/* ============================================================
   Lingyi Aviation — Heavy Lift Drone Website
   Design: Industrial Precision / Aerospace Technical
   ============================================================ */
:root {
  --ink: #0A1628;
  --ink-soft: #1C2E4A;
  --steel: #3D5A80;
  --accent: #FF6B35;
  --accent-deep: #E04E1A;
  --signal: #00D9A3;
  --paper: #FFFFFF;
  --paper-2: #F4F6F9;
  --paper-3: #E8ECF2;
  --line: #D5DCE6;
  --muted: #6B7A90;
  --radius: 4px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 3px rgba(10,22,40,.08);
  --shadow-md: 0 8px 28px rgba(10,22,40,.10);
  --shadow-lg: 0 24px 64px rgba(10,22,40,.16);
  --max: 1240px;
  --font-display: 'Barlow Condensed', 'Oswald', 'Arial Narrow', system-ui, sans-serif;
  --font-body: 'Inter', -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Consolas', monospace;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.65;
  font-size: 16px;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
/* ---------- Utilities ---------- */
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: '';
  width: 28px; height: 2px;
  background: var(--accent);
  display: inline-block;
}
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -.01em;
}
h1 { font-size: clamp(2.4rem, 5.6vw, 4.4rem); }
h2 { font-size: clamp(1.9rem, 3.6vw, 3rem); }
h3 { font-size: clamp(1.3rem, 2vw, 1.7rem); }
p { color: var(--ink-soft); }
.section { padding: 96px 0; }
.section--tight { padding: 64px 0; }
.section--dark { background: var(--ink); color: #fff; }
.section--dark p { color: #B8C5D6; }
.section--alt { background: var(--paper-2); }
.section-head { max-width: 760px; margin-bottom: 56px; }
.section-head h2 { margin: 14px 0 18px; }
.section-head p { font-size: 1.06rem; }
/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 32px;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all .22s cubic-bezier(.4,0,.2,1);
  white-space: nowrap;
}
.btn--primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 6px 20px rgba(255,107,53,.32);
}
.btn--primary:hover {
  background: var(--accent-deep);
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(255,107,53,.42);
}
.btn--ghost {
  border-color: rgba(255,255,255,.35);
  color: #fff;
}
.btn--ghost:hover { border-color: #fff; background: rgba(255,255,255,.09); }
.btn--outline {
  border-color: var(--ink);
  color: var(--ink);
}
.btn--outline:hover { background: var(--ink); color: #fff; }
/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 900;
  background: rgba(255,255,255,.94);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .25s;
}
.site-header.is-stuck { box-shadow: var(--shadow-md); }
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 32px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 11px;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: .02em;
  flex-shrink: 0;
}
.logo-mark {
  width: 38px; height: 38px;
  background: var(--ink);
  border-radius: 8px;
  display: grid;
  place-items: center;
  color: var(--accent);
  font-size: 1.15rem;
  font-weight: 700;
  position: relative;
  overflow: hidden;
}
.logo-mark::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 55%, rgba(255,107,53,.28) 55%);
}
.logo-sub {
  display: block;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: .22em;
  color: var(--muted);
  font-weight: 500;
  margin-top: -3px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
  list-style: none;
  margin-left: auto;
}
.nav-links a {
  font-size: .93rem;
  font-weight: 500;
  color: var(--ink-soft);
  position: relative;
  padding: 6px 0;
  transition: color .2s;
}
.nav-links a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--accent);
  transition: width .25s;
}
.nav-links a:hover, .nav-links a.active { color: var(--ink); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-cta { margin-left: 8px; }
.nav-cta .btn { padding: 11px 22px; font-size: .92rem; }
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
}
.nav-toggle span {
  width: 24px; height: 2px;
  background: var(--ink);
  transition: .25s;
}
/* ---------- Hero ---------- */
.hero {
  position: relative;
  background: var(--ink);
  color: #fff;
