/* ============================================================
   广东高杰电力工程有限公司 - 官网样式
   行业：电力工程 | 配色：电光蓝 + 能量橙
   说明：广东高杰电力工程有限公司官网样式，内容已替换为真实企业信息。
   ============================================================ */

:root {
  --primary: #103a73;
  --primary-dark: #0a2750;
  --primary-light: #1b5fa8;
  --accent: #ff7a1a;
  --accent-dark: #e8650a;
  --bg: #f4f7fb;
  --bg-soft: #eaf0f8;
  --white: #ffffff;
  --text: #1f2d3d;
  --muted: #6b7a8d;
  --border: #e2e8f0;
  --shadow: 0 10px 30px rgba(16, 58, 115, 0.08);
  --shadow-lg: 0 18px 50px rgba(16, 58, 115, 0.16);
  --radius: 14px;
  --radius-sm: 10px;
  --maxw: 1180px;
  --header-h: 72px;
}

* { 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);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* ---------- 顶部条 ---------- */
.topbar {
  background: var(--primary-dark);
  color: #cfe0f5;
  font-size: 13px;
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 40px;
}
.topbar a { color: #cfe0f5; }
.topbar a:hover { color: #fff; }
.topbar .tb-left span { margin-right: 22px; }
.topbar .tb-left i { color: var(--accent); font-style: normal; margin-right: 6px; }

/* ---------- 头部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow .25s ease;
}
.site-header.scrolled { box-shadow: var(--shadow); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; }
.brand .brand-logo {
  width: 40px; height: 40px;
  display: block;
  border-radius: 8px;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.1; color: var(--primary); }
.brand-text b { font-size: 18px; letter-spacing: .5px; }
.brand-text small { font-size: 10px; color: var(--muted); letter-spacing: 2px; font-weight: 600; }

.nav { display: flex; gap: 6px; }
.nav a {
  padding: 10px 16px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  border-radius: 8px;
  transition: all .2s ease;
}
.nav a:hover { color: var(--primary); background: var(--bg-soft); }
.nav a.active { color: var(--primary); background: var(--bg-soft); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 42px; height: 42px;
  border: none; background: var(--bg-soft); border-radius: 10px;
  cursor: pointer; align-items: center; justify-content: center;
}
.nav-toggle span { width: 20px; height: 2px; background: var(--primary); border-radius: 2px; transition: .25s; }

/* ---------- 英雄区 ---------- */
.hero {
  position: relative;
  color: #fff;
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(27,95,168,.55), transparent 60%),
    linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 55%, var(--primary-light) 100%);
  overflow: hidden;
  padding: 90px 0 100px;
}
.hero::after {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(700px 400px at 70% 30%, #000, transparent 75%);
  pointer-events: none;
}
.hero .container { position: relative; z-index: 2; }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 50px; align-items: center; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.25);
  padding: 7px 14px; border-radius: 30px;
  font-size: 13px; letter-spacing: 1px; margin-bottom: 22px;
}
.hero-tag i { color: var(--accent); font-style: normal; }
.hero h1 { font-size: 42px; line-height: 1.25; font-weight: 800; margin-bottom: 18px; }
.hero h1 .hl { color: #ffd0a8; }
.hero p.lead { font-size: 17px; color: #d6e4f7; max-width: 540px; margin-bottom: 30px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 26px; border-radius: 30px; font-weight: 700; font-size: 15px;
  cursor: pointer; border: none; transition: transform .15s ease, box-shadow .2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 10px 24px rgba(255,122,26,.35); }
.btn-ghost { background: rgba(255,255,255,.12); color: #fff; border: 1px solid rgba(255,255,255,.35); }
.hero-stats { display: flex; gap: 30px; margin-top: 42px; flex-wrap: wrap; }
.hero-stats .s b { font-size: 30px; color: #fff; display: block; line-height: 1; }
.hero-stats .s span { font-size: 13px; color: #b9cdec; }

