:root {
  --bg:#f6f7f9;--panel:#fff;--text:#1f2933;--muted:#667085;--line:#d9dee6;--link:#254f78;--max:920px;
}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic",Meiryo,sans-serif;line-height:1.7}a{color:var(--link)}
.site-header{background:#fff;border-bottom:1px solid var(--line)}.site-header__inner{width:min(var(--max),calc(100% - 32px));margin:0 auto;min-height:62px;display:flex;align-items:center;justify-content:space-between;gap:16px}.site-name{color:var(--text);font-size:18px;font-weight:700;letter-spacing:.01em;text-decoration:none}.site-back{color:var(--muted);font-size:14px;text-decoration:none}.site-back:hover,.site-name:hover{text-decoration:underline}
.home{width:min(var(--max),calc(100% - 32px));margin:54px auto 72px}.home h1{margin:0 0 10px;font-size:clamp(30px,5vw,44px);line-height:1.2}.home .intro{margin:0 0 38px;color:var(--muted)}.tool-list{margin:0;padding:0;list-style:none;border-top:1px solid var(--line)}.tool-item{border-bottom:1px solid var(--line)}.tool-link{display:grid;grid-template-columns:minmax(180px,1.2fr) minmax(0,2.4fr) 110px;gap:22px;align-items:start;padding:22px 4px;color:inherit;text-decoration:none}.tool-link:hover .tool-title{text-decoration:underline}.tool-title{font-weight:700;color:var(--link)}.tool-desc{color:var(--text)}.tool-date{color:var(--muted);font-size:14px;text-align:right;white-space:nowrap}.home-note{margin-top:32px;color:var(--muted);font-size:14px}
.tool-sitebar{background:#fff;border-bottom:1px solid #d9dee6}.tool-sitebar__inner{width:min(1180px,calc(100% - 32px));margin:0 auto;min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:16px}.tool-sitebar a{text-decoration:none}.tool-sitebar a:hover{text-decoration:underline}.tool-sitebar__name{color:#1f2933;font-weight:700}.tool-sitebar__back{color:#667085;font-size:14px}.security-note{margin-top:14px;padding:12px 14px;border:1px solid #d9dee6;border-radius:10px;background:#fafbfc;color:#667085;font-size:13px}
@media(max-width:700px){.home{margin-top:34px}.tool-link{grid-template-columns:1fr;gap:7px;padding:20px 2px}.tool-date{text-align:left}.site-header__inner,.tool-sitebar__inner{width:min(100% - 24px,var(--max))}}