:root{
    --ink:#0a0a0b;
    --ink-2:#131316;
    --ink-3:#1b1b1e;
    --paper:#f2efe9;
    --paper-2:#e8e4db;
    --accent:#ff3d22;
    --accent-deep:#c22a15;
    --accent-glow:#ff6a4d;
    --stone:#94918a;
    --stone-light:#c7c4bc;
    --line:rgba(245,243,239,0.12);
    --line-strong:rgba(245,243,239,0.22);
    --display:'Anton', sans-serif;
    --body:'Archivo', sans-serif;
    --mono:'IBM Plex Mono', monospace;
    --ease:cubic-bezier(.16,.84,.34,1);
    --container: min(1240px, 92vw);
  }

  *,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
  html{scroll-behavior:smooth;}
  body{
    background:var(--ink);
    color:var(--paper);
    font-family:var(--body);
    font-weight:400;
    line-height:1.5;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img,svg{display:block;max-width:100%;}
  a{color:inherit;text-decoration:none;}
  ::selection{background:var(--accent);color:var(--ink);}
  :focus-visible{outline:2px solid var(--accent);outline-offset:3px;}

  .wrap{width:var(--container);margin-inline:auto;}

  .eyebrow{
    font-family:var(--mono);font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);
    display:flex;align-items:center;gap:.6em;
  }
  .eyebrow::before{
    content:'';width:.85em;height:.85em;
    background:
      linear-gradient(var(--accent),var(--accent)) 0 0/50% 50% no-repeat,
      linear-gradient(var(--accent),var(--accent)) 100% 100%/50% 50% no-repeat;
    background-color:transparent;display:inline-block;flex:none;
  }

  h1,h2,h3{font-family:var(--display);font-weight:400;text-transform:uppercase;letter-spacing:.005em;line-height:.92;}

  .line-mask{display:block;overflow:hidden;}
  .line-inner{display:inline-block;will-change:transform;}

  /* ---------- buttons ---------- */
  .btn{
    position:relative;display:inline-flex;align-items:center;gap:.6em;
    font-family:var(--mono);font-size:.82rem;letter-spacing:.06em;text-transform:uppercase;
    padding:.95em 1.6em;border-radius:100px;border:1px solid transparent;white-space:nowrap;
    overflow:hidden;isolation:isolate;transition:border-color .4s ease, color .4s ease;
  }
  .btn::before{content:'';position:absolute;inset:0;z-index:-1;border-radius:100px;transform:scale(0);transform-origin:50% 50%;transition:transform .55s var(--ease);}
  .btn:hover::before{transform:scale(1);}
  .btn-solid{background:var(--accent);color:var(--ink);}
  .btn-solid::before{background:var(--ink);}
  .btn-solid:hover{color:var(--accent-glow);}
  .btn-ghost{border-color:var(--line-strong);color:var(--paper);}
  .btn-ghost::before{background:var(--accent);}
  .btn-ghost:hover{border-color:var(--accent);color:var(--ink);}
  .btn svg{width:1em;height:1em;transition:transform .3s var(--ease);}
  .btn:hover svg{transform:translate(2px,-2px);}

  /* ---------- checker mark ---------- */
  .checker{display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);width:2.2rem;height:2.2rem;flex:none;}
  .checker i{background:var(--accent);transition:background .4s var(--ease), transform .4s var(--ease);}
  .checker i:nth-child(2n){background:transparent;}
  .logo:hover .checker i{background:var(--accent);}
  .logo:hover .checker i:nth-child(2n){background:var(--paper);}
  .logo:hover .checker i:nth-child(odd){transform:scale(.7);}

  /* ---------- nav ---------- */
  header{position:fixed;inset:0 0 auto 0;z-index:100;padding:1.1rem 0;background:linear-gradient(to bottom, rgba(10,10,11,.92), rgba(10,10,11,0));backdrop-filter:blur(2px);}
  header.scrolled{background:rgba(10,10,11,.86);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);}
  .nav{display:flex;align-items:center;justify-content:space-between;gap:2rem;}
  .logo{display:flex;align-items:center;gap:.7rem;font-family:var(--display);letter-spacing:.02em;}
  .logo .checker{width:1.5rem;height:1.5rem;}
  .logo-text{font-size:1.05rem;line-height:1;}
  .logo-text span{display:block;font-family:var(--mono);font-size:.55rem;letter-spacing:.28em;color:var(--stone);text-transform:uppercase;margin-top:.25rem;}
  .nav-links{display:flex;gap:2.2rem;font-family:var(--mono);font-size:.78rem;letter-spacing:.04em;text-transform:uppercase;}
  .nav-links a{position:relative;padding-bottom:.3rem;}
  .nav-links a::after{content:'';position:absolute;left:0;bottom:0;width:0;height:1px;background:var(--accent);transition:width .35s var(--ease);}
  .nav-links a:hover::after{width:100%;}
  @media (max-width:980px){.nav-links{display:none;}}

  /* ---------- page intro ---------- */
  .cs-hero{padding:clamp(8rem,16vw,11rem) 0 clamp(3rem,6vw,4.5rem);border-bottom:1px solid var(--line);}
  .cs-hero-row{display:grid;grid-template-columns:1.3fr .9fr;gap:3rem;align-items:end;}
  .cs-title{font-size:clamp(3rem,8vw,6.4rem);margin-top:1rem;}
  .cs-title .line-inner{
    background-image:
      radial-gradient(circle at 18% 22%, rgba(255,255,255,.55) 0 6%, transparent 7%),
      radial-gradient(circle at 62% 12%, rgba(255,255,255,.4) 0 5%, transparent 6%),
      radial-gradient(circle at 82% 52%, rgba(255,255,255,.45) 0 8%, transparent 9%),
      radial-gradient(circle at 34% 64%, rgba(255,255,255,.32) 0 5%, transparent 6%),
      radial-gradient(circle at 56% 86%, rgba(255,255,255,.28) 0 6%, transparent 7%),
      radial-gradient(circle at 8% 82%, rgba(255,255,255,.22) 0 5%, transparent 6%),
      linear-gradient(135deg, #ffa25c 0%, #ff5a30 35%, #ff3d22 55%, #c22a15 78%, #7a1a0d 100%);
    background-size:260% 260%;
    background-position:0% 40%;
    -webkit-background-clip:text;
    background-clip:text;
    color:transparent;
    -webkit-text-fill-color:transparent;
    animation:cs-title-shift 10s ease-in-out infinite alternate;
  }
  @keyframes cs-title-shift{
    0%{background-position:0% 35%;}
    100%{background-position:100% 65%;}
  }
  @media (prefers-reduced-motion: reduce){
    .cs-title .line-inner{animation:none;background-position:30% 50%;}
  }
  .cs-lead{font-size:1.08rem;color:var(--stone-light);max-width:42ch;}
  .cs-hero-stats{display:flex;gap:2.4rem;margin-top:2rem;flex-wrap:wrap;}
  .cs-stat b{display:block;font-family:var(--display);font-size:1.8rem;color:var(--paper);}
  .cs-stat span{font-family:var(--mono);font-size:.64rem;letter-spacing:.08em;text-transform:uppercase;color:var(--stone);}
  .cs-back{
    display:inline-flex;align-items:center;gap:.6em;margin-bottom:1.6rem;
    font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--stone);
    transition:color .3s ease;
  }
  .cs-back:hover{color:var(--accent);}
  .cs-back svg{width:1em;height:1em;transform:rotate(180deg);}

  /* ---------- case list ---------- */
  .case-list{display:flex;flex-direction:column;}
  .case-row{
    display:grid;
    grid-template-columns:1fr 1.15fr;
    gap:clamp(2rem,5vw,4.5rem);
    align-items:center;
    padding:clamp(3rem,7vw,5rem) 0;
    border-bottom:1px solid var(--line);
  }
  .case-row:nth-child(even){grid-template-columns:1.15fr 1fr;}
  .case-row:nth-child(even) .case-content{order:2;}
  .case-row:nth-child(even) .case-media{order:1;}

