:root {
      --bg: #f7f8fa;
      --surface: #ffffff;
      --surface-soft: #eef6f5;
      --ink: #101828;
      --muted: #667085;
      --line: #d9e1e7;
      --teal: #14b8a6;
      --teal-dark: #0f766e;
      --amber: #f59e0b;
      --rose: #e11d48;
      --charcoal: #17202a;
      --shadow: 0 18px 55px rgba(16, 24, 40, 0.12);
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      color: var(--ink);
      background: var(--bg);
      line-height: 1.6;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

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

    .site-header {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(247, 248, 250, 0.9);
      border-bottom: 1px solid rgba(217, 225, 231, 0.8);
      backdrop-filter: blur(18px);
    }

    .nav {
      width: min(1160px, calc(100% - 40px));
      min-height: 72px;
      margin: 0 auto;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      letter-spacing: 0;
    }

    .brand-mark {
      width: 38px;
      height: 38px;
      display: grid;
      place-items: center;
      color: #ffffff;
      background: var(--charcoal);
      border: 3px solid var(--teal);
      border-radius: 8px;
      font-size: 0.85rem;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 6px;
      color: var(--muted);
      font-weight: 700;
      font-size: 0.92rem;
    }

    .nav-links a {
      padding: 10px 12px;
      border-radius: 8px;
    }

    .nav-links a:hover,
    .nav-links a[aria-current="page"],
    .nav-links a:focus-visible {
      color: var(--ink);
      background: var(--surface-soft);
      outline: none;
    }

    .hero {
      min-height: 86vh;
      display: grid;
      align-items: center;
      position: relative;
      overflow: hidden;
      background:
        linear-gradient(90deg, rgba(247, 248, 250, 0.99) 0%, rgba(247, 248, 250, 0.93) 42%, rgba(247, 248, 250, 0.58) 100%),
        url("../certification-html5.jpg") right center / cover no-repeat;
      border-bottom: 1px solid var(--line);
    }

    .hero::before {
      content: "";
      position: absolute;
      inset: auto 0 0 0;
      height: 10px;
      background: linear-gradient(90deg, var(--teal), var(--amber), var(--rose));
    }

    .hero-inner {
      width: min(1160px, calc(100% - 40px));
      margin: 0 auto;
      padding: 80px 0 96px;
      display: grid;
      grid-template-columns: minmax(0, 1fr) 360px;
      align-items: end;
      gap: 56px;
      position: relative;
      z-index: 1;
    }

    .eyebrow {
      display: inline-flex;
      width: fit-content;
      align-items: center;
      gap: 10px;
      margin: 0 0 18px;
      padding: 8px 12px;
      color: var(--teal-dark);
      background: rgba(20, 184, 166, 0.11);
      border: 1px solid rgba(20, 184, 166, 0.25);
      border-radius: 8px;
      font-weight: 800;
      font-size: 0.84rem;
    }

    h1,
    h2,
    h3,
    p {
      margin-top: 0;
    }

    h1 {
      max-width: 790px;
      margin-bottom: 22px;
      font-size: clamp(2.6rem, 8vw, 5.8rem);
      line-height: 0.97;
      letter-spacing: 0;
    }

    .hero-lede {
      max-width: 670px;
      margin-bottom: 30px;
      color: #344054;
      font-size: clamp(1.05rem, 2vw, 1.28rem);
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-bottom: 34px;
    }

    .button {
      min-height: 46px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      padding: 12px 18px;
      border: 1px solid transparent;
      border-radius: 8px;
      font-weight: 800;
      transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
    }

    .button:hover,
    .button:focus-visible {
      transform: translateY(-2px);
      outline: none;
    }

    .button-primary {
      color: #ffffff;
      background: var(--charcoal);
      box-shadow: 0 12px 32px rgba(23, 32, 42, 0.22);
    }

    .button-secondary {
      color: var(--ink);
      background: var(--surface);
      border-color: var(--line);
    }

