:root{--story-navy:#002b59;--story-blue:#004896;--story-blue-soft:#2e78aa;--story-ink:#1a252f;--story-muted:#5e6e7a;--story-paper:#f4f7fb;--story-line:rgba(0,72,150,.15);--story-orange:#f28c19}
html{scroll-behavior:smooth}
body.case-story-preview{margin:0;color:var(--story-ink);background:var(--story-paper);font-family:"Microsoft YaHei","PingFang SC",sans-serif;overflow-x:hidden}
.case-story-preview *{box-sizing:border-box}.case-story-preview a{text-decoration:none}.story-shell{width:min(1180px,calc(100% - 48px));margin:0 auto}
.story-preview-bar{height:32px;display:flex;align-items:center;justify-content:center;gap:12px;background:var(--story-navy);color:#a9bfd0;font-size:11px;letter-spacing:.05em}.story-preview-bar span{padding-right:12px;border-right:1px solid rgba(255,255,255,.22)}.story-preview-bar strong{color:#fff;font-weight:600}
.story-site-header{position:relative;top:auto;z-index:10;background:#fff;border-bottom:1px solid #e5ebef;box-shadow:none}.story-site-header .nav{height:74px;max-width:1180px;padding:0;display:flex;align-items:center}.story-site-header .brand{margin-right:auto}.story-site-header .brand-logo{max-width:156px}.story-nav-name{font-family:Georgia,"Times New Roman",serif;font-size:11px;letter-spacing:.15em;color:#708697;margin-right:30px}.story-back{display:inline-flex;align-items:center;gap:8px;color:#143c5d;font-size:12px;font-weight:700;padding:10px 14px;border:1px solid #cbd8e1}
.story-hero{position:relative;min-height:560px;padding:88px 0 82px;background-color:#eef4f7;background-image:linear-gradient(90deg,rgba(244,247,251,.99) 0%,rgba(244,247,251,.97) 36%,rgba(244,247,251,.78) 53%,rgba(244,247,251,.2) 76%,rgba(244,247,251,.06) 100%),url("../images/case-center-hero-powder-journey-20260901.webp");background-size:cover;background-position:center center;overflow:hidden}.story-hero::before{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--story-line)}.hero-grid{position:relative;z-index:2}.hero-copy{width:min(600px,55%)}.story-eyebrow{margin:0 0 18px;color:var(--story-blue);font-size:10px;font-weight:800;letter-spacing:.2em}.hero-copy h1{margin:0;color:var(--story-navy);font-size:clamp(34px,3.2vw,44px);line-height:1.24;letter-spacing:-.035em;font-weight:760}.hero-description{margin:24px 0 0;color:var(--story-muted);font-size:13px;line-height:1.9;max-width:540px}.hero-key{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;max-width:540px;margin:26px 0 22px;background:var(--story-line);border:1px solid var(--story-line)}.hero-key span{display:flex;min-height:62px;padding:10px 12px;flex-direction:column;justify-content:center;background:rgba(255,255,255,.9);color:var(--story-muted);font-size:9px;line-height:1.5}.hero-key b{font:700 19px/1 Georgia,serif;color:var(--story-blue);margin-bottom:6px}.start-journey{display:inline-flex;align-items:center;gap:34px;padding:13px 16px;background:var(--story-blue);color:#fff;font-size:11px;font-weight:700;letter-spacing:.04em}.start-journey span{color:var(--story-orange);font-size:16px}
.journey-intro{background:#fff;border-top:1px solid #e1e8ed;border-bottom:1px solid #dde5eb}.intro-row{min-height:95px;display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}.intro-row p{margin:0;color:#6e8291;font-size:11px;line-height:1.7}.intro-row b{color:#23597f;margin-right:8px}
