:root {
    --bg: #0a0a0a;
    --fg: #f2f2f0;
    --muted: #7a7a76;
    --line: #232321;
    --mono: 'JetBrains Mono', 'Fira Code', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  }
 
  * { box-sizing: border-box; }
 
  body {
    margin: 0;
    background: var(--bg);
    font-family: var(--mono);
    color: var(--fg);
  }
 
  /* ---------- NAVBAR ---------- */
  .navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 22px 48px;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
  }
 
  .logo {
    display: flex;
    align-items: center;
    color: var(--fg);
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 3px;
    text-decoration: underline;
    text-underline-offset: 4px;
  }
 
  .logo::before {
    content: "$";
    color: var(--muted);
    margin-right: 2px;
    text-decoration: none;
  }
 
  .logo .cursor {
    display: inline-block;
    width: 8px;
    height: 15px;
    background: var(--fg);
    margin-left: 8px;
    animation: blink 1.1s steps(1) infinite;
    text-decoration: none;
  }
 
  @keyframes blink { 50% { opacity: 0; } }
 
  .nav-links {
    display: flex;
    align-items: center;
    gap: 40px;
    list-style: none;
    margin: 0;
    padding: 0;
  }
 
  .nav-links li a {
    color: var(--muted);
    text-decoration: none;
    font-size: 13px;
    letter-spacing: 1px;
    text-transform: uppercase;
    transition: color 0.2s ease;
  }
 
  .nav-links li a .num { color: var(--muted); margin-right: 6px; opacity: 0.6; }
  .nav-links li a:hover { color: var(--fg); }
  .nav-links li a:hover .num { color: var(--fg); opacity: 1; }
  .nav-links li a.active { color: var(--fg); }
 
  .cta {
    color: var(--bg);
    background: var(--fg);
    border: 1px solid var(--fg);
    padding: 10px 20px;
    font-family: var(--mono);
    font-size: 13px;
    letter-spacing: 1px;
    text-transform: uppercase;
    text-decoration: none;
    transition: background 0.2s ease, color 0.2s ease;
    white-space: nowrap;
  }
 
  .cta:hover { background: transparent; color: var(--fg); }
 
  .menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
  }
 
  .menu-toggle span { width: 22px; height: 2px; background: var(--fg); }
 
  /* ---------- HERO ---------- */
  .hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 120px 48px;
    max-width: 800px;
    margin: 0 auto;
  }
 
  .status-dot {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--muted);
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 28px;
    border: 1px solid var(--line);
    padding: 6px 14px;
    border-radius: 999px;
  }
 
  .status-dot::before {
    content: "";
    width: 6px;
    height: 6px;
    background: #3ddc84;
    border-radius: 50%;
    display: inline-block;
    box-shadow: 0 0 8px #3ddc84;
  }
 
  .hero-content .eyebrow {
    color: var(--muted);
    font-size: 13px;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 20px;
  }
 
  .hero-content h1 {
    font-size: 56px;
    line-height: 1.08;
    font-weight: 700;
    margin: 0 0 24px;
    letter-spacing: -1px;
  }
 
  .hero-content h1 span {
    color: var(--muted);
  }
 
  .hero-content p {
    color: var(--muted);
    font-size: 16px;
    line-height: 1.7;
    max-width: 520px;
    margin: 0 auto 36px;
  }
 
  .hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
  }
 
  .btn-primary {
    background: var(--fg);
    color: var(--bg);
    border: 1px solid var(--fg);
    padding: 14px 26px;
    font-family: var(--mono);
    font-size: 13px;
    letter-spacing: 1px;
    text-transform: uppercase;
    text-decoration: none;
    transition: background 0.2s ease, color 0.2s ease;
  }
 
