/* ============ 首页 · page-home ============ */
.page-home {
  --home-gap: clamp(20px, 4vw, 32px);
  --home-cut: 72px;
  --home-card-bg: linear-gradient(180deg, rgba(27, 58, 107, .62), rgba(27, 58, 107, .28));
  background: var(--deep);
  color: var(--text);
  overflow-x: hidden;
}

.page-home .section {
  padding: clamp(64px, 8vw, 108px) 0;
}

.page-home .section--deep {
  background: var(--deep-2);
}

/* ---------- 章节头：编号落在栏外左侧 ---------- */
.page-home .chapter__head {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: clamp(32px, 4vw, 48px);
}

.page-home .chapter__index {
  color: var(--purple-soft);
}

.page-home .chapter__title {
  margin: 0;
  font-size: clamp(24px, 3.2vw, 34px);
  font-weight: 700;
  letter-spacing: .06em;
  line-height: 1.3;
  max-width: 22em;
}

.page-home .chapter__band {
  height: 3px;
  width: 84px;
  background: linear-gradient(90deg, var(--purple), rgba(108, 74, 182, 0));
}

.page-home .section__lede {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.75;
  max-width: 44em;
}

/* ---------- 首屏 ---------- */
.page-home .hero {
  position: relative;
  overflow: hidden;
  padding: clamp(56px, 8vw, 104px) 0 calc(clamp(72px, 9vw, 120px) + 40px);
  background:
    radial-gradient(120% 92% at 88% 8%, rgba(108, 74, 182, .30), rgba(11, 27, 58, 0) 62%),
    linear-gradient(180deg, var(--deep-2) 0%, var(--deep) 58%, var(--night) 100%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--home-cut)), 0 100%);
}

.page-home .hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(147, 166, 198, .18) 1px, rgba(11, 27, 58, 0) 1px);
  background-size: 24px 24px;
  opacity: .45;
  pointer-events: none;
}

.page-home .hero__bg {
  position: absolute;
  top: -8%;
  right: -12%;
  width: min(760px, 94%);
  height: auto;
  max-width: none;
  object-fit: cover;
  opacity: .34;
  z-index: 0;
  pointer-events: none;
  -webkit-mask-image: radial-gradient(72% 68% at 62% 42%, #000 32%, rgba(0, 0, 0, 0) 78%);
  mask-image: radial-gradient(72% 68% at 62% 42%, #000 32%, rgba(0, 0, 0, 0) 78%);
}

.page-home .hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(32px, 5vw, 56px);
  align-items: start;
}

.page-home .hero__kicker {
  color: var(--cyan);
  margin: 0 0 18px;
}

.page-home .hero__title {
  margin: 0 0 20px;
  font-size: clamp(30px, 5.6vw, 56px);
  font-weight: 700;
  letter-spacing: .08em;
  line-height: 1.18;
}

.page-home .hero__title em {
  display: block;
  font-style: normal;
  color: var(--gold);
}

.page-home .hero__lede {
  margin: 0 0 26px;
  max-width: 34em;
  color: var(--text);
  font-size: 17px;
  line-height: 1.75;
}

.page-home .hero__marks {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--muted);
  font-size: 14px;
}

.page-home .hero__marks .coord {
  font-size: 20px;
  font-weight: 600;
  margin-right: 6px;
}

/* ---------- 首屏检索面板 ---------- */
.page-home .hero__panel {
  position: relative;
  padding: clamp(20px, 3vw, 30px);
  background: var(--home-card-bg);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-soft);
}

.page-home .hero__panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 88px;
  height: 3px;
  background: var(--gold);
}

.page-home .quick-search__lead {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
}

.page-home .field__label {
  display: block;
  margin-bottom: 8px;
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--purple-soft);
}

.page-home .field__input {
  width: 100%;
  box-sizing: border-box;
  padding: 14px 16px;
  font: inherit;
  font-size: 15px;
  color: var(--text);
  background: rgba(5, 13, 31, .62);
  border: 1px solid var(--line-strong);
  border-radius: 0;
  outline: none;
}

.page-home .field__input::placeholder {
  color: rgba(147, 166, 198, .72);
}

.page-home .field__input:focus-visible {
  border-color: var(--cyan);
  outline: 2px solid var(--cyan);
  outline-offset: 1px;
}

