/* ========================================
   共鸿电器 GOHO ELECTRIC - 国内站
   品牌色：青绿 #309298 / 橙色 #E16E29 / 黑 #1D1819
   ======================================== */

:root {
  --primary: #309298;
  --primary-dark: #267578;
  --primary-light: #e8f5f5;
  --accent: #E16E29;
  --accent-dark: #c55a1e;
  --accent-light: #fdf0e8;
  --dark: #1D1819;
  --dark-light: #3a3536;
  --gray-100: #f8f9fa;
  --gray-200: #e9ecef;
  --gray-300: #dee2e6;
  --gray-400: #ced4da;
  --gray-500: #adb5bd;
  --gray-600: #6c757d;
  --gray-700: #495057;
  --gray-800: #343a40;
  --white: #ffffff;
  --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 8px 30px rgba(0,0,0,0.12);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
  --radius: 8px;
  --radius-lg: 12px;
  --radius-xl: 20px;
  --transition: all 0.3s ease;
  --max-width: 1200px;
}

/* ============ RESET ============ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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(--gray-800);
  background: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
img { max-width: 100%; height: auto; display: block; }

/* ============ HEADER ============ */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-200);
  transition: var(--transition);
}

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

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo img { height: 40px; width: auto; }

.logo-text {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--dark);
  letter-spacing: 0.5px;
}

.logo-text span {
  color: var(--primary);
}

.nav { display: flex; align-items: center; gap: 4px; }

.nav a {
  padding: 8px 16px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--gray-700);
  transition: var(--transition);
  white-space: nowrap;
}

.nav a:hover,
.nav a.active {
  color: var(--primary);
  background: var(--primary-light);
}

.nav-cta {
  background: var(--accent) !important;
  color: var(--white) !important;
  margin-left: 8px;
  padding: 10px 20px !important;
}

.nav-cta:hover {
  background: var(--accent-dark) !important;
  color: var(--white) !important;
}

/* Mobile nav */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

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

/* Product dropdown */
.nav-dropdown {
  position: relative;
}

.nav-dropdown > a::after {
  content: '▾';
  margin-left: 4px;
  font-size: 0.7rem;
}

.nav-dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  min-width: 200px;
  padding: 8px 0;
  border: 1px solid var(--gray-200);
}

.nav-dropdown:hover .nav-dropdown-menu { display: block; }

.nav-dropdown-menu a {
  display: block;
  padding: 10px 20px;
  font-size: 0.9rem;
  border-radius: 0;
}

.nav-dropdown-menu a:hover {
  background: var(--primary-light);
}

/* Third-level sub-menu (products under each category) */
.nav-sub-dropdown {
  position: relative;
}

.nav-sub-dropdown > a {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-arrow {
  font-size: 0.7rem;
  color: var(--gray-400);
  margin-left: 12px;
}

.nav-sub-menu {
  display: none;
  position: absolute;
  left: 100%;
  top: 0;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  min-width: 240px;
  max-height: 480px;
  overflow-y: auto;
  padding: 8px 0;
  border: 1px solid var(--gray-200);
}

.nav-sub-dropdown:hover > .nav-sub-menu { display: block; }

.nav-sub-dropdown:hover > a {
  background: var(--primary-light);
}

.nav-sub-menu a {
  display: block;
  padding: 8px 20px;
  font-size: 0.85rem;
  border-radius: 0;
  color: var(--gray-600);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-sub-menu a:hover {
  background: var(--primary-light);
  color: var(--primary);
}

/* ============ HERO ============ */
.hero {
  margin-top: 70px;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 40%, #1a6b6f 100%);
  position: relative;
  overflow: hidden;
  min-height: 560px;
  display: flex;
  align-items: center;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%; right: -20%;
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(255,255,255,0.06) 0%, transparent 70%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%; left: -10%;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(225,110,41,0.1) 0%, transparent 70%);
  border-radius: 50%;
}

/* Hero with background image or video */
.hero-has-media::before,
.hero-has-media::after { display: none; }

.hero-img-bg {
  position: absolute; inset: 0; z-index: 0;
}
.hero-img-bg img {
  width: 100%; height: 100%; object-fit: cover;
}
.hero-img-bg::after {
  content: '';
  position: absolute; inset: 0;
  background: transparent;
}

