/* ═══════════════════════════════════════════════════════
   HOYAN 泓洋電子科技  —  Global Design System
   Modern Industrial Tech Theme · 2026
═══════════════════════════════════════════════════════ */

/* ── RESET & BOX-MODEL ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── CSS CUSTOM PROPERTIES ── */
:root {
  --bg-primary:    #04080f;
  --bg-secondary:  #080d1a;
  --bg-card:       rgba(255,255,255,0.04);
  --bg-card-hover: rgba(0,212,255,0.06);
  --accent:        #00d4ff;
  --accent2:       #0077ff;
  --accent3:       #7c3aed;
  --text-primary:  #f0f6ff;
  --text-secondary:#8ba4c0;
  --text-muted:    #4a6480;
  --border:        rgba(0,212,255,0.15);
  --border-solid:  rgba(0,212,255,0.3);
  --glow:          0 0 30px rgba(0,212,255,0.3);
  --glow-strong:   0 0 60px rgba(0,212,255,0.4);
  --radius:        16px;
  --radius-sm:     10px;
  --radius-lg:     24px;
  --font-body:     'Noto Sans TC', 'Inter', sans-serif;
  --nav-height:    72px;
  --transition:    0.3s cubic-bezier(0.4,0,0.2,1);
}

/* ── BASE ── */
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--accent2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ── SELECTION ── */
::selection { background: rgba(0,212,255,0.25); color: var(--text-primary); }

/* ══════════════════════
   NAVBAR
══════════════════════ */
#navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 0 5%;
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  background: rgba(4,8,15,0.85);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition), box-shadow var(--transition);
}
#navbar.scrolled {
  background: rgba(4,8,15,0.97);
  box-shadow: 0 4px 30px rgba(0,0,0,0.5);
}
.nav-inner {
  max-width: 1280px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: var(--nav-height);
}
.nav-logo { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.nav-logo img { height: 38px; filter: brightness(1.15); }
.nav-logo-text { font-size: 1.1rem; font-weight: 700; color: var(--text-primary); letter-spacing: 0.5px; }
.nav-logo-text span { color: var(--accent); }
.nav-links { display: flex; align-items: center; gap: 4px; list-style: none; }
.nav-links a {
  color: var(--text-secondary); text-decoration: none;
  font-size: 0.9rem; font-weight: 500; padding: 8px 14px;
  border-radius: 8px; transition: color 0.2s, background 0.2s;
  white-space: nowrap;
}
.nav-links a:hover, .nav-links a.active { color: var(--accent); background: rgba(0,212,255,0.08); }
.nav-right { display: flex; align-items: center; gap: 10px; }
.lang-btn {
  display: flex; align-items: center; gap: 6px;
  color: var(--text-secondary); font-size: 0.82rem;
  background: var(--bg-card); border: 1px solid var(--border);
  padding: 6px 14px; border-radius: 20px; cursor: pointer;
  text-decoration: none; transition: all 0.2s; font-weight: 500;
}
.lang-btn:hover { color: var(--accent); border-color: var(--accent); }
.btn-inquiry {
  display: inline-flex; align-items: center; gap: 6px;
  background: linear-gradient(135deg, var(--accent2), var(--accent));
  color: #fff; font-size: 0.82rem; font-weight: 700;
  padding: 8px 18px; border-radius: 20px; text-decoration: none;
  transition: all 0.3s; box-shadow: 0 4px 15px rgba(0,119,255,0.3);
  white-space: nowrap;
}
.btn-inquiry:hover { transform: translateY(-2px); box-shadow: 0 6px 25px rgba(0,212,255,0.5); }

