.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.publication-hero {
  padding-block: clamp(3.5rem, 7vw, 7rem) clamp(2.5rem, 5vw, 5rem);
}

.publication-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1.2rem;
  margin: 1.75rem 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
  color: var(--ink-soft);
  font-size: 0.8rem;
}

.publication-hero__meta span + span {
  padding-left: 1.2rem;
  border-left: 1px solid var(--rule);
}

.publication-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(28rem, 1.22fr);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.publication-layout > * {
  min-width: 0;
  padding: clamp(2rem, 4vw, 4.5rem);
}

.publication-layout > * + * {
  border-left: 1px solid var(--rule);
}

.publication-layout--survey {
  grid-template-columns: minmax(22rem, 0.76fr) minmax(34rem, 1.24fr);
}

.publication-layout--survey .survey-intro {
  background: color-mix(in oklch, var(--paper-deep) 54%, var(--paper));
}

.survey-intro .page-title {
  max-width: 8ch;
}

.survey-intro .standfirst {
  max-width: 33ch;
}

.survey-privacy-note {
  max-width: 38rem;
  margin-top: clamp(2rem, 4vw, 3.5rem);
  padding-block: 1.2rem;
  border-top: 1px solid var(--green-deep);
  border-bottom: 1px solid var(--green-deep);
}

.survey-privacy-note h2 {
  margin: 0 0 0.5rem;
  color: var(--green-deep);
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 400;
}

.survey-privacy-note p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.88rem;
}

.survey-privacy-note p + p {
  margin-top: 0.65rem;
}

.survey-points {
  margin: 2.5rem 0 0;
  padding: 0;
  list-style: none;
}

.survey-point {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 1rem;
  padding-block: 1.25rem;
  border-top: 1px solid var(--rule);
}

.survey-point__number {
  width: 2.55rem;
  height: 2.55rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--green-deep);
  color: var(--paper);
  font-family: var(--font-display);
  font-size: 1.35rem;
}

.survey-point h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 400;
}

.survey-point p {
  margin: 0.25rem 0 0;
  color: var(--ink-soft);
  font-size: 0.88rem;
}

.survey-form__heading {
  margin-bottom: 1.2rem;
}

.survey-form__heading h2 {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 0;
  padding-bottom: 0.65rem;
  border-bottom: 1px solid var(--rule);
  color: var(--green-deep);
  font-family: var(--font-display);
  font-size: 1.55rem;
  font-weight: 400;
}

.survey-form__heading h2 small {
  font-family: var(--font-sans);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.survey-form__heading > p {
  max-width: 58ch;
  margin: 0.8rem 0 0;
  color: var(--ink-soft);
  font-size: 0.88rem;
}

.survey-form .form-grid {
  display: block;
}

.survey-form .field {
  display: grid;
  grid-template-columns: minmax(11rem, 0.42fr) minmax(0, 1fr);
  gap: 1.25rem;
  padding-block: 1.15rem;
  border-bottom: 1px solid var(--rule);
}

.survey-form .field label {
  margin: 0;
  padding-top: 0.8rem;
}

.survey-form .field-control {
  min-width: 0;
}

.survey-form .field input,
.survey-form .field select,
.survey-form .field textarea {
  margin: 0;
  background: color-mix(in oklch, var(--paper) 88%, white);
  border-color: color-mix(in oklch, var(--rule) 76%, var(--ink-soft));
  transition: border-color 160ms ease, background-color 160ms ease;
}

.survey-form .field input::placeholder,
.survey-form .field textarea::placeholder {
  color: color-mix(in oklch, var(--ink-soft) 86%, var(--paper));
  opacity: 1;
}

.survey-form .field input:hover,
.survey-form .field select:hover,
.survey-form .field textarea:hover {
  border-color: var(--ink-soft);
}

.survey-form .field input:focus,
.survey-form .field select:focus,
.survey-form .field textarea:focus {
  background: var(--paper);
  border-color: var(--green-deep);
}

.survey-form .field-help,
.survey-form .field-error {
  margin: 0.45rem 0 0;
  line-height: 1.45;
}

.survey-form .field-error {
  color: var(--error);
  font-size: 0.8rem;
  font-weight: 600;
}

.survey-form .field-error::before {
  content: "Check: ";
}

.survey-form .field.is-invalid input,
.survey-form .field.is-invalid select,
.survey-form .field.is-invalid textarea {
  border-color: var(--error);
  background: color-mix(in oklch, var(--error) 5%, var(--paper));
}

.required-mark {
  color: var(--error);
  font-family: var(--font-sans);
}

.optional-mark {
  display: block;
  margin-top: 0.3rem;
  color: var(--ink-soft);
  font-family: var(--font-sans);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.field-control--money {
  position: relative;
}

.field-control--money .money-prefix {
  position: absolute;
  top: 0.88rem;
  left: 1rem;
  z-index: 1;
  color: var(--green-deep);
  font-family: var(--font-display);
  font-size: 1.15rem;
  pointer-events: none;
}

.survey-form .field-control--money input {
  padding-left: 2.15rem;
}

.survey-honeypot {
  position: absolute !important;
  left: -10000px !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
}

.form-status {
  margin-top: 1rem;
  padding: 0.85rem 1rem;
  border: 1px solid var(--clay);
  background: var(--paper-deep);
  color: var(--ink);
  font-size: 0.88rem;
}

.form-status[data-status="pending"] {
  border-color: var(--green);
  background: var(--sage);
}

.survey-form .form-actions {
  display: grid;
  grid-template-columns: minmax(11rem, 0.42fr) minmax(0, 1fr);
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.survey-form .form-actions__inner {
  grid-column: 2;
}

.survey-submit {
  min-width: 13.5rem;
}

.survey-submit:disabled {
  cursor: wait;
  opacity: 0.72;
}

.survey-submit:disabled:hover {
  background: var(--green-deep);
  color: var(--paper);
}

.form-fine-print {
  max-width: 66ch;
  margin: 1rem 0 0;
  color: var(--ink-soft);
  font-size: 0.78rem;
}

.survey-success {
  display: grid;
  grid-template-columns: 4.5rem minmax(0, 1fr);
  gap: 1.4rem;
  margin-top: 1.5rem;
  padding-block: clamp(1.5rem, 3vw, 2.5rem);
  border-top: 1px solid var(--green-deep);
  border-bottom: 1px solid var(--green-deep);
}

.survey-success[hidden] {
  display: none;
}

.survey-success__mark {
  width: 4.25rem;
  height: 4.25rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--green-deep);
  color: var(--paper);
  font-family: var(--font-display);
  font-size: 2rem;
}

.survey-success h2 {
  margin: 0;
  color: var(--green-deep);
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.4rem);
  font-weight: 400;
  line-height: 1;
}

.survey-success p {
  max-width: 55ch;
  margin: 1rem 0 0;
  color: var(--ink-soft);
}

.survey-success__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.about-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(20rem, 0.75fr);
  gap: clamp(2rem, 7vw, 7rem);
  align-items: end;
}

.about-hero .page-title {
  max-width: 12ch;
}

.about-portrait {
  margin: 0;
}

.about-portrait img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  object-position: center 28%;
  filter: saturate(0.78) contrast(1.02);
}

.about-portrait figcaption {
  margin-top: 0.55rem;
  color: var(--ink-soft);
  font-size: 0.78rem;
}

.founder-grid {
  display: grid;
  grid-template-columns: minmax(15rem, 0.7fr) minmax(0, 1.3fr);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.founder-note,
.principles {
  padding: clamp(1.5rem, 3vw, 3rem);
}

.founder-note {
  background: var(--paper-deep);
}

.founder-note p:first-of-type {
  margin-top: 0;
}

.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  padding-block: 0;
}

.principle {
  padding: 2.2rem 1.6rem;
  border-left: 1px solid var(--rule);
}

.principle__mark {
  width: 3rem;
  height: 3rem;
  display: grid;
  place-items: center;
  margin-bottom: 1.3rem;
  border-radius: 50%;
  background: var(--green-deep);
  color: var(--paper);
  font-family: var(--font-display);
  font-size: 1.3rem;
}

.principle h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 400;
}

.principle p {
  margin-bottom: 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.source-process {
  display: grid;
  grid-template-columns: minmax(15rem, 0.65fr) minmax(0, 1.35fr);
  gap: clamp(2rem, 5vw, 5rem);
}

.source-steps {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--rule);
}

.source-step {
  padding: 1.5rem;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.source-step:nth-child(2n) {
  border-right: 0;
}

.source-step strong {
  display: block;
  color: var(--green-deep);
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 400;
}

.source-step p {
  margin-bottom: 0;
  color: var(--ink-soft);
  font-size: 0.88rem;
}

.simple-page {
  display: grid;
  grid-template-columns: minmax(14rem, 0.45fr) minmax(0, 1fr);
  gap: clamp(2rem, 8vw, 8rem);
}

.simple-page__intro {
  align-self: start;
  position: sticky;
  top: 1.5rem;
}

.simple-page__body {
  max-width: 72ch;
  padding-top: 0.4rem;
}

.simple-page__body h2 {
  margin: 3rem 0 0.75rem;
  color: var(--green-deep);
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 400;
  line-height: 1.05;
}

.simple-page__body h2:first-child {
  margin-top: 0;
}

.contact-card {
  margin-block: 2rem;
  padding-block: 1.4rem;
  border-top: 1px solid var(--green-deep);
  border-bottom: 1px solid var(--green-deep);
}

.contact-card a {
  color: var(--green-deep);
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.4rem);
}

.article-header {
  max-width: 78rem;
}

.article-header .article-title {
  max-width: 15ch;
}

.article-header .standfirst {
  max-width: 55ch;
}

.article-body blockquote {
  margin: 2.5rem 0;
  padding: 0.3rem 0 0.3rem 1.4rem;
  border-left: 3px solid var(--clay);
  color: var(--green-deep);
  font-family: var(--font-display);
  font-size: 1.5rem;
  line-height: 1.3;
}

.formula {
  margin-block: 2rem;
  padding: 1.4rem;
  border-top: 1px solid var(--green-deep);
  border-bottom: 1px solid var(--green-deep);
  font-family: var(--font-mono);
  font-size: clamp(0.92rem, 2vw, 1.15rem);
  line-height: 1.7;
}

.checklist {
  margin-block: 2rem;
  padding: 0;
  border-top: 1px solid var(--rule);
  list-style: none;
}

.checklist li {
  display: grid;
  grid-template-columns: 2rem 1fr;
  gap: 0.8rem;
  padding-block: 0.95rem;
  border-bottom: 1px solid var(--rule);
}

.checklist li::before {
  content: counter(list-item, decimal-leading-zero);
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.compare-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  margin-block: 2.5rem;
  border-top: 1px solid var(--green-deep);
  border-bottom: 1px solid var(--green-deep);
}

.compare-grid > div {
  padding: 1.5rem;
}

.compare-grid > div + div {
  border-left: 1px solid var(--rule);
}

.compare-grid h3 {
  margin-top: 0;
}

.faq-section {
  padding-block: var(--section-space);
  border-top: 1px solid var(--rule);
}

.faq-list {
  max-width: 70rem;
  margin: 2rem 0 0;
  border-top: 1px solid var(--rule);
}

.faq-list details {
  border-bottom: 1px solid var(--rule);
}

.faq-list summary {
  cursor: pointer;
  padding: 1.15rem 2.5rem 1.15rem 0;
  color: var(--green-deep);
  font-family: var(--font-display);
  font-size: 1.3rem;
}

.faq-list details p {
  max-width: 68ch;
  margin: 0 0 1.25rem;
}

.related-list {
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}

.related-list li {
  padding-block: 0.75rem;
  border-bottom: 1px solid var(--rule);
}

.guide-index {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.guide-index article {
  grid-column: span 4;
  min-width: 0;
  padding: clamp(1.4rem, 2.5vw, 2.4rem);
  border-right: 1px solid var(--rule);
}

.guide-index article:last-child {
  border-right: 0;
}

.guide-index h2 {
  margin: 0.7rem 0;
  color: var(--green-deep);
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.7rem);
  font-weight: 400;
  line-height: 1.02;
}

.guide-index h2 a {
  text-decoration: none;
}

.guide-index p {
  color: var(--ink-soft);
}

@media (max-width: 64rem) {
  .publication-layout,
  .about-hero,
  .founder-grid,
  .source-process,
  .simple-page {
    grid-template-columns: 1fr;
  }

  .publication-layout > * + * {
    border-top: 1px solid var(--rule);
    border-left: 0;
  }

  .survey-intro .page-title {
    max-width: 11ch;
  }

  .simple-page__intro {
    position: static;
  }

  .guide-index article {
    grid-column: span 6;
  }

  .guide-index article:last-child {
    grid-column: 1 / -1;
    border-top: 1px solid var(--rule);
  }
}

@media (max-width: 48rem) {
  .publication-layout > * {
    padding: 2rem 0;
  }

  .publication-layout {
    width: min(calc(100% - (2 * var(--gutter))), var(--max-width));
    margin-inline: auto;
  }

  .survey-form .field,
  .survey-form .form-actions {
    grid-template-columns: 1fr;
    gap: 0.45rem;
  }

  .survey-form .field {
    padding-block: 1rem 1.25rem;
  }

  .survey-form .field label {
    padding-top: 0;
  }

  .survey-form .form-actions__inner {
    grid-column: 1;
  }

  .survey-submit {
    width: 100%;
  }

  .survey-success {
    grid-template-columns: 1fr;
  }

  .survey-success__mark {
    width: 3.5rem;
    height: 3.5rem;
  }

  .survey-success__actions {
    display: grid;
  }

  .survey-success__actions .button {
    width: 100%;
  }

  .principles,
  .source-steps,
  .compare-grid {
    grid-template-columns: 1fr;
  }

  .principle {
    border-top: 1px solid var(--rule);
    border-left: 0;
  }

  .source-step,
  .source-step:nth-child(2n) {
    border-right: 0;
  }

  .compare-grid > div + div {
    border-top: 1px solid var(--rule);
    border-left: 0;
  }

  .publication-hero__meta {
    display: block;
  }

  .publication-hero__meta span {
    display: block;
  }

  .publication-hero__meta span + span {
    margin-top: 0.35rem;
    padding-left: 0;
    border-left: 0;
  }

  .article-body {
    font-size: 1rem;
  }

  .guide-index {
    grid-template-columns: 1fr;
  }

  .guide-index article,
  .guide-index article:last-child {
    grid-column: 1;
    border-top: 1px solid var(--rule);
    border-right: 0;
  }

  .guide-index article:first-child {
    border-top: 0;
  }
}