:root {
            --bg-color: #0A141B;
            --accent-color: #5FE8D0;
            --text-main: #FFFFFF;
            --text-muted: rgba(255, 255, 255, 0.6);
            --glass-border: rgba(255, 255, 255, 0.15);
            --glass-bg: rgba(255, 255, 255, 0.03);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            background-color: var(--bg-color);
            color: var(--text-main);
            font-family: 'Noto Sans SC', sans-serif;
            overflow-x: hidden;
            position: relative;
        }

        /* 柔和光斑 */
        .glow-spot {
            position: fixed;
            border-radius: 50%;
            filter: blur(150px);
            z-index: -2;
            opacity: 0.3;
            pointer-events: none;
        }
        .glow-spot-1 {
            top: -10%;
            left: -10%;
            width: 50vw;
            height: 50vw;
            background: rgba(95, 232, 208, 0.2);
        }
        .glow-spot-2 {
            bottom: -20%;
            right: -10%;
            width: 60vw;
            height: 60vw;
            background: rgba(0, 120, 255, 0.15);
        }

        /* 气泡容器与气泡 */
        #bubble-container {
            position: fixed;
            top: 0;
            left: 0;
            width: 100vw;
            height: 100vh;
            z-index: -1;
            pointer-events: auto;
            overflow: hidden;
        }

        .bubble-wrapper {
            position: absolute;
            bottom: 0;
            animation: floatUp linear infinite;
        }

        .bubble {
            border-radius: 50%;
            border: 1px solid var(--glass-border);
            background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.01));
            box-shadow: inset 0 0 15px rgba(95, 232, 208, 0.05), 0 4px 30px rgba(0,0,0,0.1);
            backdrop-filter: blur(2px);
            -webkit-backdrop-filter: blur(2px);
            cursor: crosshair;
            transition: opacity 0.2s ease, transform 0.2s ease-out; /* parallax & pop transition */
            position: relative;
        }

        .bubble::after {
            content: '';
            position: absolute;
            top: 15%;
            left: 15%;
            width: 25%;
            height: 25%;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255,255,255,0.4) 0%, rgba(255,255,255,0) 70%);
            transform: rotate(-45deg);
        }
        
        .bubble.pop {
            opacity: 0 !important;
            transform: scale(1.5) !important;
        }

        @keyframes floatUp {
            0% { transform: translateY(100px); }
            100% { transform: translateY(-120vh); }
        }

        /* 导航栏 */
        header {
            position: fixed;
            top: 0;
            width: 100%;
            padding: 20px 0;
            z-index: 100;
            background: linear-gradient(to bottom, rgba(10,20,27,0.9), transparent);
            backdrop-filter: blur(5px);
        }

        header .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .brand {
            font-size: 1.5rem;
            font-weight: 900;
            letter-spacing: 2px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        
        .status-light {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: var(--accent-color);
            box-shadow: 0 0 10px var(--accent-color);
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0% { opacity: 0.5; box-shadow: 0 0 5px var(--accent-color); }
            50% { opacity: 1; box-shadow: 0 0 15px var(--accent-color); }
            100% { opacity: 0.5; box-shadow: 0 0 5px var(--accent-color); }
        }

        .nav-links {
            display: flex;
            gap: 40px;
        }

        .nav-links a {
            color: var(--text-main);
            text-decoration: none;
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.85rem;
            opacity: 0.7;
            transition: 0.3s;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .nav-links a:hover {
            opacity: 1;
            color: var(--accent-color);
        }

        /* 内容区 */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        section {
            padding: 80px 0;
            position: relative;
            z-index: 10;
        }

        section.hero {
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            justify-content: center;
            padding-top: 150px;
        }

        .hero h1 {
            font-size: 5rem;
            font-weight: 900;
            line-height: 1.1;
            margin-bottom: 30px;
            background: linear-gradient(180deg, #FFFFFF 0%, rgba(255,255,255,0.7) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero p {
            font-size: 1.25rem;
            color: var(--text-muted);
            max-width: 600px;
            line-height: 1.8;
            margin-bottom: 50px;
            font-family: 'Noto Sans SC', sans-serif;
            font-weight: 400;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 16px 40px;
            border-radius: 50px;
            font-family: 'Sora', sans-serif;
            font-weight: 600;
            font-size: 1.1rem;
            text-decoration: none;
            transition: 0.3s;
            cursor: pointer;
            border: 1px solid transparent;
        }

        .btn-primary {
            background-color: var(--accent-color);
            color: var(--bg-color);
            box-shadow: 0 0 20px rgba(95, 232, 208, 0.4);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 30px rgba(95, 232, 208, 0.6);
            background-color: #7affea;
        }
        
        .btn-secondary {
            background-color: transparent;
            color: var(--accent-color);
            border: 1px solid var(--accent-color);
            margin-left: 20px;
        }
        
        .btn-secondary:hover {
            background-color: rgba(95, 232, 208, 0.1);
        }

        /* 关键数字区 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            margin-top: 100px;
        }

        .stat-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: 20px;
            padding: 40px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: transform 0.3s, border-color 0.3s;
        }
        
        .stat-card:hover {
            transform: translateY(-5px);
            border-color: rgba(95, 232, 208, 0.3);
        }

        .stat-num {
            font-family: 'Sora', sans-serif;
            font-size: 3.5rem;
            font-weight: 700;
            color: var(--accent-color);
            margin-bottom: 10px;
            display: flex;
            align-items: baseline;
        }
        
        .stat-num span {
            font-size: 1.5rem;
            margin-left: 5px;
        }

