/* ============================================
   华智精工科技 - 公共样式 v2
   ============================================ */

/* ---- CSS Variables ---- */
:root {

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 28px;

  --container: 1440px;
  --header-h: 76px;
  --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.25s ease;
  --transition-smooth: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --dropdown-open-dur: 250ms;
  --dropdown-close-dur: 150ms;
  --dropdown-pre-scale: 0.97;
  --dropdown-closing-scale: 0.99;
  --dropdown-ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'Segoe UI', system-ui, -apple-system, sans-serif;
  color: var(--c-text);
  background: var(--c-white);
  line-height: 1.7;
  overflow-x: hidden;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; height: auto; display: block; }
img[src*="trae-api-cn"] {
  min-height: 160px;
  background: linear-gradient(135deg, var(--c-brand-200) 0%, var(--c-brand-100) 50%, var(--c-brand-50) 100%);
  background-size: 200% 200%;
  animation: imgShimmer 1.5s ease infinite;
}
@keyframes imgShimmer {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
/* Background image placeholder for hero and banners */
.hero-slide,
.page-banner-bg,
.about-home-visual,
.news-img,
.product-img,
.gallery-item {
  background-color: var(--c-brand-100);
}
a { color: inherit; text-decoration: none; transition: var(--transition-fast); }
a:hover { color: var(--c-primary-text); }
ul, ol { list-style: none; }
button { border: none; outline: none; cursor: pointer; font-family: inherit; background: transparent; }
input, textarea, select { font-family: inherit; outline: none; }

/* Keyboard users need the same clear affordance as mouse users. */
:focus-visible {
  outline: 3px solid var(--c-focus);
  outline-offset: 3px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ---- Container ---- */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
}

/* ---- Section ---- */
.section { padding: 110px 0; }
.section-sm { padding: 70px 0; }

.section-header { text-align: center; margin-bottom: 60px; }

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 22px;
  background: linear-gradient(135deg, var(--c-brand-50), var(--c-brand-100));
  color: var(--c-primary-text);
  border-radius: 50px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  margin-bottom: 22px;
  text-transform: uppercase;
  position: relative;
}

.section-tag::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-accent-bright);
}

.section-title {
  font-size: 40px;
  font-weight: 800;
  color: var(--c-dark);
  letter-spacing: -0.5px;
  margin-bottom: 18px;
  line-height: 1.25;
}

.section-desc {
  font-size: 17px;
  color: var(--c-text-light);
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 38px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.5px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--c-on-primary);
  box-shadow: var(--shadow-button);
}
.btn-primary:hover {
  background: var(--c-primary-dark);
  transform: translateY(-3px);
  box-shadow: var(--shadow-button-hover);
  color: var(--c-on-primary);
}
.btn-primary::after {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.35), transparent);
  transition: left 0.6s ease;
}
.btn-primary:hover::after { left: 100%; }
.btn-primary:active { background: var(--c-primary-active); }

.btn-outline {
  background: transparent;
  color: var(--c-primary-text);
  border: 2px solid var(--c-primary);
}
.btn-outline:hover {
  background: var(--c-primary);
  color: var(--c-on-primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-button-hover);
}

.btn-white {
  background: #fff;
  color: var(--c-primary-text);
  box-shadow: var(--shadow-button);
}
.btn-white:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-button-hover);
  color: var(--c-primary-text);
}

.btn-ghost {
  background: rgba(255,255,255,0.12);
  color: var(--c-on-hero);
  border: 1px solid rgba(255,255,255,0.35);
  backdrop-filter: blur(10px);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.25);
  color: var(--c-on-hero);
  transform: translateY(-3px);
}

/* ============================================
   HEADER / 导航
   ============================================ */
/* Header palette is scoped in theme.less and switches with the existing state. */
.header {
  --header-ink: var(--c-nav-text);
  --header-dropdown-bg: var(--c-nav-glass);
  --header-dropdown-ink: var(--c-nav-text);
  --header-focus: var(--c-nav-accent);
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  height: var(--header-h);
  z-index: 1000;
  background: var(--c-nav-surface);
  transition: var(--transition);
  border-bottom: 1px solid var(--c-nav-border);
}

