:root{color-scheme:light}*{box-sizing:border-box}
body{margin:0;min-height:100vh;display:grid;place-items:center;padding:24px 16px;font-family:system-ui,-apple-system,"Hiragino Sans","Yu Gothic UI",Meiryo,sans-serif;color:#15263f;background:linear-gradient(135deg,#22ccbb,#009dff 50%,#b033dd)}
.card{width:100%;max-width:420px;background:#fff;border-radius:22px;padding:26px 24px 20px;box-shadow:0 18px 50px #0b123640}
.logo{display:block;width:210px;max-width:70%;margin:0 auto 6px}
.lead{text-align:center;color:#4a5b73;margin:0 0 16px;font-size:.92rem}
.tabs{display:grid;grid-template-columns:1fr 1fr;gap:6px;background:#f1f4fb;border-radius:12px;padding:4px;margin-bottom:14px}
.tabs button{border:0;background:none;border-radius:9px;padding:9px 6px;font:inherit;font-size:.86rem;font-weight:700;color:#4a5b73;cursor:pointer}
.tabs button.on{background:#fff;color:#15263f;box-shadow:0 2px 8px #0000001a}
label{display:block;font-weight:700;font-size:.9rem;margin:10px 0}
input{display:block;width:100%;margin-top:6px;padding:11px 12px;border:1px solid #cfd7e6;border-radius:10px;font:inherit;font-size:1rem}
input:focus{outline:3px solid #9fd3ff;border-color:#009dff}
.primary{display:block;width:100%;margin-top:8px;border:0;border-radius:999px;padding:13px;font:inherit;font-weight:900;font-size:1rem;color:#fff;cursor:pointer;background:linear-gradient(90deg,#22ccbb,#009dff 50%,#b033dd)}
.primary:disabled{opacity:.6;cursor:wait}
.msg{min-height:1.2em;color:#c5221f;font-weight:700;font-size:.9rem;margin:6px 0 0}
.note{font-size:.85rem;color:#4a5b73;margin:16px 0 6px}
.links{text-align:center;font-size:.85rem;margin:8px 0 0}.links a{color:#0a7bd8}