  .case-content{display:flex;flex-direction:column;gap:1.2rem;}
  .case-meta-row{display:flex;align-items:center;gap:1rem;flex-wrap:wrap;}
  .case-index{font-family:var(--mono);font-size:.68rem;color:var(--stone);letter-spacing:.06em;}
  .case-tag{
    font-family:var(--mono);font-size:.62rem;letter-spacing:.08em;text-transform:uppercase;color:var(--accent-glow);
    border:1px solid rgba(255,106,77,.4);padding:.3em .8em;border-radius:100px;
  }
  .case-title{font-size:clamp(2rem,4vw,3.1rem);transition:color .35s ease;}
  .case-row:hover .case-title{color:var(--accent);}
  .case-desc{font-size:1rem;color:var(--stone-light);max-width:42ch;}
  .case-foot{display:flex;align-items:center;justify-content:space-between;margin-top:.6rem;max-width:42ch;}
  .case-date{font-family:var(--mono);font-size:.68rem;color:var(--stone);letter-spacing:.04em;}
  .case-date b{display:block;color:var(--accent);font-size:.6rem;letter-spacing:.1em;margin-bottom:.3rem;}
  .case-arrow{
    width:2.6rem;height:2.6rem;border-radius:50%;border:1px solid var(--line-strong);
    display:flex;align-items:center;justify-content:center;flex:none;
    transition:border-color .4s ease, background .4s ease, transform .5s var(--ease);
  }
  .case-arrow svg{width:1rem;height:1rem;stroke:var(--paper);transition:stroke .3s ease;}
  .case-row:hover .case-arrow{border-color:var(--accent);background:var(--accent);transform:rotate(45deg);}
  .case-row:hover .case-arrow svg{stroke:var(--ink);}

  .case-media{
    position:relative;
    aspect-ratio:4/3;
    overflow:hidden;
    border:1px solid var(--line);
  }
  .case-media-parallax{position:absolute;inset:-10% -6%;width:112%;height:120%;will-change:transform;}
  .case-img{
    position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
    transition:transform 1.1s var(--ease), filter .6s ease;
  }
  .case-row:hover .case-img{transform:scale(1.06);filter:grayscale(.05) contrast(1.14) brightness(.55) saturate(1.1);}
  .case-media-tint{position:absolute;inset:0;opacity:.4;pointer-events:none;}
  .case-badge{
    position:absolute;bottom:1rem;right:1rem;z-index:3;
    width:3.2rem;height:3.2rem;background:var(--accent);
    display:flex;align-items:center;justify-content:center;
    transform:scale(0) rotate(-20deg);
    transition:transform .5s var(--ease);
  }
  .case-row:hover .case-badge{transform:scale(1) rotate(0deg);}
  .case-badge svg{width:1.2rem;height:1.2rem;stroke:var(--ink);}

  @media (max-width:900px){
    .cs-hero-row{grid-template-columns:1fr;}
    .case-row{grid-template-columns:1fr !important;}
    .case-row:nth-child(even) .case-content{order:1;}
    .case-row:nth-child(even) .case-media{order:2;}
  }

  /* ---------- closing CTA ---------- */
  .cs-cta{padding:clamp(5rem,10vw,7.5rem) 0;text-align:center;}
  .cs-cta h2{font-size:clamp(2.4rem,6vw,4.6rem);}
  .cs-cta p{color:var(--stone-light);max-width:44ch;margin:1.2rem auto 2.2rem;font-size:1.05rem;}

  footer{border-top:1px solid var(--line);padding:2.2rem 0;display:flex;justify-content:space-between;align-items:center;font-family:var(--mono);font-size:.72rem;letter-spacing:.05em;color:var(--stone);text-transform:uppercase;flex-wrap:wrap;gap:1rem;}

  @media (prefers-reduced-motion: reduce){
    *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  }