/* 01 基础：移动端优先；样式与 HTML 结构分离。 */
@font-face {
  font-family: MaShanZheng;
  src: url("https://res.cloudinary.com/nzidtogy/raw/upload/v1790231842/chapter-01-residence/cccf1c7a86f1/ma-shan-zheng.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: NotoSansSC;
  src: url("https://res.cloudinary.com/nzidtogy/raw/upload/v1790231843/chapter-01-residence/830b49e66f8f/noto-sans-sc.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}
:root {
  --ink: #080e0d;
  --text: #f2ebdd;
  --muted: #b3b9ae;
  --gold: #c9a86a;
  --red: #9c342b;
  --line: rgba(201, 168, 106, 0.24);
  --panel: linear-gradient(130deg, #050b0a 9%, #0e2e25 42%, #030606 82%);
  --surface: linear-gradient(140deg, #050b0a 9%, #0e221f 42%, #030606 82%);
  --body-font: NotoSansSC, "Microsoft YaHei", sans-serif;
  --display-font: MaShanZheng, "KaiTi", serif;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
.page {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
  background: var(--ink);
}
.page__body {
  max-width: 1920px;
  margin: 0 auto;
  color: var(--text);
  background: var(--ink);
  font: 16px/1.65 var(--body-font);
  overflow-wrap: break-word;
}
img {
  max-width: 100%;
}
.image {
  display: block;
  height: auto;
}
.link {
  color: inherit;
  text-decoration: none;
  text-underline-offset: 5px;
}
.link:hover {
  color: var(--gold);
}
.link:focus-visible,
.menu-toggle:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 5px;
}
.list {
  list-style: none;
}
.heading--page,
.heading--section,
.heading--card,
.heading--detail {
  font-weight: 400;
}
.heading--section,
.heading--card,
.heading--detail {
  font-family: var(--display-font);
  line-height: 1.45;
  letter-spacing: 0.03em;
}
.heading--section {
  font-size: 34px;
}
.heading--card {
  font-size: 28px;
}
.heading--detail {
  font-size: 25px;
}
.section[id],
.figure[id] {
  scroll-margin-top: 18px;
}
.container {
  width: calc(100% - 40px);
  max-width: 1472px;
  margin: 0 auto;
}
.eyebrow {
  font: 400 12px/1.55 var(--body-font);
  letter-spacing: 1px;
  color: var(--gold);
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: fixed;
  top: 8px;
  left: 16px;
  padding: 12px 20px;
  background: var(--gold);
  color: var(--ink);
  z-index: 100;
  transform: translateY(-160%);
}
.skip-link:focus {
  transform: translateY(0);
  color: var(--ink);
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  min-height: 52px;
  padding: 12px 21px;
  border: 1px solid var(--gold);
  font-size: 16px;
  transition:
    background 0.2s,
    color 0.2s;
}
.button:hover {
  background: var(--gold);
  color: var(--ink);
}
.button--pending {
  border-color: var(--line);
  color: var(--muted);
  cursor: default;
}
.button--pending:hover {
  background: transparent;
  color: var(--muted);
}
.image-link {
  display: block;
  overflow: hidden;
  position: relative;
}
.image-link .image {
  transition: filter 0.25s;
}
.image-link:hover .image {
  filter: brightness(1.08);
}
.caption {
  font-size: 12px;
  letter-spacing: 0.5px;
  color: var(--gold);
  line-height: 1.6;
}
.section-heading > .eyebrow {
  margin-bottom: 24px;
}
.section-heading__description {
  margin-top: 20px;
  color: var(--muted);
}
.section-grid {
  position: relative;
  isolation: isolate;
}
.section-grid:after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(201, 168, 106, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 168, 106, 0.035) 1px, transparent 1px);
  background-size: 80px 80px;
}

/* 02 页头与首屏：Flex 导航、相对定位和仅用于叠层的绝对定位。 */
.site-header {
  background: var(--surface);
  position: relative;
  z-index: 30;
}
.site-header__inner {
  min-height: 68px;
  width: calc(100% - 40px);
  margin: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: var(--gold);
}
.site-header__brand {
  white-space: nowrap;
  font-size: 15px;
}
.site-header__navigation,
.site-header__caption {
  display: none;
}
.mobile-menu {
  position: relative;
  font-size: 13px;
}
.mobile-menu__toggle {
  cursor: pointer;
  list-style: none;
  min-height: 44px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.mobile-menu__toggle::-webkit-details-marker {
  display: none;
}
.mobile-menu[open] .mobile-menu__toggle .text-label {
  transform: rotate(45deg);
}
.mobile-menu__panel {
  position: absolute;
  right: 0;
  top: 50px;
  width: 220px;
  padding: 12px 20px;
  background: #0a1b16;
  border: 1px solid var(--line);
  box-shadow: 0 10px 35px #0008;
}
.mobile-menu__panel .link {
  display: block;
  padding: 12px 0;
}
.hero__scene {
  min-height: 820px;
  padding: 28px 20px 30px;
  position: relative;
  background:
    linear-gradient(90deg, rgba(6, 15, 13, 0.9), rgba(6, 15, 13, 0.22)),
    url("https://res.cloudinary.com/nzidtogy/image/upload/v1790231839/chapter-01-residence/b67f3769283b/house-scene.webp") center/cover;
}
.hero__breadcrumb {
  color: var(--gold);
  font-size: 11px;
  letter-spacing: 0.7px;
}
.hero__title {
  margin-top: 60px;
  width: min(95%, 540px);
}
.hero__title-enter {
  width: 42%;
  margin-bottom: 12px;
}
.hero__title-residence {
  width: 77%;
  margin-left: 14%;
}
.calligraphy {
  display: flex;
  align-items: start;
  font-family: var(--display-font);
  font-weight: 400;
  line-height: 1.12;
  letter-spacing: 0;
  white-space: nowrap;
}
.calligraphy > .text-label {
  display: block;
  flex: 1;
  transform: skewX(3.15deg);
  background: linear-gradient(#f7e0a3, #c9a157 45%, #85612e);
  background-clip: text;
  color: transparent;
}
.calligraphy > .text-label:nth-child(3n + 2) {
  transform: translateY(0.035em) skewX(3.15deg) scale(0.941);
}
.calligraphy > .text-label:nth-child(3n + 1) {
  font-size: 1.0625em;
}
.hero__title-enter {
  font-size: clamp(64px, 16vw, 126.72px);
}
.hero__title-residence {
  font-size: clamp(60px, 14vw, 110.4px);
}
.pavilion__calligraphy {
  font-size: clamp(35px, 8vw, 78.5px);
  max-width: 656px;
}
.hero__introduction {
  font-size: 17px;
  line-height: 1.75;
  margin-top: 40px;
}
.hero__button {
  margin-top: 26px;
}
.hero__scroll {
  display: block;
  width: max-content;
  margin-top: 26px;
}
.hero-preview {
  background: linear-gradient(130deg, #06140ff5, #0b241eea, #030606ed);
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 16px;
  padding: 16px;
  max-width: 340px;
  margin-top: 40px;
}
.hero-preview__image {
  width: 100px;
  height: 143px;
  object-fit: cover;
}
.hero-preview__title {
  font-family: "Noto Serif SC", SimSun, serif;
  font-size: 22px;
  margin: 12px 0;
}
.hero-preview__content > .text:last-child {
  color: var(--muted);
  font-family: SimSun, serif;
  font-size: 16px;
  line-height: 1.6;
}
.hero-preview__link {
  grid-column: 1/-1;
  border-top: 1px solid var(--line);
  padding-top: 14px;
}
.hero__statement {
  background: var(--panel);
  padding: 25px 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  font-size: 18px;
}
.hero__statement > .eyebrow {
  font-size: 10px;
}
.chapter-navigation {
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 20;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 25px;
  border-bottom: 1px solid #c9a86a18;
}
.chapter-navigation__label {
  display: none;
}
.chapter-navigation__list {
  display: flex;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--gold) transparent;
  width: 100%;
  gap: 26px;
}
.chapter-navigation__list .list__item {
  flex-shrink: 0;
}
.chapter-navigation__list .link {
  display: flex;
  gap: 8px;
  align-items: center;
  min-height: 68px;
  color: var(--muted);
  font-size: 14px;
  border-bottom: 1px solid transparent;
}
.chapter-navigation__list .link:hover,
.chapter-navigation__list .link:focus-visible {
  border-bottom-color: var(--gold);
  color: var(--gold);
}
.page__body:has(#archive:target) .chapter-navigation .link[href="#archive"],
.page__body:has(#architecture:target)
  .chapter-navigation
  .link[href="#architecture"],
.page__body:has(#details:target) .chapter-navigation .link[href="#details"],
.page__body:has(#pavilion:target) .chapter-navigation .link[href="#pavilion"],
.page__body:has(#inside:target) .chapter-navigation .link[href="#inside"] {
  border-bottom-color: var(--gold);
  color: var(--gold);
}

