:root{color-scheme:light}
:root{
    --ink:#0A1A30;
    --ink-2:#44586F;
    --muted:#7D8CA1;
    --blue:#1657D0;
    --blue-700:#0E3B94;
    --blue-100:#E6EEFC;
    --blue-50:#F2F7FE;
    --white:#FFFFFF;
    --ground:#F6F9FE;
    --line:#DDE7F5;
    --line-strong:#C6D6EE;
    --good:#0E8A5F;
    --warn:#B26A00;
    --shadow:0 1px 2px rgba(10,26,48,.05), 0 8px 24px rgba(10,26,48,.06);
    --shadow-lift:0 2px 4px rgba(10,26,48,.06), 0 18px 48px rgba(10,26,48,.10);
    --r-s:8px; --r-m:14px; --r-l:22px;
    --sans:"IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
    --display:"Sora", "IBM Plex Sans", system-ui, sans-serif;
  }
  *{box-sizing:border-box}
  body{
    margin:0; background:var(--white); color:var(--ink-2);
    font-family:var(--sans); font-size:16px; line-height:1.65;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4{font-family:var(--display); color:var(--ink); margin:0; text-wrap:balance; line-height:1.15; letter-spacing:-.02em}
  h1{font-size:clamp(2.1rem,5.2vw,3.5rem); font-weight:700; letter-spacing:-.03em}
  h2{font-size:clamp(1.5rem,3.2vw,2.1rem); font-weight:600}
  h3{font-size:1.12rem; font-weight:600; letter-spacing:-.01em}
  p{margin:0}
  a{color:var(--blue); text-decoration:none}
  a:hover{text-decoration:underline}
  img{max-width:100%}
  :focus-visible{outline:2px solid var(--blue); outline-offset:3px; border-radius:4px}
  .wrap{max-width:1140px; margin-inline:auto; padding-inline:20px}
  .eyebrow{font-size:.86rem; font-weight:600; letter-spacing:.01em; color:var(--blue)}
  .lede{font-size:1.06rem; color:var(--ink-2); max-width:64ch}
  .muted{color:var(--muted)}

  /* ---------- header ---------- */
  header.site{
    position:sticky; top:env(safe-area-inset-top, 0px); z-index:40;
    background:rgba(255,255,255,.88); backdrop-filter:saturate(1.4) blur(10px);
    border-bottom:1px solid var(--line);
  }
  .nav{display:flex; align-items:center; gap:24px; height:74px}
  .brand{
    display:flex; align-items:center; gap:10px; font-family:var(--display);
    font-weight:600; color:var(--ink); letter-spacing:-.01em;
    height:100%; min-width:0; flex:0 1 auto; overflow:hidden;
  }
  .brand:hover{text-decoration:none}
  .mark{
    width:30px; height:30px; border-radius:9px; display:grid; place-items:center;
    background:linear-gradient(150deg,var(--blue),var(--blue-700));
    color:#fff; font-family:var(--display); font-size:.82rem; font-weight:700; letter-spacing:0;
  }
  .brand-logo{
    display:block; height:54px; width:auto;
    max-width:260px; object-fit:contain; object-position:left center;
    flex:0 0 auto;
  }
  .nav-links{display:flex; gap:22px; margin-left:auto; align-items:center}
  .nav-links a{color:var(--ink-2); font-size:.93rem; font-weight:500}
  .nav-links a:hover{color:var(--blue); text-decoration:none}
  .btn{
    display:inline-flex; align-items:center; gap:8px; border:0; cursor:pointer;
    font-family:var(--sans); font-size:.93rem; font-weight:500;
    padding:10px 18px; border-radius:999px; transition:.16s ease;
  }
  .btn-primary{background:var(--blue); color:#fff; box-shadow:0 6px 16px rgba(22,87,208,.22)}
  .btn-primary:hover{background:var(--blue-700); text-decoration:none}
  .btn-ghost{background:var(--white); color:var(--ink); border:1px solid var(--line-strong)}
  .btn-ghost:hover{border-color:var(--blue); color:var(--blue); text-decoration:none}