  .btn-primary:hover { background: transparent; color: var(--fg); }
 
  .btn-secondary {
    color: var(--fg);
    font-size: 13px;
    letter-spacing: 1px;
    text-transform: uppercase;
    text-decoration: none;
    border-bottom: 1px solid var(--line);
    padding-bottom: 3px;
    transition: border-color 0.2s ease;
  }
 
  .btn-secondary:hover { border-color: var(--fg); }
 
  @media (max-width: 960px) {
    .hero { padding: 70px 32px; }
    .hero-content h1 { font-size: 40px; }
  }
 
  @media (max-width: 860px) {
    .nav-links {
      position: fixed;
      top: 65px; left: 0; right: 0;
      flex-direction: column;
      align-items: flex-start;
      gap: 0;
      background: var(--bg);
      border-bottom: 1px solid var(--line);
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
    }
    .nav-links.open { max-height: 400px; }
    .nav-links li { width: 100%; border-bottom: 1px solid var(--line); }
    .nav-links li a { display: block; padding: 16px 48px; }
    .navbar .cta { display: none; }
    .menu-toggle { display: flex; }
  }

  .about {
    max-width: 1100px;
    margin: 0 auto;
    padding: 70px 7px;
    border-top: 1px solid var(--line);
  }
 
  .section-label {
    display: flex;
    align-items: center;
    gap: 14px;
    color: var(--muted);
    font-size: 12px;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 56px;
  }
 
  .section-label .num {
    color: var(--fg);
  }
 
  .section-label::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--line);
  }
 
  .about-grid {
    display: grid;
    grid-template-columns: 1fr 1px 1fr;
    gap: 56px;
  }
 
  .about-divider {
    background: var(--line);
  }
 
  /* ---- Left: intro ---- */
  .about-intro h2 {
    font-size: 34px;
    line-height: 1.25;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin: 0 0 24px;
  }
 
  .about-intro h2 .accent {
    color: var(--muted);
  }
 
  .about-intro p {
    color: var(--muted);
    font-size: 15px;
    line-height: 1.8;
    margin: 0 0 18px;
  }
 
  .about-intro p:last-child {
    margin-bottom: 0;
  }
 
  .about-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 32px;
  }
 
  .about-tags span {
    border: 1px solid var(--line);
    color: var(--muted);
    font-size: 12px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    padding: 7px 14px;
    border-radius: 999px;
  }
 
  /* ---- Right: education / focus ---- */
  .about-details .block {
    margin-bottom: 40px;
  }
 
  .about-details .block:last-child {
    margin-bottom: 0;
  }
 
  .block-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 12px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--fg);
    margin-bottom: 20px;
  }
 
  .block-title::before {
    content: "";
    width: 6px;
    height: 6px;
    background: #3ddc84;
    border-radius: 50%;
    box-shadow: 0 0 8px #3ddc84;
    flex-shrink: 0;
  }
 
  .timeline-item {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 20px;
    padding: 18px 0;
    border-top: 1px solid var(--line);
  }
 
  .timeline-item:last-child {
    border-bottom: 1px solid var(--line);
  }
 
  .timeline-item .year {
    color: var(--muted);
    font-size: 13px;
    padding-top: 2px;
    white-space: nowrap;
  }
 
  @media (max-width: 520px) {
    .timeline-item {
      grid-template-columns: 1fr;
      gap: 6px;
    }
  }
 
  .timeline-item .content h3 {
    font-size: 15px;
    font-weight: 600;
    margin: 0 0 6px;
  }
 
  .timeline-item .content p {
    color: var(--muted);
    font-size: 13.5px;
    line-height: 1.6;
    margin: 0;
  }
 
  .focus-list {
    display: grid;
    gap: 16px;
  }
 
  .focus-item {
    display: grid;
    grid-template-columns: 24px minmax(120px, 150px) 1fr;
    align-items: start;
    column-gap: 14px;
    font-size: 14px;
  }
 
  .focus-item .idx {
    color: var(--muted);
    font-size: 12px;
    padding-top: 2px;
  }
 
