body {
    margin: 0;
    background: #0d0f14;
    background: radial-gradient(circle at 20% 0%, #1c1f26, #0b0d10 70%);
    color: #ffffff;
    font-family: -apple-system, Inter, sans-serif;
    overflow-x: hidden;
}

/* glowing background */
.background-glow {
    position: fixed;
    width: 900px;
    height: 900px;
    background: radial-gradient(circle, rgba(80,110,255,0.3), transparent 70%);
    top: -250px;
    left: -250px;
    filter: blur(120px);
    z-index: -1;
}

.hero {
    padding: 90px 20px 60px;
    text-align: center;
}

.logo {
    width: 120px;
    height: 120px;
    border-radius: 24px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.4);
}

.title {
    font-size: 48px;
    font-weight: 700;
    margin: 20px 0 10px;
}

.subtitle {
    opacity: 0.75;
    font-size: 18px;
    max-width: 520px;
    margin: 0 auto 30px;
}

/* CTA */
.cta {
    padding: 14px 32px;
    background: linear-gradient(135deg, #4f6aff, #2941ff);
    border-radius: 14px;
    color: white;
    font-weight: 600;
    font-size: 18px;
    text-decoration: none;
    display: inline-block;
    box-shadow: 0 8px 25px rgba(50,70,255,0.45);
    transition: 0.25s;
}
.cta:hover {
    transform: translateY(-2px);
    filter: brightness(1.2);
}
.cta-big {
    font-size: 20px;
    padding: 18px 40px;
}

/* sections */
.section {
    max-width: 760px;
    margin: 40px auto;
    padding: 0 20px;
}

.section h2 {
    margin-bottom: 14px;
    font-size: 28px;
}

.card {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.07);
    border-radius: 18px;
    backdrop-filter: blur(12px);
    padding: 24px 28px;
    box-shadow: 0 14px 40px rgba(0,0,0,0.35);
    transition: 0.35s ease;
}
.card:hover {
    background: rgba(255,255,255,0.06);
    transform: translateY(-3px);
}

ul {
    opacity: 0.9;
    line-height: 1.6;
    font-size: 17px;
    padding-left: 20px;
}

.inline-cta {
    margin-top: 20px;
    display: inline-block;
}

/* footer */
footer {
    padding: 50px;
    text-align: center;
    opacity: 0.6;
    font-size: 16px;
}

/* ======================
   MOBILE FINAL MODE (A)
   ====================== */
@media (max-width: 600px) {

    /* Убираем все тяжелые элементы */
    .background-glow {
        display: none !important;
    }
    .logo {
        display: none !important;
    }

    /* Упрощаем фон */
    body {
        background: #0e1014 !important;
        background-image: none !important;
    }

    /* Упрощаем карточки */
    .card {
        backdrop-filter: none !important;
        background: rgba(255,255,255,0.05) !important;
        border: 1px solid rgba(255,255,255,0.07) !important;
        box-shadow: 0 5px 14px rgba(0,0,0,0.2) !important;
    }

    /* Герой-секция сдвигается вверх, раз нет аватарки */
    .hero {
        padding-top: 40px !important;
    }

    /* Анимации лёгкие */
    .scroll-up, .scroll-fade {
        transition: 0.5s ease-out !important;
    }

    /* Снижение нагрузки GPU */
    * {
        will-change: auto !important;
    }
}