:root {
    --bg-color: #05050a;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --accent-1: #6366f1;
    --accent-2: #a855f7;
    --accent-3: #ec4899;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, .logo-en {
    font-family: 'Outfit', sans-serif;
}

::selection {
    background: var(--accent-2);
    color: white;
}

/* Background Animations */
.bg-orb {
    position: fixed;
    border-radius: 50%;
    filter: blur(100px);
    z-index: -1;
    opacity: 0.4;
    animation: float 20s infinite alternate cubic-bezier(0.4, 0, 0.2, 1);
}

.orb-1 {
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, var(--accent-1) 0%, transparent 70%);
    top: -20%;
    left: -10%;
}

.orb-2 {
    width: 50vw;
    height: 50vw;
    background: radial-gradient(circle, var(--accent-2) 0%, transparent 70%);
    bottom: -20%;
    right: -10%;
    animation-delay: -5s;
}

.orb-3 {
    width: 40vw;
    height: 40vw;
    background: radial-gradient(circle, var(--accent-3) 0%, transparent 70%);
    top: 40%;
    left: 30%;
    animation-delay: -10s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(60px, 80px) scale(1.1); }
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 5%;
}

.mx-auto {
    margin-left: auto;
    margin-right: auto;
}

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

/* Glassmorphism utility */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}

/* Typography Gradients */
.gradient-text {
    background: linear-gradient(135deg, var(--accent-1), var(--accent-3));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.animated-gradient {
    background-size: 200% auto;
    animation: shine 4s linear infinite;
}

@keyframes shine {
    0% { background-position: 0% center; }
    100% { background-position: 200% center; }
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    height: 80px;
    z-index: 1000;
    transition: all 0.3s ease;
    border-bottom: 1px solid var(--glass-border);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    display: flex;
    align-items: baseline;
    gap: 10px;
}

.logo-en {
    font-size: 26px;
    font-weight: 800;
    letter-spacing: 2px;
}

.logo-cn {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

.nav-links {
    display: flex;
    gap: 35px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--text-primary);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-1);
    transition: width 0.3s ease-in-out;
}

.nav-links a:hover::after, .nav-links a.active::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 25px;
    height: 2px;
    background-color: white;
    transition: 0.3s;
}

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
}

.hero-content {
    max-width: 800px;
}

.badge {
    display: inline-block;
    padding: 8px 18px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 30px;
    border: 1px solid rgba(168, 85, 247, 0.3);
    background: linear-gradient(90deg, rgba(99, 102, 241, 0.1), rgba(168, 85, 247, 0.1));
}

.hero-title {
    font-size: 5vw;
    line-height: 1.15;
    margin-bottom: 30px;
    font-weight: 800;
}

.hero-title span {
    font-size: 6vw;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 50px;
    max-width: 650px;
}

.hero-cta {
    display: flex;
    gap: 20px;
}

.btn {
    padding: 16px 36px;
    border-radius: 40px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    color: white;
    box-shadow: 0 10px 20px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-4px);
    box-shadow: 0 15px 30px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    color: white;
    border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-4px);
}

/* General Sections */
.section {
    padding: 140px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 70px;
}

.section-title {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 25px;
    line-height: 1.2;
}

.section-desc {
    color: var(--text-secondary);
    font-size: 18px;
    max-width: 650px;
    margin: 0 auto;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 30px;
}

.feature-card {
    padding: 40px 35px;
    border-radius: 28px;
    transition: transform 0.4s ease, border-color 0.4s ease;
    border: 1px solid var(--glass-border);
}

.feature-card:hover {
    transform: translateY(-12px);
    border-color: rgba(99, 102, 241, 0.4);
    background: linear-gradient(180deg, rgba(255,255,255,0.06) 0%, rgba(255,255,255,0.02) 100%);
}

.feature-icon {
    font-size: 44px;
    margin-bottom: 25px;
}

.feature-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
    font-weight: 700;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.7;
}

/* Media Flex */
.section-flex {
    display: flex;
    align-items: center;
    gap: 80px;
}

.flex-content {
    flex: 1.2;
}

.flex-image {
    flex: 1;
    height: 550px;
    border-radius: 32px;
    padding: 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    border: 1px solid rgba(255,255,255,0.1);
}

.media-list {
    list-style: none;
    margin-top: 45px;
}

.media-list li {
    display: flex;
    gap: 20px;
    margin-bottom: 35px;
}

.check-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 35px;
    height: 35px;
    background: linear-gradient(135deg, rgba(168, 85, 247, 0.2), rgba(236, 72, 153, 0.2));
    color: #ec4899;
    border-radius: 50%;
    font-weight: bold;
    flex-shrink: 0;
}

