:root { 
        --bg: #07090e; 
        --bg-alt: #0d121c;
        --primary: #00d2ff; 
        --primary-glow: rgba(0, 210, 255, 0.35);
        --secondary: #ff9d00;
        --glass: rgba(13, 20, 32, 0.75); 
        --glass-border: rgba(0, 210, 255, 0.18);
        --text: #e2e8f0; 
        --text-muted: #94a3b8;
        --danger: #f85149;
        --success: #3fb950;
        --font-mono: 'JetBrains Mono', monospace;
    }
    
    * { box-sizing: border-box; }
    body { 
        margin: 0; 
        font-family: 'Outfit', sans-serif; 
        background: var(--bg); 
        color: var(--text); 
        line-height: 1.65;
        overflow-x: hidden; 
    }
    
    /* Background futuristic grid */
    body::before {
        content: ''; 
        position: fixed; 
        top: 0; left: 0; 
        width: 100vw; height: 100vh;
        background-image: 
            radial-gradient(circle at 50% 20%, rgba(0, 210, 255, 0.08), transparent 70%),
            linear-gradient(rgba(0, 210, 255, 0.03) 1px, transparent 1px),
            linear-gradient(90deg, rgba(0, 210, 255, 0.03) 1px, transparent 1px);
        background-size: 100% 100%, 60px 60px, 60px 60px; 
        z-index: -1;
    }

    .glass-header { 
        display: flex; justify-content: space-between; align-items: center; 
        padding: 16px 40px; background: rgba(7, 9, 14, 0.85); backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--glass-border); position: sticky; top: 0; z-index: 100;
    }
    .logo-link { text-decoration: none; }
    .logo { 
        font-weight: 800; font-size: 1.55rem; color: #fff; letter-spacing: 2px; 
    }
    .logo span { color: var(--primary); text-shadow: 0 0 12px var(--primary-glow); }
    nav { display: flex; gap: 20px; }
    nav a { 
        color: var(--text-muted); text-decoration: none; font-weight: 500; font-size: 1rem;
        transition: 0.25s; padding: 6px 12px; border-radius: 6px;
    }
    nav a:hover, nav a.active { 
        color: #fff; background: rgba(0, 210, 255, 0.1); 
        border-bottom: 2px solid var(--primary);
        text-shadow: 0 0 10px var(--primary-glow); 
    }
    
    .game-nav-wrapper {
        display: flex;
        align-items: center;
        gap: 28px;
    }

    .lang-switch, .lang-switcher { display: flex; align-items: center; gap: 8px; font-weight: 600; font-size: 0.9rem; }
    .lang-switch a, .lang-switcher a { color: var(--text-muted); text-decoration: none; transition: 0.2s; padding: 2px 6px; border-radius: 4px; }
    .lang-switch a:hover, .lang-switcher a:hover { color: #fff; }
    .lang-switch a.active-lang, .lang-switch a.active, .lang-switcher a.active-lang, .lang-switcher a.active { color: var(--primary); background: rgba(0, 210, 255, 0.15); border: 1px solid var(--glass-border); }
    .lang-switch .sep, .lang-switcher .sep { color: #475569; }

    /* Mobile Menu Toggle (hidden on desktop) */
    .menu-toggle {
        display: none;
        background: transparent;
        border: none;
        cursor: pointer;
        padding: 8px;
    }

    /* Hero */
    .hero { 
        height: 75vh; min-height: 500px; background-size: cover; background-position: center; 
        display: flex; align-items: center; justify-content: center;
        box-shadow: inset 0 0 120px #000;
        padding: 20px;
    }
    .hero-content { text-align: center; max-width: 680px; padding: 40px; }
    .badge-hero { 
        display: inline-block; color: var(--primary); border: 1px solid var(--primary); 
        padding: 4px 14px; border-radius: 20px; font-size: 0.85rem; font-weight: 600; 
        letter-spacing: 1.5px; text-transform: uppercase; margin-bottom: 20px;
        background: rgba(0, 210, 255, 0.08);
    }
    .hero-content h1 { font-size: 3.5rem; margin: 10px 0; color: #fff; letter-spacing: 2px; }
    .hero-desc { font-size: 1.15rem; color: #cbd5e1; margin-bottom: 30px; }
    .hero-buttons { display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; }
    