    .quick-facts {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
      max-width: 760px;
    }

    .fact {
      min-height: 96px;
      padding: 16px;
      background: rgba(255, 255, 255, 0.78);
      border: 1px solid rgba(217, 225, 231, 0.9);
      border-radius: 8px;
      backdrop-filter: blur(12px);
    }

    .fact strong {
      display: block;
      margin-bottom: 4px;
      font-size: 1.04rem;
    }

    .fact span {
      color: var(--muted);
      font-size: 0.92rem;
    }

    .profile-visual {
      align-self: center;
      display: grid;
      gap: 14px;
    }

    .profile-card {
      overflow: hidden;
      background: var(--surface);
      border: 1px solid rgba(217, 225, 231, 0.9);
      border-radius: 8px;
      box-shadow: var(--shadow);
    }

    .profile-photo-frame {
      aspect-ratio: 3 / 4;
      background: #ffffff;
    }

    .profile-image {
      width: 100%;
      height: 100%;
      object-fit: cover;
      object-position: center top;
    }

    .profile-caption {
      padding: 20px;
      color: var(--ink);
      background: var(--surface);
      border-top: 1px solid var(--line);
    }

    .profile-caption h2 {
      margin-bottom: 8px;
      font-size: clamp(1.35rem, 3vw, 1.85rem);
      line-height: 1.12;
    }

    .profile-caption p {
      margin-bottom: 0;
      color: var(--muted);
    }

    .availability {
      padding: 14px 16px;
      color: #17382f;
      background: #e8f8f3;
      border: 1px solid #bfeadd;
      border-radius: 8px;
      font-weight: 800;
    }

    .section {
      width: min(1160px, calc(100% - 40px));
      margin: 0 auto;
      padding: 84px 0;
    }

    .section-heading {
      display: grid;
      grid-template-columns: minmax(0, 0.9fr) minmax(260px, 1.1fr);
      gap: 40px;
      margin-bottom: 34px;
      align-items: end;
    }

    .section-kicker {
      display: inline-block;
      margin-bottom: 10px;
      color: var(--rose);
      font-size: 0.8rem;
      font-weight: 900;
      text-transform: uppercase;
    }

    h2 {
      margin-bottom: 0;
      font-size: clamp(2rem, 5vw, 3.6rem);
      line-height: 1.03;
      letter-spacing: 0;
    }

    .section-heading p {
      margin-bottom: 0;
      color: var(--muted);
      font-size: 1.03rem;
    }

    .about-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.95fr);
      gap: 24px;
      align-items: stretch;
    }

    .about-copy {
      padding: 34px;
      background: var(--surface);
      border: 1px solid var(--line);
      border-radius: 8px;
    }

    .about-copy p {
      margin-bottom: 18px;
      color: #344054;
      font-size: 1.05rem;
    }

    .about-copy p:last-child {
      margin-bottom: 0;
    }

    .value-list {
      display: grid;
      gap: 14px;
    }

    .value-item {
      padding: 20px;
      background: var(--charcoal);
      color: #ffffff;
      border-radius: 8px;
    }

    .value-item:nth-child(2) {
      background: var(--teal-dark);
    }

    .value-item:nth-child(3) {
      background: #7a3f11;
    }

    .value-item strong {
      display: block;
      margin-bottom: 6px;
      font-size: 1.05rem;
    }

    .value-item span {
      color: rgba(255, 255, 255, 0.78);
    }

    .skills-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 16px;
    }

    .skill-group {
      min-height: 278px;
      padding: 22px;
      background: var(--surface);
      border: 1px solid var(--line);
      border-radius: 8px;
    }

    .skill-group h3 {
      margin-bottom: 16px;
      font-size: 1.02rem;
    }

    .skill-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .tag {
      padding: 8px 10px;
      color: #243443;
      background: #f0f4f7;
      border: 1px solid #dce5eb;
      border-radius: 8px;
      font-weight: 800;
      font-size: 0.86rem;
    }

