.page-home {
  --home-rail-w: 208px;
}

/* ============ 首屏 ============ */
.page-home .hero {
  position: relative;
  background:
    radial-gradient(1200px 620px at 78% 8%, rgba(0, 229, 204, .14), transparent 62%),
    radial-gradient(760px 520px at 8% 96%, rgba(255, 107, 53, .12), transparent 68%),
    var(--ink);
  color: var(--paper);
  padding-block: clamp(36px, 6vw, 84px) 0;
  overflow: hidden;
}

.page-home .hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 229, 204, .5), rgba(255, 107, 53, .5), transparent);
}

.page-home .hero__layout {
  display: grid;
  gap: 30px;
}

.page-home .hero__rail {
  padding-bottom: 22px;
  border-bottom: 1px solid rgba(216, 220, 227, .2);
}

.page-home .hero__rail-kicker {
  margin: 0 0 14px;
  color: rgba(244, 241, 234, .55);
}

.page-home .hero__toc .toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-home .hero__toc .toc__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 7px 0 7px 12px;
  border-left: 2px solid rgba(216, 220, 227, .22);
  color: rgba(244, 241, 234, .62);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  letter-spacing: .02em;
  text-decoration: none;
  transition: color .2s var(--ease), border-left-color .2s var(--ease), background-color .2s var(--ease);
}

.page-home .hero__toc .toc__link:hover {
  color: var(--paper);
  border-left-color: var(--cyan);
  background-color: rgba(0, 229, 204, .07);
}

.page-home .hero__toc .toc__link.is-active,
.page-home .hero__toc .toc__link[aria-current="page"] {
  color: var(--paper);
  border-left-color: var(--signal);
  background-color: rgba(255, 107, 53, .1);
}

.page-home .hero__toc .toc__link .mono {
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--signal);
  opacity: .9;
}

.page-home .hero__kicker {
  margin: 0;
  color: var(--cyan);
}

.page-home .hero__title {
  margin: 16px 0 0;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(38px, 7.4vw, 84px);
  line-height: 1.04;
  letter-spacing: -.012em;
  color: var(--paper);
}

.page-home .hero__title-em {
  display: block;
  margin-top: .08em;
  color: var(--cyan);
}

.page-home .hero__lede {
  max-width: 52ch;
  margin: 24px 0 0;
  color: rgba(244, 241, 234, .84);
  font-size: clamp(16px, 1.4vw, 18px);
  line-height: 1.85;
}

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

.page-home .hero__quick {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
}

.page-home .hero__quick li {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 14px;
  line-height: 1.5;
  color: rgba(244, 241, 234, .74);
}

.page-home .hero__quick .mono {
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--signal);
  padding: 2px 6px;
  border: 1px solid rgba(255, 107, 53, .45);
}

.page-home .hero__figure {
  margin: 0;
}

.page-home .hero__frame {
  box-shadow: 8px 8px 0 rgba(0, 229, 204, .18);
}

.page-home .hero__figure .figure__cap {
  color: rgba(244, 241, 234, .5);
  font-size: 13px;
}

.page-home .quick-band {
  margin-top: clamp(40px, 6vw, 76px);
  border-top: 1px solid rgba(216, 220, 227, .2);
  background-color: rgba(18, 32, 58, .72);
}

.page-home .quick-band__list {
  list-style: none;
  margin-inline: auto;
  max-width: var(--wrap);
  padding: 0 clamp(16px, 4vw, 32px);
  display: flex;
  flex-wrap: wrap;
}

.page-home .quick-band__list li {
  flex: 1 1 auto;
}

.page-home .quick-band__list a {
  display: block;
  padding: 17px 18px;
  font-size: 14px;
  letter-spacing: .04em;
  color: rgba(244, 241, 234, .68);
  text-decoration: none;
  border-right: 1px solid rgba(216, 220, 227, .14);
  transition: color .2s var(--ease), background-color .2s var(--ease);
}

.page-home .quick-band__list li:first-child a {
  border-left: 1px solid rgba(216, 220, 227, .14);
}

.page-home .quick-band__list a:hover {
  color: var(--paper);
  background-color: rgba(0, 229, 204, .1);
}

/* ============ 章节通用 ============ */
.page-home .section-head {
  max-width: 62ch;
}

.page-home .chapter-no {
  display: inline-block;
  font-size: 13px;
  letter-spacing: .2em;
  color: var(--signal);
  padding-bottom: 8px;
  border-bottom: 2px solid var(--signal);
}

