:root{
    --paper:#FBFAF7; --card:#FFFFFF; --ink:#16150F; --ink2:#4E4B41; --ink3:#8A8578;
    --rule:#E3DFD5; --rule2:#EFECE4;
    --alarm:#B03A1E; --alarm-bg:#F7E4DD;
    --live:#2C6046; --live-bg:#DFEBE4;
    --idle:#6B6759; --idle-bg:#EDEAE2;
    --wait:#8A5A12; --wait-bg:#F5E9D2;
    --accent:#B03A1E;
  }
  @media (prefers-color-scheme: dark){
    :root:not([data-theme="light"]){
      --paper:#14140F; --card:#1C1C16; --ink:#EDEAE0; --ink2:#ABA695; --ink3:#7C7768;
      --rule:#2E2D24; --rule2:#242319;
      --alarm:#E58A6B; --alarm-bg:#3A241B;
      --live:#77BE9A; --live-bg:#1B3128;
      --idle:#8F8A7A; --idle-bg:#26251C;
      --wait:#E0B063; --wait-bg:#3A2E16;
      --accent:#E58A6B;
    }
  }
  :root[data-theme="dark"]{
    --paper:#14140F; --card:#1C1C16; --ink:#EDEAE0; --ink2:#ABA695; --ink3:#7C7768;
    --rule:#2E2D24; --rule2:#242319;
    --alarm:#E58A6B; --alarm-bg:#3A241B;
    --live:#77BE9A; --live-bg:#1B3128;
    --idle:#8F8A7A; --idle-bg:#26251C;
    --wait:#E0B063; --wait-bg:#3A2E16;
    --accent:#E58A6B;
  }
  *{box-sizing:border-box}
  html{scroll-behavior:smooth}
  @media (prefers-reduced-motion: reduce){ html{scroll-behavior:auto} }
  body{margin:0; background:var(--paper); color:var(--ink);
    font-family:"Noto Sans KR",system-ui,sans-serif; font-weight:400;
    line-height:1.7; letter-spacing:-0.01em; -webkit-font-smoothing:antialiased}
  .wrap{max-width:1000px; margin:0 auto; padding:0 22px}

  .topbar{position:sticky; top:0; z-index:5; border-bottom:1px solid var(--rule); background:var(--paper)}
  .topbar .in{max-width:1000px; margin:0 auto; padding:11px 22px; display:flex; justify-content:space-between; align-items:center; gap:14px}
  .brand{font-family:"Gothic A1",sans-serif; font-weight:900; font-size:15px; letter-spacing:-0.02em; color:var(--ink); text-decoration:none; display:flex; align-items:center; gap:8px; white-space:nowrap}
  .brand svg{width:18px; height:18px; color:var(--accent)}
  .topbar nav{display:flex; gap:16px; overflow-x:auto}
  .topbar nav a{color:var(--ink2); text-decoration:none; font-size:13.5px; white-space:nowrap}
  .topbar nav a:hover{color:var(--accent)}
  @media (max-width:640px){ .topbar nav{display:none} }
  .trust{display:flex; gap:8px; flex-wrap:wrap; margin:18px 0 0}
  .trust span{font-size:12px; color:var(--ink2); background:var(--card); border:1px solid var(--rule); border-radius:2px; padding:4px 9px}
  .consent{display:flex; gap:9px; align-items:flex-start; font-size:13px; color:var(--ink2); margin:0 0 14px; max-width:none}
  .consent input{accent-color:var(--accent); width:15px; height:15px; margin:4px 0 0; flex:none}
  .site-foot{padding:34px 0 56px; border-top:1px solid var(--rule); color:var(--ink3); font-size:13px}
  .site-foot .cols{display:grid; grid-template-columns:repeat(3,1fr); gap:24px; margin-bottom:22px}
  .site-foot b{display:block; color:var(--ink); font-size:12.5px; margin-bottom:6px}
  .site-foot p{margin:0 0 6px; max-width:none}
  @media (max-width:640px){ .site-foot .cols{grid-template-columns:1fr} }
  header.top{padding:44px 0 30px}
  .kicker{font-family:"Roboto Mono",monospace; font-size:11px; letter-spacing:.18em;
    text-transform:uppercase; color:var(--ink3); margin-bottom:16px}
  h1{font-family:"Gothic A1",sans-serif; font-weight:900; font-size:clamp(32px,5.6vw,50px);
    line-height:1.12; margin:0 0 16px; letter-spacing:-0.035em; text-wrap:balance}
  .stand{font-size:16.5px; color:var(--ink2); max-width:60ch; margin:0}

