* {
  box-sizing: border-box;
}

body {
  background: #f8fafc;
  color: #1f2937;
  font-family: Inter, ui-sans-serif, system-ui, sans-serif;
  line-height: 1.5;
  margin: 0;
}

a {
  color: #1D4ED8;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 3px solid #3B82F6;
  outline-offset: 3px;
}

.skip-link {
  background: #ffffff;
  color: #1D4ED8;
  left: 1rem;
  padding: 0.6rem 0.8rem;
  position: absolute;
  top: -4rem;
  z-index: 2;
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  align-items: center;
  background: #ffffff;
  border-bottom: 2px solid #3B82F6;
  display: flex;
  justify-content: space-between;
  min-height: 4.2rem;
  padding: 0.9rem max(1rem, calc((100vw - 76rem) / 2));
}

.wordmark {
  color: #1f2937;
  font-size: 1.08rem;
  font-weight: 750;
  letter-spacing: 0.01em;
  text-decoration: none;
}

nav {
  align-items: center;
  display: flex;
  gap: 1rem;
}

.link-button {
  background: none;
  border: 0;
  color: #1D4ED8;
  cursor: pointer;
  font: inherit;
  padding: 0;
  text-decoration: underline;
}

main {
  margin: 0 auto;
  max-width: 76rem;
  padding: 2.5rem max(1rem, calc((100vw - 70rem) / 2)) 4rem;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  font-size: clamp(1.75rem, 4vw, 2.4rem);
  letter-spacing: -0.025em;
  line-height: 1.16;
  margin-bottom: 1.8rem;
}

h2 {
  font-size: 1.16rem;
  line-height: 1.35;
  margin-bottom: 0.3rem;
}

h3,
.section-label,
.rate-label,
.question-number {
  color: #526071;
  font-size: 0.76rem;
  font-weight: 750;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.section-label,
.rate-label,
.question-number {
  margin-bottom: 0.35rem;
}

.sign-in-panel,
.status-panel,
.run-summary,
.question-panel {
  background: #ffffff;
  border: 1px solid #dbeafe;
  border-radius: 0.65rem;
}

.sign-in-panel,
.status-panel {
  max-width: 36rem;
  padding: 1.5rem;
}

form {
  display: grid;
  gap: 0.6rem;
}

label {
  font-weight: 700;
  margin-top: 0.5rem;
}

input {
  border: 1px solid #697386;
  border-radius: 0.35rem;
  font: inherit;
  min-height: 2.65rem;
  padding: 0.55rem 0.65rem;
}

.button {
  background: #1D4ED8;
  border: 1px solid #1D4ED8;
  border-radius: 0.35rem;
  color: #ffffff;
  display: inline-block;
  font-weight: 700;
  margin-top: 0.7rem;
  padding: 0.65rem 0.95rem;
  text-align: center;
  text-decoration: none;
  width: fit-content;
}

.run-list,
.competitor-list,
.checked-list,
.observation-list {
  margin: 0;
  padding-left: 1.15rem;
}

.run-list {
  display: grid;
  gap: 0.8rem;
  list-style: none;
  padding-left: 0;
}

.run-list a {
  background: #ffffff;
  border: 1px solid #dbeafe;
  border-radius: 0.55rem;
  display: grid;
  gap: 0.25rem;
  padding: 1rem 1.1rem;
  text-decoration: none;
}

.run-list span {
  color: #526071;
}

.client-title {
  align-items: center;
  display: flex;
  gap: 0.7rem;
  justify-content: space-between;
}

.sample-marker {
  background: #dbeafe;
  border: 1px solid #3B82F6;
  border-radius: 99rem;
  color: #1f2937;
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 750;
  padding: 0.25rem 0.55rem;
  text-transform: uppercase;
}

.view-intro {
  color: #526071;
  max-width: 52rem;
}

.question-panel {
  margin-top: 1.25rem;
  overflow: hidden;
}

.question-heading {
  align-items: start;
  border-bottom: 1px solid #dbeafe;
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  padding: 1.25rem 1.3rem 1rem;
}

.question-state {
  background: #eff6ff;
  border-left: 3px solid #3B82F6;
  color: #1f2937;
  font-weight: 700;
  margin: 0;
  max-width: 18rem;
  padding: 0.45rem 0.65rem;
}

.displacement-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  padding: 1.1rem 1.3rem;
}

.displacement-grid section {
  background: #eff6ff;
  border: 1px solid #dbeafe;
  border-radius: 0.45rem;
  padding: 0.95rem;
}

.competitor-list,
.checked-list {
  display: grid;
  gap: 0.55rem;
}

.competitor-list li {
  display: grid;
  gap: 0.12rem;
}

.competitor-list span {
  color: #526071;
  font-size: 0.9rem;
}

.empty-statement {
  color: #665f57;
  font-weight: 650;
  margin-bottom: 0;
}

.engine-section {
  border-top: 1px solid #dbeafe;
  padding: 1.1rem 1.3rem 1.25rem;
}

.engine-section h3 {
  margin-bottom: 0.75rem;
}

table {
  border-collapse: collapse;
  table-layout: fixed;
  width: 100%;
}

th,
td {
  border-bottom: 1px solid #dbeafe;
  padding: 0.7rem 0.55rem;
  text-align: left;
  vertical-align: top;
  word-wrap: break-word;
}

thead th {
  color: #526071;
  font-size: 0.78rem;
}

tbody th {
  font-size: 0.92rem;
}

.observation-list {
  display: grid;
  gap: 0.35rem;
  font-size: 0.9rem;
}

.run-summary {
  margin-top: 1.5rem;
  padding: 1.25rem 1.3rem;
}

.run-config {
  border-bottom: 1px solid #dbeafe;
  margin-bottom: 1rem;
}

.run-config p {
  margin-bottom: 0.6rem;
}

.coverage-section {
  border-bottom: 1px solid #dbeafe;
  margin-bottom: 1rem;
  padding-bottom: 1rem;
}

.coverage-list {
  display: grid;
  gap: 0.6rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  list-style: none;
  margin: 0;
  padding: 0;
}

.coverage-list li {
  background: #eff6ff;
  border-left: 3px solid #3B82F6;
  display: grid;
  gap: 0.15rem;
  padding: 0.65rem 0.75rem;
}

.coverage-list span {
  color: #526071;
  font-size: 0.88rem;
}

.rate-grid {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.rate-unit {
  background: #eff6ff;
  border-left: 3px solid #3B82F6;
  padding: 0.9rem;
}

.rate-value {
  font-size: 1.55rem;
  font-weight: 750;
  margin-bottom: 0.15rem;
}

.rate-interval,
.rate-base {
  color: #526071;
  font-size: 0.9rem;
  margin-bottom: 0.15rem;
}

.loading {
  color: #526071;
}

@media (max-width: 650px) {
  main {
    padding-top: 1.75rem;
  }

  .site-header,
  .question-heading,
  .client-title {
    align-items: start;
    flex-direction: column;
  }

  .displacement-grid,
  .rate-grid,
  .coverage-list {
    grid-template-columns: 1fr;
  }

  .question-state {
    max-width: none;
  }

  table,
  thead,
  tbody,
  tr,
  th,
  td {
    display: block;
  }

  thead {
    position: absolute;
    height: 1px;
    overflow: hidden;
    width: 1px;
  }

  tr {
    border-top: 1px solid #dbeafe;
    padding: 0.65rem 0;
  }

  th,
  td {
    border: 0;
    padding: 0.22rem 0;
  }

  td::before {
    color: #526071;
    content: attr(data-label);
    display: block;
    font-size: 0.72rem;
    font-weight: 750;
    letter-spacing: 0.06em;
    text-transform: uppercase;
  }
}

@media print {
  body {
    background: #ffffff;
    font-size: 10pt;
  }

  .site-header,
  .skip-link,
  .link-button,
  nav {
    display: none;
  }

  main {
    max-width: none;
    padding: 0;
  }

  .question-panel,
  .run-summary {
    break-inside: avoid;
  }

  .question-panel {
    margin-top: 0.7rem;
  }
}