/* ==========================================================================
   深圳市中合智能有限公司 - 全站主样式
   设计风格：白底中性蓝调，简约专业
   主色：#1976D2  辅助：#0D47A1  浅蓝背景：#E3F2FD
   ========================================================================== */

/* ---------- CSS 变量 ---------- */
:root {
  --primary: #1976D2;
  --primary-dark: #0D47A1;
  --primary-light: #42A5F5;
  --primary-bg: #E3F2FD;
  --primary-bg2: #F0F7FF;
  --accent: #FF6F00;
  --text-main: #1A2130;
  --text-sub: #4A5568;
  --text-light: #718096;
  --border: #E2E8F0;
  --white: #FFFFFF;
  --bg-gray: #F7FAFC;
  --shadow-sm: 0 2px 8px rgba(25,118,210,0.08);
  --shadow-md: 0 4px 20px rgba(25,118,210,0.14);
  --shadow-lg: 0 8px 40px rgba(25,118,210,0.18);
  --radius: 12px;
  --radius-sm: 6px;
  --font: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
  --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font);
  color: var(--text-main);
  background: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; margin: 0; padding: 0; line-height: inherit; }

/* ---------- 通用布局容器 ---------- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding: 80px 0;
}
.section-sm {
  padding: 52px 0;
}

/* ---------- 通用标题 ---------- */
.section-header {
  text-align: center;
  margin-bottom: 52px;
}
.section-label {
  display: inline-block;
  background: var(--primary-bg);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  padding: 4px 16px;
  border-radius: 40px;
  margin-bottom: 14px;
  text-transform: uppercase;
}
.section-title {
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.3;
  margin-bottom: 14px;
}
.section-desc {
  font-size: 16px;
  color: var(--text-sub);
  max-width: 540px;
  margin: 0 auto;
}
.title-line {
  display: block;
  width: 52px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  border-radius: 4px;
  margin: 16px auto 0;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 40px;
  font-size: 15px;
  font-weight: 600;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(25,118,210,0.3);
}
.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: 0 6px 24px rgba(25,118,210,0.4);
  transform: translateY(-2px);
}
.btn-outline {
  border: 2px solid var(--white);
  color: var(--white);
}
.btn-outline:hover {
  background: var(--white);
  color: var(--primary);
  transform: translateY(-2px);
}
.btn-outline-blue {
  border: 2px solid var(--primary);
  color: var(--primary);
  padding: 10px 24px;
  border-radius: 40px;
  font-size: 14px;
  font-weight: 600;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn-outline-blue:hover {
  background: var(--primary);
  color: var(--white);
}

/* =============================================
   顶部公告栏
   ============================================= */
.top-bar {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.85);
  font-size: 13px;
  padding: 7px 0;
  text-align: center;
}
.top-bar a { color: rgba(255,255,255,0.85); }
.top-bar a:hover { color: var(--white); }
.top-bar-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
}