  .focus-item .label {
    color: var(--fg);
    font-weight: 600;
    line-height: 1.4;
  }
 
  .focus-item .desc {
    color: var(--muted);
    font-size: 13px;
    line-height: 1.5;
  }
 
  .focus-item .desc::before {
    content: "— ";
    color: var(--muted);
  }
 
  @media (max-width: 520px) {
    .focus-item {
      grid-template-columns: 24px 1fr;
      row-gap: 4px;
    }
    .focus-item .desc {
      grid-column: 2 / 3;
    }
  }
 
  @media (max-width: 860px) {
    .about { padding: 70px 32px; }
    .about-grid {
      grid-template-columns: 1fr;
    }
    .about-divider { display: none; }
    .about-intro h2 { font-size: 28px; }
  }

   .projects {
    max-width: 1100px;
    margin: 0 auto;
    padding: 70px 7px;
    border-top: 1px solid var(--line);
  }
 
  .section-label {
    display: flex;
    align-items: center;
    gap: 14px;
    color: var(--muted);
    font-size: 12px;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 16px;
  }
 
  .section-label .num { color: var(--fg); }
 
  .section-label::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--line);
  }
 
  .projects-heading {
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin: 0 0 56px;
  }
 
  .projects-heading span { color: var(--muted); }
 
  .project-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
 
  .project-card {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--line);
    background: var(--card);
    padding: 28px;
    transition: border-color 0.2s ease, transform 0.2s ease;
  }
 
  .project-card:hover {
    border-color: #3a3a37;
    transform: translateY(-3px);
  }
 
  .card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 22px;
  }
 
  .card-index {
    font-size: 12px;
    color: var(--muted);
    letter-spacing: 1px;
  }
 
  .card-status {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
  }
 
  .card-status::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 8px var(--accent);
  }
 
  .project-name {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.3px;
    margin: 0 0 12px;
  }
 
  .project-desc {
    color: var(--muted);
    font-size: 13.5px;
    line-height: 1.7;
    margin: 0 0 24px;
    flex-grow: 1;
  }
 
  .skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 26px;
  }
 
  .skill-tags span {
    font-size: 11.5px;
    color: var(--muted);
    border: 1px solid var(--line);
    padding: 5px 10px;
    border-radius: 999px;
  }
 
  .skill-tags span::before {
    content: "#";
    color: #4a4a46;
    margin-right: 1px;
  }
 
  .btn-github {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    color: var(--fg);
    text-decoration: none;
    font-size: 12.5px;
    letter-spacing: 1px;
    text-transform: uppercase;
    border: 1px solid var(--fg);
    padding: 12px 18px;
    margin-top: auto;
    transition: background 0.2s ease, color 0.2s ease;
  }
 
  .btn-github:hover {
    background: var(--fg);
    color: var(--bg);
  }
 
  .btn-github svg {
    width: 15px;
    height: 15px;
    flex-shrink: 0;
  }
 
  @media (max-width: 900px) {
    .project-grid { grid-template-columns: 1fr; }
  }
 
  @media (max-width: 600px) {
    .projects { padding: 70px 28px; }
    .projects-heading { font-size: 26px; }
  }

   .skills {
    max-width: 1100px;
    margin: 0 auto;
    padding: 70px 7px;
    border-top: 1px solid var(--line);
  }
 
  .section-label {
    display: flex;
    align-items: center;
    gap: 14px;
    color: var(--muted);
    font-size: 12px;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 16px;
  }
 
  .section-label .num { color: var(--fg); }
 
  .section-label::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--line);
  }
 
  .skills-heading {
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin: 0 0 56px;
  }
 
  .skills-heading span { color: var(--muted); }
 
  .skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background: var(--line);
    border: 1px solid var(--line);
  }
 
  .skill-block {
    background: var(--bg);
    padding: 32px;
  }
 
  .block-header {
    display: flex;
    align-items: baseline;
    gap: 12px;
    margin-bottom: 22px;
  }
 
