:root {
  --bg: #F4F6F8;
  --surface: #FFFFFF;
  --surface-alt: #EEF2F6;
  --text: #1F2A37;
  --text-soft: #5B6472;
  --line: #DCE2E8;

  --navy: #1E3A5F;

  --blue-bg: #E6F1FB;
  --blue-line: #85B7EB;
  --blue-text: #0C447C;

  --teal-bg: #E1F5EE;
  --teal-line: #5DCAA5;
  --teal-text: #085041;

  --coral-bg: #FAECE7;
  --coral-line: #F0997B;
  --coral-text: #993C1D;

  --red-bg: #FCEBEB;
  --red-line: #F09595;
  --red-text: #791F1F;

  --purple-bg: #EEEDFE;
  --purple-line: #AFA9EC;
  --purple-text: #3C3489;

  --radius: 14px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Noto Sans KR', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  word-break: keep-all;
  overflow-wrap: break-word;
}

.page {
  max-width: 880px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

/* Hero */
.hero {
  text-align: center;
  padding: 40px 16px 48px;
}
.eyebrow {
  letter-spacing: 0.12em;
  font-size: 13px;
  color: var(--text-soft);
  margin: 0 0 16px;
  text-transform: uppercase;
}
.hero h1 {
  font-size: 34px;
  font-weight: 900;
  margin: 0 0 20px;
  color: var(--navy);
}
.lead {
  color: var(--text-soft);
  font-size: 15px;
  margin: 0 auto 28px;
  max-width: 460px;
}
.btn-primary {
  background: var(--navy);
  color: #fff;
  border: none;
  padding: 12px 28px;
  border-radius: 100px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
}
.btn-primary:hover { opacity: 0.88; }

/* Sections */
.section {
  padding: 56px 0;
  border-top: 1px solid var(--line);
}
.section-alt {
  background: var(--surface-alt);
  margin: 0 -24px;
  padding: 56px 24px;
  border-top: none;
}
.section-eyebrow {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-soft);
  letter-spacing: 0.1em;
  margin: 0 0 8px;
}
.section h2 {
  font-size: 24px;
  font-weight: 700;
  margin: 0 0 16px;
  color: var(--navy);
}
.section-desc {
  color: var(--text-soft);
  font-size: 15px;
  max-width: 640px;
  margin: 0 0 32px;
}
.hl-coral { color: var(--coral-text); }

/* Network type cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 40px;
}
.net-card {
  border-radius: var(--radius);
  padding: 20px;
  border: 1px solid transparent;
  box-shadow: 0 1px 3px rgba(16,24,40,0.05);
}
.net-card h3 {
  font-size: 17px;
  margin: 8px 0 4px;
}
.net-card h3 small {
  font-size: 12px;
  font-weight: 400;
  opacity: 0.8;
}
.net-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: 100px;
  background: rgba(255,255,255,0.6);
}
.net-who {
  font-size: 13px;
  font-weight: 700;
  margin: 4px 0 10px;
}
.net-desc {
  font-size: 13px;
  margin: 0;
}
.net-blue  { background: var(--blue-bg);  color: var(--blue-text);  border-color: var(--blue-line); }
.net-teal  { background: var(--teal-bg);  color: var(--teal-text);  border-color: var(--teal-line); }
.net-coral { background: var(--coral-bg); color: var(--coral-text); border-color: var(--coral-line); }
.net-purple{ background: var(--purple-bg); color: var(--purple-text); border-color: var(--purple-line); }
.net-card h3 { font-size: 16px; margin: 0 0 10px; }

