/* ============================================================
   中航华信官网 — sections.css
   各板块布局样式（导航 / Hero / 数据带 / 关于 / 业务 / 智慧消防
   / 资质 / 团队 / 案例 / 联系 / 页脚）
   ============================================================ */

/* ============ 顶部导航 ============ */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-h);
  transition: background .35s var(--ease), box-shadow .35s var(--ease);
}
.nav-inner {
  max-width: 1420px;
  margin: 0 auto;
  padding: 0 32px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
/* 关键防护：子项默认不被压缩，否则空间不足时文字会被挤成竖排 */
.nav-inner > * { flex-shrink: 0; }

.site-nav.scrolled {
  background: rgba(255, 255, 255, .88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 4px 24px rgba(6, 30, 54, .1);
}

.brand { display: flex; align-items: center; gap: 12px; color: #fff; flex-shrink: 0; }
.site-nav.scrolled .brand { color: var(--navy); }
.brand-mark { transition: transform .5s var(--ease); }
.brand:hover .brand-mark { transform: rotate(15deg); }

.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-cn { font-size: 19px; font-weight: 700; letter-spacing: 3px; }
.brand-en {
  font-family: var(--font-en);
  font-size: 9px;
  letter-spacing: 2.6px;
  opacity: .72;
}

.nav-links { display: flex; gap: 24px; flex-wrap: nowrap; }
.nav-links a {
  position: relative;
  padding: 8px 0;
  font-size: 14.5px;
  white-space: nowrap;
  letter-spacing: 1px;
  color: #fff;
  transition: color .3s;
}
.site-nav.scrolled .nav-links a { color: var(--text-dark); }

.nav-links a::after {
  content: "";
  position: absolute;
  left: 50%; bottom: 0;
  width: 0; height: 2px;
  background: var(--gold);
  transform: translateX(-50%);
  transition: width .3s var(--ease);
}
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-links a.active { color: var(--gold); }

/* 中英切换 */
.lang-switch {
  position: relative;
  z-index: 1002; /* 与汉堡同级，移动端菜单打开时仍可点 */
  display: flex;
  align-items: center;
  gap: 1px;
  margin-left: 28px;
}
.lang-btn {
  font-family: var(--font-en);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  padding: 6px 8px;
  color: #fff;
  opacity: .65;
  transition: color .3s, opacity .3s;
}
.lang-btn:hover { opacity: 1; }
.lang-btn.active { color: var(--gold); opacity: 1; }
.lang-sep { color: rgba(255, 255, 255, .35); font-size: 13px; }
.site-nav.scrolled .lang-btn { color: var(--text-dark); }
.site-nav.scrolled .lang-sep { color: rgba(22, 33, 43, .25); }
.nav-open .lang-btn { color: #fff; }
.nav-open .lang-sep { color: rgba(255, 255, 255, .35); }

/* 汉堡按钮（默认隐藏，移动端显示） */
.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; z-index: 1002; }
.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform .3s var(--ease), opacity .3s;
}
.site-nav.scrolled .nav-toggle span,
.nav-open .nav-toggle span { background: var(--navy); }
.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============ Hero ============ */
.hero {
  position: relative;
  height: 100vh;
  min-height: 640px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--navy-deep); /* 视频加载前的底色 */
}

/* 宣传片循环背景（30 秒自动播放） */
.hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(105deg,
    rgba(6, 30, 54, .85) 26%,
    rgba(11, 42, 74, .5) 58%,
    rgba(11, 42, 74, .22) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  color: #fff;
  padding-top: var(--nav-h);
}

.hero-en {
  font-family: var(--font-en);
  font-size: 14px;
  letter-spacing: 7px;
  color: var(--gold);
  margin-bottom: 22px;
  animation: riseUp .9s var(--ease) both;
}

.hero-title {
  font-size: clamp(48px, 8.5vw, 96px);
  letter-spacing: 10px;
  line-height: 1.15;
  animation: riseUp .9s var(--ease) .15s both;
}

.hero-gold-line {
  width: 64px; height: 3px;
  background: var(--gold);
  margin: 26px 0;
  animation: riseUp .9s var(--ease) .3s both;
}

.hero-slogan {
  font-size: clamp(19px, 2.6vw, 27px);
  font-weight: 600;
  letter-spacing: 3px;
  margin-bottom: 10px;
  animation: riseUp .9s var(--ease) .42s both;
}

.hero-sub {
  font-size: 15px;
  letter-spacing: 2px;
  color: rgba(232, 238, 245, .78);
  margin-bottom: 42px;
  animation: riseUp .9s var(--ease) .54s both;
}

.hero-cta { display: flex; gap: 18px; animation: riseUp .9s var(--ease) .66s both; }

@keyframes riseUp {
  from { opacity: 0; transform: translateY(34px); }
  to   { opacity: 1; transform: none; }
}

.hero-scroll {
  position: absolute;
  left: 50%; bottom: 34px;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, .85);
  z-index: 2;
  animation: bounceDown 2s ease-in-out infinite;
  transition: color .3s;
}
.hero-scroll:hover { color: var(--gold); }
@keyframes bounceDown {
  0%, 100% { transform: translate(-50%, 0); }
  50%      { transform: translate(-50%, 10px); }
}

/* ============ 数据带 ============ */
.stats-band {
  background: linear-gradient(160deg, var(--navy-deep) 0%, var(--navy) 55%, #123a63 100%);
  padding: 84px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 28px;
  text-align: center;
}

.stat-num {
  display: block;
  font-family: var(--font-en);
  font-size: clamp(40px, 4.6vw, 58px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--gold);
  letter-spacing: 1px;
}

.stat-label {
  display: block;
  margin-top: 10px;
  font-size: 14px;
  letter-spacing: 2px;
  color: rgba(232, 238, 245, .8);
}

/* ============ 关于我们 ============ */
.about { background: var(--gray-bg); }

.about-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 72px;
  align-items: center;
  margin-bottom: 88px;
}

.about-text p {
  margin-bottom: 18px;
  color: #33414e;
  font-size: 16px;
}
.about-text strong { color: var(--navy); }

.about-frame {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-card-hover);
}
.about-frame::before {
  content: "";
  position: absolute;
  top: -14px; right: -14px;
  width: 100%; height: 100%;
  border: 2px solid var(--gold);
  border-radius: var(--radius);
  z-index: 0;
  pointer-events: none;
}
.about-frame img {
  position: relative;
  z-index: 1;
  width: 100%;
  aspect-ratio: 1104 / 724;
  object-fit: cover;
  transition: transform .8s var(--ease);
}
.about-frame:hover img { transform: scale(1.04); }

/* 三跟文化横条 */
.culture-band {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  background: linear-gradient(120deg, var(--navy-deep), var(--navy));
  border-radius: var(--radius);
  padding: 42px 32px;
  margin-bottom: 56px;
  text-align: center;
}
.culture-quote {
  font-family: Georgia, serif;
  font-size: 44px;
  line-height: 0;
  color: var(--gold);
  opacity: .9;
}
.culture-text {
  font-size: clamp(20px, 2.6vw, 28px);
  font-weight: 700;
  letter-spacing: 4px;
  color: #fff;
}

/* 愿景/使命/价值观 */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 26px;
}

.value-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 38px 30px;
  text-align: center;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
  overflow: hidden;
}
.value-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s var(--ease);
}
.value-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}
.value-card:hover::before { transform: scaleX(1); }

.value-title {
  font-size: 19px;
  letter-spacing: 2px;
  color: var(--navy);
  margin-bottom: 14px;
}
.value-text { color: var(--text-gray); font-size: 15px; }

.about-style {
  text-align: center;
  color: var(--gold);
  letter-spacing: 2px;
  font-size: 15px;
  margin-bottom: 72px;
}

/* 业务版图 chips */
.biz-map { text-align: center; margin-bottom: 76px; }
.biz-map-title {
  font-size: 15px;
  letter-spacing: 4px;
  color: var(--text-gray);
  margin-bottom: 24px;
}
.biz-chips { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; }
.chip {
  padding: 10px 26px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 40px;
  font-size: 15px;
  letter-spacing: 2px;
  color: #33414e;
  transition: border-color .3s, color .3s, transform .3s var(--ease), box-shadow .3s;
}
.chip:hover {
  border-color: var(--gold);
  color: var(--navy);
  transform: translateY(-2px);
  box-shadow: 0 8px 18px rgba(201, 165, 76, .18);
}

/* 里程碑时间线 */
.milestones {
  position: relative;
  max-width: 860px;
  margin: 0 auto;
}
.milestones::before {
  content: "";
  position: absolute;
  left: 9px; top: 8px; bottom: 8px;
  width: 2px;
  background: linear-gradient(var(--gold), rgba(201, 165, 76, .15));
}
.milestone {
  position: relative;
  padding: 0 0 34px 48px;
}
.milestone:last-child { padding-bottom: 0; }
.milestone-dot {
  position: absolute;
  left: 0; top: 6px;
  width: 20px; height: 20px;
  border-radius: 50%;
  border: 2px solid var(--gold);
  background: var(--gray-bg);
  transition: background .3s, box-shadow .3s;
}
.milestone:hover .milestone-dot {
  background: var(--gold);
  box-shadow: 0 0 0 6px rgba(201, 165, 76, .18);
}
.milestone-tag {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--gold);
  background: rgba(201, 165, 76, .1);
  border-radius: 3px;
  padding: 2px 10px;
  margin-bottom: 8px;
}
.milestone-text {
  font-size: 16px;
  color: #33414e;
}

/* ============ 业务服务 ============ */
.services { background: #fff; }

/* tab 按钮 */
.tab-btns {
  display: flex;
  justify-content: center;
  gap: 46px;
  margin-bottom: 56px;
  border-bottom: 1px solid var(--line);
}
.tab-btn {
  position: relative;
  padding: 14px 6px 18px;
  font-size: 17px;
  letter-spacing: 3px;
  color: var(--text-gray);
  transition: color .3s;
}
.tab-btn::after {
  content: "";
  position: absolute;
  left: 50%; bottom: -1px;
  width: 0; height: 3px;
  background: var(--gold);
  transform: translateX(-50%);
  transition: width .35s var(--ease);
}
.tab-btn:hover { color: var(--navy); }
.tab-btn.active { color: var(--navy); font-weight: 700; }
.tab-btn.active::after { width: 100%; }

.tab-panel { display: none; }
.tab-panel.active { display: block; animation: panelIn .5s var(--ease); }
@keyframes panelIn {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: none; }
}

/* 工程施工卡片 */
.svc-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.svc-card {
  position: relative;
  background: var(--gray-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px 28px;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), background .35s;
  overflow: hidden;
}
.svc-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-soft));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s var(--ease);
}
.svc-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  background: #fff;
}
.svc-card:hover::before { transform: scaleX(1); }

.svc-title {
  font-size: 19px;
  letter-spacing: 2px;
  color: var(--navy);
  margin-bottom: 10px;
}
.svc-qual {
  display: inline-block;
  font-size: 12.5px;
  color: var(--gold);
  background: rgba(201, 165, 76, .1);
  border-radius: 3px;
  padding: 3px 10px;
  letter-spacing: 1px;
  margin-bottom: 14px;
}
.svc-desc { font-size: 14.5px; color: var(--text-gray); }

.svc-note {
  margin-top: 34px;
  text-align: center;
  font-size: 14.5px;
  color: var(--text-gray);
  letter-spacing: 1px;
}

