:root {
  --case-ink: #101923;
  --case-muted: #62717d;
  --case-line: #d8e0e5;
  --case-paper: #ffffff;
  --case-ground: #f3f5f6;
  --case-orange: #ef6b2e;
  --case-cyan: #00a6b4;
  --case-max: 1320px;
}

body.case-detail-v3 {
  margin: 0;
  background: var(--case-paper);
  color: var(--case-ink);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
}

.case-detail-v3 *, .case-detail-v3 *::before, .case-detail-v3 *::after { box-sizing: border-box; }
.case-detail-v3 img, .case-detail-v3 video { display: block; max-width: 100%; }
.case-detail-v3 a { color: inherit; }
.case-detail-v3 .sub-main { padding-top: 0; }
.case-detail-v3 [data-reveal] { opacity: 1 !important; transform: none !important; }
.case-detail-v3 .mobile-contact-bar { display: none !important; }

/* Unified site header */
.case-detail-v3 .topbar {
  position: relative;
  z-index: 20;
  width: 100%;
  min-height: 78px;
  padding: 0 max(32px, calc((100vw - var(--case-max)) / 2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 26px;
  border-bottom: 1px solid var(--case-line);
  background: #fff;
}
.case-detail-v3 .brand { display: inline-flex; align-items: center; gap: 11px; flex: 0 0 auto; }
.case-detail-v3 .brand-logo { width: 37px; height: 37px; object-fit: contain; }
.case-detail-v3 .brand span { display: block; line-height: 1; }
.case-detail-v3 .brand-text { font-size: 17px; letter-spacing: 0; }
.case-detail-v3 .brand small { display: none; }
.case-detail-v3 .desktop-nav { display: flex; align-items: center; gap: 28px; margin-left: auto; }
.case-detail-v3 .desktop-nav a { position: relative; padding: 28px 0 25px; color: #28343d; font-size: 15px; font-weight: 600; text-decoration: none; }
.case-detail-v3 .desktop-nav a::after { content: ""; position: absolute; left: 0; right: 0; bottom: 19px; height: 2px; background: var(--case-orange); transform: scaleX(0); transform-origin: left; transition: transform .22s ease; }
.case-detail-v3 .desktop-nav a:hover::after, .case-detail-v3 .desktop-nav a.active::after { transform: scaleX(1); }
.case-detail-v3 .desktop-nav a:last-child { min-height: 42px; padding: 9px 17px; border: 1px solid var(--case-ink); border-radius: 3px; background: var(--case-ink); color: #fff; }
.case-detail-v3 .desktop-nav a:last-child::after { display: none; }
.case-detail-v3 .menu-btn { display: none; }
.case-detail-v3 .detail-hero-media { position: relative; }
.case-detail-v3 .case-image-note { position: absolute; right: 16px; bottom: 16px; margin: 0; padding-top: 8px; border-top: 1px solid rgba(255,255,255,.65); color: #fff; font-size: 12px; text-shadow: 0 1px 3px rgba(0,0,0,.6); }

/* Project hero */
.case-detail-v3 .detail-hero {
  width: min(var(--case-max), calc(100% - 64px));
  margin: 0 auto;
  padding: 82px 0 60px;
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(420px, 1.05fr);
  gap: 72px;
  align-items: center;
  background: transparent;
}
.case-detail-v3 .detail-hero-grid { display: contents; }
.case-detail-v3 .detail-hero-body { padding: 0; }
.case-detail-v3 .eyebrow { margin: 0 0 14px; color: var(--case-orange); font-size: 13px; font-weight: 800; letter-spacing: 0; }
.case-detail-v3 .breadcrumb { margin: 0 0 20px; color: var(--case-muted); font-size: 14px; }
.case-detail-v3 .breadcrumb a { text-decoration: underline; text-decoration-color: #b7c1c7; text-underline-offset: 4px; }
.case-detail-v3 .detail-hero h1 { max-width: 720px; margin: 0; font-size: clamp(43px, 4.5vw, 64px); line-height: 1.12; letter-spacing: 0; text-wrap: balance; }
.case-detail-v3 .hero-text { max-width: 650px; margin: 22px 0 0; color: var(--case-muted); font-size: 17px; }
.case-detail-v3 .hero-actions { display: flex; flex-wrap: wrap; gap: 11px; margin-top: 30px; }
.case-detail-v3 .btn { min-height: 48px; padding: 0 21px; display: inline-flex; align-items: center; justify-content: center; border-radius: 3px; font-weight: 700; text-decoration: none; }
.case-detail-v3 .btn-primary { border: 1px solid var(--case-ink); background: var(--case-ink); color: #fff; }
.case-detail-v3 .btn-secondary { border: 1px solid var(--case-line); background: #fff; color: var(--case-ink); }
.case-detail-v3 .detail-hero-media { min-height: 420px; overflow: hidden; background: #16232e; }
.case-detail-v3 .detail-hero-media img, .case-detail-v3 .detail-hero-media video { width: 100%; height: 100%; min-height: 420px; object-fit: cover; }

