.stamp-page .network-hero h1 { max-width: 17ch; }
.stamp-guide { --stamp-ink: #1c4247; --stamp-muted: #4c6767; --stamp-rule: #cbd5ce; --stamp-paper: #fbfaf5; color: var(--stamp-ink); display: grid; gap: clamp(3rem, 6vw, 5.25rem); min-width: 0; }
.stamp-guide * { min-width: 0; }
.stamp-guide :is(p, li) { line-height: 1.78; }
.stamp-guide a { color: inherit; text-underline-offset: .22em; }
.stamp-guide :is(a, button, summary):focus-visible { outline: 3px solid #155f69; outline-offset: 4px; }
.stamp-guide [id] { scroll-margin-top: 6rem; }
.stamp-hero { margin: 0; padding: clamp(1rem, 3vw, 2.5rem); background: #eaf0e9; border: 1px solid #d7dfd8; border-radius: 1.1rem; }
.stamp-hero picture, .stamp-hero img { display: block; width: 100%; }
.stamp-hero img { height: auto; max-height: 460px; object-fit: contain; }
.stamp-hero figcaption { margin-top: .65rem; color: var(--stamp-muted); font-size: .79rem; line-height: 1.5; }
.stamp-section { border-top: 1px solid var(--stamp-rule); padding-top: clamp(1.3rem, 3vw, 2rem); }
.stamp-section__head { display: grid; grid-template-columns: 3rem minmax(0, 1fr); gap: clamp(.75rem, 2vw, 1.4rem); align-items: start; margin-bottom: clamp(1.4rem, 3vw, 2.2rem); }
.stamp-section__head > span { color: #9c4e37; font: 700 .85rem/1.5 'DM Sans', sans-serif; padding-top: .45rem; }
.stamp-section h2 { margin: 0; font-size: clamp(1.65rem, 3.2vw, 2.75rem); line-height: 1.18; letter-spacing: -.024em; text-wrap: balance; }
.stamp-section h3 { margin: 0 0 .55rem; font-size: clamp(1.08rem, 1.7vw, 1.25rem); line-height: 1.4; }
.stamp-section p { margin: 0 0 1.1rem; }
.stamp-prose { max-width: 73ch; margin-inline: auto; }
.stamp-prose p + p { margin-top: 1.3rem; }
.stamp-source-note { max-width: 73ch; margin: 1.5rem auto 0 !important; color: var(--stamp-muted); font-size: .84rem; line-height: 1.65 !important; }
.stamp-section__intro { max-width: 73ch; margin-inline: auto !important; }
.stamp-section--quick { border: 0; padding: clamp(1.35rem, 3vw, 2.25rem); background: #e5eee7; border-radius: .9rem; }
.stamp-section--quick .stamp-section__head { margin-bottom: 1rem; }
.stamp-quick { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 clamp(1.5rem, 3vw, 3rem); }
.stamp-quick li { display: grid; grid-template-columns: 2rem minmax(0, 1fr); gap: .65rem; padding: 1.15rem 0; border-top: 1px solid #bad0c0; }
.stamp-quick li > span { color: #9c4e37; font: 700 .8rem/1.7 'DM Sans', sans-serif; }
.stamp-quick p { margin: 0; font-size: .96rem; }
.stamp-clues { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(.8rem, 2.2vw, 1.8rem); margin-top: 2.6rem; }
.stamp-clues article { border-top: 3px solid #6e9784; padding: 1rem .2rem 0; }
.stamp-clues article > span { display: block; margin-bottom: .75rem; color: #a35840; font-size: 2rem; line-height: 1; }
.stamp-clues p { margin: 0; font-size: .91rem; }
.stamp-formats { margin: 2rem auto 0; max-width: 990px; border-top: 1px solid var(--stamp-rule); }
.stamp-formats article { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.1fr) minmax(0, 2.4fr); gap: 1rem; align-items: baseline; padding: 1.35rem 0; border-bottom: 1px solid var(--stamp-rule); }
.stamp-formats article > span { color: #a1543c; font-size: .76rem; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; }
.stamp-formats h3 { margin: 0; }
.stamp-formats p { margin: 0; font-size: .91rem; }
.stamp-boundary { max-width: 860px; margin: 2rem auto 0; padding: 1.35rem 1.55rem; border-left: 4px solid #aa6747; background: #f4eee5; }
.stamp-boundary strong { display: block; margin-bottom: .35rem; }
.stamp-boundary p { margin: 0; }
.stamp-setbacks, .stamp-faq { max-width: 850px; margin-inline: auto; border-top: 1px solid var(--stamp-rule); }
.stamp-setbacks details, .stamp-faq details { border-bottom: 1px solid var(--stamp-rule); }
.stamp-setbacks summary, .stamp-faq summary { min-height: 48px; padding: 1rem .2rem; font-weight: 700; cursor: pointer; }
.stamp-setbacks p, .stamp-faq p { padding: 0 .2rem 1rem; margin: 0; }
.stamp-phrases { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; max-width: 900px; margin: 1.7rem auto 0; }
.stamp-phrase { padding: 1.35rem; border: 1px solid var(--stamp-rule); background: var(--stamp-paper); border-radius: .5rem; }
.stamp-phrase strong { display: block; font-size: .88rem; }
.stamp-phrase p { margin: .9rem 0 .25rem; font-size: 1.15rem; font-weight: 700; }
.stamp-phrase small { display: block; color: var(--stamp-muted); font-size: .8rem; }
.stamp-phrase button { margin-top: 1rem; min-height: 44px; padding: .65rem .95rem; border: 1px solid #1b4e50; border-radius: .35rem; color: #fff; background: #1b4e50; cursor: pointer; font: inherit; font-size: .84rem; font-weight: 700; }
.stamp-phrase button:hover { background: #2c6867; }
.stamp-next { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .8rem; }
.stamp-next a { display: grid; align-content: start; gap: .65rem; min-height: 9rem; padding: 1.25rem; border: 1px solid var(--stamp-rule); border-radius: .45rem; background: var(--stamp-paper); text-decoration: none; }
.stamp-next a strong { text-decoration: underline; text-underline-offset: .2em; }
.stamp-next a > span { font-size: .87rem; line-height: 1.6; }
.stamp-sources { max-width: 980px; margin: 1.7rem auto 0; padding-left: 1.5rem; columns: 2; column-gap: 2.5rem; font-size: .86rem; }
.stamp-sources li { break-inside: avoid; padding: 0 0 1rem .3rem; }
.stamp-sources p { color: var(--stamp-muted); font-size: .8rem; margin: .3rem 0 0; }
@media (max-width: 760px) {
  .stamp-guide { gap: 3rem; }
  .stamp-section__head { grid-template-columns: 2rem minmax(0, 1fr); }
  .stamp-clues, .stamp-next { grid-template-columns: 1fr; }
  .stamp-formats article { grid-template-columns: 1fr 1.7fr; }
  .stamp-formats article p { grid-column: 2; }
  .stamp-sources { columns: 1; }
}
@media (max-width: 550px) {
  .stamp-hero img { max-height: 290px; }
  .stamp-quick, .stamp-phrases { grid-template-columns: 1fr; }
  .stamp-formats article { display: block; }
  .stamp-formats article > span { display: block; margin-bottom: .45rem; }
  .stamp-formats h3 { margin-bottom: .55rem; }
  .stamp-section--quick { padding: 1rem; }
}