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

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: #0f172a;
    background: #f8fafc;
    line-height: 1.6;
}

.container {
    width: min(960px, calc(100% - 32px));
    margin: 0 auto;
}

.site-header {
    background: #0f172a;
    color: #f8fafc;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 64px;
}

.logo {
    color: #f8fafc;
    text-decoration: none;
    font-weight: 700;
    letter-spacing: 0.12em;
    font-size: 1.1rem;
}

.nav-actions {
    display: flex;
    gap: 12px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 18px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
}

.btn-ghost {
    color: #e2e8f0;
    border: 1px solid rgba(226, 232, 240, 0.35);
}

.btn-primary {
    background: linear-gradient(135deg, #6366f1, #4cc9ff);
    color: #fff;
}

.hero {
    padding: 72px 0 48px;
    background: linear-gradient(180deg, #ffffff 0%, #eef2ff 100%);
}

.hero-inner {
    max-width: 720px;
}

.eyebrow {
    margin: 0 0 8px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.8rem;
    color: #64748b;
}

.hero h1 {
    margin: 0 0 16px;
    font-size: clamp(2rem, 5vw, 3rem);
    line-height: 1.15;
}

.lead {
    margin: 0;
    font-size: 1.125rem;
    color: #475569;
}

.about {
    padding: 48px 0 72px;
}

.about h2 {
    margin-top: 0;
}

.site-footer {
    padding: 24px 0 40px;
    color: #64748b;
    font-size: 0.9rem;
}

@media (max-width: 640px) {
    .header-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
        padding: 16px 0;
    }
}