.calc-wrap, .calc-wrap *, .calc-wrap *::before, .calc-wrap *::after { box-sizing: border-box; }

.calc-wrap {
  --bg: #f5f7fb;
  --card: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --line: #e5e7eb;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --soft: #eff6ff;
  --green: #059669;
  --red: #dc2626;
  --amber: #d97706;
  --shadow: 0 12px 32px rgba(17, 24, 39, 0.08);
  font-family: "Pretendard", "Apple SD Gothic Neo", "Noto Sans KR", -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #f4f7fc 0%, #f7f9fc 100%);
  min-height: 100vh;
  margin: 0;
  padding: 24px 16px 60px;
  line-height: 1.6;
  word-break: keep-all;
}

.calc-wrap h1,
.calc-wrap h2,
.calc-wrap h3,
.calc-wrap h4,
.calc-wrap p,
.calc-wrap ul,
.calc-wrap ol,
.calc-wrap li,
.calc-wrap dl,
.calc-wrap dt,
.calc-wrap dd,
.calc-wrap figure,
.calc-wrap blockquote {
  margin: 0;
  padding: 0;
}

.calc-wrap a { color: var(--primary); text-decoration: none; }
.calc-wrap a:hover { text-decoration: underline; }
.calc-wrap img { max-width: 100%; display: block; }
.calc-wrap button,
.calc-wrap input,
.calc-wrap select,
.calc-wrap textarea { font: inherit; color: inherit; }

.calc-wrap .container { max-width: 1120px; margin: 0 auto; }

.calc-wrap .sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0,0,0,0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* breadcrumb: new */
.calc-wrap .calc-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  margin-bottom: 14px;
  color: var(--muted);
  font-size: 13px;
}
.calc-wrap .calc-breadcrumb a {
  color: var(--muted);
  text-decoration: none;
}
.calc-wrap .calc-breadcrumb a:hover {
  color: var(--primary);
  text-decoration: none;
}

/* breadcrumb: legacy */
.calc-wrap .breadcrumb {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 14px;
}
.calc-wrap .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  list-style: none;
}
.calc-wrap .breadcrumb li:not(:last-child)::after {
  content: "›";
  margin-left: 8px;
  color: #9ca3af;
}
.calc-wrap .breadcrumb-note {
  color: var(--muted);
  font-size: 14px;
}

/* hero: new */
.calc-wrap .calc-hero {
  background: linear-gradient(135deg, #0f172a 0%, #1d4ed8 100%);
  color: #fff;
  border-radius: 26px;
  padding: 28px 20px;
  box-shadow: var(--shadow);
  margin-bottom: 18px;
}
.calc-wrap .calc-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.14);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 800;
  margin-bottom: 12px;
}
.calc-wrap .calc-hero h1 {
  font-size: clamp(31px, 5vw, 44px);
  line-height: 1.18;
  letter-spacing: -0.035em;
  margin-bottom: 10px;
  font-weight: 900;
  color: #fff;
  max-width: 900px;
}
.calc-wrap .calc-hero p {
  color: rgba(255,255,255,0.92);
  font-size: 15px;
  margin-bottom: 14px;
  max-width: 960px;
}
.calc-wrap .calc-hero p strong { color: #fff; }
.calc-wrap .calc-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.calc-wrap .calc-hero__chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,0.12);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 999px;
  padding: 7px 10px;
  font-size: 12px;
  font-weight: 700;
}

/* hero: legacy */
.calc-wrap .hero { margin-bottom: 28px; }
.calc-wrap .hero-card {
  background: linear-gradient(135deg, #0f172a 0%, #1d4ed8 100%);
  color: #fff;
  border-radius: 26px;
  padding: 28px 20px;
  box-shadow: var(--shadow);
}
.calc-wrap .hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.14);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 800;
  margin-bottom: 12px;
  color: #fff;
}
.calc-wrap .hero h1 {
  font-size: clamp(31px, 5vw, 44px);
  line-height: 1.18;
  letter-spacing: -0.035em;
  margin-bottom: 10px;
  font-weight: 900;
  color: #fff;
  max-width: 900px;
}
.calc-wrap .hero p {
  color: rgba(255,255,255,0.92);
  font-size: 15px;
  margin-bottom: 14px;
  max-width: 960px;
}
.calc-wrap .hero p strong { color: #fff; }
.calc-wrap .hero-tags,
.calc-wrap .hero-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.calc-wrap .hero-tag,
.calc-wrap .pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,0.12);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 999px;
  padding: 7px 10px;
  font-size: 12px;
  font-weight: 700;
}

/* cards */
.calc-wrap .card,
.calc-wrap .ad-box,
.calc-wrap .ad-block,
.calc-wrap .calc-ad {
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  border-radius: 24px;
}

.calc-wrap .card {
  padding: 22px;
}
.calc-wrap .card + .calc-wrap .card {
  margin-top: 18px;
}

.calc-wrap .ad-box,
.calc-wrap .ad-block,
.calc-wrap .calc-ad {
  padding: 14px;
  margin-bottom: 18px;
  overflow: hidden;
}

.calc-wrap .section-title,
.calc-wrap .card-title {
  font-size: 19px;
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
  color: #111827;
}

.calc-wrap .card-title { font-size: 1.16rem; }

/* layout */
.calc-wrap .layout,
.calc-wrap .grid {
  display: grid;
  gap: 18px;
  align-items: start;
}

.calc-wrap .layout {
  grid-template-columns: minmax(0, 1.28fr) minmax(320px, 0.92fr);
}

.calc-wrap .grid {
  grid-template-columns: 1fr;
}

/* common field grids */
.calc-wrap .grid-2,
.calc-wrap .form-grid,
.calc-wrap .detail-grid,
.calc-wrap .summary {
  display: grid;
  gap: 14px;
}

.calc-wrap .grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.calc-wrap .form-grid,
.calc-wrap .detail-grid,
.calc-wrap .summary {
  grid-template-columns: 1fr;
}

.calc-wrap .field {
  margin-bottom: 14px;
}

.calc-wrap .field label {
  display: block;
  font-size: 14px;
  font-weight: 800;
  margin-bottom: 8px;
  color: #1f2937;
}

.calc-wrap .hint,
.calc-wrap .calc-help {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  color: var(--muted);
}

.calc-wrap .input-wrap {
  position: relative;
}

.calc-wrap .input-wrap .suffix {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: #9ca3af;
  font-size: 13px;
  font-weight: 800;
  pointer-events: none;
}

/* inputs */
.calc-wrap input[type="number"],
.calc-wrap input[type="text"],
.calc-wrap .input,
.calc-wrap .calc-input,
.calc-wrap .select,
.calc-wrap .calc-select {
  width: 100%;
  border: 1px solid #d1d5db;
  background: #fff;
  border-radius: 16px;
  min-height: 54px;
  padding: 14px 50px 14px 14px;
  outline: none;
  transition: border-color .2s, box-shadow .2s, background .2s;
  color: var(--text);
}

.calc-wrap .input,
.calc-wrap .calc-input,
.calc-wrap .select,
.calc-wrap .calc-select {
  padding-right: 14px;
}

.calc-wrap input[type="number"]:focus,
.calc-wrap input[type="text"]:focus,
.calc-wrap .input:focus,
.calc-wrap .calc-input:focus,
.calc-wrap .select:focus,
.calc-wrap .calc-select:focus {
  border-color: #93c5fd;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
  background: #fcfdff;
}

/* tabs */
.calc-wrap .tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 18px;
  background: #f3f4f6;
  padding: 6px;
  border-radius: 18px;
}
.calc-wrap .tab-btn {
  border: 0;
  background: transparent;
  color: #4b5563;
  border-radius: 14px;
  padding: 12px 10px;
  font-weight: 800;
  cursor: pointer;
  transition: .2s ease;
}
.calc-wrap .tab-btn.active {
  background: #fff;
  color: var(--primary-dark);
  box-shadow: 0 2px 10px rgba(37, 99, 235, 0.12);
}
.calc-wrap .tab-panel { display: none; }
.calc-wrap .tab-panel.active { display: block; }

