/* ==============================
   海南通通智能科技有限公司 - 互联网药品信息服务平台
   绿色健康风格
   ============================== */

:root {
  --primary: #10b981;
  --primary-dark: #059669;
  --primary-light: #34d399;
  --primary-50: #ecfdf5;
  --primary-100: #d1fae5;
  --accent: #f59e0b;
  --accent-light: #fbbf24;
  --text-dark: #1f2937;
  --text-medium: #4b5563;
  --text-light: #6b7280;
  --text-muted: #9ca3af;
  --border: #e5e7eb;
  --bg-light: #f9fafb;
  --white: #ffffff;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition: all 0.3s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  color: var(--text-dark);
  background: var(--white);
  line-height: 1.6;
}

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

/* ===== Header ===== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  transition: var(--transition);
}
.site-header.scrolled { box-shadow: var(--shadow-md); }

.header-inner {
  max-width: 1200px; margin: 0 auto;
  padding: 0 24px; height: 72px;
  display: flex; align-items: center; justify-content: space-between;
}

.logo { display: flex; align-items: center; gap: 12px; }
.logo-icon {
  width: 42px; height: 42px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  color: white; font-size: 20px; font-weight: 700;
  box-shadow: 0 4px 12px rgba(16,185,129,0.3);
}
.logo-text { font-size: 18px; font-weight: 600; }
.logo-text span { display: block; font-size: 12px; font-weight: 400; color: var(--text-light); margin-top: -2px; }

.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a {
  padding: 8px 16px; border-radius: var(--radius-sm);
  font-size: 14px; font-weight: 500; color: var(--text-medium);
  transition: var(--transition);
}
.main-nav a:hover, .main-nav a.active { color: var(--primary-dark); background: var(--primary-50); }

.mobile-toggle {
  display: none; width: 40px; height: 40px;
  border: none; background: none; cursor: pointer;
  flex-direction: column; align-items: center; justify-content: center; gap: 5px;
}
.mobile-toggle span { width: 22px; height: 2px; background: var(--text-dark); border-radius: 2px; transition: var(--transition); }

/* Mobile Nav */
.mobile-nav {
  display: none; position: fixed; top: 72px; left: 0; right: 0;
  background: white; border-bottom: 1px solid var(--border);
  padding: 12px 16px; box-shadow: var(--shadow-lg); z-index: 999;
}
.mobile-nav.show { display: block; }
.mobile-nav a {
  display: block; padding: 12px 16px; color: var(--text-medium);
  font-size: 15px; border-radius: var(--radius-sm); transition: var(--transition);
}
.mobile-nav a:hover, .mobile-nav a.active { background: var(--primary-50); color: var(--primary-dark); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 24px; border-radius: var(--radius-sm);
  font-size: 15px; font-weight: 500; border: none; cursor: pointer;
  transition: var(--transition); text-decoration: none;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white; box-shadow: 0 4px 12px rgba(16,185,129,0.3);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(16,185,129,0.4); }
.btn-outline {
  background: white; color: var(--primary-dark);
  border: 1.5px solid var(--primary);
}
.btn-outline:hover { background: var(--primary-50); transform: translateY(-2px); }

/* ===== Hero ===== */
.hero {
  padding: 140px 24px 80px;
  background: linear-gradient(135deg, var(--primary-50) 0%, #f0fdf4 50%, #fefce8 100%);
  position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; top: -40%; right: -15%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(16,185,129,0.08) 0%, transparent 70%);
  border-radius: 50%;
}
.hero-inner {
  max-width: 1200px; margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center;
  position: relative; z-index: 1;
}
.hero h1 { font-size: 42px; font-weight: 700; line-height: 1.3; margin-bottom: 20px; }
.hero h1 .highlight {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-desc { font-size: 17px; color: var(--text-medium); margin-bottom: 32px; line-height: 1.8; }
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 40px; margin-top: 40px; }
.stat-number { font-size: 32px; font-weight: 700; color: var(--primary-dark); }
.stat-label { font-size: 13px; color: var(--text-light); margin-top: 4px; }

.hero-visual { display: flex; justify-content: center; align-items: center; }
.hero-circle {
  width: 380px; height: 380px;
  background: linear-gradient(135deg, rgba(16,185,129,0.1), rgba(52,211,153,0.05));
  border-radius: 50%; position: relative;
  display: flex; align-items: center; justify-content: center;
}
.hero-circle::before {
  content: ''; position: absolute; inset: 20px;
  border: 2px dashed rgba(16,185,129,0.2); border-radius: 50%;
  animation: spin 30s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.hero-icon-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 20px; padding: 40px; }
.hero-icon-item {
  width: 80px; height: 80px; background: white; border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 32px; box-shadow: var(--shadow-lg); transition: var(--transition);
}
.hero-icon-item:hover { transform: translateY(-5px); }

/* ===== Section Common ===== */
.section { padding: 80px 24px; }
.section-inner { max-width: 1200px; margin: 0 auto; }
.section-header { text-align: center; margin-bottom: 60px; }
.section-badge {
  display: inline-block; padding: 6px 16px; background: var(--primary-50);
  color: var(--primary-dark); font-size: 13px; font-weight: 500;
  border-radius: 20px; margin-bottom: 16px;
}
.section-header h2 { font-size: 32px; font-weight: 700; margin-bottom: 16px; }
.section-header p { font-size: 16px; color: var(--text-light); max-width: 600px; margin: 0 auto; }

.section-alt { background: linear-gradient(180deg, var(--primary-50) 0%, white 100%); }

/* ===== Service Cards ===== */
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.service-card {
  background: white; border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 32px; transition: var(--transition); position: relative; overflow: hidden;
}
.service-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  opacity: 0; transition: opacity 0.3s;
}
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-xl); border-color: transparent; }
.service-card:hover::before { opacity: 1; }
.service-icon {
  width: 56px; height: 56px; background: var(--primary-50); border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center; font-size: 24px; margin-bottom: 20px;
}
.service-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 12px; }
.service-card p { font-size: 14px; color: var(--text-light); line-height: 1.7; }

/* ===== Feature Items ===== */
.features-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.feature-item {
  display: flex; gap: 16px; padding: 24px;
  background: white; border: 1px solid var(--border); border-radius: var(--radius-md);
  transition: var(--transition);
}
.feature-item:hover { box-shadow: var(--shadow-md); border-color: var(--primary-light); }
.feature-icon {
  width: 48px; height: 48px; min-width: 48px; background: var(--primary-50);
  border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; font-size: 22px;
}
.feature-content h4 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.feature-content p { font-size: 14px; color: var(--text-light); line-height: 1.6; }

/* ===== Drug Product Cards ===== */
.drugs-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.drug-card {
  background: white; border: 1px solid var(--border); border-radius: var(--radius-lg);
  overflow: hidden; transition: var(--transition); cursor: pointer;
}
.drug-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-xl); }
.drug-card-img {
  width: 100%; height: 220px; overflow: hidden; position: relative;
}
.drug-card-img .drug-img-placeholder {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
  font-size: 64px; color: white;
}
.drug-card-body { padding: 20px; }
.drug-card-body h3 { font-size: 17px; font-weight: 600; margin-bottom: 6px; }
.drug-card-body .generic-name { font-size: 13px; color: var(--text-light); margin-bottom: 12px; }
.drug-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.drug-tag {
  padding: 4px 10px; background: var(--primary-50); color: var(--primary-dark);
  font-size: 12px; border-radius: 20px; font-weight: 500;
}
.drug-tag.batch { background: #eff6ff; color: #2563eb; }
.drug-card-body .desc { font-size: 13px; color: var(--text-light); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.drug-card-footer { padding: 0 20px 20px; display: flex; justify-content: space-between; align-items: center; }
.drug-card-footer .view-btn { color: var(--primary-dark); font-size: 13px; font-weight: 500; }

/* ===== Drug Category Tabs ===== */
.category-tabs {
  display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; margin-bottom: 40px;
}
.category-tab {
  padding: 8px 20px; border-radius: 20px; font-size: 14px; font-weight: 500;
  background: var(--bg-light); color: var(--text-medium); border: 1px solid var(--border);
  cursor: pointer; transition: var(--transition);
}
.category-tab:hover, .category-tab.active {
  background: var(--primary); color: white; border-color: var(--primary);
}

/* ===== Drug Detail Page ===== */
.drug-detail-header {
  padding: 120px 24px 40px;
  background: linear-gradient(135deg, var(--primary-50), #f0fdf4);
}
.drug-detail-inner { max-width: 1200px; margin: 0 auto; }
.drug-detail-main {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start;
}

.drug-gallery {
  background: white; border-radius: var(--radius-lg); padding: 24px;
  box-shadow: var(--shadow-md); border: 1px solid var(--border);
}
.drug-main-image {
  width: 100%; aspect-ratio: 1; border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 120px; margin-bottom: 16px;
  overflow: hidden;
}
.drug-main-image .drug-img-placeholder {
  width: 100%; height: 100%; display: flex; align-items: center; justify-content: center;
  font-size: 120px; color: white; border-radius: var(--radius-md);
}
.drug-thumbs { display: flex; gap: 8px; }
.drug-thumb {
  width: 60px; height: 60px; border-radius: var(--radius-sm);
  border: 2px solid var(--border); display: flex; align-items: center; justify-content: center;
  font-size: 24px; cursor: pointer; transition: var(--transition); overflow: hidden;
}
.drug-thumb:hover, .drug-thumb.active { border-color: var(--primary); }

