/* ========== 全局重置 ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    color: #f0f4f8;
    background-color: #0a0e17;
}

a {
    text-decoration: none;
    color: inherit;
}

/* ========== 背景视频 ========== */
.video-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
}

.bg-video {
    width: 100%;
    height: 100%;
    /* 运维说明：cover模式保证视频铺满全屏，不同比例视频会自动裁切居中，不变形 */
    object-fit: cover;
    object-position: center;
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, rgba(10,14,23,0.92) 0%, rgba(10,14,23,0.45) 48%, rgba(10,14,23,0.78) 100%);
}

/* ========== 鼠标跟随圆圈 ========== */
.cursor-follower {
    position: fixed;
    width: 42px;
    height: 42px;
    border: 2px solid rgba(148, 163, 184, 0.5);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    transition: width 0.2s ease, height 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
    backdrop-filter: blur(4px);
}

.cursor-follower.active {
    width: 28px;
    height: 28px;
    background-color: rgba(56, 189, 248, 0.45);
    border-color: rgba(56, 189, 248, 0.9);
}

@media (hover: none) and (pointer: coarse) {
    .cursor-follower {
        display: none;
    }
}

/* ========== 进入提示浮窗 ========== */
.tip-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.tip-modal.hidden {
    opacity: 0;
    visibility: hidden;
}

.tip-content {
    padding: 32px 48px;
    background-color: rgba(15, 23, 42, 0.92);
    border: 1px solid rgba(148, 163, 184, 0.2);
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.tip-text {
    font-size: 18px;
    font-weight: 500;
    margin-bottom: 12px;
    color: #e2e8f0;
}

.tip-countdown {
    font-size: 14px;
    color: #94a3b8;
}

.tip-countdown span {
    color: #38bdf8;
    font-weight: 600;
}

/* ========== 跳转过渡遮罩 ========== */
.transition-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #0a0e17;
    z-index: 9998;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.transition-overlay.show {
    opacity: 1;
}

/* ========== 主容器布局（电脑端默认样式） ========== */
.main-container {
    position: relative;
    z-index: 1;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 6%;
    transform-style: preserve-3d;
}

/* 左侧面板：占25%宽度，品牌+介绍+页脚垂直分布 */
.left-panel {
    width: 25%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 60px 0;
    transform-style: preserve-3d;
}

.brand-wrap {
    perspective: 1000px;
}

/* 横版Logo容器 */
.brand-image-placeholder {
    width: 360px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    transform: translateZ(24px);
}

.brand-logo {
    width: 100%;
    height: auto;
    object-fit: contain;
    display: block;
}

.site-subtitle {
    font-size: 24px;
    font-weight: 500;
    letter-spacing: 4px;
    color: #cbd5e1;
    transform: translateZ(12px);
    margin-left: 4px;
}

.intro-wrap {
    margin: 36px 0;
    perspective: 1000px;
}

.intro-text {
    font-size: 15px;
    line-height: 2;
    color: #cbd5e1;
    margin-bottom: 4px;
    transform: translateZ(16px);
}

.slogan {
    margin-top: 24px;
    font-size: 14px;
    letter-spacing: 2px;
    color: #38bdf8;
    transform: translateZ(10px);
}

.site-footer {
    font-size: 12px;
    color: #64748b;
    line-height: 1.8;
}

/* ========== 右侧按钮面板（电脑端：2行3列网格） ========== */
.right-panel {
    width: 65%;
    flex: none;
    display: flex;
    /* 运维说明：改为center可居中，flex-end可靠右，当前偏右对齐匹配截图布局 */
    justify-content: flex-end;
    perspective: 1200px;
}

.btn-list {
    display: grid;
    /* 电脑端3列布局，6个按钮自动排成2行 */
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    width: 100%;
    max-width: 780px;
}

/* 按钮基础样式 */
.service-btn {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 20px 22px;
    background-color: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    backdrop-filter: blur(10px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateZ(0);
    transform-style: preserve-3d;
    cursor: pointer;
}

.service-btn:hover {
    transform: translateZ(18px) translateY(-3px);
    background-color: rgba(255, 255, 255, 0.12);
    border-color: rgba(56, 189, 248, 0.45);
    box-shadow: 
        0 12px 32px rgba(0, 0, 0, 0.4),
        0 0 20px rgba(56, 189, 248, 0.15);
}

.btn-icon {
    font-size: 20px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(56, 189, 248, 0.1);
    border-radius: 8px;
    transform: translateZ(12px);
}

.btn-text {
    font-size: 15px;
    font-weight: 500;
    color: #e2e8f0;
    transform: translateZ(8px);
}

/* ========== 响应式适配（平板+移动端，布局完全保留原有逻辑） ========== */
/* 平板端：宽度≤1024px，上下布局，按钮2列 */
@media screen and (max-width: 1024px) {
    html, body {
        overflow-y: auto;
    }
    
    .main-container {
        flex-direction: column;
        padding: 40px 5%;
        justify-content: flex-start;
        gap: 32px;
    }

    .left-panel {
        width: 100%;
        height: auto;
        padding: 0;
        text-align: center;
    }

    .brand-image-placeholder {
        width: 280px;
        margin: 0 auto 16px;
        justify-content: center;
    }

    .site-subtitle {
        font-size: 20px;
        margin-left: 0;
    }

    .site-footer {
        display: none;
    }

    /* 平板端按钮区恢复居中，2列布局 */
    .right-panel {
        width: 100%;
        justify-content: center;
    }

    .btn-list {
        max-width: 420px;
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
}

/* 移动端：宽度≤640px，按钮1列 */
@media screen and (max-width: 640px) {
    .brand-image-placeholder {
        width: 220px;
    }

    .site-subtitle {
        font-size: 18px;
        letter-spacing: 2px;
    }

    .tip-content {
        padding: 24px 32px;
        margin: 0 20px;
    }

    .btn-list {
        grid-template-columns: 1fr;
    }
}

/* ========== 安全防护样式 ========== */
/* 全局禁止文本选中，防止用户复制网页文字内容 */
body {
    user-select: none;
    -webkit-user-select: none; /* 兼容Chrome、Safari */
    -moz-user-select: none;    /* 兼容Firefox */
    -ms-user-select: none;     /* 兼容IE、Edge旧版 */
}

/* 禁止图片、视频拖拽到本地保存 */
img, video {
    -webkit-user-drag: none;   /* 兼容Webkit内核浏览器 */
    user-drag: none;
}

/* 取消文本选中高亮效果 */
::selection {
    background: transparent;
    color: inherit;
}

::-moz-selection {
    background: transparent;
    color: inherit;
}