/* ===========================
   VTEC — Global Styles
   =========================== */
:root {
  --navy: #0a1e3d;
  --navy-light: #132d54;
  --blue: #1a73e8;
  --blue-dark: #1557b0;
  --cyan: #00b4d8;
  --cyan-light: #48cae4;
  --gradient: linear-gradient(135deg, #00b4d8, #1a73e8);
  --gradient-text: linear-gradient(135deg, #48cae4, #1a73e8);
  --white: #ffffff;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  --text: #1e293b;
  --text-light: #64748b;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text);
  background: var(--white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===========================
   NAVBAR
   =========================== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: all var(--transition);
}
.navbar.scrolled {
  background: rgba(10, 30, 61, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 10px 0;
  box-shadow: 0 4px 30px rgba(0,0,0,0.2);
}
.nav-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-brand { display: flex; align-items: center; gap: 10px; }
.nav-logo { height: 38px; width: auto; border-radius: 8px; }
.nav-links { display: flex; align-items: center; gap: 8px; }
.nav-link {
  color: rgba(255,255,255,0.8);
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition);
}
.nav-link:hover, .nav-link.active { color: white; background: rgba(255,255,255,0.1); }
.nav-link.nav-cta {
  background: var(--gradient);
  color: white;
  font-weight: 600;
  padding: 8px 20px;
}
.nav-link.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 4px 15px rgba(0,180,216,0.4); }

.nav-hamburger {
  display: none;
  flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 8px;
}
.nav-hamburger span { width: 24px; height: 2px; background: white; transition: var(--transition); border-radius: 2px; }

/* ===========================
   BUTTONS
   =========================== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 24px;
  border-radius: 10px;
  font-size: 15px; font-weight: 600;
  border: none; cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}
.btn-lg { padding: 14px 28px; font-size: 16px; border-radius: 12px; }
.btn-xl { padding: 16px 32px; font-size: 17px; border-radius: 14px; }
.btn-primary {
  background: var(--gradient); color: white;
  box-shadow: 0 4px 20px rgba(0,180,216,0.3);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0,180,216,0.4); }
.btn-glass {
  background: rgba(255,255,255,0.1); color: white;
  border: 1px solid rgba(255,255,255,0.2);
  backdrop-filter: blur(10px);
}
.btn-glass:hover { background: rgba(255,255,255,0.2); transform: translateY(-2px); }
.btn-outline {
  background: transparent; color: var(--blue);
  border: 2px solid var(--blue);
}
.btn-outline:hover { background: var(--blue); color: white; transform: translateY(-2px); }
.btn-tiktok {
  background: #000; color: white;
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}
.btn-tiktok:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0,0,0,0.3); }

/* ===========================
   HERO
   =========================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
  padding: 100px 24px 60px;
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
}
.hero-bg video {
  width: 100%; height: 100%;
  object-fit: cover;
}
.hero-bg-animated {
  width: 100%; height: 100%;
  background: var(--navy);
  background-image:
    radial-gradient(ellipse 80% 50% at 50% 0%, rgba(0,180,216,0.15), transparent),
    radial-gradient(ellipse 60% 40% at 80% 100%, rgba(26,115,232,0.1), transparent);
}
.hero-bg-animated::after {
  content: '';
  position: absolute; inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  animation: bgScroll 60s linear infinite;
}
@keyframes bgScroll { from { transform: translate(0,0); } to { transform: translate(60px,60px); } }

