@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

:root {
  --color-bg: #f5f6f8;
  --color-white: #fff;
  --color-dark: #1a1f36;
  --color-blue-600: #2563eb;
  --color-blue-500: #3b82f6;
  --color-blue-400: #60a5fa;
  --color-blue-100: #dbeafe;
  --color-blue-50: #eff6ff;
  --color-green-600: #16a34a;
  --color-green-400: #4ade80;
  --color-green-100: #dcfce7;
  --color-green-50: #f0fdf4;
  --color-red-500: #ef4444;
  --color-amber-500: #f59e0b;
  --color-amber-700: #b45309;
  --color-amber-100: #fef3c7;
  --color-amber-50: #fffbeb;
  --color-gray-900: #111827;
  --color-gray-700: #374151;
  --color-gray-600: #4b5563;
  --color-gray-500: #6b7280;
  --color-gray-400: #9ca3af;
  --color-gray-300: #d1d5db;
  --color-gray-200: #e5e7eb;
  --color-gray-100: #f3f4f6;
  --color-gray-50: #f9fafb;
  --font-sans: 'DM Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
  --max-w: 860px;
  --px: 24px;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
}

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  background: var(--color-bg);
  color: var(--color-gray-900);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }

sup.ref {
  font-size: 11px;
  font-weight: 600;
  color: var(--color-blue-600);
  margin-left: 1px;
  cursor: default;
}

sup.ref a {
  color: var(--color-blue-600);
  text-decoration: none;
}

.references li:target,
.references li.ref-highlight {
  background: var(--color-blue-50);
  border-radius: 6px;
  transition: background .3s;
}

sup.ref a:hover { text-decoration: underline; }

.site-header {
  background: #1a1f36 !important;
  color: #fff;
  padding: 56px 0 48px;
}

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--px) !important;
}

.header-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 32px;
}

.header-left { flex: 1; }

.header-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
}

.header-brand .viseo-logo { height: 36px; width: auto; }

.header-brand .label {
  font-size: 13px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-gray-400);
}

.header-title {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 12px;
}

.header-desc {
  color: var(--color-gray-300);
  font-size: 17px;
  max-width: 560px;
  line-height: 1.65;
}

.header-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 16px;
  font-size: 15px;
}

.header-meta a {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--color-gray-300);
  transition: color .15s;
}

.header-meta a:hover { color: #fff; }
.header-meta .sep { color: var(--color-gray-600); }
.header-meta svg { width: 14px; height: 14px; }

.header-right { text-align: right; flex-shrink: 0; }
.header-date { font-size: 26px; font-weight: 700; }
.header-type { font-size: 15px; color: var(--color-gray-400); margin-top: 2px; }

.stat-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: -28px;
  margin-bottom: 28px;
  position: relative;
  z-index: 10;
}

.stat-card {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.stat-card.primary { background: #2563eb !important; color: #fff; }
.stat-card .stat-label { font-size: 15px; color: var(--color-gray-500); }
.stat-card.primary .stat-label { color: rgba(255,255,255,.85); }
.stat-card .stat-value { font-size: 32px; font-weight: 700; margin-top: 4px; }
.stat-card .stat-sub { font-size: 15px; color: var(--color-gray-400); margin-top: 2px; }
.stat-card.primary .stat-sub { color: rgba(255,255,255,.75); }

section {
  margin-bottom: 40px !important;
}

.stat-cards-section {
  margin-bottom: 40px !important;
}

.card {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow);
}
.card h2 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.card h2 .dot {
  width: 8px; height: 8px;
  background: var(--color-blue-500);
  border-radius: 50%;
  flex-shrink: 0;
}

.card p { color: var(--color-gray-600); line-height: 1.7; }

.highlight-box {
  margin-top: 16px;
  padding: 16px 20px;
  background: var(--color-blue-50);
  border: 1px solid var(--color-blue-100);
  border-radius: 8px;
}

.highlight-box p { color: #1a1f36; font-size: 16px; line-height: 1.65; }
.highlight-box .hl { color: var(--color-blue-600); font-weight: 700; }

.traffic-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 28px;
}

.traffic-header h2 { margin-bottom: 4px; }
.traffic-header .sub { font-size: 15px; color: var(--color-gray-500); }
.traffic-header .date-badge { font-size: 15px; color: var(--color-gray-400); font-weight: 500; flex-shrink: 0; }

