:root {
    --panel-bg: #111111;
    --text-color: #e0e0e0;
    --accent: #4caf50;
    --border: #333333;
    --btn-bg: #1a1a1a;
    --btn-hover: #2a2a2a;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

html {
    overscroll-behavior: none;
    -webkit-overflow-scrolling: auto;
}

body {
    background-color: #0d0d0d;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    min-height: 100dvh;
    font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    padding: 10px;
    overscroll-behavior: none;
    touch-action: manipulation;
    -webkit-user-select: none;
    user-select: none;
}