/* Risk box */
.risk-box {
  margin-top: 24px;
  background: var(--surface);
  border: 1px solid var(--red-line);
  border-radius: var(--radius);
  padding: 24px 28px;
  box-shadow: 0 1px 3px rgba(16,24,40,0.05);
}
.risk-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  background: var(--red-bg);
  color: var(--red-text);
  padding: 4px 14px;
  border-radius: 100px;
  margin-bottom: 12px;
}
.risk-box h3 {
  font-size: 17px;
  margin: 0 0 12px;
  color: var(--navy);
}
.risk-box p {
  font-size: 14px;
  color: var(--text-soft);
  margin: 0 0 12px;
}
.risk-list {
  margin: 0 0 16px;
  padding-left: 20px;
  font-size: 13.5px;
  color: var(--text-soft);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.risk-conclusion {
  margin: 0;
  font-size: 14px;
  color: var(--text);
  background: var(--red-bg);
  border-radius: 10px;
  padding: 12px 16px;
}
.risk-conclusion strong { color: var(--red-text); }

/* Concentric rings */
.rings-wrap {
  display: flex;
  justify-content: center;
  padding: 24px 0 12px;
}
.ring {
  border-radius: 50%;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  position: relative;
}
.ring-1 {
  width: 320px; height: 320px;
  background: var(--blue-bg);
  border: 1px solid var(--blue-line);
  padding-top: 20px;
}
.ring-2 {
  width: 220px; height: 220px;
  background: var(--teal-bg);
  border: 1px solid var(--teal-line);
  padding-top: 20px;
}
.ring-3 {
  width: 120px; height: 120px;
  background: var(--coral-bg);
  border: 1px solid var(--coral-line);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding-top: 0;
}
.ring-label {
  font-size: 13px;
  font-weight: 700;
}
.ring-1 > .ring-label { color: var(--blue-text); }
.ring-2 > .ring-label { color: var(--teal-text); }
.ring-3 .ring-label { color: var(--coral-text); }
.ring-icon {
  font-size: 12px;
  color: var(--coral-text);
  margin-top: 4px;
}
.caption {
  text-align: center;
  font-size: 13px;
  color: var(--text-soft);
  margin: 16px 0 0;
}

/* Glossary */
.glossary {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.gloss-item {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 18px 20px;
  border: 1px solid var(--line);
  box-shadow: 0 1px 3px rgba(16,24,40,0.05);
}
.gloss-item h4 {
  margin: 0 0 6px;
  font-size: 15px;
  color: var(--navy);
}
.gloss-item h4 small {
  font-weight: 400;
  font-size: 12px;
  color: var(--text-soft);
}
.gloss-item p {
  margin: 0;
  font-size: 13px;
  color: var(--text-soft);
}

/* Equipment photos */
.equip-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.equip-item {
  margin: 0;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(16,24,40,0.05);
}
.equip-item img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  display: block;
  background: var(--surface-alt);
}
.equip-item figcaption {
  padding: 14px 16px 18px;
}
.equip-item figcaption strong {
  display: block;
  font-size: 14px;
  color: var(--navy);
  margin-bottom: 8px;
}
.equip-item figcaption p {
  margin: 0;
  font-size: 12.5px;
  color: var(--text-soft);
}
.equip-list {
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 12px;
  color: var(--text-soft);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.equip-list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.equip-text {
  flex: 1;
  line-height: 1.6;
}
.equip-dot {
  flex-shrink: 0;
  display: inline-block;
  width: 9px; height: 9px;
  border-radius: 3px;
  margin-top: 5px;
}
.equip-dot-blue   { background: var(--blue-line); }
.equip-dot-purple { background: var(--purple-line); }
.equip-dot-coral  { background: var(--coral-line); }

/* Stat badges */
.stat-badges {
  display: flex;
  gap: 10px;
  margin-bottom: 24px;
}
.badge {
  font-size: 13px;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 100px;
}
.badge-blue  { background: var(--blue-bg);  color: var(--blue-text); }
.badge-coral { background: var(--coral-bg); color: var(--coral-text); }

/* Floor plan */
.floorplan {
  display: grid;
  grid-template-columns: 1fr 1fr 1.6fr 1fr;
  grid-template-rows: auto 1fr;
  gap: 12px;
  margin-bottom: 16px;
}
.fp-cell {
  border-radius: var(--radius);
  padding: 16px 18px;
  font-size: 13px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text-soft);
  display: flex;
  flex-direction: column;
  gap: 4px;
  box-shadow: 0 1px 2px rgba(16,24,40,0.04);
}
.fp-cell strong { color: var(--text); font-size: 14px; }

