:root{
    --ink:#1B1B1A;
    --paper:#F5F4F0;
    --paper-2:#ECEAE3;
    --charcoal:#1B1B1A;
    --charcoal-2:#242422;
    --stone:#8C8A83;
    --stone-light:#B9B6AC;
    --line:#33322E;
    --line-light:#DDDAD0;
    --cobalt:#2F5CFF;
    --cobalt-dim:#1F3FB0;
    --white:#F5F4F0;
    --maxw:1120px;
  }

  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:'IBM Plex Sans', sans-serif;
    font-size:16px;
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,.display{
    font-family:'Space Grotesk', sans-serif;
    font-weight:600;
    letter-spacing:-0.01em;
    margin:0;
  }
  a{color:inherit;}
  img{max-width:100%; display:block;}
  .wrap{max-width:var(--maxw); margin:0 auto; padding:0 32px;}
  section{position:relative;}

  /* ===== Nav ===== */
  .nav{
    position:fixed; top:0; left:0; right:0; z-index:50;
    display:flex; align-items:center; justify-content:space-between;
    padding:22px 32px;
    mix-blend-mode:difference;
    color:#fff;
    font-size:14px;
    pointer-events:none;
  }
  .nav .mark{display:flex; align-items:center; gap:8px; font-family:'Space Grotesk',sans-serif; font-weight:600; pointer-events:auto;}
  .nav .dot{width:7px; height:7px; border-radius:50%; background:var(--cobalt); flex:none;}
  .nav .links{display:flex; gap:28px; pointer-events:auto;}
  .nav .links a{text-decoration:none; opacity:.85;}
  .nav .links a:hover{opacity:1;}
  @media (max-width:640px){ .nav .links{display:none;} }

  /* ===== Hero ===== */
  .hero{
    background:var(--charcoal);
    color:var(--white);
    padding:168px 0 96px;
    overflow:hidden;
  }
  .hero .wrap{position:relative;}
  .hero-kicker{
    display:flex; align-items:center; gap:10px;
    color:var(--stone-light);
    font-size:14px;
    margin-bottom:28px;
  }
  .hero-kicker .dot{width:8px; height:8px; border-radius:50%; background:var(--cobalt); flex:none;}
  .hero h1{
    font-size:clamp(48px, 8vw, 96px);
    line-height:0.98;
    color:var(--white);
  }
  .hero h1 span{color:var(--stone);}
  .hero-sub{
    display:grid;
    grid-template-columns:1.1fr 0.9fr;
    gap:64px;
    margin-top:44px;
    align-items:start;
  }
  .hero-role{
    font-family:'Space Grotesk', sans-serif;
    font-size:20px;
    color:var(--stone-light);
  }
  .hero-desc{
    color:var(--stone-light);
    font-size:16.5px;
    max-width:46ch;
  }
  @media (max-width:760px){
    .hero-sub{grid-template-columns:1fr; gap:20px;}
    .hero{padding:132px 0 72px;}
  }

  .hero-stats{
    display:flex;
    gap:0;
    margin-top:72px;
    border-top:1px solid var(--line);
    padding-top:0;
  }
  .hero-stats .stat{
    flex:1;
    padding:22px 24px 0 0;
    border-right:1px solid var(--line);
  }
  .hero-stats .stat:last-child{border-right:none;}
  .hero-stats .stat .num{
    font-family:'Space Grotesk',sans-serif;
    font-size:30px;
    color:var(--white);
  }
  .hero-stats .stat .label{
    color:var(--stone);
    font-size:13.5px;
    margin-top:6px;
    max-width:22ch;
  }
  @media (max-width:760px){
    .hero-stats{flex-direction:column;}
    .hero-stats .stat{border-right:none; border-bottom:1px solid var(--line); padding:18px 0;}
  }

  /* ===== Section headers ===== */
  .section-head{
    display:grid;
    grid-template-columns:220px 1fr;
    gap:40px;
    margin-bottom:56px;
    align-items:end;
  }
  .section-head .label{
    font-size:14px;
    color:var(--stone);
  }
  .section-head h2{
    font-size:clamp(30px,4vw,44px);
    line-height:1.05;
  }
  @media (max-width:700px){
    .section-head{grid-template-columns:1fr; gap:12px;}
  }

