.page-home {
  --home-ring: rgba(108, 75, 246, .28);
  --home-node-bg: linear-gradient(160deg, rgba(19, 26, 58, .92), rgba(11, 16, 36, .88));
  background: var(--deep-space);
  color: var(--mist-white);
  font-family: var(--font-zh);
  font-size: var(--fs-body);
  line-height: 1.75;
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-home .hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(40px, 7vw, 84px) 0 clamp(48px, 7vw, 96px);
  background:
    radial-gradient(115% 78% at 82% 4%, rgba(108, 75, 246, .30), transparent 58%),
    radial-gradient(95% 68% at 6% 0%, var(--cyan-08), transparent 60%),
    var(--deep-space);
}

.page-home .hero__layer {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.page-home .hero__bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .32;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .95), rgba(0, 0, 0, .32) 58%, transparent 90%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .95), rgba(0, 0, 0, .32) 58%, transparent 90%);
}

.page-home .hero__grid {
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: .38;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 128px 128px;
  -webkit-mask-image: radial-gradient(72% 62% at 32% 28%, #000, transparent 72%);
  mask-image: radial-gradient(72% 62% at 32% 28%, #000, transparent 72%);
}

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

.page-home .hero .breadcrumb {
  margin-bottom: clamp(28px, 4vw, 52px);
}

.page-home .hero__eyebrow {
  margin: 0 0 18px;
  font-family: var(--font-en);
  font-size: var(--fs-12);
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--ion-cyan);
}

.page-home .hero__title {
  margin: 0;
  font-size: var(--fs-display);
  font-weight: 900;
  line-height: 1.04;
  letter-spacing: -.02em;
  color: var(--mist-white);
  max-width: 20ch;
}

.page-home .hero__title em {
  display: block;
  margin-top: .22em;
  font-style: normal;
  font-weight: 700;
  font-size: .46em;
  line-height: 1.32;
  letter-spacing: 0;
  color: var(--ion-cyan);
}

.page-home .hero__lead {
  margin: clamp(22px, 3vw, 34px) 0 0;
  max-width: 60ch;
  color: var(--alloy-grey);
  font-size: var(--fs-body);
}

.page-home .hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: clamp(26px, 3.4vw, 40px);
}

.page-home .hero__actions .btn {
  flex: 0 0 auto;
}

.page-home .hero__vert {
  position: absolute;
  top: clamp(150px, 18vw, 240px);
  right: 4px;
  display: none;
  font-family: var(--font-en);
  font-size: var(--fs-12);
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--alloy-grey);
  opacity: .72;
}

.page-home .hero__chapters {
  margin-top: clamp(44px, 7vw, 88px);
  padding-top: 22px;
  border-top: 1px solid var(--line-strong);
}

.page-home .hero__chapters-label {
  margin: 0 0 10px;
  font-family: var(--font-en);
  font-size: var(--fs-12);
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--alloy-grey);
}

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

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

.page-home .chapter-list a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 14px;
  padding: 15px 2px;
  color: var(--mist-white);
  text-decoration: none;
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.page-home .chapter-list a:hover,
.page-home .chapter-list a:focus-visible {
  color: var(--ion-cyan);
  padding-left: 10px;
}

.page-home .chapter-list__num {
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  color: var(--ion-cyan);
  letter-spacing: .06em;
}

.page-home .chapter-list__name {
  font-size: var(--fs-16);
  font-weight: 700;
  min-width: 0;
}

.page-home .chapter-list__en {
  font-family: var(--font-en);
  font-size: var(--fs-12);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--alloy-grey);
  white-space: nowrap;
}

/* ---------- 星图入口 ---------- */
.page-home .entry-map {
  padding: var(--section-gap) 0;
  background: linear-gradient(180deg, var(--deep-space), var(--orbital-navy) 22%, var(--orbital-navy));
}

.page-home .entry-map__head {
  margin-bottom: clamp(28px, 4vw, 52px);
}

.page-home .img-frame {
  margin: 0;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  overflow: hidden;
  background: linear-gradient(150deg, var(--violet-16), rgba(5, 6, 14, .9));
}

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

.page-home .img-frame__caption {
  display: block;
  padding: 12px 18px;
  font-size: var(--fs-14);
  color: var(--alloy-grey);
  background: rgba(5, 6, 14, .68);
}

.page-home .star-map__art {
  margin-bottom: clamp(30px, 4.5vw, 60px);
}

.page-home .node-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(20px, 2.6vw, 30px);
}

.page-home .node {
  position: relative;
  padding: clamp(22px, 2.6vw, 32px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--home-node-bg);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-home .node::after {
  content: "";
  position: absolute;
  left: 26px;
  right: 26px;
  bottom: -1px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, transparent, var(--ion-cyan), transparent);
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
}

.page-home .node:hover,
.page-home .node:focus-within {
  transform: translateY(-6px);
  border-color: var(--cyan-16);
  box-shadow: 0 26px 60px -34px rgba(47, 227, 214, .55);
}

.page-home .node:hover::after,
.page-home .node:focus-within::after {
  opacity: 1;
}

.page-home .node__tag {
  display: inline-block;
  margin: 0 0 14px;
  padding: 4px 12px;
  border-radius: var(--r-pill);
  background: var(--violet-16);
  border: 1px solid rgba(108, 75, 246, .5);
  font-family: var(--font-en);
  font-size: var(--fs-12);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--mist-white);
}

.page-home .node__title {
  margin: 0 0 10px;
  font-size: var(--fs-20);
  font-weight: 700;
  line-height: 1.4;
}

.page-home .node__zh {
  margin: 0;
  color: var(--alloy-grey);
  font-size: var(--fs-16);
}

.page-home .node__en {
  margin: 10px 0 0;
  font-family: var(--font-en);
  font-size: var(--fs-14);
  line-height: 1.6;
  color: var(--alloy-grey);
  opacity: .62;
  transition: opacity var(--dur) var(--ease);
}

.page-home .node:hover .node__en,
.page-home .node:focus-within .node__en {
  opacity: 1;
}

.page-home .node__paths {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 12px;
}

.page-home .node__paths > div {
  display: grid;
  gap: 2px;
}

.page-home .node__paths dt {
  font-size: var(--fs-12);
  letter-spacing: .1em;
  color: var(--ion-cyan);
}

.page-home .node__paths dd {
  margin: 0;
  font-size: var(--fs-14);
  color: var(--mist-white);
}

.page-home .node__paths .node__path--legacy dt {
  color: var(--solar-gold);
}

.page-home .node__link {
  display: inline-block;
  margin-top: 18px;
  font-size: var(--fs-14);
  color: var(--ion-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-16);
  padding-bottom: 2px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-home .node__link:hover,
.page-home .node__link:focus-visible {
  color: var(--mist-white);
  border-color: var(--mist-white);
}

.page-home .upkeep {
  margin-top: clamp(36px, 5.5vw, 72px);
  padding-top: clamp(22px, 3vw, 34px);
  border-top: 1px solid var(--line-strong);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px 18px;
}

.page-home .upkeep__item {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.page-home .upkeep__num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 4vw, 38px);
  line-height: 1;
  color: var(--mist-white);
}

.page-home .upkeep__label {
  font-size: var(--fs-14);
  color: var(--alloy-grey);
}

.page-home .upkeep__link {
  grid-column: 1 / -1;
  justify-self: start;
  font-size: var(--fs-14);
  color: var(--solar-gold);
  text-decoration: none;
  border-bottom: 1px solid var(--gold-16);
  padding-bottom: 2px;
}

.page-home .upkeep__link:hover,
.page-home .upkeep__link:focus-visible {
  color: var(--mist-white);
}

/* ---------- 对比评测轨道 ---------- */
.page-home .reviews {
  padding: var(--section-gap) 0;
  background:
    radial-gradient(80% 60% at 88% 8%, var(--home-ring), transparent 62%),
    linear-gradient(180deg, var(--orbital-navy), var(--nebula-mid));
}

