:root { --text-dim: #9aaec1; }

html { scroll-padding-top: 88px; }
a:focus-visible { outline: 2px solid var(--cyan); outline-offset: 5px; }
#hero { min-height: 0; padding-bottom: 72px; }
#hero .hero-title { line-height: 1.2; }
#adoption-guide { padding-top: 0; scroll-margin-top: 90px; }
.adoption-guide { border: 1px solid #284155; background: #0b1522; padding: clamp(22px, 4vw, 48px); }
.guide-intro { display: grid; grid-template-columns: 1.12fr 1fr; align-items: center; gap: 28px; padding-bottom: 38px; border-bottom: 1px solid #284155; }
.guide-intro .section-title { font-size: clamp(1.7rem, 2.8vw, 2.4rem); line-height: 1.35; }
.guide-lead { max-width: 580px; color: var(--text-dim); font-size: .94rem; line-height: 1.8; }
.guide-cover { display: block; width: 100%; max-width: 370px; height: auto; min-width: 0; justify-self: end; border: 1px solid #20394d; }
.guide-summary { list-style: none; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; margin: 27px 0; }
.guide-summary li { min-width: 0; padding: 18px 0; }
.guide-summary .guide-data-type { display: block; margin-bottom: 10px; font-size: 11px; }
.guide-summary h3 { font-size: .97rem; margin-bottom: 9px; }
.guide-summary p { color: var(--text-dim); font-size: .84rem; line-height: 1.8; }
.guide-details { border: 1px solid #284155; }
.guide-details summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 17px 21px; color: #c0eaff; font-size: .93rem; cursor: pointer; list-style: none; background: #101f30; }
.guide-details summary::-webkit-details-marker { display: none; }
.guide-details summary:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }
.guide-details-mark { font: 24px/1 var(--mono); color: var(--cyan); transition: transform .15s; }
.guide-details[open] .guide-details-mark { transform: rotate(45deg); }
.guide-details-body { padding: 0 24px 28px; }
.guide-block { padding-top: 36px; }
.adoption-guide h3 { color: #f2f6fa; font-size: 1.15rem; font-weight: 700; line-height: 1.5; }
.adoption-guide h4 { color: #f2f6fa; font-size: 1rem; line-height: 1.5; margin-bottom: 9px; }
.guide-questions { list-style: none; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; margin-top: 22px; }
.guide-questions li { border-top: 1px solid #284155; padding-top: 17px; }
.guide-number { display: block; color: var(--cyan); font: 15px var(--mono); letter-spacing: .12em; margin-bottom: 13px; }
.guide-questions p { color: var(--text-dim); font-size: .91rem; line-height: 1.8; }
.guide-block-heading { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; }
.guide-badge { display: inline-block; border: 1px solid #236276; padding: 3px 9px; color: #82e3ff; background: #0c2735; font-size: .73rem; line-height: 1.6; }
.guide-badge.is-optional { color: #efcd98; border-color: #655338; background: #24251f; margin-bottom: 13px; }
.guide-block-note { color: var(--text-dim); font-size: .86rem; margin: 11px 0 20px; }
.guide-data-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.guide-data-card { background: #101f30; border: 1px solid #284155; padding: 25px; min-width: 0; }
.guide-data-type { color: var(--cyan); font: 12px var(--mono); letter-spacing: .12em; margin-bottom: 14px; }
.guide-data-card ul, .guide-optional ul { padding-left: 18px; color: var(--text-dim); font-size: .9rem; line-height: 1.8; }
.guide-data-card li + li, .guide-optional li + li { margin-top: 7px; }
.guide-fields { display: flex; flex-wrap: wrap; gap: 6px; border-top: 1px solid #284155; padding-top: 17px; margin-top: 18px; }
.guide-fields code { font: 12px/1.6 ui-monospace, SFMono-Regular, Consolas, monospace; color: #b5cbdc; background: #0b1522; border: 1px solid #284155; padding: 2px 6px; overflow-wrap: anywhere; }
.guide-support-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; margin-top: 36px; padding-top: 30px; border-top: 1px solid #284155; }
.guide-optional h3, .guide-quality h3 { margin-bottom: 16px; }
.guide-optional strong { color: #d2e0ec; font-weight: 600; }
.guide-checklist { list-style: none; font-size: .9rem; line-height: 1.8; color: var(--text-dim); }
.guide-checklist li { position: relative; padding-left: 24px; margin-bottom: 9px; }
.guide-checklist li::before { content: ''; position: absolute; top: .5em; left: 1px; width: 10px; height: 6px; border-left: 1.5px solid var(--green); border-bottom: 1.5px solid var(--green); transform: rotate(-45deg); }
.guide-handoff { display: flex; align-items: center; justify-content: space-between; gap: 28px; background: transparent; padding: 30px 0 0; margin-top: 30px; border-top: 1px solid #284155; }
.guide-handoff p { color: var(--text-dim); font-size: .9rem; margin-top: 9px; max-width: 710px; }
.guide-handoff .btn-outline { flex-shrink: 0; border-color: #36788e; color: #bcefff; letter-spacing: .02em; }
.guide-handoff .btn-outline span { margin-left: 8px; }

@media (max-width: 900px) {
  .guide-intro { grid-template-columns: 1fr; gap: 24px; }
  .guide-cover { display: none; }
  .guide-summary { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 20px; margin: 18px 0; }
  .guide-questions { grid-template-columns: 1fr; gap: 18px; }
  .guide-questions li { display: flex; gap: 18px; }
  .guide-number { flex-shrink: 0; margin-top: 4px; }
  .guide-handoff { align-items: flex-start; flex-direction: column; gap: 20px; }
}
@media (max-width: 600px) {
  #hero { padding-bottom: 48px; }
  .hero-actions > a { width: 100%; text-align: center; letter-spacing: .04em; }
  .adoption-guide { padding: 24px 19px; }
  .guide-intro { padding-bottom: 25px; }
  .guide-intro .section-title { font-size: 1.55rem; }
  .guide-data-grid, .guide-support-grid { grid-template-columns: 1fr; }
  .guide-data-card { padding: 21px 17px; }
  .guide-summary li { padding: 10px 0; }
  .guide-details summary { padding: 16px 14px; font-size: .87rem; }
  .guide-details-body { padding: 0 14px 21px; }
  .guide-support-grid { gap: 26px; }
  .guide-handoff .btn-outline { width: 100%; text-align: center; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero-tag, .hero-title, .hero-desc, .hero-actions { animation: none; }
}