        .stat-label {
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.9rem;
            color: var(--text-muted);
            text-transform: uppercase;
        }

        /* 滚动渐入动画 */
        .reveal {
            opacity: 0;
            transform: translateY(30px);
            transition: all 0.8s cubic-bezier(0.5, 0, 0, 1);
        }

        .reveal.active {
            opacity: 1;
            transform: translateY(0);
        }

        @media (max-width: 768px) {
            .hero h1 { font-size: 3.5rem; }
            .stats-grid { grid-template-columns: 1fr; }
            .nav-links { display: none; }
            header { padding: 20px; }
            .btn-secondary { margin-left: 0; margin-top: 20px; display: block; width: fit-content; }
        }
        /* 之前的排版网格样式 (暗黑适配) */
        h2 {
            text-align: center;
            font-size: 2.2rem;
            margin-bottom: 40px;
            font-weight: 900;
        }

        .card-grid, .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .card, .price-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            padding: 30px;
            border-radius: 12px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: transform 0.3s, border-color 0.3s;
            text-align: center;
        }

        .card:hover, .price-card:hover {
            transform: translateY(-5px);
            border-color: rgba(95, 232, 208, 0.3);
        }

        .support-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .support-item {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            padding: 20px;
            border-radius: 8px;
            font-size: 1.1rem;
            text-align: center;
            color: var(--text-main);
        }

        .price-card {
            position: relative;
            display: flex;
            flex-direction: column;
            padding: 40px 30px;
        }

        .price-card.popular {
            border-color: var(--accent-color);
            box-shadow: 0 0 20px rgba(95, 232, 208, 0.15);
            transform: scale(1.05);
        }
        
        .price-card.popular:hover {
            transform: scale(1.05) translateY(-5px);
        }

        .badge {
            position: absolute;
            top: -15px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--accent-color);
            color: var(--bg-color);
            padding: 5px 15px;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: bold;
        }

        .price {
            font-size: 2.5rem;
            font-weight: bold;
            color: var(--accent-color);
            margin: 20px 0;
            font-family: 'Sora', sans-serif;
        }

        .price span {
            font-size: 1rem;
            color: var(--text-muted);
        }

        .price-card ul {
            list-style: none;
            margin-bottom: 30px;
            flex-grow: 1;
        }

        .price-card ul li {
            padding: 10px 0;
            border-bottom: 1px solid var(--glass-border);
            color: var(--text-muted);
        }

        .review-card p {
            font-style: italic;
            margin-bottom: 20px;
            color: var(--text-muted);
        }

        .review-card .author {
            font-weight: bold;
            color: var(--accent-color);
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        details {
            background: var(--glass-bg);
            padding: 15px 20px;
            border-radius: 8px;
            margin-bottom: 15px;
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(10px);
        }

        summary {
            font-size: 1.1rem;
            font-weight: bold;
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        summary::-webkit-details-marker {
            display: none;
        }

        summary::after {
            content: '+';
            font-size: 1.5rem;
            color: var(--accent-color);
        }

        details[open] summary::after {
            content: '-';
        }

        details p {
            margin-top: 15px;
            color: var(--text-muted);
            padding-top: 15px;
            border-top: 1px dashed var(--glass-border);
        }

        /* Footer */
        footer {
            background: rgba(0,0,0,0.3);
            color: var(--text-main);
            padding: 40px 0;
            border-top: 1px solid var(--glass-border);
            position: relative;
            z-index: 10;
        }

        .footer-content {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 20px;
        }

        .footer-brand {
            font-size: 1.5rem;
            font-weight: bold;
        }

        .footer-links {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .footer-links a {
            color: var(--text-muted);
            text-decoration: none;
            transition: color 0.3s;
        }

        .footer-links a:hover {
            color: var(--accent-color);
        }

        .copyright {
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        .cta-btn {
            width: 100%;
            margin-left: 0;
        }
        
        @media (max-width: 992px) {
            .card-grid, .pricing-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .price-card.popular {
                transform: scale(1);
            }
            .price-card.popular:hover {
                transform: translateY(-5px);
            }
        }

        @media (max-width: 768px) {
            .card-grid, .pricing-grid, .support-grid {
                grid-template-columns: 1fr;
            }
        }
    
        /* 子页面容器 (暗黑适配) */
        .subpage-container {
            padding: 60px 40px;
            max-width: 800px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            margin: 120px auto 40px;
            border-radius: 12px;
            color: var(--text-main);
            position: relative;
            z-index: 10;
        }
        .subpage-container h1, .subpage-container h2 {
            color: #fff;
            margin-bottom: 20px;
        }
        .subpage-container h1 {
            text-align: center;
        }
        .subpage-container p, .subpage-container li {
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 15px;
        }
        .subpage-container a:not(.btn-primary) {
            color: var(--accent-color);
            text-decoration: none;
        }
        .subpage-container a:not(.btn-primary):hover {
            text-decoration: underline;
        }
        .article-content p {
            color: var(--text-muted) !important;
        }

/* SEO & Accessibility Fixes */
section, .subpage-container, h1, h2, h3 { scroll-margin-top: 120px; }
.nav-links a { padding: 12px 16px; min-height: 44px; display: inline-flex; align-items: center; }
.skip-link {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}
.skip-link:focus {
    width: auto;
    height: auto;
    padding: 10px 20px;
    margin: 0;
    clip: auto;
    top: 0;
    left: 20px;
    background: var(--accent-color);
    color: #000;
    z-index: 99999;
    border-radius: 0 0 8px 8px;
    font-weight: bold;
    text-decoration: none;
}