/* 账户区域沿用官网品牌变量；仅在 User 的品牌页面加载。 */
.sg-account-page {
    background: var(--sg-brand-bg);
    color: var(--sg-brand-text);
    font-family: var(--sg-font-ui);
    color-scheme: dark;
}
.sg-account-notice {
    width: min(calc(100% - 2 * var(--sg-nav-side)), 74rem);
    margin: 1.25rem auto 0;
    padding: 0.75rem 1rem;
    border-left: 2px solid #555;
    background: #111;
    color: var(--sg-brand-muted);
    font-size: 0.875rem;
    line-height: 1.6;
}
.sg-account-notice p { margin: 0; }
.sg-account-notice a { color: var(--sg-brand-text); text-decoration: underline; text-underline-offset: 0.2em; }
.sg-account-notice a:focus-visible { outline: 2px solid var(--sg-brand-text); outline-offset: 3px; }
.sg-account {
    --account-line: #303030;
    --account-surface: #111111;
    --account-success: #9ac6a5;
    --account-error: #ff9999;
    --account-warning: #d9bb8b;
    width: min(calc(100% - 2 * var(--sg-nav-side)), 74rem);
    margin: 0 auto;
    padding: clamp(2rem, 4vw, 4rem) 0 clamp(4rem, 7vw, 7rem);
    font-family: var(--sg-font-ui);
    line-height: 1.6;
    overflow-wrap: anywhere;
}
.sg-account, .sg-account * { box-sizing: border-box; }
.sg-account [hidden] { display: none !important; }
.sg-account h1, .sg-account h2, .sg-account h3, .sg-account p { margin: 0; }
.sg-account h1 {
    color: var(--sg-brand-text);
    font-size: clamp(2rem, 3vw, 2.75rem);
    font-weight: 750;
    line-height: 1.15;
    letter-spacing: -0.035em;
}
.sg-account h2 {
    color: var(--sg-brand-text);
    font-size: 1.125rem;
    font-weight: 650;
    line-height: 1.4;
}
.sg-account a { text-decoration: none; }
.sg-account .sg-account-intro {
    max-width: 38rem;
    margin-top: 0.8rem;
    color: var(--sg-brand-muted);
    font-size: 1rem;
}
.sg-account a:focus-visible, .sg-account button:focus-visible, .sg-account input:focus-visible {
    outline: 2px solid var(--sg-brand-text);
    outline-offset: 4px;
}
.sg-account-layout {
    display: grid;
    grid-template-columns: 14rem minmax(0, 1fr);
    gap: clamp(2rem, 5vw, 5rem);
    align-items: start;
}
.sg-account-sidebar { min-width: 0; }
.sg-account-identity {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    padding-bottom: 1.5rem;
    color: var(--sg-brand-text);
}
.sg-account-identity:hover { color: var(--sg-brand-text); }
.sg-account-identity > span:last-child { min-width: 0; }
.sg-account-identity strong { display: block; font-size: 1rem; line-height: 1.4; }
.sg-account-identity small { display: block; margin-top: 0.25rem; color: var(--sg-brand-muted); font-size: 0.8125rem; }
.sg-account-nav { border-top: 1px solid var(--account-line); padding-top: 0.75rem; }
.sg-account-nav a {
    display: block;
    padding: 0.8rem 1rem;
    border-left: 2px solid transparent;
    color: var(--sg-brand-muted);
    font-size: 0.9375rem;
    font-weight: 600;
    transition: background-color 160ms ease, color 160ms ease;
}
.sg-account-nav a:hover { background: var(--account-surface); color: var(--sg-brand-text); }
.sg-account-nav a[aria-current="page"] {
    border-left-color: var(--sg-brand-accent);
    color: var(--sg-brand-text);
    background: var(--account-surface);
}
.sg-account-content { min-width: 0; max-width: 48rem; }
.sg-account-heading { padding-bottom: 2rem; }
.sg-account-section { border-top: 1px solid var(--account-line); padding: 1.75rem 0; }
.sg-account-section > h2 { margin-bottom: 1rem; }
.sg-account-section > .sg-account-message + form { margin-top: 1rem; }
.sg-account .sg-account-hint { color: var(--sg-brand-muted); font-size: 0.875rem; line-height: 1.65; }
.sg-account .sg-account-hint + form { margin-top: 1.25rem; }
.sg-account-avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 6rem;
    height: 6rem;
