/* ========================================
   ASPER 阿斯珀尔 - 佛山斯珀尔新型材料有限公司
   Professional Corporate Website Styles
   ======================================== */

:root {
  --primary: #0c1e3a;
  --primary-light: #1a3a5c;
  --primary-dark: #081428;
  --secondary: #c9a96e;
  --secondary-light: #d4b97d;
  --accent: #00b4d8;
  --bg: #f8f9fa;
  --bg-dark: #eef1f5;
  --white: #ffffff;
  --text: #1a1a2e;
  --text-light: #4a5568;
  --text-muted: #718096;
  --border: #e2e8f0;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow: 0 4px 20px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.15);
  --radius: 8px;
  --radius-lg: 16px;
  --transition: all 0.3s ease;
  --font: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; display: block; }

/* ===== HEADER ===== */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.header.scrolled {
  box-shadow: var(--shadow);
}
.header-inner {
  max-width: 1400px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 40px; height: 72px;
}
.logo {
  display: flex; align-items: center; gap: 12px;
}
.logo-icon {
  width: 42px; height: 42px; background: var(--primary);
  border-radius: var(--radius); display: flex; align-items: center; justify-content: center;
  color: var(--secondary); font-weight: 800; font-size: 18px;
}
.logo-text { display: flex; flex-direction: column; }
.logo-name { font-size: 18px; font-weight: 700; color: var(--primary); line-height: 1.2; }
.logo-sub { font-size: 11px; color: var(--text-muted); letter-spacing: 1px; }

.nav { display: flex; gap: 4px; }
.nav a {
  padding: 8px 16px; border-radius: var(--radius);
  font-size: 15px; font-weight: 500; color: var(--text-light);
  position: relative;
}
.nav a:hover, .nav a.active {
  color: var(--primary);
  background: rgba(12,30,58,0.05);
}
.nav a.active::after {
  content: ''; position: absolute; bottom: 2px; left: 16px; right: 16px;
  height: 2px; background: var(--secondary); border-radius: 2px;
}

.header-actions { display: flex; align-items: center; gap: 16px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 24px; border-radius: var(--radius);
  font-size: 14px; font-weight: 600; cursor: pointer;
  border: none; transition: var(--transition);
}
.btn-primary {
  background: var(--primary); color: var(--white);
}
.btn-primary:hover {
  background: var(--primary-light); transform: translateY(-2px);
  box-shadow: var(--shadow);
}
.btn-secondary {
  background: var(--secondary); color: var(--primary-dark);
}
.btn-secondary:hover {
  background: var(--secondary-light); transform: translateY(-2px);
}
.btn-outline {
  background: transparent; color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-outline:hover {
  background: var(--primary); color: var(--white);
}
.btn-sm { padding: 6px 16px; font-size: 13px; }
.btn-lg { padding: 14px 32px; font-size: 16px; }

/* Language Switcher */
.lang-switcher select {
  padding: 4px 8px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--white); color: var(--text); font-size: 12px; font-family: var(--font);
  cursor: pointer; outline: none; max-width: 140px;
}
.lang-switcher select:hover { border-color: var(--secondary); }
.lang-switcher select:focus { border-color: var(--primary); box-shadow: 0 0 0 2px rgba(12,30,58,0.1); }

.lang-switcher-mobile {
  padding: 12px 0; border-bottom: 1px solid #eee; margin-bottom: 8px;
}
.lang-switcher-mobile select {
  padding: 8px 12px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--white); color: var(--text); font-size: 14px; font-family: var(--font);
  cursor: pointer; outline: none; width: 100%;
}

@media (max-width: 768px) {
  .lang-switcher select { max-width: 100px; font-size: 11px; padding: 4px 6px; }
}

.mobile-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 8px;
}
.mobile-toggle span {
  display: block; width: 24px; height: 2px;
  background: var(--primary); transition: var(--transition);
}
.mobile-nav {
  display: none; position: fixed; top: 72px; left: 0; right: 0;
  background: var(--white); box-shadow: var(--shadow-lg);
  padding: 20px; z-index: 999; border-top: 1px solid var(--border);
}
.mobile-nav.active { display: block; }
.mobile-nav a {
  display: block; padding: 12px 0;
  font-size: 16px; color: var(--text); border-bottom: 1px solid var(--border);
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  background: var(--primary);
  position: relative; overflow: hidden;
  padding-top: 72px;
}
.hero::before {
  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");
  opacity: 1;
}
.hero-gradient {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(12,30,58,0.95) 0%, rgba(26,58,92,0.85) 50%, rgba(12,30,58,0.7) 100%);
}
.hero-content {
  position: relative; z-index: 2;
  flex: 0 1 640px; max-width: 640px; padding: 60px 40px 60px 80px;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(201,169,110,0.15); color: var(--secondary);
  padding: 8px 16px; border-radius: 50px; font-size: 13px; font-weight: 600;
  margin-bottom: 24px; border: 1px solid rgba(201,169,110,0.3);
}
.hero h1 {
  font-size: clamp(34px, 4.4vw, 56px); font-weight: 800; color: var(--white);
  line-height: 1.2; margin-bottom: 20px; white-space: nowrap;
  letter-spacing: -0.5px;
}
.hero h1 span { color: var(--secondary); }
.hero-desc {
  font-size: 18px; color: rgba(255,255,255,0.7);
  max-width: 500px; margin-bottom: 36px;
}
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-btns .btn-primary {
  background: var(--secondary); color: var(--primary-dark);
}
.hero-btns .btn-primary:hover { background: var(--secondary-light); }
.hero-btns .btn-outline {
  border-color: rgba(255,255,255,0.4); color: var(--white);
}
.hero-btns .btn-outline:hover {
  background: var(--white); color: var(--primary); border-color: var(--white);
}

.hero-stats {
  display: flex; gap: 40px; margin-top: 48px;
  padding-top: 32px; border-top: 1px solid rgba(255,255,255,0.1);
}
.hero-stat h3 { font-size: 36px; font-weight: 800; color: var(--secondary); }
.hero-stat p { font-size: 14px; color: rgba(255,255,255,0.6); }

.hero-images {
  position: relative; display: grid; grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.hero-img {
  border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-lg); position: relative;
}
.hero-img img { width: 100%; height: 100%; object-fit: cover; }
.hero-img-main { grid-row: span 2; height: 440px; }
.hero-img-sub { height: 212px; }
.hero-img-tag {
  position: absolute; bottom: 16px; left: 16px;
  background: rgba(12,30,58,0.85); backdrop-filter: blur(10px);
  color: var(--white); padding: 8px 16px; border-radius: var(--radius);
  font-size: 13px; font-weight: 600;
}

/* ===== SECTIONS ===== */
.section {
  padding: 100px 40px; max-width: 1400px; margin: 0 auto;
}
.section-header {
  text-align: center; max-width: 700px; margin: 0 auto 60px;
}
.section-label {
  display: inline-block;
  color: var(--secondary); font-size: 13px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 2px; margin-bottom: 12px;
}
.section-title {
  font-size: 40px; font-weight: 800; color: var(--primary);
  margin-bottom: 16px; line-height: 1.2;
}
.section-subtitle {
  font-size: 17px; color: var(--text-muted);
}