/* 维护维保面板 */
.maint-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.maint-title {
  font-size: 26px;
  letter-spacing: 2px;
  color: var(--navy);
  margin-bottom: 18px;
}
.maint-text { color: var(--text-gray); margin-bottom: 26px; }
.maint-badges { display: flex; flex-wrap: wrap; gap: 14px; }
.maint-badge {
  padding: 9px 20px;
  border: 1px solid var(--gold);
  border-radius: 40px;
  color: var(--navy);
  font-size: 14px;
  letter-spacing: 1px;
  background: rgba(201, 165, 76, .06);
}
.maint-cards { display: flex; flex-direction: column; gap: 18px; }
.maint-card {
  background: var(--gray-bg);
  border-left: 3px solid var(--gold);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 20px 24px;
  transition: transform .3s var(--ease), box-shadow .3s;
}
.maint-card:hover { transform: translateX(6px); box-shadow: var(--shadow-card); }
.maint-card h4 { color: var(--navy); letter-spacing: 2px; margin-bottom: 6px; }
.maint-card p { font-size: 14px; color: var(--text-gray); }

/* 智慧消防功能网格 */
.smart-features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.smart-feature {
  background: var(--gray-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 24px;
  text-align: center;
  transition: transform .35s var(--ease), box-shadow .35s, border-color .35s;
}
.smart-feature:hover {
  transform: translateY(-4px);
  border-color: var(--gold);
  box-shadow: var(--shadow-card);
}
.sf-icon {
  display: block;
  width: 12px; height: 12px;
  margin: 0 auto 16px;
  background: var(--gold);
  transform: rotate(45deg);
  border-radius: 2px;
}
.smart-feature h4 {
  color: var(--navy);
  letter-spacing: 2px;
  font-size: 16.5px;
  margin-bottom: 8px;
}
.smart-feature p { font-size: 13.5px; color: var(--text-gray); }

/* 十项闭环 */
.closed-loop { margin-top: 96px; text-align: center; }
.loop-title {
  font-size: 20px;
  letter-spacing: 4px;
  color: var(--navy);
  margin-bottom: 46px;
}
.loop-track {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  position: relative;
}
.loop-track::before {
  content: "";
  position: absolute;
  top: 8px; left: 5%; right: 5%;
  height: 1px;
  background: repeating-linear-gradient(90deg, var(--line) 0 10px, transparent 10px 18px);
}
.loop-node {
  position: relative;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}
.loop-dot {
  width: 17px; height: 17px;
  border-radius: 50%;
  border: 2px solid #C4CDD6;
  background: #fff;
  transition: border-color .4s, background .4s, box-shadow .4s;
}
.loop-node.lit .loop-dot {
  border-color: var(--gold);
  background: var(--gold);
  box-shadow: 0 0 0 6px rgba(201, 165, 76, .18), 0 0 14px rgba(201, 165, 76, .5);
}
.loop-node p {
  font-size: 13.5px;
  letter-spacing: 1px;
  color: var(--text-gray);
  transition: color .4s;
}
.loop-node.lit p { color: var(--navy); font-weight: 600; }
.loop-note {
  margin-top: 38px;
  font-size: 15px;
  letter-spacing: 2px;
  color: var(--gold);
}

/* ============ 智慧消防·远程值守 ============ */
.smart {
  background: linear-gradient(165deg, var(--navy-deep) 0%, var(--navy) 60%, #123a63 100%);
  color: #fff;
}

.smart-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
  margin-bottom: 72px;
}

.smart-lead {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--gold);
  margin-bottom: 24px;
}
.smart-para {
  color: rgba(232, 238, 245, .85);
  margin-bottom: 14px;
  font-size: 15.5px;
}
.smart-hl { color: #fff; font-weight: 700; }

.smart-media {
  position: relative;
  padding-right: 46px;
  padding-bottom: 46px;
}
.smart-img-main {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: 0 24px 60px rgba(4, 14, 26, .55);
}
.smart-img-sub {
  position: absolute;
  right: 0; bottom: 0;
  width: 46%;
  border: 3px solid var(--gold);
  border-radius: var(--radius);
  box-shadow: 0 18px 44px rgba(4, 14, 26, .5);
}

.smart-cases {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.smart-case {
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(201, 165, 76, .35);
  border-radius: var(--radius);
  padding: 26px 22px;
  transition: transform .35s var(--ease), background .35s, border-color .35s;
}
.smart-case:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, .09);
  border-color: var(--gold);
}
.sc-title {
  font-size: 16px;
  letter-spacing: 1px;
  color: #fff;
  margin-bottom: 10px;
  line-height: 1.5;
}
.sc-tag {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 1.5px;
  color: var(--gold);
  border: 1px solid rgba(201, 165, 76, .5);
  border-radius: 3px;
  padding: 2px 10px;
  margin-bottom: 12px;
}
.sc-desc { font-size: 13.5px; color: rgba(232, 238, 245, .72); }

/* ============ 资质荣誉 ============ */
.quals { background: var(--gray-bg); }

.cert-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-bottom: 56px;
}
.cert-badge {
  padding: 10px 24px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 40px;
  font-size: 14px;
  letter-spacing: 1.5px;
  color: var(--navy);
  transition: border-color .3s, transform .3s var(--ease), box-shadow .3s;
}
.cert-badge:hover {
  border-color: var(--gold);
  transform: translateY(-2px);
  box-shadow: 0 8px 18px rgba(201, 165, 76, .18);
}

.cert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.cert-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px;
  cursor: zoom-in;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s;
}
.cert-item:hover {
  transform: translateY(-4px);
  border-color: var(--gold);
  box-shadow: var(--shadow-card-hover);
}
.cert-img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: contain;
  background: #FAFBFC;
}
.cert-hint {
  margin-top: 34px;
  text-align: center;
  font-size: 13.5px;
  color: var(--text-gray);
  letter-spacing: 1px;
}

/* ============ 灯箱 ============ */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(4, 14, 26, .94);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: lbIn .3s var(--ease);
}
.lightbox[hidden] { display: none; }
@keyframes lbIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
.lb-img {
  max-width: min(88vw, 720px);
  max-height: 86vh;
  object-fit: contain;
  border-radius: 4px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, .6);
}
.lb-close, .lb-prev, .lb-next {
  position: absolute;
  color: rgba(255, 255, 255, .85);
  font-size: 34px;
  line-height: 1;
  padding: 14px;
  transition: color .3s, transform .3s;
  font-family: var(--font-en);
}
.lb-close:hover, .lb-prev:hover, .lb-next:hover { color: var(--gold); }
.lb-close { top: 18px; right: 26px; }
.lb-prev { left: 18px; top: 50%; transform: translateY(-50%); }
.lb-next { right: 18px; top: 50%; transform: translateY(-50%); }
.lb-prev:hover { transform: translateY(-50%) translateX(-3px); }
.lb-next:hover { transform: translateY(-50%) translateX(3px); }

/* ============ 团队专家 ============ */
.team { background: #fff; }

.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 88px;
}
.member-card {
  position: relative;
  background: var(--gray-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), background .35s;
  overflow: hidden;
}
.member-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-soft));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s var(--ease);
}
.member-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  background: #fff;
}
.member-card:hover::before { transform: scaleX(1); }

.member-avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px; height: 64px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: var(--navy);
  color: var(--gold);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0;
}
.member-name {
  font-size: 19px;
  letter-spacing: 3px;
  color: var(--navy);
  margin-bottom: 6px;
}
.member-role {
  font-size: 13.5px;
  letter-spacing: 1.5px;
  color: var(--blue-bright);
  margin-bottom: 10px;
}
.member-cred {
  display: inline-block;
  font-size: 12px;
  color: var(--gold);
  background: rgba(201, 165, 76, .1);
  border-radius: 3px;
  padding: 2px 10px;
  margin-bottom: 14px;
}
.member-desc {
  font-size: 13px;
  color: var(--text-gray);
  text-align: left;
  line-height: 1.7;
}

