:root{
    --bg:#070707;
    --bg-elev:#0C0C0C;
    --surface:#141414;
    --surface-2:#1B1B1B;
    --border:#2B2B2B;
    --border-soft:#1D1D1D;
    --text:#F5F5F5;
    --text-dim:#A6A6A6;
    --text-faint:#707070;
    --teal:#FF6B35;
    --teal-dim:rgba(255,107,53,0.14);
    --amber:#FF2D6B;
    --amber-dim:rgba(255,45,107,0.14);
    --blue:#FF8A50;
    --grad:linear-gradient(90deg,#FF7A3D 0%,#FF2D6B 100%);
    --radius:14px;
    --pill:100px;
    --maxw:1180px;
    --display:'Poppins', sans-serif;
    --body:'Inter', sans-serif;
    --mono:'Poppins', sans-serif;
  }

  *{margin:0;padding:0;box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    background:var(--bg);
    color:var(--text);
    font-family:var(--body);
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  ::selection{background:var(--teal);color:#04140F;}

  a{color:inherit;text-decoration:none;}
  ul{list-style:none;}
  img{max-width:100%;display:block;}

  .wrap{max-width:var(--maxw);margin:0 auto;padding:0 32px;}

  /* ---------- ambient background grid ---------- */
  .grid-bg{
    position:fixed;inset:0;z-index:0;pointer-events:none;
    background-image:
      linear-gradient(var(--border-soft) 1px, transparent 1px),
      linear-gradient(90deg, var(--border-soft) 1px, transparent 1px);
    background-size:64px 64px;
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 10%, transparent 75%);
    mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 10%, transparent 75%);
    opacity:.55;
  }
  .scanline{
    position:fixed;left:0;right:0;height:120px;z-index:0;pointer-events:none;
    background:linear-gradient(to bottom, transparent, rgba(255,122,61,0.06), transparent);
    animation:scan 9s linear infinite;
  }
  @keyframes scan{
    0%{top:-120px;}
    100%{top:100vh;}
  }

  section{position:relative;z-index:1;}

  /* ---------- nav ---------- */
  header{
    position:fixed;top:0;left:0;right:0;z-index:50;
    background:rgba(10,16,22,0.78);
    backdrop-filter:blur(10px);
    border-bottom:1px solid var(--border-soft);
  }
  nav{
    max-width:var(--maxw);margin:0 auto;padding:16px 32px;
    display:flex;align-items:center;justify-content:space-between;
  }
  .brand{display:flex;align-items:center;gap:10px;font-family:var(--mono);font-size:14px;}
  .brand-mark{
    width:34px;height:34px;border:1px solid var(--teal);border-radius:8px;
    display:flex;align-items:center;justify-content:center;color:var(--teal);
    font-family:var(--mono);font-weight:600;font-size:13px;
    box-shadow:0 0 14px rgba(255,45,107,0.25) inset;
  }
  .brand-text b{color:var(--text);font-weight:600;display:block;font-size:14px;}
  .brand-text span{color:var(--text-faint);font-size:11px;letter-spacing:.03em;}

  .nav-links{display:flex;gap:28px;align-items:center;}
  .nav-links a{
    font-size:13px;color:var(--text-dim);font-family:var(--mono);
    letter-spacing:.02em;transition:color .2s;position:relative;
  }
  .nav-links a:hover{color:var(--teal);}
  .nav-cta{
    font-family:var(--body);font-size:13px;color:#fff;
    background:var(--grad);padding:11px 20px;border-radius:var(--pill);
    border:none;font-weight:700;letter-spacing:0;
    transition:transform .15s ease, box-shadow .15s ease;
    white-space:nowrap;
  }
  .nav-cta:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(255,45,107,0.35);}
  .nav-toggle{display:none;background:none;border:1px solid var(--border);color:var(--text);width:38px;height:38px;border-radius:6px;font-size:16px;cursor:pointer;}
  .nav-links-mobile{
    display:none;flex-direction:column;gap:2px;
    border-top:1px solid var(--border-soft);background:var(--bg-elev);
    padding:8px 20px 14px;
  }
  .nav-links-mobile.open{display:flex;}
  .nav-links-mobile a{
    font-family:var(--mono);font-size:13.5px;color:var(--text-dim);
    padding:12px 4px;border-bottom:1px solid var(--border-soft);
  }
  .nav-links-mobile a:last-child{border-bottom:none;}

