.main-three-col {
    display: grid;
    grid-template-columns: auto 1fr auto auto;
}

.content {
    grid-column: 2 / 4;
    max-width: none;
    width: 90%;
}

.toc-right {
    border-left: none;
    border-right: none;
}

@media (max-width: 900px) {
    .main-three-col {
        grid-template-columns: 1fr;
    }
    .toc-right {
        border-top: 1px solid #2a2d30;
    }
}

.app-count {
    font-size: 18px;
    font-weight: 400;
    color: #888;
    margin-left: 8px;
}

.recent-list {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin-bottom: 2rem;
}

.recent-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--toc-background-color);
    border: 1px solid #2a2d30;
    border-radius: 3px;
    padding: 0.5rem 0.75rem;
    color: var(--primary-text-color);
    transition: border-color 0.15s;
}
.recent-item:hover { border-color: var(--primary-link-color); text-decoration: none; }

.recent-thumb {
    width: 48px;
    height: 64px;
    object-fit: cover;
    border-radius: 2px;
    background: #090a0a;
    flex-shrink: 0;
    font-size: 0.35rem;
}

.recent-info { display: flex; flex-direction: column; gap: 0.15rem; }
.recent-title { font-size: 0.95rem; font-weight: 600; color: var(--primary-text-color); }
.recent-cat   { font-size: 0.8rem; color: #888; }

.app-grid {
    display: grid;
    gap: 1rem;

    grid-template-columns: repeat(
        auto-fit,
        minmax(220px, 1fr)
    );
}

.app-card {
    background: var(--toc-background-color);
    border: 1px solid #2a2d30;
    border-radius: 3px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    color: var(--primary-text-color);
    transition: border-color 0.15s;
}
.app-card:hover {
    border-color: var(--primary-link-color);
    text-decoration: none;
    color: var(--primary-text-color);
}

.card-screen {
    width: 100%;
    aspect-ratio: 4/3;
    background: #090a0a;
    overflow: hidden;
}
.card-screen img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.card-body { padding: 0.75rem; flex: 1; display: flex; flex-direction: column; gap: 0.25rem; }

.card-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--primary-text-color);
    line-height: 1.3;
}

.card-meta { display: flex; gap: 0.5rem; align-items: center; }

.card-version {
    font-size: 0.75rem;
    color: var(--primary-link-color);
}

.card-compat {
    margin-left: auto;
    font-size: 0.75rem;
}

.card-cat {
    font-size: 0.72rem;
    letter-spacing: 0.07em;
    color: #888;
}

.card-desc {
    font-size: 0.8rem;
    color: #999;
    line-height: 1.5;
    margin-top: 0.2rem;
}

.detail-layout {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 2rem;
    align-items: start;
    margin-top: 1rem;
}

.detail-screen {
    background: #090a0a;
    border: 1px solid #2a2d30;
    border-radius: 3px;
    overflow: hidden;
}
.detail-screen img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.detail-version { margin-bottom: 1rem; }

.detail-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0 1.5rem;
    font-size: 0.9rem;
}
.detail-table th, .detail-table td {
    padding: 0.5rem 0.75rem;
    border: 1px solid #2a2d30;
    text-align: left;
}
.detail-table th {
    background: var(--primary-color);
    color: #888;
    width: 120px;
    font-size: 0.9rem;
}
.detail-table td { background: var(--toc-background-color); }
.detail-table a { color: var(--primary-link-color); }

.button {
    background-color: #31363b;
    border: none;
    color: white;
    padding: 20px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 4px 2px;
    cursor: pointer;
    border-radius: 8px;
    font-family: var(--text-font-family);
}
.button:hover { background-color: var(--primary-link-color); color: #000; text-decoration: none; }

input[type="text"],
textarea {
    background: var(--toc-background-color);
    color: var(--primary-text-color);
    border: 1px solid #2a2d30;
    border-radius: 3px;
}
input[type="text"]:focus,
textarea:focus {
    border-color: var(--primary-link-color);
    outline: none;
}
input[type="text"]::placeholder,
textarea::placeholder {
    color: #555;
}

.filter-checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--primary-text-color);
}

.filter-checkbox input {
    appearance: none;
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    border: 1px solid #2a2d30;
    background: var(--toc-background-color);
    border-radius: 2px;
    position: relative;
    cursor: pointer;
    transition: all 0.15s ease;
}

.filter-checkbox input:hover {
    border-color: var(--primary-link-color);
}

.filter-checkbox input:checked {
    background: var(--primary-link-color);
    border-color: var(--primary-link-color);
}

.filter-checkbox input:checked::after {
    content: "";
    position: absolute;
    left: 4px;
    top: 1px;
    width: 4px;
    height: 8px;
    border: solid #000;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

@media (max-width: 768px) {
    .detail-layout { grid-template-columns: 1fr; }
    .app-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
}