/* ============================================
   WeLinkX — 基于 ltmate.cn 风格
   ============================================ */

/* ---------- CSS 变量 ---------- */
:root {
  --primary-blue: #1a3a5c;
  --primary-dark: #0d2137;
  --accent-orange: #e8590c;
  --accent-orange-hover: #d9480b;
  --text-dark: #1a1a1a;
  --text-gray: #888;
  --text-light: #aaa;
  --bg-light: #f7f9fc;
  --bg-section-alt: #f0f4f8;
  --border-color: #e8e8e8;
  --gradient-hero: linear-gradient(135deg, #0d2137 0%, #1a3a5c 50%, #2a5f8f 100%);
  --shadow-sm: 0 2px 12px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 40px rgba(0,0,0,0.12);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.08);
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --transition: all 0.3s ease;
}

/* ---------- 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text-dark);
  background: #fff;
  line-height: 1.6;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
button, input, select, textarea { font-family: inherit; }

/* ---------- 容器 ---------- */
.container-lt {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- Page View ---------- */
.page-view { display: none; }
.section-padding { padding: 80px 0; }

.page-view.active {
  display: block;
  padding-top: 72px; /* 抵消固定导航栏 */
}

/* ============================================
   头部导航
   ============================================ */
.main-header {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  z-index: 1000;
  background: #fff;
  box-shadow: 0 1px 8px rgba(0,0,0,0.06);
  transition: box-shadow 0.3s ease;
}
.main-header.scrolled {
  box-shadow: 0 2px 20px rgba(0,0,0,0.10);
}

/* 导航内栏 */
.navbar-inner {
  display: flex;
  align-items: center;
  height: 72px;
  width: 100%;
  position: relative;
}
.logo { position: relative; z-index: 2; }
.nav-right { position: relative; z-index: 2; margin-left: auto; display: flex; align-items: center; gap: 16px; }

/* Logo 文字 */
.logo-text {
  font-size: 22px;
  font-weight: 800;
  color: var(--primary-blue);
  letter-spacing: 1px;
}
.logo-text span { color: var(--accent-orange); }

/* 主导航菜单 — 真正居中 */
.main-nav {
  position: absolute;
  left: 50%;
  top: 0;
  height: 100%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 28px;
}

/* 导航项 */
.nav-item {
  position: relative;
  padding: 0 18px;
  height: 72px;
  display: flex;
  align-items: center;
  cursor: pointer;
}
.nav-item > a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-dark);
  padding: 26px 0;
  position: relative;
  transition: box-shadow 0.3s ease;
}
.nav-item > a::after {
  content: '';
  position: absolute;
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--accent-orange);
  transition: width 0.3s ease;
}
.nav-item:hover > a,
.nav-item.active > a { color: var(--accent-orange); }
.nav-item:hover > a::after,
.nav-item.active > a::after { width: 70%; }

/* 下拉菜单 */
.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background: #fff;
  box-shadow: var(--shadow-md);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all 0.25s ease;
  padding: 8px 0;
}
.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav-dropdown li a {
  display: block;
  padding: 10px 24px;
  font-size: 14px;
  color: var(--text-gray);
  transition: box-shadow 0.3s ease;
}
.nav-dropdown li a:hover {
  background: var(--bg-light);
  color: var(--accent-orange);
}

/* 服务热线（PC端始终显示） */
.nav-hotline {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: 28px;
  padding-left: 28px;
  border-left: 1px solid rgba(26,58,92,0.12);
  white-space: nowrap;
  flex-shrink: 0;
}
.nav-hotline i { font-size: 18px; color: var(--accent-orange); }
.nav-hotline > div { display: flex; align-items: center; gap: 8px; }
.nav-hotline .hotline-label { font-size: 13px; color: var(--text-gray); line-height: 1.3; }
.nav-hotline .hotline-number { font-size: 15px; font-weight: 700; color: var(--primary-blue); letter-spacing: 0.5px; }
.nav-hotline a.hotline-number { color: var(--primary-blue); text-decoration: none; }
.nav-hotline a.hotline-number:hover { color: var(--accent-orange); }