  .steps{display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--rule);
    border:1px solid var(--rule); border-radius:4px; overflow:hidden; margin:28px 0 14px}
  .step{background:var(--card); padding:18px 20px}
  .step .no{font-family:"Roboto Mono",monospace; font-size:11px; letter-spacing:.15em; color:var(--accent); margin-bottom:6px}
  .step b{display:block; font-family:"Gothic A1",sans-serif; font-weight:700; font-size:16px; letter-spacing:-0.02em; margin-bottom:4px}
  .step p{margin:0; font-size:13.5px; color:var(--ink2)}
  @media (max-width:640px){ .steps{grid-template-columns:1fr} }
  .cta{display:inline-block; padding:11px 18px; font-size:14.5px; font-weight:700; border-radius:3px;
    background:var(--ink); color:var(--paper); text-decoration:none}
  .cta:hover{opacity:.92}
  .ctarow{display:flex; gap:14px; align-items:center; flex-wrap:wrap; margin:6px 0 0}
  .ctarow .note{margin:0}

  .hero{display:grid; grid-template-columns:auto 1fr; gap:26px; align-items:center;
    background:var(--card); border:1px solid var(--rule); border-radius:4px;
    padding:20px 26px; margin:26px 0 8px}
  .hero .big{font-family:"Gothic A1",sans-serif; font-weight:900; font-size:clamp(46px,9vw,74px);
    line-height:1; letter-spacing:-0.05em; color:var(--alarm)}
  .hero p{margin:0; font-size:15px; color:var(--ink2); max-width:52ch}
  @media (max-width:640px){ .hero{grid-template-columns:1fr; gap:10px} }

  section{padding:38px 0; border-top:1px solid var(--rule)}
  .eyebrow{font-family:"Roboto Mono",monospace; font-size:11px; letter-spacing:.15em;
    text-transform:uppercase; color:var(--accent); margin-bottom:9px; font-weight:500}
  h2{font-family:"Gothic A1",sans-serif; font-weight:700; font-size:clamp(21px,3vw,27px);
    margin:0 0 10px; letter-spacing:-0.03em; text-wrap:balance}
  h3{font-size:14.5px; font-weight:700; margin:26px 0 9px}
  p{margin:0 0 13px; max-width:66ch}
  p.lead{color:var(--ink2); font-size:15px; margin-bottom:20px}
  .note{font-size:13px; color:var(--ink3); max-width:70ch}
  ul,ol{margin:0 0 13px; padding-left:19px; max-width:66ch} li{margin-bottom:7px}

  .tablewrap{overflow-x:auto; margin:16px 0 6px; border:1px solid var(--rule);
    border-radius:4px; background:var(--card)}
  table{border-collapse:collapse; width:100%; font-size:13.5px; min-width:760px}
  th{text-align:left; font-weight:500; font-size:10.5px; letter-spacing:.09em;
    text-transform:uppercase; color:var(--ink3); padding:11px 13px;
    border-bottom:1px solid var(--rule); white-space:nowrap}
  td{padding:11px 13px; border-bottom:1px solid var(--rule2); vertical-align:top}
  tr:last-child td{border-bottom:0}
  td.n,th.n{text-align:right; font-family:"Roboto Mono",monospace;
    font-variant-numeric:tabular-nums; white-space:nowrap}
  .co{font-weight:700; display:block}
  .sub{color:var(--ink3); font-size:11.5px; font-weight:400; display:block; margin-top:1px}

  .tag{display:inline-block; font-size:10.5px; font-weight:700; padding:2px 7px;
    border-radius:2px; white-space:nowrap; letter-spacing:.01em}
  .t-live{background:var(--live-bg); color:var(--live)}
  .t-alarm{background:var(--alarm-bg); color:var(--alarm)}
  .t-idle{background:var(--idle-bg); color:var(--idle)}
  .t-wait{background:var(--wait-bg); color:var(--wait)}

  .callout{background:var(--card); border-left:3px solid var(--accent);
    padding:17px 21px; margin:20px 0; border-radius:0 4px 4px 0}
  .callout p:last-child{margin-bottom:0}
  .callout.warn{border-left-color:var(--alarm); background:var(--alarm-bg)}
  .callout.warn p{color:var(--ink)}

  a{color:var(--accent); text-decoration:underline; text-underline-offset:2px}
  a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--accent); outline-offset:2px}
  footer{padding:30px 0 56px; color:var(--ink3); font-size:12.5px; border-top:1px solid var(--rule)}

