:root{
    --bg:#0D0E11;
    --bg-alt:#17191D;
    --text:#EEECE4;
    --text-soft:#8D8F94;
    --cyan:#5FD6C6;
    --amber:#E8A33D;
    --line:#2B2D33;
    --line-soft:#212327;
    --max:1180px;
    --gutter:clamp(20px,5vw,64px);
  }

  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  @media (prefers-reduced-motion:reduce){
    html{scroll-behavior:auto;}
    *{animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important;}
    .reveal{opacity:1 !important;transform:none !important;}
  }

  /* ---------- Scroll reveal ---------- */
  .reveal{
    opacity:0;
    transform:translateY(28px);
    transition:opacity 0.7s cubic-bezier(.16,.8,.24,1), transform 0.7s cubic-bezier(.16,.8,.24,1);
  }
  .reveal.is-visible{
    opacity:1;
    transform:translateY(0);
  }
  .reveal-stagger.is-visible .stagger-child{
    transition-delay:calc(var(--i, 0) * 70ms);
  }

  /* ---------- Scrub bar (top progress) ---------- */
  .scrub{
    position:fixed;
    top:0;left:0;right:0;
    height:2px;
    z-index:70;
    background:var(--line-soft);
  }
  .scrub-fill{
    height:100%;
    width:0%;
    background:linear-gradient(90deg, var(--amber), var(--cyan));
    transition:width 0.08s linear;
  }

  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:'Inter',sans-serif;
    font-size:16px;
    line-height:1.55;
    -webkit-font-smoothing:antialiased;
  }

  h1,h2,h3,.display{
    font-family:'Bricolage Grotesque',sans-serif;
    font-weight:700;
    letter-spacing:-0.01em;
    margin:0;
  }

  .mono{
    font-family:'IBM Plex Mono',monospace;
    font-size:13px;
    letter-spacing:0.02em;
  }

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

  ::selection{background:var(--cyan);color:var(--bg);}

  a:focus-visible,
  button:focus-visible{
    outline:2px solid var(--cyan);
    outline-offset:3px;
  }

  .wrap{
    max-width:var(--max);
    margin:0 auto;
    padding:0 var(--gutter);
  }

  /* ---------- Nav ---------- */
  header.site-nav{
    position:fixed;
    top:0;left:0;right:0;
    z-index:60;
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:20px var(--gutter);
    background:rgba(13,14,17,0.78);
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    border-bottom:1px solid var(--line);
    color:var(--text);
  }
  header.site-nav .mark{font-family:'Bricolage Grotesque',sans-serif;font-weight:700;font-size:15px;letter-spacing:0.01em;text-decoration:none;}
  header.site-nav .nav-right{display:flex;align-items:center;gap:28px;}
  header.site-nav nav{display:flex;gap:28px;}
  header.site-nav nav a{
    font-size:13px;
    text-decoration:none;
    font-family:'IBM Plex Mono',monospace;
    color:var(--text-soft);
    transition:color 0.2s ease;
  }
  header.site-nav nav a:hover{color:var(--text);}
  header.site-nav .nav-tc{
    font-family:'IBM Plex Mono',monospace;
    font-size:11px;
    color:var(--text-soft);
    white-space:nowrap;
  }
  @media (max-width:640px){
    header.site-nav nav{gap:16px;}
    header.site-nav nav a span{display:none;}
    header.site-nav .nav-tc{display:none;}
  }

  /* clear the fixed header for in-page anchors and first section under it */
  section{scroll-margin-top:76px;}


