/* Same Bidoli palette and local typefaces; the three connected stations carry the sequence. */
.contribution { padding-block: 56px 80px; }
.contribution-heading { max-width: 780px; }
.v4-page .contribution-heading h1 { font-size: clamp(36px, 5vw, 60px); line-height: 1.1; letter-spacing: -.03em; margin-block: 20px 24px; }
.contribution-heading h1 span { color: var(--blue); }
.v4-page .contribution .v4-lede { font-size: 20px; }
.contribution-intro { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 56px; margin-block: 40px 24px; }
.contribution-process { list-style: none; counter-reset: station; margin: 0 0 28px; padding: 0; }
.contribution-process li { position: relative; counter-increment: station; padding: 0 0 26px 58px; margin-left: 17px; border-left: 1px solid var(--line); }
.contribution-process li:last-child { border-left-color: transparent; padding-bottom: 0; }
.contribution-process li::before { content: counter(station); position: absolute; left: -18px; top: 0; width: 36px; height: 36px; display: grid; place-items: center; background: var(--canvas); border: 1px solid var(--blue); border-radius: 50%; color: var(--blue); font: 500 14px var(--v4-font-mono); }
.contribution-process strong, .contribution-process span { display: block; }
.contribution-process strong { font-size: 18px; color: var(--navy); }
.contribution-process span { margin-top: 5px; color: var(--muted); font-size: 15px; }
.contribution-promise { align-self: start; padding: 30px; border-top: 3px solid var(--blue); background: white; }
.v4-page .contribution-promise h2 { font-size: 28px; line-height: 1.3; margin-block: 20px; }
.contribution-start { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 18px; }
.contribution-start button { font-size: 15px; }
.contribution-privacy { padding-block: 18px; border-block: 1px solid var(--line); font-size: 14px; color: var(--muted); }
#contribution-app { scroll-margin-top: 20px; }
.contribution-stages { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin-block: 28px; }
.contribution-stages button { background: transparent; border: 1px solid var(--line); color: var(--ink); min-height: 64px; padding: 14px; font-size: 14px; text-align: left; border-radius: 6px; }
.contribution-stages button span { color: var(--blue); font-family: var(--v4-font-mono); margin-right: 10px; }
.contribution-stages button small { display: block; font-size: 12px; margin-top: 5px; color: var(--muted); }
.contribution-stages [aria-current=step] { border-color: var(--blue); box-shadow: inset 0 -2px 0 var(--blue); background: white; }
.contribution-work { max-width: 760px; margin: 0 auto; padding-block: 16px 32px; }
.v4-page .contribution-work h2 { font-size: clamp(26px, 3.5vw, 36px); margin-block: 12px 20px; }
.contribution-field { margin-block: 32px; }
.contribution-field label { display: block; font-size: 18px; font-weight: 500; line-height: 1.45; color: var(--navy); }
.contribution-field p { margin-block: 8px 12px; }
.contribution-field textarea { width: 100%; min-height: 112px; resize: vertical; font-family: inherit; font-size: 16px; line-height: 1.6; }
.contribution-tools { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; margin-top: 24px; }
.contribution .link-button { min-height: 44px; text-align: left; white-space: normal; }
.contribution-summary section { border-top: 1px solid var(--line); padding-top: 24px; margin-top: 28px; }
.contribution-summary dt { font-weight: 500; margin-top: 22px; }
.contribution-summary dd { margin: 8px 0 0; white-space: pre-wrap; overflow-wrap: anywhere; }
.contribution-return { background: white; border-left: 3px solid var(--blue); padding: 24px; margin-block: 32px; }
.contribution-library, .contribution-section { border-top: 1px solid var(--line); margin-top: 56px; padding-top: 40px; }
.v4-page .contribution-library h2, .v4-page .contribution-section h2 { font-size: clamp(26px, 3vw, 32px); margin-bottom: 20px; }
.contribution-examples { margin-block: 28px; }
.contribution-examples details { border-bottom: 1px solid var(--line); }
.contribution summary { padding-block: 18px; cursor: pointer; color: var(--navy); }
.contribution-examples summary strong, .contribution-examples summary small { display: block; }
.contribution-examples summary span { display: inline-block; vertical-align: middle; max-width: calc(100% - 32px); }
.contribution-examples summary strong { font-size: 18px; font-weight: 500; }
.contribution-examples summary small { font-size: 14px; color: var(--muted); margin-top: 6px; }
.contribution-examples details > p, .contribution-questions { max-width: 760px; }
.contribution-questions { border-left: 2px solid var(--blue); padding-left: 32px; margin-block: 24px; }
.contribution-questions li { margin-block: 12px; }
.contribution-opportunities { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px; margin-block: 28px; }
.contribution-opportunities a { display: inline-block; padding-block: 10px; }
.contribution a, .contribution button { overflow-wrap: anywhere; }
.contribution .step-actions { flex-wrap: wrap; gap: 16px; }
.contribution .step-actions > a { padding-block: 12px; }
@media (max-width: 900px) { .contribution-intro { gap: 28px; } }
@media (max-width: 680px) {
  .contribution { padding-block: 36px 56px; }
  .contribution-intro, .contribution-opportunities { grid-template-columns: 1fr; gap: 24px; }
  .contribution-start, .contribution-tools { flex-direction: column; align-items: stretch; }
  .contribution-stages { grid-template-columns: 1fr; gap: 6px; }
  .contribution-stages button { min-height: 48px; padding: 12px; }
  .contribution-stages button small { display: inline; margin-left: 10px; }
  .contribution-promise { padding: 24px; }
  .contribution .step-actions { flex-direction: column; align-items: stretch; }
  .contribution-library, .contribution-section { margin-top: 40px; padding-top: 28px; }
}