/* Website 62 - Carousel Card Slider Style */
:root {
    --primary-color: #3498db;
    --secondary-color: #2980b9;
    --accent-color: #1abc9c;
    --dark-color: #2c3e50;
    --light-color: #ecf0f1;
    --text-color: #34495e;
    --white: #ffffff;
    --shadow: 0 10px 40px rgba(52, 152, 219, 0.15);
    --shadow-lg: 0 20px 60px rgba(52, 152, 219, 0.25);
    --transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --gradient: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', -apple-system, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
    color: var(--text-color);
    line-height: 1.8;
    overflow-x: hidden;
}

.container {
    max-width: 1250px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header - Floating Style */
header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-radius: 0 0 20px 20px;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
}

.logo {
    font-size: 1.6rem;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    letter-spacing: -1px;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 8px;
}

nav a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 500;
    padding: 10px 20px;
    border-radius: 30px;
    transition: var(--transition);
    font-size: 0.95rem;
}

nav a:hover,
nav a.active {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
}

.mobile-menu-btn span {
    width: 28px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 3px;
    transition: var(--transition);
}

/* Hero Section - Large Cards */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #f0f4f8 0%, #e8eef5 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(52, 152, 219, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 10s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-30px) rotate(5deg); }
}

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

.hero h1 {
    font-size: 3.2rem;
    color: var(--dark-color);
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero h1 span {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-color);
    max-width: 600px;
    margin-bottom: 35px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.btn {
    padding: 14px 32px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: var(--gradient);
    color: var(--white);
    box-shadow: 0 8px 25px rgba(52, 152, 219, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(52, 152, 219, 0.5);
}

.btn-secondary {
    background: var(--white);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--white);
}

/* Section Styles */
section {
    padding: 100px 0;
    position: relative;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 2.5rem;
    color: var(--dark-color);
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient);
    border-radius: 2px;
}

.section-title p {
    color: var(--text-color);
    font-size: 1.1rem;
    margin-top: 20px;
}

/* Card Slider Section */
.card-slider-section {
    background: var(--white);
    overflow: hidden;
}

.card-slider-container {
    position: relative;
    max-width: 100%;
    overflow: hidden;
}

.card-slider-track {
    display: flex;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.card-slide {
    min-width: 350px;
    padding: 0 15px;
}

.feature-card {
    background: linear-gradient(145deg, #ffffff 0%, #f8f9fa 100%);
    border-radius: 25px;
    padding: 35px 30px;
    height: 100%;
    transition: var(--transition);
    border: 1px solid rgba(52, 152, 219, 0.1);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 6px;
    background: var(--gradient);
    transform: scaleX(0);
    transition: var(--transition);
}

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

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.card-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #e8f4fc 0%, #d4ebf9 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: 20px;
    transition: var(--transition);
}

.feature-card:hover .card-icon {
    transform: scale(1.1) rotate(5deg);
}

.feature-card h3 {
    color: var(--dark-color);
    font-size: 1.3rem;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-color);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* Slider Navigation */
.slider-nav {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 40px;
}

.slider-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--white);
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.slider-btn:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: scale(1.1);
}

.slider-dots {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
}

.slider-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #ddd;
    cursor: pointer;
    transition: var(--transition);
}

.slider-dot.active {
    background: var(--primary-color);
    transform: scale(1.2);
}

/* Grid Cards */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    max-width: 1200px;
    margin: 0 auto;
}

.card-item {
    background: var(--white);
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    transition: var(--transition);
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
}

.card-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow);
}

.card-item .icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #e8f4fc 0%, #d4ebf9 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2.5rem;
    transition: var(--transition);
}

.card-item:hover .icon {
    transform: scale(1.1);
}

.card-item h3 {
    color: var(--dark-color);
    margin-bottom: 12px;
}

.card-item p {
    color: var(--text-color);
    font-size: 0.9rem;
}

/* Stats Section */
.stats-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
}

.stats-section .section-title h2 {
    color: var(--white);
}

.stats-section .section-title p {
    color: rgba(255,255,255,0.8);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.stat-item {
    text-align: center;
    padding: 30px 20px;
    background: rgba(255,255,255,0.1);
    border-radius: 20px;
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.stat-item:hover {
    background: rgba(255,255,255,0.2);
    transform: translateY(-5px);
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 10px;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
}

/* Testimonials - Large Cards */
.testimonials-section {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.testimonial-card {
    background: var(--white);
    border-radius: 25px;
    padding: 40px 35px;
    position: relative;
    transition: var(--transition);
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.testimonial-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: 25px;
    left: 30px;
    font-size: 5rem;
    color: var(--primary-color);
    opacity: 0.15;
    font-family: Georgia, serif;
    line-height: 1;
}

.testimonial-card p {
    font-style: italic;
    color: var(--text-color);
    margin-bottom: 25px;
    position: relative;
    z-index: 1;
    font-size: 1.05rem;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.author-avatar {
    width: 55px;
    height: 55px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 700;
    font-size: 1.2rem;
}

.author-info strong {
    color: var(--dark-color);
    display: block;
}

.author-info span {
    color: var(--primary-color);
    font-size: 0.9rem;
}

/* Contact Section */
.contact-section {
    background: var(--white);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-card {
    background: linear-gradient(145deg, #f8f9fa 0%, #ffffff 100%);
    border-radius: 25px;
    padding: 40px 30px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid rgba(52, 152, 219, 0.1);
}

.contact-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow);
    border-color: var(--primary-color);
}

.contact-card .icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2rem;
    color: var(--white);
}

.contact-card h3 {
    color: var(--dark-color);
    margin-bottom: 10px;
}

.contact-card p {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 1.15rem;
}

/* Footer */
footer {
    background: linear-gradient(135deg, var(--dark-color) 0%, #1a252f 100%);
    color: rgba(255,255,255,0.7);
    padding: 60px 0 30px;
}

footer .logo {
    display: block;
    text-align: center;
    margin-bottom: 30px;
    font-size: 2rem;
}

footer p {
    text-align: center;
    padding: 25px 0;
    border-top: 1px solid rgba(255,255,255,0.1);
    margin-top: 30px;
}

/* Responsive */
@media (max-width: 768px) {
    nav ul {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        gap: 10px;
        border-radius: 0 0 20px 20px;
    }

    nav ul.active {
        display: flex;
    }

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

    .hero h1 {
        font-size: 2.2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .card-slide {
        min-width: 280px;
    }

    .section-title h2 {
        font-size: 1.8rem;
    }
}