  /* ---------- Hero ---------- */
  .hero{
    min-height:100svh;
    display:flex;
    flex-direction:column;
    justify-content:center;
    position:relative;
    padding-top:90px;
    padding-bottom:40px;
  }
  .hero .eyebrow-row{
    display:flex;
    justify-content:space-between;
    align-items:flex-end;
    margin-bottom:18px;
    color:var(--text-soft);
  }
  .hero h1{
    font-size:clamp(3rem,11vw,8.2rem);
    line-height:0.92;
    text-transform:none;
    overflow:hidden;
  }
  .hero h1 span{
    display:block;
    transform:translateY(100%);
    animation:riseIn 0.9s cubic-bezier(.16,.8,.24,1) forwards;
  }
  .hero h1 span:nth-child(2){animation-delay:0.1s;}
  @keyframes riseIn{
    to{transform:translateY(0);}
  }
  @media (prefers-reduced-motion:reduce){
    .hero h1 span{animation:none;transform:none;}
  }
  .hero .role{
    margin-top:20px;
    font-size:clamp(1.1rem,2.4vw,1.6rem);
    max-width:640px;
    color:var(--text-soft);
    font-weight:400;
    opacity:0;
    animation:fadeUp 0.8s cubic-bezier(.16,.8,.24,1) forwards;
    animation-delay:0.5s;
  }
  @keyframes fadeUp{
    from{opacity:0;transform:translateY(14px);}
    to{opacity:1;transform:translateY(0);}
  }
  @media (prefers-reduced-motion:reduce){
    .hero .role{animation:none;opacity:1;}
  }
  .hero .role strong{color:var(--text);font-weight:600;}
  .hero .footer-row{
    display:flex;
    justify-content:space-between;
    align-items:flex-end;
    margin-top:56px;
    padding-top:20px;
    border-top:1px solid var(--line);
    color:var(--text-soft);
    gap:24px;
    flex-wrap:wrap;
  }
  .hero .footer-row .tc{color:var(--cyan);}
  .scroll-cue{
    display:flex;
    align-items:center;
    gap:10px;
  }
  .scroll-cue .dot{
    width:7px;height:7px;border-radius:50%;
    background:var(--cyan);
    animation:pulse 2.2s ease-in-out infinite;
  }
  @keyframes pulse{
    0%,100%{opacity:0.35;transform:scale(0.85);}
    50%{opacity:1;transform:scale(1);}
  }

  section{padding:120px 0;}
  @media (max-width:768px){section{padding:80px 0;}}

  .section-head{
    display:flex;
    justify-content:space-between;
    align-items:baseline;
    gap:24px;
    margin-bottom:56px;
    border-bottom:1px solid var(--line);
    padding-bottom:22px;
  }
  .section-head h2{font-size:clamp(1.8rem,4vw,2.8rem);}
  .section-head .mono{color:var(--text-soft);white-space:nowrap;}

  /* ---------- About ---------- */
  .about-grid{
    display:grid;
    grid-template-columns:1.1fr 0.9fr;
    gap:64px;
  }
  @media (max-width:860px){.about-grid{grid-template-columns:1fr;gap:40px;}}
  .about-grid p{
    font-size:clamp(1.05rem,1.6vw,1.35rem);
    max-width:52ch;
    color:var(--text);
  }
  .about-grid p + p{margin-top:20px;color:var(--text-soft);}

  .skills-col .skills-group{margin-bottom:28px;}
  .skills-col .skills-group:last-child{margin-bottom:0;}
  .skills-col h3{
    font-family:'IBM Plex Mono',monospace;
    font-size:13px;
    font-weight:500;
    color:var(--text-soft);
    margin-bottom:14px;
  }
  .tag-list{display:flex;flex-wrap:wrap;gap:8px;}
  .tag-list span{
    border:1px solid var(--line);
    padding:7px 13px;
    border-radius:2px;
    font-size:14px;
  }

  .about-meta{
    margin-top:36px;
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:20px 24px;
  }
  .about-meta div{border-top:1px solid var(--line-soft);padding-top:10px;}
  .about-meta .k{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--text-soft);margin-bottom:4px;}
  .about-meta .v{font-size:15px;}

  /* ---------- Works ---------- */
  .works-grid{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:2px;
    background:var(--line);
    border:1px solid var(--line);
  }
  @media (max-width:760px){.works-grid{grid-template-columns:1fr;}}

  .frame{
    background:var(--bg-alt);
    padding:38px clamp(20px,3vw,40px);
    min-height:290px;
    display:flex;
    flex-direction:column;
    justify-content:space-between;
    position:relative;
    transition:background 0.25s ease;
  }
  .frame:hover{background:var(--bg);}
  .frame .fr-top{display:flex;justify-content:space-between;align-items:flex-start;}
  .frame .fr-num{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--text-soft);}
  .frame .fr-tag{
    font-family:'IBM Plex Mono',monospace;
    font-size:11px;
    border:1px dashed var(--text-soft);
    color:var(--text-soft);
    padding:4px 8px;
    border-radius:2px;
  }
  .frame h3{
    font-size:clamp(1.5rem,2.6vw,2.1rem);
    margin-top:28px;
    line-height:1.05;
  }
  .frame p{
    margin:14px 0 0;
    color:var(--text-soft);
    font-size:14.5px;
    max-width:42ch;
  }
  .frame .fr-market{
    margin-top:22px;
    font-family:'IBM Plex Mono',monospace;
    font-size:12px;
    color:var(--cyan);
  }

