/* Home: an editorial engineering field manual. */
.container {
  width:min(1240px,calc(100% - 96px));
  margin-inline:auto
}
.site-header {
  position:sticky;
  top:0;
  z-index:50;
  background:var(--bg);
  border-bottom:1px solid var(--ink)
}
.nav-wrap {
  height:80px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px
}
.desktop-nav {
  display:flex;
  gap:25px;
  font-size:var(--text-secondary)
}
.desktop-nav a {
  padding:9px 0
}
.desktop-nav a:hover,.desktop-nav a.active {
  color:var(--brand-deep)
}
.nav-actions {
  display:flex;
  gap:22px;
  align-items:center
}
.nav-actions .account-nav {
  font-size:var(--text-secondary);
  display:flex;
  gap:6px;
  align-items:center
}
.account-avatar:empty {
  display:none
}
.menu-btn {
  display:none;
  border:1px solid var(--ink);
  padding:9px;
  background:transparent
}
.menu-btn span {
  display:block;
  width:19px;
  height:1px;
  background:var(--ink);
  margin:4px 0
}
.mobile-nav {
  display:none
}
.hero {
  background:radial-gradient(ellipse at 78% 38%,#EBD9BB55,transparent 57%);
  padding-top:24px
}
.issue-line {
  display:flex;
  justify-content:space-between;
  color:var(--muted);
  font-family:var(--mono);
  font-size:var(--text-decorative);
  letter-spacing:1px
}
.hero-grid {
  display:grid;
  grid-template-columns:1.02fr 1fr;
  gap:38px;
  align-items:center;
  padding:40px 0 48px
}
.hero-copy .eyebrow {
  font-size:var(--text-secondary);
  letter-spacing:2px;
  margin-bottom:12px
}
.hero h1 {
  font-size:clamp(40px,4.55vw,66px);
  line-height:1.4;
  margin:0 0 16px;
  letter-spacing:-2px
}
.hand-underline {
  color:var(--brand-deep);
  position:relative;
  white-space:nowrap
}
.hand-underline:after {
  content:'';
  position:absolute;
  left:0;
  right:0;
  bottom:-8px;
  height:13px;
  background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 300 14'%3E%3Cpath d='M2 9Q45 1 88 8T170 7T252 8T298 5' fill='none' stroke='%23D97728' stroke-width='3'/%3E%3C/svg%3E") center/100% 100% no-repeat
}
.hero-lead {
  font-size:var(--text-body);
  line-height:2;
  margin-bottom:16px
}
.hero-cta {
  display:flex;
  gap:25px;
  align-items:center
}
.hero-meta {
  display:flex;
  gap:15px;
  font-family:var(--mono);
  font-size:var(--text-decorative);
  color:var(--muted);
  margin-top:22px
}
.hero-meta span+span {
  border-left:1px solid var(--line);
  padding-left:15px
}
.hero-meta span span {
  border:0;
  padding:0
}
.hero-note {
  margin-top:31px;
  font-family:var(--serif);
  color:var(--muted);
  font-size:var(--text-secondary)
}
.hero-note>span {
  color:var(--brand-deep);
  font-size:24px;
  margin-right:10px
}
.hero-visual {
  position:relative;
  margin-top:12px;
  padding-bottom:32px;
  min-width:0
}
.drawing-sheet {
  position:relative;
  background:var(--paper);
  border:1px solid var(--ink);
  box-shadow:9px 10px 0 var(--sand);
  transform:rotate(-3deg);
  padding:18px
}
.sheet-head,.sheet-title {
  display:flex;
  justify-content:space-between;
  gap:10px;
  font-family:var(--mono);
  font-size:var(--text-small);
  color:var(--muted)
}
.sheet-head {
  padding-bottom:12px;
  border-bottom:1px solid var(--line)
}
.sheet-head span:last-child {
  font-size:var(--text-small)
}
.engineering-drawing {
  display:block;
  width:100%;
  height:auto;
  margin:18px 0
}
.sheet-title {
  border-top:1px solid var(--line);
  padding-top:10px
}
.studio-spark {
  position:absolute;
  color:var(--brand);
  width:70px;
  right:-20px;
  top:-45px;
  z-index:2;
  transform:rotate(13deg)
}
.translation-slip {
  position:absolute;
  right:-7px;
  bottom:17px;
  width:78%;
  background:var(--paper);
  border:1px solid var(--ink);
  padding:17px 22px 12px;
  box-shadow:5px 5px 0 var(--ink);
  transform:rotate(3deg)
}
.slip-kicker {
  display:block;
  font:var(--text-small) var(--mono);
  letter-spacing:1px;
  border-bottom:1px dashed var(--line);
  padding-bottom:10px;
  margin-bottom:10px
}
.translation-slip>div {
  display:grid;
  grid-template-columns:1fr 20px;
  gap:2px 10px;
  font:var(--text-secondary) var(--mono)
}
.translation-slip strong {
  font:18px var(--serif);
  grid-row:2;
  grid-column:1
}
.translation-slip b {
  grid-column:2;
  grid-row:1/3;
  font-size:28px;
  color:var(--brand-deep)
}
.translation-slip p {
  font-size:var(--text-secondary);
  margin:10px 0 0
