:root{
 --navy:#102a43;--navy2:#173f5f;--blue:#1769aa;--blue2:#2f80c7;
 --sky:#eef7ff;--sky2:#f7fbff;--text:#25313c;--sub:#627181;
 --line:#dfe7ee;--green:#2f8f75;--orange:#e58b2a;--purple:#7258b8;
 --shadow:0 12px 34px rgba(22,55,82,.09)
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
 margin:0;color:var(--text);background:#fff;line-height:1.85;
 font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP","Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif
}
a{color:var(--blue)}
.wrap{width:min(1080px,calc(100% - 34px));margin:auto}
.breadcrumb{padding:17px 0;color:#7c8995;font-size:.86rem}
.breadcrumb a{color:#687785;text-decoration:none}

/* hero */
.hero{
 position:relative;overflow:hidden;color:#fff;
 background:
 radial-gradient(circle at 84% 16%,rgba(94,204,168,.18),transparent 26%),
 radial-gradient(circle at 67% 88%,rgba(255,200,104,.17),transparent 30%),
 linear-gradient(135deg,#102a43 0%,#174f78 58%,#1769aa 100%)
}
.hero-inner{width:min(1080px,calc(100% - 34px));margin:auto;padding:78px 0 74px;display:grid;grid-template-columns:1.15fr .85fr;gap:54px;align-items:center}
.hero-kicker{margin:0 0 12px;color:#abd9f3;font-size:.8rem;font-weight:800;letter-spacing:.15em}
.hero h1{margin:0 0 18px;font-size:clamp(2.35rem,5vw,3.9rem);line-height:1.18}
.hero h1 span{display:block;margin-top:9px;color:#d9effb;font-size:.42em;font-weight:650}
.hero .lead{margin:0;color:#eaf5fb;font-size:1.08rem}
.hero-panel{padding:25px;border:1px solid rgba(255,255,255,.22);border-radius:20px;background:rgba(255,255,255,.10);box-shadow:0 24px 60px rgba(0,0,0,.15);backdrop-filter:blur(8px)}
.hero-panel h2{margin:0 0 16px;font-size:1.12rem}
.hero-tags{display:flex;flex-wrap:wrap;gap:9px}
.hero-tag{padding:8px 11px;border-radius:999px;background:rgba(255,255,255,.12);font-size:.82rem;color:#eef8fd}

/* common */
.section{padding:72px 0}
.section.soft{background:var(--sky2)}
.section.blue{background:linear-gradient(180deg,#f1f8fe,#fff)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;margin-bottom:11px;color:var(--blue);font-size:.78rem;font-weight:800;letter-spacing:.14em}
.eyebrow:before{content:"";width:28px;height:2px;background:var(--blue2)}
.section-title{margin:0 0 18px;color:var(--navy);font-size:clamp(1.65rem,3vw,2.25rem);line-height:1.45}
.section-lead{max-width:860px;margin:0 0 34px;color:#586979;font-size:1.02rem}
p{margin:0 0 1.2em}

/* category */
.category-block{margin-bottom:54px}
.category-block:last-child{margin-bottom:0}
.category-head{display:flex;align-items:center;gap:14px;margin-bottom:22px}
.category-icon{width:48px;height:48px;display:grid;place-items:center;border-radius:13px;background:#eaf5fd;font-size:1.4rem}
.category-head h2{margin:0;color:var(--navy);font-size:1.45rem}
.category-head p{margin:2px 0 0;color:#7b8996;font-size:.84rem}
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.case{
 display:flex;flex-direction:column;min-height:100%;
 padding:25px;border:1px solid var(--line);border-radius:16px;background:#fff;
 box-shadow:0 7px 22px rgba(22,55,82,.05)
}
.case .case-label{display:inline-block;align-self:flex-start;margin-bottom:10px;padding:3px 8px;border-radius:999px;background:#edf6fc;color:var(--blue);font-size:.72rem;font-weight:800}
.case h3{margin:0 0 9px;color:var(--navy);font-size:1.07rem;line-height:1.5}
.case p{margin:0 0 18px;color:#61717f;font-size:.9rem}
.case a{margin-top:auto;text-decoration:none;font-weight:750;font-size:.88rem}
.case a:after{content:" →"}

