:root {
    --blue:      #2563eb;
    --blue-mid:  #3b82f6;
    --blue-light:#eff6ff;
    --blue-soft: #dbeafe;
    --gray-50:   #f8fafc;
    --gray-100:  #f1f5f9;
    --gray-200:  #e2e8f0;
    --gray-300:  #cbd5e1;
    --gray-400:  #94a3b8;
    --gray-500:  #64748b;
    --gray-600:  #475569;
    --gray-700:  #334155;
    --gray-800:  #1e293b;
    --gray-900:  #0f172a;
    --white:     #ffffff;
    --shadow-sm: 0 1px 3px rgba(15,23,42,0.06), 0 1px 2px rgba(15,23,42,0.04);
    --shadow-md: 0 4px 16px rgba(15,23,42,0.08), 0 2px 6px rgba(15,23,42,0.04);
    --shadow-lg: 0 12px 40px rgba(15,23,42,0.1), 0 4px 12px rgba(15,23,42,0.06);
  }

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

  body {
    font-family: 'DM Sans', 'Noto Sans SC', sans-serif;
    background: var(--gray-50);
    color: var(--gray-700);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
  }

  .nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    height: 60px;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--gray-200);
    display: flex; align-items: center;
  }
  .nav-inner {
    max-width: 1200px; margin: 0 auto; padding: 0 28px;
    width: 100%; display: flex; align-items: center; justify-content: space-between;
  }
  .nav-logo {
    display: flex; align-items: center; gap: 10px;
    font-family: 'DM Mono', monospace; font-size: 1rem; font-weight: 500;
    color: var(--gray-900); text-decoration: none;
  }
  .nav-logo-mark {
    width: 30px; height: 30px; background: var(--blue); border-radius: 7px;
    display: flex; align-items: center; justify-content: center;
    color: white; font-size: 0.7rem; font-weight: 600; letter-spacing: 0.05em;
  }
  .nav-back {
    display: flex; align-items: center; gap: 6px;
    font-size: 0.85rem; color: var(--gray-500); text-decoration: none;
    transition: color 0.15s;
  }
  .nav-back:hover { color: var(--blue); }

  .hero {
    padding: 104px 28px 28px;
    background: linear-gradient(150deg, #f0f7ff 0%, #f8fafc 55%, #f1f5f9 100%);
    border-bottom: 1px solid var(--gray-200);
  }
  .hero-inner {
    max-width: 1200px; margin: 0 auto;
    display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: center;
  }
  @media (max-width: 768px) {
    .hero-inner { grid-template-columns: 1fr; gap: 40px; }
    .hero-imgrid { display: none; }
  }

  .badge {
    display: inline-flex; align-items: center; gap: 6px;
    font-size: 0.72rem; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase;
    color: var(--blue); background: var(--blue-light);
    border: 1px solid var(--blue-soft);
    padding: 3px 10px 3px 8px; border-radius: 20px;
  }
  .badge-dot {
    width: 6px; height: 6px; border-radius: 50%; background: var(--blue-mid);
    animation: blink 2.4s ease-in-out infinite;
  }
  @keyframes blink { 0%,100%{opacity:1} 50%{opacity:0.3} }

  .hero-title {
    font-family: 'DM Mono', monospace;
    font-size: 2.5rem;
    font-weight: 500; line-height: 1;
    color: var(--gray-900); letter-spacing: -0.02em;
    margin: 16px 0 6px;
  }
  .hero-subtitle { font-size: 1.2rem; font-weight: 300; color: var(--gray-500); margin-bottom: 20px; }
  .hero-desc { font-size: 1.2rem; line-height: 1.8; color: var(--gray-600); max-width: 480px; margin-bottom: 32px; }
  .hero-stats {
    display: flex; gap: 28px; flex-wrap: wrap;
    padding-top: 24px; border-top: 1px solid var(--gray-200);
  }
  .stat-val { font-family: 'DM Mono', monospace; font-size: 1.5rem; font-weight: 500; color: var(--gray-900); line-height: 1; }
  .stat-val sup { font-size: 0.85rem; }
  .stat-lbl { font-size: 0.7rem; color: var(--gray-400); text-transform: uppercase; letter-spacing: 0.08em; margin-top: 4px; }