.fp-entrance {
  grid-column: 1 / 2;
  grid-row: 1;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--surface-alt);
  border-style: dashed;
}
.fp-room {
  grid-row: 1;
  grid-column: 4 / 5;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--surface-alt);
}
.fp-empty {
  grid-column: 2 / 4;
  grid-row: 1;
  background: transparent;
  border: 1px dashed var(--line);
  box-shadow: none;
}

.fp-general {
  grid-column: 1 / 2;
  grid-row: 2;
  background: var(--blue-bg);
  border-color: var(--blue-line);
  color: var(--blue-text);
}
.fp-general strong { color: var(--blue-text); }

.fp-dev {
  grid-column: 2 / 4;
  grid-row: 2;
  background: var(--coral-bg);
  border-color: var(--coral-line);
  color: var(--coral-text);
}
.fp-dev strong { color: var(--coral-text); }

.fp-side {
  grid-column: 4 / 5;
  grid-row: 2;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.fp-side-cell { flex: 1; }
.fp-server {
  background: var(--red-bg);
  border-color: var(--red-line);
  color: var(--red-text);
  align-items: center;
  justify-content: center;
  text-align: center;
}
.fp-server strong { color: var(--red-text); font-size: 15px; }

.fp-sub {
  font-size: 11.5px;
  opacity: 0.8;
  margin-bottom: 6px;
}
.fp-dev-groups {
  display: flex;
  gap: 28px;
  margin-top: 4px;
}
.fp-dev-group { flex: 1; }
.fp-group-label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  color: var(--coral-text);
  opacity: 0.75;
  margin-bottom: 6px;
}
.fp-dev-group ul {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12.5px;
}
.fp-cell ul {
  margin: 0;
  padding-left: 0;
  list-style: none;
}
.fp-general ul {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12.5px;
}

.fp-mobile-note {
  display: none;
  font-size: 12px;
  color: var(--text-soft);
  text-align: center;
  margin: 0 0 16px;
}

/* Legend */
.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 13px;
  color: var(--text-soft);
}
.legend-item { display: flex; align-items: center; gap: 8px; }
.dot {
  width: 12px; height: 12px;
  border-radius: 4px;
  display: inline-block;
}
.dot-blue  { background: var(--blue-line); }
.dot-coral { background: var(--coral-line); }
.dot-red   { background: var(--red-line); }

/* Two doors */
.doors {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 24px;
}
.door-row {
  display: flex;
  align-items: center;
  gap: 8px;
}
.door-box {
  flex: 1;
  text-align: center;
  border-radius: var(--radius);
  padding: 16px 8px;
  font-size: 14px;
  font-weight: 500;
  border: 1px solid var(--line);
  background: var(--surface);
}
.door-box small {
  display: block;
  font-size: 11px;
  font-weight: 400;
  color: var(--text-soft);
  margin-top: 4px;
}
.door-gate {
  background: var(--surface-alt);
  color: var(--navy);
}
.door-gate-locked {
  background: var(--coral-bg);
  color: var(--coral-text);
  border-color: var(--coral-line);
}
.door-purple { background: var(--purple-bg); color: var(--purple-text); border-color: var(--purple-line); }
.door-coral  { background: var(--coral-bg); color: var(--coral-text); border-color: var(--coral-line); }
.door-arrow {
  font-size: 18px;
  color: var(--text-soft);
}
.door-notes {
  font-size: 13px;
  color: var(--text-soft);
  padding-left: 20px;
  margin: 0;
}
.door-notes li { margin-bottom: 6px; }

/* Summary */
.summary {
  text-align: center;
}
.summary-text {
  font-size: 16px;
  font-weight: 500;
  color: var(--navy);
  max-width: 560px;
  margin: 0 auto;
}

