/* ========== 基础重置 ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary: #0088ff;
  --primary-dark: #0066dd;
  --primary-light: #e8f3ff;
  --text: #1a2332;
  --text-light: #5a6a85;
  --bg: #ffffff;
  --bg-alt: #f7f9fc;
  --border: #e2e8f0;
  --shadow: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.10);
  --radius: 12px;
  --radius-sm: 8px;
  --max-w: 1200px;
  --header-h: 64px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', -apple-system, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }

img { max-width: 100%; display: block; }

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

/* ========== 导航栏 ========== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
  transition: box-shadow 0.3s;
}
.header.scrolled { box-shadow: var(--shadow); }

.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}
.logo-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--primary), #0044cc);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; font-weight: 900; color: white;
  flex-shrink: 0;
}

.nav { display: flex; align-items: center; gap: 8px; }
.nav a {
  padding: 6px 14px;
  font-size: 14px;
  color: var(--text-light);
  border-radius: var(--radius-sm);
  transition: color 0.2s, background 0.2s;
}
.nav a:hover { color: var(--primary); background: var(--primary-light); }
.nav .btn-nav {
  background: var(--primary);
  color: white !important;
  padding: 7px 18px;
}
.nav .btn-nav:hover { background: var(--primary-dark); }

/* ========== Hero ========== */
.hero {
  padding: calc(var(--header-h) + 80px) 0 80px;
  background: var(--bg-alt);
  overflow: hidden;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 20px;
  letter-spacing: 1px;
}
.hero h1 {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.5px;
  margin-bottom: 20px;
}
.hero h1 .accent { color: var(--primary); }
.hero p {
  font-size: 18px;
  color: var(--text-light);
  margin-bottom: 32px;
  line-height: 1.7;
}
.hero-btns { display: flex; gap: 12px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
  text-decoration: none;
}
.btn-primary {
  background: var(--primary);
  color: white;
  box-shadow: 0 4px 16px rgba(0,136,255,0.3);
}
.btn-primary:hover {
  background: var(--primary-dark);
  color: white;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0,136,255,0.4);
}
.btn-outline {
  background: white;
  color: var(--text);
  border: 1.5px solid var(--border);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }

.hero-visual {
  background: linear-gradient(135deg, #e8f3ff, #d0e8ff);
  border-radius: 20px;
  padding: 32px;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 320px;
}
.hero-product-shot {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: 0 4px 24px rgba(0,0,0,0.12);
}

/* ========== 数字统计 ========== */
.stats {
  padding: 60px 0;
  background: var(--primary);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}
.stat-num {
  font-size: 40px;
  font-weight: 800;
  color: white;
  line-height: 1;
  margin-bottom: 8px;
}
.stat-label {
  font-size: 14px;
  color: rgba(255,255,255,0.75);
}

/* ========== 服务模块 ========== */
.section { padding: 100px 0; }
.section-alt { background: var(--bg-alt); }
.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 60px;
}
.section-header h2 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 16px;
}
.section-header p {
  font-size: 16px;
  color: var(--text-light);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.service-card {
  background: white;
  border-radius: var(--radius);
  padding: 32px;
  border: 1px solid var(--border);
  transition: transform 0.2s, box-shadow 0.2s;
}
.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.service-icon {
  width: 48px; height: 48px;
  background: var(--primary-light);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
  color: var(--primary);
}
.service-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
}
.service-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
}

/* ========== 产品展示 ========== */
.product-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.product-info h2 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 20px;
}
.product-info p {
  font-size: 15px;
  color: var(--text-light);
  margin-bottom: 24px;
  line-height: 1.7;
}
.product-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 32px;
}
.product-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
}
.check-icon {
  width: 20px; height: 20px;
  background: #e6faf0;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #00b87a;
  flex-shrink: 0;
}
.product-screenshot {
  background: linear-gradient(135deg, #1a2e52, #162338);
  border-radius: 20px;
  padding: 24px;
  box-shadow: var(--shadow-lg);
}
.product-screenshot img {
  border-radius: var(--radius);
  width: 100%;
}

/* ========== 行业场景 ========== */
.industries-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.industry-card {
  background: white;
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  border: 1px solid var(--border);
  transition: all 0.2s;
}
.industry-card:hover {
  border-color: var(--primary);
  box-shadow: 0 4px 20px rgba(0,136,255,0.1);
}
.industry-icon {
  font-size: 32px;
  margin-bottom: 16px;
}
.industry-card h3 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 8px;
}
.industry-card p {
  font-size: 12px;
  color: var(--text-light);
}

/* ========== 联系方式 ========== */
.contact-section {
  background: linear-gradient(135deg, #1a2e52, #162338);
  padding: 80px 0;
  color: white;
}
.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.contact-info h2 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 16px;
}
.contact-info > p {
  color: rgba(255,255,255,0.7);
  margin-bottom: 32px;
  font-size: 15px;
}
.contact-body {
  display: flex;
  align-items: flex-start;
  gap: 40px;
}
.contact-list { list-style: none; display: flex; flex-direction: column;   min-width: 0; }
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  font-size: 15px;
  height: 56px;
}
.contact-item-top{
  display: flex;
  justify-content: space-between;
}
.contact-item-top-left{
  list-style: none; display: flex; flex-direction: column;   min-width: 0;
}
.contact-item span {
  word-break: break-all;
  line-height: 1.5;
}
.contact-item .c-icon {
  width: 40px; height: 40px;
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.contact-wechat-side {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  margin-top: 2px;
  margin-right: 50px;
}
.wechat-qr-inline {
  width: 80px;
  height: 80px;
  border-radius: 8px;
  border: 2px solid rgba(255,255,255,0.15);
}
.wechat-text {
  font-size: 13px;
  color: rgba(255,255,255,0.7);
  white-space: nowrap;
}
.contact-form {
  background: rgba(255,255,255,0.06);
  border-radius: var(--radius);
  padding: 36px;
  border: 1px solid rgba(255,255,255,0.1);
}
.form-group { margin-bottom: 16px; }
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 11px 16px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-sm);
  color: white;
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(255,255,255,0.4); }
.form-group input:focus,
.form-group textarea:focus { border-color: var(--primary); }
.form-group textarea { resize: vertical; min-height: 100px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-submit {
  width: 100%;
  padding: 12px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
  font-family: inherit;
}
.form-submit:hover { background: var(--primary-dark); }

/* ========== 页脚 ========== */
.footer {
  background: #0f1a2e;
  padding: 40px 0;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-left { color: rgba(255,255,255,0.45); font-size: 13px; text-align: center;
  width: 100%;
}
.footer-right { display: flex; gap: 20px; }
.footer-right a { color: rgba(255,255,255,0.45); font-size: 13px; }
.footer-right a:hover { color: white; }

/* ========== 滚动动画 ========== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible { opacity: 1; transform: none; }

/* ========== 响应式 ========== */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero h1 { font-size: 36px; }
  .hero-visual { min-height: 220px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .services-grid { grid-template-columns: 1fr; }
  .product-showcase { grid-template-columns: 1fr; }
  .industries-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-inner { grid-template-columns: 1fr; }
  .nav { display: none; }
}
@media (max-width: 600px) {
  .hero { padding: calc(var(--header-h) + 40px) 0 60px; }
  .hero h1 { font-size: 28px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .industries-grid { grid-template-columns: 1fr 1fr; }
  .footer-inner { flex-direction: column; text-align: center; }
}