:root{
  --ink:#0f3a5f;
  --blue:#2b6fb4;
  --green:#2e8f68;
  --neutral:#eef1f5;
  --tag:#6b7683;
  --bg:#ffffff;
  --line:#d9dee6;
  --soft:#f5f7fa;
  --dark:#11243a;
  --text:#1a2738;
  --muted:#54616f;
  --warn:#b9582a;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{background:var(--bg);color:var(--text);font-family:"Noto Sans JP",system-ui,sans-serif;font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block;height:auto}
.mono,.metric-num,.tag-id,code,kbd,.num{font-family:"JetBrains Mono",ui-monospace,Menlo,Consolas,monospace;font-feature-settings:"tnum"}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.narrow{max-width:860px;margin:0 auto;padding:0 24px}
h1,h2,h3,h4{font-weight:700;color:var(--ink);line-height:1.35}
h1{font-size:34px;letter-spacing:-.01em}
h2{font-size:26px;margin-top:40px;margin-bottom:16px}
h3{font-size:20px;margin-top:28px;margin-bottom:10px}
p{margin:12px 0}
ul,ol{margin:12px 0 12px 22px}
hr{border:0;border-top:1px solid var(--line);margin:28px 0}

.topbar{background:#0b2438;color:#cfd8e3;font-size:13px;padding:6px 0}
.topbar .inner{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}
.topbar a{color:#cfd8e3}
.topbar .status-dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--green);margin-right:6px;vertical-align:middle}

header.site{position:sticky;top:0;z-index:40;background:#ffffffee;backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
header.site .bar{display:flex;align-items:center;gap:22px;padding:14px 0}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--ink);font-size:18px}
.brand .mark{width:34px;height:34px;border-radius:8px;background:linear-gradient(135deg,var(--ink),var(--green));display:grid;place-items:center;color:#fff;font-family:"JetBrains Mono",monospace;font-weight:700;font-size:14px}
nav.main{margin-left:10px;display:flex;align-items:center;gap:0}
nav.main ul{list-style:none;margin:0;padding:0;display:flex;align-items:center;gap:0}
nav.main li{position:relative;padding:0 14px;border-right:1px dashed var(--line)}
nav.main li:last-child{border-right:0}
nav.main a{color:var(--dark);font-weight:600;font-size:15px}
nav.main .dd-toggle{background:none;border:0;cursor:pointer;color:var(--dark);font-weight:600;font-size:15px;font-family:inherit;display:inline-flex;align-items:center;gap:6px}
.dropdown{position:absolute;top:calc(100% + 14px);left:0;min-width:340px;background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:0 12px 28px rgba(17,36,58,.12);padding:10px;display:none;z-index:50}
.dropdown.open{display:block}
.dropdown a{display:block;padding:10px 12px;border-radius:6px;font-weight:500;color:var(--dark);font-size:14px;line-height:1.5}
.dropdown a:hover{background:var(--neutral);text-decoration:none}
.cta-chip{margin-left:auto;display:inline-flex;align-items:center;gap:8px;background:var(--ink);color:#fff;padding:10px 18px;border-radius:999px;font-size:14px;font-weight:600}
.cta-chip:hover{background:var(--blue);text-decoration:none;color:#fff}
.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:6px;padding:6px 10px;cursor:pointer;margin-left:auto}

.hero{position:relative;background:linear-gradient(135deg,#0f3a5f 0%,#11243a 100%);color:#e6eef7;overflow:hidden}
.hero .bgimg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.22}
.hero .overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,58,95,.55),rgba(17,36,58,.85))}
.hero .wrap{position:relative;padding:70px 0 30px}
.hero h1{color:#fff;font-size:42px;max-width:820px}
.hero .sub{color:#b8c9dc;font-size:17px;margin-top:14px;max-width:760px}
.hero .ctarow{margin-top:28px;display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:10px;padding:13px 22px;border-radius:8px;font-weight:700;font-size:15px;border:1px solid transparent;cursor:pointer;font-family:inherit}
.btn-primary{background:var(--green);color:#fff}
.btn-primary:hover{background:#256f51;text-decoration:none;color:#fff}
.btn-secondary{background:transparent;color:#fff;border-color:#ffffff55}
.btn-secondary:hover{border-color:#fff;text-decoration:none;color:#fff}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{background:var(--neutral);text-decoration:none;color:var(--ink)}