/* Footer */
.footer {
  text-align: center;
  font-size: 12px;
  color: var(--text-soft);
  padding-top: 40px;
}

/* Section 5 card icon */
.card-icon {
  font-size: 26px;
  display: block;
  margin-bottom: 10px;
}

/* Risk items visual */
.risk-items {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 0 0 16px;
}
.risk-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 13.5px;
  color: var(--text-soft);
}
.risk-item-badge {
  flex-shrink: 0;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
  margin-top: 1px;
}
.risk-item-badge-law { background: var(--red-bg); color: var(--red-text); border: 1px solid var(--red-line); }
.risk-item-badge-sec { background: #fff3cd; color: #7a4f00; border: 1px solid #fad78a; }
.risk-item-badge-con { background: var(--purple-bg); color: var(--purple-text); border: 1px solid var(--purple-line); }

/* Compare grid (현행 망 vs 우리 망) */
.compare-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 0 12px;
  margin-bottom: 24px;
  align-items: start;
}
.compare-vs-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 52px;
}
.compare-vs {
  width: 34px; height: 34px;
  background: var(--navy);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  flex-shrink: 0;
}
.compare-col {
  border-radius: var(--radius);
  border: 1px solid var(--line);
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(16,24,40,0.05);
}
.compare-col-head {
  padding: 14px 18px;
  font-size: 14px;
  font-weight: 700;
}
.compare-col-body {
  padding: 16px 18px;
  background: var(--surface);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.compare-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13px;
  color: var(--text-soft);
  line-height: 1.65;
}
.compare-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 5px;
}
.compare-row strong { color: var(--text); }
.compare-row code {
  font-size: 11px;
  background: var(--surface-alt);
  padding: 1px 6px;
  border-radius: 4px;
  font-family: monospace;
}

/* Diff table status badges */
.diff-keep {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 9px;
  border-radius: 20px;
  background: var(--teal-bg);
  color: var(--teal-text);
  border: 1px solid var(--teal-line);
}
.diff-need {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 9px;
  border-radius: 20px;
  background: var(--coral-bg);
  color: var(--coral-text);
  border: 1px solid var(--coral-line);
}
.diff-new {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 9px;
  border-radius: 20px;
  background: var(--purple-bg);
  color: var(--purple-text);
  border: 1px solid var(--purple-line);
}

/* Checklist table */
.cl-table-wrap {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: 0 1px 3px rgba(16,24,40,0.05);
}
.cl-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.cl-table thead tr { background: var(--navy); }
.cl-table thead th {
  padding: 12px 14px;
  text-align: left;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
}
.cl-table tbody tr { border-bottom: 1px solid var(--line); }
.cl-table tbody tr:last-child { border-bottom: none; }
.cl-table tbody tr:nth-child(even) td { background: var(--surface-alt); }
.cl-table td {
  padding: 11px 14px;
  vertical-align: top;
  line-height: 1.65;
  color: var(--text-soft);
}
.cl-num { font-weight: 700; color: var(--navy); white-space: nowrap; }
.cl-name { font-weight: 700; color: var(--text); }
.cl-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  padding: 1px 7px;
  border-radius: 4px;
  margin-right: 4px;
  margin-bottom: 3px;
  background: var(--blue-bg);
  color: var(--blue-text);
}
.cl-tag-vpn  { background: var(--blue-bg);   color: var(--blue-text); }
.cl-tag-idc  { background: var(--purple-bg);  color: var(--purple-text); }
.cl-tag-pg   { background: var(--teal-bg);    color: var(--teal-text); }
.cl-tag-acc  { background: #fff3cd;           color: #7a4f00; }
.cl-tag-enc  { background: var(--purple-bg);  color: var(--purple-text); }
.cl-tag-sec  { background: var(--red-bg);     color: var(--red-text); }
.cl-tag-log  { background: var(--teal-bg);    color: var(--teal-text); }
.cl-tag-err  { background: var(--coral-bg);   color: var(--coral-text); }