/* 03 故居档案：移动端单列，桌面侧栏 + 主内容。 */
.archive {
  padding: 55px 0;
  background:
    linear-gradient(115deg, #071510e8, #0a2b24de, #030706e8),
    url("https://res.cloudinary.com/nzidtogy/image/upload/v1790231839/chapter-01-residence/b67f3769283b/house-scene.webp") center/cover;
}
.reading-index {
  display: none;
}
.archive-card {
  background: var(--panel);
  padding: 26px 20px;
  margin-top: 35px;
}
.archive-card__intro .heading--card {
  margin: 20px 0;
}
.archive-card__description {
  color: var(--muted);
  font-size: 16px;
}
.desktop-break {
  display: none;
}
.archive-card__clues {
  border-top: 1px solid #9c342b66;
  margin-top: 24px;
  padding-top: 16px;
  color: var(--muted);
}
.archive-card__clues .list {
  margin-top: 14px;
}
.archive-card__views {
  display: grid;
  gap: 25px;
  margin-top: 35px;
}
.house-front {
  aspect-ratio: 905/300;
}
.house-front .image {
  max-width: none;
  position: absolute;
  width: 178.453%;
  height: 359%;
  left: 0;
  top: -4%;
  object-fit: cover;
}
.house-roof {
  aspect-ratio: 265/175;
}
.house-roof .image {
  max-width: none;
  position: absolute;
  width: 354.717%;
  height: 358.286%;
  left: -251.698%;
  top: -228%;
  object-fit: cover;
}
.archive-card__roof-slot {
  width: 65%;
  margin: auto;
}
.archive-card__views .caption {
  padding: 16px 2px 0;
}
.archive-card__observations {
  margin-top: 35px;
  display: grid;
  gap: 28px;
  padding-top: 25px;
  border-top: 1px solid #080e0d55;
}
.observation .heading--detail {
  margin: 16px 0;
  color: var(--text);
}
.observation > .text:last-child {
  color: var(--muted);
  font-size: 16px;
}
.archive-card__continue {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 40px;
  padding-top: 25px;
  border-top: 1px solid #080e0d55;
  color: var(--muted);
}
.archive__note {
  font-size: 12px;
  color: var(--muted);
  margin: 24px 16px 0;
}

/* 04 建筑结构：Grid 的二维布局；图像为二维素材。 */
.architecture {
  padding: 55px 0;
  background: var(--surface);
}
.architecture__heading {
  padding-bottom: 26px;
  border-bottom: 1px solid var(--line);
}
.view-navigation {
  display: flex;
  margin-top: 24px;
  background: var(--panel);
}
.view-navigation .link {
  padding: 17px 22px;
  flex: 1;
  font-size: 14px;
}
.view-navigation__item:first-child .link {
  color: var(--gold);
}
.architecture__layout {
  display: grid;
  gap: 24px;
  margin-top: 30px;
}
.architecture__figure {
  position: relative;
  scroll-margin-top: 95px;
}
.architecture__figure .image {
  width: 100%;
}
.architecture__figure .caption {
  position: absolute;
  top: 20px;
  left: 20px;
  pointer-events: none;
}
.structure-notes {
  background: var(--panel);
  padding: 28px 24px;
}
.structure-notes__list {
  margin-top: 30px;
  display: grid;
  gap: 26px;
}
.structure-notes__list .list__item {
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.structure-notes__list .heading--card {
  font-family: "Noto Serif SC", SimSun, serif;
  font-size: 24px;
  margin: 8px 0;
}
.structure-notes__list .list__item > .text:last-child {
  font-size: 16px;
  color: var(--muted);
}
.architecture__note {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 30px;
  background: var(--panel);
  padding: 22px 25px;
}
.architecture__note > .text {
  font-size: 15px;
}

/* 05 建筑细部及观察表。 */
.detail-section {
  padding: 55px 0;
  background: var(--panel);
  position: relative;
  isolation: isolate;
}
.detail-section:before {
  content: "";
  position: absolute;
  inset: 0 0 0 46%;
  z-index: -1;
  opacity: 0.05;
  background: url("https://res.cloudinary.com/nzidtogy/image/upload/v1790231851/chapter-01-residence/cca70fe093b8/tower.webp") center/cover;
}
.detail-section__layout {
  display: grid;
  gap: 35px;
  margin-top: 35px;
}
.detail-card__figure {
  background: var(--panel);
  padding: 18px;
  border: 1px solid transparent;
}
.detail-card__figure--outlined {
  border-color: var(--gold);
}
.tower-roof {
  aspect-ratio: 840/300;
}
.tower-roof .image {
  position: absolute;
  max-width: none;
  width: 228.571%;
  height: 360%;
  left: -63.095%;
  top: 0;
  object-fit: cover;
}
.tower-gallery {
  aspect-ratio: 499/292;
}
.tower-gallery .image {
  position: absolute;
  max-width: none;
  width: 300.601%;
  height: 289.041%;
  left: -100.2%;
  top: -63.356%;
  object-fit: cover;
}
.detail-card .caption {
  margin-top: 25px;
}
.detail-card__text {
  margin-top: 26px;
}
.detail-card__text .heading--card {
  margin: 17px 0;
  font-size: 28px;
}
.detail-card__text > .text:last-child {
  color: var(--muted);
  font-size: 16px;
}
.observation-table {
  background: var(--surface);
  margin-top: 45px;
  padding: 20px 14px;
}
.observation-table .table {
  border-collapse: collapse;
  width: 100%;
  text-align: left;
  font-size: 13px;
  table-layout: fixed;
}
.observation-table .table__heading,
.observation-table .table__cell {
  vertical-align: top;
  padding: 10px 7px;
  font-weight: 400;
}
.observation-table .table__heading:first-child {
  width: 21%;
  color: var(--gold);
}
.observation-table .table__heading:nth-child(2) {
  width: 34%;
}
.observation-table .table__body {
  color: var(--muted);
}

/* 06 修养亭、屋内日常与章节预告。 */
.pavilion {
  padding: 55px 0;
  background:
    linear-gradient(100deg, #081611de, #081611c4),
    url("https://res.cloudinary.com/nzidtogy/image/upload/v1790231839/chapter-01-residence/b67f3769283b/house-scene.webp") center/cover;
}

.pavilion__layout {
  display: grid;
  gap: 35px;
  margin-top: 35px;
}
.pavilion__figure {
  padding: 18px;
  background: var(--panel);
}
.pavilion__figure .image {
  width: 100%;
}
.pavilion__figure .caption {
  margin-top: 22px;
}
.pavilion__article .heading--card {
  font-size: 34px;
}
.pavilion__introduction {
  margin: 22px 0;
  padding-bottom: 25px;
  border-bottom: 1px solid var(--line);
}
.pavilion__article .observation + .observation {
  margin-top: 28px;
}
.room-preview {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--surface);
  padding: 15px;
  margin-top: 40px;
  flex-wrap: wrap;
}
.room-preview .image {
  width: 95px;
  height: 70px;
  object-fit: cover;
}
.room-preview > div {
  flex: 1;
  min-width: 160px;
}
.room-preview__title {
  font: 23px/1.45 var(--display-font);
  margin-top: 10px;
}
.room-preview__action {
  color: var(--gold);
  font-size: 14px;
  margin-left: auto;
  padding: 5px;
}
.inside {
  position: relative;
  background:
    linear-gradient(90deg, #060f0df0, #060f0d99 55%, #060f0d33),
    url("https://res.cloudinary.com/nzidtogy/image/upload/v1790231848/chapter-01-residence/dca4973df74b/room.webp") center/cover;
  padding: 50px 20px;
  min-height: 720px;
}
.inside__content .heading--section {
  margin: 35px 0;
  font-size: 42px;
}
.inside__content > .text:not(.eyebrow) {
  font-size: 17px;
  line-height: 1.75;
  margin-top: 24px;
  max-width: 550px;
}
.inside__hint {
  padding: 20px;
  background: var(--surface);
  margin-top: 50px;
  max-width: 438px;
}
.inside__hint > .text:last-child {
  margin-top: 17px;
}
.next-chapter {
  display: grid;
  background: var(--surface);
}
.next-chapter__image {
  width: 100%;
  max-height: 350px;
  object-fit: cover;
}
.next-chapter__content {
  padding: 35px 20px;
}
.next-chapter__content .heading--section {
  font-size: 32px;
  margin: 22px 0;
}
.next-chapter__content > .text:not(.eyebrow) {
  color: var(--muted);
}
.next-chapter__content .button {
  margin-top: 30px;
}

/* 07 页脚：分组导航保留列表语义。 */
.site-footer {
  padding: 45px 0 30px;
  background: var(--surface);
}
.site-footer__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 35px 24px;
}
.site-footer__brand,
.site-footer__about {
  grid-column: 1/-1;
}
.site-footer__brand .heading--section {
  font-size: 47px;
  color: var(--gold);
  margin: 28px 0 10px;
}
.site-footer__brand > .text:last-child,
.site-footer__about > .text {
  color: var(--muted);
  font-size: 15px;
}
.site-footer .navigation .list {
  margin-top: 24px;
  display: grid;
  gap: 20px;
  color: var(--muted);
  font-size: 14px;
}
.site-footer .status-note {
  font-size: 10px;
  color: var(--muted);
  white-space: nowrap;
}
.site-footer__about > .text {
  margin: 20px 0;
  max-width: 300px;
}
.site-footer__top {
  color: var(--gold);
}
.site-footer__bottom {
  display: flex;
  flex-direction: column;
  gap: 12px;
  border-top: 1px solid var(--line);
  margin-top: 50px;
  padding-top: 25px;
  font-size: 11px;
  letter-spacing: 0.6px;
  color: var(--muted);
}

.view-navigation__list {
  display: flex;
  width: 100%;
}
.view-navigation__item {
  flex: 1;
}
.view-navigation .link {
  display: block;
}
.site-header__inner {
  max-width: 1776px;
}
/* 08 平板：同一份 HTML，通过 min-width 改变布局。 */
@media (min-width: 768px) {
  .container {
    width: 92%;
  }
  .site-header__inner {
    width: 92%;
    justify-content: flex-start;
  }
  .site-header__navigation {
    display: block;
  }
  .site-header__list {
    display: flex;
    gap: 28px;
    font-size: 14px;
  }
  .mobile-menu {
    display: none;
  }
  .hero__scene {
    min-height: 740px;
    padding: 35px 5%;
    background-position: center;
  }
  .hero__title {
    width: 480px;
    margin-top: 55px;
  }
  .hero__introduction {
    font-size: 22px;
  }
  .hero-preview {
    position: absolute;
    right: 4%;
    bottom: 35px;
    margin: 0;
    width: 290px;
    grid-template-columns: 95px 1fr;
  }
  .hero-preview__image {
    width: 95px;
  }
  .hero__statement {
    padding: 25px 4%;
    font-size: 21px;
  }
  .chapter-navigation {
    padding: 0 4%;
  }
  .chapter-navigation__list {
    justify-content: space-between;
    gap: 15px;
  }
  .chapter-navigation__list .link {
    font-size: 16px;
  }
  .archive-card {
    padding: 32px;
  }
  .archive-card__intro {
    display: grid;
    grid-template-columns: 1.8fr 1fr;
    gap: 35px;
  }
  .archive-card__clues {
    margin-top: 18px;
  }
  .archive-card__views {
    grid-template-columns: 3.415fr 1fr;
    gap: 24px;
    align-items: start;
  }
  .archive-card__roof-slot {
    width: 100%;
    margin-top: 25px;
  }
  .archive-card__observations {
    grid-template-columns: 1fr 1fr;
    gap: 45px;
  }
  .archive-card__continue {
    flex-direction: row;
    gap: 45px;
  }
  .archive-card__description {
    font-size: 18px;
  }
  .structure-notes__list {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }
  .architecture__note {
    flex-direction: row;
    gap: 40px;
    align-items: center;
  }
  .architecture__note > .eyebrow {
    flex-shrink: 0;
  }
  .detail-section__layout {
    grid-template-columns: 1.66fr 1fr;
    gap: 28px;
  }
  .detail-card__figure {
    height: 300px;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
  .detail-card .caption {
    margin-top: auto;
    padding-top: 20px;
  }
  .tower-gallery {
    height: 205px;
    aspect-ratio: auto;
  }
  .detail-card__text > .text:last-child {
    font-size: 16px;
  }
  .observation-table {
    padding: 20px 25px;
  }
  .observation-table .table {
    font-size: 16px;
  }
  .pavilion__layout {
    grid-template-columns: 1fr 1fr;
    align-items: start;
    gap: 40px;
  }
  .pavilion__article .heading--card {
    font-size: 32px;
  }
  .pavilion__article .observation > .text:last-child {
    font-size: 15px;
  }
  .room-preview {
    flex-wrap: nowrap;
  }
  .room-preview .image {
    width: 156px;
    height: 95px;
  }
  .room-preview__action {
    white-space: nowrap;
    margin-right: 35px;
  }
  .inside {
    padding: 55px 4%;
    min-height: 740px;
    background:
      linear-gradient(90deg, #060f0df0, #060f0d26 70%, transparent),
      url("https://res.cloudinary.com/nzidtogy/image/upload/v1790231848/chapter-01-residence/dca4973df74b/room.webp") center/cover;
  }
  .inside__content .heading--section {
    font-size: 48px;
  }
  .inside__content > .text:not(.eyebrow) {
    font-size: 20px;
  }
  .inside__hint {
    position: absolute;
    right: 4%;
    bottom: 55px;
    width: 34%;
    font-size: 15px;
  }
  .next-chapter {
    grid-template-columns: 34% 1fr;
  }
  .next-chapter__image {
    height: 100%;
    max-height: none;
    object-fit: cover;
  }
  .next-chapter__content {
    padding: 35px 6%;
  }
  .next-chapter__content .heading--section {
    font-size: 32px;
  }
  .site-footer__layout {
    grid-template-columns: 2fr 1fr 1fr;
    gap: 45px;
  }
  .site-footer__brand {
    grid-column: auto;
  }
  .site-footer__about {
    grid-column: 2/-1;
  }
  .site-footer__bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

/* 09 桌面：以 Figma 1600 px 画板为比例依据，保留内容自然高度防止裁字。 */
@media (min-width: 1200px) {
  .page__body {
    font-size: 18px;
  }
  .eyebrow {
    font-size: 13px;
  }
  .site-header__inner {
    height: 72px;
    min-height: 72px;
    width: 92.5%;
    gap: 58px;
  }
  .site-header__brand {
    font-size: 16px;
  }
  .site-header__list {
    gap: 58px;
    font-size: 16px;
  }
  .site-header__caption {
    display: block;
    font-size: 16px;
  }
  .hero__scene {
    height: 814px;
    min-height: 814px;
    padding: 0;
    background-image:
      linear-gradient(90deg, #060f0d 0%, #060f0d26 42%, transparent 60%),
      url("https://res.cloudinary.com/nzidtogy/image/upload/v1790231839/chapter-01-residence/b67f3769283b/house-scene.webp");
    background-size:
      100% 100%,
      cover;
    background-position:
      0 0,
      center;
  }
  .hero__breadcrumb {
    position: absolute;
    left: 4.5%;
    top: 44px;
    font-size: 13px;
  }
  .hero__title {
    position: absolute;
    left: 4.5%;
    top: 132px;
    margin: 0;
    width: 543px;
  }
  .hero__title-enter {
    width: 264px;
    height: 148px;
    margin: 0;
  }
  .hero__title-residence {
    width: 460px;
    height: 129px;
    margin: 8px 0 0 83px;
  }
  .hero__introduction {
    position: absolute;
    left: 5%;
    top: 487px;
    margin: 0;
    font-size: 24px;
    line-height: 1.55;
  }
  .hero__button {
    position: absolute;
    left: 5%;
    top: 610px;
    margin: 0;
    min-width: 196px;
  }
  .hero__scroll {
    position: absolute;
    left: 5%;
    top: 727px;
    margin: 0;
  }
  .hero-preview {
    width: 340px;
    height: 268px;
    right: 4.125%;
    top: 508px;
    bottom: auto;
    grid-template-columns: 118px 1fr;
    gap: 16px;
    padding: 16px;
  }
  .hero-preview__image {
    width: 118px;
    height: 159px;
  }
  .hero-preview__title {
    font-size: 24px;
    margin: 24px 0 18px;
    line-height: 1.55;
  }
  .hero-preview__content > .text:last-child {
    font-size: 17px;
    line-height: 1.47;
  }
  .hero-preview__link {
    position: absolute;
    left: 18px;
    right: 18px;
    bottom: 20px;
    padding-top: 17px;
  }
  .hero__statement {
    height: 98px;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 0 4.5%;
    font-size: 24px;
  }
  .hero__statement > .eyebrow {
    font-size: 12px;
  }
  .chapter-navigation {
    height: 86px;
    padding: 0 4.5%;
    gap: 0;
  }
  .chapter-navigation__label {
    display: block;
    flex: 0 0 15%;
  }
  .chapter-navigation__list {
    overflow: visible;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 30px;
  }
  .chapter-navigation__list .link {
    height: 76px;
    font-size: 18px;
    width: max-content;
    min-width: 150px;
  }
  .archive {
    min-height: 1400px;
    padding: 60px 0 45px;
  }
  .archive__layout {
    display: grid;
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 34px;
  }
  .reading-index {
    display: block;
    margin-top: 150px;
    font-size: 16px;
    color: var(--muted);
  }
  .reading-index .navigation {
    margin-top: 22px;
  }
  .reading-index .list__item {
    margin-bottom: 22px;
  }
  .reading-index__current {
    color: var(--gold);
  }
  .reading-index__note {
    border-top: 1px solid var(--line);
    padding-top: 24px;
    margin-top: 30px;
    font-size: 15px;
  }
  .archive__main > .section-heading {
    padding-left: 16px;
  }
  .section-heading .heading--section {
    font-size: 46px;
  }
  .archive-card {
    min-height: 1066px;
    margin-top: 53px;
    padding: 32px 34px;
  }
  .archive-card__intro {
    grid-template-columns: minmax(0, 1.9fr) minmax(0, 1fr);
    gap: 40px;
  }
  .archive-card__intro .heading--card {
    font-size: 35px;
    margin: 19px 0 23px;
  }
  .archive-card__description {
    font-size: 20px;
    line-height: 1.55;
  }
  .desktop-break {
    display: block;
  }
  .archive-card__clues {
    margin-top: 18px;
    padding: 20px 25px 0;
    font-size: 19px;
  }
  .archive-card__views {
    margin-top: 62px;
    gap: 24px;
  }
  .archive-card__roof-slot {
    margin-top: 37px;
  }
  .archive-card__views .caption {
    padding-top: 22px;
    font-size: 13px;
  }
  .archive-card__roof .caption {
    padding-top: 34px;
  }
  .archive-card__observations {
    padding-top: 38px;
    margin-top: 34px;
    gap: 9%;
    min-height: 260px;
  }
  .observation .heading--detail {
    font-size: 28px;
  }
  .observation > .text:last-child {
    font-size: 18px;
    line-height: 1.55;
  }
  .archive-card__continue {
    margin-top: 20px;
    min-height: 85px;
    align-items: center;
    font-size: 19px;
    gap: 110px;
  }
  .archive__note {
    font-size: 14px;
    margin-top: 29px;
  }
  .architecture {
    min-height: 1370px;
    padding: 50px 0;
  }
  .architecture__heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 20px;
  }
  .architecture__heading .heading--section {
    font-size: 48px;
  }
  .view-navigation {
    width: 29.6%;
    margin: 0;
  }
  .view-navigation .link {
    padding: 20px 23px;
    font-size: 18px;
  }
  .architecture__layout {
    grid-template-columns: minmax(0, 982fr) minmax(0, 435fr);
    gap: 53px;
    margin-top: 40px;
  }
  .architecture__figure .image {
    height: 966px;
    object-fit: cover;
  }
  .structure-notes {
    padding: 29px 28px;
    min-height: 966px;
  }
  .structure-notes__list {
    grid-template-columns: 1fr;
    gap: 26px;
    margin-top: 34px;
  }
  .structure-notes__list .heading--card {
    font-size: 27px;
  }
  .structure-notes__list .list__item > .text:last-child {
    font-size: 17px;
    line-height: 1.55;
  }
  .architecture__note {
    min-height: 92px;
    margin-top: 39px;
    gap: 90px;
  }
  .architecture__note > .text {
    font-size: 18px;
  }
  .detail-section {
    min-height: 1340px;
    padding: 64px 0 75px;
  }
  .detail-section .section-heading .heading--section {
    font-size: 43px;
  }
  .section-heading__description {
    font-size: 20px;
    margin-top: 20px;
  }
  .detail-section__layout {
    grid-template-columns: minmax(0, 890fr) minmax(0, 536fr);
    gap: 43px;
    margin-top: 57px;
  }
  .detail-card__figure {
    height: 421px;
    padding: 43px 21px 22px;
  }
  .detail-section__item:nth-child(2) .detail-card__figure {
    padding: 22px 18px;
