.page-home {
  --hm-sec-y: clamp(56px, 9vw, 104px);
  --hm-edge: 2px solid var(--gc-line);
  display: block;
  background: var(--gc-ink);
  color: var(--gc-near);
}

/* ---------- 首屏 ---------- */
.page-home .hm-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--gc-header-h) + clamp(36px, 7vw, 76px)) 0 clamp(48px, 7vw, 84px);
  background:
    radial-gradient(120% 90% at 84% 10%, rgba(108, 76, 241, .34), transparent 62%),
    radial-gradient(95% 75% at 6% 92%, rgba(55, 214, 208, .16), transparent 64%),
    var(--gc-ink);
  border-bottom: 1px solid var(--gc-line);
}

.page-home .hm-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: .5;
  background-image:
    repeating-linear-gradient(to right, rgba(29, 39, 64, .8) 0 1px, transparent 1px 72px),
    repeating-linear-gradient(to bottom, rgba(29, 39, 64, .8) 0 1px, transparent 1px 72px);
}

.page-home .hm-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(34px, 6vw, 56px);
  align-items: center;
}

.page-home .hm-hero__eyebrow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 20px;
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--gc-dust);
}

.page-home .hm-hero__title {
  margin: 0 0 22px;
  font-family: var(--gc-font-display);
  font-size: clamp(32px, 7.4vw, 58px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: .04em;
  color: var(--gc-near);
}

.page-home .hm-hero__lede {
  max-width: 48ch;
  margin: 0 0 30px;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--gc-dust);
}

.page-home .hm-nodes {
  display: grid;
  gap: 14px;
  margin-bottom: 26px;
}

.page-home .hm-node {
  position: relative;
  padding: 18px 18px 16px;
  background: rgba(16, 24, 48, .86);
  border: var(--hm-edge);
  box-shadow: 8px 8px 0 rgba(8, 11, 26, .92);
  transition: transform .25s var(--gc-ease), box-shadow .25s var(--gc-ease), border-color .25s var(--gc-ease);
}

.page-home .hm-node:hover,
.page-home .hm-node:focus-within {
  transform: translate(-3px, -3px);
  border-color: var(--gc-orange);
  box-shadow: 11px 11px 0 rgba(255, 122, 47, .3);
}

.page-home .hm-node__idx {
  display: block;
  margin-bottom: 8px;
  font-size: 12px;
  letter-spacing: .22em;
}

.page-home .hm-node__name {
  display: block;
  margin-bottom: 8px;
  font-family: var(--gc-font-display);
  font-size: 20px;
  letter-spacing: .04em;
  color: var(--gc-near);
}

.page-home .hm-node__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--gc-dust);
}

.page-home .hm-hero__hint {
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--gc-dust-dim);
}

.page-home .hm-hero__visual {
  position: relative;
  isolation: isolate;
  padding: 6px;
}

.page-home .hm-media {
  position: relative;
  z-index: 1;
  overflow: hidden;
  border: 2px solid var(--gc-line);
  border-radius: 180px 180px 10px 10px;
  box-shadow: 0 0 0 1px rgba(108, 76, 241, .34), 16px 18px 0 rgba(108, 76, 241, .2);
}

.page-home .hm-media .gc-media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-home .hm-orbit {
  position: absolute;
  z-index: 0;
  border-radius: 50%;
  pointer-events: none;
}

.page-home .hm-orbit--outer {
  inset: -5% -9%;
  border: 1px solid rgba(55, 214, 208, .38);
  animation: hm-spin 54s linear infinite;
}

.page-home .hm-orbit--outer::after {
  content: "";
  position: absolute;
  top: -5px;
  left: 50%;
  width: 9px;
  height: 9px;
  margin-left: -4.5px;
  border-radius: 50%;
  background: var(--gc-orange);
  box-shadow: 0 0 14px rgba(255, 122, 47, .9);
}

.page-home .hm-orbit--inner {
  inset: 13% 11%;
  border: 1px dashed rgba(108, 76, 241, .55);
  animation: hm-spin 74s linear infinite reverse;
}

.page-home .hm-orbit--inner::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 50%;
  width: 7px;
  height: 7px;
  margin-left: -3.5px;
  border-radius: 50%;
  background: var(--gc-cyan);
  box-shadow: 0 0 12px rgba(55, 214, 208, .85);
}

@keyframes hm-spin {
  to { transform: rotate(360deg); }
}

.page-home .hm-constellation {
  position: absolute;
  top: -4%;
  right: -6%;
  width: 58%;
  height: auto;
  z-index: 2;
  pointer-events: none;
  opacity: .9;
}

.page-home .hm-stamp {
  position: absolute;
  right: 4px;
  bottom: 5%;
  z-index: 3;
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 10px 16px 12px;
  background: var(--gc-orange);
  color: var(--gc-paper-ink);
  border: 2px solid var(--gc-orange);
  box-shadow: 8px 8px 0 rgba(8, 11, 26, .82);
}

