.page-home {
  --home-glow: rgba(232, 201, 122, .38);
  --home-shadow: 0 14px 30px rgba(26, 26, 24, .12);
  --home-line: 1px solid var(--line);
}

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

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

.page-home .sec-head {
  max-width: 62ch;
  margin-bottom: var(--s4);
}

.page-home .sec-head--tight {
  margin-bottom: var(--s3);
}

.page-home .sec-head__k {
  color: var(--gold);
  margin-bottom: var(--s2);
}

.page-home .sec-head__title {
  margin-bottom: var(--s2);
}

.page-home .sec-head__lead {
  color: var(--ink);
  opacity: .84;
}

/* ============ 首屏 ============ */

.page-home .hero {
  position: relative;
  overflow: hidden;
  border-bottom: var(--home-line);
}

.page-home .hero::before {
  content: "";
  position: absolute;
  top: -18%;
  right: -12%;
  width: min(560px, 82vw);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, var(--lamp) 0%, rgba(232, 201, 122, 0) 68%);
  opacity: .55;
  pointer-events: none;
}

.page-home .hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: 96px 96px;
  opacity: .5;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .9), transparent 78%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .9), transparent 78%);
}

.page-home .hero__band {
  position: relative;
  z-index: 1;
  padding-top: var(--s3);
  color: var(--mist);
}

.page-home .hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--s4);
  padding-top: var(--s4);
  padding-bottom: var(--s5);
}

.page-home .hero__lead {
  position: relative;
  min-width: 0;
}

.page-home .hero__title {
  font-family: var(--ff-display);
  font-size: clamp(38px, 9vw, 68px);
  line-height: 1.12;
  letter-spacing: .01em;
  color: var(--ink);
  margin-bottom: var(--s3);
}

.page-home .hero__sub {
  max-width: 34ch;
  color: var(--ink);
  opacity: .86;
  margin-bottom: var(--s4);
}

.page-home .hero__side {
  display: none;
  color: var(--mist);
}

.page-home .hero__fig {
  min-width: 0;
}

.page-home .hero__fig .frame__cap {
  font-size: 13px;
  line-height: 1.7;
}

/* 四向索引 */

.page-home .idx__list {
  border-top: var(--home-line);
}

.page-home .idx__item {
  border-bottom: var(--home-line);
}

.page-home .idx__link {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: var(--s2);
  padding: var(--s3) 0 var(--s3) var(--s2);
  color: var(--ink);
  text-decoration: none;
  transition: background-color var(--dur-fast) var(--ease), padding-left var(--dur-fast) var(--ease);
}

.page-home .idx__link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14%;
  bottom: 14%;
  width: 2px;
  background: var(--cinnabar);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--dur) var(--ease);
}

.page-home .idx__link:hover,
.page-home .idx__link:focus-visible {
  background: var(--paper);
  padding-left: var(--s3);
}

.page-home .idx__link:hover::before,
.page-home .idx__link:focus-visible::before {
  transform: scaleY(1);
}

.page-home .idx__no {
  color: var(--gold);
  flex: 0 0 auto;
}

.page-home .idx__text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-home .idx__name {
  font-family: var(--ff-display);
  font-size: 20px;
  letter-spacing: .04em;
}

.page-home .idx__desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
  position: relative;
  display: inline-block;
}

.page-home .idx__link:hover .idx__desc::after,
.page-home .idx__link:focus-visible .idx__desc::after {
  transform: scaleX(1);
}

.page-home .idx__desc::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-fast) var(--ease);
}

/* ============ 房间 ============ */

.page-home .rooms {
  background: var(--ivory);
  border-bottom: var(--home-line);
  padding: var(--s5) 0;
}

.page-home .rooms__grid {
  display: grid;
  gap: var(--s3);
  grid-template-columns: minmax(0, 1fr);
}

.page-home .room {
  display: flex;
  flex-direction: column;
  gap: var(--s1);
  padding: var(--s3);
  background: var(--paper);
  border: var(--home-line);
  box-shadow: 0 1px 0 rgba(26, 26, 24, .04);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-home .room:hover,
.page-home .room:focus-within {
  transform: perspective(900px) rotateX(-2deg) translateY(-4px);
  box-shadow: var(--home-shadow);
  border-color: var(--line-strong);
}

.page-home .room--feature {
  padding: 0;
  background: var(--ivory);
  grid-column: span 1;
}

.page-home .room--feature .room__body {
  display: flex;
  flex-direction: column;
  gap: var(--s1);
  padding: var(--s3);
  flex: 1;
}

.page-home .room__shot {
  border-bottom: var(--home-line);
}

.page-home .room__head {
  display: flex;
  align-items: center;
  gap: var(--s2);
  flex-wrap: wrap;
}

