/* ===== 晟诺光电 - 公司官网样式 ===== */
/* 深海蓝主题: #1a5fb4 / #0d1b2a */

:root {
  --primary: #1a5fb4;
  --primary-dark: #0d1b2a;
  --primary-light: #2e86de;
  --accent: #1a5fb4;
  --text-dark: #1a1a2e;
  --text-gray: #555;
  --text-light: #888;
  --bg-light: #f8f9fa;
  --bg-white: #ffffff;
  --border: #e8ecf1;
  --shadow: 0 2px 20px rgba(0,0,0,0.08);
  --shadow-hover: 0 8px 30px rgba(26,95,180,0.15);
  --radius: 12px;
  --transition: all 0.3s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text-dark);
  line-height: 1.8;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

ul { list-style: none; }

img { max-width: 100%; height: auto; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== 顶部导航 ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: #fff;
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.header.scrolled {
  box-shadow: 0 2px 20px rgba(0,0,0,0.1);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  padding: 0 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 18px;
}

.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary-dark);
}

.logo-text span {
  color: var(--primary);
}

.logo-sub {
  font-size: 11px;
  color: var(--text-light);
  display: block;
  margin-top: -2px;
  letter-spacing: 1px;
}

/* Logo 图片样式 */
.logo img {
  height: 38px;
  width: auto;
  display: block;
  background: #fff;
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  font-size: 14px;
  color: var(--text-dark);
  font-weight: 500;
  position: relative;
  padding: 4px 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-links a.active {
  color: var(--primary);
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 5px;
}

.mobile-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== 页面标题横幅 ===== */
.page-banner {
  padding: 140px 0 60px;
  background: linear-gradient(135deg, var(--primary-dark) 0%, #1a2a4a 50%, var(--primary-dark) 100%);
  color: white;
  text-align: center;
  position: relative;
  overflow: hidden;
}

/* 各页面专属 Banner 背景 */
.page-banner-about {
  background: linear-gradient(135deg, #0d1b2a 0%, #1b2838 40%, #1a3a5c 100%);
}

.page-banner-products {
  background: linear-gradient(135deg, #0d1b2a 0%, #0f2b4a 40%, #1a5fb4 100%);
}

.page-banner-quality {
  background: linear-gradient(135deg, #0d1b2a 0%, #0f2a3a 40%, #1a6b5c 100%);
}

.page-banner-capability {
  background: linear-gradient(135deg, #0d1b2a 0%, #1a1a3a 40%, #3a1a5c 100%);
}

.page-banner-service {
  background: linear-gradient(135deg, #0d1b2a 0%, #1a2838 40%, #1a4a6a 100%);
}

.page-banner-contact {
  background: linear-gradient(135deg, #0d1b2a 0%, #1a2238 40%, #1a3a5a 100%);
}

/* 各页面 Banner 装饰元素 */
.page-banner-about::after {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(26,95,180,0.15) 0%, transparent 70%);
  top: -100px;
  right: -50px;
}

.page-banner-products::after {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(46,134,222,0.12) 0%, transparent 70%);
  bottom: -150px;
  left: -100px;
}

.page-banner-quality::after {
  content: '';
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(26,107,92,0.2) 0%, transparent 70%);
  top: -60px;
  left: 10%;
}

.page-banner-capability::after {
  content: '';
  position: absolute;
  width: 250px;
  height: 250px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(90,40,140,0.15) 0%, transparent 70%);
  bottom: -80px;
  right: 15%;
}

.page-banner-service::after {
  content: '';
  position: absolute;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(26,74,106,0.2) 0%, transparent 70%);
  top: -120px;
  right: 5%;
}

.page-banner-contact::after {
  content: '';
  position: absolute;
  width: 350px;
  height: 350px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(26,58,90,0.18) 0%, transparent 70%);
  bottom: -100px;
  left: 20%;
}

.page-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 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='0.03'%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");
  opacity: 0.5;
}

.page-banner h1 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 12px;
  position: relative;
}

.page-banner p {
  font-size: 16px;
  opacity: 0.8;
  max-width: 600px;
  margin: 0 auto;
  position: relative;
}

