.page-home {
  --home-gap: 22px;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.75;
  overflow-x: hidden;
}

.page-home img {
  display: block;
  max-width: 100%;
  height: auto;
}

/* ---------- 首屏 ---------- */
.page-home .hero {
  position: relative;
  overflow: hidden;
  background: var(--cream);
  padding: 26px 0 40px;
}

.page-home .hero__deco {
  position: absolute;
  top: -90px;
  right: -150px;
  width: 460px;
  height: 520px;
  background: var(--mist);
  clip-path: polygon(30% 0, 100% 0, 100% 74%, 0 100%);
  z-index: 0;
}

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

.page-home .hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 26px;
}

.page-home .crumbs {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--stone);
}

.page-home .crumbs__sep {
  margin: 0 6px;
  color: var(--line-strong);
}

.page-home .hero__title {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.16;
  font-size: clamp(28px, 7vw, 54px);
  margin: 10px 0 12px;
  color: var(--ink);
}

.page-home .hero__hl {
  color: var(--blue);
  white-space: nowrap;
}

.page-home .hero__lede {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: #2b3038;
  max-width: 60ch;
}

.page-home .steps {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-home .steps__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px;
  padding: 12px 14px;
  background: var(--paper);
  border-left: 3px solid var(--blue);
}

.page-home .steps__num {
  font-size: 12px;
  color: var(--blue);
  padding-top: 3px;
}

.page-home .steps__title {
  display: block;
  font-weight: 700;
  font-size: 15px;
  line-height: 1.4;
}

.page-home .steps__body p {
  margin: 4px 0 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--stone);
}

.page-home .hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  margin-top: 20px;
}

.page-home .hero__ghost {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--deep);
  text-decoration: none;
  border-bottom: 2px solid var(--orange);
  padding-bottom: 2px;
}

.page-home .hero__ghost:hover {
  color: var(--blue);
}

.page-home .hero__visual {
  position: relative;
}

.page-home .hero__figure {
  position: relative;
  z-index: 1;
  margin: 0;
  background: var(--deep);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
}

.page-home .hero__figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-home .plate {
  position: relative;
  z-index: 2;
  margin: -26px 0 0 auto;
  width: min(100%, 330px);
  display: grid;
  gap: 2px;
  padding: 14px 16px;
  background: var(--ink);
  color: var(--cream);
  clip-path: polygon(0 0, 100% 0, 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}

.page-home .plate__key {
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-home .plate__val {
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--paper);
}

.page-home .plate__note {
  font-size: 12px;
  line-height: 1.55;
  color: rgba(244, 240, 232, 0.74);
}

/* ---------- 索引轨道 + 内容流 ---------- */
.page-home .map {
  display: grid;
  gap: 18px;
  padding: 34px 0 60px;
}

.page-home .rail {
  border-top: 3px solid var(--ink);
  padding-top: 12px;
}

.page-home .rail__title {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: 0.02em;
}

.page-home .rail__hint {
  font-size: 10.5px;
  letter-spacing: 0.22em;
  color: var(--orange);
}

.page-home .rail__fig {
  margin: 0 0 14px;
  height: 150px;
  overflow: hidden;
  background: var(--mist);
}

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

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

.page-home .rail__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 10px;
  font-size: 14px;
  color: var(--ink);
  text-decoration: none;
  border-left: 2px solid var(--line);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-home .rail__list a .mono {
  font-size: 11px;
  color: var(--stone);
}

.page-home .rail__list a:hover {
  background: var(--paper);
  border-left-color: var(--blue);
}

.page-home .rail__list a[aria-current="true"] {
  background: var(--paper);
  border-left-color: var(--orange);
  font-weight: 700;
}

.page-home .rail__list a[aria-current="true"] .mono {
  color: var(--orange);
}

.page-home .stream {
  display: grid;
  min-width: 0;
}

.page-home .band {
  padding: 24px 0 30px;
  border-top: 1px solid var(--line);
}

.page-home .band:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-home .band__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  margin-bottom: 14px;
}

.page-home .band__num {
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--clay);
}

.page-home .band__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.25;
  font-size: clamp(19px, 4.2vw, 27px);
}

.page-home .band__note {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--stone);
}

.page-home .lead {
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink);
}

/* ---------- 版本 ---------- */
.page-home .version {
  display: grid;
  gap: 18px;
}

.page-home .version__fig {
  margin: 0;
  background: var(--mist);
  clip-path: polygon(var(--cut) 0, 100% 0, 100% 100%, 0 100%, 0 var(--cut));
}

.page-home .version__fig img {
  width: 100%;
  height: 100%;
  aspect-ratio: 5 / 3;
  object-fit: cover;
}

.page-home .spec {
  display: grid;
  gap: 8px;
  margin: 0 0 14px;
}

.page-home .spec > div {
  display: grid;
  gap: 1px;
  padding-bottom: 7px;
  border-bottom: 1px dashed var(--line);
}

.page-home .spec dt {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--stone);
}

.page-home .spec dd {
  margin: 0;
  font-size: 14.5px;
}

.page-home .fold {
  border: 1px solid var(--line-strong);
  background: var(--paper);
}

.page-home .fold summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 11px 14px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--deep);
}

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

.page-home .fold summary::after {
  content: "＋";
  color: var(--orange);
}

.page-home .fold[open] summary::after {
  content: "－";
}

.page-home .fold__list {
  margin: 0;
  padding: 0 14px 14px 26px;
  display: grid;
  gap: 6px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--stone);
}

.page-home .fold__list .mono {
  margin-right: 6px;
  font-size: 11px;
  color: var(--clay);
}

