/* ============================================================
   首页 page-home 专属样式
   作用域全部限定在 .page-home 之内
   ============================================================ */

.page-home {
  --home-gap: 72px;
  --home-rule: 1px solid var(--line-soft);
  background-color: var(--mist);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.75;
}

.page-home .section {
  padding-block: 64px;
}

.page-home .section--tight {
  padding-block: 40px;
}

/* ---------------- 01 首屏 ---------------- */

.page-home .home-open {
  position: relative;
  padding-block: 36px 72px;
  background-color: var(--pearl);
  border-bottom: 1px solid var(--line-soft);
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 56px 56px;
}

.page-home .home-open__context {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 20px;
  margin: 0 0 32px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-soft);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-home .home-open__status {
  margin-left: auto;
  color: var(--sea-700);
}

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

@media (min-width: 900px) {
  .page-home .home-open__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 56px;
    align-items: start;
  }
}

.page-home .home-open__title {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(27px, 5.4vw, 50px);
  line-height: 1.18;
  letter-spacing: -0.015em;
  color: var(--sea-900);
}

.page-home .home-open__lead {
  margin: 0 0 24px;
  max-width: 34em;
  font-size: 16px;
  color: var(--ink);
}

.page-home .home-open__points {
  margin: 0 0 28px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-home .home-open__points li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--sea-700);
}

.page-home .home-open__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 11px;
  height: 2px;
  background-color: var(--coral);
}

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

.page-home .home-open__media {
  margin: 0;
  border: 1px solid var(--line);
  background-color: var(--sea-900);
}

.page-home .home-open__media .media-frame__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-home .home-open__media .media-frame__caption {
  padding: 14px 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--mist);
  border-top: 1px solid var(--line-light);
}

/* 常驻入口 + 筛选 */

.page-home .home-open__entries {
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid var(--line-soft);
}

.page-home .home-open__entries-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 20px;
  margin-bottom: 22px;
}

.page-home .home-open__entries-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--sea-900);
}

.page-home .home-filter {
  margin-left: auto;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-home .home-filter .filter-btn {
  appearance: none;
  border: 1px solid var(--line);
  background-color: transparent;
  color: var(--sea-700);
  padding: 7px 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background-color 160ms ease, color 160ms ease, border-color 160ms ease;
}

.page-home .home-filter .filter-btn:hover {
  border-color: var(--coral);
  color: var(--coral-700);
}

.page-home .home-filter .filter-btn:focus-visible {
  outline: 2px solid var(--coral);
  outline-offset: 2px;
}

.page-home .home-filter .filter-btn[aria-pressed="true"] {
  background-color: var(--coral);
  border-color: var(--coral);
  color: var(--pearl);
}

.page-home .home-entry-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background-color: var(--line-soft);
  border: 1px solid var(--line-soft);
}

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

@media (min-width: 1024px) {
  .page-home .home-entry-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-home .home-entry {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 22px 20px 24px;
  background-color: var(--pearl);
  color: var(--ink);
  text-decoration: none;
  transition: background-color 160ms ease, color 160ms ease;
}

.page-home .home-entry:hover,
.page-home .home-entry:focus-visible {
  background-color: var(--sea-900);
  color: var(--pearl);
  outline: none;
}

.page-home .home-entry:hover .home-entry__index,
.page-home .home-entry:focus-visible .home-entry__index {
  color: var(--gold);
}

.page-home .home-entry:hover .home-entry__desc,
.page-home .home-entry:focus-visible .home-entry__desc {
  color: rgba(232, 238, 242, 0.78);
}

.page-home .home-entry__index {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--coral);
}

.page-home .home-entry__title {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  line-height: 1.42;
}

.page-home .home-entry__desc {
  font-size: 13px;
  line-height: 1.65;
  color: var(--slate);
}

.page-home .home-entry.is-out {
  display: none;
}

.page-home .filter-empty {
  margin: 18px 0 0;
  padding: 16px 20px;
  border: 1px dashed var(--line);
  font-size: 14px;
  color: var(--slate);
}

/* ---------------- 02 设置分组 ---------------- */

.page-home .home-settings {
  background-color: var(--mist);
}

.page-home .home-settings__head {
  max-width: 46em;
  margin-bottom: 40px;
}

.page-home .home-settings__head .section-index {
  color: var(--coral-700);
}

.page-home .home-settings__board {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  background-color: var(--sea-900);
}