  /* ---------- hero ---------- */
  .hero{
    padding:168px 0 96px;
    display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
  }
  .kicker{
    font-family:var(--mono);font-size:12.5px;color:var(--teal);
    letter-spacing:.1em;margin-bottom:18px;font-weight:600;
  }
  .status-pill{
    display:inline-flex;align-items:center;gap:8px;
    border:1px solid var(--border);background:var(--surface);
    padding:8px 16px;border-radius:var(--pill);
    font-family:var(--body);font-size:12.5px;font-weight:500;color:var(--text-dim);
    letter-spacing:.01em;margin:22px 0;
  }
  .dot-live{width:7px;height:7px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 0 rgba(255,107,53,.6);animation:pulseDot 2s infinite;}
  @keyframes pulseDot{
    0%{box-shadow:0 0 0 0 rgba(255,107,53,.55);}
    70%{box-shadow:0 0 0 8px rgba(255,107,53,0);}
    100%{box-shadow:0 0 0 0 rgba(255,107,53,0);}
  }
  .hero h1{
    font-family:var(--display);
    font-size:clamp(34px, 4.6vw, 56px);
    line-height:1.08;font-weight:800;
    letter-spacing:-.01em;
    margin-bottom:20px;
  }
  .hero h1 em{
    font-style:normal;
    background:var(--grad);
    -webkit-background-clip:text;background-clip:text;color:transparent;
  }
  .hero p.lede{
    font-size:17px;color:var(--text-dim);max-width:520px;margin-bottom:32px;
  }
  .hero-ctas{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:48px;}
  .btn{
    font-family:var(--body);font-size:13.5px;font-weight:600;
    padding:14px 24px;border-radius:var(--pill);letter-spacing:0;
    display:inline-flex;align-items:center;gap:8px;
    transition:transform .15s ease, background .15s ease, border-color .15s ease, box-shadow .15s ease;
  }
  .btn-primary{background:var(--grad);color:#fff;border:none;font-weight:700;}
  .btn-primary:hover{transform:translateY(-1px);box-shadow:0 10px 24px rgba(255,45,107,.35);}
  .btn-ghost{border:1px solid var(--border);color:var(--text);background:transparent;}
  .btn-ghost:hover{border-color:var(--teal);color:var(--teal);}

  .hero-meta{display:flex;gap:28px;flex-wrap:wrap;}
  .hero-meta div{font-family:var(--mono);font-size:12px;color:var(--text-faint);}
  .hero-meta strong{display:block;color:var(--text);font-size:13px;font-weight:500;margin-bottom:2px;}

  /* topology diagram */
  .topo{
    position:relative;border:1px solid var(--border);border-radius:18px;
    background:radial-gradient(120% 100% at 65% 20%, rgba(255,90,60,0.16) 0%, #0B0B0B 65%);
    padding:14px;
  }
  .topo-header{
    display:flex;justify-content:space-between;align-items:center;
    font-family:var(--mono);font-size:10.5px;color:var(--text-faint);
    padding:2px 6px 12px;letter-spacing:.04em;
  }
  .topo-header .status{color:var(--teal);}
  .topo svg{width:100%;height:auto;display:block;}

  /* profile photo card */
  .photo-frame{
    position:relative;border-radius:10px;overflow:hidden;
    aspect-ratio:4/5;background:#0B1319;
  }
  .photo-frame img{
    width:100%;height:100%;object-fit:cover;object-position:center 18%;
    filter:saturate(1.02);
  }
  .photo-frame::after{
    content:'';position:absolute;inset:0;
    background:linear-gradient(180deg, rgba(10,16,22,0) 55%, rgba(6,10,14,0.88) 100%),
               linear-gradient(90deg, rgba(255,122,61,0.06), transparent 30%, transparent 70%, rgba(255,122,61,0.06));
    pointer-events:none;
  }
  .photo-scan{
    position:absolute;left:0;right:0;height:90px;
    background:linear-gradient(to bottom, transparent, rgba(255,122,61,0.12), transparent);
    animation:photoScan 5s linear infinite;pointer-events:none;
  }
  @keyframes photoScan{
    0%{top:-90px;}
    100%{top:100%;}
  }
  .photo-corner{
    position:absolute;width:18px;height:18px;border-color:var(--teal);opacity:.8;pointer-events:none;
  }
  .photo-corner.tl{top:10px;left:10px;border-top:2px solid;border-left:2px solid;}
  .photo-corner.tr{top:10px;right:10px;border-top:2px solid;border-right:2px solid;}
  .photo-corner.bl{bottom:10px;left:10px;border-bottom:2px solid;border-left:2px solid;}
  .photo-corner.br{bottom:10px;right:10px;border-bottom:2px solid;border-right:2px solid;}
  .photo-caption{
    position:absolute;left:16px;bottom:14px;display:flex;flex-direction:column;gap:2px;
  }
  .pc-name{font-family:var(--mono);font-size:13px;font-weight:600;color:var(--text);letter-spacing:.03em;}
  .pc-role{font-family:var(--mono);font-size:10.5px;color:var(--teal);letter-spacing:.04em;}

