:root {
    --ink: #0f0f0d;
    --ink-muted: #5a5a52;
    --ink-faint: #9a9a8e;
    --paper: #f5f3ee;
    --paper-warm: #ede9e0;
    --paper-card: #ffffff;
    --accent: #1a3a2a;
    --accent-bright: #2d6a4a;
    --accent-light: #e8f0eb;
    --border: #d8d4c8;
    --tag-bg: #e8f0eb;
    --tag-color: #1a3a2a;
    --serif: 'DM Serif Display', Georgia, serif;
    --sans: 'Instrument Sans', system-ui, sans-serif;
    --mono: 'DM Mono', monospace;
  }

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

  html { scroll-behavior: smooth; }

  body {
    font-family: var(--sans);
    background: var(--paper);
    color: var(--ink);
    line-height: 1.6;
    overflow-x: hidden;
  }

  /* NAV */
  nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 3rem;
    background: rgba(245, 243, 238, 0.88);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
  }

  .nav-logo {
    font-family: var(--serif);
    font-size: 1.15rem;
    color: var(--ink);
    letter-spacing: -0.01em;
  }

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

  .nav-links a {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--ink-muted);
    text-decoration: none;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    transition: color 0.2s;
  }

  .nav-links a:hover { color: var(--accent-bright); }

  .nav-cta {
    background: var(--accent) !important;
    color: #fff !important;
    padding: 0.4rem 1rem;
    border-radius: 4px;
    transition: background 0.2s !important;
  }
  .nav-cta:hover { background: var(--accent-bright) !important; color: #fff !important; }

  /* HERO */
  .hero {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    padding-top: 70px;
  }

  .hero-left {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 5rem 4rem 5rem 5rem;
    position: relative;
  }

  .hero-eyebrow {
    font-family: var(--mono);
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    color: var(--accent-bright);
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
  }

  .hero-eyebrow::before {
    content: '';
    display: block;
    width: 32px;
    height: 1px;
    background: var(--accent-bright);
  }

  .hero-name {
    font-family: var(--serif);
    font-size: clamp(2.8rem, 5vw, 4.5rem);
    line-height: 1.05;
    letter-spacing: -0.02em;
    color: var(--ink);
    margin-bottom: 0.5rem;
  }

  .hero-name em {
    font-style: italic;
    color: var(--accent-bright);
  }

  .hero-title {
    font-family: var(--mono);
    font-size: 0.9rem;
    color: var(--ink-muted);
    margin-bottom: 2rem;
    letter-spacing: 0.02em;
  }

  .hero-bio {
    font-size: 1.05rem;
    color: var(--ink-muted);
    max-width: 480px;
    line-height: 1.75;
    margin-bottom: 2.5rem;
  }

  .hero-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
  }

  .btn-primary {
    background: var(--accent);
    color: #fff;
    padding: 0.75rem 1.75rem;
    border-radius: 4px;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    transition: background 0.2s, transform 0.15s;
  }
  .btn-primary:hover { background: var(--accent-bright); transform: translateY(-1px); }

  .btn-ghost {
    color: var(--ink);
    padding: 0.75rem 1.5rem;
    border: 1px solid var(--border);
    border-radius: 4px;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: border-color 0.2s, background 0.2s;
  }
  .btn-ghost:hover { border-color: var(--accent-bright); background: var(--accent-light); }

  .hero-right {
    background: var(--accent);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 5rem 4rem;
    position: relative;
    overflow: hidden;
  }

  .hero-right::before {
    content: '';
    position: absolute;
    top: -100px; right: -100px;
    width: 400px; height: 400px;
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 50%;
  }

  .hero-right::after {
    content: '';
    position: absolute;
    bottom: -80px; left: -80px;
    width: 300px; height: 300px;
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 50%;
  }

  .hero-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    width: 100%;
    max-width: 340px;
    margin-bottom: 2.5rem;
    position: relative;
    z-index: 1;
  }

  .stat-card {
    background: rgba(255,255,255,0.07);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 8px;
    padding: 1.25rem;
  }

  .stat-number {
    font-family: var(--serif);
    font-size: 2.2rem;
    color: #fff;
    line-height: 1;
    margin-bottom: 0.3rem;
  }

  .stat-label {
    font-size: 0.75rem;
    color: rgba(255,255,255,0.55);
    font-weight: 500;
    letter-spacing: 0.04em;
    text-transform: uppercase;
  }

  .hero-contact-links {
    display: flex;
    gap: 1rem;
    position: relative;
    z-index: 1;
  }