.page-home .home-settings__texture {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
  filter: saturate(0.72);
  pointer-events: none;
}

.page-home .home-settings__list {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
}

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

@media (min-width: 1024px) {
  .page-home .home-settings__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-home .home-setting {
  padding: 28px 24px 32px;
  border-bottom: 1px solid var(--line-light);
  color: var(--pearl);
}

@media (min-width: 640px) {
  .page-home .home-setting {
    border-right: 1px solid var(--line-light);
  }
  .page-home .home-setting:nth-child(2n) {
    border-right: none;
  }
}

@media (min-width: 1024px) {
  .page-home .home-setting:nth-child(2n) {
    border-right: 1px solid var(--line-light);
  }
  .page-home .home-setting:nth-child(3n) {
    border-right: none;
  }
}

.page-home .home-setting__num {
  display: block;
  margin-bottom: 16px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-home .home-setting__name {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--pearl);
}

.page-home .home-setting__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(232, 238, 242, 0.76);
}

/* ---------------- 通栏影像 ---------------- */

.page-home .home-banner-wrap {
  background-color: var(--mist);
}

.page-home .home-banner {
  margin: 0;
  border: 1px solid var(--line-soft);
  background-color: var(--sea-700);
}

.page-home .home-banner .media-frame__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-home .home-banner .media-frame__caption {
  padding: 14px 22px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--mist);
  background-color: var(--sea-900);
}

/* ---------------- 03 换设备 ---------------- */

.page-home .home-sync {
  background-color: var(--pearl);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

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

@media (min-width: 900px) {
  .page-home .home-sync__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 56px;
    align-items: start;
  }
}

.page-home .home-sync__main .section-index {
  color: var(--coral-700);
}

.page-home .home-sync__main .overview {
  margin-top: 28px;
}

.page-home .home-sync__steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background-color: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-home .home-sync__step {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 18px 20px;
  background-color: var(--pearl);
}

.page-home .home-sync__step-num {
  font-size: 13px;
  font-weight: 500;
  color: var(--coral);
}

.page-home .home-sync__step-text {
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

/* ---------------- 04 规则与版本 ---------------- */

.page-home .home-ledger {
  background-color: var(--mist);
}

.page-home .home-ledger__head {
  max-width: 48em;
  margin-bottom: 40px;
}

.page-home .home-ledger__head .section-index {
  color: var(--coral-700);
}

.page-home .home-ledger__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  margin-bottom: 48px;
}

@media (min-width: 900px) {
  .page-home .home-ledger__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: start;
  }
}

.page-home .home-ledger__rules {
  margin: 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--line);
  border-top: 3px solid var(--coral);
  background-color: var(--pearl);
}

.page-home .home-ledger__rule {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 14px;
  padding: 20px 22px;
  border-bottom: 1px solid var(--line-soft);
}

.page-home .home-ledger__rule:last-child {
  border-bottom: none;
}

.page-home .home-ledger__rule-num {
  padding-top: 2px;
  font-size: 13px;
  color: var(--coral-700);
}

.page-home .home-ledger__rule-title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--sea-900);
}

.page-home .home-ledger__rule-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--slate);
}

.page-home .home-ledger__media {
  margin: 0;
}

.page-home .home-ledger__media .detail-zoom__image {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line);
}

.page-home .home-ledger__media .detail-zoom__caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
}

.page-home .home-timeline {
  margin-top: 8px;
  padding: 36px 24px 24px;
  border: 1px solid var(--line-soft);
  background-color: var(--pearl);
  overflow-x: auto;
}

.page-home .home-timeline .timeline__track {
  min-width: 520px;
}

.page-home .home-timeline .timeline__version {
  font-size: 15px;
  font-weight: 500;
  color: var(--sea-700);
}

.page-home .home-timeline .timeline__node--active .timeline__version {
  color: var(--coral-700);
}

.page-home .home-timeline .timeline__label {
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--slate);
}

/* ---------------- 05 品牌专区 ---------------- */

.page-home .home-topics {
  background-color: var(--sea-900);
  color: var(--pearl);
}

.page-home .home-topics__head {
  max-width: 50em;
  margin-bottom: 40px;
}

.page-home .home-topics .section-index {
  color: var(--gold);
}

.page-home .home-topics .section-title {
  color: var(--pearl);
}

.page-home .home-topics .section-lead {
  color: rgba(232, 238, 242, 0.76);
}

.page-home .home-topics__rail {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(250px, 1fr);
  gap: 1px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  border: 1px solid var(--line-light);
  background-color: var(--line-light);
}

@media (min-width: 900px) {
  .page-home .home-topics__rail {
    grid-auto-columns: minmax(280px, 1fr);
  }
}

.page-home .home-topic {
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 210px;
  padding: 28px 24px 32px;
  background-color: var(--sea-700);
  transition: background-color 200ms ease;
}

.page-home .home-topic:hover {
  background-color: var(--sea-500);
}

.page-home .home-topic__num {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-home .home-topic__name {
  margin: 0;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--pearl);
}

.page-home .home-topic__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: rgba(232, 238, 242, 0.74);
}

/* ---------------- 06 服务通道 ---------------- */

.page-home .home-service {
  background-color: var(--mist);
}

.page-home .home-service__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

@media (min-width: 900px) {
  .page-home .home-service__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 56px;
    align-items: start;
  }
}

.page-home .home-service .section-index {
  color: var(--coral-700);
}

.page-home .home-service__channels {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-soft);
}

.page-home .home-channel {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
}

@media (min-width: 560px) {
  .page-home .home-channel {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
}

.page-home .home-channel__key {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-home .home-channel__value {
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
  overflow-wrap: break-word;
  word-break: break-word;
}

.page-home .home-channel__value a {
  color: var(--sea-700);
  text-decoration: underline;
  text-decoration-color: var(--coral);
  text-underline-offset: 4px;
}

.page-home .home-channel__value a:hover {
  color: var(--coral-700);
}

.page-home .home-service__more {
  margin: 24px 0 0;
}

.page-home .home-service__topics {
  padding: 28px 26px 30px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--coral);
  background-color: var(--pearl);
}

.page-home .home-service__topics-title {
  margin: 0 0 22px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--sea-900);
}

.page-home .home-service__topic {
  display: block;
  padding: 16px 0;
  border-top: 1px solid var(--line-soft);
  text-decoration: none;
  color: var(--ink);
}

.page-home .home-service__topic:first-of-type {
  padding-top: 0;
  border-top: none;
}

.page-home .home-service__topic-name {
  display: block;
  font-size: 15px;
  font-weight: 700;
  color: var(--sea-700);
  transition: color 160ms ease;
}

.page-home .home-service__topic-note {
  display: block;
  margin-top: 5px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--slate);
}

.page-home .home-service__topic:hover .home-service__topic-name,
.page-home .home-service__topic:focus-visible .home-service__topic-name {
  color: var(--coral-700);
}

.page-home .home-service__topic:focus-visible {
  outline: 2px solid var(--coral);
  outline-offset: 3px;
}

/* ---------------- 回到顶部入口 ---------------- */

.page-home .dock-return {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 40;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 16px;
  background-color: var(--sea-900);
  border: 1px solid var(--coral);
  color: var(--pearl);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-decoration: none;
  transition: background-color 160ms ease, color 160ms ease;
}

.page-home .dock-return:hover,
.page-home .dock-return:focus-visible {
  background-color: var(--coral);
  color: var(--pearl);
  outline: none;
}

.page-home .dock-return__icon {
  font-size: 14px;
  line-height: 1;
}

@media (max-width: 520px) {
  .page-home .dock-return__text {
    display: none;
  }
  .page-home .dock-return {
    padding: 12px 14px;
  }
}

/* ---------------- 动效 ---------------- */

.page-home .reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 180ms ease-out, transform 180ms ease-out;
}

.page-home .reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .page-home .reveal,
  .page-home .reveal.is-visible {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .page-home .home-entry,
  .page-home .home-topic,
  .page-home .dock-return {
    transition: none;
  }
}

/* ---------------- 窄屏细节 ---------------- */

@media (max-width: 640px) {
  .page-home .section {
    padding-block: 48px;
  }

  .page-home .section--tight {
    padding-block: 28px;
  }

  .page-home .home-filter {
    margin-left: 0;
    width: 100%;
  }

  .page-home .home-open__actions .btn {
    width: 100%;
    text-align: center;
  }

  .page-home .home-timeline {
    padding-inline: 16px;
  }
}