.page-home .quick-search__hint {
  margin: 10px 0 0;
  color: var(--muted);
  letter-spacing: .02em;
}

.page-home .quick-search__empty {
  margin: 14px 0 0;
  padding: 12px 14px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  border: 1px dashed var(--line-strong);
}

.page-home .quick-search__empty[hidden] {
  display: none;
}

.page-home .result-list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-home .result-list__item {
  border-bottom: 1px solid var(--line);
}

.page-home .result-list__link {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 14px;
  padding: 12px 2px;
  text-decoration: none;
  color: var(--text);
}

.page-home .result-list__code {
  grid-column: 1 / -1;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--purple-soft);
}

.page-home .result-list__text {
  font-size: 15px;
  line-height: 1.55;
}

.page-home .result-list__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  align-self: center;
  white-space: nowrap;
}

.page-home .result-list__link:hover .result-list__text,
.page-home .result-list__link:focus-visible .result-list__text {
  color: var(--gold);
}

/* ---------- 01 横向资料带 ---------- */
.page-home .rail-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--home-gap);
  align-items: start;
  margin-bottom: clamp(28px, 4vw, 44px);
}

.page-home .media-frame {
  margin: 0;
}

.page-home .media-frame__body {
  position: relative;
  width: 100%;
  overflow: hidden;
  background: rgba(27, 58, 107, .34);
  border: 1px solid var(--line-strong);
}

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

.page-home .media-frame__caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.page-home .rail {
  display: flex;
  gap: 18px;
  width: 100%;
  box-sizing: border-box;
  padding: 4px var(--gutter) 22px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  scroll-padding-inline: var(--gutter);
  -webkit-overflow-scrolling: touch;
}

.page-home .rail:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-home .rail-card {
  flex: 0 0 auto;
  width: clamp(238px, 74vw, 312px);
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 20px 24px;
  background: var(--home-card-bg);
  border: 1px solid var(--line);
  border-left: 2px solid var(--track);
  transition: transform 240ms var(--ease), border-color 240ms var(--ease);
}

.page-home .rail-card:hover {
  transform: translateY(-4px);
  border-color: var(--cyan);
  border-left-color: var(--gold);
}

.page-home .rail-card__code {
  margin: 0;
  color: var(--gold);
}

.page-home .rail-card__title {
  margin: 0;
  font-size: 20px;
  font-weight: 600;
  letter-spacing: .02em;
}

.page-home .rail-card__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

.page-home .rail-card__link {
  margin-top: auto;
  font-size: 14px;
  color: var(--purple-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-home .rail-card__link:hover,
.page-home .rail-card__link:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.page-home .rail-card--end {
  background: linear-gradient(180deg, rgba(108, 74, 182, .34), rgba(27, 58, 107, .22));
  border-left-color: var(--purple);
}

/* ---------- 02 迭代记录 ---------- */
.page-home .updates__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(32px, 5vw, 56px);
  align-items: start;
}

.page-home .timeline {
  margin: 0;
  padding: 0 0 0 26px;
  list-style: none;
  border-left: 1px solid var(--line-strong);
}

.page-home .timeline__item {
  position: relative;
  padding: 0 0 clamp(26px, 3vw, 36px);
}

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

.page-home .timeline__item::before {
  content: "";
  position: absolute;
  left: calc(-26px - 5px);
  top: 6px;
  width: 9px;
  height: 9px;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(77, 208, 225, .14);
}

.page-home .timeline__time {
  margin: 0 0 8px;
  color: var(--purple-soft);
}

.page-home .timeline__title {
  margin: 0 0 8px;
  font-size: 19px;
  font-weight: 600;
  letter-spacing: .02em;
  line-height: 1.5;
}

.page-home .timeline__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.page-home .updates__facts {
  margin: 22px 0 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-home .updates__facts > div {
  padding: 14px 12px;
  background: var(--deep);
}

.page-home .updates__facts dt {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--muted);
}

.page-home .updates__facts dd {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 600;
  color: var(--gold);
}

/* ---------- 03 帮助与排查 ---------- */
.page-home .help-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-home .help-card {
  display: block;
  padding: 24px 22px 26px;
  background: var(--home-card-bg);
  border: 1px solid var(--line);
  text-decoration: none;
  color: var(--text);
  transition: transform 240ms var(--ease), border-color 240ms var(--ease);
}

