:root {
    --bg: #0b0c10; /* deep background similar to dark hero */
    --card: #121319; /* card background */
    --muted: #9aa3af; /* secondary text */
    --text: #f5f7fa; /* primary text */
    --accent: #3b82f6; /* blue accent */
    --ring: rgba(59,130,246,.35);
    --radius: 16px;
    --shadow: 0 10px 30px rgba(0,0,0,.35);
}

/* 主容器 */
.container {
    display: flex;
    flex-direction: column;
    position: relative;
    background: var(--nav-bg);
    margin: auto;
    max-width: 1856px;
    width: 100%;
}

.navbar-container {
    display: flex;
    flex-direction: column;
}

/* 内容区域 */
.content {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    color: var(--text-light);
    backdrop-filter: blur(10px);
    background: linear-gradient(to bottom, 
        rgba(46,46,56,0.8) 0%, 
        rgba(46,46,56,1) 30px);
    padding: 90px 0 32px 0;
    z-index: 0;
    box-shadow: 0 .625rem 1.875rem rgba(0,0,0,0.3);
}

.img-container {
    position: relative;
    width: 100%; /* 防止溢出 */
    height: 100%;
    display: flex;   /* 新增：启用flex布局 */
    justify-content: center; /* 水平居中内容 */
    align-items: center; /* 垂直居中内容 */
    margin: 0 auto; /* 双保险水平居中 */
    overflow: hidden;
    /* margin-top: 6.875rem;  与导航栏重叠 */
    z-index: 1;
}

.img-container img {
    display: block; /* 消除图片底部间隙 */
    min-height: 425px;
    max-width: 100%; /* 响应式适配 */
    height: 100%;
    object-fit: cover;
    /* 创建下部分虚化效果 */
    -webkit-mask-image: linear-gradient(to bottom, 
        rgba(46,46,56,1) 0%, 
        rgba(46,46,56,1) 70%, 
        rgba(46,46,56,0) 100%);
    mask-image: linear-gradient(to bottom, 
        rgba(46,46,56,1) 0%, 
        rgba(46,46,56,1) 70%, 
        rgba(46,46,56,0) 100%);
}

.insImgA1 {
    display: flex;
    position: absolute;
    bottom: 200px;
    left: 70px;
    padding: 0;
    max-width: 25rem;
    backdrop-filter: blur(1px);
    z-index: 100;
    color: var(--text-light);
    font-size: 3.5rem;
    font-weight: 700;
}

.insImgA2 {
    display: flex;
    position: absolute;
    bottom: 130px;
    left: 70px;
    padding: 0 15px;
    max-width: 50rem;
    backdrop-filter: blur(1px);
    z-index: 100;
    color: var(--text-light);
    font-size: 1rem;
    font-weight: 300;
    line-height: 1.8;
    border-left: 2px solid var(--primary);
}

.content h1 {
    color: var(--primary);
    font-size: 2.5rem;
    font-weight: 500;
    margin-bottom: 1.25rem;
}

.content p1 {
    color: var(--text-light);
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: .625rem;
}

.content p2 {
    color: var(--text-light);
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: .625rem;
}

.Ins {
    position: relative;
    display: flex;
    flex-direction: column;
    padding: 40px 40px 0 40px;
}

.section-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 16px;
    padding: 0 40px;
    margin-bottom: 24px;
}

.section-head h2 {
    font-size: clamp(1.5rem, 2.5vw, 2rem);
    margin: 0;
    letter-spacing: 0.2px;
    font-weight: 500;
    color: var(--primary);
}

.section-head a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
}

.grid {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 20px;
    padding: 0 80px;
    margin-bottom: 60px;
}

/* 3-up on desktop, 2-up tablet, 1-up mobile */
.post-card { 
    grid-column: span 4; 
}

.card {
    display: grid;
    grid-template-rows: auto 1fr auto;
    background: radial-gradient(1200px 600px at 20% -10%, rgba(59, 130, 246, 0.12), transparent 60%), var(--card);
    border: 1px solid rgba(255,255,255,.06);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    height: 100%;
    transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.card:hover { 
    transform: translateY(-4px); 
    box-shadow: 0 18px 40px rgba(0,0,0,.5); 
    border-color: rgba(59,130,246,.45); 
}

.thumb { 
    aspect-ratio: 16/9; 
    width: 100%; 
    object-fit: cover; 
    display: block; 
    background: #0f141c; 
}

.contentCard { 
    padding: 16px 18px 4px; 
}

.title { 
    font-size: 1.05rem; 
    line-height: 1.35; 
    margin: 0 0 8px; 
}

