/* 电子废弃物处置中心 - 科技蓝绿主题 */
:root {
  --primary: #0d7377;
  --primary-dark: #095456;
  --primary-light: #14a3a8;
  --accent: #14ffec;
  --accent-soft: #7fefea;
  --bg: #f0f7f8;
  --bg-white: #ffffff;
  --bg-dark: #0a2e36;
  --text: #1a2e35;
  --text-light: #4a6268;
  --border: #c8e0e3;
  --shadow: 0 2px 12px rgba(13,115,119,0.12);
  --shadow-hover: 0 6px 24px rgba(13,115,119,0.2);
  --radius: 8px;
  --warning: #e67e22;
  --danger: #c0392b;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
}

a { color: var(--primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--primary-dark); }

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

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

/* 顶部条 */
.top-bar {
  background: var(--bg-dark);
  color: #a8c8cc;
  font-size: 13px;
  padding: 6px 0;
}
.top-bar .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; }
.top-bar a { color: var(--accent-soft); }

/* 头部导航 */
header {
  background: var(--bg-white);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}
header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
}

.logo-img {
  height: 38px;
  width: auto;
  display: block;
  object-fit: contain;
  flex-shrink: 0;
}

.logo-icon {
  width: 40px; height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 20px;
}
nav ul { list-style: none; display: flex; gap: 4px; flex-wrap: wrap; }
nav a {
  display: block;
  padding: 8px 14px;
  border-radius: var(--radius);
  color: var(--text);
  font-size: 15px;
  font-weight: 500;
}
nav a:hover, nav a.active {
  background: var(--primary);
  color: #fff;
}
.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--primary);
}

/* Hero区域 */
.hero {
  background: linear-gradient(135deg, var(--bg-dark) 0%, var(--primary-dark) 50%, var(--primary) 100%);
  color: #fff;
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(20,255,236,0.08) 0%, transparent 70%);
  border-radius: 50%;
}
.hero .container { position: relative; z-index: 1; }
.hero h1 {
  font-size: 38px;
  line-height: 1.3;
  margin-bottom: 20px;
  font-weight: 700;
}
.hero p {
  font-size: 17px;
  color: #c8e0e3;
  max-width: 700px;
  margin-bottom: 30px;
}
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }

/* 按钮 */
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  border: none;
  text-align: center;
}
.btn-primary {
  background: var(--accent);
  color: var(--bg-dark);
}
.btn-primary:hover {
  background: var(--accent-soft);
  color: var(--bg-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(20,255,236,0.3);
}
.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.4);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* 数据条 */
.stats-bar {
  background: var(--bg-white);
  padding: 30px 0;
  box-shadow: var(--shadow);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}
.stat-item .num {
  font-size: 32px;
  font-weight: 700;
  color: var(--primary);
}
.stat-item .label {
  font-size: 14px;
  color: var(--text-light);
  margin-top: 4px;
}

/* 通用区块 */
.section {
  padding: 60px 0;
}
.section-title {
  text-align: center;
  margin-bottom: 40px;
}
.section-title h2 {
  font-size: 30px;
  color: var(--text);
  margin-bottom: 10px;
}
.section-title p {
  color: var(--text-light);
  font-size: 16px;
}

/* 卡片网格 */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.card {
  background: var(--bg-white);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  transition: all 0.3s;
  border-top: 3px solid var(--primary);
}
.card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.card-icon {
  font-size: 36px;
  margin-bottom: 16px;
}
.card h3 {
  font-size: 19px;
  margin-bottom: 12px;
  color: var(--text);
}
.card p {
  color: var(--text-light);
  font-size: 15px;
  line-height: 1.7;
}
.card .card-link {
  display: inline-block;
  margin-top: 16px;
  font-weight: 600;
  font-size: 14px;
}

/* 流程步骤 */
.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  position: relative;
}
.process-step {
  text-align: center;
  position: relative;
}
.step-num {
  width: 50px;
  height: 50px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  margin: 0 auto 14px;
}
.process-step h4 {
  font-size: 16px;
  margin-bottom: 8px;
  color: var(--text);
}
.process-step p {
  font-size: 13px;
  color: var(--text-light);
}

/* 双栏布局 */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

/* 内容页 */
.content-page {
  padding: 40px 0 60px;
}
.content-page .page-header {
  background: linear-gradient(135deg, var(--bg-dark), var(--primary-dark));
  color: #fff;
  padding: 50px 0;
  margin: -40px 0 40px;
}
.content-page .page-header h1 {
  font-size: 32px;
  margin-bottom: 12px;
}
.content-page .page-header p {
  color: #c8e0e3;
  font-size: 16px;
  max-width: 800px;
}
.breadcrumb {
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 20px;
}
.breadcrumb a { color: var(--primary); }