.page-home .reviews__inner {
  display: grid;
  gap: clamp(30px, 5vw, 56px);
  align-items: start;
}

.page-home .reviews__lead {
  margin: 0 0 clamp(20px, 3vw, 30px);
  max-width: 58ch;
  color: var(--alloy-grey);
}

.page-home .orbit-list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 22px;
  border-left: 1px solid var(--line-strong);
  display: grid;
  gap: 16px;
}

.page-home .orbit-list__item {
  position: relative;
  display: grid;
  gap: 2px;
}

.page-home .orbit-list__item::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 11px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ion-cyan);
  box-shadow: 0 0 0 4px var(--cyan-08);
}

.page-home .orbit-list__item strong {
  font-size: var(--fs-16);
  color: var(--mist-white);
}

.page-home .orbit-list__item span {
  font-size: var(--fs-14);
  color: var(--alloy-grey);
}

.page-home .reviews__accordion {
  margin-top: clamp(26px, 3.6vw, 40px);
}

.page-home .reviews__more {
  margin-top: clamp(24px, 3.4vw, 36px);
}

/* ---------- 第二栏 ---------- */
.page-home .query-band {
  position: relative;
  overflow: hidden;
  padding: var(--section-gap) 0;
  background:
    radial-gradient(70% 55% at 88% 0%, var(--violet-16), transparent 62%),
    var(--deep-space);
}

.page-home .query-band::after {
  content: "";
  position: absolute;
  right: -22%;
  bottom: -34%;
  width: min(620px, 86vw);
  aspect-ratio: 1;
  border: 1px dashed var(--line-strong);
  border-radius: 50%;
  pointer-events: none;
}

.page-home .query-band > .shell {
  position: relative;
  z-index: 1;
}

.page-home .query-band__head {
  margin-bottom: clamp(24px, 3.4vw, 40px);
}

.page-home .query-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: clamp(26px, 3.6vw, 42px);
}

.page-home .query-tabs .tabs__btn {
  display: inline-block;
  padding: 10px 20px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-strong);
  color: var(--mist-white);
  font-size: var(--fs-14);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-home .query-tabs .tabs__btn:hover,
.page-home .query-tabs .tabs__btn:focus-visible {
  border-color: var(--ion-cyan);
  color: var(--ion-cyan);
  background: var(--cyan-08);
}

.page-home .query-cols {
  display: grid;
  gap: clamp(20px, 2.6vw, 28px);
}

.page-home .query-col {
  padding: clamp(20px, 2.4vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(180deg, rgba(19, 26, 58, .78), rgba(11, 16, 36, .6));
}

.page-home .query-col__title {
  margin: 0 0 16px;
  font-size: var(--fs-20);
  font-weight: 700;
  display: grid;
  gap: 6px;
}

.page-home .query-col__title span {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .14em;
  color: var(--ion-cyan);
  font-weight: 400;
}

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

.page-home .query-item {
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.page-home .query-item__q {
  margin: 0;
  font-size: var(--fs-16);
  font-weight: 600;
  color: var(--mist-white);
}

.page-home .query-item__a {
  margin: 6px 0 0;
  font-size: var(--fs-14);
  color: var(--alloy-grey);
}

.page-home .query-item__link {
  display: inline-block;
  margin-top: 8px;
  font-size: var(--fs-14);
  color: var(--ion-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-16);
}

.page-home .query-item__link:hover,
.page-home .query-item__link:focus-visible {
  color: var(--mist-white);
  border-color: var(--mist-white);
}

/* ---------- 注册步骤 ---------- */
.page-home .steps {
  padding: var(--section-gap) 0;
  background: linear-gradient(180deg, var(--deep-space), var(--orbital-navy));
}

.page-home .steps__head {
  margin-bottom: clamp(28px, 4vw, 48px);
}

.page-home .steps__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(16px, 2vw, 22px);
}

