:root {
  --theme-teal: #0f7f80;
  --theme-teal-dark: #0b6668;
  --theme-soft-teal: #e8f7f6;
  --theme-bg: #edf2f5;
  --theme-line: #d7dde1;
  --theme-text: #24323f;
  --theme-muted: #667085;
}

body {
  background: linear-gradient(180deg, #f4f7f9 0%, var(--theme-bg) 240px, #eaf0f3 100%);
  color: var(--theme-text);
}

.page {
  width: min(1360px, 100% - 20px);
  padding: 14px 10px 28px;
}

.site-header,
.panel,
.seo-block,
.site-footer {
  border: 1px solid var(--theme-line);
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(17, 24, 39, .06);
}

.site-header {
  border-top: 6px solid var(--theme-teal);
  padding: 14px 18px;
  margin-bottom: 14px;
}

.site-title {
  color: #17373a;
  letter-spacing: 0;
}

.tabbar {
  position: static;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 12px;
  padding: 4px;
  border: 1px solid #d9e4ea;
  border-radius: 999px;
  background: #f7fafb;
  box-shadow: none;
}

.tab-btn {
  width: auto;
  min-height: 40px;
  padding: 0 16px;
  border: 1px solid #b7dedd;
  border-radius: 999px;
  background: var(--theme-soft-teal);
  color: var(--theme-teal-dark);
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0;
  box-shadow: none;
}

.tab-btn.active {
  background: var(--theme-teal);
  border-color: var(--theme-teal);
  color: #fff;
  box-shadow: none;
}

.tab-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(15, 127, 128, .12);
}

.panel {
  overflow: hidden;
}

.panel-head {
  min-height: 0;
  padding: 10px 14px;
  background: linear-gradient(180deg, var(--theme-teal), #0d7071);
  border-radius: 12px 12px 0 0;
}

.panel-head h2 {
  font-size: 18px;
  letter-spacing: 0;
}

.panel-body {
  padding: 14px;
}

.result-panel-body {
  gap: 12px;
}

.result-card,
.stat-box,
.soft,
.upload-box,
.log,
.table-head,
.table-wrap {
  border-color: var(--theme-line);
  border-radius: 8px;
}

.result-card {
  background: linear-gradient(180deg, #fff, #fbfdfe);
}

.table-head {
  min-height: 0;
  padding: 8px 10px;
  margin: 0 0 8px;
  color: #5d6b75;
  font-size: 12px;
}

.table-wrap {
  box-shadow: none;
}

th {
  background: #f3f6f7;
}

.th-unit-price {
  background: #fff1eb;
}

.calc-formula,
#calcExplain {
  border-radius: 8px;
}

.deed-fields-shell {
  gap: 10px;
}

.deed-fields-head {
  margin-top: 0;
}

.deed-fields-toggle {
  min-height: 38px;
  padding: 0 12px;
  border: 1px solid #c8d3d8 !important;
  border-radius: 8px !important;
  background: #fff !important;
  color: #35565d !important;
  font-size: 16px;
  font-weight: 800;
}

.deed-field-card {
  border-width: 1px;
  border-radius: 8px;
}

.collapsible-block {
  margin-top: 14px;
  overflow: visible;
}

.panel.collapsible-block,
.seo-block.collapsible-block {
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  padding: 0;
}

.collapsible-details {
  display: block;
}

.collapsible-summary,
.collapsible-seo-summary {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 8px 18px;
  border: 1px solid var(--theme-line);
  border-radius: 12px;
  background: #fff;
  color: #31545c;
  cursor: pointer;
  list-style: none;
  box-shadow: none;
}

.collapsible-summary::-webkit-details-marker,
.collapsible-seo-summary::-webkit-details-marker {
  display: none;
}

.collapsible-summary h2,
.collapsible-seo-summary h2 {
  margin: 0;
  color: #31545c;
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 0;
  text-align: center;
}

.collapsible-details:not([open]) > .collapsible-summary h2::before,
.collapsible-details:not([open]) > .collapsible-seo-summary h2::before {
  content: "顯示 ";
}

.collapsible-summary::after,
.collapsible-seo-summary::after {
  content: none !important;
  display: none !important;
}

.collapsible-details:not([open]) > .collapsible-summary .panel-note {
  display: none;
}

.collapsible-details[open] {
  overflow: hidden;
  border: 1px solid var(--theme-line);
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 8px 24px rgba(17, 24, 39, .06);
}

.collapsible-details[open] > .collapsible-summary {
  justify-content: space-between;
  border-color: transparent;
  border-radius: 12px 12px 0 0;
  background: linear-gradient(180deg, var(--theme-teal), #0d7071);
  color: #fff;
}

.collapsible-details[open] > .collapsible-summary h2 {
  color: #fff;
  font-size: 18px;
}

.collapsible-details[open] > .collapsible-summary .panel-note {
  display: block;
}

.collapsible-details[open] > .collapsible-seo-summary {
  border-bottom-color: var(--theme-line);
  border-radius: 12px 12px 0 0;
}

.collapsible-details[open] > .panel-body,
.collapsible-seo-body {
  padding: 14px 18px 16px;
}

.site-footer {
  margin-top: 16px;
  padding: 14px 16px;
  color: var(--theme-muted);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.8;
}

@media (max-width: 860px) {
  .page {
    width: 100%;
    padding: 10px 8px 24px;
  }

  .site-header {
    padding: 12px;
  }

  .tabbar {
    position: sticky;
    top: 8px;
    z-index: 1200;
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
    margin-bottom: 12px;
    padding: 8px;
    border-radius: 42px 42px 24px 24px;
    background: rgba(247, 250, 251, .95);
    backdrop-filter: blur(6px);
  }

  .tab-btn {
    width: 100%;
    min-height: 50px;
    justify-content: center;
    font-size: 20px;
  }

  .panel-body {
    padding: 12px;
  }

  .result-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .table-head {
    align-items: flex-start;
    flex-direction: column;
    font-size: 12px;
  }

  .deed-fields-toggle {
    min-height: 40px;
    padding: 0 12px;
    font-size: 16px;
  }

  .collapsible-summary,
  .collapsible-seo-summary {
    min-height: 46px;
    padding: 8px 12px;
  }

  .collapsible-summary h2,
  .collapsible-seo-summary h2 {
    font-size: 20px;
  }
}

@media (max-width: 560px) {
  .site-footer {
    padding: 14px 16px;
    font-size: 13px;
  }

  .tab-btn {
    min-height: 48px;
    font-size: 19px;
  }

  .result-card {
    padding: 8px;
  }
}