  .block-index {
    font-size: 12px;
    color: var(--muted);
  }
 
  .block-title {
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
  }
 
  .skill-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
  }
 
  .skill-pills span {
    font-size: 12.5px;
    color: var(--muted);
    border: 1px solid var(--line);
    padding: 8px 14px;
    border-radius: 999px;
    transition: color 0.2s ease, border-color 0.2s ease;
  }
 
  .skill-pills span:hover {
    color: var(--fg);
    border-color: #3a3a37;
  }
 
  .skill-pills span.highlight {
    color: var(--accent);
    border-color: rgba(61, 220, 132, 0.25);
  }
 
  @media (max-width: 760px) {
    .skills-grid { grid-template-columns: 1fr; }
  }
 
  @media (max-width: 600px) {
    .skills { padding: 70px 28px; }
    .skills-heading { font-size: 26px; }
    .skill-block { padding: 26px 22px; }
  }

   .services {
    max-width: 1100px;
    margin: 0 auto;
    padding: 70px 7px;
    border-top: 1px solid var(--line);
  }
 
  .section-label {
    display: flex;
    align-items: center;
    gap: 14px;
    color: var(--muted);
    font-size: 12px;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 16px;
  }
 
  .section-label .num { color: var(--fg); }
 
  .section-label::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--line);
  }
 
  .services-heading {
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin: 0 0 16px;
    max-width: 640px;
  }
 
  .services-heading span { color: var(--muted); }
 
  .services-sub {
    color: var(--muted);
    font-size: 14.5px;
    line-height: 1.7;
    max-width: 560px;
    margin: 0 0 56px;
  }
 
  .service-list {
    border-top: 1px solid var(--line);
  }
 
  .service-row {
    display: grid;
    grid-template-columns: 60px 1fr auto;
    align-items: center;
    gap: 32px;
    padding: 32px 8px;
    border-bottom: 1px solid var(--line);
    transition: background 0.2s ease;
  }
 
  .service-row:hover {
    background: var(--card);
  }
 
  .service-index {
    font-size: 13px;
    color: var(--muted);
  }
 
  .service-body h3 {
    font-size: 19px;
    font-weight: 700;
    letter-spacing: -0.2px;
    margin: 0 0 10px;
  }
 
  .service-body p {
    color: var(--muted);
    font-size: 13.5px;
    line-height: 1.7;
    margin: 0 0 14px;
    max-width: 560px;
  }
 
  .service-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
  }
 
  .service-tags span {
    font-size: 11px;
    color: var(--muted);
    border: 1px solid var(--line);
    padding: 5px 11px;
    border-radius: 999px;
  }
 
  .service-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border: 1px solid var(--line);
    border-radius: 50%;
    color: var(--muted);
    transition: border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
    flex-shrink: 0;
  }
 
  .service-row:hover .service-arrow {
    border-color: var(--accent);
    color: var(--accent);
    transform: rotate(45deg);
  }
 
  .service-arrow svg {
    width: 16px;
    height: 16px;
  }
 
  @media (max-width: 700px) {
    .service-row {
      grid-template-columns: 40px 1fr;
    }
    .service-arrow { display: none; }
    .service-index { font-size: 12px; }
  }
 
  @media (max-width: 600px) {
    .services { padding: 70px 28px; }
    .services-heading { font-size: 26px; }
    .service-row { padding: 24px 4px; gap: 16px; }
  }

    /* ================= CONTACT ================= */
  .contact {
    max-width: 1100px;
    margin: 0 auto;
    padding: 70px 7px;
    border-top: 1px solid var(--line);
  }
 
  .section-label {
    display: flex;
    align-items: center;
    gap: 14px;
    color: var(--muted);
    font-size: 12px;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 16px;
  }
 
  .section-label .num { color: var(--fg); }
 
  .section-label::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--line);
  }
 
