:root{
    --bg:#fff; --panel:#fff; --ink:#0a0a0a; --ink2:#6e6e6e; --ink3:#a3a3a3;
    --line:#e5e5e5; --line2:#f0f0f0;
    --mark:#0a0a0a;            /* 요건 해당 — 순수 검정 */
    --mark2:#0a0a0a;           /* 발생한 상태 — 같은 검정, 형태로 구분 */
    --neg:#b00020;             /* 음수 숫자에만 쓰는 유일한 색 */
    --accent:#0a0a0a;
  }
  @media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
    --bg:#0a0a0a; --panel:#0a0a0a; --ink:#f5f5f5; --ink2:#9a9a9a; --ink3:#6a6a6a;
    --line:#242424; --line2:#181818;
    --mark:#f5f5f5; --mark2:#f5f5f5; --neg:#ff6b6b; --accent:#f5f5f5;
  }}
  :root[data-theme="dark"]{
    --bg:#0a0a0a; --panel:#0a0a0a; --ink:#f5f5f5; --ink2:#9a9a9a; --ink3:#6a6a6a;
    --line:#242424; --line2:#181818;
    --mark:#f5f5f5; --mark2:#f5f5f5; --neg:#ff6b6b; --accent:#f5f5f5;
  }
  *{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    background:var(--bg); color:var(--ink); margin:0;
    font-family:'Inter',-apple-system,"Pretendard","Apple SD Gothic Neo","Malgun Gothic",sans-serif;
    font-size:16px; line-height:1.6; letter-spacing:-0.011em;
    -webkit-font-smoothing:antialiased;
  }
  .wrap{max-width:740px;margin:0 auto;padding:0 24px 96px}

  header{padding:72px 0 44px}
  h1{
    font-size:clamp(1.75rem,4.5vw,2.3rem); line-height:1.15; margin:0 0 10px;
    letter-spacing:-0.035em; font-weight:700;
  }
  .lede{color:var(--ink2);font-size:1.02rem;margin:0;max-width:46ch;letter-spacing:-0.01em}

  .search{display:flex;gap:10px;margin:0 0 10px}
  input{
    flex:1;padding:15px 18px;font-size:1.05rem;font-family:inherit;
    border:1px solid var(--line);border-radius:12px;
    background:var(--panel);color:var(--ink);
    font-variant-numeric:tabular-nums;letter-spacing:0.01em;
    transition:border-color .15s, box-shadow .15s;
  }
  input::placeholder{color:var(--ink3);letter-spacing:-0.01em}
  input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 12%,transparent)}
  button.go{
    padding:15px 26px;font-size:.98rem;font-weight:600;font-family:inherit;
    border:0;border-radius:12px;background:var(--accent);
    color:var(--bg);cursor:pointer;letter-spacing:-0.01em;transition:opacity .15s;
  }
  button.go:hover{opacity:.85}
  .hint{color:var(--ink3);font-size:.85rem;margin:0 0 40px}

  .result{margin-top:8px;animation:rise .32s cubic-bezier(.2,.7,.3,1)}
  @keyframes rise{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
  .co{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;margin:0 0 6px}
  .co h2{font-size:1.75rem;font-weight:700;letter-spacing:-0.03em;margin:0;line-height:1.2}
  .code{
    font-size:.82rem;color:var(--ink3);font-variant-numeric:tabular-nums;
    letter-spacing:.09em;padding:4px 9px;border:1px solid var(--line);border-radius:0;
  }
  .src{color:var(--ink3);font-size:.82rem;margin:0 0 32px}

  .summary{
    display:flex;align-items:center;gap:22px;
    padding:26px 0;margin:0 0 8px;
    border-top:1px solid var(--ink);border-bottom:1px solid var(--line);
  }
  /* 신호등 — 색 없이 채움/비움으로 단계를 나타낸다 */
  .lamps{display:flex;flex-direction:column;gap:7px;flex-shrink:0}
  .lamps i{
    width:15px;height:15px;border-radius:50%;display:block;
    border:1.5px solid var(--line);background:transparent;
  }
  .lamps i.on{border-color:var(--ink);background:var(--ink)}
  .lamps i.on.mid{
    background:repeating-linear-gradient(45deg,var(--ink) 0 2px,transparent 2px 4px);
  }
  .sumtxt{flex:1;min-width:0}
  .sumtxt .n{
    font-size:2.4rem;font-weight:700;line-height:1;letter-spacing:-0.05em;
    font-variant-numeric:tabular-nums;display:block;margin-bottom:6px;
  }
  .sumtxt p{margin:0;font-size:.95rem;color:var(--ink2);letter-spacing:-0.012em}
  .sumtxt p b{color:var(--ink);font-weight:600}
  .stage{
    font-size:.72rem;font-weight:600;letter-spacing:.14em;color:var(--ink3);
    text-transform:uppercase;margin-bottom:3px;display:block;
  }

