.timeline-section {
    position: relative;
    overflow: hidden;
    padding: 160px 0;
    background: #050505;
}

.timeline-bg-image {
    position: absolute;
    inset: 0;
    background: url('../img/timeline-bg.jpg') center/cover no-repeat;
    opacity: .18;
    filter: grayscale(1) contrast(1.15) brightness(.75);
}

.timeline-bg-image::after {
    content: "";
    position: absolute;
    inset: 0;
    background:
            linear-gradient(90deg, rgba(0,0,0,.92), rgba(0,0,0,.55), rgba(0,0,0,.92)),
            linear-gradient(180deg, #050505 0%, transparent 35%, #050505 100%);
}

.timeline-bg-grid {
    position: absolute;
    inset: 0;
    opacity: .14;
    background-image:
            linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px),
            linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px);
    background-size: 80px 80px;
    mask-image: radial-gradient(circle at center, black 0%, transparent 72%);
}

.timeline-bg-glow {
    position: absolute;
    left: 50%;
    top: 45%;
    width: 760px;
    height: 760px;
    border-radius: 50%;
    background: rgba(212,175,55,.13);
    filter: blur(120px);
    transform: translate(-50%, -50%);
}

.timeline-head {
    position: relative;
    z-index: 2;
    max-width: 880px;
    margin: 0 auto 90px;
    text-align: center;
}

.timeline-head h2 {
    margin-top: 22px;
    font-size: clamp(2.5rem, 5vw, 5.4rem);
    line-height: .95;
    letter-spacing: -.055em;
    text-transform: uppercase;
    color: #fff;
}

.timeline-layout {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.timeline-card {
    position: relative;
    min-height: 330px;
    padding: 34px 28px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    overflow: hidden;
    border-radius: 28px;
    border: 1px solid rgba(255,255,255,.10);
    background:
            linear-gradient(145deg, rgba(255,255,255,.075), rgba(255,255,255,.018)),
            radial-gradient(circle at 20% 0%, rgba(212,175,55,.16), transparent 38%);
    box-shadow:
            0 30px 90px rgba(0,0,0,.42),
            inset 0 1px 0 rgba(255,255,255,.07);
    backdrop-filter: blur(18px);
    transition: .35s ease;
}

.timeline-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, transparent, rgba(255,255,255,.10), transparent);
    transform: translateX(-120%);
    transition: .7s ease;
}

.timeline-card:hover::before {
    transform: translateX(120%);
}

.timeline-card:hover {
    transform: translateY(-10px);
    border-color: rgba(212,175,55,.45);
    box-shadow:
            0 38px 110px rgba(0,0,0,.52),
            0 0 70px rgba(212,175,55,.12),
            inset 0 1px 0 rgba(255,255,255,.10);
}

.timeline-step {
    position: relative;
    z-index: 2;
    color: #e8c864;
    font-size: clamp(2.7rem, 4vw, 4.4rem);
    line-height: 1;
    font-weight: 800;
    letter-spacing: -.06em;
}

.timeline-card-line {
    position: relative;
    z-index: 2;
    width: 54px;
    height: 2px;
    margin: 34px 0;
    background: linear-gradient(90deg, #d4af37, transparent);
    box-shadow: 0 0 24px rgba(212,175,55,.45);
}

.timeline-card p {
    position: relative;
    z-index: 2;
    margin: 0;
    color: rgba(255,255,255,.76);
    font-size: 1.02rem;
    line-height: 1.75;
}

.timeline-card-2,
.timeline-card-4 {
    transform: translateY(44px);
}

.timeline-card-2:hover,
.timeline-card-4:hover {
    transform: translateY(34px);
}

@media (max-width: 1050px) {
    .timeline-layout {
        grid-template-columns: repeat(2, 1fr);
    }

    .timeline-card-2,
    .timeline-card-4 {
        transform: none;
    }

    .timeline-card-2:hover,
    .timeline-card-4:hover {
        transform: translateY(-10px);
    }
}

@media (max-width: 680px) {
    .timeline-section {
        padding: 110px 0;
    }

    .timeline-head {
        margin-bottom: 56px;
    }

    .timeline-layout {
        grid-template-columns: 1fr;
    }

    .timeline-card {
        min-height: auto;
        padding: 30px 26px;
        border-radius: 24px;
    }

    .timeline-step {
        font-size: 3rem;
    }
}