/* 组织架构 */
.org-chart { text-align: center; }
.org-title {
  font-size: 20px;
  letter-spacing: 4px;
  color: var(--navy);
  margin-bottom: 40px;
}
.org-tree {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}
.org-node {
  display: inline-block;
  padding: 12px 26px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-size: 14.5px;
  letter-spacing: 1.5px;
  color: var(--navy);
  position: relative;
  transition: border-color .3s, transform .3s var(--ease), box-shadow .3s;
  white-space: nowrap;
}
.org-node:hover {
  border-color: var(--gold);
  transform: translateY(-2px);
  box-shadow: 0 8px 18px rgba(201, 165, 76, .16);
}
.org-root {
  background: var(--navy);
  color: #fff;
  border-color: var(--navy);
  font-weight: 700;
  padding: 14px 34px;
}
.org-mid { margin-top: 34px; }
.org-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: 34px;
  position: relative;
}
.org-row::before {
  content: "";
  position: absolute;
  top: -17px; left: 50%;
  width: 1.5px; height: 17px;
  background: var(--blue-bright);
}
.org-tree > .org-mid::after {
  content: "";
  display: block;
  width: 1.5px; height: 17px;
  background: var(--blue-bright);
  margin: 0 auto;
}

/* ============ 客户与案例 ============ */
.cases { background: var(--gray-bg); }

/* 客户墙 marquee */
.client-wall {
  overflow: hidden;
  position: relative;
  margin-bottom: 84px;
  padding: 26px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.client-wall::before, .client-wall::after {
  content: "";
  position: absolute;
  top: 0; bottom: 0;
  width: 90px;
  z-index: 1;
  pointer-events: none;
}
.client-wall::before { left: 0; background: linear-gradient(90deg, var(--gray-bg), transparent); }
.client-wall::after { right: 0; background: linear-gradient(-90deg, var(--gray-bg), transparent); }

.client-track {
  display: flex;
  align-items: center;
  gap: 74px;
  width: max-content;
  animation: marquee 42s linear infinite;
}
.client-wall:hover .client-track { animation-play-state: paused; }
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
.client-item {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 3px;
  color: #93A1AE;
  white-space: nowrap;
  transition: color .3s;
}
.client-item:hover { color: var(--navy); }

/* 案例列表 */
.case-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.case-item {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 24px;
  transition: transform .3s var(--ease), box-shadow .3s, border-color .3s;
}
.case-item:hover {
  transform: translateY(-3px);
  border-color: var(--gold);
  box-shadow: var(--shadow-card);
}
.case-num {
  font-family: var(--font-en);
  font-size: 26px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--gold);
  flex-shrink: 0;
}
.case-item p {
  font-size: 14.5px;
  color: #33414e;
  line-height: 1.7;
}
.case-note {
  margin-top: 30px;
  text-align: center;
  font-size: 14px;
  color: var(--text-gray);
  letter-spacing: 1px;
}

/* ============ 联系我们 ============ */
.contact {
  background: linear-gradient(170deg, var(--navy-deep) 0%, var(--navy) 65%, #123a63 100%);
  color: #fff;
  overflow: hidden;
}
.contact-decor {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(201, 165, 76, .06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 165, 76, .06) 1px, transparent 1px);
  background-size: 56px 56px;
  pointer-events: none;
}
.contact-decor::after {
  content: "";
  position: absolute;
  left: 50%; top: 50%;
  width: 620px; height: 620px;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(201, 165, 76, .14), transparent 65%);
  pointer-events: none;
}

.contact-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  position: relative;
  z-index: 1;
}
.contact-card {
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(201, 165, 76, .35);
  border-radius: var(--radius);
  padding: 36px 24px;
  text-align: center;
  transition: transform .35s var(--ease), background .35s, border-color .35s;
}
a.contact-card { display: block; }
.contact-card:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, .09);
  border-color: var(--gold);
}
.cc-icon {
  color: var(--gold);
  margin-bottom: 18px;
}
.cc-label {
  font-size: 13px;
  letter-spacing: 3px;
  color: rgba(232, 238, 245, .65);
  margin-bottom: 10px;
}
.cc-value {
  font-size: 16px;
  letter-spacing: 1px;
  color: #fff;
  word-break: break-all;
}

