/* ===== 首页专属样式 · 作用域限定 .page-home ===== */

.page-home {
  --hero-media-min-h: 26rem;
  --section-pad: 2.5rem 1.25rem;
}

.page-home section[id] {
  scroll-margin-top: 1.5rem;
}

/* ---------- 首屏：春季左右分屏 ---------- */

.page-home .home-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  background: var(--color-ink);
  color: var(--color-paper);
  overflow: hidden;
}

.page-home .home-hero__media {
  position: relative;
  min-height: var(--hero-media-min-h);
  overflow: hidden;
  isolation: isolate;
}

.page-home .home-hero__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -2;
}

.page-home .home-hero__overlay {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(16, 19, 18, 0.08) 0%, rgba(16, 19, 18, 0.42) 55%, rgba(16, 19, 18, 0.84) 100%);
}

.page-home .home-hero__season {
  position: absolute;
  top: 0.75rem;
  right: 1rem;
  z-index: 2;
  font-family: var(--font-serif);
  font-size: 3.25rem;
  line-height: 1;
  color: rgba(244, 242, 235, 0.82);
  border: 1px solid rgba(244, 242, 235, 0.4);
  padding: 0.6rem 0.75rem;
}

.page-home .home-hero__headline {
  position: relative;
  z-index: 2;
  padding: 2rem 1.25rem 1.5rem;
}

.page-home .home-hero__meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.page-home .home-hero__no {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--color-fog);
}

.page-home .home-hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 8vw, 3.4rem);
  line-height: 1.2;
  margin: 0 0 1rem;
  letter-spacing: 0.02em;
}

.page-home .home-hero__dot {
  color: var(--color-spring);
}

.page-home .home-hero__desc {
  margin: 0 0 0.65rem;
  font-size: 0.92rem;
  line-height: 1.75;
  color: rgba(244, 242, 235, 0.82);
  max-width: 34rem;
}

.page-home .home-hero__body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 1.75rem 1.25rem 2.5rem;
  background: var(--color-ink);
}

.page-home .home-hero__search {
  display: flex;
  align-items: stretch;
  border: 1px solid rgba(244, 242, 235, 0.32);
  background: rgba(244, 242, 235, 0.06);
  margin-bottom: 1.5rem;
}

.page-home .home-hero__search-icon {
  width: 1.1rem;
  height: 1.1rem;
  border: 1.5px solid var(--color-fog);
  border-radius: 50%;
  position: relative;
  flex-shrink: 0;
  margin-left: 0.9rem;
  align-self: center;
}

.page-home .home-hero__search-icon::after {
  content: "";
  position: absolute;
  width: 0.55rem;
  height: 1px;
  background: var(--color-fog);
  transform: rotate(45deg);
  right: -0.42rem;
  top: 0.85rem;
}

.page-home .home-hero__search-input {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: 0;
  outline: none;
  padding: 0.8rem 0.75rem;
  color: var(--color-paper);
  font-family: var(--font-sans);
  font-size: 0.92rem;
}

.page-home .home-hero__search-input::placeholder {
  color: var(--color-fog);
}

.page-home .home-hero__search-clear {
  border: 0;
  background: transparent;
  color: var(--color-fog);
  cursor: pointer;
  padding: 0 0.9rem;
  font-size: 0.82rem;
  font-family: var(--font-sans);
}

.page-home .home-hero__quickindex {
  border-top: 1px solid rgba(244, 242, 235, 0.2);
}

.page-home .home-hero__quick {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid rgba(244, 242, 235, 0.2);
  color: rgba(244, 242, 235, 0.9);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.page-home .home-hero__quick:hover {
  color: var(--color-spring);
  padding-left: 0.4rem;
}

.page-home .home-hero__stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.85rem;
  margin: 1.5rem 0 0;
}

.page-home .home-hero__stat {
  margin: 0;
  border-top: 1px solid rgba(244, 242, 235, 0.25);
  padding-top: 0.7rem;
}

.page-home .home-hero__stat dt {
  font-size: 0.72rem;
  color: var(--color-fog);
}

.page-home .home-hero__stat dd {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  color: var(--color-paper);
  margin: 0.2rem 0 0;
  line-height: 1.2;
}

/* ---------- 本页目录 ---------- */

.page-home .home-toc {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.4rem;
  padding: 1rem 1.25rem;
  background: var(--color-paper);
  border-bottom: 1px solid var(--color-line);
}

.page-home .home-toc__label {
  width: 100%;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--color-muted);
}

.page-home .home-toc__link {
  color: var(--color-muted);
  text-decoration: none;
  font-size: 0.85rem;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-home .home-toc__link.is-active {
  color: var(--color-spring);
  border-bottom-color: var(--color-spring);
}

