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

:root {
    --primary: #0a7ea4;
    --primary-dark: #086b8a;
    --background: #ffffff;
    --surface: #f5f5f5;
    --foreground: #11181C;
    --muted: #687076;
    --border: #E5E7EB;
    --success: #22C55E;
    --warning: #F59E0B;
    --error: #EF4444;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--foreground);
    line-height: 1.6;
    background: var(--background);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
.header {
    background: var(--background);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 24px;
    font-weight: 800;
    color: var(--foreground);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.nav {
    display: flex;
    gap: 32px;
}

.nav-link {
    color: var(--muted);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

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

/* Hero Section */
.hero {
    padding: 120px 0;
    text-align: center;
    background: linear-gradient(180deg, var(--background) 0%, var(--surface) 100%);
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    color: var(--foreground);
}

.hero-subtitle {
    font-size: 20px;
    color: var(--muted);
    margin-bottom: 40px;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 24px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 32px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 16px;
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(10, 126, 164, 0.2);
}

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

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

.btn-icon {
    font-size: 20px;
}

.hero-note {
    color: var(--muted);
    font-size: 14px;
}

/* Features Section */
.features {
    padding: 120px 0;
}

.section-title {
    font-size: 48px;
    font-weight: 800;
    text-align: center;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 20px;
    color: var(--muted);
    text-align: center;
    margin-bottom: 64px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.feature-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 32px;
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
}

.feature-card-premium {
    position: relative;
    background: linear-gradient(135deg, #fff9e6 0%, #ffffff 100%);
    border: 2px solid #fbbf24;
}

.premium-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    color: white;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
}

.feature-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    color: var(--primary);
}

.feature-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 12px;
}

.feature-description {
    color: var(--muted);
    line-height: 1.6;
}

/* Screenshots Section */
.screenshots {
    padding: 120px 0;
    background: var(--surface);
}

.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
}

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

.screenshot-img {
    width: 100%;
    max-width: 300px;
    height: auto;
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    margin-bottom: 16px;
}

.screenshot-caption {
    font-weight: 600;
    color: var(--muted);
}

/* Download Section */
.download {
    padding: 120px 0;
    text-align: center;
}

.download-content {
    max-width: 800px;
    margin: 0 auto;
}

.download-buttons {
    display: flex;
    gap: 24px;
    justify-content: center;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 32px;
    border-radius: 16px;
    text-decoration: none;
    transition: all 0.3s;
    min-width: 240px;
}

.download-btn-ios {
    background: #000;
    color: white;
}

.download-btn-android {
    background: #3DDC84;
    color: white;
}

.download-btn:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.2);
}

.download-btn-icon {
    font-size: 32px;
}

.download-btn-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.download-btn-label {
    font-size: 16px;
    font-weight: 600;
}

.download-btn-platform {
    font-size: 12px;
    opacity: 0.8;
}

.download-note {
    padding: 24px;
    background: var(--surface);
    border-radius: 12px;
}

.download-note p {
    color: var(--muted);
    font-size: 14px;
}

/* Payment Security Section */
.payment-security {
    padding: 80px 0;
    background: var(--surface);
    text-align: center;
}

.payment-security-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 8px;
}

.payment-security-subtitle {
    color: var(--muted);
    margin-bottom: 32px;
}

.payment-logos {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
}

.payment-logo-item {
    display: flex;
    align-items: center;
    opacity: 0.9;
}
.card-logos {
    display: flex;
    gap: 16px;
}

/* Footer */
.footer {
    background: var(--foreground);
    color: white;
    padding: 64px 0 32px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 48px;
    margin-bottom: 48px;
}

.footer-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-text {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 8px;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-link {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-link:hover {
    color: white;
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom-text {
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

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

    .nav {
        display: none;
    }

    .section-title {
        font-size: 32px;
    }

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

    .download-buttons {
        flex-direction: column;
    }

    .download-btn {
        width: 100%;
    }
}