* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 100px; }
body { margin: 0; font-family: var(--font-body); }
a { color: var(--color-accent-700); text-decoration: none; }
a:hover { text-decoration: underline; }
button { font: inherit; }
img { max-width: 100%; height: auto; display: block; }
.wrap { width: min(1120px, calc(100% - 48px)); margin-inline: auto; }
.skip { position: absolute; left: 16px; top: -90px; z-index: 100; background: var(--color-surface); padding: 12px; }
.skip:focus { top: 12px; }
.site-header { position: sticky; top: 0; z-index: 30; background: var(--color-bg); }
.breadcrumbs { font-size: 13px; color: var(--text-muted); padding-block: 24px; }
.breadcrumbs ol { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; margin: 0; padding: 0; }
.breadcrumbs li + li::before { content: "/"; margin-right: 8px; color: var(--text-muted); }
.eyebrow { font-size: 12px; letter-spacing: .13em; color: var(--signal-blue); font-weight: 650; }
.hero { padding-block: 30px 54px; border-bottom: 1px solid var(--color-divider); }
.case-hero { max-width: 920px; }
.case-facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; margin-top: 28px; }
.case-facts > div { padding: 24px; border: 1px solid var(--color-divider); border-radius: 18px; background: var(--color-surface); }
.case-facts span, .case-facts p { font-size: 13px; color: var(--text-muted); }
.case-facts strong { display: block; font-size: clamp(25px, 3.2vw, 36px); margin-block: 12px; color: var(--signal-blue); }
.case-facts small { font-size: 14px; font-weight: 500; }
.case-flow { list-style: none; padding: 0; }
.case-flow li { display: flex; gap: 24px; padding-block: 20px; border-top: 1px solid var(--color-divider); }
.case-flow li > span { font: 24px/1.5 monospace; color: var(--signal-blue); }
.case-flow h3 { margin: 0 0 8px; }
.case-evidence { margin-block: 28px; padding: 14px; border: 1px solid var(--color-divider); border-radius: 16px; background: var(--color-surface); }
.case-evidence img { width: 100%; height: auto; border-radius: 8px; }
@media (max-width: 650px) { .case-facts { grid-template-columns: 1fr; } .case-facts > div { padding: 20px; } .case-flow li { gap: 16px; } }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); align-items: center; gap: 48px; }
h1 { font-size: clamp(32px, 4.2vw, 52px); line-height: 1.22; letter-spacing: -.025em; margin: 18px 0 24px; }
.lead { font-size: 17px; line-height: 1.9; max-width: 62ch; color: var(--color-neutral-300); }
.meta { font-size: 13px; color: var(--text-muted); margin-top: 20px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 10px 20px; border: 1px solid var(--color-divider); border-radius: 12px; color: var(--color-text); font-weight: 600; font-size: 14px; }
.button.primary { background: var(--brand-coral); color: #121a2d; border-color: var(--brand-coral); }
.button:hover { text-decoration: none; border-color: var(--color-accent-700); }
.flow-panel { background: var(--color-surface); border: 1px solid var(--color-divider); border-radius: 22px; padding: 28px; }
.flow-panel ol { list-style: none; margin: 18px 0 0; padding: 0; }
.flow-panel li { display: flex; align-items: start; gap: 16px; padding: 16px 0; border-top: 1px solid var(--color-divider); }
.flow-panel .number { color: var(--signal-blue); font: 500 22px/1.4 monospace; }
.flow-panel strong { display: block; font-size: 16px; }
.flow-panel small { display: block; font-size: 13px; color: var(--text-muted); margin-top: 4px; }
.section { padding-block: 52px; border-bottom: 1px solid var(--color-divider); }
h2 { font-size: clamp(24px, 2.8vw, 32px); line-height: 1.35; margin: 0 0 22px; }
h3 { font-size: 19px; line-height: 1.5; margin: 26px 0 10px; }
p { margin: 12px 0; }
.section-intro { max-width: 68ch; color: var(--color-neutral-300); }
.article-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; margin-top: 28px; }
.article-card { display: flex; flex-direction: column; border: 1px solid var(--color-divider); background: var(--color-surface); border-radius: 18px; padding: 26px; color: var(--color-text); }
.article-card:hover { text-decoration: none; border-color: var(--signal-blue); }
.article-card .number { font: 500 26px/1 monospace; color: var(--signal-blue); }
.article-card h3 { margin-top: 20px; }
.article-card p { color: var(--text-muted); font-size: 14px; flex: 1; }
.article-card .more { color: var(--color-accent-700); font-size: 14px; margin-top: 18px; }
.columns { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; }
