/* ---- 교체할 링크 3개: 아래 세 값만 바꾸면 됩니다 ---- */
  :root{
    --paper:#F2F4F6; --ink:#15202B; --slate:#4A5A6A; --teal:#1F6F6B; --lime:#D9D4C7; --white:#FFFFFF;
    --kakao:#FEE500;
    --measure:68ch;
  }
  *{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:"Pretendard Variable",Pretendard,-apple-system,"Apple SD Gothic Neo","Noto Sans KR",sans-serif;font-size:17px;line-height:1.65;font-weight:400;word-break:keep-all;overflow-wrap:anywhere}
  a{color:var(--teal)}
  a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--teal);outline-offset:3px}
  .wrap{max-width:1120px;margin:0 auto;padding:0 20px}

  /* header */
  header{display:flex;align-items:center;justify-content:space-between;padding:18px 0;border-bottom:1px solid var(--lime)}
  .brand{display:flex;align-items:center;gap:12px;font-weight:600;letter-spacing:-.01em;text-decoration:none;color:var(--ink);font-size:18px}
  .brand img{flex:none;max-width:100%;height:auto}
  @media (max-width:720px){.brand img{width:300px}}
  .brand small{display:block;font-weight:400;color:var(--slate);font-size:13px;letter-spacing:0}
  nav a{color:var(--slate);text-decoration:none;margin-left:22px;font-size:15px}
  nav a:hover{color:var(--ink)}
  nav a.on{color:var(--ink);border-bottom:2px solid var(--teal);padding-bottom:2px}
  @media (max-width:720px){header{flex-direction:column;align-items:flex-start;gap:10px}nav{display:flex;flex-wrap:wrap;gap:6px 14px}nav a{margin:0;font-size:14px}}

  /* hero */
  .hero{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:start;padding:72px 0 64px}
  @media (max-width:860px){.hero{grid-template-columns:1fr;gap:40px;padding:48px 0 40px}}
  h1{font-size:clamp(34px,4.6vw,56px);line-height:1.12;font-weight:300;letter-spacing:-.025em;margin:0 0 24px}
  h1 strong{font-weight:600}
  .lede{font-size:19px;color:var(--slate);max-width:var(--measure);margin:0 0 32px}
  .cta{display:flex;gap:12px;flex-wrap:wrap}
  .btn{display:inline-block;padding:14px 20px;border-radius:6px;text-decoration:none;font-weight:600;font-size:16px;border:1.5px solid var(--ink);color:var(--ink);background:transparent}
  .btn.kakao{background:var(--kakao);border-color:var(--kakao);color:#191919}
  .btn.solid{background:var(--ink);color:var(--white)}

  /* the memorable thing: a monthly report page */
  .report{background:var(--white);border:1px solid var(--lime);box-shadow:0 1px 0 var(--lime);padding:28px 28px 22px;font-size:14.5px;line-height:1.5;position:relative}
  .report::before{content:"";position:absolute;left:0;top:0;bottom:0;width:6px;background:var(--teal)}
  .report h2{margin:0 0 2px;font-size:15px;font-weight:600}
  .report .meta{color:var(--slate);font-size:13px;margin-bottom:16px}
  .report table{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums}
  .report td{padding:7px 0;border-top:1px solid #E8EAED;vertical-align:top}
  .report td:first-child{color:var(--slate);width:64px;white-space:nowrap}
  .report td:last-child{text-align:right;white-space:nowrap;color:var(--teal);font-weight:600}
  .report tfoot td{border-top:2px solid var(--ink);font-weight:600;color:var(--ink)}
  .report .cap{margin:14px 0 0;color:var(--slate);font-size:12.5px}

  /* sections: margin-note layout */
  section{padding:56px 0;border-top:1px solid var(--lime)}
  .sec{display:grid;grid-template-columns:260px 1fr;gap:40px}
  @media (max-width:860px){.sec{grid-template-columns:1fr;gap:16px}.sec h2{position:static}}
  .sec>div,.sec>h2{min-width:0}
  .sec h2{margin:0;font-size:22px;font-weight:600;letter-spacing:-.01em;line-height:1.3;position:sticky;top:24px}
  .sec h2 span{display:block;font-weight:400;color:var(--slate);font-size:15px;margin-top:6px}
  .sec p{max-width:var(--measure);margin:0 0 16px}
  .sec ul{max-width:var(--measure);padding-left:20px;margin:0 0 16px}
  .sec li{margin:6px 0}