.page-home .band--ink .section-head__meta,
.page-home .band--deep .section-head__meta {
  color: rgba(244, 241, 234, .68);
}

/* ============ 两条主通道 ============ */
.page-home .channels__head {
  margin-bottom: clamp(28px, 4vw, 48px);
}

.page-home .channels__grid {
  display: grid;
  gap: 22px;
}

.page-home .channel {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-home .channel__list {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
  font-size: 15px;
  line-height: 1.7;
}

.page-home .channel__list li {
  position: relative;
  padding-left: 22px;
}

.page-home .channel__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 12px;
  height: 2px;
  background-color: currentColor;
  opacity: .55;
}

.page-home .channel .card__foot {
  margin-top: auto;
  padding-top: 6px;
}

.page-home .channels__figure {
  margin: clamp(30px, 4vw, 52px) 0 0;
}

.page-home .channels__figure .figure__frame {
  box-shadow: 8px 8px 0 rgba(27, 42, 74, .16);
}

/* ============ 内容路线 ============ */
.page-home .route__layout {
  margin-top: clamp(30px, 4vw, 52px);
  display: grid;
  gap: 34px;
}

.page-home .route__figure {
  margin: 0;
}

.page-home .route__figure .figure__frame {
  box-shadow: 8px 8px 0 rgba(255, 107, 53, .2);
}

.page-home .route__list {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  display: grid;
  gap: 0;
}

.page-home .route__list::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 12px;
  bottom: 26px;
  width: 1px;
  background: linear-gradient(180deg, var(--signal), var(--cyan));
  opacity: .55;
}

.page-home .route__item {
  position: relative;
  padding: 0 0 28px 34px;
}

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

.page-home .route__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background-color: var(--paper-2);
  border: 2px solid var(--signal);
}

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

.page-home .route__title {
  margin: 6px 0 8px;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(19px, 2vw, 23px);
  line-height: 1.3;
  color: var(--ink);
}

.page-home .route__body {
  margin: 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.8;
  color: #3d4658;
}

.page-home .route__link {
  display: inline-block;
  margin-top: 12px;
  font-size: 14px;
  letter-spacing: .03em;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 2px solid var(--cyan);
  padding-bottom: 2px;
  transition: color .2s var(--ease), border-bottom-color .2s var(--ease);
}

.page-home .route__link:hover {
  color: var(--teal);
  border-bottom-color: var(--signal);
}

/* ============ 版本与更新节奏 ============ */
.page-home .rhythm {
  background-image:
    linear-gradient(180deg, rgba(18, 32, 58, .92), rgba(27, 42, 74, .96));
}

.page-home .rhythm__layout {
  margin-top: clamp(30px, 4vw, 52px);
  display: grid;
  gap: 34px;
}

.page-home .rhythm__timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 22px;
  position: relative;
}

.page-home .rhythm__step {
  position: relative;
  padding-left: 36px;
}

.page-home .rhythm__step::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--cyan);
  box-shadow: 0 0 0 4px rgba(0, 229, 204, .16);
}

.page-home .rhythm__year {
  display: inline-block;
  font-size: 20px;
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-home .rhythm__text {
  margin: 6px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(244, 241, 234, .74);
}

.page-home .rhythm__figure {
  margin: 0;
}

.page-home .rhythm__figure .figure__frame {
  box-shadow: 8px 8px 0 rgba(255, 107, 53, .22);
}

.page-home .rhythm__figure .figure__cap {
  color: rgba(244, 241, 234, .5);
  font-size: 13px;
}

.page-home .rhythm__subtitle {
  margin: clamp(38px, 5vw, 62px) 0 22px;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(20px, 2.2vw, 26px);
  line-height: 1.35;
  color: var(--paper);
}

.page-home .rhythm__freq {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-home .rhythm__freq li {
  border-left: 2px solid var(--cyan);
  padding: 4px 0 4px 16px;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(244, 241, 234, .8);
}

.page-home .rhythm__freq .mono {
  display: inline-block;
  margin-right: 10px;
  color: var(--signal);
  font-size: 13px;
  letter-spacing: .1em;
}

/* ============ 固定访问建议 ============ */
.page-home .tips__grid {
  margin-top: clamp(28px, 4vw, 48px);
  display: grid;
  gap: 22px;
}

.page-home .tips__card {
  border: var(--rule) solid var(--ink);
  background-color: var(--paper-2);
  padding: clamp(22px, 3vw, 32px);
  box-shadow: 8px 8px 0 rgba(27, 42, 74, .14);
}