/* scrolled 状态 */
.main-header.scrolled .nav-hotline { border-left-color: rgba(26,58,92,0.12); }
.main-header.scrolled .nav-hotline i { color: var(--accent-orange); }
.main-header.scrolled .logo-text { color: var(--primary-blue); }
.main-header.scrolled .nav-item > a { color: var(--text-dark); }

/* 汉堡菜单按钮（PC端隐藏） */
.mobile-toggle { display: none; }

/* header 占位 */
.header-spacer { display: block; height: 72px; }

/* ============================================
   Hero Section
   ============================================ */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--gradient-hero);
  overflow: hidden;
  padding: 120px 0 80px;
}
.hero-bg-pattern {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(232,89,12,0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(74,144,217,0.10) 0%, transparent 50%);
  pointer-events: none;
}
.hero-grid-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}
.hero-content.container-lt {
  position: relative;
  z-index: 2;
  max-width: 680px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 20px;
  padding: 6px 16px;
  font-size: 12px;
  letter-spacing: 2px;
  color: rgba(255,255,255,0.7);
  margin-bottom: 24px;
  text-transform: uppercase;
}
.hero-badge i { color: var(--accent-orange); font-size: 13px; }
.hero-title {
  font-size: 52px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 16px;
}
.hero-title .highlight { color: var(--accent-orange); }
.hero-subtitle {
  font-size: 16px;
  letter-spacing: 3px;
  color: rgba(255,255,255,0.5);
  margin-bottom: 20px;
  text-transform: uppercase;
}
.hero-desc {
  font-size: 16px;
  color: rgba(255,255,255,0.7);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 540px;
}
.hero-btns {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.btn-primary-lt {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: var(--accent-orange);
  color: #fff;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: box-shadow 0.3s ease;
  border: none;
  cursor: pointer;
}
.btn-primary-lt:hover {
  background: var(--accent-orange-hover);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(232,89,12,0.30);
}
.btn-outline-light-lt {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.30);
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  transition: box-shadow 0.3s ease;
  cursor: pointer;
}
.btn-outline-light-lt:hover {
  background: rgba(255,255,255,0.10);
  border-color: rgba(255,255,255,0.60);
}

/* Hero 右侧装饰球 */
.hero-right {
  position: absolute;
  right: 60px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 1;
}
.hero-globe {
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 35% 35%, rgba(74,144,217,0.25) 0%, transparent 60%),
    radial-gradient(circle at 65% 65%, rgba(232,89,12,0.15) 0%, transparent 60%),
    linear-gradient(135deg, rgba(26,58,92,0.40), rgba(42,95,143,0.20));
  border: 1px solid rgba(255,255,255,0.08);
  position: relative;
  animation: floatGlobe 8s ease-in-out infinite;
}
.hero-globe::before {
  content: '';
  position: absolute;
  inset: -20px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.04);
}
.hero-globe::after {
  content: '';
  position: absolute;
  width: 120%;
  height: 120%;
  top: -10%;
  left: -10%;
  border-radius: 50%;
  border: 1px solid rgba(74,144,217,0.10);
  animation: spinSlow 30s linear infinite;
}
@keyframes floatGlobe {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-20px); }
}
@keyframes spinSlow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ============================================
   Services Section
   ============================================ */
.services-section { padding: 80px 0; background: #fff; }
.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-tag {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 3px;
  color: var(--accent-orange);
  font-weight: 600;
  margin-bottom: 12px;
  text-transform: uppercase;
}
.section-title {
  font-size: 36px;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 12px;
}
.section-subtitle {
  font-size: 16px;
  color: var(--text-gray);
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.service-card {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  transition: box-shadow 0.3s ease;
  cursor: pointer;
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.service-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, rgba(26,58,92,0.06), rgba(74,144,217,0.08));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  color: var(--primary-blue);
  transition: box-shadow 0.3s ease;
}
.service-card:hover .service-icon {
  background: var(--accent-orange);
  color: #fff;
}
.service-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 10px;
}
.service-card p {
  font-size: 14px;
  color: var(--text-gray);
  line-height: 1.7;
}

/* ============================================
   Why Section
   ============================================ */
.why-section { padding: 80px 0; background: #fff; }