.page-home .room__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  flex: 0 0 auto;
  font-family: var(--ff-display);
  font-size: 14px;
  color: var(--bamboo);
  border: 1px solid var(--line-strong);
  background: var(--ivory);
}

.page-home .room__name {
  color: var(--ink);
}

.page-home .room__tag {
  margin-left: auto;
}

.page-home .room__meta {
  color: var(--gold);
  letter-spacing: .1em;
}

.page-home .room__desc {
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink);
  opacity: .86;
}

.page-home .room__back {
  margin-top: auto;
  padding-top: var(--s2);
  border-top: 1px dashed var(--line-strong);
  font-size: 13px;
  line-height: 1.75;
  color: var(--mist);
  transition: color var(--dur) var(--ease);
}

.page-home .room__back::before {
  content: "◆ ";
  color: var(--gold);
}

.page-home .room:hover .room__back,
.page-home .room:focus-within .room__back {
  color: var(--bamboo-deep);
}

/* ============ 三个卡点 ============ */

.page-home .stuck {
  background: var(--paper);
  border-bottom: var(--home-line);
  padding: var(--s5) 0;
}

.page-home .stuck__grid {
  display: grid;
  gap: var(--s4);
  grid-template-columns: minmax(0, 1fr);
}

.page-home .stuck__list {
  display: grid;
  gap: var(--s2);
  counter-reset: none;
}

.page-home .stuck__item {
  position: relative;
  padding: var(--s3) var(--s3) var(--s3) var(--s4);
  background: var(--ivory);
  border: var(--home-line);
  border-left: 2px solid var(--bamboo);
  transition: border-left-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-home .stuck__item:hover {
  border-left-color: var(--cinnabar);
  box-shadow: 0 8px 20px rgba(26, 26, 24, .07);
}

.page-home .stuck__no {
  display: block;
  color: var(--gold);
  margin-bottom: var(--s1);
}

.page-home .stuck__name {
  margin-bottom: var(--s1);
  color: var(--ink);
}

.page-home .stuck__desc {
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink);
  opacity: .86;
  margin-bottom: var(--s2);
}

.page-home .stuck__go {
  display: inline-block;
  font-size: 14px;
  color: var(--cinnabar);
  text-decoration: none;
  border-bottom: 1px solid rgba(178, 58, 46, .35);
  transition: border-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}

.page-home .stuck__go:hover {
  border-color: var(--cinnabar);
}

.page-home .stuck__arrow {
  display: inline-block;
  margin-left: 6px;
  transition: transform var(--dur-fast) var(--ease);
}

.page-home .stuck__go:hover .stuck__arrow {
  transform: translateX(4px);
}

.page-home .stuck__fig {
  min-width: 0;
  align-self: start;
}

.page-home .stuck__fig .frame__cap {
  font-size: 13px;
  line-height: 1.7;
}

/* ============ 版本差异 ============ */

.page-home .diff {
  background: var(--ivory);
  border-bottom: var(--home-line);
  padding: var(--s5) 0;
}

.page-home .diff__grid {
  display: grid;
  gap: var(--s4);
  grid-template-columns: minmax(0, 1fr);
}

.page-home .diff__table {
  border-top: 1px solid var(--bamboo);
}

.page-home .diff__row {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 6px var(--s2);
  padding: var(--s2) 0;
  border-bottom: var(--home-line);
  transition: background-color var(--dur-fast) var(--ease);
}

.page-home .diff__row--head {
  background: var(--bamboo-deep);
  color: var(--ivory);
  padding: var(--s2) var(--s2) var(--s2);
  border-bottom: none;
}

.page-home .diff__row--head .diff__no,
.page-home .diff__row--head .diff__k,
.page-home .diff__row--head .diff__a,
.page-home .diff__row--head .diff__b {
  color: var(--ivory);
  opacity: .92;
}

.page-home .diff__row:not(.diff__row--head):hover {
  background: var(--paper);
}

.page-home .diff__no {
  color: var(--gold);
  padding-top: 2px;
  transition: color var(--dur-fast) var(--ease);
}

.page-home .diff__row:not(.diff__row--head):hover .diff__no {
  color: var(--cinnabar);
}

.page-home .diff__k {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

.page-home .diff__a,
.page-home .diff__b {
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
  grid-column: 2;
}

.page-home .diff__b {
  color: var(--bamboo-deep);
}

.page-home .diff__b::before {
  content: "◆ ";
  color: var(--cinnabar);
  font-size: 10px;
}