  .signup{background:var(--card); border:1px solid var(--rule); border-radius:4px; padding:22px 24px; margin:4px 0 14px; max-width:680px}
  .signup label.lab{display:block; font-size:11px; letter-spacing:.09em; text-transform:uppercase; color:var(--ink3); margin-bottom:7px; font-family:"Roboto Mono",monospace}
  .signup .row{display:flex; gap:8px; flex-wrap:wrap}
  .signup input[type=email]{flex:1 1 220px; min-width:0; padding:10px 12px; font-size:14.5px; font-family:inherit;
    border:1px solid var(--rule); border-radius:3px; background:var(--paper); color:var(--ink)}
  .signup button{padding:10px 18px; font-size:14px; font-weight:700; font-family:inherit; cursor:pointer;
    border:0; border-radius:3px; background:var(--ink); color:var(--paper)}
  .signup button[disabled]{opacity:.6; cursor:default}
  .signup .msg{margin:12px 0 0; font-size:13.5px; color:var(--ink2)}
  .cases{display:grid; grid-template-columns:repeat(auto-fill,minmax(150px,1fr)); gap:6px 14px; margin:8px 0 18px}
  .cases label{display:flex; align-items:center; gap:7px; font-size:13.5px; cursor:pointer}
  .cases input{accent-color:var(--accent); width:15px; height:15px; margin:0}

  .est{display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--rule); border:1px solid var(--rule); border-radius:3px; overflow:hidden; margin:0 0 14px}
  .est div{background:var(--paper); padding:10px 12px}
  .est .k{display:block; font-family:"Roboto Mono",monospace; font-size:10px; letter-spacing:.12em; text-transform:uppercase; color:var(--ink3)}
  .est b{display:block; font-family:"Gothic A1",sans-serif; font-size:20px; letter-spacing:-0.02em; margin-top:2px}
  @media (max-width:640px){ .est{grid-template-columns:1fr} }
  .faq details{border-top:1px solid var(--rule2); padding:12px 0}
  .faq details:last-child{border-bottom:1px solid var(--rule2)}
  .faq summary{cursor:pointer; font-weight:700; font-size:15px; list-style:none; display:flex; justify-content:space-between; gap:12px}
  .faq summary::-webkit-details-marker{display:none}
  .faq summary::after{content:"+"; color:var(--ink3); font-family:"Roboto Mono",monospace}
  .faq details[open] summary::after{content:"−"}
  .faq details p{margin:10px 0 0; color:var(--ink2); font-size:14px}
  #prompt-text{overflow-wrap:anywhere; word-break:break-all}
  .crumbs{font-size:12.5px; color:var(--ink3); margin:26px 0 0}
  .crumbs a{color:var(--ink3)}
  .stepbar{display:flex; gap:6px; flex-wrap:wrap; margin:14px 0 6px}
  .stepbar span{font-size:12px; padding:4px 10px; border:1px solid var(--rule); border-radius:999px; color:var(--ink3); background:var(--card)}
  .stepbar span.on{color:var(--accent); border-color:var(--accent); font-weight:700}
  .cardgrid{display:grid; grid-template-columns:repeat(auto-fill,minmax(230px,1fr)); gap:10px; margin:14px 0}
  .card{display:block; background:var(--card); border:1px solid var(--rule); border-radius:4px; padding:14px 15px; text-decoration:none; color:var(--ink)}
  .card:hover{border-color:var(--accent)}
  .card b{display:block; font-size:15px; margin-bottom:6px}
  .card .tag{margin:2px 4px 2px 0}
  .card small{display:block; color:var(--ink3); font-size:12px; margin-top:6px}
  .btnrow{display:flex; gap:10px; flex-wrap:wrap; margin:22px 0 8px}
  .btn2{display:inline-block; padding:10px 16px; border:1px solid var(--rule); border-radius:3px; text-decoration:none; color:var(--ink); background:var(--card); font-size:14px}
  .firmstep{background:var(--card); border:1px solid var(--rule); border-radius:4px; padding:14px 18px; margin:12px 0}
  .firmstep h3{margin-top:0}
  .firmstep ol{margin:8px 0}
  .kv{display:grid; grid-template-columns:110px 1fr; gap:6px 14px; font-size:14px; margin:12px 0}
  .kv dt{color:var(--ink3)}
  .kv dd{margin:0}
  #prompt-text{overflow-wrap:anywhere; word-break:break-all}