:root{color-scheme:light;--color-bg:#fffdf8;--color-surface:#fff;--color-text:#202225;--color-muted:#62676d;--color-line:#e5e5df;--color-accent:#315f86;--color-study:#c75b69;--color-study-soft:#fff1f2;--color-pc:#397ba6;--color-pc-soft:#eef7fc;--color-money:#9a6c16;--color-money-soft:#fff7df;--color-mobility:#3e7c53;--color-mobility-soft:#eef8f0;--color-future:#b98b34;--color-future-soft:#fff8e8;--radius-card:1.25rem;--shadow-card:0 14px 40px #31394014;--content-width:90rem}*{box-sizing:border-box}html{scroll-behavior:smooth;background:var(--color-bg);color:var(--color-text);font-family:Yu Gothic UI,Hiragino Sans,Noto Sans JP,system-ui,sans-serif}body{min-width:20rem;margin:0;font-size:1rem;line-height:1.75;overflow-x:clip}button,input{font:inherit}img{max-width:100%;height:auto}a{color:var(--color-accent)}.skip-link{z-index:10;background:var(--color-text);color:#fff;padding:.75rem 1rem;position:fixed;top:-5rem;left:1rem}.skip-link:focus{top:1rem}.site-header{z-index:5;backdrop-filter:blur(14px);background:#fffdf8eb;border-bottom:1px solid #e5e5dfbf;position:relative}.site-header__inner{width:min(calc(100% - 2.5rem), var(--content-width));align-items:center;gap:clamp(1rem,3vw,3rem);min-height:5.25rem;margin-inline:auto;display:flex}.site-header a{color:var(--color-text);text-decoration:none}.brand{flex:none;align-items:center;gap:.7rem;display:inline-flex}.brand img{object-fit:contain;width:4.5rem;height:3rem}.brand__name{letter-spacing:.09em;white-space:nowrap;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-weight:700}.main-nav{align-items:center;gap:clamp(1rem,2.5vw,2.5rem);margin-inline:auto;display:flex}.main-nav a{padding-block:.4rem;font-size:.95rem;font-weight:700;position:relative}.main-nav a:after{content:"";background:var(--color-study);height:2px;transition:transform .2s;position:absolute;inset:auto 0 0;transform:scaleX(0)}.main-nav a:hover:after,.main-nav a:focus-visible:after{transform:scaleX(1)}.header-search-link{border:1px solid var(--color-line);background:#f6f5f1;border-radius:999px;justify-content:space-between;align-items:center;gap:1rem;min-width:16rem;padding:.7rem .9rem .7rem 1.15rem;font-size:.86rem;display:flex;color:var(--color-muted)!important}.header-search-link span:last-child{color:var(--color-text);font-size:1.35rem}.page-shell{min-height:50vh}.page-shell>h1,.page-shell>p,.page-shell>ul{width:min(100% - 2rem,62rem);margin-inline:auto}.page-shell>h1{margin-top:3rem}.ad-slot{border:1px dashed var(--color-line);place-items:center;min-height:15.625rem;display:grid}.ad-slot--preview{color:#8a8e91;background:#fafaf7;border-radius:1rem;min-height:7.5rem;font-size:.78rem}.site-footer{background:#e9f0f3;margin-top:4rem;position:relative;overflow:hidden}.site-footer__landscape{height:4rem;position:absolute;inset:0 0 auto;transform:translateY(-65%)}.site-footer__landscape span{background:#d9e5eb;border-radius:50% 50% 0 0;width:45%;height:5rem;position:absolute;bottom:0}.site-footer__landscape span:first-child{left:-8%}.site-footer__landscape span:nth-child(2){background:#e2eaee;width:50%;height:3.5rem;left:29%}.site-footer__landscape span:nth-child(3){background:#d6e2e8;height:6rem;right:-10%}.site-footer__inner{width:min(calc(100% - 2.5rem), var(--content-width));justify-content:space-between;align-items:center;gap:2rem;min-height:9rem;margin-inline:auto;padding-block:2.5rem 1.5rem;display:flex;position:relative}.brand--footer{color:var(--color-text);text-decoration:none}.brand--footer span{display:grid}.brand--footer strong{letter-spacing:.08em;font-family:ui-monospace,Consolas,monospace}.brand--footer small{color:var(--color-muted)}.site-footer__meta{justify-items:end;gap:.8rem;display:grid}.site-footer__meta nav{flex-wrap:wrap;justify-content:flex-end;gap:.45rem 1.1rem;display:flex}.site-footer__meta a{color:var(--color-text);font-size:.82rem;text-decoration:none}.site-footer__meta a:hover,.site-footer__meta a:focus-visible{text-underline-offset:.2em;text-decoration:underline}.site-footer__meta p{color:var(--color-muted);margin:0;font-size:.78rem}@media (width<=64rem){.site-header__inner{min-height:4.5rem}.main-nav{display:none}.header-search-link{min-width:auto;margin-left:auto}.header-search-link span:first-child{display:none}}@media (width<=38rem){.site-header__inner{width:min(calc(100% - 1.5rem), var(--content-width))}.brand img{width:3.4rem;height:2.5rem}.brand__name{letter-spacing:.04em;font-size:.82rem}.header-search-link{padding:.45rem .75rem}.site-footer__inner{flex-direction:column;align-items:flex-start}.site-footer__meta{justify-items:start}.site-footer__meta nav{justify-content:flex-start}}