.page-home .diff__foot {
  margin-top: var(--s3);
  margin-bottom: var(--s2);
}

.page-home .diff__fig {
  min-width: 0;
  align-self: start;
}

.page-home .diff__fig .frame__cap {
  font-size: 13px;
  line-height: 1.7;
}

/* ============ 来路 ============ */

.page-home .lineage {
  background: var(--ivory);
  border-bottom: var(--home-line);
  padding: var(--s5) 0;
}

.page-home .lineage__track {
  display: grid;
  gap: var(--s3);
  grid-template-columns: minmax(0, 1fr);
  border-top: 1px solid var(--bamboo);
  padding-top: var(--s4);
}

.page-home .lineage__stop {
  position: relative;
  padding-left: var(--s3);
  border-left: 1px solid var(--line-strong);
  padding-bottom: var(--s2);
}

.page-home .lineage__stop::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 8px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold);
  border: 1px solid var(--ivory);
}

.page-home .lineage__year {
  display: block;
  color: var(--cinnabar);
  margin-bottom: 6px;
}

.page-home .lineage__name {
  margin-bottom: 6px;
  color: var(--ink);
}

.page-home .lineage__text {
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink);
  opacity: .82;
}

.page-home .lineage__more {
  display: inline-block;
  margin-top: var(--s3);
  font-size: 15px;
  color: var(--bamboo);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  transition: border-color var(--dur-fast) var(--ease);
}

.page-home .lineage__more:hover {
  border-color: var(--bamboo);
}

.page-home .lineage__more:hover .stuck__arrow {
  transform: translateX(4px);
}

/* ============ 兜底 ============ */

.page-home .backstop {
  background: var(--ivory);
  padding: var(--s5) 0;
}

.page-home .backstop__grid {
  display: grid;
  gap: var(--s3);
  grid-template-columns: minmax(0, 1fr);
}

.page-home .backstop__card {
  padding: var(--s4);
  border: var(--home-line);
}

.page-home .backstop__card--felt {
  background: var(--felt);
  color: var(--ivory);
  border-color: rgba(244, 239, 228, .14);
}

.page-home .backstop__card--paper {
  background: var(--paper);
}

.page-home .backstop__k {
  color: var(--gold);
  margin-bottom: var(--s2);
}

.page-home .backstop__card--felt .backstop__title {
  color: var(--ivory);
  margin-bottom: var(--s2);
}

.page-home .backstop__title-sm {
  color: var(--ink);
  margin-bottom: var(--s2);
}

.page-home .backstop__text {
  color: rgba(244, 239, 228, .84);
  margin-bottom: var(--s3);
}

.page-home .backstop__list {
  display: grid;
  gap: var(--s1);
  margin-bottom: var(--s3);
}

.page-home .backstop__list li {
  position: relative;
  padding-left: var(--s3);
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink);
}

.page-home .backstop__list li::before {
  content: "◆";
  position: absolute;
  left: 0;
  top: 0;
  font-size: 9px;
  color: var(--bamboo);
  line-height: 2.8;
}

.page-home .backstop__btn {
  display: inline-block;
  text-decoration: none;
}

.page-home .backstop__card--felt .backstop__btn {
  color: var(--ivory);
  border-color: rgba(244, 239, 228, .5);
}

.page-home .backstop__card--felt .backstop__btn:hover {
  border-color: var(--lamp);
  color: var(--lamp);
}

/* ============ 响应式 ============ */

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

  .page-home .diff__row {
    grid-template-columns: 40px minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.2fr);
    align-items: start;
  }

  .page-home .diff__a,
  .page-home .diff__b {
    grid-column: auto;
  }

  .page-home .lineage__track {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--s4) var(--s3);
  }

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

@media (min-width: 1000px) {
  .page-home .hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--s5);
    align-items: end;
    padding-top: var(--s5);
    padding-bottom: var(--s5);
  }

  .page-home .hero__side {
    display: block;
    position: absolute;
    top: 4px;
    right: 0;
  }

  .page-home .hero__fig {
    margin-bottom: -64px;
  }

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

  .page-home .room--feature {
    grid-column: span 2;
  }

  .page-home .stuck__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--s5);
    align-items: start;
  }

  .page-home .stuck__list {
    gap: var(--s3);
  }

  .page-home .diff__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--s5);
    align-items: start;
  }

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

  .page-home .lineage__stop {
    padding-left: var(--s3);
    padding-right: var(--s2);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .room:hover,
  .page-home .room:focus-within,
  .page-home .stuck__item:hover,
  .page-home .stuck__go:hover .stuck__arrow,
  .page-home .lineage__more:hover .stuck__arrow {
    transform: none;
  }

  .page-home .idx__link,
  .page-home .idx__desc::after,
  .page-home .idx__link::before,
  .page-home .room__back {
    transition: color var(--dur-fast) linear, background-color var(--dur-fast) linear, border-color var(--dur-fast) linear;
  }
}