/* =============================================
   紫鸟浏览器电脑版 - 主样式文件
   ZiNiao Browser PC - Main Stylesheet
   ============================================= */

/* ---- Reset & Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", Arial, sans-serif;
  color: #333;
  background: #fff;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color .2s; }
a:hover { color: #7c3aed; }
ul, ol { list-style: none; }

/* ---- CSS Variables ---- */
:root {
  --primary: #6d28d9;
  --primary-dark: #4c1d95;
  --primary-light: #8b5cf6;
  --accent: #f59e0b;
  --accent-dark: #d97706;
  --text-dark: #1e1b4b;
  --text-mid: #374151;
  --text-light: #6b7280;
  --bg-dark: #0f0a2e;
  --bg-section: #f8f7ff;
  --border: #e5e7eb;
  --radius: 10px;
  --shadow: 0 4px 24px rgba(109,40,217,.12);
  --shadow-lg: 0 8px 40px rgba(109,40,217,.18);
  --container: 1200px;
}

/* ---- Container ---- */
.container { max-width: var(--container); margin: 0 auto; padding: 0 20px; }
.section { padding: 72px 0; }
.section-sm { padding: 48px 0; }

/* ---- Typography ---- */
.section-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-dark);
  text-align: center;
  margin-bottom: 12px;
}
.section-subtitle {
  font-size: 1rem;
  color: var(--text-light);
  text-align: center;
  margin-bottom: 48px;
}
.section-en {
  font-size: .75rem;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--primary-light);
  text-align: center;
  margin-bottom: 6px;
  font-weight: 600;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 6px;
  font-size: .95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all .2s;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 4px 14px rgba(109,40,217,.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(109,40,217,.45); color: #fff; }
.btn-accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff;
  box-shadow: 0 4px 14px rgba(245,158,11,.35);
}
.btn-accent:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(245,158,11,.45); color: #fff; }
.btn-outline {
  background: transparent;
  border: 2px solid var(--primary);
  color: var(--primary);
}
.btn-outline:hover { background: var(--primary); color: #fff; }
.btn-lg { padding: 15px 36px; font-size: 1.05rem; }
.btn-sm { padding: 8px 18px; font-size: .85rem; }

/* ---- Header / Navbar ---- */
#header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(0,0,0,.06);
}
.navbar {
  display: flex;
  align-items: center;
  height: 64px;
  gap: 0;
}
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-right: 40px;
  flex-shrink: 0;
}
.navbar-brand img { height: 36px; width: auto; }
.navbar-brand .brand-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary-dark);
  white-space: nowrap;
}
.navbar-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}
.nav-item { position: relative; }
.nav-link {
  display: block;
  padding: 8px 14px;
  font-size: .9rem;
  font-weight: 500;
  color: var(--text-mid);
  border-radius: 6px;
  white-space: nowrap;
  transition: all .2s;
}
.nav-link:hover, .nav-link.active { color: var(--primary); background: rgba(109,40,217,.06); }
.nav-item:hover .dropdown { display: block; }
.dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 8px 0;
  z-index: 999;
}
.dropdown a {
  display: block;
  padding: 9px 18px;
  font-size: .875rem;
  color: var(--text-mid);
}
.dropdown a:hover { background: var(--bg-section); color: var(--primary); }
.navbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  flex-shrink: 0;
}
.navbar-actions .phone { font-size: .85rem; color: var(--text-light); }

/* ---- Announcement Bar ---- */
.announce-bar {
  background: linear-gradient(90deg, var(--primary-dark), var(--primary));
  color: #fff;
  text-align: center;
  padding: 8px 20px;
  font-size: .85rem;
}
.announce-bar a { color: #fde68a; font-weight: 600; }

/* ---- Hero Slider ---- */
.hero-slider { position: relative; overflow: hidden; background: var(--bg-dark); }
.slider-track { display: flex; transition: transform .6s cubic-bezier(.4,0,.2,1); }
.slide {
  min-width: 100%;
  position: relative;
  height: 520px;
  overflow: hidden;
}
.slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.slide-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(15,10,46,.65) 0%, rgba(15,10,46,.15) 60%, transparent 100%);
  display: flex;
  align-items: center;
}
.slide-content {
  padding: 0 80px;
  max-width: 600px;
  color: #fff;
}
.slide-content h1, .slide-content h2 {
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 16px;
  text-shadow: 0 2px 8px rgba(0,0,0,.3);
}
.slide-content p {
  font-size: 1.05rem;
  opacity: .9;
  margin-bottom: 28px;
  line-height: 1.7;
}
.slider-controls {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 10;
}
.slider-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,.45);
  cursor: pointer;
  transition: all .3s;
  border: none;
}
.slider-dot.active { background: #fff; width: 28px; border-radius: 5px; }
.slider-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  background: rgba(255,255,255,.18);
  border: none;
  color: #fff;
  width: 44px; height: 44px;
  border-radius: 50%;
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .2s;
  backdrop-filter: blur(4px);
}
.slider-arrow:hover { background: rgba(255,255,255,.32); }
.slider-arrow.prev { left: 24px; }
.slider-arrow.next { right: 24px; }

/* ---- Stats Bar ---- */
.stats-bar {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
  padding: 28px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  text-align: center;
}
.stat-item { padding: 0 20px; border-right: 1px solid rgba(255,255,255,.2); }
.stat-item:last-child { border-right: none; }
.stat-num { font-size: 2rem; font-weight: 800; line-height: 1.2; }
.stat-label { font-size: .85rem; opacity: .85; margin-top: 4px; }

/* ---- Features Grid ---- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.feature-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 32px 28px;
  transition: all .3s;
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  transform: scaleX(0);
  transition: transform .3s;
}
.feature-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); border-color: transparent; }
.feature-card:hover::before { transform: scaleX(1); }
.feature-icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: #fff;
  margin-bottom: 20px;
}
.feature-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 10px;
}
.feature-card p { font-size: .9rem; color: var(--text-light); line-height: 1.7; }
.feature-img-wrap { margin-top: 20px; border-radius: 8px; overflow: hidden; }
.feature-img-wrap img { width: 100%; height: 160px; object-fit: cover; }

/* ---- Why Choose Section ---- */
.why-section { background: var(--bg-section); }
.why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.why-list { display: flex; flex-direction: column; gap: 20px; }
.why-item {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: #fff;
  border-radius: 12px;
  border: 1px solid var(--border);
  transition: all .3s;
}
.why-item:hover { box-shadow: var(--shadow); border-color: var(--primary-light); }
.why-item-icon {
  width: 44px; height: 44px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.2rem;
  flex-shrink: 0;
}
.why-item-body h4 { font-size: 1rem; font-weight: 700; color: var(--text-dark); margin-bottom: 4px; }
.why-item-body p { font-size: .875rem; color: var(--text-light); }
.why-img { border-radius: 16px; overflow: hidden; box-shadow: var(--shadow-lg); }
.why-img img { width: 100%; height: 400px; object-fit: cover; }

/* ---- Platform Support ---- */
.platform-section { background: #fff; }
.platform-grid {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}
.platform-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 24px 28px;
  border: 1px solid var(--border);
  border-radius: 12px;
  min-width: 110px;
  transition: all .3s;
  cursor: pointer;
}
.platform-item:hover { border-color: var(--primary); box-shadow: var(--shadow); transform: translateY(-3px); }
.platform-item i { font-size: 2rem; color: var(--primary); }
.platform-item span { font-size: .875rem; font-weight: 600; color: var(--text-mid); }

