:root{--navy:#0c2f48;--navy2:#0a2234;--blue:#1f6fa5;--sky:#eaf5fb;--ink:#14212b;--muted:#60717f;--line:#dce5ea;--soft:#f6f8fa;--white:#fff}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP","Hiragino Kaku Gothic ProN",Meiryo,sans-serif;color:var(--ink);background:#fff;line-height:1.85;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}.container{width:min(1180px,calc(100% - 48px));margin:auto}
.header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.94);backdrop-filter:blur(16px);border-bottom:1px solid rgba(220,229,234,.9)}.nav{height:82px;display:flex;align-items:center;justify-content:space-between;gap:34px}.brand img{display:block;width:310px;max-width:42vw;height:auto}nav{display:flex;align-items:center;gap:28px;font-size:13px;font-weight:600;color:#3d505e}nav a{transition:.2s}nav a:hover{color:var(--blue)}.nav-cta{padding:10px 17px;border-radius:999px;background:var(--navy);color:#fff}
.hero{position:relative;overflow:hidden;padding:128px 0 112px;background:linear-gradient(135deg,#fff 0%,#f6fbfe 52%,#e9f3f9 100%)}.hero:before{content:"";position:absolute;width:680px;height:680px;border-radius:50%;right:-220px;top:-280px;background:radial-gradient(circle,rgba(74,151,202,.17),rgba(74,151,202,0) 70%)}.hero-sky{position:absolute;inset:auto 0 0;height:180px;background:linear-gradient(to top,rgba(31,111,165,.08),transparent);clip-path:polygon(0 78%,10% 66%,19% 72%,30% 52%,40% 70%,52% 48%,62% 66%,73% 44%,83% 58%,91% 40%,100% 52%,100% 100%,0 100%)}.hero-grid{position:relative;display:grid;grid-template-columns:minmax(0,1.6fr) 380px;gap:90px;align-items:center}.eyebrow,.section-label{letter-spacing:.22em;font-size:11px;font-weight:800;color:#66879e}.hero h1{font-family:"Yu Mincho","Hiragino Mincho ProN","Noto Serif JP",serif;font-size:clamp(48px,6vw,78px);line-height:1.34;letter-spacing:.01em;margin:18px 0 30px;color:#0b2b42}.lead{font-size:18px;color:#4a5d6b;line-height:2}.actions{display:flex;gap:14px;margin-top:42px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;gap:18px;min-height:54px;padding:0 26px;border-radius:999px;font-weight:700;font-size:14px;transition:.2s}.primary{background:var(--navy);color:#fff;box-shadow:0 10px 28px rgba(12,47,72,.16)}.primary:hover{transform:translateY(-1px);background:#123d5b}.ghost{border:1px solid #b8c6cf;background:rgba(255,255,255,.7)}.proof-card{position:relative;background:rgba(255,255,255,.82);border:1px solid rgba(190,209,221,.9);border-radius:24px;padding:34px 34px 30px;box-shadow:0 24px 70px rgba(27,78,111,.12);backdrop-filter:blur(12px)}.proof-card:before{content:"";position:absolute;left:0;top:34px;bottom:34px;width:3px;background:linear-gradient(var(--blue),transparent)}.proof-kicker{font-size:10px;letter-spacing:.18em;color:#7691a2;font-weight:800}.proof-number{font-size:74px;line-height:1;font-weight:800;color:var(--navy);margin:14px 0 8px}.proof-number span{font-size:24px;margin-left:4px}.proof-title{font-weight:700;margin-bottom:22px}.proof-card ul{list-style:none;padding:0;margin:0;color:#60717f;font-size:14px}.proof-card li{padding:9px 0;border-top:1px solid #e4ebef}
.section{padding:108px 0}.intro-grid{display:grid;grid-template-columns:.8fr 1.25fr;gap:110px}.intro-heading h2,.section h2{font-family:"Yu Mincho","Hiragino Mincho ProN","Noto Serif JP",serif;font-size:clamp(34px,4vw,52px);line-height:1.45;margin:10px 0 0;color:#102f45}.body-copy{color:#435564}.body-copy .large{font-size:20px;line-height:2;margin-top:0;color:#263946}.body-copy p{margin:0 0 24px}.fact-note{margin-top:34px;border-left:3px solid var(--blue);background:#f3f8fb;padding:18px 20px;display:flex;gap:16px;align-items:flex-start;font-size:12px}.fact-note strong{white-space:nowrap;letter-spacing:.12em;color:#2f6f99}