/* Summary data */
.case-detail-v3 .stats-band { width: min(var(--case-max), calc(100% - 64px)); margin: 0 auto; padding: 0; border-top: 1px solid var(--case-line); border-bottom: 1px solid var(--case-line); background: transparent; }
.case-detail-v3 .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.case-detail-v3 .stats-grid article { min-height: 104px; padding: 22px 20px; border-right: 1px solid var(--case-line); }
.case-detail-v3 .stats-grid article:last-child { border-right: 0; }
.case-detail-v3 .stats-grid p { margin: 0 0 7px; color: var(--case-muted); font-size: 13px; }
.case-detail-v3 .stats-grid strong { font-size: 17px; line-height: 1.45; }

/* Case narrative */
.case-detail-v3 .section { width: min(var(--case-max), calc(100% - 64px)); margin: 0 auto; padding: 76px 0; border-top: 1px solid var(--case-line); background: transparent; }
.case-detail-v3 .stats-band + .section { border-top: 0; padding-top: 48px; }
.case-detail-v3 .case-facts { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--case-line); border-bottom: 1px solid var(--case-line); }
.case-detail-v3 .case-facts article { min-height: 128px; padding: 25px 28px; border: 0; border-right: 1px solid var(--case-line); background: transparent; }
.case-detail-v3 .case-facts article:last-child { border-right: 0; }
.case-detail-v3 .case-facts h2 { margin: 0 0 8px; font-size: 16px; }
.case-detail-v3 .case-facts p { margin: 0; color: var(--case-muted); font-size: 16px; }
.case-detail-v3 .case-story-grid, .case-detail-v3 .case-evidence-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 54px; }
.case-detail-v3 .story-card, .case-detail-v3 .case-evidence-card { padding: 24px 0 0; border: 0 !important; border-top: 2px solid var(--case-ink) !important; border-radius: 0 !important; background: transparent !important; box-shadow: none !important; }
.case-detail-v3 .story-card h2, .case-detail-v3 .case-evidence-card h2 { margin: 0 0 16px; font-size: clamp(27px, 2.3vw, 34px); line-height: 1.22; letter-spacing: 0; text-wrap: balance; }
.case-detail-v3 .story-card p, .case-detail-v3 .story-card li, .case-detail-v3 .case-evidence-card li { color: var(--case-muted); font-size: 16px; }
.case-detail-v3 .story-card p, .case-detail-v3 .story-card ul, .case-detail-v3 .case-evidence-card ul { margin: 0; }
.case-detail-v3 .story-card ul, .case-detail-v3 .case-evidence-card ul { padding-left: 20px; }
.case-detail-v3 .case-evidence-card > span { display: block; margin-bottom: 9px; color: var(--case-orange); font-size: 12px; font-weight: 800; }
.case-detail-v3 .section-head { margin-bottom: 34px; display: grid; grid-template-columns: minmax(0, .9fr) minmax(320px, 1.1fr); gap: 64px; align-items: end; }
.case-detail-v3 .section-head h2 { margin: 0; font-size: clamp(34px, 3.5vw, 48px); line-height: 1.18; letter-spacing: 0; text-wrap: balance; }
.case-detail-v3 .section-intro { margin: 0; color: var(--case-muted); font-size: 16px; }
.case-detail-v3 .case-solution { margin-top: 38px; padding: 24px 28px; border: 0; background: var(--case-ink); color: #fff; }
.case-detail-v3 .case-solution p { margin: 0; font-size: 17px; }

/* Media becomes the evidence, not decoration */
.case-detail-v3 .detail-media-layout { display: grid; grid-template-columns: minmax(0, 1.32fr) minmax(300px, .68fr); gap: 18px; }
.case-detail-v3 .detail-media-layout--single { grid-template-columns: minmax(0, 1fr); }
.case-detail-v3 figure { margin: 0; }
.case-detail-v3 .video-feature, .case-detail-v3 .media-still { overflow: hidden; background: #17232d; }
.case-detail-v3 .video-feature img, .case-detail-v3 .video-feature video { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.case-detail-v3 .media-column { display: grid; gap: 18px; }
.case-detail-v3 .media-still img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.case-detail-v3 figcaption { padding: 14px 16px; background: #fff; color: var(--case-muted); font-size: 13px; }
.case-detail-v3 .case-intake { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 70px; padding: 0; border: 0; background: transparent; }
.case-detail-v3 .case-intake h2 { margin: 0; font-size: 38px; }
.case-detail-v3 .case-intake p, .case-detail-v3 .case-intake li { color: var(--case-muted); font-size: 16px; }
.case-detail-v3 .case-intake ul { columns: 2; gap: 38px; margin: 0; padding: 22px 0 0 20px; border-top: 2px solid var(--case-ink); }