/* ---- Article List ---- */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.article-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: all .3s;
}
.article-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); border-color: transparent; }
.article-thumb { position: relative; overflow: hidden; height: 190px; }
.article-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.article-card:hover .article-thumb img { transform: scale(1.05); }
.article-cat {
  position: absolute;
  top: 12px; left: 12px;
  background: var(--primary);
  color: #fff;
  font-size: .75rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 20px;
}
.article-body { padding: 20px; }
.article-body h3 {
  font-size: .975rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-body h3 a:hover { color: var(--primary); }
.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: .8rem;
  color: var(--text-light);
  margin-top: 12px;
}
.article-meta span { display: flex; align-items: center; gap: 4px; }
.article-excerpt {
  font-size: .875rem;
  color: var(--text-light);
  line-height: 1.65;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ---- Testimonials ---- */
.testimonials-section { background: var(--bg-section); }
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.testimonial-card {
  background: #fff;
  border-radius: 14px;
  padding: 28px;
  border: 1px solid var(--border);
  position: relative;
  transition: all .3s;
}
.testimonial-card:hover { box-shadow: var(--shadow); }
.testimonial-card::before {
  content: '"';
  position: absolute;
  top: 16px; right: 20px;
  font-size: 4rem;
  color: var(--primary-light);
  opacity: .2;
  font-family: Georgia, serif;
  line-height: 1;
}
.testimonial-stars { color: var(--accent); margin-bottom: 12px; font-size: .9rem; }
.testimonial-text { font-size: .9rem; color: var(--text-mid); line-height: 1.7; margin-bottom: 16px; }
.testimonial-author { display: flex; align-items: center; gap: 12px; }
.testimonial-avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: .9rem;
}
.testimonial-info .name { font-size: .9rem; font-weight: 700; color: var(--text-dark); }
.testimonial-info .role { font-size: .8rem; color: var(--text-light); }

/* ---- CTA Section ---- */
.cta-section {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, #7c3aed 100%);
  color: #fff;
  text-align: center;
  padding: 80px 20px;
}
.cta-section h2 { font-size: 2.2rem; font-weight: 800; margin-bottom: 16px; }
.cta-section p { font-size: 1.05rem; opacity: .9; margin-bottom: 36px; max-width: 560px; margin-left: auto; margin-right: auto; }
.cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ---- Footer ---- */
#footer {
  background: #0f0a2e;
  color: rgba(255,255,255,.75);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-brand .brand-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-brand .brand-logo img { height: 32px; filter: brightness(0) invert(1); }
.footer-brand .brand-logo span { font-size: 1.1rem; font-weight: 700; color: #fff; }
.footer-brand p { font-size: .875rem; line-height: 1.8; margin-bottom: 20px; }
.footer-social { display: flex; gap: 10px; }
.footer-social a {
  width: 36px; height: 36px;
  border-radius: 8px;
  background: rgba(255,255,255,.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,.75);
  transition: all .2s;
}
.footer-social a:hover { background: var(--primary); color: #fff; }
.footer-col h4 { font-size: .95rem; font-weight: 700; color: #fff; margin-bottom: 16px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: .85rem; color: rgba(255,255,255,.65); transition: color .2s; }
.footer-col ul li a:hover { color: var(--primary-light); }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  font-size: .8rem;
  color: rgba(255,255,255,.45);
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom a { color: rgba(255,255,255,.55); }
.footer-bottom a:hover { color: var(--primary-light); }

/* ---- Breadcrumb ---- */
.breadcrumb {
  background: var(--bg-section);
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}
.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .85rem;
  color: var(--text-light);
}
.breadcrumb-list a { color: var(--text-light); }
.breadcrumb-list a:hover { color: var(--primary); }
.breadcrumb-list .sep { color: var(--border); }
.breadcrumb-list .current { color: var(--text-dark); font-weight: 500; }

/* ---- Page Hero ---- */
.page-hero {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
  padding: 56px 0;
  text-align: center;
}
.page-hero h1 { font-size: 2rem; font-weight: 800; margin-bottom: 10px; }
.page-hero p { font-size: 1rem; opacity: .85; }

