/* ================= Products 页专用样式 ================= */
.products-hero {
    padding: 160px 24px 60px 24px;
    background: linear-gradient(180deg, rgba(7, 17, 32, 0.5) 0%, var(--bg-dark) 100%),
                url('https://images.unsplash.com/photo-1522069169874-c58ec4b76be5?auto=format&fit=crop&w=1920&q=80') no-repeat center center/cover;
    background-attachment: fixed;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.products-hero h1 {
    font-size: 48px;
    font-weight: 800;
    color: var(--primary-text);
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.products-hero h1 span {
    color: var(--accent);
}

.products-hero p {
    color: var(--secondary-text);
    font-size: 16px;
    max-width: 600px;
    margin: 0 auto;
}

.tabs-section {
    padding: 40px 24px;
    background-color: #0B1625;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 68px;
    z-index: 100;
}

.tabs-container {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    gap: 15px;
}

.tab-button {
    flex: 1;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 18px 10px;
    border-radius: 14px;
    color: var(--secondary-text);
    font-weight: 700;
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tab-button:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.tab-button.active {
    background-color: var(--accent);
    color: var(--bg-dark);
    border-color: var(--accent);
    box-shadow: 0 10px 20px rgba(245, 166, 35, 0.15);
}

.detail-section {
    padding: 60px 24px;
    max-width: 1100px;
    margin: 0 auto;
}

.product-detail-content {
    display: none;
}

.product-detail-content.active {
    display: block;
    animation: fadeIn 0.6s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.detail-full-info {
    margin-bottom: 50px;
}

.detail-full-info h2 {
    font-size: 34px;
    font-weight: 800;
    color: var(--primary-text);
    margin-bottom: 12px;
    line-height: 1.25;
}

.detail-tagline {
    font-size: 14px;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 24px;
    display: inline-block;
    border-bottom: 2px solid var(--accent);
    padding-bottom: 4px;
}

.detail-desc {
    color: var(--secondary-text);
    font-size: 16px;
    margin-bottom: 40px;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 30px;
}

.advantage-item {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    display: flex;
    gap: 16px;
    align-items: flex-start;
    transition: var(--transition);
}

.advantage-item:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}

.advantage-check {
    color: var(--accent);
    font-weight: 900;
    font-size: 20px;
}

.advantage-text h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--primary-text);
    margin-bottom: 6px;
}

.advantage-text p {
    font-size: 13px;
    color: var(--secondary-text);
    line-height: 1.6;
}

.appendix-panel {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 40px;
    margin-top: 50px;
}

.appendix-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 50px;
}

.panel-block {
    margin-bottom: 35px;
}

.panel-block:last-child {
    margin-bottom: 0;
}

.panel-block h3 {
    font-size: 18px;
    font-weight: 800;
    color: var(--accent);
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-left: 3px solid var(--accent);
    padding-left: 10px;
}

.panel-block p {
    font-size: 14px;
    color: var(--secondary-text);
    margin-bottom: 10px;
}

.spec-list {
    list-style: none;
}

.spec-list li {
    font-size: 14px;
    color: var(--secondary-text);
    margin-bottom: 12px;
    display: flex;
    justify-content: space-between;
    border-bottom: 1px dashed rgba(255, 255, 255, 0.05);
    padding-bottom: 8px;
}

.spec-list li strong {
    color: var(--primary-text);
}

.bottom-placeholders-title {
    font-size: 15px;
    font-weight: 800;
    color: var(--secondary-text);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin: 50px 0 20px 0;
    text-align: center;
}

.appendix-images-container {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
}

.real-product-placeholder,
.real-product-image {
    width: 100%;
    aspect-ratio: 1 / 1;
    height: auto;
    min-height: 160px;
    min-width: 0;
    background-color: rgba(255, 255, 255, 0.01);
    border: 2px dashed rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--secondary-text);
    transition: var(--transition);
    overflow: hidden;
    position: relative;
    flex-shrink: 0;
}

.real-product-image {
    border-style: solid;
    border-color: rgba(255, 255, 255, 0.06);
    padding: 0;
}

.real-product-image img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    max-width: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
    transition: var(--transition);
}

.real-product-placeholder:hover,
.real-product-image:hover {
    border-color: var(--accent);
    color: var(--accent);
    background-color: rgba(245, 166, 35, 0.02);
    box-shadow: 0 10px 30px rgba(245, 166, 35, 0.05);
}

.real-product-image:hover img {
    transform: scale(1.03);
}

.small-placeholder-icon {
    font-size: 32px;
    margin-bottom: 10px;
    opacity: 0.7;
}

.small-placeholder-text {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

@media (max-width: 1024px) {
    .advantages-grid,
    .appendix-grid,
    .appendix-images-container {
        grid-template-columns: minmax(0, 1fr);
    }

    .tabs-container {
        flex-wrap: wrap;
    }

    .tab-button {
        flex: unset;
        width: calc(50% - 10px);
    }
}

@media (max-width: 576px) {
    .products-hero h1 {
        font-size: 36px;
    }

    .tab-button {
        width: 100%;
    }
}