/* ==========================================================================
   DriverGenius Manuals Center
   Palette sampled from the U3CR01-III DriverGenius data sheet:
   orange #F05132 · charcoal #414042 · light grey #E7E8E8
   ========================================================================== */

:root {
  --orange: #f05132;
  --orange-deep: #cf3e20;
  --orange-soft: #fdece7;
  --ink: #414042;
  --ink-deep: #2c2b2d;
  --paper: #fbfaf9;
  --card: #ffffff;
  --line: #e2e1e0;
  --line-strong: #d1d3d4;
  --muted: #74727a;
  --display: "Ubuntu Condensed", "Arial Narrow", "Segoe UI", sans-serif;
  --body: "Ubuntu", "Segoe UI", Arial, sans-serif;
  --shadow: 0 18px 40px rgba(44, 43, 45, 0.16);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

[hidden] { display: none !important; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--body);
  background: var(--paper);
  color: var(--ink);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  display: block;
  height: 4px;
  background: linear-gradient(90deg, var(--orange) 0 62%, var(--ink) 62% 100%);
}

a { color: var(--orange); }
img { max-width: 100%; display: block; }

.wrap { width: min(1180px, calc(100% - 48px)); margin: 0 auto; }

/* ---------- Header ---------- */
.topbar {
  background: var(--card);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 30;
}
.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 74px;
}
.wordmark {
  font-family: var(--display);
  font-size: 30px;
  line-height: 1;
  letter-spacing: 0.01em;
  color: var(--ink);
  text-decoration: none;
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  white-space: nowrap;
}
.wordmark b { font-weight: 700; }
.wordmark .slash { color: var(--orange); font-weight: 400; }
.wordmark small {
  font-family: var(--body);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
}
.wordmark--light { color: #fff; }
.wordmark--light small { color: rgba(255, 255, 255, 0.55); }

.topnav { display: flex; align-items: center; gap: 30px; }
.topnav a {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}
.topnav a:hover { color: var(--orange); border-color: var(--orange); }
.topnav .nav-cta {
  border: 1px solid var(--ink);
  padding: 9px 16px;
  border-bottom-width: 1px;
}
.topnav .nav-cta:hover { background: var(--ink); color: #fff; border-color: var(--ink); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background: var(--ink);
  color: #fff;
  overflow: hidden;
  isolation: isolate;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(90deg, #000, transparent 72%);
  z-index: -2;
}
.hero::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 45%;
  background: linear-gradient(120deg, var(--orange) 0%, var(--orange-deep) 100%);
  clip-path: polygon(22% 0, 100% 0, 100% 100%, 0 100%);
  z-index: -1;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  align-items: center;
  gap: 40px;
  padding: 66px 0 54px;
  min-height: 430px;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.72);
  margin-bottom: 18px;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 3px;
  background: var(--orange);
}
.hero h1 {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(2.2rem, 4.1vw, 3.35rem);
  line-height: 1.04;
  letter-spacing: -0.01em;
  max-width: 15em;
  margin-bottom: 18px;
}
.hero h1 em { font-style: normal; color: var(--orange); }
.hero-lead {
  max-width: 33em;
  color: rgba(255, 255, 255, 0.74);
  font-size: 0.96rem;
  margin-bottom: 28px;
}
.hero-search { max-width: 470px; }
.hero-search .field {
  display: flex;
  align-items: center;
  background: #fff;
  border: 2px solid #fff;
  transition: border-color 0.18s ease;
}
.hero-search .field:focus-within { border-color: var(--orange); }
.hero-search svg { width: 17px; height: 17px; margin: 0 0 0 15px; flex: none; color: var(--muted); }
.hero-search input {
  flex: 1;
  border: 0;
  outline: 0;
  padding: 14px 14px;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--ink);
  background: transparent;
  min-width: 0;
}
.hero-search input::placeholder { color: #9b999f; }
.hero-search button {
  border: 0;
  background: var(--orange);
  color: #fff;
  font-family: inherit;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 0 22px;
  align-self: stretch;
  cursor: pointer;
  transition: background 0.18s ease;
}
.hero-search button:hover { background: var(--orange-deep); }
.quick-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.55);
}
.quick-tags span { padding-top: 2px; }
.quick-tags button {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.28);
  color: #fff;
  font: inherit;
  padding: 3px 10px;
  cursor: pointer;
  transition: background 0.18s ease, border-color 0.18s ease;
}
.quick-tags button:hover { background: rgba(255, 255, 255, 0.14); border-color: #fff; }

