:root{
    --paper: #ECEBE4;
    --paper-raised: #F6F5F0;
    --ink: #1A1D1F;
    --ink-soft: #5B5E62;
    --blueprint: #2B4C7E;
    --signal: #2F6B4C;
    --signal-bright: #79D6A6;
    --rule: rgba(26,29,31,0.14);
    --rule-strong: rgba(26,29,31,0.28);
    --terminal-bg: #14161A;
    --shadow: rgba(26,29,31,.12);
    --sidebar-w: 236px;
    --statusbar-h: 34px;
  }

  html[data-theme="dark"]{
    --paper: #15171A;
    --paper-raised: #1E2125;
    --ink: #EDECE6;
    --ink-soft: #9A9DA2;
    --blueprint: #7DA3D9;
    --signal: #5FC28E;
    --rule: rgba(237,236,230,0.13);
    --rule-strong: rgba(237,236,230,0.24);
    --shadow: rgba(0,0,0,.45);
  }

  body{transition:background-color .2s ease, color .2s ease;}

  /* ---------- App views ---------- */
  .app-view{min-height:100vh;}

  .home-btn{
    display:inline-flex; align-items:center; gap:.4rem;
    background:none; border:1px solid rgba(121,214,166,.4); color:var(--signal-bright);
    cursor:pointer; font-family:'IBM Plex Mono', monospace; font-size:11px; letter-spacing:.03em;
    padding:.22rem .6rem; border-radius:3px; line-height:1.3;
    transition:background .15s ease, border-color .15s ease;
  }
  .home-btn:hover, .home-btn:focus-visible{background:rgba(121,214,166,.14); border-color:var(--signal-bright);}

  /* ---------- Home / landing view ---------- */
  .home-shell{
    max-width:900px; margin:0 auto; padding:calc(var(--statusbar-h) + 3.4rem) 2.2rem 5rem;
    display:flex; flex-direction:column; gap:3.2rem;
  }
  .home-hero{
    position:relative; border:1px solid var(--rule-strong);
    padding:2.8rem 2.2rem; text-align:left;
  }
  .home-hero h1{
    font-family:'Fraunces', serif; font-weight:700; font-size:clamp(2.1rem, 5vw, 3rem);
    line-height:1.05; margin:0 0 .6rem; letter-spacing:-.02em;
  }
  .home-sub{
    color:var(--ink-soft); font-size:1.02rem; margin:0 0 2.2rem; max-width:52ch;
  }
  .picker-row{display:flex; gap:2.4rem; flex-wrap:wrap;}
  .picker-group{display:flex; flex-direction:column; gap:.6rem;}
  .picker-label{
    font-family:'IBM Plex Mono', monospace; font-size:11px; color:var(--blueprint);
    letter-spacing:.06em; text-transform:uppercase;
  }
  .picker-buttons{display:flex; gap:.6rem; flex-wrap:wrap;}
  .picker-buttons .lang-btn, .picker-buttons .theme-pick-btn{
    font-size:13px; padding:.55rem 1.1rem; border-radius:4px;
    border:1px solid var(--rule-strong); color:var(--ink-soft); background:var(--paper-raised);
  }
  .picker-buttons .lang-btn.active, .picker-buttons .theme-pick-btn.active{
    color:var(--paper-raised); background:var(--blueprint); border-color:var(--blueprint);
  }
  .picker-buttons .lang-btn:not(.active):hover, .picker-buttons .theme-pick-btn:not(.active):hover{
    border-color:var(--blueprint); color:var(--ink);
  }

  .home-pages .sub-label{margin-bottom:1rem;}
  .page-grid{
    display:grid; grid-template-columns:repeat(auto-fill, minmax(230px,1fr)); gap:1rem;
  }
  .page-card{
    appearance:none; -webkit-appearance:none; font-family:inherit; text-align:left;
    display:flex; flex-direction:column; gap:.5rem; width:100%;
    background:var(--paper-raised); border:1px solid var(--rule); border-left:3px solid var(--blueprint);
    padding:1.3rem 1.4rem; cursor:pointer;
    transition:transform .15s ease, box-shadow .15s ease, border-color .15s ease;
  }
  .page-card:hover{transform:translateY(-2px); box-shadow:0 8px 18px var(--shadow);}
  .page-card .page-num{font-family:'IBM Plex Mono', monospace; font-size:11px; color:var(--blueprint); letter-spacing:.05em;}
  .page-card .page-title{font-family:'Fraunces', serif; font-weight:600; font-size:1.12rem; color:var(--ink);}
  .page-card .page-desc{color:var(--ink-soft); font-size:.87rem; line-height:1.45;}
  .page-card.placeholder{border-left-style:dashed; border-left-color:var(--rule-strong);}
  .page-card.placeholder .page-num{color:var(--ink-soft);}
  .soon-badge{
    align-self:flex-start; font-family:'IBM Plex Mono', monospace; font-size:9.5px; letter-spacing:.05em;
    text-transform:uppercase; color:var(--ink-soft); border:1px dashed var(--rule-strong);
    padding:.2rem .5rem; border-radius:3px; margin-top:.2rem;
  }

  /* ---------- Placeholder page view ---------- */
  .placeholder-shell{
    max-width:700px; margin:0 auto; padding:calc(var(--statusbar-h) + 3.4rem) 2.2rem 5rem;
  }
  .placeholder-back{
    display:inline-flex; align-items:center; gap:.4rem; background:none; border:none; cursor:pointer;
    font-family:'IBM Plex Mono', monospace; font-size:12px; color:var(--blueprint); padding:0; margin-bottom:2.2rem;
  }
  .placeholder-back:hover{text-decoration:underline;}
  .placeholder-panel{
    border:1px dashed var(--rule-strong); padding:3rem 2rem; text-align:center;
  }
  .placeholder-panel .page-num{
    display:block; font-family:'IBM Plex Mono', monospace; font-size:11px; color:var(--ink-soft);
    letter-spacing:.05em; margin-bottom:1rem;
  }
  .placeholder-panel h2{
    font-family:'Fraunces', serif; font-weight:600; font-size:1.9rem; margin:0 0 .8rem;
  }
  .placeholder-panel p{color:var(--ink-soft); max-width:46ch; margin:0 auto 1.4rem;}

  @media (max-width:640px){
    .home-shell, .placeholder-shell{padding-left:1.2rem; padding-right:1.2rem;}
    .picker-row{gap:1.6rem;}
  }

  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  @media (prefers-reduced-motion: reduce){
    html{scroll-behavior:auto;}
    *{animation-duration:0.01ms !important; animation-iteration-count:1 !important; transition-duration:0.01ms !important; scroll-behavior:auto !important;}
  }

  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:'IBM Plex Sans', sans-serif;
    font-size:16px;
    line-height:1.55;
    -webkit-font-smoothing:antialiased;
  }

  a{color:inherit;}
  ::selection{background:var(--blueprint); color:var(--paper-raised);}

  :focus-visible{
    outline:2px solid var(--blueprint);
    outline-offset:3px;
  }

  .mono{font-family:'IBM Plex Mono', monospace;}
  .serif{font-family:'Fraunces', serif;}

  /* ---------- Status bar ---------- */
  .statusbar{
    position:fixed; top:0; left:0; right:0; height:var(--statusbar-h);
    background:var(--terminal-bg); color:var(--signal-bright);
    display:flex; align-items:center; gap:.6rem;
    padding:0 1rem; z-index:100;
    font-family:'IBM Plex Mono', monospace;
    font-size:11.5px; letter-spacing:.03em;
    overflow:hidden; white-space:nowrap;
  }
  .statusbar .dot{
    width:6px; height:6px; border-radius:50%; background:var(--signal-bright);
    flex:0 0 auto;
    animation:pulse 2.4s ease-in-out infinite;
  }
  @keyframes pulse{0%,100%{opacity:1;} 50%{opacity:.35;}}
  .statusbar .seg{opacity:.85;}
  .statusbar .sep{opacity:.4;}
  .status-right{margin-left:auto; display:flex; align-items:center; gap:.9rem; flex:0 0 auto;}
  .statusbar .uptime{opacity:.85;}

