/* Win95 USB Lab article. Scoped to keep the existing research pages intact. */
.usb-page { --usb-accent: #42654c; }
.usb-skip { position: absolute; left: 16px; top: -100px; z-index: 100; padding: 12px 18px; background: var(--paper); color: var(--ink); }
.usb-skip:focus { top: 12px; }
.usb-shell { max-width: 1180px; margin: auto; padding: 64px 28px 90px; }
.usb-hero { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 48px; align-items: center; padding-bottom: 48px; }
.usb-hero .eyebrow { color: var(--usb-accent); margin-bottom: 18px; }
.usb-hero h1 { font-size: clamp(2.7rem, 5.7vw, 4.8rem); line-height: 1.06; max-width: 750px; }
.usb-dek { margin-top: 24px; font-size: 1.12rem; max-width: 640px; }
.usb-date { font-size: .83rem; margin-top: 24px; color: var(--body); }
.usb-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; align-items: center; }
.usb-actions a { display: inline-flex; align-items: center; min-height: 46px; padding: 10px 18px; border: 1px solid var(--usb-accent); border-radius: 999px; font-weight: 600; font-size: .9rem; color: var(--usb-accent); }
.usb-actions a:first-child { background: var(--usb-accent); color: white; }
.usb-actions a:hover { box-shadow: 0 3px 14px #42654c22; text-decoration: underline; text-underline-offset: 3px; }
.usb-window { background: var(--paper); border: 1px solid var(--line-2); border-radius: 12px; box-shadow: 12px 14px 0 var(--cream-3); overflow: hidden; }
.usb-window-bar { display: flex; justify-content: space-between; background: var(--usb-accent); color: white; padding: 12px 16px; font-family: var(--mono); font-size: .78rem; }
.usb-window-content { padding: 26px 24px; }
.usb-window-content > p { font-family: var(--mono); color: var(--usb-accent); font-size: .83rem; margin-bottom: 16px; }
.usb-sequence { list-style: none; counter-reset: phase; }
.usb-sequence li { counter-increment: phase; display: grid; grid-template-columns: 32px 1fr; gap: 14px; padding: 14px 0; border-top: 1px solid var(--line); }
.usb-sequence li::before { content: "0" counter(phase); color: var(--clay-deep); font-family: var(--mono); font-size: .8rem; }
.usb-sequence strong { display: block; color: var(--ink); font-size: .96rem; }
.usb-sequence span { display: block; font-size: .85rem; margin-top: 2px; }
.usb-window figcaption { padding: 14px 24px; background: var(--cream-2); border-top: 1px solid var(--line); font-size: .8rem; }
.usb-status { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; margin: 12px 0 56px; }
.usb-status > div { padding: 22px; background: var(--paper); }
.usb-status dt { color: var(--ink); font-size: .95rem; font-weight: 600; margin-bottom: 6px; }
.usb-status dd { font-size: .88rem; }
.usb-layout { display: grid; grid-template-columns: 215px minmax(0, 1fr); gap: 60px; align-items: start; }
.usb-toc { position: sticky; top: 105px; font-size: .86rem; }
.usb-toc p { text-transform: uppercase; letter-spacing: 1.5px; color: var(--usb-accent); font-size: .7rem; margin-bottom: 14px; }
.usb-toc ol { list-style: none; border-left: 1px solid var(--line-2); }
.usb-toc a { display: block; padding: 9px 14px; }
.usb-toc a:hover { color: var(--usb-accent); background: var(--sage-soft); }
.usb-story { min-width: 0; font-size: 1.04rem; }
.usb-story section { scroll-margin-top: 100px; }
.usb-story h2 { font-size: clamp(1.8rem, 3.4vw, 2.6rem); line-height: 1.2; margin: 0 0 22px; }
.usb-story h3 { font-size: 1.45rem; line-height: 1.3; margin: 28px 0 12px; }
.usb-story h4 { font-family: var(--sans); color: var(--ink); font-size: 1rem; margin: 24px 0 12px; }
.usb-story p { margin-bottom: 18px; }
.usb-story a { color: var(--usb-accent); text-decoration: underline; text-underline-offset: 3px; overflow-wrap: anywhere; }
