:root {
  --paper: #f2eadb;
  --paper-deep: #dfd0b7;
  --ink: #171411;
  --ink-soft: #625a4e;
  --line: rgba(23, 20, 17, 0.24);
  --red: #a63a25;
  --blue: #2e5264;
  --surface: rgba(255, 255, 255, 0.12);
  --surface-hover: rgba(255, 255, 255, 0.34);
  --serif: "Songti SC", STSong, SimSun, "Noto Serif CJK SC", serif;
  --sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  color-scheme: light;
}

:root[data-theme="night"] {
  --paper: #071015;
  --paper-deep: #10212a;
  --ink: #eaf2ed;
  --ink-soft: #98a9a5;
  --line: rgba(152, 169, 165, 0.28);
  --red: #56ddd3;
  --blue: #d29052;
  --surface: rgba(84, 231, 222, 0.035);
  --surface-hover: rgba(84, 231, 222, 0.08);
  color-scheme: dark;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; background: var(--paper); }

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 8%, color-mix(in srgb, var(--ink) 8%, transparent) 0 1px, transparent 1.6px) 0 0 / 13px 13px,
    linear-gradient(118deg, color-mix(in srgb, var(--ink) 4%, transparent), transparent 38%),
    var(--paper);
  font-family: var(--sans);
  transition: color 0.55s ease, background-color 0.55s ease;
}

body::before {
  position: fixed;
  z-index: 20;
  inset: 0;
  pointer-events: none;
  content: "";
  opacity: 0.22;
  background:
    repeating-linear-gradient(0deg, transparent 0 3px, color-mix(in srgb, var(--ink) 4%, transparent) 3px 4px),
    repeating-linear-gradient(90deg, transparent 0 5px, color-mix(in srgb, var(--ink) 3%, transparent) 5px 6px);
}

button, a { color: inherit; }
button { font: inherit; }

.page {
  position: relative;
  width: min(100%, 1600px);
  min-height: 100vh;
  margin: 0 auto;
  border-inline: 1px solid color-mix(in srgb, var(--ink) 10%, transparent);
}

.topbar {
  position: relative;
  z-index: 5;
  display: grid;
  grid-template-columns: 290px auto 1fr 154px;
  min-height: 86px;
  border-bottom: 1px solid var(--ink);
}

.brand {
  display: flex;
  align-items: center;
  padding: 0 42px;
  border-right: 1px solid var(--ink);
  font-family: var(--serif);
  font-size: 23px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-decoration: none;
}

.nav { display: flex; align-items: stretch; border-right: 1px solid var(--line); }
.nav a {
  display: grid;
  min-width: 76px;
  place-items: center;
  border-right: 1px solid var(--line);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-decoration: none;
  transition: color 0.2s ease, background 0.2s ease;
}
.nav a:last-child { border-right: 0; }
.nav a:hover, .nav a:focus-visible { background: var(--ink); color: var(--paper); outline: 0; }

.edition {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 30px;
  color: var(--ink-soft);
  font-size: 9px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.themeToggle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 0;
  background: var(--ink);
  color: var(--paper);
  font-size: 12px;
  letter-spacing: 0.16em;
  cursor: pointer;
  transition: color 0.3s ease, background 0.3s ease;
}
.themeToggle:hover, .themeToggle:focus-visible { background: var(--red); outline: 0; }
.toggleDot { width: 7px; height: 7px; border-radius: 50%; background: var(--paper); box-shadow: 0 0 0 4px color-mix(in srgb, var(--paper) 17%, transparent); }