  .facts{display:flex;flex-direction:column;margin:0 0 44px}
  .fact{
    display:grid;grid-template-columns:auto 1fr;gap:0 18px;
    padding:24px 0;border-bottom:1px solid var(--line2);
  }
  .fact:last-child{border-bottom:0}
  .dot{
    width:9px;height:9px;margin-top:9px;flex-shrink:0;
    border:1.5px solid var(--ink3);background:transparent;
  }
  .fact.hit .dot{background:var(--mark);border-color:var(--mark)}
  .fact.warn .dot{border-color:var(--mark2);border-width:2px}
  .fact.ok .dot{border-radius:50%;border-color:var(--ink3)}
  .fact.note .dot{border:0;border-top:1.5px solid var(--ink3);height:0;margin-top:13px}
  .fval{font-size:1.2rem;font-weight:600;letter-spacing:-0.028em;line-height:1.3;color:var(--ink)}
  .fact.hit .fval{font-weight:700}
  .fact.note .fval{font-weight:500;color:var(--ink2);font-size:1.05rem}
  .ftrend{
    grid-column:2;font-size:.95rem;font-weight:550;color:var(--ink2);
    margin-top:5px;font-variant-numeric:tabular-nums;letter-spacing:-0.01em;
  }
  .fbasis{grid-column:2;font-size:.88rem;color:var(--ink3);margin-top:8px;line-height:1.55;max-width:54ch}

  h3{
    font-size:.76rem;font-weight:600;color:var(--ink3);margin:0 0 14px;
    text-transform:uppercase;letter-spacing:.11em;
  }
  .scroll{overflow-x:auto;margin:0 -4px;padding:0 4px}
  table{width:100%;border-collapse:collapse;font-size:.9rem;font-variant-numeric:tabular-nums}
  th,td{padding:11px 14px;text-align:right;white-space:nowrap;letter-spacing:-0.01em}
  th:first-child,td:first-child{text-align:left;padding-left:0;font-variant-numeric:normal}
  td:last-child,th:last-child{padding-right:0}
  thead th{
    font-size:.8rem;color:var(--ink3);font-weight:600;
    border-bottom:1px solid var(--line);padding-bottom:9px;
  }
  thead th:last-child{color:var(--ink);font-weight:700;border-bottom:2px solid var(--ink)}
  tbody td{border-bottom:1px solid var(--line2)}
  tbody tr:last-child td{border-bottom:0}
  tbody td:first-child{color:var(--ink2);font-size:.87rem}
  tbody td:last-child{font-weight:650}
  .neg{color:var(--neg)}

  .cta{
    display:flex;align-items:baseline;justify-content:space-between;gap:16px;
    margin:64px 0 0;padding:22px 0;border-top:1px solid var(--ink);
    text-decoration:none;color:inherit;transition:opacity .15s;
  }
  .cta:hover{opacity:.55}
  .cta b{font-size:1.02rem;font-weight:600;letter-spacing:-0.022em}
  .cta span{font-size:.82rem;color:var(--ink3);white-space:nowrap}

  .msg{
    padding:36px 24px;border:1px solid var(--line);border-radius:14px;
    color:var(--ink2);text-align:center;background:var(--panel);font-size:.95rem;
  }
  .msg b{color:var(--ink);font-weight:600}
  .disc{
    font-size:.78rem;color:var(--ink3);line-height:1.7;margin-top:56px;
    padding-top:22px;border-top:1px solid var(--line);
  }
  @media(max-width:600px){
    header{padding:48px 0 32px}
    .wrap{padding:0 18px 72px}
    .search{flex-direction:column}
    button.go{width:100%}
    .co h2{font-size:1.5rem}
  }

  h1 a{color:inherit;text-decoration:none}
  h1 a:hover{opacity:.6}

  /* 사이트 네비게이션 — 신호기가 골든스트리트의 한 메뉴임을 보인다 */
  .sitenav{
    display:flex;align-items:center;gap:14px;flex-wrap:wrap;
    padding:18px 0 0;font-size:.86rem;
  }
  .sitenav a{color:var(--ink3);text-decoration:none;transition:color .15s}
  .sitenav a:hover{color:var(--ink)}
  .sitenav a.on{color:var(--ink);font-weight:600}
  .sitenav a:first-child{font-weight:700;color:var(--ink);letter-spacing:-0.02em}
  .sitenav span{color:var(--line)}
  header{padding:40px 0 44px}

  .more{
    color:var(--ink);text-decoration:none;border-bottom:1px solid var(--line);
    white-space:nowrap;font-weight:500;
  }
  .more:hover{border-color:var(--ink)}