/* ===== ABOUT ===== */
.about-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center;
}
.about-images {
  position: relative;
}
.about-img-main {
  border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.about-img-main img { width: 100%; height: 480px; object-fit: cover; }
.about-img-float {
  position: absolute; bottom: -30px; right: -20px;
  width: 280px; border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-lg); border: 4px solid var(--white);
}
.about-img-float img { width: 100%; height: 180px; object-fit: cover; }
.about-img-tag {
  position: absolute; top: 20px; left: -20px;
  background: var(--secondary); color: var(--primary-dark);
  padding: 12px 20px; border-radius: var(--radius);
  font-size: 14px; font-weight: 700;
  box-shadow: var(--shadow);
}
.about-content h3 {
  font-size: 32px; font-weight: 700; color: var(--primary); margin-bottom: 20px;
}
.about-content p {
  font-size: 16px; color: var(--text-light); margin-bottom: 16px;
}
.about-features {
  display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 32px;
}
.about-feature {
  display: flex; gap: 16px; padding: 20px;
  background: var(--bg); border-radius: var(--radius);
  border: 1px solid var(--border);
}
.about-feature-icon {
  width: 48px; height: 48px; min-width: 48px;
  background: var(--primary); border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  color: var(--secondary); font-size: 20px;
}
.about-feature h4 { font-size: 16px; font-weight: 700; margin-bottom: 4px; }
.about-feature p { font-size: 13px; color: var(--text-muted); margin: 0; }

/* ===== PRODUCTS ===== */
.products-section { background: var(--bg); }
.products-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px;
}
.product-card {
  background: var(--white); border-radius: var(--radius-lg);
  overflow: hidden; box-shadow: var(--shadow-sm);
  border: 1px solid var(--border); transition: var(--transition);
  cursor: pointer;
}
.product-card:hover {
  transform: translateY(-8px); box-shadow: var(--shadow-lg);
  border-color: var(--secondary);
}
.product-img-wrap {
  position: relative; overflow: hidden; height: 240px;
}
.product-img-wrap img {
  width: 100%; height: 100%; object-fit: cover;
  transition: var(--transition);
}
.product-card:hover .product-img-wrap img { transform: scale(1.05); }
.product-img-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(12,30,58,0.8), transparent);
  display: flex; align-items: flex-end; padding: 20px;
  opacity: 0; transition: var(--transition);
}
.product-card:hover .product-img-overlay { opacity: 1; }
.product-img-overlay span {
  color: var(--white); font-size: 14px; font-weight: 600;
  display: flex; align-items: center; gap: 6px;
}
.product-info { padding: 24px; }
.product-info h3 {
  font-size: 20px; font-weight: 700; color: var(--primary); margin-bottom: 8px;
}
.product-info p {
  font-size: 14px; color: var(--text-muted); margin-bottom: 16px;
  line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2;
  -webkit-box-orient: vertical; overflow: hidden;
}
.product-meta {
  display: flex; justify-content: space-between; align-items: center;
}
.product-tag {
  display: inline-block; padding: 4px 12px;
  background: rgba(201,169,110,0.12); color: var(--secondary);
  border-radius: 50px; font-size: 12px; font-weight: 600;
}
.product-link {
  font-size: 14px; font-weight: 600; color: var(--primary);
  display: flex; align-items: center; gap: 4px;
}
.product-link:hover { color: var(--secondary); }

/* ===== CATEGORY PAGE ===== */
.category-hero {
  background: var(--primary); padding: 140px 40px 60px;
  position: relative; overflow: hidden;
}
.category-hero::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(12,30,58,0.9) 0%, rgba(26,58,92,0.7) 100%);
}
.category-hero-content {
  position: relative; z-index: 2; max-width: 1400px; margin: 0 auto;
}
.category-hero h1 {
  font-size: 42px; font-weight: 800; color: var(--white); margin-bottom: 12px;
}
.category-hero p { font-size: 17px; color: rgba(255,255,255,0.7); max-width: 600px; }
.category-hero .breadcrumb {
  display: flex; gap: 12px; align-items: center;
  margin-bottom: 24px; font-size: 14px; color: rgba(255,255,255,0.5);
}
.category-hero .breadcrumb a:hover { color: var(--secondary); }
.category-hero .breadcrumb .sep { color: rgba(255,255,255,0.3); }

.category-toolbar {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 32px; flex-wrap: wrap; gap: 16px;
}
.category-count { font-size: 14px; color: var(--text-muted); }
.category-count strong { color: var(--primary); }

.product-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.gallery-item {
  background: var(--white); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow-sm);
  border: 1px solid var(--border); cursor: pointer;
  transition: var(--transition);
}
.gallery-item:hover {
  transform: translateY(-4px); box-shadow: var(--shadow);
  border-color: var(--secondary);
}
.gallery-item-img {
  height: 200px; overflow: hidden; position: relative;
}
.gallery-item-img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: var(--transition);
}
.gallery-item:hover .gallery-item-img img { transform: scale(1.05); }
.gallery-item-overlay {
  position: absolute; inset: 0;
  background: rgba(12,30,58,0.6);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transition: var(--transition);
}
.gallery-item:hover .gallery-item-overlay { opacity: 1; }
.gallery-item-overlay span {
  background: var(--white); color: var(--primary);
  padding: 8px 20px; border-radius: 50px;
  font-size: 13px; font-weight: 600;
}
.gallery-item-info { padding: 16px; }
.gallery-item-info h4 {
  font-size: 15px; font-weight: 600; color: var(--primary);
  margin-bottom: 4px;
}
.gallery-item-info p {
  font-size: 13px; color: var(--text-muted);
}

/* Pagination */
.pagination {
  display: flex; justify-content: center; gap: 8px; margin-top: 48px;
}
.pagination button {
  padding: 8px 16px; border: 1px solid var(--border);
  background: var(--white); border-radius: var(--radius);
  font-size: 14px; cursor: pointer; transition: var(--transition);
  color: var(--text-light);
}
.pagination button:hover, .pagination button.active {
  background: var(--primary); color: var(--white); border-color: var(--primary);
}
.pagination button:disabled { opacity: 0.4; cursor: not-allowed; }

