:root {
            --bg: #000000;
            --card: rgba(255,255,255,.03);
            --card-hover: rgba(255,255,255,.05);
            --border: rgba(255,255,255,.08);
            --text: #ffffff;
            --muted: #86868b;
            --accent: #007aff;
            --accent-green: #34c759;
            --accent-purple: #af52de;
            --accent-orange: #ff9500;
            --glow: rgba(0,122,255,.4);
            --code-bg: rgba(0,0,0,.6);
            --ease: cubic-bezier(.4,0,.2,1);
        }

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

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
        }

        body::before {
            content: '';
            position: fixed;
            top: 50%;
            left: 50%;
            width: 900px;
            height: 900px;
            background: radial-gradient(circle, var(--glow), transparent 70%);
            transform: translate(-50%, -50%);
            opacity: .12;
            animation: pulse 8s ease-in-out infinite;
            pointer-events: none;
        }

        @keyframes pulse {
            0%, 100% { opacity: .12; transform: translate(-50%, -50%) scale(1); }
            50% { opacity: .2; transform: translate(-50%, -50%) scale(1.08); }
        }

        @keyframes fadeUp {
            0% { opacity: 0; transform: translateY(20px); }
            100% { opacity: 1; transform: translateY(0); }
        }

        @keyframes slideIn {
            0% { opacity: 0; transform: translateX(-20px); }
            100% { opacity: 1; transform: translateX(0); }
        }

        nav {
            position: sticky;
            top: 0;
            background: rgba(0,0,0,.7);
            backdrop-filter: blur(20px) saturate(180%);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
            animation: slideIn 0.6s var(--ease);
        }

        .nav-content {
            max-width: 1400px;
            margin: 0 auto;
            padding: 1rem 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: .75rem;
            text-decoration: none;
            color: var(--text);
            font-weight: 600;
            font-size: 1.1rem;
            transition: transform .3s var(--ease);
        }

        .logo:hover {
            transform: translateY(-2px);
        }

        .logo img {
            width: 40px;
            height: 40px;
            border-radius: 10px;
        }

        .nav-links {
            display: flex;
            gap: .5rem;
            list-style: none;
        }

        .nav-links a {
            color: var(--muted);
            text-decoration: none;
            padding: .65rem 1rem;
            border-radius: 10px;
            font-size: .95rem;
            font-weight: 500;
            transition: all .3s var(--ease);
        }

        .nav-links a:hover {
            color: var(--text);
            background: rgba(255,255,255,.06);
        }

        .nav-links a.active {
            color: #fff;
            background: var(--accent);
        }

        .hero {
            text-align: center;
            padding: 5rem 2rem 3rem;
            max-width: 900px;
            margin: 0 auto;
            animation: fadeUp 0.8s var(--ease) 0.2s both;
        }

        .hero h1 {
            font-size: 4rem;
            font-weight: 700;
            margin-bottom: 1rem;
            letter-spacing: -.03em;
        }

        .hero p {
            font-size: 1.25rem;
            color: var(--muted);
            margin-bottom: 2rem;
            line-height: 1.6;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem 4rem;
        }

        .section {
            background: var(--card);
            backdrop-filter: blur(40px);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 2.5rem;
            margin-bottom: 2rem;
            transition: all .3s var(--ease);
            animation: fadeUp 0.8s var(--ease);
        }

        .section:hover {
            border-color: rgba(255,255,255,.15);
        }

        .section h2 {
            font-size: 1.75rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            gap: .75rem;
        }

        .section h2 i {
            color: var(--accent);
            font-size: 1.5rem;
        }

        .section > p {
            color: var(--muted);
            line-height: 1.6;
            margin-bottom: 1rem;
        }

        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.5rem;
            margin-top: 2rem;
        }

        .feature-item {
            background: rgba(255,255,255,.02);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 1.75rem;
            transition: all .3s var(--ease);
        }

        .feature-item:hover {
            transform: translateY(-4px);
            border-color: var(--accent);
            background: rgba(0,122,255,.05);
        }

        .feature-item h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: .75rem;
            display: flex;
            align-items: center;
            gap: .5rem;
        }

        .feature-item h3 i {
            color: var(--accent);
        }

        .feature-item p {
            color: var(--muted);
            font-size: .95rem;
            line-height: 1.6;
        }

        .feature-item code {
            background: rgba(255,255,255,.05);
            padding: .2rem .5rem;
            border-radius: 4px;
            font-size: .85rem;
            font-family: 'Monaco', monospace;
            color: var(--accent);
        }