.media-list strong {
    font-size: 20px;
    margin-bottom: 8px;
    display: block;
}

.media-list p {
    color: var(--text-secondary);
    font-size: 15px;
}

.image-placeholder {
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at top right, rgba(99, 102, 241, 0.1), transparent 70%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.matrix-animation {
    display: flex;
    flex-direction: column;
    gap: 20px;
    width: 80%;
}

.matrix-animation span {
    padding: 20px 30px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 16px;
    font-weight: 600;
    color: white;
    backdrop-filter: blur(10px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    animation: floatingBox 6s infinite alternate ease-in-out;
}

.matrix-animation span:nth-child(2) { 
    animation-delay: -2s; 
    align-self: flex-end;
    background: linear-gradient(90deg, rgba(236, 72, 153, 0.1), rgba(255,255,255,0.05));
}
.matrix-animation span:nth-child(3) { 
    animation-delay: -4s; 
    animation-direction: alternate-reverse;
}

@keyframes floatingBox {
    0% { transform: translateY(0); }
    100% { transform: translateY(-15px); }
}

/* Awards */
.awards-container {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.award-item {
    background: linear-gradient(180deg, rgba(255,255,255,0.04) 0%, rgba(255,255,255,0.01) 100%);
    padding: 50px 35px;
    border-radius: 28px;
    min-width: 300px;
    text-align: center;
    border: 1px solid var(--glass-border);
    transition: transform 0.4s ease;
}

.award-item:hover {
    transform: translateY(-8px) scale(1.02);
    border-color: rgba(236, 72, 153, 0.4);
}

.award-trophy {
    font-size: 55px;
    margin-bottom: 20px;
    filter: drop-shadow(0 10px 10px rgba(0,0,0,0.5));
}

.award-item h4 {
    font-size: 22px;
    margin-bottom: 10px;
    font-weight: 700;
}

.award-item p {
    color: var(--text-secondary);
    font-size: 16px;
}

/* Footer */
.footer {
    padding: 80px 0 30px;
    margin-top: 80px;
    border-top-left-radius: 50px;
    border-top-right-radius: 50px;
    border-top: 1px solid var(--glass-border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 50px;
    margin-bottom: 60px;
}

.footer-left {
    max-width: 450px;
}

.footer-left h3 {
    font-size: 28px;
    margin-bottom: 25px;
    font-weight: 800;
}

.footer-left p {
    color: var(--text-secondary);
    font-size: 16px;
}

.wechat-box {
    padding: 30px 50px;
    border-radius: 24px;
    text-align: center;
    border: 1px solid rgba(7, 193, 96, 0.3);
    background: linear-gradient(180deg, rgba(7, 193, 96, 0.05) 0%, transparent 100%);
}

.wechat-box p {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.wechat-box h4 {
    font-size: 26px;
    color: #07c160;
    font-weight: 700;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--glass-border);
    color: var(--text-secondary);
    font-size: 14px;
}

/* Animations Triggered by Observer */
.reveal, .pop-in {
    opacity: 0;
}

.reveal {
    transform: translateY(50px);
    transition: all 0.9s cubic-bezier(0.5, 0, 0, 1);
}

.pop-in {
    transform: scale(0.9) translateY(20px);
    transition: all 0.7s cubic-bezier(0.5, 0, 0, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.pop-in.active {
    opacity: 1;
    transform: scale(1) translateY(0);
}

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }

/* Mobile Responsive */
@media (max-width: 900px) {
    .section-flex { flex-direction: column; }
    .hero-title { font-size: 40px; }
    .hero-title span { font-size: 48px; }
}

@media (max-width: 768px) {
    .hero-title { font-size: 34px; line-height: 1.2; }
    .hero-title span { font-size: 40px; }
    .hero-subtitle { font-size: 16px; }
    .nav-links { 
        display: none; 
        position: absolute;
        top: 80px;
        left: 0;
        width: 100%;
        background: rgba(5, 5, 10, 0.95);
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--glass-border);
    }
    .nav-links.active {
        display: flex;
    }
    .mobile-menu-btn { display: flex; }
    .hero-cta { flex-direction: column; }
    .section { padding: 80px 0; }
    .section-title { font-size: 32px; }
    .awards-container { flex-direction: column; align-items: center; }
}