.drug-info-panel {}
.drug-info-panel h1 { font-size: 28px; font-weight: 700; margin-bottom: 8px; }
.drug-info-panel .generic-name { font-size: 16px; color: var(--text-light); margin-bottom: 20px; }
.drug-info-panel .drug-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }

.drug-info-table { width: 100%; border-collapse: collapse; margin: 20px 0; }
.drug-info-table th, .drug-info-table td {
  padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--border); font-size: 14px;
}
.drug-info-table th {
  width: 120px; color: var(--text-light); font-weight: 500; background: var(--bg-light);
}
.drug-info-table td { color: var(--text-dark); }

.batch-selector { margin: 24px 0; }
.batch-selector label { font-size: 14px; font-weight: 600; display: block; margin-bottom: 8px; }
.batch-options { display: flex; gap: 8px; flex-wrap: wrap; }
.batch-option {
  padding: 8px 16px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-size: 13px; cursor: pointer; transition: var(--transition); background: white;
}
.batch-option:hover, .batch-option.active {
  border-color: var(--primary); background: var(--primary-50); color: var(--primary-dark);
}

/* Drug Detail Sections */
.drug-detail-sections { max-width: 1200px; margin: 40px auto; padding: 0 24px; }
.detail-tab-nav {
  display: flex; border-bottom: 2px solid var(--border); margin-bottom: 32px;
}
.detail-tab {
  padding: 12px 24px; font-size: 15px; font-weight: 500; color: var(--text-light);
  cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -2px;
  transition: var(--transition);
}
.detail-tab:hover { color: var(--primary-dark); }
.detail-tab.active { color: var(--primary-dark); border-bottom-color: var(--primary); }

.detail-content { display: none; }
.detail-content.active { display: block; }
.detail-content h3 { font-size: 18px; font-weight: 600; margin: 24px 0 12px; }
.detail-content h3:first-child { margin-top: 0; }
.detail-content p { font-size: 15px; color: var(--text-medium); line-height: 1.9; margin-bottom: 12px; }
.detail-content ul { padding-left: 20px; margin-bottom: 16px; }
.detail-content li { font-size: 15px; color: var(--text-medium); line-height: 1.9; margin-bottom: 6px; }
.detail-content .warning-box {
  background: #fef3c7; border: 1px solid #fde68a; border-radius: var(--radius-sm);
  padding: 16px 20px; margin: 16px 0;
}
.detail-content .warning-box h4 { font-size: 14px; font-weight: 600; color: #92400e; margin-bottom: 8px; }
.detail-content .warning-box p { color: #92400e; font-size: 14px; }
.detail-content .info-box {
  background: var(--primary-50); border: 1px solid var(--primary-100); border-radius: var(--radius-sm);
  padding: 16px 20px; margin: 16px 0;
}
.detail-content .info-box p { color: var(--primary-dark); font-size: 14px; }

/* ===== About Page ===== */
.page-hero {
  padding: 130px 24px 60px;
  background: linear-gradient(135deg, var(--primary-50), #f0fdf4);
  text-align: center;
}
.page-hero h1 { font-size: 36px; font-weight: 700; margin-bottom: 12px; }
.page-hero p { font-size: 17px; color: var(--text-medium); max-width: 600px; margin: 0 auto; }

.about-content { padding: 60px 24px; }
.about-grid { max-width: 1000px; margin: 0 auto; display: grid; gap: 32px; }
.about-block {
  background: white; border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 40px; transition: var(--transition);
}
.about-block:hover { box-shadow: var(--shadow-md); }
.about-block h3 { font-size: 20px; font-weight: 600; margin-bottom: 20px; display: flex; align-items: center; gap: 12px; }
.about-block h3::before { content: ''; width: 4px; height: 24px; background: var(--primary); border-radius: 2px; }
.about-block p { font-size: 15px; color: var(--text-medium); line-height: 1.9; margin-bottom: 12px; }
.about-block ul { list-style: none; }
.about-block ul li { padding: 8px 0 8px 28px; position: relative; font-size: 15px; color: var(--text-medium); line-height: 1.7; }
.about-block ul li::before { content: '✓'; position: absolute; left: 0; color: var(--primary); font-weight: 700; }

/* ===== Certificate ===== */
.cert-card {
  max-width: 800px; margin: 0 auto; background: white; border-radius: var(--radius-lg);
  padding: 48px; box-shadow: var(--shadow-lg); text-align: center;
}
.cert-badge {
  width: 100px; height: 100px; margin: 0 auto 24px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-size: 40px; color: white; box-shadow: 0 8px 24px rgba(16,185,129,0.3);
}
.cert-card h3 { font-size: 24px; font-weight: 700; margin-bottom: 16px; }
.cert-card p { font-size: 15px; color: var(--text-medium); margin-bottom: 8px; }
.cert-info { margin-top: 32px; padding-top: 32px; border-top: 1px solid var(--border); display: grid; grid-template-columns: repeat(2,1fr); gap: 20px; text-align: left; }
.cert-info-item .label { font-size: 13px; color: var(--text-light); }
.cert-info-item .value { font-size: 14px; font-weight: 500; color: var(--text-dark); }