}
.translation-slip p span {
  padding:0 10px
}
.round-stamp {
  position:absolute;
  left:-15px;
  bottom:6px;
  width:91px;
  height:91px;
  border:1px dashed var(--brand-deep);
  border-radius:50%;
  text-align:center;
  padding-top:13px;
  color:var(--brand-deep);
  font:var(--text-decorative)/1.6 var(--mono);
  transform:rotate(-12deg)
}
.round-stamp b {
  font:24px Georgia,serif
}
.hero-bottom {
  display:flex;
  justify-content:space-between;
  font:var(--text-small) var(--mono);
  color:var(--muted);
  border-top:1px solid var(--line);
  padding:17px 0 22px
}
/* Quiet engineering-process ribbon; not a live task-progress indicator. */
.ticker { position:relative; overflow:hidden; border-bottom:1px solid var(--sand); background:var(--sand-light); }
.ribbon-inner { width:min(1240px,calc(100% - 96px)); margin-inline:auto; height:56px; display:grid; grid-template-columns:1fr auto 1fr; align-items:center; gap:24px; }
.ribbon-caption { display:flex; align-items:center; gap:10px; font:13px/1.2 var(--serif); letter-spacing:.08em; }
.ribbon-mark { color:var(--brand-deep); font:24px var(--serif); }
.ribbon-caption small { display:block; margin-top:4px; font:9px/1.2 var(--mono); letter-spacing:.1em; color:var(--muted); }
.ticker-track { position:relative; display:flex; align-items:center; gap:46px; list-style:none; padding:0; margin:0; }
.process-step { position:relative; display:flex; align-items:center; gap:8px; white-space:nowrap; color:var(--muted); }
.process-step strong { font:500 15px/1.4 var(--serif); letter-spacing:.12em; }
.step-no { display:grid; place-items:center; width:24px; height:24px; border:1px solid var(--sand); border-radius:50%; font:10px var(--mono); }
.process-step:not(:last-child)::after { content:""; position:absolute; width:22px; height:1px; right:-34px; background:var(--sand); }
.js .process-step { animation:process-ink 6s ease-in-out infinite; }
.js .process-step:nth-child(2) { animation-delay:-4.5s; }
.js .process-step:nth-child(3) { animation-delay:-3s; }
.js .process-step:nth-child(4) { animation-delay:-1.5s; }
.js .step-no { border-color:currentColor; }
@keyframes process-ink { 0% { color:var(--brand-deep); transform:translateY(0); } 6% { color:var(--brand-deep); transform:translateY(-4px); } 12%,20% { color:var(--brand-deep); transform:translateY(0); } 26%,95% { color:var(--muted); transform:translateY(0); } 100% { color:var(--brand-deep); transform:translateY(0); } }
.js .step-no { animation:process-stamp 6s ease-out infinite; animation-delay:inherit; }
@keyframes process-stamp { 0%,20%,100% { color:var(--paper); background:var(--brand-deep); box-shadow:0 0 0 0 transparent; } 6% { color:var(--paper); background:var(--brand-deep); box-shadow:0 0 0 5px rgb(217 119 40 / 16%); } 26%,95% { color:inherit; background:transparent; box-shadow:0 0 0 0 transparent; } }
.js .ticker-track::before { content:""; position:absolute; z-index:1; left:3%; bottom:-9px; width:7px; height:7px; border-radius:50%; background:var(--brand); box-shadow:-5px 0 0 rgb(217 119 40 / 20%),0 0 8px rgb(217 119 40 / 28%); animation:process-packet 6s cubic-bezier(.45,0,.2,1) infinite; pointer-events:none; }
.js .ticker-track::after { content:""; position:absolute; left:3%; right:3%; bottom:-6px; height:1px; background:var(--sand); pointer-events:none; }
@keyframes process-packet { 0%,8% { left:3%; opacity:1; } 25%,33% { left:34%; opacity:1; } 50%,58% { left:65%; opacity:1; } 75%,88% { left:97%; opacity:1; } 94% { left:97%; opacity:0; } 95% { left:3%; opacity:0; } 100% { left:3%; opacity:1; } }
.js .ticker::after { content:""; position:absolute; bottom:0; left:-20%; width:20%; height:1px; background:linear-gradient(90deg,transparent,var(--brand),transparent); animation:process-trace 6s linear infinite; pointer-events:none; }
@keyframes process-trace { to { transform:translateX(600%); } }
.ribbon-tools { display:flex; justify-content:flex-end; align-items:center; gap:16px; }
.ribbon-format { color:var(--muted); font:11px var(--mono); letter-spacing:.08em; white-space:nowrap; }
.ticker-toggle { display:grid; place-items:center; width:32px; height:32px; padding:0; color:var(--brand-deep); background:transparent; border:1px solid var(--sand); border-radius:50%; font:13px var(--mono); cursor:pointer; }
.ticker-toggle[hidden] { display:none; }
