:root {
  color-scheme: light;
  --ink: #1e1925;
  --muted: #6c6374;
  --paper: #f3efe9;
  --paper-deep: #e9e2d9;
  --plum: #2b1e3b;
  --plum-soft: #4a315e;
  --coral: #df705f;
  --lime: #c9df7c;
  --line: rgba(30, 25, 37, .18);
  --white: #fffdf9;
  --serif: "Songti SC", "STSong", "SimSun", serif;
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 118px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  line-height: 1.75;
  overflow-wrap: anywhere;
}

img {
  display: block;
  width: 100%;
  height: auto;
  background: #d9d2cb;
}

figure, p, h1, h2, h3, dl { margin-top: 0; }

.shell {
  width: min(1480px, calc(100% - 72px));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 1000;
  padding: 10px 14px;
  color: var(--white);
  background: var(--plum);
  transform: translateY(-160%);
}

.skip-link:focus { transform: translateY(0); }

.eyebrow {
  margin-bottom: 18px;
  color: var(--coral);
  font-size: .76rem;
  font-weight: 800;
  letter-spacing: .22em;
  text-transform: uppercase;
}

.site-header {
  position: relative;
  z-index: 20;
  background: var(--paper);
}

.masthead {
  min-height: 126px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 18px;
}

.brand-logo {
  width: 72px;
  height: 72px;
  flex: 0 0 auto;
  object-fit: contain;
  background: transparent;
}

.brand-name {
  margin-bottom: 0;
  font-family: var(--serif);
  font-size: 1.72rem;
  font-weight: 700;
  line-height: 1.2;
}

.brand-en, .site-mark {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .2em;
}

.site-mark { margin: 0; }

.primary-nav {
  position: sticky;
  top: 0;
  z-index: 30;
  border-block: 1px solid var(--line);
  background: rgba(243, 239, 233, .95);
  backdrop-filter: blur(18px);
}

.nav-track {
  min-height: 64px;
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
}

.nav-track a {
  display: grid;
  place-items: center;
  min-width: 0;
  padding: 13px 16px;
  color: var(--ink);
  border-left: 1px solid var(--line);
  font-size: .9rem;
  font-weight: 650;
  text-align: center;
  text-decoration: none;
  transition: background .2s ease, color .2s ease;
}

.nav-track a:last-child { border-right: 1px solid var(--line); }
.nav-track a:hover { color: var(--white); background: var(--plum); }
.nav-track a:focus-visible { outline: 3px solid var(--coral); outline-offset: -3px; }

.hero { padding-block: 90px 0; }

.hero-copy {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(280px, .65fr);
  column-gap: 8vw;
  align-items: end;
  padding: 0 2vw 70px;
}

.hero-copy .eyebrow { grid-column: 1 / -1; }

h1 {
  margin-bottom: 0;
  font-family: var(--serif);
  font-size: clamp(3.5rem, 7.6vw, 8.8rem);
  font-weight: 600;
  letter-spacing: -.055em;
  line-height: .9;
}

h1 span {
  display: block;
  margin-top: 28px;
  color: var(--plum-soft);
  font-family: var(--sans);
  font-size: clamp(1.35rem, 2vw, 2.15rem);
  font-weight: 650;
  letter-spacing: .02em;
  line-height: 1.25;
}

.tagline {
  margin-bottom: 18px;
  color: var(--coral);
  font-family: var(--serif);
  font-size: clamp(1.25rem, 2vw, 1.8rem);
  font-weight: 700;
}

.hero-intro { margin-bottom: 0; color: var(--muted); }

.hero-visual {
  position: relative;
  margin: 0;
  background: var(--plum);
}

.hero-visual img {
  width: 100%;
  aspect-ratio: 16 / 8.4;
  object-fit: cover;
  filter: contrast(1.05);
}

.section-pad { padding-block: 130px; }

.section-heading h2,
.ledger-head h2,
.atlas-intro h2,
.newsroom-title h2,
.app-title h2 {
  margin-bottom: 30px;
  font-family: var(--serif);
  font-size: clamp(2.5rem, 4.7vw, 5.7rem);
  font-weight: 600;
  letter-spacing: -.04em;
  line-height: 1.05;
}

.brand-dossier { background: var(--white); }

.dossier-grid {
  display: grid;
  grid-template-columns: .7fr 1fr 1.15fr;
  gap: 5vw;
  align-items: start;
}

