:root {
    --primary: #25D366;
    --primary-hover: #1EBE5A;
    --dark-blue: #0F172A;
    --text-main: #334155;
    --text-light: #64748B;
    --bg-light: #F8FAFC;
    --white: #FFFFFF;
    --radius: 8px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    color: var(--text-main);
    line-height: 1.6;
    background-color: var(--white);
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

h1, h2, h3 {
    color: var(--dark-blue);
    line-height: 1.2;
}

h1 { font-size: 2.2rem; font-weight: 800; margin-bottom: 1rem; }
h2 { font-size: 1.8rem; font-weight: 700; margin-bottom: 1rem; }
h3 { font-size: 1.2rem; font-weight: 600; margin-bottom: 0.5rem; }

p { margin-bottom: 1rem; color: var(--text-light); }

.text-center { text-align: center; }
.text-white, .text-white h2, .text-white p { color: var(--white); }
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.small-text { font-size: 0.875rem; color: var(--text-light); }

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.8rem 1.5rem;
    font-weight: 600;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background-color: var(--primary);
    color: var(--white);
    border: none;
    box-shadow: 0 4px 6px rgba(37, 211, 102, 0.2);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(37, 211, 102, 0.3);
}

.btn-outline {
    background-color: transparent;
    color: var(--dark-blue);
    border: 2px solid var(--dark-blue);
}

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.navbar {
    padding: 1rem 0;
    background: var(--white);
    border-bottom: 1px solid #e2e8f0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

section {
    padding: 3.5rem 0;
}

.bg-light {
    background-color: var(--bg-light);
}

.grid-2, .grid-3 {
    display: grid;
    gap: 2rem;
}

.align-center {
    align-items: center;
}

.hero {
    padding: 3rem 0 2rem;
    background: linear-gradient(180deg, #F8FAFC 0%, #FFFFFF 100%);
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 1.5rem;
}

.card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    border: 1px solid #e2e8f0;
}

.icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 1rem;
}

.feature-list {
    list-style: none;
    margin-top: 1.5rem;
}

.feature-list li {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    position: relative;
}

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

.step-number {
    width: 40px;
    height: 40px;
    background: var(--dark-blue);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: bold;
    margin: 0 auto 1rem;
}

.cta-final {
    background-color: var(--dark-blue);
    padding: 4.5rem 0;
}

.footer {
    background-color: #020617;
    color: var(--text-light);
    padding: 2.5rem 0;
}

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

@media (min-width: 768px) {
    h1 { font-size: 3.2rem; }
    h2 { font-size: 2.3rem; }
    section { padding: 5.5rem 0; }
    .grid-2 { grid-template-columns: 1fr 1fr; }
    .grid-3 { grid-template-columns: repeat(3, 1fr); }
    .hero-container {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 3rem;
        align-items: center;
    }
}