.page-home .step {
  position: relative;
  padding: clamp(18px, 2.2vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(160deg, rgba(19, 26, 58, .72), rgba(5, 6, 14, .55));
  transition: border-color var(--dur) var(--ease);
}

.page-home .step:hover {
  border-color: var(--cyan-16);
}

.page-home .step__num {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: clamp(28px, 3.6vw, 44px);
  line-height: 1;
  color: var(--ion-cyan);
}

.page-home .step h3 {
  margin: 0 0 8px;
  font-size: var(--fs-16);
  font-weight: 700;
}

.page-home .step p {
  margin: 0;
  font-size: var(--fs-14);
  color: var(--alloy-grey);
}

.page-home .steps__art {
  margin-top: clamp(28px, 4vw, 52px);
}

.page-home .steps__more {
  margin-top: clamp(24px, 3.2vw, 36px);
}

/* ---------- 联系与备案 ---------- */
.page-home .contact-band {
  padding: var(--section-gap) 0;
  background: linear-gradient(180deg, var(--orbital-navy), var(--deep-space));
}

.page-home .contact-band__inner {
  display: grid;
  gap: clamp(28px, 4.4vw, 52px);
  align-items: start;
}

.page-home .contact-band__lead {
  margin: clamp(16px, 2.4vw, 24px) 0 clamp(20px, 2.8vw, 30px);
  max-width: 56ch;
  color: var(--alloy-grey);
}

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

.page-home .contact-list__row {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.page-home .contact-list__key {
  font-family: var(--font-en);
  font-size: var(--fs-12);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--alloy-grey);
}

.page-home .contact-list__val {
  font-size: var(--fs-16);
  color: var(--mist-white);
  overflow-wrap: anywhere;
}

.page-home .contact-card {
  padding: clamp(22px, 3vw, 32px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, var(--violet-16), rgba(19, 26, 58, .72));
}

.page-home .contact-card__badge {
  margin: 0 0 14px;
  font-family: var(--font-en);
  font-size: var(--fs-12);
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--solar-gold);
}

.page-home .contact-card dl {
  margin: 0;
}

.page-home .contact-card__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 14px;
  padding: 11px 0;
  border-bottom: 1px dashed var(--line-strong);
}

.page-home .contact-card__row:last-of-type {
  border-bottom: 0;
}

.page-home .contact-card__key {
  font-size: var(--fs-12);
  letter-spacing: .1em;
  color: var(--alloy-grey);
}

.page-home .contact-card__val {
  margin: 0;
  font-size: var(--fs-14);
  color: var(--mist-white);
  text-align: right;
}

.page-home .contact-card__note {
  margin: 16px 0 0;
  font-size: var(--fs-14);
  color: var(--alloy-grey);
}

.page-home .contact-card__btn {
  margin-top: 20px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-home .contact-list__row {
    grid-template-columns: 120px minmax(0, 1fr);
    align-items: baseline;
    gap: 16px;
  }

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

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

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

@media (min-width: 900px) {
  .page-home .hero__vert {
    display: block;
  }

  .page-home .chapter-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(24px, 4vw, 56px);
  }

  .page-home .reviews__inner {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
  }

  .page-home .query-cols {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-home .contact-band__inner {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr);
  }
}

@media (min-width: 1080px) {
  .page-home .node-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    align-items: start;
  }

  .page-home .node--web {
    grid-column: 1 / span 5;
  }

  .page-home .node--ios {
    grid-column: 7 / span 6;
    margin-top: 56px;
  }

  .page-home .node--android {
    grid-column: 3 / span 4;
    margin-top: -20px;
  }

  .page-home .node--desktop {
    grid-column: 8 / span 5;
  }

  .page-home .steps__list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .node,
  .page-home .node__en,
  .page-home .chapter-list a,
  .page-home .query-tabs .tabs__btn,
  .page-home .step {
    transition: none;
  }

  .page-home .node:hover,
  .page-home .node:focus-within {
    transform: none;
  }
}