:root { --ink:#233e33; --green:#215843; --sage:#e8eee6; --paper:#fbfaf6; --muted:#59675d; --line:#d8e0d6; --accent:#e8b18b; }
* { box-sizing:border-box; }
html { scroll-behavior:smooth; }
body { margin:0; background:var(--paper); color:var(--ink); font-family:"Noto Sans JP","Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif; font-size:18px; line-height:1.95; overflow-wrap:anywhere; }
a { color:var(--green); text-underline-offset:.22em; }
a:hover { color:#976039; }
img,video { max-width:100%; height:auto; display:block; }
button,input { font:inherit; }
button,a { -webkit-tap-highlight-color:transparent; }
:focus-visible { outline:3px solid #b36531; outline-offset:4px; }
.skip { position:absolute; left:12px; top:-80px; background:white; padding:8px; z-index:20; }
.skip:focus { top:4px; }
.header { border-bottom:1px solid var(--line); background:rgba(251,250,246,.96); position:relative; z-index:10; }
.header-inner { max-width:1240px; padding:22px 32px; margin:auto; display:flex; gap:30px; align-items:center; justify-content:space-between; }
.brand { text-decoration:none; display:flex; align-items:center; gap:12px; font-size:21px; font-weight:800; letter-spacing:.04em; line-height:1.4; }
.brand img { width:42px; height:42px; border-radius:50%; }
.brand small { font-size:11px; display:block; letter-spacing:.15em; color:var(--muted); margin-top:4px; }
.nav { display:flex; align-items:center; gap:26px; font-size:14px; font-weight:700; }
.nav a { text-decoration:none; }
.menu-button { display:none; background:none; border:1px solid var(--line); padding:6px 10px; border-radius:7px; color:var(--ink); }
.wrap { max-width:1180px; margin:auto; padding:0 32px; }
.hero { display:grid; grid-template-columns:.85fr 1.15fr; align-items:center; gap:45px; padding:60px 0 65px; }
.eyebrow { color:var(--green); font-size:12px; font-weight:800; letter-spacing:.17em; text-transform:uppercase; }
h1,h2,h3 { line-height:1.5; letter-spacing:.025em; }
h1 { font-size:clamp(30px,3.1vw,46px); margin:15px 0 24px; }
.hero p { color:var(--muted); font-size:16px; }
.hero img { width:100%; border-radius:3px 60px 3px 3px; }
.button { display:inline-block; padding:10px 24px; background:var(--green); color:white; border-radius:3px; text-decoration:none; font-size:15px; margin-top:15px; }
.button:hover { background:#326e56; color:white; }
.intro-strip { padding:28px 32px; background:var(--sage); border-left:4px solid var(--green); font-size:16px; }
.section { padding:48px 0; }
.section-head { display:flex; gap:20px; align-items:end; justify-content:space-between; margin-bottom:25px; }
.section-head h2 { margin:0; font-size:27px; }
.section-head a { font-size:14px; white-space:nowrap; }
.grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:28px; }
.card { min-width:0; }
.card a { display:block; text-decoration:none; }
.card img { width:100%; aspect-ratio:3/2; object-fit:cover; border-radius:3px; transition:transform .4s; }
.card a:hover img { transform:translateY(-4px); }
.card h3 { margin:8px 0; font-size:18px; }
.card p { margin:0; font-size:14px; color:var(--muted); line-height:1.8; }
.tag { color:var(--muted); font-size:11px; letter-spacing:.08em; font-weight:700; margin-top:10px; display:inline-block; }
.ad { text-align:center; margin:42px auto; padding:10px 0; max-width:1080px; border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.ad-label { display:block; color:#69756b; font-size:10px; letter-spacing:.1em; margin-bottom:8px; }
.adsbygoogle { display:block; min-height:100px; }
.breadcrumb { padding:24px 0; font-size:12px; color:var(--muted); }
.article-layout { display:grid; grid-template-columns:minmax(0,790px) 230px; gap:55px; }
.article-head h1 { font-size:clamp(29px,3.2vw,40px); margin-top:10px; }
.lead { color:var(--muted); }
.byline { font-size:12px; color:var(--muted); margin:20px 0; }