  /* ---------- hero ---------- */
  .hero{
    position:relative; overflow:hidden;
    background:linear-gradient(180deg,var(--blue-50) 0%, #FBFDFF 62%, var(--white) 100%);
    border-bottom:1px solid var(--line);
  }
  .hero-grid{display:grid; grid-template-columns:1.08fr .92fr; gap:40px; align-items:end; padding-top:60px}
  .hero-copy{padding-bottom:74px; display:flex; flex-direction:column; gap:20px; align-items:flex-start}
  .hero h1 .accent{
    background:linear-gradient(92deg,var(--blue) 10%, var(--blue-700));
    -webkit-background-clip:text; background-clip:text; color:transparent;
  }
  .hero-actions{display:flex; gap:12px; flex-wrap:wrap}
  .facts{display:flex; gap:28px; flex-wrap:wrap; padding-top:8px; border-top:1px solid var(--line); width:100%}
  .fact{padding-top:14px}
  .fact b{display:block; font-family:var(--display); font-size:1.22rem; color:var(--ink); font-weight:600}
  .fact span{font-size:.85rem; color:var(--muted)}
  .hero-photo{position:relative; align-self:end}
  .halo{
    position:absolute; inset:auto -12% 0 -6%; height:82%; border-radius:50% 50% 0 0;
    background:radial-gradient(60% 70% at 50% 100%, rgba(22,87,208,.16), rgba(22,87,208,0) 70%);
  }
  .photo-frame{
    position:relative; aspect-ratio:1/1.16; max-width:100%;
    border-radius:230px 230px 0 0; overflow:hidden;
    background:linear-gradient(170deg,#DCE8FB, #C9DBF8);
    border:1px solid var(--line-strong); border-bottom:0;
  }
  .photo-frame svg{display:block; width:100%; height:100%}
  .photo-note{
    position:absolute; left:50%; bottom:18px; transform:translateX(-50%);
    font-size:.78rem; color:var(--blue-700); background:rgba(255,255,255,.88);
    border:1px dashed var(--line-strong); padding:5px 14px; border-radius:999px; white-space:nowrap;
  }
  .pill-status{
    display:inline-flex; align-items:center; gap:8px; background:var(--white);
    border:1px solid var(--line); border-radius:999px; padding:6px 14px 6px 10px;
    font-size:.86rem; color:var(--ink-2); box-shadow:var(--shadow);
  }
  .dot{width:7px; height:7px; border-radius:50%; background:var(--good)}

  /* ---------- mode switch ---------- */
  .switchbar{position:sticky; top:calc(74px + env(safe-area-inset-top, 0px)); z-index:30; background:var(--white); border-bottom:1px solid var(--line)}
  .switch-inner{display:flex; justify-content:center; padding-block:14px}
  .segmented{display:inline-flex; background:var(--ground); border:1px solid var(--line); border-radius:999px; padding:5px; gap:5px; max-width:100%; flex-wrap:wrap; justify-content:center}
  .seg{
    border:0; background:transparent; cursor:pointer; color:var(--ink-2);
    font-family:var(--sans); font-size:.95rem; font-weight:500; padding:10px 40px; border-radius:999px; transition:.16s;
  }
  .seg:hover{color:var(--ink)}
  .seg[aria-selected="true"]{background:var(--blue); color:#fff; box-shadow:0 4px 12px rgba(22,87,208,.24)}

  /* ---------- sections ---------- */
  section.band{padding-block:72px; border-bottom:1px solid var(--line); position:relative}
  section.band.tint{background:var(--blue-50)}
  section.band > .wrap{position:relative; z-index:1}

  /* Faint technical watermark: grid paper + blueprint dots.
     Sits behind the content at very low opacity. */
  section.band.grid-bg::before{
    content:""; position:absolute; inset:0; pointer-events:none;
    background-image:
      linear-gradient(to right, rgba(22,87,208,.055) 1px, transparent 1px),
      linear-gradient(to bottom, rgba(22,87,208,.055) 1px, transparent 1px),
      radial-gradient(circle, rgba(22,87,208,.10) 1.25px, transparent 1.25px);
    background-size:56px 56px, 56px 56px, 56px 56px;
    background-position:0 0, 0 0, 28px 28px;
    -webkit-mask-image:radial-gradient(ellipse 78% 62% at 50% 46%, #000 38%, transparent 100%);
    mask-image:radial-gradient(ellipse 78% 62% at 50% 46%, #000 38%, transparent 100%);
  }

  /* Deep blue gradient section — content flips to light text. */
  section.band.deep{
    background:linear-gradient(145deg,#0C1E3A 0%, var(--blue-700) 52%, #1A62E0 100%);
    border-bottom-color:rgba(255,255,255,.10);
    color:#C6D9F5;
  }
  section.band.deep::before{
    content:""; position:absolute; inset:0; pointer-events:none;
    background-image:
      linear-gradient(to right, rgba(255,255,255,.05) 1px, transparent 1px),
      linear-gradient(to bottom, rgba(255,255,255,.05) 1px, transparent 1px);
    background-size:56px 56px;
    -webkit-mask-image:radial-gradient(ellipse 80% 70% at 50% 50%, #000 30%, transparent 100%);
    mask-image:radial-gradient(ellipse 80% 70% at 50% 50%, #000 30%, transparent 100%);
  }
  section.band.deep h2, section.band.deep h3, section.band.deep h4,
  section.band.deep .statement{color:#fff}
  section.band.deep .eyebrow{color:#8FB6F2}
  section.band.deep .lede, section.band.deep p, section.band.deep li{color:#C6D9F5}
  section.band.deep .muted, section.band.deep .tl-org{color:#9FBCE8}
  section.band.deep .num, section.band.deep .yr,
  section.band.deep .n, section.band.deep .tl-when{color:#8FB6F2}
  section.band.deep a{color:#fff}

  /* Cards and dividers, restated for a dark ground. */
  section.band.deep .educard,
  section.band.deep .panelcard,
  section.band.deep .proj,
  section.band.deep .skillbox{
    background:rgba(255,255,255,.07); border-color:rgba(255,255,255,.15);
    backdrop-filter:blur(6px);
  }
  section.band.deep .panelcard{box-shadow:0 8px 28px rgba(0,0,0,.18)}
  section.band.deep .skillbox h4{color:#fff}
  section.band.deep .skillbox ul{color:#C6D9F5}
  section.band.deep .stages{
    background:rgba(255,255,255,.07); border-color:rgba(255,255,255,.15);
    backdrop-filter:blur(6px);
  }
  section.band.deep .stage{border-right-color:rgba(255,255,255,.15)}
  section.band.deep .stage p, section.band.deep .stage h3{color:#DCE8FB}
  section.band.deep .stage h3{color:#fff}
  section.band.deep .tl-row{border-top-color:rgba(255,255,255,.15)}
  section.band.deep .step{border-left-color:rgba(255,255,255,.28)}
  section.band.deep .chip,
  section.band.deep .tag{
    background:rgba(255,255,255,.10); border-color:rgba(255,255,255,.18); color:#DCE8FB;
  }
  section.band.deep .icn{background:rgba(255,255,255,.14); color:#fff}
  section.band.deep .btn-ghost{
    background:rgba(255,255,255,.10); color:#fff; border-color:rgba(255,255,255,.30);
  }
  section.band.deep .btn-ghost:hover{background:rgba(255,255,255,.18); border-color:#fff}
  .sec-head{display:flex; align-items:flex-end; justify-content:space-between; gap:24px; margin-bottom:34px; flex-wrap:wrap}
  .sec-head > div{display:flex; flex-direction:column; gap:8px}

  .statement{font-family:var(--display); font-size:clamp(1.3rem,2.6vw,1.72rem); line-height:1.4; color:var(--ink); font-weight:500; letter-spacing:-.02em; max-width:32ch}
  .statement-grid{display:grid; grid-template-columns:1fr 1fr; gap:48px; align-items:start}
  .statement-side{display:flex; flex-direction:column; gap:16px; padding-top:6px}

  .quad{display:grid; grid-template-columns:1fr 1fr; gap:22px}
  .panelcard{
    background:var(--white); border:1px solid var(--line); border-radius:var(--r-l);
    padding:28px; display:flex; flex-direction:column; gap:12px; box-shadow:var(--shadow);
  }
  .panelcard .kicker{display:flex; align-items:center; gap:10px}
  .icn{width:34px; height:34px; border-radius:10px; display:grid; place-items:center; background:var(--blue-100); color:var(--blue-700); flex:none}
  .icn svg{width:18px; height:18px}
  .panelcard p{font-size:.96rem}
  .taglist{display:flex; flex-wrap:wrap; gap:8px; margin-top:auto; padding-top:8px}
  .tag{font-size:.82rem; color:var(--blue-700); background:var(--blue-50); border:1px solid var(--blue-100); padding:4px 11px; border-radius:7px}

  /* stages */
  .stages{display:grid; grid-template-columns:repeat(4,1fr); border:1px solid var(--line); border-radius:var(--r-l); overflow:hidden; background:var(--white)}
  .stage{padding:26px 24px; border-right:1px solid var(--line); display:flex; flex-direction:column; gap:8px}
  .stage:last-child{border-right:0}
  .stage .num{font-size:.82rem; font-weight:600; color:var(--blue)}
  .stage p{font-size:.94rem}

  /* work grid */
  .work{display:grid; grid-template-columns:repeat(3,1fr); gap:22px}
  .proj{display:flex; flex-direction:column; background:var(--white); border:1px solid var(--line); border-radius:var(--r-l); overflow:hidden; transition:.18s ease}
  .proj:hover{box-shadow:var(--shadow-lift); transform:translateY(-2px); border-color:var(--line-strong)}
  .thumb{aspect-ratio:16/10; position:relative; display:grid; place-items:center; border-bottom:1px solid var(--line)}
  .thumb .label{font-size:.82rem; color:rgba(255,255,255,.82)}
  .t1{background:linear-gradient(135deg,#1657D0,#0E3B94)}
  .t2{background:linear-gradient(135deg,#2E6FE0,#1A4FB8)}
  .t3{background:linear-gradient(135deg,#0E3B94,#123A72)}
  .t4{background:linear-gradient(135deg,#4A86EA,#1657D0)}
  .t5{background:linear-gradient(135deg,#2C63C9,#0B2F79)}
  .t6{background:linear-gradient(135deg,#6C9BF0,#2E6FE0)}
  .proj-body{padding:22px 24px 24px; display:flex; flex-direction:column; gap:10px; flex:1}
  .proj-meta{display:flex; gap:10px; align-items:center; font-size:.82rem; color:var(--muted); flex-wrap:wrap}
  .chip{font-size:.78rem; padding:3px 10px; border-radius:6px; background:var(--ground); border:1px solid var(--line); color:var(--ink-2)}
  .proj-body p{font-size:.95rem}
  .proj-link{margin-top:auto; padding-top:12px; font-size:.92rem; font-weight:500}

  /* timeline */
  .timeline{display:flex; flex-direction:column}
  .tl-row{display:grid; grid-template-columns:132px 1fr; gap:28px; padding-block:26px; border-top:1px solid var(--line)}
  .tl-row:first-child{border-top:0; padding-top:0}
  .tl-when{font-size:.92rem; font-weight:600; color:var(--blue-700); padding-top:2px}
  .tl-what h3{margin-bottom:4px}
  .tl-org{font-size:.9rem; color:var(--muted); margin-bottom:10px}
  .tl-what ul{margin:8px 0 0; padding-left:18px; display:flex; flex-direction:column; gap:6px}

  /* skills */
  .skillgrid{display:grid; grid-template-columns:repeat(3,1fr); gap:18px}
  .skillbox{background:var(--white); border:1px solid var(--line); border-radius:var(--r-m); padding:22px}
  .skillbox h4{font-size:.95rem; font-weight:600; color:var(--ink); margin-bottom:12px}
  .skillbox ul{margin:0; padding:0; list-style:none; display:flex; flex-direction:column; gap:7px; font-size:.94rem; color:var(--ink-2)}

  /* steps */
  .steps{display:grid; grid-template-columns:repeat(3,1fr); gap:20px}
  .step{border-left:2px solid var(--blue-100); padding-left:18px}
  .step .n{font-size:.84rem; font-weight:600; color:var(--blue)}
  .step h3{margin:6px 0 6px}

  /* education */
  .edu{display:grid; grid-template-columns:1fr 1fr; gap:22px}
  .educard{background:var(--white); border:1px solid var(--line); border-radius:var(--r-l); padding:28px; display:flex; flex-direction:column; gap:8px}
  .educard .yr{font-size:.86rem; font-weight:600; color:var(--blue)}
  .courses{display:flex; flex-wrap:wrap; gap:8px; margin-top:6px}

  .beyond{display:grid; grid-template-columns:repeat(3,1fr); gap:22px}
  .beyond h3{font-size:1rem}
  .beyond .b-item{display:flex; flex-direction:column; gap:8px}

  /* contact */
  .contact{display:grid; grid-template-columns:1fr 1fr; gap:44px; align-items:start}
  .contact-list{display:flex; flex-direction:column; gap:2px}
  .crow{display:flex; justify-content:space-between; gap:20px; padding-block:14px; border-bottom:1px solid var(--line); font-size:.96rem}
  .crow span:first-child{color:var(--muted); font-size:.88rem}
  footer.site{padding-block:26px; background:var(--white); border-top:1px solid var(--line)}
  footer.site .fwrap{display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap; font-size:.9rem; color:var(--muted)}

  @media (max-width:1000px){
    .work{grid-template-columns:repeat(2,1fr)}
    .stages{grid-template-columns:1fr 1fr}
    .stage:nth-child(2){border-right:0}
    .stage:nth-child(1),.stage:nth-child(2){border-bottom:1px solid var(--line)}
    .deep .stage:nth-child(1),.deep .stage:nth-child(2){border-bottom-color:rgba(255,255,255,.15)}
  }
  @media (max-width:900px){
    .hero-grid{grid-template-columns:1fr; gap:0; padding-top:44px}
    .hero-copy{padding-bottom:40px}
    .hero-photo{max-width:340px; margin-inline:auto; width:100%}
    .quad,.contact,.a-cols,.row2,.statement-grid,.edu{grid-template-columns:1fr}
    .statement-grid{gap:24px}
    .skillgrid,.steps,.beyond{grid-template-columns:1fr 1fr}
    .tl-row{grid-template-columns:1fr; gap:8px}
    .nav-links a:not(.btn){display:none}
    .seg{padding:10px 22px}
  }
  @media (max-width:640px){
    .work,.stages{grid-template-columns:1fr}
    .stage{border-right:0; border-bottom:1px solid var(--line)}
    .deep .stage{border-bottom-color:rgba(255,255,255,.15)}
    .stage:last-child{border-bottom:0}
    .skillgrid,.steps,.beyond{grid-template-columns:1fr}
    section.band{padding-block:52px}
    .seg{padding:9px 16px; font-size:.9rem}
    .brand-logo{height:40px; max-width:165px}
  }
  @media (prefers-reduced-motion:reduce){*{transition:none !important}}

  /* ---------- flash + forms ---------- */
  .flash{
    background:#E6F5EE; border:1px solid #B7E3CE; color:#0E8A5F;
    border-radius:var(--r-m); padding:14px 18px; font-size:.95rem;
  }
  .form-grid{display:grid; gap:14px; max-width:520px}
  .field-row{display:flex; flex-direction:column; gap:6px}
  .field-row label{font-size:.88rem; font-weight:500; color:var(--ink)}
  .field-row input, .field-row textarea{
    font-family:var(--sans); font-size:.96rem; color:var(--ink); background:var(--white);
    border:1px solid var(--line-strong); border-radius:var(--r-s); padding:11px 13px; width:100%;
  }
  .field-row textarea{min-height:130px; resize:vertical}
  .field-row input:focus, .field-row textarea:focus{outline:2px solid var(--blue); outline-offset:1px; border-color:var(--blue)}
  .field-error{font-size:.85rem; color:#B3261E}
  .honeypot{position:absolute; left:-9999px; width:1px; height:1px; overflow:hidden}

  /* ---------- article pages ---------- */
  .article{max-width:72ch; display:flex; flex-direction:column; gap:20px}
  .article h2{font-size:1.5rem; margin-top:14px}
  .article h3{margin-top:10px}
  .article p{font-size:1.02rem}
  .article ul, .article ol{margin:0; padding-left:20px; display:flex; flex-direction:column; gap:8px}
  .article img{border-radius:var(--r-m); border:1px solid var(--line)}
  .article a{text-decoration:underline}
  .cover{border-radius:var(--r-l); border:1px solid var(--line); overflow:hidden; margin-bottom:8px}
  .cover img{display:block; width:100%; height:auto}
  .backlink{font-size:.92rem; font-weight:500}
  .thumb img{position:absolute; inset:0; width:100%; height:100%; object-fit:cover}
  .photo-frame img{display:block; width:100%; height:100%; object-fit:cover}
  .page-head{display:flex; flex-direction:column; gap:12px; max-width:70ch}