/* 英雄区右侧卡片 */
.hero-card {
  background: rgba(255,255,255,.10);
  border: 1px solid rgba(255,255,255,.22);
  border-radius: 18px;
  padding: 26px;
  backdrop-filter: blur(6px);
}
.hero-card h3 { font-size: 17px; margin-bottom: 16px; color: #fff; }
.hero-card ul li { display: flex; align-items: center; gap: 10px; padding: 9px 0; color: #e7f0fb; font-size: 14px; border-bottom: 1px dashed rgba(255,255,255,.15); }
.hero-card ul li:last-child { border-bottom: none; }
.hero-card ul li .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); flex: none; }

/* ---------- 通用区块 ---------- */
.section { padding: 78px 0; }
.section.soft { background: var(--bg-soft); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 48px; }
.section-head .eyebrow { color: var(--accent); font-weight: 700; letter-spacing: 2px; font-size: 13px; text-transform: uppercase; }
.section-head h2 { font-size: 32px; font-weight: 800; margin: 10px 0 12px; color: var(--primary-dark); }
.section-head p { color: var(--muted); font-size: 16px; }

/* ---------- 业务卡片 ---------- */
.svc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.svc-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 26px;
  box-shadow: var(--shadow);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  position: relative;
  overflow: hidden;
}
.svc-card::before {
  content: ""; position: absolute; left: 0; top: 0; height: 4px; width: 100%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0); transform-origin: left; transition: transform .3s ease;
}
.svc-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.svc-card:hover::before { transform: scaleX(1); }
.svc-icon {
  width: 56px; height: 56px; border-radius: 14px;
  display: grid; place-items: center; margin-bottom: 18px;
  background: var(--bg-soft); color: var(--primary);
}
.svc-icon svg { width: 28px; height: 28px; }
.svc-card h3 { font-size: 19px; margin-bottom: 10px; color: var(--primary-dark); }
.svc-card p { color: var(--muted); font-size: 14.5px; }
.svc-card .more { display: inline-block; margin-top: 16px; color: var(--accent); font-weight: 700; font-size: 14px; }

/* ---------- 优势 ---------- */
.adv-grid { display: flex; justify-content: center; gap: 22px; flex-wrap: wrap; }
.adv-card { flex: 1 1 300px; max-width: 380px; text-align: center; padding: 30px 22px; background: var(--white); border-radius: var(--radius); border: 1px solid var(--border); }
.adv-card .num { font-size: 40px; font-weight: 800; color: var(--primary); line-height: 1; }
.adv-card .num .u { font-size: 18px; color: var(--accent); }
.adv-card h4 { margin: 14px 0 6px; font-size: 16px; }
.adv-card p { color: var(--muted); font-size: 13.5px; }

/* ---------- 项目卡片 ---------- */
.proj-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.proj-card {
  background: var(--white); border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--border); box-shadow: var(--shadow);
  transition: transform .2s ease, box-shadow .2s ease;
}
.proj-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.proj-thumb { height: 180px; position: relative; display: grid; place-items: center; color: #fff; }
.proj-thumb .tag { position: absolute; top: 14px; left: 14px; background: rgba(0,0,0,.35); padding: 5px 12px; border-radius: 20px; font-size: 12px; }
.proj-thumb svg { width: 64px; height: 64px; opacity: .9; }
.proj-body { padding: 22px; }
.proj-body h3 { font-size: 18px; color: var(--primary-dark); margin-bottom: 8px; }
.proj-body .meta { font-size: 13px; color: var(--muted); display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 10px; }
.proj-body p { font-size: 14px; color: var(--muted); }

/* ---------- 关于/双栏 ---------- */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.two-col .lead-text { font-size: 17px; color: var(--text); margin-bottom: 18px; font-weight: 600; }
.two-col p { color: var(--muted); margin-bottom: 14px; }
.feature-list li { display: flex; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--border); }
.feature-list li svg { width: 22px; height: 22px; color: var(--accent); flex: none; }
.feature-list li b { color: var(--primary-dark); }
.side-panel { background: linear-gradient(160deg, var(--primary), var(--primary-light)); color: #fff; border-radius: var(--radius); padding: 34px; }
.side-panel h3 { margin-bottom: 18px; font-size: 20px; }
.side-panel ul li { padding: 11px 0; border-bottom: 1px dashed rgba(255,255,255,.2); display: flex; justify-content: space-between; }
.side-panel ul li:last-child { border: none; }
.side-panel ul li span { color: #b9cdec; font-size: 14px; }

