:root {
    color-scheme: dark;
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: #050816;
    color: #eef2ff;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
}

body {
    background: radial-gradient(circle at top left, rgba(93, 215, 255, 0.18), transparent 28%),
        radial-gradient(circle at bottom right, rgba(0, 158, 255, 0.12), transparent 22%),
        linear-gradient(180deg, #050816 0%, #070a1a 100%);
    color: #eef2ff;
    line-height: 1.6;
}

.page-shell {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 40px 30px;
}

.hero {
    max-width: 860px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 28px;
    padding: 44px;
    box-shadow: 0 40px 100px rgba(0, 0, 0, 0.25);
}

.brand-row {
    display: flex;
    align-items: center;
    gap: 18px;
    flex-wrap: wrap;
}

.brand-mark {
    width: 68px;
    height: 68px;
    display: grid;
    place-items: center;
    border-radius: 18px;
    background: rgba(93, 215, 255, 0.18);
    border: 1px solid rgba(93, 215, 255, 0.26);
    font-size: 28px;
    font-weight: 700;
    color: #d7f7ff;
}

.eyebrow {
    margin: 0 0 8px;
    color: #8aa3c1;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    font-size: 0.82rem;
}

h1 {
    margin: 0;
    font-size: clamp(2.5rem, 4vw, 4rem);
    line-height: 1.03;
    letter-spacing: -0.04em;
}

.description {
    margin: 28px 0 32px;
    max-width: 680px;
    color: #d8e1ff;
    font-size: 1.05rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    margin-bottom: 32px;
}

.feature-grid div {
    padding: 22px 22px 20px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.feature-grid strong {
    display: block;
    margin-bottom: 8px;
    font-size: 1rem;
}

.notify-form {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 14px;
}

.notify-form input {
    width: 100%;
    padding: 16px 18px;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(255, 255, 255, 0.06);
    color: #eef2ff;
    font-size: 1rem;
}

.notify-form input::placeholder {
    color: #9bb3d8;
}

.notify-form button {
    padding: 16px 24px;
    border: none;
    border-radius: 16px;
    background: linear-gradient(135deg, #5dd7ff 0%, #20a1ff 100%);
    color: #050816;
    font-weight: 700;
    cursor: pointer;
    transition: transform 180ms ease, box-shadow 180ms ease;
}

.notify-form button:hover {
    transform: translateY(-1px);
    box-shadow: 0 16px 30px rgba(45, 176, 255, 0.22);
}

.footer-note {
    margin-top: 28px;
    text-align: center;
    color: #8090b6;
    font-size: 0.95rem;
}

.form-message {
    margin-top: 16px;
    font-size: 0.96rem;
    color: #9bb3d8;
}

.form-message.success {
    color: #8cf2c5;
}

.form-message.error {
    color: #ff9aa8;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

@media (max-width: 720px) {
    .page-shell {
        padding: 28px 18px;
    }

    .hero {
        padding: 32px 22px;
    }

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

    .notify-form {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 440px) {
    .brand-row {
        align-items: flex-start;
    }

    .brand-mark {
        width: 56px;
        height: 56px;
    }

    .description {
        font-size: 1rem;
    }
}