/* Reset & Base */
* { margin: 0; padding: 0; box-sizing: border-box; }
body { 
    font-family: 'Microsoft YaHei', 'Heiti SC', sans-serif; 
    background-color: #0d0d0d; 
    /* Dark brick/concrete texture for neon to pop against */
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%231a1a1a' fill-opacity='0.4'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    color: #e0e0e0; 
    line-height: 1.6; 
    min-height: 100vh; 
    overflow-x: hidden; 
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* Theme Variables - Neon Tube */
:root {
    --bg-dark: #121212;
    --bg-darker: #080808;
    --neon-pink: #ff007f;
    --neon-cyan: #00f3ff;
    --neon-yellow: #ffea00;
    --neon-green: #00ff66;
    --neon-purple: #b000ff;
    --text-main: #ffffff;
    --text-muted: #999999;
}

/* Navigation */
.navbar { 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    padding: 20px 5%; 
    background: rgba(13, 13, 13, 0.9); 
    backdrop-filter: blur(2px);
    position: sticky; 
    top: 0; 
    z-index: 100; 
    border-bottom: 2px solid rgba(0, 243, 255, 0.2);
}
.nav-logo { 
    font-size: 24px; 
    font-weight: 900; 
    display: flex;
    align-items: center;
    gap: 10px;
    color: #fff;
    text-shadow: 0 0 5px var(--neon-cyan), 0 0 10px var(--neon-cyan);
}
.nav-logo svg {
    width: 32px;
    height: 32px;
    fill: none;
    stroke: var(--neon-cyan);
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    filter: drop-shadow(0 0 5px var(--neon-cyan));
}
.nav-links { display: flex; gap: 30px; align-items: center; font-weight: bold; }
.nav-links a { 
    color: var(--text-muted); 
    transition: all 0.3s; 
    font-size: 16px; 
}
.nav-links a:hover { 
    color: #fff; 
    text-shadow: 0 0 8px var(--neon-pink);
}
.btn-download-nav { 
    padding: 8px 24px; 
    background: transparent;
    color: #fff !important; 
    border: 2px solid var(--neon-pink);
    border-radius: 20px;
    box-shadow: 0 0 10px rgba(255, 0, 127, 0.4), inset 0 0 10px rgba(255, 0, 127, 0.4);
    text-shadow: 0 0 5px var(--neon-pink);
    transition: all 0.3s; 
}
.btn-download-nav:hover { 
    background: rgba(255, 0, 127, 0.2);
    box-shadow: 0 0 20px rgba(255, 0, 127, 0.8), inset 0 0 20px rgba(255, 0, 127, 0.8);
}

/* Hero Section */
.hero-wrapper {
    position: relative;
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 80px 5% 120px;
    overflow: hidden;
    background: radial-gradient(circle at center, rgba(18,18,18,0.8) 0%, rgba(8,8,8,1) 100%);
}

/* Neon Collage Graphic */
.neon-collage-container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0.15;
    pointer-events: none;
}

.neon-letters {
    display: flex;
    font-size: 180px;
    font-weight: 900;
    font-family: 'Arial Rounded MT Bold', 'Varela Round', sans-serif;
    text-transform: uppercase;
}

.neon-letters span {
    color: transparent;
    -webkit-text-stroke: 4px #fff;
}
.nl-1 { -webkit-text-stroke-color: var(--neon-cyan); filter: drop-shadow(0 0 20px var(--neon-cyan)); transform: rotate(-5deg) translateY(10px); }
.nl-2 { -webkit-text-stroke-color: var(--neon-pink); filter: drop-shadow(0 0 20px var(--neon-pink)); transform: rotate(3deg) translateY(-10px); }
.nl-3 { -webkit-text-stroke-color: var(--neon-yellow); filter: drop-shadow(0 0 20px var(--neon-yellow)); transform: rotate(-8deg); }
.nl-4 { -webkit-text-stroke-color: var(--neon-green); filter: drop-shadow(0 0 20px var(--neon-green)); transform: rotate(6deg) translateY(15px); }
.nl-5 { -webkit-text-stroke-color: var(--neon-purple); filter: drop-shadow(0 0 20px var(--neon-purple)); transform: rotate(-2deg); }
.nl-6 { -webkit-text-stroke-color: var(--neon-cyan); filter: drop-shadow(0 0 20px var(--neon-cyan)); transform: rotate(5deg) translateY(-5px); }
.nl-7 { -webkit-text-stroke-color: var(--neon-pink); filter: drop-shadow(0 0 20px var(--neon-pink)); transform: rotate(-6deg); }
.nl-8 { -webkit-text-stroke-color: var(--neon-yellow); filter: drop-shadow(0 0 20px var(--neon-yellow)); transform: rotate(4deg) translateY(10px); }

.neon-plane-bg {
    position: absolute;
    width: 600px;
    height: 600px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(15deg);
    z-index: -1;
}

.hero-content { 
    z-index: 10; 
    max-width: 1000px; 
    text-align: center;
    position: relative;
}

/* Main Title Neon Collage */
.hero-title {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 5px;
    font-size: 48px; /* Adjusted for longer title */
    font-weight: 900;
    margin-bottom: 30px;
    font-family: 'Arial Rounded MT Bold', sans-serif;
}
.hero-title span {
    color: #fff;
    display: inline-block;
    animation: flicker 4s infinite alternate;
}
.ht-cyan { text-shadow: 0 0 10px var(--neon-cyan), 0 0 20px var(--neon-cyan), 0 0 40px var(--neon-cyan); transform: rotate(-2deg); }
.ht-pink { text-shadow: 0 0 10px var(--neon-pink), 0 0 20px var(--neon-pink), 0 0 40px var(--neon-pink); transform: rotate(3deg); }
.ht-yellow { text-shadow: 0 0 10px var(--neon-yellow), 0 0 20px var(--neon-yellow), 0 0 40px var(--neon-yellow); transform: rotate(-1deg); }
.ht-green { text-shadow: 0 0 10px var(--neon-green), 0 0 20px var(--neon-green), 0 0 40px var(--neon-green); transform: rotate(2deg); }
.ht-purple { text-shadow: 0 0 10px var(--neon-purple), 0 0 20px var(--neon-purple), 0 0 40px var(--neon-purple); transform: rotate(-3deg); }

@keyframes flicker {
    0%, 18%, 22%, 25%, 53%, 57%, 100% { opacity: 1; }
    20%, 24%, 55% { opacity: 0.4; }
}

.hero p { 
    font-size: 20px; 
    margin-bottom: 40px; 
    color: #ddd;
    text-shadow: 0 2px 4px rgba(0,0,0,0.8);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    font-weight: bold;
    background: rgba(0,0,0,0.6);
    padding: 15px;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.1);
}

.hero-buttons { display: flex; gap: 20px; justify-content: center; margin-bottom: 60px; flex-wrap: wrap; }

.btn-neon-solid { 
    padding: 15px 35px; 
    font-size: 18px; 
    font-weight: bold; 
    color: #000; 
    background: var(--neon-cyan);
    border: none;
    border-radius: 30px;
    box-shadow: 0 0 15px var(--neon-cyan), 0 0 30px var(--neon-cyan);
    transition: all 0.3s;
}
.btn-neon-solid:hover { 
    transform: scale(1.05);
    box-shadow: 0 0 25px var(--neon-cyan), 0 0 50px var(--neon-cyan);
    background: #fff;
}

.btn-neon-outline { 
    padding: 15px 35px; 
    font-size: 18px; 
    font-weight: bold; 
    color: #fff; 
    background: rgba(0,0,0,0.5);
    border: 2px solid var(--neon-purple);
    border-radius: 30px;
    box-shadow: 0 0 10px rgba(176, 0, 255, 0.4), inset 0 0 10px rgba(176, 0, 255, 0.4);
    text-shadow: 0 0 5px var(--neon-purple);
    transition: all 0.3s;
    backdrop-filter: blur(2px);
}
.btn-neon-outline:hover { 
    background: rgba(176, 0, 255, 0.2);
    box-shadow: 0 0 20px rgba(176, 0, 255, 0.8), inset 0 0 20px rgba(176, 0, 255, 0.8);
}

.hero-images { 
    display: flex; 
    justify-content: center; 
    gap: 25px; 
    align-items: flex-end; 
}
.hero-images img { 
    max-width: 28%; 
    border-radius: 12px;
    border: 2px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 15px 35px rgba(0,0,0,0.8);
    transition: all 0.3s; 
}
.hero-images img:nth-child(1) { border-color: rgba(0, 243, 255, 0.5); box-shadow: 0 0 20px rgba(0, 243, 255, 0.2); }
.hero-images img:nth-child(2) { border-color: rgba(255, 0, 127, 0.5); box-shadow: 0 0 20px rgba(255, 0, 127, 0.2); transform: translateY(-15px); }
.hero-images img:nth-child(3) { border-color: rgba(255, 234, 0, 0.5); box-shadow: 0 0 20px rgba(255, 234, 0, 0.2); }

.hero-images img:hover { 
    transform: translateY(-20px); 
    filter: brightness(1.1);
}

/* Features Section */
.features { padding: 100px 5%; background: var(--bg-dark); position: relative; z-index: 10; border-top: 1px solid rgba(255,255,255,0.05);}
.section-title { 
    text-align: center; 
    font-size: 36px; 
    margin-bottom: 60px; 
    font-weight: 900;
    color: #fff;
    text-shadow: 0 0 10px var(--neon-cyan), 0 0 20px var(--neon-cyan);
}

.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; max-width: 1200px; margin: 0 auto; }

.feature-card { 
    padding: 40px 30px; 
    text-align: center; 
    background: rgba(20,20,20,0.8);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 12px;
    transition: all 0.3s; 
    position: relative;
    overflow: hidden;
}
.feature-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 3px;
    background: var(--neon-cyan);
    box-shadow: 0 0 10px var(--neon-cyan);
    opacity: 0;
    transition: opacity 0.3s;
}
.feature-card:nth-child(3n+1)::before { background: var(--neon-pink); box-shadow: 0 0 10px var(--neon-pink); }
.feature-card:nth-child(3n+2)::before { background: var(--neon-yellow); box-shadow: 0 0 10px var(--neon-yellow); }

.feature-card:hover { 
    transform: translateY(-5px); 
    background: rgba(30,30,30,0.9);
}
.feature-card:hover::before { opacity: 1; }

.feature-card h3 { 
    font-size: 22px; 
    margin-bottom: 15px; 
    font-weight: 900; 
    color: #fff;
}
.feature-card p { color: var(--text-muted); font-size: 15px;}

/* Blog Section */
.blog { padding: 100px 5%; background: var(--bg-darker); }
.blog-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 40px; max-width: 1100px; margin: 0 auto; }
.blog-card { 
    display: flex; 
    flex-direction: column; 
    background: var(--bg-dark);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.05);
    transition: all 0.3s;
}
.blog-card:hover { 
    transform: translateY(-5px); 
    border-color: rgba(0, 255, 102, 0.5);
    box-shadow: 0 10px 30px rgba(0,0,0,0.8), 0 0 20px rgba(0, 255, 102, 0.2);
}
.blog-card img { width: 100%; height: 260px; object-fit: cover; opacity: 0.7; transition: opacity 0.3s;}
.blog-card:hover img { opacity: 1; }
.blog-content { padding: 30px; }
.blog-date { display: inline-block; margin-bottom: 15px; font-size: 14px; color: var(--neon-green); font-weight: bold; text-shadow: 0 0 5px var(--neon-green);}
.blog-content h3 { font-size: 22px; margin-bottom: 15px; font-weight: 900; color: #fff;}
.blog-content p { color: var(--text-muted); margin-bottom: 0; }
.btn-more { 
    display: block; 
    width: 240px; 
    margin: 60px auto 0; 
    text-align: center; 
    padding: 15px; 
    background: transparent;
    color: #fff; 
    font-weight: bold; 
    border: 2px solid var(--neon-cyan);
    border-radius: 30px;
    box-shadow: 0 0 10px rgba(0, 243, 255, 0.3), inset 0 0 10px rgba(0, 243, 255, 0.3);
    text-shadow: 0 0 5px var(--neon-cyan);
    transition: all 0.3s; 
}
.btn-more:hover { 
    background: rgba(0, 243, 255, 0.1); 
    box-shadow: 0 0 20px rgba(0, 243, 255, 0.6), inset 0 0 20px rgba(0, 243, 255, 0.6); 
}

/* FAQ Section */
.faq { padding: 100px 5%; max-width: 900px; margin: 0 auto; background: var(--bg-dark); margin-top: 40px; margin-bottom: 80px; border-radius: 12px; border: 1px solid rgba(255,255,255,0.05);}
.faq-item { 
    background: rgba(255,255,255,0.02); 
    margin-bottom: 20px; 
    padding: 25px 30px; 
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.02);
    transition: all 0.3s;
}
.faq-item:hover { 
    background: rgba(255, 0, 127, 0.05); 
    border-color: rgba(255, 0, 127, 0.3);
    box-shadow: 0 0 15px rgba(255, 0, 127, 0.1);
}
.faq-question { font-size: 18px; font-weight: 900; margin-bottom: 12px; color: #fff;}
.faq-question::before { content: 'Q. '; color: var(--neon-pink); text-shadow: 0 0 5px var(--neon-pink);}
.faq-answer { color: var(--text-muted); font-size: 15px; }

/* Footer */
.footer { background: #050505; padding: 80px 5% 30px; color: #777; border-top: 1px solid rgba(255,255,255,0.05);}
.footer-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; max-width: 1200px; margin: 0 auto 50px; }
.footer-col h4 { font-size: 18px; color: #fff; margin-bottom: 25px; font-weight: 900; text-shadow: 0 0 5px rgba(255,255,255,0.5);}
.footer-col ul li { margin-bottom: 15px; }
.footer-col ul li a { color: #777; transition: all 0.2s; }
.footer-col ul li a:hover { color: var(--neon-cyan); text-shadow: 0 0 5px var(--neon-cyan);}
.footer-bottom { text-align: center; padding-top: 30px; border-top: 1px solid rgba(255,255,255,0.05); font-size: 14px;}

/* Download Page Grid */
.download-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 30px; max-width: 1100px; margin: 60px auto; padding: 0 5%; }
.download-card { 
    padding: 40px 30px; 
    text-align: center; 
    background: rgba(255,255,255,0.03); 
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.05);
    transition: all 0.3s;
}
.download-card:hover { 
    transform: translateY(-5px); 
    border-color: rgba(176, 0, 255, 0.5);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5), 0 0 20px rgba(176, 0, 255, 0.2);
}
.download-card h3 { font-size: 24px; margin-bottom: 15px; font-weight: 900; color: #fff;}
.download-card p { color: var(--text-muted); margin-bottom: 30px; font-size: 15px; }
.btn-dl-card { 
    display: inline-block; 
    padding: 12px 30px; 
    background: rgba(176, 0, 255, 0.1);
    color: #fff; 
    font-weight: bold; 
    border: 2px solid var(--neon-purple);
    border-radius: 30px;
    box-shadow: 0 0 10px rgba(176, 0, 255, 0.4), inset 0 0 10px rgba(176, 0, 255, 0.4);
    text-shadow: 0 0 5px var(--neon-purple);
    transition: all 0.3s; 
}
.btn-dl-card:hover { 
    background: rgba(176, 0, 255, 0.3); 
    box-shadow: 0 0 20px rgba(176, 0, 255, 0.8), inset 0 0 20px rgba(176, 0, 255, 0.8); 
}

/* Page specific headers */
.page-header { 
    padding: 100px 5% 80px; 
    text-align: center; 
    background: radial-gradient(circle at center, rgba(18,18,18,0.8) 0%, rgba(8,8,8,1) 100%);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}
.page-header-content {
    max-width: 800px;
    margin: 0 auto;
}
.page-header h1 { 
    font-size: 42px; 
    margin-bottom: 20px; 
    font-weight: 900;
    color: #fff;
    text-shadow: 0 0 10px var(--neon-pink), 0 0 20px var(--neon-pink);
}
.page-header p { font-size: 18px; color: var(--text-muted);}

/* === perf: reduce motion & lower GPU cost === */
.feature-card,
.blog-card,
.hero-content,
.glass-panel,
.pearl-card {
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
}
.navbar {
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation: none !important;
        transition: none !important;
        scroll-behavior: auto !important;
    }
}

/* perf: limit decorative infinite layers on mid/low-end devices */
@media (max-width: 768px) {
    .bubble:nth-child(n+3),
    .tiny-plane:nth-child(n+3),
    .bg-shard:nth-child(n+4),
    .orb:nth-child(n+2) {
        display: none !important;
    }
}