/* =============================================
   导航栏
   ============================================= */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--white);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}
.navbar.scrolled {
  box-shadow: 0 4px 20px rgba(25,118,210,0.12);
}
.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 16px;
}
/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}
.logo-icon svg { width: 26px; height: 26px; fill: white; }
.logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.logo-text .name { font-size: 17px; font-weight: 700; color: var(--primary-dark); letter-spacing: 0.5px; }
.logo-text .sub { font-size: 11px; color: var(--text-light); letter-spacing: 1px; }
.logo-img { height: 34px; width: auto; display: block; }
.footer-logo-img { height: 28px; width: auto; display: block; margin-bottom: 12px; }
/* 主导航菜单 */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-item {
  position: relative;
}
.nav-link {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-main);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  white-space: nowrap;
}
.nav-link:hover, .nav-link.active {
  color: var(--primary);
  background: var(--primary-bg);
}
.nav-link svg { width: 14px; height: 14px; transition: transform var(--transition); flex-shrink: 0; }
.nav-item:hover .nav-link svg,
.nav-item.open .nav-link svg { transform: rotate(180deg); }
/* 下拉菜单 */
.dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  min-width: 200px;
  padding: 8px;
  padding-top: 14px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
  background: transparent;
  border: none;
  box-shadow: none;
  z-index: 1100;
}
.dropdown::before {
  content: '';
  position: absolute;
  top: 8px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  z-index: 0;
}
.nav-item:hover .dropdown,
.nav-item.open .dropdown,
.nav-item:focus-within .dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
.dropdown a {
  display: block;
  position: relative;
  z-index: 1;
  padding: 10px 14px;
  font-size: 14px;
  color: var(--text-sub);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.dropdown a:hover {
  background: var(--primary-bg);
  color: var(--primary);
}
/* 右侧电话 */
.nav-phone {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-size: 16px;
  font-weight: 700;
  flex-shrink: 0;
}
.nav-phone svg { width: 18px; height: 18px; fill: var(--primary); }
/* 汉堡菜单 */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: all var(--transition);
}
.hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }
/* 移动端菜单覆盖层 */
.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  top: 68px;
  background: var(--white);
  z-index: 999;
  overflow-y: auto;
  padding: 24px;
  flex-direction: column;
  gap: 4px;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  display: block;
  padding: 13px 16px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-main);
  border-radius: var(--radius-sm);
  border-bottom: 1px solid var(--border);
}
.mobile-nav a:hover { background: var(--primary-bg); color: var(--primary); }
.mobile-nav-section { font-size: 12px; color: var(--text-light); padding: 8px 16px 4px; text-transform: uppercase; letter-spacing: 1px; }

