:root {
    --primary: #14336A;
    --primary-dark: #0f2752;
    --accent: #244c97;
    --text: #1d2430;
    --muted: #667085;
    --bg: #ffffff;
    --bg-soft: #f5f7fb;
    --border: #e3e8f2;
    --radius: 18px;
    --shadow: 0 12px 40px rgba(20, 51, 106, 0.08);
    --max-width: 1180px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.7;
}

img {
    max-width: 100%;
    display: block;
}

a {
    text-decoration: none;
}

.container {
    width: min(92%, var(--max-width));
    margin: 0 auto;
}

.narrow {
    max-width: 820px;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: 76px;
}

.logo {
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 0.3px;
}

nav {
    display: flex;
    gap: 2rem;
}

nav a {
    color: var(--muted);
    font-weight: 500;
}

.hero {
    padding: 7rem 0 5rem;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.5fr 0.9fr;
    gap: 5rem;
    align-items: center;
}

.eyebrow {
    color: var(--accent);
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-size: 0.8rem;
}

.hero h1 {
    font-size: clamp(2.7rem, 5vw, 4.8rem);
    line-height: 1.05;
    margin: 1rem 0 1.5rem;
    color: var(--primary);
}

.hero-intro {
    font-size: 1.2rem;
    color: var(--muted);
    max-width: 720px;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.hero-image img {
    border-radius: 24px;
    box-shadow: var(--shadow);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.95rem 1.4rem;
    border-radius: 999px;
    font-weight: 600;
    transition: 0.2s ease;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-secondary {
    border: 1px solid var(--border);
    color: var(--primary);
}

.section {
    padding: 6rem 0;
}

.section-alt {
    background: var(--bg-soft);
}

.section-heading {
    margin-bottom: 3rem;
}

.section-heading h2,
.section h2 {
    font-size: 2.2rem;
    color: var(--primary);
    margin-bottom: 0.75rem;
}

.lead {
    font-size: 1.3rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.card {
    background: white;
    padding: 2rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.card h3 {
    color: var(--primary);
    margin-bottom: 0.75rem;
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

.expertise-item {
    background: var(--bg-soft);
    border: 1px solid var(--border);
    padding: 1rem;
    border-radius: 12px;
    font-weight: 600;
    text-align: center;
}

.timeline {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.timeline-item {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: 2rem;
}

.timeline-date {
    font-weight: 700;
    color: var(--accent);
}

.timeline-content {
    background: white;
    border-radius: var(--radius);
    padding: 2rem;
    border: 1px solid var(--border);
}

.timeline-content h3 {
    color: var(--primary);
}

.timeline-content h4 {
    color: var(--muted);
    margin-bottom: 1rem;
    font-weight: 500;
}

.education-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.education-card {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
}

.education-card ul {
    padding-left: 1.25rem;
    margin-top: 1rem;
}

.cv-section,
.contact-section {
    text-align: center;
}

.contact-card {
    margin-top: 2rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    background: var(--bg-soft);
}

.contact-card p + p {
    margin-top: 1.5rem;
}

.contact-card a {
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
}

.contact-card a:hover {
    text-decoration: underline;
}

.footer {
    padding: 2rem 0;
    border-top: 1px solid var(--border);
    text-align: center;
    color: var(--muted);
}

@media (max-width: 960px) {

    .hero-grid,
    .cards,
    .education-grid,
    .expertise-grid {
        grid-template-columns: 1fr;
    }

    .timeline-item {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    nav {
        display: none;
    }

    .hero {
        padding-top: 4rem;
    }

    .hero-image {
        order: -1;
    }
}