.page-home {
  --home-space: clamp(2.5rem, 6.5vw, 5.5rem);
  background: var(--deep);
  color: var(--mist);
  overflow-x: clip;
}

.page-home .section {
  padding-block: var(--home-space);
}

.page-home .section--tight {
  padding-block: clamp(2rem, 5vw, 3.5rem);
}

.page-home .section--night {
  background: var(--night);
}

.page-home .eyebrow {
  margin: 0 0 0.9rem;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
  text-transform: uppercase;
  line-height: 1.4;
}

.page-home .section-title {
  margin: 0 0 1.1rem;
  font-size: clamp(1.5rem, 3.6vw, 2.5rem);
  line-height: 1.18;
  letter-spacing: -0.01em;
  font-weight: 700;
  color: var(--mist);
}

.page-home .prose {
  margin: 0 0 1.25rem;
  font-size: 17px;
  line-height: 1.85;
  color: var(--silver);
  max-width: var(--measure);
}

.page-home .lede {
  margin: 0;
  font-size: clamp(1rem, 1.6vw, 1.125rem);
  line-height: 1.85;
  color: var(--silver);
  max-width: 46ch;
}

.page-home .btn--ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.72rem 1.15rem;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-home .btn--ghost:hover,
.page-home .btn--ghost:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
}

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

/* 首屏刊头 */
.home-hero {
  position: relative;
  padding-block: clamp(1.75rem, 4.5vw, 3.5rem) var(--home-space);
}

.home-hero__inner {
  display: grid;
  gap: clamp(1.25rem, 3.5vw, 2rem);
}

.home-hero__context {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem 0.7rem;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--silver);
}

.home-hero__context .status-dot {
  flex: none;
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
}

.home-hero__sep {
  color: var(--line);
}

.home-hero__title {
  margin: 0;
  font-weight: 700;
  font-size: clamp(2.35rem, 8.4vw, 6rem);
  line-height: 1.04;
  letter-spacing: -0.025em;
  max-width: 12ch;
}

.home-hero__lede {
  margin: 0;
}

.home-hero__figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--night);
}

.home-hero__figure .figure__frame {
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.home-hero__figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.home-hero__figure .figure__caption {
  padding: 0.6rem 0.8rem;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--silver);
}

.home-hero__chapters {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0 1rem;
  border-top: 1px solid var(--line);
  margin-top: 0.25rem;
}

.chapter-link {
  display: grid;
  gap: 0.25rem;
  padding: 0.9rem 0.4rem 0.9rem 0;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease);
}

.chapter-link:hover,
.chapter-link:focus-visible {
  border-color: var(--cyan);
}

.chapter-link__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.chapter-link__name {
  font-size: 16px;
  font-weight: 700;
  color: var(--mist);
  transition: color var(--dur) var(--ease);
}

.chapter-link:hover .chapter-link__name,
.chapter-link:focus-visible .chapter-link__name {
  color: var(--cyan);
}

.chapter-link__note {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--silver);
}

/* 正式版入口通栏 */
.entry-banner {
  display: grid;
  grid-template-columns: 1fr;
  background: var(--orange);
  color: var(--deep);
  border-block: 1px solid rgba(5, 18, 31, 0.22);
}

.entry-banner__body {
  display: grid;
  justify-items: start;
  gap: 1rem;
  padding: clamp(1.75rem, 4.5vw, 3.25rem) var(--pad);
  transition: padding-left var(--dur) var(--ease);
}

.entry-banner:hover .entry-banner__body,
.entry-banner:focus-within .entry-banner__body {
  padding-left: calc(var(--pad) - 8px);
}

.entry-banner .eyebrow {
  margin: 0;
  color: rgba(5, 18, 31, 0.7);
}

.entry-banner__title {
  margin: 0;
  font-size: clamp(1.5rem, 4vw, 2.6rem);
  line-height: 1.14;
  letter-spacing: -0.01em;
  font-weight: 700;
  max-width: 20ch;
  color: var(--deep);
}

.entry-banner__text {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  max-width: 44ch;
  color: rgba(5, 18, 31, 0.86);
}

.entry-banner__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 0.35rem;
  padding: 0.8rem 1.2rem;
  border: 1px solid var(--deep);
  background: var(--deep);
  color: var(--warm);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-decoration: none;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.entry-banner__cta:hover,
.entry-banner__cta:focus-visible {
  background: transparent;
  color: var(--deep);
}

.entry-banner__media {
  position: relative;
  min-height: 160px;
  overflow: hidden;
}

.entry-banner__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* 数据条 */
.data-strip {
  background: var(--night);
}

.data-strip__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border-block: 1px solid var(--line);
}