.ticker-toggle:hover { background:var(--paper); border-color:var(--brand-deep); }
.ticker.is-paused .process-step,.ticker.is-paused .step-no,.ticker.is-paused .ticker-track::before,.ticker.is-paused::after { animation-play-state:paused; }
@media(max-width:1000px) { .ribbon-inner { width:calc(100% - 48px); gap:16px; } .ribbon-caption small { display:none; } .ticker-track { gap:32px; } .process-step:not(:last-child)::after { width:14px; right:-23px; } .ribbon-format { display:none; } }
@media(max-width:600px) { .ribbon-inner { width:calc(100% - 32px); height:52px; grid-template-columns:minmax(0,1fr) auto; gap:14px; } .ribbon-caption { display:none; } .ticker-track { justify-content:space-between; gap:12px; } .process-step { gap:5px; } .process-step strong { font-size:13px; letter-spacing:.03em; } .step-no { width:20px; height:20px; font-size:9px; } .process-step:not(:last-child)::after { display:none; } .ribbon-tools { gap:0; } }
@media(prefers-reduced-motion:reduce) { .ticker-toggle,.ticker::after,.js .ticker-track::before,.js .ticker-track::after { display:none; } .process-step { color:var(--ink); transform:none; } .js .step-no { border-color:var(--sand); color:inherit; background:transparent; box-shadow:none; } }
.section-pad {
  padding:32px 0
  }
.section-head {
  display:flex;
  justify-content:space-between;
  align-items:flex-end;
  gap:40px;
  margin-bottom:24px
}
.section-head h2 {
  font-size:clamp(30px,3vw,43px);
  margin:0
}
.section-head>p,.section-head>div>p {
  font-size:var(--text-secondary);
  max-width:340px;
  line-height:1.9;
  margin-bottom:4px
}
.craft-grid {
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:24px;
  align-items:start;
  counter-reset:craft
}
.craft-card {
  position:relative;
  padding:30px 32px 40px;
  border-top:2px solid var(--ink);
  border-bottom:1px solid var(--line);
  min-height:260px;
  overflow:hidden
}
.craft-card:nth-child(2) {
  margin-top:48px;
  background:var(--sand-light)
}
.craft-card:nth-child(3) {
  background:var(--sand-light)
}
.craft-card:nth-child(4) {
  margin-top:35px
}
.card-number {
  display:block;
  font:38px Georgia,serif;
  margin-bottom:20px;
  color:var(--brand-deep)
}
.craft-card .section-kicker {
  font-size:var(--text-decorative);
  margin-bottom:12px
}
.craft-card h3 {
  font-size:25px;
  margin-bottom:13px
}
.craft-card p {
  font-size:var(--text-secondary);
  max-width:85%;
  margin-bottom:0
}
.card-glyph {
  position:absolute;
  right:24px;
  top:25px;
  font:56px Georgia,serif;
  color:var(--brand-deep)
}
.privacy-strip {
  border-block:1px solid var(--line);
  display:flex;
  gap:40px;
  align-items:center;
  margin-top:46px;
  padding:23px 0
}
.privacy-strip b {
  font-family:var(--serif);
  white-space:nowrap
}
.privacy-strip p {
  font-size:var(--text-secondary);
  margin:0
}
.proof-section {
  background:var(--ink);
  color:var(--paper)
}
.proof-section p {
  color:#C9C1B4
}
.proof-section .section-kicker,.proof-section .em-org {
  color:#EDA460
}
.proof-spark {
  width:76px;
  color:var(--brand)
}
.b-tech-top {
  display:grid;
  grid-template-columns:1.2fr 1fr;
  gap:40px;
  margin-bottom:38px
}
.b-tech h3 {
  font-size:22px;
  max-width:400px
}
.b-tech p {
  font-size:var(--text-secondary);
  line-height:1.9
}
.tech-points {
  list-style:none;
  padding:0;
  margin:0;
  font-size:var(--text-secondary)
}
.tech-points li {
  padding:12px 0;
  border-bottom:1px solid #5E584D;
  color:#C9C1B4
}
.tech-points b {
  display:inline-block;
  color:var(--paper);
  margin-right:18px
}
.cmp-carousel {
  padding:20px;
  border:1px solid #736B5E
}
.cmp-head {
  display:flex;
  justify-content:space-between;
  font:var(--text-small) var(--mono);
  margin-bottom:17px
}
.cmp-zoom {
  color:#C9C1B4
}
.cmp-viewport {
  overflow:hidden;
  position:relative;
  background:#fff
}
.cmp-track {
  display:flex;
  transition:transform .35s
}
.cmp-slide {
  flex:0 0 100%;
  min-width:0;
  margin:0
}
.cmp-slide img {
  display:block;
  width:100%;
  cursor:zoom-in
}
.cmp-nav {
  position:absolute;
  top:46%;
  width:40px;
  height:40px;
  border:1px solid var(--ink);
  background:var(--paper);
  color:var(--ink)
}
.cmp-prev {
  left:12px
}
.cmp-next {
  right:12px
}
.cmp-nav svg {
  width:20px;
  fill:none;
  stroke:currentColor;
  stroke-width:2
