:root {
  --navy: #0b2e4f;
  --navy-2: #12406b;
  --blue: #1f6feb;
  --blue-soft: #e8f0fe;
  --red: #c0392b;
  --red-soft: #fdECEA;
  --amber: #b7791f;
  --amber-soft: #fef6e6;
  --green: #1e7e46;
  --ink: #1a2733;
  --muted: #5b6b7a;
  --line: #e2e8ee;
  --bg: #f5f7fa;
  --card: #ffffff;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(16,42,67,.08), 0 8px 24px rgba(16,42,67,.06);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Malgun Gothic", "Apple SD Gothic Neo", -apple-system, system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}
.wrap { max-width: 920px; margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header {
  background: linear-gradient(135deg, var(--navy), var(--navy-2));
  color: #fff;
  box-shadow: var(--shadow);
}
.header-inner { padding: 22px 20px 0; display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-start; gap: 14px; }
.brand { display: flex; align-items: center; gap: 14px; }
.tabs { flex-basis: 100%; }
.brand-mark {
  font-weight: 800; font-size: 20px; letter-spacing: .5px;
  background: #fff; color: var(--navy);
  padding: 8px 12px; border-radius: 8px;
}
.brand h1 { margin: 0; font-size: 20px; font-weight: 700; }
.brand-sub { margin: 2px 0 0; font-size: 13px; color: #b9d0e6; }

.lang-toggle {
  display: flex; gap: 2px; background: rgba(255,255,255,.12); border-radius: 20px;
  padding: 3px; flex-shrink: 0;
}
.lang-btn {
  border: none; background: transparent; color: #cfe0f2; font-weight: 700; font-size: 13px;
  padding: 6px 14px; border-radius: 16px; cursor: pointer; font-family: inherit;
}
.lang-btn.is-active { background: #fff; color: var(--navy); }
.lang-btn:not(.is-active):hover { color: #fff; }

.tabs { display: flex; gap: 4px; margin-top: 18px; }
.tab {
  background: transparent; border: none; color: #b9d0e6;
  padding: 11px 18px; font-size: 15px; font-weight: 600;
  cursor: pointer; border-radius: 8px 8px 0 0; font-family: inherit;
  border-bottom: 3px solid transparent;
}
.tab:hover { color: #fff; }
.tab.is-active { color: #fff; background: rgba(255,255,255,.1); border-bottom-color: #fff; }

/* Panels */
main { padding: 28px 0 60px; }
.tab-panel { display: none; }
.tab-panel.is-active { display: block; animation: fade .25s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.step.hidden { display: none; }

.step-title { font-size: 20px; margin: 0 0 6px; color: var(--navy); }
.step-desc { color: var(--muted); margin: 0 0 20px; font-size: 15px; }

/* Category grid */
.category-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 14px; }
.cat-card {
  background: var(--card); border: 1.5px solid var(--line); border-radius: var(--radius);
  padding: 20px; cursor: pointer; text-align: left; font-family: inherit;
  transition: border-color .15s, transform .15s, box-shadow .15s;
}
.cat-card:hover { border-color: var(--blue); transform: translateY(-2px); box-shadow: var(--shadow); }
.cat-icon { font-size: 30px; }
.cat-label { font-size: 17px; font-weight: 700; margin: 8px 0 2px; }
.cat-en { font-size: 12px; color: var(--muted); }
.cat-depth { display: inline-block; margin-top: 10px; font-size: 11px; padding: 2px 8px; border-radius: 20px; }
.depth-detailed { background: var(--blue-soft); color: var(--blue); }
.depth-core { background: #eef7f1; color: var(--green); }
.depth-skeleton { background: #f0f2f5; color: var(--muted); }

/* Buttons */
.primary-btn {
  background: var(--blue); color: #fff; border: none; border-radius: 8px;
  padding: 12px 22px; font-size: 15px; font-weight: 700; cursor: pointer;
  font-family: inherit; transition: background .15s;
}
.primary-btn:hover { background: #1a5fd0; }
.primary-btn:disabled { background: #b9c4d0; cursor: not-allowed; }
.back-btn {
  background: none; border: none; color: var(--blue); font-size: 14px; font-weight: 600;
  cursor: pointer; padding: 0; margin-bottom: 16px; font-family: inherit;
}
.back-btn:hover { text-decoration: underline; }
.ext-btn {
  display: inline-block; background: var(--red); color: #fff; text-decoration: none;
  padding: 11px 20px; border-radius: 8px; font-weight: 700; font-size: 14px;
}
.ext-btn:hover { background: #a53125; }

