:root { color-scheme: light; --ink: #202526; --muted: #596365; --line: #d6ddde; --blue: #087dba; --soft: #f1f5f6; --green: #eaf2ed; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 40px; }
body { margin: 0; background: #fff; color: var(--ink); font-family: "Segoe UI", Arial, sans-serif; font-size: 16px; line-height: 1.65; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-underline-offset: 4px; }
a:hover { color: var(--blue); }
a:focus-visible, summary:focus-visible, .table-scroll:focus-visible { outline: 3px solid var(--blue); outline-offset: 5px; }
h1,h2,h3,p,dd { overflow-wrap: break-word; }
h1,h2,h3 { line-height: 1.2; letter-spacing: 0; }
h1 { font-size: 48px; font-weight: 650; margin: 0; }
h2 { font-size: 34px; font-weight: 600; margin: 0 0 20px; }
h3 { font-size: 20px; font-weight: 600; margin: 0 0 10px; }
p { margin: 0 0 18px; }
small { font-size: 14px; }
.section { padding: 72px max(24px, calc((100% - 1160px) / 2)); }
.eyebrow { font-size: 13px; font-weight: 650; color: var(--blue); margin-bottom: 14px; letter-spacing: 0; text-transform: uppercase; }
.site-header { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 16px max(24px, calc((100% - 1160px) / 2)); background: white; border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 20px; text-decoration: none; flex-shrink: 0; font-size: 16px; font-weight: 650; }
.brand img { width: 116px; height: 44px; object-fit: contain; }
.brand small { display: block; font-weight: 400; color: var(--muted); font-size: 12px; }
nav { display: flex; gap: 24px; font-size: 14px; }
nav a { text-decoration: none; white-space: nowrap; }
nav a[aria-current="page"] { text-decoration: underline; }
.header-contact { font-size: 14px; white-space: nowrap; }
.product-opening { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, .9fr); align-items: center; gap: 64px; padding-top: 54px; padding-bottom: 48px; }
.opening-copy > p:not(.eyebrow):not(.lead) { max-width: 36em; color: var(--muted); }
.lead { font-size: 24px; line-height: 1.4; margin: 18px 0 24px; }
.opening-links { display: flex; flex-wrap: wrap; gap: 24px; margin-top: 28px; font-weight: 600; font-size: 15px; }
.product-photo { margin: 0; }
.product-image { position: relative; width: 100%; aspect-ratio: 1.2; overflow: hidden; }
.product-photo img { position: absolute; width: 190%; max-width: none; height: auto; left: -45%; top: -78%; }
figcaption { color: var(--muted); font-size: 13px; margin-top: 14px; }
.product-photo figcaption { text-align: center; }
.key-specs { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); margin: 0; padding: 24px max(24px, calc((100% - 1160px) / 2)); background: var(--soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.key-specs div { padding: 0 24px; border-left: 1px solid var(--line); }
.key-specs div:first-child { padding-left: 0; border-left: 0; }
.key-specs dt { font-size: 13px; color: var(--muted); }
.key-specs dd { font-size: 25px; font-weight: 600; margin: 4px 0 0; }
.key-specs small { display: block; color: var(--muted); font-size: 12px; font-weight: 400; margin-top: 4px; }
.editorial-split { display: grid; grid-template-columns: minmax(0,.85fr) minmax(0,1.15fr); gap: 80px; }
.reading-copy { color: var(--muted); }
.text-link { display: inline-block; color: var(--ink); font-size: 15px; font-weight: 600; }
.section-title { max-width: 780px; margin-bottom: 36px; }
.section-title > p:not(.eyebrow) { color: var(--muted); }
.spec-section { background: var(--soft); }
.spec-layout { display: grid; grid-template-columns: minmax(0,1.2fr) minmax(0,.8fr); gap: 64px; align-items: start; }
.spec-list { margin: 0; border-top: 2px solid var(--ink); }
.spec-list div { display: grid; grid-template-columns: minmax(0,.8fr) minmax(0,1.2fr); gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.spec-list dt { font-weight: 600; }
.spec-list dd { margin: 0; }
.spec-list small { display: block; color: var(--muted); font-size: 12px; margin-top: 6px; line-height: 1.55; }
.port-explanation img { width: 100%; margin-bottom: 28px; }
.port-explanation p { color: var(--muted); }
.source-note { font-size: 12px; color: var(--muted); line-height: 1.6; margin-top: 24px; }
.application-list { border-top: 2px solid var(--ink); }
.application-list article { display: grid; grid-template-columns: minmax(0,.55fr) minmax(0,1.45fr); gap: 40px; padding: 26px 0; border-bottom: 1px solid var(--line); }
.application-list p { max-width: 44em; color: var(--muted); }
.application-list .requirement { font-size: 13px; margin-bottom: 0; }
.protocol-section,.buddy-tools { background: var(--green); }
.protocol-list { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 32px 48px; }
.protocol-list article { border-top: 1px solid #bccfc2; padding-top: 20px; }
.protocol-list p { color: var(--muted); margin-bottom: 0; }
.buddy-feature { border-bottom: 1px solid var(--line); }
.buddy-screen { margin: 0; scroll-margin-top: 24px; }
.buddy-screen img { width: 100%; border: 1px solid var(--line); }
