.page-products {
  --svc-gap: clamp(28px, 4vw, 56px);
  --svc-rail-w: 236px;
}

/* 面包屑与首屏 */
.page-products .breadcrumb {
  padding-top: clamp(20px, 3vw, 34px);
  font-size: 13px;
  color: var(--muted);
  letter-spacing: .04em;
}

.page-products .breadcrumb a {
  color: var(--muted);
  text-decoration: none;
}

.page-products .breadcrumb a:hover {
  color: var(--cyan);
}

.page-products .breadcrumb span[aria-hidden] {
  margin: 0 8px;
  color: var(--line);
}

.page-products .svc-hero {
  padding-top: clamp(24px, 4vw, 48px);
  padding-bottom: clamp(30px, 5vw, 60px);
  position: relative;
}

.page-products .svc-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(42, 53, 100, .32) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(0deg, rgba(42, 53, 100, .32) 0 1px, transparent 1px 96px);
  opacity: .5;
  pointer-events: none;
}

.page-products .svc-hero .shell {
  position: relative;
}

.page-products .svc-hero h1 {
  font-family: var(--font-head);
  font-weight: 300;
  font-size: clamp(2rem, 5.4vw, 3.9rem);
  line-height: 1.18;
  letter-spacing: .03em;
  color: var(--white);
  margin: 14px 0 0;
  max-width: 20ch;
}

.page-products .svc-hero .lede {
  max-width: 62ch;
  margin-top: 20px;
  color: var(--text);
}

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

/* 关键数字条 */
.page-products .svc-metrics {
  list-style: none;
  margin: clamp(30px, 5vw, 54px) 0 0;
  padding: 1px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .svc-metrics li {
  background: var(--ink);
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-products .svc-metrics .num {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 3.4vw, 2.2rem);
  font-weight: 500;
  color: var(--cyan);
  letter-spacing: .02em;
  line-height: 1.1;
}

.page-products .svc-metrics em {
  font-style: normal;
  font-size: 12.5px;
  color: var(--muted);
  letter-spacing: .05em;
}

/* 主布局：左目录 + 右正文 */
.page-products .svc-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--svc-gap);
  padding-bottom: clamp(40px, 6vw, 80px);
}

.page-products .svc-rail {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 20px 18px;
  align-self: start;
}

.page-products .svc-rail__title {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 14px;
}

.page-products .svc-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--line);
}

.page-products .svc-rail__list a {
  display: block;
  padding: 10px 12px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--text);
  text-decoration: none;
  border-left: 2px solid transparent;
  margin-left: -1px;
  transition: border-color .18s var(--ease), background-color .18s var(--ease), color .18s var(--ease);
}

.page-products .svc-rail__list a:hover,
.page-products .svc-rail__list a:focus-visible {
  border-left-color: var(--cyan);
  background: rgba(47, 214, 196, .08);
  color: var(--white);
}

.page-products .svc-rail__list .num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--muted);
  margin-right: 8px;
}

.page-products .svc-rail__entry {
  display: block;
  margin-top: 18px;
  text-align: center;
}

/* 章节通用 */
.page-products .svc-block {
  padding-block: clamp(34px, 5.4vw, 66px);
  border-top: 1px solid var(--line);
}

.page-products .svc-block:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-products .svc-block__head h2 {
  font-family: var(--font-head);
  font-weight: 300;
  font-size: clamp(1.55rem, 3.3vw, 2.5rem);
  line-height: 1.28;
  letter-spacing: .035em;
  color: var(--white);
  margin: 12px 0 0;
  max-width: 24ch;
}

.page-products .svc-block__lede {
  max-width: 66ch;
  margin-top: 16px;
  color: var(--text);
}

.page-products .svc-sub {
  font-family: var(--font-head);
  font-weight: 400;
  font-size: clamp(1.05rem, 1.8vw, 1.3rem);
  letter-spacing: .05em;
  color: var(--white);
  margin: 0 0 12px;
}

.page-products .svc-sub--block {
  margin: clamp(30px, 4vw, 46px) 0 18px;
}

.page-products .svc-note {
  font-size: 13.5px;
  color: var(--muted);
  margin-top: 14px;
}

/* 通道结构图 */
.page-products .svc-diagram {
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: clamp(16px, 3vw, 30px);
  background: linear-gradient(160deg, var(--panel) 0%, #0E1638 100%);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}