        .evidence-box {
            background: rgba(0,122,255,.05);
            border: 2px solid rgba(0,122,255,.3);
            border-radius: 20px;
            padding: 2.5rem;
            margin-top: 2rem;
            animation: fadeUp 0.8s var(--ease) 0.4s both;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            padding: .5rem 1rem;
            background: var(--accent);
            color: white;
            border-radius: 8px;
            font-size: .8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: .5px;
            margin-bottom: 1.5rem;
        }

        .evidence-box h2 {
            font-size: 1.75rem;
            margin-bottom: 1rem;
        }

        .code-explanation {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 1.5rem;
            margin: 2rem 0;
        }

        .code-explanation h3 {
            font-size: 1.2rem;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: .5rem;
            color: var(--accent);
        }

        .code-explanation h3 i {
            font-size: 1rem;
        }

        .code-container {
            background: var(--code-bg);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 1.5rem;
            font-family: 'Monaco', 'Courier New', monospace;
            font-size: .85rem;
            overflow-x: auto;
            margin: 1.5rem 0;
            line-height: 1.8;
        }

        .code-line {
            display: block;
            color: #d1d1d1;
        }

        .code-comment {
            color: #6272a4;
            font-style: italic;
        }

        .code-keyword {
            color: #ff79c6;
            font-weight: 600;
        }

        .code-function {
            color: #50fa7b;
        }

        .code-string {
            color: #f1fa8c;
        }

        .code-number {
            color: #bd93f9;
        }

        .explanation-steps {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            margin-top: 1.5rem;
        }

        .step {
            display: flex;
            gap: 1rem;
            padding: 1rem;
            background: rgba(255,255,255,.02);
            border-radius: 12px;
            border-left: 3px solid var(--accent);
        }

        .step-number {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: var(--accent);
            color: white;
            border-radius: 50%;
            font-weight: 700;
            font-size: .9rem;
            flex-shrink: 0;
        }

        .step-content h4 {
            font-size: 1rem;
            margin-bottom: .5rem;
            font-weight: 600;
        }

        .step-content p {
            color: var(--muted);
            font-size: .9rem;
            line-height: 1.5;
        }

        .language-tabs {
            display: flex;
            gap: .5rem;
            margin-bottom: 1rem;
            flex-wrap: wrap;
        }

        .language-tab {
            padding: .5rem 1rem;
            background: rgba(255,255,255,.05);
            border: 1px solid var(--border);
            border-radius: 8px;
            color: var(--muted);
            font-size: .85rem;
            font-weight: 500;
            cursor: pointer;
            transition: all .3s var(--ease);
        }

        .language-tab.active {
            background: var(--accent);
            border-color: var(--accent);
            color: white;
        }

        .language-tab:hover:not(.active) {
            background: rgba(255,255,255,.08);
            color: var(--text);
        }

        .code-example {
            display: none;
        }

        .code-example.active {
            display: block;
        }

        footer {
            margin-top: 4rem;
            padding: 3rem 2rem;
            border-top: 1px solid var(--border);
            background: rgba(255,255,255,.02);
        }

        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            gap: 3rem;
        }

        .footer-section {
            flex: 1;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: .75rem;
            margin-bottom: .75rem;
        }

        .footer-logo img {
            width: 50px;
            height: 50px;
            border-radius: 12px;
        }

        .footer-logo span {
            font-size: 1.3rem;
            font-weight: 600;
        }

        .footer-by {
            color: var(--muted);
            font-size: .9rem;
            margin-bottom: 1rem;
        }

        .footer-heading {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: rgba(255,255,255,.6);
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: .5rem;
        }

        .footer-links a {
            color: var(--muted);
            text-decoration: none;
            font-size: .95rem;
            transition: color .3s var(--ease);
            display: flex;
            align-items: center;
            gap: .5rem;
        }

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

        .footer-links i {
            width: 16px;
            font-size: .85rem;
        }

        .footer-bottom {
            text-align: center;
            margin-top: 2rem;
            padding-top: 2rem;
            border-top: 1px solid var(--border);
            color: var(--muted);
            font-size: .9rem;
        }

        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2.5rem;
            }

            .hero p {
                font-size: 1rem;
            }

            .nav-content {
                flex-direction: column;
                gap: 1rem;
            }

            .nav-links {
                width: 100%;
                justify-content: center;
                flex-wrap: wrap;
            }

            .feature-grid {
                grid-template-columns: 1fr;
            }

            .footer-content {
                flex-direction: column;
                text-align: center;
            }

            .section {
                padding: 1.5rem;
            }

            .code-container {
                font-size: .75rem;
            }
        }