/* Footer */
.case-detail-v3 .footer { width: 100%; margin: 0; padding: 54px max(32px, calc((100vw - var(--case-max)) / 2)) 30px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px 46px; border: 0; background: var(--case-ink); color: #d4dde1; }
.case-detail-v3 .footer p { margin: 0; color: #d4dde1; }
.case-detail-v3 .footer a { color: #fff; }
.case-detail-v3 .footer-note { grid-column: 1 / -1; margin-top: 18px; padding-top: 22px; display: flex; justify-content: space-between; border-top: 1px solid rgba(255, 255, 255, .2); color: #9fadb4; }

.case-detail-v3 a:focus-visible, .case-detail-v3 button:focus-visible { outline: 3px solid #ff9c63; outline-offset: 4px; }

@media (max-width: 1080px) {
  .case-detail-v3 .desktop-nav { gap: 17px; }
  .case-detail-v3 .detail-hero { grid-template-columns: minmax(0, .9fr) minmax(360px, 1.1fr); gap: 42px; }
  .case-detail-v3 .detail-hero h1 { font-size: 48px; }
}

@media (max-width: 1080px) {
  .case-detail-v3 .desktop-nav { display: none; }
  .case-detail-v3 .menu-btn { display: inline-flex; width: 44px; height: 44px; align-items: center; justify-content: center; }
  .case-detail-v3 .mobile-menu { top: 78px; }
  .case-detail-v3 .mobile-menu a { min-height: 46px; display: flex; align-items: center; }
}

@media (max-width: 760px) {
  .case-detail-v3 .topbar { min-height: 66px; padding: 0 18px; }
  .case-detail-v3 .brand-logo { width: 31px; height: 31px; }
  .case-detail-v3 .brand-text { font-size: 14px; }
  .case-detail-v3 .desktop-nav { display: none; }
  .case-detail-v3 .menu-btn { display: inline-flex; width: 44px; height: 44px; align-items: center; justify-content: center; }
  .case-detail-v3 .mobile-menu { top: 66px; }
  .case-detail-v3 .mobile-menu a { min-height: 46px; display: flex; align-items: center; }
  .case-detail-v3 .detail-hero { width: calc(100% - 36px); padding: 48px 0 38px; grid-template-columns: 1fr; gap: 28px; }
  .case-detail-v3 .detail-hero h1 { font-size: 36px; line-height: 1.16; }
  .case-detail-v3 .hero-text { font-size: 16px; }
  .case-detail-v3 .detail-hero-media, .case-detail-v3 .detail-hero-media img, .case-detail-v3 .detail-hero-media video { min-height: 250px; }
  .case-detail-v3 .stats-band, .case-detail-v3 .section { width: calc(100% - 36px); }
  .case-detail-v3 .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .case-detail-v3 .stats-grid article:nth-child(2) { border-right: 0; }
  .case-detail-v3 .stats-grid article:nth-child(-n+2) { border-bottom: 1px solid var(--case-line); }
  .case-detail-v3 .section { padding: 54px 0; }
  .case-detail-v3 .case-facts, .case-detail-v3 .case-story-grid, .case-detail-v3 .case-evidence-grid, .case-detail-v3 .section-head, .case-detail-v3 .detail-media-layout, .case-detail-v3 .case-intake { grid-template-columns: 1fr; }
  .case-detail-v3 .case-facts article { min-height: auto; padding: 19px 0; border-right: 0; border-bottom: 1px solid var(--case-line); }
  .case-detail-v3 .case-facts article:last-child { border-bottom: 0; }
  .case-detail-v3 .case-story-grid, .case-detail-v3 .case-evidence-grid { gap: 34px; }
  .case-detail-v3 .section-head { gap: 12px; margin-bottom: 27px; }
  .case-detail-v3 .section-head h2 { font-size: 34px; }
  .case-detail-v3 .story-card h2, .case-detail-v3 .case-evidence-card h2 { font-size: 27px; }
  .case-detail-v3 .case-solution { margin-top: 30px; }
  .case-detail-v3 .case-intake { gap: 28px; }
  .case-detail-v3 .case-intake h2 { font-size: 32px; }
  .case-detail-v3 .case-intake ul { columns: 1; }
  .case-detail-v3 .footer { padding: 42px 18px 26px; grid-template-columns: 1fr; }
  .case-detail-v3 .footer-note { grid-column: auto; flex-direction: column; gap: 9px; }
}