.traffic-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }

.traffic-col h3 {
  font-size: 13px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 1px;
  color: var(--color-gray-500); margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-gray-100);
}

.traffic-row {
  display: flex;
  align-items: center;
  padding: 12px 0;
}

.traffic-row:hover { background: var(--color-gray-50); border-radius: 8px; padding: 12px 8px; margin: 0 -8px; }

.traffic-row .left { display: flex; align-items: center; gap: 12px; flex: 1; min-width: 0; }
.traffic-row .icon-wrap { width: 30px; height: 30px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.traffic-row .icon-wrap svg { width: 20px; height: 20px; }
.traffic-row .name { font-weight: 500; font-size: 17px; }

.traffic-row .right {
  display: flex;
  align-items: baseline;
  justify-content: flex-end;
  gap: 0;
  flex-shrink: 0;
}

.traffic-row .value {
  font-weight: 600;
  font-size: 17px;
  font-variant-numeric: tabular-nums;
  width: 70px;
  text-align: right;
}

.traffic-row .pct {
  font-size: 14px;
  color: var(--color-gray-400);
  width: 64px;
  text-align: right;
}

.traffic-row .change {
  font-size: 14px;
  font-weight: 500;
  width: 56px;
  text-align: right;
}
.traffic-row .change.up { color: var(--color-green-600); }
.traffic-row .change.down { color: var(--color-red-500); }

.traffic-total {
  margin-top: 28px; padding-top: 28px;
  border-top: 1px solid var(--color-gray-100);
  display: flex; align-items: center; justify-content: space-between;
}

.traffic-total .left { display: flex; align-items: center; gap: 12px; }

.traffic-total .ai-badge {
  width: 40px; height: 40px;
  background: linear-gradient(135deg, #2563eb, #4f46e5) !important;
  border-radius: 8px; display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 15px;
}

.traffic-total .total-label { font-weight: 600; }
.traffic-total .total-sublabel { font-size: 15px; color: var(--color-gray-500); }
.traffic-total .total-value { font-size: 28px; font-weight: 700; color: var(--color-blue-600); }
.traffic-total .total-pct { font-size: 15px; color: var(--color-gray-500); }

.sources-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

.source-card {
  border: 1px solid var(--color-gray-200); border-radius: 8px;
  padding: 20px; transition: border-color .15s, box-shadow .15s; display: block;
}

.source-card:hover { border-color: var(--color-blue-400); box-shadow: 0 4px 12px rgba(37,99,235,.08); }
.source-card .source-top { display: flex; align-items: flex-start; justify-content: space-between; }
.source-card h4 { font-size: 17px; font-weight: 600; color: var(--color-gray-900); transition: color .15s; }
.source-card:hover h4 { color: var(--color-blue-600); }
.source-card .source-date { font-size: 14px; color: var(--color-gray-500); margin-top: 2px; }

.source-card .ext-icon {
  width: 14px; height: 14px; color: var(--color-gray-400);
  flex-shrink: 0; margin-top: 2px;
}

.source-card:hover .ext-icon { color: var(--color-blue-500); }
.source-card .source-desc { font-size: 15px; color: var(--color-gray-600); margin-top: 12px; line-height: 1.6; }

.source-card .source-badge {
  display: inline-block; margin-top: 12px;
  background: var(--color-gray-100); color: var(--color-gray-700);
  font-size: 13px; font-weight: 500; padding: 4px 8px; border-radius: 4px;
}

.method-tabs { display: flex; gap: 8px; margin-bottom: 28px; }

.method-tab {
  padding: 10px 20px; border-radius: 8px; font-size: 15px; font-weight: 500;
  border: none; cursor: pointer; font-family: var(--font-sans); transition: background .15s, color .15s;
}

.method-tab.active { background: #2563eb !important; color: #fff; }
.method-tab:not(.active) { background: var(--color-gray-100); color: var(--color-gray-600); }
.method-tab:not(.active):hover { background: var(--color-gray-200); }

.method-label { display: flex; align-items: center; gap: 10px; font-weight: 600; color: var(--color-gray-700); margin-bottom: 20px; font-size: 16px; }