.page-home .hm-stamp__cap {
  font-family: var(--gc-font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .16em;
}

.page-home .hm-stamp__date {
  font-family: var(--gc-font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
}

/* ---------- 章节索引带 ---------- */
.page-home .hm-index {
  position: sticky;
  top: var(--gc-header-h);
  z-index: 25;
  background: rgba(8, 11, 26, .95);
  border-bottom: 1px solid var(--gc-line);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-home .hm-index__inner {
  display: flex;
  align-items: center;
  gap: 6px;
  padding-block: 10px;
  min-width: max-content;
}

.page-home .hm-index__link {
  padding: 7px 14px;
  border: 1px solid transparent;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--gc-dust);
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s var(--gc-ease), background .2s var(--gc-ease), border-color .2s var(--gc-ease);
}

.page-home .hm-index__link:hover,
.page-home .hm-index__link:focus-visible {
  color: var(--gc-near);
  background: var(--gc-ink-2);
  border-color: var(--gc-line);
}

.page-home .hm-index__link.is-active {
  color: var(--gc-orange);
  border-color: rgba(255, 122, 47, .5);
  background: var(--gc-ink-2);
}

/* ---------- 通用章节 ---------- */
.page-home .hm-sec {
  position: relative;
  padding: var(--hm-sec-y) 0;
  background: var(--gc-ink);
  border-bottom: 1px solid var(--gc-line);
}

.page-home .hm-sec__head {
  max-width: 780px;
  margin-bottom: clamp(28px, 5vw, 48px);
}

.page-home .hm-sec__no {
  display: inline-block;
  margin-bottom: 14px;
  font-size: 12px;
  letter-spacing: .22em;
}

.page-home .hm-sec__title {
  margin: 0 0 16px;
  font-family: var(--gc-font-display);
  font-size: clamp(23px, 4.2vw, 36px);
  font-weight: 800;
  line-height: 1.26;
  letter-spacing: .03em;
  color: var(--gc-near);
}

.page-home .hm-sec__lede {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--gc-dust);
}

/* ---------- 更新节奏 ---------- */
.page-home .hm-log {
  list-style: none;
  margin: 0 0 32px;
  padding: 0;
  border-top: 1px solid var(--gc-line);
}

.page-home .hm-log__item {
  display: grid;
  gap: 6px 20px;
  padding: 22px 0;
  border-bottom: 1px solid var(--gc-line);
}

.page-home .hm-log__idx {
  font-size: 13px;
  letter-spacing: .18em;
  color: var(--gc-dust-dim);
}

.page-home .hm-log__name {
  margin: 0;
  font-family: var(--gc-font-display);
  font-size: 18px;
  letter-spacing: .02em;
  color: var(--gc-near);
}

.page-home .hm-log__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--gc-dust);
}

/* ---------- 内容主线 ---------- */
.page-home .hm-lines {
  border-top: 1px solid var(--gc-line);
}

.page-home .hm-line {
  padding: clamp(24px, 4vw, 38px) 0;
  border-bottom: 1px solid var(--gc-line);
}

.page-home .hm-line__row {
  align-items: start;
}

.page-home .hm-line__row > * {
  min-width: 0;
}

.page-home .hm-line__code {
  display: block;
  margin-bottom: 12px;
  font-size: 12px;
  letter-spacing: .2em;
}

.page-home .hm-line__title {
  margin: 0;
  font-family: var(--gc-font-display);
  font-size: clamp(19px, 2.6vw, 24px);
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: .02em;
  color: var(--gc-near);
}

.page-home .hm-line__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--gc-dust);
}

.page-home .hm-line__stat {
  padding: 22px 20px;
  background: var(--gc-ink-2);
  border: 2px solid var(--gc-line);
  box-shadow: 10px 10px 0 rgba(108, 76, 241, .2);
}

.page-home .hm-line__statnum {
  display: block;
  font-size: clamp(26px, 4vw, 34px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--gc-cyan);
}

.page-home .hm-line__statcap {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--gc-dust);
}

.page-home .hm-line__img {
  overflow: hidden;
  border: 2px solid var(--gc-line);
  box-shadow: 12px 12px 0 rgba(55, 214, 208, .16);
}

.page-home .hm-line__img img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-home .hm-lines__foot {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

/* ---------- 站内检索 ---------- */
.page-home .hm-search__row {
  align-items: center;
}

.page-home .hm-search__row > * {
  min-width: 0;
}

.page-home .hm-search__img {
  overflow: hidden;
  border: 2px solid var(--gc-line);
  box-shadow: -12px 12px 0 rgba(108, 76, 241, .18);
}

.page-home .hm-search__img img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-home .hm-search__copy .hm-sec__title {
  margin-bottom: 14px;
}

