/* style3.css */
:root{
    --max: 1500px;
    --fg:#111;
    --muted: rgba(0,0,0,.68);
    --line: rgba(0,0,0,.12);
  }
  
  *{ box-sizing:border-box; }
  html,body{ height:100%; }
  body{
    margin:0;
    background:#fff;
    color:var(--fg);
    font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  }
  
  /* top */
  .proj-top{
    max-width: var(--max);
    margin: 0 auto;
    padding: 34px 22px 0;
    display:flex;
    justify-content:space-between;
    align-items:flex-start;
  }
  
  .proj-name{
    font-family:"GFS Didot", serif;
    font-size:54px;
    letter-spacing:-0.03em;
    line-height:1;
    text-decoration:none;
    color:inherit;
  }
  
  .proj-nav{
    display:flex;
    gap:60px;
    padding-top: 10px;
  }
  .proj-nav a{
    text-decoration:none;
    color:#111;
    font-size:18px;
  }
  .proj-nav a:hover{
    text-decoration:underline;
    text-underline-offset:6px;
  }
  
  /* layout */
  .proj-wrap{
    max-width: var(--max);
    margin: 0 auto;
    padding: 46px 22px 70px;
  }
  
  .proj-info{
    display:grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 70px;
    align-items:start;
    margin-bottom: 26px;
  }
  
  .proj-title{
    margin:0;
    font-size:22px;
    font-weight:600;
    letter-spacing:-0.01em;
  }
  
  .proj-date{
    font-size:15px;
    margin-bottom: 10px;
  }
  
  .proj-desc{
    margin:0;
    font-size:15px;
    line-height:1.6;
    color: var(--muted);
  }
  
  /* stage */
  .proj-stage{
    background:#fff;
    padding: 28px 0 8px;
  }
  .stage-inner{
    max-width: var(--max);
    margin: 0 auto;
    padding: 0 22px;
  }
  
  /* ===== SLIDER ===== */
  .slider{
    position:relative;
    width: 100%;
    display:grid;
    place-items:center;
  }
  
  .viewport{
    width: min(1300px, 92vw);
    overflow:hidden;
    background: transparent;
    border: none;
    position:relative;
    outline:none;
  }
  
  .track{
    display:flex;
    transition: transform 360ms ease;
    will-change: transform;
  }
  
  .slide{
    flex: 0 0 100%;
    display:flex;
    justify-content:center;
    align-items:center;
    padding: 18px;
  }
  
  .slide img{
    width: min(880px, 82vw);   /* controls visual size */
    height: auto;
    display:block;
    object-fit: contain;
  }
  
  /* arrows */
  .arrow{
    position:absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 32px;              /* smaller circle */
    height: 32px;
    border-radius: 999px;
    border: 1px solid rgba(0,0,0,.25);
    background: rgba(255,255,255,.95);
    color:#111;
    font-size: 20px;         /* smaller arrow glyph */
    line-height: 1;
    display:grid;
    place-items:center;
    cursor:pointer;
    user-select:none;
    z-index: 20;
  
    opacity: 0;
    pointer-events: none;
    transition: opacity .2s ease, transform .2s ease;
  }
  
  .arrow-left{ left: -22px; }
  .arrow-right{ right: -22px; }
  
  .viewport:hover ~ .arrow,
  .slider:hover .arrow{
    opacity: 1;
    pointer-events: auto;
  }
  
  .arrow:hover{
    transform: translateY(-50%) scale(1.03);
  }
  
  .arrow:disabled{
    opacity: 0 !important;
    pointer-events: none !important;
  }
  
  /* dots */
  .dots{
    margin-top: 14px;
    display:flex;
    gap:8px;
    justify-content:center;
  }
  
  .dot{
    width: 8px;
    height: 8px;
    border-radius: 999px;
    border: 1px solid rgba(0,0,0,.35);
    background: transparent;
    cursor:pointer;
  }
  
  .dot.active{
    background: rgba(0,0,0,.75);
    border-color: rgba(0,0,0,.75);
  }
  
  /* responsive */
  @media (max-width: 980px){
    .proj-info{ grid-template-columns: 1fr; gap: 18px; }
    .proj-name{ font-size:42px; }
    .proj-nav{ gap:26px; }
    .arrow{ width:40px; height:40px; }
  }