.hero-bg {
    background-image: url('https://filetx.3633yx.com/240625-e340585cfafb486a8902ee384890b050.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed
}

.hero-overlay {
    background: linear-gradient(135deg, rgba(123, 104, 238, 0.9) 0%, rgba(76, 175, 80, 0.8) 100%)
}

.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;
    position: relative;
    overflow: hidden
}

.code-box::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: shine 3s infinite
}

@keyframes shine {
    0% {
        transform: rotate(0deg)
    }
    100% {
        transform: rotate(360deg)
    }
}

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

.code-box.backend {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%)
}

.code-box.backend::before {
    background: radial-gradient(circle, rgba(255, 255, 255, 0.15) 0%, transparent 70%)
}

.code-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
    opacity: 0.9
}

.code-label {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem
}

.code-text {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: 2px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    position: relative;
    z-index: 1
}

.code-reward {
    font-size: 0.875rem;
    opacity: 0.9;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1
}

.code-note {
    font-size: 0.75rem;
    opacity: 0.8;
    margin-top: 0.5rem;
    position: relative;
    z-index: 1
}

.copy-btn {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: #fff;
    padding: 0.5rem 1.5rem;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    z-index: 1;
    font-size: 0.875rem
}

.copy-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.05)
}

.instruction-box {
    background: linear-gradient(145deg, #ffffff 0%, #f8f9fa 100%);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(123, 104, 238, 0.1)
}

.instruction-item {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(123, 104, 238, 0.1)
}

.instruction-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none
}

.instruction-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #7B68EE 0%, #9B59B6 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.5rem;
    font-weight: 700;
    flex-shrink: 0;
    box-shadow: 0 4px 15px rgba(123, 104, 238, 0.4)
}

.instruction-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #2D2D2D
}

.instruction-desc {
    color: #666;
    line-height: 1.6
}

.notice-card {
    background: linear-gradient(145deg, #ffffff 0%, #f8f9fa 100%);
    border-radius: 1rem;
    padding: 1.5rem;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(123, 104, 238, 0.1);
    transition: all 0.3s ease
}

.notice-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(123, 104, 238, 0.2);
    border-color: rgba(123, 104, 238, 0.3)
}

.notice-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #7B68EE 0%, #9B59B6 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 1.5rem;
    color: #fff;
    box-shadow: 0 4px 15px rgba(123, 104, 238, 0.4)
}

.notice-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: #2D2D2D
}

.notice-desc {
    color: #666;
    line-height: 1.6;
    font-size: 0.875rem
}

.section-title {
    position: relative;
    display: inline-block;
    width: 100%
}

.section-title::before {
    content: '';
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, #FFD700 0%, #FFA500 100%);
    border-radius: 2px
}

@media (max-width: 768px) {
    .instruction-item {
        flex-direction: column;
        align-items: center;
        text-align: center
    }

    .instruction-number {
        width: 40px;
        height: 40px;
        font-size: 1.25rem
    }

    .code-text {
        font-size: 1.25rem
    }

    .notice-icon {
        width: 50px;
        height: 50px;
        font-size: 1.25rem
    }
}