  /* ===== About ===== */
  .about{
    background:var(--paper);
    padding:112px 0;
  }
  .about-grid{
    display:grid;
    grid-template-columns:220px 1fr;
    gap:40px;
  }
  .about-body p{
    font-size:19px;
    max-width:62ch;
    margin:0 0 20px;
    color:#2b2a27;
  }
  .about-body p.muted{
    color:var(--stone);
    font-size:16px;
  }
  @media (max-width:700px){
    .about-grid{grid-template-columns:1fr;}
  }

  /* ===== Case study ===== */
  .case{
    background:var(--charcoal);
    color:var(--white);
    padding:112px 0 128px;
  }
  .case-meta{
    display:flex; flex-wrap:wrap; gap:32px;
    margin:36px 0 72px;
    padding-top:28px;
    border-top:1px solid var(--line);
  }
  .case-meta .m{min-width:140px;}
  .case-meta .m .k{font-size:12.5px; color:var(--stone); margin-bottom:6px;}
  .case-meta .m .v{font-family:'Space Grotesk',sans-serif; font-size:16px; color:var(--white);}

  .case-title{
    font-size:clamp(34px,5vw,56px);
    line-height:1.05;
    max-width:16ch;
  }
  .case-lede{
    color:var(--stone-light);
    font-size:18px;
    max-width:58ch;
    margin-top:24px;
  }

  .csi-list{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:40px;
    margin-bottom:96px;
  }
  .csi-list .item{
    border-top:1px solid var(--line);
    padding-top:22px;
  }
  .csi-list .item .idx{
    font-family:'Space Grotesk',sans-serif;
    color:var(--cobalt);
    font-size:14px;
    margin-bottom:14px;
  }
  .csi-list .item h3{
    font-size:20px;
    color:var(--white);
    margin-bottom:10px;
  }
  .csi-list .item p{
    color:var(--stone-light);
    font-size:15px;
    margin:0;
  }
  @media (max-width:800px){
    .csi-list{grid-template-columns:1fr; gap:32px;}
  }

  .case-visual{margin-bottom:88px;}
  .case-visual .frame{
    background:var(--charcoal-2);
    border:1px solid var(--line);
    padding:28px;
  }
  .case-visual figcaption{
    margin-top:18px;
    font-size:14px;
    color:var(--stone);
    display:flex;
    justify-content:space-between;
    gap:20px;
  }
  .case-visual figcaption b{color:var(--stone-light); font-weight:500;}

  .visual-pair{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:24px;
  }
  @media (max-width:700px){
    .visual-pair{grid-template-columns:1fr;}
  }

  .case-approach{
    display:grid;
    grid-template-columns:1fr 1fr 1fr;
    gap:36px;
    padding-top:40px;
    border-top:1px solid var(--line);
  }
  .case-approach h4{
    font-size:17px;
    color:var(--white);
    margin-bottom:12px;
  }
  .case-approach p{
    color:var(--stone-light);
    font-size:14.5px;
    margin:0;
  }
  @media (max-width:800px){
    .case-approach{grid-template-columns:1fr; gap:28px;}
  }

  /* ===== What I do ===== */
  .services{
    background:var(--paper);
    padding:112px 0;
  }
  .service-list{
    border-top:1px solid var(--line-light);
  }
  .service-row{
    display:grid;
    grid-template-columns:220px 1fr 140px;
    gap:40px;
    padding:36px 0;
    border-bottom:1px solid var(--line-light);
    align-items:baseline;
  }
  .service-row .name{
    font-family:'Space Grotesk',sans-serif;
    font-size:24px;
  }
  .service-row .desc{
    color:#4a4944;
    font-size:15.5px;
    max-width:56ch;
  }
  .service-row .tools{
    color:var(--stone);
    font-size:13.5px;
    text-align:right;
  }
  @media (max-width:760px){
    .service-row{grid-template-columns:1fr; gap:10px;}
    .service-row .tools{text-align:left;}
  }

  /* ===== Contact / footer ===== */
  .contact{
    background:var(--charcoal);
    color:var(--white);
    padding:120px 0 56px;
  }
  .contact h2{
    font-size:clamp(34px,6vw,64px);
    line-height:1.05;
    max-width:14ch;
  }
  .contact-row{
    display:flex;
    justify-content:space-between;
    align-items:flex-end;
    gap:32px;
    margin-top:48px;
    flex-wrap:wrap;
  }
  .contact-links{
    display:flex;
    gap:28px;
    flex-wrap:wrap;
  }
  .contact-links a{
    text-decoration:none;
    color:var(--stone-light);
    font-size:15px;
    border-bottom:1px solid var(--line);
    padding-bottom:4px;
  }
  .contact-links a:hover{color:var(--white); border-color:var(--cobalt);}
  .foot-note{
    margin-top:80px;
    padding-top:24px;
    border-top:1px solid var(--line);
    display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px;
    color:var(--stone);
    font-size:13px;
  }

