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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: #ffffff;
    color: #000000;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
}

main {
    max-width: 800px;
    width: 100%;
    text-align: center;
}

h1 {
    font-size: 48px;
    font-weight: 600;
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}

.tagline {
    font-size: 18px;
    color: #666666;
    margin-bottom: 60px;
}

.email-section {
    margin-bottom: 48px;
}

.email-prompt {
    font-size: 20px;
    color: #000000;
    margin-bottom: 24px;
    font-weight: 500;
}

.email-form {
    display: flex;
    gap: 12px;
    justify-content: center;
    align-items: stretch;
    max-width: 500px;
    margin: 0 auto;
}

#emailInput {
    flex: 1;
    padding: 14px 20px;
    font-size: 16px;
    border: 2px solid #000000;
    border-radius: 4px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    transition: all 0.2s ease;
}

#emailInput:focus {
    outline: none;
    border-color: #000000;
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.1);
}

#emailInput::placeholder {
    color: #999999;
}

.btn-submit {
    padding: 14px 32px;
    white-space: nowrap;
}

.thank-you-section {
    margin-bottom: 48px;
}

.thank-you-message {
    font-size: 24px;
    color: #000000;
    font-weight: 600;
    margin-bottom: 12px;
}

.thank-you-subtitle {
    font-size: 16px;
    color: #666666;
    margin-bottom: 24px;
}

.video-container {
    width: 100%;
    margin-bottom: 48px;
    border: 1px solid #000000;
    border-radius: 4px;
    overflow: hidden;
    background: #000000;
}

video {
    width: 100%;
    height: auto;
    display: block;
}

.download-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 14px 32px;
    background: #000000;
    color: #ffffff;
    text-decoration: none;
    border: 2px solid #000000;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.2s ease;
    cursor: pointer;
}

.btn:hover {
    background: #ffffff;
    color: #000000;
}

.help-text {
    margin-top: 8px;
    font-size: 14px;
    color: #666666;
}

.footer {
    margin-top: 60px;
    font-size: 14px;
    color: #666666;
}

.footer a {
    color: #000000;
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.2s ease;
}

.footer a:hover {
    opacity: 0.6;
}

/* Responsive */
@media (max-width: 768px) {
    h1 {
        font-size: 36px;
    }

    .tagline {
        font-size: 16px;
        margin-bottom: 40px;
    }

    .email-prompt {
        font-size: 18px;
    }

    .email-form {
        flex-direction: column;
        max-width: 100%;
    }

    #emailInput {
        width: 100%;
    }

    .btn-submit {
        width: 100%;
    }

    .video-container {
        margin-bottom: 32px;
    }

    .download-buttons {
        flex-direction: column;
        gap: 12px;
    }

    .btn {
        width: 100%;
    }
}