* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Noto Sans HK", sans-serif;
    overflow: hidden;
    background: #000000;
    color: white;
    height: 100vh;
    margin: 0;
    padding: 15px;
    box-sizing: border-box;
}

/* Screen border */
body::before {
    content: '';
    position: fixed;
    top: 15px;
    left: 15px;
    right: 15px;
    bottom: 15px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    pointer-events: none;
    z-index: 10000;
}

/* Particle Canvas */
#particleCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

/* Main Container */
.container {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100vh;
    text-align: center;
    padding: 20px;
}

/* Logo Container */
.logo-container {
    margin-bottom: 20px;
}

/* Button Container */
.button-container {
    display: flex;
    gap: 15px;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}

.logo {
    max-width: 300px;
    width: 45%;
    height: auto;
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.3));
    transform-origin: center center;
    transition: transform 0.6s ease-in-out;
}

.logo:hover {
    transform: rotate(180deg);
}

/* Logo Link */
.logo-link {
    display: inline-block;
    color: white;
    font-size: .9rem;
    font-weight: 500;
    text-decoration: none;
    padding: 6px 15px;
    border: 1px solid white;
    border-radius: 8px;
    transition: all 0.3s ease;
    letter-spacing: 1px;
    min-width: 120px;
    text-align: center;
	margin-bottom:10px;
}

.logo-link:hover {
    background: rgba(174, 186, 191, 1);
    color: white;
    transform: translateY(-0px);
    box-shadow: 0 0px 20px rgba(174, 186, 191, 1);
	border: 1px solid rgba(174, 186, 191, 1);
}

/* White Circle Transition */
.circle-transition {
    position: fixed;
    top: 50%;
    left: 50%;
    width: 300vmax;
    height: 300vmax;
    background: white;
    border-radius: 50%;
    transform: translate(-50%, -50%) scale(0);
    z-index: 100000;
    pointer-events: none;
    transition: transform 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.circle-transition.active {
    transform: translate(-50%, -50%) scale(1);
}

/* Initial Page Load White Circle */
.circle-intro {
    position: fixed;
    top: 50%;
    left: 50%;
    width: 300vmax;
    height: 300vmax;
    background: white;
    border-radius: 50%;
    transform: translate(-50%, -50%) scale(1);
    z-index: 100001;
    pointer-events: none;
    animation: shrinkCircle 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes shrinkCircle {
    0% {
        transform: translate(-50%, -50%) scale(1);
    }
    100% {
        transform: translate(-50%, -50%) scale(0);
    }
}

/* Footer */
.footer {
    position: fixed;
    bottom: 20px;
    left: 0;
    right: 0;
    text-align: center;
    z-index: 2;
}

.footer p {
    color: white;
    font-size: 0.7rem;
    opacity: 0.8;
    margin: 0;
    letter-spacing: 1px;
}

/* Mouse Follower */
.mouse-follower {
    position: fixed;
    width: 20px;
    height: 20px;
    pointer-events: none;
    z-index: 9999;
    display: none;
}

.mouse-follower.active {
    display: block;
}

.mouse-follower svg {
    width: 100%;
    height: 100%;
}

.mouse-follower circle {
    fill: none;
    stroke: rgba(255, 255, 255, 0.8);
    stroke-width: 2;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* Content */
.content h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 15px;
    text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.3);
}

.tagline {
    font-size: 1.5rem;
    font-weight: 300;
    margin-bottom: 40px;
    opacity: 0.9;
    letter-spacing: 2px;
}

/* CTA Buttons */
.cta-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
}

.btn {
    padding: 15px 40px;
    font-size: 1.1rem;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
    letter-spacing: 1px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.btn-primary {
    background: white;
    color: #667eea;
}

.btn-primary:hover {
    background: #f0f0f0;
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 1s ease-out forwards;
}

.fade-in-delay {
    opacity: 0;
    animation: fadeIn 1s ease-out 0.3s forwards;
}

.fade-in-delay-2 {
    opacity: 0;
    animation: fadeIn 1s ease-out 0.6s forwards;
}

/* Responsive Design */
@media (max-width: 768px) {
	body::before {
        top: 11px;
        left: 11px;
        right: 11px;
        bottom: 11px;
    }
    .logo {
        max-width: 300px;
    }
	.logo-container {
		margin-top: -50px;
	}
	.button-container {
		flex-direction: column;
		gap: 10px;
		width: 100%;
		max-width: 200px;
	}
	.logo-link {
		font-size: .9rem;
		padding: 5px 12px;
		width: 100%;
		text-align: center;
	}
}

@media (max-width: 480px) {
	body::before {
        top: 7px;
        left: 7px;
        right: 7px;
        bottom: 7px;
    }
    .logo {
        max-width: 300px;
    }
	.logo-container {
		margin-top: -50px;
	}
	.button-container {
		flex-direction: column;
		gap: 10px;
		width: 100%;
		max-width: 180px;
	}
	.logo-link {
		font-size: .9rem;
		padding: 5px 10px;
		width: 100%;
		text-align: center;
	}
}