* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #ff6b35;
    --secondary-color: #f7931e;
    --accent-color: #00c853;
    --dark-color: #212529;
    --light-bg: #f8f9fa;
    --gradient-primary: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
    --gradient-success: linear-gradient(135deg, #00c853 0%, #00e676 100%);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
    padding: 15px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar-brand {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color) !important;
    display: flex;
    align-items: center;
    gap: 10px;
}

.navbar-brand img {
    height: 40px;
}

.nav-link {
    color: #555 !important;
    font-weight: 500;
    padding: 8px 20px !important;
    transition: all 0.3s ease;
    border-radius: 20px;
}

.nav-link:hover {
    color: var(--primary-color) !important;
    background: rgba(255, 107, 53, 0.1);
}

.hero-section {
    padding-top: 120px;
    padding-bottom: 80px;
    background: var(--gradient-primary);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="rgba(255,255,255,0.05)"/></svg>');
    background-size: 100px;
    animation: float 20s linear infinite;
}

@keyframes float {
    0% { transform: translateY(0) rotate(0deg); }
    100% { transform: translateY(-100px) rotate(360deg); }
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 20px;
    text-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
    font-size: 1.3rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 30px;
    line-height: 1.8;
}

.hero-stats {
    display: flex;
    gap: 40px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
    color: #fff;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    display: block;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.9;
}

.qr-code-container {
    background: #fff;
    padding: 20px;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    text-align: center;
    max-width: 280px;
    margin: 0 auto;
    animation: pulse 2s ease-in-out infinite;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.02); }
}

.qr-code {
    width: 200px;
    height: 200px;
    background: #f0f0f0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    margin-bottom: 15px;
    position: relative;
    overflow: hidden;
}

.qr-code img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.qr-code-placeholder {
    font-size: 0.9rem;
    color: #999;
    text-align: center;
    padding: 20px;
}

.qr-code-placeholder i {
    font-size: 3rem;
    display: block;
    margin-bottom: 10px;
}

.section {
    padding: 80px 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 20px;
    color: var(--dark-color);
}

.section-subtitle {
    text-align: center;
    color: #666;
    margin-bottom: 50px;
    font-size: 1.1rem;
}

.stats-section {
    background: var(--light-bg);
}

.stat-card {
    background: #fff;
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    height: 100%;
}

.stat-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.stat-card-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-card-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.stat-card-label {
    color: #666;
    font-size: 1.1rem;
}

.advantage-card {
    background: #fff;
    padding: 35px 25px;
    border-radius: 20px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    height: 100%;
    border: 2px solid transparent;
}

.advantage-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
}

.advantage-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: #fff;
    font-size: 2rem;
}

.advantage-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.advantage-desc {
    color: #666;
    line-height: 1.8;
}

.step-card {
    text-align: center;
    padding: 30px 20px;
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 20px;
    box-shadow: 0 5px 15px rgba(255, 107, 53, 0.3);
}

.step-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.step-desc {
    color: #666;
    line-height: 1.8;
}

.task-card {
    background: #fff;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    height: 100%;
}

.task-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.task-header {
    background: var(--gradient-primary);
    color: #fff;
    padding: 20px;
    text-align: center;
}

.task-price {
    font-size: 2rem;
    font-weight: 700;
}

.task-body {
    padding: 25px;
}

.task-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.task-desc {
    color: #666;
    margin-bottom: 15px;
    line-height: 1.6;
}

.task-slots {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-top: 1px solid #eee;
    margin-bottom: 15px;
}

.task-slots-info {
    color: #999;
    font-size: 0.9rem;
}

.task-slots-bar {
    flex: 1;
    height: 6px;
    background: #eee;
    border-radius: 3px;
    margin: 0 15px;
    overflow: hidden;
}

.task-slots-progress {
    height: 100%;
    background: var(--accent-color);
    border-radius: 3px;
}

.btn-task {
    width: 100%;
    padding: 12px;
    background: var(--gradient-primary);
    color: #fff;
    border: none;
    border-radius: 10px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-task:hover {
    transform: scale(1.02);
    box-shadow: 0 5px 15px rgba(255, 107, 53, 0.4);
}

.review-card {
    background: #fff;
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    height: 100%;
    position: relative;
}

.review-card::before {
    content: '"';
    position: absolute;
    top: 20px;
    left: 20px;
    font-size: 4rem;
    color: rgba(255, 107, 53, 0.1);
    font-family: Georgia, serif;
    line-height: 1;
}

.review-content {
    color: #555;
    line-height: 1.8;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
}

.review-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.review-avatar {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.2rem;
    font-weight: 700;
}

.review-info h5 {
    margin: 0;
    font-weight: 700;
    color: var(--dark-color);
}

.review-info p {
    margin: 0;
    color: #999;
    font-size: 0.9rem;
}

.review-income {
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid #eee;
    color: var(--primary-color);
    font-weight: 600;
}

.cta-section {
    background: var(--gradient-success);
    padding: 80px 0;
    text-align: center;
    color: #fff;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.cta-subtitle {
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.95;
}

.btn-download {
    display: inline-block;
    padding: 18px 50px;
    background: #fff;
    color: var(--accent-color);
    font-size: 1.2rem;
    font-weight: 700;
    border-radius: 50px;
    text-decoration: none;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
}

.btn-download:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
    color: var(--accent-color);
}

.footer {
    background: var(--dark-color);
    color: #fff;
    padding: 60px 0 30px;
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-links a:hover {
    color: #fff;
    padding-left: 5px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 40px;
    padding-top: 30px;
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

.task-type-card {
    background: #fff;
    padding: 30px 20px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    height: 100%;
}

.task-type-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.12);
}

.task-type-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    color: #fff;
    font-size: 1.5rem;
}

.task-type-title {
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 5px;
}

.task-type-desc {
    color: #999;
    font-size: 0.9rem;
}

.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 5px 20px rgba(255, 107, 53, 0.4);
    transition: all 0.3s ease;
    opacity: 0;
    visibility: hidden;
    z-index: 999;
}

.scroll-top.show {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(255, 107, 53, 0.5);
}

@media (max-width: 991px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-stats {
        justify-content: center;
        gap: 20px;
    }
    
    .stat-number {
        font-size: 2rem;
    }
}

@media (max-width: 767px) {
    .hero-section {
        padding-top: 100px;
        padding-bottom: 50px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section {
        padding: 50px 0;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .stat-card {
        padding: 30px 20px;
    }
    
    .stat-card-number {
        font-size: 2rem;
    }
    
    .advantage-card {
        padding: 25px 20px;
    }
    
    .task-card {
        margin-bottom: 20px;
    }
    
    .cta-title {
        font-size: 2rem;
    }
    
    .cta-subtitle {
        font-size: 1rem;
    }
    
    .btn-download {
        padding: 15px 40px;
        font-size: 1.1rem;
    }
}