    .btn-primary {
        display: inline-block; padding: 14px 28px; background: var(--primary); 
        color: #050811; border: 1px solid var(--primary); border-radius: 6px;
        text-decoration: none; font-weight: 700; text-transform: uppercase; letter-spacing: 1px;
        transition: 0.3s; box-shadow: 0 0 20px rgba(0, 210, 255, 0.3);
    }
    .btn-primary:hover { background: #38bdf8; transform: translateY(-2px); box-shadow: 0 0 30px var(--primary); }
    
    .btn-secondary {
        display: inline-block; padding: 14px 28px; background: transparent; 
        color: #fff; border: 1px solid rgba(255,255,255,0.3); border-radius: 6px;
        text-decoration: none; font-weight: 600; text-transform: uppercase; letter-spacing: 1px;
        transition: 0.3s;
    }
    .btn-secondary:hover { background: rgba(255,255,255,0.1); border-color: #fff; transform: translateY(-2px); }

    /* Layout & Panels */
    .container { max-width: 1050px; margin: 50px auto; padding: 0 24px; }
    
    .glass-panel {
        background: var(--glass); 
        border: 1px solid var(--glass-border);
        border-radius: 14px; 
        backdrop-filter: blur(10px);
        box-shadow: 0 15px 35px rgba(0, 0, 0, 0.45);
        padding: 30px;
    }

    .manual-header { text-align: center; margin-bottom: 35px; }
    .section-badge { 
        display: inline-block; color: var(--secondary); font-size: 0.85rem; font-weight: 700; 
        letter-spacing: 2px; text-transform: uppercase; margin-bottom: 10px;
    }
    .page-title { color: #fff; font-size: 2.8rem; margin: 0 0 10px; letter-spacing: -0.5px; }
    .page-subtitle { color: var(--primary); font-size: 1.25rem; font-weight: 400; margin: 0; }
    
    .callout-banner {
        display: flex; align-items: center; gap: 20px;
        background: rgba(255, 157, 0, 0.08); border-color: rgba(255, 157, 0, 0.35);
        margin-bottom: 40px; padding: 20px 25px;
    }
    .callout-icon { font-size: 2rem; }
    .callout-banner p { margin: 0; font-size: 1.05rem; font-weight: 500; color: #ffedd5; }

    .manual-section { margin-bottom: 40px; position: relative; }
    .section-tag {
        display: inline-block; background: rgba(0, 210, 255, 0.12); color: var(--primary);
        font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 1.5px;
        padding: 4px 10px; border-radius: 4px; margin-bottom: 12px; border: 1px solid rgba(0, 210, 255, 0.25);
    }
    .manual-section h2 { 
        color: #fff; font-size: 1.85rem; margin-top: 0; margin-bottom: 18px; 
        border-bottom: 1px solid var(--glass-border); padding-bottom: 12px;
    }
    .section-lead { font-size: 1.1rem; color: #cbd5e1; margin-bottom: 25px; }
    .section-body p { margin-bottom: 16px; font-size: 1.05rem; color: #e2e8f0; }
    .section-body strong { color: var(--primary); font-weight: 600; }
    .section-body code { 
        background: rgba(0, 210, 255, 0.1); color: var(--primary); 
        padding: 2px 6px; border-radius: 4px; font-family: var(--font-mono); font-size: 0.9em; 
    }

    /* Section 1 Highlights */
    .highlights-grid { 
        display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); 
        gap: 20px; margin-top: 25px; 
    }
    .highlight-card {
        background: rgba(0, 0, 0, 0.3); border: 1px solid rgba(255, 255, 255, 0.08);
        border-radius: 8px; padding: 18px; display: flex; flex-direction: column; gap: 6px;
    }
    .hl-label { font-size: 0.85rem; text-transform: uppercase; color: var(--secondary); font-weight: 700; }
    .hl-val { font-size: 1rem; color: #fff; font-weight: 500; }