.article-cover { width:100%; border-radius:5px; margin:25px 0 35px; }
.prose h2 { font-size:26px; margin:48px 0 20px; padding-bottom:12px; border-bottom:2px solid var(--line); scroll-margin-top:20px; }
.prose h3 { font-size:21px; margin-top:30px; }
.prose p { margin:1.2em 0; }
.prose li { margin:.4em 0; }
.prose table { border-collapse:collapse; width:100%; font-size:15px; }
.prose td,.prose th { border:1px solid var(--line); padding:10px; text-align:left; }
.toc { background:var(--sage); padding:22px 25px; font-size:15px; border-radius:4px; }
.toc strong { display:block; margin-bottom:8px; }
.toc ol { padding-left:22px; margin:0; }
.aside { font-size:14px; padding-top:22px; }
.aside-box { border-top:3px solid var(--green); padding:18px 0; margin-bottom:25px; }
.aside h2 { font-size:17px; }
.aside ul { padding-left:18px; }
.sources { background:#f0f2eb; padding:22px; font-size:14px; margin-top:40px; }
.sources h2 { font-size:19px; margin-top:0; }
.photo { margin:35px 0; }
.photo img { max-height:500px; width:auto; margin:auto; }
figcaption { color:var(--muted); font-size:12px; margin-top:10px; text-align:center; }
.video-wrap { position:relative; background:#122c21; border-radius:5px; overflow:hidden; }
.video-wrap video { width:100%; }
.video-title { position:absolute; left:0; right:0; top:0; background:linear-gradient(#000b,transparent); padding:16px; color:white; font-weight:700; pointer-events:none; font-size:16px; }
.video-wrap.played .video-title { display:none; }
.footer { background:#1e4233; color:#eaf0e7; margin-top:55px; padding:45px 0; font-size:13px; }
.footer a { color:#eaf0e7; }
.footer-links { display:flex; flex-wrap:wrap; gap:22px; }
.footer p { color:#c5d6c6; max-width:800px; }
.search { width:100%; border:1px solid var(--line); border-radius:3px; padding:13px 16px; background:white; margin:10px 0 28px; }
.reveal { animation:soft-in .75s both; }
@keyframes soft-in { from { opacity:0; transform:translateY(15px); } to { opacity:1; transform:none; } }
.js .scroll-reveal { opacity:0; transform:translateY(14px); transition:opacity .6s,transform .6s; }
.js .scroll-reveal.visible { opacity:1; transform:none; }
@media(max-width:960px) { .article-layout { grid-template-columns:minmax(0,1fr); } .aside { display:none; } .hero { gap:25px; } .nav { gap:15px; } }
@media(max-width:680px) { body { font-size:17px; line-height:1.95; } .wrap { padding:0 20px; } .header-inner { padding:16px 18px; gap:10px; } .brand { font-size:17px; gap:8px; } .brand small { font-size:9px; } .brand img { width:34px; height:34px; } .menu-button { display:block; font-size:13px; line-height:1.5; } .menu-bars { font-size:24px; line-height:1; display:block; } .nav { display:none; position:absolute; left:0; right:0; top:100%; flex-direction:column; align-items:stretch; background:var(--paper); padding:20px; box-shadow:0 12px 18px #14342115; } .nav.open { display:flex; } .nav a { padding:9px 12px; border-bottom:1px solid var(--line); } .hero { grid-template-columns:1fr; padding:30px 0 35px; gap:24px; } .hero h1 { font-size:32px; } .hero img { border-radius:3px 32px 3px 3px; } .hero p { font-size:15px; } .intro-strip { padding:21px; font-size:15px; } .section { padding:35px 0; } .section-head h2 { font-size:23px; } .section-head { align-items:center; } .section-head a { font-size:12px; } .grid { grid-template-columns:repeat(2,minmax(0,1fr)); gap:22px 14px; } .card h3 { font-size:14px; line-height:1.65; } .card p { display:none; } .card .tag { font-size:10px; } .article-head h1 { font-size:29px; } .prose h2 { font-size:23px; } .prose h3 { font-size:20px; } .breadcrumb { padding:18px 0; } .video-title { font-size:13px; padding:10px; } .ad { margin:30px 0; } }
@media(prefers-reduced-motion:reduce) { html { scroll-behavior:auto; } *,*:before,*:after { animation:none!important; transition:none!important; } .js .scroll-reveal { opacity:1; transform:none; } }