.hero-video-bg {
  position: absolute; inset: 0; z-index: 0; overflow: hidden;
}
.hero-video-bg iframe {
  position: absolute; top: 50%; left: 50%;
  width: 100vw; height: 56.25vw;
  min-height: 100%; min-width: 177.77vh;
  transform: translate(-50%, -50%);
  border: none; pointer-events: none;
}
.hero-video-bg::after {
  content: '';
  position: absolute; inset: 0;
  background: rgba(0,0,0,0.55);
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 80px 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content { color: var(--white); position: relative; z-index: 1; max-width: 700px; margin: 0 auto; padding: 80px 24px; }

/* When hero has background image/video, align content to the left */
/* When hero has background image/video, align content to the left */
.hero-has-media .hero-content {
  margin-left: 40px; margin-right: auto; text-align: left;
  padding: 50px 40px;
  background: rgba(48,146,152,0.65);
  border-radius: 12px;
  max-width: 520px;
  color: var(--white);
}

.hero-has-media .btn-primary {
  background: var(--accent);
  color: var(--white);
  border: 2px solid var(--accent);
  box-shadow: 0 4px 16px rgba(225,110,41,0.3);
}
.hero-has-media .btn-primary:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(225,110,41,0.4);
}

.hero-has-media .btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,0.5);
}
.hero-has-media .btn-outline:hover {
  background: rgba(255,255,255,0.15);
  border-color: var(--white);
}

.hero-tag {
  display: inline-block;
  background: rgba(255,255,255,0.15);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  margin-bottom: 20px;
  backdrop-filter: blur(4px);
}

.hero-sub { font-size: 1.4rem; font-weight: 300; letter-spacing: 4px; margin-bottom: 12px; opacity: 0.8; }
.hero-sub sup { font-size: 0.65rem; vertical-align: super; }
.hero-desc { font-size: 1rem; opacity: 0.7; margin-bottom: 32px; line-height: 1.8; }

.hero-buttons { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-badge {
  display: inline-block;
  background: rgba(255,255,255,0.15);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  margin-bottom: 20px;
  backdrop-filter: blur(4px);
}

.hero-content h1 {
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 10px;
}

.hero-content h1 em {
  font-style: normal;
  color: var(--accent);
}

.hero-content p {
  font-size: 1.1rem;
  opacity: 0.9;
  margin-bottom: 32px;
  line-height: 1.8;
}

.hero-btns {
  display: flex;
  gap: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(225,110,41,0.3);
}

.btn-primary:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(225,110,41,0.4);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,0.4);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--white);
}

.hero-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.stat-card {
  background: rgba(255,255,255,0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  text-align: center;
  color: var(--white);
}

.stat-number {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--accent);
  display: block;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.85;
  margin-top: 4px;
}

/* ============ SECTION COMMON ============ */
.section {
  padding: 80px 24px;
}

.section-gray {
  background: var(--gray-100);
}

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  padding: 5px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
}

.section-header p {
  color: var(--gray-600);
  font-size: 1.05rem;
  max-width: 600px;
  margin: 0 auto;
}

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

.product-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--gray-200);
  transition: var(--transition);
  cursor: pointer;
  position: relative;
}

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

.product-card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  display: block;
}

.product-card-icon {
  width: 64px;
  height: 64px;
  margin: 32px auto 0;
  background: var(--primary-light);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
}

.product-card-body { padding: 24px 28px 32px; }

.product-card-body h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--dark);
  text-align: center;
  margin-bottom: 12px;
}

.product-card-models {
  font-size: 0.85rem;
  color: var(--primary);
  text-align: center;
  font-weight: 500;
  margin-bottom: 10px;
}

.product-card-body .spec {
  font-size: 0.85rem;
  color: var(--gray-600);
  text-align: center;
  margin-bottom: 16px;
}

.product-card-arrow {
  display: block;
  text-align: center;
  color: var(--accent);
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
}

.product-card:hover .product-card-arrow {
  transform: translateX(4px);
}

/* ============ ADVANTAGES ============ */
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
}

.advantage-card {
  text-align: center;
  padding: 32px 20px;
}

.advantage-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 16px;
  background: var(--primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.advantage-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}

.advantage-card p {
  font-size: 0.85rem;
  color: var(--gray-600);
  line-height: 1.6;
}

/* ============ ABOUT PREVIEW ============ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-image {
  background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
  border-radius: var(--radius-xl);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.about-image-placeholder {
  text-align: center;
  color: var(--primary);
  font-size: 4rem;
  opacity: 0.5;
}

.about-content h2 {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 16px;
}

.about-content h2 span { color: var(--primary); }

.about-content p {
  color: var(--gray-600);
  margin-bottom: 16px;
  line-height: 1.8;
}

