.service-page { background: var(--paper); }
.detail-header {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  width: 100%;
  padding: 25px 4.5vw;
  color: white;
}
.detail-header .language-switcher { justify-self: end; }
.back-link {
  display: flex;
  align-items: center;
  gap: 12px;
  color: rgba(255,255,255,.65);
  font-size: 10px;
  letter-spacing: .15em;
}
.detail-hero {
  position: relative;
  min-height: 690px;
  overflow: hidden;
  display: flex;
  align-items: center;
  color: white;
  background:
    radial-gradient(circle at 77% 42%, rgba(233,90,63,.16), transparent 28%),
    var(--ink);
}
.detail-hero-content {
  position: relative;
  z-index: 2;
  width: min(850px, 72vw);
  margin-left: 10vw;
  padding-top: 70px;
}
.detail-kicker {
  margin: 0 0 25px;
  color: var(--gold);
  font-size: 11px;
  letter-spacing: .22em;
}
.detail-hero h1 {
  margin: 0;
  font-size: clamp(58px, 7vw, 108px);
  line-height: .98;
  letter-spacing: -.055em;
  font-weight: 500;
}
.detail-lead {
  max-width: 630px;
  margin: 35px 0;
  color: rgba(255,255,255,.64);
  font-size: 15px;
  line-height: 1.9;
}
.detail-number {
  position: absolute;
  right: 5vw;
  bottom: -3vw;
  color: rgba(255,255,255,.035);
  font-size: 25vw;
  line-height: .8;
  font-weight: 600;
}
.detail-orbit {
  position: absolute;
  right: -8vw;
  top: 50%;
  width: 42vw;
  aspect-ratio: 1;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 50%;
  transform: translateY(-50%);
}
.detail-orbit::before {
  content: "";
  position: absolute;
  inset: 20%;
  border: 1px solid rgba(233,90,63,.4);
  border-radius: 50%;
}
.detail-orbit::after {
  content: "";
  position: absolute;
  inset: 37%;
  border-radius: 50%;
  background: var(--accent);
}
.service-overview,
.service-evidence,
.service-flow { padding: 130px 8vw; }
.overview-heading,
.evidence-heading {
  display: grid;
  grid-template-columns: 1fr 3fr;
  gap: 5vw;
  margin-bottom: 70px;
}
.overview-heading h2,
.evidence-heading h2 {
  max-width: 880px;
  margin: 0;
  font-size: clamp(37px, 4.3vw, 65px);
  line-height: 1.2;
  letter-spacing: -.04em;
  font-weight: 500;
}
.scope-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--ink);
}
.scope-card {
  min-height: 250px;
  padding: 28px 26px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.scope-card:last-child { border-right: 0; }
.scope-card span {
  font-size: 10px;
  letter-spacing: .18em;
  color: rgba(16,27,45,.4);
}
.scope-card h3 {
  margin: 65px 0 14px;
  font-size: 21px;
  line-height: 1.3;
  font-weight: 500;
}
.scope-card p {
  margin: 0;
  color: rgba(16,27,45,.58);
  font-size: 12px;
  line-height: 1.8;
}
.service-evidence { color: white; background: var(--ink); }
.service-evidence .section-label { color: var(--gold); }
.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-bottom: 65px;
  border-top: 1px solid var(--white-line);
  border-left: 1px solid var(--white-line);
}
.metric {
  min-height: 145px;
  padding: 25px;
  border-right: 1px solid var(--white-line);
  border-bottom: 1px solid var(--white-line);
}
.metric b {
  display: block;
  color: var(--accent);
  font-size: clamp(32px, 3.8vw, 58px);
  letter-spacing: -.04em;
  font-weight: 500;
}
.metric span { color: rgba(255,255,255,.55); font-size: 11px; line-height: 1.5; }
.case-gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}
.case-figure {
  margin: 0;
  overflow: hidden;
  background: #080e18;
}
.case-figure img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transition: transform .5s ease;
}
.case-figure:hover img { transform: scale(1.018); }
.case-figure figcaption {
  padding: 18px 20px;
  color: rgba(255,255,255,.62);
  border-top: 1px solid var(--white-line);
  font-size: 11px;
  line-height: 1.6;
}
.source-note {
  margin: 20px 0 0;
  color: rgba(255,255,255,.32);
  font-size: 9px;
  letter-spacing: .06em;
}
.service-flow { border-bottom: 1px solid var(--line); }
.flow-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 50px;
  border-top: 1px solid var(--ink);
}
.flow-step { padding: 25px 25px 15px 0; }
.flow-step + .flow-step { padding-left: 25px; border-left: 1px solid var(--line); }
.flow-step span { color: var(--accent); font-size: 10px; letter-spacing: .18em; }
.flow-step h3 { margin: 45px 0 10px; font-size: 20px; font-weight: 500; }
.flow-step p { margin: 0; color: rgba(16,27,45,.55); font-size: 12px; line-height: 1.7; }
.detail-cta { padding: 125px 8vw; color: white; background: var(--accent); }
.detail-cta > p { margin: 0 0 24px; font-size: 10px; letter-spacing: .2em; opacity: .65; }
.detail-cta h2 {
  max-width: 900px;
  margin: 0;
  font-size: clamp(48px, 6vw, 90px);
  line-height: 1.08;
  letter-spacing: -.05em;
  font-weight: 500;
}
.detail-contact {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin-top: 75px;
  border-top: 1px solid rgba(255,255,255,.5);
}
.detail-contact a {
  display: flex;
  justify-content: space-between;
  padding: 23px 0;
  border-bottom: 1px solid rgba(255,255,255,.5);
  font-size: clamp(16px, 2vw, 28px);
}
.detail-contact a:first-child { padding-right: 35px; }
.detail-contact a:last-child { padding-left: 35px; border-left: 1px solid rgba(255,255,255,.5); }
.detail-footer {
  display: flex;
  justify-content: space-between;
  padding: 30px 5vw;
  color: rgba(255,255,255,.52);
  background: var(--ink);
  font-size: 9px;
  letter-spacing: .15em;
}
html[lang="zh"] .detail-hero h1,
html[lang="zh"] .overview-heading h2,
html[lang="zh"] .evidence-heading h2,
html[lang="zh"] .detail-cta h2 { font-family: var(--serif-cn); letter-spacing: -.02em; }

@media (max-width: 850px) {
  .detail-header { grid-template-columns: 1fr auto; }
  .detail-header .back-link { display: none; }
  .detail-hero-content { width: 84vw; margin-left: 8vw; }
  .scope-grid, .metric-grid { grid-template-columns: repeat(2, 1fr); }
  .case-gallery { grid-template-columns: 1fr; }
  .flow-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .detail-header { padding: 20px 6vw; }
  .detail-header .language-switcher button { padding: 4px; }
  .detail-hero { min-height: 670px; }
  .detail-hero-content { width: 88vw; margin-left: 6vw; }
  .detail-hero h1 { font-size: 51px; }
  .detail-orbit { width: 85vw; right: -52vw; }
  .service-overview, .service-evidence, .service-flow { padding: 90px 6vw; }
  .overview-heading, .evidence-heading { grid-template-columns: 1fr; gap: 15px; }
  .overview-heading h2, .evidence-heading h2 { font-size: 37px; }
  .scope-grid, .metric-grid, .flow-grid { grid-template-columns: 1fr; }
  .scope-card { min-height: auto; border-right: 0; }
  .scope-card h3 { margin-top: 35px; }
  .metric { min-height: 120px; }
  .flow-step + .flow-step { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
  .detail-cta { padding: 90px 6vw; }
  .detail-contact { grid-template-columns: 1fr; }
  .detail-contact a:first-child, .detail-contact a:last-child { padding: 20px 0; border-left: 0; }
}