:root {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: #1f2937;
    background: #fff;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 6rem; }
body { margin: 0; }
h1, h2, h3, p, ul { margin: 0; }
a { color: inherit; }
button { font: inherit; }
a, button { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible { outline: 3px solid #2563eb; outline-offset: 4px; }
.container { width: min(100% - 3rem, 64rem); margin-inline: auto; }
.site-nav { position: sticky; top: 0; z-index: 50; background: rgb(255 255 255 / 95%); border-bottom: 1px solid #e5e7eb; backdrop-filter: blur(12px); }
.nav-bar { display: flex; align-items: center; justify-content: space-between; min-height: 4.5rem; gap: 1rem; }
.brand { font-size: 1.25rem; font-weight: 700; color: #111827; text-decoration: none; }
.desktop-links, .mobile-links { list-style: none; padding: 0; }
.desktop-links { display: flex; gap: 2rem; }
.nav-link { display: inline-flex; align-items: center; min-height: 44px; font-weight: 500; text-decoration: none; color: #4b5563; }
.brand:hover, .nav-link:hover { color: #111827; }
.menu-toggle { display: none; align-items: center; justify-content: center; width: 44px; height: 44px; padding: .5rem; border: 0; border-radius: .5rem; background: transparent; color: #1f2937; cursor: pointer; }
.menu-toggle:hover { background: #f3f4f6; }
.menu-icon { width: 24px; height: 24px; }
.mobile-menu { border-top: 1px solid #f3f4f6; }
.mobile-menu[hidden] { display: none; }
.mobile-links { padding-block: .75rem; }
.mobile-links .nav-link { width: 100%; }
.hero { padding-block: clamp(3.5rem, 8vw, 6rem); background: #1f2937; color: #fff; text-align: center; }
.hero-content { max-width: 48rem; }
.hero-title { font-size: clamp(2rem, 5vw, 3rem); line-height: 1.2; font-weight: 700; text-wrap: balance; }
.hero-description { margin-top: 1rem; font-size: clamp(1.125rem, 2vw, 1.25rem); color: #d1d5db; }
.section { padding-block: clamp(3rem, 7vw, 5rem); }
.section-title { margin-bottom: 1.5rem; color: #111827; font-size: clamp(1.75rem, 4vw, 1.875rem); line-height: 1.3; }
.about-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: center; gap: 3rem; }
.about-description, .contact-description { font-size: 1.125rem; color: #4b5563; }
.portrait { display: flex; justify-content: center; }
.profile-photo { display: block; width: 100%; max-width: 24rem; height: auto; border-radius: 1rem; box-shadow: 0 10px 15px -3px rgb(0 0 0 / 10%); }
.experience { background: #f9fafb; }
.experience-title { text-align: center; margin-bottom: 3rem; }
.experience-list { display: grid; gap: 1.5rem; }
.experience-card { padding: clamp(1.25rem, 4vw, 2rem); background: #fff; border: 1px solid #e5e7eb; border-radius: .75rem; box-shadow: 0 1px 2px rgb(0 0 0 / 5%); }
.experience-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; }
.company { font-size: 1.25rem; font-weight: 600; color: #111827; line-height: 1.4; }
.dates { flex-shrink: 0; font-size: .875rem; color: #6b7280; }
.role { margin-bottom: .75rem; color: #374151; font-weight: 500; }
.job-description { margin-bottom: 1rem; color: #4b5563; }
.responsibilities { list-style: none; padding: 0; color: #4b5563; }
.responsibility { display: flex; gap: .75rem; }
.responsibility + .responsibility { margin-top: .5rem; }
.bullet { flex-shrink: 0; color: #9ca3af; }
strong { color: #1f2937; }
.contact-content { max-width: 42rem; text-align: center; }
.contact-description { margin-bottom: 2rem; }
.contact-button { display: inline-block; max-width: 100%; padding: .75rem 2rem; border-radius: .5rem; background: #1f2937; color: #fff; font-weight: 500; text-decoration: none; overflow-wrap: anywhere; }
.contact-button:hover { background: #374151; }
.site-footer { padding-block: 2rem; background: #111827; color: #9ca3af; }
.footer-content { text-align: center; }
@media (max-width: 47.99rem) {
    .desktop-links { display: none; }
    .menu-toggle { display: inline-flex; }
    .about-grid { grid-template-columns: minmax(0, 1fr); gap: 2rem; }
    .experience-heading { flex-direction: column; gap: .5rem; }
    .experience-title { margin-bottom: 2rem; }
}
@media (min-width: 48rem) { .mobile-menu { display: none; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }