/* =========================================================
   广州添越勘测科技有限公司 · 官网主题样式
   科技蓝 · 专业可信 · 统一排版体系 v2
   ========================================================= */
:root {
  /* 主色 / 强调色（克制：蓝为主，青为数据高亮，橙为转化按钮） */
  --primary: #1565FF;
  --primary-dark: #0B47C2;
  --primary-soft: #E8F0FF;
  --deep: #0A1B3D;          /* 近黑深蓝，非纯黑 */
  --deep-2: #102A5C;
  --accent: #00C9B1;        /* 数据高亮青（去饱和） */
  --cta: #FF7A1A;           /* 转化按钮橙 */
  --cta-dark: #E8650A;

  /* 中性色（统一冷灰蓝，不混用暖灰） */
  --bg: #F5F7FA;
  --card: #FFFFFF;
  --text: #111A2E;
  --text-2: #56607A;
  --text-3: #8A93A6;
  --border: #E7EBF2;
  --line: #EEF1F6;

  /* 圆角 */
  --radius: 14px;
  --radius-lg: 22px;
  --radius-sm: 10px;

  /* 阴影（带底色色调，自然不突兀） */
  --shadow: 0 8px 24px rgba(16, 32, 64, .06);
  --shadow-md: 0 12px 32px rgba(16, 32, 64, .10);
  --shadow-lg: 0 20px 50px rgba(16, 32, 64, .14);

  /* 布局 */
  --container: 1200px;
  --nav-h: 72px;
  /* 统一间距刻度 */
  --sp-section: clamp(64px, 8vw, 96px);
  --sp-section-sm: clamp(48px, 6vw, 64px);

  --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
section[id] { scroll-margin-top: 92px; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
.container { max-width: var(--container); }

/* ============ 通用排版 ============ */
.section { padding: var(--sp-section) 0; }
/* 首页首节（主营业务）紧贴上方 Hero 数据看板，缩小顶部留白 */
#business.section { padding-top: clamp(28px, 3.5vw, 44px); }
.section-sm { padding: var(--sp-section-sm) 0; }
.bg-white { background: #fff; }
.bg-soft { background: var(--bg); }
.bg-deep {
  background: radial-gradient(1200px 600px at 72% -12%, #16356e 0%, var(--deep) 55%);
  color: #fff;
}

/* 区块标题组件：统一 intro 间距与对齐 */
.section-head { margin-bottom: clamp(36px, 4vw, 52px); }
.section-head.left { text-align: left; }
.section-head.left .section-sub { margin-left: 0; }
.section-head .section-sub { margin-top: 14px; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 16px; font-weight: 700; letter-spacing: .06em;
  color: var(--primary); text-transform: uppercase;
  padding: 8px 18px; border-radius: 999px; background: var(--primary-soft);
}
.eyebrow.on-dark { color: var(--accent); background: rgba(0, 201, 177, .12); }
.eyebrow::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

.section-title {
  font-size: clamp(30px, 3.8vw, 46px); font-weight: 800; line-height: 1.22;
  margin: 18px 0 0; letter-spacing: -.02em; color: var(--text);
}
.section-title.text-white { color: #fff; }
.section-sub { color: var(--text-2); font-size: 16px; max-width: 620px; margin: 0 auto; }

/* 深色区文字辅助类（替代行内 rgba） */
.lead-light { color: rgba(255, 255, 255, .72); }
.muted-light { color: rgba(255, 255, 255, .6); }
.muted-light-2 { color: rgba(255, 255, 255, .5); }

/* ============ 按钮 ============ */
.btn { font-weight: 600; border-radius: 999px; padding: 11px 24px; transition: all .2s ease; font-family: var(--font); }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; transform: translateY(-1px); }
.btn-cta { background: var(--cta); border-color: var(--cta); color: #fff; }
.btn-cta:hover { background: var(--cta-dark); border-color: var(--cta-dark); color: #fff; transform: translateY(-1px); }
.btn-ghost { background: transparent; border: 1.5px solid var(--border); color: var(--text); }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }
.btn-ghost.on-dark { border-color: rgba(255, 255, 255, .3); color: #fff; }
.btn-ghost.on-dark:hover { border-color: var(--accent); color: var(--accent); }
.btn-lg { padding: 14px 30px; font-size: 16px; }
.btn-outline-primary { color: var(--primary); background: transparent; border: 1.5px solid rgba(21, 101, 255, .35); border-radius: 999px; font-weight: 600; }
.btn-outline-primary:hover { background: var(--primary); border-color: var(--primary); color: #fff; }