/* ---------- 流程 ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: step; }
.step { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px 22px; position: relative; }
.step::before { counter-increment: step; content: "0" counter(step); position: absolute; top: 18px; right: 22px; font-size: 30px; font-weight: 800; color: var(--bg-soft); }
.step h4 { color: var(--primary); margin-bottom: 8px; font-size: 17px; }
.step p { color: var(--muted); font-size: 14px; }

/* ---------- 招聘 ---------- */
.job-list { display: grid; gap: 16px; }
.job-item { display: flex; align-items: center; justify-content: space-between; gap: 16px; background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 20px 24px; transition: border-color .2s; }
.job-item:hover { border-color: var(--primary-light); }
.job-item .ji-main h4 { font-size: 17px; color: var(--primary-dark); }
.job-item .ji-main .tags { margin-top: 6px; display: flex; gap: 8px; flex-wrap: wrap; }
.job-item .ji-main .tags span { background: var(--bg-soft); color: var(--primary); font-size: 12px; padding: 4px 10px; border-radius: 20px; }
.job-item .ji-apply { background: var(--accent); color: #fff; padding: 10px 20px; border-radius: 30px; font-weight: 700; font-size: 14px; white-space: nowrap; }

/* ---------- 联系 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.contact-info .ci-item { display: flex; gap: 14px; padding: 16px 0; border-bottom: 1px solid var(--border); }
.contact-info .ci-item .ic { width: 44px; height: 44px; border-radius: 12px; background: var(--bg-soft); color: var(--primary); display: grid; place-items: center; flex: none; }
.contact-info .ci-item .ic svg { width: 22px; height: 22px; }
.contact-info .ci-item b { display: block; color: var(--primary-dark); font-size: 15px; margin-bottom: 2px; }
.contact-info .ci-item p { color: var(--muted); font-size: 14px; }
.form-card { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px; box-shadow: var(--shadow); }
.form-card h3 { margin-bottom: 18px; color: var(--primary-dark); }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 6px; color: var(--text); }
.field input, .field textarea, .field select {
  width: 100%; padding: 12px 14px; border: 1px solid var(--border); border-radius: 10px;
  font-size: 15px; font-family: inherit; color: var(--text); background: #fff; transition: border-color .2s;
}
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--primary-light); }
.field textarea { resize: vertical; min-height: 110px; }
.form-note { font-size: 13px; color: var(--muted); margin-top: 8px; }
.form-success { display: none; background: #e8f7ee; color: #1a7f4b; border: 1px solid #b6e3c8; padding: 14px; border-radius: 10px; margin-top: 14px; font-size: 14px; }
.form-success.show { display: block; }

/* ---------- 招聘 banner / CTA ---------- */
.cta-band {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
  color: #fff; border-radius: 18px; padding: 44px 40px;
  display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap;
}
.cta-band h3 { font-size: 24px; margin-bottom: 8px; }
.cta-band p { color: #cfe0f5; }
.cta-band .btn-primary { background: #fff; color: var(--primary); box-shadow: none; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--primary-dark); color: #b9cdec; padding: 56px 0 26px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 34px; }
.footer-grid h4 { color: #fff; font-size: 16px; margin-bottom: 16px; }
.footer-grid .f-about p { font-size: 14px; line-height: 1.8; }
.footer-grid .f-links a { display: block; padding: 6px 0; font-size: 14px; color: #b9cdec; }
.footer-grid .f-links a:hover { color: #fff; }
.footer-grid .f-contact p { font-size: 14px; padding: 5px 0; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); margin-top: 36px; padding-top: 20px; text-align: center; font-size: 13px; color: #8aa3c8; }

/* ---------- 返回顶部 ---------- */
.to-top {
  position: fixed; right: 24px; bottom: 24px; width: 46px; height: 46px;
  border-radius: 50%; background: var(--primary); color: #fff; border: none; cursor: pointer;
  display: grid; place-items: center; box-shadow: var(--shadow-lg); opacity: 0; visibility: hidden;
  transition: .25s; z-index: 60;
}
.to-top.show { opacity: 1; visibility: visible; }
.to-top svg { width: 22px; height: 22px; }

