/* ========================================
   小扁担企业官网 - 公共样式
   ======================================== */

/* 字体引入 */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* CSS 变量 */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #eff6ff;
  --accent: #f97316;
  --accent-dark: #ea6c0a;
  --text-dark: #0f172a;
  --text-gray: #64748b;
  --text-light: #94a3b8;
  --bg-white: #ffffff;
  --bg-light: #f8fafc;
  --bg-gray: #f1f5f9;
  --border: #e2e8f0;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --transition: 0.25s ease;
  --navbar-height: 70px;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text-dark);
  background: var(--bg-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ========== 容器 ========== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-sm { padding: 60px 0; }

/* ========== 排版 ========== */
.section-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-light);
  padding: 4px 14px;
  border-radius: 100px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  color: var(--text-dark);
  line-height: 1.2;
  margin-bottom: 16px;
}
.section-desc {
  font-size: 17px;
  color: var(--text-gray);
  max-width: 600px;
  line-height: 1.75;
}
.text-center { text-align: center; }
.text-center .section-desc { margin: 0 auto; }

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(37,99,235,0.35); }
.btn-accent {
  background: var(--accent);
  color: #fff;
}
.btn-accent:hover { background: var(--accent-dark); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(249,115,22,0.35); }
.btn-outline {
  border: 2px solid var(--primary);
  color: var(--primary);
}
.btn-outline:hover { background: var(--primary); color: #fff; }
.btn-ghost {
  color: var(--text-gray);
  border: 1.5px solid var(--border);
}
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }
.btn-sm { padding: 8px 18px; font-size: 13px; border-radius: 6px; }
.btn-lg { padding: 16px 36px; font-size: 16px; border-radius: 10px; }
.btn-block { width: 100%; justify-content: center; }

/* 下载按钮组 */
.download-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}
.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 18px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  transition: all var(--transition);
  border: 1.5px solid transparent;
}
.btn-android {
  background: #e8f5e9;
  color: #2e7d32;
  border-color: #a5d6a7;
}
.btn-android:hover { background: #2e7d32; color: #fff; }
.btn-ios {
  background: #f3f0ff;
  color: #5b21b6;
  border-color: #c4b5fd;
}
.btn-ios:hover { background: #5b21b6; color: #fff; }
.btn-web {
  background: #eff6ff;
  color: #1d4ed8;
  border-color: #93c5fd;
}
.btn-web:hover { background: #1d4ed8; color: #fff; }

/* ========== 导航栏 ========== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--navbar-height);
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  transition: box-shadow var(--transition);
}
.navbar.scrolled { box-shadow: var(--shadow-md); }
.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--navbar-height);
}
.navbar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
}
.navbar-logo .logo-icon {
  width: 38px; height: 38px;
  background: var(--primary);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-size: 18px;
  font-weight: 900;
}
.navbar-logo .logo-sub {
  font-size: 11px;
  font-weight: 400;
  color: var(--text-gray);
  display: block;
  line-height: 1;
  margin-top: 2px;
}
.navbar-logo .logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-links a {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-gray);
  transition: all var(--transition);
}
.nav-links a:hover, .nav-links a.active {
  color: var(--primary);
  background: var(--primary-light);
}
.nav-cta { margin-left: 8px; }
.navbar-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px; cursor: pointer;
}
.navbar-toggle span {
  display: block;
  height: 2.5px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: all var(--transition);
}
.nav-mobile {
  display: none;
  position: fixed;
  top: var(--navbar-height); left: 0; right: 0;
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 16px 24px;
  flex-direction: column;
  gap: 4px;
  z-index: 999;
  box-shadow: var(--shadow-md);
}
.nav-mobile.open { display: flex; }
.nav-mobile a {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  color: var(--text-gray);
  transition: all var(--transition);
}
.nav-mobile a:hover, .nav-mobile a.active { background: var(--primary-light); color: var(--primary); }

/* ========== 页脚 ========== */
.footer {
  background: var(--text-dark);
  color: #cbd5e1;
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand .logo-wrap {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 16px;
}
.footer-brand .logo-icon {
  width: 40px; height: 40px;
  background: var(--primary);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-size: 18px;
  font-weight: 900;
}
.footer-brand .brand-name { font-size: 18px; font-weight: 800; color: #fff; }
.footer-brand p { font-size: 14px; line-height: 1.75; color: #94a3b8; max-width: 260px; }
.footer-col h4 { font-size: 14px; font-weight: 700; color: #fff; margin-bottom: 16px; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul a { font-size: 14px; color: #94a3b8; transition: color var(--transition); }
.footer-col ul a:hover { color: #fff; }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  font-size: 13px;
  color: #64748b;
}
.footer-bottom a { color: #64748b; transition: color var(--transition); }
.footer-bottom a:hover { color: #94a3b8; }

