:root{
  --paper:#f4f0e6;--paper-2:#ece6d6;--ink:#1c211d;--ink-soft:#4a534b;
  --pine:#1c5847;--pine-deep:#123c30;--gold:#b8893a;--clay:#b03a23;
  --safe:#2f7d52;--line:#d8d0bd;--shadow:rgba(18,40,32,.14);
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:"Noto Sans JP",sans-serif;background:var(--paper);color:var(--ink);line-height:1.85;font-size:16px;-webkit-font-smoothing:antialiased;position:relative;overflow-x:hidden}
body::before{content:"";position:fixed;inset:0;pointer-events:none;z-index:1;opacity:.04;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
.serif{font-family:"Noto Serif JP",serif}
.wrap{max-width:720px;margin:0 auto;padding:0 18px;position:relative;z-index:2}
a{color:inherit}

/* header */
.top{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:18px 0 10px}
.brand{font-family:"Noto Serif JP",serif;font-weight:900;font-size:1.02rem;letter-spacing:.02em;display:flex;align-items:center;gap:9px;text-decoration:none;color:var(--ink)}
.brand .mk{width:26px;height:26px;border-radius:8px;background:var(--pine);color:var(--paper);display:grid;place-items:center;font-size:14px}
.brand-tag{font-family:"Noto Sans JP",sans-serif;font-size:10.5px;font-weight:600;color:var(--ink-soft);letter-spacing:.04em;border-left:1px solid var(--line);padding-left:9px;margin-left:2px;white-space:nowrap}
@media(max-width:520px){.brand-tag{display:none}}
.top-actions{display:flex;align-items:center;gap:14px}
.main-nav{display:flex;align-items:center;gap:12px;font-size:12.5px;font-weight:700;color:var(--ink-soft)}
.main-nav a{text-decoration:none}
.main-nav a:hover{color:var(--pine)}
@media(max-width:680px){
  .top{align-items:flex-start;flex-direction:column}
  .top-actions{width:100%;justify-content:space-between}
  .main-nav{gap:10px;overflow-x:auto;max-width:100%;padding-bottom:2px}
}

/* buttons */
.cta{display:inline-flex;align-items:center;gap:12px;background:var(--pine);color:var(--paper);font-weight:700;font-size:16px;padding:16px 26px;border-radius:14px;text-decoration:none;box-shadow:0 14px 30px -14px rgba(18,60,48,.7);transition:transform .15s,box-shadow .15s}
.cta:hover{transform:translateY(-2px);box-shadow:0 18px 36px -14px rgba(18,60,48,.8)}
.cta .arr{font-size:18px}
.cta-sub{font-size:12.5px;color:var(--ink-soft);margin-top:11px}

/* article */
.crumbs{font-size:12px;color:var(--ink-soft);margin:14px 0 26px}
.crumbs a{font-weight:700;text-decoration:none;color:var(--pine)}
.post{padding-bottom:10px}
.post h1{font-family:"Noto Serif JP",serif;font-weight:900;font-size:clamp(1.5rem,4.6vw,2.1rem);line-height:1.5;letter-spacing:.01em;margin:12px 0 18px}
.post h2{font-family:"Noto Serif JP",serif;font-weight:700;font-size:1.3rem;line-height:1.55;margin:44px 0 14px;padding-left:14px;border-left:3px solid var(--pine)}
.post h3{font-size:1.05rem;font-weight:700;line-height:1.6;margin:28px 0 10px}
.post p{margin:0 0 16px;color:var(--ink-soft)}
.post p b,.post li b{color:var(--ink)}
.post ul,.post ol{margin:0 0 20px 1.2em;color:var(--ink-soft)}
.post li{margin:7px 0;padding-left:2px}
.eyecatch{margin:22px 0 24px}
.eyecatch img{display:block;width:100%;height:auto;aspect-ratio:1200/630;border-radius:18px;border:1px solid var(--line);box-shadow:0 18px 42px -34px rgba(18,40,32,.7);background:#fbf9f2}
.lead{font-size:16.5px;color:var(--ink-soft);margin-bottom:26px}
.post-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:12.5px;color:var(--ink-soft);font-weight:700}
.post-meta .tag{display:inline-flex;align-items:center;border-radius:999px;padding:5px 11px;font-size:12px;line-height:1;color:#fff}
.post-meta .pre{background:var(--pine)}
.post-meta .post-tag{background:var(--gold);color:#fff}
.post-meta .all{background:var(--ink-soft)}

