.case-hero{padding:78px 6% 64px;background:linear-gradient(135deg,#f8fcff 0%,#edf8ff 55%,#fff 100%);position:relative;overflow:hidden}.case-hero::before{content:"";position:absolute;right:7%;top:32px;width:180px;height:180px;border:1px solid rgba(0,155,219,.12);border-radius:50%;box-shadow:55px 35px 0 -1px #f4faff}.case-hero::after{content:"";position:absolute;width:720px;height:220px;right:-120px;bottom:-95px;border-radius:50%;border:1px solid rgba(0,155,219,.18);transform:rotate(-10deg)}.case-hero .inner,.case-main{max-width:1180px;margin:0 auto}.eyebrow{margin:0 0 14px;color:#009bdb;font-weight:800;letter-spacing:.14em;font-size:14px}.case-hero h1{margin:0;color:#001f63;font-size:clamp(36px,5vw,64px);line-height:1.25}.case-hero .lead{max-width:780px;margin:24px 0 0;font-size:18px;line-height:2;color:#25447e}.case-main{padding:76px 24px 100px}.intro{text-align:center;margin:0 auto 58px;max-width:850px}.intro h2{font-size:clamp(26px,3.2vw,40px);margin:0 0 18px;color:#001f63}.intro p{margin:0;color:#536b93;line-height:1.9}.intro::after{content:"";display:block;width:48px;height:2px;background:#009bdb;margin:26px auto 0}.case-list{display:grid;gap:24px}.case-card{display:grid;grid-template-columns:185px 1fr;min-height:235px;border:1px solid #dcecf8;border-radius:18px;background:#fff;box-shadow:0 10px 34px rgba(0,61,139,.06);overflow:hidden}.case-number{display:flex;flex-direction:column;justify-content:center;align-items:center;background:linear-gradient(145deg,#eef9ff,#e6f4ff);color:#009bdb;font-weight:800;letter-spacing:.12em;font-size:15px;border-right:1px solid #dcecf8}.case-number strong{display:block;font-family:Georgia,serif;font-style:italic;font-size:64px;line-height:1;color:#087bd9;letter-spacing:0;margin-top:8px}.case-body{padding:36px 42px}.industry{margin:0 0 8px;color:#009bdb;font-weight:800;font-size:14px;letter-spacing:.04em}.case-body h2{margin:0 0 15px;color:#001f63;font-size:27px}.case-body>p:not(.industry){margin:0;color:#52698e;font-size:15px;line-height:1.9;max-width:820px}.case-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}.case-tags span{padding:7px 13px;border-radius:20px;background:#f0f8fd;color:#246a9b;font-size:11pt;font-weight:700}.case-note{margin-top:64px;padding:48px 54px;border-radius:18px;background:linear-gradient(120deg,#f2faff,#f8fbff);border-left:5px solid #009bdb}.note-label{margin:0 0 12px;color:#009bdb;font-weight:800;letter-spacing:.12em;font-size:11pt}.case-note h2{margin:0 0 18px;color:#001f63;font-size:29px}.case-note>p:last-child{margin:0;color:#536b93;line-height:1.9}.cta{margin-top:64px;padding:50px 28px;text-align:center;border-radius:18px;background:linear-gradient(120deg,#eff9ff,#f8fbff)}.cta h2{font-size:30px;margin:0 0 12px;color:#001f63}.cta p{color:#536b93;line-height:1.8;margin:0 0 24px}.cta a{display:inline-flex;min-width:280px;height:58px;align-items:center;justify-content:center;border-radius:30px;background:linear-gradient(90deg,#06a9ef,#0645d8);color:#fff;text-decoration:none;font-weight:800}.site-footer{text-align:center;padding:30px;color:#6f82a3;font-size:11pt;border-top:1px solid #edf3f8}@media(max-width:760px){.case-hero{padding:54px 22px 46px}.case-hero .lead{font-size:15px;line-height:1.8}.case-main{padding:50px 18px 70px}.case-card{grid-template-columns:1fr}.case-number{min-height:105px;flex-direction:row;gap:10px;border-right:0;border-bottom:1px solid #dcecf8}.case-number strong{font-size:44px;margin-top:0}.case-body{padding:28px 25px}.case-body h2{font-size:22px}.case-note{margin-top:46px;padding:34px 25px}.case-note h2{font-size:23px}.cta{margin-top:46px;padding:38px 20px}.cta h2{font-size:23px}.cta a{min-width:0;width:100%}}

/* CASE STUDY readability refinements */
.case-number strong{font-family:Arial,Helvetica,sans-serif!important;font-style:normal!important;font-weight:800!important;font-variant-numeric:tabular-nums!important;font-feature-settings:"tnum" 1;letter-spacing:0!important}
.industry{font-size:28px!important;line-height:1.45!important;letter-spacing:.02em!important;color:#001f63!important}
.case-body>p:not(.industry){font-size:18px!important;line-height:1.9!important}
@media(max-width:760px){.industry{font-size:24px!important}.case-body>p:not(.industry){font-size:16px!important}}


/* CASE STUDY v3: TOPと同じ画像を使用 */
.case-card{grid-template-columns:185px 300px 1fr;align-items:stretch}
.case-photo{min-height:235px;overflow:hidden;background:#eef7fc}
.case-photo img{display:block;width:100%;height:100%;object-fit:cover}
.case-note{background:#fff;border:1px solid #dcecf8;border-left:5px solid #009bdb;box-shadow:0 10px 30px rgba(0,61,139,.05)}
.case-note>p:last-child{color:#334f7c!important;font-weight:500}
.cta{background:#eaf7ff;border:1px solid #d4eaf8;box-shadow:0 10px 30px rgba(0,61,139,.05)}
.cta p{color:#334f7c!important;font-weight:600}
@media(max-width:980px){.case-card{grid-template-columns:150px 240px 1fr}.case-body{padding:30px 28px}}
@media(max-width:760px){.case-card{grid-template-columns:1fr}.case-photo{min-height:0;aspect-ratio:16/6}.case-number{min-height:105px}.case-body{padding:28px 25px}}

.case-card-link{position:relative}.case-card-overlay{position:absolute;inset:0;z-index:8;border-radius:inherit}.case-card-link:hover{transform:translateY(-2px);transition:transform .2s ease}.case-card-link:hover .case-body h2{color:#078fe8}