:root{
      --bg:#f5f7fb;
      --panel:#ffffff;
      --text:#172033;
      --muted:#667085;
      --line:#e5e7eb;
      --primary:#2563eb;
      --primary-dark:#1d4ed8;
      --soft:#eef4ff;
      --ok:#16a34a;
      --radius:20px;
      --shadow:0 18px 45px rgba(15,23,42,.08);
    }
    *{box-sizing:border-box}
    html,body{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Noto Sans KR","Apple SD Gothic Neo",Arial,sans-serif;background:var(--bg);color:var(--text)}
    a{color:inherit}
    .wrap{max-width:1080px;margin:0 auto;padding:28px 18px 64px}
    .topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:22px}
    .brand{display:flex;align-items:center;gap:10px;text-decoration:none}
    .logo{width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,#2563eb,#60a5fa);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:950;box-shadow:0 10px 28px rgba(37,99,235,.26)}
    .brand-text strong{display:block;font-size:18px;line-height:1.1}
    .brand-text span{display:block;font-size:12px;color:var(--muted);margin-top:3px}
    .home-link{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);background:#fff;border-radius:999px;padding:9px 13px;text-decoration:none;color:#344054;font-size:13px;font-weight:800}
    .hero{background:radial-gradient(circle at top left,#dbeafe 0,#fff 42%,#fff 100%);border:1px solid #e8eefc;border-radius:28px;padding:30px;box-shadow:var(--shadow);overflow:hidden;position:relative}
    .hero:after{content:"";position:absolute;right:-80px;top:-80px;width:210px;height:210px;border-radius:50%;background:rgba(37,99,235,.08)}
    .hero-inner{position:relative;z-index:1;max-width:760px}
    .eyebrow{display:inline-flex;align-items:center;border:1px solid #bfdbfe;color:#1d4ed8;background:#eff6ff;border-radius:999px;padding:7px 11px;font-size:13px;font-weight:900;margin-bottom:12px}
    h1{font-size:42px;line-height:1.08;margin:0 0 12px;letter-spacing:-.04em}
    .hero p{font-size:17px;line-height:1.65;color:#475467;margin:0}
    .panel{margin-top:18px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px}
    .step-head{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;margin-bottom:16px}
    .step-title{margin:0;font-size:20px;letter-spacing:-.02em}
    .step-desc{margin:5px 0 0;color:var(--muted);font-size:14px;line-height:1.5}
    .badge{flex:0 0 auto;background:#f2f4f7;color:#344054;border-radius:999px;padding:8px 11px;font-size:12px;font-weight:900}
    .tabs{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}
    .tab,.card,.reset-btn,.primary-link{
      appearance:none;border:0;font-family:inherit;cursor:pointer
    }
    .tab{min-height:54px;border:1px solid var(--line);background:#fff;border-radius:16px;padding:12px;font-size:14px;font-weight:900;color:#344054;text-align:center;transition:.15s ease}
    .tab.active{border-color:#93c5fd;background:#eff6ff;color:#1d4ed8;box-shadow:0 8px 24px rgba(37,99,235,.10)}
    .grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
    .card{position:relative;min-height:74px;text-align:left;border:1px solid var(--line);background:#fff;border-radius:18px;padding:15px;transition:.15s ease;color:#172033}
    .card:hover,.tab:hover{transform:translateY(-1px);border-color:#bfdbfe}
    .card strong{display:block;font-size:15px;margin-bottom:4px;line-height:1.35;padding-right:42px}
    .card span{display:block;font-size:12px;color:var(--muted);line-height:1.45}
    .card.selected{border-color:#2563eb;background:#eff6ff;box-shadow:0 10px 26px rgba(37,99,235,.12)}
    .card.selected:after{
      content:"선택";
      position:absolute;top:12px;right:12px;
      background:#2563eb;color:#fff;border-radius:999px;
      padding:4px 7px;font-size:11px;font-weight:950;
    }
    .selected-strip{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
    .chip{display:none;background:#f8fafc;border:1px solid var(--line);border-radius:999px;padding:8px 10px;font-size:12px;color:#475467}
    .chip.on{display:inline-flex}
    .chip b{color:#111827;margin-right:4px}
    .input-row{display:flex;gap:10px;margin-top:12px}
    .input-row input{flex:1;border:1px solid var(--line);border-radius:14px;padding:13px 14px;font-size:15px;outline:none}
    .input-row input:focus{border-color:#93c5fd;box-shadow:0 0 0 4px #eff6ff}
    .input-row button{border:0;background:var(--primary);color:#fff;border-radius:14px;padding:0 18px;font-weight:950;cursor:pointer}
    .hidden{display:none!important}
    .progress{display:flex;gap:6px;margin:18px 0 0}
    .dot{height:7px;flex:1;border-radius:99px;background:#e5e7eb}
    .dot.on{background:var(--primary)}
    .summary{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin-bottom:16px}
    .summary div{background:#f8fafc;border:1px solid var(--line);border-radius:16px;padding:12px}
    .summary b{display:block;font-size:12px;color:#667085;margin-bottom:4px}
    .summary span{display:block;font-size:14px;font-weight:950;color:#1f2937;line-height:1.35}
    .result-box{border:1px solid #bfdbfe;background:#eff6ff;border-radius:18px;padding:18px;margin-bottom:14px}
    .result-title{font-size:20px;font-weight:950;letter-spacing:-.02em;margin:0 0 8px}
    .result-box p{margin:0;color:#475467;line-height:1.55;font-size:14px}
    .actions{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
    .primary-link{display:flex;align-items:center;justify-content:center;text-align:center;text-decoration:none;border-radius:16px;min-height:52px;font-size:14px;font-weight:950;padding:13px;background:var(--primary);color:#fff}
    .primary-link:hover{background:var(--primary-dark)}
    .primary-link.secondary{background:#fff;color:#344054;border:1px solid var(--line)}
    .reset-btn{margin-top:14px;background:#111827;color:#fff;border-radius:999px;padding:12px 16px;font-weight:950}
    .notice{margin-top:14px;color:#667085;font-size:12px;line-height:1.5}
    .db-note{margin-top:10px;font-size:12px;color:#667085;line-height:1.5}
    .footer{margin-top:22px;text-align:center;color:#98a2b3;font-size:12px}
    @media (max-width:900px){
      .tabs{grid-template-columns:repeat(2,1fr)}
      .grid{grid-template-columns:repeat(2,1fr)}
      .summary{grid-template-columns:repeat(2,1fr)}
      .actions{grid-template-columns:1fr}
      h1{font-size:34px}
      .hero{padding:24px}
    }
    @media (max-width:520px){
      .wrap{padding:18px 12px 48px}
      .topbar{align-items:flex-start}
      .home-link{padding:8px 10px}
      .hero{border-radius:22px}
      h1{font-size:30px}
      .hero p{font-size:15px}
      .panel{padding:16px;border-radius:18px}
      .tabs,.grid,.summary{grid-template-columns:1fr}
      .input-row{flex-direction:column}
      .input-row button{height:46px}
    }

