:root {
    --blue-50: #eff6ff;
    --blue-600: #2563eb;
    --blue-700: #1d4ed8;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-900: #111827;
    --green-500: #22c55e;
    --green-600: #16a34a;
    --radius: 1rem;
    --radius-lg: 1.5rem;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 8px 24px rgba(17, 24, 39, 0.06);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    color: var(--gray-900);
    background: #ffffff;
    line-height: 1.5;
}

.container {
    max-width: 72rem;
    margin: 0 auto;
    padding: 0 1.5rem;
}

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

/* Nav */
.nav {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--gray-200);
}

.nav-inner {
    height: 4rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    color: var(--gray-900);
    text-decoration: none;
    white-space: nowrap;
}

.brand-icon {
    height: 28px;
    width: auto;
}

.nav-links {
    display: none;
    align-items: center;
    gap: 2rem;
    flex: 1;
    justify-content: center;
}

.nav-links a {
    color: var(--gray-600);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
}

.nav-links a:hover {
    color: var(--gray-900);
}

@media (min-width: 768px) {
    .nav-links {
        display: flex;
    }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    text-decoration: none;
    border-radius: 0.75rem;
    transition: background-color 0.15s ease, transform 0.1s ease;
    white-space: nowrap;
}

.btn:active {
    transform: translateY(1px);
}

.btn-primary {
    background: var(--blue-600);
    color: #ffffff;
}

.btn-primary:hover {
    background: var(--blue-700);
}

.btn-ghost {
    background: transparent;
    color: var(--gray-900);
    border: 1px solid var(--gray-200);
}

.btn-ghost:hover {
    background: var(--gray-50);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
}

/* Hero */
.hero {
    background: linear-gradient(180deg, var(--blue-50) 0%, #ffffff 65%);
    padding: 5rem 0 4rem;
}

.hero-inner {
    max-width: 46rem;
    text-align: center;
}

.hero h1 {
    font-size: 2.25rem;
    line-height: 1.2;
    margin: 0 0 1.25rem;
    letter-spacing: -0.02em;
}

@media (min-width: 640px) {
    .hero h1 {
        font-size: 2.75rem;
    }
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--gray-600);
    margin: 0 0 2rem;
}

.hero-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    align-items: center;
}

@media (min-width: 480px) {
    .hero-actions {
        flex-direction: row;
        justify-content: center;
    }
}

/* Section titles */
.section-title {
    text-align: center;
    font-size: 1.75rem;
    margin: 0 0 0.5rem;
    letter-spacing: -0.01em;
}

.section-subtitle {
    text-align: center;
    color: var(--gray-500);
    margin: 0 0 3rem;
}

/* Steps */
.steps {
    padding: 5rem 0;
}

.steps-grid {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .steps-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.step-card {
    position: relative;
    background: #ffffff;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 1.75rem 1.5rem;
    box-shadow: var(--shadow);
}

.step-number {
    position: absolute;
    top: 1rem;
    right: 1.25rem;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--blue-600);
    background: var(--blue-50);
    width: 1.5rem;
    height: 1.5rem;
    border-radius: 999px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-icon {
    width: 2.75rem;
    height: 2.75rem;
    border-radius: 0.75rem;
    background: var(--blue-50);
    color: var(--blue-600);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.step-icon svg {
    width: 1.5rem;
    height: 1.5rem;
}

.step-card h3 {
    margin: 0 0 0.4rem;
    font-size: 1.05rem;
}

.step-card p {
    margin: 0;
    color: var(--gray-600);
    font-size: 0.9rem;
}

/* Compare (economia de tempo) */
.compare {
    padding: 4rem 0 5rem;
    background: var(--gray-50);
}

.compare-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    max-width: 44rem;
}

@media (min-width: 640px) {
    .compare-inner {
        flex-direction: row;
        justify-content: center;
    }
}

.compare-card {
    background: #ffffff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    padding: 2rem;
    text-align: center;
    flex: 1;
    box-shadow: var(--shadow);
}

.compare-after {
    border-color: var(--blue-600);
    box-shadow: 0 0 0 3px var(--blue-50), var(--shadow);
}

.compare-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray-500);
    margin-bottom: 0.75rem;
}

.compare-big {
    font-size: 2.5rem;
    font-weight: 800;
    margin: 0 0 0.5rem;
    color: var(--gray-900);
}

.compare-after .compare-big {
    color: var(--blue-600);
}

.compare-card p:last-child {
    margin: 0;
    color: var(--gray-600);
    font-size: 0.9rem;
}

.compare-arrow {
    font-size: 1.75rem;
    color: var(--gray-500);
    transform: rotate(90deg);
}

@media (min-width: 640px) {
    .compare-arrow {
        transform: none;
    }
}

/* CTA final */
.cta {
    padding: 5rem 0;
    text-align: center;
}

.cta-inner h2 {
    font-size: 1.875rem;
    margin: 0 0 0.75rem;
}

.cta-inner p {
    color: var(--gray-600);
    margin: 0 0 2rem;
}

/* Footer */
.footer {
    border-top: 1px solid var(--gray-200);
    padding: 2rem 0;
}

.footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    text-align: center;
    color: var(--gray-500);
    font-size: 0.875rem;
}

@media (min-width: 640px) {
    .footer-inner {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

.footer-whatsapp {
    color: var(--green-600);
    text-decoration: none;
    font-weight: 600;
}

.footer-whatsapp:hover {
    color: var(--green-500);
}