/* ===== 超醒产品详情页样式 ===== */

/* 产品页导航 */
.nav-product-nav {
    display: flex;
    align-items: center;
    gap: 20px;
}

.nav-back {
    color: var(--text-secondary);
    font-size: 14px;
    transition: var(--transition);
}

.nav-back:hover {
    color: var(--brand-yellow);
}

.product-tabs {
    display: flex;
    gap: 4px;
}

.product-tabs a {
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 13px;
    color: var(--text-muted);
    transition: var(--transition);
}

.product-tabs a:hover,
.product-tabs a.active {
    color: var(--brand-yellow);
    background: rgba(255,208,0,0.1);
}

/* 产品主展示 */
.product-hero {
    padding: 120px 0 80px;
    background: var(--bg-dark);
}

.product-hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.product-hero-image img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
}

.product-img-placeholder {
    width: 100%;
    height: 400px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    background: linear-gradient(135deg, #2A2A2A, #1A1A1A);
    border-radius: var(--radius-lg);
    border: 2px dashed var(--border-color);
    color: var(--text-muted);
}

.placeholder-icon {
    font-size: 60px;
    filter: drop-shadow(0 0 20px rgba(255,208,0,0.3));
}

.product-level-badge {
    display: inline-block;
    padding: 6px 18px;
    background: rgba(255,208,0,0.12);
    border: 1px solid rgba(255,208,0,0.3);
    border-radius: 20px;
    color: var(--brand-yellow);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
}

.product-hero-info h1 {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 16px;
}

.product-hero-desc {
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 24px;
}

.product-hero-price {
    display: flex;
    align-items: baseline;
    gap: 4px;
    margin-bottom: 24px;
}

.price-symbol {
    font-size: 24px;
    font-weight: 700;
    color: var(--brand-yellow);
}

.price-num {
    font-size: 56px;
    font-weight: 900;
    color: var(--brand-yellow);
    line-height: 1;
}

.product-hero-tags {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 32px;
}

.product-hero-tags .tag {
    padding: 8px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    color: var(--text-secondary);
}

.product-buy-btn {
    display: inline-block;
    padding: 14px 48px;
    background: var(--gradient-yellow);
    color: #000;
    font-weight: 700;
    font-size: 16px;
    border-radius: 50px;
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(255,208,0,0.3);
}

.product-buy-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(255,208,0,0.5);
    color: #000;
}

/* 三层结构 */
.tech-structure {
    background: var(--bg-section);
}

.structure-img-wrap {
    text-align: center;
    margin-bottom: 40px;
}

.structure-main-img {
    max-width: 500px;
    width: 100%;
    border-radius: var(--radius-lg);
}

.layers-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.layer-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 32px 24px;
    text-align: center;
    position: relative;
    transition: var(--transition);
}

.layer-card:hover {
    border-color: var(--brand-yellow);
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
}

.layer-num {
    position: absolute;
    top: 16px;
    left: 16px;
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 700;
}

.layer-icon-big {
    display: block;
    font-size: 48px;
    margin-bottom: 16px;
}

.layer-card h4 {
    color: var(--brand-yellow);
    font-size: 18px;
    margin-bottom: 10px;
}

.layer-card p {
    color: var(--text-secondary);
    font-size: 14px;
}

/* 产品信息表 */
.product-specs {
    background: var(--bg-dark);
}

.specs-table {
    max-width: 700px;
    margin: 0 auto;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
}

.spec-row {
    display: flex;
    padding: 16px 28px;
    border-bottom: 1px solid var(--border-color);
}

.spec-row:last-child {
    border-bottom: none;
}

.spec-label {
    width: 140px;
    flex-shrink: 0;
    color: var(--text-muted);
    font-size: 14px;
}

.spec-value {
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
}

/* 对比区 */
.compare-section {
    background: var(--bg-section);
}

.compare-grid {
    display: flex;
    align-items: stretch;
    max-width: 800px;
    margin: 0 auto;
    gap: 0;
}

.compare-col {
    flex: 1;
    padding: 36px;
    border-radius: var(--radius);
}

.compare-ours {
    background: rgba(255,208,0,0.08);
    border: 1px solid rgba(255,208,0,0.2);
}

.compare-ours h3 {
    color: var(--brand-yellow);
    font-size: 24px;
    margin-bottom: 20px;
    text-align: center;
}

.compare-theirs {
    background: rgba(255,68,68,0.06);
    border: 1px solid rgba(255,68,68,0.15);
}

.compare-theirs h3 {
    color: #ff6b6b;
    font-size: 24px;
    margin-bottom: 20px;
    text-align: center;
}

.compare-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 24px;
    font-size: 20px;
    font-weight: 900;
    color: var(--text-muted);
}

.compare-col ul {
    list-style: none;
}

.compare-col li {
    padding: 10px 0;
    font-size: 15px;
}

.compare-col li.check {
    color: #4CAF50;
}

.compare-col li.cross {
    color: #ff6b6b;
}

/* FAQ */
.faq-section {
    background: var(--bg-dark);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    margin-bottom: 12px;
    cursor: pointer;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: rgba(255,208,0,0.2);
}

.faq-question {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 20px 24px;
}

.faq-num {
    background: var(--gradient-yellow);
    color: #000;
    font-weight: 700;
    font-size: 12px;
    padding: 4px 8px;
    border-radius: 4px;
    flex-shrink: 0;
}

.faq-q-text {
    flex: 1;
    font-weight: 600;
    font-size: 15px;
}

.faq-toggle {
    font-size: 20px;
    color: var(--brand-yellow);
    transition: var(--transition);
}

.faq-item.open .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
}

.faq-item.open .faq-answer {
    max-height: 200px;
}

.faq-answer p {
    padding: 0 24px 20px 56px;
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.8;
}

/* CTA */
.cta-section {
    background: var(--bg-section);
    padding: 80px 0;
}

.cta-section h2 {
    font-size: 32px;
    margin-bottom: 32px;
    background: var(--gradient-yellow);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.cta-btn {
    padding: 16px 32px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 18px;
    font-weight: 700;
    text-align: center;
    transition: var(--transition);
}

.cta-btn small {
    font-weight: 400;
    font-size: 12px;
    color: var(--text-muted);
}

.cta-btn:hover,
.cta-btn.active {
    border-color: var(--brand-yellow);
    background: rgba(255,208,0,0.08);
    color: var(--brand-yellow);
}

.cta-slogan {
    color: var(--text-muted);
    font-size: 14px;
}

/* 响应式 */
@media (max-width: 768px) {
    .product-hero-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .product-hero-info h1 {
        font-size: 28px;
    }

    .price-num {
        font-size: 40px;
    }

    .layers-row {
        grid-template-columns: 1fr;
    }

    .compare-grid {
        flex-direction: column;
    }

    .compare-divider {
        padding: 12px 0;
    }

    .nav-product-nav {
        flex-direction: column;
        gap: 8px;
    }

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