.page-home .help-card:hover,
.page-home .help-card:focus-visible {
  transform: translateY(-4px);
  border-color: var(--cyan);
}

.page-home .help-card__num {
  display: block;
  margin-bottom: 12px;
  color: var(--purple-soft);
}

.page-home .help-card__title {
  margin: 0 0 10px;
  font-size: 19px;
  font-weight: 600;
  letter-spacing: .02em;
}

.page-home .help-card__text {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

.page-home .help-card__link {
  font-size: 14px;
  color: var(--gold);
  border-bottom: 1px solid var(--line-strong);
}

.page-home .help-note {
  margin: clamp(24px, 3vw, 34px) 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--purple);
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 04 品牌动态 ---------- */
.page-home .digest__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 48px);
  align-items: start;
}

.page-home .digest__list {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-home .digest__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.page-home .digest__period {
  color: var(--purple-soft);
}

.page-home .digest__title {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
}

.page-home .digest__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-home .digest__aside {
  padding: 26px 22px 28px;
  background: linear-gradient(160deg, rgba(108, 74, 182, .34), rgba(18, 39, 79, .6));
  border: 1px solid var(--line-strong);
}

.page-home .digest__aside-title {
  margin: 0 0 12px;
  font-size: 20px;
  font-weight: 600;
  letter-spacing: .04em;
}

.page-home .digest__aside-text {
  margin: 0 0 20px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
}

.page-home .digest__aside-note {
  margin: 16px 0 0;
  color: var(--muted);
}

/* ---------- 05 服务与响应 ---------- */
.page-home .service__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
}

.page-home .service__text {
  margin: 20px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 40em;
}

.page-home .service__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 28px 0 30px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-home .service__stat {
  padding: 18px 16px;
  background: var(--deep);
}

.page-home .service__stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--gold);
}

.page-home .service__stat-label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 收束 ---------- */
.page-home .closing {
  padding: clamp(60px, 7vw, 96px) 0 clamp(64px, 8vw, 104px);
  background:
    radial-gradient(90% 120% at 12% 0%, rgba(108, 74, 182, .30), rgba(5, 13, 31, 0) 62%),
    var(--night);
}

.page-home .closing__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
  align-items: center;
}

.page-home .closing__title {
  margin: 0 0 14px;
  font-size: clamp(24px, 3.4vw, 34px);
  font-weight: 700;
  letter-spacing: .06em;
  line-height: 1.35;
}

.page-home .closing__text {
  margin: 0;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}

.page-home .closing__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-home .help-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
  }

  .page-home .help-grid > :nth-child(2) {
    transform: translateY(26px);
  }

  .page-home .help-grid > :nth-child(4) {
    transform: translateY(26px);
  }

  .page-home .help-grid > :nth-child(2):hover,
  .page-home .help-grid > :nth-child(4):hover,
  .page-home .help-grid > :nth-child(2):focus-visible,
  .page-home .help-grid > :nth-child(4):focus-visible {
    transform: translateY(22px);
  }

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

  .page-home .digest__item {
    grid-template-columns: 96px 1fr;
    gap: 6px 18px;
  }

  .page-home .digest__text {
    grid-column: 2;
  }
}

@media (min-width: 960px) {
  .page-home .chapter__head {
    grid-template-columns: 96px 1fr;
    column-gap: 26px;
    align-items: start;
  }

  .page-home .chapter__index {
    grid-row: span 2;
    writing-mode: vertical-rl;
    letter-spacing: .24em;
    padding-top: 4px;
  }

  .page-home .chapter__band {
    grid-column: 2;
  }

  .page-home .hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .92fr);
    gap: clamp(40px, 5vw, 72px);
  }

  .page-home .rail-head {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: end;
  }

  .page-home .updates__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  }

  .page-home .digest__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, .65fr);
  }

  .page-home .service__grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
  }

  .page-home .closing__inner {
    grid-template-columns: minmax(0, 1.4fr) auto;
  }
}

@media (min-width: 1200px) {
  .page-home .rail-card {
    width: 300px;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-home .rail-card,
  .page-home .help-card {
    transition: none;
  }

  .page-home .rail-card:hover,
  .page-home .help-card:hover,
  .page-home .help-grid > :nth-child(2):hover,
  .page-home .help-grid > :nth-child(4):hover {
    transform: none;
  }
}