） ---------- */
.page-products .biz-sec--ink {
  background: var(--navy-900);
  color: var(--paper);
  border: 3px solid var(--navy-900);
  box-shadow: var(--hard-shadow);
  padding: clamp(24px, 3.6vw, 48px) clamp(18px, 3vw, 44px);
}

.page-products .biz-sec--ink .biz-sec__no {
  color: var(--teal);
}

.page-products .biz-sec--ink .biz-sec__title {
  color: var(--paper);
}

.page-products .biz-sec--ink .biz-sec__lead {
  color: var(--biz-ink-soft);
}

.page-products .biz-sec--ink .media-frame {
  border-color: var(--paper);
  box-shadow: 6px 6px 0 rgba(232, 114, 44, 0.4);
}

.page-products .biz-sec--ink .media-frame__cap {
  border-top-color: var(--paper);
  background: var(--navy-700);
  color: var(--paper-2);
}

.page-products .biz-term-media {
  margin-top: clamp(22px, 3vw, 34px);
}

.page-products .term-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-products .term {
  padding: 14px 14px 16px;
  border: 2px solid rgba(247, 243, 234, 0.3);
  background: rgba(247, 243, 234, 0.05);
  transition: border-color 0.22s var(--ease), background 0.22s var(--ease), transform 0.22s var(--ease);
}

.page-products .term:hover,
.page-products .term:focus-within {
  border-color: var(--orange);
  background: rgba(232, 114, 44, 0.14);
  transform: translateY(-3px);
}

.page-products .term__no {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--teal);
}

.page-products .term__name {
  margin: 8px 0 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--paper);
}

.page-products .term__spec {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.68;
  color: var(--biz-ink-soft);
}

/* ---------- 交付节奏 ---------- */
.page-products .steps {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  list-style: none;
}

.page-products .step {
  padding-top: 12px;
  border-top: 4px solid var(--orange);
  background: linear-gradient(180deg, rgba(232, 114, 44, 0.1), rgba(232, 114, 44, 0) 62%);
}

.page-products .step__day {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--grey);
}

.page-products .step__name {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  color: var(--navy-900);
}

.page-products .step p:last-child {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: #3d4552;
}

.page-products .biz-cols--3 {
  margin-top: clamp(22px, 3vw, 34px);
}

/* ---------- 成果物 ---------- */
.page-products .deliver {
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 3px solid var(--navy-900);
}

.page-products .deliver li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
  line-height: 1.72;
  color: #333a45;
}

.page-products .deliver li strong {
  color: var(--navy-900);
}

.page-products .deliver li a {
  color: var(--blue-500);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-products .deliver__no {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--grey);
}

/* ---------- 行动区 ---------- */
.page-products .biz-cta {
  margin-top: clamp(30px, 4vw, 52px);
  padding: clamp(22px, 3.2vw, 40px);
  background: var(--paper-2);
  border: 3px solid var(--navy-900);
  box-shadow: var(--hard-shadow);
}

.page-products .biz-cta__no {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--orange);
}

.page-products .biz-cta__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.6vw, 28px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--navy-900);
}

.page-products .biz-cta__text {
  margin: 12px 0 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.78;
  color: #3d4552;
}

.page-products .biz-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

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

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

  .page-products .deliver li {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 14px;
  }

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

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

@media (min-width: 820px) {
  .page-products .biz-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.02fr);
  }

  .page-products .biz-split--rev .media-frame {
    order: -1;
  }
}

@media (min-width: 960px) {
  .page-products .biz-shell {
    grid-template-columns: var(--biz-rail-w) minmax(0, 1fr);
    gap: clamp(28px, 3vw, 56px);
  }

  .page-products .biz-rail {
    position: sticky;
    top: calc(var(--ledger-h) + 18px);
    align-self: start;
  }

  .page-products .biz-rail__cap {
    margin-bottom: 12px;
  }

  .page-products .biz-rail__list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
    border-left: 2px solid var(--line);
  }

  .page-products .biz-rail__link {
    border-left: 0;
    border-bottom: 1px solid var(--line);
    background: transparent;
    padding: 11px 12px 11px 12px;
    margin-left: -2px;
    border-left: 3px solid transparent;
    white-space: normal;
  }

  .page-products .biz-rail__link:hover,
  .page-products .biz-rail__link:focus-visible {
    border-left-color: var(--orange);
    background: var(--paper-2);
  }

  .page-products .flow {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 8px;
  }

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

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

@media (min-width: 1280px) {
  .page-products .term-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 8px;
  }

  .page-products .term {
    padding: 12px 12px 14px;
  }

  .page-products .term__spec {
    font-size: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .term,
  .page-products .biz-rail__link {
    transition: none;
  }

  .page-products .term:hover,
  .page-products .term:focus-within {
    transform: none;
  }
}