/* ===== Product Tab Widget ===== */

.ptw-wrap {
    width: 100%;
    box-sizing: border-box;
}

/* ── Tab 导航 ── */
.ptw-nav {
    display: flex;
    align-items: center;
    gap: 40px;
    border-bottom: 1px solid #e8e8e8;
    padding: 0 0 12px 0;
}

.ptw-nav-item {
    position: relative;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    color: #333333;
    padding: 0 0 8px 0;
    white-space: nowrap;
    transition: color 0.2s ease;
}

.ptw-nav-item::before {
    content: '';
    position: absolute;
    left: 50%;
    bottom: -17px;
    transform: translateX(-50%);
    border-left: 7px solid transparent;
    border-right: 7px solid transparent;
    border-top: 7px solid transparent;
    transition: border-top-color 0.2s ease;
    z-index: 2;
}

.ptw-nav-item::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -13px;
    width: 100%;
    height: 3px;
    border-radius: 2px;
    background-color: transparent;
    transition: background-color 0.2s ease;
}

.ptw-nav-item.active {
    color: #2ecc71;
}

.ptw-nav-item.active::after {
    background-color: #2ecc71;
}

.ptw-nav-item.active::before {
    border-top-color: #2ecc71;
}

.ptw-nav-item:hover {
    color: inherit;
}

/* ── 内容面板 ── */
.ptw-panel {
    display: none;
    padding: 30px;
    background-color: #ffffff;
    border-radius: 8px;
    margin-top: 20px;
    border: 1px solid #e8e8e8;
}

.ptw-panel.active {
    display: block;
}

.ptw-body {
    color: #444444;
    line-height: 1.8;
}

.ptw-body p {
    margin: 0 0 12px 0;
}

.ptw-body p:last-child {
    margin-bottom: 0;
}

/* ── 图片 ── */
.ptw-image {
    margin-top: 20px;
}

.ptw-image img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ── Tags ── */
.ptw-tags {
    margin-top: 24px;
    line-height: 1.8;
}

.ptw-tags-label {
    color: #666666;
    margin-right: 6px;
}

.ptw-tags a {
    color: #3d8bcd;
    text-decoration: none;
    transition: color 0.2s ease;
    margin-right: 10px;
}

.ptw-tags a:hover {
    color: #2ecc71;
}

/* ── 移动端：Tab 导航横向滚动 ── */
@media (max-width: 768px) {
    .ptw-nav {
        overflow-x: auto;
        overflow-y: hidden;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        gap: 24px;
    }
    .ptw-nav::-webkit-scrollbar {
        display: none;
    }
    .ptw-panel {
        padding: 20px 16px;
        margin-top: 14px;
    }
}