.hero-visual { position: relative; display: flex; justify-content: center; }
.hero-plate {
  position: relative;
  background: #fff;
  padding: 18px;
  width: min(330px, 88%);
  transform: rotate(-2.5deg);
  box-shadow: 0 26px 60px rgba(0, 0, 0, 0.28);
}
.hero-plate::before {
  content: "U3CR01-III";
  position: absolute;
  top: -13px;
  left: 18px;
  background: var(--ink-deep);
  color: #fff;
  font-family: var(--display);
  font-size: 12px;
  letter-spacing: 0.18em;
  padding: 3px 10px;
}
.hero-plate img { width: 100%; height: auto; }
.hero-plate figcaption {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}
.hero-plate figcaption strong { color: var(--orange); font-weight: 700; }

.hero-strip {
  border-top: 1px solid rgba(255, 255, 255, 0.13);
  background: rgba(0, 0, 0, 0.12);
}
.hero-strip ul {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  gap: 34px;
  padding: 14px 0;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.6);
}
.hero-strip li { display: flex; align-items: center; gap: 9px; }
.hero-strip li::before { content: ""; width: 5px; height: 5px; background: var(--orange); }
.hero-strip strong { color: #fff; font-weight: 700; }

/* ---------- Section furniture ---------- */
.section { padding: 56px 0 0; }
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 26px;
  padding-bottom: 18px;
  border-bottom: 2px solid var(--ink);
  margin-bottom: 0;
}
.section-head .label {
  display: flex;
  align-items: baseline;
  gap: 14px;
}
.section-head .num {
  font-family: var(--display);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--orange);
  border: 1px solid var(--orange);
  padding: 2px 7px;
}
.section-head h2 {
  font-family: var(--display);
  font-weight: 400;
  font-size: 1.9rem;
  letter-spacing: 0.01em;
  color: var(--ink);
  line-height: 1.1;
}
.section-head .count {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}
.filters { display: flex; flex-wrap: wrap; gap: 6px; }
.filters button {
  font-family: inherit;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--line-strong);
  padding: 6px 12px;
  cursor: pointer;
  transition: all 0.18s ease;
}
.filters button:hover { border-color: var(--ink); color: var(--ink); }
.filters button.active { background: var(--ink); border-color: var(--ink); color: #fff; }

/* ---------- Document rows ---------- */
.doc-list { list-style: none; }
.doc-row {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr) auto;
  gap: 22px;
  align-items: center;
  padding: 26px 18px 26px 14px;
  border-bottom: 1px solid var(--line);
  border-left: 3px solid transparent;
  transition: background 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}
.doc-row:hover {
  background: var(--card);
  border-left-color: var(--orange);
  transform: translateX(2px);
}
.doc-index {
  font-family: var(--display);
  font-size: 15px;
  letter-spacing: 0.12em;
  color: var(--line-strong);
  padding-left: 6px;
  align-self: start;
  padding-top: 2px;
}
.doc-row:hover .doc-index { color: var(--orange); }
.doc-cat {
  display: inline-block;
  font-size: 9px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--orange-deep);
  background: var(--orange-soft);
  padding: 2px 8px;
  margin-bottom: 8px;
}
.doc-title {
  font-family: var(--display);
  font-weight: 400;
  font-size: 1.55rem;
  line-height: 1.15;
  color: var(--ink);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
}
.doc-title .model {
  font-family: var(--body);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--ink);
  border: 1px solid var(--line-strong);
  padding: 2px 7px;
  white-space: nowrap;
}
.doc-desc {
  color: var(--muted);
  font-size: 0.9rem;
  max-width: 62ch;
  margin-top: 6px;
}
.doc-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  list-style: none;
  margin-top: 12px;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #9b999f;
}
.doc-meta li { display: flex; align-items: center; gap: 7px; }
.doc-meta li::before { content: ""; width: 4px; height: 4px; background: var(--orange); }
.doc-actions { display: flex; flex-direction: column; gap: 8px; min-width: 154px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--body);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 11px 18px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
  white-space: nowrap;
}
.btn-solid { background: var(--orange); color: #fff; border-color: var(--orange); }
.btn-solid:hover { background: var(--orange-deep); border-color: var(--orange-deep); }
.btn-dark { background: var(--ink); color: #fff; border-color: var(--ink); }
.btn-dark:hover { background: var(--ink-deep); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line-strong); }
.btn-ghost:hover { border-color: var(--ink); background: var(--card); }
.btn-quiet { background: transparent; color: var(--muted); border-color: transparent; padding-left: 0; padding-right: 0; }
.btn-quiet:hover { color: var(--orange); }
.btn[aria-disabled="true"] { opacity: 0.45; pointer-events: none; }