.article-content {
  background: var(--bg-white);
  padding: 40px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.article-content h2 {
  font-size: 24px;
  color: var(--primary-dark);
  margin: 36px 0 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border);
}
.article-content h2:first-child { margin-top: 0; }
.article-content h3 {
  font-size: 19px;
  color: var(--text);
  margin: 24px 0 12px;
}
.article-content p {
  margin-bottom: 16px;
  color: var(--text);
}
.article-content ul, .article-content ol {
  margin: 12px 0 16px 24px;
}
.article-content li {
  margin-bottom: 8px;
  color: var(--text);
}
.article-content strong { color: var(--primary-dark); }

/* 提示框 */
.notice-box {
  background: #e8f6f7;
  border-left: 4px solid var(--primary);
  padding: 16px 20px;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 20px 0;
}
.notice-box.warning {
  background: #fef5e7;
  border-left-color: var(--warning);
}
.notice-box p { margin: 0; }

/* 表格 */
.data-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 15px;
}
.data-table th {
  background: var(--primary);
  color: #fff;
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
}
.data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}
.data-table tr:nth-child(even) { background: #f7fbfc; }
.data-table tr:hover { background: #e8f6f7; }

/* FAQ */
.faq-item {
  background: var(--bg-white);
  border-radius: var(--radius);
  margin-bottom: 12px;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.faq-question {
  padding: 18px 24px;
  cursor: pointer;
  font-weight: 600;
  font-size: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text);
}
.faq-question::after {
  content: '+';
  font-size: 22px;
  color: var(--primary);
  transition: transform 0.3s;
}
.faq-item.open .faq-question::after {
  transform: rotate(45deg);
}
.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: all 0.3s;
  color: var(--text-light);
}
.faq-item.open .faq-answer {
  padding: 0 24px 20px;
  max-height: 500px;
}

/* CTA区块 */
.cta-section {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
  padding: 50px 0;
  text-align: center;
}
.cta-section h2 {
  font-size: 28px;
  margin-bottom: 12px;
}
.cta-section p {
  color: #c8e0e3;
  margin-bottom: 24px;
  font-size: 16px;
}
.cta-section .phone-large {
  font-size: 32px;
  font-weight: 700;
  color: var(--accent);
  margin: 16px 0;
}

/* 页脚 */
footer {
  background: var(--bg-dark);
  color: #8ba8ad;
  padding: 50px 0 20px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 30px;
  margin-bottom: 30px;
}
.footer-col h4 {
  color: #fff;
  font-size: 16px;
  margin-bottom: 16px;
}
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 8px; }
.footer-col a { color: #8ba8ad; font-size: 14px; }
.footer-col a:hover { color: var(--accent); }
.footer-col p { font-size: 14px; line-height: 1.8; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 20px;
  text-align: center;
  font-size: 13px;
  color: #5a7a7f;
}

/* 侧边栏 */
.sidebar {
  background: var(--bg-white);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}
.sidebar h3 {
  font-size: 18px;
  margin-bottom: 16px;
  color: var(--primary-dark);
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border);
}
.sidebar ul { list-style: none; }
.sidebar li { margin-bottom: 10px; }
.sidebar a {
  display: block;
  padding: 8px 12px;
  border-radius: 4px;
  font-size: 14px;
  color: var(--text);
}
.sidebar a:hover { background: var(--bg); color: var(--primary); }

.contact-info-box {
  background: var(--bg-white);
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: var(--shadow);
}
.contact-info-box .info-row {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 20px;
}
.contact-info-box .info-icon {
  font-size: 24px;
  min-width: 30px;
}
.contact-info-box .info-text h4 {
  font-size: 15px;
  color: var(--text-light);
  margin-bottom: 4px;
}
.contact-info-box .info-text p {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
}

/* 标签 */
.tag {
  display: inline-block;
  padding: 4px 12px;
  background: #e8f6f7;
  color: var(--primary);
  border-radius: 20px;
  font-size: 13px;
  margin: 2px 4px 2px 0;
}

/* 响应式 */
@media (max-width: 900px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(3, 1fr); }
  .two-col { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 28px; }
  .menu-toggle { display: block; }
  nav { display: none; width: 100%; }
  nav.open { display: block; }
  nav ul { flex-direction: column; padding: 10px 0; }
  header .container { flex-wrap: wrap; }
}
@media (max-width: 600px) {
  .card-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .article-content { padding: 24px; }
  .hero { padding: 50px 0; }
  .hero h1 { font-size: 24px; }
}