:root {
  --background: #ffffff;
  --text: #1d1d1f;
  --secondary: #6e6e73;
  --accent: #4f6d8c;
  --divider: #d2d2d7;
  --surface: #f5f5f7;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
}

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

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1040px;
  margin: 0 auto;
  padding: 24px;
  border-bottom: 1px solid var(--divider);
}

.brand {
  align-items: center;
  display: inline-flex;
  gap: 10px;
  font-weight: 650;
}

.brand-mark {
  display: block;
  height: 30px;
  width: 30px;
}

nav {
  display: flex;
  gap: 20px;
  color: var(--secondary);
  font-size: 14px;
}

nav a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

main {
  max-width: 1040px;
  margin: 0 auto;
  padding: 64px 24px;
}

.narrow {
  max-width: 680px;
}

.hero {
  padding: 60px 0 80px;
}

.eyebrow {
  color: var(--accent);
  font-size: 14px;
  font-weight: 650;
  letter-spacing: 0.02em;
  margin: 0 0 12px;
}

h1 {
  font-size: clamp(36px, 7vw, 72px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  margin: 0;
  max-width: 900px;
}

.page-title h1,
.sample-card h1 {
  font-size: clamp(44px, 8vw, 88px);
}

.lede {
  max-width: 680px;
  color: var(--secondary);
  font-size: 21px;
  margin-top: 20px;
}

.hero-actions {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 28px;
}

.text-link {
  color: var(--accent);
  font-weight: 650;
}

.section {
  border-top: 1px solid var(--divider);
  padding: 32px 0;
}

.section-heading {
  margin-bottom: 16px;
}

h2 {
  font-size: 24px;
  margin: 0 0 16px;
}

h3 {
  font-size: 21px;
  margin: 0 0 8px;
}

p {
  color: var(--secondary);
}

.project-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  padding: 28px 0;
  border-top: 1px solid var(--divider);
}

.project-row p {
  max-width: 680px;
  margin-bottom: 0;
}

.project-meta {
  display: grid;
  gap: 8px;
  justify-items: end;
  color: var(--secondary);
  font-size: 14px;
}

.project-meta span:first-child {
  color: var(--accent);
  font-weight: 700;
}

.metadata-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--divider);
  margin: 48px 0;
}

.metadata-grid div {
  background: var(--background);
  min-width: 0;
  padding: 20px 24px;
}

.metadata-grid div:first-child {
  padding-left: 0;
}

.metadata-grid div:last-child {
  padding-right: 0;
}

.metadata-grid span,
dt {
  display: block;
  color: var(--secondary);
  font-size: 13px;
}

.metadata-grid strong,
dd {
  display: block;
  margin: 4px 0 0;
  font-size: 17px;
}

.revision {
  background: var(--surface);
  border-radius: 10px;
  padding: 24px;
}

.button,
button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 999px;
  background: var(--accent);
  color: white;
  font: inherit;
  font-weight: 650;
  min-height: 44px;
  padding: 12px 18px;
}

button:disabled {
  cursor: default;
  opacity: 0.7;
}

.secondary-button {
  background: var(--surface);
  color: var(--accent);
}

.sample-card {
  border-bottom: 1px solid var(--divider);
  padding-bottom: 32px;
  margin-bottom: 32px;
}

.sample-card dl {
  display: grid;
  gap: 14px;
  margin: 28px 0;
}

.note {
  max-width: 520px;
}

.evaluation-form {
  display: grid;
  gap: 20px;
}

label {
  display: grid;
  gap: 8px;
  color: var(--text);
  font-weight: 600;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--divider);
  border-radius: 8px;
  font: inherit;
  font-size: 16px;
  padding: 12px;
}

select,
input:not([type="range"]) {
  min-height: 48px;
}

input[type="range"] {
  accent-color: var(--accent);
  padding: 12px 0;
}

.range-row {
  display: grid;
  grid-template-columns: 1fr 44px;
  align-items: center;
  gap: 12px;
}

output {
  min-width: 44px;
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  font-weight: 700;
  padding: 6px 0;
  text-align: center;
}

textarea {
  resize: vertical;
}

.form-helper {
  color: var(--secondary);
  font-size: 14px;
  margin: -8px 0 0;
}

footer {
  max-width: 1040px;
  margin: 0 auto;
  padding: 32px 24px 56px;
  color: var(--secondary);
  font-size: 14px;
}

@media (max-width: 720px) {
  .site-header {
    align-items: flex-start;
    display: block;
    padding: 18px;
  }

  .brand {
    display: block;
    font-size: 17px;
  }

  .project-row {
    display: block;
    padding: 24px 0;
  }

  nav {
    gap: 18px;
    margin-top: 8px;
  }

  main {
    padding: 28px 18px 48px;
  }

  .hero {
    padding: 36px 0 52px;
  }

  h1 {
    font-size: clamp(34px, 11vw, 48px);
    letter-spacing: -0.015em;
  }

  .page-title h1,
  .sample-card h1 {
    font-size: clamp(42px, 15vw, 64px);
  }

  .lede {
    font-size: 18px;
  }

  .hero-actions {
    align-items: stretch;
    display: grid;
    gap: 12px;
    margin-top: 24px;
  }

  .text-link {
    display: inline-flex;
    min-height: 44px;
    align-items: center;
  }

  .section {
    padding: 28px 0;
  }

  .metadata-grid {
    grid-template-columns: 1fr;
    margin: 32px 0;
  }

  .metadata-grid div {
    padding: 16px 0;
  }

  .project-meta {
    justify-items: start;
    margin-top: 18px;
  }

  .sample-card {
    margin-bottom: 24px;
    padding-bottom: 24px;
  }

  .evaluation-form {
    gap: 18px;
  }

  footer {
    padding: 24px 18px 44px;
  }
}

@media (max-width: 380px) {
  .site-header {
    padding: 16px;
  }

  main {
    padding-left: 16px;
    padding-right: 16px;
  }

  h1 {
    font-size: 32px;
  }

  .sample-card h1 {
    font-size: 40px;
  }
}