/* 青岛贝帆机电科技有限公司 - 企业官网样式 */

:root {
  --primary: #0a3d6e;
  --primary-dark: #072a4d;
  --primary-light: #1565a8;
  --accent: #c89b3c;
  --accent-light: #e0b85c;
  --text-dark: #1a1a2e;
  --text-body: #4a4a5a;
  --text-light: #7a7a8a;
  --bg-light: #f5f7fa;
  --bg-white: #ffffff;
  --border: #e2e8f0;
  --shadow: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-hover: 0 8px 30px rgba(0,0,0,0.12);
  --radius: 8px;
  --transition: all 0.3s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text-body);
  line-height: 1.7;
  background: var(--bg-white);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.logo img {
  height: 44px;
  width: auto;
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-text .cn {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
}

.logo-text .en {
  font-size: 11px;
  color: var(--text-light);
  letter-spacing: 0.5px;
  line-height: 1.2;
}

nav ul {
  display: flex;
  list-style: none;
  gap: 40px;
}

nav a {
  text-decoration: none;
  color: var(--text-dark);
  font-size: 15px;
  font-weight: 500;
  position: relative;
  padding: 4px 0;
  transition: var(--transition);
}

nav a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 2px;
  background: var(--accent);
  transition: var(--transition);
}

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

nav a:hover::after,
nav a.active::after {
  width: 100%;
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}

.mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-dark);
  transition: var(--transition);
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
  overflow: hidden;
  padding-top: 72px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  opacity: 0.08;
  background-image: 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='0.4'%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: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-content h1 {
  font-size: 52px;
  font-weight: 800;
  color: #fff;
  line-height: 1.15;
  margin-bottom: 20px;
}

.hero-content h1 span {
  color: var(--accent-light);
}

.hero-subtitle {
  font-size: 22px;
  color: rgba(255,255,255,0.85);
  margin-bottom: 16px;
  font-weight: 500;
}

.hero-desc {
  font-size: 16px;
  color: rgba(255,255,255,0.7);
  margin-bottom: 32px;
  max-width: 520px;
  line-height: 1.8;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 36px;
}

.hero-badges span {
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.9);
  padding: 8px 18px;
  border-radius: 30px;
  font-size: 13px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius);
  font-size: 15px;
  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-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(200,155,60,0.35);
}

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

.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.7);
}

.hero-image {
  position: relative;
}

.hero-image img {
  width: 100%;
  border-radius: 12px;
  box-shadow: 0 25px 60px rgba(0,0,0,0.3);
  border: 1px solid rgba(255,255,255,0.1);
}

.hero-specs {
  position: absolute;
  bottom: -20px;
  left: -20px;
  background: var(--bg-white);
  padding: 20px 24px;
  border-radius: 12px;
  box-shadow: var(--shadow-hover);
  display: flex;
  gap: 24px;
}

.hero-specs .spec-item {
  text-align: center;
}

.hero-specs .spec-item .num {
  font-size: 24px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}

.hero-specs .spec-item .label {
  font-size: 12px;
  color: var(--text-light);
  margin-top: 4px;
}

/* Section */
.section {
  padding: 100px 0;
}

.section-alt {
  background: var(--bg-light);
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header h2 {
  font-size: 36px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 12px;
}

.section-header p {
  font-size: 16px;
  color: var(--text-light);
  max-width: 560px;
  margin: 0 auto;
}

.section-title-bar {
  width: 50px;
  height: 4px;
  background: var(--accent);
  margin: 0 auto 16px;
  border-radius: 2px;
}

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: -60px;
  position: relative;
  z-index: 3;
}

.stat-card {
  background: var(--bg-white);
  padding: 32px 24px;
  border-radius: 12px;
  text-align: center;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.stat-card .num {
  font-size: 40px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}

.stat-card .num span { font-size: 18px; }

.stat-card .label {
  font-size: 14px;
  color: var(--text-light);
  margin-top: 8px;
}

/* Features */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--bg-white);
  padding: 36px 28px;
  border-radius: 12px;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: transparent;
}

.feature-icon {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: #fff;
  font-size: 22px;
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
}

/* Product showcase */
.product-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.product-showcase.reverse {
  direction: rtl;
}

