/* Shared styles for sub-pages: products, solutions, about, downloads, support */

.page-hero {
  background: var(--ink);
  color: var(--paper);
  padding: clamp(28px, 4vw, 56px) 0 clamp(24px, 3.5vw, 48px);
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(900px 500px at 90% 10%, color-mix(in oklab, var(--brand) 25%, transparent), transparent 60%);
  pointer-events: none;
}
.page-hero .container { position: relative; }
.page-hero .eyebrow { color: var(--accent); }
.page-hero .eyebrow::before { background: var(--accent); }
.page-hero h1 {
  font-size: clamp(28px, 4.4vw, 56px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 16px 0 16px;
  color: var(--paper);
  max-width: 22ch;
}
.page-hero p.lead {
  color: rgba(255,255,255,0.7);
  max-width: 56ch;
  margin: 0;
}

/* ---------- Products grid ---------- */
.product-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid var(--steel-200);
  flex-wrap: wrap;
}
.filter-tabs {
  display: flex;
  gap: 4px;
  border: 1px solid var(--steel-200);
  border-radius: 2px;
  padding: 3px;
  background: var(--paper);
  flex-wrap: wrap;
}
.filter-tabs button {
  background: transparent;
  border: 0;
  padding: 8px 16px;
  font-size: 13.5px;
  color: var(--ink-3);
  border-radius: 2px;
  font-family: inherit;
}
.filter-tabs button:hover { color: var(--ink); }
.filter-tabs button.on {
  background: var(--ink);
  color: var(--paper);
}
.product-count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--steel-500);
  letter-spacing: 0.06em;
}

.product-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding: 56px 0 96px;
}
@media (max-width: 960px) { .product-list { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .product-list { grid-template-columns: 1fr; } }

.cat-row {
  grid-column: 1 / -1;
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 32px 0 8px;
  border-bottom: 1px solid var(--steel-200);
  margin-bottom: 8px;
  flex-wrap: wrap;
}
.cat-row .num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--steel-500);
  letter-spacing: 0.1em;
  flex-shrink: 0;
}
.cat-row h2 {
  font-size: 24px;
  font-weight: 600;
  margin: 0;
  flex: 1;
  min-width: 0;
}
.cat-row .desc {
  margin-left: auto;
  color: var(--ink-3);
  font-size: 13.5px;
  max-width: 40ch;
  text-align: right;
}
@media (max-width: 700px) {
  .cat-row { gap: 8px; padding: 24px 0 6px; }
  .cat-row h2 { font-size: 20px; flex-basis: 100%; }
  .cat-row .desc { margin-left: 0; text-align: left; font-size: 13px; flex-basis: 100%; }
}

/* ---------- Page sections ---------- */
.page-section { padding: clamp(28px, 4vw, 56px) 0; }
.page-section-dark { background: var(--ink); color: var(--paper); }
.page-section-dark .h2, .page-section-dark .h1 { color: var(--paper); }

/* ---------- Solutions detail ---------- */
.sol-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  padding: 96px 0;
  border-bottom: 1px solid var(--steel-200);
}
.sol-detail:nth-of-type(even) { direction: rtl; }
.sol-detail:nth-of-type(even) > * { direction: ltr; }
@media (max-width: 900px) {
  .sol-detail { grid-template-columns: 1fr; gap: 32px; }
  .sol-detail:nth-of-type(even) { direction: ltr; }
}
.sol-detail .imgph { aspect-ratio: 4/3; }
.sol-detail h2 { font-size: 36px; font-weight: 700; line-height: 1.1; letter-spacing: -0.018em; margin: 16px 0 20px;}
.sol-detail .features {
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 20px;
}
.sol-detail .features li {
  font-size: 14px;
  color: var(--ink-2);
  display: flex;
  gap: 10px;
  align-items: baseline;
}
.sol-detail .features li::before {
  content: "";
  width: 6px; height: 6px;
  background: var(--brand);
  flex-shrink: 0;
  margin-top: 6px;
}

/* About page — "Our approach" two-column section */
.about-approach {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 64px;
  margin: 80px 0;
  align-items: start;
}
@media (max-width: 768px) {
  .about-approach { grid-template-columns: 1fr; gap: 32px; margin: 48px 0; }
  .about-approach > .imgph { aspect-ratio: 4 / 3 !important; max-width: 480px; }
}

/* ---------- About / timeline ---------- */
.about-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--steel-200);
  border: 1px solid var(--steel-200);
  margin: 56px 0;
}
@media (max-width: 900px) { .about-stats { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .about-stats { grid-template-columns: 1fr; } }
.about-stats > div {
  background: var(--paper);
  padding: 32px 24px;
  text-align: center;
}
.about-stats .num {
  font-size: 44px;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-feature-settings: "tnum";
  color: var(--ink);
}
.about-stats .lbl {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--steel-500);
  margin-top: 10px;
}
@media (max-width: 768px) { .about-stats { grid-template-columns: 1fr 1fr; } }

