/* ===== Reset & Base ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: "Microsoft YaHei", "微软雅黑", Arial, Helvetica, sans-serif;
  color: #333; background: #f5f7fa; line-height: 1.7; -webkit-font-smoothing: antialiased;
}
a { color: #2c6b9e; text-decoration: none; transition: color 0.3s; }
a:hover { color: #e8a838; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; }
.section-title {
  text-align: center; font-size: 1.75rem; margin-bottom: 0.5rem; color: #1a3a5c;
}
.section-subtitle {
  text-align: center; color: #666; margin-bottom: 2.5rem; font-size: 0.95rem;
}

/* ===== Top Bar ===== */
.top-bar {
  background: #1a3a5c; color: #ccc; font-size: 0.85rem; padding: 6px 0;
}
.top-bar .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 5px; }
.top-bar a { color: #ccc; }
.top-bar a:hover { color: #e8a838; }

/* ===== Header / Nav ===== */
header { background: #fff; box-shadow: 0 2px 10px rgba(0,0,0,0.08); position: sticky; top: 0; z-index: 1000; }
.header-inner { display: flex; justify-content: space-between; align-items: center; padding: 0 20px; height: 68px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 1.4rem; font-weight: 700; color: #1a3a5c; }
.logo-icon {
  width: 40px; height: 40px; background: linear-gradient(135deg, #1a3a5c, #2c6b9e);
  border-radius: 8px; display: flex; align-items: center; justify-content: center;
  color: #e8a838; font-size: 1.1rem; font-weight: 900; flex-shrink: 0;
}
.logo span.sub { font-size: 0.75rem; font-weight: 400; color: #888; display: block; }
.logo-img { height: 56px; width: auto; display: block; }

.nav { display: flex; gap: 5px; }
.nav a {
  padding: 8px 16px; color: #333; font-size: 0.92rem; font-weight: 500;
  border-radius: 4px; transition: all 0.3s; position: relative;
}
.nav a:hover, .nav a.active { color: #1a3a5c; background: rgba(26,58,92,0.06); }
.nav a.active::after {
  content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
  width: 24px; height: 3px; background: #e8a838; border-radius: 2px;
}
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 5px; background: none; border: none; }
.hamburger span { display: block; width: 26px; height: 3px; background: #1a3a5c; border-radius: 2px; transition: all 0.3s; }

/* ===== Hero ===== */
.hero {
  background: linear-gradient(135deg, #1a3a5c 0%, #2c6b9e 100%);
  color: #fff; padding: 80px 20px; text-align: center; position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; top: -50%; right: -30%;
  width: 600px; height: 600px; background: rgba(255,255,255,0.03); border-radius: 50%;
}
.hero h1 { font-size: 2.5rem; margin-bottom: 15px; position: relative; }
.hero .tagline { font-size: 1.15rem; color: rgba(255,255,255,0.85); margin-bottom: 25px; position: relative; }
.hero .btn-group { display: flex; justify-content: center; gap: 15px; flex-wrap: wrap; position: relative; }

.btn { display: inline-block; padding: 12px 32px; border-radius: 6px; font-size: 1rem; font-weight: 600; transition: all 0.3s; border: none; cursor: pointer; }
.btn-primary { background: #e8a838; color: #1a3a5c; }
.btn-primary:hover { background: #d4952f; color: #1a3a5c; transform: translateY(-2px); box-shadow: 0 4px 15px rgba(232,168,56,0.4); }
.btn-outline { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.5); }
.btn-outline:hover { background: rgba(255,255,255,0.1); border-color: #fff; transform: translateY(-2px); }

/* ===== Highlights Section ===== */
.highlights { padding: 60px 0; }
.highlight-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.highlight-card {
  background: #fff; border-radius: 12px; padding: 30px 20px; text-align: center;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06); transition: all 0.3s;
}
.highlight-card:hover { transform: translateY(-6px); box-shadow: 0 8px 25px rgba(0,0,0,0.1); }
.highlight-card .icon {
  width: 60px; height: 60px; margin: 0 auto 15px; background: linear-gradient(135deg, #1a3a5c, #2c6b9e);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  color: #e8a838; font-size: 1.5rem; font-weight: 700;
}
.highlight-card h3 { font-size: 1.1rem; margin-bottom: 8px; color: #1a3a5c; }
.highlight-card p { font-size: 0.9rem; color: #666; line-height: 1.5; }

/* ===== Sections ===== */
.section { padding: 60px 0; }
.section-alt { background: #fff; }
.section-dark { background: #1a3a5c; color: #fff; }
.section-dark .section-title { color: #fff; }
.section-dark .section-subtitle { color: rgba(255,255,255,0.7); }