.hero { display: grid; grid-template-columns: 290px minmax(0, 1fr); min-height: 660px; border-bottom: 1px solid var(--ink); }
.marginNote { position: relative; display: flex; flex-direction: column; justify-content: space-between; padding: 39px 42px; border-right: 1px solid var(--ink); }
.issue { color: var(--ink-soft); font-size: 11px; line-height: 1.8; letter-spacing: 0.19em; }
.seal { display: grid; width: 64px; height: 64px; place-items: center; border: 2px solid var(--red); box-shadow: inset 0 0 0 4px var(--paper), inset 0 0 0 5px var(--red); color: var(--red); font-family: var(--serif); font-size: 17px; line-height: 1.1; text-align: center; transform: rotate(-4deg); }
.verticalLine { align-self: flex-end; color: var(--ink-soft); font-family: var(--serif); font-size: 13px; letter-spacing: 0.34em; writing-mode: vertical-rl; }

.heroMain { position: relative; display: grid; grid-template-rows: auto 1fr auto; padding: 62px 72px 52px; overflow: hidden; }
.heroMain::after { position: absolute; width: 270px; height: 270px; right: -120px; bottom: -150px; border: 1px solid var(--red); border-radius: 50%; content: ""; opacity: 0.35; box-shadow: 0 0 0 44px color-mix(in srgb, var(--red) 5%, transparent), 0 0 0 86px color-mix(in srgb, var(--red) 3%, transparent); }
.kicker { display: flex; align-items: center; gap: 14px; margin-bottom: 34px; color: var(--red); font-size: 12px; letter-spacing: 0.26em; opacity: 0; animation: arrive 0.65s 0.08s ease-out forwards; }
.kicker::before { width: 45px; height: 2px; background: var(--red); content: ""; }
h1 { z-index: 1; align-self: center; max-width: 1080px; margin: 0; font-family: var(--serif); font-size: clamp(62px, 6vw, 104px); font-weight: 700; line-height: 1.02; letter-spacing: -0.055em; text-wrap: balance; opacity: 0; transform: translateY(18px); animation: arrive 0.82s 0.16s cubic-bezier(0.2, 0.75, 0.24, 1) forwards; }
.accent { position: relative; display: inline-block; color: var(--red); }
.accent::after { position: absolute; right: -5%; bottom: -0.08em; left: 3%; height: 0.08em; background: var(--red); content: ""; transform: rotate(-1deg) scaleX(0); transform-origin: left; animation: underline 0.7s 0.9s ease-out forwards; }
.heroIndex { position: absolute; top: 104px; right: 66px; color: transparent; font-family: Georgia, "Times New Roman", serif; font-size: 86px; line-height: 1; letter-spacing: -0.08em; opacity: 0.36; -webkit-text-stroke: 1px var(--ink); user-select: none; }
.heroBottom { z-index: 1; display: grid; grid-template-columns: minmax(360px, 700px) 1fr; align-items: end; gap: 70px; margin-top: 44px; }
.subcopy { margin: 0; color: var(--ink-soft); font-family: var(--serif); font-size: 18px; line-height: 1.9; letter-spacing: 0.035em; opacity: 0; animation: arrive 0.65s 0.38s ease-out forwards; }
.cta { display: flex; min-width: 188px; align-items: center; justify-content: space-between; justify-self: end; padding: 15px 0; border-bottom: 1px solid var(--ink); font-size: 14px; font-weight: 600; letter-spacing: 0.14em; text-decoration: none; transition: color 0.25s ease, border-color 0.25s ease; }
.cta span { color: var(--red); font-size: 21px; transition: transform 0.25s ease; }
.cta:hover, .cta:focus-visible { border-color: var(--red); color: var(--red); outline: 0; }
.cta:hover span, .cta:focus-visible span { transform: translate(5px, 4px); }

.projects { border-bottom: 1px solid var(--ink); }
.sectionHeader { display: grid; grid-template-columns: 1fr minmax(280px, 520px); align-items: end; gap: 40px; padding: 58px 42px 34px; border-bottom: 1px solid var(--ink); }
.eyebrow { display: block; margin-bottom: 14px; color: var(--red); font-family: Georgia, serif; font-size: 10px; letter-spacing: 0.18em; }
.sectionHeader h2, .about h2, .contact h2 { margin: 0; font-family: var(--serif); font-size: clamp(36px, 4.2vw, 68px); line-height: 1.1; letter-spacing: -0.045em; }
.sectionHeader > p { max-width: 440px; margin: 0 0 5px; color: var(--ink-soft); font-family: var(--serif); font-size: 15px; line-height: 1.8; }

