:root{font-family:Noto Sans JP,sans-serif;color:#173d4c;background:#f8fbfc;font-synthesis:none}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-width:320px}a{color:inherit;text-decoration:none}button,a{-webkit-tap-highlight-color:transparent}a:focus-visible{outline:3px solid #429dc0;outline-offset:4px}::selection{background:#d9ed9d;color:#173d4c}.shell{width:min(1180px,calc(100% - 72px));margin-inline:auto}.skip-link{position:absolute;top:-100px;left:16px;z-index:10;padding:12px;background:#fff}.skip-link:focus{top:12px}.site-header{border-bottom:1px solid #e0ebec;background:#f8fbfc}.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:88px;gap:28px}.brand{display:inline-flex;align-items:center;gap:9px;white-space:nowrap}.brand-icon{width:37px;height:37px;color:#24728a}.brand-icon svg{width:100%;height:100%}.brand-name{font-weight:800;font-size:1.11rem;letter-spacing:-.055em}.brand-name span{color:#287e8c}.main-nav{display:flex;align-items:center;gap:clamp(12px,2vw,30px);white-space:nowrap}.main-nav a{font-size:.82rem;font-weight:700;color:#45616b;transition:color .2s}.main-nav a:hover,.footer-main a:hover{color:#198698}.hero{display:grid;grid-template-columns:1.11fr .89fr;gap:7%;align-items:center;padding-block:104px 112px}.eyebrow{display:inline-flex;align-items:center;gap:11px;font:700 .74rem DM Sans,Noto Sans JP,sans-serif;letter-spacing:.14em;color:#438899}.eyebrow-line{width:26px;height:1px;background:currentColor}.hero h1{font-size:clamp(2.6rem,4.4vw,4.3rem);line-height:1.35;letter-spacing:-.065em;margin:29px 0 24px;font-weight:800}.hero h1 em{font-style:normal;color:#2c8e9a;position:relative;white-space:nowrap}.hero h1 em:after{content:"";position:absolute;bottom:-5px;left:0;width:100%;height:9px;border-radius:100%;border-top:3px solid #b5d56a;transform:rotate(-2deg)}.hero-copy>p{max-width:540px;color:#57707a;line-height:2.05;font-size:1rem;margin:0}.hero-actions{display:flex;align-items:center;gap:29px;margin-top:38px}.button{min-height:54px;display:inline-flex;align-items:center;justify-content:center;gap:28px;padding:13px 25px;border-radius:8px;font-size:.9rem;font-weight:700;transition:transform .2s,background .2s;white-space:nowrap}.button:hover{transform:translateY(-3px)}.button.primary{background:#1d6478;color:#fff}.button.primary:hover{background:#154c60}.button.dark{background:#183f4e;color:#fff}.button.dark:hover{background:#28677a}.text-link,.section-link{font-size:.87rem;font-weight:700;color:#28778b;white-space:nowrap}.text-link:hover,.section-link:hover{text-decoration:underline;text-underline-offset:5px}.hero-panel{background:#e6f1ec;border-radius:18px;padding:26px 36px 29px;box-shadow:25px 23px #edf4e5;transform:rotate(1deg)}.panel-top,.panel-foot{display:flex;align-items:center;justify-content:space-between;color:#51737b;font:700 .72rem DM Sans,sans-serif;letter-spacing:.13em}.panel-symbol{font-size:2.5rem;color:#288593;line-height:1}.steps{margin:28px 0 25px}.step{display:flex;align-items:center;border-top:1px solid #bdd9d3;gap:24px;padding:20px 0}.step:last-child{border-bottom:1px solid #bdd9d3}.step>span{font:700 1.12rem DM Sans,sans-serif;color:#2d8792}.step strong{font-size:1.38rem;letter-spacing:-.03em}.step small{display:block;font-size:.78rem;color:#57747b;margin-top:4px}.panel-foot{color:#2b8994}.intro-band{background:#dcedef}.intro-inner{display:flex;align-items:center;gap:29px;padding-block:30px}.asterisk{font-size:2.5rem;color:#247e8b}.intro-inner p{font-size:1.04rem;line-height:1.8;margin:0}.intro-inner strong{color:#267d8b}.section{padding-block:105px}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:36px}.section-heading h2{font-size:clamp(1.8rem,3vw,2.45rem);letter-spacing:-.05em;line-height:1.4;margin:12px 0 0}.section-heading>p{margin:0 0 4px;color:#69808a;line-height:1.8;font-size:.91rem}.topic-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:15px}.topic-card{position:relative;display:flex;flex-direction:column;min-height:242px;padding:22px;border:1px solid #dbe8e8;border-radius:11px;background:#fff;transition:transform .2s,box-shadow .2s}.topic-card:hover,.article-card:hover{transform:translateY(-5px);box-shadow:0 18px 32px #1a657014}.topic-card:nth-child(-n+3){grid-column:span 2}.topic-card:nth-child(n+4){grid-column:span 3}.topic-card.blue{background:#eaf4f8}.topic-card.green{background:#e8f3ed}.topic-card.yellow{background:#f5f4e7}.topic-num{font:700 .7rem DM Sans,sans-serif;letter-spacing:.13em;color:#63838c}.topic-glyph{position:absolute;right:23px;top:15px;font-size:2rem;font-weight:400;color:#388699}.topic-card h3{font-size:1.3rem;margin:53px 0 10px;letter-spacing:-.04em}.topic-card p{font-size:.82rem;line-height:1.75;color:#5a7480;margin:0;padding-right:18px}.topic-arrow{position:absolute;right:22px;bottom:17px;color:#317e90}.articles-section{background:#f0f6f7}.article-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.article-card{display:flex;flex-direction:column;min-height:294px;padding:27px;background:#fff;border:1px solid #e1eaea;border-radius:11px;transition:transform .2s,box-shadow .2s}.article-card.featured{background:#194d60;color:#fff;border-color:#194d60}.card-meta{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:.72rem;color:#78919a}.article-card.featured .card-meta{color:#c5dee4}.category-pill{display:inline-block;border-radius:100px;padding:7px 12px;font-size:.72rem;line-height:1.2;font-weight:700;color:#286c7d;background:#e6f2f6;white-space:nowrap}.category-pill.green{background:#dff0e2;color:#3d7860}.category-pill.yellow{background:#f1f0d8;color:#797441}.article-card.featured .category-pill{background:#cbe9df;color:#215965}.article-card h3{font-size:1.18rem;letter-spacing:-.035em;line-height:1.6;margin:25px 0 9px}.article-card p{font-size:.81rem;line-height:1.8;color:#6b828b;margin:0}.article-card.featured p{color:#d5e8ec}.card-link{margin-top:auto;padding-top:25px;font-size:.8rem;font-weight:700;color:#2a8394}.article-card.featured .card-link{color:#dbecab}.card-link span{margin-left:8px}.closing{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-block:80px 90px}.closing h2{font-size:clamp(1.8rem,3vw,2.5rem);line-height:1.5;margin:13px 0 0;letter-spacing:-.05em}.site-footer{background:#163d4c;color:#d9e8eb;padding-top:50px}.footer-main{display:flex;justify-content:space-between;gap:30px;padding-bottom:55px}.footer-brand{font-size:1.08rem;font-weight:800;color:#fff}.footer-main p{font-size:.82rem;color:#a9c1c8;margin-top:11px}.footer-main nav{display:flex;flex-wrap:wrap;align-content:start;justify-content:end;gap:15px 26px;max-width:510px}.footer-main nav a{font-size:.78rem}.footer-bottom{border-top:1px solid #42616c;display:flex;justify-content:space-between;gap:15px;padding-block:21px;color:#a4bfc8;font-size:.75rem}.footer-bottom small{font-size:inherit}.page-head{padding-block:65px 55px}.page-head .eyebrow{display:flex;margin-bottom:16px}.page-head h1{font-size:clamp(2.2rem,4vw,3.2rem);margin:0 0 15px;letter-spacing:-.06em}.page-head p{color:#617984;line-height:1.8;margin:0}.page-content{min-height:270px;padding-bottom:105px}.list-heading{font-size:1.35rem;margin:0 0 25px}.empty-state{border:1px dashed #a4c7cf;border-radius:10px;background:#f0f7f7;padding:35px}.empty-state p{margin:0 