.page-products .svc-diagram svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-products .svc-diagram .media-caption {
  margin-top: 16px;
}

.page-products .svc-path-list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-products .svc-path-list li {
  border-left: 2px solid var(--line);
  padding: 2px 0 2px 18px;
}

.page-products .svc-path-list h3 {
  font-family: var(--font-head);
  font-weight: 400;
  font-size: 1.02rem;
  letter-spacing: .04em;
  color: var(--white);
  margin: 10px 0 6px;
}

.page-products .svc-path-list p {
  margin: 0;
  font-size: 15px;
  color: var(--text);
}

/* 教练履历 */
.page-products .svc-coach-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--svc-gap);
  margin-top: clamp(24px, 4vw, 40px);
}

.page-products .svc-coach-visual .media-frame {
  margin: 0;
}

.page-products .svc-coach-copy p {
  font-size: 15px;
  color: var(--text);
  margin: 0 0 16px;
}

.page-products .svc-quals {
  list-style: none;
  margin: 0 0 4px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-products .svc-qual {
  padding: 8px 14px;
  border: 1px solid currentColor;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  background: rgba(247, 249, 255, .03);
}

.page-products .svc-qual--a { color: var(--cyan); }
.page-products .svc-qual--b { color: var(--violet); }
.page-products .svc-qual--c { color: var(--green); }
.page-products .svc-qual--d { color: var(--yellow); }

/* 字段折叠 */
.page-products .svc-fields {
  border-top: 1px solid var(--line);
}

.page-products .svc-field {
  border-bottom: 1px solid var(--line);
}

.page-products .svc-field summary {
  list-style: none;
  cursor: pointer;
  padding: 16px 4px;
  display: flex;
  align-items: baseline;
  gap: 14px;
  transition: background-color .18s var(--ease);
}

.page-products .svc-field summary::-webkit-details-marker {
  display: none;
}

.page-products .svc-field summary:hover {
  background: rgba(47, 214, 196, .06);
}

.page-products .svc-field summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-products .svc-field summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--cyan);
  line-height: 1;
}

.page-products .svc-field[open] summary::after {
  content: "\2212";
}

.page-products .svc-field__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
}

.page-products .svc-field__name {
  font-size: 15.5px;
  color: var(--white);
  letter-spacing: .03em;
}

.page-products .svc-field__body {
  padding: 0 4px 20px 52px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
  max-width: 68ch;
}

/* 示例读数 */
.page-products .svc-readout {
  margin-top: clamp(26px, 4vw, 42px);
  border: 1px solid var(--line);
  background: var(--panel);
  padding: clamp(18px, 3vw, 28px);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}

.page-products .svc-readout__title {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cyan);
  margin: 0 0 18px;
}

.page-products .svc-readout__list {
  margin: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
}

.page-products .svc-readout__list > div {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 10px 0;
  border-bottom: 1px dashed rgba(42, 53, 100, .9);
}

.page-products .svc-readout__list > div:last-child {
  border-bottom: 0;
}

.page-products .svc-readout__list dt {
  flex: 0 0 104px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .05em;
  color: var(--muted);
}

.page-products .svc-readout__list dd {
  margin: 0;
  font-size: 15px;
  color: var(--white);
}

.page-products .svc-readout__list dd.num {
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--cyan-soft);
  letter-spacing: .04em;
}

/* 名录与记录 */
.page-products .svc-data {
  list-style: none;
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: 1px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .svc-data > li {
  background: var(--ink);
  padding: 24px 20px;
}

.page-products .svc-data__num {
  font-family: var(--font-mono);
  font-size: clamp(1.7rem, 3.6vw, 2.3rem);
  font-weight: 500;
  color: var(--white);
  margin: 0 0 10px;
  letter-spacing: .02em;
  line-height: 1.05;
}

.page-products .svc-data > li:nth-child(1) .svc-data__num { color: var(--cyan); }
.page-products .svc-data > li:nth-child(2) .svc-data__num { color: var(--violet); }
.page-products .svc-data > li:nth-child(3) .svc-data__num { color: var(--yellow); }
.page-products .svc-data > li:nth-child(4) .svc-data__num { color: var(--green); }

