.page-home {
  --home-line: #2A3C5A;
  --home-line-soft: rgba(42, 60, 90, 0.5);
  --home-dark: rgba(14, 23, 38, 0.72);
  position: relative;
  background-color: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  overflow-x: clip;
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-home::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--home-line-soft) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(42, 60, 90, 0.34) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.55;
}

.page-home > * {
  position: relative;
  z-index: 1;
}

.page-home .mono {
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.page-home a {
  color: inherit;
  text-decoration: none;
}

/* ---------- 首屏 ---------- */
.home-hero {
  padding-top: clamp(20px, 3vw, 34px);
  padding-bottom: clamp(34px, 5vw, 60px);
}

.home-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 4vw, 40px);
  align-items: start;
}

.home-hero__eyebrow {
  margin: 0 0 16px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--jade);
  padding-left: 14px;
  border-left: 3px solid var(--jade);
}

.home-hero__title {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(31px, 6.6vw, 56px);
  line-height: 1.16;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.home-hero__lede {
  max-width: 34em;
  margin: 0 0 26px;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.9;
  color: var(--muted);
}

.home-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}

.home-hero__jump {
  display: inline-block;
  font-size: 12.5px;
  color: var(--gold);
  border-bottom: 1px dashed rgba(217, 168, 74, 0.5);
  padding-bottom: 3px;
}

.home-hero__visual {
  position: relative;
}

.home-hero__visual img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  max-height: 520px;
  object-fit: cover;
  border: 1px solid var(--home-line);
  box-shadow: var(--shadow-brut);
  background-color: var(--ink-panel);
}

.home-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 20px;
  margin: clamp(28px, 4.4vw, 46px) 0 0;
  padding: clamp(18px, 3vw, 26px) 0 0;
  list-style: none;
  border-top: 1px solid var(--home-line);
}

.home-fact {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.home-fact__num {
  font-size: clamp(24px, 3.6vw, 34px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--gold);
}

.home-fact__label {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
}

/* ---------- 变更主题带 ---------- */
.home-changes {
  padding-block: clamp(38px, 5.5vw, 72px);
}

.home-changes .section-head {
  margin-bottom: clamp(22px, 3.4vw, 36px);
}

.home-changes__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--home-line);
}

.change-band {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--home-line);
  background: linear-gradient(90deg, rgba(22, 35, 58, 0.85) 0%, rgba(14, 23, 38, 0.25) 78%);
  transition: background-color var(--dur) var(--ease);
}

.change-band::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 3px;
  background-color: var(--jade);
  transform: translateX(-3px);
  transition: transform var(--dur) var(--ease);
}

.change-band:hover::before,
.change-band:focus-within::before {
  transform: translateX(0);
}

.change-band--media {
  background-color: var(--ink-panel);
}

.change-band__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
  z-index: 0;
}

.change-band__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 10px;
  max-width: var(--shell-w);
  margin: 0 auto;
  padding: clamp(22px, 3.4vw, 34px) var(--gutter);
}

.change-band__num {
  font-size: 13px;
  color: var(--gold);
  letter-spacing: 0.14em;
}

.change-band__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 2.6vw, 25px);
  line-height: 1.35;
  color: var(--paper);
}

.change-band__text {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.change-band__link {
  justify-self: start;
  font-size: 14px;
  color: var(--jade);
  border-bottom: 1px solid rgba(63, 191, 175, 0.45);
  padding-bottom: 2px;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.change-band__link:hover,
.change-band__link:focus-visible {
  color: var(--paper);
  border-color: var(--paper);
}

/* ---------- 账户中心 ---------- */
.home-center {
  padding-block: clamp(40px, 6vw, 78px);
}

.home-center__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.4vw, 40px);
}

.home-center__figure {
  margin: 22px 0 0;
}

.home-center__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--home-line);
  background-color: var(--ink-panel);
}

.home-center__note {
  margin: 16px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
  padding-left: 14px;
  border-left: 2px solid var(--home-line);
}

.center-block {
  display: grid;
  gap: 10px;
  padding: clamp(18px, 2.6vw, 26px);
  border: 1px solid var(--home-line);
  border-left-width: 4px;
  background-color: var(--ink-panel);
}

.center-block + .center-block {
  margin-top: 14px;
}

.center-block--jade {
  border-left-color: var(--jade);
}

.center-block--gold {
  border-left-color: var(--gold);
}

.center-block--cinnabar {
  border-left-color: var(--cinnabar);
}

.center-block__num {
  font-size: 12.5px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.center-block__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(18px, 2.4vw, 23px);
  line-height: 1.4;
  color: var(--paper);
}

.center-block__text {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.center-block__tip {
  margin: 0;
  font-size: 12.5px;
  color: var(--gold);
  padding-top: 8px;
  border-top: 1px dashed var(--home-line);
}

.center-block__link {
  justify-self: start;
  font-size: 14px;
  color: var(--jade);
  border-bottom: 1px solid rgba(63, 191, 175, 0.45);
  padding-bottom: 2px;
}

.center-block__link:hover,
.center-block__link:focus-visible {
  color: var(--paper);
  border-color: var(--paper);
}

/* ---------- 双端 ---------- */
.home-devices {
  padding-block: clamp(40px, 6vw, 78px);
  border-top: 1px solid var(--home-line);
  background: linear-gradient(180deg, rgba(22, 35, 58, 0.6) 0%, rgba(14, 23, 38, 0) 60%);
}

