:root{--ink:#1f2733;--ink-sub:#5a6470;--ink-faint:#8c96a2;--hair:#e3e7eb;--bg:#ffffff;--bg-soft:#f4f6f8;--indigo:#1b4965;--indigo-deep:#143a52;--indigo-soft:#e9f1f6;--indigo-bar:#bfd3df;--amber:#f4a300;--amber-text:#8f5f00;--amber-soft:#fdf3df;--maxw:1080px}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;color:var(--ink);background:var(--bg);font-family:Noto Sans JP,Hiragino Kaku Gothic ProN,Hiragino Sans,Meiryo,sans-serif;line-height:1.85;font-size:15px;font-feature-settings:"palt"}a{color:var(--indigo);text-decoration:none}a:hover{text-decoration:underline}.num{font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}.site-header{border-bottom:1px solid var(--hair)}.site-header__inner{display:flex;align-items:center;gap:20px;height:56px}.site-logo{font-size:20px;font-weight:900;color:var(--ink);letter-spacing:.02em;white-space:nowrap}.site-logo:hover{text-decoration:none}.site-logo small{font-size:11px;font-weight:500;color:var(--ink-faint);margin-left:10px;letter-spacing:0}.site-tabs{display:flex;gap:4px;margin-left:auto}.site-tab{padding:5px 14px;font-size:13px;font-weight:700;color:var(--ink-sub);border-radius:999px;white-space:nowrap}.site-tab:hover{text-decoration:none;background:var(--bg-soft)}.site-tab--active{color:#fff;background:var(--indigo)}.site-tab--active:hover{background:var(--indigo-deep)}.site-footer{border-top:1px solid var(--hair);margin-top:72px;padding:26px 0 48px;font-size:12px;color:var(--ink-sub)}.site-footer p{margin:4px 0}.page{display:flex;gap:44px;padding-top:4px}.page__main{flex:1 1;min-width:0;max-width:720px}.page__aside{width:256px;flex:none;padding-top:40px}@media (max-width:900px){.page{flex-direction:column}.page__aside{width:auto;padding-top:0}}.crumbs{font-size:11px;display:flex;flex-wrap:wrap;gap:6px;padding:14px 0 0}.crumbs,.crumbs a{color:var(--ink-faint)}.title-block{margin:14px 0 6px}.title-cat{display:inline-block;font-size:11px;font-weight:700;color:var(--indigo);background:var(--indigo-soft);padding:1px 9px;border-radius:3px;margin-bottom:8px}.title-block h1{font-size:26px;line-height:1.4;margin:0 0 6px}.title-dates{font-size:11px;color:var(--ink-faint);display:flex;flex-wrap:wrap;gap:14px}.lead{font-size:15px;margin:16px 0 0}.sec{margin:46px 0}.sec h2{font-size:18px;margin:0 0 6px;padding-bottom:8px;border-bottom:1px solid var(--hair)}.sec p{margin:12px 0}.sec-note{font-size:11px;color:var(--ink-faint);margin-top:8px}.facts{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:10px;gap:10px;margin:22px 0 0}@media (max-width:700px){.facts{grid-template-columns:repeat(2,1fr)}}.fact{background:var(--bg-soft);border-left:3px solid var(--indigo);padding:10px 12px 11px;border-radius:2px}.fact--hot{border-left-color:var(--amber)}.fact__label{font-size:11px;color:var(--ink-sub);font-weight:700;line-height:1.5}.fact__value{font-size:19px;font-weight:900;line-height:1.35;margin-top:2px;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.fact__value .unit{font-size:11px;font-weight:700;color:var(--ink-sub);margin-left:2px}.fact__detail{font-size:11px;color:var(--ink-faint);margin-top:2px;line-height:1.5}.chart-box{margin:18px 0 0}.chart-box svg{width:100%;height:auto;display:block}.chart-src{font-size:11px;color:var(--ink-faint);margin-top:8px;line-height:1.6}.tbl-wrap{overflow-x:auto}.tbl{width:100%;border-collapse:collapse;font-size:13px;margin-top:14px}.tbl th{text-align:left;font-size:11px;color:var(--ink-sub);border-bottom:1px solid var(--ink);padding:6px 8px;font-weight:700}.tbl td,.tbl th{white-space:nowrap}.tbl td{border-bottom:1px solid var(--hair);padding:7px 8px}.tbl td.num,.tbl th.num{text-align:right;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.tbl .hot{color:var(--indigo);font-weight:700}.timeline{list-style:none;margin:18px 0 0;padding:0}.timeline