.nig-open,.nig-open body{overflow:hidden}
.nig{position:fixed;inset:0;z-index:2147483000;display:flex;align-items:center;justify-content:center;padding:20px;background:linear-gradient(135deg,rgba(10,166,154,.92),rgba(41,171,226,.92) 50%,rgba(0,113,188,.94));font-family:"Noto Sans JP",system-ui,-apple-system,sans-serif;overflow-y:auto}
.nig-card{width:100%;max-width:380px;background:#fff;border-radius:22px;padding:26px 22px 18px;box-shadow:0 18px 40px rgba(0,40,80,.25);color:#2b2a3a;text-align:center}
.nig-icon{display:block;margin:0 auto 12px;width:88px;height:88px;border-radius:20px;box-shadow:0 4px 12px rgba(0,60,120,.2)}
.nig h2{margin:0 0 8px;font-size:21px;font-weight:600;color:#0b6fb8}
.nig-lead{margin:0 0 14px;font-size:14px;line-height:1.7}
.nig-steps{margin:0 0 14px;padding:12px 14px 12px 34px;text-align:left;background:#f1f8fd;border-radius:14px;font-size:14px;line-height:1.65}
.nig-steps li{margin:4px 0}
.nig-note{margin:-4px 0 12px;font-size:12px;color:#5b6170}
.nig-primary{display:block;width:100%;margin:0 0 14px;padding:13px;border:0;border-radius:999px;background:linear-gradient(90deg,#0aa69a,#29abe2 55%,#0071bc);color:#fff;font:inherit;font-size:16px;font-weight:600}
.nig-primary[hidden]{display:none}
.nig-later{display:block;width:100%;padding:10px;border:0;background:none;color:#5b6170;font:inherit;font-size:13px;text-decoration:underline}
.nig-later:focus:not(:focus-visible){outline:none}