:root {
    --primary: #007aff;
    --dark: #000000;
    --surface: #1c1c1e;
    --text-white: #ffffff;
    --text-gray: #a1a1a6;
    --bg-light: #f5f5f7;
    --text-dark: #1d1d1f;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", sans-serif; color: var(--text-dark); -webkit-font-smoothing: antialiased; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(0, 0, 0);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    max-width: 1100px;
    margin: 0 auto;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text-white); font-weight: 700; font-size: 1.2rem; line-height: 1; }
.brand img { width: 36px; height: 36px; border-radius: 8px; display: block; }

footer { padding: 80px 0; background: #fafafa; border-top: 1px solid #e5e5e5; font-size: 0.9rem; color: #86868b; }
.footer-grid { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 40px; }
.footer-col h4 { color: var(--dark); margin-bottom: 15px; }
.footer-col a { display: block; color: #86868b; text-decoration: none; margin-bottom: 8px; }
.footer-col .brand { display: flex; }
.footer-col a:hover { color: var(--primary); }