/* ==========================================================================
   华那科技官网 - 公共组件样式
   ========================================================================== */

/* ===================== 顶部条（联系方式） ===================== */
.topbar {
  background-color: var(--color-bg-gray);
  border-bottom: 1px solid var(--color-border-light);
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  height: 36px;
  display: flex;
  align-items: center;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: calc(var(--z-header) + 1);
}

.topbar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}

.topbar-welcome {
  color: var(--color-text-muted);
}

.topbar-links {
  display: flex;
  gap: var(--space-6);
}

.topbar-links a {
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.topbar-links a:hover {
  color: var(--color-primary);
}

.topbar-phone {
  color: var(--color-primary) !important;
  font-weight: var(--fw-semibold);
}

@media (max-width: 767px) {
  .topbar-welcome { display: none; }
  .topbar-links { gap: var(--space-4); }
}

/* ===================== 主导航 ===================== */
.header-wrapper {
  position: fixed;
  top: 36px;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  box-shadow: 0 4px 16px rgba(0, 31, 63, 0.08);
  background-color: rgba(255, 255, 255, 0.98);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
}

.header {
  background-color: #fff;
  border-bottom: 1px solid var(--color-border-light);
  transition: box-shadow 0.3s ease, background-color 0.3s ease;
}

/* 吸顶后:加上阴影,让导航更"浮"（已废弃，导航固定定位后始终生效） */

.header > .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
  text-decoration: none;
}

.logo:hover { color: inherit; }

.logo-image {
  height: 48px;
  width: auto;
  max-width: 280px;
  display: block;
}

.logo-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: var(--fw-bold);
  font-size: var(--fs-lg);
  box-shadow: 0 2px 8px rgba(230, 0, 0, 0.25);
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.logo-name {
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  color: var(--color-text);
  letter-spacing: 0.5px;
}

.logo-tagline {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  margin-top: 2px;
  letter-spacing: 1px;
}

/* 主菜单 */
.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  list-style: none;
  margin: 0;
  padding: 0;
}

.main-nav > li {
  list-style: none;
}

.main-nav > li::marker {
  content: '';
}

.main-nav a {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  height: 80px;
  padding: 0 var(--space-5);
  font-size: var(--fs-base);
  color: var(--color-text);
  position: relative;
  font-weight: var(--fw-medium);
  transition: color var(--transition-fast);
}}

.main-nav a::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 24px;
  width: 0;
  height: 3px;
  background-color: var(--color-primary);
  border-radius: 2px;
  transform: translateX(-50%);
  transition: width var(--transition-base);
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-primary);
}

.main-nav a:hover::after,
.main-nav a.active::after {
  width: 28px;
}

/* 移动端菜单按钮 */
.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  border-radius: var(--radius-md);
  background-color: var(--color-bg-gray);
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 1px;
  transition: all var(--transition-base);
}

.menu-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 991px) {
  .header > .container { height: 64px; }
  .logo-image { height: 40px; max-width: 220px; }
  .logo-icon { width: 36px; height: 36px; font-size: var(--fs-base); }
  .logo-name { font-size: var(--fs-base); }
  .logo-tagline { display: none; }
  .main-nav { display: none; }
  .menu-toggle { display: flex; }

  /* 移动端下拉菜单 */
  .main-nav.mobile-open {
    display: flex;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background-color: #fff;
    border-top: 1px solid var(--color-border-light);
    box-shadow: var(--shadow-lg);
    padding: var(--space-2) 0;
    gap: 0;
  }

  .main-nav.mobile-open a {
    width: 100%;
    height: 48px;
    padding: 0 var(--container-padding);
    border-bottom: 1px solid var(--color-border-light);
  }

  .main-nav.mobile-open a:last-child {
    border-bottom: none;
  }

  .main-nav.mobile-open a::after { display: none; }
}

/* ===================== 红色服务承诺条 ===================== */
.commitment-bar {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  padding: var(--space-8) 0;
  position: relative;
  overflow: hidden;
}

.commitment-bar::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(255, 255, 255, 0.08) 0%, transparent 50%);
  pointer-events: none;
}

.commitment-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.commitment-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: #fff;
}

.commitment-icon {
  width: 48px;
  height: 48px;
  background-color: rgba(255, 255, 255, 0.18);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.commitment-icon svg {
  width: 24px;
  height: 24px;
  color: #fff;
}

.commitment-text strong {
  display: block;
  font-size: var(--fs-md);
  font-weight: var(--fw-bold);
  margin-bottom: 2px;
}

.commitment-text span {
  display: block;
  font-size: var(--fs-xs);
  opacity: 0.85;
}

@media (max-width: 767px) {
  .commitment-inner {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }
}

@media (max-width: 480px) {
  .commitment-inner { grid-template-columns: 1fr; }
}

/* ===================== 详情页「服务承诺」版块统一红色背景 =====================
   覆盖 platform / engineering 详情页各自的深蓝渐变（含内联 <style> 与行内 style），
   与全站红色承诺条 .commitment-bar 风格保持一致 */
.ps-commitment,
.cabling-commitment,
.video-commitment,
.pev-commitment,
.pe-commitment,
.pv-commitment,
.psf-commitment {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%) !important;
  color: #fff !important;
}
/* 卡片图标原为品牌红（含内联 stroke="#e60000" 硬编码），红底上不可见，统一改为白色。
   注意：SVG 内联 presentation attribute 优先级最低，!important 规则可压制内联红色。 */
.ps-commitment svg,
.cabling-commitment svg,
.video-commitment svg,
.pev-commitment svg,
.pe-commitment svg,
.pv-commitment svg,
.psf-commitment svg,
.ps-commitment-card svg,
.cabling-commitment-card svg,
.video-commitment-card svg,
.pev-commitment-card svg,
.pe-commitment-card svg,
.pv-commitment-card svg,
.psf-commitment-card svg,
.ps-commitment svg *,
.cabling-commitment svg *,
.video-commitment svg *,
.pev-commitment svg *,
.pe-commitment svg *,
.pv-commitment svg *,
.psf-commitment svg * {
  color: #fff !important;
  stroke: #fff !important;
}
/* psf 卡片图标底色原为红，红底上改为白色微透，hover 同步提亮 */
.psf-commitment-card svg {
  background: rgba(255, 255, 255, 0.12) !important;
  border-color: rgba(255, 255, 255, 0.25) !important;
}
.psf-commitment-card:hover svg {
  background: rgba(255, 255, 255, 0.20) !important;
  border-color: rgba(255, 255, 255, 0.5) !important;
}
.psf-commitment-card:hover {
  border-color: rgba(255, 255, 255, 0.4) !important;
}
.psf-commitment-card::before {
  background: linear-gradient(90deg, transparent, #fff, transparent) !important;
}

/* 承诺标题下的红色装饰短横线（base.css 全局 .section-title h2::after 为品牌红），
   红底上统一改白色。覆盖全部 7 个版块类，避免平台系列中 pev/pe/pv/psf 仍显红 */
.ps-commitment .section-title h2::after,
.cabling-commitment .section-title h2::after,
.video-commitment .section-title h2::after,
.pev-commitment .section-title h2::after,
.pe-commitment .section-title h2::after,
.pv-commitment .section-title h2::after,
.psf-commitment .section-title h2::after {
  background-color: #fff !important;
}

/* 工程系列承诺卡片标题/描述参照平台系列改白（原为橙/青色，红底上不符；描述统一 0.7） */
.cabling-commitment .cc-item h4,
.video-commitment .vc-item h4,
.pev-commitment .vc-item h4,
.pe-commitment .vc-item h4,
.pv-commitment .vc-item h4,
.psf-commitment .vc-item h4 {
  color: #fff !important;
}
.cabling-commitment .cc-item p,
.video-commitment .vc-item p,
.pev-commitment .vc-item p,
.pe-commitment .vc-item p,
.pv-commitment .vc-item p,
.psf-commitment .vc-item p {
  color: rgba(255, 255, 255, 0.7) !important;
}

