:root{color-scheme:dark;--navy:#071b36;--navy2:#0b2446;--ink:#eaf2fc;--muted:#b4c4d8;--line:#35516d;--cyan:#72e6d8;--blue:#84b8ff;--paper:#f3f6fb;--p-ink:#132b48}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:"Noto Sans JP","Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif;background:var(--navy);color:var(--ink);line-height:1.75}a{color:inherit}a:focus-visible{outline:3px solid var(--cyan);outline-offset:5px}button{font:inherit} .wrap{width:min(1160px,calc(100% - 48px));margin:auto}
.site-header{border-bottom:1px solid #315070;background:#071b36e8;position:sticky;top:0;z-index:10;backdrop-filter:blur(14px)}.head-inner{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{text-decoration:none;display:flex;align-items:center;gap:16px;line-height:1.2}.brand-mark{font-family:Arial,sans-serif;font-weight:900;font-size:26px;letter-spacing:-.09em}.brand-mark::after{content:"";display:inline-block;background:var(--cyan);height:7px;width:7px;border-radius:50%;margin-left:4px}.brand-sub{border-left:1px solid #66809e;padding-left:15px;font-size:12px;letter-spacing:.1em;color:#c9dcf4;font-weight:700}.nav{display:flex;align-items:center;gap:26px;font-size:13px;font-weight:700;letter-spacing:.05em}.nav a{text-decoration:none}.nav a:hover{color:var(--cyan)}.nav .nav-contact{border:1px solid #94c9d8;padding:10px 16px;border-radius:2px}.menu-btn{display:none;background:none;border:1px solid var(--line);color:var(--ink);padding:7px 11px;border-radius:3px}
.hero{position:relative;overflow:hidden;background:radial-gradient(ellipse at 77% 54%,#133c64 0,transparent 44%),linear-gradient(145deg,#071b36,#0a2548 75%)}.hero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(#ffffff09 1px,transparent 1px),linear-gradient(90deg,#ffffff09 1px,transparent 1px);background-size:70px 70px;mask-image:linear-gradient(90deg,transparent,#000);pointer-events:none}.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.03fr .97fr;align-items:center;gap:55px;min-height:620px;padding:90px 0 104px}.eyebrow{font-size:13px;letter-spacing:.23em;color:var(--cyan);font-weight:800;text-transform:uppercase}.hero h1{font-size:clamp(42px,5vw,72px);letter-spacing:-.035em;line-height:1.17;margin:28px 0 28px}.hero h1 span{color:var(--cyan)}.lead{font-size:18px;line-height:1.95;color:#d4e3f3;max-width:600px}.hero-actions{display:flex;flex-wrap:wrap;gap:13px;margin-top:34px}.btn{display:inline-flex;align-items:center;gap:20px;justify-content:space-between;text-decoration:none;min-height:54px;padding:12px 21px;font-weight:700;font-size:14px;border:1px solid var(--cyan);border-radius:2px;transition:.2s}.btn-primary{background:var(--cyan);color:#09253c}.btn:hover{transform:translateY(-2px);box-shadow:0 12px 26px #0004}.btn span:last-child{font-size:20px;line-height:1}
.system{border:1px solid #4c7191;background:#0d2c4aba;box-shadow:0 28px 70px #0004;position:relative;padding:26px;min-height:400px}.system:before{content:"RESEARCH / IMPLEMENTATION";display:block;font-size:11px;letter-spacing:.18em;color:#8fb7d4;border-bottom:1px solid #4a6881;padding-bottom:17px}.system-graphic{display:block;width:100%;height:auto;margin:25px auto 10px}.system-foot{display:flex;justify-content:space-between;border-top:1px solid #4a6881;padding-top:14px;color:#9db8d1;font:11px Arial,sans-serif;letter-spacing:.14em}
section{scroll-margin-top:76px}.section{padding:105px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:40px;margin-bottom:46px}.kicker{font-size:12px;letter-spacing:.22em;text-transform:uppercase;font-weight:800;color:#267e9b;margin:0 0 16px}.dark .kicker{color:var(--cyan)}h2{font-size:clamp(30px,3.4vw,46px);line-height:1.35;letter-spacing:-.035em;margin:0}.section-desc{max-width:465px;margin:0;line-height:1.9;color:#48617b}.light{background:var(--paper);color:var(--p-ink)}.light .section-desc{color:#49627b}.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:75px;align-items:start}.intro-grid p{font-size:17px;line-height:2.1;margin:0}.intro-side{border-left:2px solid #1a9cae;padding-left:30px;color:#47627c}.intro-side strong{display:block;color:#123b5a;margin-bottom:12px}.intro-side p{font-size:16px}