/* =============================================
   Hero Banner（首页全屏）
   ============================================= */
.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-image: url('../images/hero/meeting-room.jpg');
  background-size: cover;
  background-position: center;
}
/* 深蓝渐变遮罩 - 确保文字清晰突出 */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(10,37,64,0.92) 0%, rgba(13,71,161,0.85) 40%, rgba(21,101,192,0.75) 70%, rgba(25,118,210,0.65) 100%),
    linear-gradient(to right, rgba(10,37,64,0.95) 0%, transparent 55%);
  z-index: 1;
}
.hero-bg-pattern {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(66,165,245,0.22) 0, transparent 55%),
    radial-gradient(circle at 80% 70%, rgba(13,71,161,0.18) 0, transparent 55%);
  pointer-events: none;
  z-index: 1;
}
/* 动态光晕 */
.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  animation: glowPulse 6s ease-in-out infinite alternate;
}
.hero-glow-1 {
  width: 500px; height: 500px;
  background: rgba(66,165,245,0.12);
  top: -100px; right: -100px;
}
.hero-glow-2 {
  width: 400px; height: 400px;
  background: rgba(13,71,161,0.2);
  bottom: -80px; left: -60px;
}
@keyframes glowPulse {
  from { transform: scale(1); opacity: 0.7; }
  to   { transform: scale(1.2); opacity: 1; }
}
.hero-content {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 60px;
  padding: 80px 0;
}
.hero-text { color: white; position: relative; z-index: 2; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 40px;
  padding: 8px 18px;
  font-size: 13px;
  color: rgba(255,255,255,0.95);
  margin-bottom: 28px;
  backdrop-filter: blur(12px);
  text-shadow: 0 1px 3px rgba(0,0,0,0.3);
}
.hero-badge-dot {
  width: 7px; height: 7px;
  background: var(--primary-light);
  border-radius: 50%;
  animation: blink 2s ease-in-out infinite;
}
@keyframes blink {
  0%,100% { opacity: 1; }
  50% { opacity: 0.3; }
}
.hero-title {
  font-size: clamp(38px, 5.5vw, 60px);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 24px;
  color: white;
  text-shadow:
    0 2px 12px rgba(0,0,0,0.25),
    0 4px 24px rgba(13,71,161,0.35);
  letter-spacing: 2px;
}
.hero-title em {
  font-style: normal;
  color: var(--primary-light);
  text-shadow:
    0 2px 12px rgba(0,0,0,0.3),
    0 0 40px rgba(66,165,245,0.25);
}
.hero-subtitle {
  font-size: 17px;
  color: rgba(255,255,255,0.88);
  margin-bottom: 36px;
  line-height: 1.8;
  text-shadow: 0 1px 6px rgba(0,0,0,0.2);
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 52px; }
.hero-stats {
  display: flex;
  gap: 36px;
  border-top: 1px solid rgba(255,255,255,0.15);
  padding-top: 28px;
}
.hero-stat-value { font-size: 32px; font-weight: 800; color: white; line-height: 1; }
.hero-stat-label { font-size: 13px; color: rgba(255,255,255,0.65); margin-top: 4px; }
/* 右侧卡片区 */
.hero-visual { display: flex; flex-direction: column; gap: 16px; }
.hero-card {
  background: rgba(255,255,255,0.09);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 18px;
  backdrop-filter: blur(12px);
  transition: transform var(--transition), background var(--transition);
  animation: slideInRight 0.6s ease both;
}
.hero-card:nth-child(1) { animation-delay: 0.2s; }
.hero-card:nth-child(2) { animation-delay: 0.35s; }
.hero-card:nth-child(3) { animation-delay: 0.5s; }
.hero-card:hover { background: rgba(255,255,255,0.14); transform: translateX(-4px); }
@keyframes slideInRight {
  from { opacity: 0; transform: translateX(30px); }
  to   { opacity: 1; transform: translateX(0); }
}
.hero-card-icon {
  width: 52px; height: 52px;
  background: rgba(255,255,255,0.12);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.hero-card-icon svg { width: 26px; height: 26px; fill: var(--primary-light); }
.hero-card-title { font-size: 15px; font-weight: 600; color: white; }
.hero-card-sub { font-size: 13px; color: rgba(255,255,255,0.65); margin-top: 2px; }
/* Hero 滚动指示 */
.hero-scroll {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: rgba(255,255,255,0.5);
  font-size: 12px;
  animation: bounceY 2s ease-in-out infinite;
}
.hero-scroll svg { width: 20px; height: 20px; fill: rgba(255,255,255,0.4); }
@keyframes bounceY {
  0%,100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* =============================================
   品牌 Ticker（合作品牌滚动条）
   ============================================= */
.brand-ticker {
  background: var(--bg-gray);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 24px 0;
  overflow: hidden;
}
.brand-ticker-label {
  text-align: center;
  font-size: 12px;
  color: var(--text-light);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.brand-track-wrap { overflow: hidden; }
.brand-track {
  display: flex;
  gap: 40px;
  align-items: center;
  animation: scrollBrands 22s linear infinite;
  width: max-content;
}
.brand-track:hover { animation-play-state: paused; }
@keyframes scrollBrands {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
.brand-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 12px;
  transition: all var(--transition);
  cursor: default;
  height: 56px;
}
.brand-logo img {
  max-height: 40px;
  width: auto;
  max-width: 120px;
  object-fit: contain;
  filter: brightness(0);
  opacity: 0.85;
  transition: all var(--transition);
}
.brand-logo:hover img {
  opacity: 1;
  transform: scale(1.05);
}
.brand-logo-invert img {
  filter: invert(1) brightness(0.95);
}
.brand-logo-plain {
  background: transparent !important;
  border: none !important;
  padding: 0 8px;
}

