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

body {
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: linear-gradient(135deg, #f5f7fa 0%, #e4edf9 100%);
  color: #333;
  line-height: 1.6;
}

a {
  color: inherit;
}

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

header {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  padding: 1rem 2rem;
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.8rem;
  font-weight: bold;
  color: #2c3e50;
  display: flex;
  align-items: center;
  text-decoration: none;
}

.logo img {
  height: 40px;
  margin-right: 10px;
}

nav ul {
  display: flex;
  list-style: none;
  align-items: center;
}

nav ul li {
  margin-left: 1.5rem;
}

nav ul li a {
  text-decoration: none;
  color: #2c3e50;
  font-weight: 500;
  transition: color 0.3s;
}

nav ul li a:hover,
nav ul li a.active {
  color: #3498db;
}

.nav-cta {
  display: inline-block;
  background: linear-gradient(45deg, #3498db, #2ecc71);
  color: #fff !important;
  padding: 8px 18px;
  border-radius: 50px;
  font-size: 0.95rem;
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 28px;
  height: 22px;
  flex-direction: column;
  justify-content: space-between;
  padding: 0;
}

.mobile-menu-toggle span {
  display: block;
  height: 3px;
  background: #2c3e50;
  border-radius: 2px;
}

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 100px 10% 60px;
  gap: 40px;
}

.hero-content {
  flex: 1;
  animation: fadeInLeft 1s ease-out;
}

.hero-image {
  flex: 1;
  display: flex;
  justify-content: center;
  animation: fadeInRight 1s ease-out;
}

.hero h1 {
  font-size: 3.2rem;
  color: #2c3e50;
  margin-bottom: 1rem;
  background: linear-gradient(45deg, #3498db, #2ecc71);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.15rem;
  color: #7f8c8d;
  margin-bottom: 2rem;
  max-width: 600px;
}

.btn-download {
  display: inline-block;
  background: linear-gradient(45deg, #3498db, #2ecc71);
  color: white;
  padding: 15px 30px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: bold;
  transition: transform 0.3s, box-shadow 0.3s;
  box-shadow: 0 5px 15px rgba(52, 152, 219, 0.4);
}

.btn-download:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(52, 152, 219, 0.6);
}

.btn-outline {
  display: inline-block;
  margin-left: 12px;
  padding: 14px 28px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  color: #3498db;
  border: 2px solid #3498db;
  background: #fff;
  transition: all 0.3s;
}

.btn-outline:hover {
  background: #3498db;
  color: #fff;
}

.section {
  padding: 80px 10%;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  color: #2c3e50;
  margin-bottom: 3rem;
  position: relative;
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: -15px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: linear-gradient(45deg, #3498db, #2ecc71);
  border-radius: 2px;
}

.section-desc {
  text-align: center;
  color: #7f8c8d;
  max-width: 720px;
  margin: -1.5rem auto 2.5rem;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.feature-card {
  background: white;
  border-radius: 15px;
  padding: 30px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s, box-shadow 0.3s;
  text-align: center;
}

.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: 20px;
  color: #3498db;
}

.feature-card h3 {
  font-size: 1.5rem;
  color: #2c3e50;
  margin-bottom: 15px;
}

.feature-card p {
  color: #7f8c8d;
}

.testimonials {
  background: linear-gradient(135deg, #e4edf9 0%, #f5f7fa 100%);
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.testimonial-card {
  background: white;
  border-radius: 15px;
  padding: 30px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.testimonial-text {
  font-style: italic;
  color: #7f8c8d;
  margin-bottom: 20px;
}

.testimonial-author {
  display: flex;
  align-items: center;
}

.author-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: #3498db;
  margin-right: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
}

.pricing {
  background: white;
}

.pricing-plans {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.pricing-card {
  background: white;
  border-radius: 15px;
  padding: 40px 30px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  text-align: center;
  border: 2px solid #f0f4f8;
  transition: transform 0.3s, border-color 0.3s;
}

.pricing-card.popular {
  border-color: #3498db;
  transform: scale(1.03);
}

.pricing-card:hover {
  transform: translateY(-10px);
}

.pricing-name {
  font-size: 1.8rem;
  color: #2c3e50;
  margin-bottom: 10px;
}

.pricing-price {
  font-size: 2.5rem;
  color: #3498db;
  font-weight: bold;
  margin-bottom: 20px;
}

.pricing-price span {
  font-size: 1rem;
  color: #7f8c8d;
}

.pricing-features {
  list-style: none;
  margin-bottom: 30px;
}

.pricing-features li {
  padding: 8px 0;
  color: #7f8c8d;
  border-bottom: 1px solid #eee;
}

.faq {
  background: linear-gradient(135deg, #e4edf9 0%, #f5f7fa 100%);
}

.faq-container {
  max-width: 800px;
  margin: 50px auto 0;
}

.faq-item {
  background: white;
  border-radius: 10px;
  margin-bottom: 15px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.faq-question {
  padding: 20px;
  background: #f8f9fa;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: bold;
  color: #2c3e50;
  width: 100%;
  border: none;
  text-align: left;
  font-size: 1rem;
  font-family: inherit;
}

.faq-answer {
  padding: 0 20px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  color: #7f8c8d;
}

.faq-item.active .faq-answer {
  padding: 20px;
  max-height: 600px;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.news-card {
  background: #fff;
  border-radius: 15px;
  padding: 28px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.news-cover {
  display: inline-block;
  background: linear-gradient(45deg, #3498db, #2ecc71);
  color: #fff;
  font-size: 0.85rem;
  padding: 4px 12px;
  border-radius: 20px;
  width: fit-content;
}

