body {
    margin: 0;
    font-family: 'Segoe UI', sans-serif;
    background-color: #0e131a;
    color: white;
    overflow-x: hidden;
    cursor: none;
}

.particles {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    pointer-events: none;
    z-index: 0;
}

.cursor {
    position: fixed;
    width: 20px;
    height: 20px;
    border: 2px solid #00f7ff;
    border-radius: 50%;
    pointer-events: none;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 10px #00f7ff, 0 0 20px #00f7ff;
    z-index: 1000;
}

.intro {
    text-align: center;
    padding: 100px 20px 40px;
    position: relative;
    z-index: 1;
}

.intro h1 {
    font-size: 48px;
    font-weight: 600;
}

.intro h1 span {
    color: #00f7ff;
    font-weight: 800;
    text-shadow: 0 0 15px #00f7ff;
}

.ui-container {
    max-width: 800px;
    margin: 0 auto;
    background: rgba(20, 40, 40, 0.8);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    box-shadow: 0 0 25px rgba(0,0,0,0.4);
    overflow: hidden;
    display: flex;
}

.sidebar {
    width: 200px;
    background: rgba(20, 60, 60, 0.5);
    padding: 20px 10px;
}

.sidebar ul {
    list-style: none;
    padding: 0;
}

.sidebar ul li {
    padding: 10px;
    font-size: 14px;
    opacity: 0.8;
    cursor: pointer;
}

.sidebar ul li.active {
    background: rgba(0, 255, 255, 0.1);
    border-radius: 6px;
    opacity: 1;
}

.content {
    flex: 1;
    padding: 20px;
}

.content h2 {
    margin-top: 0;
}

.color-setting {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.color-box {
    width: 20px;
    height: 20px;
    border-radius: 3px;
    border: 1px solid white;
}

.reviews {
    text-align: center;
    padding: 60px 20px;
    position: relative;
    z-index: 1;
}

.review-grid {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    max-width: 900px;
    margin: 0 auto;
}

.review-card {
    background: rgba(20, 40, 40, 0.8);
    padding: 20px;
    border-radius: 12px;
    width: 300px;
    box-shadow: 0 0 15px rgba(0,255,255,0.1);
    text-align: left;
}

.review-card h3 {
    margin: 0 0 10px;
    color: #00f7ff;
}

.stars {
    color: gold;
    font-size: 14px;
}