}
.cmp-dots {
  display:flex;
  justify-content:center;
  gap:10px;
  padding-top:17px
}
.cmp-dot {
  width:22px;
  height:5px;
  border:0;
  background:#8D8374;
  padding:0
}
.cmp-dot.active {
  background:var(--brand)
}
.b-work {
  margin-top:52px;
  padding-top:30px;
  border-top:1px solid #736B5E
}
.b-head h3 {
  font-size:26px
}
.steps {
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  list-style:none;
  padding:0;
  margin:35px 0 0
}
.steps li {
  display:flex;
  gap:14px;
  align-items:flex-start;
  border-top:1px solid #736B5E;
  padding-top:20px
}
.steps b {
  font:25px Georgia,serif;
  color:#EDA460
}
.steps .s-ic {
  display:none
}
.steps span {
  font-size:var(--text-secondary)
}
.steps small {
  display:block;
  font-size:var(--text-secondary);
  color:#C9C1B4;
  margin-top:5px
}
.pass-grid {
  display:grid;
  grid-template-columns:1fr 1.1fr;
  gap:35px
}
.pass-card {
  position:relative;
  border:1px solid var(--ink);
  background:var(--paper);
  padding:36px;
  box-shadow:5px 5px 0 var(--sand)
}
.pass-card:before,.pass-card:after {
  content:'';
  position:absolute;
  width:20px;
  height:20px;
  background:var(--bg);
  border:1px solid var(--ink);
  border-radius:50%;
  bottom:49px
}
.pass-card:before {
  left:-11px;
  clip-path:inset(0 0 0 50%)
}
.pass-card:after {
  right:-11px;
  clip-path:inset(0 50% 0 0)
}
.pass-featured {
  background:var(--sand-light)
}
.pass-card h3 {
  font-size:27px
}
.pass-card p {
  font-size:var(--text-secondary);
  min-height:58px
}
.ticket-code {
  display:block;
  font-size:var(--text-decorative);
  border-top:1px dashed var(--line);
  padding-top:20px;
  margin-top:32px
}
.faq-list {
  counter-reset:faq;
  border-top:4px double var(--ink)
}
.faq-item {
  border-bottom:4px double var(--line);
  counter-increment:faq
}
.faq-q {
  display:flex;
  align-items:center;
  gap:22px;
  width:100%;
  padding:23px 0;
  border:0;
  background:transparent;
  text-align:left;
  color:var(--ink);
  font-family:var(--serif);
  font-size:18px
}
.faq-q:before {
  content:'0' counter(faq);
  font:var(--text-decorative) var(--mono);
  color:var(--brand-deep)
}
.faq-q i {
  margin-left:auto;
  font-style:normal;
  font:24px var(--mono)
}
.faq-item.open .faq-q i {
  transform:rotate(45deg)
}
.faq-a {
  display:none;
  padding:0 50px 23px
}
.faq-item.open .faq-a {
  display:block
}
.faq-a p {
  font-size:var(--text-body);
  line-height:1.9;
  margin:0
}
.download-section {
  padding:40px 0;
  background:var(--sand);
  border-block:1px solid var(--ink)
}
.download-inner {
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:45px
}
.download-inner h2 {
  font-size:40px
}
.download-inner p {
  max-width:560px;
  font-size:var(--text-body);
  margin-bottom:0
}
.download-action {
  flex:0 0 310px;
  display:flex;
  flex-direction:column;
  align-items:stretch
}
.download-action>.btn {
  width:100%
}
.download-action small {
  display:block;
  text-align:center;
  font:var(--text-secondary) var(--mono);
  margin-top:18px;
  color:var(--muted)
}
.download-section .managed-release {
  display:grid;
  gap:10px;
  width:100%;
  margin-top:12px
}
.download-section .managed-release-link {
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:42px;
  margin:0;
  padding:8px 13px;
  border:1px solid color-mix(in srgb,var(--ink) 45%,transparent);
  background:color-mix(in srgb,var(--paper) 40%,transparent);
  font-size:var(--text-small);
  font-weight:600;
  line-height:1.4;
  transition:background .16s,transform .16s
}
.download-section .managed-release-link span:last-child {
  font:17px var(--mono)
}
.download-section .managed-release-link:hover {
  background:var(--paper);
  transform:translateY(-1px)
}
.download-section .managed-release details {
  width:100%;
  padding-top:3px;
  border-top:1px solid color-mix(in srgb,var(--ink) 25%,transparent);
  font-size:var(--text-small)
}
.download-section .managed-release summary {
  cursor:pointer;
  color:var(--muted);
  line-height:1.6
}
.download-section .managed-release details p {
  margin:8px 0 0;
  color:var(--muted);
  font-size:var(--text-small);
  line-height:var(--leading-secondary)
}
.site-footer {
  padding:24px 0
}
.footer-grid {
  display:grid;
  grid-template-columns:1.3fr 1fr .7fr;
  gap:40px;
  font-size:var(--text-small)
}
.footer-grid p {
