/* =============================================
   搜狗输入法下载官网 - 深色科技风格模板 V2
   全站 CSS 样式
   ============================================= */

/* ---- CSS 变量 ---- */
:root {
  --primary: #FF6B00;
  --primary-hover: #FF8C2A;
  --primary-light: rgba(255, 107, 0, 0.12);
  --accent-blue: #00BFFF;
  --accent-green: #00E676;
  --accent-purple: #B388FF;
  --accent-cyan: #18FFFF;
  --accent-red: #FF5252;
  --bg-dark: #0A0E1A;
  --bg-card: #111827;
  --bg-card-hover: #1A2236;
  --bg-surface: #161D2E;
  --border: rgba(255,255,255,0.08);
  --border-hover: rgba(255,255,255,0.18);
  --text-primary: #F0F4FF;
  --text-secondary: #8B9BB4;
  --text-muted: #5A6A84;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-card: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-glow-orange: 0 0 40px rgba(255,107,0,0.25);
  --shadow-glow-blue: 0 0 40px rgba(0,191,255,0.2);
  --shadow-glow-green: 0 0 40px rgba(0,230,118,0.2);
  --shadow-glow-purple: 0 0 40px rgba(179,136,255,0.2);
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
  --font: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
}

/* ---- 全局重置 ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font);
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; transition: color var(--transition); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: var(--font); }
details summary { cursor: pointer; list-style: none; }
details summary::-webkit-details-marker { display: none; }

/* ---- 容器 ---- */
.container { max-width: 1240px; margin: 0 auto; padding: 0 24px; }

/* ---- 顶部公告栏 ---- */
.topbar {
  background: linear-gradient(90deg, #1A0A00 0%, #2A1200 50%, #1A0A00 100%);
  border-bottom: 1px solid rgba(255,107,0,0.2);
  padding: 8px 0;
  font-size: 13px;
}
.topbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.topbar-text {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
}
.topbar-text svg { color: var(--primary); flex-shrink: 0; }
.topbar-btn {
  color: var(--primary);
  font-weight: 600;
  white-space: nowrap;
  transition: color var(--transition);
}
.topbar-btn:hover { color: var(--primary-hover); }
.topbar-current { color: var(--text-muted); font-size: 12px; }

/* ---- 主导航 ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 14, 26, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}
.site-header:hover { box-shadow: 0 4px 32px rgba(0,0,0,0.5); }
.header-inner {
  display: flex;
  align-items: center;
  gap: 32px;
  height: 68px;
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  text-decoration: none;
}
.site-logo img { border-radius: 8px; }
.logo-text {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
  letter-spacing: -0.3px;
}
.logo-text em {
  font-style: normal;
  color: var(--primary);
  font-size: 13px;
  font-weight: 500;
  display: block;
  line-height: 1.2;
  margin-top: -2px;
}

/* 主导航菜单 */
.main-nav { flex: 1; }
.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-item { position: relative; }
.nav-item > a {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  color: var(--text-secondary);
  font-weight: 500;
  transition: all var(--transition);
  white-space: nowrap;
}
.nav-item > a:hover,
.nav-item.active > a {
  color: var(--text-primary);
  background: var(--primary-light);
}
.nav-item.active > a { color: var(--primary); }

/* 下拉菜单 */
.dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 180px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 8px;
  box-shadow: var(--shadow-card);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition);
  z-index: 100;
}
.nav-item.has-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.dropdown-menu li a {
  display: block;
  padding: 9px 14px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text-secondary);
  transition: all var(--transition);
}
.dropdown-menu li a:hover {
  color: var(--primary);
  background: var(--primary-light);
}

/* 右侧操作区 */
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  margin-left: auto;
}
.btn-header-download {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 9px 20px;
  background: var(--primary);
  color: #fff;
  border-radius: 100px;
  font-size: 14px;
  font-weight: 600;
  transition: all var(--transition);
  box-shadow: 0 0 20px rgba(255,107,0,0.3);
}
.btn-header-download:hover {
  background: var(--primary-hover);
  box-shadow: 0 0 30px rgba(255,107,0,0.5);
  transform: translateY(-1px);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: var(--radius-sm);
}
.mobile-menu-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ---- 面包屑 ---- */
.breadcrumb {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}
.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-muted);
}
.breadcrumb-list a { color: var(--text-muted); transition: color var(--transition); }
.breadcrumb-list a:hover { color: var(--primary); }
.breadcrumb-list .active { color: var(--text-secondary); }
.breadcrumb-sep { display: flex; align-items: center; color: var(--text-muted); }

