:root{
      --brand:#ff5a1f;        /* 기존 키컬러(오렌지) */
      --brand-dark:#e64b12;
      --bg:#fbf7f2;           /* 스크린샷 느낌의 따뜻한 배경 */
      --text:#111827;
      --muted:#6b7280;
      --line:#11182722;
      --card:#ffffff;
      --shadow: 0 14px 40px rgba(0,0,0,.08);
      --max: 980px;

      --font: ui-sans-serif, system-ui, -apple-system, "Apple SD Gothic Neo","Noto Sans KR",
              "Segoe UI", Roboto, Arial, "Helvetica Neue", sans-serif;
    }
    *{box-sizing:border-box}
    body{
      margin:0;
      font-family:var(--font);
      color:var(--text);
      background:var(--bg);
      line-height:1.75;
    }
    a{color:inherit; text-decoration:none}
    .container{max-width:var(--max); margin:0 auto; padding:0 20px}

    /* Top */
    .breadcrumb{
      padding:22px 0 8px;
      color:var(--muted);
      font-size:14px;
    }
    .breadcrumb .sep{opacity:.6; margin:0 6px}
    .page-title{
      text-align:center;
      font-size:44px;
      letter-spacing:-0.04em;
      margin:22px 0 28px;
      font-weight:900;
    }
    .rule{
      height:2px;
      background:rgba(17,24,39,.8);
      width:100%;
      margin:0 auto;
    }

    /* Tabs area */
    .tabs-wrap{
      padding:80px 0 70px;
      background:transparent;
    }
    .tabs{
      display:flex;
      justify-content:center;
      gap:18px;
      margin-bottom:60px;
      flex-wrap:wrap;
    }
    .tab-btn{
      appearance:none;
      border:2px solid rgba(17,24,39,.65);
      background:#fff0;
      padding:18px 36px;
      font-weight:900;
      font-size:18px;
      cursor:pointer;
      transition:.15s ease;
      letter-spacing:-0.01em;
    }
    .tab-btn[aria-selected="true"]{
      background:var(--brand);
      border-color:var(--brand);
      color:#fff;
      box-shadow:0 10px 26px rgba(255,90,31,.22);
    }
    .tab-btn:hover{
      transform: translateY(-1px);
    }

    /* Content cards */
    .panel{
      display:none;
      background:var(--card);
      border-radius:14px;
      box-shadow:var(--shadow);
      padding:44px 44px 46px;
    }
    .panel.active{display:block}

    .panel h2{
      margin:0 0 18px;
      font-size:34px;
      letter-spacing:-0.03em;
      font-weight:950;
    }
    .panel p{
      margin:0 0 16px;
      font-size:18px;
      color:#111827;
    }
    .panel .sub{
      color:var(--muted);
      font-size:15px;
      margin-top:-6px;
      margin-bottom:22px;
    }

    /* Bylaws styling */
    .article{
      margin-top:20px;
      border-top:1px solid rgba(0,0,0,.08);
      padding-top:22px;
    }
    .article h3{
      margin:18px 0 10px;
      font-size:18px;
      font-weight:900;
    }
    .article ol{
      margin:0;
      padding-left:20px;
      color:#111827;
      font-size:16px;
    }
    .article li{margin:8px 0}

    .download-row{
      margin-top:26px;
      display:flex;
      gap:12px;
      flex-wrap:wrap;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      border-radius:12px;
      padding:12px 16px;
      font-weight:900;
      border:1px solid rgba(17,24,39,.12);
      background:#fff;
      cursor:pointer;
      transition:.15s ease;
    }
    .btn.primary{
      background:var(--brand);
      color:#fff;
      border-color:var(--brand);
    }
    .btn.primary:hover{background:var(--brand-dark)}
    .btn:hover{transform:translateY(-1px)}
    .btn .icon{opacity:.9}

    /* Timeline */
    .timeline{
      margin-top:18px;
      border-top:1px solid rgba(0,0,0,.08);
      padding-top:18px;
    }
    .t-item{
      display:grid;
      grid-template-columns: 140px 1fr;
      gap:18px;
      padding:18px 0;
      border-bottom:1px solid rgba(0,0,0,.06);
    }
    .t-date{
      font-weight:950;
      color:#111827;
      letter-spacing:-0.02em;
    }
    .t-body{
      color:#111827;
      font-size:16px;
    }
    .t-tag{
      display:inline-flex;
      align-items:center;
      padding:4px 10px;
      border-radius:999px;
      font-size:12px;
      font-weight:800;
      background:rgba(255,90,31,.12);
      color:var(--brand-dark);
      margin-left:8px;
    }

    /* Responsive */
    @media (max-width:720px){
      .page-title{font-size:34px}
      .tabs-wrap{padding:54px 0 56px}
      .panel{padding:28px 20px}
      .panel h2{font-size:26px}
      .panel p{font-size:16px}
      .tab-btn{padding:14px 22px; font-size:16px}
      .t-item{grid-template-columns: 1fr; gap:6px}
      .t-date{color:var(--brand-dark)}
    }