:root{--bg:#F7F6F2;--paper:#FFFEFB;--paper-soft:#FBF7F0;--line:#E7E0D6;--ink:#3F3834;--body:#5B5550;--muted:#8B837B;--lavender:#8A7FA6;--lavender-deep:#6F638B;--lavender-soft:#EDE7F2;--blue:#DCE6F2;--gold:#C9A86A;--gold-soft:#F3E8D3;--sage:#A6C2B2;--shadow:0 18px 48px rgba(83,68,55,.10);--shadow-sm:0 8px 24px rgba(83,68,55,.08)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:radial-gradient(circle at 8% 8%,rgba(220,230,242,.55),transparent 28rem),radial-gradient(circle at 92% 18%,rgba(237,216,230,.50),transparent 30rem),var(--bg);color:var(--body);font-family:"Noto Sans JP",system-ui,sans-serif;line-height:1.85;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.wrap{width:min(1120px,calc(100% - 40px));margin:0 auto}
.serif,h1,h2,h3{font-family:"Noto Serif JP","Yu Mincho",serif;color:var(--ink)}
.num{font-family:"Montserrat","Noto Sans JP",sans-serif}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,254,251,.92);border-bottom:1px solid var(--line);backdrop-filter:blur(16px)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 0}
.brand{display:flex;align-items:center;min-width:max-content}
.brand-logo{display:block;width:260px;height:54px;max-width:100%;object-fit:cover;object-position:center}
.nav{display:flex;gap:10px;flex-wrap:wrap}
.nav a,.btn{display:inline-flex;align-items:center;justify-content:center;min-height:40px;border:1px solid var(--line);border-radius:999px;background:#fff;padding:0 14px;font-size:13px;font-weight:700}
.nav a:hover,.btn:hover{background:var(--lavender-soft);border-color:var(--lavender);color:var(--lavender-deep)}
.btn.primary{background:linear-gradient(135deg,var(--lavender),#A28EB9);color:#fff;border-color:transparent}
main{padding:34px 0 64px}
.hero{border:1px solid var(--line);border-radius:30px;background:linear-gradient(135deg,rgba(255,254,251,.96),rgba(251,247,240,.9));box-shadow:var(--shadow);padding:42px;position:relative;overflow:hidden}
.hero:after{content:"";position:absolute;right:-70px;top:-80px;width:260px;height:260px;border-radius:50%;border:1px solid rgba(201,168,106,.35);background:radial-gradient(circle,rgba(243,232,211,.8),transparent 68%)}
.eyebrow{color:var(--gold);font-size:12px;font-weight:700;letter-spacing:.12em}
.hero h1{font-size:clamp(30px,5vw,50px);line-height:1.35;margin:14px 0;position:relative;z-index:1}
.lead{max-width:820px;margin:0;color:var(--body);position:relative;z-index:1}
.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px;position:relative;z-index:1}
.layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px;margin-top:28px;align-items:start}
.article,.side{display:grid;gap:18px;min-width:0}
.panel,.toc,.card,.note-box{border:1px solid var(--line);border-radius:22px;background:rgba(255,254,251,.96);box-shadow:var(--shadow-sm)}
.panel{padding:28px}
.panel h2{font-size:28px;line-height:1.45;margin:0 0 14px}
.panel h3{font-size:20px;margin:22px 0 8px}
.panel p{margin:0 0 14px}
.panel ul{margin:0 0 14px;padding-left:1.2em}
.panel li{margin:0 0 6px}
.editorial-figure{margin:0 0 18px;border-radius:18px;overflow:hidden;background:#fff;border:1px solid var(--line)}
.editorial-figure img{width:100%;height:clamp(220px,45vw,500px);object-fit:cover}
.hero-keyvisual{position:relative;z-index:1;margin:20px 0 18px}.hero-keyvisual img{height:auto;aspect-ratio:16/9;object-fit:cover}.article-keyvisual{margin-top:0}.article-keyvisual img{height:auto;aspect-ratio:16/9;object-fit:cover}.article-keyvisual+.editorial-figure{margin-top:18px}