.page-home .tips__label {
  margin: 0;
  color: var(--teal);
}

.page-home .tips__title {
  margin: 10px 0 16px;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(20px, 2.2vw, 26px);
  line-height: 1.3;
  color: var(--ink);
}

.page-home .tips__steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: tipstep;
  display: grid;
  gap: 12px;
}

.page-home .tips__steps li {
  position: relative;
  counter-increment: tipstep;
  padding-left: 40px;
  font-size: 15px;
  line-height: 1.75;
  color: #3d4658;
}

.page-home .tips__steps li::before {
  content: counter(tipstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: .15em;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--signal);
  border: 1px solid rgba(255, 107, 53, .5);
  padding: 1px 5px;
}

.page-home .tips__note {
  margin-top: clamp(28px, 4vw, 44px);
  border-left: 3px solid var(--cyan);
  background-color: rgba(0, 229, 204, .07);
  padding: 20px 22px;
  font-size: 15px;
  line-height: 1.8;
  color: #3d4658;
}

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

.page-home .tips__note p + p {
  margin-top: 12px;
}

.page-home .tips__note a {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid var(--teal);
}

.page-home .tips__note a:hover {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

/* ============ 常见问题与联系 ============ */
.page-home .faq__list {
  margin-top: clamp(26px, 3.4vw, 40px);
  display: grid;
  gap: 12px;
}

.page-home .faq__fold {
  border: var(--rule) solid var(--ink);
  background-color: var(--paper);
  box-shadow: 5px 5px 0 rgba(27, 42, 74, .12);
}

.page-home .faq__fold .fold__sum {
  cursor: pointer;
  padding: 16px 20px;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
  list-style: none;
}

.page-home .faq__fold .fold__sum::-webkit-details-marker {
  display: none;
}

.page-home .faq__fold .fold__sum::after {
  content: "+";
  float: right;
  margin-left: 16px;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--signal);
  transition: transform .2s var(--ease);
}

.page-home .faq__fold[open] .fold__sum::after {
  transform: rotate(45deg);
}

.page-home .faq__fold .fold__body {
  padding: 0 20px 20px;
  font-size: 15px;
  line-height: 1.85;
  color: #3d4658;
}

.page-home .faq__fold .fold__body p {
  margin: 0;
}

.page-home .faq__fold .fold__body a {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid var(--teal);
}

.page-home .faq__fold .fold__body a:hover {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

.page-home .faq__contact {
  margin-top: clamp(34px, 4.4vw, 56px);
  border: var(--rule) solid var(--ink);
  border-left-width: 8px;
  background-color: var(--ink);
  color: var(--paper);
  padding: clamp(22px, 3vw, 34px);
  display: grid;
  gap: 20px;
}

.page-home .faq__contact-text .label {
  margin: 0;
  color: var(--cyan);
}

.page-home .faq__contact-lead {
  margin: 12px 0 0;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(244, 241, 234, .86);
}

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

/* ============ 响应式 ============ */
@media (min-width: 640px) {
  .page-home .rhythm__freq {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 780px) {
  .page-home .channels__grid,
  .page-home .tips__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px;
  }

  .page-home .faq__contact {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  .page-home .rhythm__layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 44px;
    align-items: start;
  }

  .page-home .rhythm__timeline {
    gap: 26px;
  }
}

@media (min-width: 940px) {
  .page-home .hero__layout {
    grid-template-columns: var(--home-rail-w) minmax(0, 1fr);
    grid-template-rows: auto auto;
    gap: 42px 46px;
    align-items: start;
  }

  .page-home .hero__rail {
    grid-column: 1;
    grid-row: 1 / span 2;
    border-bottom: 0;
    border-right: 1px solid rgba(216, 220, 227, .2);
    padding-bottom: 0;
    padding-right: 26px;
  }

  .page-home .hero__stage {
    grid-column: 2;
    grid-row: 1;
  }

  .page-home .hero__figure {
    grid-column: 2;
    grid-row: 2;
  }

  .page-home .route__layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 52px;
    align-items: start;
  }

  .page-home .route__figure {
    position: sticky;
    top: 96px;
  }
}

@media (min-width: 1060px) {
  .page-home .rhythm__freq {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 420px) {
  .page-home .quick-band__list li {
    flex-basis: 50%;
  }

  .page-home .quick-band__list a {
    padding: 14px 12px;
    font-size: 13px;
  }

  .page-home .hero__quick {
    gap: 8px 16px;
  }
}
<<<END>>>