.timeline {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 0;
  margin: 56px 0;
}
.timeline-row {
  display: contents;
}
.timeline-year {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--brand);
  padding: 24px 0 24px;
  border-top: 1px solid var(--steel-200);
}
.timeline-event {
  padding: 24px 0 24px 32px;
  border-top: 1px solid var(--steel-200);
  border-left: 1px solid var(--steel-200);
  position: relative;
}
.timeline-event::before {
  content: "";
  position: absolute;
  top: 30px;
  left: -5px;
  width: 9px; height: 9px;
  background: var(--paper);
  border: 2px solid var(--brand);
  border-radius: 50%;
}
.timeline-event h4 {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 600;
}
.timeline-event p {
  margin: 0;
  font-size: 14px;
  color: var(--ink-3);
  max-width: 60ch;
}

/* ---------- Downloads / file table ---------- */
.dl-table {
  border-top: 1px solid var(--steel-200);
}
.dl-row {
  display: grid;
  grid-template-columns: 60px 1fr 140px 100px 120px;
  gap: 24px;
  padding: 20px 0;
  border-bottom: 1px solid var(--steel-200);
  align-items: center;
  transition: background .15s;
}
.dl-row:hover { background: var(--steel-50); }
.dl-row .ftype {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--paper);
  background: var(--ink);
  padding: 4px 8px;
  border-radius: 2px;
  text-align: center;
}
.dl-row .ftype.pdf { background: oklch(0.55 0.18 25); }
.dl-row .ftype.zip { background: var(--steel-700); }
.dl-row .ftype.exe { background: var(--brand-deep); }
.dl-row .ftype.jpg { background: oklch(0.55 0.16 200); }
.dl-row .fname { font-weight: 500; font-size: 15px; }
.dl-row .fdesc { font-size: 13px; color: var(--ink-3); margin-top: 4px; }
.dl-row .fmeta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--steel-500);
}
.dl-row .fbtn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
  border: 1px solid var(--steel-300);
  padding: 6px 14px;
  border-radius: 2px;
  justify-self: end;
}
.dl-row .fbtn:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }
@media (max-width: 768px) {
  .dl-row { grid-template-columns: 60px 1fr 100px; gap: 16px; }
  .dl-row .fmeta:not(.size), .dl-row .fbtn { display: none; }
}

/* ---------- Support / contact ---------- */
.support-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 64px;
  align-items: start;
  padding: 56px 0 96px;
}
@media (max-width: 900px) { .support-grid { grid-template-columns: 1fr; } }

.faq-item {
  border-bottom: 1px solid var(--steel-200);
  padding: 24px 0;
  cursor: pointer;
}
.faq-item:hover h4 { color: var(--brand); }
.faq-item h4 {
  margin: 0;
  font-size: 17px;
  font-weight: 500;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: color .15s;
}
.faq-item h4::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--steel-500);
  transition: transform .2s;
}
.faq-item[open] h4::after { content: "−"; }
.faq-item p { margin: 12px 0 0; color: var(--ink-3); font-size: 14.5px; max-width: 70ch; }

.contact-card {
  background: var(--ink);
  color: var(--paper);
  padding: 36px;
  border-radius: 4px;
  position: sticky;
  top: 96px;
}
.contact-card h3 { margin: 0 0 8px; color: var(--paper); }
.contact-card p { color: rgba(255,255,255,0.65); margin: 0 0 24px; font-size: 14px; }
.contact-card .info {
  display: flex;
  flex-direction: column;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
}
.contact-card .info > div { display: flex; flex-direction: column; gap: 2px; }
.contact-card .info label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--steel-400);
}
.contact-card .info a { color: var(--paper); }
.contact-card .info a:hover { color: var(--accent); }

/* ---------- Product detail page (BR-85V) ---------- */
.pd-hero {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 64px;
  align-items: center;
  padding: 80px 0;
  border-bottom: 1px solid var(--steel-200);
}
@media (max-width: 900px) { .pd-hero { grid-template-columns: 1fr; padding: 56px 0; } }
.pd-hero .imgph { aspect-ratio: 4/3; }
.pd-hero .pd-tags { display: flex; gap: 8px; margin-bottom: 16px; flex-wrap: wrap; }
.pd-hero h1 {
  font-size: clamp(36px, 4.4vw, 60px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 8px 0 24px;
}
.pd-hero .code {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--steel-500);
}