.method-badge {
  width: 28px; height: 28px; border-radius: 4px;
  font-size: 14px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}

.method-badge.a { background: var(--color-blue-100); color: var(--color-blue-600); }
.method-badge.b { background: var(--color-green-100); color: var(--color-green-600); }

.calc-table { width: 100%; font-size: 15px; border-collapse: collapse; }

.calc-table thead th {
  text-align: left; padding: 12px 16px;
  font-weight: 600; color: var(--color-gray-600);
  border-bottom: 1px solid var(--color-gray-200); font-size: 14px;
}

.calc-table thead th:last-child { text-align: right; }

.calc-table tbody td {
  padding: 16px 16px;
  border-bottom: 1px solid var(--color-gray-100);
  vertical-align: middle;
}

.calc-table tbody td:first-child { font-weight: 500; width: 70px; }
.calc-table tbody td:last-child { text-align: right; font-family: var(--font-mono); font-size: 15px; }

.calc-table .result-row td {
  background: var(--color-blue-50); font-weight: 700;
  color: var(--color-blue-600); border-bottom: none;
}

.calc-table .result-row-b td {
  background: var(--color-green-50); font-weight: 700;
  color: var(--color-green-600); border-bottom: none;
}

.method-note { font-size: 15px; color: var(--color-gray-500); margin-top: 24px; line-height: 1.65; }
.method-note strong { color: var(--color-gray-700); }
.method-note .hl { color: var(--color-blue-600); font-weight: 600; }

.method-panel { display: none; }
.method-panel.active { display: block; }

.triangulation {
  background: #1a1f36 !important; color: #fff;
  border-radius: var(--radius); padding: 44px 36px;
  
}

.triangulation h2 { font-size: 22px; font-weight: 600; margin-bottom: 28px; }

.tri-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 24px; }

.tri-item { text-align: center; }

.tri-item:last-child { border-left: 1px solid rgba(255,255,255,.15); padding-left: 24px; }

.tri-value { font-size: 32px; font-weight: 700; }
.tri-value.blue { color: var(--color-blue-400); }
.tri-value.green { color: var(--color-green-400); }
.tri-label { font-size: 15px; color: var(--color-gray-400); margin-top: 4px; }

.tri-footer {
  text-align: center; margin-top: 24px;
  font-size: 15px; color: var(--color-gray-300);
  max-width: 520px; margin-left: auto; margin-right: auto; line-height: 1.6;
}

.charts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
}

.chart-block {}

.chart-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-gray-900);
  margin-bottom: 4px;
}

.chart-sub {
  font-size: 14px;
  color: var(--color-gray-500);
  margin-bottom: 20px;
  line-height: 1.5;
}

.chart-area {
  background: var(--color-gray-50);
  border-radius: 8px;
  padding: 16px;
}

.chart-svg {
  width: 100%;
  height: auto;
  display: block;
}

.chart-note {
  font-size: 14px;
  color: var(--color-gray-500);
  margin-top: 12px;
  line-height: 1.55;
}

.caveats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.caveat {
  border: 1px solid var(--color-gray-200); border-radius: 8px;
  padding: 20px; transition: border-color .15s, background .15s, box-shadow .15s;
  cursor: pointer; user-select: none;
}

.caveat:hover { border-color: var(--color-blue-400); background: var(--color-blue-50); box-shadow: 0 2px 8px rgba(37,99,235,.06); }

.caveat-inner { display: flex; align-items: center; gap: 12px; }

.caveat-num {
  width: 28px; height: 28px;
  background: var(--color-blue-100); color: var(--color-blue-600);
  border-radius: 6px; font-size: 13px; font-weight: 700;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}

.caveat-content { flex: 1; }
.caveat-title { font-weight: 600; font-size: 15px; color: var(--color-gray-900); }
.caveat-summary { font-size: 14px; color: var(--color-gray-500); margin-top: 4px; }

.caveat-detail {
  font-size: 14px; color: var(--color-gray-600); line-height: 1.6;
  margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--color-gray-100);
  display: none;
}

.caveat.open .caveat-detail { display: block; }

.caveat-chevron {
  width: 18px; height: 18px; color: var(--color-gray-400);
  flex-shrink: 0;
  transition: transform .2s;
}

