.page-home {
  --home-cut-hero: polygon(0 7%, 100% 0, 100% 93%, 0 100%);
  --home-cut-hero-lg: polygon(13% 0, 100% 0, 100% 100%, 0 100%);
  display: block;
}

.page-home .section {
  padding-block: 64px;
  position: relative;
}

/* ---------- 面包屑 ---------- */
.page-home .crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: 22px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--c-dim);
}

.page-home .crumb__sep {
  color: var(--c-line);
}

/* ---------- 首屏 ---------- */
.page-home .hero {
  position: relative;
  overflow: hidden;
  padding-block: 28px 48px;
}

.page-home .hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  align-items: center;
}

.page-home .hero__body {
  position: relative;
  z-index: 2;
  min-width: 0;
}

.page-home .hero__body h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 8.4vw, 74px);
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--c-white);
}

.page-home .hero__body .lede {
  margin-top: 18px;
  max-width: 34em;
  color: var(--c-silver);
  font-size: 16px;
  line-height: 1.75;
}

.page-home .hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-home .hero__facts {
  list-style: none;
  margin: 28px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--c-line);
  display: grid;
  gap: 10px;
}

.page-home .hero__facts li {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 6px 16px;
  align-items: baseline;
}

.page-home .hero__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--c-dim);
}

.page-home .hero__v {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--c-white);
  text-align: right;
  word-break: break-word;
}

.page-home .hero__visual {
  position: relative;
  min-height: 300px;
  overflow: hidden;
  border: 1px solid var(--c-line);
  background: linear-gradient(158deg, rgba(19, 90, 140, 0.6) 0%, rgba(5, 7, 10, 0.1) 58%, rgba(5, 7, 10, 0.9) 100%);
  clip-path: var(--home-cut-hero);
}

.page-home .hero__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.66;
  filter: saturate(0.82) contrast(1.08);
}

.page-home .hero__visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(162deg, rgba(19, 90, 140, 0.42) 0%, rgba(5, 7, 10, 0.12) 52%, rgba(5, 7, 10, 0.78) 100%);
  pointer-events: none;
}

.page-home .hero__ticks {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 46%;
  z-index: 1;
  background-image: repeating-linear-gradient(to bottom, rgba(79, 184, 255, 0.42) 0 1px, transparent 1px 22px);
  -webkit-mask-image: linear-gradient(to left, #000 8%, transparent 100%);
  mask-image: linear-gradient(to left, #000 8%, transparent 100%);
  pointer-events: none;
}

.page-home .hero__coord {
  position: absolute;
  z-index: 2;
  top: 16px;
  left: 18px;
  padding: 4px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--c-blue);
  background: rgba(5, 7, 10, 0.66);
  border: 1px solid var(--c-line);
}

/* ---------- 第二栏：入口变更说明 ---------- */
.page-home .notice {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  border: 1px solid var(--c-line);
  background: var(--c-steel);
  box-shadow: inset 0 0 0 1px rgba(79, 184, 255, 0.18), var(--shadow-soft);
}

.page-home .notice__media {
  position: relative;
  min-height: 190px;
  overflow: hidden;
  border-bottom: 1px solid var(--c-line);
}

.page-home .notice__media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
}

.page-home .notice__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(5, 7, 10, 0.15) 0%, rgba(22, 29, 37, 0.85) 100%);
}

.page-home .notice__coord {
  position: absolute;
  z-index: 2;
  top: 14px;
  left: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--c-silver);
  background: rgba(5, 7, 10, 0.7);
  border: 1px solid var(--c-line);
  padding: 3px 8px;
}

.page-home .notice__body {
  padding: 22px 20px 28px;
  min-width: 0;
}

.page-home .notice__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-home .notice__flag {
  display: inline-block;
  padding: 4px 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--c-orange);
  border: 1px solid rgba(255, 138, 43, 0.5);
  background: rgba(255, 138, 43, 0.08);
}

.page-home .notice__batch {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--c-dim);
}

.page-home .notice__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(26px, 5vw, 38px);
  line-height: 1.08;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--c-white);
}

.page-home .notice__sub {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-silver);
}

.page-home .notice__h3 {
  margin: 26px 0 12px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--c-blue);
  font-family: var(--font-mono);
}

.page-home .notice__list,
.page-home .notice__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-home .notice__list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-silver);
}

.page-home .notice__list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.7em;
  width: 6px;
  height: 6px;
  background: var(--c-blue);
  transform: rotate(45deg);
}

.page-home .notice__steps {
  counter-reset: step;
}

.page-home .notice__steps li {
  counter-increment: step;
  position: relative;
  padding-left: 38px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-white);
}

.page-home .notice__steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.15em;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-blue);
}

/* ---------- 数据带 ---------- */
.page-home .section--band {
  padding-block: 44px;
  background: var(--c-carbon);
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
}

.page-home .stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 26px 20px;
}

.page-home .stats__item {
  position: relative;
  padding-top: 16px;
  border-top: 1px solid var(--c-line);
  min-width: 0;
}

