:root{
  --amber:#d97706; --amber-d:#b45309; --amber-l:#fef3c7;
  --navy:#1e293b; --navy-l:#334155;
  --ink:#1f2937; --muted:#64748b; --line:#e5e7eb;
  --bg:#f8fafc; --card:#ffffff;
  --maxw:960px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Hiragino Kaku Gothic ProN","Yu Gothic","Meiryo",system-ui,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.8;font-size:16px}
a{color:var(--amber-d)}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:var(--navy);color:#fff;
  box-shadow:0 2px 10px rgba(0,0,0,.15)}
.header-inner{max-width:var(--maxw);margin:0 auto;padding:10px 20px;display:flex;align-items:center;
  justify-content:space-between;gap:12px}
.brand{display:flex;align-items:center;gap:12px;color:#fff;text-decoration:none}
.brand-icon{font-size:30px;line-height:1}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-title{font-size:19px;font-weight:800;letter-spacing:.02em}
.brand-sub{font-size:12px;color:#fcd34d;font-weight:600}
.site-nav{display:flex;flex-wrap:wrap;gap:2px}
.site-nav a{color:#e2e8f0;text-decoration:none;font-size:13.5px;font-weight:600;
  padding:6px 10px;border-radius:6px;white-space:nowrap}
.site-nav a:hover{background:rgba(255,255,255,.12)}
.site-nav a.active{background:var(--amber);color:#fff}
.nav-toggle{display:none;background:none;border:1px solid rgba(255,255,255,.4);color:#fff;
  font-size:20px;border-radius:6px;padding:2px 10px;cursor:pointer}

/* hero */
.hero{background:linear-gradient(135deg,#b45309,#d97706 60%,#f59e0b);color:#fff;
  padding:46px 20px;text-align:center}
.hero .container{max-width:760px}
.hero .eyebrow{font-size:13px;letter-spacing:.15em;font-weight:700;opacity:.9}
.hero h1{font-size:30px;margin:.4em 0 .3em;font-weight:800;line-height:1.35}
.hero .lead{font-size:15px;opacity:.95;margin:0}
.hero .meta{margin-top:16px;font-size:13px;opacity:.9}
.page-hero{background:var(--navy);color:#fff;padding:30px 20px}
.page-hero .container{max-width:var(--maxw)}
.page-hero .eyebrow{color:#fcd34d;font-size:13px;font-weight:700;letter-spacing:.08em}
.page-hero h1{margin:.2em 0 0;font-size:25px;font-weight:800}
.page-hero p{margin:.5em 0 0;font-size:14px;color:#cbd5e1}

/* main */
main.container{padding-top:34px;padding-bottom:50px}
section{margin-bottom:14px;background:var(--card);border:1px solid var(--line);
  border-radius:12px;padding:22px 26px;box-shadow:0 1px 3px rgba(0,0,0,.03)}
h2{font-size:21px;font-weight:800;color:var(--navy);margin:.2em 0 .7em;
  padding-left:12px;border-left:5px solid var(--amber);line-height:1.4}
h3{font-size:16.5px;font-weight:700;color:var(--amber-d);margin:1.3em 0 .5em}
p{margin:.6em 0}
ul{margin:.6em 0;padding-left:1.3em}
li{margin:.35em 0}
.src{font-size:12.5px;color:var(--muted);background:#f1f5f9;border-radius:6px;
  padding:6px 12px;margin:.7em 0;border-left:3px solid var(--muted)}
.src a{word-break:break-all}

/* tables */
.table-wrap{overflow-x:auto;margin:1em 0;-webkit-overflow-scrolling:touch}
table{border-collapse:collapse;width:100%;font-size:14px;min-width:460px}
th,td{border:1px solid var(--line);padding:9px 12px;text-align:left;vertical-align:top}
th{background:var(--navy);color:#fff;font-weight:700}
tr:nth-child(even) td{background:#fafafa}
table a{word-break:break-all}
.cases td:nth-child(3){white-space:nowrap;font-weight:700;text-align:center}

/* badges for case/future within tables handled via CSS text */
.callout{border-radius:10px;padding:14px 18px;margin:1em 0;font-size:14.5px}
.callout.info{background:#eff6ff;border-left:4px solid #3b82f6}
.callout.warn{background:#fef2f2;border-left:4px solid #ef4444}
.callout.tip{background:var(--amber-l);border-left:4px solid var(--amber)}

.figure-note{background:#f1f5f9;border:1px dashed #94a3b8;border-radius:10px;
  padding:12px 16px;margin:1em 0;font-size:13.5px;color:var(--navy-l);font-weight:600}
.figure-note span{font-size:16px}
.fig{margin:1.2em 0;text-align:center}
.fig img{max-width:100%;height:auto;border:1px solid var(--line);border-radius:10px;box-shadow:0 2px 10px rgba(0,0,0,.06)}
.fig figcaption{margin-top:8px;font-size:13px;color:var(--muted);font-weight:600}

/* cards grid */
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;margin:1.2em 0}
.nav-card{display:flex;gap:12px;align-items:flex-start;background:var(--card);
  border:1px solid var(--line);border-radius:12px;padding:16px 18px;text-decoration:none;
  color:var(--ink);transition:.15s;box-shadow:0 1px 3px rgba(0,0,0,.04)}
.nav-card:hover{border-color:var(--amber);transform:translateY(-2px);box-shadow:0 6px 16px rgba(217,119,6,.15)}
.card-icon{font-size:26px;line-height:1.1}
.card-body{display:flex;flex-direction:column}
.card-title{font-weight:800;color:var(--navy);font-size:15.5px}
.card-desc{font-size:13px;color:var(--muted);margin-top:2px}

/* toc */
.toc{list-style:none;padding:0;margin:0;counter-reset:toc}
.toc li{margin:0;border-bottom:1px dashed var(--line)}
.toc li:last-child{border-bottom:none}
.toc a{display:block;padding:9px 4px;text-decoration:none;color:var(--ink);font-weight:600}
.toc a:hover{color:var(--amber-d)}

/* pager */
.pager{display:flex;justify-content:space-between;gap:12px;margin-top:22px;flex-wrap:wrap}
.pager a{flex:1;min-width:200px;text-decoration:none;background:var(--card);border:1px solid var(--line);
  border-radius:10px;padding:12px 16px;color:var(--navy);font-weight:700}
.pager a:hover{border-color:var(--amber)}
.pager .next{text-align:right}
.pager small{display:block;font-size:11px;color:var(--muted);font-weight:600}

/* footer */
.site-footer{background:var(--navy);color:#cbd5e1;padding:26px 20px;margin-top:20px}
.copyright{font-weight:700;color:#fff;margin:0 0 8px;font-size:14px}
.foot-note{font-size:12px;color:#94a3b8;margin:0;line-height:1.7}

@media(max-width:760px){
  .nav-toggle{display:block}
  .site-nav{display:none;flex-direction:column;width:100%;margin-top:10px}
  body.nav-open .site-nav{display:flex}
  .header-inner{flex-wrap:wrap}
  .site-nav a{width:100%}
  .hero h1{font-size:24px}
  section{padding:18px 16px}
  h2{font-size:19px}
}

.badge{display:inline-block;padding:2px 10px;border-radius:999px;font-size:12px;font-weight:800;white-space:nowrap}
.badge.case{background:#dcfce7;color:#166534;border:1px solid #86efac}
.badge.future{background:#fef3c7;color:#92400e;border:1px solid #fcd34d}
.cases td:nth-child(3){white-space:nowrap;text-align:center}