  .hero-contact-links a {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    font-size: 0.8rem;
    font-family: var(--mono);
    transition: color 0.2s;
  }
  .hero-contact-links a:hover { color: #fff; }

  /* SECTION COMMON */
  section {
    padding: 6rem 5rem;
  }

  .section-eyebrow {
    font-family: var(--mono);
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    color: var(--accent-bright);
    text-transform: uppercase;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
  }
  .section-eyebrow::before {
    content: '';
    display: block;
    width: 24px; height: 1px;
    background: var(--accent-bright);
  }

  .section-title {
    font-family: var(--serif);
    font-size: clamp(2rem, 3.5vw, 3rem);
    letter-spacing: -0.02em;
    line-height: 1.1;
    margin-bottom: 3rem;
  }

  /* SKILLS */
  .skills-section {
    background: var(--paper-warm);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
  }

  .skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
  }

  .skill-group {
    background: var(--paper-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.5rem;
  }

  .skill-group-title {
    font-family: var(--mono);
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent-bright);
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
  }

  .skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
  }

  .skill-tag {
    background: var(--tag-bg);
    color: var(--tag-color);
    font-size: 0.78rem;
    font-weight: 500;
    padding: 0.25rem 0.65rem;
    border-radius: 3px;
    font-family: var(--mono);
  }

  /* PROJECTS */
  .projects-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  .project-card {
    background: var(--paper-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 2rem;
    position: relative;
    transition: border-color 0.2s, transform 0.2s;
    overflow: hidden;
  }

  .project-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--accent);
  }

  .project-card:hover {
    border-color: var(--accent-bright);
    transform: translateY(-2px);
  }

  .project-num {
    font-family: var(--mono);
    font-size: 0.7rem;
    color: var(--ink-faint);
    letter-spacing: 0.08em;
    margin-bottom: 1rem;
  }

  .project-title {
    font-family: var(--serif);
    font-size: 1.4rem;
    margin-bottom: 0.75rem;
    line-height: 1.2;
  }

  .project-desc {
    font-size: 0.9rem;
    color: var(--ink-muted);
    line-height: 1.7;
    margin-bottom: 1.25rem;
  }

  .project-highlights {
    list-style: none;
    margin-bottom: 1.5rem;
  }

  .project-highlights li {
    font-size: 0.85rem;
    color: var(--ink-muted);
    padding: 0.3rem 0;
    padding-left: 1.1rem;
    position: relative;
    line-height: 1.5;
  }

  .project-highlights li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent-bright);
    font-size: 0.8rem;
  }

  .project-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
  }

  .stack-tag {
    font-family: var(--mono);
    font-size: 0.72rem;
    color: var(--ink-muted);
    background: var(--paper-warm);
    border: 1px solid var(--border);
    padding: 0.2rem 0.55rem;
    border-radius: 3px;
  }

  /* EXPERIENCE */
  .experience-section {
    background: var(--paper-warm);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
  }

  .exp-timeline {
    position: relative;
    padding-left: 2.5rem;
  }

  .exp-timeline::before {
    content: '';
    position: absolute;
    left: 7px; top: 8px; bottom: 8px;
    width: 1px;
    background: var(--border);
  }

  .exp-item {
    position: relative;
    margin-bottom: 2.5rem;
  }

  .exp-item::before {
    content: '';
    position: absolute;
    left: -2.5rem;
    top: 8px;
    width: 10px; height: 10px;
    border-radius: 50%;
    background: var(--paper-card);
    border: 2px solid var(--accent-bright);
  }

  .exp-item:first-child::before {
    background: var(--accent-bright);
  }

  .exp-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .exp-role {
    font-family: var(--serif);
    font-size: 1.2rem;
    line-height: 1.2;
  }

  .exp-date {
    font-family: var(--mono);
    font-size: 0.72rem;
    color: var(--ink-faint);
    letter-spacing: 0.06em;
    white-space: nowrap;
    background: var(--paper-warm);
    padding: 0.2rem 0.6rem;
    border-radius: 3px;
    border: 1px solid var(--border);
  }

  .exp-company {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--accent-bright);
    margin-bottom: 0.75rem;
  }

  .exp-points {
    list-style: none;
  }

  .exp-points li {
    font-size: 0.9rem;
    color: var(--ink-muted);
    padding: 0.25rem 0;
    padding-left: 1.1rem;
    position: relative;
    line-height: 1.6;
  }

  .exp-points li::before {
    content: '·';
    position: absolute;
    left: 0;
    color: var(--accent-bright);
    font-size: 1.2rem;
    line-height: 1.2;
  }