li{position:relative;padding:0 0 22px 22px;border-left:2px solid var(--indigo-bar);margin-left:6px}.timeline li:last-child{padding-bottom:4px;border-left-color:transparent}.timeline li:before{content:"";position:absolute;left:-6px;top:7px;width:10px;height:10px;border-radius:50%;background:var(--indigo)}.timeline time{font-size:12px;font-weight:900;color:var(--indigo)}.timeline h3{font-size:14px;margin:2px 0}.timeline p{font-size:13px;color:var(--ink-sub);margin:0}.levels{display:flex;gap:8px;margin-top:18px;align-items:stretch;flex-wrap:wrap}.level{flex:1 1;min-width:150px;background:var(--bg-soft);padding:10px 12px;border-radius:2px;border-top:3px solid var(--indigo-bar);font-size:12px;color:var(--ink-sub);line-height:1.6}.level--current{border-top-color:var(--amber);background:var(--amber-soft)}.level b{display:block;font-size:14px;color:var(--ink);margin-bottom:2px}.cta{margin:48px 0;padding:22px 22px 18px;border:2px solid var(--indigo);border-radius:4px}.cta h2{font-size:16px;margin:0 0 4px}.cta>p{font-size:13px;color:var(--ink-sub);margin:0 0 14px}.cta__btns{display:flex;gap:10px;flex-wrap:wrap}.cta__btn{flex:1 1;min-width:210px;display:block;text-align:center;background:var(--indigo);color:#fff;font-weight:900;font-size:14px;padding:11px 16px;border-radius:4px;line-height:1.5}.cta__btn:hover{text-decoration:none;background:var(--indigo-deep)}.cta__btn small{display:block;font-weight:500;font-size:11px;opacity:.85}.cta__disclosure{font-size:11px;color:var(--ink-faint);margin:12px 0 0;line-height:1.6}.faq dt{font-weight:700;font-size:14px;margin-top:18px}.faq dt:before{content:"Q. ";color:var(--indigo);font-weight:900}.faq dd{margin:4px 0 0;font-size:13.5px;color:var(--ink-sub)}.sources ol{padding-left:20px;margin:14px 0 0;font-size:12.5px}.sources li{margin-bottom:9px;color:var(--ink-sub)}.sources .src-name{font-weight:700}.sources .src-meta{color:var(--ink-faint);font-size:11px}.disclaimers{margin-top:18px;padding:12px 14px;background:var(--bg-soft);border-radius:2px}.disclaimers p{font-size:11.5px;color:var(--ink-sub);margin:4px 0;line-height:1.7}.aside-box{border-top:2px solid var(--indigo);padding-top:10px;margin-bottom:28px}.aside-box h2{font-size:13px;margin:0 0 8px}.aside-list{list-style:none;margin:0;padding:0;font-size:13px}.aside-list li{padding:8px 0;border-bottom:1px solid var(--hair);display:flex;justify-content:space-between;align-items:center;gap:8px}.chip{font-size:10px;background:var(--bg-soft);padding:1px 7px;border-radius:3px;white-space:nowrap}.aside-note,.chip{color:var(--ink-faint)}.aside-note{font-size:11px;line-height:1.7;margin:6px 0 0}.hero{padding:44px 0 4px}.hero h1{font-size:30px;margin:0 0 10px;line-height:1.45}.hero p{color:var(--ink-sub);margin:0;font-size:14px}.section-cards{display:grid;grid-template-columns:1fr 1fr;grid-gap:14px;gap:14px;margin:30px 0}@media (max-width:700px){.section-cards{grid-template-columns:1fr}}.scard{display:block;background:var(--bg-soft);padding:20px;border-radius:4px;border-left:4px solid var(--indigo);color:var(--ink)}a.scard:hover{text-decoration:none;background:var(--indigo-soft)}.scard--soon{border-left-color:var(--hair)}.scard b{font-size:17px;display:block;margin-bottom:4px}.scard span{font-size:12.5px;color:var(--ink-sub)}.list-item{display:block;padding:18px 4px;border-bottom:1px solid var(--hair);color:var(--ink)}.list-item:hover{text-decoration:none;background:var(--bg-soft)}.list-item b{font-size:16px}.list-item .cat{font-size:11px;font-weight:700;color:var(--indigo);background:var(--indigo-soft);padding:1px 8px;border-radius:3px;margin-right:10px}.kv{display:flex;gap:20px;font-size:12px;color:var(--ink-sub);margin-top:6px;flex-wrap:wrap}.kv b{color:var(--indigo);font-size:15px;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}