.hero-overlay {
  position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(180deg, rgba(10,30,61,0.3) 0%, rgba(10,30,61,0.6) 100%);
}
.hero-content {
  position: relative; z-index: 2;
  text-align: center;
  max-width: 800px;
  color: white;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.15);
  padding: 8px 20px;
  border-radius: 100px;
  font-size: 14px; font-weight: 500;
  margin-bottom: 24px;
  backdrop-filter: blur(10px);
}
.badge-dot {
  width: 8px; height: 8px;
  background: var(--cyan);
  border-radius: 50%;
  animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.5); }
}
.hero-title {
  font-size: clamp(32px, 6vw, 56px);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}
.gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: clamp(16px, 2.5vw, 19px);
  color: rgba(255,255,255,0.75);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 600px;
  margin-left: auto; margin-right: auto;
}
.hero-actions {
  display: flex; gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
/* Video animation logo banner */
.hero-video-banner {
  width: 100%; max-width: 500px; margin: 24px auto;
  border-radius: 16px; overflow: hidden;
  aspect-ratio: 16 / 7;
  background: transparent;
  position: relative;
}
.hero-video-banner video {
  width: 100%; height: 100%; object-fit: cover;
  display: block;
}

/* === CHẾ ĐỘ NỀN VIDEO === */
/* Nền đen: dùng lighten → đen biến mất, giữ phần sáng */
.hero-video-banner.bg-dark video {
  mix-blend-mode: lighten;
}
/* Nền trắng: hiệu ứng glow viền sáng xanh + bo tròn đẹp */
.hero-video-banner.bg-light {
  border: 1px solid rgba(255,255,255,0.15);
  box-shadow:
    0 0 20px rgba(26,115,232,0.3),
    0 0 60px rgba(0,180,216,0.15),
    inset 0 0 20px rgba(255,255,255,0.05);
}
.hero-video-banner.bg-light::before {
  content: '';
  position: absolute; inset: -2px;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(26,115,232,0.4), rgba(0,180,216,0.2), rgba(26,115,232,0.1));
  z-index: -1;
  filter: blur(8px);
  animation: glow-pulse 3s ease-in-out infinite alternate;
}
@keyframes glow-pulse {
  0% { opacity: 0.6; filter: blur(8px); }
  100% { opacity: 1; filter: blur(12px); }
}

/* Khi chưa có video, hiện khung placeholder */
.hero-video-banner:not(.has-video) {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
}
.hero-video-placeholder {
  position: absolute; inset: 0;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 8px;
}
.hero-video-placeholder p {
  font-size: 12px; color: rgba(255,255,255,0.3);
}
/* Ẩn placeholder khi video đã load */
.hero-video-banner video[src]:not([src=""]) ~ .hero-video-placeholder { display: none; }

.hero-stats {
  display: flex; align-items: center; justify-content: center; gap: 32px;
  flex-wrap: nowrap;
  margin-top: 8px;
}
.stat { text-align: center; flex: 1; }
.stat-num {
  font-size: 28px; font-weight: 800;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat-num::after { content: '+'; }
.stat-label { font-size: 12px; color: rgba(255,255,255,0.6); margin-top: 4px; }
.stat-divider { width: 1px; height: 32px; background: rgba(255,255,255,0.15); flex-shrink: 0; }
}

/* ===========================
   VIDEO MODAL
   =========================== */
.video-modal {
  display: none;
  position: fixed; inset: 0; z-index: 2000;
  align-items: center; justify-content: center;
}
.video-modal.active { display: flex; }
.video-modal-backdrop {
  position: absolute; inset: 0;
  background: rgba(0,0,0,0.9);
  animation: fadeIn 0.3s;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.video-modal-content {
  position: relative; z-index: 1;
  width: 90%; max-width: 900px;
  aspect-ratio: 16/9;
  border-radius: 16px;
  overflow: hidden;
  animation: modalZoomIn 0.3s ease;
}
@keyframes modalZoomIn { from { transform: scale(0.9); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.video-modal-close {
  position: absolute; top: 16px; right: 16px;
  z-index: 10;
  width: 40px; height: 40px;
  background: rgba(0,0,0,0.5); color: white;
  border: none; border-radius: 50%;
  font-size: 20px; cursor: pointer;
}
.video-modal-player { width: 100%; height: 100%; }
.video-modal-player iframe { width: 100%; height: 100%; border: none; }
.video-placeholder-large {
  width: 100%; height: 100%;
  background: var(--navy);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  color: rgba(255,255,255,0.6);
  gap: 12px;
}
.video-placeholder-large code { font-size: 13px; opacity: 0.5; }

