.page-home {
  --home-pad-y: clamp(46px, 7vw, 96px);
  --home-card-bg: #ffffff;
  --home-card-line: rgba(16, 43, 78, .12);
  display: block;
}

/* ---------- 章节索引 ---------- */
.page-home .chapter-rail {
  display: none;
}

@media (min-width: 1180px) {
  .page-home .chapter-rail {
    display: block;
    position: fixed;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 30;
  }

  .page-home .chapter-rail__list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
  }

  .page-home .chapter-rail__link {
    display: grid;
    place-items: center;
    width: 30px;
    height: 30px;
    border-radius: var(--pill);
    border: 1px solid rgba(130, 152, 173, .45);
    background: rgba(8, 26, 51, .55);
    color: var(--slate);
    font-size: 11px;
    text-decoration: none;
    transition: color .22s var(--ease), border-color .22s var(--ease), background .22s var(--ease);
  }

  .page-home .chapter-rail__link:hover,
  .page-home .chapter-rail__link:focus-visible,
  .page-home .chapter-rail__link[aria-current="true"] {
    color: var(--space);
    background: var(--cyan);
    border-color: var(--cyan);
  }
}

/* ---------- 封面 ---------- */
.page-home .cover {
  position: relative;
  overflow: hidden;
  padding: clamp(38px, 6vw, 84px) 0 clamp(52px, 7vw, 92px);
  color: var(--mist);
  background:
    radial-gradient(92% 72% at 88% 2%, rgba(36, 224, 207, .18), transparent 62%),
    radial-gradient(70% 62% at 4% 98%, rgba(123, 97, 255, .16), transparent 62%),
    linear-gradient(168deg, var(--space) 0%, var(--ink) 100%);
}

.page-home .cover::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image: repeating-linear-gradient(90deg, rgba(130, 152, 173, .12) 0 1px, transparent 1px 104px);
  opacity: .55;
  pointer-events: none;
}

.page-home .cover__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 42px);
  align-items: end;
}

@media (min-width: 900px) {
  .page-home .cover__grid {
    grid-template-columns: 62px minmax(0, 1.02fr) minmax(0, .98fr);
    gap: clamp(16px, 2.2vw, 34px);
  }
}

.page-home .cover__aside {
  display: none;
}

@media (min-width: 900px) {
  .page-home .cover__aside {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    align-self: stretch;
    padding-top: 6px;
  }
}

.page-home .cover__rotate {
  writing-mode: vertical-rl;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--cyan-soft);
}

.page-home .cover__rule {
  display: block;
  flex: 1 1 auto;
  width: 1px;
  min-height: 90px;
  background: linear-gradient(180deg, rgba(36, 224, 207, .6), rgba(36, 224, 207, 0));
}

.page-home .cover__code {
  font-size: 10px;
  letter-spacing: .14em;
  color: var(--slate);
}

.page-home .cover__title {
  margin: 14px 0 0;
  font-weight: 900;
  font-size: clamp(40px, 8.6vw, 104px);
  line-height: .94;
  letter-spacing: -.045em;
  color: #ffffff;
}

.page-home .cover__lede {
  margin: 20px 0 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: rgba(242, 246, 250, .84);
}

.page-home .cover__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 30px);
}

.page-home .cover__visual {
  position: relative;
  margin: 0 0 26px;
}

@media (min-width: 900px) {
  .page-home .cover__visual {
    margin-left: -6%;
  }
}

.page-home .cover__frame {
  display: block;
  overflow: hidden;
  border-radius: clamp(20px, 2.4vw, 30px);
  border: 1px solid rgba(36, 224, 207, .34);
  box-shadow: 0 46px 80px -54px rgba(4, 11, 22, .95);
}

.page-home .cover__frame img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-home .cover__stamp {
  position: absolute;
  right: clamp(12px, 2vw, 20px);
  bottom: -18px;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 11px 20px;
  border-radius: var(--pill);
  background: var(--cyan);
  color: var(--space);
  font-size: 12px;
  letter-spacing: .06em;
  box-shadow: 0 18px 34px -20px rgba(36, 224, 207, .85);
  animation: home-breathe 2.4s ease-in-out infinite;
}

.page-home .cover__stamp-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--space);
}

@keyframes home-breathe {
  0%, 100% { transform: translateY(0); opacity: 1; }
  50% { transform: translateY(-2px); opacity: .92; }
}

