@import"https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;700&display=swap";:root{--bg:#eff3f1;--panel:#fff;--ink:#1a2120;--muted:#5f6a67;--line:#d8dfdb;--accent:#265342;--accent-soft:#e4ede9;--danger:#b14235;--danger-soft:#fae7e3;--info:#245066;--info-soft:#e3f1f7;--shadow:0 14px 40px rgb(0 0 0/8%)}*{box-sizing:border-box}body,html{margin:0;min-height:100%}body{background:linear-gradient(180deg,#f7faf8 0,var(--bg) 100%);color:var(--ink);font-family:Noto Sans JP,Yu Gothic,sans-serif}a{color:inherit}button,input{font:inherit}.auth-shell{align-items:center;display:flex;justify-content:center;min-height:100vh;padding:24px 16px}.auth-panel{background:var(--panel);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);display:grid;gap:20px;padding:24px;width:min(460px,100%)}.auth-header{display:grid;gap:8px}.auth-header h1{font-size:1.85rem;line-height:1.25;margin:0}.eyebrow{font-size:.76rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.eyebrow,.lead{color:var(--muted);margin:0}.lead{line-height:1.6}.stack{display:grid;gap:14px}.field{display:grid;gap:7px}.field-label{font-weight:700}.field input{background:#fff;border:1px solid var(--line);border-radius:10px;color:var(--ink);outline:none;padding:11px 12px;transition:border-color .14s ease,box-shadow .14s ease;width:100%}.field input:focus{border-color:var(--accent);box-shadow:0 0 0 3px #26534229}.field-hint{color:var(--muted);font-size:.86rem}.button{align-items:center;background:var(--accent);border:0;border-radius:10px;color:#fff;cursor:pointer;display:inline-flex;font-weight:700;justify-content:center;min-height:44px;padding:10px 14px;text-decoration:none}.button:disabled{cursor:not-allowed;opacity:.6}.button-secondary{background:var(--accent-soft);color:var(--accent)}.button-danger{background:var(--danger)}.button-row{display:flex;flex-wrap:wrap;gap:8px}.text-link{color:var(--accent);font-weight:700;text-decoration-thickness:2px;text-underline-offset:3px}.message{border-radius:10px;line-height:1.6;margin:0;padding:10px 12px}.message-info{background:var(--info-soft);color:var(--info)}.message-error{background:var(--danger-soft);color:var(--danger)}.terms-list{display:grid;gap:10px}.term-item{align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:12px;display:flex;gap:10px;padding:12px}.term-item input{accent-color:var(--accent);height:18px;margin-top:3px;width:18px}.term-item strong{display:block}.term-item small{color:var(--muted);display:block;margin-top:3px}.term-link{display:inline-block;margin-top:5px}.response-debug{border-top:1px solid var(--line);color:var(--muted);margin-top:18px;padding-top:12px}.response-debug summary{cursor:pointer;font-weight:700}.response-debug pre{background:#0f1514;border-radius:10px;color:#eef4f1;font-size:.84rem;max-height:260px;overflow:auto;padding:12px}@media(max-width:520px){.auth-panel{border-radius:14px;padding:18px}.auth-header h1{font-size:1.6rem}}