/* Side navigation */
.side-nav {
  position: fixed;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 100;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 10px 8px;
  box-shadow: 0 4px 24px rgba(16, 24, 40, 0.10);
}

.side-nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 8px;
  text-decoration: none;
  color: var(--text-soft);
  transition: background 0.15s, color 0.15s;
}

.nav-link:hover {
  background: var(--surface-alt);
  color: var(--text);
}

.nav-link.active {
  background: var(--navy);
  color: #fff;
}

.nav-num {
  font-size: 10px;
  font-weight: 700;
  min-width: 22px;
  text-align: center;
  font-family: monospace;
  letter-spacing: -0.02em;
}

.nav-label {
  font-size: 11px;
  font-weight: 500;
  white-space: nowrap;
}

@media (max-width: 1160px) {
  .side-nav { display: none; }
}

@media print {
  .side-nav { display: none !important; }
  .btn-primary { display: none !important; }
  .toc-page { display: block; }
  .section {
    break-before: page;
    page-break-before: always;
  }
  .section.pdf-merge {
    break-before: auto;
    page-break-before: auto;
  }
}

/* 목차 페이지 — 화면에서는 숨기고 PDF/인쇄에서만 표시 */
.toc-page { display: none; }

.toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: 560px;
}
.toc-list li {
  display: flex;
  align-items: baseline;
  gap: 18px;
  padding: 14px 4px;
  border-bottom: 1px solid var(--line);
  font-size: 16px;
}
.toc-num {
  font-weight: 700;
  color: var(--text-soft);
  letter-spacing: 0.08em;
  min-width: 36px;
  flex-shrink: 0;
}
.toc-title { font-weight: 500; }

/* html2pdf.js 추출 시 */
body.pdf-export .btn-primary {
  display: none !important;
}

body.pdf-export .toc-page {
  display: block;
}

/* 각 섹션은 새 페이지에서 시작 */
body.pdf-export .section {
  break-before: page;
  page-break-before: always;
}

/* 카드·표·행 등 개별 요소는 페이지 경계에서 잘리지 않게 */
body.pdf-export .net-card,
body.pdf-export .gloss-item,
body.pdf-export .equip-item,
body.pdf-export .risk-box,
body.pdf-export .risk-item,
body.pdf-export .compare-col,
body.pdf-export .door-row,
body.pdf-export .tl-card,
body.pdf-export tr {
  break-inside: avoid;
  page-break-inside: avoid;
}

/* Responsive */
@media (max-width: 720px) {
  .card-grid { grid-template-columns: 1fr; }
  .glossary { grid-template-columns: 1fr; }
  .equip-grid { grid-template-columns: 1fr; }

  .floorplan {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto;
  }
  .fp-entrance { grid-column: 1 / 2; grid-row: auto; }
  .fp-empty { display: none; }
  .fp-room { grid-column: 2 / 3; grid-row: auto; }
  .fp-general { grid-column: 1 / 3; grid-row: auto; }
  .fp-dev { grid-column: 1 / 3; grid-row: auto; }
  .fp-side { grid-column: 1 / 3; grid-row: auto; flex-direction: row; }
  .fp-cell ul { font-size: 13px; }
  .fp-dev-groups { flex-direction: column; gap: 12px; }
  .fp-mobile-note { display: block; }

  .ring-1 { width: 220px; height: 220px; padding-top: 14px; }
  .ring-2 { width: 150px; height: 150px; padding-top: 14px; }
  .ring-3 { width: 84px; height: 84px; }
  .ring-icon { font-size: 11px; }
  .ring-label { font-size: 12px; }

  .door-row { flex-direction: column; }
  .door-arrow { transform: rotate(90deg); }
  .hero h1 { font-size: 26px; }

  .compare-grid { grid-template-columns: 1fr; }
  .compare-vs-wrap { padding-top: 0; }
  .compare-vs { width: 28px; height: 28px; }
  .cl-table { font-size: 12px; }
  .cl-table thead th, .cl-table td { padding: 9px 10px; }
}