  .hero-imgrid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
  .img-ph {
    background: white; border: 1px solid var(--gray-200); border-radius: 14px;
    box-shadow: var(--shadow-sm);
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 8px; color: var(--gray-300);
    font-size: 0.72rem; letter-spacing: 0.06em; font-family: 'DM Mono', monospace;
  }
  .img-ph svg { opacity: 0.4; }
  .img-ph span { color: var(--gray-400); }

  .status-bar { background: white; border-bottom: 1px solid var(--gray-200); padding: 10px 28px; overflow-x: auto; }
  .status-inner { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; gap: 28px; white-space: nowrap; }
  .si { font-size: 0.78rem; color: var(--gray-500); display: flex; align-items: center; gap: 5px; }
  .si strong { color: var(--gray-700); font-weight: 500; }

  .section { padding: 72px 28px; }
  .section-w { background: white; }
  .wrap { max-width: 1200px; margin: 0 auto; }
  .sec-label { font-size: 0.68rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.12em; color: var(--blue); margin-bottom: 8px; }
  .sec-title { font-size: clamp(1.4rem, 3vw, 1.9rem); font-weight: 600; color: var(--gray-900); margin-bottom: 6px; }
  .divider { width: 36px; height: 3px; border-radius: 2px; background: var(--blue); margin-top: 12px; margin-bottom: 40px; }

  .feat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(265px, 1fr)); gap: 12px; }
  .feat-card {
    background: white; border: 1px solid var(--gray-200); border-radius: 12px; padding: 17px 20px;
    transition: box-shadow 0.2s, border-color 0.2s, transform 0.2s;
  }
  .feat-card:hover { box-shadow: var(--shadow-md); border-color: var(--blue-soft); transform: translateY(-2px); }
  .feat-cat { font-size: 0.67rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.1em; color: var(--blue-mid); margin-bottom: 5px; }
  .feat-text { font-size: 0.87rem; color: var(--gray-600); line-height: 1.6; }

  .spec-box { background: white; border: 1px solid var(--gray-200); border-radius: 14px; overflow: hidden; box-shadow: var(--shadow-sm); }
  .spec-tbl { width: 100%; border-collapse: collapse; }
  .spec-tbl thead th {
    padding: 11px 20px; background: var(--gray-50);
    font-size: 0.72rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em;
    color: var(--gray-500); text-align: left; border-bottom: 1px solid var(--gray-200);
  }
  .spec-tbl td { padding: 10px 20px; border-bottom: 1px solid var(--gray-100); font-size: 0.87rem; vertical-align: top; }
  .spec-tbl tr:last-child td { border-bottom: none; }
  .spec-tbl td:first-child { color: var(--gray-400); width: 36%; font-size: 0.83rem; }
  .spec-tbl td:last-child { color: var(--gray-700); }
  .spec-grp td { padding: 8px 20px; background: var(--gray-50); color: var(--gray-400) !important; font-size: 0.68rem !important; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; border-bottom: 1px solid var(--gray-200) !important; }

  .sw-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; }
  .sw-card { background: white; border: 1px solid var(--gray-200); border-radius: 16px; padding: 28px; box-shadow: var(--shadow-sm); display: flex; flex-direction: column; gap: 18px; }
  .sw-icon { width: 44px; height: 44px; border-radius: 11px; background: var(--blue-light); border: 1px solid var(--blue-soft); display: flex; align-items: center; justify-content: center; color: var(--blue); }
  .sw-title { font-size: 1rem; font-weight: 600; color: var(--gray-900); }
  .sw-sub { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--gray-400); margin-top: 2px; }
  .sw-row { background: var(--gray-50); border: 1px solid var(--gray-200); border-radius: 8px; padding: 12px 15px; }
  .sw-rlabel { font-size: 0.67rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--blue); margin-bottom: 4px; }
  .sw-rtext { font-size: 0.83rem; color: var(--gray-500); line-height: 1.6; }
  .chk-list { display: flex; flex-direction: column; gap: 8px; }
  .chk-item { display: flex; align-items: center; gap: 10px; font-size: 0.85rem; color: var(--gray-600); }
  .chk-dot { width: 18px; height: 18px; border-radius: 50%; background: var(--blue-light); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }

  .apps-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(185px, 1fr)); gap: 14px; }
  .app-card { background: white; border: 1px solid var(--gray-200); border-radius: 14px; padding: 22px 16px; text-align: center; transition: box-shadow 0.2s, transform 0.2s; box-shadow: var(--shadow-sm); }
  .app-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
  .app-icon { width: 50px; height: 50px; border-radius: 14px; background: var(--blue-light); margin: 0 auto 12px; display: flex; align-items: center; justify-content: center; font-size: 1.35rem; }
  .app-title { font-size: 0.88rem; font-weight: 600; color: var(--gray-800); margin-bottom: 5px; }
  .app-desc { font-size: 0.78rem; color: var(--gray-400); line-height: 1.5; }

  .cta-box {
    background: linear-gradient(135deg, #1d4ed8 0%, #2563eb 60%, #3b82f6 100%);
    border-radius: 20px; padding: 44px 48px;
    display: flex; flex-wrap: wrap; gap: 28px;
    align-items: center; justify-content: space-between;
    box-shadow: 0 16px 48px rgba(37,99,235,0.22);
  }
  .cta-title { font-size: 1.35rem; font-weight: 600; color: white; margin-bottom: 6px; }
  .cta-desc { font-size: 0.88rem; color: rgba(255,255,255,0.72); }
  .btn-white {
    display: inline-flex; align-items: center; gap: 8px;
    background: white; color: var(--blue);
    padding: 11px 22px; border-radius: 10px;
    font-size: 0.87rem; font-weight: 600; text-decoration: none;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: box-shadow 0.2s, transform 0.15s;
  }
  .btn-white:hover { box-shadow: 0 4px 18px rgba(0,0,0,0.15); transform: translateY(-1px); }
  .btn-ghost {
    display: inline-flex; align-items: center; gap: 8px;
    background: transparent; color: white;
    border: 1.5px solid rgba(255,255,255,0.45);
    padding: 11px 22px; border-radius: 10px;
    font-size: 0.87rem; font-weight: 500; text-decoration: none;
    transition: background 0.2s, border-color 0.2s;
  }
  .btn-ghost:hover { background: rgba(255,255,255,0.12); border-color: rgba(255,255,255,0.7); }
  footer { background: white; border-top: 1px solid var(--gray-200); padding: 22px 28px; text-align: center; font-size: 0.76rem; color: var(--gray-400); font-family: 'DM Mono', monospace; letter-spacing: 0.06em; }



   /* 容器：控制整体宽度和外边距 */
  .product-row {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    max-width: 1200px;
    margin: 20px auto;
    font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  }

  /* 单个产品卡片 */
  .product-card {
    flex: 1;
    background: #ffffff;
    border-radius: 12px;
    border: 1px solid #eaeaea;
    overflow: hidden;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
  }

  /* 悬停效果：增加专业感 */
  .product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    border-color: #007bff;
  }

  /* 图片区域容器：强制比例一致，解决原图长宽不一的问题 */
  .img-box {
    width: 100%;
    max-width: 400px;
    aspect-ratio: 1.2 / 1; /* 统一所有图片的宽高比例 */
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 15px;
    background-color: #fff;
  }

  .img-box img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain; /* 确保精密设备不被裁剪 */
  }



  /* 移动端适配：屏幕太窄时自动变成一列 */
  @media (max-width: 768px) {
    .product-row {
      flex-direction: column;
      padding: 0 10px;
    }
  }

  .hero-image {
  margin-top: 2rem;
}

.hero-image img {
  max-width: 300px;         /* 控制大小，可根据需要调整 */
  width: 100%;
  height: auto;
}

.product-carousel {
  overflow: hidden;
  width: 100%;
  max-width: 900px;
  margin: 2rem auto;
  position: relative;
}

.carousel-track {
  display: flex;
  transition: transform 0.5s ease-in-out;
}

.carousel-item {
  min-width: 100%;           /* 每次显示一张卡片 */
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: white;   /* 卡片白色背景 */
  padding: 1rem;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  border-radius: 10px;
  box-sizing: border-box;
}

.img-box {
  width: 400px;
  height: 300px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}

.img-box img {
  width: 100%;
  height: 100%;
  object-fit: contain;       /* 保持比例且填满盒子 */
}

.product-label {
  text-align: center;
  font-weight: 500;
  font-size: 1rem;
  margin-top: auto;          /* 文字固定在图片下方 */
    display: block;
    color: #333;
    /*background: #fafafa;
    border-top: 1px solid #eee;
    */
  }

  .lang-cn p {
    text-indent: 2em;
}