/* ============ 导航 ============ */
.navbar {
  height: var(--nav-h); background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(180%) blur(10px);
  box-shadow: 0 1px 0 var(--border);
  transition: box-shadow .25s ease, height .25s ease;
}
.navbar.scrolled { box-shadow: 0 6px 24px rgba(16, 32, 64, .08); height: 64px; }
.navbar-brand { font-weight: 800; font-size: 19px; color: var(--text); display: flex; align-items: center; gap: 10px; letter-spacing: -.01em; }
.brand-mark {
  width: 34px; height: 34px; border-radius: 9px; flex: none;
  background: linear-gradient(135deg, var(--primary), #4f8bff);
  display: grid; place-items: center; color: #fff; font-weight: 800; letter-spacing: .02em;
}
.nav-link { font-weight: 500; color: var(--text-2) !important; padding: 8px 14px !important; position: relative; transition: color .15s ease; }
.nav-link:hover, .nav-link.active { color: var(--primary) !important; }
.nav-link.active::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 2px; height: 2px;
  background: var(--primary); border-radius: 2px;
}
.nav-cta { margin-left: 8px; }

/* 移动端折叠菜单：给展开面板加不透明底色，避免与页面内容叠透看不清 */
@media (max-width: 991.98px) {
  /* 收起时整条导航栏也保证不透明，避免透出 banner */
  .navbar { background: rgba(255, 255, 255, .98); }
  .navbar-collapse {
    background: #fff;
    margin: 10px -16px -12px;
    padding: 6px 16px 12px;
    border-top: 1px solid var(--border);
    border-radius: 0 0 16px 16px;
    box-shadow: 0 18px 36px rgba(16, 32, 64, .14);
    max-height: calc(100vh - var(--nav-h) - 16px);
    overflow-y: auto;
  }
  .navbar-collapse .nav-item + .nav-item { border-top: 1px solid var(--border); }
  .navbar-collapse .nav-link { padding: 13px 6px !important; font-size: 16px; }
  .navbar-collapse .nav-link.active::after { display: none; }
  .navbar-collapse .nav-cta { margin: 12px 0 4px; width: 100%; }
  .navbar-collapse .nav-cta .btn { width: 100%; }
}

/* ============ Hero 轮播 Banner（尺寸调小、独立展示、不压文字） ============ */
.page-hero { height: auto; min-height: auto; padding: clamp(112px, 14vw, 156px) 0 clamp(64px, 8vw, 92px); }

/* ============ Hero 左文右图 ============ */
.hero-split { padding: calc(var(--nav-h) + 44px) 0 clamp(26px, 3vw, 40px); }
.hero-split-grid { display: grid; grid-template-columns: 1.02fr 1fr; gap: clamp(32px, 5vw, 64px); align-items: center; }
.hero-split-text { max-width: 560px; }
.hero-split-media { width: 100%; }
.hero-banner {
  position: relative;
  border-radius: 0;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: #eef3fa;
}
.hero-banner .carousel,
.hero-banner .carousel-inner,
.hero-banner .carousel-item { height: 347px; }
.hero-banner-img { width: 100%; height: 100%; object-fit: contain; display: block; }
/* 交叉淡入：彻底避免滑动压盖 */
.hero-banner .carousel-fade .carousel-item { transition: opacity 1s ease-in-out; }
.hero-banner .carousel-fade .carousel-item-next,
.hero-banner .carousel-fade .carousel-item-prev { z-index: 1; }
.hero-banner .carousel-fade .carousel-item.active { z-index: 2; }
/* 圆点指示器（居中底部） */
.hero-banner .carousel-indicators { position: absolute; bottom: 16px; left: 0; right: 0; top: auto; margin: 0; justify-content: center; gap: 8px; z-index: 3; }
.hero-banner .carousel-indicators [data-bs-target] { width: 9px; height: 9px; border-radius: 999px; border: none; background: rgba(10,27,61,.3); margin: 0; transition: all .25s ease; }
.hero-banner .carousel-indicators [data-bs-target].active { width: 26px; background: var(--accent); }
/* 左右箭头（克制、半透明） */
.hero-banner .carousel-control-prev,
.hero-banner .carousel-control-next { width: 46px; height: 46px; top: 50%; transform: translateY(-50%); bottom: auto; opacity: .85; z-index: 3; }
.hero-banner .carousel-control-prev { left: 14px; }
.hero-banner .carousel-control-next { right: 14px; }
.hero-banner .carousel-control-prev:hover,
.hero-banner .carousel-control-next:hover { opacity: 1; }
.hero-banner .carousel-control-prev-icon,
.hero-banner .carousel-control-next-icon { width: 1.3rem; height: 1.3rem; }

