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

:root {
    --black: #111111;
    --white: #ffffff;
    --off-white: #fafaf9;
    --gray-400: #9ca3af;
    --gray-600: #4b5563;
    --border: #e5e7eb;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--white);
    color: var(--black);
    line-height: 1.6;
    font-size: 16px;
}

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

/* Header */
header {
    padding: 24px 0;
    border-bottom: 1px solid var(--border);
}

.logo {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

/* Hero */
.hero {
    padding: 80px 0 64px;
}

.hero h1 {
    font-size: clamp(48px, 7vw, 80px);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin-bottom: 28px;
    max-width: 700px;
}

.subhead {
    font-size: 18px;
    color: var(--gray-600);
    max-width: 520px;
    margin-bottom: 40px;
    line-height: 1.7;
}

.btn {
    display: inline-block;
    background: var(--black);
    color: var(--white);
    padding: 14px 28px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.02em;
    border: none;
    cursor: pointer;
    transition: opacity 0.15s;
    font-family: inherit;
}

.btn:hover {
    opacity: 0.7;
}

/* Services */
.services {
    padding: 56px 0;
    background: var(--off-white);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 48px;
}

.service-card h3 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}

.service-card p {
    font-size: 15px;
    color: var(--gray-600);
    line-height: 1.75;
}

/* Contact */
.contact {
    padding: 72px 0;
}

.contact h2 {
    font-size: 40px;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
}

.section-sub {
    color: var(--gray-600);
    margin-bottom: 32px;
    font-size: 16px;
}

form {
    max-width: 580px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 6px;
    letter-spacing: 0.01em;
}

input,
textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    font-family: inherit;
    font-size: 15px;
    color: var(--black);
    background: var(--white);
    outline: none;
    border-radius: 0;
    transition: border-color 0.15s;
    -webkit-appearance: none;
}

input:focus,
textarea:focus {
    border-color: var(--black);
}

textarea {
    resize: vertical;
}

/* Footer */
footer {
    padding: 32px 0;
    border-top: 1px solid var(--border);
}

footer p {
    font-size: 13px;
    color: var(--gray-400);
}

/* Responsive */
@media (max-width: 640px) {
    .hero {
        padding: 72px 0 60px;
    }

    .services-grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }
}