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

:root {
    --green-primary: #00AD80;
    --green-dark: #168253;
    --white: #FFFFFF;
    --gray-dark: #2D3748;
    --gray-light: #F8FAFC;
    --border-light: #E2E8F0;
    --shadow: 0 4px 12px rgba(0,0,0,0.08);
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background-color: var(--white);
    color: var(--gray-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ========== HEADER ========== */
header {
    text-align: center;
    padding: 60px 0 40px;
}

header h1 {
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--green-dark);
    margin-bottom: 16px;
}

header p {
    font-size: 1.25rem;
    color: #4A5568;
    max-width: 700px;
    margin: 0 auto;
}

/* ========== DEMO ========== */
.demo-section {
    display: flex;
    justify-content: center;
    margin: 40px 0 60px;
}

.demo-wrapper {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    max-width: 800px;
    width: 100%;
}

.demo-wrapper img {
    width: 100%;
    display: block;
    height: auto;
}

/* ========== FEATURES ========== */
.features {
    text-align: center;
    margin-bottom: 60px;
}

.features h2 {
    font-size: 2rem;
    margin-bottom: 32px;
    color: var(--green-dark);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.feature-card {
    padding: 24px;
    background: var(--gray-light);
    border-radius: 12px;
    border-top: 4px solid var(--green-primary);
}

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

/* ========== CTA ========== */
.cta-section {
    text-align: center;
    margin: 60px 0;
}

.cta-button {
    display: inline-block;
    background: var(--green-primary);
    color: white;
    font-size: 1.25rem;
    font-weight: 600;
    padding: 16px 48px;
    border-radius: 8px;
    text-decoration: none;
    box-shadow: var(--shadow);
    transition: all 0.2s ease;
}

.cta-button:hover {
    background: var(--green-dark);
    transform: translateY(-2px);
}

.cta-button.free {
    background: #E2E8F0;
    color: var(--green-dark);
    margin-right: 12px;
}
.cta-button.premium {
    background: var(--green-primary);
    color: white;
}

.price-note {
    margin-top: 16px;
    color: #4A5568;
    font-size: 0.95rem;
}

/* ========== COMPARISON TABLE ========== */
.comparison-table {
    width: 100%;
    max-width: 600px;
    margin: 2rem auto;
    border-collapse: collapse;
    font-size: 0.95rem;
}

.comparison-table th,
.comparison-table td {
    padding: 12px 16px;
    text-align: center;
    border-bottom: 1px solid var(--border-light);
}

.comparison-table th {
    background-color: var(--gray-light);
    color: var(--green-dark);
}

/* ========== FOOTER ========== */
footer {
    text-align: center;
    padding: 40px 0;
    color: #718096;
    font-size: 0.95rem;
    border-top: 1px solid var(--border-light);
}

footer a {
    color: var(--green-dark);
    text-decoration: none;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
    header h1 { font-size: 2.2rem; }
    header p { font-size: 1.1rem; }
    .demo-wrapper { border-radius: 8px; }
    .cta-button { padding: 14px 32px; font-size: 1.1rem; }
}