  /* ===== Motion ===== */
  @media (prefers-reduced-motion: no-preference){
    .hero-kicker{ opacity:0; animation:fadeUp .7s ease forwards; }
    .hero h1{ opacity:0; animation:fadeUp .8s ease forwards; animation-delay:.08s; }
    .hero-sub{ opacity:0; animation:fadeUp .8s ease forwards; animation-delay:.2s; }
    .hero-stats{ opacity:0; animation:fadeUp .8s ease forwards; animation-delay:.34s; }

    .reveal{
      opacity:0;
      transform:translateY(28px);
      transition:opacity .7s cubic-bezier(.16,.8,.3,1), transform .7s cubic-bezier(.16,.8,.3,1);
    }
    .reveal.is-visible{ opacity:1; transform:translateY(0); }
    .reveal-stagger.is-visible > *{ opacity:1; transform:translateY(0); }
    .reveal-stagger > *{
      opacity:0;
      transform:translateY(22px);
      transition:opacity .6s cubic-bezier(.16,.8,.3,1), transform .6s cubic-bezier(.16,.8,.3,1);
    }
    .reveal-stagger > *:nth-child(1){transition-delay:.02s;}
    .reveal-stagger > *:nth-child(2){transition-delay:.12s;}
    .reveal-stagger > *:nth-child(3){transition-delay:.22s;}
    .reveal-stagger > *:nth-child(4){transition-delay:.32s;}
  }
  @keyframes fadeUp{
    from{ opacity:0; transform:translateY(18px); }
    to{ opacity:1; transform:translateY(0); }
  }

  .hero-kicker .dot{ animation:pulse 2.6s ease-in-out infinite; }
  @keyframes pulse{
    0%,100%{ box-shadow:0 0 0 0 rgba(47,92,255,.55); }
    50%{ box-shadow:0 0 0 6px rgba(47,92,255,0); }
  }

  .case-visual .frame{ overflow:hidden; }
  .case-visual .frame img{
    transition:transform .6s cubic-bezier(.16,.8,.3,1);
    will-change:transform;
  }
  @media (prefers-reduced-motion: no-preference){
    .case-visual .frame:hover img{ transform:scale(1.025); }
  }

  .service-row{ transition:background-color .3s ease, padding-left .3s ease; }
  .service-row:hover{ background-color:rgba(0,0,0,.02); padding-left:8px; }

  .contact-links a{ transition:color .25s ease, border-color .25s ease; }

  .nav .links a{ position:relative; }
  .nav .links a::after{
    content:"";
    position:absolute; left:0; bottom:-4px;
    width:0; height:1px; background:currentColor;
    transition:width .3s ease;
  }
  .nav .links a:hover::after{ width:100%; }

  .case-subhead{
    max-width:640px;
    margin-bottom:28px;
  }
  .case-subhead h3{
    font-size:22px;
    color:var(--white);
    margin-bottom:12px;
  }
  .case-subhead p{
    color:var(--stone-light);
    font-size:15.5px;
    margin:0;
  }

  /* ===== Browser scroll mockup ===== */
  .browser-mock{
    position:relative;
    border:1px solid var(--line);
    border-radius:12px;
    overflow:hidden;
    background:#fff;
    max-width:600px;
    margin:0 auto;
  }
  .browser-bar{
    display:flex; align-items:center; gap:7px;
    padding:12px 16px;
    background:var(--charcoal-2);
    border-bottom:1px solid var(--line);
  }
  .browser-bar .bdot{ width:10px; height:10px; border-radius:50%; flex:none; }
  .browser-bar .bdot.r{ background:#ff5f57; }
  .browser-bar .bdot.y{ background:#febc2e; }
  .browser-bar .bdot.g{ background:#28c840; }
  .browser-url{
    margin-left:10px;
    background:#37362f;
    color:var(--stone-light);
    border-radius:6px;
    padding:5px 14px;
    font-size:12.5px;
    flex:1;
  }
  .browser-scroll{
    height:520px;
    overflow-y:auto;
    scroll-behavior:smooth;
    background:#fff;
    scrollbar-width:thin;
    scrollbar-color:var(--stone) transparent;
  }
  .browser-scroll::-webkit-scrollbar{ width:8px; }
  .browser-scroll::-webkit-scrollbar-thumb{ background:var(--stone); border-radius:4px; }
  .browser-scroll img{ display:block; width:100%; }
  .scroll-hint{
    position:absolute;
    bottom:16px; left:50%;
    transform:translateX(-50%);
    background:rgba(27,27,26,.85);
    color:var(--white);
    font-size:12.5px;
    padding:7px 14px;
    border-radius:99px;
    display:flex; align-items:center; gap:6px;
    pointer-events:none;
    transition:opacity .4s ease;
  }
  .scroll-hint span{ animation:bob 1.4s ease-in-out infinite; }
  .scroll-hint.hidden{ opacity:0; }
  @keyframes bob{
    0%,100%{ transform:translateY(0); }
    50%{ transform:translateY(3px); }
  }