/* ---------- 面包屑 / 内页英雄 ---------- */
.page-hero { background: linear-gradient(135deg, var(--primary-dark), var(--primary-light)); color: #fff; padding: 64px 0 56px; }
.page-hero h1 { font-size: 34px; font-weight: 800; margin-bottom: 10px; }
.page-hero p { color: #cfe0f5; max-width: 640px; }
.breadcrumb { font-size: 13px; color: #9fb8da; margin-bottom: 16px; }
.breadcrumb a { color: #9fb8da; }
.breadcrumb a:hover { color: #fff; }

/* 资质列表 */
.qual-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.qual-item { display: flex; gap: 14px; background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 18px 20px; }
.qual-item .q-ic { width: 42px; height: 42px; border-radius: 10px; background: var(--bg-soft); color: var(--accent); display: grid; place-items: center; flex: none; }
.qual-item .q-ic svg { width: 22px; height: 22px; }
.qual-item b { display: block; color: var(--primary-dark); font-size: 15px; }
.qual-item p { color: var(--muted); font-size: 13px; }

/* 时间线 */
.timeline { position: relative; padding-left: 30px; }
.timeline::before { content: ""; position: absolute; left: 9px; top: 4px; bottom: 4px; width: 2px; background: var(--border); }
.tl-item { position: relative; padding: 0 0 26px 8px; }
.tl-item::before { content: ""; position: absolute; left: -25px; top: 5px; width: 14px; height: 14px; border-radius: 50%; background: var(--accent); border: 3px solid #fff; box-shadow: 0 0 0 2px var(--accent); }
.tl-item .year { font-weight: 800; color: var(--primary); }
.tl-item h4 { margin: 2px 0 4px; font-size: 16px; }
.tl-item p { color: var(--muted); font-size: 14px; }

/* 筛选 */
.filter-bar { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-bottom: 36px; }
.filter-bar button { padding: 9px 20px; border-radius: 30px; border: 1px solid var(--border); background: #fff; color: var(--text); font-weight: 600; cursor: pointer; transition: .2s; font-size: 14px; }
.filter-bar button.active, .filter-bar button:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ---------- 响应式 ---------- */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-card { margin-top: 10px; }
  .svc-grid, .proj-grid { grid-template-columns: repeat(2, 1fr); }
  .adv-card { flex: 1 1 260px; max-width: 360px; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .two-col, .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .topbar .tb-right { display: none; }
  .nav { position: fixed; top: var(--header-h); left: 0; right: 0; background: #fff; flex-direction: column; padding: 14px 20px; gap: 4px; box-shadow: var(--shadow-lg); transform: translateY(-120%); transition: transform .3s ease; border-bottom: 1px solid var(--border); }
  .nav.open { transform: translateY(0); }
  .nav a { padding: 12px; }
  .nav-toggle { display: flex; }
  .hero h1 { font-size: 30px; }
  .section { padding: 56px 0; }
  .section-head h2 { font-size: 26px; }
  .svc-grid, .proj-grid, .steps, .qual-grid { grid-template-columns: 1fr; }
  .adv-card { flex: 1 1 100%; max-width: 100%; }
  .footer-grid { grid-template-columns: 1fr; }
  .cta-band { padding: 30px 24px; }
  .job-item { flex-direction: column; align-items: flex-start; }
}

/* ---------- 新增：案例 / 资质 / 相册 / 灯箱 ---------- */
.proj-thumb { height: 200px; overflow: hidden; }
.proj-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.proj-card .view-more { display: inline-block; margin-top: 12px; color: var(--accent); font-weight: 700; font-size: 13.5px; }

.about-banner .container { padding: 0; }
.about-banner img { width: 100%; max-height: 460px; object-fit: cover; }

.cert-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-bottom: 28px; }
.cert-card { position: relative; border-radius: var(--radius-sm); overflow: hidden; cursor: pointer; box-shadow: var(--shadow); border: 1px solid var(--border); background: #fff; }
.cert-card img { width: 100%; height: 220px; object-fit: contain; background: #f7f9fc; }
.cert-card span { position: absolute; left: 0; right: 0; bottom: 0; background: linear-gradient(transparent, rgba(10,39,80,.85)); color: #fff; font-size: 13px; padding: 18px 12px 8px; }
.cert-pdf-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px 24px; margin: 6px 0 26px; }
.cert-pdf-list a { color: var(--primary); font-size: 14.5px; font-weight: 600; }
.cert-pdf-list a:hover { color: var(--accent); }
.qual-text { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 22px 26px; font-size: 15px; color: var(--muted); }
.qual-text b { color: var(--primary-dark); }