.dossier-copy .lead {
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(1.3rem, 1.85vw, 1.8rem);
  line-height: 1.6;
}

.dossier-copy > p:not(.lead) { color: var(--muted); }

.facts {
  margin: 46px 0 0;
  border-top: 1px solid var(--line);
}

.facts div {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 20px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
}

.facts dt { color: var(--muted); font-size: .78rem; }
.facts dd { margin: 0; font-weight: 650; }

.dossier-image { margin: 0; }
.dossier-image img { aspect-ratio: 3 / 2; object-fit: cover; }
.dossier-image figcaption { padding-top: 13px; color: var(--muted); font-size: .82rem; }

.content-ledger { color: var(--white); background: var(--plum); }
.ledger-head { max-width: 900px; margin-bottom: 76px; }
.ledger-head h2 { color: var(--white); }
.ledger-head > p:last-child { color: #c9bfce; }

.ledger-list { border-top: 1px solid rgba(255,255,255,.2); }

.ledger-entry {
  display: grid;
  grid-template-columns: minmax(320px, 1.05fr) 90px minmax(320px, .95fr);
  align-items: stretch;
  border-bottom: 1px solid rgba(255,255,255,.2);
}

.ledger-entry figure { margin: 0; overflow: hidden; }
.ledger-entry figure img { height: 100%; min-height: 370px; object-fit: cover; }

.entry-index {
  display: grid;
  place-items: center;
  color: var(--lime);
  border-inline: 1px solid rgba(255,255,255,.2);
  font-family: var(--serif);
  font-size: 2rem;
}

.entry-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(36px, 5vw, 82px);
}

.entry-type { color: var(--coral); font-size: .75rem; font-weight: 800; letter-spacing: .17em; }
.entry-copy h3 { margin: 0 0 20px; font-family: var(--serif); font-size: clamp(2rem, 3.2vw, 3.5rem); }
.entry-copy p:last-child { margin-bottom: 0; color: #cabfd0; }
.entry-copy strong { color: var(--white); }

.ledger-entry.reverse figure { grid-column: 3; grid-row: 1; }
.ledger-entry.reverse .entry-index { grid-column: 2; grid-row: 1; }
.ledger-entry.reverse .entry-copy { grid-column: 1; grid-row: 1; }

.topic-atlas { background: var(--paper-deep); }

.atlas-grid {
  display: grid;
  grid-template-columns: .78fr 1.25fr .75fr;
  grid-template-rows: auto 1fr;
  gap: 26px;
}

.atlas-intro { grid-row: 1 / 3; padding: 20px 3vw 20px 0; }
.atlas-intro p:last-child { color: var(--muted); }

.atlas-wide, .atlas-tall { margin: 0; background: var(--white); }
.atlas-wide { grid-column: 2 / 4; }
.atlas-tall { grid-column: 2; }
.atlas-wide img { aspect-ratio: 16 / 8; object-fit: cover; }
.atlas-tall img { aspect-ratio: 4 / 3; height: 100%; object-fit: cover; }

.atlas-wide figcaption,
.atlas-tall figcaption {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 20px 22px;
}

.atlas-wide figcaption span,
.atlas-tall figcaption span { color: var(--muted); font-size: .84rem; }

.atlas-note {
  display: flex;
  align-items: end;
  padding: 36px;
  color: var(--white);
  background: var(--coral);
}

.atlas-note p { margin: 0; }

.newsroom { background: var(--white); }

.newsroom-grid {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: 8vw;
}

.newsroom-title p:last-child { color: var(--muted); }
.status-list { border-top: 1px solid var(--line); }

.status-list article {
  display: grid;
  grid-template-columns: 110px 1fr 1.2fr;
  gap: 28px;
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
}

.status-list span { color: var(--coral); font-size: .75rem; font-weight: 800; letter-spacing: .12em; }
.status-list h3 { margin: 0; font-family: var(--serif); font-size: 1.45rem; }
.status-list p { margin: 0; color: var(--muted); }

.app-guide { color: var(--white); background: #18151d; }

.app-grid {
  display: grid;
  grid-template-columns: .72fr 1.28fr;
  gap: 8vw;
}

.app-title h2 { color: var(--white); }
.app-title p:last-child { color: #aaa1af; }