  }
  .tower-roof {
    height: 300px;
    aspect-ratio: auto;
  }
  .tower-gallery {
    height: 292px;
  }
  .detail-card .caption {
    font-size: 13px;
    padding-top: 0;
  }
  .detail-card__text {
    margin-top: 43px;
  }
  .detail-card__text .heading--card {
    font-size: 28px;
    margin: 16px 0;
  }
  .detail-card__text > .text:last-child {
    font-size: 18px;
    line-height: 1.55;
  }
  .observation-table {
    height: 244px;
    margin-top: 127px;
    padding: 20px 25px;
  }
  .observation-table .table {
    font-size: 17px;
    line-height: 1.55;
  }
  .observation-table .table__heading,
  .observation-table .table__cell {
    padding: 8px 0;
  }
  .observation-table .table__heading:first-child {
    width: 18%;
  }
  .observation-table .table__heading:nth-child(2) {
    width: 36%;
  }
  .pavilion {
    min-height: 1120px;
    padding: 61px 0 54px;
  }
  .pavilion .section-heading > .eyebrow {
    margin-bottom: 28px;
  }
  .pavilion__title {
    height: 92px;
  }
  .pavilion__layout {
    grid-template-columns: minmax(0, 673fr) minmax(0, 729fr);
    gap: 67px;
    margin-top: 63px;
  }
  .pavilion__figure {
    padding: 20px 18px 24px;
    min-height: 602px;
  }
  .pavilion__figure .image {
    height: 515px;
    object-fit: cover;
  }
  .pavilion__figure .caption {
    margin: 22px 10px 0;
    font-size: 13px;
  }
  .pavilion__article {
    padding-top: 7px;
  }
  .pavilion__article .heading--card {
    font-size: 40px;
  }
  .pavilion__introduction {
    font-size: 20px;
    line-height: 1.65;
    margin: 28px 0;
    padding-bottom: 28px;
  }
  .pavilion__article .observation > .text:last-child {
    font-size: 18px;
  }
  .room-preview {
    margin-top: 74px;
    height: 125px;
    gap: 29px;
  }
  .room-preview__title {
    font-size: 27px;
  }
  .room-preview__action {
    font-size: 18px;
    margin-right: 90px;
  }
  .inside {
    height: 790px;
    min-height: 790px;
    padding: 61px 4.125%;
    background-position: center;
  }
  .inside__content .heading--section {
    font-size: 51px;
    margin: 60px 0 50px;
  }
  .inside__content > .text:not(.eyebrow) {
    font-size: 22px;
    line-height: 1.55;
    margin-top: 30px;
  }
  .inside__hint {
    right: 4.125%;
    bottom: 81px;
    width: 438px;
    font-size: 18px;
  }
  .next-chapter {
    grid-template-columns: 33.75% 1fr;
    min-height: 337px;
  }
  .next-chapter__content {
    padding: 39px 6.22% 35px;
  }
  .next-chapter__content .heading--section {
    font-size: 36px;
    margin: 24px 0 32px;
  }
  .next-chapter__content > .text:not(.eyebrow) {
    font-size: 20px;
  }
  .next-chapter__content .button {
    margin-top: 30px;
  }
  .site-footer {
    min-height: 493px;
    padding: 43px 0 50px;
  }
  .site-footer__layout {
    grid-template-columns: 40% 17% 17% minmax(0, 1fr);
    gap: 2.5%;
  }
  .site-footer__brand .heading--section {
    font-size: 57px;
    margin: 36px 0 4px;
  }
  .site-footer__brand > .text:last-child {
    font-size: 17px;
  }
  .site-footer__about {
    grid-column: auto;
  }
  .site-footer .navigation .list {
    font-size: 17px;
    gap: 23px;
    margin-top: 24px;
  }
  .site-footer__about > .text {
    font-size: 16px;
  }
  .site-footer__bottom {
    margin-top: 72px;
    padding-top: 25px;
    font-size: 13px;
  }
}
/* 小桌面：继续沿用 min-width，不混写 max-width。 */
@media (min-width: 1200px) {
  .site-header__inner,
  .site-header__list {
    gap: 38px;
  }
  .hero__title {
    transform: scale(0.86);
    transform-origin: top left;
  }
  .hero-preview {
    width: 310px;
  }
  .hero__statement {
    font-size: 20px;
  }
  .hero__statement > .eyebrow {
    font-size: 10px;
  }
  .chapter-navigation__list {
    gap: 12px;
  }
  .chapter-navigation__list .link {
    font-size: 16px;
    min-width: 130px;
  }
  .archive__layout {
    grid-template-columns: 130px minmax(0, 1fr);
    gap: 24px;
  }
  .archive-card__description {
    font-size: 18px;
  }
  .archive-card__intro .heading--card {
    font-size: 30px;
  }
  .archive-card__continue {
    gap: 35px;
  }
  .section-heading .heading--section {
    font-size: 40px;
  }
  .architecture__layout {
    gap: 32px;
  }
  .architecture__figure .image {
    height: 850px;
  }
  .structure-notes {
    min-height: 850px;
  }
  .structure-notes__list .list__item > .text:last-child {
    font-size: 15px;
  }
  .structure-notes__list .heading--card {
    font-size: 24px;
  }
  .pavilion__layout {
    gap: 40px;
  }
  .pavilion__article .heading--card {
    font-size: 34px;
  }
  .pavilion__introduction {
    font-size: 18px;
  }
  .inside__hint {
    width: 350px;
  }
  .site-footer__brand .heading--section {
    font-size: 50px;
  }
}
/* 宽桌面：在小桌面基础上逐步增强。 */
@media (min-width: 1451px) {
  .site-header__inner {
    row-gap: 58px;
    column-gap: 58px;
  }
  .site-header__list {
    row-gap: 58px;
    column-gap: 58px;
  }
  .hero__title {
    transform: none;
    transform-origin: 50% 50%;
  }
  .hero-preview {
    width: 340px;
  }
  .hero__statement {
    font-size: 24px;
  }
  .hero__statement > .eyebrow {
    font-size: 12px;
  }
  .chapter-navigation__list {
    row-gap: 30px;
    column-gap: 30px;
  }
  .chapter-navigation__list .link {
    font-size: 18px;
    min-width: 150px;
  }
  .archive__layout {
    grid-template-columns: 150px minmax(0px, 1fr);
    row-gap: 34px;
    column-gap: 34px;
  }
  .archive-card__description {
    font-size: 20px;
  }
  .archive-card__intro .heading--card {
    font-size: 35px;
  }
  .archive-card__continue {
    row-gap: 110px;
    column-gap: 110px;
  }
  .section-heading .heading--section {
    font-size: 46px;
  }
  .architecture__layout {
    row-gap: 53px;
    column-gap: 53px;
  }
  .architecture__figure .image {
    height: 966px;
  }
  .structure-notes {
    min-height: 966px;
  }
  .structure-notes__list .list__item > .text:last-child {
    font-size: 17px;
  }
  .structure-notes__list .heading--card {
    font-size: 27px;
  }
  .pavilion__layout {
    row-gap: 67px;
    column-gap: 67px;
  }
  .pavilion__article .heading--card {
    font-size: 40px;
  }
  .pavilion__introduction {
    font-size: 20px;
  }
  .inside__hint {
    width: 438px;
  }
  .site-footer__brand .heading--section {
    font-size: 57px;
  }
}