.home .header:not(.scrolled):not(.menu-open) {
  --header-ink: var(--c-nav-on-hero);
  --header-dropdown-bg: var(--c-nav-glass-hero);
  --header-dropdown-ink: var(--c-nav-on-hero);
  --header-focus: var(--c-nav-on-hero);
  background: transparent;
  border-bottom-color: transparent;
}

/* Blur a separate background layer so dropdowns can still sample the hero. */
.home .header:not(.scrolled):not(.menu-open)::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--c-nav-glass-hero);
  backdrop-filter: blur(var(--c-nav-glass-blur));
  -webkit-backdrop-filter: blur(var(--c-nav-glass-blur));
  pointer-events: none;
}

.header.scrolled {
  height: 64px;
  box-shadow: var(--c-nav-shadow);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo::before {
  content: '';
  display: block;
  height: 42px;
  aspect-ratio: 2401 / 651;
  background: url('../webimages/logo1.png') center / contain no-repeat;
}
.home .header:not(.scrolled):not(.menu-open) .logo::before,
.header.menu-open .logo::before { background-image: url('../webimages/logo2.png'); }
.logo > .logo-icon,
.logo > .logo-text,
.footer-logo > .logo-icon,
.footer-logo > .logo-text {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.logo-icon {
  width: 42px;
  height: 42px;
  background: var(--gradient-primary);
  border-radius: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-on-primary);
  font-size: 21px;
  font-weight: 800;
  box-shadow: 0 4px 16px rgba(var(--c-primary-rgb),0.35);
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}
.logo-icon::before {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  width: 28px; height: 28px;
  border: 2px solid rgba(255,255,255,0.25);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.logo-text { display: flex; flex-direction: column; line-height: 1.15; flex-shrink: 0; }
.logo-text strong { font-size: 18px; font-weight: 700; color: var(--c-primary-dark-text); letter-spacing: 0.5px; }
.logo-text span { font-size: 10px; color: var(--c-text-light); letter-spacing: 2px; text-transform: uppercase; }

/* Nav */
.nav {
  display: flex;
  height: 100%;
  align-items: center;
  gap: 6px;
  flex: 1;
  justify-content: center;
  overflow: visible;
  position: relative;
  z-index: 100;
}

.nav-item { position: relative; flex-shrink: 0; }

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 10px 20px;
  font-size: 15px;
  font-weight: 500;
  color: var(--header-ink);
  border-radius: 4px;
  position: relative;
  transition: var(--transition-fast);
  white-space: nowrap;
  line-height: 1.4;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--c-nav-accent);
  border-radius: 2px;
  transition: width 0.3s ease;
}

.header .nav-link:hover,
.header .nav-link:focus-visible,
.header .nav-link.active { color: var(--c-nav-accent); }
.nav-link:hover::after, .nav-link:focus-visible::after, .nav-link.active::after { width: 16px; }
.header .nav > .nav-item:hover > .nav-link,
.header .nav > .nav-item:focus-within > .nav-link { color: var(--c-nav-accent); }
.nav > .nav-item:hover > .nav-link::after,
.nav > .nav-item:focus-within > .nav-link::after { width: 16px; }
/* Dropdown */
.nav .nav-item {
  position: relative;
  display: flex;
  height: 100%;
  align-items: center;
}

.nav-dropdown {
  position: absolute;
  top: calc(100% + 1px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 220px;
  background: var(--header-dropdown-bg);
  backdrop-filter: blur(var(--c-nav-glass-blur));
  -webkit-backdrop-filter: blur(var(--c-nav-glass-blur));
  border-radius: 0 0 6px 6px;
  box-shadow: var(--c-nav-dropdown-shadow);
  padding: 10px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  border: 1px solid var(--c-nav-glass-border);
  z-index: 1000;
  pointer-events: none;
}

.nav-item:hover .nav-dropdown,
.nav-item:focus-within .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

