:root{
    --paper:#FFFFFF;
    --paper-2:#FFFFFF;
    --ink:#141414;
    --ink-soft:#1A1A1A;
    --urban:#8B857A;
    --rule:rgba(20,20,20,0.12);
    --rule-strong:rgba(20,20,20,0.22);
    --rule-light:rgba(255,255,255,0.22);
    --ease:cubic-bezier(0.22,1,0.36,1);
    --sidebar-w:380px;
  }

  *{margin:0;padding:0;box-sizing:border-box;}
  html,body{
    background:var(--paper);color:var(--ink);
    font-family:'Space Grotesk',sans-serif;font-weight:300;line-height:1.5;
    -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
    overflow-x:hidden;
  }
  ::selection{background:var(--ink);color:var(--paper);}
  a{color:inherit;text-decoration:none;}
  img{display:block;max-width:100%;}
  button{font-family:inherit;cursor:pointer;background:none;border:none;color:inherit;}
  .mono{font-family:'JetBrains Mono',monospace;}

  .lang-mark{
    font-family:'Space Grotesk',sans-serif;font-weight:300;letter-spacing:0.12em;
    text-transform:uppercase;font-size:16px;
  }

  /* ============ LAYOUT ============ */
  .layout{
    min-height:100vh;
  }

  /* Botão de menu (hambúrguer) do header global: só no mobile. */
  .menu-btn{display:none;}
  @media (max-width:860px){
    .menu-btn{
      display:flex;flex-direction:column;gap:5px;
      background:transparent;border:none;cursor:pointer;padding:8px;
    }
  }

  /* ============ SIDEBAR (FIXED) ============ */
  .sidebar{
    position:fixed;top:0;left:0;bottom:0;
    width:var(--sidebar-w);
    padding:104px 40px 40px;
    border-right:1px solid var(--rule);
    background:var(--paper);
    display:flex;flex-direction:column;
    overflow-y:auto;
    z-index:10;
  }
  .sidebar::-webkit-scrollbar{width:0;}

  .sidebar__top{
    display:flex;justify-content:space-between;align-items:center;
    padding-bottom:32px;border-bottom:1px solid var(--rule);
  }
  .sidebar__back{
    display:inline-flex;align-items:center;gap:10px;
    font-size:10px;letter-spacing:0.32em;text-transform:uppercase;font-weight:400;
    opacity:0.7;transition:opacity .4s var(--ease);
  }
  .sidebar__back:hover{opacity:1;}
  .sidebar__back .arrow{display:inline-block;transition:transform .5s var(--ease);}
  .sidebar__back:hover .arrow{transform:translateX(-6px);}

  .sidebar__head{margin-top:56px;}
  .sidebar__section{
    font-size:10px;letter-spacing:0.42em;text-transform:uppercase;
    font-weight:400;opacity:0.5;
    display:flex;align-items:center;gap:12px;margin-bottom:32px;
  }
  .sidebar__section::before{
    content:"";width:28px;height:1px;background:var(--ink);opacity:0.4;
  }
  .sidebar__number{
    font-family:'JetBrains Mono',monospace;
    font-size:11px;letter-spacing:0.04em;font-weight:300;opacity:0.55;
    margin-bottom:24px;
  }
  .sidebar__title{
    font-size:44px;font-weight:300;letter-spacing:-0.028em;line-height:0.98;
    text-transform:lowercase;margin-bottom:32px;
  }
  .sidebar__tag{
    display:inline-block;
    padding:8px 14px;
    font-size:9px;letter-spacing:0.32em;text-transform:uppercase;font-weight:400;
    border:1px solid var(--ink);
  }

  .sidebar__meta{
    margin-top:56px;
    display:grid;grid-template-columns:1fr 1fr;gap:28px 24px;
    padding-top:32px;border-top:1px solid var(--rule);
  }
  .sidebar__meta dt{
    font-size:9px;letter-spacing:0.36em;text-transform:uppercase;
    font-weight:400;opacity:0.5;margin-bottom:8px;
  }
  .sidebar__meta dd{
    font-size:13px;font-weight:300;line-height:1.4;letter-spacing:-0.005em;
  }

  .sidebar__footer{
    margin-top:auto;padding-top:40px;
    font-size:9px;letter-spacing:0.32em;text-transform:uppercase;font-weight:400;opacity:0.5;
    display:flex;justify-content:space-between;align-items:center;
  }
  .sidebar__progress{
    font-family:'JetBrains Mono',monospace;
    letter-spacing:0.04em;font-size:10px;
  }

  /* ============ CONTENT ============ */
  .content{
    margin-left:var(--sidebar-w);
    padding:0;
    background:var(--paper);
    min-height:100vh;
  }

  /* Hero image — full of right column, tall */
  .hero-img{
    position:relative;
    width:100%;height:100vh;height:100svh;
    background:var(--ink);
    overflow:hidden;
  }
  .hero-img__bg{
    position:absolute;inset:0;
    background-size:cover;background-position:center;
    transform:scale(1.04);
    animation:slowZoom 16s var(--ease) forwards;
  }
  @keyframes slowZoom{from{transform:scale(1.08);}to{transform:scale(1.0);}}
  .hero-img::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background:linear-gradient(180deg,rgba(0,0,0,0) 70%,rgba(0,0,0,0.35) 100%);
  }
  .hero-img__caption{
    position:absolute;bottom:32px;left:48px;right:48px;
    display:flex;justify-content:space-between;align-items:flex-end;
    color:var(--paper);
    font-size:10px;letter-spacing:0.32em;text-transform:uppercase;font-weight:400;opacity:0.85;
  }
  .hero-img__caption .r{text-align:right;font-family:'JetBrains Mono',monospace;letter-spacing:0.04em;}

  /* INTRO */
  .intro{
    padding:160px 96px 120px;
    max-width:1180px;
    display:grid;grid-template-columns:auto 1fr;gap:96px;
    border-bottom:1px solid var(--rule);
  }
  .intro__label{
    font-size:10px;letter-spacing:0.42em;text-transform:uppercase;
    font-weight:400;writing-mode:vertical-rl;transform:rotate(180deg);
    align-self:start;opacity:0.55;
  }
  .intro__body{max-width:780px;}
  .intro__lede{
    font-size:clamp(26px,2.6vw,38px);
    font-weight:300;line-height:1.2;letter-spacing:-0.018em;
    margin-bottom:48px;
  }
  .intro__lede em{font-style:italic;font-weight:300;}
  .intro__text p{
    font-size:15px;line-height:1.75;font-weight:300;
    margin-bottom:20px;color:rgba(20,20,20,0.82);
    max-width:620px;
  }
  .intro__text p::first-line{font-weight:400;}

  /* GALLERY — section framing */
  .gallery{
    padding:120px 48px 140px;
  }
  .gallery__head{
    max-width:1180px;margin:0 auto 64px;padding:0 48px;
    display:flex;justify-content:space-between;align-items:flex-end;
    border-bottom:1px solid var(--rule);padding-bottom:20px;
  }
  .gallery__label{
    font-size:10px;letter-spacing:0.42em;text-transform:uppercase;font-weight:400;opacity:0.6;
  }
  .gallery__count{
    font-family:'JetBrains Mono',monospace;
    font-size:10px;letter-spacing:0.04em;font-weight:300;opacity:0.55;
  }

  .gallery__grid{
    display:grid;grid-template-columns:repeat(12,1fr);
    gap:16px;
    max-width:1400px;margin:0 auto;
  }
  .gimg{
    position:relative;overflow:hidden;background:var(--urban);cursor:zoom-in;
  }
  .gimg__bg{
    position:absolute;inset:0;
    background-size:cover;background-position:center;
    transform:scale(1.01);
    transition:transform 1.4s var(--ease),filter .8s var(--ease);
  }
  .gimg:hover .gimg__bg{transform:scale(1.04);filter:brightness(0.88);}
  .gimg__num{
    position:absolute;top:16px;left:16px;z-index:2;
    font-family:'JetBrains Mono',monospace;
    font-size:9px;letter-spacing:0.04em;font-weight:300;
    color:var(--paper);opacity:0;transform:translateY(-4px);
    transition:all .5s var(--ease);
    padding:6px 10px;background:rgba(0,0,0,0.35);backdrop-filter:blur(4px);
  }
  .gimg:hover .gimg__num{opacity:1;transform:translateY(0);}

  /* aspect helpers */
  .ratio-16-9{aspect-ratio:16/9;}
  .ratio-4-5{aspect-ratio:4/5;}
  .ratio-1-1{aspect-ratio:1/1;}
  .ratio-3-2{aspect-ratio:3/2;}
  .ratio-2-3{aspect-ratio:2/3;}
  .ratio-3-4{aspect-ratio:3/4;}
  .ratio-21-9{aspect-ratio:21/9;}

  /* 1 — 1 big full */
  .row-1 .gimg{grid-column:1 / -1;}

  /* 2 — 2 cols */
  .row-2 .gimg{grid-column:span 6;}

  /* 3 — 3 cols */
  .row-3 .gimg{grid-column:span 4;}

  /* 4 — wide + narrow */
  .row-w .gimg:nth-child(1){grid-column:span 8;}
  .row-w .gimg:nth-child(2){grid-column:span 4;}