  overflow: hidden;
  padding: 110px 0 96px;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 78% 18%, rgba(255,107,53,.22), transparent 62%),
    radial-gradient(ellipse 50% 50% at 12% 88%, rgba(0,217,163,.13), transparent 60%);
}
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000, transparent 78%);
}
.hero .wrap { position: relative; z-index: 2; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 64px;
  align-items: center;
}
.hero h1 { margin: 20px 0 24px; }
.hero h1 em {
  font-style: normal;
  color: var(--accent);
  position: relative;
  white-space: nowrap;
}
.hero-lead {
  font-size: 1.14rem;
  color: #B8C5D6;
  max-width: 540px;
  margin-bottom: 36px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 48px; }
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.hero-stat {
  background: rgba(10,22,40,.55);
  padding: 22px 20px;
}
.hero-stat b {
  display: block;
  font-family: var(--font-display);
  font-size: 2.1rem;
  font-weight: 700;
  color: #fff;
  line-height: 1;
  margin-bottom: 6px;
}
.hero-stat b span { font-size: 1.05rem; color: var(--accent); margin-left: 3px; }
.hero-stat small {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: #8FA3BC;
}
/* Hero visual card */
.hero-visual {
  position: relative;
  aspect-ratio: 4/5;
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, #16263F 0%, #0A1628 100%);
  border: 1px solid rgba(255,255,255,.14);
  overflow: hidden;
  display: grid;
  place-items: center;
  box-shadow: var(--shadow-lg);
}
.hero-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,107,53,.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,107,53,.09) 1px, transparent 1px);
  background-size: 32px 32px;
}
.drone-graphic { position: relative; width: 82%; height: 82%; }
.drone-graphic svg { width: 100%; height: 100%; }
.hero-badge {
  position: absolute;
  bottom: 20px; left: 20px; right: 20px;
  background: rgba(255,107,53,.14);
  border: 1px solid rgba(255,107,53,.45);
  border-radius: var(--radius);
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: #FFB99C;
  backdrop-filter: blur(8px);
}
/* ---------- Trust bar ---------- */
.trustbar {
  background: var(--paper-2);
  border-bottom: 1px solid var(--line);
  padding: 22px 0;
}
.trustbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.trustbar-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
}
.trustbar-items { display: flex; gap: 40px; flex-wrap: wrap; }
.trustbar-item {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--steel);
  letter-spacing: .04em;
  opacity: .82;
}
/* ---------- Product grid ---------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.product-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all .28s cubic-bezier(.4,0,.2,1);
  display: flex;
  flex-direction: column;
  position: relative;
}
.product-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--steel);
}
.product-card-top {
  background: linear-gradient(150deg, var(--paper-2), var(--paper-3));
  padding: 26px 24px 20px;
  border-bottom: 1px solid var(--line);
  position: relative;
}
.product-model {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 8px;
}
.product-card h3 { font-size: 1.5rem; margin-bottom: 4px; }
.product-payload {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--ink);
  line-height: 1;
  margin: 14px 0 2px;
}
.product-payload span { font-size: 1rem; color: var(--muted); font-weight: 500; }
.product-card-body { padding: 20px 24px 24px; flex: 1; display: flex; flex-direction: column; }
.spec-list { list-style: none; margin-bottom: 20px; flex: 1; }
.spec-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px dashed var(--paper-3);
  font-size: .875rem;
}
.spec-list li:last-child { border-bottom: none; }
.spec-list dt, .spec-list .k { color: var(--muted); }
.spec-list .v { font-weight: 600; color: var(--ink); text-align: right; }
.card-link {
  font-family: var(--font-display);
  font-size: .95rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.card-link::after { content: '→'; transition: transform .2s; }
.product-card:hover .card-link::after { transform: translateX(5px); }
/* ---------- Feature / value grid ---------- */