/* =============================================
   关于公司（数字展示）
   ============================================= */
.about-section { background: var(--white); }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.about-img-block {
  position: relative;
}
.about-img-main {
  width: 100%;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--primary-bg), var(--primary-bg2));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 120px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.about-img-badge {
  position: absolute;
  bottom: -16px;
  right: -16px;
  background: var(--primary);
  color: white;
  border-radius: 12px;
  padding: 18px 24px;
  box-shadow: var(--shadow-md);
}
.about-img-badge .num { font-size: 36px; font-weight: 800; line-height: 1; }
.about-img-badge .label { font-size: 13px; opacity: 0.85; }
.about-text { }
.about-intro {
  font-size: 16px;
  color: var(--text-sub);
  line-height: 1.9;
  margin-bottom: 32px;
}
.about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 36px;
  max-width: 420px;
}
.stat-card {
  background: var(--primary-bg2);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  border-left: 3px solid var(--primary);
  transition: transform var(--transition);
}
.stat-card:hover { transform: translateY(-4px); }
.stat-card .num {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}
.stat-card .label {
  font-size: 13px;
  color: var(--text-light);
  margin-top: 4px;
}

/* =============================================
   产品中心
   ============================================= */
.products-section { background: var(--bg-gray); }
.products-filter {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 44px;
}
.filter-btn {
  padding: 8px 20px;
  border-radius: 40px;
  font-size: 14px;
  font-weight: 500;
  border: 1.5px solid var(--border);
  color: var(--text-sub);
  background: var(--white);
  transition: all var(--transition);
  cursor: pointer;
}
.filter-btn:hover, .filter-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
  box-shadow: 0 4px 12px rgba(25,118,210,0.25);
}
.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.product-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border: 1px solid var(--border);
}
.product-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-6px);
  border-color: var(--primary-light);
}
.product-card-img {
  width: 100%;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--primary-bg) 0%, var(--primary-bg2) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 64px;
  position: relative;
  overflow: hidden;
}
.product-card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 60%, rgba(25,118,210,0.06));
}
.product-card-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--primary);
  color: white;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 20px;
  z-index: 1;
}
.product-card-body { padding: 18px 20px; }
.product-card-brand {
  font-size: 12px;
  color: var(--primary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}
.product-card-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 8px;
  line-height: 1.4;
}
.product-card-spec {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.6;
}
.product-card-footer {
  padding: 12px 20px 16px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.products-more { text-align: center; margin-top: 40px; }

/* =============================================
   产品中心 · 筛选侧边栏（a / button 统一行高）
   ============================================= */
.products-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 40px;
  align-items: start;
  margin-bottom: 60px;
}
.filter-sidebar {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  position: sticky;
  top: 88px;
  box-shadow: var(--shadow-sm);
}
.filter-group {
  border-bottom: 1px solid var(--border);
}
.filter-group:last-child { border-bottom: none; }
.filter-group-title {
  padding: 14px 20px;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-main);
  background: var(--bg-gray);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  border-bottom: 1px solid var(--border);
}
.filter-options {
  padding: 12px 0;
}
.filter-sidebar .filter-options > .filter-option {
  display: flex;
  align-items: center;
  gap: 10px;
  height: 36px;
  min-height: 36px;
  max-height: 36px;
  padding: 0 20px;
  margin: 0;
  font-size: 14px;
  line-height: 1;
  font-family: inherit;
  font-weight: 400;
  color: var(--text-sub);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
  text-decoration: none;
  position: relative;
  box-sizing: border-box;
  -webkit-appearance: none;
  appearance: none;
  white-space: nowrap;
  flex-shrink: 0;
}
.filter-sidebar .filter-options > .filter-option:hover,
.filter-sidebar .filter-options > .filter-option.active {
  background: var(--primary-bg);
  color: var(--primary);
}
.filter-sidebar .filter-options > .filter-option.active {
  font-weight: 600;
}
.filter-sidebar .filter-options > .filter-option.active::before {
  content: '';
  width: 4px;
  height: 16px;
  background: var(--primary);
  border-radius: 2px;
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
}
.filter-sidebar .filter-options > .filter-option .filter-count {
  margin-left: auto;
  font-size: 11px;
  line-height: 1;
  color: var(--text-light);
  background: var(--bg-gray);
  padding: 2px 6px;
  border-radius: 10px;
  flex-shrink: 0;
}
.products-main { min-width: 0; }
.products-result-info {
  font-size: 14px;
  color: var(--text-sub);
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.products-result-info strong { color: var(--primary); font-weight: 700; }

/* =============================================
   解决方案
   ============================================= */
.solutions-section { background: var(--white); }
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.solution-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
}
.solution-card-bg {
  position: absolute;
  inset: 0;
  transition: transform var(--transition);
  background-size: cover;
  background-position: center;
}
.solution-card:hover .solution-card-bg { transform: scale(1.06); }
.solution-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(13,71,161,0.85) 0%, rgba(25,118,210,0.35) 60%, rgba(0,0,0,0.1) 100%);
  transition: background var(--transition);
}
.solution-card:hover .solution-card-overlay {
  background: linear-gradient(to top, rgba(13,71,161,0.95) 0%, rgba(25,118,210,0.65) 60%, rgba(0,0,0,0.2) 100%);
}
.solution-card-content {
  position: relative;
  z-index: 2;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
  color: white;
}
.solution-icon {
  width: 48px; height: 48px;
  background: rgba(255,255,255,0.15);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 14px;
  backdrop-filter: blur(8px);
}
.solution-icon svg { width: 26px; height: 26px; fill: white; }
.solution-name { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.solution-desc { font-size: 13px; color: rgba(255,255,255,0.75); line-height: 1.6; }
.solution-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary-light);
  opacity: 0;
  transform: translateY(8px);
  transition: all var(--transition);
}
.solution-link svg { width: 14px; height: 14px; fill: var(--primary-light); }
.solution-card:hover .solution-link { opacity: 1; transform: translateY(0); }
/* 各行业背景图片 */
.sol-bg-gov   { background-image: url('../images/solutions/government.jpg'); }
.sol-bg-corp  { background-image: url('../images/solutions/enterprise.jpg'); }
.sol-bg-edu   { background-image: url('../images/solutions/education.jpg'); }
.sol-bg-med   { background-image: url('../images/solutions/medical.jpg'); }
.sol-bg-fin   { background-image: url('../images/solutions/finance.jpg'); }
.sol-bg-ene   { background-image: url('../images/solutions/energy.jpg'); }
.sol-bg-manu  { background-image: url('../images/solutions/manufacturing.jpg'); }
.sol-bg-ret   { background-image: url('../images/solutions/retail.jpg'); }
.sol-bg-prop  { background-image: url('../images/solutions/property.jpg'); }
.sol-bg-hosp  { background-image: url('../images/solutions/hospitality.jpg'); }
.sol-bg-tran  { background-image: url('../images/solutions/transportation.jpg'); }

/* =============================================
   为什么选择我们
   ============================================= */
.why-section { background: linear-gradient(180deg, var(--bg-gray) 0%, var(--white) 100%); }
.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.why-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px 24px;
  box-shadow: var(--shadow-sm);
  text-align: center;
  transition: all var(--transition);
  border-bottom: 3px solid transparent;
}
.why-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-6px);
  border-bottom-color: var(--primary);
}
.why-icon {
  width: 64px; height: 64px;
  background: var(--primary-bg);
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px;
}
.why-icon svg { width: 32px; height: 32px; fill: var(--primary); }
.why-title { font-size: 17px; font-weight: 700; margin-bottom: 10px; }
.why-desc { font-size: 14px; color: var(--text-sub); line-height: 1.7; }