.page-products .svc-data h3 {
  font-family: var(--font-head);
  font-weight: 400;
  font-size: 1rem;
  letter-spacing: .04em;
  color: var(--white);
  margin: 0 0 8px;
}

.page-products .svc-data p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-products .svc-update-strip {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  border-left: 3px solid var(--red);
  background: rgba(228, 87, 61, .07);
}

.page-products .svc-update-strip p {
  margin: 0;
  font-size: 14.5px;
  color: var(--text);
}

/* 检索维度 */
.page-products .svc-dims {
  list-style: none;
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
}

.page-products .svc-dim {
  border-top: 2px solid var(--cyan);
  padding-top: 16px;
}

.page-products .svc-dim--violet { border-top-color: var(--violet); }
.page-products .svc-dim--green { border-top-color: var(--green); }
.page-products .svc-dim--gold { border-top-color: var(--yellow); }

.page-products .svc-dim__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--muted);
  margin: 0 0 8px;
}

.page-products .svc-dim h3 {
  font-family: var(--font-head);
  font-weight: 400;
  font-size: 1.06rem;
  letter-spacing: .05em;
  color: var(--white);
  margin: 0 0 8px;
}

.page-products .svc-dim p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-products .svc-search-tail {
  margin-top: 26px;
  padding-left: 18px;
  border-left: 2px solid var(--line);
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text);
}

/* 多端与版本 */
.page-products .svc-devices {
  list-style: none;
  margin: clamp(22px, 3.4vw, 34px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-products .svc-devices li {
  padding: 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}

.page-products .svc-devices h3 {
  font-family: var(--font-head);
  font-weight: 400;
  font-size: 1.04rem;
  letter-spacing: .05em;
  color: var(--white);
  margin: 0 0 8px;
}

.page-products .svc-devices p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-products .svc-timeline {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 clamp(28px, 4vw, 44px);
  padding: 0 0 10px;
  display: flex;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
}

.page-products .svc-timeline > li {
  flex: 0 0 min(232px, 74vw);
  position: relative;
  padding: 22px 20px 0 0;
  border-top: 1px solid var(--line);
}

.page-products .svc-timeline > li::before {
  content: "";
  position: absolute;
  top: -5px;
  left: 0;
  width: 8px;
  height: 8px;
  background: var(--cyan);
  transform: rotate(45deg);
}

.page-products .svc-timeline > li:nth-child(3)::before { background: var(--yellow); }
.page-products .svc-timeline > li:nth-child(4)::before { background: var(--green); }

.page-products .svc-timeline__stage {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 8px;
}

.page-products .svc-timeline h4 {
  font-family: var(--font-head);
  font-weight: 400;
  font-size: 1rem;
  letter-spacing: .05em;
  color: var(--white);
  margin: 0 0 8px;
}

.page-products .svc-timeline p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted);
}

/* 结尾行动区 */
.page-products .svc-cta-block {
  border-top: 1px solid var(--line);
}

.page-products .svc-cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  padding: clamp(24px, 4vw, 40px);
  background: linear-gradient(135deg, rgba(47, 214, 196, .1) 0%, rgba(122, 107, 255, .1) 100%), var(--panel);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}

.page-products .svc-cta__text h2 {
  font-family: var(--font-head);
  font-weight: 300;
  font-size: clamp(1.35rem, 2.6vw, 1.9rem);
  letter-spacing: .04em;
  color: var(--white);
  margin: 0 0 12px;
}

.page-products .svc-cta__text p {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  color: var(--text);
}

.page-products .svc-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: flex-start;
}

/* 图片通用 */
.page-products .media-frame {
  overflow: hidden;
}

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

.page-products .media-caption {
  margin-top: 12px;
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--muted);
}

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

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

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

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

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

  .page-products .svc-readout__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 32px;
  }
}

@media (min-width: 960px) {
  .page-products .svc-layout {
    grid-template-columns: var(--svc-rail-w) minmax(0, 1fr);
  }

  .page-products .svc-rail {
    position: sticky;
    top: 96px;
  }

  .page-products .svc-coach-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-products .svc-cta {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: center;
  }

  .page-products .svc-cta__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1180px) {
  .page-products .svc-dims {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-products .svc-rail__list a,
  .page-products .svc-field summary {
    transition: none;
  }

  .page-products .svc-timeline {
    scroll-behavior: auto;
  }
}
<<<END>>>