  /* narrow + wide (inverted) */
  .row-n .gimg:nth-child(1){grid-column:span 4;}
  .row-n .gimg:nth-child(2){grid-column:span 8;}

  /* MIDDLE QUOTE */
  .quote-block{
    margin:80px auto;max-width:980px;
    padding:0 48px;text-align:center;
  }
  .quote-block__mark{
    font-size:10px;letter-spacing:0.42em;text-transform:uppercase;
    font-weight:400;opacity:0.5;margin-bottom:32px;
  }
  .quote-block__text{
    font-size:clamp(24px,2.6vw,40px);
    font-weight:300;line-height:1.22;letter-spacing:-0.018em;
  }
  .quote-block__text em{font-style:italic;font-weight:300;}

  /* TECHNICAL SHEET */
  .sheet{
    padding:120px 96px;
    border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);
    background:var(--paper-2);
  }
  .sheet__inner{
    max-width:1180px;margin:0 auto;
    display:grid;grid-template-columns:1fr 2fr;gap:72px;
  }
  .sheet__title{
    font-size:10px;letter-spacing:0.42em;text-transform:uppercase;
    font-weight:400;opacity:0.55;
  }
  .sheet__list{
    display:grid;grid-template-columns:1fr 1fr;gap:40px 48px;
  }
  .sheet__list dt{
    font-size:9px;letter-spacing:0.36em;text-transform:uppercase;
    font-weight:400;opacity:0.5;margin-bottom:10px;
  }
  .sheet__list dd{
    font-size:14px;font-weight:300;line-height:1.5;
    padding-bottom:16px;border-bottom:1px solid var(--rule);
  }

  /* NEXT PROJECT */
  .next{
    padding:140px 48px;
    border-top:1px solid var(--rule);
    text-align:center;position:relative;
  }
  .next__eyebrow{
    font-size:10px;letter-spacing:0.42em;text-transform:uppercase;
    font-weight:400;opacity:0.5;margin-bottom:40px;
  }
  .next__link{
    display:inline-block;position:relative;padding-bottom:10px;
    font-size:clamp(44px,5vw,76px);
    font-weight:300;letter-spacing:-0.028em;text-transform:lowercase;
  }
  .next__link::after{
    content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;
    background:var(--ink);transform:scaleX(0);transform-origin:right center;
    transition:transform .9s var(--ease);
  }
  .next__link:hover::after{transform-origin:left center;transform:scaleX(1);}
  .next__link .arrow{display:inline-block;margin-left:20px;transition:transform .6s var(--ease);}
  .next__link:hover .arrow{transform:translateX(18px);}
  .next__meta{
    margin-top:28px;
    font-size:10px;letter-spacing:0.32em;text-transform:uppercase;
    font-weight:300;opacity:0.5;
  }

  /* ============ FOOTER ============ */
  .footer{
    background:var(--ink);color:var(--paper);
    padding:80px 48px 36px;
  }
  .footer__top{
    display:grid;grid-template-columns:1fr 1fr;gap:48px;
    padding-bottom:60px;border-bottom:1px solid var(--rule-light);
  }
  .footer__mark{font-size:72px;font-weight:300;letter-spacing:0.02em;line-height:1;}
  .footer__contact{
    justify-self:end;text-align:right;
    font-size:12px;line-height:1.7;font-weight:300;
  }
  .footer__contact small{
    display:block;opacity:0.5;font-size:10px;letter-spacing:0.32em;text-transform:uppercase;margin-bottom:12px;
  }
  .footer__bottom{
    margin-top:32px;
    display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;
    font-size:10px;letter-spacing:0.28em;text-transform:uppercase;font-weight:400;opacity:0.75;
  }

  /* ============ LIGHTBOX ============ */
  .lightbox{
    position:fixed;inset:0;z-index:200;
    background:rgba(10,10,10,0.96);
    display:flex;align-items:center;justify-content:center;
    padding:48px;
    opacity:0;pointer-events:none;transition:opacity .5s var(--ease);
  }
  .lightbox.open{opacity:1;pointer-events:auto;}
  .lightbox__img{
    max-width:100%;max-height:100%;
    background-size:contain;background-position:center;background-repeat:no-repeat;
    width:100%;height:100%;
    transform:scale(0.96);transition:transform .6s var(--ease);
  }
  .lightbox.open .lightbox__img{transform:scale(1);}
  .lightbox__close{
    position:absolute;top:24px;right:24px;
    width:44px;height:44px;
    border:1px solid rgba(255,255,255,0.4);color:var(--paper);
    display:flex;align-items:center;justify-content:center;
    font-size:18px;font-weight:300;
    transition:background .4s var(--ease);
  }
  .lightbox__close:hover{background:rgba(255,255,255,0.1);}