  /* EDUCATION & CERTS */
  .edu-cert-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
  }

  .edu-item {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border);
  }

  .edu-item:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }

  .edu-degree {
    font-family: var(--serif);
    font-size: 1.1rem;
    margin-bottom: 0.3rem;
    line-height: 1.3;
  }

  .edu-school {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--accent-bright);
    margin-bottom: 0.2rem;
  }

  .edu-meta {
    font-family: var(--mono);
    font-size: 0.72rem;
    color: var(--ink-faint);
    letter-spacing: 0.04em;
  }

  .cert-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.9rem 1rem;
    background: var(--paper-card);
    border: 1px solid var(--border);
    border-radius: 6px;
    margin-bottom: 0.75rem;
    transition: border-color 0.2s;
  }

  .cert-item:hover { border-color: var(--accent-bright); }

  .cert-icon {
    width: 32px; height: 32px;
    background: var(--accent-light);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent);
    font-family: var(--mono);
  }

  .cert-name {
    font-size: 0.88rem;
    font-weight: 500;
    margin-bottom: 0.15rem;
  }

  .cert-issuer {
    font-size: 0.78rem;
    color: var(--ink-faint);
    font-family: var(--mono);
  }

  /* CONTACT */
  .contact-section {
    background: var(--accent);
    color: #fff;
  }

  .contact-section .section-eyebrow {
    color: rgba(255,255,255,0.5);
  }
  .contact-section .section-eyebrow::before {
    background: rgba(255,255,255,0.3);
  }

  .contact-section .section-title {
    color: #fff;
  }

  .contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
  }

  .contact-info p {
    font-size: 1.05rem;
    color: rgba(255,255,255,0.65);
    line-height: 1.75;
    margin-bottom: 2rem;
  }

  .contact-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
  }

  .contact-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
  }

  .contact-link:hover { color: #fff; }

  .contact-link-icon {
    width: 36px; height: 36px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-family: var(--mono);
    color: rgba(255,255,255,0.6);
    flex-shrink: 0;
  }

  .open-to-work {
    background: rgba(255,255,255,0.07);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 8px;
    padding: 2rem;
  }

  .otw-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(80,200,120,0.15);
    border: 1px solid rgba(80,200,120,0.3);
    padding: 0.35rem 0.85rem;
    border-radius: 100px;
    font-size: 0.78rem;
    font-weight: 500;
    color: #7ede9a;
    margin-bottom: 1.25rem;
    letter-spacing: 0.04em;
  }

  .otw-badge::before {
    content: '';
    display: block;
    width: 7px; height: 7px;
    border-radius: 50%;
    background: #7ede9a;
    animation: pulse 2s infinite;
  }

  @keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
  }

  .otw-title {
    font-family: var(--serif);
    font-size: 1.3rem;
    color: #fff;
    margin-bottom: 0.5rem;
  }

  .otw-body {
    font-size: 0.88rem;
    color: rgba(255,255,255,0.55);
    line-height: 1.7;
    margin-bottom: 1.25rem;
  }

  .otw-roles {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
  }

  .otw-role {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.12);
    padding: 0.25rem 0.7rem;
    border-radius: 3px;
    font-size: 0.78rem;
    font-family: var(--mono);
    color: rgba(255,255,255,0.7);
  }

  /* FOOTER */
  footer {
    background: #0c1f16;
    padding: 1.75rem 5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  .footer-name {
    font-family: var(--serif);
    font-size: 0.95rem;
    color: rgba(255,255,255,0.4);
  }

  .footer-domain {
    font-family: var(--mono);
    font-size: 0.78rem;
    color: rgba(255,255,255,0.25);
    letter-spacing: 0.05em;
  }

  /* RESPONSIVE */
  @media (max-width: 900px) {
    nav { padding: 1rem 1.5rem; }
    .nav-links { display: none; }
    .hero { grid-template-columns: 1fr; }
    .hero-left { padding: 4rem 1.5rem 2rem; }
    .hero-right { padding: 3rem 1.5rem; }
    section { padding: 4rem 1.5rem; }
    .projects-grid,
    .edu-cert-grid,
    .contact-grid { grid-template-columns: 1fr; gap: 2rem; }
    footer { padding: 1.5rem; flex-direction: column; gap: 0.5rem; text-align: center; }
  }

  /* ANIMATION */
  .fade-in {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }
  .fade-in.visible {
    opacity: 1;
    transform: translateY(0);
  }