.brand-hero {
  position: relative;
  isolation: isolate;
  background: #191e27;
  color: #fff;
  overflow: hidden;
}
.hero-art {
  position: absolute;
  inset: 0 0 0 44%;
  z-index: -1;
  background: #e3e6e8;
  clip-path: polygon(9% 0,100% 0,100% 100%,0 100%);
}
.hero-art img { width: 100%; height: 100%; object-fit: cover; object-position: 65% 50%; }
.hero-inner { display: flex; align-items: center; min-height: clamp(385px,33vw,545px); }
.hero-copy { padding: 45px 0; }
.hero-copy h1 {
  font: 550 clamp(58px,5.1vw,86px)/1.17 "Songti SC","STSong","SimSun",serif;
  letter-spacing: .015em;
}
.hero-link {
  display: inline-flex;
  align-items: center;
  gap: 28px;
  margin-top: 28px;
  padding: 8px 0;
  border-bottom: 1px solid #9fabb8;
  font-size: 15px;
  font-weight: 520;
}
.hero-link .icon { width: 15px; height: 15px; }
.hero-link:hover { color: #fff; border-color: #fff; }
.business-section, .systems-section, .cases-section { padding-block: clamp(48px,5.4vw,86px); }
.business-section { padding-top: clamp(32px,3.8vw,60px); }
.section-label {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: clamp(22px,2vw,32px);
  font-size: 19px;
  line-height: 1.4;
  font-weight: 650;
}
.section-label::before { content: ""; width: 24px; height: 3px; background: var(--red); }
.business-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: clamp(18px,2.4vw,38px); }
.business-card { display: flex; flex-direction: column; border-top: 1px solid #b9bdc0; padding-top: 18px; }
.business-title, .system-caption, .case-name {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.business-title h3 { font-size: clamp(24px,2.15vw,37px); line-height: 1.35; font-weight: 650; letter-spacing: -.045em; }
.business-title .icon { color: var(--red); width: 19px; height: 19px; }
.business-card p { color: var(--sub); font-size: clamp(14px,1.06vw,16px); line-height: 1.65; margin: 6px 0 18px; }
.business-image { overflow: hidden; aspect-ratio: 1.95; margin-top: auto; }
.business-image img, .system-art img, .case-cover img { width: 100%; height: 100%; object-fit: cover; }
.business-card:hover { border-color: var(--red); }
.business-card:hover h3, .system-card:hover h3, .case-covers a:hover h3 { color: var(--red); }
.section-heading { font-size: clamp(32px,3vw,48px); line-height: 1.2; letter-spacing: -.045em; font-weight: 650; margin-bottom: clamp(22px,2.5vw,38px); }
.systems-section { background: #eeefed; }
.system-shelf { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: clamp(18px,2.4vw,38px); }
.system-card { display: flex; flex-direction: column; background: #fff; min-width: 0; }
.system-art { aspect-ratio: 2.35; overflow: hidden; background: #e5e4df; }
.system-art img { object-position: 50% 45%; }
.system-caption { padding: clamp(19px,2.2vw,34px); }
.system-caption h3 { font-size: clamp(26px,2.6vw,42px); line-height: 1.05; font-weight: 570; letter-spacing: -.045em; }
.system-caption p { color: var(--sub); font-size: 15px; margin-top: 9px; }
.system-caption .icon { width: 21px; height: 21px; color: var(--red); }
.case-covers {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1.12fr 1fr;
  grid-template-rows: repeat(3,minmax(0,1fr));
  gap: 15px clamp(22px,3.2vw,52px);
}
.case-covers li { min-width: 0; }
.case-covers li:first-child { grid-row: span 3; }
.case-covers a { display: grid; height: 100%; grid-template-columns: 35% 1fr; align-items: center; gap: clamp(14px,2vw,28px); border-bottom: 1px solid var(--line); padding-bottom: 14px; }
.case-cover { overflow: hidden; aspect-ratio: 1.85; }
.case-name h3 { font-size: clamp(19px,1.58vw,27px); font-weight: 600; line-height: 1.4; letter-spacing: -.035em; }
.case-name .icon { width: 17px; height: 17px; }
.case-covers li:first-child a { grid-template-columns: 1fr; grid-template-rows: minmax(0,1fr) auto; gap: 0; padding-bottom: 0; border: 0; background: #191e27; color: #fff; }
.case-covers li:first-child .case-cover { aspect-ratio: auto; height: 100%; min-height: 0; }
.case-covers li:first-child .case-name { padding: 17px 24px; }
.case-covers li:first-child a:hover h3 { color: #fff; text-decoration: underline; text-underline-offset: .24em; }
@media (prefers-reduced-motion:no-preference) {
  .business-image img, .case-cover img, .system-art img { transition: transform .35s ease; }
  .business-card:hover img, .case-covers a:hover img, .system-card:hover img { transform: scale(1.025); }
}
@media (max-width: 880px) and (min-width: 701px) {
  .business-grid { gap: 15px; }
  .business-card p { font-size: 13px; }
  .business-title { gap: 4px; }
  .business-title h3 { font-size: 23px; }
  .business-title .icon { width: 15px; height: 15px; }
}
@media (max-width: 700px) {
  .hero-inner { min-height: clamp(244px,54vw,342px); }
  .hero-art { left: 48%; clip-path: polygon(12% 0,100% 0,100% 100%,0 100%); }
  .hero-art img { object-position: 78% 50%; }
  .hero-copy { padding: 28px 0; }
  .hero-copy h1 { font-size: clamp(35px,7.9vw,53px); line-height: 1.24; }
  .hero-link { margin-top: 16px; font-size: 13px; gap: 13px; }
  .business-grid { grid-template-columns: 1fr; gap: 0; }
  .business-card {
    display: grid;
    grid-template-columns: minmax(0,1fr) clamp(92px,26vw,145px);
    grid-template-rows: auto auto;
    gap: 5px 16px;
    padding-block: 18px;
    align-content: center;
  }
  .business-title { align-self: end; justify-content: flex-start; gap: 9px; }
  .business-title h3 { font-size: clamp(22px,5vw,28px); }
  .business-title .icon { width: 14px; height: 14px; }
  .business-card p { align-self: start; font-size: 13px; line-height: 1.6; margin: 0; }
  .business-image { grid-column: 2; grid-row: 1 / 3; margin: 0; aspect-ratio: 1.34; align-self: center; }
  .business-card:last-child { border-bottom: 1px solid var(--line); }
  .section-label { margin-bottom: 14px; }
  .system-shelf { grid-template-columns: 1fr; gap: 20px; }
  .system-art { aspect-ratio: 2.15; }
  .section-heading { font-size: 31px; }
  .case-covers { display: flex; flex-direction: column; gap: 15px; }
  .case-covers li:first-child .case-cover { aspect-ratio: 1.95; }
  .case-covers li:first-child .case-name { padding: 15px 18px; }
}
@media (max-width: 355px) {
  .business-card { column-gap: 8px; }
  .business-title { gap: 5px; }
  .business-title h3 { font-size: 20px; }
  .hero-copy h1 { font-size: 32px; }
}