    padding: 0;
    overflow: hidden;
    border: 1px solid var(--account-line);
    border-radius: 50%;
    background: var(--account-surface);
    color: var(--sg-brand-text);
    font-size: 2.25rem;
    font-weight: 600;
}
.sg-account-avatar img { display: block; width: 100%; height: 100%; object-fit: cover; }
.sg-account-avatar--small { width: 2.75rem; height: 2.75rem; font-size: 1rem; }
.sg-account-avatar-row { display: flex; align-items: center; flex-wrap: wrap; gap: 1.5rem; }
.sg-account-avatar-copy { flex: 1 1 12rem; }
.sg-account-avatar-copy .sg-account-hint { margin-top: 0.625rem; }
.sg-account-field { display: grid; gap: 0.5rem; margin-bottom: 1.25rem; }
.sg-account-label { display: block; color: var(--sg-brand-text); font-size: 0.9375rem; font-weight: 600; }
.sg-account-input {
    display: block;
    width: 100%;
    min-width: 0;
    min-height: 3rem;
    padding: 0.75rem 0.875rem;
    border: 1px solid #555;
    border-radius: 0.125rem;
    background: var(--account-surface);
    color: var(--sg-brand-text);
    font: inherit;
    font-size: 1rem;
    line-height: 1.5;
    box-shadow: none;
    -webkit-appearance: none;
    appearance: none;
}
.sg-account-input::placeholder { color: #999; opacity: 1; }
.sg-account-input:focus { border-color: var(--sg-brand-text); }
.sg-account-input[readonly] { color: var(--sg-brand-muted); border-color: var(--account-line); }
.sg-account-form { max-width: 36rem; }
.sg-account-inline { display: flex; align-items: flex-start; gap: 0.75rem; }
.sg-account-inline .sg-account-input { flex: 1 1 auto; width: 0; }
.sg-account-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    flex-shrink: 0;
    min-height: 3rem;
    padding: 0.7rem 1.35rem;
    border: 1px solid var(--sg-brand-text);
    border-radius: 0.125rem;
    background: var(--sg-brand-text);
    color: var(--sg-brand-bg);
    font-family: inherit;
    font-size: 0.9375rem;
    font-weight: 650;
    line-height: 1.4;
    text-align: center;
    cursor: pointer;
    transition: background-color 160ms ease, color 160ms ease, border-color 160ms ease;
}
.sg-account-button:hover { background: #d6d6d4; border-color: #d6d6d4; color: var(--sg-brand-bg); }
.sg-account-button--secondary { border-color: #555; background: transparent; color: var(--sg-brand-text); }
.sg-account-button--secondary:hover { background: var(--account-surface); border-color: #999; color: var(--sg-brand-text); }
.sg-account-button--danger { color: var(--account-error); }
.sg-account-button--danger:hover { color: var(--account-error); }
.sg-account-button:disabled { cursor: wait; opacity: 0.6; }
.sg-account-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 0.75rem; }
.sg-account .sg-account-message { margin-top: 0.75rem; font-size: 0.875rem; color: var(--sg-brand-muted); }
.sg-account-message:empty { display: none; }
.sg-account .sg-account-message[data-state="success"], .sg-account-status { color: var(--account-success); }
.sg-account .sg-account-message[data-state="error"] { color: var(--account-error); }
.sg-account .sg-account-message[data-state="warning"] { color: var(--account-warning); }
.sg-account-status { display: inline-block; font-size: 0.875rem; }
.sg-account-link { display: inline-block; color: var(--sg-brand-text); font-size: 0.9375rem; text-underline-offset: 0.25em; }
.sg-account-link:hover { color: var(--sg-brand-accent); text-decoration: underline; }
.sg-account-details { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.5rem; margin: 0; }
.sg-account-details dt { margin-bottom: 0.35rem; font-size: 0.875rem; color: var(--sg-brand-muted); }
.sg-account-details dd { margin: 0; color: var(--sg-brand-text); font-size: 1rem; }