.page-home .stats__item::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 28px;
  height: 2px;
  background: var(--c-blue);
}

.page-home .stats__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(26px, 6vw, 42px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--c-white);
  font-variant-numeric: tabular-nums;
}

.page-home .stats__unit {
  display: block;
  margin-top: 9px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--c-blue);
}

.page-home .stats__note {
  margin: 9px 0 0;
  font-size: 12px;
  line-height: 1.65;
  color: var(--c-dim);
}

/* ---------- 三步路径 ---------- */
.page-home .section__head {
  max-width: 44em;
  margin-bottom: 34px;
}

.page-home .section__head h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(28px, 5.4vw, 44px);
  line-height: 1.06;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--c-white);
}

.page-home .section__head .lede {
  margin-top: 12px;
  color: var(--c-silver);
  font-size: 15px;
  line-height: 1.8;
}

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

.page-home .path__step {
  position: relative;
  padding: 22px 18px 20px;
  border: 1px solid var(--c-line);
  background: linear-gradient(180deg, rgba(22, 29, 37, 0.92) 0%, rgba(12, 17, 22, 0.6) 100%);
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.page-home .path__step:hover,
.page-home .path__step:focus-within {
  border-color: var(--c-blue);
  transform: translateY(-3px);
}

.page-home .path__num {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--c-blue);
}

.page-home .path__title {
  margin: 0;
  font-size: 17px;
  line-height: 1.45;
  font-weight: 600;
  color: var(--c-white);
}

.page-home .path__text {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--c-silver);
}

.page-home .path__hint {
  margin: 10px 0 0;
  padding-left: 12px;
  border-left: 1px solid var(--c-line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-dim);
}

.page-home .path__link {
  display: inline-block;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 184, 255, 0.35);
  padding-bottom: 2px;
  min-height: 24px;
}

.page-home .path__link:hover {
  border-bottom-color: var(--c-blue);
}

.page-home .path__link:focus-visible {
  outline: 2px solid var(--c-blue);
  outline-offset: 3px;
}

.page-home .reg {
  margin-top: 24px;
  padding: 18px 18px;
  border: 1px solid var(--c-line);
  background: rgba(12, 17, 22, 0.6);
  display: grid;
  gap: 12px;
}

.page-home .reg__title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--c-dim);
}

.page-home .reg__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  counter-reset: reg;
}

.page-home .reg__list li {
  counter-increment: reg;
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 14px;
  color: var(--c-silver);
}

.page-home .reg__list li::before {
  content: counter(reg, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--c-blue);
}

/* ---------- 换机自检 ---------- */
.page-home .swap {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  align-items: start;
}

.page-home .swap__media {
  position: relative;
  min-height: 340px;
  overflow: hidden;
  border: 1px solid var(--c-line);
  background: var(--c-steel);
  clip-path: polygon(0 0, 100% 4%, 100% 100%, 0 96%);
}

.page-home .swap__media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.62;
}

.page-home .swap__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(200deg, rgba(19, 90, 140, 0.35) 0%, rgba(5, 7, 10, 0.1) 55%, rgba(5, 7, 10, 0.75) 100%);
  pointer-events: none;
}

.page-home .swap__coord {
  position: absolute;
  z-index: 2;
  bottom: 14px;
  left: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--c-silver);
  background: rgba(5, 7, 10, 0.7);
  border: 1px solid var(--c-line);
  padding: 3px 8px;
}

.page-home .swap__body {
  min-width: 0;
}

.page-home .swap__body h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(28px, 5.4vw, 44px);
  line-height: 1.06;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--c-white);
}

.page-home .swap__body .lede {
  margin-top: 14px;
  color: var(--c-silver);
  font-size: 15px;
  line-height: 1.8;
}

.page-home .swap__list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-home .swap__list li {
  padding-left: 16px;
  border-left: 1px solid var(--c-line);
}

.page-home .swap__list strong {
  display: block;
  margin-bottom: 5px;
  font-size: 15px;
  font-weight: 600;
  color: var(--c-white);
}

.page-home .swap__list span {
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-silver);
}

.page-home .swap__stat {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 12px;
  margin: 26px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--c-line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-dim);
}

.page-home .swap__stat b {
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--c-blue);
}

/* ---------- 排查与配置速览 ---------- */
.page-home .help {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-home .help__card {
  position: relative;
  display: block;
  padding: 24px 20px 22px;
  border: 1px solid var(--c-line);
  background: var(--c-steel);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease);
}

.page-home .help__card:hover {
  border-color: var(--c-blue);
  background: #1a222b;
}

.page-home .help__card:focus-visible {
  outline: 2px solid var(--c-blue);
  outline-offset: 2px;
}

.page-home .help__card--guide {
  border-top: 2px solid rgba(255, 138, 43, 0.75);
}

.page-home .help__coord {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--c-dim);
}

.page-home .help__card h3 {
  margin: 10px 0 8px;
  font-size: 19px;
  line-height: 1.4;
  font-weight: 600;
  color: var(--c-white);
}