/* ---- Section 通用 ---- */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--primary);
  background: var(--primary-light);
  border: 1px solid rgba(255,107,0,0.2);
  padding: 4px 14px;
  border-radius: 100px;
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(24px, 3.5vw, 36px);
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.5px;
  margin-bottom: 12px;
  line-height: 1.25;
}
.section-subtitle {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
}
.section-more-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--primary);
  font-weight: 600;
  margin-top: 8px;
  transition: gap var(--transition);
}
.section-more-link:hover { gap: 10px; }

/* ---- Hero 轮播 ---- */
.hero-section { position: relative; height: 100vh; min-height: 600px; max-height: 800px; overflow: hidden; }
.hero-slider { position: relative; width: 100%; height: 100%; }
.slide { position: absolute; inset: 0; display: flex; align-items: center; opacity: 0; transition: opacity 0.8s ease; }
.slide.active { opacity: 1; z-index: 1; }
.slide-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transform: scale(1.05);
  transition: transform 8s ease;
}
.slide.active .slide-bg { transform: scale(1); }
.slide-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,14,26,0.92) 0%, rgba(10,14,26,0.7) 50%, rgba(10,14,26,0.4) 100%);
}
.slide-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
}
.slide-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,107,0,0.12);
  border: 1px solid rgba(255,107,0,0.3);
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 13px;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 24px;
}
.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  animation: pulse 2s infinite;
}
.badge-dot.badge-green { background: var(--accent-green); }
.badge-dot.badge-purple { background: var(--accent-purple); }
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}
.slide-title {
  font-size: clamp(32px, 5vw, 58px);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 20px;
  color: var(--text-primary);
  letter-spacing: -1px;
}
.slide-title strong { color: var(--primary); }
.title-line {
  display: block;
  font-size: clamp(20px, 3vw, 34px);
  font-weight: 600;
  color: var(--text-secondary);
  margin-top: 8px;
}
.slide-desc {
  font-size: 17px;
  color: var(--text-secondary);
  margin-bottom: 36px;
  line-height: 1.8;
  max-width: 520px;
}
.slide-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 32px; }
.btn-hero-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 36px;
  background: var(--primary);
  color: #fff;
  border-radius: 100px;
  font-size: 17px;
  font-weight: 700;
  transition: all var(--transition);
  box-shadow: 0 8px 32px rgba(255,107,0,0.4);
}
.btn-hero-primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 12px 40px rgba(255,107,0,0.6);
  transform: translateY(-2px);
}
.btn-hero-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 32px;
  border: 1.5px solid var(--border-hover);
  color: var(--text-primary);
  border-radius: 100px;
  font-size: 16px;
  font-weight: 600;
  transition: all var(--transition);
}
.btn-hero-ghost:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}
.slide-meta {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}
.slide-meta span {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--text-muted);
}
.slide-meta svg { color: var(--accent-green); }

/* 轮播控制 */
.slider-controls {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 20px;
}
.slider-prev, .slider-next {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
.slider-prev:hover, .slider-next:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
.slider-dots { display: flex; gap: 8px; }
.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.3);
  transition: all var(--transition);
}
.dot.active {
  width: 24px;
  border-radius: 4px;
  background: var(--primary);
}

/* ---- 数据统计条 ---- */
.stats-bar {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  padding: 28px 0;
}
.stats-grid {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
}
.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 0 48px;
}
.stat-num {
  font-size: 32px;
  font-weight: 900;
  color: var(--primary);
  letter-spacing: -1px;
  line-height: 1;
}
.stat-num sup {
  font-size: 16px;
  font-weight: 700;
  vertical-align: super;
}
.stat-label {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}
.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* ---- 核心功能区 ---- */
.features-section { padding: 100px 0; }
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  margin-bottom: 100px;
}
.feature-row:last-child { margin-bottom: 0; }
.feature-row-right { direction: rtl; }
.feature-row-right > * { direction: ltr; }

.feature-img-wrap {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border);
}
.feature-img-wrap img { width: 100%; height: auto; display: block; }
.feature-img-glow {
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(255,107,0,0.15), transparent 60%);
  pointer-events: none;
}
.feature-img-glow-green { background: linear-gradient(135deg, rgba(0,230,118,0.15), transparent 60%); }
.feature-img-glow-purple { background: linear-gradient(135deg, rgba(179,136,255,0.15), transparent 60%); }

