html {
    background: #071713;
}

html,
body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', Arial, sans-serif;
    margin: 0;
    padding: 0;
    color: #f4fbf7;
    min-height: 100%;
    overflow-x: hidden;
    background: #071713;
}

body {
    min-height: 100dvh;
}

.page-shell {
    min-height: 100vh;
    min-height: 100dvh;
    width: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 1;
}

.bg-gradient {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    min-height: 100dvh;
    background:
        radial-gradient(circle at 18% 16%, rgba(104, 255, 200, 0.22), transparent 30%),
        radial-gradient(circle at 82% 22%, rgba(127, 204, 158, 0.2), transparent 28%),
        linear-gradient(145deg, #000f08 0%, #0a4531 46%, #05261c 100%);
    z-index: -1;
}

.container {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    flex: 1 0 auto;
    padding: 2em;
    max-width: 1200px;
    margin: 0 auto;
    gap: 2em;
    box-sizing: border-box;
}

.content {
    max-width: 610px;
    flex: 1;
}

.logo-image {
    width: 82px;
    height: 82px;
    border-radius: 22px;
    box-shadow: 0 18px 42px rgba(0, 0, 0, 0.28);
}

h1 {
    font-weight: 700;
    font-size: 3.3rem;
    margin: 0.42em 0 0.12em;
}

.subtitle {
    color: #a8e4c0;
    font-weight: 500;
    font-size: 1.55rem;
    margin-top: 0;
    margin-bottom: 0.8em;
}

.tagline {
    font-size: 1.45rem;
    font-weight: 400;
    line-height: 1.45;
    margin-bottom: 1.45em;
    color: rgba(244, 251, 247, 0.88);
}

.key-features {
    list-style-type: none;
    padding: 0;
    margin-bottom: 1.5em;
    text-align: left;
}

.key-features li {
    font-size: 1.08rem;
    font-weight: 400;
    line-height: 1.45;
    margin-bottom: 0.62em;
    position: relative;
    padding-left: 1.25em;
    color: rgba(244, 251, 247, 0.86);
}

.key-features li::before {
    content: '•';
    color: #68ffc8;
    position: absolute;
    left: 0;
    top: 0;
}

.download-button img {
    width: 200px;
}

.image-container {
    flex: 1;
    display: flex;
    justify-content: center;
}

.image-container img {
    width: 100%;
    max-width: 410px;
    height: auto;
    filter: drop-shadow(0 34px 55px rgba(0, 0, 0, 0.38));
}

.terms-content {
    font-size: 1rem;
    line-height: 1.6;
}

.terms-container {
    max-width: 820px;
    margin: 2em auto;
    padding: 1.5em;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.16);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-radius: 10px;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
}

footer {
    width: 100%;
    text-align: center;
    padding: 1em;
    color: rgba(244, 251, 247, 0.75);
    position: relative;
    z-index: 1;
    margin-top: auto;
    box-sizing: border-box;
}

a {
    color: #68ffc8;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    .container {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .key-features {
        text-align: left;
    }

    .image-container img {
        max-width: min(86vw, 360px);
        margin-top: 1em;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 1.35em;
    }

    h1 {
        font-size: 2.35rem;
    }

    .subtitle {
        font-size: 1.15rem;
    }

    .tagline {
        font-size: 1.05rem;
    }

    .download-button img {
        width: 180px;
    }
}