/* ============================================
   DKW 德康威尔 官网 - Design System
   ============================================ */

:root {
  /* Brand */
  --brand-900: #0A2547;
  --brand-800: #0E2A4F;
  --brand-700: #14365F;
  --brand-600: #1A4D8F;
  --brand-500: #2E6CC0;
  --brand-400: #4A90E2;
  --brand-300: #7BB3F0;
  --brand-200: #B8D6F7;
  --brand-100: #E5F0FB;
  --brand-50:  #F2F8FD;
  --accent:    #00A3FF;
  --gold:      #F0A22E;

  /* Neutrals */
  --ink-900: #0F172A;
  --ink-800: #1E293B;
  --ink-700: #334155;
  --ink-600: #475569;
  --ink-500: #64748B;
  --ink-400: #94A3B8;
  --ink-300: #CBD5E1;
  --ink-200: #E2E8F0;
  --ink-100: #F1F5F9;
  --ink-50:  #F8FAFC;
  --white:   #FFFFFF;

  /* Semantic */
  --success: #10B981;
  --warning: #F59E0B;
  --danger:  #EF4444;

  /* Layout */
  --container: 1280px;
  --radius-sm: 6px;
  --radius:    10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-sm: 0 1px 2px rgba(15,23,42,.05), 0 1px 1px rgba(15,23,42,.04);
  --shadow:    0 4px 14px rgba(15,23,42,.06), 0 2px 4px rgba(15,23,42,.04);
  --shadow-md: 0 10px 30px rgba(15,23,42,.08), 0 4px 8px rgba(15,23,42,.05);
  --shadow-lg: 0 24px 60px rgba(15,23,42,.12), 0 8px 16px rgba(15,23,42,.06);

  /* Type */
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
               "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC",
               "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Consolas, monospace;

  /* Motion */
  --ease: cubic-bezier(.2,.7,.2,1);
}

* { box-sizing: border-box; }
*::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  font-family: var(--font-sans);
  color: var(--ink-800);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
  font-size: 16px;
}

a { color: var(--brand-600); text-decoration: none; transition: color .2s var(--ease); }
a:hover { color: var(--brand-700); }

img, svg { display: block; max-width: 100%; height: auto; }

button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }

h1, h2, h3, h4, h5 { color: var(--ink-900); margin: 0 0 .5em; line-height: 1.25; font-weight: 700; }
h1 { font-size: clamp(2rem, 4vw, 3.25rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.6rem, 2.6vw, 2.25rem); letter-spacing: -0.01em; }
h3 { font-size: clamp(1.2rem, 1.8vw, 1.5rem); }
h4 { font-size: 1.1rem; }
p  { margin: 0 0 1em; }

/* ============================================
   Layout helpers
   ============================================ */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 80px 0; }
.section-sm { padding: 48px 0; }

.eyebrow {
  display: inline-block;
  color: var(--brand-600);
  font-weight: 600;
  font-size: .85rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.lead { font-size: 1.125rem; color: var(--ink-600); max-width: 720px; }

.text-center { text-align: center; }
.text-center .lead { margin: 0 auto; }

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center; justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: .95rem;
  letter-spacing: .01em;
  white-space: nowrap;
  transition: all .2s var(--ease);
  border: 1.5px solid transparent;
}
.btn-primary {
  background: var(--brand-600);
  color: var(--white);
}
.btn-primary:hover {
  background: var(--brand-700);
  color: var(--white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn-ghost {
  background: transparent;
  color: var(--brand-700);
  border-color: var(--brand-200);
}
.btn-ghost:hover {
  border-color: var(--brand-600);
  background: var(--brand-50);
  color: var(--brand-700);
}
.btn-white {
  background: var(--white);
  color: var(--brand-700);
}
.btn-white:hover {
  background: var(--brand-50);
  color: var(--brand-800);
  transform: translateY(-1px);
}
.btn-lg { padding: 14px 28px; font-size: 1rem; }
.btn-sm { padding: 8px 14px; font-size: .85rem; }

