.page-home {
  --ph-line: rgba(27, 46, 82, 0.95);
  --ph-line-paper: rgba(16, 25, 43, 0.18);
  --ph-r: 14px;
  background-color: var(--ink);
  color: var(--text);
}

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

/* ---------- 首屏 ---------- */
.page-home .ph-hero {
  position: relative;
  padding: 26px 0 48px;
  background-color: #050a14;
  background-image:
    radial-gradient(760px 420px at 84% -12%, rgba(22, 227, 210, 0.13), transparent 62%),
    linear-gradient(rgba(22, 227, 210, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22, 227, 210, 0.05) 1px, transparent 1px);
  background-size: auto, 96px 96px, 96px 96px;
  border-bottom: 1px solid var(--ph-line);
  overflow: hidden;
}

.page-home .ph-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--gold));
  opacity: 0.55;
}

.page-home .ph-context {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 22px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-home .ph-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
}

.page-home .ph-kicker {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-home .xt-h1 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(30px, 8vw, 54px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--text-strong);
}

.page-home .ph-lede {
  max-width: 38em;
  margin: 0 0 22px;
  font-size: var(--fs-16);
  line-height: 1.78;
  color: var(--text);
}

.page-home .ph-isle__btn {
  margin-top: 12px;
}

/* ---------- 浮岛 ---------- */
.page-home .ph-isle {
  display: block;
  position: relative;
  padding: 16px 18px;
  border: 1px solid var(--ph-line);
  border-radius: var(--ph-r);
  background-color: rgba(13, 26, 49, 0.72);
  background-image: linear-gradient(150deg, rgba(22, 227, 210, 0.06), rgba(13, 26, 49, 0) 62%);
  color: inherit;
  text-decoration: none;
  transition: border-color 0.18s var(--ease), transform 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-home .ph-isle:hover,
.page-home .ph-isle:focus-visible {
  border-color: rgba(22, 227, 210, 0.6);
  background-color: rgba(16, 32, 58, 0.92);
  transform: translateY(-2px);
}

.page-home .ph-isle__label {
  display: block;
  margin-bottom: 6px;
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-home .ph-isle__title {
  display: block;
  font-family: var(--font-display);
  font-size: var(--fs-20);
  letter-spacing: -0.01em;
  color: var(--text-strong);
}

.page-home .ph-isle__desc {
  display: block;
  margin-top: 8px;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--text);
  opacity: 0.86;
}

.page-home .ph-isle__more {
  display: block;
  max-height: 0;
  margin-top: 0;
  overflow: hidden;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--cyan);
  opacity: 0;
  transition: max-height 0.24s var(--ease), opacity 0.2s var(--ease), margin-top 0.24s var(--ease);
}

.page-home .ph-isle:hover .ph-isle__more,
.page-home .ph-isle:focus-within .ph-isle__more {
  max-height: 6em;
  margin-top: 8px;
  opacity: 1;
}

.page-home .ph-isle--main {
  margin-bottom: 14px;
  padding: 22px;
  background-image: linear-gradient(135deg, rgba(22, 227, 210, 0.14), rgba(13, 26, 49, 0.92) 58%);
}

.page-home .ph-isle--main .ph-isle__title {
  font-size: 26px;
}

.page-home .ph-entry {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

/* ---------- 图片 ---------- */
.page-home .ph-fig {
  margin: 0 0 20px;
  border: 1px solid var(--ph-line);
  border-radius: var(--ph-r);
  background-color: var(--panel);
  overflow: hidden;
}

.page-home .ph-fig--hero {
  margin: 0 0 22px;
}

.page-home .ph-fig--wide {
  margin: 24px 0 8px;
}

.page-home .ph-fig__cap {
  padding: 10px 14px;
  font-size: var(--fs-12);
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 更新记录时间线 ---------- */
.page-home .ph-tl-wrap {
  padding: 20px;
  border: 1px solid var(--ph-line);
  border-radius: var(--ph-r);
  background-color: rgba(13, 26, 49, 0.64);
}

.page-home .ph-block__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: var(--fs-20);
  letter-spacing: -0.01em;
  color: var(--text-strong);
}

.page-home .ph-block__note {
  margin: 0 0 18px;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--mist);
}

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

.page-home .ph-tl__item {
  position: relative;
  padding: 0 0 18px 20px;
  border-left: 1px solid var(--ph-line);
}

.page-home .ph-tl__item::before {
  content: "";
  position: absolute;
  left: -4.5px;
  top: 5px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(22, 227, 210, 0.16);
}

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

.page-home .ph-tl__ver {
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-home .ph-tl__title {
  margin: 5px 0 4px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text-strong);
}

.page-home .ph-tl__scope {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 章节通用 ---------- */
.page-home .ph-sec {
  padding: 52px 0;
  border-top: 1px solid var(--ph-line);
}

.page-home .ph-sec__head {
  margin-bottom: 26px;
}

.page-home .ph-sec__head .xt-h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(24px, 5.4vw, 40px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--text-strong);
}

