/* App Header Layout - Diet Version */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 32px; /* 12px -> 8px */
    background: var(--card-bg);
    position: relative;
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

.site-logo {
    width: 60px; /* 60px -> 60px */
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.site-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.site-name {
    display: flex;
    flex-direction: column;
    line-height: 1.0;
    text-align: left;
    cursor: pointer;
}

.site-name span {
    display: block;
    white-space: nowrap;
}

.site-name .line-1, .site-name .line-2 {
    font-size: 18px; /* 15px -> 18px */
    font-weight: 800;
    color: var(--primary-color);
}

.site-name .line-3 {
    font-size: 18px; /* 14px -> 18px */
    font-weight: 800;
    color: var(--primary-color);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-divider { border: 0; border-top: 1px solid var(--border-color); margin: 0; opacity: 0.6; }

.app-main {
    flex: 1;
    padding: 40px 32px;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 400px));
    gap: 24px;
    width: 100%;
    justify-content: center;
    justify-items: center;
}

.app-footer { padding: 24px 32px; text-align: center; color: var(--text-sub); font-size: 14px; }
.footer-divider { border: 0; border-top: 1px solid var(--border-color); margin: 0; opacity: 0.6; }