.projectGrid { display: grid; grid-template-columns: 1fr 1fr; }
.projectCard { display: grid; grid-template-rows: 310px 1fr; min-height: 610px; border-right: 1px solid var(--ink); border-bottom: 1px solid var(--ink); transition: background 0.35s ease; }
.projectCard:nth-child(2n) { border-right: 0; }
.projectCard:last-child { border-bottom: 0; }
.projectCard:hover { background: var(--surface-hover); }
.projectCard.featured { grid-column: 1 / -1; grid-template-columns: 1.12fr 0.88fr; grid-template-rows: 520px; }
.projectVisual { position: relative; min-height: 0; overflow: hidden; border-bottom: 1px solid var(--ink); background: color-mix(in srgb, var(--paper-deep) 60%, transparent); }
.featured .projectVisual { border-right: 1px solid var(--ink); border-bottom: 0; }
.projectBody { display: flex; flex-direction: column; padding: 34px 38px 38px; }
.projectMeta { display: flex; justify-content: space-between; gap: 24px; color: var(--red); font-family: Georgia, serif; font-size: 10px; letter-spacing: 0.13em; }
.projectBody h3 { margin: auto 0 14px; font-family: var(--serif); font-size: clamp(29px, 3vw, 48px); line-height: 1.13; letter-spacing: -0.035em; }
.projectBody p { max-width: 590px; margin: 0; color: var(--ink-soft); font-family: var(--serif); font-size: 15px; line-height: 1.8; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 24px 0 0; padding: 0; list-style: none; }
.tags li { padding: 6px 10px; border: 1px solid var(--line); font-size: 10px; letter-spacing: 0.08em; }

.mapVisual { background: radial-gradient(circle at 55% 52%, color-mix(in srgb, var(--red) 10%, transparent), transparent 42%), color-mix(in srgb, var(--paper-deep) 68%, transparent); }
.mapVisual::before, .mapVisual::after { position: absolute; inset: 10% 8%; border: 1px solid var(--line); content: ""; transform: rotate(-2deg); }
.mapVisual::after { inset: 13% 6% 7% 11%; border-style: dashed; transform: rotate(1.5deg); }
.mapShape { position: absolute; top: 16%; right: 19%; bottom: 15%; left: 20%; border: 2px solid var(--ink); background: color-mix(in srgb, var(--paper) 74%, var(--red)); clip-path: polygon(8% 29%, 25% 17%, 37% 23%, 51% 8%, 67% 18%, 83% 12%, 94% 29%, 85% 47%, 92% 66%, 74% 74%, 67% 91%, 46% 80%, 29% 88%, 17% 72%, 4% 57%); box-shadow: 14px 18px 0 color-mix(in srgb, var(--ink) 12%, transparent); }
.mapShape::before { position: absolute; width: 170%; height: 1px; top: 48%; left: -30%; background: var(--blue); content: ""; transform: rotate(-13deg); box-shadow: 0 8px 0 color-mix(in srgb, var(--blue) 50%, transparent); }
.mapPin { position: absolute; z-index: 2; padding: 5px 8px; border: 1px solid var(--ink); background: var(--paper); font-family: var(--serif); font-size: 10px; letter-spacing: 0.08em; }
.pinOne { top: 25%; left: 28%; transform: rotate(-2deg); }
.pinTwo { top: 48%; right: 22%; transform: rotate(1deg); }
.pinThree { bottom: 24%; left: 36%; transform: rotate(-1deg); }
.compass { position: absolute; right: 10%; bottom: 10%; display: grid; width: 54px; height: 54px; place-items: center; border: 1px solid var(--ink); border-radius: 50%; color: var(--red); font-family: var(--serif); font-size: 12px; }
.compass::after { position: absolute; top: -14px; content: "↑"; font-size: 18px; }