/* Hamburger */
.nav-hamburger {
  display: none; flex-direction: column; gap: 5px;
  cursor: pointer; padding: 6px; background: none; border: none;
}
.nav-hamburger span {
  width: 24px; height: 2px; background: var(--text-primary);
  border-radius: 2px; transition: all 0.3s; display: block;
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile Menu */
#mobileMenu {
  display: none; position: fixed;
  top: var(--nav-height); left: 0; right: 0;
  background: rgba(4,8,15,0.98);
  border-bottom: 1px solid var(--border);
  z-index: 999; padding: 20px 5% 30px;
  backdrop-filter: blur(20px);
  transform: translateY(-10px); opacity: 0;
  transition: all 0.3s;
}
#mobileMenu.open { display: block; transform: translateY(0); opacity: 1; }
.mobile-links { list-style: none; }
.mobile-links li { border-bottom: 1px solid rgba(255,255,255,0.05); }
.mobile-links a {
  display: block; padding: 14px 0;
  color: var(--text-secondary); text-decoration: none;
  font-size: 1rem; font-weight: 500; transition: color 0.2s;
}
.mobile-links a:hover { color: var(--accent); }
.mobile-actions { display: flex; gap: 12px; margin-top: 20px; flex-wrap: wrap; }

/* ══════════════════════
   PAGE HERO (inner pages)
══════════════════════ */
.page-hero {
  padding: calc(var(--nav-height) + 60px) 5% 70px;
  position: relative; overflow: hidden;
  background: var(--bg-primary);
}
.page-hero-bg {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 70% 60% at 50% 100%, rgba(0,119,255,0.12) 0%, transparent 70%),
              var(--bg-primary);
}
.page-hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(0,212,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}
.page-hero-inner { position: relative; z-index: 1; max-width: 1280px; margin: 0 auto; }
.page-hero h1 { font-size: clamp(2rem,4vw,3rem); font-weight: 800; margin-bottom: 12px; }
.breadcrumb {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.875rem; color: var(--text-muted);
}
.breadcrumb a { color: var(--text-secondary); text-decoration: none; transition: color 0.2s; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { color: var(--text-muted); }
.breadcrumb .sep { color: var(--text-muted); }

/* ══════════════════════
   SECTION BASE
══════════════════════ */
section { padding: 100px 5%; }
.container { max-width: 1280px; margin: 0 auto; }
.section-tag {
  display: inline-block; font-size: 0.72rem; font-weight: 700;
  letter-spacing: 2.5px; text-transform: uppercase; color: var(--accent);
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(1.8rem,3vw,2.6rem); font-weight: 800;
  line-height: 1.25; margin-bottom: 16px;
}
.section-desc {
  font-size: 1rem; color: var(--text-secondary);
  max-width: 560px; line-height: 1.8; margin-bottom: 60px;
}
.gradient-text {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

/* ══════════════════════
   BUTTONS
══════════════════════ */
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  background: linear-gradient(135deg, var(--accent2), var(--accent));
  color: #fff; font-weight: 700; font-size: 0.95rem;
  padding: 13px 28px; border-radius: 12px; text-decoration: none;
  transition: all 0.3s; box-shadow: 0 8px 30px rgba(0,119,255,0.35);
  border: none; cursor: pointer; font-family: var(--font-body);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(0,212,255,0.5); }

.btn-outline {
  display: inline-flex; align-items: center; gap: 8px;
  background: transparent; color: var(--text-primary);
  border: 1px solid var(--border-solid); font-weight: 500; font-size: 0.95rem;
  padding: 13px 28px; border-radius: 12px; text-decoration: none;
  transition: all 0.3s; cursor: pointer; font-family: var(--font-body);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); background: rgba(0,212,255,0.06); }

.btn-ghost {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--accent); font-size: 0.875rem; font-weight: 600;
  text-decoration: none; transition: gap 0.2s, opacity 0.2s;
}
.btn-ghost:hover { gap: 12px; opacity: 0.85; }

/* ══════════════════════
   CARDS
══════════════════════ */
.card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); transition: all var(--transition);
}
.card:hover {
  border-color: var(--border-solid);
  box-shadow: 0 16px 50px rgba(0,212,255,0.1);
  transform: translateY(-4px);
}
.card-accent-top { position: relative; overflow: hidden; }
.card-accent-top::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--accent2), var(--accent));
}

/* ══════════════════════
   MARQUEE TECH BAR
══════════════════════ */
.tech-bar {
  background: rgba(0,212,255,0.04);
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  padding: 16px 0; overflow: hidden;
}
.marquee-track {
  display: flex; gap: 60px; width: max-content;
  animation: marquee 35s linear infinite;
}
.marquee-track:hover { animation-play-state: paused; }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }
.marquee-item {
  display: flex; align-items: center; gap: 10px;
  font-size: 0.82rem; color: var(--text-secondary); white-space: nowrap; font-weight: 500;
}
.marquee-item i { color: var(--accent); font-size: 0.9rem; }