/* Questions */
#questions-list { margin-bottom: 24px; }
.question { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; margin-bottom: 14px; }
.question-q { font-weight: 700; margin: 0 0 12px; font-size: 16px; }
.opt-row { display: flex; flex-wrap: wrap; gap: 8px; }
.opt {
  border: 1.5px solid var(--line); background: #fff; border-radius: 8px;
  padding: 9px 15px; cursor: pointer; font-size: 14px; font-family: inherit;
  transition: all .12s;
}
.opt:hover { border-color: var(--blue); }
.opt.selected { background: var(--blue); color: #fff; border-color: var(--blue); }

/* Result */
.result-head { background: var(--card); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); margin-bottom: 18px; border-left: 5px solid var(--blue); }
.result-head h2 { margin: 0 0 6px; color: var(--navy); font-size: 22px; }
.result-head .summary { color: var(--muted); margin: 0; }
.result-count { display: inline-block; margin-top: 12px; background: var(--blue-soft); color: var(--blue); font-weight: 700; font-size: 13px; padding: 5px 12px; border-radius: 20px; }

.note-box { border-radius: 10px; padding: 14px 16px; margin-bottom: 18px; font-size: 14px; }
.note-warn { background: var(--amber-soft); border-left: 4px solid var(--amber); color: #7a5410; }

.step-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px 20px; margin-bottom: 12px; position: relative;
}
.step-card.required { border-left: 5px solid var(--red); }
.step-card.optional { border-left: 5px solid var(--amber); }
.step-card.common { border-left: 5px solid var(--muted); }
.step-badge { font-size: 11px; font-weight: 700; padding: 2px 9px; border-radius: 20px; }
.badge-required { background: var(--red-soft); color: var(--red); }
.badge-optional { background: var(--amber-soft); color: var(--amber); }
.badge-common { background: #eef1f4; color: var(--muted); }
.step-card h3 { margin: 8px 0 4px; font-size: 16px; color: var(--ink); }
.step-en { font-size: 12px; color: var(--muted); font-weight: 600; }
.step-body { font-size: 14px; color: #34434f; margin: 8px 0 10px; }
.step-meta { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; font-size: 13px; }
.step-who { color: var(--muted); }
.step-who strong { color: var(--ink); }
.step-link { color: var(--blue); text-decoration: none; font-weight: 600; }
.step-link:hover { text-decoration: underline; }

.tips-box { background: #eef7f1; border-radius: 10px; padding: 16px 20px; margin-top: 18px; }
.tips-box h4 { margin: 0 0 8px; color: var(--green); font-size: 15px; }
.tips-box ul { margin: 0; padding-left: 18px; }
.tips-box li { font-size: 14px; margin-bottom: 6px; color: #2a4536; }

.print-btn { margin-top: 22px; }

/* Lookup */
.lookup-box { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; margin-bottom: 16px; }
.lookup-box.highlight { border-left: 5px solid var(--red); }
.lookup-box h3 { margin: 0 0 4px; font-size: 17px; }
.muted { color: var(--muted); font-size: 14px; margin: 4px 0 12px; }
.lookup-row { display: flex; gap: 8px; }
.lookup-row input {
  flex: 1; border: 1.5px solid var(--line); border-radius: 8px; padding: 11px 14px;
  font-size: 15px; font-family: inherit;
}
.lookup-row input:focus { outline: none; border-color: var(--blue); }
.lookup-results { margin-top: 14px; }
.result-item { border-top: 1px solid var(--line); padding: 12px 0; font-size: 14px; }
.result-item:first-child { border-top: none; }
.result-item .ri-title { font-weight: 700; }
.result-item .ri-meta { color: var(--muted); font-size: 13px; }
.loading, .empty { color: var(--muted); font-size: 14px; padding: 10px 0; }
.error { color: var(--red); font-size: 14px; padding: 10px 0; }
.tag { display: inline-block; font-size: 11px; font-weight: 700; padding: 2px 8px; border-radius: 6px; background: var(--blue-soft); color: var(--blue); margin-right: 6px; }