/* ===== About Intro ===== */
.about-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.about-intro h3 { font-size: 1.3rem; color: #1a3a5c; margin-bottom: 12px; }
.about-intro p { color: #555; margin-bottom: 12px; font-size: 0.95rem; }
.about-image {
  background: linear-gradient(135deg, #2c6b9e, #1a3a5c); border-radius: 12px;
  padding: 40px; color: #fff; text-align: center; min-height: 260px;
  display: flex; flex-direction: column; justify-content: center;
}
.about-image .big-num { font-size: 4rem; font-weight: 900; color: #e8a838; line-height: 1; }
.about-image p { margin-top: 10px; font-size: 1rem; opacity: 0.9; }

/* ===== Stats ===== */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat-item { text-align: center; padding: 20px; }
.stat-item .num { font-size: 2.5rem; font-weight: 900; color: #e8a838; }
.stat-item .label { font-size: 0.9rem; opacity: 0.8; margin-top: 5px; }

/* ===== CTA ===== */
.cta-section { text-align: center; padding: 60px 20px; }
.cta-section h2 { font-size: 1.6rem; margin-bottom: 10px; }
.cta-section p { font-size: 1rem; opacity: 0.85; margin-bottom: 25px; }
.cta-section .btn { margin: 5px; }

/* ===== About Page ===== */
.timeline { position: relative; padding-left: 30px; }
.timeline::before { content: ''; position: absolute; left: 8px; top: 0; bottom: 0; width: 3px; background: #2c6b9e; border-radius: 2px; }
.timeline-item { position: relative; margin-bottom: 30px; padding-left: 30px; }
.timeline-item::before {
  content: ''; position: absolute; left: -22px; top: 5px;
  width: 14px; height: 14px; background: #e8a838; border-radius: 50%; border: 3px solid #1a3a5c;
}
.timeline-item .year { font-weight: 700; color: #1a3a5c; font-size: 1.1rem; }
.timeline-item p { color: #555; font-size: 0.95rem; }

.team-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 20px;
}
.team-card {
  background: #fff; border-radius: 10px; padding: 20px; text-align: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06); transition: all 0.3s;
}
.team-card:hover { transform: translateY(-4px); box-shadow: 0 6px 20px rgba(0,0,0,0.1); }
.team-card .avatar {
  width: 60px; height: 60px; border-radius: 50%; background: linear-gradient(135deg, #1a3a5c, #2c6b9e);
  margin: 0 auto 12px; display: flex; align-items: center; justify-content: center;
  color: #e8a838; font-size: 1.3rem; font-weight: 700;
}
.team-card h4 { font-size: 1rem; color: #1a3a5c; }
.team-card .role { font-size: 0.85rem; color: #888; }

/* ===== Equipment Page ===== */
.equipment-table-wrap {
  overflow-x: auto; background: #fff; border-radius: 12px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}
.equipment-table {
  width: 100%; border-collapse: collapse; font-size: 0.92rem; min-width: 700px;
}
.equipment-table thead { background: #1a3a5c; color: #fff; }
.equipment-table th { padding: 14px 16px; text-align: left; font-weight: 600; }
.equipment-table td { padding: 12px 16px; border-bottom: 1px solid #ecf0f5; }
.equipment-table tbody tr:hover { background: #f0f4f9; }
.equipment-table .badge {
  display: inline-block; padding: 2px 10px; border-radius: 12px; font-size: 0.8rem; font-weight: 600;
}
.badge-clean { background: #d4edda; color: #155724; }
.badge-normal { background: #f8f9fa; color: #6c757d; }
.equipment-summary { margin-top: 30px; }
.equipment-summary .summary-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 15px; }
.summary-item {
  background: #fff; padding: 20px; border-radius: 10px; text-align: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.summary-item .value { font-size: 2rem; font-weight: 900; color: #1a3a5c; }
.summary-item .value .accent { color: #e8a838; }
.summary-item .desc { font-size: 0.9rem; color: #666; margin-top: 5px; }

/* ===== Products Page ===== */
.material-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.material-card {
  background: #fff; padding: 24px; border-radius: 10px; text-align: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06); transition: all 0.3s;
}
.material-card:hover { transform: translateY(-4px); }
.material-card h4 { font-size: 1.1rem; color: #1a3a5c; margin-bottom: 8px; }
.material-card .mat-icon {
  width: 50px; height: 50px; margin: 0 auto 12px; background: #f0f4f9;
  border-radius: 10px; display: flex; align-items: center; justify-content: center;
  color: #2c6b9e; font-size: 1.2rem; font-weight: 700;
}
.material-card p { font-size: 0.9rem; color: #666; }

.process-steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 15px; margin-top: 20px; }
.process-step { text-align: center; position: relative; }
.process-step .step-num {
  width: 40px; height: 40px; margin: 0 auto 10px; background: #1a3a5c; color: #fff;
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 1.1rem;
}
.process-step .step-icon { font-size: 1.5rem; margin-bottom: 6px; color: #2c6b9e; }
.process-step h5 { font-size: 0.95rem; color: #1a3a5c; }
.process-step p { font-size: 0.82rem; color: #888; }

