/* ===== 首页 · 门内藏谱 ===== */

.page-home {
  overflow-x: hidden;
  background: var(--paper);
  color: var(--ink);
}

.page-home p {
  margin: 0 0 16px;
  line-height: 1.75;
}

.page-home h2 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 24px;
  line-height: 1.3;
  letter-spacing: 0.01em;
  color: var(--ink);
  margin: 0 0 14px;
}

.page-home h3 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 19px;
  line-height: 1.35;
  margin: 0 0 8px;
}

/* ---- 面包屑 ---- */
.page-home .ph-crumb {
  padding: 20px 0 4px;
}
.page-home .ph-crumb .breadcrumb__list {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--rock);
}
.page-home .ph-crumb .breadcrumb__current {
  color: var(--rock);
}
.page-home .ph-crumb .breadcrumb__current::before {
  content: "门牌 / ";
  color: var(--gold);
}

/* ---- 首屏：两扇不对等的门 ---- */
.page-home .ph-door {
  padding: 12px 0 0;
}
.page-home .ph-door__frame {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.page-home .ph-door__leaf--main {
  position: relative;
  padding: 34px 22px 30px;
  background-color: var(--deep);
  background-image: repeating-linear-gradient(
    90deg,
    rgba(244, 239, 227, 0.05) 0 1px,
    transparent 1px 28px
  );
  color: var(--cream);
  border-radius: var(--radius-organic) var(--radius-organic) 0 0;
  overflow: hidden;
}

.page-home .ph-door__eyebrow {
  color: var(--gold);
  margin: 0;
}

.page-home .ph-door__title {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 32px;
  line-height: 1.24;
  letter-spacing: 0.01em;
  color: var(--paper);
  margin: 14px 0 0;
  max-width: 22ch;
}

.page-home .ph-door__lead {
  margin: 18px 0 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--cream);
  max-width: 48ch;
}

.page-home .ph-paths {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-home .ph-path {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border: 1px solid rgba(244, 239, 227, 0.22);
  border-radius: var(--radius-m);
  background: rgba(244, 239, 227, 0.05);
  text-decoration: none;
  color: var(--paper);
  transition: transform 200ms ease, box-shadow 200ms ease,
    border-color 200ms ease, background-color 200ms ease;
}
.page-home .ph-path:hover {
  transform: translateX(3px);
  border-color: var(--cinnabar);
  background: rgba(244, 239, 227, 0.1);
  box-shadow: var(--shadow-2);
}
.page-home .ph-path:focus-visible {
  outline: 2px solid var(--cinnabar);
  outline-offset: 2px;
  border-color: var(--cinnabar);
}

.page-home .ph-path__num {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-home .ph-path__body {
  display: grid;
  gap: 3px;
  min-width: 0;
}
.page-home .ph-path__title {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
}
.page-home .ph-path__desc {
  font-size: 13px;
  line-height: 1.55;
  color: var(--cream-soft);
}
.page-home .ph-path__arrow {
  font-size: 18px;
  color: var(--cinnabar);
  transition: transform 200ms ease;
}
.page-home .ph-path:hover .ph-path__arrow {
  transform: translateX(3px);
}

.page-home .ph-door__leaf--side {
  position: relative;
  display: grid;
  grid-template-rows: auto auto;
  background: var(--paper-2);
  border: 1px solid var(--line-soft);
  border-top: 0;
  border-radius: 0 0 var(--radius-organic) var(--radius-organic);
  overflow: hidden;
}

.page-home .ph-door__figure {
  margin: 0;
  position: relative;
}
.page-home .ph-door__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  max-width: 100%;
}

.page-home .ph-door__preview {
  padding: 16px 20px 20px;
  background: var(--paper);
  border-top: 1px solid var(--line-soft);
}
.page-home .ph-door__preview-title {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--rock);
}
.page-home .ph-door__preview-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px 14px;
}
.page-home .ph-door__preview-list li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 13px;
  color: var(--ink);
}
.page-home .ph-door__preview-list .mono {
  font-size: 11px;
  color: var(--cinnabar);
}