.caveat.open .caveat-chevron { transform: rotate(180deg); }

.cta-section {
  background: #1a1f36 !important;
  color: #fff; border-radius: var(--radius); padding: 44px 36px 24px;
  
}

.cta-section h2 { font-size: 22px; font-weight: 600; margin-bottom: 12px; }
.cta-section .cta-intro { color: rgba(255,255,255,.85); margin-bottom: 24px; font-size: 17px; }

.inline-link-box {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 20px 0 6px;
  margin: 24px 0 0;
  border-top: 1px solid rgba(255,255,255,.12);
  color: rgba(255,255,255,.55) !important;
  font-size: 14px;
  line-height: 1.5;
  transition: color .15s;
}

.inline-link-box:hover {
  color: rgba(255,255,255,.9) !important;
}

.inline-link-box svg { flex-shrink: 0; color: rgba(255,255,255,.5); }
.inline-link-box:hover svg { color: rgba(255,255,255,.9); }
.inline-link-box span { flex: none; }
.inline-link-box strong { color: rgba(255,255,255,.85); }

.formula-box {
  background: rgba(255,255,255,.1); border-radius: 8px;
  padding: 24px; text-align: center;
}

.formula-box .formula-label { color: rgba(255,255,255,.8); font-family: var(--font-mono); font-size: 16px; }
.formula-box .formula-value { font-family: var(--font-mono); font-size: 18px; font-weight: 700; margin-top: 4px; }

.cta-tips { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 24px; }

.cta-tip { background: rgba(255,255,255,.1); border-radius: 8px; padding: 16px; }
.cta-tip .tip-title { font-weight: 600; font-size: 16px; margin-bottom: 4px; }
.cta-tip .tip-desc { font-size: 15px; color: rgba(255,255,255,.8); line-height: 1.55; }

.calc-widget { margin-top: 24px; }

.calc-input-group { margin-bottom: 24px; }

.calc-label {
  display: block;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-gray-900);
  margin-bottom: 10px;
}

.calc-input-wrap {
  display: flex;
  gap: 12px;
}

.calc-input {
  flex: 1;
  padding: 14px 18px;
  border: 2px solid var(--color-gray-200);
  border-radius: 8px;
  font-size: 17px;
  font-family: var(--font-sans);
  color: var(--color-gray-900);
  outline: none;
  transition: border-color .15s;
  -moz-appearance: textfield;
}

.calc-input::-webkit-outer-spin-button,
.calc-input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }

.calc-input:focus { border-color: var(--color-blue-500); }

.calc-input::placeholder { color: var(--color-gray-400); }

.calc-btn {
  padding: 14px 32px;
  background: #2563eb !important;
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: background .15s, transform .1s;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.calc-btn:hover { background: #1d4ed8 !important; }
.calc-btn:active { transform: scale(.97); }

.chart-bar { transition: opacity .15s; cursor: pointer; }
.chart-bar-group:hover .chart-bar { opacity: .75; }
.chart-bar-group { cursor: pointer; }

.chart-tooltip {
  position: absolute;
  background: #1a1f36;
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 6px;
  pointer-events: none;
  white-space: nowrap;
  transform: translate(-50%, -100%);
  margin-top: -8px;
  opacity: 0;
  transition: opacity .15s;
  z-index: 20;
}

.chart-tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -5px;
  border: 5px solid transparent;
  border-top-color: #1a1f36;
}

.chart-area { position: relative; }

.contact-cta-btn:hover { background: #1d4ed8 !important; }
.contact-cta-btn:active { transform: scale(.97); }

.method-tab { transition: background .15s, color .15s; }

.calc-results {
  background: var(--color-gray-50);
  border-radius: 12px;
  padding: 28px;
  overflow: hidden;
}

.calc-result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 20px;
}

.calc-result-item {
  text-align: center;
  padding: 20px 16px;
  border-radius: 8px;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.calc-result-item.primary {
  background: #2563eb !important;
  border-color: #2563eb !important;
  color: #fff !important;
}

.calc-result-label {
  font-size: 13px;
  color: var(--color-gray-500);
  margin-bottom: 8px;
}

.calc-result-item.primary .calc-result-label { color: rgba(255,255,255,.85) !important; }

.calc-result-value {
  font-size: 28px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: inherit !important;
}