    /* Section 3 Formulas */
    .formulas-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(420px, 1fr)); gap: 24px; }
    .formula-card { 
        background: rgba(8, 14, 24, 0.85); border: 1px solid rgba(0, 210, 255, 0.2); 
        padding: 24px; display: flex; flex-direction: column; 
    }
    .formula-header h3 { margin: 0 0 12px; color: #fff; font-size: 1.2rem; }
    .formula-box {
        background: #020408; border: 1px solid rgba(0, 210, 255, 0.3);
        border-radius: 8px; padding: 12px 18px; margin-bottom: 14px;
        box-shadow: inset 0 0 10px rgba(0, 210, 255, 0.05);
    }
    .formula-box code { 
        font-family: var(--font-mono); font-size: 1.15rem; color: var(--primary); 
        display: block; text-shadow: 0 0 8px var(--primary-glow);
    }
    .formula-desc { font-size: 0.95rem; color: #94a3b8; margin: 0; line-height: 1.55; }
    .formula-desc strong { color: #f1f5f9; }

    /* Section 4 Config */
    .config-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(350px, 1fr)); gap: 24px; }
    .config-card { background: rgba(8, 14, 24, 0.85); }
    .config-card h3 { color: var(--primary); margin-top: 0; font-size: 1.25rem; }
    .config-card p { margin: 0; color: #cbd5e1; }

    /* Section 5 Tips */
    .tips-grid { display: flex; flex-direction: column; gap: 18px; }
    .tip-card { 
        display: flex; gap: 24px; align-items: flex-start; 
        background: rgba(8, 14, 24, 0.7); border: 1px solid rgba(255, 255, 255, 0.07);
        padding: 24px; transition: 0.3s;
    }
    .tip-card:hover { 
        border-color: rgba(0, 210, 255, 0.4); 
        transform: translateX(4px); 
        background: rgba(13, 22, 38, 0.85);
    }
    .tip-num { 
        font-size: 2.2rem; font-weight: 800; color: var(--primary); 
        font-family: var(--font-mono); line-height: 1; min-width: 50px;
        opacity: 0.85; text-shadow: 0 0 10px var(--primary-glow);
    }
    .tip-content h3 { margin: 0 0 8px; color: #fff; font-size: 1.25rem; }
    .tip-content p { margin: 0; color: #cbd5e1; font-size: 1rem; line-height: 1.6; }
    .tip-content strong { color: var(--primary); }
    
    .quote-box {
        text-align: center; margin-top: 35px; padding: 25px;
        background: linear-gradient(90deg, transparent, rgba(0, 210, 255, 0.1), transparent);
        border-top: 1px solid var(--glass-border); border-bottom: 1px solid var(--glass-border);
    }
    .quote-box p { 
        font-size: 1.3rem; font-weight: 600; color: #fff; margin: 0; 
        font-style: italic; letter-spacing: 0.5px;
    }

    /* Section 6 HUD & Vectors */
    .hud-overview-box { text-align: center; margin-bottom: 30px; padding: 20px; }
    .full-hud-img { width: 100%; border-radius: 8px; border: 1px solid var(--glass-border); }
    .img-caption { display: block; margin-top: 10px; font-size: 0.9rem; color: var(--text-muted); font-style: italic; }

    .hud-panels-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(440px, 1fr)); gap: 24px; margin-bottom: 35px; }
    .hud-panel-card { display: flex; gap: 20px; align-items: flex-start; padding: 20px; }
    .hud-panel-img { 
        flex: 0 0 160px; background: #000; border-radius: 6px; 
        border: 1px solid var(--primary); overflow: hidden; display: flex; align-items: center; justify-content: center;
    }
    .hud-panel-img img { width: 100%; height: auto; display: block; }
    .hud-panel-info { flex: 1 1 auto; }
    .hud-panel-info h3 { margin: 0 0 10px; color: #7dd3fc; font-size: 1.15rem; }
    .hud-panel-info ul { margin: 0; padding-left: 20px; font-size: 0.95rem; color: #cbd5e1; }
    .hud-panel-info li { margin-bottom: 8px; }
    .hud-panel-info strong { color: #fff; }

