:root {
      --bg: #f7f8fa;
      --surface: #ffffff;
      --surface-soft: #eef2f7;
      --text: #172033;
      --muted: #647084;
      --line: #dfe4eb;
      --accent: #2057b5;
      --accent-dark: #163f86;
      --max-width: 1080px;
      --radius: 18px;
      --shadow: 0 8px 28px rgba(23, 32, 51, 0.07);
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      background: var(--bg);
      color: var(--text);
      font-family:
        Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI",
        Roboto, Helvetica, Arial, sans-serif;
      font-size: 16px;
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
    }

    img {
      max-width: 100%;
      height: auto;
    }

    a {
      color: var(--accent);
      text-decoration: none;
      text-underline-offset: 3px;
    }

    a:hover {
      color: var(--accent-dark);
      text-decoration: underline;
    }

    a:focus-visible,
    button:focus-visible {
      outline: 3px solid rgba(32, 87, 181, 0.25);
      outline-offset: 3px;
      border-radius: 4px;
    }

    .container {
      width: min(calc(100% - 40px), var(--max-width));
      margin-inline: auto;
    }

    .site-nav {
      position: sticky;
      top: 0;
      z-index: 20;
      border-bottom: 1px solid rgba(223, 228, 235, 0.9);
      background: rgba(247, 248, 250, 0.92);
      backdrop-filter: blur(14px);
    }

    .nav-inner {
      min-height: 68px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }

    .brand {
      color: var(--text);
      font-weight: 760;
      letter-spacing: -0.025em;
      font-size: 1.05rem;
    }

    .brand:hover {
      color: var(--text);
      text-decoration: none;
    }

    .nav-links {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: flex-end;
      gap: 20px;
      font-size: 0.91rem;
    }

    .nav-links a {
      color: var(--muted);
      font-weight: 600;
    }

    .nav-links a:hover {
      color: var(--text);
      text-decoration: none;
    }

    .hero {
      padding: 86px 0 66px;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.55fr) minmax(220px, 0.65fr);
      align-items: center;
      gap: 72px;
    }

    .eyebrow {
      margin: 0 0 14px;
      color: var(--accent);
      font-size: 0.82rem;
      font-weight: 760;
      letter-spacing: 0.12em;
      text-transform: uppercase;
    }

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

    h1 {
      margin-bottom: 18px;
      max-width: 780px;
      font-size: clamp(2.6rem, 7vw, 5.25rem);
      line-height: 0.98;
      letter-spacing: -0.055em;
      font-weight: 780;
    }

    .lead {
      max-width: 730px;
      margin-bottom: 18px;
      color: #374359;
      font-size: clamp(1.12rem, 2vw, 1.35rem);
      line-height: 1.55;
    }

    .hero-note {
      max-width: 760px;
      margin-bottom: 30px;
      color: var(--muted);
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .button {
      display: inline-flex;
      align-items: center;
      min-height: 44px;
      padding: 10px 16px;
      border: 1px solid var(--line);
      border-radius: 10px;
      background: var(--surface);
      color: var(--text);
      font-weight: 680;
      font-size: 0.92rem;
      box-shadow: 0 1px 2px rgba(23, 32, 51, 0.04);
    }

    .button:hover {
      border-color: #bdc7d5;
      color: var(--text);
      text-decoration: none;
    }

    .button.primary {
      border-color: var(--accent);
      background: var(--accent);
      color: #fff;
    }

    .button.primary:hover {
      border-color: var(--accent-dark);
      background: var(--accent-dark);
      color: #fff;
    }

    .profile-photo-wrap {
      position: relative;
      justify-self: end;
      width: min(100%, 285px);
    }

    .profile-photo {
      display: block;
      width: 100%;
      aspect-ratio: 1 / 1;
      object-fit: cover;
      border: 1px solid var(--line);
      border-radius: 28px;
      box-shadow: var(--shadow);
    }

    .photo-accent {
      position: absolute;
      right: -14px;
      bottom: -14px;
      width: 74px;
      height: 74px;
      border-radius: 22px;
      background: var(--accent);
      z-index: -1;
    }

    main section {
      scroll-margin-top: 90px;
      padding: 72px 0;
    }

    main section + section {
      border-top: 1px solid var(--line);
    }

    .section-header {
      display: grid;
      grid-template-columns: 220px minmax(0, 1fr);
      gap: 40px;
      margin-bottom: 34px;
    }

    .section-kicker {
      color: var(--accent);
      font-size: 0.82rem;
      font-weight: 760;
      letter-spacing: 0.11em;
      text-transform: uppercase;
    }

    h2 {
      margin-bottom: 12px;
      font-size: clamp(1.8rem, 3vw, 2.55rem);
      line-height: 1.15;
      letter-spacing: -0.035em;
    }

    .section-intro {
      max-width: 720px;
      margin-bottom: 0;
      color: var(--muted);
    }

    .focus-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }

    .focus-card {
      min-height: 235px;
      padding: 26px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: var(--surface);
      box-shadow: 0 3px 14px rgba(23, 32, 51, 0.035);
    }

    .focus-card .number {
      display: inline-block;
      margin-bottom: 34px;
      color: var(--accent);
      font-size: 0.82rem;
      font-weight: 760;
    }

    .focus-card h3 {
      margin-bottom: 10px;
      font-size: 1.08rem;
      line-height: 1.35;
      letter-spacing: -0.01em;
    }

    .focus-card p {
      margin-bottom: 0;
      color: var(--muted);
      font-size: 0.94rem;
    }

    .timeline {
      display: grid;
      gap: 0;
    }

    .role {
      display: grid;
      grid-template-columns: 190px minmax(0, 1fr);
      gap: 30px;
      padding: 26px 0;
      border-top: 1px solid var(--line);
    }

