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

:root {
    --primary-blue: #2563eb;
    --dark-blue: #1e40af;
    --light-blue: #3b82f6;
    --accent-red: #ef4444;
    --dark-red: #dc2626;
    --bg-dark: #0f172a;
    --bg-light: #f8fafc;
    --text-dark: #1e293b;
    --text-light: #64748b;
    --white: #ffffff;
    --gradient-1: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
    --gradient-2: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    --gradient-3: linear-gradient(135deg, #2563eb 0%, #ef4444 100%);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--bg-light);
    overflow-x: hidden;
}

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

.navbar {
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

.mobile-menu-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border-radius: 10px;
    border: 2px solid rgba(37, 99, 235, 0.15);
    background: #fff;
}

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

.nav-brand {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-blue);
}

.logo-text {
    background: var(--gradient-3);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

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

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

.btn-primary {
    background: var(--gradient-1);
    color: var(--white) !important;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    transition: transform 0.3s, box-shadow 0.3s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
    background: var(--white);
    color: var(--primary-blue) !important;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    border: 2px solid var(--primary-blue);
    transition: all 0.3s;
}

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
    text-decoration: none;
    display: inline-block;
}

.hero {
    background: var(--gradient-1);
    color: var(--white);
    padding: 6rem 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="40" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="2"/></svg>');
    opacity: 0.1;
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.gradient-text {
    display: block;
    font-size: 4rem;
    margin-bottom: 0.5rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    opacity: 0.95;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin-bottom: 4rem;
}

.hero-stats {
    display: flex;
    gap: 4rem;
    justify-content: center;
    padding-top: 3rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

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

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
}

.features-section {
    padding: 6rem 0;
    background: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--bg-light);
    padding: 2.5rem;
    border-radius: 16px;
    transition: transform 0.3s, box-shadow 0.3s;
    border: 2px solid transparent;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-blue);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

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

.feature-list {
    list-style: none;
    padding: 0;
}

.feature-list li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-light);
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-blue);
    font-weight: bold;
}

.referral-section {
    padding: 6rem 0;
    background: var(--gradient-1);
    color: var(--white);
}

.referral-section .section-title,
.referral-section .section-subtitle {
    color: var(--white);
}

.referral-content {
    display: grid;
    gap: 3rem;
}

.referral-benefits h3,
.referral-requirements h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}

.benefit-item {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
    margin-bottom: 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    padding: 1.5rem;
    border-radius: 12px;
    backdrop-filter: blur(10px);
}

.benefit-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.benefit-text {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.benefit-text strong {
    font-size: 1.1rem;
}

.highlight {
    color: #fbbf24;
    font-weight: 700;
    font-size: 1.2rem;
}

.requirement-card {
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 12px;
    backdrop-filter: blur(10px);
}

.requirement-card p {
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.referral-cta {
    text-align: center;
    margin-top: 2rem;
}

.earning-potential {
    background: rgba(255, 255, 255, 0.15);
    padding: 2.5rem;
    border-radius: 16px;
    margin-bottom: 2rem;
    backdrop-filter: blur(10px);
}

.earning-potential h4 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}

.calculation {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.calc-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 1.5rem 2rem;
    border-radius: 12px;
    min-width: 150px;
}

.calc-item span {
    display: block;
    margin-bottom: 0.5rem;
    opacity: 0.9;
}

.calc-item strong {
    display: block;
    font-size: 2rem;
    color: #fbbf24;
}

.highlight-calc {
    background: rgba(251, 191, 36, 0.2);
    border: 2px solid #fbbf24;
}

.vip-section {
    padding: 6rem 0;
    background: var(--bg-light);
}

.vip-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.vip-card {
    background: var(--white);
    padding: 2.5rem 1.5rem;
    border-radius: 16px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
    border: 2px solid transparent;
}

.vip-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.vip-card.featured {
    background: var(--gradient-1);
    color: var(--white);
    transform: scale(1.05);
}

.vip-badge {
    display: inline-block;
    background: var(--gradient-2);
    color: var(--white);
    padding: 0.5rem 1.5rem;
    border-radius: 20px;
    font-weight: 700;
    margin-bottom: 1rem;
}

.vip-card.featured .vip-badge {
    background: rgba(255, 255, 255, 0.3);
}

.vip-card h4 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.vip-card p {
    color: var(--text-light);
}

.vip-card.featured p {
    color: rgba(255, 255, 255, 0.9);
}

.why-choose {
    padding: 6rem 0;
    background: var(--white);
}

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

.reason-item {
    text-align: center;
    padding: 2rem;
}

.reason-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.reason-item h4 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.reason-item p {
    color: var(--text-light);
}

.download-section {
    padding: 6rem 0;
    background: var(--gradient-3);
    color: var(--white);
    text-align: center;
}

.download-content h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.download-content > p {
    font-size: 1.3rem;
    margin-bottom: 3rem;
    opacity: 0.95;
}

.download-buttons {
    display: flex;
    gap: 2rem;
    justify-content: center;
    margin-bottom: 3rem;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: rgba(255, 255, 255, 0.15);
    padding: 1rem 2rem;
    border-radius: 12px;
    text-decoration: none;
    color: var(--white);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    transition: all 0.3s;
}

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

.download-icon {
    font-size: 2.5rem;
}

.download-btn div {
    text-align: left;
}

.download-btn small {
    display: block;
    font-size: 0.8rem;
    opacity: 0.8;
}

.download-btn strong {
    display: block;
    font-size: 1.2rem;
}

.social-proof {
    max-width: 800px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.1);
    padding: 2.5rem;
    border-radius: 16px;
    backdrop-filter: blur(10px);
}

.promo-text {
    font-size: 1.1rem;
    line-height: 1.8;
}

.footer {
    background: var(--bg-dark);
    color: var(--white);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand h3 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
}

.footer-brand p {
    opacity: 0.8;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-column h4 {
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.footer-column a {
    display: block;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    margin-bottom: 0.5rem;
    transition: color 0.3s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.7;
}

@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }

    .navbar .container {
        position: relative;
        gap: 0.75rem;
    }

    .nav-brand {
        font-size: 1.25rem;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .nav-links {
        display: none;
    }

    .hero {
        padding: 4rem 0;
    }

    .features-section,
    .referral-section,
    .vip-section,
    .why-choose,
    .download-section {
        padding: 4rem 0;
    }

    .feature-card {
        padding: 2rem;
    }

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

    .gradient-text {
        font-size: 2.5rem;
    }

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

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero-stats {
        flex-direction: column;
        gap: 2rem;
    }

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

    .calculation {
        flex-direction: column;
    }

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

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

    .download-buttons {
        flex-direction: column;
        align-items: center;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: 2rem;
    }

    .download-content h2 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 14px;
    }

    .hero-title {
        font-size: 1.5rem;
    }

    .gradient-text {
        font-size: 2rem;
    }

    .btn-large {
        padding: 0.8rem 1.5rem;
        font-size: 1rem;
    }

    .feature-card {
        padding: 1.5rem;
    }
}

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

.feature-card,
.vip-card,
.reason-item {
    animation: fadeInUp 0.6s ease-out;
}

html {
    scroll-behavior: smooth;
}