/* =============================================
   合作品牌展示（2行5列 Logo Grid）
   ============================================= */
.brands-section { background: var(--primary-bg2); }
.brands-logo-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  margin-top: 48px;
}
.brand-logo-item {
  transition: all var(--transition);
}
.brand-logo-item:hover {
  transform: translateY(-6px);
}
.brand-logo-img {
  aspect-ratio: 1;
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.brand-logo-img::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='40' height='40'%3E%3Ccircle cx='20' cy='20' r='1' fill='rgba(255,255,255,0.08)'/%3E%3C/svg%3E");
  pointer-events: none;
}
.brand-logo-item:hover .brand-logo-img {
  box-shadow: var(--shadow-md);
}
.brand-logo-text {
  font-size: 18px;
  font-weight: 800;
  color: white;
  letter-spacing: 2px;
  position: relative;
  z-index: 1;
}
.brand-logo-sub {
  font-size: 11px;
  font-weight: 500;
  color: rgba(255,255,255,0.75);
  position: relative;
  z-index: 1;
}

/* =============================================
   我们的客户（滚动 Logo）
   ============================================= */
.clients-section {
  background: var(--white);
  padding-bottom: 80px;
}
.clients-scroll-area {
  overflow: hidden;
  margin-top: 48px;
}
.clients-track-wrap {
  overflow: hidden;
  padding: 16px 0;
}
.clients-track {
  display: flex;
  gap: 32px;
  align-items: center;
  width: max-content;
  animation: scrollClients 35s linear infinite;
}
.clients-track-wrap:hover .clients-track {
  animation-play-state: paused;
}
.clients-track-reverse {
  animation-direction: reverse;
  animation-duration: 40s;
}
@keyframes scrollClients {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
.client-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  min-width: 120px;
  padding: 16px 20px;
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
}
.client-item:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.client-logo-placeholder {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--primary-bg) 0%, var(--primary-bg2) 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
}
.client-logo-img {
  width: 140px;
  height: 56px;
  object-fit: contain;
  filter: grayscale(20%);
  transition: filter var(--transition);
}
.client-item:hover .client-logo-img {
  filter: grayscale(0%);
}
.client-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-sub);
  text-align: center;
  white-space: nowrap;
}

/* =============================================
   CTA 行动号召
   ============================================= */
.cta-section {
  background: linear-gradient(135deg, #0D47A1 0%, #1976D2 50%, #42A5F5 100%);
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='100' height='100'%3E%3Ccircle cx='50' cy='50' r='2' fill='rgba(255,255,255,0.04)'/%3E%3C/svg%3E");
}
.cta-section * { position: relative; z-index: 1; }
.cta-title { font-size: clamp(28px, 4vw, 42px); font-weight: 800; color: white; margin-bottom: 14px; }
.cta-desc { font-size: 17px; color: rgba(255,255,255,0.8); margin-bottom: 36px; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn-white {
  background: white;
  color: var(--primary-dark);
  padding: 14px 32px;
  border-radius: 40px;
  font-size: 16px;
  font-weight: 700;
  transition: all var(--transition);
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}
.btn-white:hover { box-shadow: 0 6px 28px rgba(0,0,0,0.2); transform: translateY(-2px); }
.btn-ghost {
  border: 2px solid rgba(255,255,255,0.5);
  color: white;
  padding: 14px 32px;
  border-radius: 40px;
  font-size: 16px;
  font-weight: 700;
  transition: all var(--transition);
}
.btn-ghost:hover { border-color: white; background: rgba(255,255,255,0.1); transform: translateY(-2px); }

/* =============================================
   页脚
   ============================================= */
.footer {
  background: #0A1929;
  color: rgba(255,255,255,0.7);
}
.footer-main {
  padding: 64px 0 40px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand .logo-text .name { color: white; }
.footer-brand .logo-text .sub { color: rgba(255,255,255,0.45); }
.footer-tagline {
  font-size: 14px;
  line-height: 1.8;
  margin-top: 14px;
  color: rgba(255,255,255,0.55);
}
.footer-contacts { margin-top: 24px; display: flex; flex-direction: column; gap: 10px; }
.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255,255,255,0.6);
}
.footer-contact-item svg { width: 16px; height: 16px; fill: var(--primary-light); flex-shrink: 0; }
.footer-col-title {
  font-size: 14px;
  font-weight: 700;
  color: white;
  margin-bottom: 18px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a {
  font-size: 14px;
  color: rgba(255,255,255,0.55);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--primary-light); }
.footer-bottom {
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
  flex-wrap: nowrap;
  gap: 12px;
}
.footer-bottom > span { white-space: nowrap; flex-shrink: 0; }
.footer-bottom > div {
  display: flex;
  flex-wrap: nowrap !important;
  white-space: nowrap;
  gap: 16px;
}
.footer-bottom a { color: rgba(255,255,255,0.4); transition: color var(--transition); white-space: nowrap; }
.footer-bottom a:hover { color: var(--primary-light); }