.page-home .ph-sec__lede {
  max-width: 48em;
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 主题簇索引 ---------- */
.page-home .ph-clusters {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin-top: 20px;
}

.page-home .ph-cluster {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 12px;
  padding: 16px 0;
  border-top: 1px solid var(--ph-line);
}

.page-home .ph-cluster__num {
  padding-top: 3px;
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-home .ph-cluster__label {
  font-size: var(--fs-16);
  font-weight: 600;
  color: var(--text-strong);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.page-home .ph-cluster__label:hover,
.page-home .ph-cluster__label:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-home .ph-cluster__desc {
  margin: 6px 0 0;
  font-size: var(--fs-14);
  line-height: 1.72;
  color: var(--mist);
}

/* ---------- 纸面层：费用与周期速览 ---------- */
.page-home .ph-sec--paper {
  background-color: var(--paper);
  border-top-color: var(--ph-line-paper);
  color: var(--paper-ink);
}

.page-home .ph-sec--paper .ph-kicker {
  color: var(--cyan-deep);
}

.page-home .ph-sec--paper .ph-sec__head .xt-h2 {
  color: var(--paper-ink);
}

.page-home .ph-sec--paper .ph-sec__lede {
  color: rgba(16, 25, 43, 0.76);
}

.page-home .ph-sec--paper .ph-fig {
  margin-bottom: 0;
  border-color: rgba(16, 25, 43, 0.28);
}

.page-home .ph-numgrid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.page-home .ph-nums {
  display: grid;
  gap: 0;
}

.page-home .ph-num {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  gap: 16px;
  padding: 16px 0;
  border-top: 1px solid var(--ph-line-paper);
}

.page-home .ph-num:last-child {
  border-bottom: 1px solid var(--ph-line-paper);
}

.page-home .ph-num__val {
  font-size: clamp(30px, 6vw, 44px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--paper-ink);
}

.page-home .ph-num__val small {
  margin-left: 5px;
  font-size: 0.42em;
  font-weight: 500;
  letter-spacing: 0;
  color: var(--cyan-deep);
}

.page-home .ph-num__text {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.74;
  color: rgba(16, 25, 43, 0.78);
}

/* ---------- 分段切换：两条路径 ---------- */
.page-home .ph-tabs {
  display: block;
}

.page-home .ph-tablist {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--ph-line);
}

.page-home .xt-tab {
  appearance: none;
  padding: 8px 18px;
  border: 1px solid var(--ph-line);
  border-radius: 999px;
  background: transparent;
  color: var(--mist);
  font-family: var(--font-body);
  font-size: var(--fs-14);
  cursor: pointer;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease), background-color 0.16s var(--ease);
}

.page-home .xt-tab:hover {
  border-color: rgba(22, 227, 210, 0.55);
  color: var(--cyan);
}

.page-home .xt-tab[aria-selected="true"] {
  background-color: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
  font-weight: 600;
}

.page-home .xt-panel {
  display: block;
}

.page-home .ph-path {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-home .ph-path__step {
  padding: 18px;
  border: 1px solid var(--ph-line);
  border-radius: var(--ph-r);
  background-color: rgba(13, 26, 49, 0.6);
}

.page-home .ph-path__n {
  margin: 0;
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-home .ph-path__t {
  margin: 8px 0 6px;
  font-size: var(--fs-16);
  font-weight: 600;
  color: var(--text-strong);
}

.page-home .ph-path__d {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.74;
  color: var(--mist);
}

.page-home .ph-path__d a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 服务范围与支持 ---------- */
.page-home .ph-support {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-home .ph-support__card {
  padding-top: 16px;
  border-top: 2px solid var(--cyan);
}

.page-home .ph-support__t {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: var(--fs-20);
  letter-spacing: -0.01em;
  color: var(--text-strong);
}

.page-home .ph-support__d {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.76;
  color: var(--mist);
}

.page-home .ph-support__cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-top: 34px;
  padding-top: 24px;
  border-top: 1px solid var(--ph-line);
}

.page-home .ph-support__hint {
  flex: 1 1 240px;
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-home .ph-entry {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 900px) {
  .page-home .ph-hero {
    padding: 34px 0 64px;
  }

  .page-home .ph-hero__grid {
    grid-template-columns: 7fr 5fr;
    gap: 52px;
    align-items: start;
  }

  .page-home .ph-clusters {
    grid-template-columns: 1fr 1fr;
    column-gap: 56px;
  }

  .page-home .ph-numgrid {
    grid-template-columns: 1fr 1fr;
    gap: 52px;
    align-items: center;
  }

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

  .page-home .ph-support {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-home .ph-sec {
    padding: 68px 0;
  }
}

@media (hover: none) {
  .page-home .ph-isle__more {
    max-height: 6em;
    margin-top: 8px;
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .ph-isle,
  .page-home .ph-isle__more,
  .page-home .xt-tab,
  .page-home .ph-cluster__label {
    transition: opacity 0.12s linear;
    transform: none;
  }
}