/* 10 建筑拆解：透明素材、错峰运动、渐进标注；仍为 HTML + CSS + SVG。 */
.building-explode {
  margin: 36px 0 0;
  min-width: 0;
  --motion-ease: cubic-bezier(0.16, 1, 0.3, 1);
}
.architecture__figure .building-explode,
.pavilion__figure .building-explode {
  margin: 0;
}
.building-explode__name {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--gold);
  font: 28px/1.5 var(--display-font);
}
.building-explode__tag {
  font: 10px/1.5 var(--body-font);
  letter-spacing: 3px;
  color: var(--muted);
  border-left: 1px solid var(--line);
  padding-left: 16px;
}
.building-explode__instruction {
  font-size: 13px;
  color: var(--muted);
  margin: 10px 0 20px;
}
.building-explode__body {
  position: relative;
  background: radial-gradient(
    ellipse at 48% 46%,
    #15382c 0%,
    #0a1e18 40%,
    #040b08 86%
  );
  border: 1px solid #c9a86a24;
  isolation: isolate;
  transition:
    border-color 0.5s,
    box-shadow 0.7s;
}
.building-explode__body:has(.building-explode__toggle:checked) {
  border-color: #c9a86a70;
  box-shadow:
    inset 0 0 90px #c9a86a06,
    0 20px 55px #0003;
}
.building-explode__toggle {
  position: absolute;
  left: 16px;
  top: 16px;
  width: 1px;
  height: 1px;
  opacity: 0;
}
.building-explode__canvas {
  position: relative;
  display: block;
  min-height: 480px;
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  isolation: isolate;
}
.building-explode__canvas::before {
  content: "";
  position: absolute;
  left: 10%;
  right: 10%;
  height: 100px;
  bottom: 58px;
  border: 1px solid #c9a86a28;
  border-radius: 50%;
  background: radial-gradient(ellipse, #c9a86a0e, transparent 65%);
  transform: scaleY(0.34);
  opacity: 0.5;
  transition:
    transform 1.3s var(--motion-ease),
    opacity 0.7s;
  pointer-events: none;
}
.building-explode__canvas::after {
  content: "";
  position: absolute;
  left: 10%;
  right: 10%;
  top: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, #e7c77d99, transparent);
  box-shadow: 0 0 18px #d9b97544;
  opacity: 0;
  pointer-events: none;
}
.building-explode__toggle:checked + .building-explode__canvas::before {
  transform: scaleY(0.5) scaleX(1.05);
  opacity: 0.9;
}
.building-explode__toggle:checked + .building-explode__canvas::after {
  animation: building-scan 1.6s 0.12s ease-out both;
}
.building-explode__drawing {
  position: absolute;
  left: 8%;
  top: 20px;
  width: 84%;
  height: calc(100% - 80px);
  overflow: visible;
  transition:
    width 1.15s var(--motion-ease),
    left 1.15s var(--motion-ease);
}
.building-explode__layer {
  transform: translate(0, 0);
  transform-origin: center;
  transition:
    transform 1.15s var(--motion-ease),
    filter 0.8s;
  filter: drop-shadow(0 6px 5px #0002);
}
.building-explode__toggle:checked
  + .building-explode__canvas
  .building-explode__layer {
  filter: drop-shadow(0 18px 13px #0007);
}
.building-explode__toggle:focus-visible + .building-explode__canvas {
  outline: 2px solid var(--gold);
  outline-offset: 5px;
}
.building-explode__action {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  white-space: nowrap;
  min-height: 42px;
  padding: 10px 20px;
  border: 1px solid #c9a86a38;
  border-radius: 30px;
  background: #081510d9;
  backdrop-filter: blur(8px);
  font-size: 12px;
  letter-spacing: 1px;
  color: #d7bb7b;
  transition:
    background 0.3s,
    border-color 0.3s,
    box-shadow 0.3s;
}
.building-explode__action::before {
  content: "";
  width: 5px;
  height: 5px;
  background: var(--gold);
  border-radius: 50%;
  box-shadow: 0 0 10px #d8ba7870;
}
.building-explode__canvas:hover .building-explode__action {
  background: #173c2ee6;
  border-color: #e7c77daa;
  box-shadow: 0 0 22px #c9a86a12;
}
.building-explode__action--open {
  display: none;
}
.building-explode__toggle:checked
  + .building-explode__canvas
  .building-explode__action--closed {
  display: none;
}
.building-explode__toggle:checked
  + .building-explode__canvas
  .building-explode__action--open {
  display: flex;
}
.building-explode__toggle:checked
  + .building-explode__canvas
  .building-explode__drawing {
  left: 0;
  width: 100%;
}
.building-explode__notes {
  visibility: hidden;
  position: relative;
  display: none;
  padding: 0 16px 26px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px 16px;
  pointer-events: auto;
}
.building-explode__toggle:checked ~ .building-explode__notes {
  visibility: visible;
  display: grid;
}
.building-explode__note {
  display: flex;
  gap: 10px;
  position: relative;
  opacity: 0;
  transform: translateX(12px);
  transition:
    opacity 0.22s,
    transform 0.3s;
}
.building-explode__toggle:checked
  ~ .building-explode__notes
  .building-explode__note {
  opacity: 1;
  transform: translateX(0);
  animation: building-note-in 0.65s var(--motion-ease) both;
}
.building-explode__number {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border: 1px solid #c9a86a50;
  border-radius: 50%;
  color: #d8bb7b;
  font: 10px/1 var(--body-font);
}
.building-explode__part-name {
  color: #ead6a6;
  font-size: 13px;
  line-height: 1.5;
}
.building-explode__part-description {
  color: #a5b5a9;
  font-size: 11px;
  line-height: 1.7;
  margin-top: 8px;
}
.building-explode__footnote {
  font-size: 10px;
  letter-spacing: 1px;
  color: var(--muted);
  margin-top: 14px;
}
.building-explode--house .building-explode__canvas {
  min-height: 370px;
}
.building-explode--house .building-explode__drawing {
  top: 30px;
  height: calc(100% - 95px);
}
.building-explode--pavilion .building-explode__canvas {
  min-height: 500px;
}
@keyframes building-scan {
  0% {
    top: 12%;
    opacity: 0;
  }
  16% {
    opacity: 0.65;
  }
  75% {
    opacity: 0.25;
  }
  100% {
    top: 84%;
    opacity: 0;
  }
}
@keyframes building-note-in {
  from {
    opacity: 0;
    transform: translateX(12px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}
@media (min-width: 768px) {
  .building-explode__canvas {
    min-height: 700px;
  }
  .building-explode--house .building-explode__canvas {
    min-height: 430px;
  }
  .building-explode__part-name {
    font-size: 16px;
  }
  .building-explode__part-description {
    font-size: 13px;
  }
  .building-explode--pavilion .building-explode__part-name {
    font-size: 13px;
  }
  .building-explode--pavilion .building-explode__part-description {
    font-size: 11px;
  }
}
@media (min-width: 1200px) {
  .building-explode__canvas {
    min-height: 820px;
  }
  .building-explode--house .building-explode__canvas {
    min-height: 520px;
  }
  .building-explode--pavilion .building-explode__canvas {
    min-height: 650px;
  }
  .building-explode__notes {
    position: absolute;
    right: 4%;
    top: 8%;
    bottom: 14%;
    width: 32%;
    padding: 0;
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    gap: 24px;
  }
  .building-explode__toggle:checked ~ .building-explode__notes {
    display: flex;
  }
  .building-explode__toggle:checked
    + .building-explode__canvas
    .building-explode__drawing {
    left: 0;
    width: 61%;
  }
  .building-explode__note::before {
    content: "";
    position: absolute;
    height: 1px;
    background: linear-gradient(90deg, transparent, #c9a86a99);
    width: 42px;
    left: -52px;
    top: 12px;
    transform-origin: right;
    transform: scaleX(0);
    transition: transform 0.7s var(--motion-ease);
  }
  .building-explode__toggle:checked
    ~ .building-explode__notes
    .building-explode__note::before {
    transform: scaleX(1);
    transition-delay: 0.55s;
  }
  .building-explode--pavilion .building-explode__part-name {
    font-size: 16px;
  }
  .building-explode--pavilion .building-explode__part-description {
    font-size: 13px;
  }
}
.building-explode--house .building-explode__layer--1 {
  transition-delay: 0.13s;
}
.building-explode--house
  .building-explode__toggle:checked
  + .building-explode__canvas
  .building-explode__layer--1 {
  transform: translate(-10px, -90px);
  transition-delay: 0.12s;
}
.building-explode--house .building-explode__layer--2 {
  transition-delay: 0.065s;
}
.building-explode--house
  .building-explode__toggle:checked
  + .building-explode__canvas
  .building-explode__layer--2 {
  transform: translate(8px, 0px);
  transition-delay: 0.21s;
}
.building-explode--house .building-explode__layer--3 {
  transition-delay: 0s;
}
.building-explode--house
  .building-explode__toggle:checked
  + .building-explode__canvas
  .building-explode__layer--3 {
  transform: translate(0px, 68px);
  transition-delay: 0.3s;
}
.building-explode--tower .building-explode__layer--1 {
  transition-delay: 0.195s;
}
.building-explode--tower
  .building-explode__toggle:checked
  + .building-explode__canvas
  .building-explode__layer--1 {
  transform: translate(-20px, -145px);
  transition-delay: 0.12s;
}
.building-explode--tower .building-explode__layer--2 {
  transition-delay: 0.13s;
}
.building-explode--tower
  .building-explode__toggle:checked
  + .building-explode__canvas
  .building-explode__layer--2 {
  transform: translate(12px, -48px);
  transition-delay: 0.21s;
}
.building-explode--tower .building-explode__layer--3 {
  transition-delay: 0.065s;
}
.building-explode--tower
  .building-explode__toggle:checked
  + .building-explode__canvas
  .building-explode__layer--3 {
  transform: translate(-9px, 48px);
  transition-delay: 0.3s;
}
.building-explode--tower .building-explode__layer--4 {
  transition-delay: 0s;
}
.building-explode--tower
  .building-explode__toggle:checked
  + .building-explode__canvas
  .building-explode__layer--4 {
  transform: translate(5px, 130px);
  transition-delay: 0.39s;
}
.building-explode--pavilion .building-explode__layer--1 {
  transition-delay: 0.195s;
}
.building-explode--pavilion
  .building-explode__toggle:checked
  + .building-explode__canvas
  .building-explode__layer--1 {
  transform: translate(-12px, -102px);
  transition-delay: 0.12s;
}
.building-explode--pavilion .building-explode__layer--2 {
  transition-delay: 0.13s;
}
.building-explode--pavilion
  .building-explode__toggle:checked
  + .building-explode__canvas
  .building-explode__layer--2 {
  transform: translate(9px, -25px);
  transition-delay: 0.21s;
}
.building-explode--pavilion .building-explode__layer--3 {
  transition-delay: 0.065s;
}
.building-explode--pavilion
  .building-explode__toggle:checked
  + .building-explode__canvas
  .building-explode__layer--3 {
  transform: translate(-5px, 44px);
  transition-delay: 0.3s;
}
.building-explode__toggle:checked
  ~ .building-explode__notes
  .building-explode__note:nth-child(1) {
  animation-delay: 0.5s;
}
.building-explode__toggle:checked
  ~ .building-explode__notes
  .building-explode__note:nth-child(2) {
  animation-delay: 0.6s;
}
.building-explode__toggle:checked
  ~ .building-explode__notes
  .building-explode__note:nth-child(3) {
  animation-delay: 0.7s;
}
.building-explode__toggle:checked
  ~ .building-explode__notes
  .building-explode__note:nth-child(4) {
  animation-delay: 0.8s;
}