.usb-story strong { color: var(--ink); }
.usb-story > section + section { margin-top: 56px; padding-top: 42px; border-top: 1px solid var(--line); }
.usb-note { padding: 22px 24px; border-left: 3px solid var(--clay-deep); background: var(--clay-soft); border-radius: 0 10px 10px 0; margin: 26px 0; }
.usb-note p:last-child { margin-bottom: 0; }
.usb-findings { display: grid; gap: 18px; }
.usb-findings > div { padding: 24px; border: 1px solid var(--line); border-radius: 12px; background: var(--paper); }
.usb-findings h3 { margin-top: 0; font-size: 1.35rem; }
.usb-findings p:last-child { margin-bottom: 0; }
.usb-story ul, .usb-story ol { margin: 0 0 22px 1.4em; }
.usb-story li { margin-bottom: 10px; }
.usb-story code { font-family: var(--mono); font-size: .85em; color: var(--clay-deep); overflow-wrap: anywhere; }
.usb-story pre { background: var(--cream-2); border: 1px solid var(--line); border-radius: 10px; padding: 18px; overflow: auto; margin: 24px 0; font-size: .85rem; line-height: 1.7; }
.usb-story pre code { overflow-wrap: normal; color: var(--ink); }
.usb-paper { font-size: 1rem; }
.usb-paper h2, .usb-paper h3, .usb-paper h4 { scroll-margin-top: 100px; }
.usb-paper h3 { margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--line); }
.usb-paper .usb-table-wrap { overflow-x: auto; margin: 24px 0; border: 1px solid var(--line); border-radius: 10px; }
.usb-paper table { width: 100%; min-width: 560px; border-collapse: collapse; font-size: .86rem; line-height: 1.55; }
.usb-paper th, .usb-paper td { padding: 12px 14px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
.usb-paper th { background: var(--usb-accent); color: white; font-weight: 500; }
.usb-paper th:first-child { width: 25%; }
.usb-paper tr:nth-child(even) td { background: var(--cream-2); }
.usb-paper tr:last-child td { border-bottom: 0; }
.usb-paper .usb-paper-label { color: var(--usb-accent); letter-spacing: 2px; text-transform: uppercase; font-size: .75rem; }
.usb-resources { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 26px; }
.usb-resources a { padding: 18px; background: var(--paper); border: 1px solid var(--line); border-radius: 10px; font-size: .9rem; }
.usb-page .nav { flex-wrap: wrap; gap: 12px; }
@media (max-width: 900px) {
  .usb-hero { gap: 28px; }
  .usb-layout { grid-template-columns: minmax(0, 1fr); gap: 36px; }
  .usb-toc { position: static; }
  .usb-toc ol { display: flex; flex-wrap: wrap; border-left: 0; gap: 4px; }
  .usb-toc a { background: var(--cream-2); border-radius: 6px; }
}
@media (max-width: 640px) {
  .usb-shell { padding: 38px 20px 56px; }
  .usb-hero { grid-template-columns: minmax(0, 1fr); padding-bottom: 28px; }
  .usb-window { box-shadow: 6px 7px 0 var(--cream-3); }
  .usb-status { grid-template-columns: minmax(0, 1fr); margin-bottom: 30px; }
  .usb-status > div { padding: 18px; }
  .usb-resources { grid-template-columns: minmax(0, 1fr); }
  .usb-story { font-size: 1rem; }
  .usb-page .nav-links { gap: 18px; font-size: .85rem; }
}
@media print {
  .usb-page .nav, .usb-toc, .usb-actions, .usb-page .site-footer, .usb-skip { display: none; }
  .usb-shell { max-width: none; padding: 0; }
  .usb-layout, .usb-hero { display: block; }
  .usb-window { margin: 24px 0; box-shadow: none; break-inside: avoid; }
  .usb-status { margin-bottom: 24px; }
  .usb-story { color: #222; font-size: 10pt; }
  .usb-story h2, .usb-story h3, .usb-story h4 { break-after: avoid; }
  .usb-paper .usb-table-wrap, .usb-story pre { overflow: visible; }
  .usb-paper table { min-width: 0; }
  .usb-story pre { white-space: pre-wrap; overflow-wrap: anywhere; }
  .usb-story a { color: #222; }
}