.case-journey{position:relative;background-color:var(--story-paper);background-image:linear-gradient(rgba(0,72,150,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(0,72,150,.035) 1px,transparent 1px);background-size:48px 48px;overflow:hidden}.journey-canvas{height:3030px;position:relative}.journey-canvas::before{content:"PROJECT RECORD / MATERIAL — PROCESS — RESULT";position:absolute;right:-146px;top:650px;transform:rotate(90deg);transform-origin:center;color:#9dafbb;font:10px/1 Georgia,serif;letter-spacing:.22em}.journey-path{position:absolute;inset:36px 0 auto;width:100%;height:2910px;overflow:visible;z-index:0}.path-shadow,.path-line{fill:none;stroke-linecap:round}.path-shadow{stroke:rgba(255,255,255,.9);stroke-width:9}.path-line{stroke:#8aa8bd;stroke-width:1.4;stroke-dasharray:3 9}
.journey-marker{position:absolute;width:58px;height:58px;border-radius:50%;display:grid;place-items:center;background:#f3f6f8;border:1px solid #8dabc0;color:#49728f;font:700 8px/1 Georgia,serif;letter-spacing:.08em;z-index:2}.marker-start{top:80px;left:116px}.marker-end{bottom:56px;left:612px;width:66px;height:66px;background:var(--story-navy);border-color:var(--story-navy);color:#fff}.marker-end span{text-align:center;font-family:"Microsoft YaHei","PingFang SC",sans-serif;font-weight:700;line-height:1.45;letter-spacing:.03em}
.story-card{position:absolute;width:480px;padding:32px 32px 28px;background:#fff;border:1px solid var(--story-line);box-shadow:0 20px 55px rgba(0,43,89,.10);z-index:3;scroll-margin-top:96px;transition:transform .22s ease,box-shadow .22s ease}.story-card:hover{transform:translateY(-6px);box-shadow:0 26px 70px rgba(0,43,89,.15)}.story-card::before{content:"";position:absolute;left:-1px;top:-1px;width:88px;height:3px;background:var(--story-blue)}
.card-index{position:absolute;right:26px;top:25px;display:flex;align-items:baseline;gap:5px;color:#7f94a3;font-family:Georgia,serif}.card-index span{font-size:25px;color:#174f79}.card-index small{font-size:9px}.card-powder{position:absolute;z-index:5;width:116px;height:116px;border-radius:50%;border:7px solid #fff;box-shadow:0 12px 30px rgba(8,47,81,.22)}
.powder{display:block;background-image:url("../images/case-material-samples-atlas-preview-20260901.webp");background-size:300% 200%;background-repeat:no-repeat;background-color:#0a3a66}.powder-graphite{background-position:0 0}.powder-pharma{background-position:50% 0}.powder-metal{background-position:100% 0}.powder-battery{background-position:0 100%}.powder-ceramic{background-position:50% 100%}.powder-electrolyte{background-position:100% 100%}
.card-heading{padding-right:96px;min-height:72px}.card-heading p{margin:0 0 7px;color:var(--story-blue-soft);font-size:9px;font-weight:800;letter-spacing:.08em}.card-heading h2{margin:0;color:var(--story-navy);font-size:22px;line-height:1.38;letter-spacing:-.02em}.card-summary{margin:16px 0 15px;color:var(--story-muted);font-size:11px;line-height:1.75}.case-inside{display:grid;grid-template-columns:152px minmax(0,1fr);gap:16px;min-height:128px;margin:0 0 15px;padding-top:14px;border-top:1px solid var(--story-line)}.case-photo{position:relative;height:128px;margin:0;overflow:hidden;background:#dce6ec}.case-photo img{display:block;width:100%;height:100%;object-fit:cover}.case-photo::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(0,43,89,.72),transparent 48%);pointer-events:none}.case-photo figcaption{position:absolute;left:9px;right:8px;bottom:7px;z-index:1;color:#fff;font-size:8px;letter-spacing:.05em}.case-points{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;justify-content:stretch}.case-points li{flex:1;display:grid;grid-template-columns:36px minmax(0,1fr);gap:8px;align-items:center;border-bottom:1px solid #e7edf1;font-size:9px;line-height:1.4}.case-points li:last-child{border-bottom:0}.case-points span{color:#94a4af}.case-points b{color:#36566d;font-weight:650}.case-result{margin:0;padding:13px 15px;background:#e8f1f8;display:grid;grid-template-columns:1fr auto;gap:3px 12px;align-items:center;min-height:58px}.case-result small{grid-column:1/-1;color:#7d96a7;font-size:8px;letter-spacing:.1em}.case-result strong{color:var(--story-blue);font-size:14px}.case-result span{color:#657c8c;font-size:8px;text-align:right}