/* buttons */
.calc-wrap .actions,
.calc-wrap .calc-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 6px;
}

.calc-wrap .btn,
.calc-wrap .calc-btn {
  border: 0;
  border-radius: 16px;
  padding: 14px 18px;
  font-weight: 800;
  cursor: pointer;
  transition: .2s ease;
  min-height: 52px;
}

.calc-wrap .btn-primary,
.calc-wrap .calc-btn--primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 10px 20px rgba(37, 99, 235, 0.18);
  flex: 1 1 180px;
}

.calc-wrap .btn-primary:hover,
.calc-wrap .calc-btn--primary:hover {
  background: var(--primary-dark);
}

.calc-wrap .btn-secondary,
.calc-wrap .calc-btn--secondary {
  background: #f3f4f6;
  color: #111827;
  flex: 1 1 120px;
}

/* result metrics */
.calc-wrap .summary {
  gap: 12px;
}

.calc-wrap .metric,
.calc-wrap .calc-stat,
.calc-wrap .detail-item,
.calc-wrap .detail-item,
.calc-wrap .info-box,
.calc-wrap .calc-inline-stats__item {
  border-radius: 18px;
}

.calc-wrap .metric {
  border: 1px solid var(--line);
  padding: 16px;
  background: linear-gradient(180deg, #fff, #fbfdff);
}

.calc-wrap .metric .k,
.calc-wrap .metric .label,
.calc-wrap .calc-stat__label {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 6px;
  font-weight: 800;
}

.calc-wrap .metric .v,
.calc-wrap .metric .value,
.calc-wrap .calc-stat__value {
  font-size: 25px;
  font-weight: 900;
  letter-spacing: -0.03em;
  word-break: break-word;
  transition: transform .2s ease, color .2s ease;
  color: var(--text);
}

.calc-wrap .metric .v.is-updated {
  transform: scale(1.015);
}

.calc-wrap .metric .sub,
.calc-wrap .calc-card__desc,
.calc-wrap .detail-item .sub {
  margin-top: 6px;
  font-size: 12px;
  color: var(--muted);
}

.calc-wrap .v.green { color: var(--green); }
.calc-wrap .v.red { color: var(--red); }

.calc-wrap .result-panel,
.calc-wrap .calc-result {
  display: grid;
  gap: 14px;
}

.calc-wrap .detail-list,
.calc-wrap .info-list,
.calc-wrap .calc-inline-stats {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.calc-wrap .detail-item {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 1px dashed var(--line);
  padding-bottom: 10px;
  font-size: 14px;
}

.calc-wrap .detail-item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.calc-wrap .detail-item strong,
.calc-wrap .detail-item .num {
  font-size: 15px;
  font-weight: 900;
  color: var(--text);
}

.calc-wrap .info-box {
  padding: 14px 16px;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  color: #1e3a8a;
  font-size: 14px;
}

.calc-wrap .calc-stat {
  background: linear-gradient(180deg, #fff, #fbfdff);
  border: 1px solid var(--line);
  padding: 16px;
}

.calc-wrap .calc-stat--primary {
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
  border-color: #93c5fd;
}

.calc-wrap .calc-inline-stats__item {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  background: #fafbfc;
  border: 1px solid var(--line);
  padding: 12px 14px;
}

.calc-wrap .calc-inline-stats__item span:first-child {
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.calc-wrap .calc-inline-stats__item strong {
  color: var(--text);
  font-size: 15px;
}

/* alerts */
.calc-wrap .alert,
.calc-wrap .error,
.calc-wrap .calc-error {
  margin-top: 14px;
  border-radius: 16px;
  padding: 14px 16px;
  font-size: 14px;
  display: none;
}

.calc-wrap .alert.show {
  display: block;
}

.calc-wrap .alert.error,
.calc-wrap .error,
.calc-wrap .calc-error {
  background: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

.calc-wrap .alert.info {
  background: #eff6ff;
  color: #1e3a8a;
  border: 1px solid #bfdbfe;
}

/* chart */
.calc-wrap .chart-card canvas,
.calc-wrap .calc-chart {
  width: 100%;
  height: 280px;
  display: block;
  background: linear-gradient(180deg, #fcfdff, #f8fbff);
  border-radius: 18px;
  border: 1px solid #edf2f7;
}

