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

body {
    width: 100%;
    height: 100vh;
    overflow: hidden;
}

.slider {
    position: relative;
    width: 100%;
    height: 100vh;
}

.track {
    display: flex;
    width: 400%;
    height: 100%;
    transition: transform 0.6s ease;
}

.slide {
    width: 25%;
    height: 100%;
    flex-shrink: 0;
}

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

.arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    width: 48px;
    height: 48px;
    border: none;
    background: rgba(0, 0, 0, 0.35);
    color: #fff;
    font-size: 24px;
    line-height: 48px;
    text-align: center;
    cursor: pointer;
    border-radius: 50%;
}

.arrow:hover {
    background: rgba(0, 0, 0, 0.6);
}

.arrow-prev {
    left: 24px;
}

.arrow-next {
    right: 24px;
}

.dots {
    position: absolute;
    left: 50%;
    bottom: 24px;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    gap: 10px;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: background 0.3s ease;
}

.dot.active {
    background: #fff;
}