    .role:first-child {
      border-top: 0;
      padding-top: 0;
    }

    .role-date {
      color: var(--muted);
      font-size: 0.9rem;
      font-variant-numeric: tabular-nums;
    }

    .role h3 {
      margin-bottom: 2px;
      font-size: 1.07rem;
    }

    .role-org {
      margin-bottom: 10px;
      color: var(--accent);
      font-weight: 660;
      font-size: 0.94rem;
    }

    .role p {
      max-width: 760px;
      margin-bottom: 0;
      color: #49566b;
    }

    .publication-list {
      display: grid;
      gap: 0;
    }

    .publication {
      display: grid;
      grid-template-columns: 76px minmax(0, 1fr);
      gap: 24px;
      padding: 25px 0;
      border-top: 1px solid var(--line);
    }

    .publication:first-child {
      border-top: 0;
      padding-top: 0;
    }

    .pub-year {
      color: var(--muted);
      font-size: 0.9rem;
      font-variant-numeric: tabular-nums;
    }

    .pub-title {
      margin-bottom: 5px;
      font-weight: 735;
      line-height: 1.4;
      letter-spacing: -0.008em;
    }

    .pub-authors {
      margin-bottom: 3px;
      color: var(--muted);
      font-size: 0.9rem;
    }

    .pub-venue {
      color: #3f4b60;
      font-size: 0.9rem;
      font-style: italic;
    }

    .pub-featured {
      padding: 30px;
      margin-bottom: 22px;
      border: 1px solid #cdd8e9;
      border-radius: var(--radius);
      background: linear-gradient(135deg, #ffffff 0%, #f0f5fc 100%);
    }

    .pub-featured .pub-title {
      font-size: 1.2rem;
    }

    .two-col {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 22px;
    }

    .panel {
      padding: 28px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: var(--surface);
    }

    .panel h3 {
      margin-bottom: 16px;
      font-size: 1.05rem;
    }

    .compact-list {
      margin: 0;
      padding-left: 1.15rem;
      color: #455168;
    }

    .compact-list li + li {
      margin-top: 9px;
    }

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

    .degree {
      padding-bottom: 18px;
      border-bottom: 1px solid var(--line);
    }

    .degree:last-child {
      padding-bottom: 0;
      border-bottom: 0;
    }

    .degree strong {
      display: block;
      line-height: 1.35;
    }

    .degree span {
      display: block;
      margin-top: 4px;
      color: var(--muted);
      font-size: 0.92rem;
    }

    .talks {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px 30px;
    }

    .talk {
      padding: 14px 0;
      border-top: 1px solid var(--line);
    }

    .talk strong {
      display: block;
      margin-bottom: 2px;
      font-size: 0.94rem;
    }

    .talk span {
      color: var(--muted);
      font-size: 0.9rem;
    }

    .gallery {
      display: grid;
      grid-template-columns: 1.1fr 1fr 1fr;
      gap: 14px;
    }

    .gallery img {
      width: 100%;
      aspect-ratio: 4 / 3;
      object-fit: cover;
      border: 1px solid var(--line);
      border-radius: 14px;
    }

    footer {
      padding: 32px 0 44px;
      border-top: 1px solid var(--line);
      color: var(--muted);
      font-size: 0.9rem;
    }

    .footer-inner {
      display: flex;
      justify-content: space-between;
      gap: 20px;
      flex-wrap: wrap;
    }

    @media (max-width: 820px) {
      .site-nav {
        position: static;
      }

      .nav-inner {
        padding: 15px 0;
        align-items: flex-start;
        flex-direction: column;
        gap: 10px;
      }

      .nav-links {
        justify-content: flex-start;
        gap: 13px 18px;
      }

      .hero {
        padding: 58px 0 44px;
      }

      .hero-grid {
        grid-template-columns: 1fr;
        gap: 38px;
      }

      .profile-photo-wrap {
        justify-self: start;
        width: 210px;
      }

      .section-header,
      .role {
        grid-template-columns: 1fr;
        gap: 9px;
      }

      .focus-grid {
        grid-template-columns: 1fr;
      }

      .focus-card {
        min-height: auto;
      }

      .focus-card .number {
        margin-bottom: 22px;
      }

      .two-col,
      .talks {
        grid-template-columns: 1fr;
      }

      .gallery {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 520px) {
      .container {
        width: min(calc(100% - 28px), var(--max-width));
      }

      h1 {
        font-size: 2.7rem;
      }

      main section {
        padding: 56px 0;
      }

      .publication {
        grid-template-columns: 1fr;
        gap: 7px;
      }

      .gallery {
        grid-template-columns: 1fr;
      }

      .button {
        width: 100%;
        justify-content: center;
      }
    }

    @media (prefers-reduced-motion: reduce) {
      html {
        scroll-behavior: auto;
      }
    }

/* =========================================================
   PREVIOUS EXPERIENCE
   ========================================================= */

.previous-experience {
  max-width: 760px;
  margin: 6px 0 28px;
  color: var(--muted);
}

.previous-experience p {
  margin-bottom: 0;
}

.previous-experience img {
  display: inline-block;
  max-width: none;
  object-fit: contain;
}


/* =========================================================
   RANDOM FLYING IMAGE
   ========================================================= */

#random-flier {
  position: fixed;
  top: 0;
  left: 0;

  width: 400px;
  max-width: none;
  height: auto;

  z-index: 9999;
  pointer-events: none;
  user-select: none;

  will-change: transform;
  transform-origin: center;
}

@media (max-width: 700px) {
  #random-flier {
    width: 130px;
  }
}