/* ---- List Page ---- */
.list-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 32px;
  padding: 48px 0;
}
.list-main {}
.list-articles { display: flex; flex-direction: column; gap: 24px; }
.list-article-card {
  display: flex;
  gap: 20px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: all .3s;
}
.list-article-card:hover { box-shadow: var(--shadow); border-color: var(--primary-light); }
.list-article-thumb { flex-shrink: 0; width: 220px; height: 150px; overflow: hidden; }
.list-article-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.list-article-card:hover .list-article-thumb img { transform: scale(1.05); }
.list-article-body { padding: 20px 20px 20px 0; flex: 1; }
.list-article-body h2 { font-size: 1.05rem; font-weight: 700; color: var(--text-dark); margin-bottom: 8px; line-height: 1.5; }
.list-article-body h2 a:hover { color: var(--primary); }
.list-article-excerpt { font-size: .875rem; color: var(--text-light); line-height: 1.65; margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.list-article-meta { display: flex; gap: 12px; font-size: .8rem; color: var(--text-light); }
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 36px;
}
.pagination a, .pagination span {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px; height: 38px;
  border-radius: 8px;
  font-size: .9rem;
  font-weight: 500;
  border: 1px solid var(--border);
  color: var(--text-mid);
  transition: all .2s;
}
.pagination a:hover, .pagination .active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ---- Sidebar ---- */
.sidebar { display: flex; flex-direction: column; gap: 24px; }
.sidebar-widget {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}
.sidebar-widget-title {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
  padding: 14px 20px;
  font-size: .95rem;
  font-weight: 700;
}
.sidebar-widget-body { padding: 16px 20px; }
.sidebar-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: .875rem;
}
.sidebar-list li:last-child { border-bottom: none; }
.sidebar-list li a { color: var(--text-mid); display: flex; justify-content: space-between; align-items: center; }
.sidebar-list li a:hover { color: var(--primary); }
.sidebar-list .num {
  background: var(--bg-section);
  color: var(--text-light);
  font-size: .75rem;
  padding: 2px 8px;
  border-radius: 10px;
}
.sidebar-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.sidebar-tags a {
  background: var(--bg-section);
  color: var(--text-mid);
  font-size: .8rem;
  padding: 5px 12px;
  border-radius: 20px;
  border: 1px solid var(--border);
  transition: all .2s;
}
.sidebar-tags a:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ---- Show Page (Article) ---- */
.show-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 32px;
  padding: 48px 0;
}
.article-header { margin-bottom: 28px; }
.article-header h1 { font-size: 1.75rem; font-weight: 800; color: var(--text-dark); line-height: 1.4; margin-bottom: 14px; }
.article-header-meta { display: flex; gap: 16px; font-size: .85rem; color: var(--text-light); flex-wrap: wrap; }
.article-header-meta span { display: flex; align-items: center; gap: 5px; }
.article-cover { border-radius: 12px; overflow: hidden; margin-bottom: 28px; }
.article-cover img { width: 100%; max-height: 420px; object-fit: cover; }
.article-content {
  font-size: .975rem;
  color: var(--text-mid);
  line-height: 1.85;
}
.article-content h2 { font-size: 1.35rem; font-weight: 700; color: var(--text-dark); margin: 28px 0 14px; }
.article-content h3 { font-size: 1.1rem; font-weight: 700; color: var(--text-dark); margin: 22px 0 10px; }
.article-content p { margin-bottom: 16px; }
.article-content ul, .article-content ol { padding-left: 24px; margin-bottom: 16px; }
.article-content li { margin-bottom: 8px; list-style: disc; }
.article-content img { border-radius: 8px; margin: 16px 0; }
.article-content blockquote {
  border-left: 4px solid var(--primary);
  padding: 12px 20px;
  background: var(--bg-section);
  border-radius: 0 8px 8px 0;
  margin: 20px 0;
  font-style: italic;
  color: var(--text-mid);
}
.article-tags { margin-top: 28px; display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.article-tags .label { font-size: .85rem; color: var(--text-light); font-weight: 600; }
.article-tags a {
  background: var(--bg-section);
  color: var(--text-mid);
  font-size: .8rem;
  padding: 4px 12px;
  border-radius: 20px;
  border: 1px solid var(--border);
  transition: all .2s;
}
.article-tags a:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.related-articles { margin-top: 40px; }
.related-articles h3 { font-size: 1.1rem; font-weight: 700; color: var(--text-dark); margin-bottom: 16px; padding-bottom: 10px; border-bottom: 2px solid var(--primary); }
.related-list { display: flex; flex-direction: column; gap: 12px; }
.related-item { display: flex; gap: 12px; align-items: flex-start; }
.related-item img { width: 80px; height: 56px; object-fit: cover; border-radius: 6px; flex-shrink: 0; }
.related-item-body a { font-size: .875rem; color: var(--text-dark); font-weight: 500; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-item-body a:hover { color: var(--primary); }
.related-item-body .date { font-size: .78rem; color: var(--text-light); margin-top: 4px; }