/* ============ 价值主张（与轮播分离，干净排版） ============ */
.hero-split-text .eyebrow { margin-bottom: 18px; }
.hero-pitch-title { font-size: clamp(30px, 4.4vw, 50px); font-weight: 800; line-height: 1.2; letter-spacing: -.02em; color: var(--text); margin: 0 0 18px; }
.hero-pitch-title .hl { color: var(--primary); }
.hero-pitch-lead { color: var(--text-2); font-size: 17px; max-width: 600px; margin: 0 0 28px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
/* 深色区大数字（技术实力团队行） */
.deep-num { color: #fff; font-size: 34px; font-weight: 800; font-variant-numeric: tabular-nums; line-height: 1; }
.deep-num .unit { color: var(--accent); font-size: 16px; margin-left: 2px; }
.deep-label { color: rgba(255, 255, 255, .6); margin-top: 6px; }

/* ============ 数据看板 ============ */
.stats-band { margin-top: clamp(36px, 5vw, 56px); padding-top: clamp(26px, 4vw, 38px);
  border-top: 1px solid var(--border); position: relative; z-index: 3; }
.stat-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 8px; }
.stat { text-align: center; padding: 10px 8px; position: relative; }
.stat + .stat::before { content: ""; position: absolute; left: 0; top: 18%; height: 64%; width: 1px; background: var(--border); }
.stat .num { font-size: clamp(26px, 2.6vw, 38px); font-weight: 800; color: var(--primary); font-variant-numeric: tabular-nums; line-height: 1; }
.stat .num .unit { font-size: 16px; color: var(--accent); margin-left: 2px; font-weight: 700; }
.stat .label { font-size: 13.5px; color: var(--text-2); margin-top: 8px; }

/* ============ 卡片通用 ============ */
.card-grid { display: grid; gap: 22px; }
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cols-2 { grid-template-columns: repeat(2, 1fr); }

/* 业务/服务网格：自适应列数，避免强制等分 */
.service-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 20px; }

.feature-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px 24px; transition: all .22s ease; height: 100%;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }
.feature-icon.center { margin-left: auto; margin-right: auto; }
.feature-icon {
  width: 52px; height: 52px; border-radius: 13px; display: grid; place-items: center;
  background: var(--primary-soft); color: var(--primary); margin-bottom: 16px; font-size: 24px;
}
.feature-card h4 { font-size: 18px; font-weight: 700; margin: 0 0 8px; letter-spacing: -.01em; }
.feature-card p { color: var(--text-2); font-size: 14.5px; margin: 0; line-height: 1.65; }
.feature-card .more { display: inline-block; margin-top: 14px; color: var(--primary); font-weight: 600; font-size: 14px; }

/* 主营业务：四行式（左图右文） */
.biz-list { display: flex; flex-direction: column; gap: clamp(30px, 4vw, 48px); }
.biz-row { display: grid; grid-template-columns: 0.92fr 1.08fr; gap: clamp(26px, 4vw, 56px); align-items: center; }
.biz-media { border-radius: 0; overflow: hidden; box-shadow: var(--shadow); background: #eef3fa; }
.biz-media img { width: 100%; height: 250px; object-fit: contain; background: #eef3fa; display: block; }
.biz-body { padding: 4px 0; }
.biz-title { font-size: clamp(22px, 2.4vw, 30px); font-weight: 800; letter-spacing: -.02em; margin: 10px 0 14px; color: var(--text); }
.biz-desc { color: var(--text-2); font-size: 16px; line-height: 1.78; margin: 0 0 22px; max-width: 580px; }
@media (max-width: 768px) {
  .biz-row { grid-template-columns: 1fr; gap: 18px; }
  .biz-media img { height: 200px; }
}
.feature-card.on-dark { background: rgba(255, 255, 255, .05); border-color: rgba(255, 255, 255, .12); }
.feature-card.on-dark h4 { color: #fff; }
.feature-card.on-dark p { color: rgba(255, 255, 255, .7); }

/* 横向价值条（替代 3 等分卡片） */
.value-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.value-item { display: flex; gap: 16px; align-items: flex-start; }
.value-item .vi-ico { width: 46px; height: 46px; border-radius: 12px; flex: none; display: grid; place-items: center;
  background: rgba(255, 255, 255, .08); color: var(--accent); font-size: 22px; }
.value-item h4 { font-size: 17px; font-weight: 700; margin: 2px 0 6px; color: #fff; }
.value-item p { font-size: 14.5px; color: rgba(255, 255, 255, .66); margin: 0; line-height: 1.6; }

/* ============ 团队风采 · 照片墙 ============ */
.gallery-block { margin-top: 44px; }
.gallery-block:first-of-type { margin-top: 36px; }
.gallery-h { font-size: clamp(19px, 2.2vw, 24px); font-weight: 800; letter-spacing: -.01em; margin: 0 0 18px; color: var(--text); position: relative; padding-left: 14px; }
.gallery-h::before { content: ""; position: absolute; left: 0; top: 50%; transform: translateY(-50%); width: 4px; height: 20px; border-radius: 2px; background: var(--primary); }
.gallery-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.photo-card {
  position: relative; aspect-ratio: 4 / 3; border-radius: var(--radius);
  background: #eef3fa; border: 1px dashed #c4d4e8; overflow: hidden;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  color: var(--text-3); text-align: center; gap: 8px;
}
.photo-card .ph-ico { font-size: 30px; opacity: .55; }
.photo-card .ph-label { font-size: 13px; font-weight: 600; letter-spacing: .02em; }
.photo-card img { width: 100%; height: 100%; object-fit: cover; display: block; }
@media (max-width: 992px) { .gallery-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .gallery-grid { grid-template-columns: 1fr; } .photo-card { aspect-ratio: 16 / 10; } }

/* ============ 技术实力 ============ */
.badge-row { display: flex; flex-wrap: wrap; gap: 10px; }
.qual-badge {
  display: inline-flex; align-items: center; gap: 8px; padding: 9px 16px;
  background: rgba(255, 255, 255, .06); border: 1px solid rgba(255, 255, 255, .14);
  border-radius: 999px; font-size: 14px; color: #fff;
}
.qual-badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.equip-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 8px; }
.equip { background: rgba(255, 255, 255, .04); border: 1px solid rgba(255, 255, 255, .1); border-radius: var(--radius); padding: 22px; text-align: center; transition: all .2s ease; }
.equip:hover { background: rgba(255, 255, 255, .07); }
.equip .ico { font-size: 30px; }
.equip h5 { margin: 12px 0 4px; font-size: 16px; color: #fff; }
.equip p { font-size: 13px; color: rgba(255, 255, 255, .6); margin: 0; }

/* ============ 产品 Tabs ============ */
.product-tabs .nav-link {
  border: none; background: var(--bg); color: var(--text-2); font-weight: 600;
  border-radius: 999px; padding: 10px 22px; margin: 0 6px 0 0;
}
.product-tabs .nav-link.active { background: var(--primary); color: #fff; }
.product-panel { margin-top: 28px; }
.product-detail { display: grid; grid-template-columns: 1.1fr 1fr; gap: 36px; align-items: center; }
.product-detail .visual {
  border-radius: var(--radius-lg); min-height: 260px;
  background: linear-gradient(150deg, var(--primary-soft), #fff);
  border: 1px solid var(--border); display: grid; place-items: center; color: var(--primary);
  font-weight: 600; letter-spacing: .02em;
}
.product-detail h3 { font-size: 24px; font-weight: 800; margin: 0 0 10px; letter-spacing: -.01em; }
.product-detail p { color: var(--text-2); }
.product-detail ul { list-style: none; padding: 0; margin: 16px 0 0; }
.product-detail li { padding: 8px 0 8px 28px; position: relative; color: var(--text); }
.product-detail li::before { content: "✓"; position: absolute; left: 0; color: var(--accent); font-weight: 800; }

/* ============ 客户案例 · Bento 非对称布局 ============ */
.logo-wall { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; margin-bottom: 36px; }
.logo-chip { background: #fff; border: 1px solid var(--border); border-radius: 12px; padding: 14px 22px; color: var(--text-3); font-weight: 700; font-size: 14px; }
.case-bento { display: grid; grid-template-columns: 1.5fr 1fr; grid-template-rows: auto auto; gap: 22px; }
.case-card { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); background: #fff; height: 100%; transition: all .22s ease; }
.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }
.case-card .thumb { height: 170px; background: linear-gradient(135deg, var(--deep-2), var(--primary)); display: grid; place-items: center; color: rgba(255, 255, 255, .88); font-weight: 700; letter-spacing: .02em; }
.case-card.big { grid-row: 1 / 3; }
.case-card.big .thumb { height: 100%; min-height: 360px; font-size: 18px; }
.case-card .body { padding: 22px; }
.case-card .body h4 { font-size: 17px; margin: 0 0 6px; letter-spacing: -.01em; }
.case-card .body p { color: var(--text-2); font-size: 14px; margin: 0; line-height: 1.6; }
.case-card .tag { display: inline-block; font-size: 12px; color: var(--primary); background: var(--primary-soft); padding: 3px 10px; border-radius: 999px; margin-bottom: 10px; }

/* ============ 联系我们 ============ */
.contact-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; }
.contact-info { background: var(--deep); border-radius: var(--radius-lg); padding: clamp(28px, 3vw, 40px); color: #fff; }
.contact-info h3 { color: #fff; margin: 0 0 12px; }
.contact-info .item { display: flex; gap: 14px; padding: 14px 0; border-bottom: 1px solid rgba(255, 255, 255, .1); }
.contact-info .item:last-child { border-bottom: none; }
.contact-info .ico { width: 40px; height: 40px; border-radius: 10px; background: rgba(255, 255, 255, .08); display: grid; place-items: center; color: var(--accent); flex: none; font-size: 18px; }
.contact-info .item .k { font-size: 13px; color: rgba(255, 255, 255, .6); }
.contact-info .item .v { font-weight: 600; }
/* 联系页深色卡片内的微信二维码 */
.contact-info .wx-block { display: flex; align-items: center; gap: 16px; margin-top: 22px; padding-top: 20px; border-top: 1px solid rgba(255, 255, 255, .12); }
.contact-info .wx-block .wx-qr { width: 116px; flex: none; background: #fff; border-radius: 10px; padding: 7px; box-shadow: 0 8px 22px rgba(0, 0, 0, .25); }
.contact-info .wx-block .wx-text { font-size: 13px; color: rgba(255, 255, 255, .72); line-height: 1.6; }
.contact-info .wx-block .wx-text b { color: #fff; font-size: 15px; display: block; margin-bottom: 3px; }
.contact-form { background: #fff; border-radius: var(--radius-lg); padding: clamp(26px, 3vw, 34px); box-shadow: var(--shadow); }
.contact-form .form-label { font-weight: 600; font-size: 14px; margin-bottom: 6px; }
.contact-form .form-control { border-radius: 10px; padding: 11px 14px; border-color: var(--border); }
.contact-form .form-control:focus { border-color: var(--primary); box-shadow: 0 0 0 .2rem rgba(21, 101, 255, .15); }
.form-note { font-size: 13px; color: var(--text-3); margin-top: 10px; }
.form-success { display: none; padding: 12px 16px; border-radius: 10px; background: #E6FBF4; color: #0a8f6e; font-weight: 600; margin-top: 14px; }

/* 联系页地图 */
.contact-map { margin-top: clamp(34px, 4vw, 56px); }
.map-head { margin-bottom: 18px; }
.map-box { width: 100%; height: 400px; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); background: var(--primary-soft); }
.map-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
.map-link { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; padding: 9px 18px; border: 1.5px solid rgba(21, 101, 255, .35); color: var(--primary); border-radius: 999px; background: #fff; text-decoration: none; transition: all .2s ease; }
.map-link:hover { background: var(--primary); border-color: var(--primary); color: #fff; transform: translateY(-1px); }

/* ============ 页脚 ============ */
.footer { background: var(--deep); color: rgba(255, 255, 255, .7); padding: clamp(48px, 6vw, 64px) 0 24px; position: relative; overflow: hidden; }
.footer::before { content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(700px 360px at 85% -20%, rgba(0, 201, 177, .12), transparent 70%); }
.footer .container { position: relative; }
.footer h5 { color: #fff; font-size: 15px; margin-bottom: 16px; letter-spacing: .02em; }
.footer a { color: rgba(255, 255, 255, .7); display: block; padding: 5px 0; font-size: 14px; transition: color .15s ease; }
.footer a:hover { color: var(--accent); }
.footer .brand-mark { background: linear-gradient(135deg, var(--primary), #4f8bff); }
.footer-brand-text { color: rgba(255, 255, 255, .6); font-size: 14px; line-height: 1.7; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .1); margin-top: clamp(28px, 4vw, 40px); padding-top: 20px; font-size: 13px; color: rgba(255, 255, 255, .5); }
.footer-bottom a { display: inline; padding: 0; color: inherit; text-decoration: none; }
.footer-bottom a:hover { color: var(--accent); }

/* ============ 发展历程 / 时间线 ============ */
.timeline { position: relative; padding-left: 26px; margin-top: 8px; }
.timeline::before { content: ""; position: absolute; left: 7px; top: 6px; bottom: 6px; width: 2px; background: var(--border); }
.timeline .t-item { position: relative; padding: 0 0 26px 8px; }
.timeline .t-item::before { content: ""; position: absolute; left: -26px; top: 6px; width: 16px; height: 16px; border-radius: 50%; background: #fff; border: 3px solid var(--primary); }
.timeline .t-year { font-weight: 800; color: var(--primary); font-size: 17px; }
.timeline .t-text { color: var(--text-2); font-size: 14.5px; margin-top: 2px; }

/* ============ 招聘职位 ============ */
.job-list { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; background: #fff; }
.job-row { display: flex; align-items: center; gap: 16px; padding: 18px 22px; border-bottom: 1px solid var(--border); }
.job-row:last-child { border-bottom: none; }
.job-row .title { font-weight: 700; flex: 1; font-size: 16px; }
.job-row .meta { color: var(--text-3); font-size: 13px; }
.job-row .btn { flex: none; }

/* ============ 回到顶部 ============ */
.back-top {
  position: fixed; right: 24px; bottom: 24px; width: 46px; height: 46px; border-radius: 50%;
  background: var(--primary); color: #fff; border: none; display: grid; place-items: center;
  box-shadow: var(--shadow-lg); opacity: 0; pointer-events: none; transition: all .25s ease; z-index: 50;
}
.back-top.show { opacity: 1; pointer-events: auto; }
.back-top:hover { background: var(--primary-dark); }

