.page-home {
  --ph-pad: clamp(44px, 6vw, 88px);
  --ph-line: var(--line-500);
  --ph-paper-line: #C9D6E4;
  --ph-paper-text: #41576F;
  background: var(--ink-900);
  color: var(--text-100);
  font-family: var(--font-sans);
  overflow-x: clip;
}

.page-home .band {
  padding: var(--ph-pad) 0;
  border-top: 1px solid var(--ph-line);
}

.page-home .band--ink800 {
  background: var(--ink-800);
}

.page-home .band--paper {
  background: var(--paper-050);
  color: var(--ink-on-paper);
  border-top-color: var(--ph-paper-line);
}

.page-home .band__head {
  max-width: 64ch;
  margin-bottom: clamp(24px, 3.4vw, 44px);
}

.page-home .band__kicker {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--cyan-400);
}

.page-home .band--paper .band__kicker {
  color: var(--teal-600);
}

.page-home h2 {
  margin: 0 0 12px;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(24px, 3.4vw, 40px);
  line-height: 1.14;
  letter-spacing: -.015em;
  color: inherit;
}

.page-home .band__sub {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-400);
}

.page-home .band--paper .band__sub {
  color: var(--ph-paper-text);
}

/* ---------- 首屏 ---------- */
.page-home .hero {
  border-top: 0;
  padding-top: clamp(26px, 4vw, 54px);
  padding-bottom: clamp(40px, 5.5vw, 76px);
  background:
    radial-gradient(circle at 82% 14%, rgba(47, 227, 208, .10), transparent 56%),
    var(--ink-900);
}

.page-home .hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-home .hero__crumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--text-400);
}

.page-home .hero__crumb a {
  color: var(--text-400);
  text-decoration: none;
}

.page-home .hero__crumb a:hover {
  color: var(--cyan-200);
}

.page-home .hero__status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  padding: 6px 10px;
  border: 1px solid var(--line-500);
  border-radius: var(--radius);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--cyan-200);
}

.page-home .hero h1 {
  margin: 0 0 18px;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(32px, 5.6vw, 64px);
  line-height: 1.03;
  letter-spacing: -.02em;
  color: var(--text-100);
}

.page-home .hero__lead {
  max-width: 46ch;
  margin: 0 0 24px;
  font-family: var(--font-serif);
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-400);
}

.page-home .hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-home .hero__facts {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-400);
}

.page-home .hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-home .hero__facts li::before {
  content: "";
  flex: none;
  width: 12px;
  height: 1px;
  background: var(--cyan-400);
  transform: translateY(-3px);
}

.page-home .hero__frame {
  position: relative;
  margin: 0;
  padding: 14px;
  border: 1px solid var(--line-500);
  border-radius: var(--radius);
  background: var(--ink-800);
  box-shadow: var(--shadow-2);
}

.page-home .hero__frame::before {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  top: 0;
  height: 6px;
  background-image: repeating-linear-gradient(90deg, var(--line-500) 0 1px, transparent 1px 11px);
}

.page-home .hero__frame img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 2px;
}

.page-home .hero__badge {
  position: absolute;
  right: 22px;
  top: 22px;
  padding: 3px 8px;
  border-radius: 2px;
  background: var(--cyan-400);
  color: var(--ink-900);
  font-size: 11px;
  letter-spacing: .1em;
}

/* ---------- 终端切换 ---------- */
.page-home .devices__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-home .devices__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}

.page-home .devices__tab {
  display: inline-block;
  padding: 8px 16px;
  border: 1px solid var(--line-500);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--text-400);
  cursor: pointer;
  transition: color 160ms var(--ease), background 160ms var(--ease), border-color 160ms var(--ease);
}

.page-home .devices__tab:hover {
  color: var(--cyan-200);
  border-color: var(--cyan-400);
}

.page-home #dev-desktop:checked ~ .devices__tabs .devices__tab[for="dev-desktop"],
.page-home #dev-tablet:checked ~ .devices__tabs .devices__tab[for="dev-tablet"],
.page-home #dev-mobile:checked ~ .devices__tabs .devices__tab[for="dev-mobile"] {
  background: var(--cyan-400);
  border-color: var(--cyan-400);
  color: var(--ink-900);
}

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

.page-home #dev-desktop:checked ~ .devices__panels .devices__panel--desktop,
.page-home #dev-tablet:checked ~ .devices__panels .devices__panel--tablet,
.page-home #dev-mobile:checked ~ .devices__panels .devices__panel--mobile {
  display: block;
}

.page-home .devices__steps {
  list-style: none;
  counter-reset: dv;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-home .devices__steps li {
  position: relative;
  counter-increment: dv;
  padding-left: 34px;
  font-family: var(--font-serif);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-400);
}

.page-home .devices__steps li::before {
  content: counter(dv, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: .15em;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--cyan-400);
}

.page-home .devices__note {
  margin: 20px 0 0;
  padding-left: 14px;
  border-left: 1px solid var(--cyan-400);
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.75;
  color: var(--text-400);
}

/* ---------- 四路径 ---------- */
.page-home .paths {
  display: grid;
  gap: 1px;
  background: var(--line-500);
  border: 1px solid var(--line-500);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-home .path {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 20px 24px;
  background: var(--ink-900);
  transition: background 160ms var(--ease);
}

