:root{--bg:#fffaf3;--ink:#3a2f28;--muted:#7a6a5d;--line:#ecdcc8;--a:#e8734a;--a2:#3b8f8a;--card:#fff;--soft:#fdeee6;--warn:#fff3d6;--warnb:#e6c566}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.85 "Hiragino Sans","Noto Sans JP","Yu Gothic",Meiryo,sans-serif}
.wrap{max-width:860px;margin:0 auto;padding:0 16px}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:#fff;padding:6px;z-index:9}
header.site{background:#fff;border-bottom:3px solid var(--a)}
header.site .wrap{display:flex;flex-wrap:wrap;gap:6px 18px;align-items:center;justify-content:space-between;padding:12px 16px}
.brand{font-weight:800;color:var(--ink);text-decoration:none;font-size:17px;display:flex;align-items:center;gap:8px}
.brand i{width:22px;height:22px;border-radius:7px;background:var(--a);display:inline-block;position:relative}
.brand i:after{content:"";position:absolute;left:5px;top:6px;width:10px;height:10px;border-radius:50%;background:#fff;box-shadow:6px 0 0 -1px rgba(255,255,255,.65)}
nav a{margin-right:14px;color:var(--ink);font-size:14px;text-decoration:none;border-bottom:1px dotted var(--muted)}
h1{font-size:26px;line-height:1.45;margin:.3em 0 .5em}
h2{font-size:21px;margin:2.2em 0 .6em;padding-left:12px;border-left:6px solid var(--a)}
h3{font-size:17px;margin:1.4em 0 .4em}
.eyebrow{display:inline-block;background:var(--soft);color:#b5502a;border-radius:20px;padding:2px 12px;font-size:13px;font-weight:700;margin:22px 0 0}
.hero{padding:10px 0 4px}.hero-copy{color:var(--muted)}
.four{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin:18px 0}
.four div{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:10px 8px;text-align:center}
.four b{display:block;color:var(--a);font-size:15px}.four span{font-size:12px;color:var(--muted)}
.lead{font-size:17px;color:#54463c}
.crumb{font-size:13px;color:var(--muted);margin-top:14px}.crumb a{color:var(--muted)}
ul.meta{list-style:none;padding:0;margin:0 0 14px;display:flex;flex-wrap:wrap;gap:6px 16px;font-size:13px;color:var(--muted)}
ul.meta b{margin-right:6px;color:var(--a2)}
.answer{background:#e9f5f4;border:1px solid #b9dcd9;border-radius:14px;padding:14px 18px}
.answer p{margin:0 0 4px;font-weight:800;color:#26706b}.answer ul{margin:6px 0 0;padding-left:20px}
.notice{background:#fff;border:1px solid var(--line);border-radius:12px;padding:6px 16px;margin:14px 0}
.notice.warn{background:var(--warn);border-color:var(--warnb)}
.note{font-size:13px;color:var(--muted)}
.table-wrap{overflow-x:auto;max-width:100%;margin:12px 0;-webkit-overflow-scrolling:touch}
table{border-collapse:collapse;width:100%;min-width:560px;font-size:14px;background:#fff}
th,td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
thead th{background:var(--soft)}
.fig{margin:14px 0}.fig svg{width:100%;height:auto}.fig figcaption{font-size:13px;color:var(--muted);text-align:center}
ul.index{list-style:none;padding:0;display:grid;gap:12px}
ul.index a{display:grid;grid-template-columns:1fr auto;gap:2px 10px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 16px;text-decoration:none;color:var(--ink)}
ul.index small{grid-column:1;color:#b5502a;font-weight:700}ul.index h3{grid-column:1;margin:0;font-size:16px}ul.index span{grid-row:1/3;grid-column:2;align-self:center;color:var(--a);font-size:20px}
ol.rules{list-style:none;padding:0;counter-reset:r;display:grid;gap:10px}
ol.rules li{counter-increment:r;background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 14px 12px 52px;position:relative}
ol.rules li:before{content:counter(r);position:absolute;left:14px;top:12px;width:28px;height:28px;border-radius:50%;background:var(--a);color:#fff;text-align:center;line-height:28px;font-weight:700}
ol.rules b{display:block}
a{color:#1d6e69;word-break:break-word}
footer.site{margin-top:48px;background:#3a2f28;color:#f3e7d8;padding:22px 0;font-size:13px}
footer.site a{color:#ffd9c6}
.footer-risk{border-left:4px solid var(--a);padding-left:10px}
@media(max-width:560px){h1{font-size:22px}h2{font-size:19px}.four{grid-template-columns:repeat(2,minmax(0,1fr))}}
.nets{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}
.net{border-radius:12px;padding:0 0 10px;background:#fff;border:1px solid var(--line);overflow:hidden}
.net b{display:block;color:#fff;padding:6px 10px;margin-bottom:6px;font-size:15px}
.net span{display:block;padding:1px 12px;font-size:14px}.net .sm{font-size:12px;color:var(--muted)}
.n1 b{background:#e8734a}.n2 b{background:#3b8f8a}.n3 b{background:#6a6fc7}.n4 b{background:#c9506d}
.netnote{background:#fff8e1;border:1px solid #e6c566;border-radius:10px;padding:8px 12px;margin-top:10px;font-size:14px}
@media(max-width:560px){.nets{grid-template-columns:repeat(2,minmax(0,1fr))}}

.mcards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:8px 0}
.mc{background:#fff;border:2px solid var(--line);border-top:8px solid var(--a);border-radius:12px;padding:10px 12px 12px}
.mc.m2{border-top-color:var(--a2)}.mc.m3{border-top-color:#6a6fc7}.mc.m4{border-top-color:#c9506d}
.mc p{margin:0}.mk{font-size:13px;color:var(--muted);font-weight:700}
.mbig{font-size:22px;font-weight:800;line-height:1.35;margin:4px 0}
.mp{font-size:17px;font-weight:700}.ms{font-size:12px;color:var(--muted);margin-top:2px!important}
.mgap{background:#fff8e1;border:2px solid #e6c566;border-radius:12px;padding:10px 16px;margin-top:10px}
.mgap p{margin:4px 0}.mgap p:first-child{font-size:18px;line-height:1.6}
@media(max-width:700px){.mcards{grid-template-columns:repeat(2,minmax(0,1fr))}}
details.more{background:#fff;border:1px solid var(--line);border-radius:12px;padding:6px 14px;margin:12px 0}
details.more summary{cursor:pointer;font-weight:800;color:#1d6e69;padding:6px 0}