@keyframes ph-door-swing {
  from {
    transform: perspective(1600px) rotateY(-7deg);
    opacity: 0.88;
  }
  to {
    transform: perspective(1600px) rotateY(-1.6deg);
    opacity: 1;
  }
}

/* ---- 章节标记 ---- */
.page-home .section-marker {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
}
.page-home .section-marker__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gold);
  border: 1px solid var(--gold-soft);
  border-radius: 3px;
  padding: 2px 7px;
}
.page-home .section-marker__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--rock);
}
.page-home .section-marker__line {
  flex: 1 1 auto;
  height: 1px;
  background: linear-gradient(90deg, var(--gold-soft), transparent);
}

/* ---- 01 检索中心 ---- */
.page-home .ph-search {
  background: var(--paper);
}
.page-home .ph-search__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: start;
}
.page-home .ph-search__text p {
  color: var(--ink);
  font-size: 16px;
}
.page-home .ph-search__text h2 {
  max-width: 26ch;
}

.page-home .ph-demo {
  margin: 24px 0 26px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-m);
  background: var(--paper);
  overflow: hidden;
  box-shadow: var(--shadow-1);
}
.page-home .ph-demo__field {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 15px;
  background: var(--paper-2);
  border-bottom: 1px solid var(--line-soft);
}
.page-home .ph-demo__prompt {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--rock);
}
.page-home .ph-demo__text {
  flex: 1 1 auto;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--ink);
  border-bottom: 2px solid var(--cinnabar);
  padding-bottom: 2px;
}
.page-home .ph-demo__hint {
  font-size: 12px;
  color: var(--rock);
}
.page-home .ph-demo__results {
  list-style: none;
  margin: 0;
  padding: 12px 15px 15px;
  display: grid;
  gap: 10px;
}
.page-home .ph-demo__results li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink);
  padding-left: 10px;
  border-left: 2px solid var(--line-soft);
}
.page-home .ph-demo__results .mono {
  font-size: 12px;
  color: var(--rock);
  flex: 0 0 auto;
}
.page-home mark.hl {
  background: var(--hl);
  color: var(--ink);
  padding: 0 3px;
  border-radius: 3px;
}

.page-home .ph-search__figure {
  margin: 0;
}
.page-home .ph-search__figure .figure__frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-organic);
  border: 1px solid var(--line-soft);
}
.page-home .ph-search__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  max-width: 100%;
}
.page-home .ph-search__figure .figure__frame::after {
  content: "";
  position: absolute;
  inset: 18px;
  border: 1px dashed var(--hl);
  border-radius: var(--radius-s);
  pointer-events: none;
  opacity: 0.75;
}

/* ---- 02 版本 4.2 ---- */
.page-home .ph-ver {
  background: var(--paper-2);
}
.page-home .ph-ver h2 {
  max-width: 24ch;
}
.page-home .ph-ver > .wrap > p {
  color: var(--ink);
  font-size: 16px;
}
.page-home .ph-ver__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin: 24px 0 22px;
}
.page-home .ph-ver__item {
  padding: 20px 20px 18px;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-left: 4px solid var(--gold);
  border-radius: 0 var(--radius-m) var(--radius-m) 0;
  transition: transform 200ms ease, box-shadow 200ms ease;
}
.page-home .ph-ver__item:nth-child(2) {
  border-left-color: var(--cinnabar);
}
.page-home .ph-ver__item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-1);
}
.page-home .ph-ver__item .tag {
  margin-bottom: 10px;
}
.page-home .ph-ver__title {
  font-size: 19px;
  margin: 8px 0 8px;
}
.page-home .ph-ver__item p {
  margin: 0;
  font-size: 15px;
  color: var(--ink);
}
.page-home .ph-ver .note {
  margin: 0;
  font-size: 14px;
  color: var(--rock);
}

/* ---- 03 版本沿革 ---- */
.page-home .ph-line {
  position: relative;
  background: var(--deep);
  color: var(--cream);
  overflow: hidden;
}
.page-home .ph-line__bg {
  position: absolute;
  inset: 0;
  opacity: 0.18;
  pointer-events: none;
}
.page-home .ph-line__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  max-width: 100%;
}
.page-home .ph-line__inner {
  position: relative;
  z-index: 1;
}
.page-home .ph-line .section-marker__label {
  color: var(--line);
}
.page-home .ph-line h2 {
  color: var(--paper);
  max-width: 24ch;
}
.page-home .ph-line__lead {
  color: var(--cream);
  font-size: 16px;
  max-width: 54ch;
}
.page-home .ph-line__timeline {
  margin-top: 32px;
  border-left: 1px solid var(--gold-soft);
  padding-left: 0;
}