blockquote.example{background:#fbf9f2;border-left:4px solid var(--gold);border-radius:0 14px 14px 0;padding:18px 18px 18px 20px;margin:22px 0;color:var(--ink);box-shadow:0 10px 28px -25px var(--shadow)}
.example-label{display:inline-flex;font-size:12px;font-weight:700;color:var(--gold);letter-spacing:.08em;margin-bottom:8px}
.note{background:#fbf9f2;border:1px solid var(--line);border-radius:14px;padding:16px 18px;margin:22px 0;color:var(--ink-soft)}
.alert{background:#f9ece7;border:1.5px solid var(--clay);border-radius:14px;padding:18px;margin:22px 0;color:#7a2814;font-weight:700}
.alert p{margin:7px 0 0;color:#7a2814;font-weight:500}
.check-list{list-style:none!important;margin-left:0!important}
.check-list li{position:relative;padding-left:28px}
.check-list li::before{content:"✓";position:absolute;left:0;top:0;color:var(--safe);font-weight:900}
table.simple{width:100%;border-collapse:collapse;margin:22px 0;background:#fbf9f2;border:1px solid var(--line);border-radius:14px;overflow:hidden;display:table}
table.simple th,table.simple td{padding:12px 10px;border-bottom:1px solid var(--line);font-size:13px;text-align:left;vertical-align:top}
table.simple th{background:var(--paper-2);color:var(--ink);font-weight:700}
table.simple tr:last-child td{border-bottom:none}
table.simple td:last-child{color:var(--ink-soft)}

.cta-box{background:var(--pine-deep);color:#eef0e9;border-radius:18px;padding:30px 22px;margin:38px 0;text-align:center;box-shadow:0 18px 40px -30px rgba(18,40,32,.7)}
.cta-box .cta-h{font-family:"Noto Serif JP",serif;font-weight:900;font-size:1.35rem;line-height:1.45;margin-bottom:10px;color:#fff}
.cta-box p{color:#dce5db;max-width:34em;margin:0 auto 20px}
.cta-box .cta{background:var(--paper);color:var(--pine-deep);box-shadow:0 14px 30px -14px rgba(0,0,0,.45)}
.cta-box .cta:hover{box-shadow:0 18px 36px -14px rgba(0,0,0,.55)}
.cta-box .cta-sub{color:#cdd6cd}

.related{margin-top:44px}
.related h2{margin-top:0}
.related ul,.article-list{list-style:none;margin:0;display:grid;gap:12px}
.related li,.article-card{margin:0;padding:0}
.related a,.article-card a{display:block;background:#fbf9f2;border:1px solid var(--line);border-radius:14px;padding:16px 18px;text-decoration:none;box-shadow:0 10px 28px -25px var(--shadow);transition:border-color .15s,transform .15s}
.related a:hover,.article-card a:hover{border-color:var(--pine);transform:translateY(-1px)}
.card-title{display:block;font-weight:700;color:var(--ink);line-height:1.6;margin:6px 0 3px}
.card-desc{display:block;font-size:13.5px;color:var(--ink-soft);line-height:1.7}
.pill{display:inline-flex;align-items:center;border-radius:999px;padding:4px 10px;font-size:11.5px;font-weight:700;line-height:1;color:#fff;background:var(--pine)}
.pill.post-tag{background:var(--gold)}
.pill.all{background:var(--ink-soft)}

.list-head{padding:38px 0 18px}
.list-head h1{font-family:"Noto Serif JP",serif;font-weight:900;font-size:clamp(1.7rem,5.2vw,2.35rem);line-height:1.45;margin-bottom:14px}
.article-section{margin-top:34px}
.article-section h2{font-family:"Noto Serif JP",serif;font-weight:700;font-size:1.35rem;margin-bottom:14px;padding-left:14px;border-left:3px solid var(--pine)}
.featured-card a{padding:22px 20px;border-color:var(--pine);background:linear-gradient(180deg,#fffdf7,#fbf9f2)}
.featured-card .card-title{font-family:"Noto Serif JP",serif;font-size:1.2rem;font-weight:900}

footer{margin-top:84px;padding:30px 0 64px;border-top:1px solid var(--line);font-size:12px;color:var(--ink-soft)}
footer .flinks{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:12px;font-weight:700;color:var(--pine)}
footer .flinks a{text-decoration:none}
footer .fnote{margin-bottom:6px}
footer b{color:var(--ink)}
.sources{font-size:12.5px;color:var(--ink-soft);line-height:1.8}
.sources a{color:var(--pine);font-weight:700}

@media(max-width:680px){
  .post h2,.article-section h2{margin-top:36px}
  .cta{width:100%;justify-content:center;text-align:center}
  .cta-box{padding:26px 18px}
}
@media(max-width:520px){
  .wrap{padding:0 16px}
  .post h1{font-size:1.45rem}
  .lead{font-size:15.5px}
  table.simple th,table.simple td{font-size:12.5px;padding:10px 8px}
  .related a,.article-card a{padding:15px 14px}
  .cta-box .cta-h{font-size:1.2rem}
}