.icon-arrow {
  width: 16px; height: 16px;
  display: inline-block;
  background: currentColor;
  -webkit-mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path fill='none' stroke='black' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round' d='M5 12h14M13 5l7 7-7 7'/></svg>") no-repeat center;
  mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path fill='none' stroke='black' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round' d='M5 12h14M13 5l7 7-7 7'/></svg>") no-repeat center;
  transition: transform .2s var(--ease);
}
.btn:hover .icon-arrow { transform: translateX(3px); }

/* ============================================
   Header / Nav
   ============================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--ink-100);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}
.nav-logo { display: flex; align-items: center; gap: 10px; }
.nav-logo img { height: 44px; }
.nav-menu {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
  margin: 0; padding: 0;
}
.nav-menu a {
  display: block;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  color: var(--ink-700);
  font-weight: 500;
  font-size: .95rem;
  transition: all .2s var(--ease);
}
.nav-menu a:hover {
  color: var(--brand-700);
  background: var(--brand-50);
}
.nav-menu a.active { color: var(--brand-700); background: var(--brand-100); }
.nav-cta { display: flex; align-items: center; gap: 10px; }

.lang-switch {
  display: inline-flex;
  border: 1px solid var(--ink-200);
  border-radius: var(--radius-sm);
  padding: 2px;
  font-size: .85rem;
}
.lang-switch button {
  padding: 6px 10px;
  border-radius: 4px;
  color: var(--ink-600);
  font-weight: 500;
}
.lang-switch button.active {
  background: var(--brand-600);
  color: var(--white);
}

.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  border-radius: var(--radius-sm);
  align-items: center; justify-content: center;
  color: var(--ink-700);
}
.nav-toggle:hover { background: var(--ink-100); }

@media (max-width: 960px) {
  .nav-menu, .nav-cta .btn:not(.nav-toggle-wrap) { display: none; }
  .nav-toggle { display: flex; }
  .nav-menu.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--white);
    padding: 16px 24px;
    border-bottom: 1px solid var(--ink-100);
    box-shadow: var(--shadow-md);
    gap: 0;
  }
  .nav-menu.open a { padding: 12px 14px; }
}

/* ============================================
   Hero
   ============================================ */
.hero {
  position: relative;
  padding: 96px 0 80px;
  overflow: hidden;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(74,144,226,.18), transparent 60%),
    radial-gradient(900px 500px at 10% 110%, rgba(26,77,143,.12), transparent 60%),
    linear-gradient(180deg, #F8FAFC 0%, #FFFFFF 100%);
  border-bottom: 1px solid var(--ink-100);
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(26,77,143,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26,77,143,.05) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: radial-gradient(ellipse 60% 50% at 50% 50%, black 30%, transparent 80%);
  mask-image: radial-gradient(ellipse 60% 50% at 50% 50%, black 30%, transparent 80%);
  pointer-events: none;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
}
.hero h1 {
  font-size: clamp(2.25rem, 4.5vw, 3.6rem);
  background: linear-gradient(135deg, var(--brand-900) 0%, var(--brand-600) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero h1 .accent { color: var(--brand-500); }
.hero-tagline {
  font-size: 1.05rem;
  color: var(--ink-600);
  margin-bottom: 28px;
}
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
  padding-top: 28px;
  border-top: 1px solid var(--ink-200);
}
.hero-stat .num {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--brand-700);
  font-family: var(--font-mono);
  letter-spacing: -.02em;
}
.hero-stat .label {
  font-size: .85rem;
  color: var(--ink-500);
  letter-spacing: .03em;
}
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}
.hero-visual-card {
  position: relative;
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 28px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--ink-100);
  width: 100%;
  max-width: 540px;
}
.hero-visual-card::before {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: calc(var(--radius-xl) + 2px);
  background: linear-gradient(135deg, var(--brand-300), transparent 60%);
  z-index: -1;
  filter: blur(20px);
  opacity: .35;
}
.hero-visual img { border-radius: var(--radius); width: 100%; }
.hero-visual .pv-meta {
  margin-top: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.hero-visual .pv-meta .pill {
  font-family: var(--font-mono);
  font-size: .8rem;
  background: var(--brand-50);
  color: var(--brand-700);
  padding: 4px 10px;
  border-radius: 999px;
  font-weight: 600;
}
.hero-visual .pv-meta .title { font-weight: 600; color: var(--ink-800); }
.hero-visual .pv-meta .sub { font-size: .85rem; color: var(--ink-500); }

@media (max-width: 900px) {
  .hero { padding: 64px 0 56px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-stats { grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 32px; }
}

/* ============================================
   Cards / Common UI
   ============================================ */
.card {
  background: var(--white);
  border: 1px solid var(--ink-100);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: all .25s var(--ease);
}
.card-hover:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--brand-200);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .03em;
}
.badge-brand  { background: var(--brand-100); color: var(--brand-700); }
.badge-gold   { background: #FEF3C7; color: #B45309; }
.badge-green  { background: #DCFCE7; color: #166534; }
.badge-gray   { background: var(--ink-100); color: var(--ink-700); }

/* ============================================
   Section header
   ============================================ */
.sec-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 40px;
}
.sec-head h2 { margin: 0; }
.sec-head .lead { margin: 8px 0 0; }
.sec-head .actions { display: flex; gap: 10px; }

/* ============================================
   Featured Categories Grid (home)
   ============================================ */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
.cat-card {
  position: relative;
  background: var(--white);
  border: 1px solid var(--ink-100);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all .25s var(--ease);
  overflow: hidden;
}
.cat-card:hover {
  border-color: var(--brand-300);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.cat-card .icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: var(--brand-50);
  color: var(--brand-600);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
}
.cat-card .icon svg { width: 24px; height: 24px; }
.cat-card h3 { font-size: 1.15rem; margin-bottom: 6px; color: var(--ink-900); }
.cat-card p { color: var(--ink-600); font-size: .92rem; margin: 0 0 14px; }
.cat-card .cat-meta { display: flex; gap: 6px; flex-wrap: wrap; }
.cat-card .cat-arrow {
  position: absolute;
  right: 24px; bottom: 24px;
  color: var(--brand-600);
  opacity: .4;
  transition: all .2s var(--ease);
}
.cat-card:hover .cat-arrow { opacity: 1; transform: translate(3px, -3px); }

/* ============================================
   Featured Products (home)
   ============================================ */
.pgrid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

/* Product card */
.pcard {
  background: var(--white);
  border: 1px solid var(--ink-100);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all .25s var(--ease);
  display: flex;
  flex-direction: column;
  cursor: pointer;
}
.pcard:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--brand-200);
}
.pcard .ph {
  position: relative;
  aspect-ratio: 1 / 1;
  background: linear-gradient(135deg, var(--ink-50) 0%, #FAFCFF 100%);
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.pcard .ph img {
  width: 100%; height: 100%; object-fit: contain;
  padding: 12px;
  transition: transform .35s var(--ease);
}
.pcard:hover .ph img { transform: scale(1.05); }
.pcard .ph .series-tag {
  position: absolute;
  top: 12px; left: 12px;
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(4px);
  font-size: .72rem;
  font-weight: 600;
  color: var(--brand-700);
  padding: 4px 10px;
  border-radius: 999px;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.pcard .pb {
  padding: 18px 20px 20px;
  flex: 1;
  display: flex; flex-direction: column;
}
.pcard .ptitle {
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--ink-900);
  margin-bottom: 4px;
}
.pcard .psub {
  font-size: .82rem;
  color: var(--ink-500);
  margin-bottom: 12px;
  min-height: 1.2em;
}
.pcard .pspecs {
  display: flex; flex-wrap: wrap; gap: 8px 14px;
  font-size: .82rem;
  color: var(--ink-700);
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px dashed var(--ink-200);
}
.pcard .pspecs span {
  display: inline-flex; gap: 4px; align-items: baseline;
}
.pcard .pspecs span .k { color: var(--ink-500); font-size: .78rem; }
.pcard .pspecs span .v { font-family: var(--font-mono); font-weight: 600; color: var(--ink-800); }

/* ============================================
   Industries
   ============================================ */
.industry-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
}
.industry-pill {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  background: var(--white);
  border: 1px solid var(--ink-100);
  border-radius: var(--radius);
  transition: all .2s var(--ease);
  font-weight: 500;
  color: var(--ink-700);
}
.industry-pill:hover {
  border-color: var(--brand-300);
  background: var(--brand-50);
  color: var(--brand-700);
}
.industry-pill .dot {
  width: 8px; height: 8px;
  background: var(--brand-500);
  border-radius: 50%;
  flex-shrink: 0;
}

/* ============================================
   CTA banner
   ============================================ */
.cta-banner {
  background:
    radial-gradient(800px 400px at 20% 0%, rgba(74,144,226,.4), transparent 50%),
    linear-gradient(135deg, var(--brand-900), var(--brand-700));
  color: var(--white);
  border-radius: var(--radius-xl);
  padding: 56px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.cta-banner h2 { color: var(--white); margin: 0 0 8px; }
.cta-banner p { margin: 0; opacity: .85; max-width: 560px; }

/* ============================================
   Footer
   ============================================ */
.site-footer {
  background: var(--ink-900);
  color: var(--ink-300);
  padding: 56px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 36px;
}
.footer-grid h4 {
  color: var(--white);
  font-size: .95rem;
  margin: 0 0 16px;
  letter-spacing: .04em;
}
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin-bottom: 10px; font-size: .9rem; }
.footer-grid a { color: var(--ink-300); }
.footer-grid a:hover { color: var(--white); }
.footer-brand p { color: var(--ink-400); font-size: .9rem; max-width: 360px; }
.footer-brand img { height: 40px; margin-bottom: 14px; filter: brightness(0) invert(1); }
.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid #1E293B;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  color: var(--ink-400);
  font-size: .85rem;
}
@media (max-width: 760px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .cta-banner { padding: 36px 24px; }
}

/* ============================================
   Page header (sub pages)
   ============================================ */
.page-header {
  background:
    radial-gradient(900px 400px at 80% 50%, rgba(74,144,226,.18), transparent 60%),
    linear-gradient(180deg, #F8FAFC 0%, #FFFFFF 100%);
  padding: 72px 0 48px;
  border-bottom: 1px solid var(--ink-100);
}
.page-header .breadcrumb {
  font-size: .85rem;
  color: var(--ink-500);
  margin-bottom: 16px;
}
.page-header .breadcrumb a { color: var(--ink-500); }
.page-header .breadcrumb a:hover { color: var(--brand-700); }
.page-header h1 { margin: 0; }
.page-header .lead { margin: 12px 0 0; }

/* ============================================
   Products page (catalog)
   ============================================ */
.catalog {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 36px;
  align-items: start;
}
.filter-panel {
  position: sticky;
  top: 84px;
  background: var(--white);
  border: 1px solid var(--ink-100);
  border-radius: var(--radius-lg);
  padding: 20px;
  max-height: calc(100vh - 110px);
  overflow: auto;
}
.filter-group { margin-bottom: 20px; }
.filter-group h4 {
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--ink-500);
  margin-bottom: 10px;
}
.filter-opt {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: .92rem;
  color: var(--ink-700);
  transition: background .15s var(--ease);
}
.filter-opt:hover { background: var(--ink-50); }
.filter-opt input { accent-color: var(--brand-600); cursor: pointer; }
.filter-opt .count {
  margin-left: auto;
  font-size: .75rem;
  color: var(--ink-400);
  font-family: var(--font-mono);
}

.catalog-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.search-box {
  position: relative;
  flex: 1;
  max-width: 420px;
}
.search-box input {
  width: 100%;
  padding: 11px 16px 11px 40px;
  border: 1px solid var(--ink-200);
  border-radius: var(--radius);
  font: inherit;
  background: var(--white);
  transition: border-color .2s var(--ease);
}
.search-box input:focus {
  outline: none;
  border-color: var(--brand-500);
  box-shadow: 0 0 0 3px var(--brand-100);
}
.search-box svg {
  position: absolute; left: 12px; top: 50%;
  transform: translateY(-50%);
  width: 18px; height: 18px;
  color: var(--ink-400);
}
.toolbar-info {
  font-size: .88rem;
  color: var(--ink-500);
  font-family: var(--font-mono);
}

.results-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  color: var(--ink-500);
  border: 2px dashed var(--ink-200);
  border-radius: var(--radius-lg);
}
.results-empty svg { width: 48px; height: 48px; margin-bottom: 12px; color: var(--ink-300); }

@media (max-width: 960px) {
  .catalog { grid-template-columns: 1fr; }
  .filter-panel { position: static; max-height: none; }
}

/* ============================================
   Product detail (modal)
   ============================================ */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(15,23,42,.55);
  backdrop-filter: blur(6px);
  display: none;
  align-items: center; justify-content: center;
  z-index: 200;
  padding: 20px;
}
.modal-backdrop.open { display: flex; animation: fade .2s var(--ease); }
@keyframes fade { from {opacity: 0;} to {opacity: 1;} }
.modal {
  background: var(--white);
  border-radius: var(--radius-lg);
  max-width: 1100px;
  width: 100%;
  max-height: 90vh;
  overflow: auto;
  position: relative;
  animation: slideUp .25s var(--ease);
}
@keyframes slideUp { from {transform: translateY(20px); opacity: 0;} to {transform: none; opacity: 1;} }
.modal-close {
  position: absolute; top: 14px; right: 14px;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--ink-100);
  color: var(--ink-700);
  display: flex; align-items: center; justify-content: center;
  z-index: 2;
  transition: all .2s var(--ease);
}
.modal-close:hover { background: var(--ink-200); transform: rotate(90deg); }

.pd-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 32px;
  padding: 40px;
}
.pd-image {
  background: linear-gradient(135deg, var(--ink-50), #FAFCFF);
  border-radius: var(--radius);
  padding: 24px;
  display: flex; align-items: center; justify-content: center;
}
.pd-image img { width: 100%; height: auto; max-height: 480px; object-fit: contain; }
.pd-body { display: flex; flex-direction: column; }
.pd-cat {
  font-size: .8rem; color: var(--brand-600);
  text-transform: uppercase;
  letter-spacing: .12em;
  font-weight: 600;
  margin-bottom: 6px;
}
.pd-title { font-size: 1.8rem; margin-bottom: 4px; }
.pd-subtitle { color: var(--ink-500); margin-bottom: 18px; font-size: .95rem; }
.pd-desc { color: var(--ink-700); font-size: .95rem; line-height: 1.65; margin-bottom: 20px; }
.pd-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 22px; }

.pd-specs {
  background: var(--ink-50);
  border: 1px solid var(--ink-100);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
}
.pd-specs h4 {
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--ink-500);
  margin-bottom: 12px;
}
.pd-specs table { width: 100%; border-collapse: collapse; font-size: .9rem; }
.pd-specs th, .pd-specs td { padding: 7px 0; text-align: left; }
.pd-specs th { color: var(--ink-500); font-weight: 500; width: 50%; }
.pd-specs td { color: var(--ink-800); font-family: var(--font-mono); font-weight: 500; }

.pd-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: auto; }

@media (max-width: 760px) {
  .pd-grid { grid-template-columns: 1fr; padding: 24px; gap: 20px; }
  .pd-title { font-size: 1.4rem; }
}

/* ============================================
   About page
   ============================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.about-grid .about-img {
  background: linear-gradient(135deg, var(--brand-50), #FAFCFF);
  border-radius: var(--radius-lg);
  padding: 24px;
  border: 1px solid var(--ink-100);
}
.about-grid img { border-radius: var(--radius); width: 100%; }
.about-points {
  list-style: none;
  padding: 0; margin: 24px 0 0;
  display: grid; gap: 14px;
}
.about-points li {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 14px 16px;
  border-radius: var(--radius);
  background: var(--ink-50);
  border: 1px solid var(--ink-100);
}
.about-points li .ic {
  width: 36px; height: 36px;
  border-radius: 8px;
  background: var(--brand-100);
  color: var(--brand-700);
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
}
.about-points li strong { display: block; color: var(--ink-900); margin-bottom: 2px; }
.about-points li span { color: var(--ink-600); font-size: .9rem; }

.location-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
.location-card {
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--ink-100);
  border-radius: var(--radius-lg);
  transition: all .25s var(--ease);
}
.location-card:hover {
  border-color: var(--brand-200);
  box-shadow: var(--shadow);
}
.location-card .pin {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: .75rem; font-weight: 700;
  color: var(--brand-700);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 12px;
}
.location-card h3 { font-size: 1.1rem; margin-bottom: 6px; }
.location-card .addr { color: var(--ink-600); font-size: .9rem; line-height: 1.6; margin-bottom: 12px; }
.location-card .contact-line { color: var(--ink-700); font-size: .88rem; }
.location-card .contact-line strong { color: var(--ink-500); font-weight: 500; margin-right: 6px; }

@media (max-width: 760px) {
  .about-grid { grid-template-columns: 1fr; gap: 32px; }
}

/* ============================================
   Applications page
   ============================================ */
.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.app-card {
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--ink-100);
  border-radius: var(--radius-lg);
  transition: all .25s var(--ease);
}
.app-card:hover {
  border-color: var(--brand-200);
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}
.app-card .ic {
  width: 52px; height: 52px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--brand-50), var(--brand-100));
  color: var(--brand-700);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 14px;
}
.app-card h3 { font-size: 1.1rem; margin-bottom: 6px; }
.app-card p { color: var(--ink-600); font-size: .9rem; margin: 0; }

/* ============================================
   Support page
   ============================================ */
.dl-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.dl-card {
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--ink-100);
  border-radius: var(--radius-lg);
  display: flex;
  gap: 16px;
  align-items: flex-start;
  transition: all .2s var(--ease);
}
.dl-card:hover { border-color: var(--brand-200); box-shadow: var(--shadow); }
.dl-card .icon {
  width: 48px; height: 48px;
  background: var(--brand-50);
  color: var(--brand-600);
  border-radius: 12px;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
}
.dl-card h3 { font-size: 1rem; margin-bottom: 4px; }
.dl-card p { color: var(--ink-600); font-size: .85rem; margin: 0 0 10px; }
.dl-card .file { font-family: var(--font-mono); font-size: .78rem; color: var(--ink-500); }

.faq-list {
  display: grid;
  gap: 12px;
  max-width: 820px;
}
.faq-item {
  border: 1px solid var(--ink-100);
  border-radius: var(--radius);
  background: var(--white);
  overflow: hidden;
}
.faq-item summary {
  padding: 16px 20px;
  font-weight: 600;
  color: var(--ink-800);
  cursor: pointer;
  list-style: none;
  display: flex; justify-content: space-between; align-items: center;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 1.5rem;
  color: var(--brand-500);
  transition: transform .2s var(--ease);
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item .answer {
  padding: 0 20px 18px;
  color: var(--ink-600);
  font-size: .92rem;
  line-height: 1.7;
}

/* ============================================
   Contact page
   ============================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
}
.contact-info-card { padding: 32px; background: var(--white); border: 1px solid var(--ink-100); border-radius: var(--radius-lg); }
.contact-info-card h3 { margin-bottom: 14px; }
.contact-info-card .row { display: flex; gap: 14px; padding: 12px 0; border-bottom: 1px dashed var(--ink-100); }
.contact-info-card .row:last-child { border-bottom: 0; }
.contact-info-card .row .ic {
  width: 36px; height: 36px;
  border-radius: 8px;
  background: var(--brand-50);
  color: var(--brand-600);
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
}
.contact-info-card .row .lbl { font-size: .8rem; color: var(--ink-500); text-transform: uppercase; letter-spacing: .08em; }
.contact-info-card .row .val { color: var(--ink-800); font-weight: 500; }

.contact-form { padding: 32px; background: var(--white); border: 1px solid var(--ink-100); border-radius: var(--radius-lg); }
.field { margin-bottom: 14px; }
.field label { display: block; font-size: .85rem; font-weight: 500; color: var(--ink-700); margin-bottom: 6px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 10px 14px;
  border: 1px solid var(--ink-200);
  border-radius: var(--radius-sm);
  font: inherit;
  transition: border-color .2s var(--ease);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--brand-500);
  box-shadow: 0 0 0 3px var(--brand-100);
}
.field textarea { resize: vertical; min-height: 100px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 760px) {
  .contact-grid { grid-template-columns: 1fr; }
  .field-row { grid-template-columns: 1fr; }
}

/* ============================================
   Utilities
   ============================================ */
.muted { color: var(--ink-500); }
.mono { font-family: var(--font-mono); }
.divider { height: 1px; background: var(--ink-100); margin: 32px 0; }
.no-bullets { list-style: none; padding: 0; margin: 0; }

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}