/* ===== 页面通用区域 ===== */
.section {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 50px;
}

.section-title h2 {
  font-size: 30px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 10px;
}

.section-title .subtitle {
  font-size: 15px;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
}

.section-title::after {
  content: '';
  display: block;
  width: 50px;
  height: 3px;
  background: var(--primary);
  margin: 15px auto 0;
  border-radius: 2px;
}

.bg-light {
  background: var(--bg-light);
}

/* ===== 首页 Hero ===== */
.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, var(--primary-dark) 0%, #0f2440 40%, #162d52 70%, var(--primary-dark) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: white;
  position: relative;
  overflow: hidden;
  padding-top: 72px;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(26,95,180,0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(46,134,222,0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  padding: 0 20px;
}

.hero-badge {
  display: inline-block;
  padding: 6px 20px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 20px;
  font-size: 13px;
  letter-spacing: 2px;
  margin-bottom: 30px;
  opacity: 0.8;
}

.hero h1 {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.3;
}

.hero h1 span {
  color: #5ba3ec;
}

.hero .hero-sub {
  font-size: 20px;
  font-weight: 300;
  margin-bottom: 20px;
  opacity: 0.9;
}

.hero p {
  font-size: 16px;
  opacity: 0.7;
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

.btn-primary {
  background: var(--primary);
  color: white;
}

.btn-primary:hover {
  background: #155099;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(26,95,180,0.3);
}

.btn-outline {
  background: transparent;
  color: white;
  border: 2px solid rgba(255,255,255,0.3);
}

.btn-outline:hover {
  border-color: white;
  background: rgba(255,255,255,0.1);
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 60px;
  margin-top: 50px;
  padding-top: 40px;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.hero-stat h3 {
  font-size: 32px;
  font-weight: 700;
  color: #5ba3ec;
}

.hero-stat p {
  font-size: 13px;
  opacity: 0.6;
  margin: 0;
}

/* ===== 首页特色卡片 ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--border);
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.feature-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, rgba(26,95,180,0.1), rgba(46,134,222,0.05));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 28px;
}

.feature-card h3 {
  font-size: 17px;
  margin-bottom: 8px;
  color: var(--primary-dark);
}

.feature-card p {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.6;
}

/* ===== 关于我们 ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-image {
  overflow: hidden;
}

.about-image-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

/* ===== 认证证书卡片 ===== */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 1000px;
  margin: 0 auto;
}

.cert-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 14px 18px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.cert-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}

.cert-card img {
  display: block;
  margin: 0 auto 12px;
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 260px;
  border-radius: 8px;
  border: 1px solid #eee;
}

.cert-card h3 {
  font-size: 18px;
  color: var(--primary-dark);
  margin-bottom: 4px;
}

.cert-card p {
  font-size: 13px;
  color: var(--text-light);
}

/* ===== 产品卡片配图 ===== */
.prod-img {
  display: block;
  margin: 0 auto 16px;
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 200px;
  border-radius: 8px;
  border: 1px solid var(--border);
}

.about-image h3 {
  font-size: 24px;
  margin-bottom: 12px;
}

.about-image p {
  opacity: 0.7;
  font-size: 14px;
}

.about-text h2 {
  font-size: 28px;
  margin-bottom: 16px;
  color: var(--primary-dark);
}

.about-text h2 span {
  color: var(--primary);
}

.about-text p {
  color: var(--text-gray);
  margin-bottom: 16px;
  line-height: 1.9;
}

.about-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 24px;
}

.about-meta-item {
  padding: 16px;
  background: var(--bg-light);
  border-radius: 8px;
}

.about-meta-item .label {
  font-size: 12px;
  color: var(--text-light);
}

.about-meta-item .value {
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
  margin-top: 4px;
}

/* 发展历程时间线 */
.timeline {
  position: relative;
  padding-left: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--primary), var(--primary-light), transparent);
}