.news-card h3 {
  font-size: 1.25rem;
  color: #2c3e50;
}

.news-card h3 a {
  text-decoration: none;
  color: inherit;
}

.news-card h3 a:hover {
  color: #3498db;
}

.news-card p {
  color: #7f8c8d;
  flex: 1;
}

.news-meta {
  font-size: 0.85rem;
  color: #95a5a6;
}

.read-more {
  color: #3498db;
  text-decoration: none;
  font-weight: 600;
}

.read-more:hover {
  text-decoration: underline;
}

.daily-spotlight {
  background: #fff;
  border-radius: 15px;
  padding: 28px;
  margin-top: 30px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  border-left: 4px solid #3498db;
}

.daily-label {
  display: inline-block;
  font-size: 0.85rem;
  color: #3498db;
  font-weight: 600;
  margin-bottom: 10px;
}

.page-hero {
  margin-top: 80px;
  padding: 60px 10% 40px;
  text-align: center;
  background: linear-gradient(rgba(255, 255, 255, 0.85), rgba(255, 255, 255, 0.85)),
    url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><rect width="100" height="100" fill="%233498db" opacity="0.08"/></svg>');
}

.page-hero h1 {
  font-size: 2.4rem;
  color: #2c3e50;
  margin-bottom: 12px;
}

.page-hero p {
  color: #7f8c8d;
  max-width: 640px;
  margin: 0 auto;
}

.breadcrumb {
  font-size: 0.9rem;
  color: #95a5a6;
  margin-bottom: 16px;
}

.breadcrumb a {
  color: #3498db;
  text-decoration: none;
}

.platforms {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.platform-card {
  background: white;
  border-radius: 15px;
  padding: 30px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s;
}

.platform-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.platform-icon {
  font-size: 3.5rem;
  margin-bottom: 16px;
}

.platform-card h3 {
  font-size: 1.6rem;
  color: #2c3e50;
  margin-bottom: 12px;
}

.platform-card p {
  color: #7f8c8d;
  margin-bottom: 20px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  margin-top: 30px;
}

.step {
  background: white;
  padding: 25px;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.step-number {
  display: inline-block;
  width: 40px;
  height: 40px;
  background: #3498db;
  color: white;
  border-radius: 50%;
  text-align: center;
  line-height: 40px;
  font-weight: bold;
  margin-bottom: 15px;
}

.step h4 {
  font-size: 1.2rem;
  color: #2c3e50;
  margin-bottom: 10px;
}

.step p {
  color: #7f8c8d;
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 40px;
  padding: 40px 10% 80px;
  max-width: 1200px;
  margin: 0 auto;
}

.article-main {
  background: #fff;
  border-radius: 15px;
  padding: 40px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.daily-stamp {
  font-size: 0.85rem;
  color: #3498db;
  margin-bottom: 12px;
}

.article-main h1 {
  font-size: 1.9rem;
  color: #2c3e50;
  margin-bottom: 12px;
}

.article-info {
  font-size: 0.9rem;
  color: #95a5a6;
  margin-bottom: 28px;
}

.article-content h2 {
  font-size: 1.35rem;
  color: #2c3e50;
  margin: 28px 0 12px;
}

.article-content p,
.article-content li {
  color: #555;
  margin-bottom: 14px;
}

.article-content ul {
  padding-left: 1.4rem;
  margin-bottom: 16px;
}

.article-content a {
  color: #3498db;
}

.sidebar .side-box {
  background: #fff;
  border-radius: 12px;
  padding: 22px;
  margin-bottom: 20px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.05);
}

.sidebar h3 {
  font-size: 1.1rem;
  color: #2c3e50;
  margin-bottom: 14px;
}

.sidebar a {
  display: block;
  color: #3498db;
  text-decoration: none;
  margin-bottom: 10px;
  font-size: 0.95rem;
}

.sidebar a:hover {
  text-decoration: underline;
}

.sitemap-list {
  background: #fff;
  border-radius: 15px;
  padding: 40px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  max-width: 800px;
  margin: 0 auto;
}

.sitemap-list h2 {
  color: #2c3e50;
  margin: 24px 0 12px;
  font-size: 1.3rem;
}

.sitemap-list ul {
  list-style: none;
}

.sitemap-list li {
  margin-bottom: 10px;
}

.sitemap-list a {
  color: #3498db;
  text-decoration: none;
}

.sitemap-list a:hover {
  text-decoration: underline;
}

footer {
  background: #2c3e50;
  color: white;
  padding: 50px 10% 20px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 30px;
  margin-bottom: 30px;
}

.footer-section h3 {
  font-size: 1.2rem;
  margin-bottom: 18px;
  color: #3498db;
}

.footer-section p {
  color: #bdc3c7;
  font-size: 0.95rem;
}

.footer-section ul {
  list-style: none;
}

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

.footer-section ul li a {
  color: #bdc3c7;
  text-decoration: none;
  transition: color 0.3s;
}

.footer-section ul li a:hover {
  color: #3498db;
}

.copyright {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid #34495e;
  color: #bdc3c7;
  font-size: 0.9rem;
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@media (max-width: 900px) {
  .article-layout {
    grid-template-columns: 1fr;
    padding: 30px 5% 60px;
  }

  .hero {
    flex-direction: column;
    text-align: center;
    padding: 110px 5% 50px;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .hero p {
    margin-left: auto;
    margin-right: auto;
  }

  .btn-outline {
    margin-left: 0;
    margin-top: 12px;
  }

  .section {
    padding: 50px 5%;
  }

  .section-title {
    font-size: 2rem;
  }

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

  nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
    padding: 16px 24px 24px;
  }

  nav.open {
    display: block;
  }

  nav ul {
    flex-direction: column;
    align-items: flex-start;
  }

  nav ul li {
    margin: 10px 0;
  }

  .pricing-card.popular {
    transform: none;
  }
}