.calc-result-sub {
  font-size: 13px;
  color: var(--color-gray-400);
  margin-top: 4px;
}

.calc-result-item.primary .calc-result-sub { color: rgba(255,255,255,.75) !important; }
.calc-result-item.primary .calc-result-value { color: #fff !important; }

.calc-disclaimer {
  font-size: 13px;
  color: var(--color-gray-500);
  margin-top: 16px;
  line-height: 1.5;
  text-align: center;
}

.contact-cta {
  background: #1a1f36 !important;
  border-radius: var(--radius);
  padding: 48px 40px;
  
}

.contact-cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.contact-cta-text { flex: 1; }

.contact-cta-text h2 {
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}

.contact-cta-text p {
  font-size: 15px;
  color: var(--color-gray-300);
  line-height: 1.65;
  max-width: 520px;
}

.contact-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: #2563eb !important;
  color: #fff;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  font-family: var(--font-sans);
  transition: background .15s, transform .1s;
  white-space: nowrap;
  flex-shrink: 0;
  cursor: pointer;
}

.references ol { list-style: none; }

.references li { display: flex; align-items: flex-start; gap: 8px; margin-bottom: 12px; }

.references .ref-num {
  font-family: var(--font-mono); font-size: 13px;
  color: var(--color-gray-400); margin-top: 3px; flex-shrink: 0;
}

.references a {
  font-size: 15px; color: var(--color-blue-600); transition: color .15s;
  display: inline-flex; align-items: center; gap: 4px;
}

.references a:hover { color: #1d4ed8; text-decoration: underline; }
.references a svg { width: 11px; height: 11px; flex-shrink: 0; }

.site-footer { background: #1a1f36 !important; color: #fff; padding: 32px 0; margin-top: 56px; }

.footer-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap;
}

.footer-left { display: flex; align-items: center; gap: 14px; }
.footer-left .viseo-logo { height: 28px; width: auto; }
.footer-left span { font-size: 15px; color: var(--color-gray-400); }

.footer-links { display: flex; align-items: center; gap: 20px; font-size: 15px; }

.footer-links a {
  color: var(--color-gray-400); transition: color .15s;
  display: flex; align-items: center; gap: 6px;
}

.footer-links a:hover { color: #fff; }
.footer-links a svg { width: 14px; height: 14px; }

@media (max-width: 640px) {
  :root { --px: 16px; }

  section { margin-bottom: 28px !important; }

  .site-header { padding: 36px 0 40px; }
  .header-inner { flex-direction: column; text-align: center; }
  .header-title { font-size: 24px; }
  .header-right { display: none; }
  .header-desc { font-size: 15px; margin-left: auto; margin-right: auto; }
  .header-meta { flex-wrap: wrap; gap: 8px; justify-content: center; }
  .header-brand { justify-content: center; }
  .header-brand .viseo-logo { height: 28px; }

  .stat-cards { grid-template-columns: 1fr; gap: 12px; }
  .stat-card { padding: 20px; text-align: center; }
  .stat-card .stat-value { font-size: 26px; }

  .card { padding: 20px; }
  .card h2 { font-size: 18px; }

  .traffic-header { flex-direction: column; gap: 4px; }
  .traffic-header .date-badge { align-self: flex-start; }
  .traffic-grid { grid-template-columns: 1fr; gap: 24px; }
  .traffic-row .value { width: 56px; font-size: 14px; }
  .traffic-row .pct { width: 50px; font-size: 12px; }
  .traffic-row .change { width: 44px; font-size: 12px; }
  .traffic-row .name { font-size: 15px; }
  .traffic-total { flex-direction: row; gap: 12px; align-items: center; }
  .traffic-total .total-value { font-size: 22px; }

  .charts-grid { grid-template-columns: 1fr; gap: 28px; }

  .sources-grid { grid-template-columns: 1fr; }
  .source-card { padding: 16px; }

  .method-tabs { display: flex; width: 100%; }
  .method-tab { font-size: 14px; padding: 10px 0; flex: 1; text-align: center; }
  .method-label { display: none; }

