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

body {
    font-family: 'Microsoft YaHei', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh
}

.navbar {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(10px);
    background: rgba(45, 45, 45, 0.9);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1)
}

.nav-link {
    color: #F8F9FA;
    text-decoration: none;
    padding: 0.5rem 1rem;
    transition: all 0.3s ease;
    position: relative
}

.nav-link:hover {
    color: #FFD700
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: #FFD700;
    transition: all 0.3s ease;
    transform: translateX(-50%)
}

.nav-link:hover::after {
    width: 80%
}

.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-image: url('https://filetx.3633yx.com/240625-e340585cfafb486a8902ee384890b050.jpg')
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(123, 104, 238, 0.8) 0%, rgba(76, 175, 80, 0.6) 100%)
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    color: #fff;
    padding: 2rem
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5)
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.5rem);
    margin-bottom: 2rem;
    opacity: 0.9
}

.card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 1rem;
    padding: 1.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2)
}

.btn-primary {
    display: inline-block;
    padding: 0.75rem 2rem;
    background: linear-gradient(135deg, #7B68EE 0%, #9B59B6 100%);
    color: #fff;
    text-decoration: none;
    border-radius: 0.5rem;
    font-weight: 600;
    border: 2px solid #7B68EE;
    box-shadow: 0 4px 15px rgba(123, 104, 238, 0.4);
    transition: all 0.3s ease
}

.btn-primary:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(123, 104, 238, 0.6);
    background: linear-gradient(135deg, #9B59B6 0%, #7B68EE 100%)
}

.btn-secondary {
    display: inline-block;
    padding: 0.75rem 2rem;
    background: linear-gradient(135deg, #4CAF50 0%, #66BB6A 100%);
    color: #fff;
    text-decoration: none;
    border-radius: 0.5rem;
    font-weight: 600;
    border: 2px solid #4CAF50;
    box-shadow: 0 4px 15px rgba(76, 175, 80, 0.4);
    transition: all 0.3s ease
}

.btn-secondary:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(76, 175, 80, 0.6);
    background: linear-gradient(135deg, #66BB6A 0%, #4CAF50 100%)
}

.section-title {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    color: #2D2D2D;
    position: relative
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, #7B68EE 0%, #4CAF50 100%);
    margin: 1rem auto 0;
    border-radius: 2px
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: #7B68EE
}

.footer {
    background: #2D2D2D;
    color: #F8F9FA;
    padding: 3rem 0
}

.footer-link {
    color: #F8F9FA;
    text-decoration: none;
    transition: color 0.3s ease
}

.footer-link:hover {
    color: #FFD700
}

.qr-code {
    width: 150px;
    height: 150px;
    border-radius: 0.5rem;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2)
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: #F8F9FA;
    font-size: 1.5rem;
    cursor: pointer
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(45, 45, 45, 0.98);
        flex-direction: column;
        padding: 1rem 0
    }

    .nav-menu.active {
        display: flex
    }

    .nav-link {
        padding: 1rem 2rem;
        display: block
    }
}

.article-card {
    background: #fff;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease
}

.article-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2)
}

.article-image {
    width: 100%;
    height: 200px;
    object-fit: cover
}

.article-content {
    padding: 1.5rem
}

.article-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: #2D2D2D
}

.article-excerpt {
    color: #666;
    line-height: 1.6;
    margin-bottom: 1rem
}

.article-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: #999;
    font-size: 0.875rem
}

.code-box {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 1rem;
    padding: 1.5rem;
    color: #fff;
    text-align: center;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
    transition: all 0.3s ease
}

.code-box:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.6)
}

.code-text {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: 2px
}

.code-reward {
    font-size: 0.875rem;
    opacity: 0.9
}

.guide-item {
    background: #fff;
    border-left: 4px solid #7B68EE;
    padding: 1.5rem;
    margin-bottom: 1rem;
    border-radius: 0.5rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease
}

.guide-item:hover {
    transform: translateX(8px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15)
}

.guide-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #7B68EE
}

.guide-content {
    color: #666;
    line-height: 1.8
}

.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 2rem
}

.page-link {
    padding: 0.5rem 1rem;
    background: #fff;
    color: #2D2D2D;
    text-decoration: none;
    border-radius: 0.5rem;
    transition: all 0.3s ease
}

.page-link:hover {
    background: #7B68EE;
    color: #fff
}

.page-link.active {
    background: #7B68EE;
    color: #fff
}