/* 共通ナビゲーションとアカウント画面。既存の配色・余白を使用します。 */
.site-nav { flex-wrap: wrap; justify-content: flex-end; gap: 4px 20px; padding-block: 10px; }
.auth-nav { display: flex; align-items: center; gap: 16px; padding-left: 20px; border-left: 1px solid var(--line); }
.auth-username { max-width: 140px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.auth-logout { min-height: 44px; padding: 0; border: 0; color: var(--green); background: transparent; cursor: pointer; white-space: nowrap; }
.auth-nav-notice { flex-basis: 100%; color: var(--muted); font-size: 11px; text-align: right; overflow-wrap: anywhere; }
.auth-nav-notice:empty { display: none; }
.account-main { padding-block: 40px 64px; min-height: 65vh; }
.account-card { max-width: 540px; margin-inline: auto; padding: 32px; border: 1px solid var(--line); border-radius: 5px; background: var(--white); }
.account-card h1 { margin-top: 12px; font-size: 28px; line-height: 1.5; }
.account-intro { margin-top: 14px; font-size: 13px; line-height: 1.9; color: var(--muted); }
.account-form { margin-top: 24px; }
.account-form fieldset { margin: 0; padding: 0; border: 0; min-width: 0; }
.account-field { display: block; margin-bottom: 19px; font-size: 13px; font-weight: 650; }
.account-field input { display: block; width: 100%; min-height: 46px; margin-top: 7px; padding: 10px 12px; border: 1px solid #a6b4a5; border-radius: 4px; background: #fff; color: var(--ink); font: inherit; font-size: 16px; font-weight: 400; }
.account-field small { display: block; margin-top: 5px; color: var(--muted); font-size: 11px; font-weight: 400; }
.account-password { display: flex; align-items: stretch; gap: 7px; }
.account-password input { min-width: 0; flex: 1; }
.account-password button { flex-shrink: 0; min-width: 52px; min-height: 44px; margin-top: 7px; border: 1px solid var(--line); border-radius: 4px; background: var(--paper); color: var(--green); font-size: 12px; cursor: pointer; }
.account-submit { width: 100%; justify-content: center; margin-top: 2px; cursor: pointer; }
.account-card button:disabled { cursor: wait; opacity: .6; }
.account-card input:disabled { background: #f4f4ef; }
.account-links { display: flex; flex-wrap: wrap; gap: 6px 20px; margin-top: 18px; font-size: 12px; }
.account-links a, .account-note a { display: inline-block; min-height: 44px; padding-block: 10px; color: var(--green); text-decoration: underline; text-underline-offset: 4px; }
.account-note { margin-top: 18px; font-size: 12px; line-height: 1.9; color: var(--muted); overflow-wrap: anywhere; }
.account-message { margin-top: 20px; padding: 13px 15px; border-left: 3px solid #718959; background: #eef2e4; font-size: 13px; line-height: 1.9; overflow-wrap: anywhere; }
.account-message:empty { display: none; }
.account-error { border-color: #a04433; background: #fff1eb; color: #843524; }
.account-card [hidden] { display: none !important; }
.account-footer { border-top: 1px solid var(--line); }
@media (max-width: 1000px) and (min-width: 801px) {
  .header-inner { gap: 18px; }
  .site-nav { column-gap: 16px; }
  .auth-nav { gap: 12px; padding-left: 16px; }
}
@media (max-width: 800px) {
  .site-nav { justify-content: center; gap: 6px 24px; padding-block: 7px 15px; }
  .auth-nav { flex-basis: 100%; justify-content: center; gap: 24px; margin-top: 5px; padding: 5px 0 0; border-left: 0; border-top: 1px solid var(--line); }
  .auth-username { max-width: 190px; }
  .auth-nav-notice { text-align: center; }
}
@media (max-width: 600px) {
  .account-main { padding-block: 24px 40px; }
  .account-card { padding: 24px 18px; }
  .account-card h1 { font-size: 24px; }
  .account-submit { margin-top: 2px; }
}