.buddy-summary-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 36px; margin: 36px 0 12px; }
.buddy-summary-grid article { border-top: 1px solid var(--line); padding-top: 20px; }
.buddy-summary-grid p { color: var(--muted); }
.comparison-section { background: #fafbfa; }
.table-scroll { overflow-x: auto; }
.comparison { width: 100%; border-collapse: collapse; text-align: left; font-size: 14px; }
.comparison caption { text-align: left; font-size: 13px; color: var(--muted); padding-bottom: 12px; }
.comparison th, .comparison td { padding: 15px 18px; vertical-align: top; border-bottom: 1px solid var(--line); }
.comparison thead { background: #273831; color: #fff; }
.comparison thead th { font-weight: 600; }
.comparison th:first-child { width: 25%; }
.comparison td { width: 37.5%; }
.comparison tbody th { font-weight: 600; }
.comparison-highlight { background: #e5efe8; }
.comparison-reading { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 48px; margin-top: 40px; }
.comparison-reading p { color: var(--muted); }
.faq-section details { border-top: 1px solid var(--line); padding: 20px 0; }
.faq-section details:last-child { border-bottom: 1px solid var(--line); }
summary { font-size: 18px; font-weight: 600; cursor: pointer; }
details p { color: var(--muted); max-width: 52em; margin: 16px 0 0; }
.contact-section { display: grid; grid-template-columns: minmax(0,1.3fr) minmax(0,.7fr); gap: 80px; background: var(--soft); }
.contact-section p { max-width: 36em; color: var(--muted); }
.contact-details { border-left: 1px solid var(--line); padding-left: 40px; }
.contact-details img { width: 190px; margin-bottom: 16px; }
.contact-details p { font-size: 13px; margin-bottom: 8px; }
.contact-details a { font-size: 16px; font-weight: 600; overflow-wrap: anywhere; }
footer { display: flex; flex-wrap: wrap; gap: 24px; justify-content: space-between; padding: 24px max(24px, calc((100% - 1160px) / 2)); border-top: 1px solid var(--line); font-size: 13px; color: var(--muted); }
footer p { margin: 0; }
.back-link { display: inline-block; color: var(--muted); font-size: 14px; margin-bottom: 30px; }
.buddy-opening { padding-bottom: 44px; }
.buddy-opening .lead { max-width: 28em; }
.buddy-opening .intro { max-width: 48em; color: var(--muted); }
.buddy-visual-section { padding-top: 0; }
.buddy-definition { background: var(--soft); }
.buddy-phases { list-style: none; margin: 24px 0 0; padding: 0; border-top: 2px solid var(--ink); }
.buddy-phases li { display: grid; grid-template-columns: minmax(0,.7fr) minmax(0,1.3fr); gap: 24px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.buddy-phases span { color: var(--muted); }
.tool-list { margin: 0; }
.tool-list div { display: grid; grid-template-columns: minmax(0,.8fr) minmax(0,1.2fr); gap: 40px; padding: 18px 0; border-top: 1px solid #bccfc2; }
.tool-list dt { font-weight: 600; }
.tool-list dd { margin: 0; color: var(--muted); }
.buddy-addresses { margin-top: 24px; }
.buddy-addresses div { padding: 18px 0; border-top: 1px solid var(--line); }
.buddy-addresses dt { font-weight: 600; margin-bottom: 6px; }
.buddy-addresses dd { margin: 0; color: var(--muted); }
code { font-family: Consolas, monospace; font-size: .9em; overflow-wrap: anywhere; }
.notice { border-left: 3px solid #c79627; padding: 2px 0 2px 20px; margin-top: 28px; max-width: 55em; }
.notice p:last-child { margin-bottom: 0; }
@media (max-width: 1100px) {
  .site-header { flex-wrap: wrap; gap: 12px; }
  nav { order: 3; width: 100%; flex-wrap: wrap; gap: 12px 24px; }
  .product-opening { gap: 32px; }
  .editorial-split,.spec-layout { gap: 40px; }
}
@media (max-width: 760px) {
  .section { padding: 48px 20px; }
  .site-header { padding: 14px 20px; }
  .brand { gap: 12px; font-size: 14px; }
  .brand img { width: 90px; height: 34px; }
  nav { gap: 10px 20px; font-size: 13px; }
  h1 { font-size: 36px; } h2 { font-size: 28px; } h3 { font-size: 19px; } .lead { font-size: 21px; }
  .product-opening,.editorial-split,.spec-layout,.contact-section { grid-template-columns: 1fr; gap: 28px; }
  .product-photo { max-width: 420px; margin: 0 auto; }
  .key-specs { padding: 20px; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 24px 16px; }
  .key-specs div { padding: 0; border-left: 0; } .key-specs dd { font-size: 22px; }
  .spec-list div { font-size: 14px; gap: 12px; }
  .application-list article,.buddy-phases li,.tool-list div { grid-template-columns: 1fr; gap: 8px; }
  .protocol-list,.buddy-summary-grid,.comparison-reading { grid-template-columns: 1fr; gap: 24px; }
  .comparison { font-size: 12px; }
  .comparison th,.comparison td { padding: 12px 8px; overflow-wrap: anywhere; }
  .comparison th:first-child { width: 26%; } .comparison td { width: 37%; }
  .contact-details { border-left: 0; border-top: 1px solid var(--line); padding: 24px 0 0; }
  .buddy-visual-section { padding-top: 0; }
  footer { padding: 24px 20px; flex-direction: column; gap: 12px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }