:root {
            --background: #095a9f;
            --surface: #111317;
            --border: #ccc;
            --primary: #fff;
            --primary-hover: #60a5fa;
            --primary-soft: rgba(59, 130, 246, 0.1);
            --foreground: #222;
            --muted: #9ca3af;
            --secondary-soft: rgba(255, 255, 255, 0.04);
            --card-bg: #fafafa;
            --transition: all 0.2s cubic-bezier(0.2, 0, 0, 1);
        }
 * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
      .main-container2 {
            width: 100%;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }

        @media (min-width: 640px) {
            .main-container2 { max-width: 640px; }
        }
        @media (min-width: 768px) {
            .main-container2 { max-width: 768px; }
        }
        @media (min-width: 1024px) {
            .main-container2 { max-width: 1024px; }
        }
        @media (min-width: 1280px) {
            .main-container2 { max-width: 1280px; }
        }
        @media (min-width: 1536px) {
            .main-container2 { max-width: 1536px; }
        }


        .card {
            border: 1px solid var(--border);
            border-radius: 1.5rem;
            background: #fff;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
            transition: var(--transition); margin:40px 0
        }

        .card-glow {
            border-color: rgba(59, 130, 246, 0.2);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 2rem;
            padding: 0 0.75rem;
            border-radius: 9999px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.1em;
            text-transform: uppercase;
            color: var(--primary);
            width: fit-content; background: var(--background)
        }

        .stats-grid {
            display: grid;
            gap: 0.75rem;
            grid-template-columns: repeat(2, 1fr);
            margin-top: 1.5rem;
        }

        @media (min-width: 640px) {
            .stats-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(5, 1fr);
            }
        }

        .stat-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 1rem;
            padding: 1rem;
            transition: var(--transition);
        }
        .stat-card:hover {
            border-color: rgba(59, 130, 246, 0.3);
        }

        /* 字母索引导航 */
        .alpha-nav {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-top: 1rem;
        }
        .alpha-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 2.8rem;
            height: 2.8rem;
            border-radius: 0.75rem;
            border: 1px solid var(--border);
            background: var(--background);
            color: #fff;
            font-weight: 600;
            font-size: 0.875rem;
            text-decoration: none;
            transition: var(--transition);
        }
        .alpha-link:hover {
            border-color: var(--textcolor);
            color: var(--primary);
            background: var(--textcolor);
        }

        /* 平台列表网格 */
        .platform-grid {
            display: grid;
            gap: 0.75rem;
            grid-template-columns: 1fr;
            margin-top: 1rem;
        }
        @media (min-width: 640px) {
            .platform-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (min-width: 1024px) {
            .platform-grid { grid-template-columns: repeat(3, 1fr); }
        }
        @media (min-width: 1280px) {
            .platform-grid { grid-template-columns: repeat(5, 1fr); }
        }
    .platform-grid2 {
            display: grid;
            gap: 0.75rem;
            grid-template-columns: 1fr;
            margin-top: 1rem;
        }
        @media (min-width: 640px) {
            .platform-grid2 { grid-template-columns: repeat(1, 1fr); }
        }
        @media (min-width: 1024px) {
            .platform-grid2 { grid-template-columns: repeat(2, 1fr); }
        }
        @media (min-width: 1280px) {
            .platform-grid2 { grid-template-columns: repeat(4, 1fr); }
        }
        .platform-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: var(primary);
            border: 1px solid var(--border);
            border-radius: 1rem;
            padding: 1rem;
            text-decoration: none;
            transition: var(--transition);
            gap: 0.75rem;
        }
        .platform-item:hover {
            border-color: rgba(59, 130, 246, 0.3);
            background: rgba(59, 130, 246, 0.05);
            transform: translateY(-1px);
        }
        .platform-info {
            flex: 1;
        }
        .platform-title {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--foreground);
            transition: color 0.2s;
        }
        .platform-item:hover .platform-title {
            color: var(--background);
        }
        .platform-desc {
            font-size: 0.8rem;
            color: var(--muted);
            margin-top: 0.25rem;
        }
        .arrow-icon {
            width: 1rem;
            height: 1rem;
            color: #666;
            transition: transform 0.2s, color 0.2s;
            flex-shrink: 0;
        }
        .platform-item:hover .arrow-icon {
            transform: translateX(4px);
            color: var(--primary);
        }

        .tag-primary, .tag-more, .tag-supplement {
            display: inline-flex;
            align-items: center;
            font-size: 0.65rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            padding: 0.2rem 0.6rem;
            border-radius: 999px;
            text-transform: uppercase;
            margin-bottom: 0.5rem;
        }
        .tag-primary {
            background: var(--primary-soft);
            color: var(--primary);
        }
        .tag-more {
            background: var(--background);
            color: #fff;
        }
        .tag-supplement {
            background: rgba(156, 163, 175, 0.15);
            color: #a1a9b6;
        }

        /* 章节分隔 */
        .section-header {
            display: flex;
            align-items: baseline;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.75rem;
            border-bottom: 1px solid var(--border);
            padding-bottom: 0.75rem;
            margin-bottom: 1rem;
        }
        .letter-section {
            scroll-margin-top: 2rem;
        }
        .back-to-top {
            font-size: 0.875rem;
            font-weight: 500;
            color:#444;
            text-decoration: none;
            transition: opacity 0.2s;
        }
        .back-to-top:hover {
            color: var(--primary-hover);
        }

        h1 { font-size: 1.875rem; font-weight: 800; letter-spacing: -0.02em; }
        h2 { font-size: 1.5rem; font-weight: 700; }
        h3 { font-size: 1.125rem; font-weight: 600; }
        @media (min-width: 768px) {
            h1 { font-size: 2.25rem; }
        }
        .text-muted { color: var(--muted); }
        .mb-2 { margin-bottom: 0.5rem; }
        .mb-4 { margin-bottom: 1rem; }
        .mt-6 { margin-top: 1.5rem; }
        .mt-8 { margin-top: 2rem; }

        .mt-10 { margin-top: 2.5rem; }
        .flex-between { display: flex; justify-content: space-between; align-items: center; }
        .gap-2 { gap: 0.5rem; }
        .gap-3 { gap: 0.75rem; }
		
		
		
		  .hero-gradient {
            position: relative;
            overflow: hidden;
            background: linear-gradient(135deg, #0f1117 0%, #111827 100%);
        }
        .gradient-blur-1 {
            position: absolute;
            top: -33%;
            right: -25%;
            height: 28rem;
            width: 28rem;
            border-radius: 50%;
            opacity: 0.2;
            filter: blur(120px);
            background: radial-gradient(circle, #FF6B47 0%, transparent 70%);
        }
        .gradient-blur-2 {
            position: absolute;
            bottom: -33%;
            left: -25%;
            height: 24rem;
            width: 24rem;
            border-radius: 50%;
            opacity: 0.15;
            filter: blur(100px);
            background: radial-gradient(circle, #FFB347 0%, transparent 70%);
        }

        
        .tag {
            display: inline-flex;
            align-items: center;
            padding: 0.4rem 0.8rem;
            border-radius: 9999px;
            font-size: 0.65rem;
            font-weight: 700;
            text-transform: uppercase;
        }
        .tag-hot {
            background: rgba(255, 255, 255, 0.1);
            color: #eee;
        }
        .tag-primary {
            background: var(--primary-soft);
            color: var(--primary);
        }

        /* 统计卡片 */
        .stat-grid {
            display: grid;
            gap: 0.75rem;
            grid-template-columns: repeat(2, 1fr);
            margin-top: 1.5rem;
        }
        @media (min-width: 640px) {
            .stat-grid { grid-template-columns: repeat(3, 1fr); }
        }
        @media (min-width: 1024px) {
            .stat-grid { grid-template-columns: repeat(5, 1fr); }
        }
        .stat-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 1rem;
            padding: 1rem;
        }