/* ---------- 主题簇 ---------- */
.page-home .clusters {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-home .cluster {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 2px 10px;
  padding: 11px 13px;
  background: var(--paper);
  border-left: 3px solid var(--moss);
}

.page-home .cluster__code {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--moss);
}

.page-home .cluster__name {
  font-size: 14.5px;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
}

.page-home .cluster__name:hover {
  color: var(--blue);
  text-decoration: underline;
}

.page-home .cluster__desc {
  grid-column: 1 / -1;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--stone);
}

/* ---------- 深色服务带 ---------- */
.page-home .band--dark {
  margin: 6px 0;
  padding: 26px 20px 30px;
  border-top: 0;
  background: var(--ink);
  color: var(--cream);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.page-home .band--dark .band__title {
  color: var(--paper);
}

.page-home .band--dark .band__num {
  color: var(--cyan);
}

.page-home .band--dark .band__note {
  color: rgba(244, 240, 232, 0.6);
}

.page-home .band--dark .lead {
  color: rgba(244, 240, 232, 0.86);
}

.page-home .duo {
  display: grid;
  gap: 20px;
}

.page-home .duo__fig {
  margin: 0;
  background: var(--deep);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 calc(100% - var(--cut)));
}

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

.page-home .services {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: grid;
  gap: 1px;
}

.page-home .services li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 8px 0;
  font-size: 14.5px;
  color: var(--paper);
  border-bottom: 1px solid var(--line-invert);
}

.page-home .services .mono {
  font-size: 11px;
  color: var(--orange);
}

.page-home .duo__meta {
  margin: 0 0 16px;
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

/* ---------- 常用入口 ---------- */
.page-home .routes {
  list-style: none;
  margin: 0;
  padding: 0;
}

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

.page-home .route a {
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-areas:
    "code name arrow"
    "desc desc arrow";
  align-items: center;
  gap: 2px 12px;
  padding: 13px 6px;
  color: var(--ink);
  text-decoration: none;
  transition: background var(--dur) var(--ease);
}

.page-home .route a:hover {
  background: var(--paper);
}

.page-home .route__code {
  grid-area: code;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--orange);
}

.page-home .route__name {
  grid-area: name;
  font-size: 15px;
  font-weight: 700;
}

.page-home .route__desc {
  grid-area: desc;
  font-size: 12.8px;
  line-height: 1.6;
  color: var(--stone);
}

.page-home .route__arrow {
  grid-area: arrow;
  font-size: 16px;
  color: var(--blue);
}

/* ---------- 节奏时间轴 ---------- */
.page-home .timeline {
  list-style: none;
  margin: 0;
  padding: 16px;
  display: grid;
  gap: 10px;
  background: var(--mist);
}

.page-home .tl {
  padding: 2px 0 2px 10px;
  border-left: 3px solid var(--clay);
}

.page-home .tl__num {
  display: block;
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--clay);
}

.page-home .tl p {
  margin: 4px 0 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--ink);
}

.page-home .tl__foot {
  margin: 12px 0 0;
  font-size: 13.5px;
  color: var(--stone);
}

.page-home .tl__foot a {
  color: var(--blue);
}

/* ---------- 联系支持 ---------- */
.page-home .support {
  padding: 18px;
  background: var(--paper);
  border: 1px solid var(--line-strong);
  border-left: 4px solid var(--orange);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}

.page-home .channels {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 7px;
}

.page-home .channels li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 10px;
  font-size: 14px;
}

.page-home .channels__key {
  min-width: 56px;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--stone);
}

/* ---------- 回到顶部 ---------- */
.page-home .to-top {
  position: fixed;
  right: 14px;
  bottom: 14px;
  z-index: 40;
  border: 0;
  cursor: pointer;
  padding: 9px 13px;
  background: var(--ink);
  color: var(--cream);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 10px 100%, 0 calc(100% - 10px));
}

.page-home .to-top:hover {
  background: var(--blue);
}

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

/* ---------- 响应式 ---------- */
@media (max-width: 559px) {
  .page-home .band__note {
    flex-basis: 100%;
    margin-left: 0;
  }
}

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

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

@media (min-width: 720px) {
  .page-home .band--dark {
    padding: 30px 26px 34px;
  }

  .page-home .version {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
    gap: 22px;
  }

  .page-home .route a {
    grid-template-columns: 46px 150px minmax(0, 1fr) auto;
    grid-template-areas: "code name desc arrow";
    align-items: baseline;
  }

  .page-home .timeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }
}

@media (min-width: 800px) {
  .page-home .duo {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.86fr);
    align-items: start;
    gap: 28px;
  }
}

@media (min-width: 900px) {
  .page-home .hero {
    padding: 34px 0 56px;
  }

  .page-home .hero__deco {
    top: -120px;
    right: -180px;
    width: 720px;
    height: 640px;
  }

  .page-home .hero__trail {
    display: block;
    position: absolute;
    z-index: 0;
    left: 44%;
    bottom: 30px;
    width: 210px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--orange), transparent);
    transform: rotate(-18deg);
  }

  .page-home .hero__inner {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: start;
    gap: 40px;
  }

  .page-home .hero__lede {
    font-size: 16.5px;
  }
}

@media (min-width: 960px) {
  .page-home .map {
    grid-template-columns: 288px minmax(0, 1fr);
    gap: 44px;
    align-items: start;
    padding: 44px 0 72px;
  }

  .page-home .rail {
    position: sticky;
    top: calc(var(--header-h) + 14px);
  }

  .page-home .rail__fig {
    height: 230px;
  }

  .page-home .timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home *,
  .page-home *::before,
  .page-home *::after {
    transition-duration: 1ms !important;
    animation-duration: 1ms !important;
    scroll-behavior: auto !important;
  }
}