.home-devices__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.6vw, 42px);
  align-items: start;
}

.home-devices__figure {
  margin: 0;
}

.home-devices__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--home-line);
  box-shadow: var(--shadow-brut);
  background-color: var(--ink-panel);
}

.home-devices__figure figcaption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

.home-devices__lede {
  margin: 16px 0 22px;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.9;
  color: var(--muted);
}

.device-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.device-tab {
  display: inline-block;
  padding: 7px 14px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--paper);
  border: 1px solid var(--home-line);
  background-color: var(--ink-panel);
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.device-tab:hover,
.device-tab:focus-visible {
  border-color: var(--jade);
  color: var(--jade);
}

.device-panels {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.device-panel {
  padding: 18px 18px 20px;
  border: 1px solid var(--home-line);
  background-color: var(--ink-panel);
  transition: box-shadow var(--dur) var(--ease);
}

.device-panel--mobile {
  border-top: 3px solid var(--jade);
}

.device-panel--desktop {
  border-top: 3px solid var(--ink);
  background-color: var(--panel-light);
  color: var(--ink);
}

.device-panel:target {
  box-shadow: var(--shadow-brut);
}

.device-panel__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.4;
  color: var(--paper);
}

.device-panel--desktop .device-panel__title {
  color: var(--ink);
}

.device-panel__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}

.device-panel__list li {
  position: relative;
  padding-left: 16px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

.device-panel--desktop .device-panel__list li {
  color: rgba(14, 23, 38, 0.78);
}

.device-panel__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 6px;
  background-color: var(--jade);
}

.device-panel--desktop .device-panel__list li::before {
  background-color: var(--cinnabar);
}

.device-note {
  margin: 18px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--gold);
  padding-left: 14px;
  border-left: 2px solid var(--gold);
}

/* ---------- 更新索引 ---------- */
.home-updates {
  padding-block: clamp(40px, 6vw, 78px);
}

.home-updates__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.4vw, 38px);
  margin-top: clamp(22px, 3vw, 32px);
}

.home-updates__col-title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  color: var(--paper);
}

.home-updates__col-title .mono {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold);
  border: 1px solid var(--home-line);
  padding: 2px 7px;
}

.update-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--home-line);
}

.update-row {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 10px;
  padding: 14px 0;
  border-bottom: 1px solid var(--home-line);
}

.update-row__num {
  font-size: 12.5px;
  color: var(--muted);
  padding-top: 3px;
}

.update-row__title {
  margin: 0 0 3px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--paper);
}

.update-row__meta {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.update-row__meta .tag {
  margin-left: 6px;
  vertical-align: 1px;
}

.home-updates__more {
  display: inline-block;
  margin-top: 16px;
  font-size: 14px;
  color: var(--jade);
  border-bottom: 1px solid rgba(63, 191, 175, 0.45);
  padding-bottom: 2px;
}

.home-updates__more:hover,
.home-updates__more:focus-visible {
  color: var(--paper);
  border-color: var(--paper);
}

/* ---------- 联络 ---------- */
.home-contact {
  padding-block: clamp(34px, 5vw, 64px);
}

.home-contact__panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.4vw, 38px);
  padding: clamp(22px, 4vw, 40px);
  border: 2px solid var(--cinnabar);
  background-color: var(--ink-panel);
  box-shadow: var(--shadow-brut);
}

.home-contact__title {
  margin: 8px 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 3vw, 29px);
  line-height: 1.35;
  color: var(--paper);
}

.home-contact__text {
  margin: 0 0 20px;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--muted);
}

.home-contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.home-contact__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  align-content: start;
}

.contact-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 14px 0;
  border-top: 1px solid var(--home-line);
}

.contact-item:first-child {
  border-top: 0;
  padding-top: 0;
}

.contact-item__label {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.contact-item__value {
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper);
  word-break: break-word;
}

.contact-item .copy-btn {
  justify-self: start;
  margin-top: 4px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-home {
    font-size: 16.5px;
  }

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

  .device-panels {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .home-contact__panel {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .home-hero__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: clamp(28px, 3.6vw, 48px);
  }

  .home-hero__copy {
    padding-right: clamp(12px, 2vw, 28px);
  }

  .home-hero__visual {
    position: sticky;
    top: 96px;
    padding-left: clamp(16px, 2.4vw, 30px);
    border-left: 1px solid var(--home-line);
  }

  .home-hero__visual img {
    max-height: none;
  }

  .change-band__inner {
    grid-template-columns: 70px minmax(0, 230px) minmax(0, 1fr) auto;
    align-items: center;
    gap: 12px 26px;
  }

  .change-band__num {
    align-self: start;
  }

  .home-center__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  }

  .home-center__aside {
    position: sticky;
    top: 96px;
    align-self: start;
  }

  .home-devices__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(28px, 3.6vw, 48px);
  }

  .home-updates__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .contact-item {
    grid-template-columns: 96px minmax(0, 1fr);
    align-items: baseline;
    gap: 4px 14px;
  }

  .contact-item .copy-btn {
    grid-column: 2;
  }
}

/* 设备聚焦：点击标签后只看其中一端，未选择时两端并列 */
.page-home .device-switch:has(#device-mobile:target) .device-panel--desktop,
.page-home .device-switch:has(#device-desktop:target) .device-panel--mobile {
  display: none;
}

@media (prefers-reduced-motion: reduce) {
  .page-home *,
  .page-home *::before,
  .page-home *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}