  /* ===== Carousel ===== */
  .carousel{
    position:relative;
    max-width:600px;
    margin:0 auto;
    background:var(--charcoal-2);
    border:1px solid var(--line);
    border-radius:12px;
    overflow:hidden;
  }
  .carousel-track{
    display:flex;
    transition:transform .5s cubic-bezier(.16,.8,.3,1);
  }
  .carousel-slide{
    flex:0 0 100%;
    height:520px;
    display:flex;
    align-items:center;
    justify-content:center;
    padding:20px;
  }
  .carousel-slide img{
    max-width:100%;
    max-height:100%;
    object-fit:contain;
  }
  .carousel-btn{
    position:absolute;
    top:50%; transform:translateY(-50%);
    width:38px; height:38px;
    border-radius:50%;
    border:1px solid var(--line);
    background:rgba(27,27,26,.7);
    color:var(--white);
    font-size:19px;
    line-height:1;
    cursor:pointer;
    display:flex; align-items:center; justify-content:center;
    transition:background-color .25s ease, border-color .25s ease;
  }
  .carousel-btn:hover{ background:var(--cobalt); border-color:var(--cobalt); }
  .carousel-btn.prev{ left:14px; }
  .carousel-btn.next{ right:14px; }
  .carousel-dots{
    position:absolute;
    bottom:16px; left:50%;
    transform:translateX(-50%);
    display:flex; gap:8px;
    padding:8px 12px;
    background:rgba(27,27,26,.55);
    border-radius:99px;
  }
  .c-dot{
    width:7px; height:7px;
    border-radius:50%;
    border:none;
    background:var(--stone);
    cursor:pointer;
    padding:0;
    transition:background-color .25s ease, transform .25s ease;
  }
  .c-dot.active{ background:var(--cobalt); transform:scale(1.25); }

  .process-list{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:32px;
    margin-bottom:56px;
    padding-bottom:40px;
    border-bottom:1px solid var(--line);
  }
  .p-item .p-idx{
    font-family:'Space Grotesk',sans-serif;
    color:var(--cobalt);
    font-size:13px;
    margin-bottom:10px;
  }
  .p-item h4{
    font-size:16.5px;
    color:var(--white);
    margin-bottom:8px;
  }
  .p-item p{
    color:var(--stone-light);
    font-size:14px;
    margin:0;
  }
  @media (max-width:800px){
    .process-list{grid-template-columns:1fr; gap:26px;}
  }

  .articles{
    background:var(--paper);
    padding:112px 0;
  }
  .articles-note{
    color:var(--stone);
    font-size:14.5px;
    max-width:56ch;
    margin:-24px 0 48px;
  }
  .article-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:28px;
  }
  .article-card{
    border:1px solid var(--line-light);
    background:var(--paper-2);
    padding:28px;
    display:flex;
    flex-direction:column;
    gap:14px;
    transition:border-color .25s ease, transform .25s ease;
  }
  .article-card:hover{
    border-color:var(--cobalt);
    transform:translateY(-3px);
  }
  .article-badge{
    align-self:flex-start;
    font-size:11.5px;
    color:var(--cobalt);
    border:1px solid var(--cobalt);
    border-radius:99px;
    padding:3px 10px;
  }
  .article-card h3{
    font-size:17px;
    line-height:1.3;
    color:var(--ink);
  }
  .article-card p{
    color:#5a594f;
    font-size:14px;
    margin:0;
  }
  @media (max-width:800px){
    .article-grid{grid-template-columns:1fr;}
  }