/* 活动页面专用样式 */

/* 活动主视觉区域 */
.activity-hero {
    position: relative;
    padding: 140px 0 100px;
    overflow: hidden;
    color: white;
    text-align: center;
}

.activity-hero .hero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a6f 50%, #c44569 100%);
    z-index: -2;
}

.activity-hero .hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    z-index: -1;
    animation: bgPulse 8s ease-in-out infinite;
}

@keyframes bgPulse {
    0%, 100% { opacity: 0.7; }
    50% { opacity: 1; }
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
    animation: fadeInUp 0.8s ease;
}

.activity-tag {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.4);
    color: white;
    padding: 6px 20px;
    border-radius: 30px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 20px;
    letter-spacing: 2px;
    animation: tagBounce 2s ease-in-out infinite;
}

@keyframes tagBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 15px;
    line-height: 1.2;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
    font-size: 1.3rem;
    opacity: 0.95;
    margin-bottom: 40px;
    letter-spacing: 1px;
}

/* 价格展示 */
.price-box {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 24px;
    padding: 40px 30px;
    margin: 0 auto 40px;
    max-width: 500px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.price-original {
    font-size: 1.1rem;
    opacity: 0.85;
    margin-bottom: 10px;
}

.price-original span {
    text-decoration: line-through;
    opacity: 0.7;
}

.price-trial {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 5px;
    margin-bottom: 15px;
}

.price-trial .currency {
    font-size: 2rem;
    font-weight: 600;
    margin-top: 15px;
}

.price-trial .amount {
    font-size: 5rem;
    font-weight: 900;
    line-height: 1;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.price-trial .unit {
    font-size: 1.5rem;
    font-weight: 500;
    align-self: flex-end;
    margin-bottom: 10px;
    opacity: 0.9;
}

.price-note {
    font-size: 1rem;
    opacity: 0.9;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    display: inline-block;
}

/* CTA 按钮 */
.cta-group {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.btn-cta {
    padding: 16px 40px;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 50px;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.btn-primary {
    background: white;
    color: #c44569;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.3);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-3px);
}

/* 倒计时 */
.countdown-wrap {
    margin-top: 30px;
}

.countdown-label {
    font-size: 1rem;
    opacity: 0.9;
    margin-bottom: 15px;
}

.countdown {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}

.count-item {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 15px 20px;
    min-width: 70px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.count-item span {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
}

.count-item small {
    font-size: 0.8rem;
    opacity: 0.85;
    margin-top: 5px;
}

.count-sep {
    font-size: 1.8rem;
    font-weight: 700;
    opacity: 0.7;
}

/* 通用区块 */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1a202c;
    text-align: center;
    margin-bottom: 15px;
}

.section-subtitle {
    text-align: center;
    color: #64748b;
    font-size: 1.1rem;
    margin-bottom: 50px;
}

/* 套餐详情 */
.plan-section {
    padding: 100px 0;
    background: #f8fafc;
}

.plan-card {
    max-width: 500px;
    margin: 0 auto;
    background: white;
    border-radius: 24px;
    padding: 50px 40px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
    position: relative;
    border: 2px solid transparent;
    background-clip: padding-box;
    overflow: hidden;
}

.plan-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, #ff6b6b, #ee5a6f, #c44569);
}

.plan-badge {
    position: absolute;
    top: 25px;
    right: -35px;
    background: linear-gradient(135deg, #ff6b6b, #c44569);
    color: white;
    padding: 6px 40px;
    font-size: 0.85rem;
    font-weight: 600;
    transform: rotate(45deg);
    box-shadow: 0 4px 15px rgba(196, 69, 105, 0.4);
}

.plan-header {
    text-align: center;
    margin-bottom: 30px;
    padding-top: 20px;
}

.plan-header h3 {
    font-size: 2rem;
    color: #1a202c;
    margin-bottom: 20px;
}

.plan-header h3 i {
    color: #ee5a6f;
    margin-right: 10px;
}

.plan-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 15px;
}

.price-old {
    font-size: 1.3rem;
    color: #94a3b8;
    text-decoration: line-through;
}

.price-new {
    font-size: 3rem;
    font-weight: 800;
    color: #c44569;
}

.price-new .period {
    font-size: 1.2rem;
    font-weight: 500;
    color: #64748b;
    margin-left: 5px;
}