  /* problem list as two columns */
  .pairs{display:grid;grid-template-columns:1fr 1fr;gap:0 40px;max-width:900px}
  @media (max-width:720px){.pairs{grid-template-columns:1fr}}
  .pairs div{padding:14px 0;border-top:1px solid var(--lime)}
  .pairs div b{display:block;font-weight:600;margin-bottom:4px}
  .pairs div span{color:var(--slate);font-size:15.5px}

  /* pricing table */
  .price{width:100%;border-collapse:collapse;font-size:15.5px;font-variant-numeric:tabular-nums}
  .price th,.price td{text-align:left;vertical-align:top;padding:12px 10px;border-top:1px solid var(--lime)}
  .price th{font-weight:600;border-top:2px solid var(--ink)}
  .price th .amt{display:block;font-size:26px;font-weight:300;letter-spacing:-.02em;margin-top:4px}
  .price th .amt b{font-weight:600}
  .price td:first-child,.price th:first-child{color:var(--slate);width:150px}
  .price .hi{background:var(--white)}
  .price-wrap{overflow-x:auto}
  .note{font-size:14.5px;color:var(--slate);max-width:var(--measure)}

  /* steps (a real sequence) */
  ol.steps{counter-reset:s;list-style:none;padding:0;margin:0;max-width:760px}
  ol.steps li{counter-increment:s;display:grid;grid-template-columns:56px 1fr;gap:12px;padding:16px 0;border-top:1px solid var(--lime)}
  ol.steps li::before{content:counter(s);font-size:28px;font-weight:300;color:var(--teal);line-height:1}
  ol.steps b{display:block;font-weight:600;grid-column:2}
  ol.steps span{color:var(--slate);grid-column:2}

  /* faq */
  details{border-top:1px solid var(--lime);padding:14px 0;max-width:var(--measure)}
  summary{cursor:pointer;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:16px}
  summary::after{content:"+";color:var(--teal);font-weight:300;font-size:22px;line-height:1}
  details[open] summary::after{content:"−"}
  details p{margin:10px 0 0;color:var(--slate)}

  /* contact */
  .contact{background:var(--ink);color:var(--paper);padding:64px 0}
  .contact h2{font-size:clamp(26px,3.4vw,38px);font-weight:300;letter-spacing:-.02em;margin:0 0 12px;line-height:1.2}
  .contact p{color:#B8C2CC;max-width:var(--measure);margin:0 0 28px}
  .contact .btn{border-color:var(--paper);color:var(--paper)}
  .contact .btn.kakao{color:#191919;border-color:var(--kakao)}
  .contact dl{display:grid;grid-template-columns:auto 1fr;gap:6px 18px;margin:32px 0 0;font-size:15px;max-width:520px}
  .contact dt{color:#8A97A5}.contact dd{margin:0}
  .contact dd a{color:var(--paper)}

  footer{padding:28px 0 48px;font-size:13.5px;color:var(--slate);line-height:1.6}
  footer p{max-width:900px;margin:0 0 8px}

  .page-h{padding:56px 20px 8px}
  .page-h h1{font-size:clamp(30px,4vw,44px);margin:0 0 10px}
  .page-h p{font-size:18px;color:var(--slate);max-width:var(--measure);margin:0}
  .year{list-style:none;padding:0;margin:0;max-width:760px}
  .year li{display:grid;grid-template-columns:110px 1fr;gap:12px;padding:14px 0;border-top:1px solid var(--lime)}
  .year li span{min-width:0}
  .year li span:first-child{color:var(--teal);font-weight:600;white-space:nowrap}
  .year li span:last-child{color:var(--slate)}
  .year li span:last-child b{color:var(--ink);font-weight:600;display:block}
  table.plain{width:100%;border-collapse:collapse;font-size:15.5px;max-width:900px}
  table.plain th,table.plain td{text-align:left;vertical-align:top;padding:10px 10px;border-top:1px solid var(--lime)}
  table.plain th{font-weight:600;border-top:2px solid var(--ink)}
  table.plain td:first-child{color:var(--slate);white-space:nowrap}
  .inline-cta{margin-top:28px}