.empty-tip {
  padding: 44px 0 8px;
  color: var(--muted);
  font-size: 0.92rem;
}
.empty-tip strong { color: var(--ink); }

/* ---------- Support band ---------- */
.support-band {
  margin-top: 64px;
  background: var(--ink);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.support-band::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 34%;
  height: 6px;
  background: var(--orange);
}
.support-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr 1fr;
  gap: 40px;
  padding: 46px 0 50px;
}
.support-grid h2 {
  font-family: var(--display);
  font-weight: 400;
  font-size: 2rem;
  line-height: 1.12;
  margin: 10px 0 14px;
}
.support-grid h2 em { font-style: normal; color: var(--orange); }
.support-grid p { color: rgba(255, 255, 255, 0.66); font-size: 0.9rem; }
.support-item { border-top: 1px solid rgba(255, 255, 255, 0.16); padding-top: 14px; }
.support-item h3 {
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 10px;
}
.support-item p { margin-bottom: 10px; }
.support-item a {
  color: #fff;
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.35);
  font-size: 0.9rem;
}
.support-item a:hover { color: var(--orange); border-color: var(--orange); }
.support-note { font-size: 0.78rem !important; color: rgba(255, 255, 255, 0.45) !important; margin-top: 14px; }

/* ---------- FAQ ---------- */
.faq-grid {
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  gap: 54px;
  padding: 44px 0 72px;
}
.faq-aside h2 {
  font-family: var(--display);
  font-weight: 400;
  font-size: 2rem;
  line-height: 1.1;
  margin: 12px 0 12px;
}
.faq-aside p { color: var(--muted); font-size: 0.9rem; max-width: 30ch; }
.faq-aside .rule { width: 46px; height: 3px; background: var(--orange); margin-top: 20px; }
.faq-list details {
  border-bottom: 1px solid var(--line);
  padding: 16px 0;
}
.faq-list summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--ink);
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "+";
  font-family: var(--display);
  font-size: 20px;
  line-height: 1;
  color: var(--orange);
  transition: transform 0.18s ease;
}
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 10px;
  max-width: 62ch;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--ink);
  border-top: 4px solid var(--orange);
  color: rgba(255, 255, 255, 0.55);
  font-size: 12px;
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 26px 0;
}
.footer-inner nav { display: flex; gap: 20px; }
.footer-inner a { color: rgba(255, 255, 255, 0.75); text-decoration: none; }
.footer-inner a:hover { color: var(--orange); }
.footer-note { font-size: 11px; color: rgba(255, 255, 255, 0.38); }

/* ==========================================================================
   Manual viewer
   ========================================================================== */
body.viewer { background: #f0efee; }

.viewer-top {
  background: var(--ink);
  color: #fff;
  border-bottom: 3px solid var(--orange);
}
.viewer-top .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 62px;
  padding: 10px 0;
}
.viewer-top .wordmark { font-size: 23px; }
.viewer-top .back {
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  transition: background 0.18s ease, border-color 0.18s ease;
}
.viewer-top .back:hover { background: var(--orange); border-color: var(--orange); }
.viewer-top .crumb {
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.45);
}
.viewer-top .crumb b { color: var(--orange); font-weight: 700; }

.viewer-shell {
  display: grid;
  grid-template-columns: 318px minmax(0, 1fr);
  gap: 0;
  min-height: calc(100vh - 65px);
}
.viewer-side {
  background: var(--card);
  border-right: 1px solid var(--line);
  padding: 30px 26px 36px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.side-eyebrow {
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--orange);
  font-weight: 700;
}
.side-model {
  font-family: var(--display);
  font-size: 2.05rem;
  line-height: 1.05;
  color: var(--ink);
  letter-spacing: 0.01em;
}
.side-name { font-size: 0.92rem; color: var(--muted); margin-top: -12px; }
.side-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 700;
  border: 1px solid var(--line-strong);
  color: var(--muted);
  padding: 3px 8px;
}
.chip--brand { border-color: var(--orange-soft); background: var(--orange-soft); color: var(--orange-deep); }
.side-block { border-top: 1px solid var(--line); padding-top: 18px; }
.side-label {
  font-size: 9px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 700;
  color: #9b999f;
  margin-bottom: 10px;
}
.tabs { display: flex; flex-direction: column; gap: 4px; }
.tab-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  width: 100%;
  text-align: left;
  font-family: inherit;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-left: 3px solid transparent;
  padding: 11px 12px;
  cursor: pointer;
  transition: all 0.18s ease;
}
.tab-btn::after { content: "→"; font-size: 13px; color: var(--line-strong); }
.tab-btn:hover { background: var(--paper); color: var(--ink); }
.tab-btn.active {
  background: var(--paper);
  border-left-color: var(--orange);
  color: var(--ink);
}
.tab-btn.active::after { color: var(--orange); }
.tab-btn[hidden] { display: none; }