  .lang-toggle{display:flex; align-items:center; gap:.3rem; flex:0 0 auto;}
  .lang-btn{
    background:none; border:1px solid rgba(121,214,166,.35); color:var(--ink-soft);
    font-family:'IBM Plex Mono', monospace; font-size:10.5px; letter-spacing:.05em;
    padding:.15rem .45rem; border-radius:2px; cursor:pointer;
  }
  .lang-btn.active{color:var(--terminal-bg); background:var(--signal-bright); border-color:var(--signal-bright);}

  .theme-toggle{display:flex; align-items:center; flex:0 0 auto;}
  .theme-btn{
    background:none; border:1px solid rgba(121,214,166,.35); color:var(--ink-soft);
    width:22px; height:22px; display:inline-flex; align-items:center; justify-content:center;
    border-radius:2px; cursor:pointer; font-size:12px; line-height:1; padding:0;
  }
  .theme-btn:hover{color:var(--signal-bright); border-color:var(--signal-bright);}
  .lang-btn:not(.active):hover{color:var(--signal-bright); border-color:var(--signal-bright);}

  /* ---------- Layout shell ---------- */
  .shell{
    display:flex;
    padding-top:var(--statusbar-h);
    min-height:100vh;
  }

  /* ---------- Sidebar index ---------- */
  .index-nav{
    width:var(--sidebar-w);
    flex:0 0 auto;
    position:sticky;
    top:var(--statusbar-h);
    height:calc(100vh - var(--statusbar-h));
    border-right:1px solid var(--rule);
    padding:2.4rem 1.4rem;
    display:flex;
    flex-direction:column;
    justify-content:space-between;
  }
  .index-nav ol{list-style:none; margin:0; padding:0;}
  .index-top{display:flex; flex-direction:column;}
  .index-back{
    display:inline-flex; align-items:center; gap:.4rem; background:none; border:none;
    cursor:pointer; font-family:'IBM Plex Mono', monospace; font-size:11.5px; color:var(--ink-soft);
    padding:.3rem .5rem; margin:0 0 .9rem -.5rem; border-radius:2px;
    transition:color .15s ease, background .15s ease;
  }
  .index-back:hover, .index-back:focus-visible{color:var(--blueprint); background:var(--rule);}
  .index-nav li{margin-bottom:.35rem;}
  .index-nav a{
    display:flex; gap:.6rem; align-items:baseline;
    text-decoration:none; color:var(--ink-soft);
    font-family:'IBM Plex Mono', monospace;
    font-size:12.5px; letter-spacing:.02em;
    padding:.4rem .5rem; border-radius:2px;
    transition:color .15s ease, background .15s ease;
  }
  .index-nav a .n{color:var(--ink-soft); opacity:.6; font-variant-numeric:tabular-nums;}
  .index-nav a:hover{color:var(--ink); background:var(--rule);}
  .index-nav a.active{color:var(--blueprint); background:rgba(43,76,126,.08);}
  .index-nav a.active .n{color:var(--blueprint); opacity:1;}

  .index-foot{
    font-family:'IBM Plex Mono', monospace;
    font-size:10.5px; color:var(--ink-soft); line-height:1.7;
    border-top:1px solid var(--rule); padding-top:1rem;
  }

  /* ---------- Main ---------- */
  main{flex:1 1 auto; min-width:0;}
  .page{max-width:780px; margin:0 auto; padding:0 2.2rem 6rem;}

  section{
    padding-top:3.6rem;
    opacity:0; transform:translateY(14px);
    transition:opacity .6s ease, transform .6s ease;
  }
  section.is-visible{opacity:1; transform:none;}

  .sec-head{
    display:flex; justify-content:space-between; align-items:flex-end;
    border-bottom:1px solid var(--rule-strong);
    padding-bottom:.7rem; margin-bottom:1.8rem;
  }
  .sec-head .eyebrow{
    font-family:'IBM Plex Mono', monospace; font-size:12px;
    color:var(--blueprint); letter-spacing:.06em;
  }
  .sec-head h2{
    font-family:'Fraunces', serif; font-weight:600; font-size:1.9rem;
    margin:.15rem 0 0; letter-spacing:-.01em;
  }
  .sec-head .sheet{
    font-family:'IBM Plex Mono', monospace; font-size:11px;
    color:var(--ink-soft); text-align:right; white-space:nowrap;
  }