/* ============================================
   Why Section (旧版)
   ============================================ */
.why-section { padding: 80px 0; background: #fff; }
.why-section .section-header {
  text-align: center;
  margin-bottom: 56px;
}
.why-section .section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--primary-blue);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.why-section .section-title {
  font-size: 36px;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 16px;
}
.why-section .section-subtitle {
  font-size: 16px;
  color: var(--text-gray);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-bottom: 0;
}
.stat-card {
  background: var(--bg-light);
  border-radius: var(--radius-lg);
  padding: 40px 24px;
  text-align: center;
  transition: all 0.3s ease;
  border: 1px solid var(--border-color);
}
.stat-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-blue);
}
.stat-number {
  font-size: 48px;
  font-weight: 800;
  color: var(--primary-blue);
  line-height: 1.1;
  margin-bottom: 12px;
}
.stat-number .unit {
  font-size: 18px;
  font-weight: 700;
  color: var(--accent-orange);
}
.stat-label {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 12px;
}
.stat-desc {
  font-size: 14px;
  color: var(--text-gray);
  line-height: 1.7;
}


/* ============================================
   Stats Bar
   ============================================ */
.stats-bar {
  background: var(--gradient-hero);
  padding: 48px 0;
  color: #fff;
}
.stats-bar-inner {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
  text-align: center;
}
.stat-bar-item .num {
  font-size: 40px;
  font-weight: 800;
  color: #fff;
  line-height: 1;
}
.stat-bar-item .label {
  font-size: 14px;
  color: rgba(255,255,255,0.60);
  margin-top: 8px;
}

/* ============================================
   Cases Section
   ============================================ */
.cases-section { padding: 80px 0; background: #fff; }
.cases-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.case-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: box-shadow 0.3s ease;
  cursor: pointer;
}
.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.case-img-wrap {
  height: 180px;
  background: linear-gradient(135deg, rgba(26,58,92,0.06), rgba(74,144,217,0.08));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  color: var(--primary-blue);
}
.case-cat-icon {
  width: 72px;
  height: 72px;
  background: rgba(255,255,255,0.80);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
}
.case-info { padding: 20px; }
.case-cat-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 6px;
}
.case-data {
  font-size: 13px;
  color: var(--text-gray);
  line-height: 1.6;
}
.case-data strong { color: var(--accent-orange); font-weight: 700; }

/* ============================================
   About Video + About Us Section
   ============================================ */
.about-section { padding: 80px 0; background: var(--bg-section-alt); }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.video-wrapper {
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 320px;
}
.about-content h2 {
  font-size: 32px;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 8px;
}
.en-text {
  font-size: 13px;
  letter-spacing: 3px;
  color: var(--accent-orange);
  font-weight: 600;
  margin-bottom: 16px;
  text-transform: uppercase;
}
.about-content p {
  font-size: 15px;
  color: var(--text-gray);
  line-height: 1.8;
  margin-bottom: 24px;
}
.cert-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 28px;
}
.cert-item {
  display: flex;
  align-items: center;
  gap: 12px;
}
.cert-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary-blue), #2a5f8f);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 14px;
  flex-shrink: 0;
}
.cert-text {
  font-size: 14px;
  color: var(--text-dark);
  font-weight: 500;
}

/* ============================================
   Report Section
   ============================================ */
.report-section { padding: 80px 0; background: #fff; }
.report-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}
.report-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: var(--bg-light);
  border-radius: var(--radius-md);
  transition: box-shadow 0.3s ease;
}
.report-item:hover {
  background: rgba(232,89,12,0.06);
  transform: translateX(4px);
}
.report-num {
  width: 36px;
  height: 36px;
  background: var(--primary-blue);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  flex-shrink: 0;
}
.report-text {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-dark);
}

/* Contact CTA */
.contact-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--gradient-hero);
  border-radius: var(--radius-lg);
  padding: 40px 48px;
  color: #fff;
}
.contact-cta h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 6px;
}
.contact-cta p {
  font-size: 14px;
  color: rgba(255,255,255,0.70);
}
.contact-cta-info {
  display: flex;
  gap: 40px;
}
.contact-item { text-align: right; }
.contact-item .label {
  font-size: 13px;
  color: rgba(255,255,255,0.60);
  margin-bottom: 4px;
}
.contact-item .value {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
}