.metric-strip{position:relative;margin-top:36px;background:#ffffff14;border:1px solid #ffffff22;border-radius:12px;padding:18px 18px 14px;backdrop-filter:blur(4px)}
.metric-strip .strip-head{display:flex;justify-content:space-between;align-items:center;color:#b8c9dc;font-size:12px;text-transform:uppercase;letter-spacing:.12em;margin-bottom:10px}
.metric-strip .strip-head span.kind{padding:2px 8px;border:1px solid #ffffff33;border-radius:999px;font-size:11px}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.metric{background:#0b24384a;border:1px solid #ffffff22;border-radius:10px;padding:14px}
.metric .lab{color:#8fb0cf;font-size:12px;letter-spacing:.04em}
.metric .val{color:#fff;font-size:28px;font-weight:700;margin-top:4px}
.metric .delta{color:#69d3a8;font-size:12px;margin-top:2px}
.metric-note{margin-top:12px;color:#8fb0cf;font-size:12px;line-height:1.6}

section{padding:64px 0}
section.tight{padding:48px 0}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:28px;flex-wrap:wrap}
.section-head .eyebrow{color:var(--green);font-family:"JetBrains Mono",monospace;font-size:12px;letter-spacing:.18em;text-transform:uppercase;margin-bottom:6px}
.section-head h2{margin:0}
.section-head p.lead{color:var(--muted);max-width:620px;margin-top:6px}

.adv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.adv-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px;position:relative;transition:border-color .2s,transform .2s}
.adv-card:hover{border-color:var(--blue);transform:translateY(-2px)}
.adv-card .tag-id{display:inline-block;background:var(--neutral);color:var(--tag);font-size:11px;padding:3px 8px;border-radius:4px;letter-spacing:.08em}
.adv-card .icn{width:44px;height:44px;border-radius:10px;background:var(--neutral);color:var(--ink);display:grid;place-items:center;font-size:22px;margin:12px 0 10px}
.adv-card h3{color:var(--ink);font-size:17px;margin:6px 0 8px}
.adv-card p{color:var(--muted);font-size:14px;line-height:1.65;margin:0}
.adv-card .status{position:absolute;top:16px;right:16px;display:inline-flex;align-items:center;gap:6px;font-size:11px;color:var(--green);background:#e8f5ee;border-radius:999px;padding:4px 8px}
.adv-card .status .dot{width:6px;height:6px;background:var(--green);border-radius:50%}

.art-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.art-card{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .2s,transform .2s}
.art-card:hover{box-shadow:0 12px 30px rgba(17,36,58,.1);transform:translateY(-2px)}
.art-card .thumb{aspect-ratio:16/10;background:var(--neutral);overflow:hidden;position:relative}
.art-card .thumb img{width:100%;height:100%;object-fit:cover}
.art-card .thumb .label{position:absolute;top:12px;left:12px;background:#ffffffd8;color:var(--ink);font-size:11px;padding:4px 9px;border-radius:4px;font-weight:700;letter-spacing:.06em;text-transform:uppercase}
.art-card .body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.art-card .meta{color:var(--tag);font-size:12px;font-family:"JetBrains Mono",monospace;margin-bottom:6px}
.art-card h3{font-size:17px;color:var(--ink);margin:2px 0 8px;line-height:1.45}
.art-card h3 a{color:var(--ink)}
.art-card p{color:var(--muted);font-size:14px;margin:0 0 14px;flex:1}
.art-card .more{font-size:13px;color:var(--blue);font-weight:700;align-self:flex-start}

.about{background:var(--soft)}
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center}
.about-grid img{border-radius:12px;border:1px solid var(--line)}
.about .bullets{list-style:none;margin:16px 0 0;padding:0}
.about .bullets li{padding:10px 0 10px 26px;position:relative;color:var(--dark);font-size:15px;border-top:1px solid var(--line)}
.about .bullets li:first-child{border-top:0}
.about .bullets li::before{content:"";position:absolute;left:0;top:16px;width:14px;height:2px;background:var(--green)}

.method-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:44px;align-items:center}
.method-list{list-style:none;padding:0;margin:16px 0 0}
.method-list li{background:#fff;border:1px solid var(--line);border-radius:10px;padding:18px 20px;margin-bottom:12px;display:flex;gap:16px;align-items:flex-start}
.method-list .no{font-family:"JetBrains Mono",monospace;color:var(--blue);font-weight:700}
.method-list h3{margin:0 0 4px;font-size:16px;color:var(--ink)}
.method-list p{margin:0;color:var(--muted);font-size:14px}