.page-home .hm-search__list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-home .hm-search__list li {
  padding: 16px 18px;
  background: var(--gc-ink-2);
  border-left: 3px solid var(--gc-violet);
  font-size: 15px;
  line-height: 1.8;
  color: var(--gc-dust);
}

.page-home .hm-search__list strong {
  color: var(--gc-cyan);
  font-weight: 700;
}

/* ---------- 站点数据带 ---------- */
.page-home .hm-stats {
  position: relative;
  overflow: hidden;
  padding: clamp(48px, 8vw, 88px) 0;
  background: var(--gc-ink-2);
  border-bottom: 1px solid var(--gc-line);
}

.page-home .hm-stats__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .3;
}

.page-home .hm-stats::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(8, 11, 26, .88), rgba(16, 24, 48, .95));
}

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

.page-home .hm-stats__head {
  margin-bottom: clamp(24px, 4vw, 38px);
}

.page-home .hm-stats__head .hm-sec__title {
  margin-bottom: 0;
}

.page-home .hm-stats__grid {
  margin: 0;
  display: grid;
  gap: 1px;
  background: var(--gc-line);
  border: 1px solid var(--gc-line);
}

.page-home .hm-stats__item {
  padding: 24px 20px;
  background: rgba(8, 11, 26, .8);
}

.page-home .hm-stats__item dt {
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--gc-dust);
}

.page-home .hm-stats__item dd {
  margin: 12px 0 0;
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.page-home .hm-stats__num {
  font-family: var(--gc-font-mono);
  font-size: clamp(28px, 5vw, 42px);
  font-weight: 700;
  line-height: 1;
  color: var(--gc-orange);
}

.page-home .hm-stats__unit {
  font-size: 13px;
  color: var(--gc-dust);
}

.page-home .hm-stats__foot {
  margin: 26px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--gc-dust);
}

.page-home .hm-stats__link {
  color: var(--gc-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(55, 214, 208, .45);
}

.page-home .hm-stats__link:hover {
  color: var(--gc-orange);
  border-color: var(--gc-orange);
}

/* ---------- 常见疑问 ---------- */
.page-home .hm-faq {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-home .hm-faq__item {
  display: flex;
  flex-direction: column;
  padding: 24px 22px;
  background: var(--gc-ink-2);
  border: 2px solid var(--gc-line);
  box-shadow: 10px 10px 0 rgba(8, 11, 26, .85);
  transition: border-color .25s var(--gc-ease), transform .25s var(--gc-ease);
}

.page-home .hm-faq__item:hover {
  border-color: rgba(108, 76, 241, .7);
  transform: translateY(-3px);
}

.page-home .hm-faq__item h3 {
  margin: 0 0 12px;
  font-family: var(--gc-font-display);
  font-size: 18px;
  letter-spacing: .02em;
  color: var(--gc-near);
}

.page-home .hm-faq__item p {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--gc-dust);
}

.page-home .hm-faq__link {
  margin-top: auto;
  align-self: flex-start;
  padding-bottom: 2px;
  font-size: 14px;
  color: var(--gc-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(55, 214, 208, .45);
  transition: color .2s var(--gc-ease), border-color .2s var(--gc-ease);
}

.page-home .hm-faq__link:hover,
.page-home .hm-faq__link:focus-visible {
  color: var(--gc-orange);
  border-color: var(--gc-orange);
}

.page-home .hm-help__cta {
  margin-top: 36px;
  padding: clamp(22px, 3vw, 32px);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  background: var(--gc-paper);
  color: var(--gc-paper-ink);
  border: 2px solid var(--gc-line);
  box-shadow: 12px 12px 0 rgba(255, 122, 47, .22);
}

.page-home .hm-help__ctatext p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--gc-paper-ink);
}

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

.page-home .hm-help__cta .gc-btn--ghost {
  color: var(--gc-paper-ink);
  border-color: var(--gc-paper-ink);
}

.page-home .hm-help__cta .gc-btn--ghost:hover,
.page-home .hm-help__cta .gc-btn--ghost:focus-visible {
  color: var(--gc-paper);
  background: var(--gc-paper-ink);
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-home .hm-nodes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 800px) {
  .page-home .hm-log__item {
    grid-template-columns: 56px minmax(170px, 1fr) minmax(0, 2.2fr);
    align-items: baseline;
  }

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

@media (min-width: 920px) {
  .page-home .hm-hero__grid {
    grid-template-columns: minmax(0, 5.2fr) minmax(0, 6fr);
  }

  .page-home .hm-stamp {
    right: -14px;
  }
}

@media (min-width: 1000px) {
  .page-home .hm-stats__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1020px) {
  .page-home .hm-faq {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 919px) {
  .page-home .hm-constellation {
    width: 46%;
    right: -2%;
  }

  .page-home .hm-media {
    border-radius: 120px 120px 8px 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .hm-orbit--outer,
  .page-home .hm-orbit--inner {
    animation: none;
  }

  .page-home .hm-node,
  .page-home .hm-faq__item {
    transition: none;
  }
}