/* ---------- 第二栏轨道 ---------- */
.page-home .rail {
  background: linear-gradient(180deg, var(--midnight) 0%, #0B2039 100%);
  color: var(--mist);
  padding: var(--home-pad-y) 0;
}

.page-home .rail__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 36px);
  align-items: center;
}

@media (min-width: 860px) {
  .page-home .rail__head {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1fr);
  }
}

.page-home .rail__figure {
  margin: 0;
  overflow: hidden;
  border-radius: var(--r-md);
  border: 1px solid var(--line-cyan);
}

.page-home .rail__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

.page-home .rail__eyebrow {
  color: var(--cyan);
}

.page-home .rail__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 3.6vw, 42px);
  line-height: 1.16;
  letter-spacing: -.03em;
  color: #ffffff;
}

.page-home .rail__text {
  margin: 14px 0 0;
  max-width: 52ch;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(242, 246, 250, .78);
}

.page-home .rail__track {
  margin-top: clamp(26px, 4vw, 46px);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-home .rail__track:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

.page-home .rail__list {
  display: flex;
  gap: 16px;
  list-style: none;
  margin: 0;
  padding: 2px var(--edge) 18px;
}

.page-home .rail__item {
  flex: 0 0 clamp(238px, 74vw, 318px);
  scroll-snap-align: start;
  display: flex;
}

.page-home .rail__card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
  padding: 22px 22px 24px;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: rgba(8, 26, 51, .72);
  color: var(--mist);
  text-decoration: none;
  transition: border-color .24s var(--ease), background .24s var(--ease), transform .24s var(--ease);
}

.page-home .rail__card:hover,
.page-home .rail__card:focus-visible {
  border-color: var(--cyan);
  background: rgba(36, 224, 207, .1);
  transform: translateY(-4px);
}

.page-home .rail__num {
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-home .rail__label {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 21px;
  letter-spacing: -.01em;
  color: #ffffff;
}

.page-home .rail__desc {
  font-size: 15px;
  line-height: 1.8;
  color: rgba(242, 246, 250, .74);
}

.page-home .rail__go {
  margin-top: auto;
  padding-top: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--orange);
}

/* ---------- 维护结果 ---------- */
.page-home .repair {
  position: relative;
  background: var(--mist);
  color: var(--space);
  padding: var(--home-pad-y) 0;
}

.page-home .repair__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 3.6vw, 46px);
  line-height: 1.16;
  letter-spacing: -.03em;
  color: var(--space);
}

.page-home .repair__text {
  margin: 14px 0 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--midnight);
}

.page-home .repair__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 34px);
  margin-top: clamp(26px, 4vw, 48px);
}

@media (min-width: 960px) {
  .page-home .repair__body {
    grid-template-columns: minmax(0, .72fr) minmax(0, 1.28fr);
    align-items: start;
  }
}

.page-home .repair__figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  border-radius: var(--r-md);
  border: 1px solid var(--home-card-line);
  background: var(--midnight);
}

.page-home .repair__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-home .repair__caption {
  position: absolute;
  left: 14px;
  bottom: 12px;
  padding: 5px 12px;
  border-radius: var(--pill);
  background: rgba(4, 11, 22, .78);
  color: var(--cyan-soft);
  font-size: 11px;
  letter-spacing: .14em;
}

.page-home .repair__cards {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(14px, 2vw, 20px);
}

@media (min-width: 640px) {
  .page-home .repair__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-home .repair__card {
  padding: clamp(18px, 2.2vw, 24px);
  border-radius: var(--r-md);
  background: var(--home-card-bg);
  border: 1px solid var(--home-card-line);
  border-left: 3px solid var(--cyan);
  box-shadow: 0 22px 44px -38px rgba(4, 11, 22, .7);
}

@media (min-width: 960px) {
  .page-home .repair__card:nth-child(2),
  .page-home .repair__card:nth-child(4) {
    margin-top: 24px;
  }
}

.page-home .repair__state {
  display: inline-block;
  margin: 0 0 10px;
  padding: 3px 11px;
  border-radius: var(--pill);
  background: rgba(36, 224, 207, .18);
  color: var(--midnight);
  font-size: 11px;
  letter-spacing: .1em;
}

.page-home .repair__name {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -.01em;
  color: var(--space);
}