.editorialVisual { padding: 42px; background: linear-gradient(105deg, transparent 0 66%, color-mix(in srgb, var(--red) 12%, transparent) 66%), var(--paper-deep); }
.miniMasthead { display: block; padding-bottom: 12px; border-bottom: 1px solid var(--ink); font-family: var(--serif); font-size: 16px; font-weight: 700; letter-spacing: 0.14em; }
.miniHeadline { position: absolute; top: 34%; left: 10%; font-family: var(--serif); font-size: clamp(24px, 3vw, 44px); font-weight: 700; line-height: 1.12; }
.miniRule { position: absolute; right: 10%; bottom: 21%; left: 10%; height: 1px; background: var(--ink); }
.miniColumns { position: absolute; right: 10%; bottom: 10%; left: 10%; height: 7%; background: repeating-linear-gradient(90deg, var(--ink-soft) 0 23%, transparent 23% 26%); opacity: 0.35; }

.labVisual { background: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px), color-mix(in srgb, var(--paper-deep) 65%, transparent); background-size: 34px 34px; }
.labOrb { position: absolute; border: 1px solid var(--ink); border-radius: 50%; }
.orbOne { width: 190px; height: 190px; top: 50%; left: 50%; transform: translate(-58%, -50%); box-shadow: inset 0 0 0 28px color-mix(in srgb, var(--red) 8%, transparent); }
.orbTwo { width: 126px; height: 126px; top: 50%; left: 50%; border-color: var(--red); transform: translate(-8%, -50%); }
.labCenter { position: absolute; z-index: 2; top: 50%; left: 50%; padding: 9px 12px; border: 1px solid var(--ink); background: var(--paper); font-family: Georgia, serif; font-size: 12px; letter-spacing: 0.08em; transform: translate(-50%, -50%); }
.labLine { position: absolute; width: 32%; height: 1px; background: var(--red); transform-origin: left; }
.lineOne { top: 31%; left: 13%; transform: rotate(17deg); }
.lineTwo { right: 13%; bottom: 27%; transform: rotate(-22deg); }

