:root {
    --bg: #0b0c10;
    --panel: #121419;
    --text: #e8ecf1;
    --muted: #a7b0bc;
    --brand: #64b5f6;
    --accent: #8ec07c;
    --border: #20242c;
    --shadow: 0 2px 24px rgba(0, 0, 0, 0.25);
    --radius: 16px;
    --maxw: 1100px;
}

* {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
}

body {
    margin: 0;
    font:
        16px/1.6 system-ui,
        -apple-system,
        Segoe UI,
        Roboto,
        Ubuntu,
        Cantarell,
        Noto Sans,
        Arial,
        "Apple Color Emoji",
        "Segoe UI Emoji";
    color: var(--text);
    background: radial-gradient(
        1200px 800px at 70% -10%,
        #1b2030 0%,
        var(--bg) 60%
    );
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--brand);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

header {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: saturate(180%) blur(10px);
    background: rgba(11, 12, 16, 0.7);
    border-bottom: 1px solid var(--border);
}

.nav {
    max-width: var(--maxw);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 14px 20px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--text);
    font-weight: 700;
    letter-spacing: 0.3px;
}

.brand img {
    width: 32px;
    height: 32px;
    border-radius: 8px;
}

.menu {
    display: flex;
    gap: 18px;
    align-items: center;
}

.menu a {
    color: var(--text);
    opacity: 0.9;
}

.menu a:hover {
    opacity: 1;
}

.container {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 28px 20px;
}

.hero {
    padding: 64px 20px 24px;
    display: grid;
    gap: 16px;
}

.hero h1 {
    margin: 0;
    font-size: clamp(30px, 4.5vw, 52px);
    line-height: 1.15;
    letter-spacing: 0;
    max-width: 12ch;
}

.hero p {
    margin: 0;
    color: var(--muted);
    max-width: 70ch;
}

.cta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
    margin-top: 4px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--panel);
    color: var(--text);
    font-weight: 600;
}

.btn:hover {
    text-decoration: none;
    border-color: #2b3340;
}

.btn.primary {
    background: var(--brand);
    border-color: var(--brand);
    color: #0b0c10;
    font-weight: 700;
    box-shadow: var(--shadow);
}

.btn.primary:hover {
    filter: brightness(1.05);
}

.section {
    margin-top: 28px;
}

.section h2 {
    margin: 0 0 14px;
    font-size: clamp(22px, 3vw, 30px);
}

.muted {
    color: var(--muted);
}

.panel {
    background: linear-gradient(
        180deg,
        rgba(255, 255, 255, 0.02),
        rgba(255, 255, 255, 0)
    );
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.screens {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
    margin-top: 16px;
}

.screen {
    margin: 0;
    overflow: hidden;
    background: #0f1218;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    aspect-ratio: 1206 / 2622;
}

.screen img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
}

.features {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.feature {
    padding: 18px;
    display: grid;
    gap: 8px;
}

.badge {
    width: max-content;
    font-size: 12px;
    color: #0b0c10;
    background: var(--accent);
    display: inline-block;
    padding: 2px 8px;
    border-radius: 999px;
    font-weight: 700;
}

.feature h3 {
    margin: 4px 0 0;
    font-size: 18px;
}

.feature p {
    margin: 0;
    color: var(--muted);
}

.support {
    padding: 18px;
    display: grid;
    gap: 12px;
}

.support p {
    margin: 0;
}

footer {
    border-top: 1px solid var(--border);
    margin-top: 36px;
}

.foot {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
    justify-content: space-between;
    color: var(--muted);
}

@media (max-width: 920px) {
    .features {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 700px) {
    .nav {
        align-items: flex-start;
        flex-direction: column;
    }

    .menu {
        gap: 14px;
    }

    .screens,
    .features {
        grid-template-columns: 1fr;
    }

    .hero {
        padding-top: 44px;
    }

    .hero h1 {
        max-width: 100%;
    }

    .btn.primary {
        width: 100%;
        justify-content: center;
    }
}