/* ===================== 内页 Banner ===================== */
.page-banner {
  position: relative;
  height: 360px;
  background: linear-gradient(135deg, var(--color-tech-blue-dark) 0%, var(--color-tech-blue) 100%);
  color: #fff;
  display: flex;
  align-items: center;
  overflow: hidden;
}

/* 带背景图片的 banner 版本:加暗色蒙版让文字可读 */
.page-banner--image {
  background-size: cover;
  background-position: center;
}

.page-banner--image::before {
  background-image:
    linear-gradient(135deg, rgba(0, 31, 63, 0.75) 0%, rgba(0, 61, 122, 0.65) 100%),
    repeating-linear-gradient(45deg, transparent 0 10px, rgba(255, 255, 255, 0.02) 10px 20px) !important;
}

.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 61, 122, 0.7), rgba(0, 102, 204, 0.85)),
    repeating-linear-gradient(45deg, transparent 0 10px, rgba(255, 255, 255, 0.03) 10px 20px);
  z-index: 0;
}

.page-banner::after {
  content: '';
  position: absolute;
  right: -50px;
  top: 50%;
  transform: translateY(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
  z-index: 0;
}

.page-banner .container {
  position: relative;
  z-index: 1;
}

.page-banner h1 {
  font-size: var(--fs-4xl);
  color: #fff;
  margin-bottom: var(--space-3);
  font-weight: var(--fw-bold);
}

.page-banner .banner-subtitle {
  font-size: var(--fs-md);
  opacity: 0.9;
  margin-bottom: var(--space-5);
}

.page-banner .banner-en {
  display: inline-block;
  font-size: var(--fs-sm);
  letter-spacing: 2px;
  opacity: 0.6;
  text-transform: uppercase;
  border-left: 2px solid var(--color-primary);
  padding-left: var(--space-3);
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-sm);
  color: rgba(255, 255, 255, 0.85);
  margin-top: var(--space-4);
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.85);
}

.breadcrumb a:hover {
  color: #fff;
}

.breadcrumb-sep {
  opacity: 0.5;
}

.breadcrumb-current {
  color: #fff;
  font-weight: var(--fw-medium);
}

@media (max-width: 767px) {
  .page-banner { height: 260px; }
  .page-banner h1 { font-size: var(--fs-2xl); }
}

/* ===================== 卡片 ===================== */
.card {
  background-color: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  border: 1px solid var(--color-border-light);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.card-image {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  background-color: var(--color-bg-gray);
  overflow: hidden;
}

.card-image img,
.card-image svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card-body {
  padding: var(--space-5);
}

.card-title {
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
  margin-bottom: var(--space-2);
  color: var(--color-text);
  line-height: 1.4;
}

.card-desc {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ===================== 页脚 ===================== */
.footer {
  background-color: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding: var(--space-16) 0 0;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.7fr 0.85fr 0.85fr 1.15fr 1.15fr 0.65fr;
  gap: var(--space-5);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid var(--color-footer-border);
}

.footer-brand .logo {
  margin-bottom: var(--space-4);
  align-items: center;
}

.footer-brand .logo-image {
  height: 56px;
  max-width: 320px;
  /* 页脚深色背景上，logo 加浅色发光提亮 */
  filter: brightness(0) invert(1);
  opacity: 0.95;
}

.footer-brand .logo-name { color: #fff; }
.footer-brand .logo-tagline { color: var(--color-footer-text); }

.footer-brand-desc {
  font-size: var(--fs-sm);
  line-height: 1.8;
  color: var(--color-footer-text);
  margin-bottom: var(--space-5);
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
  font-size: var(--fs-sm);
  color: var(--color-footer-text);
}

.footer-contact-item svg {
  width: 16px;
  height: 16px;
  color: var(--color-primary);
  margin-top: 3px;
  flex-shrink: 0;
}

.footer-col h4 {
  color: var(--color-footer-heading);
  font-size: var(--fs-md);
  margin-bottom: var(--space-5);
  position: relative;
  padding-bottom: var(--space-3);
}

.footer-col h4::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 24px;
  height: 2px;
  background-color: var(--color-primary);
}

