/* WPS智能办公软件 - 主样式表 */
:root {
  --primary: #d14424;
  --primary-dark: #b83a1e;
  --secondary: #2c5aa0;
  --text-dark: #1a1a1a;
  --text-gray: #666;
  --bg-light: #f8f9fa;
  --border: #e0e0e0;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  overflow-x: hidden;
}

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

/* Header */
header {
  background: #fff;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
}

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

.logo-area img {
  height: 42px;
}

.logo-text {
  font-size: 20px;
  font-weight: 600;
  color: var(--primary);
}

nav ul {
  display: flex;
  list-style: none;
  gap: 32px;
}

nav a {
  text-decoration: none;
  color: var(--text-dark);
  font-size: 16px;
  font-weight: 500;
  transition: color 0.3s;
}

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

.download-btn {
  background: var(--primary);
  color: #fff;
  padding: 10px 24px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 500;
  transition: background 0.3s;
}

.download-btn:hover {
  background: var(--primary-dark);
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff;
  padding: 80px 0;
  text-align: center;
}

.hero h1 {
  font-size: 48px;
  margin-bottom: 20px;
  font-weight: 700;
}

.hero p {
  font-size: 20px;
  margin-bottom: 32px;
  opacity: 0.95;
}

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

.btn-primary,
.btn-secondary {
  padding: 14px 32px;
  border-radius: 8px;
  text-decoration: none;
  font-size: 16px;
  font-weight: 500;
  transition: all 0.3s;
  display: inline-block;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(0,0,0,0.2);
}

.btn-secondary {
  background: rgba(255,255,255,0.2);
  color: #fff;
  border: 2px solid #fff;
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.3);
}

/* Features Grid */
.features-section {
  padding: 80px 0;
  background: #fff;
}

.section-title {
  text-align: center;
  font-size: 36px;
  margin-bottom: 48px;
  color: var(--text-dark);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

.feature-card {
  padding: 32px;
  border-radius: 12px;
  background: var(--bg-light);
  transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0,0,0,0.1);
}

.feature-icon {
  font-size: 48px;
  margin-bottom: 16px;
  color: var(--primary);
}

.feature-card h3 {
  font-size: 22px;
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--text-gray);
  line-height: 1.7;
}

/* News Section */
.news-section {
  padding: 80px 0;
  background: var(--bg-light);
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 28px;
}

.news-card {
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  transition: transform 0.3s;
  text-decoration: none;
  color: inherit;
  display: block;
}

.news-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.12);
}

.news-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.news-content {
  padding: 24px;
}

.news-date {
  color: var(--text-gray);
  font-size: 14px;
  margin-bottom: 8px;
}

.news-card h3 {
  font-size: 20px;
  margin-bottom: 12px;
  line-height: 1.4;
}

.news-card p {
  color: var(--text-gray);
  font-size: 15px;
}

/* Footer */
footer {
  background: #2d3748;
  color: #fff;
  padding: 48px 0 24px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
  margin-bottom: 32px;
}

.footer-section h4 {
  margin-bottom: 16px;
  font-size: 18px;
}

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

.footer-section a {
  color: #cbd5e0;
  text-decoration: none;
  display: block;
  margin-bottom: 8px;
  transition: color 0.3s;
}

.footer-section a:hover {
  color: #fff;
}

.footer-bottom {
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
  color: #cbd5e0;
}

/* Responsive */
@media (max-width: 768px) {
  nav ul {
    gap: 16px;
    font-size: 14px;
  }

  .hero h1 {
    font-size: 32px;
  }

  .hero p {
    font-size: 16px;
  }

  .section-title {
    font-size: 28px;
  }
}