@charset "UTF-8";

:root {
  --paper: #f4f0e8;
  --paper-deep: #e9e1d5;
  --paper-light: #f8f5ef;
  --ink: #242321;
  --muted: #716d66;
  --wine: #783446;
  --copper: #9a7157;
  --line: #d2c7b8;
  --serif: "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body {
  min-width: 280px;
  margin: 0;
  overflow-x: clip;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
}

.shell {
  width: min(calc(100% - 64px), 1160px);
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  z-index: 30;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  color: #fff;
  background: var(--wine);
  transform: translateY(-160%);
}

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

.site-header {
  position: sticky;
  z-index: 10;
  top: 0;
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}

.header-inner {
  min-height: 88px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.wordmark {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: baseline;
  gap: 12px;
  text-decoration: none;
}

.wordmark-cn {
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 600;
  letter-spacing: 0.12em;
}

.wordmark-en,
.signature-kicker,
.signature-place,
.section-index,
.item-index,
.footer-en {
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.18em;
}

.site-nav ul {
  display: flex;
  gap: clamp(18px, 2.8vw, 38px);
  align-items: center;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav a {
  display: inline-block;
  padding-block: 10px;
  color: #4e4b46;
  font-size: 13px;
  letter-spacing: 0.06em;
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--wine);
}

.hero {
  min-height: calc(100svh - 89px);
  display: grid;
  align-items: center;
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(250px, 0.55fr);
  gap: clamp(48px, 9vw, 128px);
  align-items: center;
  padding-block: clamp(84px, 11vw, 150px);
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0 0 28px;
  color: var(--wine);
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.18em;
}

.eyebrow span {
  width: 36px;
  height: 1px;
  background: var(--wine);
}

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

h1 {
  max-width: 9em;
  margin-bottom: 28px;
  font-family: var(--serif);
  font-size: clamp(48px, 6.7vw, 84px);
  font-weight: 500;
  line-height: 1.13;
  letter-spacing: 0.035em;
  text-wrap: balance;
}

.hero-lead {
  margin-bottom: 12px;
  color: #4b4945;
  font-family: var(--serif);
  font-size: clamp(20px, 2.2vw, 28px);
  letter-spacing: 0.09em;
}

.hero-note {
  max-width: 34em;
  margin-bottom: 48px;
  color: var(--muted);
  font-size: 14px;
  letter-spacing: 0.04em;
}

.text-link {
  display: inline-flex;
  gap: 18px;
  align-items: center;
  padding-block: 9px;
  border-bottom: 1px solid var(--wine);
  color: var(--wine);
  font-size: 14px;
  letter-spacing: 0.08em;
  text-decoration: none;
}

a:focus-visible {
  outline: 2px solid var(--wine);
  outline-offset: 5px;
}

.hero-signature {
  min-height: 390px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-left: clamp(28px, 4vw, 54px);
  border-left: 1px solid var(--copper);
}

.hero-signature strong {
  margin-block: 30px 34px;
  color: var(--wine);
  font-family: var(--serif);
  font-size: clamp(64px, 8vw, 104px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0.08em;
  writing-mode: vertical-rl;
}

.about,
.business,
.company {
  scroll-margin-top: 88px;
}

.about {
  padding-block: clamp(84px, 12vw, 152px);
  background: var(--paper-deep);
}

.about-grid,
.company-grid {
  display: grid;
  grid-template-columns: minmax(180px, 0.55fr) minmax(0, 1.45fr);
  gap: clamp(48px, 10vw, 144px);
  align-items: start;
}

.section-index {
  margin-bottom: 18px;
  color: var(--wine);
}

h2 {
  margin-bottom: 0;
  font-family: var(--serif);
  font-size: clamp(32px, 4vw, 50px);
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: 0.08em;
}

.about-copy {
  margin-bottom: 0;
  color: #3e3c38;
  font-family: var(--serif);
  font-size: clamp(19px, 2vw, 24px);
  line-height: 2;
  text-align: justify;
}

.business {
  padding-block: clamp(88px, 12vw, 156px);
  background: var(--paper-light);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(180px, 0.55fr) minmax(0, 1.45fr);
  gap: clamp(48px, 10vw, 144px);
  align-items: end;
  margin-bottom: clamp(56px, 8vw, 96px);
}

.section-heading > p {
  max-width: 31em;
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.9;
}

.business-list {
  border-bottom: 1px solid var(--line);
}

.business-item {
  display: grid;
  grid-template-columns: 72px minmax(180px, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(24px, 5vw, 72px);
  align-items: start;
  padding-block: clamp(34px, 5vw, 52px);
  border-top: 1px solid var(--line);
}