/* ===== PRODUCT DETAIL ===== */
.product-detail {
  padding-top: 100px;
}
.product-detail-inner {
  max-width: 1400px; margin: 0 auto; padding: 40px;
}
.product-detail-breadcrumb {
  display: flex; gap: 12px; align-items: center;
  margin-bottom: 32px; font-size: 14px; color: var(--text-muted);
}
.product-detail-breadcrumb a:hover { color: var(--primary); }
.product-detail-main {
  display: grid; grid-template-columns: 1fr 380px; gap: 48px;
}
.product-detail-image {
  background: var(--bg); border-radius: var(--radius-lg);
  padding: 24px; text-align: center;
  border: 1px solid var(--border);
}
.product-detail-image img {
  max-width: 100%; max-height: 700px;
  border-radius: var(--radius); box-shadow: var(--shadow);
}
.product-detail-sidebar {
  display: flex; flex-direction: column; gap: 24px;
}
.product-detail-title {
  font-size: 28px; font-weight: 700; color: var(--primary);
  margin-bottom: 8px;
}
.product-detail-subtitle {
  font-size: 15px; color: var(--text-muted); margin-bottom: 24px;
}
.specs-table {
  width: 100%; border-collapse: collapse;
  background: var(--white); border-radius: var(--radius);
  overflow: hidden; border: 1px solid var(--border);
}
.specs-table th, .specs-table td {
  padding: 14px 20px; text-align: left; font-size: 14px;
  border-bottom: 1px solid var(--border);
}
.specs-table th {
  background: var(--bg); color: var(--text-light); font-weight: 600;
  width: 120px;
}
.specs-table td { color: var(--text); font-weight: 500; }
.specs-table tr:last-child th, .specs-table tr:last-child td { border-bottom: none; }

.product-actions {
  display: flex; flex-direction: column; gap: 12px;
}
.product-actions .btn { justify-content: center; width: 100%; }

.related-products { margin-top: 48px; }
.related-products h3 {
  font-size: 24px; font-weight: 700; color: var(--primary); margin-bottom: 24px;
}
.related-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}

/* ===== ADVANTAGES ===== */
.advantages-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.advantage-card {
  background: var(--white); padding: 36px 28px;
  border-radius: var(--radius-lg); text-align: center;
  border: 1px solid var(--border); transition: var(--transition);
}
.advantage-card:hover {
  transform: translateY(-6px); box-shadow: var(--shadow-lg);
  border-color: var(--secondary);
}
.advantage-icon {
  width: 64px; height: 64px; margin: 0 auto 20px;
  background: var(--primary); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--secondary); font-size: 28px;
}
.advantage-card h3 {
  font-size: 18px; font-weight: 700; color: var(--primary); margin-bottom: 10px;
}
.advantage-card p {
  font-size: 14px; color: var(--text-muted); line-height: 1.6;
}

/* ===== APPLICATIONS ===== */
.apps-section { background: var(--primary); position: relative; overflow: hidden; }
.apps-section .section-title, .apps-section .section-label { color: var(--white); }
.apps-section .section-subtitle { color: rgba(255,255,255,0.6); }
.apps-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.app-item {
  background: rgba(255,255,255,0.05); backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.1); border-radius: var(--radius-lg);
  padding: 32px; transition: var(--transition);
}
.app-item:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--secondary); transform: translateY(-4px);
}
.app-item-icon {
  width: 56px; height: 56px;
  background: var(--secondary); border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px; color: var(--primary-dark); font-size: 24px;
}
.app-item h3 { font-size: 18px; font-weight: 700; color: var(--white); margin-bottom: 10px; }
.app-item p { font-size: 14px; color: rgba(255,255,255,0.6); line-height: 1.6; }

/* ===== CASES ===== */
.cases-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.case-card {
  border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-sm); border: 1px solid var(--border);
  transition: var(--transition);
}
.case-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.case-img { height: 240px; overflow: hidden; }
.case-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.case-card:hover .case-img img { transform: scale(1.05); }
.case-info { padding: 24px; }
.case-info h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.case-info p { font-size: 14px; color: var(--text-muted); }
.case-tag {
  display: inline-block; margin-top: 12px;
  padding: 4px 12px; background: var(--bg);
  border-radius: 50px; font-size: 12px; color: var(--text-muted);
}

/* ===== CONTACT ===== */
.contact-section { background: var(--bg); }
.contact-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px;
}
.contact-info h3 {
  font-size: 28px; font-weight: 700; color: var(--primary); margin-bottom: 24px;
}
.contact-item {
  display: flex; gap: 16px; margin-bottom: 24px;
}
.contact-item-icon {
  width: 48px; height: 48px; min-width: 48px;
  background: var(--primary); border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  color: var(--secondary); font-size: 20px;
}
.contact-item h4 { font-size: 15px; font-weight: 700; margin-bottom: 4px; }
.contact-item p { font-size: 14px; color: var(--text-muted); }
.contact-form {
  background: var(--white); padding: 40px;
  border-radius: var(--radius-lg); box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.contact-form h3 {
  font-size: 24px; font-weight: 700; color: var(--primary); margin-bottom: 24px;
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block; font-size: 14px; font-weight: 600;
  color: var(--text); margin-bottom: 8px;
}
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 12px 16px;
  border: 1px solid var(--border); border-radius: var(--radius);
  font-size: 15px; font-family: var(--font); color: var(--text);
  transition: var(--transition); background: var(--white);
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: none; border-color: var(--secondary);
  box-shadow: 0 0 0 3px rgba(201,169,110,0.15);
}
.form-group textarea { min-height: 120px; resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* ===== PARTNERS ===== */
.partners-section {
  background: var(--bg); overflow: hidden;
}
.partners-tabs {
  display: flex; justify-content: center; gap: 8px; margin-bottom: 40px;
  flex-wrap: wrap;
}
.partners-tab {
  padding: 10px 24px; border: 1px solid var(--border);
  background: var(--white); border-radius: 50px;
  font-size: 14px; font-weight: 600; cursor: pointer;
  transition: var(--transition); color: var(--text-light);
  font-family: var(--font);
}
.partners-tab:hover {
  border-color: var(--secondary); color: var(--secondary);
}
.partners-tab.active {
  background: var(--primary); color: var(--white); border-color: var(--primary);
}
.partners-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 4px;
}
.partner-card {
  background: var(--white); border: 1px solid var(--border);
  padding: 20px 12px; display: flex;
  align-items: center; justify-content: center;
  transition: var(--transition); cursor: default;
  position: relative; overflow: hidden;
  min-height: 90px;
}
.partner-card::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(12,30,58,0.03), rgba(201,169,110,0.06));
  opacity: 0; transition: var(--transition);
}
.partner-card:hover {
  border-color: var(--secondary);
  box-shadow: var(--shadow);
  transform: translateY(-2px); z-index: 2;
}
.partner-card:hover::before { opacity: 1; }
.partner-logo {
  text-align: center;
  position: relative; z-index: 1;
}
.partner-logo .partner-icon {
  width: 44px; height: 44px; margin: 0 auto 8px;
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; font-weight: 800; color: var(--white);
  letter-spacing: 0;
}
.partner-logo .partner-img {
  width: auto; max-width: 140px; height: 48px;
  object-fit: contain; margin: 0 auto 8px;
  display: block; border-radius: 4px;
}
.partner-logo .partner-name {
  font-size: 12px; font-weight: 600; color: var(--text-light);
  line-height: 1.4; max-width: 100px;
}
.partner-logo .partner-cat {
  font-size: 10px; color: var(--text-muted);
  margin-top: 2px;
}
.partner-icon.c1 { background: var(--primary); }
.partner-icon.c2 { background: #1a5276; }
.partner-icon.c3 { background: #2c3e50; }
.partner-icon.c4 { background: #34495e; }
.partner-icon.c5 { background: #1a3a4a; }
.partner-icon.c6 { background: #4a6741; }
.partner-icon.c7 { background: #7d6b3e; }
.partner-icon.c8 { background: #6b3a5b; }
.partner-icon.c9 { background: #3a5a6b; }
.partner-icon.c10 { background: #5a3a2b; }