  margin:16px 0 6px
}
.footer-links {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:10px
}
.footer-copy {
  text-align:right;
  color:var(--muted);
  font:var(--text-copyright)/2 var(--mono)
}
.to-top {
  position:fixed;
  right:26px;
  bottom:84px;
  width:40px;
  height:40px;
  z-index:40;
  background:var(--paper);
  border:1px solid var(--ink);
  display:none
}
.to-top.show {
  display:block
}
.to-top svg {
  width:20px;
  fill:none;
  stroke:currentColor;
  stroke-width:1.5
}
.lightbox {
  display:none;
  position:fixed;
  inset:0;
  background:#262521F5;
  z-index:2000;
  align-items:center;
  justify-content:center;
  padding:65px 25px 25px
}
.lightbox.show {
  display:flex
}
.lightbox img {
  max-width:100%;
  max-height:85vh;
  object-fit:contain
}
.lightbox-close {
  position:absolute;
  right:25px;
  top:20px;
  padding:8px 17px;
  background:var(--paper);
  border:1px solid var(--ink)
}
body.menu-open {
  overflow:hidden
}
.toast {
  display:none;
  position:fixed;
  bottom:30px;
  left:50%;
  transform:translateX(-50%);
  padding:15px 25px;
  background:var(--ink);
  color:var(--paper);
  z-index:150;
  max-width:90%;
  font-size:var(--text-secondary)
}
.toast.show {
  display:block
}
/* Tool and editorial pages share a quiet paper workspace. */
.account-header {
  min-height:76px;
  padding:18px 32px;
  border-bottom:1px solid var(--ink);
  display:flex;
  gap:22px;
  align-items:center;
  background:var(--bg)
}
.account-home {
  margin-left:auto;
  font-size:var(--text-secondary)
}
.portal-page,.legal-page {
  width:min(1100px,calc(100% - 64px));
  margin:52px auto 70px;
  min-height:52vh
}
.portal-card {
  padding:36px;
  border:1px solid var(--line);
  border-top:3px solid var(--ink);
  background:var(--paper)
}
.portal-topbar {
  border-bottom:1px solid var(--line);
  padding-bottom:18px;
  margin-bottom:16px
}
.portal-back {
  font-size:var(--text-secondary);
  color:var(--brand-deep)
}
.portal-page h1,.legal-page h1 {
  font-size:38px;
  margin-bottom:18px
}
.portal-page h2,.legal-page h2 {
  font-size:24px;
  margin-top:26px
}
.portal-page p,.legal-page p {
  font-size:var(--text-body);
  line-height:1.9
}
.legal-page {
  max-width:820px
}
.legal-page h1 {
  border-bottom:4px double var(--ink);
  padding-bottom:24px
}
.legal-note {
  border-left:3px solid var(--brand);
  padding:16px;
  background:var(--sand-light)
}
.portal-grid {
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px
}
.portal-empty,.table-empty {
  padding:28px 15px;
  text-align:center;
  color:var(--muted);
  font-size:var(--text-secondary);
  background:var(--sand-light)
}
.profile-form,.contact-form,.translate-form {
  display:grid;
  gap:18px;
  max-width:800px
}
.profile-form label,.contact-form label,.translate-options label {
  display:grid;
  gap:7px;
  font-size:var(--text-secondary)
}
.profile-form input,.contact-form input {
  width:100%
}
.glossary-toolbar,.table-actions {
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:12px;
  margin:24px 0
}
.glossary-toolbar input {
  flex:1;
  min-width:180px
}
.glossary-form {
  display:grid;
  grid-template-columns:1fr 1fr 1fr auto;
  gap:10px
}
.glossary-form input {
  min-width:0;
  width:100%
}
.table-scroll {
  overflow:auto;
  max-width:100%;
  border-block:1px solid var(--line);
  margin-top:22px
}
.glossary-table {
  width:100%;
  border-collapse:collapse;
  text-align:left;
  font-size:var(--text-secondary);
  min-width:630px
}
.glossary-table th {
  background:var(--sand-light);
  font-family:var(--mono);
  font-size:var(--text-secondary);
  font-weight:400
}
.glossary-table td,.glossary-table th {
  padding:14px;
  border-bottom:1px solid var(--line);
  overflow-wrap:anywhere;
  max-width:350px
}
.table-actions {
  font-size:var(--text-secondary)
}
.table-actions input {
  width:auto
}
.file-button {
  position:relative;
  overflow:hidden
}
.file-button input {
  position:absolute;
  opacity:0;
  inset:0;
  cursor:pointer;
  min-width:0;
  width:100%
}
.dropzone {
  display:grid;
  gap:12px;
  text-align:center;
  border:1px dashed var(--brand-deep);
  background:var(--sand-light);
  padding:32px
}
.dropzone span {
  font-size:var(--text-secondary)
}
.dropzone input {
  max-width:100%;
  margin:auto
}
.translate-options {
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:16px
}
.device-row,.order-row {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:20px 0;
  border-bottom:1px solid var(--line);
  font-size:var(--text-secondary);
  overflow-wrap:anywhere
}
.device-row span {
  display:block;
  color:var(--muted);
  font-size:var(--text-secondary)
}
.file-list {
  font:var(--text-secondary) var(--mono);
  overflow-wrap:anywhere
}
.status-dot {
  color:var(--brand-deep)
}
.history-filter {
  width:min(100%,420px)
}
@media(min-width:1500px) {
  .hero-grid {
    padding-block:48px 60px
  }
}
@media(max-width:1100px) {
  .container {
    width:calc(100% - 64px)
  }
  .desktop-nav {
    gap:16px
  }
  .desktop-nav a:first-child {
    display:none
  }
  .nav-actions {
    gap:14px
  }
  .hero-grid {
    gap:30px;
    padding-top:65px
  }
  .hero h1 {
    font-size:46px
  }
  .hero-cta {
    gap:16px;
    flex-wrap:wrap
  }
  .studio-spark {
    right:0
  }
  .b-tech-top {
    gap:35px
  }
  .glossary-form {
    grid-template-columns:1fr 1fr
  }
  .hero-meta {
    gap:8px
  }
  .hero-meta span+span {
    padding-left:8px
  }
}
@media(max-width:850px) {
  .desktop-nav {
    display:none
  }
  .menu-btn {
    display:block
  }
  .nav-wrap {
    height:68px
  }
  .mobile-nav.open {
    display:flex;
    padding:20px 32px;
    gap:25px;
    border-top:1px solid var(--line);
    flex-wrap:wrap
  }
  .hero-grid {
    grid-template-columns:1fr;
    gap:60px;
    padding:48px 0 45px
  }
  .hero h1 {
    font-size:56px
  }
  .hero-copy {
    max-width:620px
  }
  .hero-visual {
    max-width:540px;
    width:95%;
    margin:10px auto
  }
  .hero-lead br.desktop-break {
    display:none
  }
  .issue-line span:last-child {
    display:none
  }
  .hero-note {
    margin-top:22px
  }
  .hero-bottom {
    gap:20px
  }
  .section-pad {
    padding:32px 0
  }
  .section-head {
    gap:25px
  }
  .b-tech-top {
    grid-template-columns:1fr;
    gap:15px
  }
  .steps {
    grid-template-columns:1fr 1fr
  }
  .pass-card {
    padding:25px
  }
  .pass-grid {
    gap:24px
  }
  .footer-grid {
    grid-template-columns:1fr 1fr
  }
  .footer-copy {
    grid-column:1/-1;
    text-align:left
  }
  .download-inner {
    align-items:flex-start;
    flex-direction:column
  }
  .portal-page,.legal-page {
    width:calc(100% - 40px);
    margin:30px auto
  }
  .portal-card {
    padding:24px
  }
  .privacy-strip {
    display:block
  }
  .privacy-strip p {
    margin-top:10px
  }
  .craft-card h3 {
    font-size:22px
  }
  .craft-card {
    padding:23px
  }
  .craft-card p {
    max-width:100%
  }
  .card-glyph {
    font-size:38px;
    right:15px
  }
}
@media(max-width:540px) {
  .container {
    width:calc(100% - 40px)
  }
  .brand {
    font-size:22px
  }
  .brand img {
    width:29px
  }
  .nav-wrap {
    gap:10px
  }
  .nav-actions {
    gap:12px
  }
  .nav-actions>.btn {
    display:none
  }
  .nav-actions .account-nav {
    font-size:var(--text-secondary)
  }
  .hero h1 {
    font-size:40px;
    letter-spacing:-1px
  }
  .hero-copy .eyebrow {
    font-size:var(--text-secondary);
    letter-spacing:1px
  }
  .hero-grid {
    padding-top:40px;
    gap:42px
  }
  .hero-lead {
    font-size:var(--text-body)
  }
  .hero-cta {
    gap:23px
  }
  .hero-meta {
    flex-wrap:wrap;
    font-size:var(--text-decorative)
  }
  .hero-note {
    font-size:var(--text-secondary)
  }
  .hero-visual {
    width:94%;
    padding-bottom:80px
  }
  .drawing-sheet {
    padding:12px;
    box-shadow:5px 6px 0 var(--sand)
  }
  .sheet-head {
    font-size:var(--text-small)
  }
  .sheet-head span:last-child {
    display:none
  }
  .sheet-title {
    font-size:var(--text-small)
  }
  .studio-spark {
    width:44px;
    top:-27px;
    right:-12px
  }
  .translation-slip {
    width:82%;
    right:-6px;
    bottom:16px;
    padding:12px 15px
  }
  .translation-slip>div {
    font-size:var(--text-secondary)
  }
  .translation-slip strong {
    font-size:var(--text-body)
  }
  .slip-kicker {
    font-size:var(--text-small)
  }
  .round-stamp {
    width:67px;
    height:67px;
    font-size:var(--text-decorative);
    left:-14px;
    bottom:18px;
    padding-top:6px
  }
  .round-stamp b {
    font-size:18px
  }
  .hero-bottom {
    font-size:var(--text-small)
  }
  .hero-bottom span:first-child {
    max-width:170px