.nav-dropdown a {
  display: flex;
  align-items: center;
  padding: 11px 16px;
  border-radius: 4px;
  font-size: 14px;
  color: var(--header-dropdown-ink);
  transition: var(--transition-fast);
}
.header .nav-dropdown a:hover,
.header .nav-dropdown a:focus-visible,
.header .nav-dropdown a.is_hover {
  background: transparent;
  color: var(--c-nav-accent);
}

/* Header Actions */
.header-actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }

.header-phone {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 700;
  color: var(--header-ink);
  white-space: nowrap;
  padding: 8px 18px;
  border: 1px solid transparent;
  border-radius: 4px;
  background: transparent;
  transition: var(--transition-fast);
}
.header .header-phone:hover,
.header .header-phone:focus-visible {
  background: var(--c-nav-surface);
  color: var(--c-nav-accent);
  border-color: var(--c-nav-accent);
}
.header .btn-primary {
  background: var(--c-nav-accent);
  color: var(--c-nav-on-accent);
  border: 1px solid var(--c-nav-accent);
  box-shadow: none;
}
.header .btn-primary:hover,
.header .btn-primary:focus-visible {
  background: var(--c-nav-surface);
  color: var(--c-nav-accent);
  transform: none;
  box-shadow: none;
}
.home .header:not(.scrolled):not(.menu-open) .header-phone,
.home .header:not(.scrolled):not(.menu-open) .btn-primary {
  background: var(--c-nav-glass-hero);
  color: var(--c-nav-on-hero);
  border-color: var(--c-nav-glass-border);
}
.home .header:not(.scrolled):not(.menu-open) .header-phone:hover,
.home .header:not(.scrolled):not(.menu-open) .header-phone:focus-visible,
.home .header:not(.scrolled):not(.menu-open) .btn-primary:hover,
.home .header:not(.scrolled):not(.menu-open) .btn-primary:focus-visible {
  background: var(--c-nav-surface);
  color: var(--c-nav-accent);
  border-color: var(--c-nav-surface);
}

.search-btn {
  display: none;
}

/* Search Overlay */
.search-overlay {
  position: fixed;
  inset: 0;
  background: rgba(var(--c-primary-deepest-rgb),0.88);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 15vh;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}
.search-overlay.active { opacity: 1; visibility: visible; }

.search-box {
  width: 100%;
  max-width: 620px;
  display: flex;
  align-items: center;
  background: #fff;
  border-radius: 50px;
  padding: 7px 7px 7px 28px;
  box-shadow: var(--shadow-xl);
  transform: translateY(-30px);
  transition: transform 0.4s ease;
}
.search-overlay.active .search-box { transform: translateY(0); }
.search-box input { flex: 1; border: none; font-size: 16px; background: transparent; }
.search-box button {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: var(--c-on-primary);
  font-size: 18px;
  display: flex; align-items: center; justify-content: center;
}

.search-close {
  position: absolute;
  top: 30px; right: 30px;
  color: var(--c-on-hero);
  font-size: 24px;
  width: 48px; height: 48px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.3);
  display: flex; align-items: center; justify-content: center;
}

/* Mobile toggle */
.mobile-toggle {
  display: none;
  width: 42px; height: 42px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  border-radius: 8px;
  flex-shrink: 0;
}
.mobile-toggle span {
  width: 22px; height: 2px;
  background: var(--header-ink);
  border-radius: 2px;
  transition: var(--transition);
}
.mobile-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.mobile-toggle.active span:nth-child(2) { opacity: 0; }
.mobile-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Mobile Nav - hidden on desktop by default, shown on mobile via responsive.css */
.nav-mobile {
  display: none;
}

/* ============================================
   FOOTER / 页脚
   ============================================ */
.footer {
  background: var(--gradient-footer);
  color: var(--c-on-footer);
  padding: 70px 0 0;
  position: relative;
  overflow: hidden;
}
.footer::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--gradient-accent);
}
.footer-bg {
  position: absolute;
  top: 0; right: 0;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(var(--c-primary-rgb),0.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr 0.9fr;
  gap: 36px;
  position: relative;
  z-index: 1;
  align-items: start;
}

.footer-col h4 {
  color: var(--c-on-footer);
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 24px;
  position: relative;
  padding-bottom: 12px;
}
.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 30px; height: 2px;
  background: var(--c-accent-bright);
}