0 14px}.back-link{display:block;margin:0 0 34px;color:#40788a;font-size:.86rem;font-weight:700}.static-content{max-width:850px;margin-left:max(calc((100% - 1180px)/2),36px);padding-bottom:115px}.breadcrumbs{display:flex;gap:10px;align-items:center;flex-wrap:wrap;font-size:.76rem;color:#6e8992;margin-top:32px}.breadcrumbs a:hover{text-decoration:underline}.breadcrumbs span[aria-current]{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:320px}.article-header{max-width:790px;padding:60px 0 54px}.article-header h1{font-size:clamp(2rem,4vw,3rem);line-height:1.5;letter-spacing:-.06em;margin:22px 0}.article-header>p{font-size:1rem;color:#617984;line-height:1.85}.article-body{display:grid;grid-template-columns:230px minmax(0,710px);gap:70px;border-top:1px solid #dce9ea;padding-top:54px}.article-aside{color:#69828b;font-size:.82rem;line-height:1.8}.article-aside>span{font:700 .73rem DM Sans,sans-serif;letter-spacing:.1em;color:#2e8596}.article-aside a{color:#287b8c;font-weight:700}.prose{font-size:1rem;line-height:2.15;color:#324f59}.prose>p:first-child{margin-top:0}.prose h2{font-size:1.45rem;color:#1b4858;line-height:1.55;letter-spacing:-.04em;margin:2.5em 0 .9em;border-left:4px solid #91c7b9;padding-left:17px}.prose h3{font-size:1.1rem;color:#1b4858;margin:2em 0 .7em}.prose p{margin:1.1em 0}.prose a:not(.button){color:#117891;text-decoration:underline;text-underline-offset:3px}.prose ul{padding-left:1.4em}.prose li{padding-left:.3em;margin:.35em 0}.prose strong{color:#1b5260}.prose table{border-collapse:collapse;width:100%;font-size:.9rem;line-height:1.65;margin:25px 0}.prose th,.prose td{border-bottom:1px solid #d5e5e6;padding:13px;text-align:left}.prose th{background:#e9f3f3}.article-note{margin-top:70px;padding:23px 27px;border-radius:9px;background:#edf5f3;font-size:.86rem;line-height:1.8}.article-note p{margin:.4em 0 0}.article-end{display:flex;align-items:center;justify-content:space-between;max-width:1010px;margin:65px 0 100px;border-top:1px solid #dce9ea;padding-top:30px;font-weight:700}.static-content .button{margin-top:23px}@media(max-width:1050px){.header-inner{align-items:flex-start;flex-direction:column;gap:0;padding-top:19px;min-height:auto}.main-nav{max-width:100%;overflow-x:auto;gap:23px;padding:16px 0}.hero{gap:5%}.article-body{gap:40px}.topic-card{min-height:260px}}@media(max-width:760px){.shell{width:min(100% - 38px,620px)}.hero{grid-template-columns:1fr;padding-block:70px 80px;gap:55px}.hero h1{font-size:clamp(2.35rem,9vw,3.4rem);margin-top:18px}.hero-copy>p{line-height:1.9}.hero-panel{transform:none;box-shadow:11px 12px #edf4e5}.hero-actions{gap:20px;flex-wrap:wrap}.intro-inner{gap:15px}.intro-inner p{font-size:.93rem}.section{padding-block:75px}.section-heading{align-items:start;flex-direction:column;gap:12px}.section-heading>p br{display:none}.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.topic-card:nth-child(n){grid-column:span 1}.topic-card{min-height:220px;padding:19px}.topic-card h3{font-size:1.07rem;margin-top:50px}.topic-card p{font-size:.75rem;padding-right:0}.article-grid{grid-template-columns:1fr}.article-card{min-height:230px}.closing{align-items:start;flex-direction:column;padding-block:65px}.footer-main{flex-direction:column}.footer-main nav{justify-content:start}.article-body{grid-template-columns:1fr;gap:15px}.article-aside{display:none}.article-header{padding-block:45px}.article-end{margin-bottom:75px}.static-content{width:min(100% - 38px,620px);margin-inline:auto}.page-head{padding-block:55px 42px}.page-content{padding-bottom:75px}}@media(max-width:420px){.brand-name{font-size:1rem}.main-nav{gap:18px}.topic-grid{grid-template-columns:1fr}.topic-card{min-height:190px}.topic-card