  .calc-table { border-collapse: separate; border-spacing: 0 8px; }
  .calc-table thead { display: none; }
  .calc-table tbody { display: flex; flex-direction: column; gap: 8px; }
  .calc-table tbody tr {
    display: flex; align-items: center;
    background: var(--color-gray-50);
    border-radius: 8px;
    padding: 14px 16px;
  }
  .calc-table tbody td { display: block; padding: 0; border: none; text-align: left !important; width: auto !important; }
  .calc-table tbody td:first-child {
    font-size: 13px; font-weight: 700;
    color: var(--color-gray-400);
    width: 28px !important; flex-shrink: 0;
  }
  .calc-table tbody td:nth-child(2) {
    font-size: 15px; font-weight: 500;
    color: var(--color-gray-900);
    flex: 1;
  }
  .calc-table tbody td:last-child {
    font-size: 17px !important; font-weight: 700;
    color: var(--color-blue-600);
    text-align: right !important;
    flex-shrink: 0;
    margin-left: 12px;
  }
  .calc-table .result-row,
  .calc-table .result-row-b {
    background: var(--color-blue-50);
    border: 2px solid var(--color-blue-600);
  }
  .calc-table .result-row td, .calc-table .result-row-b td { background: none; }
  .calc-table .result-row td:first-child,
  .calc-table .result-row-b td:first-child { display: none; }
  .calc-table .result-row td:nth-child(2) { color: var(--color-blue-600); font-weight: 600; }
  .calc-table .result-row td:last-child { font-size: 20px !important; }
  .calc-table .result-row-b {
    border-color: var(--color-green-600); background: var(--color-green-50);
  }
  .calc-table .result-row-b td:nth-child(2) { color: var(--color-green-600); font-weight: 600; }
  .calc-table .result-row-b td:last-child { font-size: 20px !important; color: var(--color-green-600); }

  .method-note { font-size: 15px; margin-top: 20px; }

  .triangulation { padding: 28px 20px; }
  .tri-grid { grid-template-columns: 1fr; gap: 20px; }
  .tri-value { font-size: 26px; }
  .tri-item:last-child {
    border-left: none; padding-left: 0;
    border-top: 1px solid rgba(255,255,255,.15); padding-top: 20px;
  }
  .tri-footer { font-size: 13px; }

  .caveats-grid { grid-template-columns: 1fr; }
  .caveat { padding: 16px; }
  .caveat-title { font-size: 15px; }
  .caveat-summary { font-size: 14px; }
  .caveat-detail { font-size: 14px; }

  .cta-section { padding: 28px 20px 20px !important; }
  .cta-tips { grid-template-columns: 1fr; }
  .cta-tip { padding: 14px; }
  .formula-box { padding: 16px; }
  .formula-box .formula-label { font-size: 14px; }
  .formula-box .formula-value { font-size: 15px; }
  .inline-link-box {
    font-size: 14px; flex-direction: column; text-align: center;
    padding: 16px 16px 8px; gap: 4px;
  }
  .inline-link-box svg { display: none; }

  .calc-widget { margin-top: 20px; }
  .calc-input-wrap { flex-direction: column; }
  .calc-input { font-size: 16px; }
  .calc-btn { width: 100%; justify-content: center; }
  .calc-result-grid { grid-template-columns: 1fr; }
  .calc-result-value { font-size: 24px; }

  .contact-cta { padding: 28px 20px !important; }
  .contact-cta-inner { flex-direction: column; align-items: flex-start; gap: 20px; }
  .contact-cta-text h2 { font-size: 18px; }
  .contact-cta-text p { font-size: 15px; }
  .contact-cta-btn { width: 100%; justify-content: center; padding: 14px 24px; }

  .references li { flex-wrap: nowrap; gap: 6px; align-items: baseline; margin-bottom: 14px; }
  .references .ref-num { font-size: 12px; min-width: 28px; }
  .references a { font-size: 14px; word-break: break-word; display: inline; }
  .references a svg { display: none; }

  .footer-inner { flex-direction: column; align-items: flex-start; gap: 12px; }
  .footer-left .viseo-logo { height: 24px; }
}

@media print {
  body { background: #fff; }
  .site-header { padding: 32px 0; }
  .card { box-shadow: none; border: 1px solid var(--color-gray-200); }
  .site-footer { display: none; }
  .triangulation, .cta-section { color-adjust: exact; -webkit-print-color-adjust: exact; }
}