:root{
    --ink:#121212;
    --ink-2:#1a1a1a;
    --bone:#EDE8DF;
    --grease:#E4432B;
    --steel:#8A8F94;
    --chrome:#C9CDD1;
    --line: rgba(237,232,223,0.14);
    --line-strong: rgba(237,232,223,0.28);
    --display:'Anton', sans-serif;
    --body:'Inter', sans-serif;
    --mono:'IBM Plex Mono', monospace;
  }

  *{ margin:0; padding:0; box-sizing:border-box; }

  html{ scroll-behavior:smooth; }

  body{
    background:var(--ink);
    color:var(--bone);
    font-family:var(--body);
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }

  a{ color:inherit; text-decoration:none; }
  button{ font-family:inherit; cursor:pointer; }
  img{ display:block; }

  ::selection{ background:var(--grease); color:var(--bone); }

  /* ---------- utility ---------- */
  .eyebrow{
    font-family:var(--mono);
    font-size:11px;
    letter-spacing:0.18em;
    text-transform:uppercase;
    color:var(--steel);
    display:flex;
    align-items:center;
    gap:10px;
  }
  .eyebrow::before{
    content:"";
    width:14px; height:1px;
    background:var(--grease);
    display:inline-block;
  }

  /* ---------- sprocket strip (signature motif) ---------- */
  .sprockets{
    height:9px;
    width:100%;
    background-image:repeating-linear-gradient(
      to right,
      var(--steel) 0px, var(--steel) 5px,
      transparent 5px, transparent 13px
    );
    opacity:0.35;
  }

  /* ---------- navbar ---------- */
  .navbar{
    position:fixed;
    top:0; left:0; right:0;
    z-index:200;
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:22px 44px;
    background:linear-gradient(to bottom, rgba(18,18,18,0.9), rgba(18,18,18,0));
    transition:background 0.3s ease, padding 0.3s ease, border-color 0.3s ease;
    border-bottom:1px solid transparent;
  }
  .navbar.scrolled{
    background:rgba(18,18,18,0.92);
    backdrop-filter:blur(10px);
    padding:14px 44px;
    border-bottom:1px solid var(--line);
  }
  .navbar__logo{
    font-family:var(--display);
    font-size:19px;
    letter-spacing:0.06em;
  }
  .navbar__logo span{ color:var(--grease); }
  .navbar__links{
    display:flex;
    gap:34px;
    font-family:var(--mono);
  }
  .navbar__link{
    font-size:12px;
    letter-spacing:0.1em;
    text-transform:uppercase;
    color:var(--steel);
    position:relative;
    padding-bottom:4px;
    background:none;
    border:none;
  }
  .navbar__link::after{
    content:"";
    position:absolute; left:0; bottom:0;
    width:0; height:1px;
    background:var(--grease);
    transition:width 0.25s ease;
  }
  .navbar__link:hover, .navbar__link.active{ color:var(--bone); }
  .navbar__link.active::after, .navbar__link:hover::after{ width:100%; }

  .navbar__toggle{
    display:none;
    flex-direction:column;
    gap:5px;
    background:none; border:none;
  }
  .navbar__toggle .bar{
    width:22px; height:1.5px; background:var(--bone);
    transition:transform 0.25s ease, opacity 0.25s ease;
  }
  .navbar__toggle.open .bar:nth-child(1){ transform:translateY(6.5px) rotate(45deg); }
  .navbar__toggle.open .bar:nth-child(2){ opacity:0; }
  .navbar__toggle.open .bar:nth-child(3){ transform:translateY(-6.5px) rotate(-45deg); }

  .navbar__mobile{
    display:none;
    position:fixed;
    top:0; right:0;
    height:100vh;
    width:78%;
    max-width:340px;
    background:var(--ink-2);
    border-left:1px solid var(--line);
    flex-direction:column;
    gap:26px;
    padding:110px 36px 40px;
    transform:translateX(100%);
    transition:transform 0.35s ease;
    z-index:190;
  }
  .navbar__mobile.open{ display:flex; transform:translateX(0); }
  .navbar__mobile-link{
    font-family:var(--display);
    font-size:26px;
    letter-spacing:0.02em;
    color:var(--bone);
  }
  .navbar__mobile-link .num{ font-family:var(--mono); font-size:12px; color:var(--grease); margin-right:10px; }

  @media (max-width:860px){
    .navbar__links{ display:none; }
    .navbar__toggle{ display:flex; }
    .navbar{ padding:18px 22px; }
    .navbar.scrolled{ padding:14px 22px; }
  }

  /* ---------- pages ---------- */
  .page{ display:none; }
  .page.active{ display:block; animation:fadeIn 0.5s ease; }
  @keyframes fadeIn{ from{opacity:0; transform:translateY(8px);} to{opacity:1; transform:translateY(0);} }

  /* ---------- hero ---------- */
  .hero{ position:relative; height:100vh; min-height:640px; overflow:hidden; }
  .hero__img{ width:100%; height:100%; object-fit:cover; filter:grayscale(15%) contrast(1.05); }
  .hero__overlay{
    position:absolute; inset:0;
    background:linear-gradient(180deg, rgba(18,18,18,0.35) 0%, rgba(18,18,18,0.25) 45%, rgba(18,18,18,0.92) 100%);
  }
  .hero__frame-tag{
    position:absolute; top:100px; left:44px;
    font-family:var(--mono); font-size:12px; color:var(--bone);
    display:flex; align-items:center; gap:8px;
    z-index:2;
  }
  .hero__frame-tag .dot{ width:6px; height:6px; border-radius:50%; background:var(--grease); }
  .hero__content{
    position:absolute; bottom:0; left:0; right:0;
    padding:0 44px 64px;
    z-index:2;
  }
  .hero__content .eyebrow{ margin-bottom:18px; }
  .hero__title{
    font-family:var(--display);
    font-size:clamp(46px, 9vw, 128px);
    line-height:0.92;
    letter-spacing:0.01em;
    text-transform:uppercase;
  }
  .hero__title .accent{ color:var(--grease); }
  .hero__sub{
    font-family:var(--mono);
    font-size:13px;
    color:var(--steel);
    letter-spacing:0.08em;
    margin-top:20px;
    text-transform:uppercase;
  }
  .hero__cta{ display:flex; gap:16px; margin-top:34px; flex-wrap:wrap; }
  .btn{
    font-family:var(--mono);
    font-size:12px;
    letter-spacing:0.08em;
    text-transform:uppercase;
    padding:14px 26px;
    border:1px solid var(--line-strong);
    background:transparent;
    color:var(--bone);
    transition:all 0.25s ease;
  }
  .btn:hover{ background:var(--bone); color:var(--ink); border-color:var(--bone); }
  .btn--solid{ background:var(--grease); border-color:var(--grease); color:var(--ink); }
  .btn--solid:hover{ background:var(--bone); border-color:var(--bone); }

  @media (max-width:860px){
    .hero__content{ padding:0 22px 48px; }
    .hero__frame-tag{ left:22px; top:88px; }
  }

  /* ---------- section header (used on category pages) ---------- */
  .section-head{
    padding:150px 44px 40px;
    display:flex;
    justify-content:space-between;
    align-items:flex-end;
    flex-wrap:wrap;
    gap:20px;
    border-bottom:1px solid var(--line);
  }
  .section-head__title{
    font-family:var(--display);
    font-size:clamp(38px, 6vw, 74px);
    text-transform:uppercase;
    line-height:0.95;
  }
  .section-head__meta{
    font-family:var(--mono);
    font-size:12px;
    color:var(--steel);
    text-align:right;
    line-height:1.7;
  }
  @media (max-width:860px){
    .section-head{ padding:120px 22px 30px; }
    .section-head__meta{ text-align:left; }
  }

  /* ---------- contact-sheet gallery (signature element) ---------- */
  .contact-sheet{
    display:grid;
    grid-template-columns:repeat(3, 1fr);
    gap:1px;
    background:var(--line);
    padding:1px;
  }
  .frame{
    position:relative;
    background:var(--ink);
    overflow:hidden;
  }
  .frame__sprockets{ }
  .frame__img-wrap{
    position:relative;
    aspect-ratio:4/5;
    overflow:hidden;
  }
  .frame__img{
    width:100%; height:100%; object-fit:cover;
    filter:grayscale(35%) contrast(1.05);
    transition:transform 0.6s ease, filter 0.4s ease;
  }
  .frame:hover .frame__img{ transform:scale(1.045); filter:grayscale(0%) contrast(1.05); }

  .frame__tag{
    position:absolute; top:10px; left:10px;
    font-family:var(--mono); font-size:10px; letter-spacing:0.05em;
    color:var(--bone);
    background:rgba(18,18,18,0.55);
    padding:3px 7px;
    z-index:2;
  }

  .frame__mark{
    position:absolute;
    top:50%; left:50%;
    width:52px; height:52px;
    border:1.5px solid var(--grease);
    border-radius:50%;
    transform:translate(-50%,-50%) scale(0.6);
    opacity:0;
    transition:opacity 0.3s ease, transform 0.3s ease;
    pointer-events:none;
  }
  .frame__mark::before, .frame__mark::after{
    content:""; position:absolute; background:var(--grease);
  }
  .frame__mark::before{ width:1px; height:12px; top:-16px; left:50%; transform:translateX(-50%); }
  .frame__mark::after{ width:12px; height:1px; left:-16px; top:50%; transform:translateY(-50%); }
  .frame:hover .frame__mark{ opacity:0.9; transform:translate(-50%,-50%) scale(1); }

  .frame__caption{
    position:absolute; bottom:0; left:0; right:0;
    padding:14px 14px 12px;
    background:linear-gradient(to top, rgba(18,18,18,0.95), transparent);
    transform:translateY(100%);
    transition:transform 0.35s ease;
    z-index:2;
  }
  .frame:hover .frame__caption{ transform:translateY(0); }
  .frame__caption-title{ font-family:var(--body); font-weight:600; font-size:13px; }
  .frame__caption-sub{ font-family:var(--mono); font-size:10px; color:var(--steel); margin-top:2px; letter-spacing:0.05em; }

