/* ========================================
   重庆千星汇科技有限公司 - 官网样式
   ======================================== */

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

:root {
  --bg-primary: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-panel: #ffffff;
  --accent-indigo: #005090;
  --accent-purple: #0070c0;
  --accent-blue: #0060b0;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --card-bg: #ffffff;
  --card-border: rgba(0, 0, 0, 0.06);
  --card-hover-border: rgba(0, 80, 144, 0.3);
  --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.06);
  --card-hover-shadow: 0 20px 40px rgba(0, 0, 0, 0.08), 0 0 60px rgba(0, 80, 144, 0.06);
  --gradient-primary: linear-gradient(135deg, #005090, #0070c0);
  --gradient-hero: linear-gradient(135deg, #005090, #0060b0, #0070c0);
  --radius: 12px;
  --radius-lg: 16px;
  --transition: 0.3s ease;
  --font-cn: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  --font-en: "Inter", sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-cn);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.75;
  overflow-x: hidden;
  min-height: 100vh;
}

a {
  text-decoration: none;
  color: inherit;
}

img {
  max-width: 100%;
}

ul {
  list-style: none;
}

/* === Particles Canvas === */
#particles-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* === Container === */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* === Navbar === */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.08);
}

.nav-container {
  width: 100%;
  max-width: 100%;
  padding: 0 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 72px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  cursor: pointer;
  flex: 0 1 auto;
  min-width: 0;
}

.nav-logo-img {
  height: 48px;
  width: auto;
  max-width: min(260px, 20vw);
  object-fit: contain;
  display: block;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 1 auto;
  flex-wrap: wrap;
  gap: 8px;
  margin-inline: auto;
  min-width: 0;
}

.nav-link {
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: var(--transition);
  cursor: pointer;
  white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent-indigo);
  background: rgba(0, 80, 144, 0.08);
}

.nav-cta-btn {
  height: auto;
  line-height: 1.5;
  margin-left: 12px;
  padding: 8px 28px;
  background: var(--gradient-primary);
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  color: white;
  box-shadow: 0 4px 15px rgba(0, 80, 144, 0.3);
  transition: var(--transition);
  white-space: nowrap;
}

.nav-cta-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(0, 80, 144, 0.5);
}

/* Mobile Menu */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* === Page System === */
.page {
  display: none;
  position: relative;
  z-index: 1;
}

.page.active {
  display: block;
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* === Hero === */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  overflow: hidden;
}

.hero-bg-gradient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 40%, rgba(0, 80, 144, 0.08), transparent),
    radial-gradient(ellipse 60% 50% at 80% 20%, rgba(0, 112, 192, 0.05), transparent),
    radial-gradient(ellipse 60% 50% at 20% 80%, rgba(0, 96, 176, 0.04), transparent);
  z-index: -1;
}

.hero-content {
  max-width: 800px;
}

.hero-title {
  font-family: var(--font-cn);
  font-size: clamp(2.25rem, 4.5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.gradient-text {
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(0.9rem, 1.8vw, 1.1rem);
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 40px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 60px;
}

.hero-actions .btn {
  min-width: 180px;
}

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-family: var(--font-cn);
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 15px rgba(0, 80, 144, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(0, 80, 144, 0.5);
}

.btn-lg {
  padding: 18px 40px;
  font-size: 1.1rem;
}

/* === Hero Stats === */
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  padding-top: 40px;
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  flex-wrap: wrap;
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-family: var(--font-en);
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-suffix {
  font-family: var(--font-en);
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  display: block;
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* === Sections === */
.section {
  padding: 60px 0 100px;
  position: relative;
  z-index: 1;
}

.section-alt {
  background: var(--bg-secondary);
}

.section-compact {
  padding-top: 0;
  padding-bottom: 40px;
}

.section-header {
  text-align: center;
  margin-bottom: 24px;
}

.section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(0, 80, 144, 0.08);
  border: 1px solid rgba(0, 80, 144, 0.15);
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent-indigo);
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* === Service Cards === */
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 44px 32px;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  box-shadow: var(--card-shadow);
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-8px);
  border-color: var(--card-hover-border);
  box-shadow: var(--card-hover-shadow);
}