.columns > div { padding: 24px; border: 1px solid var(--color-divider); border-radius: 16px; }
.columns h3 { margin-top: 0; }
.table-scroll { overflow-x: auto; border: 1px solid var(--color-divider); border-radius: 14px; margin-block: 24px; }
table { border-collapse: collapse; width: 100%; font-size: 14px; text-align: left; }
th, td { padding: 16px 18px; border-bottom: 1px solid var(--color-divider); vertical-align: top; }
th { background: var(--color-surface); font-weight: 600; }
tr:last-child td { border-bottom: 0; }
.sample-table { min-width: 560px; }
.sample-table td:nth-child(-n+3) { font: 12px/1.7 monospace; white-space: nowrap; }
.note { padding: 16px 20px; border-left: 3px solid var(--signal-blue); border-radius: 0 10px 10px 0; background: var(--color-surface); font-size: 14px; color: var(--color-neutral-300); }
.faq details { padding: 18px 0; border-top: 1px solid var(--color-divider); }
.faq summary { cursor: pointer; font-weight: 600; padding-right: 24px; }
.faq details p { color: var(--color-neutral-300); padding-right: 12px; }
.cta { margin-block: 48px; padding: 36px; border: 1px solid var(--color-divider); background: var(--color-surface); border-radius: 20px; }
.cta h2 { margin-bottom: 12px; }
.cta p { color: var(--color-neutral-300); max-width: 72ch; }
.footer { border-top: 1px solid var(--color-divider); padding-block: 32px; font-size: 13px; color: var(--text-muted); }
.footer .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.footer strong { color: var(--color-text); }
.site-footer [data-split] > div { min-width: 0; }
@media (max-width: 860px) {
  .site-footer [data-split] { grid-template-columns: 1fr !important; }
}
.article-title { max-width: 920px; }
.article-layout { display: grid; grid-template-columns: minmax(0, 760px) minmax(0, 240px); gap: 64px; align-items: start; }
.article-body { min-width: 0; font-size: 16px; line-height: 1.95; }
.article-body .section { padding-block: 40px; }
.article-body ul, .article-body ol { padding-left: 24px; }
.article-body li { margin: 8px 0; }
.toc { position: sticky; top: 105px; padding-block: 40px; font-size: 13px; }
.toc strong { display: block; margin-bottom: 14px; }
.toc a { display: block; padding-block: 8px; color: var(--text-muted); }
.toc a:hover { color: var(--color-accent-700); }
.shots { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; margin-block: 28px; }
figure { margin: 0; }
.shots figure { padding: 20px; border: 1px solid var(--color-divider); border-radius: 16px; background: var(--color-surface); }
.shots img { width: min(100%, 240px); margin: auto; border-radius: 8px; }
figcaption { font-size: 13px; line-height: 1.7; color: var(--text-muted); margin-top: 16px; }
.video-link { display: block; margin-block: 24px; border: 1px solid var(--color-divider); border-radius: 14px; padding: 20px; }
.video-link span { display: block; color: var(--text-muted); font-size: 13px; margin-top: 4px; }
.related { margin-top: 40px; }
.related a { display: block; margin-block: 12px; }
html[data-theme="light"] .logo-dark { display: none; }
html[data-theme="signal"] .logo-light { display: none; }
html[data-theme="light"] .lead,
html[data-theme="light"] .section-intro,
html[data-theme="light"] .note,
html[data-theme="light"] .faq p,
html[data-theme="light"] .cta p { color: var(--color-text); }
html[data-theme="light"] .eyebrow,
html[data-theme="light"] .flow-panel .number,
html[data-theme="light"] .article-card .number { color: #25717d; }
html[data-theme="light"] .button.primary { color: #121a2d; }
@media (max-width: 860px) {
  .hero-grid, .article-layout { grid-template-columns: 1fr; gap: 28px; }
  .article-grid { grid-template-columns: 1fr; }
  .toc { position: static; padding-block: 20px; border-bottom: 1px solid var(--color-divider); grid-row: 1; }
  .toc a { display: inline-block; margin-right: 16px; }
  .hero { padding-top: 12px; }
}
@media (max-width: 560px) {
  .wrap { width: calc(100% - 36px); }
  .breadcrumbs { padding-block: 18px; }
  .hero { padding-bottom: 32px; }
  .lead { font-size: 16px; }
  .section { padding-block: 36px; }
  .columns { grid-template-columns: 1fr; gap: 16px; }
  .shots { gap: 16px; grid-template-columns: 1fr; }
  .shots figure { padding: 10px; }
  .shots img { width: min(100%, 280px); }
  .shots figcaption { font-size: 12px; }
  .cta { padding: 24px; }
  th, td { padding: 12px 10px; font-size: 13px; }
  h1 { font-size: 32px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }