@charset "utf-8";
/* ==========================================================================
   飞测官网 · 公共增强样式（fc- 前缀）
   与原有 style.css 并存，不覆盖原样式；用于修复版新增的结构化内容与可访问性
   ========================================================================== */

/* --- 基础归一化：HTML5 doctype 下补齐 XHTML 过渡模式与标准模式的差异 --- */
img { max-width: 100%; border: 0; }
a img, .ab_img img { vertical-align: middle; }
body { -webkit-text-size-adjust: 100%; }

/* --- 屏幕阅读器专用文本 --- */
.fc-sr-only {
  position: absolute !important; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

/* --- 跳转到主内容（键盘可访问性） --- */
.fc-skip {
  position: absolute; left: -9999px; top: 0; z-index: 9999;
  background: #2463b2; color: #fff; padding: 10px 18px;
  font-size: 14px; border-radius: 0 0 6px 0;
}
.fc-skip:focus { left: 0; }

/* --- 页面主标题（H1）：与设计风格保持一致 --- */
.fc-h1 {
  font-size: 32px; line-height: 1.35; color: #1a2b4a;
  font-weight: 700; margin: 0 0 10px; letter-spacing: .5px;
}
.fc-h1-sub { color: #7a8699; font-size: 15px; margin: 0 0 4px; }
.fc-h2 {
  font-size: 22px; color: #1a2b4a; font-weight: 700;
  margin: 34px 0 14px; padding-left: 12px;
  border-left: 4px solid #2463b2; line-height: 1.4;
}

/* --- 面包屑 --- */
.fc-crumb { font-size: 13px; color: #8b96a8; padding: 14px 0 0; }
.fc-crumb a { color: #8b96a8; }
.fc-crumb a:hover { color: #2463b2; }
.fc-crumb span { margin: 0 6px; color: #c3cbd8; }

/* ==========================================================================
   产品详情页
   ========================================================================== */
.fc-pd { max-width: 1600px; margin: 0 auto; padding: 0 20px 60px; }
.fc-pd-head { padding: 26px 0 18px; border-bottom: 1px solid #eef1f5; }
.fc-pd-model {
  display: inline-block; font-family: Arial, sans-serif; font-size: 14px;
  color: #2463b2; background: #eaf1fb; border: 1px solid #d8e5f7;
  border-radius: 4px; padding: 3px 12px; margin-left: 10px; vertical-align: 4px;
}
.fc-pd-tags { margin: 12px 0 0; }
.fc-pd-tags span {
  display: inline-block; font-size: 13px; color: #4a5568;
  background: #f5f8fc; border: 1px solid #e6edf6; border-radius: 20px;
  padding: 4px 14px; margin: 0 8px 8px 0;
}
.fc-pd-cta { margin: 14px 0 0; }
.fc-pd-cta a {
  display: inline-block; background: #2463b2; color: #fff;
  font-size: 15px; padding: 11px 26px; border-radius: 4px;
  transition: .25s;
}
.fc-pd-cta a:hover { background: #1c4f92; }
.fc-pd-cta .fc-pd-tel {
  display: inline-block; margin-left: 18px; font-size: 20px;
  color: #2463b2; font-weight: 700; font-family: Arial, sans-serif;
}

/* 正文排版 */
.fc-body { font-size: 15px; line-height: 1.95; color: #4a5568; }
.fc-body p { margin: 0 0 14px; text-align: justify; }
.fc-lead {
  font-size: 17px; line-height: 1.8; color: #1a2b4a; font-weight: 600;
  background: #f5f8fc; border-left: 4px solid #2463b2;
  padding: 16px 20px; border-radius: 0 8px 8px 0; margin: 0 0 20px;
}
.fc-body h2 { font-size: 20px; color: #1a2b4a; margin: 30px 0 12px; }
.fc-body h3 {
  font-size: 18px; color: #1a2b4a; font-weight: 700;
  margin: 30px 0 12px; padding-left: 12px;
  border-left: 4px solid #2463b2; line-height: 1.4;
}

/* 参数表 */
table.fc-params {
  width: 100%; border-collapse: collapse; margin: 4px 0 10px;
  font-size: 14px; border: 1px solid #e6edf6; background: #fff;
}
table.fc-params th {
  background: #f0f5fc; color: #1a2b4a; font-weight: 700;
  text-align: left; padding: 12px 16px; border: 1px solid #e6edf6; width: 180px;
}
table.fc-params td { padding: 12px 16px; border: 1px solid #e6edf6; color: #4a5568; }
table.fc-params tbody tr:nth-child(even) td { background: #fafcff; }
table.fc-params thead th:nth-child(1) { width: 180px; }

/* 特点列表 */
ul.fc-feats { list-style: none; padding: 0; margin: 4px 0 10px; }
ul.fc-feats li {
  position: relative; padding: 8px 0 8px 26px;
  font-size: 14.5px; color: #4a5568; line-height: 1.8;
  border-bottom: 1px dashed #eef1f5;
}
ul.fc-feats li:last-child { border-bottom: none; }
ul.fc-feats li::before {
  content: "✓"; position: absolute; left: 0; top: 8px;
  color: #2463b2; font-weight: 700;
}

/* 待补说明 */
.fc-note {
  font-size: 13.5px; color: #946c00; background: #fffaf0;
  border: 1px dashed #f0d9a0; border-radius: 6px;
  padding: 12px 16px; margin: 18px 0 0;
}

/* 图注（标明图片对应的型号归属） */
.fc-shotcap { font-size: 12.5px; color: #8b96a8; text-align: center; margin: 6px 0 0; }

/* ==========================================================================
   产品列表 / 分类页
   ========================================================================== */
.fc-pl { max-width: 1600px; margin: 0 auto; padding: 0 20px 60px; }
.fc-pl-intro {
  background: #f5f8fc; border: 1px solid #e6edf6; border-radius: 10px;
  padding: 22px 26px; margin: 22px 0 30px; font-size: 14.5px;
  line-height: 1.9; color: #4a5568;
}
.fc-pl-intro b { color: #2463b2; }

.fc-pl-groups { display: flex; flex-wrap: wrap; gap: 10px; margin: 0 0 26px; }
.fc-pl-groups a {
  font-size: 14px; color: #4a5568; border: 1px solid #e6edf6;
  background: #fff; border-radius: 22px; padding: 8px 20px; transition: .2s;
}
.fc-pl-groups a:hover, .fc-pl-groups a.on {
  background: #2463b2; border-color: #2463b2; color: #fff;
}

.fc-cardgrid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.fc-cardgrid + .fc-cardgrid { margin-top: 22px; }
.fc-card {
  background: #fff; border: 1px solid #eef1f5; border-radius: 10px;
  overflow: hidden; transition: .25s; display: flex; flex-direction: column;
}
.fc-card:hover { transform: translateY(-4px); box-shadow: 0 10px 26px rgba(36,99,178,.12); border-color: #cfe0f5; }
.fc-card-img { display: block; height: 210px; background: #fafcff; overflow: hidden; }
.fc-card-img img { width: 100%; height: 100%; object-fit: contain; display: block; transition: .4s; }
.fc-card:hover .fc-card-img img { transform: scale(1.05); }
.fc-card-img.is-empty { display: flex; align-items: center; justify-content: center; color: #c3cbd8; font-size: 13px; }
.fc-card-body { padding: 16px 18px 18px; flex: 1; display: flex; flex-direction: column; }
.fc-card-name {
  font-size: 15.5px; color: #1a2b4a; line-height: 1.5; font-weight: 600;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden; min-height: 46px;
}
.fc-card-name:hover { color: #2463b2; }
.fc-card-model {
  font-family: Arial, sans-serif; font-size: 13px; color: #2463b2;
  margin-top: 8px; letter-spacing: .3px;
}
.fc-card-desc {
  font-size: 13px; color: #8b96a8; line-height: 1.7; margin: 8px 0 0;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
}
.fc-card-more { margin-top: auto; padding-top: 12px; font-size: 13px; color: #2463b2; }

/* ==========================================================================
   通用内容区块（关于我们 / 联系我们 / 底部 NAP）
   ========================================================================== */
.fc-contact-card {
  background: #f5f8fc; border: 1px solid #e6edf6; border-radius: 10px;
  padding: 26px 28px; font-size: 15px; line-height: 1.9; color: #4a5568;
}
.fc-contact-card p { margin: 0 0 10px; }
.fc-contact-card strong { color: #1a2b4a; display: inline-block; min-width: 92px; }
.fc-contact-card a { color: #2463b2; font-weight: 700; }

.fc-nap { font-size: 13.5px; line-height: 2; color: #9aa6b8; }
.fc-nap b { color: #cfd9e6; font-weight: 600; }

/* 首页信任条（资质 / 数据） */
.fc-trust { background: #f5f8fc; border-top: 1px solid #eef1f5; border-bottom: 1px solid #eef1f5; padding: 34px 0; }
.fc-trust-main { max-width: 1600px; margin: 0 auto; padding: 0 20px; display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; text-align: center; }
.fc-trust-main b { display: block; font-size: 28px; color: #2463b2; font-weight: 800; font-family: Arial, sans-serif; line-height: 1.1; }
.fc-trust-main span { display: block; font-size: 13.5px; color: #7a8699; margin-top: 8px; }

/* ==========================================================================
   首页
   ========================================================================== */
/* 主标题区 */
.fc-hero {
  background: linear-gradient(135deg, #f5f9ff 0%, #eaf1fb 100%);
  border-bottom: 1px solid #e6edf6; padding: 42px 0 44px;
}
.fc-hero-h1 {
  font-size: 34px; line-height: 1.4; color: #1a2b4a; font-weight: 700;
  margin: 0 0 14px; letter-spacing: .5px;
}
.fc-hero-sub { font-size: 15.5px; line-height: 2; color: #4a5568; margin: 0 0 22px; max-width: 1120px; }
.fc-hero-cta { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; }
.fc-btn {
  display: inline-block; background: #2463b2; color: #fff !important;
  font-size: 15px; padding: 12px 30px; border-radius: 4px; transition: .25s;
}
.fc-btn:hover { background: #1c4f92; }
.fc-btn-ghost { background: #fff; color: #2463b2 !important; border: 1px solid #b9d1ee; }
.fc-btn-ghost:hover { background: #eaf1fb; }
.fc-hero-tel { font-size: 14px; color: #7a8699; }
.fc-hero-tel b { font-family: Arial, sans-serif; font-size: 22px; color: #2463b2; margin-left: 6px; vertical-align: -2px; }

/* 核心优势 */
.fc-adv { padding: 60px 0 20px; background: #fff; }
.fc-advgrid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.fc-advcard {
  background: #fff; border: 1px solid #eef1f5; border-radius: 12px;
  padding: 26px 22px; transition: .25s;
}
.fc-advcard:hover { transform: translateY(-4px); box-shadow: 0 10px 26px rgba(36,99,178,.12); border-color: #cfe0f5; }
.fc-advcard b {
  display: flex; align-items: center; justify-content: center;
  width: 46px; height: 46px; border-radius: 10px; background: #eaf1fb;
  color: #2463b2; font-size: 20px; font-weight: 800; margin-bottom: 14px;
}
.fc-advcard h3 { font-size: 17px; color: #1a2b4a; margin: 0 0 10px; font-weight: 700; }
.fc-advcard p { font-size: 13.5px; line-height: 1.9; color: #7a8699; margin: 0; text-align: justify; }

