body {
    background-color: #000000;
    color: #FFFFFF;
    overflow-x: hidden;
    /* เอา cursor: none; ออกไปแล้ว เพื่อให้ใช้เมาส์ปกติของระบบ */
}

/* Scroll Thread */
.thread-line {
    position: fixed;
    left: 50px;
    top: 0;
    width: 1px;
    background: linear-gradient(to bottom, transparent, #FFFFFF, transparent);
    height: 0%;
    z-index: 40;
    transition: height 0.1s linear;
}

@media (max-width: 768px) {
    .thread-line { left: 20px; }
}

/* Animations */
.reveal-text {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 1s cubic-bezier(0.2, 0.8, 0.2, 1), transform 1s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.reveal-text.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Services Grid Cards */
.service-grid-card {
    width: 100%;
    background-color: #050505;
    border: 1px solid #222222;
    border-radius: 16px;
    padding: 2.5rem;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.service-grid-card:hover {
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-4px); 
    background-color: #080808;
}

.service-grid-card .card-number {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-family: 'Syne', sans-serif;
    font-size: 5.5rem;
    line-height: 0.8;
    color: #111111;
    z-index: 0;
    transition: color 0.3s ease;
}

.service-grid-card:hover .card-number {
    color: #1a1a1a;
}

/* FAQ Accordion */
.zen-accordion {
    border-bottom: 1px solid #222222;
    transition: background-color 0.4s ease, border-color 0.4s ease;
    background-color: transparent;
}

.zen-accordion:hover:not(.active) {
    background-color: #0a0a0a;
}

.zen-accordion.active {
    background-color: #050505;
    border-color: #FFFFFF;
}

.zen-accordion-title {
    transition: all 0.4s ease;
}

.zen-accordion:hover .zen-accordion-title,
.zen-accordion.active .zen-accordion-title {
    color: #FFFFFF;
    padding-left: 15px;
}

.zen-accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.6s cubic-bezier(0.2, 0.8, 0.2, 1), opacity 0.5s ease, margin-top 0.4s ease;
    opacity: 0;
    margin-top: 0;
}

.zen-accordion.active .zen-accordion-content {
    max-height: 300px;
    opacity: 1;
    margin-top: 1rem;
}

.zen-accordion.active .zen-accordion-icon {
    transform: rotate(45deg);
    color: #FFFFFF;
}