.timeline-item {
  position: relative;
  margin-bottom: 36px;
  padding-left: 20px;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -27px;
  top: 6px;
  width: 12px;
  height: 12px;
  background: var(--primary);
  border-radius: 50%;
  border: 3px solid white;
  box-shadow: 0 0 0 2px var(--primary);
}

.timeline-item .date {
  font-size: 14px;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 4px;
}

.timeline-item .content {
  font-size: 14px;
  color: var(--text-gray);
  line-height: 1.7;
}

/* ===== 产品中心 ===== */
.product-categories {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.product-cat {
  background: var(--bg-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--border);
}

.product-cat:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.product-cat-header {
  padding: 24px;
  background: linear-gradient(135deg, rgba(26,95,180,0.05), rgba(46,134,222,0.02));
  border-bottom: 1px solid var(--border);
}

.product-cat-header .icon {
  font-size: 32px;
  margin-bottom: 8px;
}

.product-cat-header h3 {
  font-size: 18px;
  color: var(--primary-dark);
}

.product-cat-header p {
  font-size: 13px;
  color: var(--text-light);
  margin-top: 4px;
}

/* 带图片的产品标题：文字左、图片右 */
.product-cat-header-img {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}

.prod-img-header {
  display: block;
  width: auto;
  height: auto;
  max-width: 120px;
  max-height: 120px;
  border-radius: 8px;
  border: 1px solid var(--border);
  flex-shrink: 0;
}

.product-cat-body {
  padding: 20px 24px;
}

.product-cat-body ul li {
  padding: 8px 0;
  font-size: 14px;
  color: var(--text-gray);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
}

.product-cat-body ul li:last-child {
  border-bottom: none;
}

.product-cat-body ul li::before {
  content: '▸';
  color: var(--primary);
  font-weight: 700;
}

/* 品牌展示 */
.brands-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 20px;
  text-align: center;
}

.brand-item {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px 16px;
  transition: var(--transition);
}

.brand-item:hover {
  box-shadow: var(--shadow);
  border-color: var(--primary);
}

.brand-item .brand-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--primary-dark);
}

.brand-item .brand-desc {
  font-size: 12px;
  color: var(--text-light);
  margin-top: 4px;
}

/* ===== 品质管控 ===== */
.quality-flow {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px;
  margin-bottom: 40px;
}

.quality-step {
  text-align: center;
  padding: 24px 16px;
  background: var(--bg-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  position: relative;
}

.quality-step:not(:last-child)::after {
  content: '→';
  position: absolute;
  right: -14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  color: var(--primary);
  font-weight: 700;
}

.quality-step .step-num {
  width: 32px;
  height: 32px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  margin: 0 auto 12px;
}

.quality-step h4 {
  font-size: 14px;
  color: var(--primary-dark);
}

.quality-step p {
  font-size: 12px;
  color: var(--text-light);
  margin-top: 4px;
}

.quality-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-top: 40px;
}

.metric-card {
  text-align: center;
  padding: 30px 20px;
  background: var(--bg-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.metric-card .metric-value {
  font-size: 36px;
  font-weight: 700;
  color: var(--primary);
}

.metric-card .metric-label {
  font-size: 14px;
  color: var(--text-gray);
  margin-top: 8px;
}

/* ===== 设备能力 ===== */
.equipment-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.equipment-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: var(--transition);
}

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

.equipment-card .eq-icon {
  font-size: 36px;
  margin-bottom: 16px;
}

.equipment-card h3 {
  font-size: 17px;
  color: var(--primary-dark);
  margin-bottom: 8px;
}

.equipment-card ul li {
  font-size: 13px;
  color: var(--text-gray);
  padding: 4px 0;
  padding-left: 16px;
  position: relative;
}

.equipment-card ul li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: 700;
}

/* 带图片的设备卡片 */
.equipment-card-img {
  grid-column: 1 / -1;
}

.equipment-card-img .eq-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  margin-bottom: 16px;
}

.equipment-card-img .eq-card-header h3 {
  font-size: 18px;
  margin-bottom: 4px;
}

.equipment-card-img .eq-card-header p {
  font-size: 14px;
  color: var(--text-gray);
  margin: 0;
}