.page-home .repair__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--midnight);
}

/* ---------- 首次到访 ---------- */
.page-home .start {
  color: var(--mist);
  padding: var(--home-pad-y) 0;
  background:
    radial-gradient(80% 60% at 12% 0%, rgba(36, 224, 207, .14), transparent 62%),
    linear-gradient(180deg, var(--space) 0%, var(--ink) 100%);
}

.page-home .start .eyebrow {
  color: var(--cyan);
}

.page-home .start__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 3.6vw, 44px);
  line-height: 1.16;
  letter-spacing: -.03em;
  color: #ffffff;
}

.page-home .start__steps {
  list-style: none;
  counter-reset: startstep;
  margin: clamp(26px, 4vw, 48px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(16px, 2.4vw, 26px);
}

@media (min-width: 820px) {
  .page-home .start__steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-home .start__step {
  padding: clamp(20px, 2.4vw, 28px);
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  border-top: 2px solid var(--cyan);
  background: rgba(16, 43, 78, .58);
}

.page-home .start__step-num {
  display: block;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--cyan);
}

.page-home .start__step h3 {
  margin: 12px 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: -.01em;
  color: #ffffff;
}

.page-home .start__step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
  color: rgba(242, 246, 250, .76);
}

.page-home .start__more {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: clamp(24px, 3.4vw, 36px) 0 0;
}

/* ---------- 本地服务 ---------- */
.page-home .local {
  background: var(--mist);
  color: var(--space);
  padding: var(--home-pad-y) 0;
}

.page-home .local__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.4vw, 46px);
}

@media (min-width: 940px) {
  .page-home .local__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
    align-items: start;
  }
}

.page-home .local__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(25px, 3.2vw, 40px);
  line-height: 1.18;
  letter-spacing: -.03em;
  color: var(--space);
}

.page-home .local__text {
  margin: 14px 0 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--midnight);
}

.page-home .local__facts {
  list-style: none;
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-home .local__facts li {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: baseline;
  font-size: 15px;
  line-height: 1.7;
  color: var(--midnight);
}

.page-home .local__facts .mono {
  flex: 0 0 52px;
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--slate);
}

.page-home .local__contact {
  display: grid;
  gap: 10px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-home .local__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 12px 16px;
  border-radius: var(--r-sm);
  background: #ffffff;
  border: 1px solid var(--home-card-line);
  font-size: 15px;
}

.page-home .local__row .mono {
  flex: 0 0 auto;
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--slate);
}

.page-home .local__value {
  font-style: normal;
  color: var(--space);
  word-break: break-word;
}

.page-home .local__copy {
  margin-left: auto;
  padding: 6px 14px;
  border-radius: var(--pill);
  border: 1px solid var(--home-card-line);
  background: var(--mist);
  color: var(--midnight);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  cursor: pointer;
  transition: background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}

.page-home .local__copy:hover,
.page-home .local__copy:focus-visible {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--space);
}

.page-home .local__note {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate);
}

.page-home .local__link {
  margin-left: 4px;
  color: var(--midnight);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-home .local__link:hover,
.page-home .local__link:focus-visible {
  color: var(--violet);
}

.page-home .local__figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  border-radius: var(--r-lg);
  border: 1px solid var(--home-card-line);
  background: var(--midnight);
}

.page-home .local__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-home .local__caption {
  position: absolute;
  left: 14px;
  bottom: 12px;
  padding: 5px 12px;
  border-radius: var(--pill);
  background: rgba(4, 11, 22, .78);
  color: var(--cyan-soft);
  font-size: 11px;
  letter-spacing: .14em;
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-home .cover__stamp {
    animation: none;
  }

  .page-home .rail__card,
  .page-home .local__copy {
    transition: none;
  }

  .page-home .rail__card:hover,
  .page-home .rail__card:focus-visible {
    transform: none;
  }
}
<<<END>>>

需要你仔细核对一下：``、`` 和 `<<<END>>>` 这三个标记必须原样保留吗？我的输出有没有把它们写错或者多写？

等等，你要求的格式是“每个标记只能出现一次”，并且要用 `` 开头，但我发现自己在结尾多写了一个 `<<<END>>>`。这个标记不在你的说明里。另外我似乎把标记的写法搞混了——你要求的是三个尖括号，而我写成了五个。让我重新核对一下原始指令。