/* ===== Quality Page ===== */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature-card {
  background: #fff; padding: 28px; border-radius: 10px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06); transition: all 0.3s;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: 0 6px 20px rgba(0,0,0,0.1); }
.feature-card .fc-icon {
  width: 50px; height: 50px; margin-bottom: 15px; background: #e8a838;
  border-radius: 10px; display: flex; align-items: center; justify-content: center;
  color: #1a3a5c; font-size: 1.3rem; font-weight: 700;
}
.feature-card h4 { font-size: 1.1rem; color: #1a3a5c; margin-bottom: 8px; }
.feature-card p { font-size: 0.9rem; color: #666; line-height: 1.6; }

.standards-list { padding: 0; }
.standards-list li {
  padding: 10px 0; border-bottom: 1px solid #ecf0f5; font-size: 0.95rem; color: #444;
  display: flex; align-items: flex-start; gap: 10px;
}
.standards-list li::before { content: '✓'; color: #e8a838; font-weight: 700; flex-shrink: 0; }

/* ===== Contact Page ===== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.contact-info h3 { font-size: 1.2rem; color: #1a3a5c; margin-bottom: 15px; }
.contact-info-item { display: flex; gap: 12px; margin-bottom: 16px; }
.contact-info-item .ci-icon {
  width: 40px; height: 40px; background: #1a3a5c; border-radius: 8px;
  display: flex; align-items: center; justify-content: center; color: #e8a838; font-weight: 700;
  flex-shrink: 0;
}
.contact-info-item .ci-text { font-size: 0.95rem; color: #555; }
.contact-info-item .ci-text strong { color: #333; display: block; font-size: 0.85rem; }

.contact-form { background: #fff; padding: 30px; border-radius: 12px; box-shadow: 0 2px 12px rgba(0,0,0,0.06); }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 0.9rem; color: #333; margin-bottom: 5px; font-weight: 500; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 10px 14px; border: 1px solid #ddd; border-radius: 6px;
  font-size: 0.95rem; font-family: inherit; transition: border-color 0.3s; background: #fafafa;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: none; border-color: #2c6b9e; box-shadow: 0 0 0 3px rgba(44,107,158,0.1);
}
.form-group textarea { resize: vertical; min-height: 100px; }

.qr-placeholder {
  background: #fff; border: 2px dashed #ddd; border-radius: 12px;
  padding: 30px; text-align: center; margin-top: 20px;
}
.qr-placeholder .qr-icon { font-size: 4rem; color: #ccc; }
.qr-placeholder p { color: #999; font-size: 0.9rem; margin-top: 8px; }
.qr-img { max-width: 220px; margin: 10px auto; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.08); }

/* ===== Footer ===== */
footer { background: #1a3a5c; color: rgba(255,255,255,0.7); padding: 50px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 30px; padding-bottom: 30px; }
footer h4 { color: #fff; font-size: 1rem; margin-bottom: 15px; }
footer p, footer a { font-size: 0.88rem; color: rgba(255,255,255,0.6); line-height: 1.8; }
footer a:hover { color: #e8a838; }
footer .footer-logo { font-size: 1.2rem; font-weight: 700; color: #fff; display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.footer-logo-img { height: 44px; width: auto; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1); padding: 16px 0; text-align: center;
  font-size: 0.85rem; color: rgba(255,255,255,0.4);
}

/* ===== Animations ===== */
.fade-in { opacity: 0; transform: translateY(30px); transition: all 0.6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }

/* ===== Print ===== */
@media print {
  header, footer, .top-bar, .hamburger, .nav { display: none; }
  .hero { padding: 30px; }
}

/* ===== Responsive ===== */
@media (max-width: 992px) {
  .highlight-grid { grid-template-columns: repeat(2, 1fr); }
  .about-intro { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .material-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(3, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  html { font-size: 15px; }
  .hamburger { display: flex; }
  .nav { display: none; position: absolute; top: 68px; left: 0; right: 0; background: #fff;
    flex-direction: column; padding: 10px 20px 20px; box-shadow: 0 10px 20px rgba(0,0,0,0.1);
    z-index: 999; gap: 2px;
  }
  .nav.open { display: flex; }
  .nav a { padding: 12px 16px; border-radius: 6px; }
  .nav a.active::after { display: none; }
  .hero h1 { font-size: 1.8rem; }
  .hero { padding: 50px 20px; }
  .highlight-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .highlight-card { padding: 20px 15px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .stat-item .num { font-size: 1.8rem; }
  .section-title { font-size: 1.4rem; }
  .material-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
}

@media (max-width: 480px) {
  .top-bar .container { flex-direction: column; text-align: center; }
  .highlight-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .material-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 1.5rem; }
  .hero .tagline { font-size: 1rem; }
  .btn { padding: 10px 24px; font-size: 0.9rem; }
}