:root{
    --paper:#EFEEE6;
    --paper-2:#E7E5DA;
    --ink:#161E27;
    --ink-soft:#4A5561;
    --line:#C6C2B4;
    --line-strong:#9C978A;
    --yellow:#F5C518;
    --red:#C23B22;
    --green:#2F6F4E;
    --white:#FBFBF8;
    --radius:2px;
    --mono:'IBM Plex Mono',monospace;
    --sans:'Noto Sans KR',sans-serif;
  }
  *{box-sizing:border-box;margin:0;padding:0;}
  html{scroll-behavior:smooth;}
  body{
    background:var(--paper);
    color:var(--ink);
    font-family:var(--sans);
    line-height:1.5;
    -webkit-font-smoothing:antialiased;
  }
  @media (prefers-reduced-motion: reduce){
    *{animation-duration:0.01ms !important; animation-iteration-count:1 !important; transition-duration:0.01ms !important;}
  }
  a{color:inherit;text-decoration:none;}
  .wrap{max-width:1080px;margin:0 auto;padding:0 24px;}
  ::selection{background:var(--yellow);color:var(--ink);}

  /* ===== Perforation divider ===== */
  .perf{
    height:1px;
    background-image:repeating-linear-gradient(to right, var(--line-strong) 0 6px, transparent 6px 13px);
    margin:0;
  }
  .perf-wrap{max-width:1080px;margin:0 auto;padding:0 24px;}

  /* ===== Header ===== */
  header{
    position:sticky;top:0;z-index:50;
    background:rgba(239,238,230,0.92);
    backdrop-filter:blur(6px);
    border-bottom:1px solid var(--line);
  }
  .nav{
    display:flex;align-items:center;justify-content:space-between;
    padding:16px 24px;max-width:1080px;margin:0 auto;
  }
  .logo{
    font-family:var(--mono);font-weight:700;font-size:18px;letter-spacing:-0.02em;
    display:flex;align-items:center;gap:8px;
  }
  .logo .dot{width:7px;height:7px;background:var(--red);border-radius:50%;display:inline-block;}
  .nav-links{display:flex;gap:28px;font-size:14px;font-weight:500;color:var(--ink-soft);}
  .nav-links a:hover{color:var(--ink);}
  .nav-cta{
    font-family:var(--mono);font-size:13px;font-weight:600;
    background:var(--ink);color:var(--white);
    padding:9px 16px;border-radius:var(--radius);
    border:1px solid var(--ink);
  }
  .nav-cta:hover{background:transparent;color:var(--ink);}
  @media (max-width:760px){ .nav-links{display:none;} }

  /* ===== Hero ===== */
  .hero{padding:64px 0 48px;}
  .hero-grid{
    display:grid;grid-template-columns:1.05fr 0.95fr;gap:56px;align-items:start;
  }
  @media (max-width:900px){ .hero-grid{grid-template-columns:1fr;} }

  .eyebrow{
    font-family:var(--mono);font-size:12px;letter-spacing:0.14em;
    color:var(--ink-soft);text-transform:uppercase;
    display:flex;align-items:center;gap:8px;margin-bottom:18px;
  }
  .eyebrow::before{content:'';width:18px;height:1px;background:var(--line-strong);}

  h1{
    font-size:44px;font-weight:900;letter-spacing:-0.03em;line-height:1.18;
    margin-bottom:20px;
  }
  h1 .hl{
    background:linear-gradient(to top, var(--yellow) 38%, transparent 38%);
    padding:0 2px;
  }
  @media (max-width:760px){ h1{font-size:32px;} }

  .hero-sub{
    font-size:16px;color:var(--ink-soft);max-width:440px;margin-bottom:32px;
  }
  .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:36px;}
  .btn-primary{
    font-family:var(--mono);font-weight:600;font-size:14px;
    background:var(--ink);color:var(--white);
    padding:14px 22px;border-radius:var(--radius);
    display:inline-flex;align-items:center;gap:8px;
    border:1px solid var(--ink);
  }
  .btn-primary:hover{background:#2a3440;}
  .btn-secondary{
    font-family:var(--mono);font-weight:600;font-size:14px;
    background:transparent;color:var(--ink);
    padding:14px 22px;border-radius:var(--radius);
    border:1px solid var(--line-strong);
  }
  .btn-secondary:hover{border-color:var(--ink);}

  .trust-row{
    display:flex;gap:22px;flex-wrap:wrap;font-family:var(--mono);font-size:12px;color:var(--ink-soft);
  }
  .trust-row span{display:flex;align-items:center;gap:6px;}
  .trust-row b{color:var(--ink);font-weight:700;}

  /* ===== Receipt (signature element) ===== */
  .receipt-holder{display:flex;justify-content:center;}
  .receipt{
    width:100%;max-width:360px;background:var(--white);
    border:1px solid var(--line);
    box-shadow:0 22px 44px -20px rgba(22,30,39,0.28);
    padding:26px 22px 22px;
    position:relative;
    font-family:var(--mono);
  }
  .receipt::before,.receipt::after{
    content:'';position:absolute;left:0;right:0;height:10px;
    background:
      radial-gradient(circle at 8px 5px, var(--paper) 5px, transparent 5.5px) repeat-x;
    background-size:16px 10px;
  }
  .receipt::before{top:-5px;}
  .receipt::after{bottom:-5px;transform:rotate(180deg);}

  .r-head{text-align:center;margin-bottom:14px;}
  .r-head .t1{font-size:11px;letter-spacing:0.12em;color:var(--ink-soft);}
  .r-title{font-size:15px;font-weight:700;margin:4px 0 2px;}
  .r-head .t2{font-size:10.5px;color:var(--ink-soft);}

  .r-dash{border-top:1px dashed var(--line-strong);margin:12px 0;}

  .r-line{
    display:flex;justify-content:space-between;gap:10px;
    font-size:12.5px;padding:5px 0;color:var(--ink-soft);
    opacity:0;transform:translateY(4px);
    animation:rline 0.4s ease forwards;
  }
  .r-line .name{color:var(--ink);}
  .r-line.best{
    background:linear-gradient(to top, var(--yellow) 45%, transparent 45%);
    font-weight:700;color:var(--ink);
    padding:5px 4px;margin:2px -4px;
  }
  @keyframes rline{to{opacity:1;transform:none;}}

  .r-total{
    display:flex;justify-content:space-between;align-items:baseline;
    margin-top:14px;padding-top:12px;border-top:1px solid var(--ink);
  }
  .r-total .lbl{font-size:12px;color:var(--ink-soft);}
  .r-total .amt{font-size:24px;font-weight:700;}
  .r-total .amt small{font-size:12px;font-weight:500;}

  .stamp{
    position:absolute;top:46%;right:8px;
    font-family:var(--mono);font-weight:700;font-size:13px;
    color:var(--red);border:2px solid var(--red);
    padding:4px 8px;border-radius:4px;
    transform:rotate(-14deg);
    opacity:0;
    animation:stampIn 0.35s ease 1.9s forwards;
  }
  @keyframes stampIn{
    from{opacity:0;transform:rotate(-14deg) scale(1.6);}
    to{opacity:0.88;transform:rotate(-14deg) scale(1);}
  }
  .r-foot{margin-top:16px;text-align:center;font-size:10px;color:var(--line-strong);letter-spacing:0.08em;}

  /* ===== Section headers ===== */
  .sec{padding:64px 0;}
  .sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:32px;flex-wrap:wrap;}
  .sec-num{font-family:var(--mono);font-size:12px;color:var(--line-strong);letter-spacing:0.1em;margin-bottom:8px;}
  .sec-title{font-size:26px;font-weight:900;letter-spacing:-0.02em;}
  .sec-desc{font-size:14px;color:var(--ink-soft);max-width:420px;}

  /* ===== Category cards ===== */
  .cat-grid{
    display:grid;grid-template-columns:repeat(6,1fr);gap:1px;
    background:var(--line);border:1px solid var(--line);
  }
  @media (max-width:900px){ .cat-grid{grid-template-columns:repeat(3,1fr);} }
  @media (max-width:560px){ .cat-grid{grid-template-columns:repeat(2,1fr);} }
  .cat-card{
    background:var(--white);padding:22px 16px;
    display:flex;flex-direction:column;gap:14px;
    transition:background 0.15s;
  }
  .cat-card:hover{background:#F6F5EF;}
  .cat-code{font-family:var(--mono);font-size:11px;color:var(--line-strong);}
  .cat-name{font-size:15px;font-weight:700;}
  .cat-price{font-family:var(--mono);font-size:20px;font-weight:600;}
  .cat-price small{font-size:11px;font-weight:400;color:var(--ink-soft);}

