:root{color-scheme:light;--blue:#1688ef;--ink:#14212c;--muted:#6f7e89;--line:#d9e2e9}*{box-sizing:border-box}body{margin:0;min-height:100vh;font-family:"Malgun Gothic","Noto Sans KR",sans-serif;color:var(--ink);background:radial-gradient(circle at 15% 15%,#dff2ff 0,transparent 32%),linear-gradient(135deg,#eef4f8,#f8fbfd 48%,#e7f1f8);display:grid;place-items:center}.login-shell{width:100%;padding:24px}.login-card{width:min(100%,430px);margin:auto;background:#fff;border:1px solid #dbe4eb;border-radius:24px;padding:42px 42px 32px;box-shadow:0 24px 70px #19364a20}.brand-mark{display:flex;align-items:flex-start;gap:10px;font-size:19px;line-height:.78}.brand-mark span{width:17px;height:17px;margin-top:-10px;border-radius:50%;background:var(--blue)}.eyebrow{margin:31px 0 7px;font-size:11px;letter-spacing:.17em;color:var(--blue);font-weight:900}.login-card h1{margin:0;font-size:31px;letter-spacing:-.04em}.lead{margin:12px 0 28px;color:var(--muted);font-size:13px;line-height:1.7}.login-card label{display:block;margin:15px 0 7px;font-size:12px;font-weight:900}.login-card input{width:100%;height:48px;border:1px solid var(--line);border-radius:11px;background:#fbfcfd;padding:0 14px;font:inherit;outline:none}.login-card input:focus{border-color:var(--blue);box-shadow:0 0 0 4px #1688ef16}.login-card button{width:100%;height:50px;margin-top:8px;border:0;border-radius:11px;background:var(--ink);color:#fff;font:inherit;font-weight:900;cursor:pointer}.login-card button:disabled{opacity:.55;cursor:wait}.message{min-height:20px;margin:10px 0 0;color:#be3434;font-size:12px;font-weight:800}.secure-note{margin:24px 0 0;padding-top:20px;border-top:1px solid #e6ebef;text-align:center;color:#84919a;font-size:10px}.secure-note span{color:#37a46b;margin-right:4px}@media(max-width:520px){.login-shell{padding:14px}.login-card{padding:34px 24px 26px;border-radius:20px}}