/* ========== Hero区 ========== */
.hero {
  padding-top: calc(var(--navbar-height) + 80px);
  padding-bottom: 80px;
  background: linear-gradient(135deg, #eff6ff 0%, #f0fdf4 50%, #fff7ed 100%);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -200px; right: -200px;
  width: 700px; height: 700px;
  background: radial-gradient(circle, rgba(37,99,235,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -100px; left: -100px;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(249,115,22,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(37,99,235,0.1);
  color: var(--primary);
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
  border: 1px solid rgba(37,99,235,0.2);
}
.hero-title {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 20px;
  color: var(--text-dark);
}
.hero-title .highlight {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 18px;
  color: var(--text-gray);
  line-height: 1.75;
  margin-bottom: 36px;
  max-width: 500px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 48px; }
.hero-stats {
  display: flex;
  gap: 32px;
}
.hero-stat-item { }
.hero-stat-num {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}
.hero-stat-label { font-size: 13px; color: var(--text-gray); margin-top: 4px; }
.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.hero-card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  width: 100%;
  max-width: 440px;
}
.hero-product-card {
  background: #fff;
  border-radius: 16px;
  padding: 20px;
  box-shadow: var(--shadow-md);
  border: 19px solid var(--border);
  transition: transform var(--transition);
}
.hero-product-card:hover { transform: translateY(-4px); }
.hero-product-card:nth-child(1) { margin-top: 24px; }
.hero-product-card:nth-child(3) { margin-top: -24px; }
.product-icon-wrap {
  width: 44px; height: 44px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 12px;
  font-size: 22px;
}
.hero-product-card h4 { font-size: 13px; font-weight: 700; margin-bottom: 6px; }
.hero-product-card p { font-size: 12px; color: var(--text-gray); line-height: 1.5; }

/* ========== 统计条 ========== */
.stats-bar {
  background: var(--primary);
  padding: 40px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  text-align: center;
}
.stat-item {}
.stat-num {
  font-size: 36px;
  font-weight: 900;
  color: #fff;
  line-height: 1;
}
.stat-unit { font-size: 18px; }
.stat-label {
  font-size: 14px;
  color: rgba(255,255,255,0.75);
  margin-top: 6px;
}

/* ========== 特色区 ========== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 48px;
}
.feature-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  padding: 32px 28px;
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.feature-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); border-color: var(--primary); }
.feature-icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  background: var(--primary-light);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
}
.feature-icon svg { width: 26px; height: 26px; color: var(--primary); }
.feature-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--text-gray); line-height: 1.7; }

/* ========== 产品卡片 ========== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 48px;
}
.product-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}
.product-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-6px); }
.product-card-header {
  padding: 28px 28px 20px;
  border-bottom: 1px solid var(--bg-gray);
}
.product-icon-lg {
  width: 60px; height: 60px;
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  font-size: 28px;
  margin-bottom: 16px;
}
.product-card h3 { font-size: 18px; font-weight: 800; margin-bottom: 8px; }
.product-card .product-type {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 100px;
  background: var(--primary-light);
  color: var(--primary);
}
.product-card-body { padding: 20px 28px; flex: 1; }
.product-card p { font-size: 14px; color: var(--text-gray); line-height: 1.75; margin-bottom: 16px; }
.product-features { display: flex; flex-direction: column; gap: 8px; }
.product-feature-item {
  display: flex; align-items: flex-start; gap: 8px;
  font-size: 13px; color: var(--text-gray);
}
.product-feature-item::before {
  content: '✓';
  color: var(--primary);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}
.product-card-footer { padding: 20px 28px 24px; background: var(--bg-light); border-top: 1px solid var(--border); }
.platform-label { font-size: 12px; font-weight: 600; color: var(--text-light); margin-bottom: 10px; letter-spacing: 0.05em; text-transform: uppercase; }