.station-1{left:0;top:160px;width:500px}.station-1 .card-powder{left:-54px;top:64px}.station-1 .card-heading,.station-1 .card-summary{padding-left:50px}.station-2{right:14px;top:585px;width:470px}.station-2 .card-powder{right:-52px;top:78px}.station-2 .card-heading{padding-right:78px}.station-3{left:245px;top:1025px;width:460px}.station-3 .card-powder{left:-60px;top:-46px}.station-3 .card-heading{padding-left:62px;padding-right:78px}.station-3 .card-summary{padding-left:62px}.station-3.is-compact{padding-bottom:26px}.station-4{right:70px;top:1465px;width:490px}.station-4 .card-powder{right:-60px;bottom:72px}.station-4 .card-heading{padding-right:82px}.station-5{left:12px;top:1930px;width:530px}.station-5 .card-powder{left:-48px;bottom:-42px}.station-5 .card-heading,.station-5 .card-summary{padding-left:42px}.station-6{left:545px;top:2420px;width:510px;border-top:3px solid #155e92}.station-6::before{display:none}.station-6 .card-powder{right:-52px;top:-43px}.station-6 .card-heading{padding-right:78px}
.scroll-caption{position:absolute;display:flex;flex-direction:column;align-items:center;gap:7px;color:#6c8799;font-size:8px;letter-spacing:.12em;z-index:2}.scroll-caption::before{content:"";height:34px;border-left:1px solid #a6bac7}.scroll-caption i{font-style:normal;color:#dd862c;font-size:16px}.caption-1{top:480px;left:506px}.caption-4{top:1740px;right:285px}.journey-note{position:absolute;z-index:1;display:flex;gap:15px;align-items:flex-start;color:#8398a7}.journey-note b{font:700 46px/1 Georgia,serif;color:rgba(19,89,137,.11)}.journey-note span{font-size:9px;line-height:1.8;letter-spacing:.08em}.note-03{top:1115px;right:28px}
.story-closing{padding:90px 0;background:#fff;border-top:1px solid var(--story-line)}.closing-grid{display:grid;grid-template-columns:1.15fr .85fr auto;gap:65px;align-items:center}.closing-grid h2{margin:0;color:var(--story-navy);font-size:34px;line-height:1.35;letter-spacing:-.04em}.closing-grid>p{margin:0;color:var(--story-muted);font-size:12px;line-height:1.9}.closing-actions{display:flex;flex-direction:column;gap:8px}.closing-actions a{min-width:128px;padding:12px 15px;text-align:center;font-size:10px;font-weight:700;color:#fff;background:var(--story-blue)}.closing-actions a:last-child{background:var(--story-orange)}.story-footer{padding:24px 0;background:var(--story-navy);color:#91aabd;font-size:10px}.story-footer>.story-shell{display:flex;justify-content:space-between}
@media (max-width:1000px){.story-hero{padding:76px 0}.hero-copy{width:min(570px,66%)}.journey-canvas{height:3110px}.journey-path{transform:scaleX(.84);transform-origin:center}.station-1{left:3%}.station-2{right:3%}.station-3{left:18%}.station-4{right:4%}.station-5{left:3%}.station-6{left:auto;right:4%}.marker-start{left:12%}.marker-end{left:auto;right:38%}.journey-note{display:none}.closing-grid{grid-template-columns:1fr 1fr}.closing-actions{grid-column:1/-1;flex-direction:row}}