/* ══════════════════════
   PRODUCT CARDS
══════════════════════ */
.products-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); gap: 22px;
}
.product-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
  transition: all 0.4s cubic-bezier(0.175,0.885,0.32,1.275);
  cursor: pointer;
}
.product-card:hover {
  border-color: var(--accent); transform: translateY(-8px);
  box-shadow: 0 20px 60px rgba(0,212,255,0.15), var(--glow);
  background: var(--bg-card-hover);
}
.product-img {
  aspect-ratio: 4/3; overflow: hidden;
  background: linear-gradient(135deg, #0a1628, #0d1f3c);
  display: flex; align-items: center; justify-content: center;
}
.product-img img { width:100%; height:100%; object-fit:cover; transition: transform 0.5s; }
.product-card:hover .product-img img { transform: scale(1.06); }
.product-img-icon {
  display: flex; flex-direction: column; align-items: center; gap: 10px; padding: 30px;
  width: 100%; height: 220px;
  justify-content: center;
}
.product-body { padding: 22px; }
.product-tag {
  font-size: 0.68rem; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase;
  color: var(--accent); background: rgba(0,212,255,0.1);
  padding: 3px 10px; border-radius: 20px; display: inline-block; margin-bottom: 10px;
}
.product-name { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
.product-desc { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.7; margin-bottom: 14px; }
.spec-table { width: 100%; border-collapse: collapse; margin: 10px 0 14px; }
.spec-table tr { border-bottom: 1px solid var(--border); }
.spec-table tr:last-child { border-bottom: none; }
.spec-table td { padding: 5px 0; font-size: 0.77rem; vertical-align: top; }
.spec-table td:first-child { color: var(--text-muted); width: 44%; font-weight: 500; }
.spec-table td:last-child { color: var(--text-primary); font-weight: 600; }
.feature-tags { display: flex; flex-wrap: wrap; gap: 7px; }
.feature-tag {
  font-size: 0.7rem; font-weight: 600; padding: 4px 11px; border-radius: 20px;
  background: rgba(0,212,255,0.08); border: 1px solid rgba(0,212,255,0.2); color: var(--accent);
}

/* ══════════════════════
   SOLUTIONS
══════════════════════ */
.solutions-grid {
  display: grid; grid-template-columns: repeat(3,1fr); gap: 22px;
}
.solution-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 18px; padding: 28px; transition: all var(--transition);
  position: relative; overflow: hidden;
}
.solution-card:hover {
  border-color: var(--accent); transform: translateY(-6px);
  box-shadow: 0 20px 50px rgba(0,212,255,0.12);
}
.solution-industry {
  font-size: 0.68rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 1.5px; color: var(--accent); margin-bottom: 10px;
}
.solution-icon { font-size: 2.4rem; margin-bottom: 14px; display: block; }
.solution-title { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.solution-desc { font-size: 0.83rem; color: var(--text-secondary); line-height: 1.7; }
.solution-products { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 6px; }
.solution-product-tag {
  font-size: 0.68rem; padding: 3px 9px; border-radius: 20px;
  background: rgba(0,119,255,0.1); border: 1px solid rgba(0,119,255,0.25); color: var(--accent2);
  font-weight: 600;
}

/* ══════════════════════
   NEWS
══════════════════════ */
.news-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; }
.news-list { display: flex; flex-direction: column; }
.news-item {
  display: flex; gap: 18px; align-items: flex-start;
  padding: 22px 0; border-bottom: 1px solid var(--border);
  transition: padding-left 0.2s;
}
.news-item:first-child { padding-top: 0; }
.news-item:hover { padding-left: 6px; }
.news-date-box {
  flex-shrink: 0; width: 54px; height: 60px;
  background: rgba(0,212,255,0.08); border: 1px solid var(--border);
  border-radius: 12px; display: flex; flex-direction: column;
  align-items: center; justify-content: center;
}
.news-date-day { font-size: 1.25rem; font-weight: 800; color: var(--accent); line-height: 1; }
.news-date-month { font-size: 0.63rem; color: var(--text-muted); text-transform: uppercase; margin-top: 2px; }
.news-body { flex: 1; }
.news-tag {
  font-size: 0.68rem; font-weight: 700; text-transform: uppercase;
  color: var(--accent); letter-spacing: 1px; margin-bottom: 5px;
}
.news-title {
  font-size: 0.92rem; font-weight: 600; line-height: 1.5;
  color: var(--text-primary); text-decoration: none; display: block;
  transition: color 0.2s;
}
.news-title:hover { color: var(--accent); }

/* ══════════════════════
   CONTACT FORM
══════════════════════ */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; }
.contact-info-cards { display: flex; flex-direction: column; gap: 14px; margin-top: 36px; }
.contact-card {
  display: flex; gap: 14px; align-items: center;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 14px; padding: 18px; transition: all var(--transition);
}
.contact-card:hover { border-color: var(--accent); background: var(--bg-card-hover); }
.contact-icon {
  width: 46px; height: 46px; flex-shrink: 0;
  background: rgba(0,212,255,0.1); border: 1px solid rgba(0,212,255,0.3);
  border-radius: 12px; display: flex; align-items: center; justify-content: center;
  font-size: 1rem; color: var(--accent);
}
.contact-label { font-size: 0.72rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }
.contact-value { font-size: 0.92rem; font-weight: 600; color: var(--text-primary); margin-top: 2px; }
.contact-form-wrap {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 20px; padding: 38px;
}
.contact-form-wrap h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 22px; }
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block; font-size: 0.78rem; color: var(--text-secondary);
  font-weight: 600; margin-bottom: 7px; letter-spacing: 0.5px;
}
.form-group input, .form-group textarea, .form-group select {
  width: 100%; background: rgba(255,255,255,0.04);
  border: 1px solid var(--border); color: var(--text-primary);
  border-radius: var(--radius-sm); padding: 11px 15px; font-size: 0.88rem;
  font-family: var(--font-body); outline: none; transition: border-color 0.2s, background 0.2s;
  -webkit-appearance: none; appearance: none;
}
.form-group select { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238ba4c0' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; padding-right: 38px; }
.form-group select option { background: #0d1f3c; color: var(--text-primary); }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  border-color: var(--accent); background: rgba(0,212,255,0.05);
}
.form-group textarea { resize: vertical; min-height: 110px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.btn-submit {
  width: 100%; background: linear-gradient(135deg, var(--accent2), var(--accent));
  color: #fff; font-weight: 700; font-size: 0.95rem;
  padding: 13px; border-radius: 12px; border: none;
  cursor: pointer; font-family: var(--font-body);
  transition: all 0.3s; box-shadow: 0 8px 30px rgba(0,119,255,0.3);
  display: flex; align-items: center; justify-content: center; gap: 8px;
}
.btn-submit:hover { transform: translateY(-2px); box-shadow: 0 12px 40px rgba(0,212,255,0.4); }
.btn-submit:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

/* ══════════════════════
   PARTNERS
══════════════════════ */
.partners-section { padding: 60px 5%; background: var(--bg-primary); }
.partners-label {
  text-align: center; font-size: 0.75rem; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 2px; margin-bottom: 30px;
}
.partners-logos { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; align-items: center; }
.partner-logo {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 12px; padding: 12px 24px;
  font-size: 0.88rem; font-weight: 700; color: var(--text-muted);
  transition: all 0.3s; text-decoration: none; display: block;
}
.partner-logo:hover { color: var(--accent); border-color: var(--accent); background: rgba(0,212,255,0.05); }

/* ══════════════════════
   FOOTER
══════════════════════ */
footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 70px 5% 30px;
}
.footer-inner { max-width: 1280px; margin: 0 auto; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 60px; margin-bottom: 56px; }
.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.footer-logo img { height: 34px; }
.footer-logo-text { font-size: 0.95rem; font-weight: 700; }
.footer-logo-text span { color: var(--accent); }
.footer-brand-desc { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.8; max-width: 300px; }
.footer-col-title { font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 1.5px; color: var(--text-primary); margin-bottom: 18px; }
.footer-links { list-style: none; display: flex; flex-direction: column; gap: 9px; }
.footer-links a { color: var(--text-secondary); text-decoration: none; font-size: 0.875rem; transition: color 0.2s; }
.footer-links a:hover { color: var(--accent); }
.footer-contact-item { display: flex; gap: 10px; margin-bottom: 11px; }
.footer-contact-item i { color: var(--accent); width: 14px; margin-top: 3px; flex-shrink: 0; }
.footer-contact-item p { font-size: 0.83rem; color: var(--text-secondary); line-height: 1.6; }
.footer-bottom {
  border-top: 1px solid var(--border); padding-top: 28px;
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px;
}
.footer-copy { font-size: 0.78rem; color: var(--text-muted); }
.footer-copy span { color: var(--accent); }
.footer-links-bottom { display: flex; gap: 18px; }
.footer-links-bottom a { font-size: 0.78rem; color: var(--text-muted); text-decoration: none; transition: color 0.2s; }
.footer-links-bottom a:hover { color: var(--accent); }

/* ══════════════════════
   SCROLL TO TOP
══════════════════════ */
#scrollTop {
  position: fixed; bottom: 30px; right: 30px; z-index: 999;
  width: 44px; height: 44px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent2), var(--accent));
  color: #fff; font-size: 1rem; border: none; cursor: pointer;
  box-shadow: 0 4px 20px rgba(0,119,255,0.4);
  display: none; align-items: center; justify-content: center;
  transition: all 0.3s;
}
#scrollTop:hover { transform: translateY(-3px); box-shadow: 0 8px 30px rgba(0,212,255,0.5); }
#scrollTop.show { display: flex; }

/* ══════════════════════
   FADE-IN ANIMATIONS
══════════════════════ */
.fade-in {
  opacity: 0; transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }
.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }
.fade-in-delay-5 { transition-delay: 0.5s; }

/* ══════════════════════
   TOAST NOTIFICATION
══════════════════════ */
#toast {
  position: fixed; bottom: 90px; right: 30px; z-index: 9999;
  background: rgba(0,212,255,0.12); border: 1px solid var(--border-solid);
  backdrop-filter: blur(12px); padding: 14px 20px; border-radius: 12px;
  color: var(--text-primary); font-size: 0.875rem; font-weight: 500;
  transform: translateX(120%); transition: transform 0.4s ease;
  max-width: 300px; display: flex; align-items: center; gap: 10px;
}
#toast.show { transform: translateX(0); }
#toast.success i { color: #22c55e; }
#toast.error i   { color: #ef4444; }

/* ══════════════════════
   ABOUT SECTION
══════════════════════ */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.about-image-wrap {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 30px 80px rgba(0,0,0,0.4);
}
.about-image-wrap img { width: 100%; display: block; }
.about-image-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(4,8,15,0.75) 0%, transparent 55%);
}
.about-stats-grid {
  position: absolute; bottom: 24px; left: 20px; right: 20px;
  display: grid; grid-template-columns: repeat(4,1fr); gap: 10px;
}
.mini-stat {
  background: rgba(4,8,15,0.75); backdrop-filter: blur(10px);
  border: 1px solid var(--border); border-radius: 12px; padding: 12px 8px;
  text-align: center;
}
.mini-stat-num { font-size: 1.3rem; font-weight: 800; color: var(--accent); }
.mini-stat-label { font-size: 0.68rem; color: var(--text-secondary); margin-top: 2px; }
.about-features { display: flex; flex-direction: column; gap: 16px; margin-top: 36px; }
.about-feature {
  display: flex; gap: 14px; align-items: flex-start;
  padding: 18px; background: var(--bg-card);
  border: 1px solid var(--border); border-radius: 14px;
  transition: all var(--transition);
}
.about-feature:hover { border-color: var(--accent); background: var(--bg-card-hover); }
.about-feature-icon {
  width: 42px; height: 42px; flex-shrink: 0;
  background: linear-gradient(135deg, var(--accent2), var(--accent));
  border-radius: 10px; display: flex; align-items: center; justify-content: center;
  font-size: 1rem; color: #fff;
}
.about-feature-title { font-weight: 700; font-size: 0.95rem; margin-bottom: 3px; }
.about-feature-desc { font-size: 0.845rem; color: var(--text-secondary); line-height: 1.6; }

/* ══════════════════════
   DOWNLOAD / SUPPORT
══════════════════════ */
.download-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px,1fr)); gap: 20px; }
.download-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px;
  display: flex; gap: 16px; align-items: flex-start;
  transition: all var(--transition);
}
.download-card:hover { border-color: var(--accent); background: var(--bg-card-hover); transform: translateY(-4px); }
.download-icon {
  width: 50px; height: 50px; flex-shrink: 0;
  background: rgba(0,212,255,0.1); border: 1px solid rgba(0,212,255,0.25);
  border-radius: 12px; display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; color: var(--accent);
}
.download-name { font-size: 0.95rem; font-weight: 700; margin-bottom: 4px; }
.download-meta { font-size: 0.78rem; color: var(--text-muted); margin-bottom: 12px; }
.download-btn {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.8rem; font-weight: 700; color: var(--accent);
  text-decoration: none; border: 1px solid var(--border-solid);
  padding: 6px 14px; border-radius: 8px; transition: all 0.2s;
}
.download-btn:hover { background: rgba(0,212,255,0.08); }

/* ══════════════════════
   RESPONSIVE — TABLET ≤1024px
══════════════════════ */
@media (max-width: 1024px) {
  :root { --nav-height: 64px; }
  section { padding: 80px 5%; }
  .solutions-grid { grid-template-columns: 1fr 1fr; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .news-layout { grid-template-columns: 1fr; gap: 48px; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .products-grid { grid-template-columns: repeat(2,1fr); }
  .about-stats-grid { grid-template-columns: repeat(2,1fr); }
}

/* ══════════════════════
   RESPONSIVE — MOBILE ≤768px
══════════════════════ */
@media (max-width: 768px) {
  :root { --nav-height: 60px; }
  #navbar { padding: 0 4%; }
  section { padding: 60px 4%; }
  .section-title { font-size: 1.7rem; }
  .section-desc { font-size: 0.9rem; margin-bottom: 36px; }
  .nav-links, .nav-right { display: none; }
  .nav-hamburger { display: flex; }
  .products-grid { grid-template-columns: 1fr; gap: 14px; }
  .solutions-grid { grid-template-columns: 1fr; gap: 12px; }
  .solution-card { padding: 20px; }
  .about-stats-grid { grid-template-columns: repeat(2,1fr); gap: 8px; }
  .about-features { gap: 10px; margin-top: 20px; }
  .about-feature { padding: 14px; }
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .contact-form-wrap { padding: 22px 16px; }
  .form-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; margin-bottom: 30px; }
  footer { padding: 44px 4% 24px; }
  .footer-bottom { flex-direction: column; align-items: center; text-align: center; }
  #scrollTop { bottom: 20px; right: 16px; width: 40px; height: 40px; }
  #toast { bottom: 20px; right: 16px; left: 16px; }
  .partners-logos { gap: 10px; }
  .partner-logo { padding: 10px 16px; font-size: 0.8rem; }
  .news-layout { grid-template-columns: 1fr; gap: 40px; }
}

/* ══════════════════════
   RESPONSIVE — SMALL ≤480px
══════════════════════ */
@media (max-width: 480px) {
  section { padding: 50px 4%; }
  .section-title { font-size: 1.5rem; }
  .about-image-wrap { max-height: 260px; overflow: hidden; }
  .about-stats-grid { bottom: 10px; gap: 6px; }
  .mini-stat { padding: 8px 6px; border-radius: 8px; }
  .mini-stat-num { font-size: 1.1rem; }
  .contact-form-wrap { padding: 16px; border-radius: 14px; }
  .form-group input, .form-group textarea, .form-group select { padding: 10px 12px; font-size: 0.84rem; }
  .btn-submit { padding: 12px; }
  .download-card { flex-direction: column; }
}

/* ── HOVER: TOUCH DEVICES ── */
@media (hover: none) {
  .product-card:hover { transform: none; }
  .solution-card:hover { transform: none; }
  .btn-primary:hover, .btn-outline:hover { transform: none; }
  .about-feature:hover { transform: none; }
  .card:hover { transform: none; }
}