/* ============================================
   腾飞振兴通风设备 - 企业官网样式系统
   Industrial Blue Theme
   ============================================ */

/* --- CSS Variables --- */
:root {
  --primary: #0d3b66;
  --primary-dark: #082a4a;
  --secondary: #1976d2;
  --accent: #2196f3;
  --accent-light: #64b5f6;
  --highlight: #ff8f00;
  --highlight-hover: #ff6f00;
  --bg-body: #f4f7fa;
  --bg-white: #ffffff;
  --bg-section: #edf2f7;
  --text-dark: #1a202c;
  --text-medium: #4a5568;
  --text-light: #718096;
  --border: #e2e8f0;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.12);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --transition: all 0.3s ease;
  --max-width: 1200px;
  --header-height: 72px;
}

/* --- Reset & Base --- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text-dark);
  background-color: var(--bg-body);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

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

ul, ol {
  list-style: none;
}

/* --- Utility --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section-title {
  text-align: center;
  margin-bottom: 50px;
}

.section-title h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}

.section-title h2::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--secondary), var(--accent));
  border-radius: 2px;
}

.section-title p {
  font-size: 1.05rem;
  color: var(--text-light);
  margin-top: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-align: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--secondary), var(--accent));
  color: #fff;
  box-shadow: 0 4px 15px rgba(25, 118, 210, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(25, 118, 210, 0.4);
}

.btn-highlight {
  background: linear-gradient(135deg, var(--highlight), var(--highlight-hover));
  color: #fff;
  box-shadow: 0 4px 15px rgba(255, 143, 0, 0.3);
}

.btn-highlight:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 143, 0, 0.4);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.6);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.15);
  border-color: #fff;
}

/* --- Header / Navigation --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  transition: var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--primary);
}

.logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.3rem;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo-text .brand {
  font-size: 1.15rem;
  color: var(--primary);
}

.logo-text .sub {
  font-size: 0.7rem;
  color: var(--text-light);
  font-weight: 400;
  letter-spacing: 1px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav a {
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-medium);
  position: relative;
}

.nav a:hover {
  color: var(--secondary);
  background: rgba(25, 118, 210, 0.06);
}

.nav a.active {
  color: var(--secondary);
  font-weight: 600;
}

.nav a.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 2.5px;
  background: var(--secondary);
  border-radius: 2px;
}

.nav-cta {
  margin-left: 12px;
  padding: 8px 22px !important;
  background: linear-gradient(135deg, var(--secondary), var(--accent)) !important;
  color: #fff !important;
  border-radius: var(--radius-sm) !important;
  font-weight: 600 !important;
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(25, 118, 210, 0.3);
  background: linear-gradient(135deg, var(--secondary), var(--accent)) !important;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}

.menu-toggle span {
  width: 24px;
  height: 2.5px;
  background: var(--primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* --- Hero Section --- */
.hero {
  margin-top: var(--header-height);
  background: linear-gradient(135deg, rgba(13,59,102,0.92) 0%, rgba(25,118,210,0.88) 50%, rgba(33,150,243,0.85) 100%), url('../images/hero-banner.png') center/cover no-repeat;
  color: #fff;
  position: relative;
  overflow: hidden;
  min-height: 520px;
  display: flex;
  align-items: center;
}

.hero.has-bg-image {
  background: linear-gradient(135deg, rgba(13,59,102,0.88) 0%, rgba(25,118,210,0.82) 50%, rgba(33,150,243,0.78) 100%), url('../images/hero-banner.png') center/cover no-repeat;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(circle at 20% 80%, rgba(255,255,255,0.05) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255,255,255,0.08) 0%, transparent 50%);
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 80px;
  background: linear-gradient(to top, var(--bg-body), transparent);
}

.hero .container {
  position: relative;
  z-index: 1;
  padding-top: 60px;
  padding-bottom: 80px;
}

.hero-content {
  max-width: 640px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(4px);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  margin-bottom: 24px;
  border: 1px solid rgba(255,255,255,0.2);
}

.hero h1 {
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.hero h1 .highlight {
  background: linear-gradient(90deg, #ffd54f, #ffb300);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.15rem;
  line-height: 1.8;
  opacity: 0.9;
  margin-bottom: 32px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.2);
}

.hero-stat {
  text-align: center;
}

.hero-stat .number {
  font-size: 2.2rem;
  font-weight: 800;
  display: block;
  line-height: 1;
}

.hero-stat .label {
  font-size: 0.85rem;
  opacity: 0.8;
  margin-top: 6px;
}

/* Decorative elements */
.hero-deco {
  position: absolute;
  right: -40px;
  top: 50%;
  transform: translateY(-50%);
  width: 500px;
  height: 500px;
  opacity: 0.06;
  font-size: 400px;
  line-height: 1;
}

/* --- Page Banner (subpages) --- */
.page-banner {
  margin-top: var(--header-height);
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: #fff;
  padding: 60px 0 50px;
  position: relative;
  overflow: hidden;
}

.page-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 70% 30%, rgba(255,255,255,0.08) 0%, transparent 50%);
}

.page-banner .container {
  position: relative;
  z-index: 1;
}

.page-banner h1 {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.page-banner .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  opacity: 0.8;
}

.page-banner .breadcrumb a:hover {
  opacity: 1;
  text-decoration: underline;
}

/* --- Advantages Section --- */
.advantages {
  padding: 80px 0;
  background: var(--bg-white);
}

.adv-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.adv-card {
  text-align: center;
  padding: 36px 24px;
  border-radius: var(--radius-md);
  background: var(--bg-body);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.adv-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent-light);
}

.adv-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, var(--secondary), var(--accent));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: #fff;
}

.adv-card h3 {
  font-size: 1.1rem;
  color: var(--primary);
  margin-bottom: 10px;
}

.adv-card p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.6;
}

/* --- Products Section --- */
.products-section {
  padding: 80px 0;
}

.product-categories {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.cat-btn {
  padding: 8px 22px;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  border: 2px solid var(--border);
  background: var(--bg-white);
  color: var(--text-medium);
  transition: var(--transition);
}

.cat-btn:hover,
.cat-btn.active {
  border-color: var(--secondary);
  color: var(--secondary);
  background: rgba(25, 118, 210, 0.05);
}

.cat-btn.active {
  background: var(--secondary);
  color: #fff;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.product-card {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  cursor: pointer;
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.product-img {
  width: 100%;
  height: 220px;
  background: linear-gradient(135deg, #e8eef5, #d5e3f0);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.product-img i {
  font-size: 3.5rem;
  color: var(--secondary);
  opacity: 0.5;
}

.product-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  top: 0;
  left: 0;
}

.product-img .tag {
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--highlight);
  color: #fff;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
}

.product-info {
  padding: 20px;
}

.product-info h3 {
  font-size: 1.05rem;
  color: var(--primary);
  margin-bottom: 8px;
}

.product-info p {
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: 12px;
}

.product-info .specs {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.product-info .spec-tag {
  padding: 3px 10px;
  background: var(--bg-section);
  border-radius: 12px;
  font-size: 0.78rem;
  color: var(--text-medium);
}

.product-info .more-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--secondary);
  font-size: 0.88rem;
  font-weight: 500;
  margin-top: 12px;
}

.product-info .more-link:hover {
  gap: 8px;
}

/* --- CTA Section --- */
.cta-section {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  padding: 60px 0;
  text-align: center;
}

.cta-section h2 {
  font-size: 1.8rem;
  margin-bottom: 12px;
}

.cta-section p {
  font-size: 1.05rem;
  opacity: 0.85;
  margin-bottom: 28px;
}

.cta-section .btn-group {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* --- About Page --- */
.about-intro {
  padding: 80px 0;
  background: var(--bg-white);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-text h2 {
  font-size: 1.8rem;
  color: var(--primary);
  margin-bottom: 20px;
}

.about-text p {
  color: var(--text-medium);
  margin-bottom: 16px;
  line-height: 1.8;
}

.about-image {
  width: 100%;
  height: 360px;
  background: linear-gradient(135deg, rgba(13,59,102,0.7), rgba(25,118,210,0.7)), url('../images/factory-exterior.png') center/cover no-repeat;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.15);
  font-size: 6rem;
  position: relative;
  overflow: hidden;
}

.about-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  top: 0;
  left: 0;
}

.about-image::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 40%;
  background: linear-gradient(to top, rgba(0,0,0,0.3), transparent);
}

.timeline {
  padding: 80px 0;
  background: var(--bg-section);
}

.timeline-list {
  max-width: 700px;
  margin: 0 auto;
  position: relative;
}

.timeline-list::before {
  content: '';
  position: absolute;
  left: 24px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(to bottom, var(--secondary), var(--accent));
  border-radius: 2px;
}

.timeline-item {
  display: flex;
  gap: 24px;
  margin-bottom: 36px;
  position: relative;
}

.timeline-dot {
  width: 50px;
  min-width: 50px;
  height: 50px;
  background: var(--bg-white);
  border: 3px solid var(--secondary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.8rem;
  color: var(--secondary);
  z-index: 1;
}

.timeline-content {
  background: var(--bg-white);
  padding: 20px 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  flex: 1;
}

.timeline-content h3 {
  font-size: 1rem;
  color: var(--primary);
  margin-bottom: 6px;
}

.timeline-content p {
  font-size: 0.9rem;
  color: var(--text-light);
}

/* --- Bases Section --- */
.bases {
  padding: 80px 0;
  background: var(--bg-white);
}

.bases-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
}

.base-card {
  background: var(--bg-body);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.base-card:hover {
  box-shadow: var(--shadow-md);
}

.base-header {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  padding: 24px 28px;
}

.base-header h3 {
  font-size: 1.2rem;
  margin-bottom: 4px;
}

.base-header p {
  font-size: 0.85rem;
  opacity: 0.8;
}

.base-body {
  padding: 24px 28px;
}

.base-body .info-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
}

.base-body .info-row i {
  color: var(--secondary);
  margin-top: 4px;
  min-width: 16px;
}

.base-body .info-row span {
  font-size: 0.92rem;
  color: var(--text-medium);
}

/* --- Contact Page --- */
.contact-section {
  padding: 80px 0;
  background: var(--bg-white);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-info h2 {
  font-size: 1.6rem;
  color: var(--primary);
  margin-bottom: 20px;
}

.contact-info > p {
  color: var(--text-medium);
  margin-bottom: 32px;
  line-height: 1.8;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
}

.contact-item .icon-box {
  width: 44px;
  height: 44px;
  min-width: 44px;
  background: linear-gradient(135deg, var(--secondary), var(--accent));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1rem;
}

.contact-item .text h4 {
  font-size: 0.95rem;
  color: var(--primary);
  margin-bottom: 4px;
}

.contact-item .text p {
  font-size: 0.88rem;
  color: var(--text-light);
}

.contact-qr {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.qr-card {
  background: var(--bg-body);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
  width: 100%;
  border: 1px solid var(--border);
}

.qr-card h3 {
  font-size: 1.1rem;
  color: var(--primary);
  margin-bottom: 20px;
}

.qr-placeholder {
  width: 200px;
  height: 200px;
  margin: 0 auto 16px;
  background: var(--bg-white);
  border: 2px dashed var(--border);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  font-size: 0.85rem;
  gap: 8px;
}

.qr-placeholder i {
  font-size: 2rem;
  color: var(--accent-light);
}

.qr-card p {
  font-size: 0.88rem;
  color: var(--text-light);
}

/* Map placeholder */
.map-section {
  background: var(--bg-section);
  padding: 60px 0;
}

.map-placeholder {
  width: 100%;
  height: 300px;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  font-size: 1rem;
}

/* --- Footer --- */
.footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.7);
  padding: 48px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 36px;
  margin-bottom: 36px;
}

.footer-brand .brand-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 0.88rem;
  line-height: 1.7;
}

.footer h4 {
  color: #fff;
  font-size: 0.95rem;
  margin-bottom: 16px;
  font-weight: 600;
}

.footer-links a {
  display: block;
  padding: 4px 0;
  font-size: 0.88rem;
  color: rgba(255,255,255,0.6);
}

.footer-links a:hover {
  color: var(--accent-light);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.4);
  flex-wrap: wrap;
  gap: 12px;
}

/* --- Product Detail Page --- */
.product-detail {
  padding: 80px 0;
  background: var(--bg-white);
}

.detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.detail-gallery {
  background: var(--bg-section);
  border-radius: var(--radius-lg);
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.detail-gallery i {
  font-size: 5rem;
  color: var(--secondary);
  opacity: 0.3;
}

.detail-info h1 {
  font-size: 1.8rem;
  color: var(--primary);
  margin-bottom: 12px;
}

.detail-info .subtitle {
  font-size: 1rem;
  color: var(--text-light);
  margin-bottom: 24px;
}

.detail-features {
  margin-bottom: 28px;
}

.detail-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  font-size: 0.92rem;
  color: var(--text-medium);
}

.detail-features li i {
  color: var(--accent);
  font-size: 0.85rem;
}

.detail-specs {
  background: var(--bg-section);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 28px;
}

.detail-specs h3 {
  font-size: 1rem;
  color: var(--primary);
  margin-bottom: 14px;
}

.specs-table {
  width: 100%;
  border-collapse: collapse;
}

.specs-table tr {
  border-bottom: 1px solid var(--border);
}

.specs-table tr:last-child {
  border-bottom: none;
}

.specs-table td {
  padding: 10px 0;
  font-size: 0.88rem;
}

.specs-table td:first-child {
  color: var(--text-light);
  width: 120px;
}

.specs-table td:last-child {
  color: var(--text-dark);
  font-weight: 500;
}

.detail-actions {
  display: flex;
  gap: 14px;
}

/* --- Responsive Design --- */
@media (max-width: 1024px) {
  .adv-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  .menu-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--bg-white);
    flex-direction: column;
    padding: 80px 24px 24px;
    gap: 4px;
    box-shadow: var(--shadow-lg);
    transition: right 0.3s ease;
    align-items: stretch;
  }

  .nav.open {
    right: 0;
  }

  .nav a {
    padding: 12px 16px;
    font-size: 1rem;
  }

  .nav a.active::after {
    display: none;
  }

  .nav-cta {
    margin-left: 0 !important;
    margin-top: 12px;
    text-align: center;
    justify-content: center;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero-stats {
    gap: 24px;
  }

  .hero-stat .number {
    font-size: 1.6rem;
  }

  .hero-deco {
    display: none;
  }

  .adv-grid {
    grid-template-columns: 1fr;
  }

  .product-grid {
    grid-template-columns: 1fr;
  }

  .about-grid,
  .contact-grid,
  .detail-grid,
  .bases-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .section-title h2 {
    font-size: 1.6rem;
  }

  .page-banner h1 {
    font-size: 1.6rem;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.6rem;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .hero-stats {
    flex-direction: column;
    gap: 16px;
  }

  .hero-stat {
    display: flex;
    align-items: center;
    gap: 12px;
  }
}

/* --- Animation --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-in {
  animation: fadeInUp 0.6s ease forwards;
}

.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }
.animate-delay-4 { animation-delay: 0.4s; }

/* --- Product Detail Modal --- */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.5);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.modal-overlay.active {
  display: flex;
}

.modal-content {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  max-width: 800px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 40px;
  position: relative;
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border: none;
  background: var(--bg-section);
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: var(--text-medium);
  transition: var(--transition);
}

.modal-close:hover {
  background: var(--border);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-body);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-light);
}