@media (prefers-reduced-motion: reduce) {
  .page {
    scroll-behavior: auto;
  }
  *,
  *:before,
  *:after {
    transition: none !important;
    animation: none !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  .building-explode__canvas::after {
    display: none;
  }
  .building-explode__note {
    animation: none !important;
    transition: none !important;
  }
}

/* 11. 部件细读：原生 details 保存选择，:has 将说明与图层对应。 */
.building-explode__note-content {
  min-width: 0;
  flex: 1;
}
.part-reading__summary {
  cursor: pointer;
  min-height: 44px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  list-style: none;
  border-radius: 4px;
}
.part-reading__summary::-webkit-details-marker {
  display: none;
}
.part-reading__summary:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 5px;
}
.part-reading__hint {
  color: #bda779;
  font-size: 10px;
  letter-spacing: 1px;
}
.part-reading__hint::before {
  content: "＋ ";
}
.part-reading[open] .part-reading__hint::before {
  content: "－ ";
}
.part-reading__content {
  border-left: 1px solid #c9a86a70;
  padding: 2px 0 2px 12px;
  margin: 12px 0;
}
.part-reading__label {
  color: #e1c990;
  font-size: 11px;
  letter-spacing: 2px;
  margin: 8px 0 4px;
}
.part-reading__text {
  font-size: 12px;
  color: #c0ccc3;
  line-height: 1.8;
}
.building-explode__note:has(.part-reading[open]) .building-explode__number {
  background: #c9a86a;
  color: #10251b;
  box-shadow: 0 0 18px #c9a86a33;
}
.building-explode__notes {
  grid-template-columns: minmax(0, 1fr);
}
.building-explode__piece {
  transition:
    opacity 0.35s,
    filter 0.35s;
}
.building-explode__body:has(.part-reading[open]) .building-explode__piece {
  opacity: 0.45;
  filter: saturate(0.45);
}
.building-explode__body:has(
    .building-explode__note:nth-child(1) .part-reading[open]
  )
  .building-explode__layer--1
  .building-explode__piece {
  opacity: 1;
  filter: drop-shadow(0 0 6px #e5c68188);
}
.building-explode__body:has(
    .building-explode__note:nth-child(2) .part-reading[open]
  )
  .building-explode__layer--2
  .building-explode__piece {
  opacity: 1;
  filter: drop-shadow(0 0 6px #e5c68188);
}
.building-explode__body:has(
    .building-explode__note:nth-child(3) .part-reading[open]
  )
  .building-explode__layer--3
  .building-explode__piece {
  opacity: 1;
  filter: drop-shadow(0 0 6px #e5c68188);
}
.building-explode__body:has(
    .building-explode__note:nth-child(4) .part-reading[open]
  )
  .building-explode__layer--4
  .building-explode__piece {
  opacity: 1;
  filter: drop-shadow(0 0 6px #e5c68188);
}

/* 合拢时恢复完整图像；再次展开时保留上次细读的位置。 */
.building-explode__body:has(.building-explode__toggle:not(:checked))
  .building-explode__piece {
  opacity: 1;
  filter: none;
}
@media (min-width: 768px) {
  .building-explode__notes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (min-width: 1200px) {
  .building-explode__body:has(.building-explode__toggle:checked) {
    display: grid;
    grid-template-columns: 62% minmax(0, 1fr);
  }
  .building-explode__notes {
    display: none;
    position: relative;
    inset: auto;
    width: auto;
    padding: 28px 24px 70px 0;
    gap: 22px;
  }
  .building-explode__toggle:checked ~ .building-explode__notes {
    display: flex;
  }
  .building-explode__toggle:checked
    + .building-explode__canvas
    .building-explode__drawing {
    width: 100%;
  }
  .building-explode__note::before {
    width: 22px;
    left: -30px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .building-explode__piece {
    transition: none;
  }
}