    .vectors-box { padding: 30px; margin-top: 20px; }
    .vectors-header { display: flex; gap: 30px; align-items: flex-start; margin-bottom: 25px; }
    .vectors-img { flex: 0 0 240px; border-radius: 8px; border: 1px solid var(--glass-border); max-width: 100%; }
    .vectors-text { flex: 1 1 auto; }
    .vectors-text h3 { margin-top: 0; color: #fff; font-size: 1.35rem; }
    .vectors-list { list-style: none; padding: 0; margin: 15px 0 0; }
    .vector-item { 
        padding: 10px 14px; margin-bottom: 10px; border-radius: 6px; 
        background: rgba(0, 0, 0, 0.4); border-left: 4px solid #fff; font-size: 0.95rem; 
    }
    .vec-yellow { border-left-color: #facc15; }
    .vec-yellow strong { color: #facc15; }
    .vec-red { border-left-color: #ef4444; }
    .vec-red strong { color: #ef4444; }
    .vec-green { border-left-color: #22c55e; }
    .vec-green strong { color: #22c55e; }
    .vec-blue { border-left-color: #3b82f6; }
    .vec-blue strong { color: #3b82f6; }

    .gold-tip-box {
        background: rgba(250, 204, 21, 0.08); border: 1px solid rgba(250, 204, 21, 0.3);
        border-radius: 8px; padding: 18px 24px;
    }
    .gold-tip-box p { margin: 0; color: #fef08a; font-size: 1rem; line-height: 1.6; }

    /* Vehicles Grid */
    .vehicles-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(310px, 1fr)); gap: 30px; }
    .vehicle-card { 
        display: flex; flex-direction: column; align-items: center; text-align: center; 
        transition: 0.3s; padding: 25px; 
    }
    .vehicle-card:hover { 
        transform: translateY(-6px); 
        border-color: rgba(0,210,255,0.45); 
        box-shadow: 0 15px 35px rgba(0,210,255,0.15); 
    }
    .vehicle-img { 
        width: 100%; height: 180px; display: flex; align-items: center; justify-content: center; 
        background: rgba(0,0,0,0.25); border-radius: 8px; margin-bottom: 15px;
    }
    .vehicle-img img { max-width: 90%; max-height: 160px; object-fit: contain; filter: drop-shadow(0 0 15px rgba(0,210,255,0.25)); }
    .vehicle-info h2 { color: #fff; margin: 10px 0 10px; font-size: 1.4rem; }
    .desc { font-size: 0.95rem; color: #94a3b8; margin-bottom: 20px; line-height: 1.5; }
    .stats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; width: 100%; }
    .stat { 
        background: rgba(0,210,255,0.08); padding: 8px 12px; border-radius: 6px; 
        font-size: 0.85rem; color: #cbd5e1; border: 1px solid rgba(0,210,255,0.15); 
        text-align: left;
    }
    .stat strong { color: var(--primary); }

