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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: #fafafa;
    color: #2a2a2a;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

/* ASCII art background */
.ascii-bg {
    position: fixed;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    z-index: 0;
    font-family: "Courier New", Courier, monospace;
    font-size: 5px;
    line-height: 1.1;
    color: rgba(0, 0, 0, 0.55);
    pointer-events: none;
    white-space: pre;
    user-select: none;
}

/* Nav */
header {
    border-bottom: 1px solid #e0e0e0;
    position: relative;
    z-index: 1;
    background: rgba(250, 250, 250, 0.92);
    backdrop-filter: blur(4px);
}

nav {
    max-width: 720px;
    margin: 0 auto;
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 1.1rem;
    font-weight: 600;
    color: #2a2a2a;
    text-decoration: none;
    letter-spacing: -0.02em;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.4rem;
    cursor: pointer;
    color: #2a2a2a;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: #555;
    font-size: 0.95rem;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: #000;
}

/* Main */
main {
    flex: 1;
    max-width: 720px;
    margin: 0 auto;
    padding: 0 1.5rem;
    width: 100%;
    position: relative;
    z-index: 1;
}

.hero {
    padding: 6rem 0 3rem;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: #111;
}

.tagline {
    margin-top: 0.75rem;
    font-size: 1.15rem;
    color: #666;
}

.intro {
    padding-bottom: 4rem;
}

.intro p {
    font-size: 1.05rem;
    color: #444;
    max-width: 540px;
}


/* Mobile */
@media (max-width: 600px) {
    .nav-toggle {
        display: block;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        gap: 1rem;
        position: absolute;
        top: 3.5rem;
        right: 1.5rem;
        background: #fafafa;
        border: 1px solid #e0e0e0;
        border-radius: 6px;
        padding: 1rem 1.5rem;
        z-index: 10;
    }

    .nav-links.open {
        display: flex;
    }

    nav {
        position: relative;
    }

    .hero {
        padding: 4rem 0 2rem;
    }

    .hero h1 {
        font-size: 2.2rem;
    }
}