/* ===== LYang Medical — Global Styles ===== */
:root {
  --primary: #1a5276;
  --primary-light: #2980b9;
  --accent: #e74c3c;
  --accent-hover: #c0392b;
  --bg: #f5f6fa;
  --card: #ffffff;
  --text: #2c3e50;
  --text-light: #5d6d7e;
  --border: #dee2e6;
  --green: #27ae60;
  --orange: #e67e22;
  --purple: #8e44ad;
  --radius: 10px;
  --shadow: 0 2px 16px rgba(0,0,0,0.06);
  --transition: 0.25s ease;
  --max-width: 1200px;
}

* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body { font-family: 'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif; background:var(--bg); color:var(--text); line-height:1.75; }

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

/* Header */
.header { background:#fff; box-shadow:0 1px 8px rgba(0,0,0,0.06); position:sticky; top:0; z-index:100; }
.header .container { display:flex; align-items:center; justify-content:space-between; padding-top:12px; padding-bottom:12px; }
.logo { font-size:1.3em; font-weight:700; color:var(--primary); text-decoration:none; display:flex; align-items:center; gap:10px; }
.logo span { font-size:0.7em; color:var(--accent); font-weight:400; background:#fdecea; padding:2px 10px; border-radius:12px; }
.nav-links { display:flex; gap:6px; flex-wrap:wrap; }
.nav-links a { color:var(--text); text-decoration:none; padding:8px 14px; border-radius:6px; font-size:0.92em; transition:var(--transition); font-weight:500; }
.nav-links a:hover, .nav-links a.active { background:var(--primary); color:#fff; }
.mobile-menu-btn { display:none; background:none; border:none; font-size:1.5em; cursor:pointer; color:var(--text); }

/* Hero Section */
.hero { background:linear-gradient(135deg, #0d2137 0%, #1a3c4a 30%, #1a5276 70%, #2471a3 100%); color:#fff; padding:80px 24px 100px; text-align:center; position:relative; overflow:hidden; }
.hero::after { content:''; position:absolute; top:0; left:0; right:0; bottom: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"); }
.hero .container { position:relative; z-index:1; }
.hero h1 { font-size:2.8em; margin-bottom:16px; letter-spacing:1px; line-height:1.3; }
.hero .hero-subtitle { font-size:1.2em; opacity:0.9; margin-bottom:30px; max-width:700px; margin-left:auto; margin-right:auto; }
.hero .hero-cta { display:flex; gap:14px; justify-content:center; flex-wrap:wrap; }
.btn { display:inline-block; padding:12px 30px; border-radius:8px; font-size:1em; font-weight:600; text-decoration:none; transition:var(--transition); cursor:pointer; border:none; }
.btn-primary { background:var(--accent); color:#fff; }
.btn-primary:hover { background:var(--accent-hover); transform:translateY(-1px); box-shadow:0 4px 16px rgba(231,76,60,0.35); }
.btn-outline { background:transparent; color:#fff; border:2px solid rgba(255,255,255,0.5); }
.btn-outline:hover { border-color:#fff; background:rgba(255,255,255,0.1); }
.btn-secondary { background:var(--primary); color:#fff; }
.btn-secondary:hover { background:var(--primary-light); }

/* Stats Bar */
.stats-bar { background:#fff; padding:40px 24px; margin-top:-30px; position:relative; z-index:2; border-radius:var(--radius); box-shadow:var(--shadow); }
.stats-grid { display:grid; grid-template-columns:repeat(4, 1fr); gap:20px; text-align:center; }
.stat-item .num { font-size:2em; font-weight:700; color:var(--primary); }
.stat-item .num.red { color:var(--accent); }
.stat-item .num.green { color:var(--green); }
.stat-item .num.orange { color:var(--orange); }
.stat-item .label { font-size:0.9em; color:var(--text-light); margin-top:4px; }

/* Section Common */
.section { padding:60px 24px; }
.section-alt { background:#fff; }
.section-title { text-align:center; margin-bottom:40px; }
.section-title h2 { font-size:1.8em; color:var(--primary); margin-bottom:8px; }
.section-title p { color:var(--text-light); max-width:600px; margin:0 auto; }
.section-divider { width:60px; height:4px; background:var(--accent); margin:16px auto; border-radius:2px; }

/* Cards Grid */
.grid2 { display:grid; grid-template-columns:repeat(auto-fit, minmax(340px, 1fr)); gap:20px; }
.grid3 { display:grid; grid-template-columns:repeat(auto-fit, minmax(280px, 1fr)); gap:18px; }
.grid4 { display:grid; grid-template-columns:repeat(auto-fit, minmax(240px, 1fr)); gap:16px; }

.card { background:#fff; border-radius:var(--radius); padding:28px; box-shadow:var(--shadow); transition:var(--transition); }
.card:hover { transform:translateY(-3px); box-shadow:0 6px 24px rgba(0,0,0,0.1); }
.card-icon { font-size:2.2em; margin-bottom:12px; }
.card h3 { font-size:1.15em; margin-bottom:8px; color:var(--primary); }
.card p { color:var(--text-light); font-size:0.94em; line-height:1.7; }

.tag { display:inline-block; padding:3px 10px; border-radius:4px; font-size:0.78em; font-weight:600; margin-bottom:8px; }
.tag-red { background:#fdecea; color:var(--accent); }
.tag-green { background:#e8f8f0; color:var(--green); }
.tag-blue { background:#e8f4fd; color:#2980b9; }
.tag-orange { background:#fef5e7; color:var(--orange); }
.tag-purple { background:#f3eafa; color:var(--purple); }

/* Info Box */
.info-box { background:#f8f9fa; border-radius:var(--radius); padding:24px; margin:20px 0; border-left:4px solid var(--primary); }
.info-box.red { border-color:var(--accent); background:#fef5f5; }
.info-box.green { border-color:var(--green); background:#f0faf5; }
.info-box h4 { margin-bottom:8px; color:var(--primary); }

/* Table */
.table-wrap { overflow-x:auto; margin:20px 0; }
table { width:100%; border-collapse:collapse; font-size:0.94em; }
th { background:var(--primary); color:#fff; padding:14px 16px; text-align:left; font-weight:600; white-space:nowrap; }
td { padding:12px 16px; border-bottom:1px solid var(--border); }
tr:nth-child(even) td { background:#f8f9fa; }
tr:hover td { background:#eef2f7; }

/* Page Hero (for sub-pages) */
.page-hero { background:linear-gradient(135deg, #1a3c4a, #1a5276); color:#fff; padding:50px 24px; text-align:center; }
.page-hero h1 { font-size:2em; margin-bottom:8px; }
.page-hero p { opacity:0.85; font-size:1.05em; }

/* Breadcrumb */
.breadcrumb { padding:16px 24px; font-size:0.88em; color:var(--text-light); }
.breadcrumb a { color:var(--primary); text-decoration:none; }
.breadcrumb a:hover { text-decoration:underline; }
.breadcrumb span { margin:0 6px; }

/* Blog / Case Cards */
.blog-card, .case-card { background:#fff; border-radius:var(--radius); overflow:hidden; box-shadow:var(--shadow); transition:var(--transition); }
.blog-card:hover, .case-card:hover { transform:translateY(-3px); box-shadow:0 6px 24px rgba(0,0,0,0.1); }
.blog-card-body, .case-card-body { padding:22px; }
.blog-card-body h3, .case-card-body h3 { font-size:1.1em; margin-bottom:8px; }
.blog-card-body h3 a, .case-card-body h3 a { color:var(--text); text-decoration:none; }
.blog-card-body h3 a:hover { color:var(--primary); }
.blog-meta { font-size:0.84em; color:var(--text-light); margin-bottom:10px; }

/* FAQ */
.faq-item { background:#fff; border-radius:var(--radius); padding:20px 24px; margin-bottom:12px; box-shadow:var(--shadow); }
.faq-item h3 { font-size:1.05em; color:var(--primary); margin-bottom:8px; cursor:pointer; }
.faq-item p { color:var(--text-light); }

/* Contact Form */
.contact-grid { display:grid; grid-template-columns:1fr 1fr; gap:30px; }
.contact-info { background:var(--primary); color:#fff; border-radius:var(--radius); padding:36px; }
.contact-info h3 { font-size:1.3em; margin-bottom:16px; }
.contact-info p { margin-bottom:10px; opacity:0.9; }
.contact-form { background:#fff; border-radius:var(--radius); padding:36px; box-shadow:var(--shadow); }
.form-group { margin-bottom:16px; }
.form-group label { display:block; margin-bottom:6px; font-weight:500; color:var(--text); }
.form-group input, .form-group textarea, .form-group select { width:100%; padding:12px 14px; border:1px solid var(--border); border-radius:6px; font-size:0.95em; font-family:inherit; transition:var(--transition); }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { outline:none; border-color:var(--primary); box-shadow:0 0 0 3px rgba(26,82,118,0.1); }
.form-group textarea { resize:vertical; min-height:120px; }