.partners-scroll {
  margin-top: 32px; overflow: hidden;
  position: relative;
}
.partners-scroll-track {
  display: flex; gap: 4px;
  animation: partnersScroll 60s linear infinite;
}
.partners-scroll-track:hover { animation-play-state: paused; }
.partners-scroll .partner-card {
  min-width: 160px; flex-shrink: 0;
}
@keyframes partnersScroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* Partners bottom banner */
.partners-stats-bar {
  display: flex; justify-content: center; gap: 60px;
  margin-top: 48px; padding-top: 32px;
  border-top: 1px solid var(--border); flex-wrap: wrap;
}
.partners-stat {
  text-align: center;
}
.partners-stat h4 {
  font-size: 32px; font-weight: 800; color: var(--secondary);
}
.partners-stat p {
  font-size: 13px; color: var(--text-muted); margin-top: 4px;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--primary-dark); color: rgba(255,255,255,0.7);
  padding: 80px 40px 30px;
}
.footer-inner { max-width: 1440px; max-width: 1400px; margin: 0 auto; }
.footer-grid {
  display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 36px;
  margin-bottom: 48px;
}
.footer-brand .logo-name { color: var(--white); font-size: 22px; }
.footer-brand p {
  font-size: 14px; line-height: 1.7; margin-top: 16px;
  color: rgba(255,255,255,0.6);
}
.footer-brand .footer-social {
  display: flex; gap: 12px; margin-top: 20px;
}
.footer-social a {
  width: 40px; height: 40px; border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: flex; align-items: center; justify-content: center;
  color: var(--white); font-size: 16px; transition: var(--transition);
}
.footer-social a:hover { background: var(--secondary); color: var(--primary-dark); }

.footer-col h4 {
  font-size: 16px; font-weight: 700; color: var(--white); margin-bottom: 20px;
}
.footer-col a {
  display: block; padding: 6px 0; font-size: 14px;
  color: rgba(255,255,255,0.6);
}
.footer-col a:hover { color: var(--secondary); padding-left: 4px; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px; display: flex;
  justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px;
}
.footer-bottom p { font-size: 13px; color: rgba(255,255,255,0.4); }

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(40px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
.animate {
  opacity: 0; animation: fadeInUp 0.7s 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; }
.animate-delay-5 { animation-delay: 0.5s; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1200px) {
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .advantages-grid { grid-template-columns: repeat(2, 1fr); }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 992px) {
  .hero-content { grid-template-columns: 1fr; text-align: center; }
  .hero h1 { font-size: 40px; }
  .hero-desc { margin: 0 auto 36px; }
  .hero-stats { justify-content: center; }
  .hero-images { display: none; }
  .about-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .product-detail-main { grid-template-columns: 1fr; }
  .apps-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .partners-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 768px) {
  .nav { display: none; }
  .mobile-toggle { display: flex; }
  .header-inner { padding: 0 20px; }
  .section { padding: 60px 20px; }
  .hero h1 { font-size: 32px; }
  .products-grid { grid-template-columns: 1fr; }
  .advantages-grid { grid-template-columns: 1fr; }
  .apps-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .about-features { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }
  .category-hero h1 { font-size: 32px; }
  .product-gallery { grid-template-columns: repeat(2, 1fr); }
  .partners-grid { grid-template-columns: repeat(3, 1fr); }
  .partners-tabs { gap: 4px; }
  .partners-tab { padding: 8px 16px; font-size: 12px; }
}

@media (max-width: 480px) {
  .product-gallery { grid-template-columns: 1fr; }
  .hero-stats { flex-direction: column; gap: 20px; }
  .partners-grid { grid-template-columns: repeat(3, 1fr); }
  .partners-stats-bar { gap: 24px; }
  .partners-scroll .partner-card { min-width: 120px; }
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ===== LOADING ===== */
.loading {
  display: flex; justify-content: center; align-items: center; padding: 60px;
}
.loading-spinner {
  width: 40px; height: 40px; border: 3px solid var(--border);
  border-top-color: var(--secondary); border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* =====================================================
   ✅ 2026-08-10 国际大牌 B2B 质感升级（覆盖层）
   白底大图 · 充足留白 · hover 光影 · 统一深藏青色调
   ===================================================== */

/* ---- 产品分类网格：大牌卡片 ---- */
.product-gallery {
  gap: 30px;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}
.gallery-item {
  background: #ffffff;
  border-radius: 18px;
  border: 1px solid #eef0f3;
  box-shadow: 0 2px 10px rgba(12, 30, 58, 0.05);
  transition: transform 0.4s cubic-bezier(0.22, 0.61, 0.36, 1), box-shadow 0.4s ease, border-color 0.4s ease;
}
.gallery-item:hover {
  transform: translateY(-8px);
  box-shadow: 0 24px 48px rgba(12, 30, 58, 0.14);
  border-color: rgba(12, 30, 58, 0.1);
}
.gallery-item-img {
  height: 300px;
  background: linear-gradient(180deg, #f6f7f9 0%, #fbfbfc 100%);
  display: flex; align-items: center; justify-content: center;
  padding: 32px;
}
.gallery-item-img img {
  width: auto; max-width: 100%; max-height: 100%;
  object-fit: contain;
  transition: transform 0.5s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.gallery-item:hover .gallery-item-img img { transform: scale(1.06); }
.gallery-item-overlay { display: none; }
.gallery-item-info { padding: 22px 24px 26px; text-align: center; }
.gallery-item-info .item-series {
  font-size: 11px; font-weight: 600; color: #9aa4b2;
  text-transform: uppercase; letter-spacing: 1.6px; margin-bottom: 8px;
}
.gallery-item-info h4 {
  font-size: 16px; font-weight: 600; color: #0c1e3a;
  letter-spacing: 0.2px; margin-bottom: 6px;
  transition: color 0.3s ease;
}
.gallery-item:hover .gallery-item-info h4 { color: #1a3a5c; }
.gallery-item-info p { font-size: 12px; color: #9aa4b2; letter-spacing: 0.3px; }

/* ---- 分类页头部 ---- */
.category-hero { background: linear-gradient(135deg, #0c1e3a 0%, #16304f 55%, #1c3f66 100%); }
.category-count { font-size: 13px; color: #6b7280; letter-spacing: 0.5px; }
.category-count strong { color: #0c1e3a; font-size: 16px; }