  .sub-label{
    font-family:'IBM Plex Mono', monospace; font-size:11px; color:var(--blueprint);
    letter-spacing:.06em; text-transform:uppercase; margin:0 0 .8rem;
  }

  /* ---------- Hero ---------- */
  .hero{padding-top:2.6rem; position:relative;}
  .hero-frame{
    position:relative;
    border:1px solid var(--rule-strong);
    padding:2.6rem 2rem 1.6rem;
    display:flex; gap:2.4rem; align-items:flex-start; flex-wrap:wrap;
  }
  .crosshair{position:absolute; width:16px; height:16px; pointer-events:none;}
  .crosshair::before, .crosshair::after{content:''; position:absolute; background:var(--blueprint);}
  .crosshair::before{width:100%; height:1px; top:50%;}
  .crosshair::after{height:100%; width:1px; left:50%;}
  .crosshair.tl{top:-8px; left:-8px;}
  .crosshair.tr{top:-8px; right:-8px;}
  .crosshair.bl{bottom:-8px; left:-8px;}
  .crosshair.br{bottom:-8px; right:-8px;}

  .hero-text{flex:1 1 340px; min-width:0;}
  .hero-eyebrow{
    font-family:'IBM Plex Mono', monospace; font-size:12px; color:var(--ink-soft);
    letter-spacing:.08em; text-transform:uppercase; margin:0 0 1.1rem;
  }
  .hero h1{
    font-family:'Fraunces', serif; font-weight:700; font-size:clamp(2.2rem, 5vw, 3.3rem);
    line-height:1.02; margin:0 0 .6rem; letter-spacing:-.02em;
  }
  .hero .role{
    font-family:'IBM Plex Mono', monospace; font-size:14.5px; color:var(--blueprint);
    margin:0 0 1.4rem;
  }
  .hero p.summary{
    max-width:56ch; color:var(--ink); font-size:1.02rem; margin:0 0 1.6rem;
  }
  .hero-annot{
    display:flex; gap:1.4rem; flex-wrap:wrap;
    border-top:1px solid var(--rule); padding-top:1rem; margin-top:1.4rem;
    font-family:'IBM Plex Mono', monospace; font-size:10.5px; color:var(--ink-soft);
    letter-spacing:.05em; text-transform:uppercase;
  }
  .hero-annot span b{color:var(--ink); font-weight:500;}

  /* ---------- Portrait ---------- */
  .portrait{
    flex:0 0 auto; width:168px; position:relative;
    align-self:flex-start;
  }
  .portrait-frame{
    position:relative; border:1px solid var(--rule-strong);
    background:var(--paper-raised); padding:6px;
  }
  .portrait-frame img{
    display:block; width:100%; aspect-ratio:3/4; object-fit:cover;
    filter:grayscale(.15) contrast(1.03);
  }
  .portrait-cap{
    font-family:'IBM Plex Mono', monospace; font-size:9.5px; color:var(--ink-soft);
    letter-spacing:.05em; text-transform:uppercase; margin-top:.5rem; text-align:center;
  }
  @media (max-width:520px){
    .hero-frame{flex-direction:column-reverse;}
    .portrait{width:132px;}
  }

  /* ---------- Engagements ---------- */
  .engagement{
    border:1px solid var(--rule); border-left:3px solid var(--blueprint);
    padding:1.4rem 1.5rem; margin-bottom:1.1rem; background:var(--paper-raised);
  }
  .engagement-top{display:flex; justify-content:space-between; align-items:flex-start; gap:1rem; flex-wrap:wrap; margin-bottom:.5rem;}
  .engagement-id{font-family:'IBM Plex Mono', monospace; font-size:11px; color:var(--blueprint); letter-spacing:.05em;}
  .engagement-dates{font-family:'IBM Plex Mono', monospace; font-size:11px; color:var(--ink-soft);}
  .engagement h3{font-family:'Fraunces', serif; font-size:1.28rem; font-weight:600; margin:.2rem 0 0;}
  .engagement .meta{font-family:'IBM Plex Mono', monospace; font-size:12px; color:var(--ink-soft); margin:.15rem 0 .8rem;}
  .engagement ul{margin:0 0 .8rem; padding-left:1.1rem; color:var(--ink);}
  .engagement li{margin-bottom:.35rem;}
  .engagement .civic{
    font-size:.85rem; color:var(--ink-soft); font-style:italic;
    border-top:1px dashed var(--rule); padding-top:.7rem; margin-top:.6rem;
  }
  .engagement .civic b{font-style:normal; color:var(--ink);}

