:root {
  --bg: #f8f9fa;
  --bg-alt: #ffffff;
  --ink: #1e293b;
  --ink-soft: #52606d;
  --line: #dde3e8;
  --accent: #2563eb;
  --accent-soft: #e8effd;
  --ok: #3f7d5c;
  --ok-soft: #e7f2ec;
  --warn: #b5482f;
  --warn-soft: #faeae6;
  --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2 {
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0;
}

h2 {
  font-size: 1.3rem;
  margin-bottom: 16px;
}

p { margin: 0; }

ul { margin: 0; }

/* Top bar */

.topbar {
  border-bottom: 1px solid var(--line);
  background: var(--bg-alt);
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.brand {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.01em;
}

/* Buttons */

.btn {
  display: inline-block;
  text-decoration: none;
  border-radius: 4px;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 8px 16px;
  border: 1px solid transparent;
}

.btn-ghost {
  color: var(--accent);
  border-color: var(--accent);
}

.btn-ghost:hover {
  background: var(--accent-soft);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  font-size: 1rem;
  padding: 12px 24px;
}

.btn-primary:hover {
  background: #1d4ed8;
}

.btn-large {
  font-size: 1.05rem;
  padding: 14px 28px;
}

/* Hero */

.hero {
  padding: 40px 0 32px;
}

.eyebrow {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 12px;
}

.hero h1 {
  font-size: 2rem;
  line-height: 1.25;
  max-width: 720px;
}

.hero .lead {
  margin-top: 14px;
  font-size: 1.05rem;
  color: var(--ink-soft);
  max-width: 620px;
}

/* Example card */

.card {
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: 6px;
  padding: 22px 24px;
}

.example-card {
  margin-top: 28px;
}

.card-label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  margin-bottom: 8px;
}

.card-text {
  font-size: 0.98rem;
  color: var(--ink);
  max-width: 680px;
}

/* Discrepancy highlight */

.discrepancy {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
  margin-top: 18px;
  padding: 14px 16px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.disc-item {
  font-weight: 600;
  font-size: 0.92rem;
  margin-right: 4px;
}

.disc-row {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
}

.disc-label {
  color: var(--ink-soft);
}

.disc-value {
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 4px;
}

.disc-high {
  color: var(--warn);
  background: var(--warn-soft);
}

.disc-low {
  color: var(--ink-soft);
  background: var(--line);
}

.stat-row {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.stat {
  display: flex;
  flex-direction: column;
}

.stat-num {
  font-size: 1.3rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--accent);
}

.stat-label {
  font-size: 0.78rem;
  color: var(--ink-soft);
  margin-top: 2px;
}

.hero .btn-primary {
  margin-top: 24px;
}

/* Sections below the fold */

.audience, .sovereignty, .method, .checks, .offer {
  padding: 36px 0;
  border-top: 1px solid var(--line);
}

.audience p {
  color: var(--ink-soft);
  max-width: 620px;
}

/* Data sovereignty */

.sov-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.sov-item {
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 18px 20px;
}

.sov-title {
  font-weight: 600;
  margin-bottom: 6px;
}

.sov-item p:last-child {
  color: var(--ink-soft);
  font-size: 0.92rem;
}

/* Method / tabs */

.tabs {
  display: flex;
  flex-direction: column;
}

.tab-input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.tab-labels {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}

.tab-labels label {
  cursor: pointer;
  padding: 10px 16px;
  font-size: 0.9rem;
  color: var(--ink-soft);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}

.tab-panels {
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-top: none;
  border-radius: 0 0 6px 6px;
  padding: 20px;
}

.tab-panel {
  display: none;
}

#tab-source:checked ~ .tab-labels label[for="tab-source"],
#tab-normalize:checked ~ .tab-labels label[for="tab-normalize"],
#tab-result:checked ~ .tab-labels label[for="tab-result"] {
  color: var(--accent);
  border-bottom-color: var(--accent);
  font-weight: 600;
}

#tab-source:checked ~ .tab-panels .panel-source,
#tab-normalize:checked ~ .tab-panels .panel-normalize,
#tab-result:checked ~ .tab-panels .panel-result {
  display: block;
}

.panel-note {
  color: var(--ink-soft);
  font-size: 0.92rem;
  margin-bottom: 14px;
}

.raw-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.raw-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 12px;
  background: var(--bg);
  border-radius: 4px;
  font-size: 0.9rem;
}

.raw-name {
  color: var(--ink);
}

.raw-price {
  color: var(--ink-soft);
  white-space: nowrap;
}

.raw-missing {
  color: var(--warn);
  font-weight: 600;
}

.mono-block {
  font-family: var(--mono);
  font-size: 0.85rem;
  line-height: 1.6;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 16px;
  overflow-x: auto;
  white-space: pre;
  margin: 0;
}

.result-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.result-table th, .result-table td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--line);
}

.result-table th {
  color: var(--ink-soft);
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.status {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.82rem;
}

.status-ok {
  color: var(--ok);
  background: var(--ok-soft);
}

.status-warn {
  color: var(--warn);
  background: var(--warn-soft);
}

/* What we check — cards */

.check-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.check-card {
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 16px 18px;
}

.check-title {
  font-weight: 600;
  margin-bottom: 6px;
}

.check-card p:last-child {
  color: var(--ink-soft);
  font-size: 0.92rem;
}

/* Formats of cooperation */

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

.plan-card {
  position: relative;
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 20px 22px;
}

.plan-recommended {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

.plan-badge {
  display: inline-block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 3px 8px;
  border-radius: 4px;
  margin-bottom: 10px;
}

.plan-title {
  font-weight: 600;
  font-size: 1.05rem;
  margin-bottom: 10px;
}

.plan-list {
  list-style: none;
  padding: 0;
  color: var(--ink-soft);
  font-size: 0.92rem;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.plan-list li {
  padding-left: 16px;
  position: relative;
}

.plan-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--line);
}

/* Final CTA */

.final-cta {
  padding: 44px 0;
  border-top: 1px solid var(--line);
  text-align: center;
}

.final-cta h2 {
  margin-bottom: 18px;
}

.data-line {
  margin-top: 18px;
  color: var(--ink-soft);
  font-size: 0.88rem;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

.lock {
  margin-right: 6px;
}

/* Footer */

.footer {
  border-top: 1px solid var(--line);
  padding: 20px 0 32px;
}

.footer-brand {
  font-size: 0.8rem;
  color: #8a9096;
}

@media (max-width: 640px) {
  .hero h1 { font-size: 1.6rem; }
  .sov-grid { grid-template-columns: 1fr; }
  .check-grid { grid-template-columns: 1fr; }
  .plan-grid { grid-template-columns: 1fr; }
  .tab-labels { gap: 0; }
  .result-table { display: block; overflow-x: auto; }
}