/* 平台清单拆成两列时，第二列用隐形标题占位，保证列表起始线对齐 */
.footer-col-ghost {
  visibility: hidden;
}

.footer-col ul li {
  margin-bottom: var(--space-3);
}

.footer-col ul li a {
  color: var(--color-footer-text);
  font-size: var(--fs-sm);
  transition: color var(--transition-fast);
  /* 页脚列宽固定，长条目（如"智慧展厅指挥中心工程"）接近满宽，
     禁止换行，避免 hover 时因宽度变化被挤成两行 */
  white-space: nowrap;
}

.footer-col ul li a:hover {
  color: var(--color-primary);
  /* 原写法是 padding-left: 4px，会实际增加盒子宽度导致折行；
     改用相对定位做同样的右移视觉，不参与布局计算 */
  position: relative;
  left: 4px;
}

/* 品牌列内的官方微信二维码 */
.footer-brand-qr {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

.footer-qr {
  flex-shrink: 0;
  width: 112px;
  height: 112px;
  background-color: #fff;
  border-radius: var(--radius-md);
  padding: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.footer-qr-img {
  display: block;
  width: 100%;
  height: 100%;
  /* 二维码图片：等比完整显示，不能裁切（裁掉定位角就扫不出来了） */
  object-fit: contain;
  border-radius: var(--radius-sm);
}

.footer-qr-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-qr-title {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-footer-heading);
}

.footer-qr-sub {
  font-size: var(--fs-xs);
  color: var(--color-footer-text);
}

.footer-bottom {
  padding: var(--space-5) 0;
  text-align: center;
  font-size: var(--fs-sm);
  color: var(--color-footer-text);
}

.footer-bottom a {
  color: var(--color-footer-text);
  margin: 0 var(--space-2);
}

.footer-bottom a:hover {
  color: var(--color-primary);
}

@media (max-width: 991px) {
  .footer-top {
    grid-template-columns: 1fr 1fr 1fr;
    gap: var(--space-6);
  }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 767px) {
  .footer { padding-top: var(--space-10); }
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
  }
  .footer-brand { grid-column: 1 / -1; }
  .footer-col h4 { margin-bottom: var(--space-3); }
}

@media (max-width: 480px) {
  .footer-top { grid-template-columns: 1fr; }
}

/* ===================== 回到顶部 ===================== */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 44px;
  height: 44px;
  background-color: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-base);
  z-index: var(--z-sticky);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-2px);
}

/* ===================== 通用 placeholder ===================== */
.placeholder-image {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #E0E5EC 0%, #C8CFD8 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #6B7280;
  font-size: var(--fs-sm);
  position: relative;
  overflow: hidden;
}

.placeholder-image::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(45deg, rgba(255, 255, 255, 0.2) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(255, 255, 255, 0.2) 25%, transparent 25%);
  background-size: 20px 20px;
  opacity: 0.5;
}

.placeholder-image span {
  position: relative;
  z-index: 1;
  background-color: rgba(255, 255, 255, 0.9);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  font-size: var(--fs-xs);
}

/* ==========================================================================
   合作客户 logo 墙（案例页 + 首页共用，原定义在 pages/cases.css，
   因首页也要用而移到公共层，避免首页额外引入整份 cases.css）
   ========================================================================== */
.clients-section {
  background: var(--color-bg-soft);
}

.clients-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--space-4);
}

.client-logo {
  aspect-ratio: 16 / 9;
  background: #fff;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  transition: all var(--transition-base);
  cursor: default;
  overflow: hidden;
}

.client-logo img {
  max-width: 85%;
  max-height: 75%;
  width: auto;
  height: auto;
  object-fit: contain;
  transition: all 0.3s ease;
}

.client-logo-lg img {
  max-width: 95%;
  max-height: 90%;
}

.client-logo-xl img {
  max-width: 100%;
  max-height: 100%;
}

.client-logo:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.client-logo:hover img {
  transform: scale(1.06);
}

@media (max-width: 991px) {
  .clients-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 600px) {
  .clients-grid { grid-template-columns: repeat(3, 1fr); }
}