  .contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 64px;
    margin-top: 56px;
  }
 
  .contact-intro h2 {
    font-size: 34px;
    font-weight: 700;
    letter-spacing: -0.5px;
    line-height: 1.2;
    margin: 0 0 20px;
  }
 
  .contact-intro h2 span { color: var(--muted); }
 
  .contact-intro p {
    color: var(--muted);
    font-size: 14.5px;
    line-height: 1.8;
    max-width: 400px;
    margin: 0 0 32px;
  }
 
  .contact-detail {
    display: flex;
    align-items: baseline;
    gap: 12px;
    font-size: 13.5px;
    margin-bottom: 14px;
  }
 
  .contact-detail .k {
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 11px;
    min-width: 70px;
  }
 
  .contact-detail a {
    color: var(--fg);
    text-decoration: none;
    border-bottom: 1px solid var(--line);
  }
 
  .contact-detail a:hover {
    border-color: var(--fg);
  }
 
  /* form */
  .contact-form {
    display: flex;
    flex-direction: column;
    gap: 22px;
  }
 
  .field {
    display: flex;
    flex-direction: column;
    gap: 8px;
  }
 
  .field label {
    font-size: 11px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--muted);
  }
 
  .field input,
  .field textarea {
    background: transparent;
    border: 1px solid var(--line);
    color: var(--fg);
    font-family: var(--mono);
    font-size: 14px;
    padding: 14px 16px;
    outline: none;
    transition: border-color 0.2s ease;
    resize: none;
  }
 
  .field input:focus,
  .field textarea:focus {
    border-color: var(--accent);
  }
 
  .field input::placeholder,
  .field textarea::placeholder {
    color: #4a4a46;
  }
 
  .field-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 22px;
  }
 
  .submit-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: var(--fg);
    color: var(--bg);
    border: 1px solid var(--fg);
    font-family: var(--mono);
    font-size: 13px;
    letter-spacing: 1px;
    text-transform: uppercase;
    padding: 15px 24px;
    cursor: pointer;
    transition: background 0.2s ease, color 0.2s ease;
    margin-top: 6px;
    width: fit-content;
  }
 
  .submit-btn:hover {
    background: transparent;
    color: var(--fg);
  }
 
  .submit-btn svg {
    width: 14px;
    height: 14px;
  }
 
  @media (max-width: 820px) {
    .contact-grid { grid-template-columns: 1fr; gap: 48px; }
    .contact-intro p { max-width: none; }
  }
 
  @media (max-width: 600px) {
    .contact { padding: 70px 28px; }
    .contact-intro h2 { font-size: 27px; }
    .field-row { grid-template-columns: 1fr; }
  }
 
  /* ================= FOOTER ================= */
  .footer {
    border-top: 1px solid var(--line);
  }
 
  .footer-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 40px 48px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
  }
 
  .footer-logo {
    display: flex;
    align-items: center;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--fg);
    text-decoration: underline;
    text-underline-offset: 4px;
  }
 
  .footer-logo::before {
    content: "$";
    color: var(--muted);
    margin-right: 2px;
    text-decoration: none;
  }
 
  .footer-meta {
    color: var(--muted);
    font-size: 12.5px;
    letter-spacing: 0.5px;
  }
 
  .footer-socials {
    display: flex;
    align-items: center;
    gap: 14px;
  }
 
  .footer-socials a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border: 1px solid var(--line);
    border-radius: 50%;
    color: var(--muted);
    text-decoration: none;
    transition: color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
  }
 
  .footer-socials a:hover {
    color: var(--bg);
    background: var(--fg);
    border-color: var(--fg);
    transform: translateY(-2px);
  }
 
  .footer-socials svg {
    width: 16px;
    height: 16px;
  }
 
  @media (max-width: 700px) {
    .footer-inner {
      flex-direction: column;
      text-align: center;
      padding: 36px 28px;
    }
  }