.promise-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.promise-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 28px 24px; position: relative; box-shadow: var(--shadow); }
.promise-card .pc-no { font-size: 30px; font-weight: 800; color: var(--bg-soft); line-height: 1; margin-bottom: 8px; }
.promise-card h4 { color: var(--primary); font-size: 18px; margin-bottom: 10px; }
.promise-card p { color: var(--muted); font-size: 14px; }

.quote-band { max-width: 880px; margin: 0 auto; text-align: center; position: relative; padding: 30px 20px; }
.quote-mark { font-size: 90px; color: var(--primary-light); opacity: .25; line-height: .4; font-family: Georgia, serif; }
.quote-band blockquote { font-size: 20px; line-height: 1.9; color: var(--primary-dark); font-weight: 600; margin: 6px 0 16px; }
.quote-by { color: var(--accent); font-weight: 700; }

.photo-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.photo-grid .ph { border-radius: var(--radius-sm); overflow: hidden; cursor: pointer; box-shadow: var(--shadow); aspect-ratio: 4/3; background: #f1f4f8; display: grid; place-items: center; }
.photo-grid .ph img { width: 100%; height: 100%; object-fit: contain; transition: transform .3s ease; }
.photo-grid.banners .ph img,
.photo-grid.products .ph img { object-fit: cover; }
.photo-grid .ph:hover img { transform: scale(1.06); }

/* ---------- 合作供应商 ---------- */
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; align-items: stretch; }
.partner-card {
  background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 22px; box-shadow: var(--shadow);
  display: grid; place-items: center; aspect-ratio: 4/3;
  transition: transform .2s ease, box-shadow .2s ease;
  overflow: hidden;
}
.partner-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.partner-card img { max-width: 100%; max-height: 220px; width: auto; height: auto; object-fit: contain; }
@supports not (aspect-ratio: 4/3) {
  .partner-card { min-height: 220px; }
}

.lightbox { position: fixed; inset: 0; background: rgba(8,18,34,.93); display: none; align-items: center; justify-content: center; z-index: 300; padding: 20px; }
.lightbox.open { display: flex; }
.lightbox img { max-width: 92%; max-height: 82vh; border-radius: 10px; box-shadow: 0 20px 60px rgba(0,0,0,.5); }
.lightbox .lb-close { position: absolute; top: 16px; right: 26px; color: #fff; font-size: 38px; background: none; border: none; cursor: pointer; line-height: 1; }
.lightbox .lb-nav { position: absolute; top: 50%; transform: translateY(-50%); color: #fff; font-size: 42px; background: none; border: none; cursor: pointer; padding: 10px 18px; opacity: .8; }
.lightbox .lb-nav:hover { opacity: 1; }
.lightbox .lb-prev { left: 8px; }
.lightbox .lb-next { right: 8px; }
.lightbox .lb-count { position: absolute; bottom: 18px; left: 50%; transform: translateX(-50%); color: #cfe0f5; font-size: 14px; }

@media (max-width: 980px) {
  .cert-grid, .promise-grid { grid-template-columns: repeat(2, 1fr); }
  .photo-grid { grid-template-columns: repeat(3, 1fr); }
  .partner-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .cert-grid, .promise-grid, .cert-pdf-list, .photo-grid { grid-template-columns: 1fr; }
  .partner-grid { grid-template-columns: 1fr; }
}

/* 公司宣传视频 */
.intro-video-section { background: linear-gradient(180deg, var(--bg-soft) 0%, var(--white) 100%); }
.intro-video { max-width: 960px; margin: 6px auto 0; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-lg); background: var(--primary-dark); }
.intro-video video { display: block; width: 100%; height: auto; }

.footer-bottom .beian { margin-top: 8px; font-size: 12px; }
.footer-bottom .beian a { color: #8aa3c8; text-decoration: underline; }