  /* ---------- Capability matrix ---------- */
  .matrix{
    display:grid; grid-template-columns:repeat(auto-fill, minmax(150px,1fr));
    gap:1px; background:var(--rule-strong); border:1px solid var(--rule-strong);
    margin-bottom:2rem;
  }
  .cell{
    background:var(--paper-raised); padding:1.1rem .9rem; position:relative;
  }
  .cell::before{
    content:''; position:absolute; top:6px; left:6px; width:8px; height:8px;
    border-top:1px solid var(--ink-soft); border-left:1px solid var(--ink-soft); opacity:.5;
  }
  .cell .tag{font-family:'IBM Plex Mono', monospace; font-size:9.5px; letter-spacing:.08em; color:var(--signal); text-transform:uppercase; display:block; margin-bottom:.4rem;}
  .cell .name{font-family:'Fraunces', serif; font-weight:600; font-size:1.02rem;}

  .lang-row{
    display:grid; grid-template-columns:1fr 1fr; gap:1rem; align-items:baseline;
    padding:.7rem 0; border-bottom:1px solid var(--rule);
  }
  .lang-row .name{font-family:'Fraunces', serif; font-weight:600; font-size:1rem;}
  .lang-row .level{font-family:'IBM Plex Mono', monospace; font-size:12px; color:var(--ink-soft); text-align:right;}

  /* ---------- Credentials (ledger) ---------- */
  .ledger-group{margin-bottom:1.8rem;}
  .ledger-label{font-family:'IBM Plex Mono', monospace; font-size:11px; color:var(--blueprint); letter-spacing:.06em; text-transform:uppercase; margin-bottom:.6rem; display:block;}
  .ledger-row{
    display:grid; grid-template-columns:2.6rem 1.5fr 1.7fr auto;
    gap:1rem; align-items:baseline;
    padding:.85rem 0; border-bottom:1px solid var(--rule);
  }
  .ledger-row .idx{font-family:'IBM Plex Mono', monospace; font-size:11px; color:var(--ink-soft);}
  .ledger-row .name{font-family:'Fraunces', serif; font-weight:600; font-size:1.02rem;}
  .ledger-row .info{color:var(--ink-soft); font-size:.88rem; line-height:1.5;}
  .ledger-row .year{font-family:'IBM Plex Mono', monospace; font-size:12px; color:var(--ink-soft); white-space:nowrap;}

  /* ---------- Deployments (projects) ---------- */
  .deployments{display:grid; grid-template-columns:1fr 1fr; gap:1.1rem;}
  @media (max-width:640px){.deployments{grid-template-columns:1fr;}}
  .deployment{border:1px solid var(--rule); padding:1.3rem; background:var(--paper-raised); display:flex; flex-direction:column; gap:.6rem;}
  .deployment .tag{font-family:'IBM Plex Mono', monospace; font-size:10.5px; color:var(--signal); letter-spacing:.05em; text-transform:uppercase;}
  .deployment h3{font-family:'Fraunces', serif; font-size:1.15rem; font-weight:600; margin:0;}
  .deployment p{margin:0; color:var(--ink-soft); font-size:.94rem;}