.equipment-card-img .eq-card-img {
  width: 120px;
  height: auto;
  flex-shrink: 0;
  border-radius: 8px;
  border: 1px solid var(--border);
}

/* ===== 客户服务 ===== */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 16px;
}

.client-logo {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  text-align: center;
  font-weight: 600;
  font-size: 14px;
  color: var(--text-dark);
  transition: var(--transition);
}

.client-logo:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
  color: var(--primary);
}

/* Service promises */
.service-promises {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
  margin-top: 40px;
}

.promise-card {
  text-align: center;
  padding: 36px 24px;
  background: var(--bg-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: var(--transition);
}

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

.promise-card .promise-icon {
  font-size: 36px;
  margin-bottom: 16px;
}

.promise-card h3 {
  font-size: 17px;
  color: var(--primary-dark);
  margin-bottom: 8px;
}

.promise-card p {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.7;
}

/* ===== 联系我们 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
}

.contact-info h3 {
  font-size: 22px;
  color: var(--primary-dark);
  margin-bottom: 20px;
}

.contact-item {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
}

.contact-item .ci-icon {
  width: 40px;
  height: 40px;
  background: rgba(26,95,180,0.1);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.contact-item .ci-label {
  font-size: 12px;
  color: var(--text-light);
}

.contact-item .ci-value {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-dark);
}

.contact-form {
  background: var(--bg-white);
  padding: 36px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  transition: var(--transition);
  background: var(--bg-light);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26,95,180,0.1);
  background: white;
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.btn-submit {
  width: 100%;
  padding: 14px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.btn-submit:hover {
  background: #155099;
}

/* ===== 地图区域 ===== */
.map-section {
  height: 350px;
  background: var(--bg-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  font-size: 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin-top: 40px;
}

.map-placeholder {
  text-align: center;
}

.map-placeholder .map-icon {
  font-size: 40px;
  margin-bottom: 12px;
}

/* ===== 页脚 ===== */
.footer {
  background: var(--primary-dark);
  color: white;
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-about h3 {
  font-size: 20px;
  margin-bottom: 12px;
}

.footer-about p {
  font-size: 13px;
  opacity: 0.6;
  line-height: 1.8;
}

.footer-about .footer-banner {
  max-width: 50%;
  width: auto;
  height: auto;
  display: block;
  border-radius: 8px;
}

.footer-links h4 {
  font-size: 15px;
  margin-bottom: 16px;
  opacity: 0.9;
}

.footer-links ul li {
  margin-bottom: 10px;
}

.footer-links ul li a {
  font-size: 13px;
  opacity: 0.5;
  transition: var(--transition);
}

.footer-links ul li a:hover {
  opacity: 1;
  padding-left: 4px;
}

.footer-contact h4 {
  font-size: 15px;
  margin-bottom: 16px;
  opacity: 0.9;
}

.footer-contact p {
  font-size: 13px;
  opacity: 0.5;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
  text-align: center;
  font-size: 13px;
  opacity: 0.4;
}

/* ===== 响应式 ===== */
@media (max-width: 992px) {
  .hero h1 { font-size: 36px; }
  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .hero-stats {
    gap: 30px;
    flex-wrap: wrap;
  }
  .quality-step:not(:last-child)::after {
    display: none;
  }
  .cert-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: 20px;
    gap: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
  }

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

  .mobile-toggle {
    display: flex;
  }

  .hero h1 { font-size: 28px; }
  .hero .hero-sub { font-size: 16px; }
  .hero h1 { font-size: 28px; }
  .section { padding: 50px 0; }
  .section-title h2 { font-size: 24px; }
  .page-banner h1 { font-size: 28px; }
  .hero-stats { gap: 20px; }
  .hero-stat h3 { font-size: 24px; }
  .footer-grid { grid-template-columns: 1fr; }
  .about-meta { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .hero-stats { flex-direction: column; gap: 16px; }
  .hero-buttons { flex-direction: column; }
  .hero-buttons .btn { width: 100%; justify-content: center; }
  .cert-grid {
    grid-template-columns: 1fr;
  }
}