.seo-section{margin-top:18px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:26px}
.seo-section h2{font-size:24px;margin:0 0 12px;letter-spacing:-.03em}
.seo-section h3{font-size:18px;margin:22px 0 10px;letter-spacing:-.02em}
.seo-section p{color:#475467;line-height:1.72;margin:0 0 12px;font-size:15px}
.seo-keyword-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:16px 0 6px}
.seo-card{border:1px solid var(--line);background:#f8fafc;border-radius:16px;padding:15px}
.seo-card strong{display:block;font-size:15px;margin-bottom:7px}
.seo-card span{display:block;color:#667085;font-size:13px;line-height:1.5}
.seo-list{margin:8px 0 0;padding-left:18px;color:#475467;line-height:1.75;font-size:15px}
.seo-faq details{border:1px solid var(--line);border-radius:16px;padding:14px 15px;background:#fff;margin-top:10px}
.seo-faq summary{font-weight:900;cursor:pointer}
.seo-faq p{margin:10px 0 0}
.seo-internal-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.seo-internal-links a{display:inline-flex;text-decoration:none;border:1px solid #bfdbfe;background:#eff6ff;color:#1d4ed8;border-radius:999px;padding:9px 12px;font-size:13px;font-weight:900}
.api-error{padding:12px;background:#fee2e2;color:#991b1b;text-align:center;font-weight:800}
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media (max-width:900px){.seo-keyword-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:520px){.seo-keyword-grid{grid-template-columns:1fr}.seo-section{padding:18px;border-radius:18px}}


/* 1단계 탭/대상 목록 통합 패치
   - PC: 기존 그리드형 탭 유지 + 상태 칩 제거
   - 모바일: 고장인가? 방식의 가로 스크롤 탭 + 바로 아래 대상 목록 표시 */
.category-filter-label {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  max-width: 100%;
  margin: 14px 0 12px;
  padding: 8px 12px;
  border-radius: 999px;
  background: #f2f4f7;
  color: #344054;
  font-size: 13px;
  font-weight: 950;
}

.target-grid {
  margin-top: 0;
}

.selected-strip,
.chip {
  display: none !important;
}

@media (max-width: 640px) {
  .tabs {
    display: flex;
    grid-template-columns: none;
    overflow-x: auto;
    gap: 10px;
    padding: 0 2px 10px;
    margin: 0 -2px;
    scroll-snap-type: x proximity;
    -webkit-overflow-scrolling: touch;
  }

  .tabs::-webkit-scrollbar {
    height: 4px;
  }

  .tabs::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 999px;
  }

  .tab {
    flex: 0 0 auto;
    min-height: 46px;
    padding: 10px 16px;
    border-radius: 999px;
    white-space: nowrap;
    scroll-snap-align: start;
    font-size: 14px;
  }

  .category-filter-label {
    margin: 8px 0 12px;
    padding: 7px 11px;
    font-size: 12px;
  }

  .target-grid {
    grid-template-columns: 1fr;
  }
}