.page-home .path:hover {
  background: var(--ink-700);
}

.page-home .path__no {
  margin: 0;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cyan-200);
}

.page-home .path__title {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 17px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--text-100);
}

.page-home .path__text {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--text-400);
}

.page-home .path__link {
  margin-top: auto;
  padding-top: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--cyan-400);
  text-decoration: none;
}

.page-home .path__link::after {
  content: " →";
}

.page-home .path__link:hover {
  color: var(--cyan-200);
}

/* ---------- 通用图文分栏 ---------- */
.page-home .split {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-home .shot {
  margin: 0;
  padding: 10px;
  border: 1px solid var(--line-500);
  border-radius: var(--radius);
  background: var(--ink-900);
}

.page-home .shot img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 2px;
}

.page-home .shot__cap {
  margin-top: 10px;
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--text-400);
}

.page-home .shot--wide img {
  aspect-ratio: 7 / 4;
}

.page-home .shot--band img {
  aspect-ratio: 2 / 1;
}

.page-home .band--paper .shot {
  border-color: var(--ph-paper-line);
  background: #FFFFFF;
}

.page-home .band--paper .shot__cap {
  color: var(--ph-paper-text);
}

/* ---------- 三步轨道 ---------- */
.page-home .track {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-home .track__item {
  position: relative;
  padding: 0 0 26px 52px;
}

.page-home .track__item:last-child {
  padding-bottom: 0;
}

.page-home .track__item::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 36px;
  bottom: 6px;
  width: 1px;
  background: var(--line-500);
}

.page-home .track__item:last-child::before {
  display: none;
}

.page-home .track__no {
  position: absolute;
  left: 0;
  top: 0;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-500);
  border-radius: var(--radius);
  background: var(--ink-900);
  font-size: 12px;
  color: var(--cyan-200);
}

.page-home .track__title {
  margin: 6px 0 6px;
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--text-100);
}

.page-home .track__text {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-400);
}

/* ---------- 订阅栏目带 ---------- */
.page-home .subbar {
  display: grid;
  gap: 1px;
  margin-top: clamp(24px, 3vw, 36px);
  background: var(--ph-paper-line);
  border: 1px solid var(--ph-paper-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-home .subbar__cell {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 22px 20px 24px;
  background: #FFFFFF;
}

.page-home .subbar__no {
  margin: 0;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--teal-600);
}

.page-home .subbar__title {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--ink-on-paper);
}

.page-home .subbar__subs {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 7px;
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--ph-paper-text);
}

.page-home .subbar__subs li {
  position: relative;
  padding-left: 14px;
}

.page-home .subbar__subs li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 6px;
  height: 1px;
  background: var(--teal-600);
}

.page-home .subbar__link {
  margin-top: auto;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--teal-600);
  text-decoration: none;
}

.page-home .subbar__link::after {
  content: " →";
}

.page-home .subbar__link:hover {
  color: var(--amber-600);
}

/* ---------- 版本同步 ---------- */
.page-home .sync__row {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-top: 1px solid var(--line-500);
}

.page-home .sync__row:last-of-type {
  border-bottom: 1px solid var(--line-500);
}

.page-home .sync__key {
  margin: 0;
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--cyan-200);
}

.page-home .sync__val {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 14px;
  line-height: 1.82;
  color: var(--text-400);
}

.page-home .sync__more {
  margin-top: 24px;
}

/* ---------- 自助处理 ---------- */
.page-home .fix {
  border-top: 1px solid var(--line-500);
}

.page-home .fix__item {
  border-bottom: 1px solid var(--line-500);
}

.page-home .fix__item summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 18px 0;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.5;
  color: var(--text-100);
  transition: color 160ms var(--ease);
}

.page-home .fix__item summary::-webkit-details-marker {
  display: none;
}

.page-home .fix__item summary:hover {
  color: var(--cyan-200);
}

.page-home .fix__no {
  flex: none;
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--cyan-400);
}

.page-home .fix__mark {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--cyan-400);
}

.page-home .fix__mark::before {
  content: "+";
}

.page-home .fix__item[open] .fix__mark::before {
  content: "−";
}

.page-home .fix__body {
  max-width: 68ch;
  padding: 0 0 20px 34px;
  font-family: var(--font-serif);
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-400);
}

.page-home .fix__body p {
  margin: 0;
}

.page-home .fix__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3vw, 36px);
}

.page-home a.btn {
  text-decoration: none;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-home .sync__row {
    grid-template-columns: 104px 1fr;
    gap: 20px;
    align-items: baseline;
  }

  .page-home .subbar {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-home .paths {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .page-home .hero__grid {
    grid-template-columns: 7fr 5fr;
    align-items: center;
  }

  .page-home .split {
    grid-template-columns: 5fr 7fr;
    align-items: start;
  }

  .page-home .split--text-first {
    grid-template-columns: 7fr 5fr;
  }
}

@media (min-width: 1080px) {
  .page-home .paths {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-home .subbar {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .path,
  .page-home .devices__tab,
  .page-home .fix__item summary {
    transition: none;
  }
}
<<<END>>>