.services{background:var(--soft)}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:40px;margin-bottom:42px}.section-head>p{color:#687986;text-align:right}.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.card{position:relative;background:#fff;border:1px solid #e1e8ed;border-radius:18px;padding:34px 34px 32px;min-height:270px;box-shadow:0 12px 28px rgba(16,58,84,.04);overflow:hidden}.card:after{content:"";position:absolute;width:170px;height:170px;border-radius:50%;right:-70px;bottom:-75px;background:#eef6fa}.num{font-family:Georgia,serif;font-size:30px;color:#7da5be}.card h3{font-size:23px;margin:14px 0 16px;color:#17364a}.card p{color:#5d6e7a;margin:0 0 24px}.tag{position:absolute;left:34px;bottom:25px;font-size:10px;letter-spacing:.18em;color:#68869a;font-weight:800}
.principle{background:linear-gradient(135deg,var(--navy2),#123d58);color:#fff;position:relative;overflow:hidden}.principle:after{content:"";position:absolute;width:520px;height:520px;border-radius:50%;right:-180px;top:-200px;border:1px solid rgba(255,255,255,.08);box-shadow:0 0 0 70px rgba(255,255,255,.02),0 0 0 140px rgba(255,255,255,.015)}.principle-grid{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:100px}.principle h2{color:#fff}.section-label.light{color:#9fc6df}.principle-copy{font-size:18px;color:#d4e0e8;padding-top:44px}.principle-copy p:first-child{font-size:24px;color:#fff;font-weight:700}
.profile-grid{display:grid;grid-template-columns:.55fr 1.45fr;gap:100px}.signature-mark{margin-top:45px;width:92px;opacity:.9}.signature-mark img{width:100%}.role{font-size:12px;letter-spacing:.18em;color:#7892a3;font-weight:700;margin:0}.profile-name{font-family:"Yu Mincho","Hiragino Mincho ProN",serif;font-size:34px;font-weight:700;margin:6px 0 24px}.profile-lead{font-size:18px;color:#4d5f6c;max-width:760px}.timeline{margin-top:38px;border-top:1px solid var(--line)}.timeline div{display:grid;grid-template-columns:120px 1fr;gap:24px;padding:23px 0;border-bottom:1px solid var(--line)}.timeline b{color:#1f628e;letter-spacing:.06em}.timeline p{margin:0;color:#536572}
.company{background:#fbfcfd}.company-grid{display:grid;grid-template-columns:.65fr 1.35fr;gap:100px}.company-sub{color:#6a7b86}.company-table{margin:0;border-top:1px solid var(--line)}.company-table div{display:grid;grid-template-columns:210px 1fr;gap:24px;border-bottom:1px solid var(--line);padding:22px 0}.company-table dt{font-weight:700;color:#314757}.company-table dd{margin:0;color:#536572}.company-table small{display:block;color:#8b9aa4;margin-top:5px}
.contact{padding:84px 0;background:linear-gradient(135deg,#0b304a,#154c6c);color:#fff}.contact-inner{display:flex;align-items:center;justify-content:space-between;gap:50px}.contact h2{color:#fff;margin:8px 0 8px;font-size:38px}.contact p{margin:0;color:#c8dae5}.white{background:#fff;color:#12354d;box-shadow:0 12px 30px rgba(0,0,0,.12)}
.footer{padding:32px 0;background:#081923;border-top:1px solid rgba(255,255,255,.05)}.footer-row{display:flex;align-items:center;justify-content:space-between;gap:30px}.footer-brand img{width:280px;filter:brightness(0) invert(1);opacity:.9}.footer-meta{display:flex;gap:26px;color:#91a8b7;font-size:12px}
@media(max-width:900px){nav a:not(.nav-cta){display:none}.brand img{width:255px;max-width:66vw}.hero{padding:96px 0 80px}.hero-grid,.intro-grid,.principle-grid,.profile-grid,.company-grid{grid-template-columns:1fr;gap:52px}.proof-card{max-width:500px}.section{padding:78px 0}.section-head{align-items:flex-start;flex-direction:column}.section-head>p{text-align:left}.cards{grid-template-columns:1fr}.contact-inner{align-items:flex-start;flex-direction:column}.company-table div{grid-template-columns:1fr;gap:6px}}
@media(max-width:560px){.container{width:min(100% - 30px,1180px)}.nav{height:72px}.brand img{width:210px}.nav-cta{padding:9px 14px;font-size:12px}.hero h1{font-size:41px}.lead{font-size:16px}.proof-card{padding:28px 26px}.proof-number{font-size:60px}.section h2{font-size:34px}.cards{gap:12px}.card{padding:28px 26px}.tag{left:26px}.timeline div{grid-template-columns:86px 1fr}.footer-row{align-items:flex-start;flex-direction:column}.footer-brand img{width:230px}.footer-meta{flex-direction:column;gap:8px}}