.app{display:flex;flex-direction:column;height:100vh;font-family:system-ui, -apple-system, "Segoe UI", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif}.app__header{display:flex;align-items:center;justify-content:space-between;height:52px;padding:0 20px;background:#ffffff;border-bottom:1px solid #e5e7eb;flex:0 0 auto}.app__brand{font-size:17px;font-weight:700;color:#2563eb}.app__main{flex:1 1 auto;min-height:0}.app__frame{width:100%;height:100%;border:0;display:block}.usermenu{position:relative}.usermenu__trigger{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;font-size:14px;color:#374151;border-radius:8px;cursor:pointer;list-style:none}.usermenu__trigger::-webkit-details-marker{display:none}.usermenu__trigger:hover{background:#f3f4f6}.usermenu[open] .usermenu__caret{transform:rotate(180deg)}.usermenu__panel{position:absolute;top:calc(100% + 6px);right:0;min-width:200px;padding:8px;background:#ffffff;border:1px solid #e5e7eb;border-radius:10px;box-shadow:0 8px 24px rgba(0,0,0,0.12);z-index:10}.usermenu__email{padding:6px 10px 10px;font-size:12px;color:#6b7280;border-bottom:1px solid #f3f4f6;margin-bottom:6px;word-break:break-all}.usermenu__logout{display:block;width:100%}.usermenu__logout button{width:100%;padding:8px 10px;font-size:14px;text-align:left;color:#b91c1c;background:transparent;border:none;border-radius:6px;cursor:pointer}.usermenu__logout button:hover{background:#fef2f2}.flash{position:fixed;top:12px;left:50%;transform:translateX(-50%);z-index:1000;width:92%;max-width:420px;transition:opacity 0.3s ease, transform 0.3s ease}.flash--hide{opacity:0;transform:translateX(-50%) translateY(-8px);pointer-events:none}.flash__msg{margin-bottom:8px;padding:12px 16px;font-size:14px;border-radius:8px;box-shadow:0 4px 12px rgba(0,0,0,0.08)}.flash__msg--notice{background:#ecfdf5;color:#065f46}.flash__msg--alert{background:#fef2f2;color:#b91c1c}:root{--auth-accent: #2563eb;--auth-accent-hover: #1d4ed8;--auth-bg: #f3f4f6;--auth-card-bg: #ffffff;--auth-text: #111827;--auth-muted: #6b7280;--auth-border: #d1d5db;--auth-error-bg: #fef2f2;--auth-error-text: #b91c1c}.auth{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:24px;background:var(--auth-bg);color:var(--auth-text);font-family:system-ui, -apple-system, "Segoe UI", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif}.auth__card{width:100%;max-width:400px;padding:40px 32px;background:var(--auth-card-bg);border-radius:12px;box-shadow:0 1px 3px rgba(0,0,0,0.1),0 8px 24px rgba(0,0,0,0.06)}.auth__brand{font-size:20px;font-weight:700;color:var(--auth-accent);text-align:center}.auth__title{margin:8px 0 24px;font-size:16px;font-weight:600;text-align:center}.auth__lead{margin:-12px 0 20px;font-size:13px;line-height:1.6;color:var(--auth-muted)}.auth__field{margin-bottom:16px}.auth__label{display:block;margin-bottom:6px;font-size:13px;font-weight:500}.auth__input{width:100%;padding:10px 12px;font-size:15px;border:1px solid var(--auth-border);border-radius:8px;box-sizing:border-box}.auth__input:focus{outline:none;border-color:var(--auth-accent);box-shadow:0 0 0 3px rgba(37,99,235,0.15)}.auth__hint{margin:6px 0 0;font-size:12px;color:var(--auth-muted)}.auth__check{display:flex;align-items:center;gap:6px;margin-bottom:20px;font-size:13px;color:var(--auth-muted)}.auth__actions{margin-top:8px}.auth__submit{width:100%;padding:11px 16px;font-size:15px;font-weight:600;color:#ffffff;background:var(--auth-accent);border:none;border-radius:8px;cursor:pointer}.auth__submit:hover{background:var(--auth-accent-hover)}.auth-errors{margin-bottom:20px;padding:12px 16px;background:var(--auth-error-bg);border-radius:8px;color:var(--auth-error-text)}.auth-errors__list{margin:0;padding-left:18px;font-size:13px;line-height:1.6}.auth-links{margin-top:20px;text-align:center}.auth-links__item{display:inline-block;margin:4px 8px;font-size:13px;color:var(--auth-accent);text-decoration:none}.auth-links__item:hover{text-decoration:underline}