    .timeline {
      display: grid;
      gap: 16px;
    }

    .project-card {
      display: grid;
      grid-template-columns: 200px minmax(0, 1fr);
      gap: 24px;
      padding: 24px;
      background: var(--surface);
      border: 1px solid var(--line);
      border-radius: 8px;
    }

    .project-meta {
      color: var(--muted);
      font-weight: 800;
      font-size: 0.9rem;
    }

    .project-card h3 {
      margin-bottom: 10px;
      font-size: 1.24rem;
    }

    .project-card ul {
      margin: 0;
      padding-left: 20px;
      color: #344054;
    }

    .project-card li + li {
      margin-top: 8px;
    }

    .certificate {
      display: grid;
      grid-template-columns: minmax(0, 0.88fr) minmax(320px, 1.12fr);
      gap: 24px;
      padding: 26px;
      color: #ffffff;
      background: var(--charcoal);
      border-radius: 8px;
      align-items: center;
    }

    .certificate h3 {
      margin-bottom: 10px;
      font-size: clamp(1.5rem, 3vw, 2rem);
    }

    .certificate p {
      color: rgba(255, 255, 255, 0.78);
    }

    .certificate img {
      width: 100%;
      aspect-ratio: 16 / 10;
      object-fit: cover;
      object-position: center;
      border-radius: 8px;
      border: 1px solid rgba(255, 255, 255, 0.18);
    }

    .cert-details {
      display: grid;
      gap: 10px;
      margin-top: 22px;
      color: rgba(255, 255, 255, 0.86);
      font-weight: 800;
    }

    .page-hero {
      padding: 82px 0 54px;
      background:
        linear-gradient(135deg, rgba(20, 184, 166, 0.12), rgba(225, 29, 72, 0.08)),
        var(--bg);
      border-bottom: 1px solid var(--line);
    }

    .page-hero-inner {
      width: min(1160px, calc(100% - 40px));
      margin: 0 auto;
      display: grid;
      grid-template-columns: minmax(0, 0.92fr) minmax(260px, 0.55fr);
      gap: 40px;
      align-items: end;
    }

    .page-title {
      margin-bottom: 16px;
      font-size: clamp(2.7rem, 8vw, 5.2rem);
      line-height: 0.98;
    }

    .page-lede {
      max-width: 720px;
      margin-bottom: 0;
      color: #344054;
      font-size: clamp(1.02rem, 2vw, 1.18rem);
    }

    .page-stats {
      display: grid;
      gap: 12px;
    }

    .page-stat {
      padding: 16px;
      background: var(--surface);
      border: 1px solid var(--line);
      border-radius: 8px;
      box-shadow: 0 10px 34px rgba(16, 24, 40, 0.07);
    }

    .page-stat strong {
      display: block;
      margin-bottom: 4px;
      font-size: 1.05rem;
    }

    .page-stat span {
      color: var(--muted);
      font-size: 0.92rem;
    }

    .resume-section {
      width: min(1160px, calc(100% - 40px));
      margin: 0 auto;
      padding: 64px 0;
    }

    .resume-section + .resume-section {
      padding-top: 10px;
    }

    .resume-section-header {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 24px;
      margin-bottom: 26px;
      padding-bottom: 14px;
      border-bottom: 1px solid var(--line);
    }

    .resume-section-header h2 {
      font-size: clamp(1.65rem, 4vw, 2.35rem);
      line-height: 1.05;
      text-transform: uppercase;
    }

    .resume-section-header p {
      max-width: 460px;
      margin-bottom: 0;
      color: var(--muted);
    }

    .resume-list {
      display: grid;
      gap: 18px;
    }

    .resume-item {
      position: relative;
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      gap: 18px 28px;
      padding: 22px 24px 22px 44px;
      background: var(--surface);
      border: 1px solid var(--line);
      border-radius: 8px;
      box-shadow: 0 12px 38px rgba(16, 24, 40, 0.06);
    }