/* ============ 图片与媒体 ============ */
.brand-logo { height: 32px; width: auto; }
.footer .brand-logo { height: 30px; }
/* 页脚微信二维码 */
.footer .wx-qr { width: 116px; flex: none; background: #fff; border-radius: 10px; padding: 7px; margin-top: 12px; box-shadow: 0 8px 22px rgba(0, 0, 0, .25); }
.footer .wx-qr-tip { display: block; margin-top: 10px; font-size: 13px; color: rgba(255, 255, 255, .65); }
/* 页脚二维码独立成最右列 */
.footer .footer-qr-col { display: flex; flex-direction: column; align-items: center; }
.footer .footer-qr-col .wx-qr { cursor: pointer; transition: transform .15s ease; }
.footer .footer-qr-col .wx-qr:hover { transform: scale(1.04); }
/* 二维码点击放大灯箱 */
.qr-lightbox { position: fixed; inset: 0; background: rgba(0,0,0,.82); display: none; align-items: center; justify-content: center; z-index: 2100; cursor: zoom-out; }
.qr-lightbox.open { display: flex; }
.qr-lightbox img { width: min(360px, 78vw); height: auto; background: #fff; padding: 14px; border-radius: 14px; box-shadow: 0 24px 70px rgba(0,0,0,.55); }
.qr-lightbox .qr-lb-tip { position: absolute; bottom: 30px; left: 0; right: 0; text-align: center; color: #fff; font-size: 14px; opacity: .82; }
.hero-visual img { width: 100%; height: 100%; object-fit: cover; border-radius: calc(var(--radius-lg) - 22px); }
.media-img { width: 100%; height: 200px; object-fit: cover; border-radius: var(--radius); }
/* 经营范围卡（带图） */
.scope-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: all .22s ease; height: 100%; }
.scope-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }
.scope-card .media-img { height: 180px; border-radius: 0; }
.scope-card .body { padding: 22px; }
.scope-card .body h4 { font-size: 17px; margin: 0 0 8px; letter-spacing: -.01em; }
.scope-card .body p { color: var(--text-2); font-size: 14px; line-height: 1.65; margin: 0; }
/* 产品卡（带图） */
.prod-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: all .22s ease; height: 100%; }
.prod-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }
.prod-card .media-img { height: 400px; border-radius: 0; object-fit: contain; background: #eef3fa; padding: 14px; }
/* 产品页中段大图：整宽、完整显示不裁剪 */
.prod-figure-img { width: 100%; max-width: 1000px; height: auto; display: block; margin: 0 auto; border-radius: 0; box-shadow: var(--shadow-lg); }
.prod-card .body { padding: 24px; }
.prod-card .body .tag { display: inline-block; font-size: 12px; color: var(--primary); background: var(--primary-soft); padding: 3px 10px; border-radius: 999px; margin-bottom: 10px; }
.prod-card .body h4 { font-size: 19px; margin: 0 0 8px; letter-spacing: -.01em; }
.prod-card .body p { color: var(--text-2); font-size: 14.5px; line-height: 1.7; margin: 0; }
.prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
/* 案例卡真实图 */
.case-card .thumb img { width: 100%; height: 100%; object-fit: cover; }
/* 信息列表（关于页公司名片） */
.info-list { list-style: none; padding: 0; margin: 0; }
.info-list li { display: flex; gap: 14px; padding: 14px 0; border-bottom: 1px dashed var(--border); }
.info-list li:last-child { border-bottom: none; }
.info-list .k { color: var(--text-3); font-weight: 600; min-width: 96px; }
.info-list .v { color: var(--text); }
/* 业务明细表 */
.spec-table { width: 100%; border-collapse: collapse; margin-top: 8px; }
.spec-table th, .spec-table td { padding: 16px 18px; border: 1px solid var(--border); vertical-align: top; text-align: left; }
.spec-table th { background: var(--primary-soft); color: var(--primary); font-weight: 700; }
.spec-table th:first-child, .spec-table td:first-child { width: 33.33%; }
.spec-table td { color: var(--text-2); }

/* ============ 灯箱（产品图 / 软著图全览） ============ */
.ty-lightbox { position: fixed; inset: 0; z-index: 1050; background: rgba(0,0,0,.92); display: none; align-items: center; justify-content: center; padding: 20px; backdrop-filter: blur(4px); }
.ty-lightbox.show { display: flex; }
.ty-lightbox img { max-width: 100%; max-height: 90vh; object-fit: contain; border-radius: var(--radius); box-shadow: 0 24px 80px rgba(0,0,0,.4); }
.lb-close { position: absolute; top: 20px; right: 24px; width: 44px; height: 44px; border-radius: 50%; background: rgba(255,255,255,.12); color: #fff; border: none; font-size: 26px; display: grid; place-items: center; cursor: pointer; transition: background .2s ease; }
.lb-close:hover { background: rgba(255,255,255,.24); }
.lb-nav { position: absolute; top: 50%; transform: translateY(-50%); width: 48px; height: 48px; border-radius: 50%; background: rgba(255,255,255,.12); color: #fff; border: none; font-size: 22px; display: grid; place-items: center; cursor: pointer; transition: background .2s ease; }
.lb-nav:hover { background: rgba(255,255,255,.24); }
.lb-prev { left: 16px; }
.lb-next { right: 16px; }
.lb-caption { position: absolute; bottom: 20px; left: 0; right: 0; text-align: center; color: rgba(255,255,255,.8); font-size: 14px; padding: 0 60px; }
.zoom-img { cursor: zoom-in; }