.footer-logo { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.footer-logo-link { display: inline-block; color: inherit; text-decoration: none; }
.footer-logo-link:focus-visible { outline: 2px solid var(--c-on-footer); outline-offset: 4px; border-radius: 4px; }
.footer-logo::before {
  content: '';
  display: block;
  height: 48px;
  aspect-ratio: 2401 / 651;
  background: url('../webimages/logo2.png') center / contain no-repeat;
}
.footer-logo .logo-icon { background: var(--gradient-accent); }
.footer-desc { font-size: 14px; line-height: 1.8; margin-bottom: 24px; }

.footer-contact-row {
  display: flex;
  align-items: flex-start;
  gap: 30px;
  flex-wrap: wrap;
}

.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 14px;
  line-height: 1.6;
}
.footer .footer-contact-item a { color: inherit; }
.footer .footer-contact-item a:hover,
.footer .footer-contact-item a:focus-visible,
.footer .footer-contact-item a:active {
  color: var(--c-on-footer);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.footer-contact-item i {
  color: var(--c-on-footer);
  font-size: 16px;
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-style: normal;
}
.footer-contact-item .footer-contact-icon {
  display: block;
  width: 20px;
  height: 20px;
  flex: 0 0 20px;
  color: var(--c-on-footer);
}

.footer-links li { margin-bottom: 12px; }
.footer-links a {
  font-size: 14px;
  display: inline-block;
  transition: var(--transition-fast);
}
.footer-links a:hover { color: var(--c-on-footer); transform: translateX(6px); }
.footer a:focus-visible,
.footer button:focus-visible { outline: 2px solid var(--c-on-footer); outline-offset: 3px; }

.footer-qr {
  text-align: left;
  flex-shrink: 0;
}
.footer-qr-img {
  width: 110px; height: 110px;
  background: #fff;
  border-radius: 12px;
  margin: 0 0 10px 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 44px;
  color: var(--c-primary-text);
}
.footer-qr-img img {
  width: 100%;
  height: 100%;
  padding: 4px;
  border-radius: inherit;
  object-fit: contain;
}
.footer-qr p { font-size: 13px; text-align: left; }

.footer-bottom {
  margin-top: 56px;
  padding: 22px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom-links { display: flex; gap: 12px; flex-wrap: nowrap; align-items: center; white-space: nowrap; }
.footer-bottom-links a,
.footer-link-placeholder {
  color: var(--c-on-footer);
  font-size: 13px;
  text-decoration: none;
  text-underline-offset: 3px;
  transition: var(--transition-fast);
}
.footer-bottom-links a:hover,
.footer-bottom-links a:focus-visible { color: var(--c-on-footer); text-decoration: underline; }
.footer-links-label {
  color: var(--c-on-footer);
  font-size: 13px;
  margin-right: 0;
}
.footer-social { display: flex; gap: 12px; }

/* ============================================
   Breadcrumb
   ============================================ */
.breadcrumb-bar {
  padding: 14px 0;
  background: #fff;
  border-bottom: 1px solid var(--c-border);
  position: relative;
  z-index: 10;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--c-text-light);
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--c-text); }
.breadcrumb-home-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.breadcrumb-home-icon {
  width: 14px;
  height: 14px;
  flex: 0 0 14px;
}
.breadcrumb a:hover { color: var(--c-primary-text); }
.breadcrumb .sep { color: var(--c-text-light); }
.breadcrumb .current { color: var(--c-primary-text); font-weight: 500; }

/* Breadcrumb on pages with banner */
.page-banner + .breadcrumb-bar,
.page-banner ~ .breadcrumb-bar {
  background: linear-gradient(135deg, var(--c-brand-50) 0%, #fff 100%);
  border-bottom: 1px solid var(--c-border);
  position: relative;
  top: auto;
}
.page-banner + .breadcrumb-bar .breadcrumb,
.page-banner ~ .breadcrumb-bar .breadcrumb {
  color: var(--c-text-light);
}
.page-banner + .breadcrumb-bar .breadcrumb a,
.page-banner ~ .breadcrumb-bar .breadcrumb a {
  color: var(--c-text);
}
.page-banner + .breadcrumb-bar .breadcrumb a:hover,
.page-banner ~ .breadcrumb-bar .breadcrumb a:hover {
  color: var(--c-primary-text);
}
.page-banner + .breadcrumb-bar .breadcrumb .current,
.page-banner ~ .breadcrumb-bar .breadcrumb .current {
  color: var(--c-primary-text);
}