/* ============================================
   Insight Section
   ============================================ */
.insight-section { padding: 70px 0 80px; background: var(--bg-light); }
.insight-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.insight-tab {
  padding: 10px 24px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-gray);
  cursor: pointer;
  transition: box-shadow 0.3s ease;
  border: 1px solid var(--border-color);
  background: #fff;
}
.insight-tab:hover { color: var(--primary-blue); }
.insight-tab.active {
  background: var(--primary-blue);
  color: #fff;
  border-color: var(--primary-blue);
}
.insight-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.insight-card {
  display: flex;
  gap: 24px;
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: box-shadow 0.3s ease;
}
.insight-card:hover {
  border-color: var(--accent-orange);
  box-shadow: var(--shadow-sm);
}
.insight-thumb {
  width: 240px;
  min-height: 160px;
  flex-shrink: 0;
}
.insight-info {
  flex: 1;
  padding: 20px 20px 20px 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.insight-meta {
  display: flex;
  gap: 12px;
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 8px;
}
.insight-cat {
  color: var(--accent-orange);
  font-weight: 600;
}
.insight-info h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 8px;
  line-height: 1.4;
}
.insight-info h3 a:hover { color: var(--accent-orange); }
.insight-info p {
  font-size: 14px;
  color: var(--text-gray);
  line-height: 1.7;
}

/* ============================================
   Footer
   ============================================ */
.footer { background: var(--primary-dark); color: #fff; }
.footer-main { padding: 60px 0 40px; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr;
  gap: 40px;
}
.footer-brand .logo-text-footer {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 1px;
  display: inline-block;
  margin-bottom: 14px;
}
.footer-brand .logo-text-footer span { color: var(--accent-orange); }
.footer-brand p {
  font-size: 14px;
  color: rgba(255,255,255,0.60);
  line-height: 1.7;
  margin-bottom: 18px;
}
.footer-social {
  display: flex;
  gap: 12px;
}
.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.10);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.70);
  font-size: 16px;
  transition: box-shadow 0.3s ease;
}
.footer-social a:hover { background: var(--accent-orange); color: #fff; }
.footer-col h4 {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 12px;
}
.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--accent-orange);
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a {
  font-size: 14px;
  color: rgba(255,255,255,0.60);
  transition: box-shadow 0.3s ease;
}
.footer-col ul li a:hover { color: var(--accent-orange); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 18px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.40);
}
.footer-bottom a { color: rgba(255,255,255,0.50); }
.footer-bottom a:hover { color: var(--accent-orange); }

/* ============================================
   Page Banner (子页面)
   ============================================ */
.page-banner {
  background: var(--gradient-hero);
  padding: 80px 0 60px;
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(74,144,217,0.15), transparent 70%);
}
.page-banner h1 {
  font-size: 38px;
  font-weight: 800;
  margin-bottom: 12px;
  position: relative;
}
.breadcrumb-lt {
  font-size: 14px;
  color: rgba(255,255,255,0.60);
  position: relative;
}
.breadcrumb-lt a { color: rgba(255,255,255,0.70); }
.breadcrumb-lt a:hover { color: #fff; }
.breadcrumb-lt .sep { margin: 0 8px; }

/* ============================================
   About Hero (关于我们子页)
   ============================================ */
.about-hero {
  background: var(--gradient-hero);
  padding: 80px 0;
  color: #fff;
  text-align: center;
}
.about-hero h1 {
  font-size: 38px;
  font-weight: 800;
  margin-bottom: 12px;
}
.about-hero p {
  font-size: 16px;
  color: rgba(255,255,255,0.70);
  max-width: 640px;
  margin: 0 auto;
}

/* About Intro (公司介绍区块) */
.about-intro { padding: 80px 0; }
.about-intro .about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.about-image {
  border-radius: var(--radius-xl);
  overflow: hidden;
}
.about-image img { width: 100%; }

/* About Content (复用) */
.about-content h2 {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 8px;
}
.about-content .en-text {
  font-size: 13px;
  letter-spacing: 3px;
  color: var(--accent-orange);
  font-weight: 600;
  margin-bottom: 16px;
  text-transform: uppercase;
}

/* ============================================
   Article List (跨境洞察子页)
   ============================================ */
.article-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.article-item {
  display: flex;
  gap: 24px;
  padding: 24px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: box-shadow 0.3s ease;
}
.article-item:hover {
  border-color: var(--accent-orange);
  box-shadow: var(--shadow-sm);
}
.article-thumb {
  width: 240px;
  height: 160px;
  flex-shrink: 0;
  border-radius: var(--radius-md);
  background: var(--bg-light);
  overflow: hidden;
}
.article-thumb img { width: 100%; height: 100%; object-fit: cover; }
.article-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.article-info h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 10px;
  line-height: 1.4;
}
.article-info h3 a:hover { color: var(--accent-orange); }
.article-info .excerpt {
  font-size: 14px;
  color: var(--text-gray);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 12px;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: var(--text-light);
}

/* ============================================
   预约弹窗
   ============================================ */
.appoint-mask {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.50);
  z-index: 10000;
  align-items: center;
  justify-content: center;
}
.appoint-mask.show {
  display: flex;
}
.appoint-popup {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px;
  width: 460px;
  max-width: 90vw;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
}
.appoint-close {
  position: absolute;
  top: 16px;
  right: 16px;
  font-size: 18px;
  color: var(--text-gray);
  cursor: pointer;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: box-shadow 0.3s ease;
}
.appoint-close:hover { background: var(--bg-light); }
.appoint-popup h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 24px;
}
.appoint-form .form-group { margin-bottom: 18px; }
.appoint-form label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 6px;
}
.appoint-form input,
.appoint-form select,
.appoint-form textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 14px;
  transition: box-shadow 0.3s ease;
  font-family: inherit;
  box-sizing: border-box;
}
.appoint-form textarea {
  resize: vertical;
  min-height: 90px;
}
.appoint-form input:focus,
.appoint-form select:focus,
.appoint-form textarea:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(26,58,92,0.10);
}

/* 服务多选复选框 */
.service-checkbox-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 12px;
  padding: 10px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: #fafafa;
}
.service-cb-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-dark);
  cursor: pointer;
  padding: 2px 0;
}
.service-cb-item input[type="checkbox"] {
  width: 15px;
  height: 15px;
  min-width: 15px;
  padding: 0;
  border: 1.5px solid var(--border-color);
  border-radius: 3px;
  accent-color: var(--primary-blue);
  cursor: pointer;
}
.service-cb-item span { line-height: 1.4; }

/* ============================================
   右侧悬浮工具栏
   ============================================ */
.side-toolbar {
  position: fixed;
  right: 18px;
  bottom: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.side-tool-item {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary-blue);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  cursor: pointer;
  transition: box-shadow 0.3s ease;
  position: relative;
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}
.side-tool-item:hover {
  background: var(--accent-orange);
  transform: scale(1.10);
}
.side-tool-item#backToTop {
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}
.side-tool-item#backToTop.show {
  opacity: 1;
  visibility: visible;
}
.side-tool-tip {
  position: absolute;
  right: 58px;
  background: var(--text-dark);
  color: #fff;
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 4px;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s ease;
}
.side-tool-item:hover .side-tool-tip {
  opacity: 1;
  visibility: visible;
}

/* 各按钮颜色区分 */
.side-tool-phone { background: #e8410a; }
.side-tool-phone:hover { background: #c73208; }
.side-tool-qq { background: #12b7f5; }
.side-tool-qq:hover { background: #0a9fd8; }
.side-tool-wechat { background: #07c160; }
.side-tool-wechat:hover { background: #059e4d; }
.side-tool-appoint { background: var(--primary-blue); }
.side-tool-appoint:hover { background: #0f2d4a; }

/* 微信二维码弹出层 */
.side-tool-qr-tip {
  width: 160px !important;
  white-space: normal !important;
  padding: 10px !important;
  text-align: center;
  line-height: 1;
}
.side-tool-qr-tip .qr-tip-label {
  display: block;
  font-size: 12px;
  color: #fff;
  margin-bottom: 8px;
  white-space: nowrap;
}
.side-tool-qr-tip .qr-img {
  width: 140px;
  height: 140px;
  border-radius: 4px;
  display: block;
}

/* ============================================
   移动端导航面板
   ============================================ */
.mobile-nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  z-index: 1999;
}
.mobile-nav-overlay.show { display: block; }

.mobile-nav-panel {
  position: fixed;
  top: 0;
  right: -85vw;
  width: 85vw;
  max-width: 340px;
  height: 100vh;
  background: #fff;
  z-index: 2000;
  transition: right 0.32s cubic-bezier(0.4,0,0.2,1);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 0 0 40px;
  box-shadow: -4px 0 24px rgba(0,0,0,0.18);
}
.mobile-nav-panel.show { right: 0; }

.mobile-nav-close {
  position: absolute;
  top: 16px;
  right: 16px;
  font-size: 20px;
  color: var(--text-gray);
  cursor: pointer;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.mobile-nav-logo {
  padding: 24px 24px 16px;
  border-bottom: 1px solid var(--border-color);
}
.mobile-nav-menu { padding: 8px 0; }
.mobile-nav-item > a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-dark);
  min-height: 48px;
  transition: background 0.15s;
}
.mobile-nav-item > a:hover { background: var(--bg-light); }
.mobile-nav-item.has-sub > a i {
  transition: transform 0.2s ease;
  font-size: 12px;
}
.mobile-nav-item.open > a i { transform: rotate(180deg); }
.mobile-nav-sub {
  display: none;
  background: var(--bg-light);
}
.mobile-nav-sub a {
  display: block;
  padding: 12px 24px 12px 40px;
  font-size: 14px;
  color: var(--text-gray);
  min-height: 44px;
  display: flex;
  align-items: center;
}
.mobile-nav-sub a:hover { color: var(--accent-orange); }
.mobile-nav-hotline {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px 24px;
  border-top: 1px solid var(--border-color);
  margin-top: 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--primary-blue);
}
.mobile-nav-hotline i { color: var(--accent-orange); }

/* ============================================
   fade-in-up 动画
   ============================================ */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   页面切换
   ============================================ */
.page-view { display: none; }
.section-padding { padding: 80px 0; }

.page-view.active { display: block; }

/* ============================================
   响应式 — 平板
   ============================================ */
@media (max-width: 1024px) {
  .main-nav { display: none; }
  .mobile-toggle { display: flex; flex-direction: column; gap: 5px; cursor: pointer; width: 28px; }
  .mobile-toggle span { display: block; width: 100%; height: 2px; background: #fff; border-radius: 1px; transition: var(--transition); }
  .main-header.scrolled .mobile-toggle span { background: var(--text-dark); }
  .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); }

  .hero-right { display: none; }
  .hero-title { font-size: 38px; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; }
  .about-image { order: -1; }
  .report-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-bar-inner { grid-template-columns: repeat(3, 1fr); }
  .contact-cta { flex-direction: column; text-align: center; gap: 24px; }
  .contact-cta-info { flex-direction: column; align-items: center; }
  .contact-item { text-align: center; }
  .footer-grid { grid-template-columns: repeat(3, 1fr); }
  .insight-card { flex-direction: column; }
  .insight-thumb { width: 100%; min-height: 180px; }
  .insight-info { padding: 16px; }
}

/* ============================================
   响应式 — 手机
   ============================================ */
@media (max-width: 767px) {
  .hero-section { min-height: auto; padding: 100px 0 60px; }
  .hero-title { font-size: 28px; }
  .hero-btns { flex-direction: column; }
  .hero-btns a { width: 100%; justify-content: center; }
  .services-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .report-grid { grid-template-columns: 1fr; }
  .stats-bar-inner { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .nav-hotline { display: none; }
  .section-title { font-size: 26px; }
  .page-banner h1 { font-size: 28px; }
  .about-hero h1 { font-size: 28px; }
  .insight-tabs { flex-wrap: nowrap; overflow-x: auto; justify-content: flex-start; }
  .insight-tab { white-space: nowrap; padding: 10px 16px; font-size: 13px; }
  .article-item { flex-direction: column; }
  .article-thumb { width: 100%; height: 180px; }
}