  @media (max-width:860px){
    .contact-sheet{ grid-template-columns:repeat(2, 1fr); }
  }

  .sheet-footer{
    padding:26px 44px 90px;
    font-family:var(--mono);
    font-size:11px;
    color:var(--steel);
    letter-spacing:0.06em;
    display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px;
  }
  @media (max-width:860px){ .sheet-footer{ padding:20px 22px 70px; } }

  /* ---------- about ---------- */
  .about{
    padding:150px 44px 100px;
    display:grid;
    grid-template-columns:0.85fr 1.15fr;
    gap:70px;
    align-items:start;
  }
  .about__portrait{
    position:relative;
  }
  .about__portrait img{
    width:100%; aspect-ratio:4/5; object-fit:cover;
    filter:grayscale(30%) contrast(1.05);
    border:1px solid var(--line-strong);
  }
  .about__portrait-tag{
    font-family:var(--mono); font-size:11px; color:var(--steel);
    margin-top:12px; letter-spacing:0.05em;
  }
  .about__title{
    font-family:var(--display);
    font-size:clamp(36px,5vw,60px);
    text-transform:uppercase;
    margin-bottom:22px;
  }
  .about__bio{
    font-size:16px;
    line-height:1.8;
    color:var(--bone);
    max-width:560px;
    margin-bottom:36px;
  }
  .about__bio + .about__bio{ margin-top:-18px; }
  .specs{
    border-top:1px solid var(--line);
    font-family:var(--mono);
    font-size:13px;
  }
  .specs__row{
    display:flex; justify-content:space-between;
    padding:14px 0;
    border-bottom:1px solid var(--line);
    gap:20px;
  }
  .specs__row span:first-child{ color:var(--steel); text-transform:uppercase; letter-spacing:0.06em; font-size:11px; }
  .specs__row span:last-child{ text-align:right; }

  @media (max-width:860px){
    .about{ grid-template-columns:1fr; padding:120px 22px 70px; gap:36px; }
  }

  /* ---------- contact ---------- */
  .contact{
    padding:150px 44px 110px;
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:70px;
  }
  .contact__title{
    font-family:var(--display);
    font-size:clamp(38px,6vw,72px);
    text-transform:uppercase;
    line-height:0.95;
    margin-bottom:20px;
  }
  .contact__desc{ color:var(--steel); max-width:420px; line-height:1.7; margin-bottom:34px; }
  .contact__info{ font-family:var(--mono); font-size:13px; line-height:2.4; }
  .contact__info a{ border-bottom:1px solid var(--line-strong); padding-bottom:1px; }
  .contact__info a:hover{ border-color:var(--grease); color:var(--grease); }

  .field{ margin-bottom:22px; }
  .field label{
    display:block; font-family:var(--mono); font-size:11px;
    letter-spacing:0.08em; text-transform:uppercase; color:var(--steel);
    margin-bottom:8px;
  }
  .field input, .field select, .field textarea{
    width:100%;
    background:transparent;
    border:none;
    border-bottom:1px solid var(--line-strong);
    color:var(--bone);
    font-family:var(--body);
    font-size:15px;
    padding:10px 2px;
    outline:none;
    transition:border-color 0.25s ease;
  }
  .field select option{ background:var(--ink); }
  .field input:focus, .field select:focus, .field textarea:focus{ border-color:var(--grease); }
  .field textarea{ resize:vertical; min-height:90px; }
  .contact__submit{ margin-top:8px; }

  @media (max-width:860px){
    .contact{ grid-template-columns:1fr; padding:120px 22px 80px; gap:44px; }
  }

  /* ---------- footer ---------- */
  .site-footer{
    border-top:1px solid var(--line);
    padding:34px 44px;
    display:flex;
    justify-content:space-between;
    align-items:center;
    flex-wrap:wrap;
    gap:16px;
  }
  .site-footer__logo{ font-family:var(--display); font-size:15px; letter-spacing:0.05em; }
  .site-footer__socials{
    display:flex; gap:24px;
    font-family:var(--mono); font-size:11px;
    letter-spacing:0.06em; text-transform:uppercase;
    color:var(--steel);
  }
  .site-footer__socials a:hover{ color:var(--grease); }
  .site-footer__copy{
    font-family:var(--mono); font-size:10px; color:var(--steel);
    width:100%;
    padding-top:18px;
    border-top:1px solid var(--line);
    margin-top:6px;
  }
  @media (max-width:860px){ .site-footer{ padding:26px 22px; } }

  /* focus visibility for accessibility */
  a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible{
    outline:1.5px solid var(--grease);
    outline-offset:2px;
  }

  @media (prefers-reduced-motion: reduce){
    *{ animation:none !important; transition:none !important; }
    html{ scroll-behavior:auto; }
  }