.about-list {
  margin: 20px 0;
}

.about-list li {
  padding: 8px 0;
  color: var(--gray-700);
  display: flex;
  align-items: center;
  gap: 10px;
}

.about-list li::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
  flex-shrink: 0;
}

/* ============ CONTACT CTA ============ */
.contact-cta {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: var(--white);
  text-align: center;
  padding: 64px 24px;
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
}

.contact-cta::before {
  content: '';
  position: absolute;
  top: -50%; right: -20%;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
  border-radius: 50%;
}

.contact-cta h3 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 12px;
  position: relative;
}

.contact-cta p {
  opacity: 0.85;
  margin-bottom: 24px;
  position: relative;
}

/* ============ HOMEPAGE CTA ============ */
.cta-section {
  padding: 80px 24px;
}
.cta-inner {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: var(--white);
  padding: 56px 32px;
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
}
.cta-inner::before {
  content: '';
  position: absolute;
  top: -40%; right: -15%;
  width: 350px; height: 350px;
  background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
  border-radius: 50%;
}
.cta-inner h2 {
  font-size: 1.8rem; font-weight: 700; margin-bottom: 12px; position: relative;
}
.cta-inner p {
  opacity: 0.85; margin-bottom: 28px; position: relative; font-size: 1rem;
}
.cta-inner .btn { position: relative; }

/* ============ GALLERY ============ */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.gallery-item {
  border-radius: 10px;
  overflow: hidden;
  aspect-ratio: 4/3;
  background: #e8ecec;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  cursor: pointer;
}
.gallery-item:hover {
  transform: scale(1.03);
  box-shadow: 0 8px 30px rgba(0,0,0,0.15);
}
.gallery-item img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}

@media (max-width: 900px) {
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 500px) {
  .gallery-grid { grid-template-columns: 1fr; }
}

/* ============ ABOUT CERTIFICATES ============ */
.about-cert-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
  max-width: 960px;
  margin: 0 auto;
}
.about-cert-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-decoration: none;
  background: #fff;
  border-radius: 12px;
  padding: 16px 10px 12px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  transition: all 0.3s ease;
}
.about-cert-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(48,146,152,0.15);
}
.about-cert-card img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  border-radius: 6px;
  margin-bottom: 10px;
  background: #eef2f2;
}
.about-cert-placeholder {
  width: 100%;
  aspect-ratio: 3/4;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #eef2f2;
  border-radius: 6px;
  font-size: 2rem;
  margin-bottom: 10px;
}
.about-cert-label {
  text-align: center;
}
.about-cert-label strong {
  display: block;
  font-size: 0.85rem;
  color: var(--dark);
  font-weight: 700;
  margin-bottom: 2px;
}
.about-cert-label span {
  font-size: 0.72rem;
  color: var(--gray-500);
}
@media (max-width: 768px) {
  .about-cert-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 500px) {
  .about-cert-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ============ FOOTER ============ */
.footer {
  background: var(--dark);
  color: var(--gray-400);
  padding: 56px 24px 24px;
}

.footer-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
}

.footer-brand h4 {
  color: var(--white);
  font-size: 1.1rem;
  margin-bottom: 12px;
}

.footer-brand h4 span { color: var(--primary); }

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

.footer-col h5 {
  color: var(--white);
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  font-size: 0.85rem;
  padding: 4px 0;
  color: var(--gray-500);
  transition: var(--transition);
}

.footer-col a:hover { color: var(--primary); }

.footer-bottom {
  max-width: var(--max-width);
  margin: 40px auto 0;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
}

/* ============ PAGE BANNER (Product/About) ============ */
.page-banner {
  margin-top: 70px;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: var(--white);
  text-align: center;
  padding: 60px 24px;
  position: relative;
  overflow: hidden;
}

.page-banner h1 {
  font-size: 2.2rem;
  font-weight: 700;
  position: relative;
}

.page-banner p {
  opacity: 0.85;
  margin-top: 10px;
  font-size: 1.05rem;
  position: relative;
}

.breadcrumb {
  margin-top: 12px;
  font-size: 0.85rem;
  opacity: 0.7;
  position: relative;
}

.breadcrumb a { color: var(--white); text-decoration: underline; }
.breadcrumb a:hover { opacity: 1; }

/* ============ PRODUCT DETAIL PAGE ============ */
.product-detail {
  padding: 60px 24px;
}

.product-detail-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.product-detail-visual {
  background: linear-gradient(135deg, #f0fafa, #fef8f4);
  border-radius: var(--radius-xl);
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  position: sticky;
  top: 100px;
  border: 1px solid rgba(48,146,152,0.12);
  overflow: hidden;
}

.product-detail-visual img {
  max-width: 95%;
  max-height: 95%;
  object-fit: contain;
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 40px rgba(0,0,0,0.08);
}

/* Product Gallery */
.product-gallery {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px 60px;
}

.product-gallery h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 24px;
  text-align: center;
}

.product-gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.product-gallery-grid img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
  transition: var(--transition);
}

.product-gallery-grid img:hover {
  transform: scale(1.03);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

@media (max-width: 768px) {
  .product-gallery-grid { grid-template-columns: 1fr; }
  .product-gallery-grid img { height: 200px; }
}

.product-visual-icon {
  font-size: 5rem;
  opacity: 0.4;
  color: var(--primary);
}

.product-detail-info h2 {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}

.product-detail-info h3 {
  font-size: 1.05rem;
  color: var(--primary);
  font-weight: 500;
  margin-bottom: 20px;
}

.product-detail-info p {
  color: var(--gray-600);
  line-height: 1.8;
  margin-bottom: 24px;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
}

.spec-table th,
.spec-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--gray-200);
  font-size: 0.9rem;
}

.spec-table th {
  background: var(--gray-100);
  font-weight: 600;
  color: var(--dark);
  width: 140px;
}

.product-models-section h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--primary);
  display: inline-block;
}

.model-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.model-tag {
  display: inline-block;
  padding: 8px 18px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 50px;
  font-size: 0.88rem;
  font-weight: 600;
}

/* ============ RELATED PRODUCTS ============ */
.related-products {
  padding: 0 24px 80px;
}

.related-products-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.related-products h3 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 28px;
}

/* ============ CONTACT PAGE ============ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  padding: 60px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.contact-info h3 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 20px;
}

.contact-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 16px 0;
  border-bottom: 1px solid var(--gray-200);
}

.contact-item-icon {
  width: 44px; height: 44px;
  background: var(--primary-light);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-item-text h4 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 2px;
}

.contact-item-text p {
  font-size: 0.9rem;
  color: var(--gray-600);
}

.contact-form {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--gray-200);
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-family: inherit;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.form-group textarea { min-height: 120px; resize: vertical; }

/* ============ ABOUT PAGE ============ */
.about-intro {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 60px 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.about-visual {
  background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
  border-radius: var(--radius-xl);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-text h2 {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 16px;
}

.about-text h2 span { color: var(--primary); }

.about-text p {
  color: var(--gray-600);
  line-height: 1.8;
  margin-bottom: 12px;
}

.why-us {
  background: var(--gray-100);
  padding: 60px 24px;
}

.why-us-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.why-us-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.why-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 28px;
  border: 1px solid var(--gray-200);
}

.why-card .check {
  color: var(--primary);
  font-size: 1.3rem;
  margin-bottom: 12px;
  font-weight: 700;
}

.why-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}

.why-card p {
  font-size: 0.9rem;
  color: var(--gray-600);
  line-height: 1.6;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-content h1 { font-size: 2.2rem; }
  .hero-stats { grid-template-columns: repeat(4, 1fr); }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .advantage-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .product-detail-inner { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .about-intro { grid-template-columns: 1fr; }
  .why-us-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .menu-toggle { display: flex; }
  .nav {
    display: none;
    position: fixed;
    top: 70px; left: 0; right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 16px;
    box-shadow: var(--shadow-lg);
    gap: 0;
  }
  .nav.open { display: flex; }
  .nav a {
    padding: 12px 16px;
    border-radius: 0;
  }
  .nav-cta { margin-left: 0; margin-top: 8px; }
  .nav-dropdown-menu {
    position: static;
    box-shadow: none;
    border: none;
    padding-left: 16px;
  }
  .nav-sub-menu {
    position: static;
    box-shadow: none;
    border: none;
    padding-left: 16px;
    max-height: none;
    overflow: visible;
  }
  .nav-arrow { display: none; }
  .hero-content h1 { font-size: 1.8rem; }
  .hero-has-media .hero-content { margin-left: 16px; margin-right: 16px; text-align: center; }
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .product-grid { grid-template-columns: 1fr; }
  .advantage-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .section { padding: 48px 16px; }
  .section-header { margin-bottom: 36px; }
  .section-header h2 { font-size: 1.5rem; }
  .why-us-grid { grid-template-columns: 1fr; }
}