.value-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.value-item {
  background: #fff;
  padding: 36px 30px;
  transition: background .25s;
}
.value-item:hover { background: var(--paper-2); }
.value-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 16px;
}
.value-item h3 { font-size: 1.28rem; margin-bottom: 10px; }
.value-item p { font-size: .93rem; }
/* ---------- Case / proof block ---------- */
.proof {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  background: #fff;
}
.proof-visual {
  background: linear-gradient(155deg, var(--ink) 0%, #16263F 100%);
  padding: 48px 40px;
  color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.proof-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 40px 40px;
}
.proof-visual > * { position: relative; }
.proof-metric {
  font-family: var(--font-display);
  font-size: clamp(3rem, 6vw, 4.6rem);
  font-weight: 700;
  line-height: 1;
  color: var(--accent);
  margin-bottom: 6px;
}
.proof-metric-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: #8FA3BC;
  margin-bottom: 34px;
}
.proof-metric + .proof-metric { margin-top: 8px; }
.proof-body { padding: 48px 44px; display: flex; flex-direction: column; justify-content: center; }
.proof-body h3 { margin-bottom: 16px; }
.proof-body p { margin-bottom: 22px; }
.proof-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.tag {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: 6px 12px;
  border-radius: 100px;
  background: var(--paper-2);
  border: 1px solid var(--line);
  color: var(--steel);
}
/* ---------- CTA band ---------- */
.cta-band {
  background: var(--ink);
  color: #fff;
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 100% at 85% 50%, rgba(255,107,53,.2), transparent 65%);
}
.cta-band .wrap { position: relative; z-index: 2; }
.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
  flex-wrap: wrap;
}
.cta-inner h2 { max-width: 620px; }
.cta-inner p { color: #B8C5D6; margin-top: 12px; max-width: 560px; }
/* ---------- Footer ---------- */
.site-footer {
  background: #07101E;
  color: #8FA3BC;
  padding: 64px 0 0;
  font-size: .9rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand .logo { color: #fff; margin-bottom: 18px; }
.footer-brand p { color: #7C8DA6; font-size: .88rem; max-width: 300px; }
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 18px;
  font-weight: 600;
}
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 11px; }
.footer-col a { color: #8FA3BC; transition: color .2s; }
.footer-col a:hover { color: var(--accent); }
.footer-contact li { display: flex; gap: 10px; align-items: flex-start; }
.footer-contact .ic { color: var(--accent); flex-shrink: 0; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 22px 0;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  font-size: .82rem;
  color: #5F7089;
}
/* ---------- WhatsApp float ---------- */
.wa-float {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 950;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
}
.wa-btn {
  width: 58px; height: 58px;
  border-radius: 50%;
  background: #25D366;
  display: grid;
  place-items: center;
  box-shadow: 0 8px 26px rgba(37,211,102,.42);
  transition: transform .22s, box-shadow .22s;
  position: relative;
}
.wa-btn:hover { transform: scale(1.08); box-shadow: 0 12px 34px rgba(37,211,102,.55); }
.wa-btn svg { width: 30px; height: 30px; fill: #fff; }
.wa-btn::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid rgba(37,211,102,.5);
  animation: waPulse 2.4s ease-out infinite;
}
@keyframes waPulse {
  0% { transform: scale(1); opacity: .8; }
  100% { transform: scale(1.5); opacity: 0; }
}
.wa-tip {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 100px;
  padding: 8px 16px;
  font-size: .8rem;
  font-weight: 600;
  box-shadow: var(--shadow-md);
  white-space: nowrap;
  color: var(--ink);
}
/* ---------- Page hero (inner pages) ---------- */
.page-hero {
  background: var(--ink);
  color: #fff;
  padding: 72px 0 64px;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 55% 90% at 88% 20%, rgba(255,107,53,.18), transparent 62%),
    linear-gradient(rgba(255,255,255,.032) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.032) 1px, transparent 1px);
  background-size: auto, 56px 56px, 56px 56px;
}
.page-hero .wrap { position: relative; z-index: 2; }
.page-hero h1 { margin: 16px 0 18px; max-width: 900px; }
.page-hero p { color: #B8C5D6; font-size: 1.08rem; max-width: 700px; }
.breadcrumb {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: #7C8DA6;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.breadcrumb a { color: #8FA3BC; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: #4A5A72; }
/* ---------- Spec table ---------- */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .93rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.spec-table th, .spec-table td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}
.spec-table th {
  background: var(--paper-2);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}
.spec-table tbody tr:last-child td { border-bottom: none; }
.spec-table tbody tr:hover { background: var(--paper-2); }
.spec-table td:first-child { font-weight: 600; color: var(--ink); width: 38%; }
/* ---------- RFQ form ---------- */
.rfq-wrap {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow-md);
}
.rfq-aside {
  background: var(--ink);
  color: #fff;
  padding: 48px 40px;
  position: relative;
  overflow: hidden;
}
.rfq-aside::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 20% 90%, rgba(255,107,53,.22), transparent 65%);
}
.rfq-aside > * { position: relative; }
.rfq-aside h3 { margin-bottom: 14px; }
.rfq-aside p { color: #B8C5D6; font-size: .94rem; margin-bottom: 28px; }
.rfq-points { list-style: none; }
.rfq-points li {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  font-size: .9rem;
  color: #C9D5E4;
  align-items: flex-start;
}
.rfq-points .ic {
  width: 20px; height: 20px;
  border-radius: 50%;
  background: rgba(0,217,163,.16);
  color: var(--signal);
  display: grid;
  place-items: center;
  font-size: 11px;
  flex-shrink: 0;
  margin-top: 2px;
}
.rfq-form { padding: 44px 40px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { margin-bottom: 18px; }
.field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 7px;
  font-weight: 600;
}
.field label .req { color: var(--accent); }
.field input, .field select, .field textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: .94rem;
  color: var(--ink);
  background: #fff;
  transition: border-color .2s, box-shadow .2s;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(255,107,53,.13);
}
.field textarea { resize: vertical; min-height: 96px; }
.form-note { font-size: .78rem; color: var(--muted); margin-top: 14px; }
.form-msg {
  display: none;
  padding: 14px 16px;
  border-radius: var(--radius);
  font-size: .9rem;
  margin-top: 16px;
}
.form-msg.ok { display: block; background: rgba(0,217,163,.1); border: 1px solid rgba(0,217,163,.4); color: #00795B; }
/* ---------- FAQ ---------- */
.faq-list { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-q {
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  padding: 22px 0;
  font-family: var(--font-display);
  font-size: 1.16rem;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
}
.faq-q::after {
  content: '+';
  font-size: 1.5rem;
  color: var(--accent);
  font-weight: 400;
  transition: transform .25s;
  flex-shrink: 0;
}
.faq-item.open .faq-q::after { transform: rotate(45deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .32s ease;
}
.faq-a-inner { padding: 0 0 24px; font-size: .95rem; color: var(--ink-soft); max-width: 820px; }
/* ---------- Compare table ---------- */
.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .9rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.compare-table th, .compare-table td {
  padding: 15px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}
.compare-table thead th {
  background: var(--ink);
  color: #fff;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: .03em;
}
.compare-table thead th.hl { background: var(--accent); }
.compare-table td.hl { background: rgba(255,107,53,.05); font-weight: 600; }
.compare-table tbody tr:last-child td { border-bottom: none; }
/* ---------- Blog cards ---------- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 26px;
}
.blog-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
  transition: all .26s;
  display: flex;
  flex-direction: column;
}
.blog-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.blog-card-top {
  padding: 24px 24px 0;
  flex: 1;
}
.blog-meta {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.blog-card h3 { font-size: 1.24rem; line-height: 1.25; margin-bottom: 10px; }
.blog-card p { font-size: .89rem; color: var(--muted); }
.blog-card-foot { padding: 18px 24px 22px; }
/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .6s cubic-bezier(.4,0,.2,1), transform .6s cubic-bezier(.4,0,.2,1);
}
.reveal.in { opacity: 1; transform: none; }
/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { max-width: 420px; aspect-ratio: 1; }
  .proof { grid-template-columns: 1fr; }
  .rfq-wrap { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}
@media (max-width: 860px) {
  .nav-links {
    position: fixed;
    top: 76px; left: 0; right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 24px 24px;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-md);
    transform: translateY(-130%);
    transition: transform .3s cubic-bezier(.4,0,.2,1);
    max-height: calc(100vh - 76px);
    overflow-y: auto;
  }
  .nav-links.open { transform: none; }
  .nav-links li { border-bottom: 1px solid var(--paper-3); }
  .nav-links a { display: block; padding: 15px 0; font-size: 1rem; }
  .nav-links a::after { display: none; }
  .nav-cta { margin: 16px 0 0; }
  .nav-cta .btn { width: 100%; justify-content: center; }
  .nav-toggle { display: flex; }
  .section { padding: 64px 0; }
  .hero { padding: 72px 0 64px; }
  .hero-stats { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .rfq-form, .rfq-aside { padding: 32px 26px; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 560px) {
  .wrap { padding: 0 18px; }
  .footer-grid { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr; }
  .wa-tip { display: none; }
  .compare-table { font-size: .8rem; }
  .compare-table th, .compare-table td { padding: 11px 10px; }
}
/* ---------- Real imagery (added) ---------- */
.drone-graphic img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 10px;
}
.product-card-top img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 16px;
  background: var(--paper-3);
}
.proof-visual img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 28px;
  border: 1px solid rgba(255,255,255,.14);
}
@media (max-width: 560px) {
  .proof-visual img { aspect-ratio: 16 / 10; }
}

/* ---------- Product card pricing ---------- */
.product-price {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 0 14px;
  margin-bottom: 12px;
  border-top: 1px solid var(--paper-3);
}
.pp-range {
  font-family: var(--font-display);
  font-size: 1.24rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: .01em;
}
.pp-note {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
}
.spec-table td .price-hi { color: var(--accent); font-weight: 700; }

/* ---------- Action video blocks ---------- */
video {
  display: block;
  max-width: 100%;
}
.proof-visual video {
  margin-bottom: 28px;
  border: 1px solid rgba(255,255,255,.14);
}
@media (max-width: 560px) {
  video[style*="aspect-ratio"] { aspect-ratio: 9 / 16 !important; }
}

/* ---------- Video hub ---------- */
.video-filters {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 36px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
}
.vf-btn {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: 9px 16px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--steel);
  border-radius: 100px;
  cursor: pointer;
  transition: all .2s;
  font-weight: 600;
}
.vf-btn span { color: var(--muted); margin-left: 4px; }
.vf-btn:hover { border-color: var(--steel); color: var(--ink); }
.vf-btn.active {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
}
.vf-btn.active span { color: var(--accent); }
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 28px;
}
.video-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
  transition: all .26s;
  display: flex;
  flex-direction: column;
}
.video-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.video-card.is-hidden { display: none; }
.video-frame {
  background: #000;
  aspect-ratio: 9 / 16;
  overflow: hidden;
}
.video-frame video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.video-body { padding: 20px 22px 24px; flex: 1; display: flex; flex-direction: column; }
.video-cat {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 10px;
}
.video-body h3 { font-size: 1.16rem; line-height: 1.25; margin-bottom: 10px; }
.video-body p { font-size: .88rem; color: var(--muted); }
@media (max-width: 560px) {
  .video-grid { grid-template-columns: 1fr; }
  .video-frame { aspect-ratio: 9 / 16; }
}

/* ---------- Picture-in-Picture button ---------- */
.pip-wrap {
  position: relative;
  display: block;
  margin-bottom: 28px;
}
.pip-wrap video {
  margin-bottom: 0;
}
.pip-btn {
  position: absolute;
  right: 10px;
  bottom: 10px;
  z-index: 5;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255,255,255,.35);
  border-radius: 8px;
  background: rgba(0,0,0,.55);
  color: #fff;
  cursor: pointer;
  opacity: 0;
  transition: opacity .2s ease, background .2s ease;
}
.pip-wrap:hover .pip-btn,
.pip-btn:focus-visible {
  opacity: 1;
}
.pip-btn:hover {
  background: rgba(0,0,0,.8);
}

/* ---------- Douyin-style immersive player ---------- */
.dy-overlay {
  position: fixed; inset: 0; z-index: 9999;
  background: rgba(0,0,0,.94);
  display: none; align-items: center; justify-content: center;
}
.dy-overlay.open { display: flex; }
.dy-stage { position: relative; height: 100%; display: flex; align-items: center; justify-content: center; }
.dy-stage video {
  height: 100%; width: auto; max-width: 100vw;
  aspect-ratio: 9 / 16; background: #000; border-radius: 12px;
  object-fit: contain;
}
.dy-info {
  position: absolute; left: 20px; bottom: 24px; max-width: 70%;
  color: #fff; text-shadow: 0 1px 4px rgba(0,0,0,.8);
  pointer-events: none;
}
.dy-info .dy-cat {
  display: inline-block; font-size: .8rem; letter-spacing: .08em;
  text-transform: uppercase; color: var(--accent, #ff5a3c); margin-bottom: 8px;
}
.dy-info h3 { font-size: 1.3rem; margin: 0 0 8px; line-height: 1.3; }
.dy-info p { font-size: .95rem; margin: 0; opacity: .85; line-height: 1.5; }
.dy-nav {
  position: fixed; right: 28px; top: 50%; transform: translateY(-50%);
  display: flex; flex-direction: column; gap: 14px; z-index: 10000;
}
.dy-btn {
  width: 52px; height: 52px; border-radius: 50%;
  border: 1px solid rgba(255,255,255,.35); background: rgba(255,255,255,.12);
  color: #fff; font-size: 1.4rem; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background .2s ease;
}
.dy-btn:hover { background: rgba(255,255,255,.28); }
.dy-close {
  position: fixed; top: 20px; right: 24px; z-index: 10001;
  width: 44px; height: 44px; border-radius: 50%;
  border: 1px solid rgba(255,255,255,.35); background: rgba(0,0,0,.5);
  color: #fff; font-size: 1.1rem; cursor: pointer;
}
.dy-close:hover { background: rgba(255,255,255,.2); }
.dy-counter {
  position: fixed; top: 28px; left: 28px; z-index: 10000;
  color: rgba(255,255,255,.85); font-size: .95rem;
  font-family: var(--font-mono, monospace);
  background: rgba(0,0,0,.4); padding: 6px 12px; border-radius: 20px;
}
@media (max-width: 640px) {
  .dy-nav { right: 10px; }
  .dy-btn { width: 44px; height: 44px; }
  .dy-info { max-width: 78%; }
}

/* ---------- Company gallery (brand + product line-up) ---------- */
.company-gallery {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 24px;
  align-items: stretch;
}
.company-figure {
  margin: 0;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.company-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
  background: #fff;
}
/* logo card: image area grows to fill, logo vertically centred */
.company-figure--logo {
  justify-content: space-between;
}
.company-figure--logo img {
  padding: 32px;
  margin: auto 0;
}
.company-figure--lineup img { padding: 12px; }
.company-figure figcaption {
  padding: 14px 18px 16px;
  font-size: .9rem;
  color: var(--muted);
  border-top: 1px solid var(--line);
  line-height: 1.5;
  margin-top: auto;
}
@media (max-width: 860px) {
  .company-gallery { grid-template-columns: 1fr; }
}