  /* ---------- Contact / terminal ---------- */
  .terminal{
    background:var(--terminal-bg); color:var(--signal-bright);
    border:1px solid var(--rule-strong);
    font-family:'IBM Plex Mono', monospace; font-size:13.5px;
    padding:1.6rem 1.7rem; border-radius:3px; line-height:1.9;
  }
  .terminal .prompt{color:#8FA6C4;}
  .terminal .out{color:var(--signal-bright); opacity:.92;}
  .terminal a{color:var(--signal-bright); text-decoration:none; border-bottom:1px solid transparent; transition:border-color .15s ease, opacity .15s ease;}
  .terminal a:hover, .terminal a:focus-visible{border-bottom-color:rgba(121,214,166,.55);}
  .terminal a::after{content:'\2197'; opacity:0; margin-left:.3em; font-size:.85em; transition:opacity .15s ease;}
  .terminal a:hover::after, .terminal a:focus-visible::after{opacity:.75;}
  .terminal .cursor{display:inline-block; width:7px; height:1.1em; background:var(--signal-bright); vertical-align:text-bottom; animation:blink 1.1s step-end infinite;}
  @keyframes blink{0%,49%{opacity:1;} 50%,100%{opacity:0;}}

  .hobbies{margin-top:2.2rem;}
  .hobby-chips{display:flex; flex-wrap:wrap; gap:.6rem;}
  .chip{
    display:inline-flex; align-items:center; gap:.5rem;
    background:var(--paper-raised); border:1px solid var(--rule-strong);
    border-radius:999px; padding:.5rem 1rem .5rem .8rem;
    font-family:'Fraunces', serif; font-weight:600; font-size:.95rem; color:var(--ink);
    transition:transform .15s ease, box-shadow .15s ease, border-color .15s ease;
  }
  .chip::before{
    content:''; width:7px; height:7px; border-radius:50%; background:var(--signal);
    flex:0 0 auto;
  }
  .chip:hover{
    transform:translateY(-2px); border-color:var(--blueprint);
    box-shadow:0 6px 14px var(--shadow);
  }
  a.chip{text-decoration:none; cursor:pointer;}
  .chip-link::after{
    content:'\2197'; opacity:0; margin-left:.35em; font-size:.8em; color:var(--blueprint);
    transition:opacity .15s ease;
  }
  .chip-link:hover::after{opacity:.85;}
  .chip-sub{
    font-family:'IBM Plex Mono', monospace; font-size:.68rem; color:var(--ink-soft);
    text-decoration:none; border-bottom:1px dotted transparent; margin-left:.15rem;
    transition:border-color .15s ease, color .15s ease;
  }
  .chip-sub:hover, .chip-sub:focus-visible{color:var(--blueprint); border-bottom-color:var(--blueprint);}
  .word-link{
    color:inherit; text-decoration:none; border-bottom:1px solid transparent;
    transition:border-color .15s ease;
  }
  .word-link:hover, .word-link:focus-visible{border-bottom-color:var(--blueprint);}

  footer.page-foot{
    max-width:780px; margin:3rem auto 0; padding:1.6rem 2.2rem 0;
    border-top:1px solid var(--rule); font-family:'IBM Plex Mono', monospace;
    font-size:10.5px; color:var(--ink-soft); display:flex; justify-content:space-between;
  }

  /* ---------- Mobile ---------- */
  @media (max-width:860px){
    .index-nav{
      position:fixed; top:var(--statusbar-h); left:0; right:0; height:auto;
      width:100%; flex-direction:row; padding:.6rem .8rem; overflow-x:auto;
      background:var(--paper); border-right:none; border-bottom:1px solid var(--rule);
      z-index:90; justify-content:flex-start;
    }
    .index-nav ol{display:flex; gap:.2rem;}
    .index-nav li{margin-bottom:0;}
    .index-top{flex-direction:row; align-items:center; gap:.8rem;}
    .index-back{margin:0; white-space:nowrap;}
    .index-foot{display:none;}
    .shell{padding-top:calc(var(--statusbar-h) + 46px);}
    .page{padding:0 1.2rem 4rem;}
    .deployments{grid-template-columns:1fr;}
    .ledger-row{grid-template-columns:2rem 1fr; row-gap:.2rem;}
    .ledger-row .info, .ledger-row .year{grid-column:2;}
    .statusbar{gap:.4rem; font-size:10.5px;}
    .status-right{gap:.5rem;}
  }

  /* ---------- Multi-page nav link resets (anchors replacing former JS view buttons) ---------- */
  a.home-btn, a.index-back, a.placeholder-back, a.page-card{
    text-decoration:none;
  }