/* ---- Page Banner (sub pages) ---- */
.page-banner {
  height: 420px;
  background: var(--c-banner-base);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: 40px;
  color: var(--c-on-hero);
}
.page-banner-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 1;
}
.page-banner-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--c-banner-overlay);
  opacity: 1;
}
.page-banner-content { position: relative; z-index: 2; }
.page-banner h1,
.page-banner-title { font-size: 46px; font-weight: 800; margin-bottom: 14px; letter-spacing: 1px; }
.page-banner p { font-size: 18px; opacity: 0.85; max-width: 600px; margin: 0 auto; }

/* ============================================
   FLOATING SIDEBAR / 右侧悬浮
   ============================================ */
.floating-sidebar {
  position: fixed;
  right: 20px;
  bottom: 40px;
  z-index: 900;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.float-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  box-shadow: var(--shadow-button);
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.float-btn svg {
  width: 22px; height: 22px;
}

.float-btn span {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.float-call {
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-dark) 100%);
  color: var(--c-on-primary);
  animation: pulse-call 2s infinite;
}

@keyframes pulse-call {
  0%, 100% { box-shadow: var(--shadow-button); }
  50% { box-shadow: var(--shadow-button-pulse); }
}

.float-call:hover {
  transform: translateY(-4px) scale(1.08);
  box-shadow: var(--shadow-button-hover);
  animation: none;
}

.float-consult {
  background: var(--gradient-primary);
  color: var(--c-on-primary);
}

.float-consult:hover {
  transform: translateY(-4px) scale(1.08);
  box-shadow: var(--shadow-button-hover);
}

.float-top {
  background: var(--gradient-accent);
  color: var(--c-on-primary);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}
.float-top.show { opacity: 1; visibility: visible; }
.float-top:hover {
  transform: translateY(-4px) scale(1.08);
  box-shadow: var(--shadow-button-hover);
}

/* Keep the floating rail legible over every hover background. */
.float-btn:hover,
.float-btn:focus-visible,
.float-btn:hover svg,
.float-btn:focus-visible svg {
  color: var(--c-on-primary);
}
.float-btn:focus-visible { outline: 2px solid #fff; outline-offset: 3px; }

/* Float tooltip */
.float-tooltip {
  position: absolute;
  right: calc(100% + 10px);
  top: 50%;
  transform: translateY(-50%);
  background: var(--c-dark);
  color: var(--c-on-hero);
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 13px;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-fast);
  pointer-events: none;
}
.float-tooltip::after {
  content: '';
  position: absolute;
  right: -5px;
  top: 50%;
  transform: translateY(-50%);
  border-left: 6px solid var(--c-dark);
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
}
.float-btn:hover .float-tooltip { opacity: 1; visibility: visible; }

/* Float QR popup */
.float-qr-popup {
  position: absolute;
  right: calc(100% + 10px);
  top: 50%;
  transform: translateY(-50%) scale(0.8);
  background: #fff;
  border-radius: 14px;
  padding: 16px;
  box-shadow: var(--shadow-xl);
  text-align: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  pointer-events: none;
  border: 1px solid var(--c-border);
}
.float-qr:hover .float-qr-popup { opacity: 1; visibility: visible; transform: translateY(-50%) scale(1); }
.float-qr-popup .qr-img {
  width: 140px; height: 140px;
  background: var(--c-brand-50);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 56px; color: var(--c-primary-text);
  margin-bottom: 8px;
}
.float-qr-popup p { font-size: 13px; color: var(--c-text-light); }

/* ---- Back to Top (legacy, replaced by float-top) ---- */
.back-to-top { display: none; }