/* ---- 分页 ---- */
.pagination { margin-top: 60px; gap: 10px; }
.pagination button {
  min-width: 44px; height: 44px; padding: 0 18px;
  border: 1px solid #e5e8ec; border-radius: 10px;
  font-size: 14px; color: #4b5563; background: #fff;
  transition: all 0.25s ease;
}
.pagination button:hover { border-color: #0c1e3a; color: #0c1e3a; background: #f6f7f9; }
.pagination button.active { background: #0c1e3a; border-color: #0c1e3a; color: #fff; }

/* ---- 产品详情页 ---- */
.product-detail-inner { max-width: 1320px; padding: 48px 40px; }
.product-detail-main { grid-template-columns: minmax(0, 1fr) 400px; gap: 56px; }
.product-detail-image {
  background: linear-gradient(180deg, #f6f7f9 0%, #fbfbfc 100%);
  border-radius: 20px; border: 1px solid #eef0f3;
  padding: 48px; display: flex; align-items: center; justify-content: center;
}
.product-detail-image img {
  max-width: 100%; max-height: 640px; width: auto;
  object-fit: contain; box-shadow: none; border-radius: 0;
}
.product-detail-title { font-size: 32px; font-weight: 700; color: #0c1e3a; letter-spacing: 0.3px; }
.product-detail-subtitle { font-size: 15px; color: #6b7280; }
.product-tag {
  background: rgba(12, 30, 58, 0.06); color: #1a3a5c;
  font-size: 12px; font-weight: 600; letter-spacing: 0.8px;
  padding: 5px 14px; border-radius: 30px;
}
.specs-table {
  border-radius: 14px; overflow: hidden; border: 1px solid #eef0f3;
}
.specs-table th { background: #f6f7f9; color: #6b7280; font-weight: 500; }
.specs-table td { color: #1f2937; font-weight: 500; }

/* ---- 详情页上下页导航 ---- */
#productNav .btn { border-radius: 12px; padding: 14px 22px; font-size: 14px; }
#productNav small { font-size: 12px; opacity: 0.75; }

/* ---- 相关产品 ---- */
.related-products h3 { font-size: 20px; font-weight: 700; color: #0c1e3a; margin-bottom: 24px; }

/* ---- 产品中心入口卡片 ---- */
.product-card {
  border-radius: 18px; border: 1px solid #eef0f3;
  box-shadow: 0 2px 10px rgba(12, 30, 58, 0.05);
  transition: transform 0.4s cubic-bezier(0.22, 0.61, 0.36, 1), box-shadow 0.4s ease;
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(12, 30, 58, 0.12);
}

/* ---- 首页精选产品 Showcase（2026-08-10）---- */
.featured-section { background: #ffffff; padding-top: 90px; }
.featured-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 24px;
  margin-top: 8px;
}
.featured-item {
  display: block; text-decoration: none;
  background: #f6f7f9; border-radius: 16px;
  padding: 20px 20px 16px;
  transition: all 0.35s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.featured-item:hover {
  background: #ffffff;
  transform: translateY(-6px);
  box-shadow: 0 16px 36px rgba(12, 30, 58, 0.12);
}
.featured-img { height: 150px; display: flex; align-items: center; justify-content: center; margin-bottom: 12px; }
.featured-img img { max-width: 100%; max-height: 100%; object-fit: contain; }
.featured-info { text-align: center; }
.featured-series {
  display: block; font-size: 10px; font-weight: 600; color: #9aa4b2;
  text-transform: uppercase; letter-spacing: 1.4px; margin-bottom: 4px;
}
.featured-info h4 { font-size: 13px; font-weight: 600; color: #0c1e3a; margin: 0; }

/* ========================================
   2026-08-11 NEW: 国际品牌风 · 7 大分类 + 图册下载
   ======================================== */

/* HERO 大图沉浸 */
.hero { position: relative; min-height: 100vh; padding-top: 72px; overflow: hidden; display: flex; align-items: center; color: #fff; }
.hero-bg { position: absolute; inset: 0; z-index: 0; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; filter: brightness(0.55) contrast(1.15) saturate(0.75) blur(1px); -webkit-filter: brightness(0.55) contrast(1.15) saturate(0.75) blur(1px); }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(12,30,58,0.85) 0%, rgba(12,30,58,0.55) 50%, rgba(12,30,58,0.3) 100%); }
.hero-content { position: relative; z-index: 1; max-width: 1400px; margin: 0 auto; padding: 80px 40px 120px; width: 100%; }
.hero-tagline { display: inline-block; padding: 6px 14px; background: rgba(201,169,110,0.18); border: 1px solid rgba(201,169,110,0.4); color: var(--secondary); font-size: 12px; letter-spacing: 4px; font-weight: 500; margin-bottom: 28px; border-radius: 4px; }
.hero h1 { font-size: clamp(40px, 6vw, 88px); font-weight: 700; line-height: 1.05; letter-spacing: -1px; margin-bottom: 18px; color: #fff; }
.hero-sub-cn { font-size: clamp(20px, 2.5vw, 32px); font-weight: 300; letter-spacing: 4px; opacity: 0.85; margin-bottom: 24px; color: var(--secondary); }
.hero-desc { font-size: 16px; line-height: 1.85; max-width: 720px; margin-bottom: 36px; opacity: 0.88; color: #f0f0f0; }
.hero-btns { display: flex; gap: 16px; margin-bottom: 64px; flex-wrap: wrap; }
.hero-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; max-width: 720px; padding-top: 32px; border-top: 1px solid rgba(255,255,255,0.18); }
.hero-stat h3 { font-size: 36px; font-weight: 200; color: var(--secondary); letter-spacing: -1px; line-height: 1; margin-bottom: 6px; }
.hero-stat h3 sup { font-size: 18px; vertical-align: super; opacity: 0.7; }
.hero-stat p { font-size: 13px; opacity: 0.7; letter-spacing: 1px; }
.hero-scroll { position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%); color: #fff; opacity: 0.6; font-size: 11px; letter-spacing: 4px; animation: bounce 2s infinite; z-index: 2; }
@keyframes bounce { 0%,100% { transform: translateX(-50%) translateY(0); } 50% { transform: translateX(-50%) translateY(8px); } }
.btn-outline-light { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,0.6); padding: 12px 16px; }
.btn-outline-light:hover { background: #fff; color: var(--primary); border-color: #fff; }
.btn-light { background: #fff; color: var(--primary); padding: 12px 16px; border: 0; }
.btn-light:hover { background: var(--secondary); color: #fff; }

.section { max-width: 1400px; margin: 0 auto; padding: 100px 40px; position: relative; }
.section-dark { background: linear-gradient(180deg, #0c1e3a 0%, #16283c 100%); color: #fff; max-width: none; padding: 100px 40px; }
.section-dark .section-title { color: #fff; }
.section-dark .section-subtitle { color: rgba(255,255,255,0.7); }
.section-alt { background: var(--bg); max-width: none; padding: 100px 40px; }
.section-alt .section-header { max-width: 1400px; margin: 0 auto 56px; }

.section-header { text-align: center; margin-bottom: 64px; }
.section-label { display: inline-block; font-size: 11px; letter-spacing: 6px; color: var(--secondary); font-weight: 600; margin-bottom: 16px; text-transform: uppercase; }
.section-title { font-size: clamp(28px, 3.5vw, 48px); font-weight: 700; color: var(--primary); letter-spacing: -0.5px; margin-bottom: 14px; line-height: 1.15; }
.section-subtitle { font-size: 16px; color: var(--text-light); max-width: 720px; margin: 0 auto; line-height: 1.7; }

.cat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.cat-card { background: #fff; border-radius: 4px; overflow: hidden; transition: var(--transition); border: 1px solid var(--border); display: block; }
.cat-card:hover { transform: translateY(-6px); box-shadow: 0 20px 50px rgba(12,30,58,0.18); border-color: var(--secondary); }
.cat-img { position: relative; aspect-ratio: 16/10; overflow: hidden; }
.cat-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.7s ease; }
.cat-card:hover .cat-img img { transform: scale(1.05); }
.cat-num { position: absolute; top: 16px; left: 16px; font-size: 13px; font-weight: 700; color: #fff; background: rgba(12,30,58,0.85); padding: 4px 10px; letter-spacing: 2px; }
.cat-info { padding: 24px 24px 28px; }
.cat-name-cn { font-size: 22px; font-weight: 700; color: var(--primary); margin-bottom: 4px; }
.cat-name-en { font-size: 12px; color: var(--secondary); letter-spacing: 1.5px; margin-bottom: 14px; text-transform: uppercase; }
.cat-tags { font-size: 13px; color: var(--text-light); margin-bottom: 18px; line-height: 1.5; }
.cat-meta { display: flex; align-items: center; justify-content: space-between; padding-top: 14px; border-top: 1px solid var(--border); font-size: 12px; color: var(--text-muted); letter-spacing: 1px; }
.cat-arrow { color: var(--secondary); font-size: 18px; transition: transform 0.3s; }
.cat-card:hover .cat-arrow { transform: translateX(6px); }
.cat-card-wide { grid-column: span 1; }

.dl-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; max-width: 1400px; margin: 0 auto; }
.dl-card { background: #fff; border-radius: 4px; overflow: hidden; transition: var(--transition); color: var(--text); display: block; border: 1px solid rgba(255,255,255,0.08); }
.dl-card:hover { transform: translateY(-6px); box-shadow: 0 24px 60px rgba(201,169,110,0.25); border-color: var(--secondary); }
.dl-cover { aspect-ratio: 4/3; overflow: hidden; background: var(--primary); }
.dl-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.7s; }
.dl-card:hover .dl-cover img { transform: scale(1.05); }
.dl-info { padding: 18px 20px 22px; }
.dl-title { font-size: 15px; font-weight: 700; color: var(--primary); margin-bottom: 4px; line-height: 1.3; }
.dl-en { font-size: 11px; color: var(--text-muted); letter-spacing: 0.5px; margin-bottom: 12px; line-height: 1.4; }
.dl-spec { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.dl-spec-item { font-size: 11px; background: var(--bg); color: var(--text-light); padding: 3px 8px; border-radius: 2px; }
.dl-card:hover .dl-spec-item { background: rgba(201,169,110,0.15); color: var(--secondary); }
.dl-btn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 14px; background: var(--primary); color: #fff; font-size: 12px; font-weight: 600; letter-spacing: 1px; transition: var(--transition); }
.dl-card:hover .dl-btn { background: var(--secondary); }
.dl-cta { text-align: center; margin-top: 56px; max-width: 1400px; margin-left: auto; margin-right: auto; }
.dl-cta p { opacity: 0.7; margin-bottom: 20px; }

.about-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 80px; align-items: center; }
.about-content .section-title { text-align: left; margin: 0 0 20px; }
.about-content p { color: var(--text-light); margin-bottom: 18px; line-height: 1.85; font-size: 15px; }
.about-features { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin-top: 32px; }
.about-feature { display: flex; gap: 12px; align-items: flex-start; padding: 12px 16px; background: var(--bg); border-radius: 4px; border-left: 3px solid var(--secondary); }
.about-feature-icon { width: 28px; height: 28px; background: var(--secondary); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 14px; flex-shrink: 0; font-weight: 700; }
.about-feature h4 { font-size: 14px; font-weight: 700; color: var(--primary); margin-bottom: 2px; }
.about-feature p { font-size: 12px; color: var(--text-muted); margin: 0; line-height: 1.5; }
.about-image { position: relative; aspect-ratio: 4/5; overflow: hidden; border-radius: 4px; box-shadow: 0 30px 60px rgba(12,30,58,0.18); }
.about-image img { width: 100%; height: 100%; object-fit: cover; }
.about-image-badge { position: absolute; bottom: 24px; left: 24px; background: rgba(255,255,255,0.95); padding: 14px 22px; font-size: 13px; font-weight: 600; color: var(--primary); letter-spacing: 2px; line-height: 1.5; }

.advantages-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.advantage-card { padding: 36px 28px; background: var(--bg); border-radius: 4px; border-top: 3px solid var(--secondary); transition: var(--transition); }
.advantage-card:hover { background: #fff; box-shadow: 0 16px 40px rgba(12,30,58,0.1); transform: translateY(-4px); }
.advantage-num { font-size: 32px; font-weight: 200; color: var(--secondary); margin-bottom: 18px; line-height: 1; }
.advantage-card h3 { font-size: 18px; font-weight: 700; color: var(--primary); margin-bottom: 10px; }
.advantage-card p { color: var(--text-light); font-size: 14px; line-height: 1.7; }

.apps-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; max-width: 1400px; margin: 0 auto; }
.app-item { padding: 32px 18px; text-align: center; background: #fff; border-radius: 4px; transition: var(--transition); border: 1px solid var(--border); }
.app-item:hover { background: var(--primary); color: #fff; transform: translateY(-4px); }
.app-item:hover h3 { color: #fff; }
.app-item:hover .app-icon { background: var(--secondary); color: #fff; }
.app-icon { width: 56px; height: 56px; margin: 0 auto 14px; background: var(--bg); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 26px; transition: var(--transition); }
.app-item h3 { font-size: 15px; font-weight: 700; color: var(--primary); margin-bottom: 4px; transition: var(--transition); }
.app-item p { font-size: 12px; color: var(--text-muted); }

.cta-section { max-width: none; padding: 80px 40px; background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%); color: #fff; text-align: center; }
.cta-title { font-size: clamp(28px, 4vw, 48px); font-weight: 700; color: #fff; margin-bottom: 16px; }
.cta-sub { font-size: 16px; opacity: 0.8; max-width: 720px; margin: 0 auto 36px; line-height: 1.7; }
.cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.partners-tabs { display: flex; gap: 8px; justify-content: center; margin-bottom: 36px; flex-wrap: wrap; }
.partners-tab { padding: 8px 20px; border: 1px solid var(--border); background: #fff; border-radius: 30px; cursor: pointer; font-size: 14px; transition: var(--transition); color: var(--text-light); }
.partners-tab.active, .partners-tab:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.partners-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; }
.partner-item { aspect-ratio: 5/3; padding: 18px; background: #fff; border: 1px solid var(--border); border-radius: 4px; display: flex; align-items: center; justify-content: center; transition: all 0.2s; }
.partner-item:hover { border-color: var(--secondary); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(12,30,58,0.08); }
.partner-item img { max-width: 92%; max-height: 64px; min-height: 32px; width: auto; object-fit: contain; filter: grayscale(20%); transition: filter 0.2s; }
.partner-item:hover img { filter: grayscale(0); }
.partners-stats-bar { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 48px; padding: 28px 24px; background: var(--bg); border-radius: 4px; }
.partners-stat { text-align: center; }
.partners-stat h4 { font-size: 32px; font-weight: 200; color: var(--secondary); margin-bottom: 4px; }
.partners-stat h4 sup { font-size: 18px; vertical-align: super; opacity: 0.7; }
.partners-stat p { font-size: 13px; color: var(--text-muted); letter-spacing: 1px; }

@media (max-width: 1024px) {
  .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .dl-grid { grid-template-columns: repeat(2, 1fr); }
  .advantages-grid { grid-template-columns: repeat(2, 1fr); }
  .apps-grid { grid-template-columns: repeat(3, 1fr); }
  .about-grid { grid-template-columns: 1fr; }
  .partners-grid { grid-template-columns: repeat(4, 1fr); }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .section { padding: 60px 20px; }
  .section-dark, .section-alt, .cta-section { padding: 60px 20px; }
  .cat-grid, .dl-grid, .advantages-grid, .apps-grid, .partners-grid { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 18px; }
  .partners-stats-bar { grid-template-columns: repeat(2, 1fr); }
  .about-features { grid-template-columns: 1fr; }
  .hero-content { padding: 60px 20px 100px; }
  .hero h1 { font-size: 36px; }
}

/* ========================================
   2026-08-11 22:00 详细打磨
   ======================================== */

/* Hero overlay 加重，让产品图更清晰但文字仍可读 */
.hero-overlay { background: linear-gradient(135deg, rgba(12,30,58,0.55) 0%, rgba(12,30,58,0.30) 50%, rgba(12,30,58,0.10) 100%); }

/* Hero 文字更精致 */
.hero h1 { text-shadow: 0 6px 30px rgba(0,0,0,0.35); }
.hero-sub-cn { text-shadow: 0 4px 20px rgba(0,0,0,0.3); }

/* 下载按钮更醒目 */
.dl-btn { padding: 11px 20px !important; font-size: 13px !important; letter-spacing: 2px !important; font-weight: 700 !important; }
.dl-card-large .dl-btn { padding: 12px 24px !important; font-size: 14px !important; }

/* 分类卡封面更突出（轻微 zoom + 标题更精致） */
.cat-img { background: #f0f0f0; }

/* 关于区图片比例 4:5 → 5:6 更协调 */
.about-image { aspect-ratio: 5/6; }

/* 优势卡片数字更精致 */
.advantage-num { font-family: 'Helvetica Neue', 'Inter', sans-serif; font-weight: 100; }

/* 应用领域 hover 更显眼 */
.app-item:hover { border-color: var(--secondary); }

/* Partners section 不要太密 */
.partners-stat h4 { letter-spacing: -0.5px; }

/* CTA 区对比度增强 */
.cta-section .btn-light { background: #fff; color: var(--primary); font-weight: 700; }
.cta-section .btn-outline-light { border-color: rgba(255,255,255,0.7); }

/* 分类卡 hover 阴影更精致 */
.cat-card:hover { box-shadow: 0 20px 50px rgba(12,30,58,0.22); border-color: var(--secondary); }
.dl-card:hover { box-shadow: 0 20px 50px rgba(201,169,110,0.3); }

/* 下载区小卡间距 */
.dl-grid { gap: 22px; }

/* Hero CTA 主按钮加阴影 */
.btn-primary { box-shadow: 0 6px 20px rgba(201,169,110,0.3); }

/* Hero stats 数字字体 */
.hero-stat h3 { font-family: 'Georgia', 'Times New Roman', serif; font-weight: 300; letter-spacing: -1px; }

/* Section padding 更紧凑 */
.section { padding: 100px 40px; }

/* 顶部导航更精致 */
.header { border-bottom: 1px solid rgba(12,30,58,0.06); }
.header.scrolled { box-shadow: 0 1px 24px rgba(12,30,58,0.08); border-bottom: 0; }

/* Logo 区域 hover 效果 */
.logo:hover .logo-name { color: var(--secondary); }
.logo-name { transition: var(--transition); }

/* Hero tagline chip 化 */
.hero-tagline { background: rgba(201,169,110,0.12); border: 1px solid rgba(201,169,110,0.35); padding: 8px 16px; }

/* Section label 更醒目 */
.section-label { letter-spacing: 8px; }

/* 取消 mobile-nav 中"立即咨询"的 hover 闪烁 */
.mobile-nav a { transition: background 0.2s; }
.mobile-nav a:hover { background: rgba(12,30,58,0.06); }

/* Footer 链接间距 */
.footer-col a { padding: 6px 0; line-height: 1.5; }
.footer-col h4 { margin-bottom: 16px; }

/* 关于区段落标题 */
.about-content h3 { font-size: 36px; }

/* 关于区 hero 文字色：浅色背景下深色 */
.about-content p { font-size: 15px; }

/* 应用领域图标 */
.app-icon { font-size: 28px; }

/* 合作伙伴 logo grid */
.partners-grid { gap: 14px; }

/* ========================================
   2026-08-11 22:40 Hero 品牌印记 + 时间地标
   ======================================== */
.hero-brandmark { display: flex; align-items: center; gap: 16px; margin-bottom: 36px; position: relative; z-index: 1; }
.hero-logo { height: 56px; width: auto; display: block; filter: drop-shadow(0 4px 12px rgba(0,0,0,0.3)); }
.hero-brand-text { display: flex; flex-direction: column; gap: 2px; }
.hero-brand-cn { font-size: 18px; font-weight: 600; letter-spacing: 4px; color: #fff; font-family: 'Helvetica Neue', 'PingFang SC', sans-serif; }
.hero-brand-en { font-size: 11px; letter-spacing: 2px; color: rgba(255,255,255,0.55); font-weight: 400; }

.hero h1 { font-size: clamp(36px, 5vw, 64px); font-weight: 700; line-height: 1.15; letter-spacing: -0.5px; margin-bottom: 18px; color: #fff; text-shadow: 0 6px 30px rgba(0,0,0,0.35); position: relative; z-index: 1; }
.hero-en { font-size: 14px; letter-spacing: 4px; color: var(--secondary); font-weight: 400; margin-bottom: 24px; text-transform: uppercase; position: relative; z-index: 1; }

.hero-badges { display: flex; gap: 12px; margin-bottom: 28px; flex-wrap: wrap; position: relative; z-index: 1; }
.hero-badge { padding: 8px 16px; background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.18); border-radius: 24px; font-size: 13px; color: rgba(255,255,255,0.9); letter-spacing: 1px; backdrop-filter: blur(8px); }
.hero-badge b { color: var(--secondary); font-weight: 600; }

.hero-desc { font-size: 16px; line-height: 1.85; max-width: 680px; margin-bottom: 32px; opacity: 0.88; color: #f0f0f0; position: relative; z-index: 1; }

.hero-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; max-width: 720px; padding-top: 32px; border-top: 1px solid rgba(255,255,255,0.18); position: relative; z-index: 1; }

.hero-stat h3 { font-family: 'Georgia', 'Times New Roman', serif; font-size: 36px; font-weight: 300; color: var(--secondary); letter-spacing: -1px; line-height: 1; margin-bottom: 6px; }
.hero-stat h3 sup { font-size: 18px; vertical-align: super; opacity: 0.7; }
.hero-stat p { font-size: 13px; opacity: 0.7; letter-spacing: 1px; }

.hero-scroll { position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%); color: #fff; opacity: 0.6; font-size: 11px; letter-spacing: 4px; animation: bounce 2s infinite; z-index: 2; }
@keyframes bounce { 0%,100% { transform: translateX(-50%) translateY(0); } 50% { transform: translateX(-50%) translateY(8px); } }

.hero-overlay { background: linear-gradient(135deg, rgba(12,30,58,0.55) 0%, rgba(12,30,58,0.30) 50%, rgba(12,30,58,0.10) 100%); }

.hero-content { position: relative; z-index: 1; max-width: 1400px; margin: 0 auto; padding: 80px 40px 120px; width: 100%; }

/* Responsive */
@media (max-width: 768px) {
  .hero-brand-cn { font-size: 15px; letter-spacing: 3px; }
  .hero-logo { height: 40px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 18px; }
}

/* 2026-08-12 footer-meta 备案 + 服务说明 */
.footer-bottom { padding: 20px 30px; border-top: 1px solid rgba(255,255,255,0.08); }
.footer-meta { font-size: 12px; opacity: 0.55; margin-bottom: 8px; letter-spacing: 0.3px; }
.footer-meta a { color: inherit; text-decoration: none; border-bottom: 1px dotted rgba(255,255,255,0.2); transition: opacity 0.2s; }
.footer-meta a:hover { opacity: 0.8; border-bottom-color: rgba(255,255,255,0.5); }
.footer-copy { font-size: 12px; opacity: 0.45; margin: 0; }

/* ========================================
   2026-08-12 00:50 Manifold 重点展示 Banner
   ======================================== */
.section-manifold { color: #fff; }
.manifold-banner {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 80px;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
    padding: 60px 40px;
}
.manifold-banner-text { position: relative; z-index: 2; }
.manifold-banner-image {
    position: relative;
    aspect-ratio: 4/2.5;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.15);
    box-shadow: 0 30px 80px rgba(0,0,0,0.5);
    background: #0a1020;
}
.manifold-banner-image img { width: 100%; height: 100%; object-fit: cover; filter: contrast(1.05) saturate(1.05); }
.manifold-banner-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(5,8,16,0.3) 0%, transparent 60%);
    z-index: 1;
    pointer-events: none;
}
.dl-card-featured {
    border: 1.5px solid var(--secondary) !important;
    box-shadow: 0 12px 32px rgba(201,169,110,0.15) !important;
    position: relative;
}
.dl-card-featured::before {
    content: '★ 重点推荐';
    position: absolute;
    top: -10px;
    left: 18px;
    background: linear-gradient(135deg, var(--secondary) 0%, #e8c98a 100%);
    color: #0c1e3a;
    padding: 4px 12px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 2px;
    border-radius: 4px;
    box-shadow: 0 6px 14px rgba(201,169,110,0.4);
    z-index: 2;
}
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@media (max-width: 1024px) {
    .manifold-banner { grid-template-columns: 1fr; gap: 40px; padding: 40px 24px; }
    .manifold-banner-image { aspect-ratio: 16/10; }
}

/* ========================================
   2026-08-12 01:05 导航 Manifold 高亮
   ======================================== */
.nav .nav-manifold {
    color: var(--gold) !important;
    font-weight: 700;
    position: relative;
    padding: 6px 14px;
    border: 1px solid rgba(201,169,110,0.45);
    border-radius: 4px;
    background: rgba(201,169,110,0.08);
    letter-spacing: 0.5px !important;
    transition: all 0.2s;
}
.nav .nav-manifold:hover {
    background: var(--secondary) !important;
    color: #fff !important;
    box-shadow: 0 6px 18px rgba(201,169,110,0.35);
    border-color: var(--secondary);
}
.nav .nav-manifold .nav-sup {
    font-size: 9px;
    vertical-align: super;
    margin-left: 2px;
    opacity: 0.75;
    letter-spacing: 0.5px;
}
.mobile-nav a.nav-manifold { color: var(--gold); font-weight: 700; }

.hero-visual {
    position: relative; z-index: 2;
    flex: 0 1 540px; max-width: 540px;
    padding: 0 40px 0 0;
}
.hero-visual-card {
    position: relative;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.18);
    border-radius: 6px;
    overflow: hidden;
    box-shadow: 0 30px 80px rgba(0,0,0,0.4);
    backdrop-filter: blur(8px);
    transition: all 0.3s;
}
.hero-visual-card:hover {
    transform: translateY(-6px);
    border-color: rgba(201,169,110,0.6);
    box-shadow: 0 40px 100px rgba(0,0,0,0.5);
}
.hero-visual-card img {
    width: 100%; aspect-ratio: 4/3; object-fit: cover; display: block;
    filter: contrast(1.05) saturate(1.05);
}
.hero-visual-tag {
    position: absolute; top: 18px; left: 18px;
    background: linear-gradient(135deg, #cf0a2c 0%, #ff4d68 100%);
    color: #fff; padding: 7px 14px;
    font-size: 11px; font-weight: 700; letter-spacing: 2px;
    border-radius: 3px; z-index: 2;
    box-shadow: 0 6px 18px rgba(207,10,44,0.4);
}
.hero-visual-info {
    padding: 24px 28px 28px;
    background: rgba(255,255,255,0.03);
}
.hero-visual-info strong {
    display: block; color: #fff; font-size: 22px; font-weight: 700;
    margin-bottom: 6px; letter-spacing: -0.3px;
}
.hero-visual-info span {
    display: block; color: rgba(255,255,255,0.7); font-size: 13px;
    margin-bottom: 16px; letter-spacing: 1px;
}
.hero-visual-info a {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 9px 18px;
    background: linear-gradient(135deg, var(--secondary) 0%, #e8c98a 100%);
    color: #0c1e3a; border-radius: 4px;
    font-size: 13px; font-weight: 700; letter-spacing: 1.5px;
    transition: all 0.2s;
}
.hero-visual-info a:hover {
    transform: translateX(4px);
    box-shadow: 0 6px 18px rgba(201,169,110,0.4);
}