  /* ============ RESPONSIVE ============ */
  @media (max-width:1100px){
    :root{--sidebar-w:340px;}
    .intro{padding:120px 56px 100px;gap:64px;}
    .gallery{padding:100px 32px 120px;}
    .gallery__head{padding:0 16px;}
    .sheet{padding:100px 56px;}
    .sheet__inner{grid-template-columns:1fr;gap:48px;}
    .sheet__list{grid-template-columns:1fr 1fr;}
  }
  @media (max-width:860px){
    .sidebar{
      position:static;width:auto;height:auto;
      padding:80px 24px 40px;
      border-right:none;border-bottom:1px solid var(--rule);
    }
    .content{margin-left:0;}
    .sidebar__head{margin-top:32px;}
    .sidebar__title{font-size:36px;}
    .sidebar__footer{display:none;}
    .hero-img{height:70vh;}
    .hero-img__caption{left:24px;right:24px;bottom:20px;font-size:9px;letter-spacing:0.28em;}
    .intro{padding:80px 24px 80px;grid-template-columns:1fr;gap:32px;}
    .intro__label{writing-mode:horizontal-tb;transform:none;}
    .gallery{padding:60px 16px 80px;}
    .gallery__head{padding:0 8px;margin-bottom:40px;}

    .row-2 .gimg,.row-3 .gimg{grid-column:span 12;}
    .row-w .gimg:nth-child(1),.row-w .gimg:nth-child(2),
    .row-n .gimg:nth-child(1),.row-n .gimg:nth-child(2){grid-column:span 12;}

    .quote-block{padding:0 24px;margin:48px auto;}
    .sheet{padding:80px 24px;}
    .sheet__list{grid-template-columns:1fr;gap:24px;}
    .next{padding:100px 24px;}
    .footer{padding:60px 24px 32px;}
    .footer__top{grid-template-columns:1fr;gap:32px;}
    .footer__contact{justify-self:start;text-align:left;}
    .footer__mark{font-size:48px;}
    .footer__bottom{flex-direction:column;align-items:flex-start;gap:16px;}
  }

  /* HEADER (mobile) */
  .mobile-header{
    display:none;position:fixed;top:0;left:0;right:0;z-index:80;
    padding:18px 24px;
    background:rgba(255,255,255,0.9);
    backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
    border-bottom:1px solid var(--rule);
    justify-content:space-between;align-items:center;
  }
  @media (max-width:860px){.mobile-header{display:flex;}}

  /* REVEAL */
  .reveal{opacity:0;transform:translateY(22px);transition:opacity 1s var(--ease),transform 1s var(--ease);}
  .reveal.in{opacity:1;transform:translateY(0);}
  .reveal.d1{transition-delay:.08s;}
  .reveal.d2{transition-delay:.16s;}
  .reveal.d3{transition-delay:.24s;}


  /* ============ MOBILE MENU ============ */
  .menu-btn span{
    display:block;width:22px;height:1px;background:currentColor;
    transition:transform .4s var(--ease),opacity .3s var(--ease);
  }
  .menu-btn.open span:nth-child(1){transform:translateY(3px) rotate(45deg);}
  .menu-btn.open span:nth-child(2){transform:translateY(-3px) rotate(-45deg);}
  .mobile-menu{
    position:fixed;inset:0;z-index:105;
    background:var(--paper);color:var(--ink);
    display:flex;flex-direction:column;justify-content:space-between;
    padding:100px 24px 36px;
    opacity:0;pointer-events:none;
    transform:translateY(-8px);
    transition:opacity .45s var(--ease),transform .5s var(--ease);
    mix-blend-mode:normal;
  }
  .mobile-menu.open{opacity:1;pointer-events:auto;transform:translateY(0);}
  .mobile-menu__nav{
    display:flex;flex-direction:column;gap:0;margin-top:16px;
  }
  .mobile-menu__nav a{
    font-size:44px;font-weight:300;letter-spacing:-0.028em;line-height:1.15;
    text-transform:lowercase;
    padding:20px 0;border-bottom:1px solid var(--rule);
    display:flex;justify-content:space-between;align-items:center;
  }
  .mobile-menu__nav a .arrow{
    font-size:20px;opacity:0.5;transition:transform .5s var(--ease);
  }
  .mobile-menu__nav a:hover .arrow{transform:translateX(10px);}
  .mobile-menu__foot{
    font-size:10px;letter-spacing:0.32em;text-transform:uppercase;font-weight:400;opacity:0.55;
    display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  }
  @media (min-width:861px){
    .mobile-menu{display:none!important;}
  }