  }
  .section-head {
    display:block;
    margin-bottom:30px
  }
  .section-head h2 {
    font-size:31px
  }
  .section-head>p {
    margin-top:24px
  }
  .section-head .inline-link {
    display:inline-block;
    margin-top:20px
  }
  .craft-grid {
    grid-template-columns:1fr;
    gap:20px
  }
  .craft-card {
    min-height:225px
  }
  .craft-card:nth-child(n) {
    margin-top:0
  }
  .craft-card:nth-child(even) {
    background:var(--sand-light)
  }
  .craft-card:nth-child(3) {
    background:transparent
  }
  .craft-card h3 {
    font-size:23px
  }
  .card-glyph {
    font-size:48px
  }
  .craft-card p {
    max-width:90%
  }
  .proof-spark {
    display:none
  }
  .cmp-carousel {
    padding:10px
  }
  .cmp-head {
    font-size:var(--text-small)
  }
  .cmp-nav {
    width:30px;
    height:30px
  }
  .cmp-prev {
    left:5px
  }
  .cmp-next {
    right:5px
  }
  .steps {
    gap:16px
  }
  .steps li {
    gap:10px
  }
  .steps span {
    font-size:var(--text-secondary)
  }
  .pass-grid {
    grid-template-columns:1fr;
    gap:27px
  }
  .pass-card {
    padding:28px
  }
  .pass-card h3 {
    font-size:24px
  }
  .faq-q {
    font-size:var(--text-body);
    gap:13px;
    padding-block:21px
  }
  .faq-a {
    padding:0 0 23px 30px
  }
  .download-inner h2 {
    font-size:32px
  }
  .download-action {
    width:100%
  }
  .download-action .btn {
    width:100%
  }
  .footer-grid {
    grid-template-columns:1fr;
    gap:28px
  }
  .footer-copy {
    grid-column:auto
  }
  .footer-links {
    max-width:290px
  }
  .portal-page,.legal-page {
    width:calc(100% - 28px)
  }
  .portal-card {
    padding:20px 16px
  }
  .portal-page h1,.legal-page h1 {
    font-size:30px
  }
  .account-header {
    padding:15px 18px;
    gap:12px;
    flex-wrap:wrap
  }
  .portal-grid,.translate-options,.glossary-form {
    grid-template-columns:1fr
  }
  .glossary-toolbar {
    gap:8px
  }
  .glossary-toolbar .btn {
    padding:9px 12px;
    font-size:var(--text-secondary)
  }
  .device-row,.order-row {
    flex-wrap:wrap
  }
  .to-top {
    right:16px
  }
}
/* File pickers must not impose an intrinsic desktop width on small screens. */
.translate-form,.translate-form>* {
  min-width:0
}
.dropzone input[type=file] {
  width:100%;
  min-width:0
}
.dropzone {
  overflow-wrap:anywhere
}
.status-row {
  display:flex;
  justify-content:space-between;
  gap:20px;
  padding:18px 0;
  border-bottom:1px solid var(--line);
  font-size:var(--text-secondary)
}
.status-dot {
  display:inline-block;
  width:7px;
  height:7px;
  background:var(--brand-deep);
  margin-right:10px;
  border-radius:50%
}
.lightbox { z-index:var(--z-lightbox); overscroll-behavior:contain; }
body.lightbox-open { overflow:hidden; }
@media (max-width:600px) { .lightbox { padding:56px 12px calc(12px + env(safe-area-inset-bottom)); } .lightbox img { max-height:calc(100dvh - 100px); } .lightbox-close { top:12px; right:12px; min-width:44px; min-height:44px; } }



.cmp-slide{position:relative}.study-image-status{position:absolute;inset:0;display:grid;place-items:center;padding:24px;text-align:center;background:#f5f0e6;color:#685744;pointer-events:none}.image-fallback{opacity:0}

/* Reading rhythm without changing the editorial layout or display headings. */
.hero-lead,.craft-card p,.pass-card p,.faq-a p,.download-inner p { line-height:var(--leading-body); }
.hero-lead { max-width:620px; }
.section-head>p,.section-head>div>p { font-size:var(--text-subtitle); line-height:1.65; }
.steps span { font-size:var(--text-workflow); line-height:1.4; }
.steps small { line-height:var(--leading-secondary); }
.hero-cta,.sheet-head,.sheet-title { flex-wrap:wrap; }
.footer-grid a { font-size:var(--text-small); }
.hero-copy .eyebrow { letter-spacing:1px; }
/* Mixed Chinese/English labels convey meaning, so they are not tiny decoration. */
.issue-line>span:last-child,.craft-card:first-child .section-kicker,.pass-card .section-kicker { font-size:var(--text-small); }
.footer-copy>span { font-size:var(--text-small); }
.site-announcement{max-width:1100px;margin:20px auto;padding:16px 22px;border:1px solid #cad6bc;border-radius:12px;background:#f2f5e9;color:#23332d;white-space:pre-wrap;overflow-wrap:anywhere}.managed-help{padding-top:36px;padding-bottom:36px}.managed-help p,.managed-release p{white-space:pre-wrap;overflow-wrap:anywhere}.managed-help a,.managed-release a{display:inline-block;margin:12px 20px 12px 0}.managed-release{margin-top:14px}.managed-release details{max-width:800px}