/* 首页产品分类卡 */
.fc-homecat { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; margin: 0 0 34px; }
.fc-homecat-item {
  display: block; background: #f5f8fc; border: 1px solid #e6edf6;
  border-radius: 10px; padding: 20px 18px; transition: .25s;
}
.fc-homecat-item:hover { background: #fff; border-color: #b9d1ee; transform: translateY(-4px); box-shadow: 0 10px 24px rgba(36,99,178,.1); }
.fc-homecat-item b { display: block; font-size: 16.5px; color: #1a2b4a; margin-bottom: 8px; }
.fc-homecat-item span { display: block; font-size: 13px; line-height: 1.8; color: #8b96a8; min-height: 46px; }
.fc-homecat-item em { display: block; margin-top: 12px; font-style: normal; font-size: 13px; color: #2463b2; }

/* 应用领域 */
.fc-apps { padding: 60px 0 20px; background: #fff; }
.fc-appgrid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.fc-appcard {
  display: block; background: #f5f8fc; border: 1px solid #e6edf6;
  border-radius: 10px; padding: 24px 22px; transition: .25s;
}
.fc-appcard:hover { background: #fff; border-color: #b9d1ee; box-shadow: 0 10px 24px rgba(36,99,178,.1); }
.fc-appcard h3 { font-size: 17px; color: #1a2b4a; margin: 0 0 10px; font-weight: 700; }
.fc-appcard p { font-size: 13.5px; line-height: 1.9; color: #8b96a8; margin: 0 0 12px; }
.fc-appcard em { font-style: normal; font-size: 13px; color: #2463b2; }

/* ==========================================================================
   页脚栏目（改为 4 列自适应，理清原有浮动布局在大屏下的错位）
   ========================================================================== */
.abFoot_nav ul { display: flex; flex-wrap: wrap; justify-content: space-between; }
.abFoot_nav ul li {
  float: none !important; max-width: none !important;
  flex: 1 1 0; margin: 0 22px 0 0 !important;
}
.abFoot_nav ul li:last-of-type { margin-right: 0 !important; }
.abFoot_nav .fc-nap { font-size: 13.5px; line-height: 1.9; }
.abFoot_nav .fc-nap a {
  display: inline !important; height: auto !important; line-height: 1.9 !important;
  color: rgba(255,255,255,.5) !important; white-space: normal !important;
}
.abFoot_nav .fc-nap a:hover { color: #fff !important; }

/* ==========================================================================
   响应式
   ========================================================================== */
@media screen and (max-width: 991px) {
  .abFoot_nav ul li { flex: 1 1 44%; margin: 0 0 26px 0 !important; }
}
@media screen and (max-width: 1199px) {
  .fc-cardgrid { grid-template-columns: repeat(3, 1fr); }
  .fc-trust-main { grid-template-columns: repeat(3, 1fr); }
  .fc-homecat { grid-template-columns: repeat(3, 1fr); }
  .fc-advgrid { grid-template-columns: repeat(2, 1fr); }
  .fc-appgrid { grid-template-columns: repeat(2, 1fr); }
  .fc-hero-h1 { font-size: 28px; }
}
@media screen and (max-width: 991px) {
  .fc-cardgrid { grid-template-columns: repeat(2, 1fr); }
  .fc-h1 { font-size: 26px; }
  .fc-homecat { grid-template-columns: repeat(2, 1fr); }
  .fc-appgrid { grid-template-columns: repeat(2, 1fr); }
}
@media screen and (max-width: 767px) {
  .fc-cardgrid { grid-template-columns: 1fr; gap: 16px; }
  .fc-trust-main { grid-template-columns: repeat(2, 1fr); }
  .fc-homecat, .fc-advgrid, .fc-appgrid { grid-template-columns: 1fr; }
  .fc-hero { padding: 30px 0 32px; }
  .fc-hero-h1 { font-size: 22px; }
  .fc-hero-sub { font-size: 14px; }
  .fc-hero-tel { display: block; margin-top: 4px; }
  .fc-pd-model { display: block; margin: 10px 0 0; }
  .fc-pd-cta .fc-pd-tel { display: block; margin: 12px 0 0; }
  table.fc-params th, table.fc-params thead th:nth-child(1) { width: 110px; }
  .fc-pl-intro { padding: 18px; }
}