.page-home .timeline__item {
  position: relative;
  padding: 0 0 30px 26px;
  list-style: none;
}
.page-home .timeline__item::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 7px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(201, 162, 39, 0.16);
}
.page-home .timeline__year {
  display: block;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gold);
}
.page-home .timeline__title {
  margin: 7px 0 7px;
  font-size: 19px;
  color: var(--paper);
}
.page-home .timeline__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--cream);
  max-width: 52ch;
}

/* ---- 04 资料归档 ---- */
.page-home .ph-shelf {
  background: var(--paper);
}
.page-home .ph-shelf h2 {
  max-width: 30ch;
}
.page-home .ph-shelf__lead {
  color: var(--ink);
  font-size: 16px;
  max-width: 58ch;
  margin-bottom: 30px;
}
.page-home .ph-shelf__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: start;
}
.page-home .ph-shelf__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.page-home .ph-shelf__item {
  position: relative;
  padding: 20px 20px 18px 26px;
  background: var(--paper-2);
  border-radius: var(--radius-m);
  --spine: var(--line);
}
.page-home .ph-shelf__item--now {
  --spine: var(--gold);
}
.page-home .ph-shelf__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 4px;
  border-radius: 4px;
  background: var(--spine);
}
.page-home .ph-shelf__tag {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--rock);
  border: 1px solid var(--line-soft);
  border-radius: 3px;
  padding: 2px 7px;
}
.page-home .ph-shelf__item--now .ph-shelf__tag {
  color: var(--cinnabar);
  border-color: var(--cinnabar);
}
.page-home .ph-shelf__title {
  font-size: 19px;
  margin: 10px 0 8px;
}
.page-home .ph-shelf__item p {
  margin: 0;
  font-size: 15px;
  color: var(--ink);
}
.page-home .ph-shelf__svg {
  display: block;
  width: 100%;
  max-width: 360px;
  height: auto;
  margin: 28px 0 0;
}

.page-home .ph-shelf__figure {
  margin: 0;
}
.page-home .ph-shelf__figure .figure__frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-organic);
  border: 1px solid var(--line-soft);
  background: var(--deep);
}
.page-home .ph-shelf__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  max-width: 100%;
}
.page-home .ph-shelf__figure .figure__box {
  position: absolute;
  left: 22%;
  top: 30%;
  width: 34%;
  height: 22%;
  border: 2px solid var(--hl);
  border-radius: var(--radius-s);
  background: rgba(239, 217, 160, 0.14);
  pointer-events: none;
}

/* ---- 05 新访客问答 ---- */
.page-home .ph-faq {
  background: var(--paper);
}
.page-home .ph-faq h2 {
  margin-bottom: 20px;
}
.page-home .ph-faq__item {
  border-bottom: 1px solid var(--line-soft);
}
.page-home .ph-faq__item:first-of-type {
  border-top: 1px solid var(--line-soft);
}
.page-home .ph-faq__item .fold__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 20px 0;
  font-family: var(--font-head);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}
.page-home .ph-faq__item .fold__head::-webkit-details-marker {
  display: none;
}
.page-home .ph-faq__item .fold__head::after {
  content: "＋";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--cinnabar);
}
.page-home .ph-faq__item[open] .fold__head::after {
  content: "－";
}
.page-home .ph-faq__item .fold__head:hover {
  color: var(--cinnabar-2);
}
.page-home .ph-faq__item .fold__head:focus-visible {
  outline: 2px solid var(--cinnabar);
  outline-offset: 2px;
}
.page-home .ph-faq__item .fold__body {
  padding: 0 0 22px;
  max-width: 62ch;
}
.page-home .ph-faq__item .fold__body p {
  margin: 0;
  font-size: 16px;
  color: var(--ink);
}