.mission{background:#0f3a5f;color:#dbe6f2}
.mission h2{color:#fff}
.mission .mgrid{display:grid;grid-template-columns:.9fr 1.1fr;gap:44px;align-items:center}
.mission img{border-radius:12px;border:1px solid #ffffff22}
.mission p{color:#b8c9dc}
.mission .two{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:22px}
.mission .two .box{background:#ffffff0c;border:1px solid #ffffff22;border-radius:10px;padding:18px}
.mission .two h3{color:#fff;font-size:16px;margin:0 0 6px}
.mission .two p{font-size:14px;margin:0}

.cta-close{background:linear-gradient(135deg,#eef1f5,#ffffff);border-top:1px solid var(--line)}
.cta-close .box{background:#fff;border:1px solid var(--line);border-radius:14px;padding:36px 40px;display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.cta-close h2{margin:0 0 6px}
.cta-close p{margin:0;color:var(--muted)}
.cta-close .grp{display:flex;gap:12px;flex-wrap:wrap}

footer.site{background:#0b2438;color:#b8c9dc;padding:56px 0 22px}
footer.site a{color:#b8c9dc}
footer.site a:hover{color:#fff}
.foot-grid{display:grid;grid-template-columns:1.2fr .8fr 1fr;gap:34px}
.foot-grid h4{color:#fff;font-size:14px;text-transform:uppercase;letter-spacing:.12em;margin-bottom:16px}
.foot-info p{margin:0 0 8px;font-size:14px;display:flex;gap:10px;align-items:flex-start}
.foot-info p i{color:var(--green);margin-top:3px}
.foot-grid ul{list-style:none;padding:0;margin:0}
.foot-grid ul li{padding:6px 0;font-size:14px}
.foot-brand{display:flex;gap:10px;align-items:center;margin-bottom:16px;color:#fff;font-weight:700}
.foot-brand .mark{width:30px;height:30px;border-radius:7px;background:linear-gradient(135deg,var(--blue),var(--green));display:grid;place-items:center;color:#fff;font-family:"JetBrains Mono",monospace;font-size:12px;font-weight:700}
.copy{border-top:1px solid #ffffff22;margin-top:32px;padding-top:18px;font-size:13px;color:#8fa3b8;text-align:center}

.cookie-bar{position:fixed;left:0;right:0;bottom:0;background:#0b2438f2;color:#e6eef7;border-top:2px solid var(--green);padding:16px 0;z-index:60;transform:translateY(140%);transition:transform .25s}
.cookie-bar.show{transform:translateY(0)}
.cookie-bar .row{display:flex;gap:20px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.cookie-bar p{margin:0;font-size:14px;max-width:780px;color:#cfd8e3}
.cookie-bar .grp{display:flex;gap:10px}
.cookie-bar .btn{padding:10px 20px;font-size:14px}
.cookie-bar .accept{background:var(--green);color:#fff}
.cookie-bar .reject{background:transparent;color:#fff;border:1px solid #ffffff55}

.page-hero{background:linear-gradient(135deg,#eef1f5,#ffffff);border-bottom:1px solid var(--line);padding:64px 0 44px}
.page-hero .eyebrow{color:var(--green);font-family:"JetBrains Mono",monospace;letter-spacing:.18em;font-size:12px;text-transform:uppercase;margin-bottom:8px}
.page-hero h1{margin:0 0 10px}
.page-hero p.lead{color:var(--muted);max-width:720px}

.article{padding:48px 0 56px}
.article h1{font-size:32px;margin-bottom:8px}
.article .meta{color:var(--tag);font-family:"JetBrains Mono",monospace;font-size:13px;margin:6px 0 22px}
.article .hero-img{border-radius:12px;margin:10px 0 24px;border:1px solid var(--line)}
.article p{margin:14px 0;font-size:16px;color:var(--text)}
.article h2{font-size:24px;margin-top:34px;padding-left:14px;border-left:4px solid var(--green)}
.article h3{font-size:18px;margin-top:22px}
.article ul li, .article ol li{margin:6px 0}
.prevnext{display:flex;justify-content:space-between;gap:16px;margin-top:40px;padding-top:22px;border-top:1px solid var(--line);flex-wrap:wrap}
.prevnext a{display:inline-flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 18px;max-width:48%}
.prevnext a span{font-size:11px;color:var(--tag);text-transform:uppercase;letter-spacing:.1em}
.prevnext a strong{color:var(--ink);font-size:14px;margin-top:4px}
.callout{background:var(--soft);border-left:4px solid var(--blue);padding:16px 20px;border-radius:0 8px 8px 0;margin:22px 0}
.callout p{margin:0;font-size:14px;color:var(--dark)}