        /* 按钮 */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            min-height: 2.75rem;
            padding: 0.5rem 1.25rem;
            border-radius: 0.75rem;
            background: var(--textcolor);
            color: white;
            font-weight: 600;
            font-size: 0.875rem;
            text-decoration: none;
            transition: var(--transition);
        }
        .btn-primary:hover {
            background: #2563eb;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            min-height: 2.75rem;
            padding: 0.5rem 1.25rem;
            border-radius: 0.75rem;
            background: rgba(255,255,255,0.05);
            border: 1px solid rgba(255,255,255,0.1);
            color: white;
            font-weight: 600;
            font-size: 0.875rem;
            text-decoration: none;
            transition: var(--transition);
        }
        .btn-outline:hover {
            background: rgba(255,255,255,0.1);
        }

 

        /* 商品卡片 */
        .product-grid {
            display: grid;
            gap: 1rem;
            grid-template-columns: repeat(2, 1fr);
            margin-top: 1.5rem;
        }
        @media (min-width: 768px) {
            .product-grid { grid-template-columns: repeat(3, 1fr); }
        }
        @media (min-width: 1280px) {
            .product-grid { grid-template-columns: repeat(4, 1fr); }
        }
        .product-card {
            border: 1px solid var(--border);
            border-radius: 0.75rem;
            overflow: hidden;
            transition: var(--transition);
            text-decoration: none;
            display: block;
        }
        .product-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(0,0,0,0.3);
        }
        .product-image {
            aspect-ratio: 1 / 1;
            background: #1a1c22;
            position: relative;
            overflow: hidden;
        }
        .product-image img {
            width: 100%;
            height: 100%;

            object-fit: cover;
            transition: transform 0.3s;
        }
        .product-card:hover .product-image img {
            transform: scale(1.05);
        }
        .product-badge {
            position: absolute;
            top: 0.5rem;
            left: 0.5rem;
            background: #ef4444;
            color: white;
            font-size: 0.7rem;
            font-weight: 600;
            padding: 0.2rem 0.5rem;
            border-radius: 9999px;
            display: inline-flex;
            align-items: center;
            gap: 0.2rem;
        }

        /* 折叠面板 */
        details {
            border: 1px solid var(--border);
            border-radius: 1rem;
            background: var(--card-bg);
            padding: 1rem 1.25rem;
        }
        details summary {
            cursor: pointer;
            list-style: none;
            font-weight: 600;
            font-size: 0.875rem;
            color: var(--foreground);
        }
        details summary::-webkit-details-marker {
            display: none;
        }
        details[open] summary {
            margin-bottom: 0.75rem;
        }

        . .flex-between { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 0.75rem; }
        .mt-2 { margin-top: 0.5rem; }
        .mt-3 { margin-top: 0.75rem; }
        .mt-4 { margin-top: 1rem; }
        .mt-5 { margin-top: 1.25rem; }
        .mt-6 { margin-top: 1.5rem; }
        .mt-8 { margin-top: 2rem; }
        .mt-10 { margin-top: 2.5rem; }
        .mb-4 { margin-bottom: 1rem; }
        .p-6 { padding: 1.5rem; }
        .p-5 { padding: 1.25rem; }
        .gap-2 { gap: 0.5rem; }
        .gap-3 { gap: 0.75rem; }
        .flex-wrap { flex-wrap: wrap; }
        .text-muted { color: var(--muted); }
        .text-primary { color: var(--textcolor); }
        .text-2xl { font-size: 1.5rem; font-weight: 700; }
        .text-xl { font-size: 1.25rem; font-weight: 700; }
        .text-sm { font-size: 0.875rem; }
        .text-xs { font-size: 0.8rem; }
        .font-bold { font-weight: 700; }
        .font-semibold { font-weight: 600; }
        .tracking-wide { letter-spacing: 0.1em; }
        .rounded-2xl { border-radius: 1rem; }
        .rounded-3xl { border-radius: 1.5rem; }
        .border { border: 1px solid var(--border); }
        .bg-surface { background: var(--surface); }
        .bg-background { background: var(--background); }
.viewcontent  { max-width:1150px; margin-left:-20px}		
.viewcontent img { max-width:1100px}

      @media (max-width: 768px) {
.viewcontent  { max-width:100%; margin-left:-20px}		
.viewcontent img { max-width:100%}
        }