:root {
    --bg: #f6f7f9;
    --surface: #ffffff;
    --border: #e2e5ea;
    --text: #1f2430;
    --text-muted: #6b7280;
    --accent: #25d366;
    --accent-hover: #1da851;
    --radius: 14px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

a { color: var(--accent-hover); }

.wrap {
    max-width: 880px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Hero */
.hero {
    text-align: center;
    padding: 4rem 0 3rem;
}

.avatar {
    width: 148px;
    height: 148px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--surface);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.12);
    margin-bottom: 1.5rem;
}

.hero h1 {
    font-size: 2.1rem;
    margin: 0 0 0.5rem;
}

.hero p.tagline {
    font-size: 1.15rem;
    color: var(--text-muted);
    max-width: 34rem;
    margin: 0 auto 2rem;
}

.btn-whatsapp {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--accent);
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.05rem;
    padding: 0.85rem 1.75rem;
    border-radius: 999px;
    box-shadow: 0 6px 18px rgba(37, 211, 102, 0.35);
    transition: background 0.15s ease;
}

.btn-whatsapp:hover { background: var(--accent-hover); }

/* Features */
.features {
    padding: 1rem 0 3rem;
}

.features h2 {
    text-align: center;
    font-size: 1.5rem;
    margin-bottom: 2rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    gap: 1.25rem;
}

.feature-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem 1.25rem;
    text-align: center;
}

.feature-card .icon {
    font-size: 1.8rem;
    margin-bottom: 0.6rem;
}

.feature-card h3 {
    font-size: 1rem;
    margin: 0 0 0.4rem;
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin: 0;
}

/* How it works */
.how {
    padding: 1rem 0 3.5rem;
}

.how h2 {
    text-align: center;
    font-size: 1.5rem;
    margin-bottom: 2rem;
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    counter-reset: step;
}

.step {
    text-align: center;
}

.step .step-number {
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    margin: 0 auto 0.75rem;
}

.step h3 {
    font-size: 0.95rem;
    margin: 0 0 0.35rem;
}

.step p {
    font-size: 0.88rem;
    color: var(--text-muted);
    margin: 0;
}

/* Footer */
footer {
    border-top: 1px solid var(--border);
    padding: 2rem 0;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

footer a { color: inherit; text-decoration: underline; }

footer .footer-links {
    margin-top: 0.5rem;
}

footer .footer-links a {
    margin: 0 0.5rem;
}