.upgrade-page {
  --gold: #E7C4AE;
  --gold-strong: #D5A642;
  --display-sans: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", sans-serif;
}
.upgrade-home h1, .upgrade-home h2, .upgrade-home h3,
.upgrade-case h1, .upgrade-case h2, .upgrade-case h3 {
  font-family: var(--display-sans);
  font-weight: 800;
  letter-spacing: -.035em;
}
.upgrade-home .site-header, .upgrade-case .site-header {
  width: 100%;
  padding: 0 48px;
  border-bottom: 1px solid #426156;
  background: var(--ink);
}
.upgrade-home .brand, .upgrade-case .brand,
.upgrade-home .brand-name, .upgrade-case .brand-name { color: var(--white); }
.upgrade-home .brand-role, .upgrade-case .brand-role { color: #B9C8BD; }
.upgrade-home .primary-nav a, .upgrade-case .primary-nav a { color: #E4ECE5; }
.upgrade-home .primary-nav a:hover, .upgrade-home .primary-nav a[aria-current="page"],
.upgrade-case .primary-nav a:hover, .upgrade-case .primary-nav a[aria-current="page"] { color: var(--gold); }
.upgrade-home .primary-nav a[aria-current="page"]::after,
.upgrade-case .primary-nav a[aria-current="page"]::after { background: var(--gold); }
.upgrade-home .header-contact, .upgrade-case .header-contact { border-color: var(--gold); color: var(--gold); }
.upgrade-home .header-contact:hover, .upgrade-case .header-contact:hover { background: var(--gold); color: var(--ink); }
.upgrade-home .hero {
  display: grid;
  grid-template-columns: 1.04fr .96fr;
  min-height: calc(100vh - 96px);
  background: var(--ink);
  color: var(--white);
}
.upgrade-home .hero-copy {
  align-self: center;
  max-width: 680px;
  padding: 68px 56px 60px 80px;
}
.upgrade-home .hero .eyebrow { margin-bottom: 18px; color: var(--gold); font-size: 12px; }
.upgrade-home .hero-name { margin-bottom: 22px; color: var(--gold); font-family: var(--display-sans); font-size: 21px; font-weight: 600; letter-spacing: .12em; }
.upgrade-home .hero h1 { color: var(--white); font-size: clamp(52px, 4.5vw, 68px); line-height: 1.18; letter-spacing: -.055em; }
.upgrade-home .hero h1 em { color: var(--gold); font-style: normal; }
.upgrade-home .hero-role { margin: 22px 0 0; color: var(--white); font-family: var(--display-sans); font-size: 23px; font-weight: 600; }
.upgrade-home .hero-intro { max-width: 590px; margin-top: 20px; color: #C5D1C9; font-size: 17px; line-height: 1.85; }
.upgrade-home .hero-proof { display: grid; gap: 0; margin: 30px 0 0; padding: 0; list-style: none; border-top: 1px solid #4A6359; }
.upgrade-home .hero-proof li { display: grid; grid-template-columns: 155px 1fr; gap: 18px; padding: 13px 0; border-bottom: 1px solid #4A6359; }
.upgrade-home .hero-proof strong { color: var(--gold); font-family: var(--display-sans); font-size: 16px; }
.upgrade-home .hero-proof span { color: #E4ECE5; font-size: 14px; }
.upgrade-home .hero .button-row { margin-top: 28px; }
.upgrade-home .hero .button { border-color: var(--gold); background: var(--gold); color: var(--ink); }
.upgrade-home .hero .button:hover { background: var(--white); }
.upgrade-home .hero .button.secondary { background: transparent; color: var(--gold); }
.upgrade-home .hero .button.secondary:hover { background: #2A4B3E; }
.upgrade-home .hero-portrait { position: relative; min-height: calc(100vh - 96px); margin: 0; padding: 0; overflow: hidden; border: 0; background: #343837; }
.upgrade-home .hero-portrait::before { display: none; }
.upgrade-home .hero-portrait img { width: 100%; height: 100%; aspect-ratio: auto; object-fit: cover; object-position: center top; }
.upgrade-home .hero-portrait figcaption { position: absolute; right: 0; bottom: 0; left: 0; display: flex; justify-content: space-between; gap: 16px; padding: 14px 24px; background: rgba(23, 53, 44, .94); color: #DCE7DE; font-size: 11px; letter-spacing: .05em; }
.upgrade-home .section-heading h2 { font-size: 40px; }
.upgrade-home .section-heading p { font-size: 16px; }
.upgrade-home .perspective { border-top-width: 3px; }
.upgrade-home .perspective-label { font-family: var(--display-sans); }
.upgrade-home .perspective h3 { font-size: 24px; }
.upgrade-home .credentials { display: grid; grid-template-columns: .78fr 1.22fr; gap: 72px; padding: 84px 0; }
.upgrade-home .credentials-intro h2 { margin-bottom: 22px; font-size: 39px; }
.upgrade-home .credentials-intro p { color: var(--muted); }
.upgrade-home .credential-education { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin-bottom: 36px; }
.upgrade-home .credential-education article { padding: 24px; background: var(--ink); color: #E8EEE8; }
.upgrade-home .credential-education span { display: block; margin-bottom: 12px; color: var(--gold); font-size: 12px; letter-spacing: .08em; }
.upgrade-home .credential-education strong { display: block; color: var(--white); font-family: var(--display-sans); font-size: 20px; line-height: 1.55; }
.upgrade-home .credential-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 28px; }
.upgrade-home .credential-list article { padding: 19px 0; border-top: 2px solid var(--ink); }
.upgrade-home .credential-list strong { display: block; color: var(--ink); font-family: var(--display-sans); font-size: 19px; }
