/* 基础样式设置 */
:root {
  --primary: #165DFF;
  --primary-light: #E8F3FF;
  --secondary: #FF7D00;
  --secondary-light: #FFF3E0;
  --dark: #1D2129;
  --gray: #86909C;
  --light-gray: #F2F3F5;
  --white: #FFFFFF;
  --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  --radius: 8px;
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Inter', 'system-ui', sans-serif;
  color: var(--dark);
  background-color: #F7F8FA;
  line-height: 1.6;
}

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

/* 导航栏样式 */
header {
  background-color: var(--white);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 0;
}

.logo {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo i {
  font-size: 1.5em;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 30px;
}

.nav-links a {
  text-decoration: none;
  color: var(--dark);
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

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

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

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: var(--primary);
  border-radius: 3px;
}

.hamburger {
  display: none;
  font-size: 1.5rem;
  cursor: pointer;
}

/* 英雄区域样式 */
.hero {
  background: linear-gradient(135deg, var(--primary-light), #E6F7FF);
  padding: 80px 0;
  margin-bottom: 60px;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 20px;
}

.hero h1 {
  font-size: 2.8rem;
  color: var(--dark);
  max-width: 700px;
}

.hero p {
  font-size: 1.1rem;
  color: var(--dark);
  opacity: 0.8;
  max-width: 600px;
}

.cta-buttons {
  display: flex;
  gap: 20px;
  margin-top: 20px;
}

.btn {
  padding: 12px 24px;
  border-radius: var(--radius);
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  display: inline-block;
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

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

.btn-primary:hover {
  background-color: #0E42D2;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(22, 93, 255, 0.3);
}

.btn-secondary {
  background-color: var(--white);
  color: var(--primary);
  border: 1px solid var(--primary);
}

.btn-secondary:hover {
  background-color: var(--primary-light);
  transform: translateY(-2px);
}

/* 板块通用样式 */
.section {
  padding: 60px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 40px;
}

.section-title {
  font-size: 2rem;
  margin-bottom: 15px;
  color: var(--dark);
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background-color: var(--secondary);
  border-radius: 2px;
}

.section-desc {
  color: var(--gray);
  max-width: 700px;
  margin: 0 auto;
}

/* 卡片样式 */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 30px;
}

.card {
  background-color: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.card-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.card-content {
  padding: 25px;
}

.card-category {
  display: inline-block;
  padding: 4px 10px;
  background-color: var(--primary-light);
  color: var(--primary);
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.card-title {
  font-size: 1.3rem;
  margin-bottom: 15px;
  transition: var(--transition);
}

.card:hover .card-title {
  color: var(--primary);
}

.card-desc {
  color: var(--gray);
  margin-bottom: 20px;
  font-size: 0.95rem;
}

.card-link {
  display: inline-flex;
  align-items: center;
  color: var(--primary);
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
}

.card-link i {
  margin-left: 5px;
  transition: var(--transition);
}

.card-link:hover {
  color: #0E42D2;
}

.card-link:hover i {
  transform: translateX(5px);
}

/* 技巧和法规页面样式 */
.article-container {
  display: grid;
  grid-template-columns: 3fr 1fr;
  gap: 40px;
  margin-top: 40px;
}

.main-content {
  background-color: var(--white);
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: var(--shadow);
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.sidebar-card {
  background-color: var(--white);
  border-radius: var(--radius);
  padding: 25px;
  box-shadow: var(--shadow);
}

.sidebar-title {
  font-size: 1.2rem;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--light-gray);
}

.sidebar-links {
  list-style: none;
}

.sidebar-links li {
  margin-bottom: 15px;
}

.sidebar-links a {
  text-decoration: none;
  color: var(--dark);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 10px;
}

.sidebar-links a:hover {
  color: var(--primary);
  padding-left: 5px;
}

.article-header {
  margin-bottom: 30px;
}

.article-title {
  font-size: 2rem;
  margin-bottom: 15px;
}

.article-meta {
  display: flex;
  align-items: center;
  color: var(--gray);
  font-size: 0.9rem;
  gap: 20px;
}

.article-content h2 {
  font-size: 1.5rem;
  margin: 30px 0 15px;
  color: var(--primary);
}

.article-content p {
  margin-bottom: 15px;
  line-height: 1.8;
}

.article-content ul {
  margin: 20px 0;
  padding-left: 25px;
}

.article-content li {
  margin-bottom: 10px;
}

.tip-box {
  background-color: var(--primary-light);
  border-left: 4px solid var(--primary);
  padding: 15px 20px;
  margin: 20px 0;
  border-radius: 0 var(--radius) var(--radius) 0;
}

.law-update {
  background-color: var(--secondary-light);
  border-left: 4px solid var(--secondary);
  padding: 15px 20px;
  margin: 20px 0;
  border-radius: 0 var(--radius) var(--radius) 0;
}

/* FAQ页面样式 */
.faq-container {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background-color: var(--white);
  border-radius: var(--radius);
  margin-bottom: 15px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 20px;
  text-align: left;
  background: none;
  border: none;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition);
}

.faq-question:hover {
  background-color: var(--light-gray);
}

.faq-question i {
  transition: var(--transition);
}

.faq-answer {
  padding: 0 20px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-answer.active {
  padding: 0 20px 20px;
  max-height: 500px;
}

.faq-question.active i {
  transform: rotate(180deg);
}

/* 关于页面样式 */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.about-img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.about-text h2 {
  font-size: 1.8rem;
  margin-bottom: 20px;
}

.about-text p {
  margin-bottom: 15px;
}

.contact-info {
  margin-top: 30px;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 15px;
}

.contact-item i {
  color: var(--primary);
  font-size: 1.2rem;
}

/* 页脚样式 */
footer {
  background-color: var(--dark);
  color: var(--white);
  padding: 60px 0 30px;
  margin-top: 60px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white);
  text-decoration: none;
  display: inline-block;
  margin-bottom: 20px;
}

.footer-desc {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 20px;
}

.social-links {
  display: flex;
  gap: 15px;
}

.social-links a {
  color: var(--white);
  background-color: rgba(255, 255, 255, 0.1);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.social-links a:hover {
  background-color: var(--primary);
  transform: translateY(-3px);
}

.footer-title {
  font-size: 1.1rem;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}

.footer-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 3px;
  background-color: var(--secondary);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--white);
  padding-left: 5px;
}

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 992px) {
  .article-container {
    grid-template-columns: 1fr;
  }
  
  .about-content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 70px;
    right: -100%;
    flex-direction: column;
    background-color: var(--white);
    width: 250px;
    height: calc(100vh - 70px);
    padding: 30px;
    box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
    transition: right 0.3s ease;
  }
  
  .nav-links.active {
    right: 0;
  }
  
  .hamburger {
    display: block;
  }
  
  .hero h1 {
    font-size: 2.2rem;
  }
  
  .cta-buttons {
    flex-direction: column;
    width: 100%;
    max-width: 300px;
  }
  
  .section-title {
    font-size: 1.8rem;
  }
  
  .article-title {
    font-size: 1.8rem;
  }
}

@media (max-width: 576px) {
  .hero {
    padding: 60px 0;
  }
  
  .hero h1 {
    font-size: 1.8rem;
  }
  
  .section {
    padding: 40px 0;
  }
  
  .card-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .footer-title::after {
    left: 50%;
    transform: translateX(-50%);
  }
  
  .social-links {
    justify-content: center;
  }
}