.data-strip__item {
  display: grid;
  gap: 0.3rem;
  align-content: start;
  padding: 1.15rem var(--pad);
  background: var(--night);
}

.data-strip__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
  color: var(--mist);
}

.data-strip__num::after {
  content: "";
  display: block;
  width: 18px;
  height: 2px;
  margin-top: 0.5rem;
  background: var(--cyan);
}

.data-strip__label {
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--silver);
}

/* 栏目结构 */
.columns-block {
  display: grid;
  gap: clamp(1.75rem, 4.5vw, 3.25rem);
}

.columns-intro {
  align-self: start;
}

.columns-intro .btn--ghost {
  margin-top: 0.5rem;
}

.columns-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--line);
}

.columns-list__item {
  display: grid;
  gap: 0.25rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--line);
}

.columns-list__name {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  font-size: 16px;
  font-weight: 700;
  color: var(--mist);
}

.columns-list__no {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.columns-list__sub {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--silver);
}

.wave-rule {
  margin-top: clamp(2rem, 5vw, 3.25rem);
  color: var(--line);
}

.wave-rule svg {
  display: block;
  width: 100%;
  height: 24px;
}

/* 标签矩阵 */
.tag-block__head {
  max-width: 64ch;
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.tag-block__body {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
}

.tag-block__figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--deep);
}

.tag-block__figure .figure__frame {
  aspect-ratio: 10 / 7.6;
  overflow: hidden;
}

.tag-block__figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.tag-block__figure .figure__caption {
  padding: 0.6rem 0.8rem;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--silver);
}

.tag-groups {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.tag-group {
  display: grid;
  gap: 0.75rem;
  align-content: start;
  padding: 1.1rem 1rem 1.25rem;
  background: var(--slate);
}

.tag-group__title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.tag-group__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .tag {
  display: inline-flex;
  align-items: center;
  padding: 0.32rem 0.6rem;
  border: 1px solid var(--line);
  background: rgba(163, 184, 202, 0.1);
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-home .tag:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

/* 回访记录 */
.record-block {
  display: grid;
  gap: clamp(1.75rem, 4.5vw, 3.25rem);
}

.record-intro {
  align-self: start;
}

.record-intro .btn--ghost {
  margin-top: 0.5rem;
}

.timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 1.5rem;
  border-left: 1px solid var(--line);
  display: grid;
  gap: 1.5rem;
}

.timeline__item {
  position: relative;
  display: grid;
  gap: 0.3rem;
}

.timeline__item::before {
  content: "";
  position: absolute;
  top: 0.45rem;
  left: calc(-1.5rem - 4px);
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--line);
}

.timeline__item--now::before {
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 107, 44, 0.16);
  animation: home-pulse 3s ease-in-out infinite;
}

@keyframes home-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.timeline__when {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.timeline__what {
  margin: 0;
  font-size: 16px;
  line-height: 1.7;
  color: var(--mist);
}

.timeline__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--silver);
}

/* 设备入口 */
.device-block {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
}

.device-cards {
  display: grid;
  gap: 0.75rem;
}

.device-card {
  display: grid;
  gap: 0.55rem;
  padding: 1.2rem 1.1rem;
  border: 1px solid var(--line);
  background: var(--slate);
  transition: border-color var(--dur) var(--ease);
}

.device-card:hover,
.device-card:focus-within {
  border-color: var(--cyan);
}

.device-card__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.device-card__model {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.device-card__name {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  color: var(--mist);
}

.device-card__stack {
  display: grid;
}

.device-card__stack > p {
  grid-area: 1 / 1;
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--silver);
  transition: opacity var(--dur) var(--ease);
}

.device-card__stack > .device-card__alt {
  opacity: 0;
  color: var(--mist);
}

.device-card:hover .device-card__alt,
.device-card:focus-within .device-card__alt {
  opacity: 1;
}

.device-card:hover .device-card__main,
.device-card:focus-within .device-card__main {
  opacity: 0;
}

.device-block__figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--deep);
}

.device-block__figure .figure__frame {
  aspect-ratio: 3 / 4;
  overflow: hidden;
}

.device-block__figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.device-block__figure .figure__caption {
  padding: 0.6rem 0.8rem;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--silver);
}

/* 运营节奏 */
.ops-head {
  max-width: 62ch;
  margin-bottom: clamp(1.5rem, 4vw, 2.25rem);
}

.ops-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.ops-cell {
  display: grid;
  gap: 0.4rem;
  align-content: start;
  padding: 1.25rem 1.1rem 1.4rem;
  background: var(--night);
}

.ops-cell__num {
  font-family: var(--font-mono);
  font-size: clamp(1.6rem, 3.6vw, 2.1rem);
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
  color: var(--cyan);
}