.select-wrap { position: relative; }
.select-wrap::after {
  content: "▾";
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--orange);
  pointer-events: none;
  font-size: 12px;
}
.select-wrap select {
  width: 100%;
  appearance: none;
  font-family: inherit;
  font-size: 12px;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line-strong);
  padding: 10px 34px 10px 12px;
  cursor: pointer;
  outline: none;
}
.select-wrap select:focus { border-color: var(--orange); }
.lang-note { font-size: 11px; color: #9b999f; margin-top: 8px; }

.doc-links { display: flex; flex-direction: column; gap: 8px; }
.doc-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 11px;
  letter-spacing: 0.04em;
  text-decoration: none;
  color: var(--ink);
  border: 1px solid var(--line);
  padding: 10px 12px;
  transition: border-color 0.18s ease, color 0.18s ease;
}
.doc-link span { font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); }
.doc-link:hover { border-color: var(--orange); color: var(--orange-deep); }
.doc-link:hover span { color: var(--orange); }
.side-help {
  margin-top: auto;
  background: var(--paper);
  border-left: 3px solid var(--orange);
  padding: 14px 14px 16px;
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.6;
}
.side-help strong { display: block; color: var(--ink); font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase; margin-bottom: 4px; }
.side-help a { color: var(--orange-deep); }

.viewer-main { display: flex; flex-direction: column; min-width: 0; padding: 18px 22px 26px; }
.viewer-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 0 2px 12px;
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}
.viewer-bar .live { display: inline-flex; align-items: center; gap: 7px; color: var(--ink); font-weight: 700; }
.viewer-bar .live::before { content: ""; width: 6px; height: 6px; background: var(--orange); }
.pane {
  flex: 1;
  min-height: 620px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 2px 10px rgba(65, 64, 66, 0.05);
  display: flex;
}
.pane iframe { width: 100%; height: 100%; min-height: 620px; border: 0; display: block; }
.pane--pdf { display: none; }
.pdf-fallback {
  font-size: 12px;
  color: var(--muted);
  padding-top: 10px;
  text-align: center;
}
.pdf-fallback a { color: var(--orange-deep); }
.pdf-fallback[hidden] { display: none; }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 980px) {
  .hero-inner { grid-template-columns: 1fr; padding: 48px 0 40px; min-height: 0; }
  .hero h1 { max-width: 18em; }
  .hero-visual { display: none; }
  .hero::after { display: none; }
  .hero { border-bottom: 4px solid var(--orange); }
  .support-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .support-grid > div:first-child { grid-column: 1 / -1; }
  .faq-grid { grid-template-columns: 1fr; gap: 24px; }
  .viewer-shell { grid-template-columns: 268px minmax(0, 1fr); }
  .viewer-side { padding: 24px 20px 28px; }
}

@media (max-width: 760px) {
  .wrap { width: calc(100% - 32px); }
  .topbar-inner { height: 64px; }
  .wordmark { font-size: 24px; }
  .wordmark small { display: none; }
  .topnav { gap: 14px; }
  .topnav a:not(.nav-cta) { display: none; }
  .topnav .nav-cta { font-size: 9px; padding: 7px 10px; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 14px; }
  .doc-row { grid-template-columns: 1fr; gap: 14px; padding: 22px 12px; }
  .doc-index { display: none; }
  .doc-actions { flex-direction: row; flex-wrap: wrap; min-width: 0; }
  .doc-actions .btn { flex: 1; }
  .doc-title { font-size: 1.3rem; }
  .hero-search button { padding: 0 14px; font-size: 10px; }
  .hero-strip ul { gap: 18px; font-size: 9px; }
  .support-grid { grid-template-columns: 1fr; padding: 34px 0 38px; }
  .faq-grid { padding: 30px 0 52px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }

  .viewer-top .crumb { display: none; }
  .viewer-shell { grid-template-columns: 1fr; min-height: 0; }
  .viewer-side { border-right: 0; border-bottom: 1px solid var(--line); }
  .viewer-side .side-help { margin-top: 4px; }
  .viewer-main { padding: 12px 12px 20px; }
  .pane, .pane iframe { min-height: calc(100vh - 200px); }
}