/* ========================================
   抖音解决方案专属样式
   ======================================== */

/* 抖音品牌色 */
:root {
    --douyin-primary: #fe2c55;
    --douyin-secondary: #25f4ee;
    --douyin-dark: #161823;
    --douyin-gradient: linear-gradient(135deg, #fe2c55, #ff6b81);
}

/* ========================================
   抖音专属Hero
   ======================================== */
.douyin-hero {
    position: relative;
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #161823 0%, #1a1a2e 100%);
    overflow: hidden;
}

.douyin-hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(254, 44, 85, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(37, 244, 238, 0.1) 0%, transparent 50%);
}

.douyin-hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.douyin-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    background: rgba(254, 44, 85, 0.1);
    border: 1px solid rgba(254, 44, 85, 0.3);
    border-radius: 30px;
    color: var(--douyin-primary);
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 24px;
}

.douyin-badge i {
    font-size: 18px;
}

.douyin-hero-content h1 {
    font-size: 44px;
    font-weight: 800;
    color: #fff;
    line-height: 1.3;
    margin-bottom: 20px;
}

.douyin-hero-content p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    margin-bottom: 30px;
}

.douyin-hero-actions {
    display: flex;
    gap: 20px;
}

.btn-douyin-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    background: var(--douyin-gradient);
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(254, 44, 85, 0.4);
    transition: all 0.3s ease;
}

.btn-douyin-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(254, 44, 85, 0.5);
}

.btn-douyin-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.btn-douyin-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--douyin-primary);
    color: var(--douyin-primary);
}

.douyin-hero-image {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.douyin-hero-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* ========================================
   场景Tab切换
   ======================================== */
.douyin-scenarios {
    padding: 80px 0;
    background: #fff;
}

.scenarios-tabs {
    margin-top: 40px;
}

.tab-nav {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-light);
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-btn i {
    font-size: 18px;
}

.tab-btn:hover {
    color: var(--douyin-primary);
    background: rgba(254, 44, 85, 0.05);
}

.tab-btn.active {
    color: #fff;
    background: var(--douyin-gradient);
    box-shadow: 0 4px 15px rgba(254, 44, 85, 0.3);
}

.tab-content {
    display: none;
    animation: fadeIn 0.5s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.tab-info h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.tab-info > p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 24px;
}

.feature-list {
    margin-bottom: 30px;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    font-size: 15px;
    color: var(--text-primary);
}

.feature-list li i {
    color: var(--douyin-primary);
    font-size: 18px;
}

.tab-image {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.tab-image img {
    width: 100%;
    height: auto;
}

/* ========================================
   抖音产品推荐
   ======================================== */
.douyin-products {
    padding: 80px 0;
    background: linear-gradient(180deg, var(--bg-light) 0%, #fff 100%);
}

.products-grid-douyin {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.product-card-douyin {
    position: relative;
    background: #fff;
    border-radius: 16px;
    padding: 30px;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.product-card-douyin:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border-color: var(--douyin-primary);
}

.product-card-douyin.featured {
    border-color: var(--douyin-primary);
    background: linear-gradient(180deg, #fff 0%, rgba(254, 44, 85, 0.02) 100%);
}

.product-badge {
    position: absolute;
    top: -10px;
    right: 20px;
    padding: 6px 16px;
    font-size: 12px;
    font-weight: 600;
    color: #fff;
    background: var(--douyin-gradient);
    border-radius: 20px;
}

.product-icon-douyin {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    color: #fff;
    background: var(--douyin-gradient);
    border-radius: 16px;
}

.product-card-douyin h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.product-card-douyin p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 20px;
}

.product-price {
    margin-bottom: 20px;
}

.product-price .price {
    font-size: 28px;
    font-weight: 700;
    color: var(--douyin-primary);
}

.product-price .unit {
    font-size: 14px;
    color: var(--text-muted);
}

.btn-outline-douyin {
    display: inline-block;
    padding: 10px 24px;
    font-size: 14px;
    font-weight: 500;
    color: var(--douyin-primary);
    border: 2px solid var(--douyin-primary);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.btn-outline-douyin:hover {
    color: #fff;
    background: var(--douyin-gradient);
}

.btn-block {
    display: block;
    width: 100%;
    text-align: center;
}

/* ========================================
   核心优势
   ======================================== */
.douyin-advantages {
    padding: 80px 0;
    background: #fff;
}