/* ---- Download Page ---- */
.download-hero {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
  padding: 72px 0;
  text-align: center;
}
.download-hero h1 { font-size: 2.4rem; font-weight: 800; margin-bottom: 14px; }
.download-hero p { font-size: 1.05rem; opacity: .9; margin-bottom: 40px; }
.download-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  max-width: 800px;
  margin: 0 auto;
}
.download-card {
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.25);
  border-radius: 16px;
  padding: 36px 28px;
  text-align: center;
  backdrop-filter: blur(8px);
  transition: all .3s;
}
.download-card:hover { background: rgba(255,255,255,.2); transform: translateY(-4px); }
.download-card-icon { font-size: 3rem; margin-bottom: 16px; }
.download-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 8px; }
.download-card p { font-size: .875rem; opacity: .85; margin-bottom: 24px; }
.download-card .version { font-size: .8rem; opacity: .7; margin-top: 12px; }
.download-features {
  background: var(--bg-section);
  padding: 72px 0;
}
.download-features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.dl-feature-item {
  text-align: center;
  padding: 28px 20px;
}
.dl-feature-item .icon {
  width: 60px; height: 60px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: #fff;
  margin: 0 auto 16px;
}
.dl-feature-item h4 { font-size: 1rem; font-weight: 700; color: var(--text-dark); margin-bottom: 8px; }
.dl-feature-item p { font-size: .875rem; color: var(--text-light); }
.install-steps { padding: 72px 0; }
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}
.steps-grid::before {
  content: '';
  position: absolute;
  top: 36px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  z-index: 0;
}
.step-item { text-align: center; position: relative; z-index: 1; }
.step-num {
  width: 72px; height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
  font-size: 1.5rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  box-shadow: 0 4px 16px rgba(109,40,217,.35);
}
.step-item h4 { font-size: .975rem; font-weight: 700; color: var(--text-dark); margin-bottom: 8px; }
.step-item p { font-size: .85rem; color: var(--text-light); }

/* ---- FAQ ---- */
.faq-section { background: var(--bg-section); padding: 72px 0; }
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 22px;
  cursor: pointer;
  font-size: .975rem;
  font-weight: 600;
  color: var(--text-dark);
  transition: background .2s;
}
.faq-question:hover { background: var(--bg-section); }
.faq-question .icon { color: var(--primary); font-size: 1.1rem; transition: transform .3s; }
.faq-answer {
  padding: 0 22px;
  font-size: .9rem;
  color: var(--text-light);
  line-height: 1.75;
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease, padding .3s;
}
.faq-item.open .faq-answer { max-height: 300px; padding: 0 22px 18px; }
.faq-item.open .faq-question .icon { transform: rotate(45deg); }

/* ---- Utilities ---- */
.text-center { text-align: center; }
.text-primary { color: var(--primary); }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.view-more {
  display: flex;
  justify-content: center;
  margin-top: 36px;
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .download-features-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid::before { display: none; }
}
@media (max-width: 768px) {
  .slide { height: 380px; }
  .slide-content { padding: 0 32px; }
  .slide-content h1, .slide-content h2 { font-size: 1.6rem; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .stat-item { border-right: none; }
  .features-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .why-img { display: none; }
  .articles-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .list-layout, .show-layout { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .download-cards { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .navbar-nav { display: none; }
  .section-title { font-size: 1.5rem; }
}