.title a { 
    color: var(--text); 
    text-decoration: none; 
}

.title a:hover { 
    text-decoration: underline; 
    text-underline-offset: 3px; 
}

.excerpt { 
    color: var(--muted); 
    margin: 5px 0 14px; 
    font-size: .98rem; 
}

.meta { 
    display: flex; 
    align-items: center; 
    justify-content: space-between; 
    gap: 10px; 
    padding: 12px 18px 16px; 
    border-top: 1px solid rgba(255,255,255,.06);
}

.author { 
    display: inline-flex; 
    align-items: center; 
    gap: 10px; 
    min-width: 0; 
}

.avatar { 
    width: 34px; 
    height: 34px; 
    border-radius: 50%; 
    background: #1b2230; 
    border: 1px solid rgba(255,255,255,.08); 
    object-fit: cover; 
}

.who { 
    display: grid; 
}

.name { 
    font-weight: 600; 
    font-size: .95rem; 
    line-height: 1.1; 
}

.date { 
    color: var(--muted); 
    font-size: .85rem; 
}

.pill {
    border: 1px solid rgba(255,255,255,.12);
    padding: 6px 10px;
    border-radius: 999px;
    font-size: .85rem;
    color: var(--muted);
    background: rgba(255,255,255,.02);
    white-space: nowrap;
}

/* Accessibility focus ring */
a:focus-visible, button:focus-visible { 
    outline: 2px solid var(--ring); 
    outline-offset: 2px; 
    border-radius: 6px; 
}

.post-card a:hover { 
    color: var(--primary); 
}

.stats { 
    display:flex; 
    align-items:center; 
    gap:18px; 
    padding: 10px 18px 16px; 
    border-top: 1px dashed rgba(255,255,255,.08); 
    flex-wrap: wrap; 
}

.stat { 
    display:inline-flex; 
    align-items:center; 
    gap:8px; 
    color:var(--muted); 
    font-size:.95rem; 
}

.stat .label { 
    opacity:.95; 
}

.stat b.num { 
    font-weight:700; 
    color:var(--text); 
    min-width: 1.5ch; 
    text-align:right; 
}

.icon { 
    width:18px; 
    height:18px; 
    display:inline-flex; 
    align-items:center; 
    justify-content:center;
}

.footer-aboutus {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    position: relative;
    max-width: 116rem;
    vertical-align: top;
    margin: 0 auto;
    z-index: 200;
}

@media (max-width: 1344px) {
    .content h1 {
        font-size: 2rem;
        margin-bottom: 1rem;
    }
    .content p1, .content p2 {
        font-size: 0.875rem;
        margin-bottom: .625rem;
    }

    .menu-content-index2 {
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 20px;
    }
}

@media (max-width: 1152px) {
    .serImgA2 {
        font-size: 18px;
        line-height: 1.5;
        bottom: 80px;
    }

    .content h1 {
        font-size: 1.4rem;
        margin-bottom: 1rem;
    }

    .content p1, .content p2 {
        font-size: 0.7rem;
        margin-bottom: .225rem;
    }

    .aboImgA2 {
        font-size: 18px;
        line-height: 1.5;
    }

    .content h154 {
        font-size: 18px;
    }
}

@media (max-width: 900px) {
    .insImgA1, .serImgA1, .expImgA1, .aboImgA1 {
        font-size: 50px;
        bottom: 240px;
    }

    .insImgA2 {
        font-size: 14px;
        line-height: 1.5;
    }

    .serImgA2 {
        font-size: 14px;
        line-height: 1.5;
        bottom: 60px;
    }

    .expImgA2 {
        font-size: 14px;
        line-height: 1.5;
        bottom: 45px;
        min-width: 280px;
    }

    .aboImgA2 {
        font-size: 14px;
        line-height: 1.5;
        bottom: 90px;
    }

    .link-columnI1.sideL {
        display: none !important;
    }

    .link-columnI1.center {
        display: none !important;
    }

    .link-columnI1.sideR {
        display: none !important;
    }

    .indIns {
        padding: 40px 40px 0 0;
    }

    .section-head {
        padding: 0 15px;
    }

    .grid {
        padding: 0 15px;
        grid-template-columns: repeat(1, minmax(0, 1fr));
    }

    .indPurpose {
        flex-direction: column-reverse;
        padding: 20px 0;
        gap: 20px;
    }

    .indPurpose1 {
        width: 100%;
        justify-content: center;
        padding: 0 15px;
    }

    .btn-explore {
        margin: 0 auto;
    }

    .indPurpose2 {
        width: 100%;
        padding: 0 15px;
    }

    .indAlliances .section-head {
        padding: 20px 15px 0 15px !important;
    }

    .logo-grid {
        padding: 0;
        gap: 0;
    }
}