/* 字体定义 */
@font-face {
    font-family: 'EnFont';
    src: url('fonts/en.woff2') format('woff2'),
         url('fonts/en.woff') format('woff');
    font-display: swap;
}

@font-face {
    font-family: 'ZhReRegular';
    src: url('fonts/zh_reRegular.woff2') format('woff2'),
         url('fonts/zh_reRegular.woff') format('woff');
    font-display: swap;
}

@font-face {
    font-family: 'ZhConRegular';
    src: url('fonts/zh_conRegular.woff2') format('woff2'),
         url('fonts/zh_conRegular.woff') format('woff');
    font-display: swap;
}

/* 定义全局字体变量 */
:root {
    --font-main-zh: ZhReRegular, sans-serif;
    --font-footer-zh: ZhConRegular, sans-serif;
    --font-en: EnFont, 'Arial', sans-serif;
}

/* 重置body默认样式并设置基础字体 */
body {
    margin: 0;
    overflow: hidden;
    background: #000;
    font-family: var(--font-main-zh);
}

/* 自动应用字体类 */
.chinese-text {
    font-family: var(--font-main-zh);
}

.english-text {
    font-family: var(--font-en);
}

/* 创建全屏容器并居中内容 */
#container {
    position: fixed;
    width: 100vw;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 4;
}

/* 创建渐变背景层 */
#gradient-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    transition: background 0.5s ease;
    background: linear-gradient(45deg, #1a1a1a, #000);
}

/* 内容区域样式 */
#content {
    position: relative;
    text-align: center;
    color: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 400px;
}

/* Logo容器样式 */
#logo {
    position: relative;
    width: 200px;
    height: 200px;
    margin-bottom: 2em;
    cursor: pointer;
    transition: filter 0.3s ease;
    flex: 0 0 200px;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Logo默认和悬停状态的共同样式 */
.logo-default, .logo-hover {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 200px;
    height: 200px;
    background-size: 200px 200px;
    background-repeat: no-repeat;
    background-position: center center;
    transition: opacity 0.3s ease;
    object-fit: contain;
}

/* Logo默认状态样式 */
.logo-default {
    background-image: url('img/ben.svg');
    opacity: 1;
    z-index: 2;
}

/* Logo悬停状态样式 */
.logo-hover {
    background-image: url('img/ben.svg');
    opacity: 0;
    z-index: 1;
}

/* 悬停时默认logo消失 */
#logo:hover .logo-default {
    opacity: 0;
}

/* 悬停时显示悬停logo */
#logo:hover .logo-hover {
    opacity: 1;
}

/* 标题文字样式 */
.title-text {
    font-size: 2em;
    text-shadow: 0 0 10px rgba(255,255,255,0.5);
    transition: all 0.3s ease, opacity 0.3s ease;
    height: 100px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.title-text span {
    display: block;
    line-height: 1.2;
}