* {
    font-family: 'Noto Sans JP', sans-serif;
}

.icon-bounce {
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.icon-pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.icon-spin-slow {
    animation: spin 4s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.icon-float {
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    25% { transform: translateY(-5px) rotate(5deg); }
    75% { transform: translateY(-5px) rotate(-5deg); }
}

.icon-wave {
    animation: wave 1.5s ease-in-out infinite;
}

@keyframes wave {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(15deg); }
    75% { transform: rotate(-15deg); }
}

.icon-shake {
    animation: shake 2s ease-in-out infinite;
}

@keyframes shake {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(-10deg); }
    75% { transform: rotate(10deg); }
}

.fullscreen-menu {
    transform: translateX(100%);
    transition: transform 0.3s ease-in-out;
}

.fullscreen-menu.active {
    transform: translateX(0);
}

.menu-line {
    transition: all 0.3s ease;
}

.hamburger.active .menu-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active .menu-line:nth-child(2) {
    opacity: 0;
}

.hamburger.active .menu-line:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

.gradient-bg {
    background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 50%, #0f172a 100%);
}

.card-hover {
    transition: all 0.2s ease;
}

.card-hover:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.3;
    z-index: 0;
}

.content-z {
    position: relative;
    z-index: 1;
}

.fa-icon {
    display: inline-block;
    fill: currentColor;
    width: 1em;
    height: 1em;
    vertical-align: -0.125em;
}

.content-below-fold {
    content-visibility: auto;
    contain-intrinsic-size: 500px;
}

.skip-to-content {
    position: absolute;
    left: -9999px;
    top: 0;
    z-index: 999;
    padding: 8px 16px;
    background: #22d3ee;
    color: #0f172a;
    font-weight: bold;
    text-decoration: none;
}

.skip-to-content:focus {
    left: 8px;
}