/* ===== Contact ===== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; max-width: 1000px; margin: 0 auto; }
.contact-card {
  background: white; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 40px;
}
.contact-card h3 { font-size: 20px; font-weight: 600; margin-bottom: 28px; }
.contact-item { display: flex; align-items: flex-start; gap: 16px; margin-bottom: 24px; }
.contact-icon {
  width: 44px; height: 44px; min-width: 44px; background: var(--primary-50);
  border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; font-size: 18px;
}
.contact-label { font-size: 12px; color: var(--text-light); margin-bottom: 4px; }
.contact-value { font-size: 15px; font-weight: 500; }

.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 13px; font-weight: 500; color: var(--text-medium); 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-sm);
  font-size: 14px; font-family: inherit; transition: var(--transition); outline: none;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  border-color: var(--primary); box-shadow: 0 0 0 3px rgba(16,185,129,0.1);
}
.form-group textarea { height: 120px; resize: vertical; }

/* ===== Help ===== */
.help-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 20px; max-width: 1000px; margin: 0 auto; }
.help-card {
  background: white; border: 1px solid var(--border); border-radius: var(--radius-md);
  padding: 28px; transition: var(--transition);
}
.help-card:hover { box-shadow: var(--shadow-md); border-color: var(--primary-light); }
.help-card h4 { font-size: 16px; font-weight: 600; margin-bottom: 12px; display: flex; align-items: center; gap: 10px; }
.help-card p { font-size: 14px; color: var(--text-light); line-height: 1.7; }

/* ===== Legal Pages ===== */
.legal-page { padding: 60px 24px; padding-top: 100px; }
.legal-content {
  max-width: 800px; margin: 0 auto; background: white;
  border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 48px;
}
.legal-content h1 { font-size: 28px; font-weight: 700; margin-bottom: 8px; }
.legal-content .update-time { font-size: 13px; color: var(--text-light); margin-bottom: 32px; padding-bottom: 24px; border-bottom: 1px solid var(--border); }
.legal-content h2 { font-size: 18px; font-weight: 600; margin: 32px 0 16px; }
.legal-content h3 { font-size: 16px; font-weight: 600; margin: 24px 0 12px; }
.legal-content p { font-size: 15px; color: var(--text-medium); line-height: 1.9; margin-bottom: 16px; }
.legal-content ul, .legal-content ol { margin-bottom: 16px; padding-left: 24px; }
.legal-content li { font-size: 15px; color: var(--text-medium); line-height: 1.9; margin-bottom: 6px; }

/* ===== Footer ===== */
.site-footer { background: #1f2937; color: white; padding: 60px 24px 30px; }
.footer-inner { max-width: 1200px; margin: 0 auto; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand h4 { font-size: 18px; font-weight: 600; margin-bottom: 12px; }
.footer-brand p { font-size: 14px; color: #9ca3af; line-height: 1.7; }
.footer-col h5 { font-size: 14px; font-weight: 600; margin-bottom: 16px; color: #e5e7eb; }
.footer-col a { display: block; font-size: 13px; color: #9ca3af; margin-bottom: 10px; transition: color 0.2s; }
.footer-col a:hover { color: var(--primary-light); }
.footer-bottom {
  padding-top: 24px; border-top: 1px solid #374151;
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px;
}
.footer-bottom p { font-size: 12px; color: #9ca3af; }
.footer-bottom a { color: #9ca3af; }
.footer-bottom a:hover { color: var(--primary-light); }

/* ===== Animations ===== */
.fade-up { opacity: 0; transform: translateY(20px); transition: all 0.6s ease; }
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-visual { display: none; }
  .hero-buttons { justify-content: center; }
  .hero-stats { justify-content: center; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .drugs-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .drug-detail-main { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .main-nav { display: none; }
  .mobile-toggle { display: flex; }
  .hero { padding: 120px 20px 60px; }
  .hero h1 { font-size: 30px; }
  .hero-stats { gap: 24px; }
  .stat-number { font-size: 24px; }
  .section { padding: 60px 20px; }
  .section-header h2 { font-size: 26px; }
  .services-grid, .drugs-grid { grid-template-columns: 1fr; }
  .help-grid { grid-template-columns: 1fr; }
  .cert-info { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .legal-content { padding: 32px 20px; }
  .page-hero h1 { font-size: 28px; }
}