.feature-num {
  font-size: 64px;
  font-weight: 900;
  color: rgba(255,107,0,0.08);
  line-height: 1;
  margin-bottom: -16px;
  letter-spacing: -2px;
}
.feature-tag-label {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--primary);
  background: var(--primary-light);
  border: 1px solid rgba(255,107,0,0.2);
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 16px;
  text-transform: uppercase;
}
.feature-tag-green { color: var(--accent-green); background: rgba(0,230,118,0.1); border-color: rgba(0,230,118,0.2); }
.feature-tag-purple { color: var(--accent-purple); background: rgba(179,136,255,0.1); border-color: rgba(179,136,255,0.2); }

.feature-title {
  font-size: clamp(22px, 2.5vw, 30px);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 16px;
  line-height: 1.3;
  letter-spacing: -0.5px;
}
.feature-desc {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 24px;
}
.feature-list { display: flex; flex-direction: column; gap: 10px; margin-bottom: 32px; }
.feature-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  color: var(--text-secondary);
}
.fl-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  flex-shrink: 0;
}
.fl-dot-green { background: var(--accent-green); }
.fl-dot-purple { background: var(--accent-purple); }

.btn-feature-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: var(--primary);
  color: #fff;
  border-radius: 100px;
  font-size: 15px;
  font-weight: 600;
  transition: all var(--transition);
  box-shadow: 0 4px 20px rgba(255,107,0,0.3);
}
.btn-feature-link:hover {
  background: var(--primary-hover);
  box-shadow: 0 8px 28px rgba(255,107,0,0.5);
  transform: translateY(-1px);
}
.btn-feature-link-green {
  background: var(--accent-green);
  color: #0A1A0A;
  box-shadow: 0 4px 20px rgba(0,230,118,0.3);
}
.btn-feature-link-green:hover {
  background: #00FF8A;
  box-shadow: 0 8px 28px rgba(0,230,118,0.5);
}
.btn-feature-link-purple {
  background: var(--accent-purple);
  color: #1A0A2A;
  box-shadow: 0 4px 20px rgba(179,136,255,0.3);
}
.btn-feature-link-purple:hover {
  background: #C4A0FF;
  box-shadow: 0 8px 28px rgba(179,136,255,0.5);
}

/* ---- 功能卡片网格 ---- */
.func-grid-section { padding: 80px 0; background: var(--bg-surface); }
.func-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.func-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
  overflow: hidden;
}
.func-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}
.func-card-inner {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 28px;
  position: relative;
}
.func-icon-wrap {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.func-icon-orange { background: rgba(255,107,0,0.12); color: var(--primary); }
.func-icon-blue { background: rgba(0,191,255,0.1); color: var(--accent-blue); }
.func-icon-green { background: rgba(0,230,118,0.1); color: var(--accent-green); }
.func-icon-purple { background: rgba(179,136,255,0.1); color: var(--accent-purple); }
.func-icon-cyan { background: rgba(24,255,255,0.1); color: var(--accent-cyan); }
.func-icon-red { background: rgba(255,82,82,0.1); color: var(--accent-red); }

.func-card-body { flex: 1; }
.func-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.func-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }
.func-card-arrow {
  color: var(--text-muted);
  transition: all var(--transition);
  flex-shrink: 0;
  margin-top: 4px;
}
.func-card:hover .func-card-arrow { color: var(--primary); transform: translateX(4px); }

/* ---- 下载CTA区 ---- */
.download-cta-section {
  position: relative;
  padding: 100px 0;
  overflow: hidden;
  text-align: center;
}
.download-cta-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}
.download-cta-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,14,26,0.95) 0%, rgba(10,14,26,0.85) 100%);
}
.download-cta-content { position: relative; z-index: 2; }
.download-cta-title {
  font-size: clamp(28px, 4vw, 46px);
  font-weight: 900;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: -1px;
}
.download-cta-title strong { color: var(--primary); }
.download-cta-sub {
  font-size: 17px;
  color: var(--text-secondary);
  margin-bottom: 48px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
.download-platform-btns {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.btn-platform {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  transition: all var(--transition);
}
.btn-platform:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
  transform: translateY(-2px);
}
.download-version-info { font-size: 13px; color: var(--text-muted); }

