@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;600;700;800&display=swap');
:root{--navy:#152941;--deep:#102238;--blue:#2367a0;--ink:#213247;--muted:#62748a;--line:#dce5ec;--bg:#f6f9fb;--white:#fff;--teal:#1a827d;--sand:#fff5e7}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);font-family:'Noto Sans JP',system-ui,sans-serif;color:var(--ink);line-height:1.9}a{color:#126393;text-underline-offset:3px}a:hover{opacity:.82}.container{width:min(1060px,calc(100% - 36px));margin:auto}.topnotice{background:#edf3f8;border-bottom:1px solid var(--line);font-size:12px;color:#4d6075;padding:7px 0}.topnotice .container{display:flex;gap:12px;flex-wrap:wrap;align-items:center}.topnotice b{background:#243e58;color:white;border-radius:4px;padding:0 8px}.site-header{background:white;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.headinner{min-height:74px;display:flex;justify-content:space-between;align-items:center;gap:14px}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--navy);font-weight:800;line-height:1.4;font-size:16px}.brandmark{width:38px;height:38px;display:grid;place-items:center;border:2px solid #2c708a;border-radius:10px;color:#2c708a;font-size:21px}.brand small{display:block;font-size:10px;color:var(--muted);font-weight:500}.nav{display:flex;gap:19px;align-items:center}.nav a{text-decoration:none;font-weight:700;font-size:13px;color:var(--navy)}.menu-toggle{display:none;border:1px solid var(--line);background:white;padding:8px 13px;border-radius:8px;color:var(--navy)}.hero{background:linear-gradient(118deg,#10253d 0%,#245577 100%);color:white;padding:68px 0 62px}.eyebrow{font-size:13px;letter-spacing:.08em;color:#c6e1ec;font-weight:700}.hero h1{font-size:clamp(29px,4vw,45px);line-height:1.45;margin:10px 0 20px;letter-spacing:.01em}.hero p{max-width:750px;color:#e3edf5;font-size:16px}.chips{display:flex;flex-wrap:wrap;gap:9px;margin-top:22px}.chip{border:1px solid #a1bfce;color:white;border-radius:999px;padding:6px 13px;font-size:12px}.hero-cta{margin-top:24px;display:flex;flex-wrap:wrap;gap:10px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:11px 19px;border-radius:8px;text-decoration:none;font-weight:800;font-size:14px;line-height:1.5;border:1px solid transparent}.btn-white{background:white;color:var(--navy)}.btn-outline{border-color:#b7d3df;color:white}.btn-primary{background:var(--blue);color:white}.page{padding:42px 0 75px}.section{margin:0 0 42px}.section h2{font-size:24px;color:var(--navy);margin:0 0 17px;line-height:1.5}.section h2:before{content:'';display:inline-block;vertical-align:middle;width:5px;height:25px;background:var(--teal);margin-right:12px;border-radius:3px}.intro{font-size:15px;color:#3c5065}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.card{background:white;border:1px solid var(--line);border-radius:13px;padding:22px;box-shadow:0 5px 18px #112c4310}.card h3{margin:0 0 8px;font-size:17px;line-height:1.55;color:var(--navy)}.card p{font-size:13px;margin:0 0 13px;color:#52677b}.card .topic{font-size:11px;font-weight:700;color:var(--teal);display:block;margin-bottom:8px}.card a{font-weight:800;font-size:13px}.notice{padding:18px 20px;border-left:4px solid #c28d45;background:var(--sand);border-radius:5px;margin:20px 0;font-size:14px}.info{padding:18px 20px;border-left:4px solid #3592a2;background:#eaf6f8;border-radius:5px;margin:20px 0;font-size:14px}.box{background:white;border:1px solid var(--line);border-radius:13px;padding:22px;margin:18px 0}.box h3{margin:0 0 11px;color:var(--navy)}.box ul{margin:0;padding-left:23px}.tablewrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:12px;margin:20px 0}table{border-collapse:collapse;width:100%;font-size:14px}th,td{text-align:left;padding:13px 15px;vertical-align:top;border-bottom:1px solid var(--line)}th{background:#eaf1f6;color:var(--navy);width:31%}tr:last-child th,tr:last-child td{border-bottom:none}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:11px}.step{background:white;border:1px solid var(--line);padding:18px;border-radius:12px}.step b{display:block;color:#197a81;font-size:12px;margin-bottom:5px}.step strong{display:block;color:var(--navy);font-size:14px}.step p{font-size:12px;color:var(--muted);margin:8px 0 0}.article-wrap{display:grid;grid-template-columns:minmax(0,730px) minmax(210px,1fr);gap:25px;align-items:start}.article{background:white;border:1px solid var(--line);padding:34px 39px;border-radius:13px}.article h1{font-size:clamp(25px,3.5vw,33px);line-height:1.5;color:var(--navy);margin:0 0 17px}.article h2{color:var(--navy);font-size:21px;border-bottom:2px solid #dce8ed;padding-bottom:10px;margin:39px 0 15px}.article h3{font-size:17px;color:var(--navy);margin:24px 0 8px}.article p,.article li{font-size:14px}.article li{margin-bottom:7px}.article ul,.article ol{padding-left:25px}.meta{font-size:12px;color:var(--muted);margin-bottom:18px}.breadcrumbs{font-size:12px;color:var(--muted);margin:0 0 16px}.side{background:white;border:1px solid var(--line);border-radius:12px;padding:19px;position:sticky;top:98px}.side h3{font-size:15px;margin:0 0 11px}.side a{font-size:12px;display:block;margin-bottom:13px}.source{font-size:12px;color:var(--muted);padding-top:12px}.source li{font-size:12px}.footer{background:var(--deep);color:#d6e3ed;padding:32px 0 20px;font-size:12px}.footer a{color:#d9ebf5}.footlinks{display:flex;gap:16px;flex-wrap:wrap}.footer .muted{color:#a8bac9}.tag{font-size:11px;font-weight:800;background:#e6f5f3;color:#166e67;padding:4px 9px;border-radius:4px}.cta-panel{padding:22px;background:#eaf4f9;border:1px solid #cbdfe9;border-radius:13px}.cta-panel h3{margin:0 0 7px;color:var(--navy)}.cta-panel p{font-size:13px}.small{font-size:12px;color:var(--muted)}.checklist{padding-left:22px}.checklist li{margin:10px 0}.highlight{color:#137875;font-weight:800}.cards2{display:grid;grid-template-columns:1fr 1fr;gap:16px}@media(max-width:820px){.nav{display:none;position:absolute;left:0;right:0;top:100%;background:white;padding:14px 20px;box-shadow:0 12px 20px #10283a20;flex-direction:column;align-items:stretch}.nav.open{display:flex}.menu-toggle{display:block}.article-wrap{grid-template-columns:1fr}.side{position:static}.grid{grid-template-columns:repeat(2,1fr)}.steps{grid-template-columns:repeat(2,1fr)}}@media(max-width:550px){.container{width:min(100% - 28px,1060px)}.brand{font-size:13px}.brandmark{width:32px;height:32px}.hero{padding:45px 0}.hero p{font-size:14px}.grid,.cards2,.steps{grid-template-columns:1fr}.article{padding:25px 18px}.section h2{font-size:21px}.card{padding:19px}}