/* ============ 页脚 ============ */
.footer {
  background: var(--navy-deep);
  color: rgba(232, 238, 245, .75);
  padding: 52px 0 40px;
}
.footer-inner { text-align: center; }
.footer-brand {
  display: flex;
  justify-content: center;
  margin-bottom: 28px;
}
.footer .brand { color: #fff; }
.footer .brand-cn { font-size: 15px; letter-spacing: 2px; }
.footer .brand-en { font-size: 8px; }
.footer-links {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-bottom: 30px;
}
.footer-links a {
  font-size: 14px;
  letter-spacing: 2px;
  transition: color .3s;
}
.footer-links a:hover { color: var(--gold); }

/* 员工入口 —— 内部系统入口，DOM 上紧接页脚导航。
   视觉上比导航弱一档（描边胶囊、小一号字 + 淡一档的色），
   不抢公开内容的注意力，员工扫一眼又能找到。 */
.footer-staff {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 26px;
}
.footer-staff-title {
  font-size: 12.5px;
  letter-spacing: 3px;
  color: rgba(232, 238, 245, .45);
}
.footer-staff-link {
  font-size: 12.5px;
  letter-spacing: 1.5px;
  padding: 5px 14px;
  border: 1px solid rgba(201, 165, 76, .4);
  border-radius: 999px;
  color: var(--gold-soft);
  transition: color .3s, background-color .3s, border-color .3s;
}
.footer-staff-link:hover {
  color: var(--navy-deep);
  background-color: var(--gold);
  border-color: var(--gold);
}
.footer-copy { font-size: 12.5px; letter-spacing: 1px; }
.footer-icp {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 1px;
  color: rgba(232, 238, 245, .45);
}
.footer-icp a { color: inherit; text-decoration: none; }
.footer-icp a:hover { text-decoration: underline; }

/* ============================================================
   产品目录 · 2026-10-08 新增
   ============================================================ */
.products { background: #F4F6F9; }

/* --- 分类筛选 --- */
.prod-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin: 0 0 40px;
}
.prod-tab {
  padding: 9px 20px;
  font: inherit;
  font-size: 13px;
  color: var(--navy);
  background: transparent;
  border: 1px solid var(--navy);
  border-radius: 999px;
  cursor: pointer;
  transition: background .25s, color .25s, border-color .25s;
}
.prod-tab:hover { background: rgba(11,42,74,.06); }
.prod-tab.active {
  background: var(--navy);
  color: #fff;
  border-color: var(--navy);
}
.prod-tab:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

/* --- 商品网格 --- */
.prod-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 26px;
}

.prod-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid rgba(11,42,74,.10);
  border-radius: 4px;
  overflow: hidden;
  transition: transform .3s, box-shadow .3s, border-color .3s;
}
.prod-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 34px rgba(11,42,74,.12);
  border-color: var(--gold);
}
.prod-card.is-hidden { display: none; }

.prod-media {
  position: relative;
  aspect-ratio: 4 / 3;
  background: var(--navy-deep);
  overflow: hidden;
}
.prod-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.prod-tag {
  position: absolute;
  top: 10px;
  left: 10px;
  padding: 4px 9px;
  font-size: 11px;
  letter-spacing: .4px;
  color: var(--gold-soft);
  background: rgba(6,30,54,.78);
  border: 1px solid rgba(201,165,76,.5);
  border-radius: 2px;
}

.prod-body {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 20px;
  flex: 1;
}
.prod-name {
  margin: 0;
  font-size: 16px;
  font-weight: 500;
  color: var(--navy);
  line-height: 1.45;
}

.prod-specs {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 6px;
}
.prod-specs li {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-size: 13px;
  color: var(--navy);
  opacity: .82;
  padding-bottom: 6px;
  border-bottom: 1px dashed rgba(11,42,74,.13);
}
.prod-specs span { color: rgba(11,42,74,.55); }
.prod-specs b { font-weight: 500; }

.prod-desc {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(11,42,74,.68);
  flex: 1;
}

.prod-cta {
  display: block;
  padding: 11px 18px;
  font-size: 13px;
  font-weight: 500;
  text-align: center;
  text-decoration: none;
  color: #fff;
  background: var(--navy);
  border-radius: 3px;
  transition: background .25s;
}
.prod-cta:hover { background: var(--gold); color: var(--navy-deep); }
.prod-cta:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }

.prod-foot {
  margin: 34px 0 0;
  text-align: center;
  font-size: 13px;
  color: rgba(11,42,74,.55);
}

/* ============================================================
   在线商城入口按钮 · 2026-10-08
   ============================================================ */
.prod-entry {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 9px;
  margin: 0 0 34px;
}
.prod-entry-btn {
  padding: 14px 44px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 1px;
  text-decoration: none;
  color: var(--navy-deep);
  background: var(--gold);
  border-radius: 3px;
  transition: background .25s, transform .25s, box-shadow .25s;
}
.prod-entry-btn:hover {
  background: var(--gold-soft);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(201,165,76,.32);
}
.prod-entry-btn:focus-visible { outline: 2px solid var(--navy); outline-offset: 3px; }
.prod-entry-tip {
  font-size: 12.5px;
  color: rgba(11,42,74,.52);
  letter-spacing: .5px;
}

/* ============================================================
   企业新闻 + 消防信息 · 2026-10-08
   ============================================================ */
.news { background: #fff; }

.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 40px;
}

.news-col {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 28px 26px;
  background: #F8FAFC;
  border: 1px solid rgba(11,42,74,.09);
  border-top: 3px solid var(--gold);
  border-radius: 3px;
}

.news-col-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(11,42,74,.10);
}
.news-col-title {
  margin: 0;
  font-size: 18px;
  font-weight: 500;
  color: var(--navy);
  letter-spacing: .5px;
}
.news-more {
  font-size: 12.5px;
  color: var(--navy);
  text-decoration: none;
  opacity: .6;
  transition: opacity .25s, color .25s;
}
.news-more:hover { opacity: 1; color: var(--gold); }

.news-list { margin: 0; padding: 0; list-style: none; display: grid; gap: 2px; }

.news-item {
  display: flex;
  gap: 16px;
  padding: 15px 0;
  border-bottom: 1px dashed rgba(11,42,74,.12);
}
.news-item:last-child { border-bottom: none; }

.news-date {
  flex-shrink: 0;
  width: 62px;
  font-size: 12px;
  font-weight: 500;
  color: var(--gold);
  letter-spacing: .3px;
  padding-top: 2px;
  font-family: var(--font-mono, monospace);
}

.news-body { flex: 1; min-width: 0; }
.news-title {
  margin: 0 0 5px;
  font-size: 15px;
  font-weight: 500;
  color: var(--navy);
  line-height: 1.5;
}
.news-desc {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(11,42,74,.60);
}

.news-item--more { justify-content: center; padding: 16px 0 4px; }
.news-placeholder {
  font-size: 12.5px;
  color: rgba(11,42,74,.38);
  letter-spacing: .5px;
}

/* ============================================================
   顶部员工入口 · 2026-10-08
   默认对访客隐藏（display:none），仅登录本机后可见。
   原理：GitHub Pages 纯静态，无法做真密码校验。
   ============================================================ */
/* 员工入口 · 公开可见（用户 2026-10-09 明确：不隐藏）
   链接指向 auth.html —— 登录页，而非系统本体。
   访客点进去会看到「需扫码登录」，进不去系统内容。
   待迁腾讯轻量云后由后端校验飞书身份，静态阶段先做前端拦截。 */
.nav-staff {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  height: 30px;
  padding: 0 12px;
  font-size: 12.5px;
  color: var(--gold-soft);
  text-decoration: none;
  white-space: nowrap;
  border: 1px solid rgba(201,165,76,.55);
  border-radius: 3px;
  transition: background .25s, color .25s, border-color .25s;
}
.nav-staff::before {
  content: '';
  width: 5px; height: 5px;
  border-radius: 50%;
  background: currentColor;
  opacity: .8;
}
.nav-staff:hover {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--navy-deep);
}
/* 顶栏未滚动时是深色底，改为金色描边以保证可读 */
.site-nav:not(.scrolled) .nav-staff { color: var(--gold-soft); }

html[lang="en"] .nav-staff { letter-spacing: .5px; }