.faq-list { border-top: 1px solid rgba(255,255,255,.22); }

.faq-list details { border-bottom: 1px solid rgba(255,255,255,.22); }
.faq-list summary {
  position: relative;
  padding: 27px 50px 27px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--serif);
  font-size: clamp(1.15rem, 1.7vw, 1.55rem);
  font-weight: 700;
}

.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; right: 0; color: var(--lime); font-family: var(--sans); font-size: 1.8rem; font-weight: 300; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { max-width: 830px; margin: -6px 0 28px; color: #aaa1af; }

.site-footer { padding-block: 70px; color: #d4ccd8; background: var(--plum); }

.footer-grid {
  display: grid;
  grid-template-columns: .75fr 1fr;
  gap: 42px 8vw;
}

.footer-brand { margin-bottom: 4px; color: var(--white); font-family: var(--serif); font-size: 2.2rem; font-weight: 700; }
.footer-grid > div > p:last-child { margin-bottom: 0; color: #a99daf; }
.footer-grid dl { margin: 0; }
.footer-grid dl div { display: grid; grid-template-columns: 110px 1fr; gap: 18px; padding: 8px 0; border-bottom: 1px solid rgba(255,255,255,.14); }
.footer-grid dt { color: #a99daf; }
.footer-grid dd { margin: 0; color: var(--white); }
.copyright { grid-column: 1 / -1; margin: 0; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.14); color: #a99daf; font-size: .82rem; }

@media (max-width: 1080px) {
  .shell { width: min(100% - 40px, 980px); }
  .hero-copy { grid-template-columns: 1fr; row-gap: 34px; }
  .dossier-grid { grid-template-columns: 1fr 1.2fr; }
  .dossier-image { grid-column: 1 / -1; }
  .ledger-entry { grid-template-columns: 1fr 72px 1fr; }
  .entry-copy { padding: 38px; }
  .atlas-grid { grid-template-columns: .75fr 1fr; }
  .atlas-intro { grid-row: 1; grid-column: 1 / -1; }
  .atlas-wide { grid-column: 1 / -1; }
  .atlas-tall { grid-column: 1; }
}

@media (max-width: 760px) {
  html { scroll-padding-top: 94px; }
  .shell { width: min(100% - 28px, 680px); }
  .masthead { min-height: 98px; }
  .brand-logo { width: 58px; height: 58px; }
  .brand-name { font-size: 1.4rem; }
  .brand-en { font-size: .58rem; letter-spacing: .13em; }
  .site-mark { display: none; }
  .nav-track {
    display: flex;
    overflow-x: auto;
    scrollbar-width: none;
  }
  .nav-track::-webkit-scrollbar { display: none; }
  .nav-track a {
    min-width: max-content;
    min-height: 54px;
    padding-inline: 18px;
    border-left: 0;
    border-right: 1px solid var(--line);
  }
  .hero { padding-top: 58px; }
  .hero-copy { padding-inline: 0; padding-bottom: 42px; }
  h1 { font-size: clamp(3.1rem, 15vw, 5.6rem); }
  .hero-visual img { aspect-ratio: 4 / 3; }
  .section-pad { padding-block: 80px; }
  .dossier-grid,
  .newsroom-grid,
  .app-grid { grid-template-columns: 1fr; gap: 46px; }
  .ledger-head { margin-bottom: 46px; }
  .ledger-entry,
  .ledger-entry.reverse {
    grid-template-columns: 48px 1fr;
  }
  .ledger-entry figure,
  .ledger-entry.reverse figure {
    grid-column: 1 / -1;
    grid-row: 1;
  }
  .ledger-entry figure img { min-height: 0; aspect-ratio: 3 / 2; }
  .ledger-entry .entry-index,
  .ledger-entry.reverse .entry-index {
    grid-column: 1;
    grid-row: 2;
    border-left: 0;
    border-right: 1px solid rgba(255,255,255,.2);
    border-block: 0;
  }
  .ledger-entry .entry-copy,
  .ledger-entry.reverse .entry-copy {
    grid-column: 2;
    grid-row: 2;
    padding: 34px 24px;
  }
  .atlas-grid { grid-template-columns: 1fr; }
  .atlas-intro,
  .atlas-wide,
  .atlas-tall,
  .atlas-note { grid-column: 1; }
  .atlas-tall img { aspect-ratio: 16 / 10; }
  .status-list article { grid-template-columns: 1fr; gap: 10px; }
  .footer-grid { grid-template-columns: 1fr; }
  .copyright { grid-column: 1; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition-duration: .01ms !important; }
}