/* overview */
.overview{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:28px}
.overview-card{padding:22px 18px;border-radius:15px;background:#fff;border:1px solid var(--line);text-align:center}
.overview-card strong{display:block;color:var(--navy);font-size:1.05rem}
.overview-card span{display:block;margin-top:4px;color:#728290;font-size:.82rem}
.statement{padding:40px;border-radius:20px;color:#fff;background:linear-gradient(135deg,var(--navy),var(--navy2));box-shadow:var(--shadow)}
.statement h2{margin:0 0 14px;font-size:clamp(1.6rem,3vw,2.15rem)}
.statement p{color:#dcebf4}
.note{margin-top:30px;padding:24px 27px;border-radius:14px;background:#eef7ff;border:1px solid #d8ebf8;color:#536676}
.note strong{color:var(--navy)}


/* featured cases */
.featured-cases{border-top:1px solid #e5eef5;border-bottom:1px solid #e5eef5}
.featured-case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.featured-case{display:flex;flex-direction:column;padding:28px;border:1px solid var(--line);border-radius:18px;background:#fff;box-shadow:var(--shadow)}
.featured-case-head{display:flex;gap:14px;align-items:flex-start;margin-bottom:17px}
.featured-case-no{flex:0 0 42px;height:42px;display:grid;place-items:center;border-radius:12px;background:var(--navy);color:#fff;font-size:.82rem;font-weight:850;letter-spacing:.05em}
.featured-case-type{display:block;margin:0 0 4px;color:var(--blue);font-size:.72rem;font-weight:850;letter-spacing:.08em}
.featured-case h3{margin:0;color:var(--navy);font-size:1.12rem;line-height:1.45}
.featured-case-summary{margin:0 0 19px;color:#566978;font-size:.92rem}
.featured-case-detail{margin:0 0 21px}
.featured-case-detail div{padding:11px 0;border-top:1px solid #e7edf2}
.featured-case-detail div:last-child{border-bottom:1px solid #e7edf2}
.featured-case-detail dt{margin:0 0 3px;color:var(--navy);font-size:.8rem;font-weight:850}
.featured-case-detail dd{margin:0;color:#627382;font-size:.86rem;line-height:1.65}
.featured-case-link{margin-top:auto;display:inline-flex;align-items:center;gap:5px;text-decoration:none;font-size:.9rem;font-weight:800}
.featured-case-link:after{content:" →"}
.featured-case-note{max-width:900px;margin:28px auto 0;padding:18px 22px;border-left:4px solid var(--blue2);background:#fff;color:#536676;border-radius:0 10px 10px 0}

/* CTA */
.contact-cta{padding:70px 0;color:#fff;text-align:center;background:linear-gradient(135deg,#0f263a 0%,#153d5b 60%,#1769aa 120%)}
.contact-inner{width:min(900px,calc(100% - 34px));margin:auto}
.contact-label{margin:0 0 8px;color:#9fd8f5;font-size:.78rem;font-weight:800;letter-spacing:.14em}
.contact-cta h2{margin:0 0 15px;font-size:clamp(1.8rem,4vw,2.55rem)}
.contact-cta p{color:#d9e9f2}
.button-row{margin-top:26px;display:flex;justify-content:center;flex-wrap:wrap;gap:12px}
.btn{display:inline-block;padding:12px 24px;border-radius:9px;text-decoration:none;font-weight:800}
.btn-primary{color:var(--navy);background:#fff}
.btn-secondary{color:#fff;border:1px solid rgba(255,255,255,.42);background:rgba(255,255,255,.07)}

@media(max-width:920px){
 .hero-inner{grid-template-columns:1fr}
 .featured-case-grid{grid-template-columns:1fr}
 .case-grid{grid-template-columns:repeat(2,1fr)}
 .overview{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:700px){
 .hero-inner{padding:50px 0 54px}.section{padding:52px 0}
 .case-grid,.overview{grid-template-columns:1fr}
 .statement{padding:29px 23px}
}