:root{--ink:#000;--bg:#eef2f9;--card:#fff;--main:#1e3a8a;--line:#1e293b}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"Hiragino Sans","Yu Gothic","Meiryo",sans-serif;font-weight:500;line-height:1.85;font-size:17px}
a{color:#0b3d91;font-weight:700}
.wrap{max-width:760px;margin:0 auto;padding:0 14px}
header{background:var(--main);color:#fff;padding:18px 0 14px;border-bottom:6px solid #fbbf24}
header .wrap{display:flex;align-items:center;gap:12px}
header img{width:52px;height:52px;border-radius:12px;flex:none}
header h1{margin:0;font-size:1.7rem;line-height:1.2;font-weight:800;color:#fff}
header p{margin:2px 0 0;font-size:.85rem;font-weight:600;color:#fff}
nav{background:#fff;border-bottom:2px solid var(--line)}
nav .wrap{display:flex;gap:6px 14px;font-size:.92rem;padding:8px 14px;flex-wrap:wrap}
nav a{text-decoration:none;color:#000;font-weight:800}
main{padding:18px 0 30px}
.lead,.box{background:var(--card);border:2px solid var(--line);border-radius:10px;padding:14px 16px;margin:0 0 16px}
.lead h2,.box h2{margin:0 0 6px;font-size:1.1rem;font-weight:800}
.tools{display:flex;gap:8px;margin:0 0 14px}
.tools input{flex:1;font-size:1rem;padding:10px;border:2px solid var(--line);border-radius:8px;color:#000;font-weight:600}
.count{font-weight:700;margin:0 0 10px}
details{background:#fff;border:2px solid var(--line);border-radius:10px;margin:0 0 12px;overflow:hidden}
summary{position:relative;cursor:pointer;list-style:none;padding:12px 44px 12px 14px;border-left:12px solid var(--c);background:var(--t);color:var(--c);font-weight:900;font-size:1.08rem;line-height:1.5}
summary::-webkit-details-marker{display:none}
summary small{display:block;color:#000;font-weight:700;font-size:.8rem}
summary::after{content:"＋";position:absolute;right:14px;top:10px;font-size:1.2rem;color:var(--c)}
details[open] summary::after{content:"－"}
.body{padding:12px 16px 16px;white-space:pre-wrap;word-break:break-word;color:#000;font-weight:500}
.src{display:block;margin-top:10px;font-size:.9rem}
.pager{display:flex;justify-content:center;gap:6px;flex-wrap:wrap;margin:16px 0}
.pager button{min-width:42px;padding:8px 10px;border:2px solid var(--line);background:#fff;border-radius:8px;font-weight:800;font-size:1rem;color:#000}
.pager button.on{background:var(--main);color:#fff}
form label{display:block;font-weight:800;margin:12px 0 4px}
form input,form textarea{width:100%;font:inherit;font-weight:600;padding:10px;border:2px solid var(--line);border-radius:8px;color:#000}
form textarea{min-height:180px}
form button{margin-top:14px;padding:12px 24px;background:var(--main);color:#fff;border:0;border-radius:8px;font-size:1.05rem;font-weight:800}
.warn{border:2px solid #b91c1c;background:#fef2f2;border-radius:8px;padding:10px 12px;font-weight:700}
footer{background:#0f172a;color:#fff;text-align:center;padding:20px 14px;font-weight:600}
footer a{color:#fde68a}
#counter{font-size:1.2rem;font-weight:800;color:#fde68a}
.kw{font-size:.85rem;font-weight:600}
h2.pg{font-size:1.4rem;border-bottom:4px solid var(--main);padding-bottom:4px}
.tools input::placeholder{color:#333;opacity:1}
.search label{display:block;font-weight:800;font-size:1.1rem}
.search p{margin:4px 0 8px;font-weight:600}
.search input{width:100%;font-size:1rem;padding:10px;border:2px solid var(--line);border-radius:8px;color:#000;font-weight:600}
.search input::placeholder{color:#333;opacity:1}
.hint{margin:0 0 10px;font-weight:700}
.chip{display:inline-block;background:var(--c);color:#fff;font-size:.72rem;padding:0 8px;border-radius:10px;margin-right:8px;vertical-align:2px;font-weight:800}
.lbl{display:block;width:fit-content;background:#334155;color:#fff;font-size:.72rem;font-weight:800;padding:0 8px;border-radius:10px;margin-bottom:6px}
.back{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin:24px 0 8px}
.btn{display:inline-block;padding:12px 22px;background:var(--main);color:#fff;text-decoration:none;border-radius:8px;font-weight:800}
html{scroll-behavior:smooth}
#pageinfo{font-size:.9rem;margin-left:10px;color:#000}

/* 左右の余白のスケッチ（背景に固定） */
body::before,body::after{content:"";position:fixed;top:150px;bottom:10px;width:250px;z-index:-1;pointer-events:none;background-repeat:no-repeat;background-size:contain;background-position:center top;display:none}
body::before{background-image:url(margin-left.svg);left:max(0px,calc(50% - 380px - 270px))}
body::after{background-image:url(margin-right.svg);right:max(0px,calc(50% - 380px - 270px))}
@media(min-width:1040px){body::before,body::after{display:block}}
.flow ol{margin:4px 0 0;padding-left:1.4em}.flow li{margin:4px 0}
.done{border-color:#047857;background:#ecfdf5}.done h2{color:#047857}
.btn.sub{background:#fff;color:var(--main);border:2px solid var(--main)}
form button:disabled{opacity:.6}
[hidden]{display:none!important}

/* ===== 自動生成ページ用（scripts/build.mjs） ===== */
summary h3{display:inline;margin:0;font-size:inherit;font-weight:inherit;color:inherit}
.more{display:inline-block;margin-top:12px;font-size:.95rem}
header .site{margin:0;font-size:1.7rem;line-height:1.2;font-weight:800}
header .site a{color:#fff;text-decoration:none}
nav .crumb{color:#334155;font-weight:700}
.post{background:#fff;border:2px solid var(--line);border-radius:10px;overflow:hidden;margin:0 0 16px}
.post-head{padding:14px 16px;border-left:12px solid var(--c);background:var(--t)}
.post-head h1{margin:6px 0 2px;color:var(--c);font-size:1.45rem;line-height:1.45;font-weight:900}
.post-head time{display:block;font-size:.85rem;font-weight:700}
.post-body{padding:6px 18px 16px;word-break:break-word}
.post-body h2{font-size:1.1rem;font-weight:800;margin:18px 0 6px;padding:2px 0 2px 10px;border-left:5px solid var(--c)}
.post-body p{margin:6px 0 10px}
.pn{background:none;border:0;display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:18px 0}
.pn a{display:block;background:#fff;border:2px solid var(--line);border-radius:10px;padding:10px 12px;text-decoration:none;color:#0b3d91;line-height:1.5}
.pn a small{display:block;color:#000;font-size:.8rem}
.pn-next{text-align:left}
.pn-next small{text-align:right}
@media(max-width:520px){.pn{grid-template-columns:1fr}}