/* =============================================
   内页 Hero（副页面通用）
   ============================================= */
.page-hero {
  background: linear-gradient(135deg, #0A2540 0%, #0D47A1 60%, #1976D2 100%);
  background-size: cover;
  background-position: center;
  padding: 72px 0 60px;
  text-align: center;
  color: white;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='80' height='80'%3E%3Ccircle cx='40' cy='40' r='1.5' fill='rgba(255,255,255,0.04)'/%3E%3C/svg%3E");
}
/* 当有背景图片时，叠加半透明蓝色遮罩保证文字可读 */
.page-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,37,64,0.85) 0%, rgba(13,71,161,0.80) 60%, rgba(25,118,210,0.75) 100%);
  z-index: 0;
}
.page-hero * { position: relative; z-index: 1; }
.page-hero-title { font-size: clamp(28px, 5vw, 44px); font-weight: 800; margin-bottom: 14px; }
.page-hero-desc { font-size: 16px; color: rgba(255,255,255,0.75); max-width: 500px; margin: 0 auto 20px; }
.page-hero-minimal {
  padding: 72px 0 60px;
  background: linear-gradient(135deg, #0A2540 0%, #0D47A1 60%, #1976D2 100%);
}
.page-hero-minimal::after { display: none; }
.page-hero-minimal .breadcrumb { margin-bottom: 0; }
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  justify-content: center;
  font-size: 13px;
  color: rgba(255,255,255,0.6);
}
.breadcrumb a { color: rgba(255,255,255,0.6); transition: color var(--transition); }
.breadcrumb a:hover { color: white; }
.breadcrumb-sep { opacity: 0.4; }

/* =============================================
   面包屑导航条（解决方案页专用 - 方案A：白色紧凑型）
   ============================================= */
.page-breadcrumb-bar {
  background: white;
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}
.page-breadcrumb-bar .breadcrumb {
  color: var(--text-sub);
  font-size: 13px;
}
.page-breadcrumb-bar .breadcrumb a { color: var(--text-sub); }
.page-breadcrumb-bar .breadcrumb a:hover { color: var(--primary); }
.page-breadcrumb-bar .breadcrumb-sep { opacity: 0.4; }

/* =============================================
   滚动动画（Fade In Up）
   ============================================= */
.fade-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-up.delay-1 { transition-delay: 0.1s; }
.fade-up.delay-2 { transition-delay: 0.2s; }
.fade-up.delay-3 { transition-delay: 0.3s; }
.fade-up.delay-4 { transition-delay: 0.4s; }

/* =============================================
   响应式
   ============================================= */
@media (max-width: 1024px) {
  .hero-content { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { display: grid; grid-template-columns: repeat(3, 1fr); }
  .hero { min-height: auto; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-img-block { display: none; }
  .products-grid { grid-template-columns: repeat(3, 1fr); }
  .solutions-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .brands-logo-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-main { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .top-bar { display: none; }
  .nav-menu, .nav-phone { display: none; }
  .hamburger { display: flex; }
  .hero-content { padding: 56px 0 40px; }
  .hero-title { font-size: 30px; }
  .hero-actions { flex-direction: column; }
  .hero-stats { gap: 24px; }
  .hero-visual { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .solutions-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .brands-logo-grid { grid-template-columns: repeat(3, 1fr); gap: 12px; }
  .footer-main { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .about-stats { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero-stats { flex-wrap: wrap; gap: 16px; }
  .products-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .why-grid { grid-template-columns: 1fr; }
  .brands-logo-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .cta-actions { flex-direction: column; align-items: center; }
}