.item-index {
  padding-top: 5px;
  color: var(--copper);
}

.business-item h3 {
  margin-bottom: 0;
  font-family: var(--serif);
  font-size: clamp(22px, 2.5vw, 30px);
  font-weight: 500;
  line-height: 1.45;
  letter-spacing: 0.06em;
}

.business-item p {
  margin-bottom: 0;
  color: #56524c;
  font-size: 15px;
  line-height: 1.9;
}

.company {
  padding-block: clamp(88px, 12vw, 156px);
  background: var(--paper);
}

.company-details {
  margin: 0;
  border-top: 1px solid var(--copper);
}

.company-details > div {
  display: grid;
  grid-template-columns: minmax(110px, 0.38fr) minmax(0, 1fr);
  gap: 28px;
  padding-block: 24px;
  border-bottom: 1px solid var(--line);
}

.company-details dt {
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.06em;
}

.company-details dd {
  margin: 0;
  font-family: var(--serif);
  font-size: 17px;
  letter-spacing: 0.025em;
}

.company-details a,
.footer-legal a {
  text-decoration-color: var(--copper);
  text-underline-offset: 4px;
}

.site-footer {
  padding-block: 44px;
  color: #d8d0c5;
  background: #292725;
}

.footer-inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 48px;
}

.footer-brand {
  display: block;
  margin-bottom: 5px;
  color: #f4efe7;
  font-family: var(--serif);
  font-size: 20px;
  letter-spacing: 0.12em;
}

.footer-en {
  color: #aaa198;
}

.footer-legal {
  display: flex;
  gap: 24px;
  align-items: center;
  color: #bdb5aa;
  font-size: 12px;
}

.error-main {
  min-height: calc(100svh - 89px);
  display: grid;
  align-items: center;
  padding-block: 72px;
}

.error-code {
  margin-bottom: 18px;
  color: var(--wine);
  font-size: 12px;
  letter-spacing: 0.22em;
}

.error-main h1 {
  margin-bottom: 24px;
  font-size: clamp(48px, 7vw, 82px);
}

.error-main .hero-note {
  margin-bottom: 38px;
}

@media (max-width: 780px) {
  html {
    scroll-padding-top: 122px;
  }

  .shell {
    width: min(calc(100% - 40px), 1160px);
  }

  .header-inner {
    min-height: 112px;
    flex-wrap: wrap;
    gap: 4px 20px;
    padding-block: 14px 12px;
  }

  .wordmark-en {
    display: none;
  }

  .site-nav {
    flex: 1 0 100%;
  }

  .site-nav ul {
    width: 100%;
    justify-content: space-between;
    gap: 10px;
  }

  .site-nav a {
    font-size: 12px;
    padding-block: 12px;
  }

  .hero {
    min-height: auto;
  }

  .hero-grid,
  .about-grid,
  .section-heading,
  .company-grid {
    grid-template-columns: 1fr;
  }

  .hero-grid {
    gap: 72px;
    padding-block: 82px 76px;
  }

  h1 {
    max-width: 8em;
    font-size: clamp(42px, 12.2vw, 62px);
  }

  .hero-lead {
    max-width: 13em;
    line-height: 1.65;
  }

  .hero-note {
    max-width: 22em;
    line-height: 1.9;
  }

  .hero-signature {
    min-height: auto;
    padding: 34px 0 0;
    border-top: 1px solid var(--copper);
    border-left: 0;
  }

  .hero-signature strong {
    margin-block: 22px;
    font-size: 58px;
    writing-mode: horizontal-tb;
  }

  .about,
  .business,
  .company {
    scroll-margin-top: 118px;
  }

  .about-grid,
  .section-heading,
  .company-grid {
    gap: 42px;
  }

  .about-copy {
    font-size: 19px;
    text-align: left;
  }

  .section-heading {
    margin-bottom: 52px;
  }

  .business-item {
    grid-template-columns: 44px minmax(0, 1fr);
    gap: 16px;
  }

  .business-item p {
    grid-column: 2;
  }

  .company-details > div {
    grid-template-columns: 88px minmax(0, 1fr);
    gap: 18px;
  }

  .footer-inner,
  .footer-legal {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-inner {
    gap: 34px;
  }

  .footer-legal {
    gap: 9px;
  }

  .error-main {
    min-height: calc(100svh - 112px);
  }
}

@media (max-width: 360px) {
  .shell {
    width: min(calc(100% - 32px), 1160px);
  }

  .site-nav a {
    font-size: 12px;
    letter-spacing: 0;
  }

  .company-details > div {
    grid-template-columns: 1fr;
    gap: 5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}