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

:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --accent-color: #ec4899;
    --dark-bg: #0f172a;
    --light-bg: #f8fafc;
    --text-dark: #1e293b;
    --text-light: #f1f5f9;
    --text-gray: #64748b;
    --border-color: #e2e8f0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 
                 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    overflow-x: hidden;
}

/* Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: width 0.3s ease;
}

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

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    overflow: hidden;
    padding: 4rem 2rem;
    margin-top: 0;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
}

.particle-container {
    position: absolute;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.floating-shape {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(2px);
    animation: float 20s infinite ease-in-out;
    box-shadow: 0 8px 32px rgba(255, 255, 255, 0.1);
}

.shape-1 {
    width: 400px;
    height: 400px;
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 250px;
    height: 250px;
    top: 60%;
    right: 10%;
    animation-delay: -7s;
}

.shape-3 {
    width: 300px;
    height: 300px;
    bottom: 10%;
    left: 50%;
    animation-delay: -14s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg) scale(1);
    }
    33% {
        transform: translate(30px, -50px) rotate(120deg) scale(1.1);
    }
    66% {
        transform: translate(-20px, 20px) rotate(240deg) scale(0.9);
    }
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: white;
    max-width: 900px;
}

.company-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: 0.75rem 2rem;
    border-radius: 50px;
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    letter-spacing: 0.05em;
    animation: fadeInDown 1s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.1;
    text-shadow: 2px 2px 20px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1s ease;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 2rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    animation: fadeInUp 1s ease 0.2s both;
    opacity: 0.95;
}

.hero-description {
    font-size: 1.3rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
    animation: fadeInUp 1s ease 0.4s both;
    font-weight: 300;
}

.cta-button {
    background: white;
    color: var(--primary-color);
    border: none;
    padding: 1.2rem 3.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    animation: fadeInUp 1s ease 0.6s both;
    position: relative;
    overflow: hidden;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(99, 102, 241, 0.1);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.cta-button:hover::before {
    width: 300px;
    height: 300px;
}

.cta-button:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* About Section */
.about-section {
    padding: 6rem 0;
    background: var(--light-bg);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.about-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.about-card {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.about-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

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

.about-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 16px 50px rgba(0, 0, 0, 0.15);
}

.card-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    display: inline-block;
    transition: transform 0.3s ease;
}

.about-card:hover .card-icon {
    transform: scale(1.2) rotate(5deg);
}

.about-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
    font-weight: 600;
}

.about-card p {
    color: var(--text-gray);
    line-height: 1.8;
}

/* Contact Section */
.contact-section {
    padding: 6rem 0;
    background: linear-gradient(180deg, white 0%, var(--light-bg) 100%);
}

.section-description {
    text-align: center;
    color: var(--text-gray);
    font-size: 1.1rem;
    margin-bottom: 3rem;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background: white;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.contact-form:hover {
    box-shadow: 0 12px 50px rgba(0, 0, 0, 0.12);
}

.form-group {
    margin-bottom: 1.5rem;
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-dark);
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s ease;
    font-family: inherit;
    background: var(--light-bg);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background: white;
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
    transform: translateY(-2px);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
    margin-bottom: 2rem;
}

.checkbox-group label {
    display: flex;
    align-items: flex-start;
    cursor: pointer;
    font-weight: 400;
    font-size: 0.9rem;
    line-height: 1.5;
}

.checkbox-group input[type="checkbox"] {
    width: auto;
    margin-right: 0.75rem;
    margin-top: 0.2rem;
    cursor: pointer;
    transform: scale(1.2);
}

.submit-btn {
    width: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    padding: 1.2rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.submit-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

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

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(99, 102, 241, 0.35);
}

.submit-btn:active {
    transform: translateY(-1px);
}

.form-message {
    margin-top: 1.5rem;
    padding: 1rem;
    border-radius: 12px;
    text-align: center;
    font-weight: 600;
    display: none;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-message.success {
    background: linear-gradient(135deg, #d1fae5, #a7f3d0);
    color: #065f46;
    display: block;
    border: 2px solid #10b981;
}

.form-message.error {
    background: linear-gradient(135deg, #fee2e2, #fecaca);
    color: #991b1b;
    display: block;
    border: 2px solid #ef4444;
}

/* Footer */
.footer {
    background: var(--dark-bg);
    color: var(--text-light);
    padding: 2rem 0;
    text-align: center;
}

.footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: var(--text-light);
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer-links a:hover {
    opacity: 1;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.8rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .company-badge {
        font-size: 1.1rem;
        padding: 0.65rem 1.75rem;
    }
    
    .nav-menu {
        gap: 1rem;
        font-size: 0.9rem;
    }
    
    .footer .container {
        flex-direction: column;
        text-align: center;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .contact-form {
        padding: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .floating-shape {
        opacity: 0.5;
    }
    
    .shape-1 {
        width: 250px;
        height: 250px;
    }
    
    .shape-2 {
        width: 150px;
        height: 150px;
    }
    
    .shape-3 {
        width: 200px;
        height: 200px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
        letter-spacing: -0.01em;
    }
    
    .hero-subtitle {
        font-size: 1.5rem;
    }
    
    .hero-description {
        font-size: 0.95rem;
    }
    
    .company-badge {
        font-size: 1rem;
        padding: 0.6rem 1.5rem;
        margin-bottom: 1.5rem;
    }
    
    .cta-button {
        padding: 1rem 2.5rem;
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .nav-menu {
        gap: 0.75rem;
        font-size: 0.85rem;
    }
    
    .logo {
        font-size: 1.25rem;
    }
    
    .contact-form {
        padding: 1.5rem;
    }
    
    .about-card {
        padding: 2rem;
    }
    
    .card-icon {
        font-size: 2.5rem;
    }
}