    /* Footer */
    footer { 
        text-align: center; padding: 40px 20px; color: #64748b; 
        border-top: 1px solid var(--glass-border); margin-top: 70px; background: rgba(5,7,12,0.8);
    }
    .footer-brand { font-weight: 700; color: #94a3b8; letter-spacing: 1px; margin-bottom: 8px; }
    .footer-athanode { margin: 16px 0; display: flex; justify-content: center; align-items: center; gap: 10px; flex-wrap: wrap; }
    .athanode-back-link {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        color: var(--primary);
        text-decoration: none;
        font-weight: 600;
        font-size: 0.9rem;
        padding: 7px 18px;
        border-radius: 20px;
        background: rgba(0, 210, 255, 0.07);
        border: 1px solid rgba(0, 210, 255, 0.25);
        transition: all 0.25s ease;
    }
    .athanode-back-link:hover {
        background: rgba(0, 210, 255, 0.18);
        border-color: var(--primary);
        color: #fff;
        transform: translateY(-2px);
        box-shadow: 0 0 16px var(--primary-glow);
    }
    .footer-social-links { display: inline-flex; align-items: center; gap: 10px; flex-wrap: wrap; justify-content: center; }
    .footer-social-link { display: inline-flex; align-items: center; gap: 7px; color: #cbd5e1; text-decoration: none; font-weight: 500; font-size: 0.88rem; padding: 7px 15px; border-radius: 20px; background: rgba(255, 255, 255, 0.04); border: 1px solid rgba(255, 255, 255, 0.14); transition: all 0.25s ease; }
    .footer-social-link svg { width: 15px; height: 15px; fill: currentColor; flex-shrink: 0; transition: transform 0.25s ease; }
    .footer-social-link:hover { background: rgba(0, 210, 255, 0.15); border-color: var(--primary); color: #fff; transform: translateY(-2px); box-shadow: 0 0 14px var(--primary-glow); }
    .footer-social-link:hover svg { transform: scale(1.1); color: var(--primary); }
    footer p { margin: 0; font-size: 0.85rem; }

    /* Animations & Media Queries */
    .fade-in { animation: fadeIn 0.6s ease-out; }
    @keyframes fadeIn { from { opacity: 0; transform: translateY(15px); } to { opacity: 1; transform: translateY(0); } }

    @media (max-width: 850px) {
        .glass-header { 
            padding: 10px 18px; 
            flex-direction: row; 
            justify-content: space-between;
            align-items: center;
            height: 58px;
        }
        .logo { font-size: 1.25rem; letter-spacing: 1px; }

        .menu-toggle {
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            background: rgba(13, 20, 32, 0.85);
            border: 1px solid var(--glass-border);
            border-radius: 8px;
            cursor: pointer;
            transition: all 0.25s ease;
        }

        .menu-toggle:hover,
        .menu-toggle.is-active {
            border-color: var(--primary);
            background: rgba(0, 210, 255, 0.15);
        }

        .hamburger-bar {
            display: block;
            width: 20px;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
            transition: transform 0.25s ease, opacity 0.25s ease;
        }

        .menu-toggle.is-active .hamburger-bar:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .menu-toggle.is-active .hamburger-bar:nth-child(2) {
            opacity: 0;
        }

        .menu-toggle.is-active .hamburger-bar:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .game-nav-wrapper {
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            width: 100%;
            background: rgba(7, 9, 14, 0.98);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 2px solid var(--primary);
            box-shadow: 0 16px 36px rgba(0, 0, 0, 0.8);
            flex-direction: column;
            gap: 0;
            max-height: 0;
            opacity: 0;
            overflow: hidden;
            pointer-events: none;
            transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.25s ease;
        }

        .game-nav-wrapper.is-open {
            max-height: 400px;
            opacity: 1;
            pointer-events: auto;
        }

        nav {
            flex-direction: column;
            gap: 0;
            width: 100%;
        }

        nav a {
            display: block;
            padding: 13px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 1rem;
            width: 100%;
            text-align: left;
            border-radius: 0;
        }

        nav a:hover,
        nav a.active {
            background: rgba(0, 210, 255, 0.12);
            color: var(--primary);
            padding-left: 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .lang-switch, .lang-switcher {
            width: 100%;
            justify-content: center;
            gap: 16px;
            padding: 14px 20px 18px 20px;
            background: rgba(0, 0, 0, 0.35);
        }

        .lang-switch a, .lang-switcher a {
            padding: 6px 14px;
        }

        .hero-content h1 { font-size: 2.5rem; }
        .formulas-grid, .hud-panels-grid { grid-template-columns: 1fr; }
        .vectors-header { flex-direction: column; }
        .vectors-img { width: 100%; }
        .hud-panel-card { flex-direction: column; }
        .hud-panel-img { width: 100%; flex: auto; }
        .tip-card { flex-direction: column; gap: 10px; }
        .page-title { font-size: 2.2rem; }
    }