.product-showcase.reverse > * {
  direction: ltr;
}

.product-showcase .image img {
  width: 100%;
  border-radius: 12px;
  box-shadow: var(--shadow-hover);
}

.product-showcase .content h3 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 16px;
}

.product-showcase .content p {
  color: var(--text-body);
  margin-bottom: 20px;
  line-height: 1.8;
}

.product-specs-list {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.product-specs-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-body);
}

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

/* Tech params table */
.tech-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.tech-table th,
.tech-table td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.tech-table th {
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  font-size: 14px;
}

.tech-table td {
  font-size: 14px;
  color: var(--text-body);
}

.tech-table tr:last-child td {
  border-bottom: none;
}

.tech-table tr:nth-child(even) {
  background: var(--bg-light);
}

/* Product cards */
.product-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.product-card {
  background: var(--bg-white);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
}

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

.product-card .image {
  height: 200px;
  overflow: hidden;
  background: var(--bg-light);
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-card .image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.product-card:hover .image img {
  transform: scale(1.05);
}

.product-card .info {
  padding: 24px;
}

.product-card .info h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 8px;
}

.product-card .info p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
}

.product-card .info .tag {
  display: inline-block;
  background: rgba(10,61,110,0.08);
  color: var(--primary);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
  margin-top: 12px;
}

/* Timeline */
.timeline {
  position: relative;
  padding-left: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 10px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border);
}

.timeline-item {
  position: relative;
  padding-bottom: 36px;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -34px;
  top: 4px;
  width: 14px;
  height: 14px;
  background: var(--accent);
  border-radius: 50%;
  border: 3px solid var(--bg-white);
  box-shadow: 0 0 0 2px var(--accent);
}

.timeline-item .year {
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 4px;
}

.timeline-item h4 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 6px;
}

.timeline-item p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
}

/* Values */
.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.value-card {
  text-align: center;
  padding: 36px 24px;
  background: var(--bg-white);
  border-radius: 12px;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.value-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
}

.value-card .icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  color: #fff;
  font-size: 24px;
}

.value-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 8px;
}

.value-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-info-card {
  background: var(--bg-white);
  padding: 40px;
  border-radius: 12px;
  border: 1px solid var(--border);
}

.contact-info-card h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 24px;
}

.contact-item {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
  align-items: flex-start;
}

.contact-item .icon {
  width: 44px;
  height: 44px;
  background: rgba(10,61,110,0.08);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 18px;
  flex-shrink: 0;
}

.contact-item .detail h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 2px;
}

.contact-item .detail p {
  font-size: 14px;
  color: var(--text-body);
}

.contact-form {
  background: var(--bg-white);
  padding: 40px;
  border-radius: 12px;
  border: 1px solid var(--border);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-dark);
  margin-bottom: 6px;
}

.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: 14px;
  font-family: inherit;
  transition: var(--transition);
  background: var(--bg-white);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(10,61,110,0.08);
}

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

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.06;
  background-image: 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='0.4'%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");
}

.cta-section h2 {
  font-size: 36px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  position: relative;
}

.cta-section p {
  font-size: 17px;
  color: rgba(255,255,255,0.75);
  margin-bottom: 32px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
}

/* Footer */
footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.6);
  padding: 60px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .logo-text .cn {
  color: #fff;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  margin-top: 16px;
  color: rgba(255,255,255,0.5);
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 10px;
}

.footer-col a {
  color: rgba(255,255,255,0.5);
  text-decoration: none;
  font-size: 14px;
  transition: var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.35);
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-content h1 { font-size: 40px; }
  .hero-desc { margin: 0 auto 32px; }
  .hero-badges { justify-content: center; }
  .hero-cta { justify-content: center; }
  .hero-image { display: none; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .product-showcase { grid-template-columns: 1fr; }
  .product-showcase.reverse { direction: ltr; }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .product-cards { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  nav { display: none; }
  .mobile-toggle { display: flex; }
  .hero-content h1 { font-size: 32px; }
  .section-header h2 { font-size: 28px; }
  .stats-grid { grid-template-columns: 1fr; margin-top: -40px; }
  .features-grid { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: 1fr; }
  .product-cards { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .product-specs-list { grid-template-columns: 1fr; }
}