/* ============ 软著证书轮播（与源码 house-carousel 一致） ============ */
.cert-carousel { position: relative; padding: 0 64px; }
.cert-carousel .carousel-inner { overflow: visible; }
/* 源码 indicator-position="none"：隐藏底部指示器 */
.cert-carousel .carousel-indicators { display: none; }
/* 源码 arrow="always"：左右箭头常驻 */
.cert-carousel .carousel-control-prev,
.cert-carousel .carousel-control-next {
  width: 44px; height: 44px; top: 50%; transform: translateY(-50%);
  background: #fff; border: 1px solid var(--border); border-radius: 50%;
  box-shadow: var(--shadow); opacity: 1; transition: all .2s ease;
}
.cert-carousel .carousel-control-prev { left: 0; }
.cert-carousel .carousel-control-next { right: 0; }
.cert-carousel .carousel-control-prev:hover,
.cert-carousel .carousel-control-next:hover { background: var(--primary-soft); border-color: var(--primary); }
.cert-carousel .carousel-control-prev-icon,
.cert-carousel .carousel-control-next-icon {
  width: 1.2rem; height: 1.2rem;
  filter: invert(34%) sepia(95%) saturate(2452%) hue-rotate(205deg) brightness(98%) contrast(104%);
}
.cert-slide { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.cert-card { aspect-ratio: 297 / 210; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; cursor: zoom-in; transition: all .22s ease; }
.cert-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }
/* object-fit: contain —— 完整显示整张证书，绝不被裁剪 */
.cert-card img { width: 100%; height: 100%; object-fit: contain; padding: 10px; background: #fff; }

/* ============ 滚动渐显 ============ */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ============ 响应式 ============ */
@media (max-width: 992px) {
  .hero-split { padding-top: calc(var(--nav-h) + 30px); }
  .hero-split-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero-split-text { max-width: none; }
  .hero-banner .carousel, .hero-banner .carousel-inner, .hero-banner .carousel-item { height: 280px; }
  .cert-carousel { padding: 0 56px; }
  .cert-slide { grid-template-columns: repeat(2, 1fr); gap: 18px; }
  .stat-grid { grid-template-columns: repeat(3, 1fr); row-gap: 22px; }
  .stat + .stat::before { display: none; }
  .cols-3, .cols-2 { grid-template-columns: repeat(2, 1fr); }
  .value-row { grid-template-columns: 1fr; gap: 22px; }
  .equip-grid { grid-template-columns: repeat(2, 1fr); }
  .prod-grid { grid-template-columns: repeat(2, 1fr); }
  .product-detail, .contact-wrap { grid-template-columns: 1fr; }
  .case-bento { grid-template-columns: 1fr; }
  .case-card.big { grid-row: auto; }
  .case-card.big .thumb { min-height: 200px; }
}
@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .hero-banner .carousel, .hero-banner .carousel-inner, .hero-banner .carousel-item { height: 200px; }
  .hero-actions .btn { flex: 1; }
  .cert-carousel { padding: 0 48px; }
  .cert-slide { grid-template-columns: 1fr; gap: 14px; }
  .cert-card { aspect-ratio: 4 / 3; }
  .prod-grid { grid-template-columns: 1fr; }
  .stats-band { margin-top: 32px; padding: 26px 14px; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); row-gap: 20px; }
  .cols-3, .cols-2 { grid-template-columns: 1fr; }
  .equip-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .stat-grid { grid-template-columns: 1fr 1fr; }
  .hero-banner .carousel, .hero-banner .carousel-inner, .hero-banner .carousel-item { height: 147px; }
}