/* ---------- 章节通用头部 ---------- */

.page-home .home-section-head {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.page-home .home-section-head__en {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--color-muted);
}

.page-home .home-section-head__title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3.4vw, 2.4rem);
  margin: 0.25rem 0 0;
  line-height: 1.3;
  color: var(--color-ink);
}

.page-home .home-section-head__desc {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--color-muted);
  max-width: 36rem;
}

/* ---------- 内容目录索引 ---------- */

.page-home .home-index {
  padding: var(--section-pad);
  background: var(--color-paper);
  border-bottom: 1px solid var(--color-fog);
}

.page-home .home-index__layout {
  display: grid;
  gap: 1.25rem;
}

.page-home .home-index__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.75rem;
}

.page-home .home-index__card {
  display: block;
  border: 1px solid var(--color-fog);
  border-top: 3px solid var(--color-line);
  background: var(--color-winter);
  padding: 1.2rem 1.25rem;
  text-decoration: none;
  color: var(--color-ink);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-home .home-index__card:hover {
  border-top-color: var(--color-spring);
  transform: translateY(-2px);
}

.page-home .home-index__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-muted);
  margin-bottom: 0.7rem;
}

.page-home .home-index__name {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: var(--color-ink);
  margin-bottom: 0.4rem;
}

.page-home .home-index__desc {
  display: block;
  font-size: 0.84rem;
  line-height: 1.6;
  color: var(--color-muted);
}

.page-home .home-index__figure {
  margin: 0;
  padding: 0.75rem;
  border: 1px solid var(--color-fog);
  background: var(--color-winter);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 0.75rem;
}

.page-home .home-index__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-home .home-index__figure figcaption {
  font-size: 0.8rem;
  color: var(--color-muted);
}

/* ---------- 四季浏览器版使用指南 ---------- */

.page-home .home-guide {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  background: var(--color-winter);
  border-bottom: 1px solid var(--color-fog);
}

.page-home .home-guide__rail {
  display: none;
}

.page-home .home-guide__content {
  padding: var(--section-pad);
}

.page-home .home-guide__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.75rem;
}

.page-home .home-guide__item {
  background: var(--color-paper);
  border-left: 2px solid var(--color-line);
  padding: 1.25rem;
}

.page-home .home-guide__item-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-spring);
}

.page-home .home-guide__item h3 {
  font-family: var(--font-serif);
  font-size: 1.12rem;
  margin: 0.7rem 0 0.45rem;
  color: var(--color-ink);
}

.page-home .home-guide__item p {
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--color-muted);
}

.page-home .home-guide__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

/* ---------- 大陆版四季面板设置 ---------- */

.page-home .home-panel {
  padding: var(--section-pad);
  background: var(--color-paper);
  border-bottom: 1px solid var(--color-fog);
}

.page-home .home-panel__layout {
  display: grid;
  gap: 1.25rem;
}

.page-home .home-panel__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.75rem;
}

.page-home .home-panel__item {
  position: relative;
  border: 1px solid var(--color-fog);
  padding: 1.5rem 1.25rem 1.25rem;
  background: var(--color-paper);
  transition: border-color var(--dur) var(--ease);
}

.page-home .home-panel__item:hover {
  border-color: var(--color-spring);
}

.page-home .home-panel__tag {
  position: absolute;
  top: 0.55rem;
  right: 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  color: var(--color-tea);
}

.page-home .home-panel__item h3 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  margin: 0 0 0.45rem;
  color: var(--color-ink);
}

.page-home .home-panel__item p {
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.65;
  color: var(--color-muted);
}

.page-home .home-panel__aside {
  display: grid;
  gap: 0.85rem;
  padding: 0.85rem;
  border: 1px solid var(--color-fog);
  background: var(--color-winter);
  align-content: start;
}

.page-home .home-panel__aside img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-home .home-panel__aside p {
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--color-muted);
}

/* ---------- 四季填问题反馈入口 ---------- */

.page-home .home-feedback {
  display: grid;
  gap: 1.5rem;
  padding: 2.75rem 1.25rem;
  background: var(--color-ink);
  color: var(--color-paper);
}

.page-home .home-feedback__kicker {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--color-spring);
}

.page-home .home-feedback__title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3.4vw, 2.3rem);
  margin: 0.5rem 0 0.85rem;
  color: var(--color-paper);
}

.page-home .home-feedback__block p {
  max-width: 34rem;
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: rgba(244, 242, 235, 0.78);
}

.page-home .home-feedback__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: feedback-step;
}

.page-home .home-feedback__steps li {
  position: relative;
  counter-increment: feedback-step;
  border-top: 1px solid rgba(244, 242, 235, 0.22);
  padding: 0.95rem 0 0.95rem 2.2rem;
  font-size: 0.9rem;
  color: rgba(244, 242, 235, 0.9);
}