h3{margin-top:35px}.hero-panel{padding:22px}.footer-bottom{flex-direction:column}.article-end{align-items:start;flex-direction:column;gap:20px}.breadcrumbs span[aria-current]{max-width:180px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}:root{color:#174f89;background:#fbfdff}body{background:#fbfdff}.site-header{background:#fff;border-color:#d8ecff}.brand-icon,.brand-name,.brand-name span{color:#1764ad}.main-nav a{color:#355f89}.main-nav a:hover,.footer-main a:hover{color:#6bbfee}.eyebrow,.text-link,.section-link,.back-link{color:#246fb7}.hero{position:relative;padding-block:80px 88px;grid-template-columns:1.05fr .95fr;gap:3%}.hero-copy{position:relative;z-index:1}.hero h1{color:#144d88}.hero h1 em{color:#2379c8}.hero h1 em:after{border-color:#ffd36b}.hero-copy>p,.section-heading>p,.page-head p{color:#506f90}.button.primary{background:#1769bd;color:#fff;box-shadow:0 8px 19px #1769bd28}.button.primary:hover{background:#0f559e}.button.dark{background:#155ba5}.button.dark:hover{background:#0f4c8c}.hero-visual{position:relative;display:grid;place-items:center;min-height:520px;isolation:isolate}.hero-halo{position:absolute;inset:5% 3% 9% 7%;z-index:-1;border-radius:48% 52% 45% 55%;background:radial-gradient(circle at 30% 25%,#f4fdff 0,#d4efff 48%,#bce2fa)}.hero-visual>img{position:relative;width:min(100%,510px);height:auto;filter:drop-shadow(0 22px 14px #286dac22)}.hero-note{position:absolute;bottom:5%;left:1%;display:flex;flex-direction:column;gap:4px;padding:13px 19px;background:#fff;border:1px solid #c8e4f8;border-radius:13px;box-shadow:0 12px 25px #1c62a91d;transform:rotate(-3deg)}.hero-note span{font-size:.78rem;color:#457eb2}.hero-note strong{font-size:.92rem;color:#185895}.intro-band{background:#e8f6ff;border-block:1px solid #d9ecfb}.intro-inner{gap:23px}.intro-compass{display:grid;place-items:center;flex:none;width:48px;height:48px;border-radius:50%;background:#c6e9ff;border:2px solid #88bfea;color:#1162ac;font-size:1.4rem}.intro-inner strong{color:#166ab6}.intro-sign{margin-left:auto;color:#3984b9;font-size:.85rem;font-weight:700;white-space:nowrap}.topic-card{border-color:#d4e7f6;box-shadow:0 8px 19px #155d9c0b}.topic-card.blue{background:#e6f5ff}.topic-card.green{background:#e7f7ef}.topic-card.yellow{background:#fff7df}.topic-num,.topic-glyph,.topic-arrow{color:#226caf}.topic-card h3{color:#175896}.topic-card p{color:#53728f}.articles-section{background:#f0f9ff}.article-card{border-color:#d8e9f7}.article-card.featured{position:relative;overflow:hidden;background:linear-gradient(145deg,#1769b9,#174f91);border-color:#1769b9;padding-right:95px}.article-card.featured h3,.article-card.featured p,.article-card.featured .card-meta,.article-card.featured .card-link{position:relative;z-index:1}.article-card.featured .category-pill{background:#e3f8ed;color:#247653}.article-card.featured .card-link{color:#ffe49e}.article-card p{color:#617d97}.card-link{color:#176cbb}.card-mascot{position:absolute;right:-54px;bottom:-18px;width:190px;height:auto;opacity:.93;filter:drop-shadow(0 8px 7px #092b6633)}.category-pill{background:#e1f2ff;color:#1f67a9}.category-pill.green{background:#dff5e9;color:#33785f}.category-pill.yellow{background:#fff1cc;color:#856b19}.closing{position:relative;overflow:hidden;min-height:250px;margin-block:42px 90px;padding:54px 50px 54px 213px;border-radius:19px;background:linear-gradient(120deg,#e3f4ff,#ecfaff 68%,#e6f8ef)}.closing-mascot{position:absolute;left:0;bottom:-35px;width:220px;height:auto}.closing h2{color:#14538e}.closing .button{position:relative;z-index:1}.site-footer{background:#164b83}.footer-main{align-items:start}.footer-identity{display:flex;align-items:center;gap:15px}.footer-identity img{width:75px;height:75px;object-fit:contain;border-radius:50%;background:#d8efff}.footer-main p,.footer-bottom{color:#d2e6f3}.footer-bottom{border-color:#4b78a1}.page-head,.page-head h1{color:#164f8c}.category-head{position:relative;display:flex;align-items:center;justify-content:space-between;gap:25px;min-height:255px;padding:39px 45px;margin-block:32px 55px;border-radius:17px;background:linear-gradient(115deg,#e7f5ff,#f2fbff 65%,#e8f8f0);overflow:hidden}.category-head>div{position:relative;z-index:1}.category-head .back-link{margin-bottom:27px}.category-head>img{align-self:end;width:230px;height:210px;object-fit:contain;object-position:bottom;margin-bottom:-40px;flex:none}.page-content{min-height:300px}.list-heading{color:#18558e}.empty-state{display:flex;align-items:center;gap:24px;border-color:#a8d7f6;background:#edf8ff}.empty-state img{width:95px;height:95px;object-fit:contain}.empty-state p{margin-top:0;color:#285e8d}.article-header{max-width:none;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:48px 40px 42px;margin-top:30px;border-radius:16px;background:linear-gradient(110deg,#e9f6ff,#f5fcff 75%,#e8f8ef)}.article-header>div{max-width:780px}.article-header h1{color:#174f8b}.article-header>div>p{color:#52718f;line-height:1.85}.article-header>img{width:190px;height:190px;object-fit:contain;flex:none;align-self:end;margin-bottom:-42px}.article-body{border-color:#d5e8f8;margin-top:31px}.article-aside{color:#4e7191}.article-aside>a{display:inline-block;margin-top:18px;color:#1c70b8}.mascot-aside{border-radius:13px;border:1px solid #cce5f6;background:#eff9ff;padding:15px;text-align:center}.mascot-aside img{width:118px;height:118px;object-fit:contain}.mascot-aside span{display:block;color:#1765a8;font-weight:700}.mascot-aside p{margin:9px 0 0;line-height:1.7}.prose{color:#334d66}.prose h2,.prose h3,.prose strong{color:#165991}.prose h2{border-color:#85cbe8}.prose a:not(.button){color:#166eb7}.prose th{background:#e8f5ff}.prose th,.prose td{border-color:#d8e7f3}.article-note{background:#e9f7ff}.article-end{border-color:#d7e9f7}@media(max-width:1050px){.hero{gap:3%}.hero-visual{min-height:430px}.hero-note{left:-2%}.closing{padding-left:180px}.closing-mascot{width:190px}}@media(max-width:760px){.hero{padding-block:58px 65px;gap:20px}.hero-visual{min-height:390px;max-width:490px;width:100%;margin:auto}.hero-visual>img{width:min(100%,400px)}.hero-note{left:4%;bottom:0}.intro-sign{display:none}.closing{margin-block:25px 70px;padding:38px 25px 170px;min-height:330px;align-items:start}.closing-mascot{width:185px;left:auto;right:13px;bottom:-22px}.closing h2{font-size:1.7rem}.closing .button{margin-top:4px}.category-head{margin-block:18px 35px;min-height:245px;padding:25px}.category-head>img{width:150px;height:165px;margin-right:-15px;margin-bottom:-28px}.article-header{margin-top:22px;padding:30px 24px 27px}.article-header>img{width:120px;height:120px;margin-bottom:-28px}.article-header h1{font-size:1.65rem}.article-body{margin-top:22px}.footer-identity img{width:65px;height:65px}}@media(max-width:420px){.hero-visual{min-height:330px}.hero-visual>img{width:310px}.hero-note{font-size:.75rem}.category-head>img{width:115px;height:140px}.category-head h1{font-size:2rem}.article-header>img{width:85px;height:85px}.article-header h1{font-size:1.45rem}.article-card.featured{padding-right:72px}.card-mascot{width:145px;right:-52px}.closing{padding-bottom:165px}.closing-mascot{width:160px}}