.page-home .help__card p {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-silver);
}

.page-home .help__go {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-blue);
}

/* ---------- 近期更新与联络 ---------- */
.page-home .section--updates {
  overflow: hidden;
  background: var(--c-carbon);
  border-top: 1px solid var(--c-line);
}

.page-home .updates__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-home .updates__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.42;
}

.page-home .updates__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(5, 7, 10, 0.66);
}

.page-home .updates__inner {
  position: relative;
  z-index: 1;
}

.page-home .updates__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
}

.page-home .updates__intro h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(28px, 5.4vw, 44px);
  line-height: 1.06;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--c-white);
}

.page-home .updates__intro p {
  margin: 14px 0 22px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-silver);
  max-width: 32em;
}

.page-home .updates__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-home .updates__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding: 16px 0;
  border-top: 1px solid rgba(169, 179, 190, 0.16);
}

.page-home .updates__item:last-child {
  border-bottom: 1px solid rgba(169, 179, 190, 0.16);
}

.page-home .tag {
  justify-self: start;
  align-self: start;
  display: inline-block;
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  font-weight: 600;
  border: 1px solid var(--c-line);
  color: var(--c-silver);
  white-space: nowrap;
}

.page-home .tag--warn {
  color: var(--c-orange);
  border-color: rgba(255, 138, 43, 0.45);
  background: rgba(255, 138, 43, 0.08);
}

.page-home .tag--info {
  color: var(--c-blue);
  border-color: rgba(79, 184, 255, 0.4);
  background: rgba(79, 184, 255, 0.07);
}

.page-home .updates__title {
  margin: 0 0 5px;
  font-size: 16px;
  line-height: 1.45;
  font-weight: 600;
  color: var(--c-white);
}

.page-home .updates__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-silver);
}

.page-home .contact-strip {
  margin-top: 40px;
  padding: 22px 20px;
  border: 1px solid var(--c-line);
  background: rgba(12, 17, 22, 0.78);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-home .contact-strip h3 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 600;
  color: var(--c-white);
}

.page-home .contact-strip p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--c-silver);
  max-width: 38em;
}

.page-home .contact-strip__links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
}

.page-home .contact-strip__minor {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
}

.page-home .contact-strip__minor:hover {
  color: var(--c-blue);
  border-bottom-color: rgba(79, 184, 255, 0.5);
}

.page-home .contact-strip__minor:focus-visible {
  outline: 2px solid var(--c-blue);
  outline-offset: 3px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-home .hero__visual {
    min-height: 360px;
  }

  .page-home .notice__media {
    min-height: 220px;
  }

  .page-home .notice__body {
    padding: 26px 26px 32px;
  }

  .page-home .updates__item {
    grid-template-columns: 104px minmax(0, 1fr);
    gap: 20px;
    align-items: start;
  }
}

@media (min-width: 768px) {
  .page-home .section {
    padding-block: 88px;
  }

  .page-home .section--band {
    padding-block: 52px;
  }

  .page-home .hero {
    padding-block: 36px 64px;
  }

  .page-home .stats {
    gap: 30px 24px;
  }

  .page-home .reg {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: 24px;
    padding: 18px 22px;
  }

  .page-home .help {
    gap: 20px;
  }

  .page-home .contact-strip {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 24px 26px;
  }
}

@media (min-width: 900px) {
  .page-home .stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
  }

  .page-home .stats__item {
    padding-inline: 24px;
  }

  .page-home .stats__item:first-child {
    padding-left: 0;
  }

  .page-home .stats__item + .stats__item {
    border-left: 1px solid var(--c-line);
  }

  .page-home .path {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-home .path__step:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 34px;
    right: -21px;
    width: 20px;
    height: 1px;
    background: linear-gradient(to right, var(--c-line), transparent);
  }

  .page-home .swap {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    gap: 52px;
    align-items: center;
  }

  .page-home .swap__media {
    min-height: 480px;
  }

  .page-home .help {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }

  .page-home .updates__grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: 56px;
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-home .hero {
    padding-block: 28px 104px;
  }

  .page-home .hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    gap: 52px;
  }

  .page-home .hero__body {
    grid-column: 1;
    grid-row: 1;
  }

  .page-home .hero__visual {
    grid-column: 2;
    grid-row: 1;
    min-height: 480px;
    clip-path: var(--home-cut-hero-lg);
  }

  .page-home .notice {
    grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
  }

  .page-home .notice__media {
    min-height: 100%;
    border-bottom: 0;
    border-right: 1px solid var(--c-line);
  }

  .page-home .notice__body {
    padding: 36px 40px 40px;
  }

  .page-home .notice__list,
  .page-home .notice__steps {
    gap: 12px;
  }
}

@media (min-width: 1240px) {
  .page-home .hero__body h1 {
    font-size: 76px;
  }

  .page-home .notice__body {
    padding: 44px 48px 48px;
  }

  .page-home .swap {
    gap: 64px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .path__step,
  .page-home .help__card,
  .page-home .contact-strip__minor {
    transition: none;
  }

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