:root{
  --ink:#1F2A4D;--ink-soft:#3B4770;--muted:#5B6476;--bg:#E6EAF0;--paper:#FFFFFF;--line:#C9D0DB;
  --tape:#F2C230;--tape-edge:#D9A800;--tape-ink:#2E2500;--link:#2F5BA8;--soft:#F4F6F9;
  color-scheme:light;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"Zen Kaku Gothic New",system-ui,-apple-system,"Hiragino Sans",sans-serif;font-size:17px;line-height:1.9}
.wrap{max-width:780px;margin:0 auto;padding:0 16px}
a{color:var(--link)}
:focus-visible{outline:3px solid var(--tape);outline-offset:2px}

/* header */
.site-head{background:var(--ink);color:#fff}
.site-head .wrap{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding-top:18px;padding-bottom:14px}
.logo{font-size:24px;font-weight:700;letter-spacing:.06em;color:#fff;text-decoration:none}
.head-links{display:flex;gap:16px;font-size:14px}
.head-links a{color:#C5CFE3}
.tape{height:12px;background:var(--tape);border-bottom:2px solid var(--tape-edge)}

/* article */
.crumbs{font-size:13px;color:var(--muted);margin:18px 0 0}
.crumbs a{color:var(--muted)}
article,.listing{background:var(--paper);border:1px solid var(--line);border-radius:6px;margin:12px 0 28px;padding:30px 28px 38px}
h1{font-size:28px;line-height:1.45;margin:0 0 10px}
.meta{font-size:13px;color:var(--muted);margin:0 0 22px}
.lede{font-size:17px;margin:0 0 20px}
h2{font-size:21px;line-height:1.5;margin:40px 0 12px;padding-left:12px;border-left:6px solid var(--tape)}
h3{font-size:18px;line-height:1.5;margin:26px 0 8px}
p{margin:0 0 14px}
ul,ol{margin:0 0 14px;padding-left:24px}
li{margin:5px 0}
strong{font-weight:700}
.toc{background:var(--soft);border-radius:6px;padding:14px 18px;margin:0 0 8px;font-size:15px}
.toc p{margin:0 0 4px;font-weight:700}
.toc ol{margin:0;padding-left:22px}
.point{background:var(--soft);border-left:5px solid var(--tape);padding:14px 16px;margin:18px 0;font-size:16px}
.point p:last-child{margin-bottom:0}
.point-title{font-weight:700;margin:0 0 4px}
.table-wrap{overflow-x:auto;margin:6px 0 18px}
table{border-collapse:collapse;width:100%;font-size:15px}
th,td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top;line-height:1.6}
thead th{background:var(--ink);color:#fff;font-weight:700}
tbody th{background:var(--soft);font-weight:700;white-space:nowrap}
.caption{font-size:13px;color:var(--muted);margin:-8px 0 18px}
figure{margin:18px 0 22px}
figure svg{display:block;width:100%;max-width:520px;margin:0 auto;height:auto;padding:8px;background:#fff;border:1px solid var(--line);border-radius:6px}
figcaption{font-size:13px;color:var(--muted);margin-top:6px}
.fig-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}

/* tool CTA */
.cta{margin:30px 0 8px;padding:20px 20px 22px;border-radius:6px;background:var(--ink);color:#fff}
.cta p{margin:0 0 12px;color:#E6EAF0}
.cta-title{font-size:19px;font-weight:700;color:#fff!important;margin:0 0 6px!important}
.btn{display:inline-block;padding:11px 20px;border-radius:4px;background:var(--tape);border:1.5px solid var(--tape-edge);color:var(--tape-ink);font-weight:700;text-decoration:none;line-height:1.4}
.btn:hover{background:#F5CD4F}

/* related / listing */
.author{margin-top:34px;padding-top:18px;border-top:1px solid var(--line);font-size:14px;color:var(--muted)}
.related{margin-top:22px}
.related h2{margin-top:0}
.cards{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.cards li{margin:0}
.cards a{display:block;padding:16px 18px;border:1px solid var(--line);border-radius:6px;text-decoration:none;color:var(--ink);background:#fff}
.cards a:hover{border-color:var(--ink)}
.cards strong{display:block;font-size:17px;line-height:1.5}
.cards span{display:block;font-size:14px;color:var(--muted);margin-top:4px;line-height:1.6}

.site-foot{padding:4px 0 40px;font-size:13px;color:var(--muted)}
.site-foot a{color:var(--muted)}
.site-foot p{margin:0 0 6px}

@media (max-width:560px){
  body{font-size:16px}
  .wrap.main-wrap{padding:0}
  article,.listing{border-radius:0;border-left:0;border-right:0;padding:24px 16px 30px}
  .crumbs{padding:0 16px}
  h1{font-size:23px}
  h2{font-size:19px}
  .fig-row{grid-template-columns:1fr}
  .head-links{gap:12px}
}

/* 画面写真 */
figure.shot img{display:block;width:100%;max-width:340px;height:auto;margin:0 auto;border:1px solid var(--line);border-radius:8px;box-shadow:0 2px 0 rgba(31,42,77,.06)}
figure.shot.wide img{max-width:420px}
figure.shot figcaption{text-align:center}
.steps-num{display:inline-block;min-width:1.9em;padding:0 .45em;margin-right:6px;border-radius:4px;background:var(--ink);color:#fff;font-size:15px;text-align:center}

/* テンプレート */
.template{position:relative;margin:12px 0 18px}
.template pre{margin:0;padding:16px 16px 18px;background:var(--soft);border:1px solid var(--line);border-radius:6px;font-family:"Zen Kaku Gothic New",system-ui,sans-serif;font-size:15px;line-height:1.8;white-space:pre-wrap;word-break:break-word}
.copy-btn{position:absolute;top:8px;right:8px;appearance:none;border:1.5px solid var(--ink);background:#fff;color:var(--ink);border-radius:4px;padding:4px 10px;font:inherit;font-size:13px;font-weight:700;cursor:pointer}
.copy-btn:hover{background:var(--bg)}