/* ============================================
   ANIMATIONS / 动画
   ============================================ */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(40px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeInLeft { from { opacity: 0; transform: translateX(-40px); } to { opacity: 1; transform: translateX(0); } }
@keyframes fadeInRight { from { opacity: 0; transform: translateX(40px); } to { opacity: 1; transform: translateX(0); } }
@keyframes scaleIn { from { opacity: 0; transform: scale(0.9); } to { opacity: 1; transform: scale(1); } }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-15px); } }
@keyframes pulse { 0%, 100% { transform: scale(1); opacity: 1; } 50% { transform: scale(1.05); opacity: 0.8; } }
@keyframes rotate { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

/* Scroll Reveal */
.reveal { opacity: 0; transform: translateY(40px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.reveal-left { transform: translateX(-40px); }
.reveal-right { transform: translateX(40px); }
.reveal-scale { transform: scale(0.9); }
.reveal-left.is-visible, .reveal-right.is-visible { transform: translateX(0); }
.reveal-scale.is-visible { transform: scale(1); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ---- Utility ---- */
.text-center { text-align: center; }
.bg-light { background: var(--c-bg); }
.bg-dark { background: var(--c-dark); }
.mt-0 { margin-top: 0; }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.gap-2 { gap: 8px; }
.gap-4 { gap: 16px; }

/* ============================================
   PREMIUM ENHANCEMENTS / 高端美化增强
   ============================================ */

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: var(--c-bg);
}
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--c-primary-light), var(--c-accent-bright));
  border-radius: 5px;
  border: 2px solid var(--c-bg);
}
::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--c-primary), var(--c-accent));
}

/* Selection */
::selection {
  background: var(--c-primary);
  color: var(--c-on-primary);
}
::-moz-selection {
  background: var(--c-primary);
  color: var(--c-on-primary);
}

/* Image placeholder shimmer enhanced */
img {
  background: linear-gradient(110deg, #f0f0f0 8%, #f5f5f5 18%, #f0f0f0 33%);
  background-size: 200% 100%;
  animation: imgShimmer 1.5s ease infinite;
}
img[src] {
  animation: none;
  background: none;
}

/* Premium card glow effect */
.feature-card::after,
.product-card::after,
.news-card::after,
.value-card::after,
.cert-item::after,
.contact-info-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(var(--c-primary-rgb),0) 0%, rgba(var(--c-primary-rgb),0.3) 50%, rgba(var(--c-primary-rgb),0) 100%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}
.feature-card:hover::after,
.product-card:hover::after,
.news-card:hover::after,
.value-card:hover::after,
.cert-item:hover::after,
.contact-info-card:hover::after {
  opacity: 1;
}

/* Premium button shine */
.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.6s ease;
  z-index: 1;
}
.btn-primary:hover::before {
  left: 100%;
}
.btn-primary > * {
  position: relative;
  z-index: 2;
}

/* Section decorative elements */
.section-header {
  position: relative;
}
.section-header::before {
  content: '';
  position: absolute;
  bottom: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--gradient-accent);
  border-radius: 2px;
}

/* Premium number counter */
.stat-number {
  position: relative;
  display: inline-block;
}
.stat-number::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 2px;
  background: var(--gradient-accent);
  border-radius: 1px;
}

/* Smooth page load */
body {
  animation: pageFadeIn 0.6s ease;
}
@keyframes pageFadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Focus states for accessibility */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--c-focus);
  outline-offset: 2px;
}

/* 输入控件保留各自的焦点样式，不显示浏览器默认 outline。 */
input:focus,
input:focus-visible,
select:focus,
select:focus-visible,
textarea:focus,
textarea:focus-visible {
  outline: none;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Semantic list-card wrapper: the existing card remains the visual grid item. */
.list-card-item { display: contents; }
/* Local SVG icon contract */
.icon {
  display: inline-block;
  width: 1em;
  height: 1em;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
  vertical-align: -0.125em;
}
.footer-bottom > div:first-child > a { color: inherit; text-decoration: none; }
.footer-bottom > div:first-child > a:hover,
.footer-bottom > div:first-child > a:focus-visible { color: var(--c-on-footer); text-decoration: underline; text-underline-offset: 3px; }