.editorial-figure figcaption{padding:9px 12px;color:var(--muted);font-size:11px;line-height:1.65;background:var(--paper-soft)}
.visual-guide{margin:18px 0;display:grid;grid-template-columns:repeat(3,1fr);gap:8px;align-items:stretch}
.visual-step{position:relative;min-height:96px;padding:14px 12px;border:1px solid var(--line);border-radius:14px;background:var(--paper-soft);text-align:center;font-size:12px}
.visual-step b{display:block;margin-bottom:4px;color:var(--ink);font-size:14px}
.visual-step:not(:last-child):after{content:"→";position:absolute;right:-13px;top:35%;z-index:2;width:18px;height:18px;border-radius:50%;background:#fff;color:var(--gold);font-weight:700;line-height:18px}
.figure-note{margin:-8px 0 14px;color:var(--muted);font-size:11px}
.toc{padding:20px;position:sticky;top:86px}
.toc h2{font-size:16px;margin:0 0 10px}
.toc a{display:block;border-top:1px solid var(--line);padding:10px 0;color:var(--body);font-size:13px;font-weight:700}
.toc a:hover{color:var(--lavender-deep)}
.note-box{padding:18px;background:var(--paper-soft)}
.note-box h3{font-size:18px;margin:0 0 8px}
.note-box p{margin:0;color:var(--muted);font-size:13px}
.tag-row{display:flex;gap:6px;flex-wrap:wrap;margin-top:12px}
.tag{display:inline-flex;align-items:center;border:1px solid var(--line);border-radius:999px;background:var(--paper-soft);padding:4px 8px;font-size:11px;color:var(--muted)}
.card{display:grid;gap:10px;padding:20px}
.card h2,.card h3{font-size:19px;margin:0}
.card p{margin:0;color:var(--muted);font-size:14px}
.card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:22px}
.card-link{border:1px solid var(--line);border-radius:20px;background:#fff;padding:20px;box-shadow:var(--shadow-sm);overflow:hidden}
.card-link.has-image{padding:0}
.card-thumb{width:100%;height:clamp(170px,28vw,260px);object-fit:cover;background:var(--paper-soft)}
.card-body{padding:18px 20px 20px}
.card-link h2,.card-link h3{font-size:20px;margin:0 0 8px}
.card-link p{margin:0;color:var(--muted);font-size:14px}
.related-heading{margin:6px 0 -4px;font-size:24px}
.related-card{display:block;border:1px solid var(--line);border-radius:16px;background:var(--paper-soft);padding:16px;transition:.2s ease}
.related-card:hover{transform:translateY(-2px);border-color:var(--lavender);background:#fff}
.related-card b{display:block;color:var(--ink);font-family:"Noto Serif JP","Yu Mincho",serif;font-size:17px}
.related-card span{display:block;margin-top:4px;color:var(--muted);font-size:12px;line-height:1.6}
.meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px;color:var(--muted);font-size:12px}
.pill{display:inline-flex;border:1px solid var(--line);border-radius:999px;background:var(--paper-soft);padding:3px 8px;color:var(--lavender-deep);font-weight:700}
details{border:1px solid var(--line);border-radius:16px;background:#fff;padding:14px 16px}
summary{cursor:pointer;font-weight:700;color:var(--ink)}
details p{margin:10px 0 0;color:var(--muted);font-size:14px}
.site-footer{padding:34px 0 28px;border-top:1px solid var(--line);background:rgba(255,254,251,.84)}
.footer-note{margin:0;color:var(--muted);font-size:12px}
.stone-footer-cta{padding:42px 0;background:linear-gradient(135deg,#F3EEFA,#FBF7F0)}
.stone-footer-card{display:grid;grid-template-columns:180px 1fr auto;gap:24px;align-items:center;overflow:hidden;border:1px solid #DED4EF;border-radius:26px;background:#fff;padding:20px 24px;box-shadow:var(--shadow)}
.stone-footer-image{width:180px;aspect-ratio:16/10;border-radius:18px;object-fit:cover}
.stone-footer-copy small{display:block;margin-bottom:5px;color:var(--gold);font-weight:700;letter-spacing:.1em}
