:root{--green-900:#1b5e20;--green-700:#2e7d32;--green-600:#43a047;--green-100:#c8e6c9;--green-50:#e8f5e9;--bg:#f3faf3;--text:#2b2b2b;--muted:#6b7b6b;--card:#fff;--orange:#e65100;--red:#d32f2f;--blue:#1565c0}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{background:var(--bg);color:var(--text);margin:0;font-family:Hiragino Kaku Gothic ProN,Hiragino Sans,BIZ UDPGothic,Meiryo,system-ui,sans-serif;line-height:1.9}a{color:var(--green-700)}a:hover{color:var(--green-600)}img{max-width:100%;height:auto}.container{max-width:900px;margin:0 auto;padding:0 16px}.site-header{background:linear-gradient(135deg, var(--green-900), var(--green-600));color:#fff;padding:10px 0;box-shadow:0 2px 6px #003c0040}.site-header .container{flex-wrap:wrap;align-items:center;gap:10px 18px;display:flex}.site-logo{background:var(--green-50);border-radius:14px;padding:6px 10px;line-height:0;display:block;box-shadow:0 2px 6px #00280040}.site-banner{border-radius:8px;width:auto;height:76px}@media (max-width:760px){.site-banner{height:54px}}@media (max-width:420px){.site-banner{height:44px}}.site-nav{flex-wrap:wrap;gap:4px 14px;margin-left:auto;font-size:.92rem;display:flex}.header-home{justify-content:center;padding-top:4px;padding-bottom:4px}.header-home .site-nav{margin-left:0;font-size:1rem}.site-nav a{color:#eaffea;font-weight:600;text-decoration:none}.site-nav a:hover{color:#fff;text-decoration:underline}.header-search{flex-basis:100%}@media (min-width:760px){.header-search{flex-basis:auto;width:260px}}.site-footer{background:var(--green-900);color:#d8ecd8;margin-top:48px;padding:28px 0 36px;font-size:.88rem}.site-footer a{color:#bfe8bf}.site-footer .foot-links{flex-wrap:wrap;gap:6px 20px;margin:0 0 14px;padding:0;list-style:none;display:flex}main{padding:24px 0}.article-card{background:var(--card);border-radius:14px;padding:22px clamp(14px,4vw,34px) 34px;box-shadow:0 1px 4px #003c0014}.breadcrumb{color:var(--muted);margin-bottom:10px;font-size:.82rem}.breadcrumb 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var(--green-600);width:100%;color:var(--text);background:#fff;border-radius:24px;outline:none;padding:10px 14px;font-size:16px}.search-box input:focus{border-color:var(--green-900);box-shadow:0 0 0 3px #43a04740}.search-results{z-index:30;border:1px solid var(--green-100);background:#fff;border-radius:12px;max-height:60vh;padding:6px;position:absolute;top:calc(100% + 6px);left:0;right:0;overflow-y:auto;box-shadow:0 8px 24px #0028002e}.search-results a{color:var(--text);border-radius:8px;padding:8px 12px;text-decoration:none;display:block}.search-results a:hover{background:var(--green-50)}.search-results .hit-title{color:var(--green-900);font-weight:700}.search-results .hit-meaning{color:var(--muted);font-size:.8rem}.search-empty{color:var(--muted);padding:10px 12px;font-size:.9rem}.hero{text-align:center;background:radial-gradient(circle at 12% 100%, #66bb6a40, transparent 40%), radial-gradient(circle at 88% 100%, #66bb6a40, transparent 40%), linear-gradient(180deg, var(--green-50), var(--bg));border-radius:0 0 28px 28px;padding:36px 16px 30px}.hero-banner{margin:0 0 14px;line-height:0}.hero-banner img{border:4px solid var(--green-600);background:#fff;border-radius:16px;width:min(92%,600px);height:auto;box-shadow:0 6px 18px #003c002e}.hero p.lead{color:var(--muted);max-width:620px;margin:0 auto 20px}.hero .search-box{max-width:560px;margin:0 auto}.section-title{color:var(--green-900);border-left:8px solid var(--green-600);margin:2.2em 0 .8em;padding-left:12px;font-size:1.25rem}.card-grid{grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px;display:grid}.cat-card{background:var(--card);border:2px solid var(--green-100);color:var(--text);border-radius:14px;padding:18px;text-decoration:none;transition:transform .12s,border-color .12s;display:block}.cat-card:hover{border-color:var(--green-600);transform:translateY(-2px)}.cat-card .cat-name{color:var(--green-900);margin-bottom:4px;font-size:1.05rem;font-weight:800;display:block}.cat-card 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18px;font-size:1.05rem;display:inline-block}.lead-summary{background:var(--green-50);border:2px solid var(--green-100);border-radius:12px;margin:0 0 1.4em;padding:14px 18px}.lead-summary strong{color:var(--green-900)}.toc{border:2px solid var(--green-100);background:#fff;border-radius:12px;margin-bottom:1.6em;padding:12px 18px;font-size:.92rem}.toc-title{color:var(--green-900);margin-bottom:4px;font-weight:800}.toc ol{margin:0;padding-left:1.4em}.toc li{margin:2px 0}.toc li.toc-sub{margin-left:1.2em;list-style:circle}.toc a{text-decoration:none}.toc a:hover{text-decoration:underline}.faq-box{background:var(--green-50);border-radius:12px;margin-top:2em;padding:4px 20px 16px}.faq-box h2{border-left:8px solid var(--green-600);color:var(--green-900);background:0 0;border-radius:4px;margin:1em 0 .8em;padding:6px 12px;font-size:1.15rem}.faq-box dt{color:var(--green-900);margin-top:.9em;font-weight:800}.faq-box dd{margin:.2em 0 .6em 1em}.today-word{background:linear-gradient(135deg, #fff, 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