.icon.icon-play { fill: currentColor; stroke: none; }
.icon.icon-ui { width: 1.1em; height: 1.1em; }
.footer-contact-item .icon,
.search-bar-icon .icon,
.nav-icon .icon,
.cat-icon .icon,
.route-icon .icon,
.route-addr-icon .icon,
.feature-icon .icon,
.value-icon .icon,
.cert-icon .icon,
.hl-icon .icon,
.badge-icon .icon,
.news-meta .icon,
.article-meta .icon,
.share-buttons .icon {
  vertical-align: middle;
}

/* Footer social QR cards */
.t-dropdown {
  transform-origin: top left;
  transform: scale(var(--dropdown-pre-scale));
  opacity: 0;
  pointer-events: none;
  transition:
    transform var(--dropdown-open-dur) var(--dropdown-ease),
    opacity   var(--dropdown-open-dur) var(--dropdown-ease);
  will-change: transform, opacity;
}
.t-dropdown[data-origin="top-right"]     { transform-origin: top right; }
.t-dropdown[data-origin="top-center"]    { transform-origin: top center; }
.t-dropdown[data-origin="bottom-left"]   { transform-origin: bottom left; }
.t-dropdown[data-origin="bottom-center"] { transform-origin: bottom center; }
.t-dropdown[data-origin="bottom-right"]  { transform-origin: bottom right; }
.t-dropdown.is-open {
  transform: scale(1);
  opacity: 1;
  pointer-events: auto;
}
.t-dropdown.is-closing {
  transform: scale(var(--dropdown-closing-scale));
  opacity: 0;
  pointer-events: none;
  transition:
    transform var(--dropdown-close-dur) var(--dropdown-ease),
    opacity   var(--dropdown-close-dur) var(--dropdown-ease);
}
@media (prefers-reduced-motion: reduce) {
  .t-dropdown { transition: none !important; }
}

.footer-social { position: relative; align-items: center; overflow: visible; }
.footer-social-item { position: relative; flex: 0 0 38px; }
.footer-social .footer-social-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  padding: 0;
  border: 0;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--c-on-footer);
  cursor: pointer;
  transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}
.footer-social .footer-social-trigger:hover,
.footer-social .footer-social-trigger:focus-visible,
.footer-social .footer-social-trigger[aria-expanded="true"] {
  background: var(--gradient-accent);
  color: var(--c-on-footer);
  transform: translateY(-3px);
  outline: 0;
}
.footer-social-svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.footer-social-svg--solid { fill: currentColor; stroke: none; }
.footer-social-linkedin strong { font-size: 14px; line-height: 1; }
.footer-social-card {
  position: absolute;
  left: 50%;
  right: auto;
  bottom: calc(100% + 16px);
  z-index: 20;
  width: 164px;
  margin-left: -82px;
  padding: 10px 10px 9px;
  border: 0;
  border-radius: 10px;
  background: #fff;
  box-shadow: 0 12px 26px rgba(0, 0, 0, 0.24);
  color: #525252;
  text-align: center;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(8px) scale(.96);
  transition: opacity 180ms ease, transform 180ms ease, visibility 180ms ease;
}
.footer-social-card.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}
.footer-social-card.is-closing { pointer-events: none; }
.footer-social-card.t-dropdown[data-origin] { transform-origin: bottom center; }
.footer-social-card::after { position: absolute; bottom: -8px; left: 50%; width: 0; height: 0; margin-left: -8px; border: 8px solid transparent; border-top-color: #fff; border-bottom: 0; content: ''; }
.footer-social-card img { width: 144px; height: 144px; border-radius: 4px; object-fit: cover; }
.footer-social-card span { display: block; margin-top: 6px; color: #525252; font-size: 13px; line-height: 20px; white-space: nowrap; }

/* Header focus rings follow the transparent / light / mobile state. */
.header a:focus-visible,
.header .mobile-toggle:focus-visible {
  outline: 2px solid var(--header-focus);
  outline-offset: 3px;
}
/* White focus rings stay visible against the brand backgrounds. */
.hero .btn:focus-visible,
.cta-section .btn:focus-visible,
.default-business .business-hero-actions .btn:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 3px;
}