/* Download Card */
.download-card { background:#fff; border-radius:var(--radius); padding:28px; box-shadow:var(--shadow); display:flex; align-items:center; gap:18px; transition:var(--transition); }
.download-card:hover { transform:translateY(-2px); }
.download-icon { font-size:2.4em; }
.download-info h3 { font-size:1.05em; margin-bottom:4px; }
.download-info p { font-size:0.88em; color:var(--text-light); }

/* CTA Section */
.cta-section { background:linear-gradient(135deg, var(--primary), #2471a3); color:#fff; padding:60px 24px; text-align:center; }
.cta-section h2 { font-size:1.8em; margin-bottom:12px; }
.cta-section p { opacity:0.9; margin-bottom:24px; max-width:600px; margin-left:auto; margin-right:auto; }

/* Footer */
.footer { background:#1a1a2e; color:#ccc; padding:50px 24px 24px; }
.footer-grid { display:grid; grid-template-columns:repeat(auto-fit, minmax(220px, 1fr)); gap:30px; margin-bottom:30px; }
.footer-col h4 { color:#fff; margin-bottom:14px; font-size:1.05em; }
.footer-col p, .footer-col a { color:#aaa; font-size:0.9em; text-decoration:none; display:block; margin-bottom:6px; }
.footer-col a:hover { color:#fff; }
.footer-bottom { border-top:1px solid rgba(255,255,255,0.1); padding-top:20px; text-align:center; font-size:0.85em; color:#777; }

/* Mobile Nav */
@media (max-width:768px) {
  .nav-links { display:none; position:absolute; top:100%; left:0; right:0; background:#fff; flex-direction:column; padding:10px 0; box-shadow:0 8px 24px rgba(0,0,0,0.15); }
  .nav-links.show { display:flex; }
  .nav-links a { padding:12px 24px; border-radius:0; }
  .mobile-menu-btn { display:block; }
  .stats-grid { grid-template-columns:repeat(2, 1fr); }
  .hero h1 { font-size:1.8em; }
  .contact-grid { grid-template-columns:1fr; }
  .grid2 { grid-template-columns:1fr; }
}

/* Blog Article Style */
.article-content { max-width:800px; margin:0 auto; }
.article-content h2 { color:var(--primary); margin:30px 0 12px; font-size:1.4em; }
.article-content h3 { margin:22px 0 10px; font-size:1.15em; }
.article-content p { margin-bottom:14px; color:var(--text); line-height:1.9; }
.article-content ul, .article-content ol { margin:10px 0 16px 24px; }
.article-content li { margin:6px 0; }
.article-content .highlight-box { background:#fffbe6; border-left:4px solid #f0c040; padding:16px 20px; margin:20px 0; border-radius:0 8px 8px 0; }

/* File download links */
.file-link { display:inline-flex; align-items:center; gap:8px; background:#f0f7ff; color:var(--primary); padding:10px 18px; border-radius:6px; text-decoration:none; font-weight:500; transition:var(--transition); }
.file-link:hover { background:#dceeff; }

/* Success metrics */
.metric-bar { display:flex; align-items:center; gap:10px; margin:8px 0; }
.metric-bar .bar-fill { height:8px; border-radius:4px; background:var(--primary); }
.metric-bar .bar-label { font-size:0.9em; min-width:80px; font-weight:500; }
.metric-bar .bar-value { font-size:0.9em; color:var(--accent); font-weight:600; }

/* ===== Image Styles ===== */

/* Hero with background image */
.hero-bg {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  position: relative;
}
.hero-bg::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(135deg, rgba(13,33,55,0.88) 0%, rgba(26,60,74,0.78) 30%, rgba(26,82,118,0.65) 70%, rgba(36,113,163,0.5) 100%);
  z-index: 0;
}