@media (max-width:720px){.story-shell{width:min(100% - 20px,1180px)}.story-preview-bar{font-size:9px;gap:8px}.story-preview-bar span{padding-right:8px}.story-site-header .nav{height:64px;padding:0 14px}.story-site-header .brand-logo{max-width:132px}.story-nav-name{display:none}.story-back{font-size:9px;padding:8px}.story-hero{min-height:0;padding:52px 0 46px;background-image:linear-gradient(180deg,rgba(244,247,251,.92) 0%,rgba(244,247,251,.96) 58%,rgba(244,247,251,.99) 100%),url("../images/case-center-hero-powder-journey-20260901.webp");background-position:68% center}.hero-copy{width:100%}.hero-copy h1{font-size:30px}.hero-description{font-size:11px;max-width:92%;margin-top:18px}.hero-key{grid-template-columns:1fr;margin:20px 0 18px;max-width:100%}.hero-key span{min-height:45px;flex-direction:row;justify-content:flex-start;align-items:center;gap:12px}.hero-key b{margin:0;width:29px}.intro-row{grid-template-columns:1fr;gap:0;padding:13px 0}.intro-row p{padding:10px 0;border-bottom:1px solid #e7ecef}.intro-row p:last-child{border-bottom:0}.case-journey{padding:46px 0 56px;background-size:36px 36px}.journey-canvas{height:auto;display:flex;flex-direction:column;gap:74px}.journey-canvas::before,.journey-path,.journey-marker,.scroll-caption,.journey-note{display:none}.story-card,.station-1,.station-2,.station-3,.station-4,.station-5,.station-6{position:relative;left:auto;right:auto;top:auto;width:calc(100% - 8px);padding:27px 22px 24px;margin:0;scroll-margin-top:76px;transform:none}.story-card:hover{transform:translateY(-3px)}.station-1,.station-3,.station-5{align-self:flex-start}.station-2,.station-4,.station-6{align-self:flex-end}.station-2{width:calc(100% - 18px)}.station-3{width:calc(100% - 10px)}.station-4{width:100%}.station-5{width:calc(100% - 12px)}.station-6{width:calc(100% - 4px)}.card-index{right:17px;top:18px}.card-index span{font-size:20px}.card-powder,.station-1 .card-powder,.station-2 .card-powder,.station-3 .card-powder,.station-4 .card-powder,.station-5 .card-powder,.station-6 .card-powder{width:90px;height:90px;left:auto;right:-6px;top:-34px;bottom:auto;border-width:5px}.card-heading,.station-1 .card-heading,.station-2 .card-heading,.station-3 .card-heading,.station-4 .card-heading,.station-5 .card-heading,.station-6 .card-heading{padding:0 70px 0 0;min-height:62px}.card-heading h2{font-size:18px}.card-summary,.station-1 .card-summary,.station-3 .card-summary,.station-5 .card-summary{padding:0;margin:13px 0;font-size:10px}.case-inside{grid-template-columns:118px minmax(0,1fr);gap:11px;min-height:112px;padding-top:12px;margin-bottom:13px}.case-photo{height:112px}.case-points li{grid-template-columns:30px minmax(0,1fr);gap:5px;font-size:8px}.case-result{grid-template-columns:1fr;padding:11px 13px;min-height:53px}.case-result span{text-align:left}.story-closing{padding:62px 0}.closing-grid{grid-template-columns:1fr;gap:24px}.closing-grid h2{font-size:28px}.closing-actions{grid-column:auto;flex-direction:row}.closing-actions a{min-width:0;flex:1}.story-footer>.story-shell{flex-direction:column;gap:7px}}

/* Image-forward case cards: preserve the outer card footprint while doubling the field photo. */
@media (min-width:721px){
  .story-card{height:409px;padding:20px 24px}
  .card-index{right:22px;top:18px}
  .card-heading,.station-1 .card-heading,.station-2 .card-heading,.station-3 .card-heading,.station-4 .card-heading,.station-5 .card-heading,.station-6 .card-heading{min-height:49px;padding:0 92px 0 0}
  .card-heading p{margin-bottom:4px;font-size:8px}
  .card-heading h2{font-size:19px;line-height:1.28}
  .card-summary,.station-1 .card-summary,.station-3 .card-summary,.station-5 .card-summary{margin:6px 0 7px;padding:0;font-size:9px;line-height:1.55}
  .case-inside{grid-template-columns:304px minmax(0,1fr);gap:10px;height:265px;min-height:265px;margin:0;padding-top:8px}
  .case-photo{height:256px}
  .case-photo figcaption{left:8px;bottom:7px;font-size:7px}