.research-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:#365473;border:1px solid #365473}.research-card{background:#0b2748;padding:34px 36px;min-height:242px}.research-no{font:700 12px Arial,sans-serif;color:var(--cyan);letter-spacing:.13em}.research-card h3{font-size:23px;margin:25px 0 10px;line-height:1.45}.research-card p{margin:0;color:#b7cce1;font-size:15px;line-height:1.9}.research-card .en{color:#75a8cc;font-size:12px;letter-spacing:.13em;text-transform:uppercase;margin-top:20px}
.output{background:#eaf0f8;color:var(--p-ink)}.feature{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:stretch;border-top:1px solid #afc2d5;padding:46px 0}.feature:last-child{border-bottom:1px solid #afc2d5}.feature-meta{color:#34748e;font:700 12px Arial,sans-serif;letter-spacing:.15em;margin-bottom:18px}.feature h3{font-size:clamp(24px,2.5vw,34px);line-height:1.45;margin:0 0 17px}.feature p{color:#415b75;font-size:16px;line-height:2;margin:0 0 20px}.feature ul{padding:0;list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:12px 0 0}.feature li{border-left:2px solid #338caf;padding-left:12px;font-size:14px;line-height:1.55}.feature-panel{background:#0c294d;color:#e9f2fc;min-height:315px;padding:32px;display:flex;flex-direction:column;justify-content:space-between}.feature-panel.logo-panel{position:relative;overflow:hidden;background:#fff;padding:0;min-height:315px}.logo-panel img{position:absolute;display:block;width:112%;max-width:none;height:auto;left:50%;top:50%;transform:translate(-50%,-50%)}.panel-label{font:700 12px Arial,sans-serif;letter-spacing:.18em;color:var(--cyan)}.panel-big{font:700 clamp(52px,6vw,88px) Arial,sans-serif;letter-spacing:-.08em;line-height:1}.panel-big small{display:block;font-size:15px;letter-spacing:.05em;margin-top:16px;color:#b3cde4}.panel-bottom{border-top:1px solid #4f718b;padding-top:16px;font-size:14px;color:#b3cde4}.text-link{font-weight:800;color:#0c5875;text-decoration-thickness:1px;text-underline-offset:5px}.text-link:hover{color:#097e9e}
.approach{background:#f7f9fc;color:var(--p-ink)}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;counter-reset:step}.step{border-top:3px solid #163f63;padding:25px 14px 0 0}.step span{font:800 13px Arial,sans-serif;color:#21879d}.step h3{font-size:22px;margin:20px 0 10px}.step p{color:#4b637a;line-height:1.85;margin:0;font-size:15px}
.contact{background:linear-gradient(120deg,#09274b,#0b3c5d);padding:82px 0}.contact-inner{display:flex;justify-content:space-between;align-items:center;gap:35px}.contact p{max-width:680px;color:#c4d9eb;font-size:16px}.foot{background:#06182e;border-top:1px solid #36516c;padding:28px 0;color:#99aec4}.foot-inner{display:flex;justify-content:space-between;gap:20px;align-items:center;font-size:13px}.foot-links{display:flex;gap:22px;flex-wrap:wrap}.foot a:hover{color:var(--cyan)}
@media(max-width:850px){.hero-inner{grid-template-columns:1fr;gap:44px;padding:72px 0}.system{max-width:620px}.nav{gap:15px}.nav a:not(.nav-contact){display:none}.intro-grid,.feature{grid-template-columns:1fr;gap:35px}.section-head{display:block}.section-desc{margin-top:20px}.contact-inner{display:block}.contact .btn{margin-top:20px}}
@media(max-width:600px){.wrap{width:min(100% - 34px,1160px)}.head-inner{min-height:66px}.brand-mark{font-size:23px}.brand-sub{font-size:10px;padding-left:10px}.nav .nav-contact{font-size:12px;padding:7px 9px}.hero-inner{padding:60px 0 72px;min-height:0}.hero h1{font-size:clamp(38px,10vw,56px)}.lead{font-size:16px}.system{padding:17px;min-height:0}.system-graphic{margin:10px 0}.section{padding:72px 0}.research-grid{grid-template-columns:1fr}.research-card{min-height:0;padding:27px}.feature{padding:32px 0}.feature ul{grid-template-columns:1fr}.feature-panel{min-height:250px}.steps{grid-template-columns:1fr;gap:32px}.foot-inner{display:block}.foot-links{margin-top:16px}.intro-grid p{font-size:16px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.btn{transition:none}}