:root {
            --bg-primary: #0F172A;
            --bg-secondary: #1E293B;
            --bg-card: #334155;
            --text-primary: #ffffff;
            --text-secondary: #94a3b8;
            --accent: #CCFF00;
            --border: #475569;
        }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.8;
            min-height: 100vh;
        }
        .container { max-width: 800px; margin: 0 auto; padding: 0 24px; }
        header { padding: 24px 0; border-bottom: 1px solid var(--border); }
        .header-content { display: flex; align-items: center; justify-content: space-between; }
        .logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
        .logo-icon { width: 32px; height: 32px; border-radius: 8px; overflow: hidden; }
        .logo-icon img { width: 100%; height: 100%; object-fit: cover; }
        .logo-text { height: 17px; }
        .header-right { display: flex; align-items: center; gap: 16px; }
        .back-link { color: var(--accent); text-decoration: none; font-size: 14px; }
        .back-link:hover { text-decoration: underline; }
        .lang-switcher { position: relative; }
        .lang-btn {
            display: flex; align-items: center; gap: 6px;
            background: transparent; border: 1px solid var(--border);
            color: var(--text-secondary); padding: 6px 12px;
            border-radius: 6px; font-size: 13px; cursor: pointer; transition: all 0.2s;
        }
        .lang-btn:hover { border-color: var(--text-secondary); color: var(--text-primary); }
        .lang-btn .globe-icon { width: 16px; height: 16px; }
        .lang-btn .chevron-icon { width: 14px; height: 14px; transition: transform 0.2s; }
        .lang-switcher.open .lang-btn .chevron-icon { transform: rotate(180deg); }
        .lang-dropdown {
            position: absolute; top: 100%; right: 0; margin-top: 8px;
            background: var(--bg-card); border: 1px solid var(--border);
            border-radius: 8px; padding: 8px 0; min-width: 140px;
            opacity: 0; visibility: hidden; transform: translateY(-10px);
            transition: all 0.2s; z-index: 1000;
        }
        .lang-switcher.open .lang-dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
        .lang-option {
            display: flex; align-items: center; gap: 10px; padding: 10px 16px;
            color: var(--text-secondary); font-size: 14px; cursor: pointer; transition: all 0.15s;
        }
        .lang-option:hover { background: rgba(255, 255, 255, 0.05); color: var(--text-primary); }
        .lang-option.active { color: var(--accent); }
        .lang-option span.flag { font-size: 16px; }
        main { padding: 60px 0; }
        h1 { font-size: 36px; font-weight: 700; margin-bottom: 16px; }
        .update-date { color: var(--text-secondary); font-size: 14px; margin-bottom: 48px; }
        h2 { font-size: 22px; font-weight: 600; margin-top: 40px; margin-bottom: 16px; color: var(--accent); }
        h3 { font-size: 18px; font-weight: 600; margin-top: 24px; margin-bottom: 12px; }
        p { color: var(--text-secondary); margin-bottom: 16px; font-size: 15px; }
        ul { color: var(--text-secondary); margin-bottom: 16px; padding-left: 24px; font-size: 15px; }
        li { margin-bottom: 8px; }
        .highlight-box { background: var(--bg-secondary); border-radius: 12px; padding: 20px 24px; margin: 24px 0; }
        .highlight-box p { margin-bottom: 0; }
        a { color: var(--accent); }
        footer { padding: 32px 0; border-top: 1px solid var(--border); text-align: center; color: var(--text-secondary); font-size: 14px; }
        @media (max-width: 640px) { h1 { font-size: 28px; } h2 { font-size: 20px; } .header-right { gap: 12px; } }