/* ========== 产品详情页（产品服务页）========== */
.product-detail-card {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
  margin-bottom: 32px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}
.product-detail-card:hover { box-shadow: var(--shadow-md); }
.pdc-header {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 28px 36px;
  background: linear-gradient(135deg, var(--primary-light), #fff);
  border-bottom: 1px solid var(--border);
}
.pdc-icon {
  width: 64px; height: 64px;
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  font-size: 30px;
  flex-shrink: 0;
}
.pdc-header-info h2 { font-size: 22px; font-weight: 800; margin-bottom: 4px; }
.pdc-header-info p { font-size: 14px; color: var(--text-gray); }
.pdc-badge {
  margin-left: auto;
  background: var(--primary);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 100px;
}
.pdc-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}
.pdc-desc { padding: 28px 36px; }
.pdc-desc p { font-size: 15px; color: var(--text-gray); line-height: 1.8; margin-bottom: 20px; }
.pdc-feature-list { display: flex; flex-direction: column; gap: 10px; }
.pdc-feature-item {
  display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: var(--text-gray);
}
.pdc-feature-item .check-icon {
  width: 20px; height: 20px;
  background: var(--primary-light);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  color: var(--primary);
  font-size: 11px;
  font-weight: 700;
}
.pdc-download {
  padding: 28px 36px;
  border-left: 1px solid var(--bg-gray);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.pdc-download h4 { font-size: 14px; font-weight: 700; color: var(--text-dark); margin-bottom: 14px; }
.pdc-download .download-btns { flex-direction: column; gap: 10px; }
.pdc-download .btn-download { justify-content: flex-start; padding: 12px 20px; font-size: 14px; }

/* ========== 关于我们 ========== */
.about-hero {
  padding-top: calc(var(--navbar-height) + 60px);
  padding-bottom: 60px;
  background: linear-gradient(135deg, #eff6ff 0%, #f8fafc 100%);
}
.about-hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.about-visual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.about-vis-card {
  background: #fff;
  border-radius: 16px;
  padding: 24px;
  text-align: center;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
}
.about-vis-card:nth-child(2) { margin-top: 24px; }
.about-vis-card .num { font-size: 32px; font-weight: 900; color: var(--primary); }
.about-vis-card .lbl { font-size: 13px; color: var(--text-gray); margin-top: 4px; }
.mission-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 48px;
}
.mission-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 32px 24px;
  border: 1px solid var(--border);
  text-align: center;
  transition: all var(--transition);
}
.mission-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.mission-card .icon { font-size: 36px; margin-bottom: 16px; }
.mission-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 12px; }
.mission-card p { font-size: 14px; color: var(--text-gray); line-height: 1.75; }
.timeline { position: relative; padding-left: 32px; margin-top: 48px; }
.timeline::before {
  content: '';
  position: absolute;
  left: 10px; top: 0; bottom: 0;
  width: 2px;
  background: var(--border);
}
.timeline-item { position: relative; margin-bottom: 40px; }
.timeline-dot {
  position: absolute;
  left: -28px; top: 4px;
  width: 18px; height: 18px;
  background: var(--primary);
  border-radius: 50%;
  border: 3px solid #fff;
  box-shadow: 0 0 0 2px var(--primary);
}
.timeline-year {
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 6px;
}
.timeline-item h4 { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.timeline-item p { font-size: 14px; color: var(--text-gray); line-height: 1.7; }
.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.team-card {
  text-align: center;
  background: #fff;
  border-radius: var(--radius);
  padding: 28px 20px;
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.team-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.team-avatar {
  width: 72px; height: 72px;
  border-radius: 50%;
  margin: 0 auto 16px;
  display: flex; align-items: center; justify-content: center;
  font-size: 28px;
  font-weight: 800;
  color: #fff;
}
.team-card h4 { font-size: 15px; font-weight: 700; margin-bottom: 4px; }
.team-card .role { font-size: 13px; color: var(--primary); font-weight: 600; margin-bottom: 8px; }
.team-card p { font-size: 12px; color: var(--text-gray); line-height: 1.6; }