    .resume-item::before {
      content: "";
      position: absolute;
      top: 28px;
      left: 20px;
      width: 10px;
      height: 10px;
      background: var(--charcoal);
      border-radius: 999px;
      box-shadow: 0 0 0 5px rgba(20, 184, 166, 0.12);
    }

    .resume-company,
    .resume-title {
      margin-bottom: 4px;
      font-size: 1.04rem;
      font-weight: 900;
    }

    .resume-role,
    .resume-subtitle {
      margin-bottom: 8px;
      color: #344054;
      font-weight: 600;
    }

    .resume-period {
      color: #263b4b;
      font-weight: 800;
      white-space: nowrap;
    }

    .resume-details {
      margin: 0;
      padding-left: 20px;
      color: #344054;
    }

    .resume-details li + li {
      margin-top: 4px;
    }

    .resume-note {
      margin: 10px 0 0;
      color: var(--muted);
    }

    .resume-note a {
      color: var(--teal-dark);
      font-weight: 900;
    }

    .resume-note a:hover,
    .resume-note a:focus-visible {
      color: var(--charcoal);
      outline: none;
    }

    .resume-compact .resume-item {
      align-items: start;
      min-height: 106px;
    }

    .contact-band {
      background: var(--charcoal);
      color: #ffffff;
    }

    .contact {
      width: min(1160px, calc(100% - 40px));
      margin: 0 auto;
      padding: 76px 0;
      display: grid;
      grid-template-columns: minmax(0, 1fr) minmax(260px, 0.7fr);
      gap: 40px;
      align-items: end;
    }

    .contact h2 {
      max-width: 760px;
      margin-bottom: 18px;
    }

    .contact p {
      max-width: 660px;
      margin-bottom: 0;
      color: rgba(255, 255, 255, 0.75);
      font-size: 1.08rem;
    }

    .contact-links {
      display: grid;
      gap: 10px;
    }

    .contact-link {
      padding: 14px 16px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.16);
      border-radius: 8px;
      font-weight: 800;
    }

    .contact-link:hover,
    .contact-link:focus-visible {
      background: rgba(255, 255, 255, 0.14);
      outline: none;
    }

    footer {
      padding: 22px 0;
      color: rgba(255, 255, 255, 0.64);
      background: #0e151c;
      text-align: center;
      font-size: 0.9rem;
    }

    @media (max-width: 980px) {
      .hero {
        min-height: auto;
        background:
          linear-gradient(180deg, rgba(247, 248, 250, 0.98) 0%, rgba(247, 248, 250, 0.89) 100%),
          url("../certification-html5.jpg") center top / cover no-repeat;
      }

      .hero-inner,
      .page-hero-inner,
      .section-heading,
      .about-grid,
      .certificate,
      .contact {
        grid-template-columns: 1fr;
      }

      .profile-visual {
        max-width: 420px;
      }

      .quick-facts,
      .skills-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .project-card {
        grid-template-columns: 1fr;
      }

      .resume-item {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 700px) {
      .nav {
        width: min(100% - 28px, 1160px);
        min-height: auto;
        padding: 14px 0;
        align-items: flex-start;
        flex-direction: column;
      }

      .nav-links {
        width: 100%;
        overflow-x: auto;
        padding-bottom: 4px;
      }

      .hero-inner,
      .page-hero-inner,
      .resume-section,
      .section,
      .contact {
        width: min(100% - 28px, 1160px);
      }

      .page-hero {
        padding: 54px 0 40px;
      }

      .resume-section {
        padding: 42px 0;
      }

      .resume-section-header {
        align-items: start;
        flex-direction: column;
      }

      .hero-inner {
        padding: 58px 0 72px;
      }

      .quick-facts,
      .skills-grid {
        grid-template-columns: 1fr;
      }

      .about-copy,
      .certificate,
      .project-card {
        padding: 20px;
      }

      .profile-photo-frame {
        aspect-ratio: 4 / 5;
      }
    }