.calc-wrap .mini-note {
  margin-top: 10px;
  color: var(--muted);
  font-size: 12px;
}

/* compare / tables */
.calc-wrap .calc-compare {
  margin-top: 18px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 18px;
}

.calc-wrap .calc-table {
  width: 100%;
  min-width: 700px;
  background: #fff;
}

.calc-wrap .calc-table th,
.calc-wrap .calc-table td {
  padding: 14px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  font-size: 14px;
  vertical-align: middle;
}

.calc-wrap .calc-table th {
  background: #f8fafc;
  color: #334155;
  font-weight: 900;
}

.calc-wrap .calc-table tr:last-child td {
  border-bottom: 0;
}

.calc-wrap .calc-highlight {
  color: var(--primary);
  font-weight: 900;
}

/* content */
.calc-wrap .content h2,
.calc-wrap .faq h2,
.calc-wrap .related h2,
.calc-wrap .content h2,
.calc-wrap .faq h2 {
  font-size: 24px;
  letter-spacing: -0.03em;
  margin-bottom: 14px;
  font-weight: 900;
}

.calc-wrap .content p,
.calc-wrap .faq p,
.calc-wrap .faq li,
.calc-wrap .related p,
.calc-wrap .content p,
.calc-wrap details p {
  color: #374151;
  font-size: 15px;
  margin-bottom: 14px;
}

.calc-wrap .content strong {
  color: #111827;
}

.calc-wrap .faq-item {
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.calc-wrap .faq-item:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.calc-wrap .faq-item h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.calc-wrap .faq-list,
.calc-wrap .calc-faq {
  display: grid;
  gap: 12px;
}

.calc-wrap details,
.calc-wrap .calc-faq details {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 14px 16px;
  box-shadow: var(--shadow);
}

.calc-wrap summary,
.calc-wrap .calc-faq summary {
  cursor: pointer;
  font-weight: 900;
  list-style: none;
  color: #111827;
}

.calc-wrap summary::-webkit-details-marker,
.calc-wrap .calc-faq summary::-webkit-details-marker {
  display: none;
}

.calc-wrap .related-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 6px;
}

.calc-wrap .related-link {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 10px 14px;
  border-radius: 14px;
  background: #eff6ff;
  border: 1px solid #dbeafe;
  font-size: 14px;
  font-weight: 700;
}

.calc-wrap .footer,
.calc-wrap .calc-footer {
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  padding-top: 12px;
}

.calc-wrap .calc-footer {
  padding-bottom: 24px;
}

@media (max-width: 900px) {
  .calc-wrap .layout,
  .calc-wrap .grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .calc-wrap {
    padding: 16px 12px 42px;
  }

  .calc-wrap .calc-hero,
  .calc-wrap .hero-card,
  .calc-wrap .card,
  .calc-wrap .ad-box,
  .calc-wrap .ad-block,
  .calc-wrap .calc-ad {
    border-radius: 20px;
  }

  .calc-wrap .calc-hero,
  .calc-wrap .hero-card,
  .calc-wrap .card {
    padding: 18px;
  }

  .calc-wrap .tabs,
  .calc-wrap .grid-2,
  .calc-wrap .form-grid,
  .calc-wrap .detail-grid,
  .calc-wrap .summary {
    grid-template-columns: 1fr;
  }

  .calc-wrap .metric .v,
  .calc-wrap .metric .value,
  .calc-wrap .calc-stat__value {
    font-size: 22px;
  }

  .calc-wrap .breadcrumb {
    display: block;
    margin-bottom: 14px;
  }

  .calc-wrap .breadcrumb-note {
    display: none;
  }
}

@media (min-width: 768px) {
  .calc-wrap .calc-hero,
  .calc-wrap .hero-card {
    padding: 38px 34px;
  }

  .calc-wrap .form-grid,
  .calc-wrap .summary,
  .calc-wrap .detail-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .calc-wrap .grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(360px, 0.98fr);
  }

  .calc-wrap .card {
    padding: 24px;
  }
}