.stone-footer-copy h2{margin:0 0 7px;font-size:24px;line-height:1.45}
.stone-footer-copy p{margin:0;color:var(--muted);font-size:13px;line-height:1.75}
.stone-footer-button{display:inline-flex;min-height:48px;align-items:center;justify-content:center;white-space:nowrap;border-radius:999px;background:var(--lavender);color:#fff;padding:0 20px;font-size:13px;font-weight:700;box-shadow:0 8px 20px rgba(111,99,139,.22)}
.stone-footer-button:after{content:"›";margin-left:9px;font-size:19px}
.stone-footer-button:hover{background:var(--lavender-deep)}
.number-jump{display:flex;flex-wrap:wrap;gap:9px;margin:18px 0 4px}
.number-jump a{display:inline-flex;min-width:64px;min-height:42px;align-items:center;justify-content:center;border:1px solid #ddd4e8;border-radius:999px;background:#fff;color:var(--lavender-deep);font-family:Montserrat,sans-serif;font-weight:700;box-shadow:0 4px 12px rgba(73,61,91,.06)}
.number-jump a:hover{border-color:var(--lavender);background:#f6f2fb}
.number-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:18px}
.number-card{scroll-margin-top:20px;border:1px solid #e5ddec;border-radius:18px;background:linear-gradient(145deg,#fff,#faf8fc);padding:17px}
.number-card h3{display:flex;align-items:baseline;gap:10px;margin:0 0 8px;font-size:18px}
.number-card h3 .number{color:var(--lavender-deep);font-family:Montserrat,sans-serif;font-size:24px;letter-spacing:.04em}
.number-card p{margin:0;color:var(--muted);font-size:13px;line-height:1.8}
.meaning-table{width:100%;border-collapse:separate;border-spacing:0;overflow:hidden;border:1px solid var(--line);border-radius:16px;margin-top:18px}
.meaning-table th,.meaning-table td{border-bottom:1px solid var(--line);padding:13px 14px;text-align:left;vertical-align:top;font-size:13px;line-height:1.7}
.meaning-table th{width:86px;background:#f6f2fa;color:var(--lavender-deep);font-family:Montserrat,sans-serif;font-size:18px}
.meaning-table tr:last-child th,.meaning-table tr:last-child td{border-bottom:0}
@media(max-width:920px){.layout{grid-template-columns:1fr}.toc{position:static}.card-grid{grid-template-columns:1fr}}
@media(max-width:760px){.header-inner{align-items:flex-start;flex-direction:column}.brand-logo{width:220px;height:46px}.hero{padding:28px}.panel{padding:18px}.nav a{font-size:12px}.editorial-figure{margin-inline:-18px;border-radius:0;border-inline:0}.visual-guide{grid-template-columns:1fr}.visual-step{min-height:0;text-align:left}.visual-step:not(:last-child):after{content:"↓";right:calc(50% - 9px);top:auto;bottom:-13px}.number-grid{grid-template-columns:1fr}.number-jump{gap:7px}.number-jump a{min-width:57px;min-height:40px;font-size:13px}.meaning-table th,.meaning-table td{padding:11px 10px}.meaning-table th{width:62px}.stone-footer-cta{padding:28px 0}.stone-footer-card{grid-template-columns:92px 1fr;gap:14px;border-radius:20px;padding:14px}.stone-footer-image{width:92px;height:92px;aspect-ratio:1}.stone-footer-copy h2{font-size:18px}.stone-footer-copy p{font-size:11px;line-height:1.6}.stone-footer-button{grid-column:1/-1;width:100%;min-height:46px}}
.sns-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.sns-card{padding:16px;border:1px solid var(--line);border-radius:16px;background:#fff}.sns-label{display:inline-block;padding:4px 9px;border-radius:999px;background:var(--paper-soft);font-weight:700;font-size:.82rem}.sns-card h3{margin:9px 0 5px}.sns-card a{color:var(--lavender-deep);font-weight:700}@media(max-width:700px){.sns-grid{grid-template-columns:1fr}}