.page-home .home-feedback__steps li::before {
  content: "0" counter(feedback-step);
  position: absolute;
  left: 0;
  top: 0.95rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-spring);
}

/* ---------- 站内检索回访习惯 ---------- */

.page-home .home-retrieval {
  display: grid;
  gap: 1.75rem;
  padding: var(--section-pad);
  background: var(--color-paper);
  border-bottom: 1px solid var(--color-fog);
  position: relative;
  overflow: hidden;
}

.page-home .home-retrieval__list {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  border-top: 1px solid var(--color-line);
}

.page-home .home-retrieval__list li {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  border-bottom: 1px solid var(--color-fog);
  padding: 0.85rem 0;
  font-size: 0.9rem;
  color: var(--color-ink);
}

.page-home .home-retrieval__list li::before {
  content: "·";
  color: var(--color-spring);
  font-weight: 700;
  flex-shrink: 0;
}

.page-home .home-retrieval__dial {
  width: 9.5rem;
  height: 9.5rem;
  margin: 0 auto;
  border: 1px solid var(--color-line);
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--color-muted);
  transform: rotate(-6deg);
  background: var(--color-winter);
}

.page-home .home-retrieval__dial span {
  line-height: 1;
}

.page-home .home-retrieval__dial span:first-child {
  color: var(--color-ink);
}

/* ---------- 资料库更新节奏 ---------- */

.page-home .home-archive {
  padding: var(--section-pad);
  background: var(--color-winter);
}

.page-home .home-archive__timeline {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
  margin: 0 0 2rem;
}

.page-home .home-archive__year {
  border-top: 2px solid var(--color-fog);
  padding-top: 0.7rem;
}

.page-home .home-archive__year span {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--color-ink);
}

.page-home .home-archive__year p {
  margin: 0.3rem 0 0;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--color-muted);
}

.page-home .home-archive__bottom {
  display: grid;
  gap: 0.85rem;
  align-items: center;
}

.page-home .home-archive__bottom img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  border: 1px solid var(--color-fog);
}

.page-home .home-archive__bottom p {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--color-muted);
  max-width: 34rem;
}

/* ---------- 平板与桌面端布局 ---------- */

@media (min-width: 720px) {
  .page-home .home-index__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .page-home .home-index__grid .home-index__card:last-child {
    grid-column: span 2;
  }

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

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

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

  .page-home .home-feedback .btn {
    grid-column: 1 / -1;
  }

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

@media (min-width: 980px) {
  .page-home .home-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    min-height: 92vh;
  }

  .page-home .home-hero__media {
    min-height: 92vh;
  }

  .page-home .home-hero__headline {
    position: absolute;
    left: 3rem;
    right: 2rem;
    bottom: 3.25rem;
    padding: 0;
  }

  .page-home .home-hero__title {
    font-size: clamp(2.6rem, 4.4vw, 4.2rem);
    max-width: 40rem;
  }

  .page-home .home-hero__body {
    padding: 3rem 2.75rem;
  }

  .page-home .home-hero__no {
    color: var(--color-fog);
  }

  .page-home .home-index__layout {
    grid-template-columns: minmax(0, 1fr) 17rem;
  }

  .page-home .home-index__figure {
    height: 100%;
  }

  .page-home .home-guide {
    grid-template-columns: 7rem minmax(0, 1fr);
  }

  .page-home .home-guide__rail {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    background: var(--color-ink);
    color: var(--color-paper);
    padding: 2.25rem 0;
  }

  .page-home .home-guide__rail span:first-child {
    font-family: var(--font-serif);
    font-size: 2.6rem;
    color: var(--color-spring);
    writing-mode: vertical-rl;
  }

  .page-home .home-guide__rail span:last-child {
    font-family: var(--font-mono);
    font-size: 0.62rem;
    letter-spacing: 0.22em;
    writing-mode: vertical-rl;
    color: var(--color-fog);
  }

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

  .page-home .home-panel__layout {
    grid-template-columns: minmax(0, 1fr) 24rem;
    align-items: start;
  }

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

  .page-home .home-retrieval {
    grid-template-columns: minmax(0, 1fr) 22rem;
    align-items: center;
  }

  .page-home .home-retrieval__dial {
    margin: 0;
    width: 11rem;
    height: 11rem;
  }

  .page-home .home-archive__timeline {
    grid-template-columns: repeat(7, minmax(0, 1fr));
    gap: 1.25rem;
  }

  .page-home .home-archive__bottom {
    grid-template-columns: minmax(0, 1fr) 24rem;
  }
}

@media (min-width: 1120px) {
  .page-home .home-guide__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-home .home-panel__layout {
    grid-template-columns: minmax(0, 1fr) 20rem;
  }
}