:root {
    --bg-color: #050505;
    --text-color: #ffffff;
    --primary-color: #ff00ff; /* Neon Pink */
    --secondary-color: #00ffff; /* Neon Cyan */
    --accent-color: #7000ff; /* Purple */
    --surface-color: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --font-main: 'Noto Sans JP', sans-serif;
    --font-accent: 'Outfit', sans-serif;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3 {
    font-family: var(--font-accent);
    font-weight: 900;
}

a {
    text-decoration: none;
    color: inherit;
    transition: 0.3s;
}

/* Loader */
.loader-mask {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-color);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.loader-content {
    text-align: center;
}

.loading-text {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.5rem;
    color: var(--secondary-color);
    animation: glow 1.5s infinite alternate;
}


.logo {
    font-family: var(--font-accent);
    font-size: 1.5rem;
    font-weight: 900;
    letter-spacing: 2px;
}

.logo span {
    color: var(--primary-color);
    text-shadow: 0 0 10px var(--primary-color);
}

/* Container */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem;
    text-align: center;
}

/* Main Sections */
.section {
    padding: 100px 0;
}

/* Hero Section */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding: 60px 0;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.glow-circle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60vh;
    height: 60vh;
    background: radial-gradient(circle, var(--accent-color) 0%, transparent 70%);
    filter: blur(80px);
    opacity: 0.4;
    animation: pulse 8s infinite ease-in-out;
}

.grid-overlay {
    position: absolute;
    width: 200%;
    height: 200%;
    top: -50%;
    left: -50%;
    background-image: linear-gradient(var(--glass-border) 1px, transparent 1px),
                      linear-gradient(90deg, var(--glass-border) 1px, transparent 1px);
    background-size: 50px 50px;
    transform: perspective(500px) rotateX(60deg);
    opacity: 0.2;
}

.hero-container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 3rem;
    text-align: center;
}

.hero-visual {
    width: 100%;
    display: flex;
    justify-content: center;
    position: relative;
}

.hero-visual img {
    width: 100%;
    max-width: 500px;
    filter: drop-shadow(0 0 30px var(--accent-color));
    animation: float 6s infinite ease-in-out;
}

.hero-content {
    width: 100%;
}

.sub-title {
    display: block;
    font-size: 1.1rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero-title {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 2rem;
}

.highlight {
    color: var(--primary-color);
    text-shadow: 0 0 20px var(--primary-color);
}

.hero-description {
    font-size: 1.2rem;
    margin-bottom: 3rem;
    opacity: 0.8;
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1.2rem 2.5rem;
    border-radius: 5px;
    font-weight: 800;
    text-transform: uppercase;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    cursor: pointer;
    border: none;
    font-family: var(--font-accent);
}

.btn-primary {
    background: linear-gradient(45deg, var(--primary-color), var(--accent-color));
    color: white;
    box-shadow: 0 10px 30px rgba(255, 0, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 15px 40px rgba(255, 0, 255, 0.5);
}

.btn-secondary {
    background: linear-gradient(45deg, var(--secondary-color), #00aaff);
    color: var(--bg-color);
    box-shadow: 0 10px 30px rgba(0, 255, 255, 0.3);
}

.btn-sm {
    padding: 0.6rem 1.5rem;
    font-size: 0.8rem;
}

.btn-lg {
    padding: 1.4rem 3rem;
}

.btn-xl {
    padding: 1.8rem 4rem;
    font-size: 1.4rem;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--secondary-color);
    color: var(--secondary-color);
}

.btn-outline:hover {
    background: var(--secondary-color);
    color: var(--bg-color);
}

/* Cards & Glassmorphism */
.glass-card {
    background: var(--surface-color);
    backdrop-filter: blur(15px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 4rem;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    background: linear-gradient(90deg, #fff, var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.message-content p {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
}

/* Funsai Section */
.flex-cols {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    align-items: center;
    justify-items: center;
}

.benefit-card {
    background: linear-gradient(135deg, rgba(112, 0, 255, 0.2) 0%, rgba(255, 0, 255, 0.1) 100%);
    border: 1px solid var(--primary-color);
    padding: 3rem;
    border-radius: 20px;
    position: relative;
    overflow: hidden;
}

.benefit-card h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.benefit-tag {
    margin-top: 2rem;
    font-weight: 700;
    font-style: italic;
    color: var(--secondary-color);
}

/* Activity Grid */
.text-center {
    text-align: center;
}

.activity-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin: 4rem 0;
}

.activity-item {
    background: var(--surface-color);
    padding: 2.5rem;
    border-radius: 15px;
    text-align: center;
    border: 1px solid transparent;
    transition: 0.3s;
}

.activity-item:hover {
    border-color: var(--secondary-color);
    transform: translateY(-10px);
}

.activity-item .icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

/* Animations */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

@keyframes pulse {
    0%, 100% { opacity: 0.4; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 0.6; transform: translate(-50%, -50%) scale(1.1); }
}

@keyframes glow {
    from { text-shadow: 0 0 5px var(--secondary-color); }
    to { text-shadow: 0 0 20px var(--secondary-color), 0 0 30px var(--secondary-color); }
}

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

@keyframes btn-pulse {
    0% { box-shadow: 0 0 0 0 rgba(0, 255, 255, 0.7); }
    70% { box-shadow: 0 0 0 15px rgba(0, 255, 255, 0); }
    100% { box-shadow: 0 0 0 0 rgba(0, 255, 255, 0); }
}

/* Responsive */
@media (max-width: 968px) {
    .hero-container {
        flex-direction: column-reverse;
        text-align: center;
    }
    .hero-title {
        font-size: 3rem;
    }
    .hero-actions {
        justify-content: center;
    }
    .flex-cols {
        grid-template-columns: 1fr;
    }
    .activity-grid {
        grid-template-columns: 1fr;
    }
    .section-title {
        font-size: 2rem;
    }
    .hero-section {
        height: auto;
        padding-top: 60px;
    }
}