/* CSS Reset and Variables */
        :root {
            --bg-dark: #1b202f;
            --bg-darker: #151925;
            --card-bg: #202534;
            --primary-green: #00b95b;
            --primary-green-hover: #00a04f;
            --text-main: #ffffff;
            --text-muted: #8c94a8;
            --link-blue: #2e70e8;
            --btn-gray: rgba(255, 255, 255, 0.08);
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
        }

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

        body {
            font-family: var(--font-family);
            background: linear-gradient(180deg, #1b202f 0%, #151925 100%);
            color: var(--text-main);
            min-height: 100vh;
        }

        a {
            text-decoration: none;
            cursor: pointer;
        }

        /* --- Navbar --- */
        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 40px;
            background-color: transparent;
        }

        .logo {
            display: flex;
            align-items: center;
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 1px;
            color: var(--text-main);
        }

        .logo svg {
            margin-right: 12px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .btn {
            padding: 10px 20px;
            border-radius: 4px;
            font-size: 14px;
            font-weight: 600;
            transition: all 0.2s ease;
            border: none;
        }

        .btn-login {
            background-color: var(--btn-gray);
            color: var(--text-main);
        }

        .btn-login:hover {
            background-color: rgba(255, 255, 255, 0.15);
        }

        .btn-signup {
            background-color: var(--primary-green);
            color: var(--text-main);
        }

        .btn-signup:hover {
            background-color: var(--primary-green-hover);
        }

        .menu-btn {
            background: none;
            border: none;
            color: white;
            font-size: 24px;
            margin-left: 10px;
            cursor: pointer;
            display: flex;
            align-items: center;
        }

        /* --- Hero Section --- */
        .hero {
            text-align: center;
            padding: 60px 20px 40px;
            max-width: 900px;
            margin: 0 auto;
        }

        .hero h1 {
            font-size: 48px;
            line-height: 1.2;
            margin-bottom: 25px;
            font-weight: 700;
        }

        .hero p {
            color: var(--text-muted);
            font-size: 18px;
            margin-bottom: 40px;
        }

        .cta-group {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 20px;
            margin-bottom: 60px;
        }

        .btn-create {
            background-color: var(--primary-green);
            color: var(--text-main);
            padding: 16px 32px;
            border-radius: 6px;
            font-size: 16px;
            font-weight: 700;
            transition: background-color 0.2s;
        }

        .btn-create:hover {
            background-color: var(--primary-green-hover);
        }

        .disclaimer {
            color: var(--text-muted);
            font-size: 13px;
            max-width: 220px;
            text-align: left;
            line-height: 1.4;
        }

        /* --- Platform Mockup (Pure CSS Representation) --- */
        .mockup-container {
            max-width: 1000px;
            margin: 0 auto 80px;
            padding: 0 20px;
        }

        .mockup {
            background-color: #171b26;
            border: 1px solid #2a3144;
            border-radius: 8px;
            height: 450px;
            width: 100%;
            position: relative;
            overflow: hidden;
            box-shadow: 0 25px 50px rgba(0, 0, 0, 0.4);
            display: flex;
            flex-direction: column;
        }

        .mockup-header {
            height: 50px;
            border-bottom: 1px solid #2a3144;
            display: flex;
            align-items: center;
            padding: 0 20px;
        }

        .mockup-body {
            flex-grow: 1;
            position: relative;
            background-image: linear-gradient(#1c212e 1px, transparent 1px), linear-gradient(90deg, #1c212e 1px, transparent 1px);
            background-size: 40px 40px;
        }

        /* Simulated Candlesticks */
        .candle {
            position: absolute;
            width: 8px;
            bottom: 30%;
        }
        .candle::before {
            content: '';
            position: absolute;
            width: 2px;
            height: 140%;
            top: -20%;
            left: 3px;
        }
        .candle.green { background-color: var(--primary-green); }
        .candle.green::before { background-color: var(--primary-green); }
        .candle.red { background-color: #ff4a4a; }
        .candle.red::before { background-color: #ff4a4a; }

        /* --- Features Section --- */
        .features {
            text-align: center;
            padding: 0 20px 100px;
            max-width: 1000px;
            margin: 0 auto;
        }

        .features h2 {
            font-size: 36px;
            margin-bottom: 15px;
        }

        .features > p {
            color: var(--text-muted);
            font-size: 16px;
            margin-bottom: 50px;
        }

        .cards-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            justify-content: center;
        }

        .card {
            background-color: var(--card-bg);
            border-radius: 12px;
            padding: 40px 30px;
            text-align: left;
            display: flex;
            flex-direction: column;
            transition: transform 0.3s ease;
        }

        .card:hover {
            transform: translateY(-5px);
        }

        .icon-wrapper {
            width: 50px;
            height: 50px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 25px;
        }

        .icon-purple { background-color: #9d50ff; }
        .icon-orange { background-color: #ff6b4a; }

        .card h3 {
            font-size: 22px;
            margin-bottom: 15px;
        }

        .card p {
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 30px;
            flex-grow: 1;
        }

        .card-link {
            color: var(--link-blue);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            font-size: 15px;
        }

        .card-link svg {
            margin-left: 8px;
            transition: transform 0.2s ease;
        }

        .card-link:hover svg {
            transform: translateX(4px);
        }

        /* --- Responsive Design --- */
        @media (max-width: 768px) {
            .hero h1 { font-size: 36px; }
            .cta-group { flex-direction: column; text-align: center; gap: 15px; }
            .disclaimer { text-align: center; max-width: 100%; margin-top: 10px; }
            header { padding: 15px 20px; }
            .mockup { height: 300px; }
            .btn-login { display: none; }
        }