  /* ---------- stats bar ---------- */
  .stats{
    border-top:1px solid var(--border-soft);border-bottom:1px solid var(--border-soft);
    background:var(--bg-elev);
  }
  .stats .wrap{
    display:grid;grid-template-columns:repeat(4,1fr);
    padding:36px 32px;
  }
  .stat{text-align:left;padding:0 24px;border-left:1px solid var(--border-soft);}
  .stat:first-child{border-left:none;padding-left:0;}
  .stat .num{
    font-family:var(--display);font-size:34px;font-weight:800;color:var(--teal);
    display:flex;align-items:baseline;gap:2px;
  }
  .stat .label{font-size:12.5px;color:var(--text-dim);margin-top:6px;letter-spacing:.01em;}

  /* ---------- section headers ---------- */
  .section{padding:110px 0;}
  .eyebrow{
    font-family:var(--mono);font-size:12px;color:var(--teal);
    letter-spacing:.12em;text-transform:uppercase;margin-bottom:14px;
    display:flex;align-items:center;gap:10px;
  }
  .eyebrow::before{content:'';width:22px;height:1px;background:var(--teal);}
  .section-title{
    font-family:var(--display);font-size:clamp(26px,3vw,38px);
    font-weight:600;letter-spacing:-.01em;margin-bottom:16px;max-width:640px;
  }
  .section-sub{color:var(--text-dim);max-width:600px;font-size:15.5px;margin-bottom:56px;}

  /* ---------- expertise grid ---------- */
  .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
  .card{
    background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
    padding:26px 24px;transition:border-color .2s ease, transform .2s ease;
  }
  .card:hover{border-color:var(--teal);transform:translateY(-3px);}
  .card-icon{
    width:38px;height:38px;border-radius:8px;background:var(--teal-dim);
    display:flex;align-items:center;justify-content:center;color:var(--teal);margin-bottom:18px;
  }
  .card h3{font-family:var(--display);font-size:17px;font-weight:600;margin-bottom:12px;line-height:1.3;}
  .card ul li{
    font-size:13.5px;color:var(--text-dim);padding:5px 0 5px 16px;position:relative;
  }
  .card ul li::before{
    content:'';position:absolute;left:0;top:12px;width:6px;height:1px;background:var(--text-faint);
  }

  /* ---------- experience timeline ---------- */
  .timeline{position:relative;padding-left:36px;}
  .timeline::before{
    content:'';position:absolute;left:6px;top:6px;bottom:6px;width:1px;
    background:linear-gradient(to bottom, var(--teal), var(--border) 90%);
  }
  .tl-item{position:relative;padding-bottom:52px;}
  .tl-item:last-child{padding-bottom:0;}
  .tl-dot{
    position:absolute;left:-36px;top:4px;width:13px;height:13px;border-radius:50%;
    background:var(--bg);border:2px solid var(--teal);
  }
  .tl-item:not(:first-child) .tl-dot{border-color:var(--border);}
  .tl-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:10px;margin-bottom:6px;}
  .tl-role{font-family:var(--display);font-size:19px;font-weight:600;}
  .tl-date{font-family:var(--mono);font-size:12px;color:var(--teal);background:var(--teal-dim);padding:3px 9px;border-radius:5px;}
  .tl-org{color:var(--text-dim);font-size:14px;margin-bottom:14px;font-family:var(--mono);}
  .tl-bullets li{
    font-size:14.5px;color:var(--text-dim);padding:5px 0 5px 18px;position:relative;max-width:760px;
  }
  .tl-bullets li::before{content:'▸';position:absolute;left:0;color:var(--text-faint);font-size:12px;top:6px;}

  /* ---------- projects ---------- */
  .grid-projects{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
  .proj-card{
    background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
    padding:24px;display:flex;flex-direction:column;gap:14px;
    transition:border-color .2s ease, transform .2s ease;
  }
  .proj-card:hover{border-color:var(--amber);transform:translateY(-3px);}
  .proj-top{display:flex;justify-content:space-between;align-items:center;}
  .proj-year{font-family:var(--mono);font-size:11.5px;color:var(--text-faint);}
  .proj-metric{
    font-family:var(--mono);font-size:12px;color:var(--amber);background:var(--amber-dim);
    padding:3px 9px;border-radius:5px;font-weight:600;
  }
  .proj-card h3{font-family:var(--display);font-size:16.5px;font-weight:600;line-height:1.35;}
  .proj-card p{font-size:13.5px;color:var(--text-dim);}
  .proj-card p b{color:var(--text);font-weight:600;}

  /* ---------- certifications ---------- */
  .cert-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;}
  .cert-row{
    display:flex;align-items:center;gap:16px;
    background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
    padding:18px 20px;transition:border-color .2s ease;
  }
  .cert-row:hover{border-color:var(--teal);}
  .cert-badge{
    width:42px;height:42px;flex:none;border-radius:8px;border:1px solid var(--border);
    display:flex;align-items:center;justify-content:center;color:var(--teal);
    font-family:var(--mono);font-size:11px;font-weight:600;background:var(--bg-elev);
  }
  .cert-info b{display:block;font-size:14.5px;font-weight:600;margin-bottom:3px;}
  .cert-info span{font-size:12.5px;color:var(--text-faint);font-family:var(--mono);}

  /* ---------- tech stack ---------- */
  .stack-block{margin-bottom:26px;}
  .stack-cat{
    font-family:var(--mono);font-size:11.5px;color:var(--text-faint);text-transform:uppercase;
    letter-spacing:.08em;margin-bottom:12px;display:flex;align-items:center;gap:8px;
  }
  .stack-cat::before{content:'';width:6px;height:6px;background:var(--teal);border-radius:50%;}
  .tag-row{display:flex;flex-wrap:wrap;gap:8px;}
  .tag{
    font-family:var(--mono);font-size:12.5px;color:var(--text-dim);
    border:1px solid var(--border);padding:6px 12px;border-radius:6px;background:var(--surface);
    transition:border-color .15s, color .15s;
  }
  .tag:hover{border-color:var(--teal);color:var(--teal);}

  /* ---------- education ---------- */
  .grid-2{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
  .edu-card{
    background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:26px;
  }
  .edu-card .deg{font-family:var(--display);font-size:18px;font-weight:600;margin-bottom:6px;}
  .edu-card .school{color:var(--teal);font-family:var(--mono);font-size:13px;margin-bottom:4px;}
  .edu-card .when{color:var(--text-faint);font-size:12.5px;font-family:var(--mono);margin-bottom:12px;}
  .edu-card .detail{color:var(--text-dim);font-size:13.5px;}

  .lang-row{display:flex;gap:28px;margin-top:36px;flex-wrap:wrap;}
  .lang{font-family:var(--mono);font-size:13px;color:var(--text-dim);}
  .lang b{color:var(--text);}

  /* ---------- about / contact ---------- */
  .contact-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:56px;align-items:start;}
  .contact-grid p{color:var(--text-dim);font-size:15.5px;margin-bottom:16px;max-width:560px;}
  .contact-card{
    background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:28px;
  }
  .contact-row{
    display:flex;justify-content:space-between;align-items:center;
    padding:14px 0;border-bottom:1px solid var(--border-soft);
  }
  .contact-row:last-child{border-bottom:none;}
  .contact-row span.k{font-family:var(--mono);font-size:11.5px;color:var(--text-faint);text-transform:uppercase;letter-spacing:.06em;}
  .contact-row span.v{font-size:14px;font-weight:500;text-align:right;}
  .contact-row a.v{color:var(--teal);}

  footer{
    border-top:1px solid var(--border-soft);padding:32px 0;
  }
  footer .wrap{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;}
  footer p{font-family:var(--mono);font-size:12px;color:var(--text-faint);}

  /* ---------- reveal animation ---------- */
  .reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease, transform .6s ease;}
  .reveal.in{opacity:1;transform:translateY(0);}

  @media (prefers-reduced-motion: reduce){
    *{animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important;}
    html{scroll-behavior:auto;}
  }

  /* ---------- responsive ---------- */
  @media (max-width:980px){
    .hero{grid-template-columns:1fr;padding-top:140px;}
    .grid-3, .grid-projects{grid-template-columns:repeat(2,1fr);}
    .contact-grid{grid-template-columns:1fr;}
    .cert-list{grid-template-columns:1fr;}
  }
  @media (max-width:720px){
    .nav-links{display:none;}
    .nav-toggle{display:block;}
    .wrap{padding:0 20px;}
    nav{padding:14px 20px;gap:10px;}
    .brand-text span{display:none;}
    .nav-cta{padding:9px 12px;font-size:11px;}
    .brand-text b{font-size:13px;}
  }
  @media (max-width:400px){
    .nav-cta span.full{display:none;}
  }
    .stats .wrap{grid-template-columns:repeat(2,1fr);row-gap:24px;}
    .stat{border-left:none;padding-left:0;}
    .grid-3, .grid-projects, .grid-2{grid-template-columns:1fr;}
    .section{padding:76px 0;}
    .hero{padding:120px 0 64px;}
    .hero-meta{gap:18px;}
  }