.service-card:hover::before {
  opacity: 1;
}

.service-icon {
  width: 100%;
  height: auto;
  min-height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 0 20px;
  padding: 12px 16px;
  font-size: 1.1rem;
  font-weight: 700;
  text-align: center;
  line-height: 1.3;
  color: #ffffff;
}

.ai-icon {
  background: #005090;
}

.ict-icon {
  background: #005090;
}

.security-icon {
  background: #005090;
}

.data-icon {
  background: #005090;
}

.service-card p {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.card-arrow {
  position: absolute;
  bottom: 24px;
  right: 24px;
  font-size: 1rem;
  color: var(--accent-indigo);
  opacity: 0;
  transform: translateX(-8px);
  transition: var(--transition);
}

.service-card:hover .card-arrow {
  opacity: 1;
  transform: translateX(0);
}

/* === Advantages === */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.advantage-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 44px 32px;
  transition: var(--transition);
  box-shadow: var(--card-shadow);
}

.advantage-card:hover {
  border-color: var(--card-hover-border);
  transform: translateY(-4px);
}

.advantage-icon {
  width: 100%;
  height: auto;
  min-height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 0 20px;
  padding: 12px 16px;
  font-size: 1.1rem;
  font-weight: 700;
  text-align: center;
  line-height: 1.3;
  color: #ffffff;
  background: var(--accent-indigo);
}

.advantage-card p {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* === Partners === */
.partners-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.partner-item {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 20px 16px;
  text-align: center;
  transition: var(--transition);
  box-shadow: var(--card-shadow);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 80px;
}

.partner-item img {
  max-width: 100%;
  max-height: 50px;
  object-fit: contain;
  filter: grayscale(30%);
  transition: var(--transition);
}

.partner-item:hover {
  border-color: var(--card-hover-border);
  background: rgba(0, 80, 144, 0.05);
}

.partner-item:hover img {
  filter: grayscale(0%);
}

/* === CTA Section === */
.cta-section {
  padding: 60px 0 100px;
}

.cta-card {
  background: linear-gradient(135deg, rgba(0, 80, 144, 0.08), rgba(0, 112, 192, 0.06));
  border: 1px solid rgba(0, 80, 144, 0.15);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  text-align: center;
}

.cta-card h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 16px;
}

.cta-card p {
  color: var(--text-secondary);
  margin-bottom: 32px;
  font-size: 1.1rem;
}

/* === Page Hero (Sub Pages) === */
.page-hero {
  position: relative;
  padding: 160px 24px 40px;
  text-align: center;
  overflow: hidden;
}

.page-hero .hero-bg-gradient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 40%, rgba(0, 80, 144, 0.06), transparent),
    radial-gradient(ellipse 60% 50% at 80% 20%, rgba(0, 112, 192, 0.04), transparent);
  z-index: -1;
}

.page-tag {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent-indigo);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.page-title {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 800;
  margin-bottom: 16px;
}

.page-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 900px;
  margin: 0 auto;
  line-height: 1.8;
  text-align: left;
}

/* === Detail Cards (Sub Pages) === */
.detail-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.detail-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  transition: var(--transition);
  box-shadow: var(--card-shadow);
}

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

.detail-card-link {
  display: block;
  text-decoration: none;
  color: inherit;
}

.detail-icon {
  width: 100%;
  height: auto;
  min-height: 48px;
  border-radius: 12px;
  background: #005090;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 0 20px;
  padding: 12px 16px;
  font-size: 1.1rem;
  font-weight: 700;
  text-align: center;
  line-height: 1.3;
}

.detail-card > p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
}

.detail-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
}

.detail-list li {
  font-size: 0.85rem;
  color: var(--text-secondary);
  padding-left: 16px;
  position: relative;
}

.detail-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-indigo);
}

/* === Process Steps === */
.process-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
}

.process-step {
  text-align: center;
  padding: 24px;
  flex: 1;
  min-width: 160px;
}