.atlasShowcase { padding: 74px 42px 72px; border-top: 1px solid var(--ink); }
.atlasHeader { display: grid; grid-template-columns: 1fr minmax(300px, 540px); align-items: end; gap: 42px; margin-bottom: 34px; }
.atlasHeader h2 { margin: 0; font-family: var(--serif); font-size: clamp(38px, 4.5vw, 70px); line-height: 1; letter-spacing: -0.05em; }
.atlasHeader p { margin: 0; color: var(--ink-soft); font-family: var(--serif); font-size: 15px; line-height: 1.85; }
.atlasFilters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 26px; }
.filterButton { padding: 9px 14px; border: 1px solid var(--line); background: transparent; color: var(--ink-soft); font-size: 10px; letter-spacing: 0.1em; cursor: pointer; transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease; }
.filterButton:hover, .filterButton:focus-visible, .filterButton.active { border-color: var(--ink); background: var(--ink); color: var(--paper); outline: 0; }
.mapGallery { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; border: 1px solid var(--ink); background: var(--ink); }
.mapCard { min-width: 0; padding: 0; overflow: hidden; border: 0; background: var(--paper); color: var(--ink); text-align: left; cursor: zoom-in; }
.mapCard[hidden] { display: none; }
.mapFrame { display: block; aspect-ratio: 2 / 3; overflow: hidden; background: var(--paper-deep); }
.mapFrame img { display: block; width: 100%; height: 100%; object-fit: cover; filter: saturate(0.9) contrast(0.98); transition: transform 0.45s cubic-bezier(0.2, 0.75, 0.24, 1), filter 0.3s ease; }
.mapCard:hover .mapFrame img, .mapCard:focus-visible .mapFrame img { transform: scale(1.025); filter: saturate(1.06) contrast(1.01); }
.mapCard:focus-visible { outline: 3px solid var(--red); outline-offset: -3px; }
.mapCaption { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; min-height: 66px; padding: 18px 16px; border-top: 1px solid var(--ink); }
.mapCaption strong { font-family: var(--serif); font-size: 16px; letter-spacing: 0.03em; }
.mapCaption em { flex: 0 0 auto; color: var(--red); font-family: Georgia, serif; font-size: 9px; font-style: normal; letter-spacing: 0.08em; }
.mapDialog { width: min(94vw, 980px); max-width: none; max-height: 94vh; padding: 0; overflow: visible; border: 1px solid var(--ink); background: var(--paper); color: var(--ink); box-shadow: 0 24px 90px rgba(0, 0, 0, 0.48); }
.mapDialog::backdrop { background: rgba(8, 7, 5, 0.82); backdrop-filter: blur(7px); }
.dialogInner { display: grid; grid-template-columns: minmax(0, 700px) 1fr; max-height: 92vh; }
.dialogImage { display: block; width: 100%; height: 92vh; object-fit: contain; background: #d8c7a9; }
.dialogCaption { display: flex; flex-direction: column; justify-content: flex-end; gap: 12px; padding: 34px 28px; border-left: 1px solid var(--ink); }
.dialogCaption span { color: var(--red); font-family: Georgia, serif; font-size: 9px; letter-spacing: 0.14em; }
.dialogCaption strong { font-family: var(--serif); font-size: 25px; }
.dialogClose { position: absolute; z-index: 2; top: 12px; right: 12px; padding: 8px 10px; border: 1px solid var(--ink); background: var(--paper); color: var(--ink); font-size: 10px; letter-spacing: 0.08em; cursor: pointer; }
.dialogClose:hover, .dialogClose:focus-visible { background: var(--red); color: var(--paper); outline: 0; }

.about { display: grid; grid-template-columns: 1fr 1.05fr; border-bottom: 1px solid var(--ink); }
.aboutIntro { padding: 72px 64px 72px 42px; border-right: 1px solid var(--ink); }
.aboutIntro > p { max-width: 640px; margin: 32px 0 0; color: var(--ink-soft); font-family: var(--serif); font-size: 18px; line-height: 1.95; }
.aboutIntro .asideCopy { padding-top: 24px; border-top: 1px solid var(--line); font-size: 13px; }
.methodList { padding: 28px 42px; }
.method { display: grid; grid-template-columns: 54px 1fr; gap: 18px; padding: 30px 0; border-bottom: 1px solid var(--line); }
.method:last-child { border-bottom: 0; }
.method > span { padding-top: 3px; color: var(--red); font-family: Georgia, serif; font-size: 11px; }
.method h3 { margin: 0 0 9px; font-family: var(--serif); font-size: 22px; }
.method p { max-width: 540px; margin: 0; color: var(--ink-soft); font-family: var(--serif); font-size: 14px; line-height: 1.75; }

.contact { position: relative; min-height: 430px; padding: 76px 42px; overflow: hidden; }
.contact::after { position: absolute; width: 360px; height: 360px; right: -45px; bottom: -160px; border: 1px solid var(--red); border-radius: 50%; content: ""; box-shadow: 0 0 0 48px color-mix(in srgb, var(--red) 4%, transparent), 0 0 0 92px color-mix(in srgb, var(--red) 3%, transparent); }
.contact h2 { max-width: 900px; }
.contact > p { max-width: 700px; margin: 28px 0 34px; color: var(--ink-soft); font-family: var(--serif); font-size: 17px; line-height: 1.9; }
.contactLink { position: relative; z-index: 2; display: inline-flex; min-width: 230px; justify-content: space-between; padding: 15px 0; border-bottom: 1px solid var(--ink); font-weight: 600; letter-spacing: 0.13em; text-decoration: none; }
.contactLink span { color: var(--red); font-size: 20px; }
.contactActions { display: flex; flex-wrap: wrap; gap: 34px; }
.contactNote { display: block; margin-top: 24px; color: var(--ink-soft); font-family: var(--serif); font-size: 11px; letter-spacing: 0.1em; }

footer { display: flex; justify-content: space-between; padding: 22px 42px; border-top: 1px solid var(--ink); color: var(--ink-soft); font-family: var(--serif); font-size: 11px; letter-spacing: 0.09em; }