/* 12. 整页探索：原生表单 / details；变量集中管理文字、边框与选中状态。 */
:root {
  --interaction-bg: #0b1c16;
  --interaction-text: #f2ebdd;
  --interaction-muted: #c2cec5;
  --interaction-accent: #e5c789;
  --interaction-border: #7f917e;
  --interaction-selected: #213c2c;
  --interaction-gap: 20px;
}
.explore-route,
.field-journal {
  padding: 40px 0;
  background: var(--ink);
}
.interaction-surface {
  background: var(--interaction-bg);
  color: var(--interaction-text);
  border: 1px solid var(--interaction-border);
  padding: 24px;
}
.interaction-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--interaction-gap);
  flex-wrap: wrap;
}
.interaction-title {
  font: 30px/1.45 var(--display-font);
  color: var(--interaction-accent);
  margin: 10px 0 18px;
}
.interaction-surface .eyebrow,
.interaction-note {
  color: var(--interaction-muted);
}
.interaction-note {
  font-size: 12px;
  line-height: 1.8;
  margin-top: 14px;
}
.choice-group {
  border: 0;
  min-width: 0;
  margin-top: 20px;
}
.choice-group__legend {
  color: var(--interaction-muted);
  font-size: 14px;
  margin-bottom: 16px;
}
.choice-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.choice {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  cursor: pointer;
  font-size: 14px;
  line-height: 1.7;
}
.choice__input {
  accent-color: var(--interaction-accent);
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
  cursor: pointer;
}
.choice__input:focus-visible,
.journal-note:focus-visible,
.journal-reset:focus-visible,
.room-clue__summary:focus-visible,
.reading-settings__summary:focus-visible {
  outline: 3px solid var(--interaction-accent);
  outline-offset: 5px;
}
.choice--card {
  padding: 14px 18px;
  border: 1px solid var(--interaction-border);
  flex: 1 1 170px;
}
.choice--card:has(:checked) {
  background: var(--interaction-selected);
  border: 2px solid var(--interaction-accent);
  padding: 13px 17px;
}
.route-panel {
  display: none;
  border-top: 1px solid var(--interaction-border);
  padding-top: 22px;
  margin-top: 22px;
}
.route-picker:has(#route-space:checked) .route-panel--space,
.route-picker:has(#route-detail:checked) .route-panel--detail,
.route-picker:has(#route-life:checked) .route-panel--life {
  display: block;
}
.route-panel__sequence {
  font-size: 22px;
  color: var(--interaction-accent);
  margin-bottom: 10px;
}
.route-panel .button {
  margin-top: 20px;
  font-size: 14px;
}
.reading-settings {
  min-width: 140px;
}
.reading-settings__summary {
  cursor: pointer;
  padding: 12px;
  border: 1px solid var(--interaction-border);
  font-size: 13px;
}
.reading-settings__options {
  padding: 12px 0;
}
.detail-lens {
  margin: 40px 0;
  scroll-margin-top: 120px;
}
.lens-guide {
  margin: 8px 0 14px;
}
.lens-window {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/11;
  background: #07120e;
  border: 1px solid var(--interaction-border);
}
.lens-window__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.75s cubic-bezier(0.16, 1, 0.3, 1);
}
.lens-picker:has(#lens-roof:checked) .lens-window__image {
  transform: scale(1.85);
  transform-origin: 50% 12%;
}
.lens-picker:has(#lens-gallery:checked) .lens-window__image {
  transform: scale(2.1);
  transform-origin: 50% 60%;
}
.lens-window__badge {
  position: absolute;
  left: 14px;
  bottom: 14px;
  padding: 8px 12px;
  background: var(--interaction-bg);
  color: var(--interaction-text);
  border: 1px solid var(--interaction-border);
  font-size: 12px;
}
.lens-copy--whole,
.lens-copy--roof,
.lens-copy--gallery {
  display: none;
}
.lens-picker:has(#lens-whole:checked) .lens-copy--whole,
.lens-picker:has(#lens-roof:checked) .lens-copy--roof,
.lens-picker:has(#lens-gallery:checked) .lens-copy--gallery {
  display: block;
}
.lens-caption {
  padding-top: 16px;
  font-size: 14px;
  color: var(--interaction-text);
}
.lens-window__guides {
  display: none;
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.lens-picker:has(#lens-guide:checked) .lens-window__guides {
  display: block;
}
.lens-window__horizontal {
  position: absolute;
  top: 44%;
  left: 8%;
  right: 8%;
  border-top: 2px dashed #fff4d3;
  filter: drop-shadow(0 1px 2px #000);
}
.lens-window__vertical {
  position: absolute;
  left: 50%;
  top: 8%;
  bottom: 8%;
  border-left: 2px dashed #fff4d3;
  filter: drop-shadow(0 1px 2px #000);
}
.lens-window__guide-label {
  position: absolute;
  right: 12px;
  top: 12px;
  background: var(--interaction-bg);
  color: var(--interaction-text);
  padding: 8px;
  font-size: 12px;
}
.inside {
  height: auto;
  display: grid;
  gap: 36px;
  align-items: start;
}
.room-reading {
  min-width: 0;
  margin-top: 20px;
}
.room-reading .interaction-title {
  font-size: 26px;
}
.room-clue {
  border-top: 1px solid var(--interaction-border);
}
.room-clue__summary {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 62px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
}
.room-clue__summary::-webkit-details-marker {
  display: none;
}
.room-clue__number {
  color: var(--interaction-accent);
  font-size: 12px;
}
.room-clue__sign {
  margin-left: auto;
}
.room-clue__sign::before {
  content: "＋";
}
.room-clue[open] .room-clue__sign::before {
  content: "−";
}
.room-clue__content {
  padding: 0 0 20px 28px;
  font-size: 14px;
  color: var(--interaction-muted);
}
.room-clue__question {
  margin-top: 14px;
  color: var(--interaction-text);
  border-left: 2px solid var(--interaction-accent);
  padding-left: 12px;
}
.journal-list {
  display: grid;
  gap: 12px;
}
.journal-item {
  padding: 16px;
  border: 1px solid var(--interaction-border);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.journal-item:has(:checked) {
  background: var(--interaction-selected);
}
.journal-item__link {
  color: var(--interaction-accent);
  font-size: 13px;
  padding: 8px 0;
}
.journal-form {
  counter-reset: explored;
}
.journal-form .choice__input:checked {
  counter-increment: explored;
}
.journal-progress {
  margin: 20px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  color: var(--interaction-accent);
}
.journal-progress__count::before {
  content: counter(explored) " / 3";
  font-size: 24px;
}
.journal-progress__done {
  display: none;
}
.journal-form:has(#visit-house:checked):has(#visit-tower:checked):has(
    #visit-room:checked
  )
  .journal-progress__done {
  display: inline;
}
.journal-form:has(#visit-house:checked):has(#visit-tower:checked):has(
    #visit-room:checked
  )
  .journal-progress__working {
  display: none;
}
.journal-label {
  display: block;
  margin-bottom: 12px;
  font-size: 15px;
}
.journal-note {
  display: block;
  width: 100%;
  resize: vertical;
  min-height: 140px;
  border: 1px solid var(--interaction-border);
  background: #07120e;
  color: var(--interaction-text);
  padding: 16px;
  font: 16px/1.8 var(--body-font);
  border-radius: 0;
}
.journal-note::placeholder {
  color: var(--interaction-muted);
  opacity: 1;
}
.journal-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 12px;
}
.journal-reset {
  cursor: pointer;
  background: transparent;
  color: var(--interaction-accent);
  font: 14px/1.5 var(--body-font);
  min-height: 44px;
}
.journal-footer .interaction-note {
  max-width: 640px;
}
/* 选中状态同时使用原生圆点 / 勾号、边框与文字，不单靠颜色。 */
.page__body:has(#reading-contrast:checked) {
  --muted: #e4eae4;
  --gold: #f4d994;
  --interaction-muted: #e4eae4;
  --interaction-border: #b7c9b5;
  --interaction-accent: #f4d994;
}
.page__body:has(#reading-contrast:checked) .text,
.page__body:has(#reading-contrast:checked) .caption,
.page__body:has(#reading-contrast:checked) .part-reading__text {
  color: #f5f5e9;
}
.page__body:has(#reading-contrast:checked) .hero__introduction,
.page__body:has(#reading-contrast:checked) .inside__content {
  background: #081510;
  padding: 18px;
}
.page:has(#reading-calm:checked) {
  scroll-behavior: auto;
}
.page__body:has(#reading-calm:checked) *,
.page__body:has(#reading-calm:checked) *::before,
.page__body:has(#reading-calm:checked) *::after {
  animation: none !important;
  transition: none !important;
}
@media (min-width: 768px) {
  .interaction-surface {
    padding: 34px;
  }
  .interaction-title {
    font-size: 36px;
  }
  .lens-window {
    aspect-ratio: 16/9;
  }
  .room-reading {
    max-width: 680px;
  }
}
@media (min-width: 1200px) {
  .explore-route,
  .field-journal {
    padding: 64px 0;
  }
  .inside {
    grid-template-columns: minmax(0, 1fr) minmax(340px, 0.8fr);
    height: auto;
    gap: 6%;
  }
  .room-reading {
    margin-top: 70px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .lens-window__image {
    transition: none;
  }
}

.room-reading__continue {
  margin-top: 20px;
  font-size: 14px;
}