.step-num {
  font-family: var(--font-en);
  font-size: 2rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
}

.process-step h4 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.process-step p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.process-connector {
  width: 40px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-indigo), var(--accent-purple));
  opacity: 0.4;
}

/* === About Page === */
.about-intro {
  display: flex;
  justify-content: center;
  align-items: center;
}

.about-intro-image {
  display: flex;
  gap: 20px;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.about-intro-image img {
  width: 50%;
  height: auto;
  display: block;
  border-radius: var(--radius-lg);
  box-shadow: var(--card-shadow);
  object-fit: contain;
}

/* === Certifications === */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.cert-item {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  text-align: center;
  transition: var(--transition);
  box-shadow: var(--card-shadow);
}

.cert-item:hover {
  border-color: var(--card-hover-border);
  transform: translateY(-4px);
}

.cert-image {
  width: 100%;
  max-height: 180px;
  object-fit: contain;
  margin-bottom: 16px;
  border-radius: 4px;
}

.cert-item h4 {
  font-size: 0.95rem;
  font-weight: 400;
  margin-bottom: 8px;
}

.cert-item p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* === Contact Page === */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.contact-info-box,
.contact-map-box {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  box-shadow: var(--card-shadow);
}

.contact-map-box {
  padding: 16px;
  display: flex;
  flex-direction: column;
  height: 100%;
}

#contact-map {
  flex: 1;
  min-height: 500px;
  border-radius: var(--radius);
  overflow: hidden;
  width: 100%;
}

/* 百度地图信息窗体透明背景 */
#contact-map .BMap_pop div,
#contact-map .BMap_bubble_content,
#contact-map .BMap_top,
#contact-map .BMap_center,
#contact-map .BMap_bottom,
#contact-map .BMap_shadow {
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  padding: 0 !important;
  margin: 0 !important;
}

#contact-map .BMap_bubble_content {
  padding: 0 !important;
  margin: 0 !important;
}

/* 强制缩小信息窗体容器 */
#contact-map .BMap_pop,
#contact-map .BMap_pop .BMap_top,
#contact-map .BMap_pop .BMap_center,
#contact-map .BMap_pop .BMap_bottom {
  width: auto !important;
  min-width: 0 !important;
  max-width: none !important;
}

#contact-map .BMap_pop table,
#contact-map .BMap_pop tbody,
#contact-map .BMap_pop tr,
#contact-map .BMap_pop td {
  width: auto !important;
  min-width: 0 !important;
  padding: 0 !important;
  margin: 0 !important;
}

#contact-map .BMap_pop .BMap_center td {
  padding: 0 !important;
  margin: 0 !important;
}

/* 信息窗体内容容器 */
#contact-map .BMap_bubble_content > div {
  width: auto !important;
  white-space: nowrap;
  padding: 0 !important;
  margin: 0 !important;
}

.contact-info-box h3 {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 8px;
}

/* Contact Info */
.contact-info-list {
  margin-top: 24px;
}

.contact-info-item {
  display: flex;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.contact-info-item:last-child {
  border-bottom: none;
}

.contact-info-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(0, 80, 144, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: #0070c0;
}

.contact-info-icon svg {
  width: 20px;
  height: 20px;
}

.contact-info-item h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.contact-info-item p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.contact-info-sub {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

/* === Footer === */
.footer {
  background: var(--bg-panel);
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  padding: 60px 0 30px;
  position: relative;
  z-index: 1;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 12px;
}
.footer-logo-img {
  height: 36px;
  width: auto;
  max-width: 195px;
  object-fit: contain;
  display: block;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.footer-links h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-links a,
.footer-links p {
  display: block;
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding: 4px 0;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--accent-indigo);
}

.footer-bottom {
  border-top: 1px solid rgba(0, 0, 0, 0.05);
  padding-top: 24px;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: var(--text-secondary);
  opacity: 0.7;
}