.spec-table {
  border-top: 1px solid var(--steel-200);
  margin-top: 24px;
}
.spec-row {
  display: grid;
  grid-template-columns: 220px 1fr;
  padding: 10px 0;
  border-bottom: 1px solid var(--steel-100);
  font-size: 17px;
}
.spec-row .k {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--steel-500);
}
.spec-row .v { color: var(--ink); font-size: 14px; }
@media (max-width: 640px) {
  .spec-row { grid-template-columns: 1fr; gap: 2px; padding: 12px 0; }
  .spec-row .k { font-size: 12px; }
}

/* Responsive 4-column matrix used on product/applications sections */
.app-matrix {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--steel-200);
  border: 1px solid var(--steel-200);
  margin-top: 48px;
}
.app-matrix > * { background: var(--paper); padding: 32px; }
@media (max-width: 960px) { .app-matrix { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .app-matrix { grid-template-columns: 1fr; }
  .app-matrix > * { padding: 24px; }
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding: 64px 0 0;
}
@media (max-width: 768px) { .feature-grid { grid-template-columns: 1fr; } }
.feat-card {
  background: var(--paper);
  border: 1px solid var(--steel-200);
  border-radius: 4px;
  padding: 28px;
}
.feat-card .num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--brand);
  display: inline-block;
  vertical-align: baseline;
  margin-right: 4px;
}
.feat-card h3 { display: inline; font-size: 18px; font-weight: 600; }
.feat-card p { display: block; margin: 10px 0 0; font-size: 13.5px; color: var(--ink-3); line-height: 1.55; }

.app-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (max-width: 768px) { .app-grid { grid-template-columns: 1fr; } }
.app-card {
  background: var(--paper);
  border: 1px solid var(--steel-200);
  border-radius: 4px;
  overflow: hidden;
}
.app-card .imgph { height: 180px; }
.app-card .body { padding: 20px 24px 24px; }
.app-card .num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--brand);
}
.app-card h3 { margin: 6px 0 8px; font-size: 17px; font-weight: 600; }
.app-card p { margin: 0; font-size: 13.5px; color: var(--ink-3); line-height: 1.55; }

/* Diagram for connectivity scenarios */
.diagram {
  background: var(--steel-50);
  border: 1px solid var(--steel-200);
  border-radius: 4px;
  padding: 32px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  align-items: stretch;
  position: relative;
  overflow: hidden;
}
@media (max-width: 768px) { .diagram { grid-template-columns: 1fr 1fr; } }
.diagram-node {
  background: var(--paper);
  border: 1px solid var(--steel-300);
  border-radius: 2px;
  padding: 18px 16px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ink-2);
  position: relative;
}
.diagram-node strong {
  display: block;
  font-size: 15px;
  font-family: var(--font-en);
  color: var(--ink);
  margin-bottom: 4px;
  letter-spacing: 0;
}
.diagram-node[data-role="hub"] { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.diagram-node[data-role="hub"] strong { color: var(--accent); }
.diagram-link {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--steel-500);
  letter-spacing: 0.1em;
  text-align: center;
  align-self: center;
  position: relative;
}
.diagram-link::before, .diagram-link::after {
  content: "";
  display: block;
  height: 1px;
  background: var(--steel-300);
  position: absolute;
  top: 50%;
  width: calc(50% - 30px);
}
.diagram-link::before { left: 0; }
.diagram-link::after { right: 0; }

/* Page TOC for product page */
.pd-toc {
  position: sticky;
  top: 68px;
  background: var(--paper);
  border-bottom: 1px solid var(--steel-200);
  z-index: 10;
}
@media (max-width: 900px) { .pd-toc { top: 60px; } }
.pd-toc-inner {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 12px 0;
  overflow-x: auto;
}
.pd-toc-inner .label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--steel-500);
  letter-spacing: 0.08em;
  margin-right: 16px;
  white-space: nowrap;
}
.pd-toc-inner a {
  font-size: 13px;
  padding: 6px 12px;
  border-radius: 2px;
  color: var(--ink-3);
  white-space: nowrap;
}
.pd-toc-inner a:hover { color: var(--ink); background: var(--steel-100); }
.pd-toc-inner .pd-toc-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--steel-500);
  padding: 6px 12px 6px 0;
  margin-right: 8px;
  border-right: 1px solid var(--steel-200);
  white-space: nowrap;
  transition: color .15s;
}
.pd-toc-inner .pd-toc-back:hover { color: var(--brand); background: transparent; }
.pd-toc-inner .pd-toc-back .arrow { font-family: var(--font-en); font-size: 14px; line-height: 1; transition: transform .15s; }
.pd-toc-inner .pd-toc-back:hover .arrow { transform: translateX(-3px); }
@media (max-width: 560px) {
  .pd-toc-inner .pd-toc-back { padding-left: 0; margin-right: 6px; }
  .pd-toc-inner .pd-toc-back .label-text { display: none; }
}