body {
    margin: 0;  /* 新增 */
    padding: 0; /* 新增 */
    background-color: #ffffff;
    /* background: 
        url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='300' height='100'><text x='0' y='100' fill='rgba(100,100,100,0.1)' font-size='50' transform='rotate(-10)'>h265web.js</text></svg>"), linear-gradient(#e9e9e9, #e9e9e9),
        repeating-linear-gradient(
            45deg,
            transparent,
            transparent 10px,
            #e9e9e9 10px,
            #e9e9e9 20px
        ); */
}

.page-container {
    min-height: 55vh; /* 新增 */
}

.go_player_demo_button {
    width: 40%;
    height: 50px;
    margin: 0 20px;
    /* 新增样式 */
    border-radius: 12px;  /* 圆角半径 */
    /*background: linear-gradient(145deg, #000000, rgb(0, 0, 0));*/
    background: linear-gradient(145deg, #ff0101, rgb(255, 1, 1));
    border: 1px solid rgba(255,255,255,0.2); /* 半透明边框 */
    box-shadow: 0 4px 8px rgba(0,0,0,0.2); /* 投影效果 */
    font-size: 1.2rem;  /* 字体大小 */
    font-weight: 300;
    color: white;
    letter-spacing: 1px;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1); /* 平滑过渡 */
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    /* -webkit-tap-highlight-color: transparent; */
}

.go_player_demo_button:hover {
    background: linear-gradient(145deg, #ff0000, rgb(255, 0, 0)); /* 渐变背景 */
    box-shadow: 0 6px 12px rgba(0,0,0,0.3); /* 悬停时阴影加深 */
    transform: translateY(-2px); /* 轻微上浮效果 */
    color: rgb(255, 255, 0);
    /* font-weight: 600; */
    /* font-size: 1.5rem; */
    /* font-weight: 600; */
}

.go_player_demo_button:active {
    box-shadow: 0 2px 4px rgba(0,0,0,0.2); /* 点击时阴影缩小 */
    transform: translateY(5px); /* 按下效果 */
    /* font-size: 1.5rem; */
    /* font-weight: 600; */
}


/* 
 *
 *
 * NAV
 *
 *
 */
.top-nav {
    width: 100%;
    min-height: 8vh;
    max-height: 50px;
    background-color: black;
}

.top-nav-left {
    min-height: 5vh;
    max-height: 50px;
    float: left;
    font-weight: 400;
}

.top-nav-right {
    min-height: 5vh;
    max-height: 50px;
    float: right;
    font-weight: 400;
}

.github_link {
    color: #e9e9e9;
    text-decoration: none;
}

.github_link:hover {
    color: rgb(153, 204, 22);
    /* text-decoration: underline; */
}

/* 
 *
 *
 * Used By 用户列表 
 *
 *
 */
.show-users-container {
    width: 100%;
    padding-top: 15px;
    margin-top: 5px;
    /* border-bottom: 1px solid rgba(0,0,0,0.2); */
    background: rgba(241, 239, 239, 0.1);
}

.partners-grid {
    width: 100%;
    padding: 20px 0;
    margin: 10px auto;
    /* max-width: 1200px; */
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 30px;
    padding: 10px;
}

.grid-item {
    /* background: rgba(214, 206, 206, 0.4); */
    border-radius: 12px;
    transition: transform 0.3s ease;
    overflow: hidden;
}

.grid-item-features {
    border: 1px solid #e9e9e9
}

.grid-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
}

.grid-item a {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 10px;
    text-decoration: none;
}

.grid-item img {
    height: 60px;
    width: auto;
    margin-bottom: 15px;
    filter: grayscale(20%);
    transition: filter 0.3s;
}

.grid-item-aspect-img img {
    object-fit: cover; /* 保持比例裁剪 */
    aspect-ratio: 16/9;
    /* 新增渐变遮罩 */
    /* mask-image: linear-gradient(
        to bottom, 
        rgba(0,0,0,1) 70%, 
        rgba(0,0,0,0) 100%
    ); */
    /* 修改为组合渐变 */
    -webkit-mask-image: 
        linear-gradient(to right, rgba(0,0,0,1) 80%, rgba(0,0,0,0)),
        linear-gradient(to left, rgba(0,0,0,1) 80%, rgba(0,0,0,0)),
        linear-gradient(to bottom, rgba(0,0,0,1) 90%, rgba(0,0,0,0));
    mask-image: 
        linear-gradient(to right, rgba(0,0,0,1) 80%, rgba(0,0,0,0)),
        linear-gradient(to left, rgba(0,0,0,1) 80%, rgba(0,0,0,0)),
        linear-gradient(to bottom, rgba(0,0,0,1) 90%, rgba(0,0,0,0));
    
    /* 新增混合模式 */
    mask-composite: intersect;
    -webkit-mask-composite: source-in;

    /* 保持原有过渡效果 */
    /* filter: grayscale(20%); */
    transition: all 0.3s;
}

.grid-item:hover img {
    filter: grayscale(10%);
}

.grid-item span {
    color: #333;
    font-size: 1.1em;
    font-weight: 500;
    text-align: center;
    line-height: 1.4;
}

@media (max-width: 768px) {
    .grid-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

/*
 *
 * Features
 *
 */
.show-features-container {
    width: 100%;
    padding-top: 15px;
    margin-top: 5px;
    background: rgba(255,255,255,0.5);
}

.gbottom-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    padding: 20px;
}

.gfeat-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    padding: 20px;
}

.gfeat-item {
    min-height: 70px;
    display: flex;
    justify-content: center;
    align-items: center;
}

/*
 *
 * icon yes no
 *
 */
.feature-status {
    position: relative;
    padding-left: 28px;
    display: inline-block;
    /* font-size: 1.1em; */
    /* margin: 0px auto; */
}

.feature-status::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 30px;
    height: 30px;
    border-radius: 50%;
    border: 2px solid currentColor;
}

/* 对勾图标 */
.feature-status.yes::before {
    background: #0ddd14;
    border-color: #07880d;
}
.feature-status.yes::after {
    content: '';
    position: absolute;
    left: 10px;
    top: 50%;
    width: 10px;
    height: 15px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: translateY(-65%) rotate(45deg);
}

/* 叉号图标 */
.feature-status.no::before {
    background: #000000;
    border-color: #000000;
}
.feature-status.no::after {
    content: '✕';
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: white;
    font-size: 20px;
    font-weight: bold;
    line-height: 1;
}

/* 不确定图标 */
.feature-status.unsure::before {
    background: #f4c83665;
    border-color: #8fd32f;
}
.feature-status.unsure::after {
    content: '?';
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: white;
    font-size: 20px;
    font-weight: bold;
    line-height: 1;
}

/*
 *
 * Features
 *
 */
 .show-contact-container {
    width: 100%;
    padding-top: 15px;
    margin-top: 5px;
    background: rgba(255,255,255,1.0);
}

/* 
 *
 *
 * BANNER
 *
 *
 */
/* .partners-carousel {
    width: 100%;
    overflow: hidden;
    padding: 20px 0;
    background: rgba(255,255,255,0.1);
    margin: 30px 0;
}

.carousel-track {
    display: flex;
    animation: scroll 40s linear infinite;
    gap: 50px;
    padding: 0 100%;
}

.carousel-track img {
    height: 40px;
    width: auto;
    filter: grayscale(100%);
    transition: all 0.3s;
}

.carousel-track img:hover {
    filter: grayscale(0);
    transform: scale(1.1);
}

@keyframes scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
} */