:root {
    --primary-color: #3f6bf5;
    --secondary-color: #00d4ff;
    --text-color: #333;
    --light-text: #666;
    --bg-color: #f8f9fa;
    --white: #ffffff;
    --border-color: #e1e4e8;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
    display: flex;
    align-items: center;
}

.logo img {
    height: 40px;
    width: auto;
    margin-right: 10px;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    font-weight: 500;
    transition: var(--transition);
}

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

.btn {
    padding: 8px 20px;
    border-radius: 5px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: inline-block;
    border: none;
}

.btn-outline {
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    background: transparent;
}

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

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

.btn-primary:hover {
    background: #2a4db8;
}

.menu-toggle {
    display: none;
    font-size: 24px;
    cursor: pointer;
}

/* Hero Section */
.hero {
    padding: 60px 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    text-align: left;
}

.hero .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

.hero-text {
    flex: 1;
    max-width: 650px;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.hero p {
    font-size: 1.2rem;
    color: var(--light-text);
    margin-bottom: 30px;
    line-height: 1.8;
}

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

.hero-qrcode {
    text-align: center;
    flex-shrink: 0;
    background: rgba(255, 255, 255, 0.5);
    padding: 20px;
    border-radius: 15px;
    backdrop-filter: blur(5px);
}

.hero-qrcode p {
    font-size: 1rem;
    color: var(--light-text);
    margin-bottom: 10px;
    font-weight: 500;
}

.hero-qrcode img {
    width: 160px;
    height: 160px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    background: var(--white);
    padding: 10px;
}

/* Features Section */
.section {
    padding: 50px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 30px;
}

.section-title h2 {
    font-size: 2rem;
    margin-bottom: 10px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.card {
    background: var(--white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
    border: 1px solid transparent;
}

.card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.card-icon {
    font-size: 40px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.card h3 {
    margin-bottom: 15px;
}

/* Platform Section Styles */
.platform-card {
    background: var(--white);
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
    border: 1px solid transparent;
    height: 100%;
}

.platform-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.platform-icon {
    width: 60px;
    height: 60px;
    background: rgba(63, 107, 245, 0.1);
    color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin: 0 auto 20px;
}

.platform-card h3 {
    margin-bottom: 20px;
    font-size: 1.2rem;
}

.platform-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.platform-tags span {
    background: #f1f3f5;
    color: #495057;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    transition: var(--transition);
}

.platform-tags span:hover {
    background: var(--primary-color);
    color: var(--white);
}

/* Footer */
footer {
    background: #2c3e50;
    color: var(--white);
    padding: 60px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    margin-bottom: 20px;
    font-size: 1.2rem;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col a {
    color: var(--white);
    transition: var(--transition);
}

.footer-col a:hover {
    color: var(--primary-color);
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #34495e;
    color: #bdc3c7;
}

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

/* Contact List in Footer */
.contact-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    line-height: 1.4;
}

.contact-list li i {
    margin-top: 4px;
    min-width: 16px;
}

/* Responsive */
@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--white);
        flex-direction: column;
        align-items: center;
        padding-top: 50px;
        transition: var(--transition);
    }

    .nav-links.active {
        left: 0;
    }

    /* Hero Responsive */
    .hero {
        text-align: center;
        padding: 40px 0;
    }

    .hero .container {
        flex-direction: column;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-qrcode {
        margin-top: 30px;
        width: 100%;
        max-width: 300px;
    }

    .hero h1 {
        font-size: 2rem;
    }
}

/* Page Specific Styles */
/* Features Page */
.feature-row {
    display: flex;
    align-items: center;
    gap: 50px;
    margin-bottom: 80px;
}

.feature-row:nth-child(even) {
    flex-direction: row-reverse;
}

.feature-content {
    flex: 1;
}

.feature-image {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-image img {
    transition: var(--transition);
    max-width: 90%;
    max-height: 400px;
    border-radius: 15px;
    filter: drop-shadow(0 10px 15px rgba(0, 0, 0, 0.1));
}

.feature-image img:hover {
    transform: translateY(-5px) scale(1.02);
    filter: drop-shadow(0 15px 25px rgba(0, 0, 0, 0.15));
}

@media (max-width: 768px) {
    .feature-row, .feature-row:nth-child(even) {
        flex-direction: column;
    }
}

/* Solutions Page */
.solution-tabs {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 10px 25px;
    border: none;
    background: #e9ecef;
    cursor: pointer;
    border-radius: 30px;
    font-weight: 600;
    transition: var(--transition);
}

.tab-btn.active, .tab-btn:hover {
    background: var(--primary-color);
    color: var(--white);
}

.solution-content {
    display: none;
    animation: fadeIn 0.5s;
}

.solution-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* FAQ */
.accordion-item {
    background: var(--white);
    border-radius: 5px;
    margin-bottom: 15px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.accordion-header {
    padding: 20px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    background: #fff;
    width: 100%;
    border: none;
    text-align: left;
    font-size: inherit;
    font-family: inherit;
    color: inherit;
}

.accordion-header:hover {
    background: #f1f1f1;
}

.accordion-content {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    background: #fafafa;
}

.accordion-content p {
    padding: 20px 0;
}

.accordion-item.active .accordion-content {
    max-height: 200px; /* Adjust as needed */
}