.upgrade-home .credential-list span { display: block; margin-top: 5px; color: var(--muted); font-size: 13px; }
.upgrade-home .credential-note { grid-column: 2; margin: 24px 0 0; color: var(--muted); font-size: 13px; }
.upgrade-home .featured-work { padding: 88px 0; }
.upgrade-home .featured-case { display: grid; grid-template-columns: .9fr 1.1fr; gap: 72px; align-items: center; padding: 48px; border: 1px solid #4A6359; }
.upgrade-home .case-number { color: var(--gold); font-family: var(--display-sans); font-size: clamp(120px, 14vw, 196px); font-weight: 800; letter-spacing: -.08em; line-height: .9; }
.upgrade-home .case-number small { display: block; margin-top: 18px; color: #C5D1C9; font-size: 15px; font-weight: 400; letter-spacing: .08em; }
.upgrade-home .featured-case h3 { margin: 12px 0 18px; color: var(--white); font-size: 34px; }
.upgrade-home .featured-case p { color: #C5D1C9; }
.upgrade-home .featured-case .project-meta { color: var(--gold); }
.upgrade-home .featured-case .text-link { color: var(--white); }
.upgrade-home .case-artifact-mini { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-top: 26px; }
.upgrade-home .case-artifact-mini div { padding: 12px 8px; border: 1px solid #4A6359; color: #DCE7DE; font-size: 12px; text-align: center; }
.upgrade-home .other-cases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 40px; }
.upgrade-home .other-cases a { padding-top: 20px; border-top: 1px solid #4A6359; }
.upgrade-home .other-cases span, .other-cases strong { display: block; }
.upgrade-home .other-cases span { margin-bottom: 10px; color: var(--gold); font-size: 12px; }
.upgrade-home .other-cases strong { color: var(--white); font-family: var(--display-sans); font-size: 21px; line-height: 1.5; }
.upgrade-home .other-cases p { color: #C5D1C9; font-size: 14px; }
.upgrade-home .career-list strong { font-family: var(--display-sans); }
.upgrade-home .method-sample strong { font-family: var(--display-sans); font-size: 18px; }
.upgrade-home .cta-panel h3 { font-size: 29px; }
.upgrade-home .site-footer { background: var(--paper); }

.upgrade-case { background: var(--paper); }
.upgrade-case .breadcrumb { padding: 22px 0; background: var(--ink); color: #B9C8BD; }
.upgrade-case .breadcrumb a:hover { color: var(--gold); }
.upgrade-case .detail-hero { max-width: none; padding: 60px 0 64px; border-bottom: 0; background: var(--ink); color: #E8EEE8; }
.upgrade-case .detail-hero h1 { max-width: 760px; color: var(--white); font-size: clamp(44px, 4.2vw, 58px); line-height: 1.25; }
.upgrade-case .detail-client { color: var(--gold); font-family: var(--display-sans); }
.upgrade-case .detail-hero .lead { color: #C5D1C9; }
.upgrade-case .project-facts { border-top-color: var(--gold); }
.upgrade-case .project-facts > div { border-bottom-color: #4A6359; }
.upgrade-case .project-facts dt { color: #B9C8BD; }
.upgrade-case .project-facts dd { color: var(--white); }
.upgrade-case .detail-layout { max-width: 1320px; gap: 64px; }
.upgrade-case .detail-aside h2 { font-size: 30px; }
.upgrade-case .detail-section h2 { font-size: 32px; }
.upgrade-case .work-figure { border: 1px solid #AAB8AE; box-shadow: 0 18px 44px rgba(23, 53, 44, .08); }
.upgrade-case .work-figure-heading { background: #F5F2EB; }
.upgrade-case .work-figure-heading strong { font-family: var(--display-sans); }
.upgrade-case .level-workbench { position: relative; padding: 34px; background: #FFFDF8; }
.upgrade-case .sequence-labels { gap: 12px; }
.upgrade-case .sequence-labels span { padding: 13px 8px; background: var(--ink); font-family: var(--display-sans); font-weight: 600; }
.upgrade-case .level-scale { gap: 7px; }
.upgrade-case .level-scale li { min-height: 34px; border-color: #9BAFA1; color: var(--ink); font-weight: 600; }
.upgrade-case .level-scale li:nth-child(3n) { background: #DCE7DE; }
.upgrade-case .workbench-notes { padding-top: 20px; border-top: 1px solid #C9CEC5; }
.upgrade-case .workbench-notes span { color: var(--muted-tint); font-weight: 600; }
.upgrade-case .detail-next a:hover { background: #DCE7DE; }
.upgrade-home .site-footer .brand,
.upgrade-home .site-footer .brand-name,
.upgrade-case .site-footer .brand,
.upgrade-case .site-footer .brand-name { color: var(--ink); }
.upgrade-case .detail-hero .eyebrow { color: var(--gold); }
.upgrade-case .detail-hero h1 { font-size: clamp(42px, 3.6vw, 50px); }

@media (prefers-reduced-motion: no-preference) {
  .upgrade-home .hero-copy { animation: upgrade-copy 500ms ease-out both; }
  .upgrade-home .hero-portrait { animation: upgrade-portrait 600ms ease-out both; }
  .upgrade-case .work-figure { animation: upgrade-artifact 550ms ease-out both; }
}
@keyframes upgrade-copy { from { opacity: .01; transform: translateX(-16px); } to { opacity: 1; transform: translateX(0); } }
@keyframes upgrade-portrait { from { opacity: .01; transform: translateX(16px); } to { opacity: 1; transform: translateX(0); } }
@keyframes upgrade-artifact { from { opacity: .01; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }