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

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #8b5cf6;
    --accent: #ec4899;
    --dark: #1e1b4b;
    --light: #f8fafc;
    --gray: #64748b;
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.12);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.15);
    --shadow-xl: 0 20px 60px rgba(99, 102, 241, 0.2);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    line-height: 1.8;
    color: #1e293b;
    background: linear-gradient(180deg, #f8fafc 0%, #eef2ff 100%);
    overflow-x: hidden;
}

.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(99, 102, 241, 0.3);
    border-radius: 50%;
    animation: float 15s infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) translateX(0);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100vh) translateX(100px);
        opacity: 0;
    }
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

header {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    color: #1e293b;
    padding: 20px 0;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(99, 102, 241, 0.1);
    transition: all 0.3s ease;
}

header.scrolled {
    padding: 15px 0;
    box-shadow: var(--shadow-md);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    font-size: 2.2rem;
    animation: spin 6s linear infinite;
}

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

.logo h1 {
    font-size: 1.6rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 32px;
    flex-wrap: wrap;
}

nav a {
    color: #475569;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    position: relative;
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-icon {
    font-size: 1.2rem;
}

nav a:hover {
    color: var(--primary);
}

nav a::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    width: 0;
    height: 3px;
    background: var(--gradient-1);
    transition: all 0.3s ease;
    transform: translateX(-50%);
    border-radius: 2px;
}

nav a:hover::after {
    width: 100%;
}

.hero {
    background: var(--gradient-1);
    color: white;
    padding: 120px 0 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    background: rgba(255,255,255,0.2);
    backdrop-filter: blur(10px);
    padding: 10px 24px;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 24px;
    border: 1px solid rgba(255,255,255,0.3);
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.hero h2 {
    font-size: 3.5rem;
    margin-bottom: 24px;
    font-weight: 800;
    letter-spacing: -1px;
    text-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

.hero p {
    font-size: 1.25rem;
    max-width: 900px;
    margin: 0 auto 40px;
    opacity: 0.95;
    line-height: 2;
}

.hero-features {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255,255,255,0.15);
    padding: 14px 28px;
    border-radius: 12px;
    font-weight: 600;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    transition: all 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-3px);
    background: rgba(255,255,255,0.25);
}

.feature-icon {
    font-size: 1.6rem;
}

.service-section {
    padding: 100px 0;
    position: relative;
}

.service-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    background: 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='%236366f1' fill-opacity='0.03'%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");
    z-index: 0;
}

.service-section.alt {
    background: linear-gradient(180deg, #fff 0%, #f8fafc 100%);
}

.service-section h2 {
    font-size: 2.5rem;
    margin-bottom: 60px;
    text-align: center;
    color: #1e293b;
    font-weight: 800;
    position: relative;
    display: inline-block;
    width: 100%;
}

.service-section h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 5px;
    background: var(--gradient-1);
    border-radius: 3px;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 32px;
}

.service-card {
    background: white;
    padding: 40px;
    border-radius: 24px;
    box-shadow: var(--shadow-md);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(99, 102, 241, 0.08);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: var(--gradient-1);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-xl);
}

.card-icon {
    font-size: 3.5rem;
    margin-bottom: 20px;
    display: inline-block;
    animation: float-icon 3s ease-in-out infinite;
}

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

.card-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--gradient-2);
    color: white;
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 700;
    box-shadow: 0 4px 15px rgba(245, 87, 108, 0.4);
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
    color: #1e293b;
    font-weight: 700;
}

.service-card p {
    color: #64748b;
    line-height: 1.9;
    font-size: 1rem;
}

.contact-section {
    background: var(--gradient-1);
    color: white;
    padding: 100px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.contact-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 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='%23ffffff' fill-opacity='0.05'%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");
}

.contact-section h2 {
    font-size: 2.5rem;
    margin-bottom: 50px;
    font-weight: 800;
    position: relative;
    z-index: 1;
}

.contact-info {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 1.3rem;
    background: rgba(255,255,255,0.18);
    padding: 24px 48px;
    border-radius: 16px;
    backdrop-filter: blur(15px);
    border: 2px solid rgba(255,255,255,0.3);
    font-weight: 600;
    transition: all 0.4s ease;
    cursor: pointer;
}

.contact-item:hover {
    transform: translateY(-8px) scale(1.05);
    background: rgba(255,255,255,0.3);
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
}

.contact-item .icon {
    font-size: 2.5rem;
}

footer {
    background: #0f172a;
    color: white;
    padding: 40px 0;
    text-align: center;
}

footer p {
    opacity: 0.7;
    font-size: 1rem;
}

@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        gap: 15px;
    }

    nav ul {
        gap: 15px;
        justify-content: center;
    }

    .logo h1 {
        font-size: 1.3rem;
    }

    .hero {
        padding: 80px 0 60px;
    }

    .hero h2 {
        font-size: 2.2rem;
    }

    .hero p {
        font-size: 1.05rem;
    }

    .hero-features {
        gap: 15px;
    }

    .feature-item {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .service-section {
        padding: 60px 0;
    }

    .service-section h2,
    .contact-section h2 {
        font-size: 1.8rem;
    }

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

    .service-card {
        padding: 30px;
    }

    .contact-info {
        flex-direction: column;
        gap: 20px;
    }

    .contact-item {
        font-size: 1.1rem;
        padding: 20px 30px;
    }
}