/* ===========================
   SECTIONS
   =========================== */
.section { padding: 100px 0; }
.section-header { text-align: center; margin-bottom: 60px; }
.section-tag {
  display: inline-block;
  background: linear-gradient(135deg, rgba(0,180,216,0.1), rgba(26,115,232,0.1));
  color: var(--blue);
  padding: 6px 18px;
  border-radius: 100px;
  font-size: 13px; font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.section-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.section-desc {
  font-size: 17px; color: var(--text-light);
  max-width: 600px; margin: 0 auto;
  line-height: 1.7;
}
.section-footer { text-align: center; margin-top: 48px; }

/* ===========================
   PRODUCTS
   =========================== */
.products-section { background: var(--gray-50); }

.product-filters {
  display: flex; justify-content: center; gap: 8px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.filter-btn {
  padding: 8px 20px;
  border: 1px solid var(--gray-200);
  background: white;
  border-radius: 100px;
  font-size: 14px; font-weight: 500;
  color: var(--text-light);
  cursor: pointer;
  transition: all var(--transition);
}
.filter-btn:hover { border-color: var(--blue); color: var(--blue); }
.filter-btn.active {
  background: var(--blue); color: white;
  border-color: var(--blue);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.product-card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--gray-200);
  transition: all var(--transition);
  cursor: pointer;
}
.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}
.product-card-img {
  position: relative;
  aspect-ratio: 16/10;
  background: linear-gradient(135deg, var(--navy), var(--navy-light));
  overflow: hidden;
}
.product-card-img .img-placeholder {
  width: 100%; height: 100%;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  color: rgba(255,255,255,0.4);
  font-size: 14px;
  gap: 8px;
}
.product-card-img .img-placeholder svg { opacity: 0.3; }
/* GIF hover effect */
.product-card-img .gif-overlay {
  position: absolute; inset: 0;
  background: rgba(0,0,0,0.4);
  display: flex; align-items: center; justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
}
.product-card:hover .gif-overlay { opacity: 1; }
.gif-overlay .play-icon {
  width: 56px; height: 56px;
  background: rgba(255,255,255,0.2);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(10px);
  animation: pulse-play 2s infinite;
}
@keyframes pulse-play { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.1); } }

.product-card-tag {
  position: absolute; top: 12px; left: 12px;
  background: var(--gradient); color: white;
  padding: 4px 12px; border-radius: 20px;
  font-size: 11px; font-weight: 600;
  text-transform: uppercase;
}
.product-card-body { padding: 20px; }
.product-card-body h3 { font-size: 18px; font-weight: 700; margin-bottom: 6px; }
.product-card-body p { font-size: 14px; color: var(--text-light); line-height: 1.6; margin-bottom: 16px; }
.product-card-footer {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--gray-100);
}
.product-card-price {
  font-size: 13px; color: var(--blue);
  font-weight: 600;
  display: flex; align-items: center; gap: 4px;
}
.product-card-link {
  font-size: 13px; font-weight: 600;
  color: var(--blue);
  display: flex; align-items: center; gap: 4px;
  transition: gap var(--transition);
}
.product-card:hover .product-card-link { gap: 8px; }

/* ===========================
   WHY VTEC
   =========================== */
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}
.why-card {
  padding: 32px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
  background: white;
  transition: all var(--transition);
}
.why-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.why-icon {
  width: 56px; height: 56px;
  background: linear-gradient(135deg, rgba(0,180,216,0.1), rgba(26,115,232,0.1));
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  color: var(--blue);
  margin-bottom: 20px;
}
.why-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.why-card p { font-size: 14px; color: var(--text-light); line-height: 1.7; }

/* ===========================
   VIDEO / TIKTOK GRID
   =========================== */
.video-section { background: var(--gray-50); }
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.video-card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--gray-200);
  transition: all var(--transition);
  cursor: pointer;
}
.video-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.video-thumb {
  position: relative;
  aspect-ratio: 9/12;
  background: linear-gradient(135deg, #111, #1a1a2e);
  overflow: hidden;
}
.video-thumb-placeholder {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
}
.video-badge {
  position: absolute; bottom: 12px; left: 12px;
  background: #000; color: white;
  padding: 4px 12px; border-radius: 20px;
  font-size: 12px; font-weight: 700;
}
.video-info { padding: 16px; }
.video-info h4 { font-size: 15px; font-weight: 600; margin-bottom: 4px; }
.video-info p { font-size: 13px; color: var(--text-light); }

/* ===========================
   CTA SECTION
   =========================== */
.cta-section {
  position: relative;
  background: var(--navy);
  overflow: hidden;
}
.cta-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 50% 80% at 20% 50%, rgba(0,180,216,0.15), transparent),
    radial-gradient(ellipse 50% 80% at 80% 50%, rgba(26,115,232,0.1), transparent);
}
.cta-content {
  position: relative;
  text-align: center;
  color: white;
  max-width: 700px;
  margin: 0 auto;
}
.cta-content h2 { font-size: clamp(28px, 4vw, 40px); font-weight: 800; margin-bottom: 16px; line-height: 1.2; }
.cta-content p { font-size: 17px; color: rgba(255,255,255,0.7); margin-bottom: 32px; line-height: 1.7; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.cta-note {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 24px;
  font-size: 13px; color: rgba(255,255,255,0.5);
}

/* ===========================
   FOOTER
   =========================== */
.footer {
  background: var(--gray-900);
  color: var(--gray-400);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-logo { height: 40px; margin-bottom: 12px; filter: brightness(0) invert(1); }
.footer-brand p { font-size: 14px; margin-bottom: 16px; }
.footer-socials { display: flex; gap: 12px; }
.footer-socials a {
  width: 40px; height: 40px;
  background: rgba(255,255,255,0.05);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: var(--gray-400);
  transition: all var(--transition);
}
.footer-socials a:hover { background: var(--blue); color: white; transform: translateY(-2px); }
.footer-links h4 { color: white; font-size: 14px; font-weight: 600; margin-bottom: 16px; }
.footer-links a {
  display: block;
  font-size: 14px;
  padding: 4px 0;
  color: var(--gray-400);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--cyan); }
.footer-bottom { padding: 24px 0; text-align: center; font-size: 13px; }

/* ===========================
   FLOATING ACTIONS
   =========================== */
.floating-actions {
  position: fixed; bottom: 24px; right: 24px;
  z-index: 900;
  display: flex; flex-direction: column; gap: 12px;
}
.fab-phone, .fab-zalo, .fab-messenger {
  width: 56px; height: 56px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition);
  text-decoration: none;
}
.fab-phone { background: #16a34a; }
.fab-zalo { background: #0068ff; }
.fab-messenger { background: linear-gradient(135deg, #0695FF, #A334FA, #FF6968); }
.fab-phone:hover, .fab-zalo:hover, .fab-messenger:hover { transform: scale(1.1) translateY(-2px); }

/* ===========================
   ANIMATIONS
   =========================== */
[data-animate] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
[data-animate].visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===========================
   RESPONSIVE
   =========================== */
@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(10,30,61,0.98);
    flex-direction: column;
    align-items: center; justify-content: center;
    gap: 16px;
    backdrop-filter: blur(20px);
  }
  .nav-links.open { display: flex; z-index: 999; }
  .nav-hamburger { display: flex; z-index: 1001; }
  .hero { padding: 80px 20px 40px; }
  .hero-stats { gap: 16px; }
  .stat-num { font-size: 24px; }
  .stat-label { font-size: 11px; }
  .hero-video-banner { aspect-ratio: 16 / 8; }
  .section { padding: 60px 0; }
  .product-grid { grid-template-columns: 1fr; }
  .video-grid { grid-template-columns: 1fr; }
  .video-thumb { aspect-ratio: 16/9; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .cta-actions { flex-direction: column; align-items: center; }
}

/* ===========================
   PRODUCT PAGE STYLES
   =========================== */
.product-hero {
  position: relative;
  min-height: 60vh;
  display: flex; align-items: center;
  background: var(--navy);
  overflow: hidden;
  padding: 120px 24px 80px;
}
.product-hero-content {
  position: relative; z-index: 2;
  color: white;
  max-width: 550px;
}
.product-hero-content .breadcrumb {
  font-size: 13px; color: rgba(255,255,255,0.5);
  margin-bottom: 16px;
}
.product-hero-content .breadcrumb a { color: var(--cyan); }
.product-hero-content h1 {
  font-size: clamp(28px, 5vw, 44px);
  font-weight: 800; margin-bottom: 16px; line-height: 1.2;
}
.product-hero-content .desc {
  font-size: 17px; color: rgba(255,255,255,0.7);
  line-height: 1.7; margin-bottom: 28px;
}
.product-hero-media {
  position: absolute; right: -5%; top: 50%; transform: translateY(-50%);
  width: 50%; max-width: 600px;
  z-index: 1;
}
.product-hero-media .media-frame {
  aspect-ratio: 4/3;
  background: rgba(255,255,255,0.05);
  border-radius: 20px;
  border: 1px solid rgba(255,255,255,0.1);
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.3);
}

/* Feature sections */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  padding: 80px 0;
}
.feature-row:nth-child(even) .feature-media { order: -1; }
.feature-media {
  aspect-ratio: 4/3;
  background: var(--gray-100);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--gray-200);
}
.feature-media .gif-frame {
  width: 100%; height: 100%;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  color: var(--text-light); font-size: 14px; gap: 8px;
}
.feature-text .feature-tag {
  display: inline-block;
  background: linear-gradient(135deg, rgba(0,180,216,0.1), rgba(26,115,232,0.1));
  color: var(--blue);
  padding: 4px 14px; border-radius: 100px;
  font-size: 12px; font-weight: 600;
  margin-bottom: 12px;
  text-transform: uppercase;
}
.feature-text h3 { font-size: 28px; font-weight: 800; margin-bottom: 12px; }
.feature-text p { font-size: 16px; color: var(--text-light); line-height: 1.8; margin-bottom: 20px; }
.feature-list { list-style: none; }
.feature-list li {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 8px 0; font-size: 15px; color: var(--gray-600);
}
.feature-list li::before {
  content: '';
  width: 20px; height: 20px; flex-shrink: 0; margin-top: 2px;
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
}

.specs-section { background: var(--gray-50); }
.specs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}
.spec-card {
  background: white; padding: 24px;
  border-radius: var(--radius);
  border: 1px solid var(--gray-200);
}
.spec-card .spec-label { font-size: 13px; color: var(--text-light); margin-bottom: 4px; }
.spec-card .spec-value { font-size: 20px; font-weight: 700; color: var(--blue); }

@media (max-width: 768px) {
  .feature-row { grid-template-columns: 1fr; gap: 30px; }
  .feature-row:nth-child(even) .feature-media { order: 0; }
  .product-hero-media { display: none; }
  .product-hero-content { max-width: 100%; }
}

/* ===========================
   GUIDE INDEX STYLES
   =========================== */
.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.guide-card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--gray-200);
  transition: all var(--transition);
}
.guide-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.guide-card-img {
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, var(--navy), var(--navy-light));
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.4); font-size: 40px;
}
.guide-card-body { padding: 20px; }
.guide-card-body h3 { font-size: 17px; font-weight: 700; margin-bottom: 6px; }
.guide-card-body p { font-size: 13px; color: var(--text-light); margin-bottom: 12px; }
.guide-card-meta {
  display: flex; align-items: center; gap: 16px;
  font-size: 12px; color: var(--text-light);
}