.footer-bottom a {
  color: var(--text-secondary);
  text-decoration: none;
}

/* === Fade In Animation === */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* === Culture Section (联系我们页面) === */
.culture-section {
  display: flex;
  gap: 48px;
  margin: 0 auto;
  width: 100%;
  padding: 16px 48px 48px;
  background: transparent;
  align-items: stretch;
}

.culture-image {
  flex: 0 0 50%;
  max-width: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0;
}

.culture-image img {
  width: 100%;
  max-width: 100%;
  height: 100%;
  object-fit: contain;
}

.culture-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 24px;
}

.culture-block {
  width: 100%;
}

.culture-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  letter-spacing: 0.01em;
}

.culture-desc {
  font-size: 1.2rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin: 0;
}

/* === Responsive === */

/* 导航栏紧凑适配：窗口变窄或浏览器高缩放（等效 CSS 宽度变小）时收缩间距，避免碰撞 */
@media (min-width: 1025px) and (max-width: 1440px) {
  .nav-container {
    padding: 0 20px;
    gap: 10px;
  }

  .nav-logo-img {
    height: 40px;
    max-width: min(200px, 18vw);
  }

  .nav-links {
    gap: 2px;
  }

  .nav-link {
    padding: 6px 9px;
    font-size: 0.9rem;
  }

  .nav-cta-btn {
    padding: 7px 16px;
    font-size: 0.9rem;
    margin-left: 4px;
  }
}

/* 导航汉堡菜单：断点从 768px 提高到 1024px，避免窄窗口下导航项挤压重叠 */
@media (max-width: 1024px) {
  .nav-container {
    padding: 0 16px;
  }

  .nav-links {
    display: none;
    position: fixed;
    top: 72px;
    left: 16px;
    width: 50%;
    max-width: 280px;
    bottom: auto;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 16px;
    gap: 4px;
    overflow-y: auto;
    z-index: 999;
    max-height: calc(100vh - 88px);
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    transform: none;
    margin-inline: 0;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-link {
    padding: 12px 16px;
    font-size: 0.95rem;
    width: 100%;
    background: #005090;
    color: #ffffff;
    border-radius: 8px;
    text-align: center;
    white-space: nowrap;
  }

  .nav-cta-btn {
    font-size: 0.95rem;
    margin-left: 0;
    margin-top: 8px;
    text-align: center;
    padding: 12px;
  }

  .mobile-menu-btn {
    display: flex;
  }
}

@media (max-width: 1024px) {
  .services-grid,
  .advantages-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .partners-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .hero-stats {
    flex-wrap: wrap;
    gap: 24px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .about-intro {
    grid-template-columns: 1fr;
  }

  .contact-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  /* 导航其余规则已在 max-width:1024px 块中定义 */
  .nav-container {
    padding: 0 8px;
  }

  .nav-logo-img {
    height: 36px;
    max-width: 150px;
  }

  .services-grid,
  .advantages-grid {
    grid-template-columns: 1fr;
  }

  .detail-grid {
    grid-template-columns: 1fr;
  }

  .culture-section {
    flex-direction: column;
    padding: 16px 24px 40px;
    gap: 40px;
  }

  .culture-image {
    flex: 0 0 auto;
    max-width: 80%;
  }

  .culture-image img {
    max-width: 100%;
  }

  .culture-content {
    gap: 32px;
  }

  .culture-title {
    font-size: 1.3rem;
  }

  .culture-desc {
    font-size: 1.1rem;
  }

  .detail-list {
    grid-template-columns: 1fr;
  }

  .partners-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .cert-grid {
    grid-template-columns: 1fr;
  }

  .hero-stats {
    gap: 32px;
  }

  .hero {
    padding: 120px 20px 60px;
  }

  .section {
    padding: 60px 0;
  }

  .page-hero {
    padding: 120px 20px 60px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .process-steps {
    flex-direction: column;
  }

  .process-connector {
    width: 2px;
    height: 24px;
  }

  .contact-info-box,
  .contact-map-box {
    padding: 28px 20px;
  }

  .about-intro-image {
    flex-direction: column;
  }

  .about-intro-image img {
    width: 100%;
  }
}