  /* ---------- Resume ---------- */
  .resume-top{
    display:flex;
    justify-content:space-between;
    align-items:center;
    gap:24px;
    flex-wrap:wrap;
    margin-bottom:8px;
  }
  .btn{
    display:inline-flex;
    align-items:center;
    gap:10px;
    background:var(--text);
    color:var(--bg);
    text-decoration:none;
    padding:14px 22px;
    font-family:'IBM Plex Mono',monospace;
    font-size:13px;
    border:1px solid var(--text);
    border-radius:2px;
    transition:background 0.2s ease, color 0.2s ease;
  }
  .btn:hover{background:transparent;color:var(--text);}

  .timeline{margin-top:60px;}
  .tl-item{
    display:grid;
    grid-template-columns:140px 1fr;
    gap:32px;
    padding:32px 0;
    border-top:1px solid var(--line);
  }
  .tl-item:last-child{border-bottom:1px solid var(--line);}
  @media (max-width:680px){.tl-item{grid-template-columns:1fr;gap:10px;}}
  .tl-date{
    font-family:'IBM Plex Mono',monospace;
    font-size:13px;
    color:var(--cyan);
  }
  .tl-content h3{font-size:1.3rem;margin-bottom:2px;}
  .tl-content .org{color:var(--text-soft);font-size:14.5px;margin-bottom:14px;}
  .tl-content ul{margin:0;padding-left:18px;color:var(--text-soft);font-size:14.5px;}
  .tl-content li{margin-bottom:6px;}
  .tl-content li::marker{color:var(--amber);}

  .edu-lang{
    margin-top:8px;
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:40px;
  }
  @media (max-width:680px){.edu-lang{grid-template-columns:1fr;gap:32px;}}
  .edu-lang h3{
    font-family:'IBM Plex Mono',monospace;
    font-size:13px;
    font-weight:500;
    color:var(--text-soft);
    margin-bottom:16px;
    padding-top:24px;
    border-top:1px solid var(--line);
  }
  .edu-item{margin-bottom:16px;}
  .edu-item .deg{font-size:16px;font-weight:600;font-family:'Bricolage Grotesque',sans-serif;}
  .edu-item .sc{color:var(--text-soft);font-size:14px;}

  /* ---------- Contact ---------- */
  .contact-inner{
    display:flex;
    flex-direction:column;
    align-items:flex-start;
  }
  .contact-inner h2{
    font-size:clamp(2.4rem,7vw,5.5rem);
    line-height:0.98;
    max-width:14ch;
  }
  .contact-inner h2 a{text-decoration:none;border-bottom:2px solid var(--amber);}
  .contact-icons{
    margin-top:56px;
    display:flex;
    gap:20px;
    flex-wrap:wrap;
    border-top:1px solid var(--line);
    padding-top:40px;
    width:100%;
  }
  .c-icon-btn{
    position:relative;
    display:flex;
    align-items:center;
    justify-content:center;
    width:60px;height:60px;
    border:1px solid var(--line);
    border-radius:50%;
    color:var(--text-soft);
    text-decoration:none;
    transition:color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
  }
  .c-icon-btn svg{width:22px;height:22px;}
  .c-icon-btn:hover,
  .c-icon-btn:focus-visible{
    color:var(--cyan);
    border-color:var(--cyan);
    transform:translateY(-3px);
  }
  .c-icon-btn::after{
    content:attr(data-tip);
    position:absolute;
    bottom:calc(100% + 10px);
    left:50%;
    transform:translate(-50%,4px);
    background:var(--bg-alt);
    border:1px solid var(--line);
    color:var(--text);
    font-family:'IBM Plex Mono',monospace;
    font-size:11px;
    letter-spacing:0.03em;
    white-space:nowrap;
    padding:6px 10px;
    border-radius:3px;
    opacity:0;
    pointer-events:none;
    transition:opacity 0.18s ease, transform 0.18s ease;
  }
  .c-icon-btn:hover::after,
  .c-icon-btn:focus-visible::after{
    opacity:1;
    transform:translate(-50%,0);
  }

  footer{
    padding:26px var(--gutter) 40px;
    display:flex;
    justify-content:space-between;
    color:var(--text-soft);
    font-family:'IBM Plex Mono',monospace;
    font-size:12px;
    flex-wrap:wrap;
    gap:10px;
  }