@media (prefers-reduced-motion: reduce) {
  .case-detail-v3 *, .case-detail-v3 *::before, .case-detail-v3 *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}

/* 2D vision detail direction: image evidence, inspection flow, result trace */
.case-detail-v3.page-vision-detail .detail-hero--vision { position: relative; }
.case-detail-v3.page-vision-detail .detail-hero--vision::before {
  content: "2D / INSPECTION RECORD";
  position: absolute;
  top: 24px;
  right: 0;
  color: var(--case-cyan);
  font-family: Manrope, Arial, sans-serif;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .1em;
}
.case-detail-v3.page-vision-detail .detail-hero-media {
  position: relative;
  border-top: 3px solid var(--case-cyan);
  box-shadow: 12px 12px 0 #e8eef0;
}
.case-detail-v3.page-vision-detail .detail-hero-media::after {
  content: "FIELD IMAGE";
  position: absolute;
  right: 14px;
  bottom: 12px;
  padding: 4px 7px;
  color: #dff8f9;
  background: rgba(8, 20, 27, .76);
  font-family: Manrope, Arial, sans-serif;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: .08em;
}
.case-detail-v3.page-vision-detail .stats-band { background: #f7fafb; }
.case-detail-v3.page-vision-detail .stats-grid strong {
  font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
}
.case-detail-v3 .vision-flow-section { background: var(--case-ground); }
.case-detail-v3 .vision-flow-section .section-head { margin-bottom: 31px; }
.case-detail-v3 .vision-flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--case-line);
  border-left: 1px solid var(--case-line);
  list-style: none;
}
.case-detail-v3 .vision-flow li {
  position: relative;
  min-height: 190px;
  padding: 22px 22px 24px;
  border-right: 1px solid var(--case-line);
  border-bottom: 1px solid var(--case-line);
  background: #fff;
}
.case-detail-v3 .vision-flow li::before,
.case-detail-v3.page-vision-detail .capability-rail-item::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 38px;
  height: 2px;
  background: var(--case-cyan);
}
.case-detail-v3 .vision-flow li span {
  color: var(--case-cyan);
  font-family: Manrope, Arial, sans-serif;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .08em;
}
.case-detail-v3 .vision-flow li strong {
  display: block;
  margin-top: 27px;
  font-size: 20px;
  line-height: 1.3;
}
.case-detail-v3 .vision-flow li p {
  margin: 12px 0 0;
  color: var(--case-muted);
  font-size: 14px;
  line-height: 1.7;
}
.case-detail-v3.page-vision-detail .capability-rail {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--case-line);
  border-left: 1px solid var(--case-line);
  gap: 0;
  background: transparent;
}
.case-detail-v3.page-vision-detail .capability-rail-item {
  position: relative;
  min-height: 190px;
  padding: 22px 22px 24px;
  border-right: 1px solid var(--case-line);
  border-bottom: 1px solid var(--case-line);
  background: #fff;
}
.case-detail-v3.page-vision-detail .capability-number {
  margin-bottom: 0;
  color: var(--case-cyan);
  font-family: Manrope, Arial, sans-serif;
  letter-spacing: .08em;
}
.case-detail-v3.page-vision-detail .capability-rail-item h3 {
  margin-top: 27px;
  font-size: 20px;
  line-height: 1.3;
}
.case-detail-v3.page-vision-detail .capability-rail-item p,
.case-detail-v3.page-vision-detail .capability-rail-item ul { font-size: 14px; }

@media (max-width: 760px) {
  .case-detail-v3.page-vision-detail .detail-hero--vision::before {
    top: 16px;
    right: 0;
    font-size: 9px;
  }
  .case-detail-v3.page-vision-detail .detail-hero-media { box-shadow: 7px 7px 0 #e8eef0; }
  .case-detail-v3.page-vision-detail .vision-flow { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .case-detail-v3 .vision-flow li {
    min-height: 155px;
    padding: 17px 15px 18px;
  }
  .case-detail-v3 .vision-flow li strong {
    margin-top: 21px;
    font-size: 17px;
  }
  .case-detail-v3 .vision-flow li p { margin-top: 8px; font-size: 13px; }
  .case-detail-v3.page-vision-detail .capability-rail { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .case-detail-v3.page-vision-detail .capability-rail-item {
    min-height: 155px;
    padding: 17px 15px 18px;
  }
  .case-detail-v3.page-vision-detail .capability-rail-item h3 {
    margin-top: 21px;
    font-size: 17px;
  }
  .case-detail-v3.page-vision-detail .capability-rail-item p,
  .case-detail-v3.page-vision-detail .capability-rail-item ul { font-size: 13px; }
}