/* Hero with image and text side-by-side (new layout) */
.hero-modern {
  background: linear-gradient(135deg, #0d2137 0%, #1a3c4a 50%, #1a5276 100%);
  color: #fff;
  padding: 60px 24px;
  position: relative;
  overflow: hidden;
}
.hero-modern::after {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; bottom: 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='0.04'%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");
}
.hero-modern .container { position: relative; z-index: 1; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 50px;
  align-items: center;
}
.hero-text h1 {
  font-size: 2.6em;
  margin-bottom: 18px;
  line-height: 1.3;
  letter-spacing: 0.5px;
}
.hero-text .hero-subtitle {
  font-size: 1.1em;
  opacity: 0.92;
  margin-bottom: 28px;
  max-width: 580px;
}
.hero-text .hero-cta { display:flex; gap:14px; flex-wrap:wrap; }
.hero-image { position: relative; }
.hero-image img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
  display: block;
}
.hero-image::after {
  content: '';
  position: absolute;
  top: -10px; right: -10px;
  width: 100px; height: 100px;
  background: var(--accent);
  border-radius: 50%;
  opacity: 0.2;
  z-index: -1;
}

/* Page Hero with image banner */
.page-hero-image {
  position: relative;
  background-size: cover;
  background-position: center;
  padding: 80px 24px;
  color: #fff;
  text-align: center;
}
.page-hero-image::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(135deg, rgba(13,33,55,0.85), rgba(26,82,118,0.7));
}
.page-hero-image .container { position: relative; z-index: 1; }
.page-hero-image h1 { font-size: 2.2em; margin-bottom: 12px; }
.page-hero-image p { opacity: 0.92; font-size: 1.08em; max-width: 700px; margin: 0 auto; }

/* Product Showcase Section */
.product-showcase {
  background: #fff;
  padding: 60px 24px;
}
.product-showcase-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  max-width: var(--max-width);
  margin: 0 auto;
}
.product-image-wrap {
  background: linear-gradient(135deg, #f5f6fa, #e8edf3);
  border-radius: 12px;
  padding: 30px;
  text-align: center;
}
.product-image-wrap img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}
.product-features h2 {
  color: var(--primary);
  font-size: 1.8em;
  margin-bottom: 14px;
}
.product-features .lead {
  color: var(--text-light);
  font-size: 1.05em;
  margin-bottom: 22px;
}
.feature-list { list-style: none; padding: 0; }
.feature-list li {
  padding: 10px 0 10px 32px;
  position: relative;
  color: var(--text);
  border-bottom: 1px solid #f0f0f0;
}
.feature-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 10px;
  width: 22px;
  height: 22px;
  background: var(--green);
  color: #fff;
  border-radius: 50%;
  font-size: 0.85em;
  font-weight: bold;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Banner image inside solution/case pages */
.content-banner {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  margin: 20px 0;
  box-shadow: var(--shadow);
  display: block;
}

/* Image grid for solution pages */
.image-feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: center;
  margin: 30px 0;
}
.image-feature-grid.reverse { direction: rtl; }
.image-feature-grid.reverse > * { direction: ltr; }
.image-feature-grid img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.image-feature-grid .text-content h3 {
  color: var(--primary);
  font-size: 1.4em;
  margin-bottom: 12px;
}
.image-feature-grid .text-content p {
  color: var(--text-light);
  line-height: 1.8;
}

/* Case study hero image */
.case-hero-image {
  width: 100%;
  height: 360px;
  object-fit: cover;
  border-radius: var(--radius);
  margin-bottom: 30px;
  box-shadow: var(--shadow);
}

/* Compact image card for applications */
.app-image-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.app-image-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 28px rgba(0,0,0,0.12);
}
.app-image-card .app-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
}
.app-image-card .app-body {
  padding: 18px;
}
.app-image-card h3 {
  color: var(--primary);
  font-size: 1.1em;
  margin-bottom: 8px;
}
.app-image-card p {
  color: var(--text-light);
  font-size: 0.9em;
  line-height: 1.6;
}

/* Responsive */
@media (max-width: 768px) {
  .hero-modern { padding: 40px 20px; }
  .hero-grid { grid-template-columns: 1fr; gap: 30px; }
  .hero-text h1 { font-size: 1.8em; }
  .hero-image { order: -1; }
  .product-showcase-grid { grid-template-columns: 1fr; gap: 24px; }
  .image-feature-grid { grid-template-columns: 1fr; }
  .image-feature-grid.reverse { direction: ltr; }
  .case-hero-image { height: 220px; }
}