.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:38px;align-items:flex-start}
.contact-info{background:#fff;border:1px solid var(--line);border-radius:12px;padding:28px}
.contact-info h3{font-size:17px;color:var(--ink);margin-bottom:14px}
.contact-info ul{list-style:none;padding:0;margin:0}
.contact-info li{display:flex;gap:14px;align-items:flex-start;padding:14px 0;border-top:1px solid var(--line)}
.contact-info li:first-child{border-top:0}
.contact-info li i{color:var(--green);font-size:20px;margin-top:2px}
.contact-info li .k{font-size:12px;color:var(--tag);text-transform:uppercase;letter-spacing:.1em}
.contact-info li .v{font-size:15px;color:var(--dark);margin-top:2px}
.form-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:28px}
.form-card h3{font-size:17px;color:var(--ink);margin-bottom:6px}
.form-card p.sub{color:var(--muted);font-size:14px;margin-bottom:18px}
.form-card label{display:block;font-size:13px;font-weight:600;color:var(--dark);margin:12px 0 6px}
.form-card input,.form-card textarea{width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:8px;font-family:inherit;font-size:15px;background:#fff;color:var(--dark)}
.form-card input:focus,.form-card textarea:focus{outline:2px solid var(--blue);outline-offset:1px;border-color:var(--blue)}
.form-card textarea{min-height:130px;resize:vertical}
.form-card .submit{margin-top:18px}
.form-err{display:none;color:var(--warn);font-size:13px;margin-top:6px}
.form-err.show{display:block}
.map-wrap{margin-top:30px;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff}
.map-wrap iframe{display:block;width:100%;height:420px;border:0}

.modal-mask{position:fixed;inset:0;background:rgba(10,22,38,.55);display:none;z-index:80;align-items:center;justify-content:center;padding:20px}
.modal-mask.show{display:flex}
.modal-card{background:#fff;border-radius:12px;max-width:460px;width:100%;padding:30px;text-align:center}
.modal-card h3{color:var(--ink);margin:0 0 8px;font-size:20px}
.modal-card p{color:var(--muted);font-size:14px;margin:0 0 20px}
.modal-card .icn{width:56px;height:56px;border-radius:50%;background:#e8f5ee;color:var(--green);display:grid;place-items:center;font-size:28px;margin:0 auto 14px}

.policy{padding:50px 0 60px}
.policy h1{margin-bottom:10px}
.policy .updated{color:var(--tag);font-size:13px;font-family:"JetBrains Mono",monospace;margin-bottom:24px}
.policy h2{font-size:22px;margin-top:34px;padding-left:14px;border-left:4px solid var(--blue)}
.policy h3{font-size:17px;margin-top:20px}
.policy ul{margin:10px 0 10px 22px}
.policy li{margin:6px 0;font-size:15px}
.policy p{font-size:15px}

.article-list{padding:48px 0 60px}
.article-list .list{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.list-card{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;display:grid;grid-template-columns:.9fr 1.1fr}
.list-card img{aspect-ratio:1/1;object-fit:cover;height:100%}
.list-card .body{padding:20px}
.list-card .meta{color:var(--tag);font-size:12px;font-family:"JetBrains Mono",monospace}
.list-card h3{font-size:17px;margin:6px 0 8px;color:var(--ink)}
.list-card h3 a{color:var(--ink)}
.list-card p{color:var(--muted);font-size:14px;margin:0 0 10px}
.list-card .tag{display:inline-block;font-size:11px;color:var(--green);background:#e8f5ee;padding:3px 8px;border-radius:4px;letter-spacing:.08em;text-transform:uppercase}

@media(max-width:980px){
  .adv-grid{grid-template-columns:repeat(2,1fr)}
  .art-grid{grid-template-columns:repeat(2,1fr)}
  .about-grid,.method-grid,.contact-grid,.mission .mgrid{grid-template-columns:1fr}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
  .article-list .list{grid-template-columns:1fr}
  .list-card{grid-template-columns:1fr}
  .list-card img{aspect-ratio:16/9}
  nav.main,.cta-chip{display:none}
  .nav-toggle{display:inline-block}
  nav.main.open{display:flex;position:absolute;top:100%;left:0;right:0;background:#fff;padding:14px 24px;border-bottom:1px solid var(--line);flex-direction:column;align-items:flex-start}
  nav.main.open ul{flex-direction:column;align-items:flex-start;width:100%}
  nav.main.open li{border-right:0;border-bottom:1px dashed var(--line);padding:10px 0;width:100%}
  .hero h1{font-size:30px}
}
@media(max-width:600px){
  .metric-grid{grid-template-columns:1fr 1fr}
  .art-grid,.adv-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  h1{font-size:26px}
  .cta-close .box{padding:24px}
}