/* Glossary */
.glossary-list { margin-top: 16px; }
.gloss-item { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 14px 18px; margin-bottom: 10px; }
.gloss-term { font-weight: 800; color: var(--navy); font-size: 16px; }
.gloss-full { color: var(--muted); font-size: 13px; font-style: italic; }
.gloss-ko { margin-top: 6px; font-size: 14px; }

/* Library — 전자책 */
.ebook-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; }
.ebook-card {
  display: block; background: var(--card); border: 1px solid var(--line); border-left: 5px solid var(--navy);
  border-radius: var(--radius); padding: 16px 18px; text-decoration: none; color: inherit;
  transition: transform .15s, box-shadow .15s;
}
.ebook-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.ebook-top { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; flex-wrap: wrap; }
.ebook-cat { font-size: 11px; font-weight: 700; padding: 2px 9px; border-radius: 20px; background: var(--blue-soft); color: var(--blue); }
.ebook-lang { font-size: 11px; font-weight: 700; padding: 2px 8px; border-radius: 6px; }
.lang-KO { background: #eef7f1; color: var(--green); }
.lang-EN { background: #f0f2f5; color: var(--muted); }
.ebook-ver { font-size: 11px; color: var(--muted); margin-left: auto; }
.ebook-title { font-weight: 700; font-size: 15px; margin: 0 0 6px; line-height: 1.4; }
.ebook-title .pdf-ico { color: var(--red); }
.ebook-desc { font-size: 13px; color: var(--muted); margin: 0; }

/* Reference table */
.table-wrap { overflow-x: auto; }
.ref-table { width: 100%; border-collapse: collapse; background: var(--card); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.ref-table th { background: var(--navy); color: #fff; text-align: left; padding: 12px 16px; font-size: 14px; }
.ref-table td { padding: 11px 16px; border-top: 1px solid var(--line); font-size: 14px; }
.ref-table td.mark { color: var(--blue); font-weight: 600; }
.ref-table tr:hover td { background: #f7fafd; }

.allergen-rule { margin-top: 24px; display: grid; gap: 12px; }
.rule-card { border-radius: 10px; padding: 14px 18px; }
.rule-contains { background: #eef7f1; border-left: 4px solid var(--green); }
.rule-may { background: #f0f2f5; border-left: 4px solid var(--muted); }
.rule-card h4 { margin: 0 0 5px; font-size: 15px; }
.rule-card p { margin: 0; font-size: 14px; color: #34434f; }
.rule-mistakes { background: var(--red-soft); border-left: 4px solid var(--red); border-radius: 10px; padding: 14px 18px; }
.rule-mistakes h4 { margin: 0 0 8px; color: var(--red); font-size: 15px; }
.rule-mistakes ul { margin: 0; padding-left: 18px; }
.rule-mistakes li { font-size: 14px; margin-bottom: 5px; }
.rule-tip { background: var(--amber-soft); border-left: 4px solid var(--amber); border-radius: 10px; padding: 14px 18px; font-size: 14px; color: #7a5410; }

/* Case studies */
.case-filters { display: flex; gap: 8px; margin-bottom: 18px; flex-wrap: wrap; }
.chip {
  border: 1.5px solid var(--line); background: #fff; border-radius: 20px;
  padding: 7px 16px; font-size: 13px; font-weight: 700; cursor: pointer; font-family: inherit;
}
.chip:hover { border-color: var(--blue); }
.chip.is-active { background: var(--navy); color: #fff; border-color: var(--navy); }

.case-list { display: flex; flex-direction: column; gap: 14px; }
.case-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.case-head {
  padding: 16px 20px; cursor: pointer; display: flex; justify-content: space-between;
  align-items: center; gap: 12px;
}
.case-head:hover { background: #f7fafd; }
.case-titles { flex: 1; }
.case-title { font-weight: 800; font-size: 16px; margin: 0; color: var(--navy); }
.case-subtitle { font-size: 13px; color: var(--muted); margin: 3px 0 0; }
.case-meta-row { display: flex; gap: 6px; flex-wrap: wrap; }
.case-tag { font-size: 11px; font-weight: 700; padding: 3px 9px; border-radius: 20px; white-space: nowrap; }
.tag-cause { background: var(--red-soft); color: var(--red); }
.tag-delay { background: var(--amber-soft); color: var(--amber); }
.tag-prevent { background: #eef7f1; color: var(--green); }
.case-toggle { font-size: 13px; color: var(--blue); font-weight: 700; flex-shrink: 0; }
.case-body { padding: 0 20px 20px; display: none; border-top: 1px solid var(--line); }
.case-card.is-open .case-body { display: block; }
.case-section { margin-top: 14px; }
.case-section h4 { font-size: 13px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); margin: 0 0 6px; }
.case-section p { font-size: 14px; margin: 0; color: #34434f; }
.case-timeline { list-style: none; margin: 0; padding: 0; }
.case-timeline li { font-size: 13.5px; padding: 6px 0 6px 16px; border-left: 2px solid var(--line); position: relative; color: #34434f; }
.case-timeline li::before { content: ""; position: absolute; left: -5px; top: 11px; width: 8px; height: 8px; border-radius: 50%; background: var(--blue); }
.case-losses { display: flex; flex-wrap: wrap; gap: 6px; }
.loss-chip { font-size: 12px; background: #f0f2f5; color: #4a5560; padding: 4px 10px; border-radius: 6px; }
.case-lesson { background: var(--blue-soft); border-left: 4px solid var(--blue); border-radius: 8px; padding: 12px 16px; margin-top: 14px; font-size: 14px; font-weight: 600; color: #123a63; }

/* Generic reference table (used for food/supplement/cosmetics/FSVP quick-reference) */
.generic-table-wrap { overflow-x: auto; margin: 10px 0 6px; }
.generic-table { width: 100%; border-collapse: collapse; background: var(--card); border-radius: 10px; overflow: hidden; font-size: 13px; }
.generic-table th { background: var(--navy); color: #fff; text-align: left; padding: 10px 12px; white-space: nowrap; }
.generic-table td { padding: 9px 12px; border-top: 1px solid var(--line); }
.generic-table tr:hover td { background: #f7fafd; }

/* Claim verdict table (허용/주의/금지) */
.claim-table { display: flex; flex-direction: column; gap: 6px; margin: 10px 0; }
.claim-row { display: flex; align-items: center; gap: 10px; padding: 8px 12px; border-radius: 8px; font-size: 13.5px; }
.claim-row.v-ok { background: #eef7f1; }
.claim-row.v-caution { background: var(--amber-soft); }
.claim-row.v-banned { background: var(--red-soft); }
.claim-badge { font-size: 11px; font-weight: 800; padding: 2px 8px; border-radius: 20px; flex-shrink: 0; min-width: 42px; text-align: center; }
.v-ok .claim-badge { background: var(--green); color: #fff; }
.v-caution .claim-badge { background: var(--amber); color: #fff; }
.v-banned .claim-badge { background: var(--red); color: #fff; }
.claim-en { font-weight: 700; }
.claim-ko { color: var(--muted); }
.claim-note { font-size: 12px; color: var(--muted); margin-left: auto; }

.related-cases { margin-top: 22px; }

/* Footer */
.site-footer { background: #eceff3; border-top: 1px solid var(--line); padding: 24px 0; }
.disclaimer { font-size: 13px; color: #6a5410; background: var(--amber-soft); padding: 12px 16px; border-radius: 8px; margin: 0 0 8px; }
.verified { font-size: 12px; color: var(--muted); margin: 0; }

@media (max-width: 640px) {
  .brand h1 { font-size: 17px; }
  .tabs { overflow-x: auto; }
  .tab { padding: 10px 13px; font-size: 14px; white-space: nowrap; }
  .lookup-row { flex-direction: column; }
}

/* Print — 체크리스트 인쇄용 */
@media print {
  .site-header, .site-footer, .back-btn, .print-btn, .tab { display: none !important; }
  body { background: #fff; }
  .step-card, .result-head { box-shadow: none; border: 1px solid #ccc; }
}