.advantages-grid-douyin {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.advantage-card-douyin {
    padding: 30px;
    background: #fff;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.advantage-card-douyin:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    border-color: var(--douyin-primary);
}

.advantage-number {
    font-size: 48px;
    font-weight: 800;
    color: rgba(254, 44, 85, 0.15);
    margin-bottom: 15px;
}

.advantage-card-douyin h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.advantage-card-douyin p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ========================================
   成功案例
   ======================================== */
.douyin-cases {
    padding: 80px 0;
    background: linear-gradient(135deg, #161823 0%, #1a1a2e 100%);
}

.douyin-cases .section-title,
.douyin-cases .section-desc {
    color: #fff;
}

.douyin-cases .section-desc {
    color: rgba(255, 255, 255, 0.7);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.case-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 30px;
    transition: all 0.3s ease;
}

.case-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-5px);
}

.case-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.case-avatar {
    font-size: 50px;
    color: var(--douyin-primary);
}

.case-info h4 {
    font-size: 16px;
    font-weight: 600;
    color: #fff;
}

.case-info span {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
}

.case-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-bottom: 20px;
    padding: 15px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.case-stat {
    text-align: center;
}

.case-stat .stat-value {
    display: block;
    font-size: 18px;
    font-weight: 700;
    color: var(--douyin-primary);
}

.case-stat .stat-label {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.5);
}

.case-card > p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
    font-style: italic;
}

/* ========================================
   价格方案
   ======================================== */
.douyin-pricing {
    padding: 80px 0;
    background: #fff;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    align-items: stretch;
}

.pricing-card {
    position: relative;
    background: #fff;
    border-radius: 16px;
    padding: 40px 30px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.pricing-card.featured {
    border-color: var(--douyin-primary);
    box-shadow: 0 10px 40px rgba(254, 44, 85, 0.15);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 20px;
    font-size: 13px;
    font-weight: 600;
    color: #fff;
    background: var(--douyin-gradient);
    border-radius: 20px;
}

.pricing-header {
    text-align: center;
    margin-bottom: 25px;
}

.pricing-header h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.pricing-header p {
    font-size: 14px;
    color: var(--text-muted);
}

.pricing-price {
    text-align: center;
    padding: 20px 0;
    margin-bottom: 25px;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.pricing-price .currency {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    vertical-align: top;
}

.pricing-price .amount {
    font-size: 42px;
    font-weight: 800;
    color: var(--douyin-primary);
}

.pricing-price .period {
    font-size: 14px;
    color: var(--text-muted);
}

.pricing-features {
    margin-bottom: 30px;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    font-size: 14px;
    color: var(--text-secondary);
}

.pricing-features li i {
    color: var(--douyin-primary);
}

/* ========================================
   FAQ
   ======================================== */
.douyin-faq {
    padding: 80px 0;
    background: var(--bg-light);
}

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

.faq-item {
    background: #fff;
    border-radius: 12px;
    margin-bottom: 15px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 25px;
    font-size: 16px;
    font-weight: 500;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s ease;
}

.faq-question:hover {
    color: var(--douyin-primary);
}

.faq-question i {
    font-size: 12px;
    color: var(--text-muted);
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    display: none;
    padding: 0 25px 20px;
}

.faq-item.active .faq-answer {
    display: block;
}

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

/* ========================================
   CTA
   ======================================== */
.douyin-cta {
    padding: 80px 0;
    background: var(--douyin-gradient);
}

.cta-content-douyin {
    text-align: center;
    color: #fff;
}

.cta-content-douyin h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
}

.cta-content-douyin p {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 30px;
}

.cta-actions-douyin {
    display: flex;
    justify-content: center;
    gap: 20px;
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1200px) {
    .products-grid-douyin {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .advantages-grid-douyin {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .douyin-hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .douyin-hero-image {
        order: -1;
    }
    
    .douyin-hero-actions {
        justify-content: center;
    }
    
    .tab-grid {
        grid-template-columns: 1fr;
    }
    
    .tab-image {
        order: -1;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .douyin-hero {
        padding: 100px 0 60px;
    }
    
    .douyin-hero-content h1 {
        font-size: 32px;
    }
    
    .tab-nav {
        flex-direction: column;
        align-items: stretch;
    }
    
    .tab-btn {
        justify-content: center;
    }
    
    .products-grid-douyin {
        grid-template-columns: 1fr;
    }
    
    .advantages-grid-douyin {
        grid-template-columns: 1fr;
    }
    
    .cta-actions-douyin {
        flex-direction: column;
        align-items: center;
    }
}