/* =============================================
   页面过渡动画入场
   ============================================= */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
.hero-text > * {
  animation: fadeInUp 0.7s ease both;
}
.hero-text > *:nth-child(1) { animation-delay: 0.05s; }
.hero-text > *:nth-child(2) { animation-delay: 0.15s; }
.hero-text > *:nth-child(3) { animation-delay: 0.25s; }
.hero-text > *:nth-child(4) { animation-delay: 0.35s; }
.hero-text > *:nth-child(5) { animation-delay: 0.45s; }

/* =============================================
   右侧悬浮栏
   ============================================= */
.side-float-bar {
  position: fixed;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 900;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.side-float-item {
  position: relative;
}
/* 按钮基础 — 圆润胶囊形，渐变质感 */
.side-float-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-direction: column;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(145deg, #ffffff, #f0f4f8);
  border: none;
  box-shadow:
    4px 4px 12px rgba(0,0,0,0.08),
    -2px -2px 8px rgba(255,255,255,0.9),
    inset 0 1px 1px rgba(255,255,255,0.8);
  font-size: 11px;
  font-weight: 600;
  color: var(--primary-dark);
  cursor: pointer;
  transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  text-decoration: none;
  line-height: 1.2;
  position: relative;
  overflow: hidden;
}
.side-float-btn .sf-icon {
  font-size: 20px;
  line-height: 1;
  margin-bottom: 2px;
  filter: grayscale(0);
  transition: transform 0.3s ease;
}
.side-float-btn:hover {
  background: linear-gradient(145deg, var(--primary), var(--primary-dark));
  color: #fff;
  transform: translateY(-4px) scale(1.06);
  box-shadow:
    6px 10px 24px rgba(25,118,210,0.35),
    -2px -2px 8px rgba(255,255,255,0.3);
}
.side-float-btn:hover .sf-icon {
  transform: scale(1.15) rotate(-5deg);
}

/* 微信二维码弹窗 — 精致卡片风格 */
.side-float-wechat-popup {
  position: absolute;
  right: 72px;
  top: 50%;
  transform: translateY(-50%) translateX(8px);
  background: var(--white);
  border-radius: 16px;
  box-shadow:
    0 12px 40px rgba(0,0,0,0.12),
    0 4px 12px rgba(0,0,0,0.06);
  padding: 20px 18px 16px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.32s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  pointer-events: none;
  border: 1px solid rgba(0,0,0,0.04);
  text-align: center;
  min-width: 170px;
}
.side-float-wechat-popup p {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-main);
  text-align: center;
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}
.side-float-wechat-popup img {
  width: 148px !important;
  height: 148px !important;
  max-width: 148px !important;
  max-height: 148px !important;
  object-fit: contain;
  display: block;
  border-radius: 10px;
  border: 1px solid rgba(0,0,0,0.05);
  background: #fff;
}
/* 弹窗顶部品牌色装饰线 */
.side-float-wechat-popup::before {
  content: '';
  position: absolute;
  top: 0;
  left: 20px;
  right: 20px;
  height: 3px;
  border-radius: 0 0 3px 3px;
  background: linear-gradient(90deg, #07C160, #1AAD19);
}
/* 小三角箭头 */
.side-float-wechat-popup::after {
  content: '';
  position: absolute;
  right: -6px;
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
  width: 12px;
  height: 12px;
  background: var(--white);
  border-top: 1px solid rgba(0,0,0,0.04);
  border-right: 1px solid rgba(0,0,0,0.04);
  box-shadow: 3px -3px 6px rgba(0,0,0,0.03);
}
.side-float-item:hover .side-float-wechat-popup {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(-50%) translateX(0);
}

@media(max-width: 768px) {
  .side-float-bar { display: none; }
}