/* ---- 06 最近更新 ---- */
.page-home .ph-news {
  background: var(--paper-2);
}
.page-home .ph-news__list {
  list-style: none;
  margin: 22px 0 26px;
  padding: 0;
}
.page-home .ph-news__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
}
.page-home .ph-news__item:first-child {
  border-top: 1px solid var(--line-soft);
}
.page-home .ph-news__date {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--rock);
}
.page-home .ph-news__text {
  margin: 0;
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink);
}
.page-home .ph-news__item .tag {
  justify-self: start;
}

/* ---- 案头数据 ---- */
.page-home .ph-facts {
  background: var(--deep);
}
.page-home .ph-facts__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px 20px;
}
.page-home .ph-facts__item {
  border-top: 1px solid var(--hairline);
  padding-top: 14px;
}
.page-home .ph-facts__num {
  display: block;
  font-size: 30px;
  line-height: 1.1;
  letter-spacing: 0.02em;
  color: var(--gold);
}
.page-home .ph-facts__label {
  display: block;
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--cream);
}

/* ---- 收尾 ---- */
.page-home .ph-tail {
  background: var(--paper);
}
.page-home .ph-tail__inner {
  display: grid;
  gap: 18px;
}
.page-home .ph-tail__text {
  margin: 0;
  font-size: 17px;
  line-height: 1.7;
  color: var(--ink);
  max-width: 52ch;
}

/* ---- 入场淡入 ---- */
.page-home [data-reveal] {
  transition: opacity 300ms ease, transform 300ms ease;
}
.js .page-home [data-reveal]:not(.is-visible) {
  opacity: 0;
  transform: translateY(12px);
}

/* ===== 平板及以上 ===== */
@media (min-width: 760px) {
  .page-home .ph-door__leaf--main {
    padding: 44px 38px 40px;
  }
  .page-home .ph-door__title {
    font-size: 38px;
  }
  .page-home .ph-ver__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-home .ph-news__item {
    grid-template-columns: 110px minmax(0, 1fr) auto;
    gap: 20px;
    align-items: baseline;
  }
  .page-home .ph-news__item .tag {
    justify-self: end;
  }
  .page-home .ph-tail__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 28px;
  }
}

/* ===== 桌面：门扇开合 ===== */
@media (min-width: 900px) {
  .page-home h2 {
    font-size: 32px;
  }
  .page-home .ph-door {
    padding: 24px 0 0;
  }
  .page-home .ph-door__frame {
    grid-template-columns: 7fr 5fr;
    perspective: 1600px;
  }
  .page-home .ph-door__leaf--main {
    padding: 56px 48px 52px;
    border-radius: var(--radius-organic) 0 0 var(--radius-organic);
  }
  .page-home .ph-door__title {
    font-size: 44px;
  }
  .page-home .ph-door__leaf--side {
    border-top: 1px solid var(--line-soft);
    border-left: 0;
    border-radius: 0 var(--radius-organic) var(--radius-organic) 0;
    transform-origin: left center;
    animation: ph-door-swing 800ms cubic-bezier(0.22, 0.68, 0.2, 1) 160ms both;
  }
  .page-home .ph-search__grid {
    grid-template-columns: 7fr 5fr;
    gap: 48px;
  }
  .page-home .ph-shelf__grid {
    grid-template-columns: 5fr 4fr;
    gap: 48px;
  }
  .page-home .ph-facts__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 28px;
  }
  .page-home .ph-facts__num {
    font-size: 34px;
  }
}

/* ===== 减弱动效 ===== */
@media (prefers-reduced-motion: reduce) {
  .page-home .ph-door__leaf--side {
    animation: none;
    transform: none;
  }
  .page-home .ph-path,
  .page-home .ph-path__arrow,
  .page-home .ph-ver__item,
  .page-home [data-reveal] {
    transition: none;
  }
  .page-home .ph-path:hover,
  .page-home .ph-ver__item:hover {
    transform: none;
  }
  .page-home .ph-path:hover .ph-path__arrow {
    transform: none;
  }
  .js .page-home [data-reveal]:not(.is-visible) {
    opacity: 1;
    transform: none;
  }
}