:root {
    --bg: #ffffff;
    --text: #111111;
    --text-muted: #666666;
    --accent: #0066ff;
    --border: #e5e5e5;
    --bg-alt: #fafafa;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'DM Sans', sans-serif;
    background: var(--bg);
    color: var(--text);
    margin: 0;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* — NAV — */
nav {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.8rem 5%;
    background: #fff;
    border-bottom: 1px solid var(--border);
}

.logo {
    font-family: 'Inter', 'DM Sans', sans-serif;
    font-size: 1.4rem;
    font-weight: 700;
    text-decoration: none;
    color: var(--text);
}

.logo span {
    color: var(--accent);
}

/* — HERO — */
.hero {
    padding: 2rem 5% 6rem;
    max-width: 900px;
}

@media (min-width: 1024px) {
    .hero {
        max-width: 1100px;
    }
}

h1 {
    font-family: 'Inter', 'DM Sans', sans-serif;
    font-size: clamp(3rem, 10vw, 5rem);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-block: 1.5rem;
}

@media (min-width: 1024px) {
    h1 {
        font-size: 5.5rem;
    }
}

h1 em {
    font-style: italic;
    color: var(--accent);
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 600px;
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

@media (min-width: 1024px) {
    .subtitle {
        font-size: 1.5rem;
        max-width: 700px;
    }
}

.hero-cta {
    display: flex;
    gap: 1rem;
}

.btn-primary {
    display: inline-block;
    background: var(--accent);
    color: #fff;
    padding: 1rem 2rem;
    font-weight: 600;
    text-decoration: none;
    transition: opacity 0.2s;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    opacity: 0.9;
}

.btn-ghost {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
    padding: 1rem 2rem;
    font-weight: 600;
    text-decoration: none;
    transition: background 0.2s;
}

.btn-ghost:hover {
    background: var(--bg-alt);
}

/* — PROCESS — */
.steps {
    padding: 6rem 5%;
    border-top: 1px solid var(--border);
}

.steps-header h2 {
    font-family: 'Inter', 'DM Sans', sans-serif;
    font-size: 2.5rem;
    margin-bottom: 4rem;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2px;
    background: var(--border);
    border: 1px solid var(--border);
}

.step {
    padding: 4rem 3rem;
    background: #fff;
}

.step-num {
    font-size: 0.8rem;
    color: var(--accent);
    font-weight: 700;
    margin-bottom: 1.5rem;
    display: block;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.step h3 {
    font-family: 'Inter', 'DM Sans', sans-serif;
    font-size: 1.75rem;
    margin-bottom: 1rem;
}

.step p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

/* — CALCULATOR TEASER — */
.calc-preview {
    margin-top: 1.5rem;
    background: var(--bg-alt);
    padding: 1rem;
    border: 1px solid var(--border);
    font-family: monospace;
    font-size: 0.9rem;
}

.calc-row {
    display: flex;
    justify-content: space-between;
}

/* — FOOTER — */
.footer-cta {
    padding: 6rem 5%;
    text-align: center;
    background: var(--bg-alt);
    border-top: 1px solid var(--border);
}

.footer-cta h2 {
    font-family: 'Inter', 'DM Sans', sans-serif;
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

.footer-cta p {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 3rem;
    line-height: 1.6;
}

.footer-cta .btn-primary {
    font-size: 1.2rem;
    padding: 1.5rem 3rem;
}

/* — FOOTER — */
footer {
    padding: 4rem 5%;
    border-top: 1px solid var(--border);
    text-align: center;
    color: var(--text-muted);
    background: #fff;
}

.footer-nav {
    margin-top: 1.5rem;
    display: flex;
    justify-content: center;
    gap: 2rem;
}

.footer-nav a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}

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

/* — RESPONSIVE — */
@media (max-width: 768px) {
    .steps-grid {
        grid-template-columns: 1fr;
    }

    .hero {
        padding-top: 4rem;
    }
}