.scroll-btn {
    position: absolute;
    bottom: 2.5rem;                 /* расстояние от низа блока */
    left: 50%;
    bottom: 12%;
    transform: translateX(-50%);
    width: 52px;
    height: 52px;
    border: 2px solid rgba(92, 127, 208, 0.4);
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(6px);
    cursor: pointer;

    display: flex;
    align-items: center;
    justify-content: center;

    transition: border-color 0.25s, background 0.25s, transform 0.25s;

    z-index: 10;
    /* пульсирующая анимация */
    animation: pulse 2.4s ease-in-out infinite;
}

.scroll-btn:hover {
    /* border-color: rgba(255, 255, 255, 0.9); */
    border-color: rgba(92, 127, 208, 0.9);
    background: rgba(255, 255, 255, 0.15);
    animation-play-state: paused;   /* останавливаем пульс при наведении */
}

.scroll-btn:active {
    transform: translateX(-50%) scale(0.92);
}

/* стрелка SVG */
.scroll-btn svg {
    width: 20px;
    height: 20px;
    /* stroke: rgba(255, 255, 255, 1); */
    stroke: white;
    fill: none;
    stroke-width: 3.6;
    stroke-linecap: round;
    stroke-linejoin: round;
    /* покачивание стрелки */
    animation: bounce-arrow 2.4s ease-in-out infinite;
}

/* ───── АНИМАЦИИ ───── */
@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(92,127,208,0.9); }
    50%       { box-shadow: 0 0 0 12px rgba(255,255,255,0); }
}

@keyframes bounce-arrow {
    0%, 100% { transform: translateY(0); }
    50%       { transform: translateY(4px); }
}

/* ───── ВТОРОЙ БЛОК «О НАС» ───── */
/* #about {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: #faf9f7;
    color: #1a1a1a;
    padding: 4rem 2rem;
    text-align: center;
}

#about h2 {
    font-size: clamp(1.8rem, 4vw, 3.5rem);
    margin-bottom: 1.2rem;
    letter-spacing: 0.04em;
}

#about p {
    max-width: 560px;
    line-height: 1.8;
    color: #555;
    font-size: 1.05rem;
} */