/* Managed announcements use the same paper, ink and fine rules as the site. */
.site-announcement{border-color:var(--sand);border-left:3px solid var(--brand-deep);border-radius:2px;background:var(--paper);color:var(--ink);font-size:var(--text-body);line-height:var(--leading-body)}
/* Compatibility is an editorial part of the engineering hero, not an admin toolbar. */
.hero-compatibility{display:grid;grid-template-columns:1fr 2fr auto;align-items:center;gap:28px;margin-top:16px;padding:16px 0;border-block:1px solid var(--sand);background:transparent}
.compatibility-intro .section-kicker{font-size:11px;letter-spacing:1.2px}
.compatibility-intro h2{margin:8px 0 0;font-family:var(--serif);font-size:25px;font-weight:500;line-height:1.25}
.compatibility-intro h2 br{display:none}
.compatibility-hosts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;list-style:none;padding:0;margin:0}
.compatibility-hosts li{display:flex;align-items:flex-start;gap:12px;min-width:0}
.compatibility-number{color:var(--brand-deep);font:12px/1.8 var(--mono)}
.compatibility-hosts strong{display:block;font-family:var(--serif);font-size:25px;font-weight:600;line-height:1.35;white-space:nowrap}
.compatibility-hosts div>span{display:block;color:var(--muted);font:12px/1.6 var(--mono);letter-spacing:.4px;margin-top:5px}
.compatibility-note{font-size:12px;color:var(--muted);line-height:1.8;margin:0}
@media(max-width:1280px){.hero-compatibility{grid-template-columns:1fr 2.4fr;gap:20px}.compatibility-note{grid-column:2}.compatibility-intro h2 br{display:block}.compatibility-hosts{gap:18px}.compatibility-hosts strong{font-size:22px}}
@media(max-width:760px){.hero-compatibility{grid-template-columns:minmax(0,1fr);gap:18px;padding-block:20px;margin-top:18px}.compatibility-intro h2{font-size:25px}.compatibility-intro h2 br{display:none}.compatibility-hosts{gap:12px}.compatibility-hosts li{gap:7px}.compatibility-hosts strong{font-size:18px}.compatibility-note{grid-column:1}.compatibility-note br{display:none}.compatibility-hosts div>span{font-size:11px}}

/* Hero Animation Details */
.drawing-scanner { position: absolute; left: 18px; right: 18px; height: 2px; background: var(--brand); box-shadow: 0 0 10px var(--brand); animation: scan-vertical 6s infinite cubic-bezier(0.4, 0, 0.2, 1); z-index: 10; pointer-events: none; }
@keyframes scan-vertical { 0%, 15% { top: 18px; opacity: 0; } 20% { top: 18px; opacity: 1; } 45%, 80% { top: calc(100% - 18px); opacity: 1; } 85% { top: calc(100% - 18px); opacity: 0; } 100% { top: 18px; opacity: 0; } }
.svg-lang-en { animation: fade-out-en 6s infinite cubic-bezier(0.4, 0, 0.2, 1); }
.svg-lang-zh { opacity: 0; animation: fade-in-zh 6s infinite cubic-bezier(0.4, 0, 0.2, 1); font-family: var(--body); }
@keyframes fade-out-en { 0%, 30% { opacity: 1; } 35%, 85% { opacity: 0; } 90%, 100% { opacity: 1; } }
@keyframes fade-in-zh { 0%, 30% { opacity: 0; } 35%, 85% { opacity: 1; } 90%, 100% { opacity: 0; } }
.translation-slip strong { position: relative; display: inline-block; }
.translation-slip strong::after { content: ""; position: absolute; top: -2px; right: -2px; bottom: -2px; left: -2px; background: var(--paper); border-left: 2px solid var(--brand); animation: type-slip 6s infinite steps(8, end); }
@keyframes type-slip { 0%, 35% { left: 0; opacity: 1; } 45%, 85% { left: 100%; opacity: 1; } 86%, 100% { left: 100%; opacity: 0; } }

/* Reduced motion presents a complete readable static translation. */
@media(prefers-reduced-motion:reduce) {
  .drawing-scanner,.translation-slip strong::after { display:none; }
  .svg-lang-en { opacity:0; }
  .svg-lang-zh { opacity:1; }
}

/* Compact carousel playback control, aligned with the engineering study toolbar. */
.cmp-autoplay { flex: 0 0 auto; border: 1px solid var(--line, #d8ccb8); background: transparent; color: inherit; font: inherit; font-size: 12px; padding: 6px 9px; cursor: pointer; }
.cmp-autoplay[hidden] { display: none; }

@media (max-width: 600px) { #workflow .cmp-controls { flex-wrap: wrap; } #workflow .cmp-autoplay { order: 4; flex-basis: 100%; } }

.study-image-status[hidden] { display: none; }