:root {
    --color-black: #000000;
    --color-gray-950: #0a0a0a;
    --color-gray-900: #111111;
    --color-gray-800: #1a1a1a;
    --color-gray-700: #222222;
    --color-gray-600: #333333;
    --color-gray-500: #555555;
    --color-gray-400: #777777;
    --color-gray-300: #aaaaaa;
    --color-gray-200: #d0d0d0;
    --color-gray-100: #e8e8e8;
    --color-white: #ffffff;
    --color-blue: #3B82F6;
    --color-blue-glow: rgba(59, 130, 246, 0.5);

    --font-primary: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;

    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    --spacing-4xl: 8rem;

    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);

    --border-radius-sm: 0.5rem;
    --border-radius-md: 1rem;
    --border-radius-lg: 1.5rem;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-black);
    color: var(--color-gray-100);
    line-height: 1.6;
    font-size: 16px;
    overflow-x: hidden;
}

.container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(0, 0, 0, 0.95);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
}

.logo-link {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-image {
    width: 48px;
    height: 48px;
    border-radius: var(--border-radius-sm);
}

.logo-text-container {
    display: flex;
    align-items: baseline;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-white);
    letter-spacing: -0.03em;
}

.logo-accent {
    color: var(--color-black);
    background: var(--color-white);
    padding: 0.2em 0.4em;
    margin-left: 0.1em;
    font-size: 1.25rem;
    font-weight: 800;
    border-radius: 2px;
}

.nav-links {
    display: flex;
    gap: var(--spacing-xl);
}

.nav-link {
    text-decoration: none;
    color: var(--color-gray-400);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition-fast);
    position: relative;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-blue);
    transition: var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-white);
}

.nav-link:hover::after {
    width: 100%;
}

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

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--color-white);
    transition: var(--transition-fast);
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 100px;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

.bg-grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 80px 80px;
}

.glow-effect {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.3;
}

.glow-1 {
    width: 600px;
    height: 600px;
    background: var(--color-blue);
    top: -100px;
    right: -100px;
    animation: glowPulse 8s ease-in-out infinite;
}

.glow-2 {
    width: 400px;
    height: 400px;
    background: var(--color-blue);
    bottom: -50px;
    left: -50px;
    animation: glowPulse 6s ease-in-out infinite reverse;
}

.glow-3 {
    width: 300px;
    height: 300px;
    background: var(--color-blue);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: glowPulse 10s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.2; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(1.1); }
}

.network-lines {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.5;
}

.network-svg {
    width: 100%;
    height: 100%;
}

.network-node {
    fill: var(--color-blue);
    animation: nodePulse 3s ease-in-out infinite;
}

.network-node:nth-child(odd) {
    animation-delay: 0.5s;
}

@keyframes nodePulse {
    0%, 100% { opacity: 0.3; r: 2; }
    50% { opacity: 1; r: 4; }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: var(--spacing-4xl) 0;
}

.hero-badge {
    display: inline-block;
    margin-bottom: var(--spacing-lg);
}

.badge-text {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--color-blue);
    padding: 0.5em 1.5em;
    border: 1px solid var(--color-blue);
    border-radius: 100px;
    background: rgba(59, 130, 246, 0.1);
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 900;
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin-bottom: var(--spacing-lg);
    color: var(--color-white);
}

.gradient-text {
    background: linear-gradient(135deg, var(--color-blue) 0%, var(--color-white) 50%, var(--color-blue) 100%);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 6s ease infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.5rem);
    color: var(--color-gray-400);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.6;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-3xl);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 0.95rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    text-decoration: none;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: var(--transition-normal);
}

.btn:hover::before {
    left: 100%;
}

.btn-wechat {
    background: linear-gradient(135deg, #07C160, #10B981);
    color: var(--color-white);
    border: none;
}

.btn-wechat:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 40px rgba(7, 193, 96, 0.4);
}

.btn-whatsapp {
    background: transparent;
    color: var(--color-white);
    border: 1px solid var(--color-gray-600);
}

.btn-whatsapp:hover {
    background: var(--color-gray-800);
    border-color: var(--color-gray-500);
    transform: translateY(-2px);
}

.btn-icon {
    font-size: 1.25rem;
}

.hero-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-3xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

.stat-value {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    color: var(--color-white);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
    font-variant-numeric: tabular-nums;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.stat-divider {
    width: 1px;
    height: 60px;
    background: rgba(255, 255, 255, 0.1);
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-2xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.scroll-indicator span {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--color-gray-500);
}

.scroll-line {
    width: 2px;
    height: 60px;
    background: linear-gradient(to bottom, var(--color-gray-400), transparent);
    animation: scrollLine 2s ease infinite;
}

@keyframes scrollLine {
    0%, 100% { transform: scaleY(1); transform-origin: top; }
    50% { transform: scaleY(0.5); transform-origin: top; }
}

.about,
.services,
.partners,
.why-us,
.contact {
    padding: var(--spacing-4xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-blue);
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-lg);
    color: var(--color-white);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
}

.about-text {
    padding-right: var(--spacing-lg);
}

.about-description {
    font-size: 1.125rem;
    color: var(--color-gray-400);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

.about-cards {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.about-card {
    background: var(--color-gray-900);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-md);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-normal);
}

.about-card:hover {
    border-color: var(--color-blue);
    transform: translateX(-4px);
    box-shadow: 0 0 30px rgba(59, 130, 246, 0.1);
}

.about-card .card-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

.about-card h4 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--color-white);
}

.about-card p {
    font-size: 0.95rem;
    color: var(--color-gray-500);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.service-card {
    background: var(--color-gray-900);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.service-card:hover {
    border-color: var(--color-blue);
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(59, 130, 246, 0.15);
}

.service-icon-wrap {
    width: 70px;
    height: 70px;
    background: var(--color-gray-800);
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    transition: var(--transition-normal);
}

.service-card:hover .service-icon-wrap {
    background: var(--color-blue);
}

.service-icon {
    font-size: 1.75rem;
}

.service-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-white);
}

.service-card p {
    font-size: 0.9rem;
    color: var(--color-gray-400);
    line-height: 1.6;
}

.service-glow {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at top, rgba(59, 130, 246, 0.1) 0%, transparent 50%);
    opacity: 0;
    transition: var(--transition-normal);
}

.service-card:hover .service-glow {
    opacity: 1;
}

.partners-marquee {
    overflow: hidden;
    padding: var(--spacing-xl) 0;
}

.marquee-track {
    display: flex;
    animation: marquee 20s linear infinite;
}

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.marquee-item {
    flex-shrink: 0;
    padding: 0 var(--spacing-4xl);
    font-size: clamp(1.5rem, 3vw, 3rem);
    font-weight: 800;
    color: var(--color-gray-700);
    letter-spacing: -0.02em;
    transition: var(--transition-fast);
}

.marquee-item:hover {
    color: var(--color-blue);
}

.why-us-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.why-card {
    background: var(--color-gray-900);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-md);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-normal);
    position: relative;
}

.why-card:hover {
    border-color: var(--color-blue);
    transform: translateY(-4px);
}

.why-number {
    font-size: 3rem;
    font-weight: 900;
    color: var(--color-gray-800);
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    line-height: 1;
}

.why-card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--color-white);
    padding-right: 50px;
}

.why-card p {
    font-size: 0.95rem;
    color: var(--color-gray-500);
    padding-right: 50px;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
}

.contact-info {
    padding-right: var(--spacing-lg);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.contact-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.contact-icon-wrap {
    width: 50px;
    height: 50px;
    background: var(--color-gray-800);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.contact-text h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-gray-400);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-xs);
}

.contact-text p {
    font-size: 1.125rem;
    color: var(--color-white);
}

.contact-qr {
    display: flex;
    justify-content: center;
    align-items: center;
}

.qr-container {
    background: var(--color-gray-900);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

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

.qr-pattern {
    width: 200px;
    height: 200px;
    margin-bottom: var(--spacing-md);
}

.qr-text {
    font-size: 0.9rem;
    color: var(--color-gray-400);
}

.footer {
    background: var(--color-gray-950);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

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

.footer-brand {
    margin-bottom: var(--spacing-xl);
}

.footer-brand .logo-accent {
    background: var(--color-white);
    color: var(--color-black);
}

.footer-tagline {
    color: var(--color-gray-500);
    margin-top: var(--spacing-sm);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.footer-links a {
    text-decoration: none;
    color: var(--color-gray-500);
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-white);
}

.footer-bottom {
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--color-gray-600);
    font-size: 0.85rem;
}

.floating-buttons {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    z-index: 1000;
}

.float-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    text-decoration: none;
    transition: var(--transition-normal);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.float-whatsapp {
    background: linear-gradient(135deg, #25D366, #128C7E);
}

.float-wechat {
    background: linear-gradient(135deg, #07C160, #10B981);
}

.float-btn:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
}

.scroll-reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

    .about-text {
        padding-right: 0;
    }

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
    }

    .hero-stats {
        gap: var(--spacing-xl);
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .why-us-content {
        grid-template-columns: 1fr;
    }

    .container {
        padding: 0 var(--spacing-md);
    }
}