@keyframes arrive { to { opacity: 1; transform: translateY(0); } }
@keyframes underline { to { transform: rotate(-1deg) scaleX(1); } }

@media (max-width: 1050px) {
  .topbar { grid-template-columns: 245px 1fr 120px; }
  .edition { display: none; }
  .brand { padding-inline: 28px; }
  .hero { grid-template-columns: 245px minmax(0, 1fr); }
  .heroMain { padding-inline: 48px; }
  .projectCard.featured { grid-template-rows: 460px; }
  .mapGallery { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 760px) {
  .topbar { grid-template-columns: 1fr 104px; min-height: 70px; }
  .brand { padding: 0 20px; border-right: 0; }
  .nav { grid-column: 1 / -1; grid-row: 2; height: 48px; border-top: 1px solid var(--ink); border-right: 0; }
  .nav a { flex: 1; }
  .themeToggle { grid-column: 2; grid-row: 1; }
  .hero { grid-template-columns: 1fr; }
  .marginNote { display: none; }
  .heroMain { min-height: 660px; padding: 54px 24px 44px; }
  .heroIndex { top: 100px; right: 24px; font-size: 58px; opacity: 0.2; }
  h1 { font-size: clamp(48px, 14vw, 76px); }
  .heroBottom { grid-template-columns: 1fr; gap: 28px; }
  .cta { justify-self: start; }
  .sectionHeader { grid-template-columns: 1fr; padding: 44px 24px 28px; }
  .projectGrid { grid-template-columns: 1fr; }
  .projectCard, .projectCard.featured { grid-column: auto; grid-template-columns: 1fr; grid-template-rows: 300px 1fr; min-height: 570px; border-right: 0; }
  .featured .projectVisual, .projectVisual { border-right: 0; border-bottom: 1px solid var(--ink); }
  .projectCard:last-child { border-bottom: 0; }
  .projectBody { padding: 28px 24px 32px; }
  .atlasShowcase { padding: 54px 24px; }
  .atlasHeader { grid-template-columns: 1fr; }
  .mapGallery { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .dialogInner { grid-template-columns: 1fr; }
  .dialogImage { height: calc(92vh - 82px); }
  .dialogCaption { min-height: 82px; padding: 18px 20px; border-top: 1px solid var(--ink); border-left: 0; }
  .dialogCaption strong { font-size: 20px; }
  .about { grid-template-columns: 1fr; }
  .aboutIntro { padding: 54px 24px; border-right: 0; border-bottom: 1px solid var(--ink); }
  .methodList { padding: 15px 24px; }
  .contact { min-height: 470px; padding: 58px 24px; }
  .contact::after { right: -160px; }
  footer { padding: 20px 24px; }
}

@media (max-width: 520px) {
  .heroMain { min-height: 700px; }
  .kicker { font-size: 10px; }
  .subcopy { font-size: 16px; }
  .projectVisual { min-height: 260px; }
  .projectCard, .projectCard.featured { grid-template-rows: 260px 1fr; }
  .mapShape { inset: 18% 14% 16%; }
  .projectMeta { flex-direction: column; gap: 6px; }
  .atlasFilters { gap: 6px; }
  .filterButton { padding: 8px 10px; }
  .mapCaption { display: block; min-height: 62px; padding: 14px 12px; }
  .mapCaption strong, .mapCaption em { display: block; }
  .mapCaption strong { font-size: 14px; }
  .mapCaption em { margin-top: 5px; }
  footer span:last-child { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: 0.01ms !important; animation-delay: 0ms !important; transition-duration: 0.01ms !important; }
}