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

:root {
    --bg: #fdfdfd;
    --text: #1c1c1e;
    --muted: #6e6e73;
    --accent: #0066cc;
    --border: #e5e5ea;
    --surface: #ffffff;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

nav {
    border-bottom: 1px solid var(--border);
    background: var(--surface);
}

.nav-inner {
    max-width: 960px;
    margin: 0 auto;
    padding: 18px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-weight: 700;
    font-size: 18px;
    color: var(--text);
    text-decoration: none;
    letter-spacing: -0.3px;
}

.nav-links {
    display: flex;
    gap: 28px;
}

.nav-links a {
    color: var(--muted);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.15s;
}

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

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

.hero {
    padding: 90px 0 70px;
    border-bottom: 1px solid var(--border);
}

.hero h1 {
    font-size: 44px;
    font-weight: 700;
    letter-spacing: -1px;
    line-height: 1.15;
    margin-bottom: 20px;
    max-width: 720px;
}

.hero .lead {
    font-size: 19px;
    color: var(--muted);
    max-width: 600px;
    margin-bottom: 32px;
}

.cta {
    display: inline-block;
    color: var(--accent);
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    padding: 10px 0;
    transition: opacity 0.15s;
}

.cta:hover { opacity: 0.7; }

.features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    padding: 70px 0;
}

.feature h3 {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 10px;
}

.feature p {
    font-size: 15px;
    color: var(--muted);
}

footer {
    border-top: 1px solid var(--border);
    padding: 28px 24px;
    text-align: center;
    color: var(--muted);
    font-size: 13px;
    margin-top: 40px;
}

@media (max-width: 700px) {
    .hero h1 { font-size: 32px; }
    .hero { padding: 60px 0 50px; }
    .features {
        grid-template-columns: 1fr;
        gap: 30px;
        padding: 50px 0;
    }
}