:root {
        --primary: #5b3cc4;
        --accent: #f4c430;
        --bg: #ffffff;
        --text: #1a1a1a;
        --muted: #6b6b6b;
    }

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

    body {
        font-family: 'Inter', sans-serif;
        background: var(--bg);
        color: var(--text);
        line-height: 1.6;
    }

    .container {
        width: 100%;
        max-width: 1100px;
        margin: 0 auto;
        padding: 0 40px;
    }

    header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 20px 60px;
    }

    .logo {
        font-family: 'Playfair Display', serif;
        font-size: 28px;
    }

    .cta-btn {
        padding: 10px 20px;
        border: none;
        background: var(--accent);
        cursor: pointer;
        font-weight: 600;
    }

    .hero {
        display: grid;
        grid-template-columns: auto auto;
        gap: 40px;
        padding: 48px 40px;
        align-items: center;
        justify-content: center;
    }

    .hero-text {
        max-width: 520px;
        text-align: left;
    }

    .hero-text h1 {
        font-size: 42px;
        font-family: 'Playfair Display', serif;
        margin-bottom: 20px;
    }

    .hero-text p {
        color: var(--muted);
        margin-bottom: 30px;
    }

    .email-box {
        display: flex;
        flex-direction: column;
        gap: 12px;
        max-width: auto;
    }

    .email-box button {
        white-space: nowrap;
        flex-shrink: 0;
    }

    .email-input {
        padding: 14px;
        border: 1px solid #ddd;
        border-radius: 8px;
        font-size: 14px;
    }

    .email-input:focus {
        outline: none;
        border-color: var(--primary);
    }

    .submit-btn {
        background: var(--primary);
        color: #fff;
        border: none;
        padding: 14px;
        border-radius: 8px;
        cursor: pointer;
        font-weight: 600;
        transition: 0.2s ease;
    }

    .submit-btn:hover {
        opacity: 0.9;
    }

    .bill-box {
        background: #fafafa;
        padding: 12px;
        border-radius: 10px;
        border: 1px solid #eee;
    }

    .bill-label {
        font-size: 13px;
        color: var(--muted);
        margin-bottom: 8px;
    }

    .bill-options {
        display: flex;
        gap: 16px;
        margin-bottom: 8px;
    }

    .option {
        display: flex;
        align-items: center;
        gap: 6px;
        cursor: pointer;
        font-size: 14px;
    }

    .option input {
        accent-color: var(--primary);
    }

    .whatsapp-input {
        display: none;
        width: 100%;
        padding: 12px;
        border: 1px solid #ddd;
        border-radius: 8px;
        transition: all 0.2s ease;
    }

    .hero-visual {
        position: relative;
        border-radius: 16px;
        height: 420px;
        max-width: 420px;
        width: 100%;
        overflow: hidden;
    }

    .hero-visual svg {
        width: 100%;
        height: 100%;
    }

    .hero-visual span {
        position: absolute;
        bottom: 16px;
        left: 20px;
        color: #fff;
        font-weight: 600;
        font-size: 18px;
        z-index: 2;
    }

    .features {
        padding: 48px 0;
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }

    .feature {
        padding: 20px;
        border-radius: 12px;
        background: #fafafa;
    }

    .feature h3 {
        margin-bottom: 10px;
    }

    .footer {
        text-align: center;
        padding: 40px;
        color: var(--muted);
    }

    .footer a {
        color: var(--primary);
        text-decoration: none;
        margin: 0 10px;
        font-size: 14px;
    }

    .modal {
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        display: none;
        align-items: center;
        justify-content: center;
        z-index: 1000;
    }

    .modal-content {
        background: #fff;
        max-width: 600px;
        width: 90%;
        padding: 24px;
        border-radius: 12px;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
        position: relative;
        font-size: 14px;
        line-height: 1.7;
        color: var(--muted);
    }

    .close-btn {
        position: absolute;
        top: 10px;
        right: 14px;
        cursor: pointer;
        font-size: 18px;
        color: #999;
    }

    @media (max-width: 912px) {
        .hero-text {
            max-width: 410px;
        }

        .hero-visual {
            max-width: 530px;
        }
        .bill-options {
            justify-content: center;
        }
    }

    @media (max-width: 900px) {
        header {
            padding: 16px;
        }

        .container {
            padding: 0 16px;
        }

        .hero {
            grid-template-columns: 1fr;
            padding: 24px 16px;
            gap: 20px;
        }

        .hero-text h1 {
            font-size: 32px;
        }

        .hero-text p {
            margin-bottom: 20px;
        }

        .email-box {
            flex-direction: column;
        }

        .email-box input,
        .email-box button {
            width: 100%;
        }

        .hero-visual {
            height: 360px;
        }

        .features {
            grid-template-columns: 1fr;
            padding: 24px 16px;
            gap: 16px;
            max-width: 100%;
        }

        .feature {
            padding: 16px;
        }
    }

    @media (max-width: 853px) {
        header {
            padding: 16px 20px;
        }

        .hero {
            grid-template-columns: 1fr;
            text-align: center;
            justify-items: center;
        }

        .hero-text {
            text-align: center;
            max-width: 100%;
        }

        .hero-text h1 {
            font-size: 28px;
        }

        .hero-text p {
            font-size: 15px;
        }

        .email-box {
            width: 100%;
            max-width: 400px;
            margin: 0 auto;
        }

        .hero-visual {
            margin: 0 auto;
            height: 320px;
        }

        .features {
            grid-template-columns: 1fr;
            text-align: center;
        }

        .feature {
            text-align: center;
        }

        .feature h3 {
            display: flex;
            justify-content: center;
            align-items: center;
        }
    }
    @media (max-width: 375px) {
        .cta-btn {
            padding: 15px 5px;
        }
    }
    @media (max-width: 344px) {
        header {
            display: block;
        }

        .logo {
            text-align: center;
        }

        .cta-btn {
            display: none;
        }
    }