/* ========== 联系我们 ========== */
.contact-hero {
  padding-top: calc(var(--navbar-height) + 60px);
  padding-bottom: 60px;
  background: linear-gradient(135deg, #eff6ff 0%, #f8fafc 100%);
  text-align: center;
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 48px;
  margin-top: 48px;
}
.contact-info-list { display: flex; flex-direction: column; gap: 20px; }
.contact-info-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border);
  display: flex;
  gap: 16px;
  transition: all var(--transition);
}
.contact-info-card:hover { box-shadow: var(--shadow-md); border-color: var(--primary); }
.contact-info-icon {
  width: 48px; height: 48px;
  background: var(--primary-light);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  font-size: 22px;
}
.contact-info-text h4 { font-size: 14px; font-weight: 700; margin-bottom: 4px; }
.contact-info-text p { font-size: 14px; color: var(--text-gray); line-height: 1.6; }
.contact-form-wrap {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.contact-form-wrap h3 { font-size: 22px; font-weight: 800; margin-bottom: 8px; }
.contact-form-wrap > p { font-size: 14px; color: var(--text-gray); margin-bottom: 28px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; color: var(--text-dark); margin-bottom: 7px; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: inherit;
  color: var(--text-dark);
  background: var(--bg-light);
  transition: border-color var(--transition);
  outline: none;
  resize: vertical;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  border-color: var(--primary);
  background: #fff;
}
.form-group textarea { min-height: 120px; }
.faq-list { display: flex; flex-direction: column; gap: 12px; margin-top: 48px; }
.faq-item {
  background: #fff;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border);
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item.open { border-color: var(--primary); }
.faq-q {
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-dark);
  user-select: none;
}
.faq-q .arrow { transition: transform var(--transition); font-size: 18px; color: var(--text-gray); }
.faq-item.open .faq-q .arrow { transform: rotate(180deg); }
.faq-a {
  display: none;
  padding: 0 24px 18px;
  font-size: 14px;
  color: var(--text-gray);
  line-height: 1.75;
}
.faq-item.open .faq-a { display: block; }

/* ========== 页面 Banner ========== */
.page-banner {
  padding-top: calc(var(--navbar-height) + 60px);
  padding-bottom: 60px;
  background: linear-gradient(135deg, #eff6ff 0%, #f8fafc 100%);
  text-align: center;
}
.page-banner .section-title { font-size: clamp(32px, 4vw, 48px); }
.breadcrumb {
  display: flex; align-items: center; justify-content: center;
  gap: 8px; font-size: 14px; color: var(--text-gray); margin-top: 12px;
}
.breadcrumb a { color: var(--primary); }
.breadcrumb span { color: #0f172a; }

/* ========== CTA Banner ========== */
.cta-section {
  background: linear-gradient(135deg, var(--primary), #1e40af);
  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 width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.cta-section h2 { font-size: clamp(28px, 4vw, 40px); font-weight: 800; color: #fff; margin-bottom: 16px; position: relative; }
.cta-section p { font-size: 18px; color: rgba(255,255,255,0.8); margin-bottom: 36px; position: relative; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; position: relative; }
.btn-white { background: #fff; color: var(--primary); }
.btn-white:hover { background: #f0f7ff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.2); }
.btn-outline-white { border: 2px solid rgba(255,255,255,0.6); color: #fff; }
.btn-outline-white:hover { background: rgba(255,255,255,0.1); }

/* ========== 评价区 ========== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.testimonial-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}
.testimonial-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.testimonial-stars { color: #f59e0b; font-size: 16px; margin-bottom: 14px; letter-spacing: 2px; }
.testimonial-text { font-size: 14px; color: var(--text-gray); line-height: 1.8; margin-bottom: 20px; font-style: italic; }
.testimonial-author { display: flex; align-items: center; gap: 12px; }
.testimonial-avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 14px;
}
.testimonial-name { font-size: 14px; font-weight: 700; }
.testimonial-role { font-size: 12px; color: var(--text-gray); }

/* ========== 分类筛选 ========== */
.filter-bar {
  display: flex; gap: 10px; flex-wrap: wrap;
  margin-bottom: 36px;
}
.filter-btn {
  padding: 9px 22px;
  border-radius: 100px;
  font-size: 14px;
  font-weight: 600;
  border: 1.5px solid var(--border);
  color: var(--text-gray);
  cursor: pointer;
  transition: all var(--transition);
  background: #fff;
}
.filter-btn:hover, .filter-btn.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .features-grid, .products-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .hero-inner, .about-hero-inner { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .hero-stats { gap: 20px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .features-grid, .products-grid, .mission-grid, .testimonials-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .contact-grid { grid-template-columns: 1fr; }
  .pdc-body { grid-template-columns: 1fr; }
  .pdc-download { border-left: none; border-top: 1px solid var(--bg-gray); }
  .pdc-download .download-btns { flex-direction: row; flex-wrap: wrap; }
  .form-row { grid-template-columns: 1fr; }
  .nav-links, .nav-cta { display: none; }
  .navbar-toggle { display: flex; }
  .hero-title { font-size: 36px; }
  .about-visual { display: none; }
}
@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .hero-stats { flex-wrap: wrap; }
  .contact-form-wrap { padding: 24px; }
  .pdc-header { flex-direction: column; align-items: flex-start; }
  .pdc-badge { margin-left: 0; margin-top: 8px; }
}