  /* ===== Compare table ===== */
  .table-scroll{overflow-x:auto;border:1px solid var(--line);}
  table{width:100%;border-collapse:collapse;background:var(--white);min-width:680px;}
  th,td{padding:13px 16px;text-align:left;font-size:13.5px;border-bottom:1px solid var(--line);white-space:nowrap;}
  thead th{
    font-family:var(--mono);font-size:11.5px;color:var(--ink-soft);
    text-transform:uppercase;letter-spacing:0.05em;font-weight:600;
    background:var(--paper-2);border-bottom:1px solid var(--line-strong);
  }
  tbody tr:last-child td{border-bottom:none;}
  tbody tr:hover{background:#F8F7F1;}
  .provider-cell{display:flex;align-items:center;gap:10px;font-weight:700;}
  .provider-mark{width:8px;height:8px;background:var(--ink);border-radius:50%;flex:none;}
  .price-cell{font-family:var(--mono);}
  .tag-best{
    display:inline-block;font-family:var(--mono);font-size:10px;font-weight:700;
    background:var(--yellow);color:var(--ink);padding:2px 6px;margin-left:8px;border-radius:2px;
  }
  .yes{color:var(--green);font-weight:700;}
  .no{color:var(--line-strong);}

  /* ===== Calculator ===== */
  .calc-box{
    background:var(--white);border:1px solid var(--line);
    padding:32px;display:grid;grid-template-columns:1fr 1fr;gap:32px;
  }
  @media (max-width:760px){ .calc-box{grid-template-columns:1fr;padding:24px;} }
  .field{margin-bottom:18px;}
  .field label{
    display:block;font-family:var(--mono);font-size:11px;color:var(--ink-soft);
    text-transform:uppercase;letter-spacing:0.06em;margin-bottom:8px;
  }
  .seg{display:flex;border:1px solid var(--line-strong);border-radius:var(--radius);overflow:hidden;}
  .seg button{
    flex:1;padding:10px 8px;background:var(--white);border:none;
    font-family:var(--sans);font-size:13px;font-weight:500;color:var(--ink-soft);
    border-right:1px solid var(--line-strong);cursor:pointer;
  }
  .seg button:last-child{border-right:none;}
  .seg button.active{background:var(--ink);color:var(--white);font-weight:700;}
  .field input[type=range]{width:100%;accent-color:var(--ink);}
  .range-val{font-family:var(--mono);font-size:22px;font-weight:700;margin-top:4px;}
  .calc-result{background:var(--paper);border:1px dashed var(--line-strong);padding:22px;}
  .cr-row{display:flex;justify-content:space-between;font-size:13px;padding:8px 0;border-bottom:1px solid var(--line);color:var(--ink-soft);}
  .cr-row.win{color:var(--ink);font-weight:700;}
  .cr-row:last-child{border-bottom:none;}
  .cr-save{
    margin-top:14px;text-align:center;font-family:var(--mono);
    background:var(--ink);color:var(--white);padding:14px;
  }
  .cr-save .num{font-size:22px;font-weight:700;color:var(--yellow);}

  /* ===== Audience ===== */
  .aud-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);}
  @media (max-width:760px){ .aud-grid{grid-template-columns:1fr;} }
  .aud-card{background:var(--white);padding:26px;}
  .aud-icon{font-family:var(--mono);font-size:12px;color:var(--red);margin-bottom:10px;}
  .aud-title{font-size:16px;font-weight:700;margin-bottom:8px;}
  .aud-list{font-size:13px;color:var(--ink-soft);}
  .aud-list li{list-style:none;padding:3px 0;padding-left:14px;position:relative;}
  .aud-list li::before{content:'—';position:absolute;left:0;color:var(--line-strong);}

  /* ===== Guide strip ===== */
  .guide-strip{display:flex;gap:1px;background:var(--line);border:1px solid var(--line);overflow-x:auto;}
  .guide-item{
    flex:1;min-width:180px;background:var(--white);padding:20px;
  }
  .guide-item .gi-num{font-family:var(--mono);font-size:11px;color:var(--line-strong);}
  .guide-item .gi-title{font-size:14px;font-weight:700;margin-top:6px;}

  /* ===== Footer CTA ===== */
  .cta-final{
    background:var(--ink);color:var(--white);padding:64px 0;text-align:center;
  }
  .cta-final h2{font-size:28px;font-weight:900;margin-bottom:14px;letter-spacing:-0.02em;}
  .cta-final p{color:#AEB6C0;margin-bottom:28px;font-size:14px;}
  .cta-final .btn-primary{background:var(--yellow);color:var(--ink);border-color:var(--yellow);}
  .cta-final .btn-primary:hover{background:#e6b70f;}

  footer{padding:32px 0;font-family:var(--mono);font-size:11.5px;color:var(--ink-soft);}
  .foot-grid{display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px;}