html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--background);
    color: var(--text);
    font-size: 16px;
    line-height: 1.6;
}

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 60px 0;
}

.section-title {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    margin-bottom: 16px;
    text-align: center;
}

.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 40px;
}

.section-header h1 {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    margin-bottom: 12px;
}

.lead {
    font-size: 1.125rem;
    color: var(--muted);
    margin-bottom: 16px;
}

.section-footer {
    text-align: center;
    margin-top: 32px;
}

.text-muted {
    color: var(--muted);
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 1rem;
    transition: all var(--transition);
    text-align: center;
    line-height: 1.2;
    min-height: 48px;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    border: 2px solid var(--primary);
}

.btn-primary:hover,
.btn-primary:focus-visible {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    color: #fff;
}

.btn-secondary {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
    background: var(--primary-light);
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.125rem;
    min-height: 56px;
}

.skip-link {
    position: absolute;
    top: -100px;
    left: 16px;
    z-index: 10000;
    background: var(--primary);
    color: #fff;
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    transition: top 0.2s;
}

.skip-link:focus {
    top: 16px;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.feature-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
}

.feature-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.feature-card svg {
    margin: 0 auto 16px;
}

.feature-card h3 {
    font-size: 1.125rem;
    margin-bottom: 8px;
}

.feature-card p {
    color: var(--muted);
    font-size: 0.9375rem;
}

.quick-calc-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.faq-preview {
    max-width: 720px;
    margin: 0 auto;
}