  .case-points li{display:flex;flex-direction:column;justify-content:center;align-items:flex-start;gap:4px;padding:7px 0;font-size:8px;line-height:1.35}
  .case-points span{font-size:7px;letter-spacing:.05em}
  .case-points b{font-size:8px}
  .case-result{position:absolute;left:24px;bottom:20px;z-index:2;width:304px;min-height:51px;margin:0;padding:8px 10px;background:rgba(232,241,248,.94);grid-template-columns:1fr auto;gap:2px 8px;backdrop-filter:blur(2px)}
  .case-result small{font-size:7px}.case-result strong{font-size:12px}.case-result span{font-size:7px}
}

@media (max-width:720px){
  .story-card,.station-1,.station-2,.station-3,.station-4,.station-5,.station-6{height:393px;padding:18px 16px 16px}
  .card-index{right:14px;top:15px}
  .card-heading,.station-1 .card-heading,.station-2 .card-heading,.station-3 .card-heading,.station-4 .card-heading,.station-5 .card-heading,.station-6 .card-heading{min-height:50px;padding:0 68px 0 0}
  .card-heading p{margin-bottom:3px;font-size:7px}
  .card-heading h2{font-size:16px;line-height:1.28}
  .card-summary,.station-1 .card-summary,.station-3 .card-summary,.station-5 .card-summary{margin:5px 0 6px;padding:0;font-size:8px;line-height:1.5}
  .case-inside{grid-template-columns:236px minmax(0,1fr);gap:8px;height:233px;min-height:233px;margin:0;padding-top:8px}
  .case-photo{height:224px}
  .case-photo figcaption{left:7px;bottom:6px;font-size:7px}
  .case-points li{display:flex;flex-direction:column;justify-content:center;align-items:flex-start;gap:3px;padding:5px 0;font-size:7px;line-height:1.3}
  .case-points span{font-size:6px;letter-spacing:.04em}
  .case-points b{font-size:7px}
  .case-result{position:absolute;left:16px;bottom:16px;z-index:2;width:236px;min-height:47px;margin:0;padding:7px 9px;background:rgba(232,241,248,.94);grid-template-columns:1fr;gap:2px;backdrop-filter:blur(2px)}
  .case-result small{font-size:6px}.case-result strong{font-size:10px}.case-result span{font-size:6px;text-align:left}
}

/* Closing CTA: concise, customer-facing copy with a tighter footprint. */
.story-closing{padding:64px 0}
.closing-grid{grid-template-columns:1fr auto;gap:50px}
.closing-grid h2{font-size:26px;line-height:1.4;letter-spacing:-.025em}
@media (max-width:1000px){.closing-grid{grid-template-columns:1fr auto}.closing-actions{grid-column:auto}}
@media (max-width:720px){.story-closing{padding:44px 0}.closing-grid{grid-template-columns:1fr;gap:20px}.closing-grid h2{font-size:22px}.closing-actions{grid-column:auto}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.case-story-preview *{transition:none!important}}

/* 照片左上角的「工艺细节」页内跳转（2026-09-03，W-73）
   合并后的案例正文放在漫游路径之后的 .case-detail-section，离卡片约 3300px，
   访客在卡片区看不出下面还有内容。卡片是固定高度（桌面 409px / 手机 393px）、
   内部只剩十几像素余量，加一行会撑破；卡片右下角在窄屏会与定宽 236px 的
   .case-result 相撞；右上角栏位手机端只有 68px。照片是定高 128px 的定位容器、
   图注在左下角，左上角必然是空的，两端表现一致且不占流内高度。 */
.case-photo .case-jump{
  position:absolute;
  left:8px;
  top:8px;
  z-index:3;
  display:inline-flex;
  align-items:center;
  gap:4px;
  padding:5px 9px;
  border-radius:3px;
  background:rgba(255,255,255,.92);
  box-shadow:0 2px 8px rgba(8,47,81,.18);
  color:#0071b2;
  font-size:11px;
  font-weight:600;
  line-height:1;
  text-decoration:none;
  white-space:nowrap;
  transition:background .18s ease,color .18s ease;
}
.case-photo .case-jump:hover{background:#0071b2;color:#fff}
.case-photo .case-jump:focus-visible{outline:2px solid #0071b2;outline-offset:2px}
.case-photo .case-jump span{font-size:12px;line-height:1}

@media (max-width:720px){
  .case-photo .case-jump{left:6px;top:6px;padding:4px 8px;font-size:10px}
}

/* 跳转落点留出固定导航的高度，避免标题被顶栏盖住 */
.case-detail{scroll-margin-top:96px}