.sg-account-connection { display: flex; align-items: center; flex-wrap: wrap; gap: 1rem; }
.sg-account-connection > div { flex: 1 1 12rem; min-width: 0; }
.sg-account-connection img { width: 3rem; height: 3rem; border-radius: 0.125rem; }
.sg-account-connection + form { margin-top: 1.5rem; }
.sg-account-profile { max-width: 62rem; }
.sg-account-profile-head { display: flex; align-items: center; flex-wrap: wrap; gap: 1.5rem; padding-bottom: 2.5rem; }
.sg-account-profile-name { flex: 1 1 14rem; min-width: 0; }
.sg-account-profile-name .sg-account-hint { margin-top: 0.5rem; }
.sg-account-profile-name time { display: block; margin-top: 0.25rem; }
.sg-account-stats { display: flex; gap: clamp(3rem, 8vw, 7rem); margin: 0; padding: 1.75rem 0; border-top: 1px solid var(--account-line); }
.sg-account-stats div { display: flex; flex-direction: column-reverse; gap: 0.25rem; }
.sg-account-stats dt { color: var(--sg-brand-muted); font-size: 0.875rem; }
.sg-account-stats dd { margin: 0; color: var(--sg-brand-text); font-size: 2rem; font-weight: 600; line-height: 1.2; font-variant-numeric: tabular-nums; }
.sg-account-auth { max-width: 28rem; }
.sg-account-auth form { margin-top: 1.75rem; }
.sg-account-auth .sg-account-button[type="submit"] { width: 100%; }
.sg-account-auth .sg-account-actions { margin-top: 1.5rem; }
.sg-account-auth-links { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.75rem; margin-top: 1.5rem; }
.sg-account-check { display: flex; align-items: center; gap: 0.625rem; min-height: 2.75rem; margin-bottom: 1rem; cursor: pointer; font-size: 0.875rem; }
.sg-account-check input { width: 1.125rem; height: 1.125rem; accent-color: var(--sg-brand-text); }
.sg-account-providers { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.75rem; margin-top: 1rem; }
.sg-account-auth-separator { display: flex; align-items: center; gap: 1rem; margin-top: 1.5rem; color: var(--sg-brand-muted); font-size: 0.8125rem; }
.sg-account-auth-separator::before, .sg-account-auth-separator::after { content: ""; flex: 1; height: 1px; background: var(--account-line); }
.sg-account-validation { margin-top: 1.25rem; padding: 1rem; border-left: 2px solid var(--account-error); background: var(--account-surface); color: var(--account-error); font-size: 0.875rem; }
.sg-account-validation ul { margin: 0; padding-left: 1.25rem; }
@media (max-width: 48rem) {
    .sg-account-layout { grid-template-columns: minmax(0, 1fr); gap: 2rem; }
    .sg-account-identity { padding-bottom: 1rem; }
    .sg-account-nav { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); padding-top: 0; border-top: 0; border-bottom: 1px solid var(--account-line); }
    .sg-account-nav a { display: flex; align-items: center; justify-content: center; padding: 0.8rem 0.5rem; border-left: 0; border-bottom: 2px solid transparent; text-align: center; font-size: 0.875rem; }
    .sg-account-nav a[aria-current="page"] { border-bottom-color: var(--sg-brand-accent); }
    .sg-account-heading { padding-bottom: 1.5rem; }
    .sg-account-profile-head { align-items: flex-start; }
}
@media (max-width: 30rem) {
    .sg-account-inline { flex-direction: column; align-items: stretch; }
    .sg-account-inline .sg-account-input { width: 100%; }
    .sg-account-inline .sg-account-button { align-self: flex-start; }
    .sg-account-details { grid-template-columns: minmax(0, 1fr); }
    .sg-account-avatar { width: 5rem; height: 5rem; }
    .sg-account-avatar--small { width: 2.75rem; height: 2.75rem; }
}
@media (prefers-reduced-motion: reduce) {
    .sg-account-button, .sg-account-nav a { transition: none; }
}
@media (forced-colors: active) {
    .sg-account-nav a[aria-current="page"] { border-color: Highlight; }
    .sg-account-input, .sg-account-button { border: 1px solid ButtonText; }
}