.plan-highlight {
    background: linear-gradient(135deg, #fff3cd 0%, #ffeaa7 100%);
    border-left: 4px solid #ffc107;
    padding: 20px 25px;
    border-radius: 12px;
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.plan-highlight i {
    font-size: 1.5rem;
    color: #ffa502;
}

.plan-highlight span {
    font-size: 1.1rem;
    color: #2d3436;
}

.plan-highlight strong {
    color: #c44569;
    font-size: 1.3rem;
}

.plan-features {
    list-style: none;
    padding: 0;
    margin: 0 0 35px 0;
}

.plan-features li {
    padding: 12px 0;
    color: #475569;
    font-size: 1.05rem;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid #f1f5f9;
}

.plan-features li:last-child {
    border-bottom: none;
}

.plan-features li i {
    color: #27ae60;
    font-size: 1.2rem;
}

.btn-buy {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    padding: 18px;
    font-size: 1.2rem;
    font-weight: 600;
    background: linear-gradient(135deg, #ff6b6b, #c44569);
    color: white;
    border-radius: 50px;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 8px 25px rgba(196, 69, 105, 0.4);
    gap: 10px;
}

.btn-buy:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(196, 69, 105, 0.5);
}

/* 活动说明 */
.info-section {
    padding: 100px 0;
    background: white;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.info-card {
    background: #f8fafc;
    padding: 40px 30px;
    border-radius: 16px;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.info-card:hover {
    transform: translateY(-5px);
    background: white;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
    border-color: #ff6b6b;
}

.info-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #ff6b6b, #c44569);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin: 0 auto 20px;
    box-shadow: 0 8px 20px rgba(196, 69, 105, 0.3);
}

.info-card h3 {
    font-size: 1.4rem;
    color: #1a202c;
    margin-bottom: 12px;
}

.info-card p {
    color: #64748b;
    line-height: 1.6;
    font-size: 0.98rem;
}

/* 常见问题 */
.faq-section {
    padding: 100px 0;
    background: #f8fafc;
}

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

.faq-item {
    background: white;
    margin-bottom: 16px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
}

.faq-item:hover {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.faq-question {
    padding: 22px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.faq-question:hover {
    background-color: #f8fafc;
}

.faq-question span {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1a202c;
}

.faq-toggle {
    font-size: 1.2rem;
    color: #ee5a6f;
    transition: transform 0.3s ease;
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
    padding: 0 30px;
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding: 0 30px 22px;
}

.faq-answer p {
    color: #475569;
    line-height: 1.7;
    margin: 0;
}

/* 动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.info-card {
    animation: fadeInUp 0.6s ease forwards;
    opacity: 0;
}

.info-card:nth-child(1) { animation-delay: 0.1s; }
.info-card:nth-child(2) { animation-delay: 0.2s; }
.info-card:nth-child(3) { animation-delay: 0.3s; }
.info-card:nth-child(4) { animation-delay: 0.4s; }

/* 响应式设计 */
@media (max-width: 768px) {
    .activity-hero {
        padding: 100px 0 80px;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .price-box {
        padding: 30px 20px;
    }

    .price-trial .amount {
        font-size: 4rem;
    }

    .btn-cta {
        padding: 14px 28px;
        font-size: 1rem;
    }

    .cta-group {
        flex-direction: column;
        align-items: center;
    }

    .btn-cta {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }

    .count-item {
        min-width: 55px;
        padding: 10px 12px;
    }

    .count-item span {
        font-size: 1.5rem;
    }

    .count-sep {
        font-size: 1.3rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .plan-card {
        padding: 40px 25px;
    }

    .plan-header h3 {
        font-size: 1.6rem;
    }

    .price-new {
        font-size: 2.5rem;
    }

    .plan-section,
    .info-section,
    .faq-section {
        padding: 60px 0;
    }

    .info-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .price-trial .amount {
        font-size: 3.5rem;
    }

    .price-trial .currency {
        font-size: 1.5rem;
        margin-top: 10px;
    }

    .countdown {
        gap: 5px;
    }

    .count-item {
        min-width: 45px;
        padding: 8px;
    }

    .count-item span {
        font-size: 1.2rem;
    }

    .count-item small {
        font-size: 0.7rem;
    }

    .count-sep {
        font-size: 1rem;
    }

    .plan-badge {
        right: -30px;
        padding: 5px 35px;
        font-size: 0.75rem;
    }
}