/* ==========================================================================
   2. 头部、导航与公共组件 (Hero Header)
   ========================================================================== */
.top-bar {
    background: #f4f4f5;
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
    color: var(--muted);
}

.top-bar-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 8px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.top-bar-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.top-bar .top-bar-brand-mobile {
    display: none;
}

.top-bar-login-text {
    display: none;
}


.top-bar-avatar {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 1px solid var(--border);
    overflow: hidden;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    color: var(--primary);
    background: #fff;
    text-decoration: none;
    transition: 0.2s;
}

img.top-bar-avatar {
    object-fit: cover;
    background: #fff;
}

.top-bar-avatar:hover {
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: var(--shadow-sm);
}
.top-bar-user {
    color: var(--primary);
    font-weight: 600;
}

.top-user-menu {
    position: relative;
}

.top-user-menu__trigger {
    list-style: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    user-select: none;
}

.top-user-menu__trigger::-webkit-details-marker {
    display: none;
}

.top-user-menu__panel {
    position: absolute;
    right: 0;
    top: calc(100% + 8px);
    min-width: 170px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    padding: 6px;
    z-index: 200;
}

.top-user-menu__item {
    display: block;
    padding: 8px 10px;
    border-radius: 8px;
    color: var(--primary);
    font-weight: 600;
}

.top-user-menu__item:hover {
    background: #f3f4f6;
    color: var(--accent);
}

.top-user-menu__item--danger {
    color: #b42318;
}

.top-bar-user-link {
    text-decoration: none;
}

.top-bar-user-link:hover {
    color: var(--accent);
}
.top-bar-link {
    color: var(--primary);
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 999px;
    border: 1px solid transparent;
}

.top-bar-link:hover {
    border-color: var(--border);
    color: var(--accent);
    background: #fff;
}

.top-bar-link--accent {
    color: #fff;
    background: var(--accent);
    border-color: var(--accent);
}

.top-bar-icon-link {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid var(--border);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    background: #fff;
    transition: 0.2s;
}

.top-bar-icon-link svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.top-bar-icon-link:hover {
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: var(--shadow-sm);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}
.hero-header {
    background: var(--surface);
    color: var(--primary);
    padding: 28px 0 20px;
    border-bottom: 1px solid var(--border);
}