:root{color-scheme:light;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP",sans-serif;color:#243b35;background:#f4f6f2;font-size:15px}*{box-sizing:border-box}body{margin:0}a{color:#276658;text-underline-offset:4px}.shell{max-width:1400px;margin:auto;padding:0 24px}.host-nav{display:flex;flex-wrap:wrap;justify-content:space-between;gap:4px 24px;padding:12px 0}.host-nav a{display:inline-flex;align-items:center;min-height:44px;font-weight:600}.frame-note{margin:6px 0 16px;line-height:1.8;color:#53665e}.frame-note span{display:inline-block}iframe{display:block;width:100%;height:850px;height:calc(100dvh - 150px);min-height:620px;max-height:1100px;border:1px solid #d9e1da;border-radius:14px;background:#f7f8f4}.support-note{line-height:1.8;color:#53665e;margin:16px 0}.support-note a{display:inline-flex;align-items:center;min-height:44px;margin-left:12px}.advertising{margin:56px auto 40px;padding-top:24px;border-top:1px solid #d9e1da;text-align:center}.ad-slot{margin:auto;min-height:292px}.ad-slot-label{font-size:13px;color:#64736b;margin:0 0 12px}.ad-slot-box{width:300px;min-height:250px;margin:auto}.advertising>p{font-size:13px;line-height:1.9;color:#64736b}.host-footer{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 24px;padding:24px 0 36px;font-size:14px}.host-footer a{display:flex;align-items:center;min-height:44px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}a:focus-visible{outline:3px solid #729487;outline-offset:4px}@media(max-width:600px){.shell{padding:0 10px}.host-nav{font-size:14px;gap:2px 12px}.frame-note{font-size:13px;margin-bottom:12px}iframe{height:calc(100dvh - 135px);min-height:560px;border-radius:10px}.support-note{font-size:13px}.support-note a{margin-left:0}.advertising{margin-top:48px}.host-footer{gap:4px 16px}}

.tool-title{font-size:clamp(18px,2.4vw,26px);line-height:1.6;font-weight:650;margin:10px 0 8px;letter-spacing:.01em}
.host-nav-main{display:flex;flex-wrap:wrap;gap:0 18px}@media(max-width:600px){.host-nav-main{gap:0 12px}}