.ops-cell__name {
  font-size: 16px;
  font-weight: 700;
  color: var(--mist);
}

.ops-cell__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--silver);
}

.ops-notes {
  display: grid;
  gap: 1rem;
  margin-top: clamp(1.5rem, 4vw, 2rem);
}

.ops-notes__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver);
  max-width: var(--measure);
}

.ops-notes__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* 联络 */
.contact-cue {
  display: grid;
  gap: clamp(1.25rem, 4vw, 2.5rem);
  padding-top: clamp(1.5rem, 4vw, 2.5rem);
  border-top: 1px solid var(--line);
}

.contact-cue__mail {
  display: inline-block;
  margin: 0;
  padding-bottom: 0.25rem;
  border-bottom: 1px solid var(--cyan);
  font-family: var(--font-mono);
  font-size: clamp(1.15rem, 3.4vw, 1.9rem);
  letter-spacing: -0.01em;
  color: var(--mist);
  word-break: break-all;
}

.contact-cue__phone {
  margin: 0 0 1rem;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--silver);
}

/* 断点 */
@media (min-width: 560px) {
  .tag-groups {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 620px) {
  .home-hero__chapters {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 640px) {
  .data-strip__list {
    grid-template-columns: 1fr 1fr;
  }
  .columns-list {
    grid-template-columns: 1fr 1fr;
    column-gap: clamp(1.25rem, 3vw, 2.25rem);
  }
  .ops-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 900px) {
  .entry-banner {
    grid-template-columns: 3fr 2fr;
    align-items: stretch;
  }
  .entry-banner__media {
    min-height: 100%;
  }
  .entry-banner__media img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
  }
  .record-block {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    align-items: start;
  }
  .contact-cue {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .home-hero__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    grid-template-areas:
      "ctx ctx"
      "title fig"
      "lede fig"
      "chap chap";
    column-gap: clamp(1.75rem, 4vw, 3.25rem);
    align-items: start;
  }
  .home-hero__context {
    grid-area: ctx;
  }
  .home-hero__title {
    grid-area: title;
  }
  .home-hero__lede {
    grid-area: lede;
  }
  .home-hero__figure {
    grid-area: fig;
  }
  .home-hero__chapters {
    grid-area: chap;
  }
  .columns-block {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
  .tag-block__body {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    align-items: start;
  }
  .ops-notes {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    align-items: center;
  }
}

@media (min-width: 1000px) {
  .data-strip__list {
    grid-template-columns: repeat(4, 1fr);
  }
  .device-block {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .home-hero__chapters {
    grid-template-columns: repeat(4, 1fr);
  }
  .tag-groups {
    grid-template-columns: repeat(4, 1fr);
  }
  .ops-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 1200px) {
  .entry-banner__body {
    padding-left: calc((100vw - var(--maxw)) / 2 + var(--pad));
    padding-right: var(--pad);
  }
  .entry-banner:hover .entry-banner__body,
  .entry-banner:focus-within .entry-banner__body {
    padding-left: calc((100vw - var(--maxw)) / 2 + var(--pad) - 8px);
  }
}

@media (min-width: 1320px) {
  .page-home .chapter-rail {
    display: block;
    position: fixed;
    top: 50%;
    left: max(4px, calc((100vw - var(--maxw)) / 2 - 68px));
    transform: translateY(-50%);
    width: 56px;
    z-index: 20;
  }
  .page-home .chapter-rail__list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 0.55rem;
  }
  .page-home .chapter-rail__link {
    display: grid;
    gap: 0.1rem;
    padding: 0.3rem 0.2rem 0.3rem 0.6rem;
    border-left: 1px solid var(--line);
    text-decoration: none;
    transition: border-color var(--dur) var(--ease);
  }
  .page-home .chapter-rail__link:hover,
  .page-home .chapter-rail__link[aria-current="true"] {
    border-color: var(--orange);
  }
  .page-home .chapter-rail__no {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.08em;
    color: var(--silver);
  }
  .page-home .chapter-rail__label {
    font-size: 12px;
    color: var(--silver);
  }
  .page-home .chapter-rail__link[aria-current="true"] .chapter-rail__no,
  .page-home .chapter-rail__link[aria-current="true"] .chapter-rail__label {
    color: var(--mist);
  }
}

@media (prefers-reduced-motion: reduce) {
  .timeline__item--now::before {
    animation: none;
  }
  .entry-banner__body,
  .chapter-link,
  .chapter-link__name,
  .device-card,
  .device-card__stack > p,
  .page-home .tag,
  .page-home .btn--ghost {
    transition: none;
  }
}
<<<END>>>