/* ---- 新闻区 ---- */
.news-section { padding: 100px 0; }
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.news-grid-3 { grid-template-columns: repeat(3, 1fr); }
.news-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
}
.news-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}
.news-card-link { display: block; text-decoration: none; }
.news-card-img { position: relative; overflow: hidden; aspect-ratio: 16/9; }
.news-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.news-card:hover .news-card-img img { transform: scale(1.06); }
.news-card-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10,14,26,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
}
.news-card:hover .news-card-overlay { opacity: 1; }
.news-read-more {
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 20px;
  border: 1.5px solid rgba(255,255,255,0.6);
  border-radius: 100px;
}
.news-card-body { padding: 20px; }
.news-card-cat {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--primary);
  background: var(--primary-light);
  padding: 3px 10px;
  border-radius: 100px;
  margin-bottom: 10px;
  text-transform: uppercase;
}
.news-card-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color var(--transition);
}
.news-card:hover .news-card-title { color: var(--primary); }
.news-card-excerpt {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
}
.news-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-muted);
  padding-top: 12px;
  border-top: 1px solid var(--border);
}
.news-date, .news-views {
  display: flex;
  align-items: center;
  gap: 5px;
}

/* ---- 用户评价 ---- */
.reviews-section { padding: 80px 0; background: var(--bg-surface); }
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition);
}
.review-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}
.review-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.review-avatar-1 { background: linear-gradient(135deg, #FF6B00, #FF8C2A); }
.review-avatar-2 { background: linear-gradient(135deg, #00BFFF, #0080FF); }
.review-avatar-3 { background: linear-gradient(135deg, #B388FF, #7C4DFF); }
.review-info { flex: 1; }
.review-name { font-size: 15px; font-weight: 700; color: var(--text-primary); display: block; }
.review-role { font-size: 12px; color: var(--text-muted); }
.review-stars { display: flex; gap: 2px; }
.review-text {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  border-left: 3px solid var(--primary);
  padding-left: 16px;
  font-style: normal;
}

/* ---- FAQ ---- */
.faq-section { padding: 80px 0; }
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item[open] { border-color: rgba(255,107,0,0.3); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  transition: color var(--transition);
}
.faq-question:hover { color: var(--primary); }
.faq-item[open] .faq-question { color: var(--primary); }
.faq-icon { flex-shrink: 0; transition: transform var(--transition); }
.faq-item[open] .faq-icon { transform: rotate(180deg); }
.faq-answer {
  padding: 0 24px 20px;
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
}
.faq-answer a { color: var(--primary); text-decoration: underline; }

/* ---- 页脚 ---- */
.site-footer { background: var(--bg-surface); border-top: 1px solid var(--border); }
.footer-main { padding: 64px 0 48px; }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
}
.footer-brand-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}
.footer-contact {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--text-muted);
}
.footer-contact svg { color: var(--primary); }
.footer-contact a { color: var(--text-muted); transition: color var(--transition); }
.footer-contact a:hover { color: var(--primary); }
.footer-nav-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}
.footer-nav ul { display: flex; flex-direction: column; gap: 10px; }
.footer-nav a {
  font-size: 14px;
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer-nav a:hover { color: var(--primary); }

.footer-links-bar {
  border-top: 1px solid var(--border);
  padding: 16px 0;
}
.footer-links-bar .container {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-links-label { font-size: 13px; color: var(--text-muted); white-space: nowrap; }
.footer-links-list { display: flex; gap: 16px; flex-wrap: wrap; }
.footer-links-list a {
  font-size: 13px;
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer-links-list a:hover { color: var(--primary); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  text-align: center;
}
.footer-copyright {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.footer-copyright a { color: var(--text-muted); transition: color var(--transition); }
.footer-copyright a:hover { color: var(--primary); }
.footer-seo-text { font-size: 12px; color: var(--text-muted); }
.footer-seo-text a { color: var(--text-muted); transition: color var(--transition); }
.footer-seo-text a:hover { color: var(--primary); }

/* ---- 列表页布局 ---- */
.page-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  padding: 48px 0;
}
.page-header { margin-bottom: 32px; }
.page-title {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}
.page-subtitle { font-size: 15px; color: var(--text-secondary); }

/* 文章列表卡片 */
.article-list { display: flex; flex-direction: column; gap: 24px; }
.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
}
.article-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}
.article-card-link {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 0;
}
.article-card-img {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/10;
}
.article-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.article-card:hover .article-card-img img { transform: scale(1.05); }
.article-card-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10,14,26,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
}
.article-card:hover .article-card-overlay { opacity: 1; }
.overlay-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}
.article-card-body { padding: 24px; display: flex; flex-direction: column; justify-content: space-between; }
.article-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.article-cat {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--primary);
  background: var(--primary-light);
  padding: 3px 10px;
  border-radius: 100px;
  text-transform: uppercase;
}
.article-date { font-size: 13px; color: var(--text-muted); }
.article-card-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color var(--transition);
}
.article-card:hover .article-card-title { color: var(--primary); }
.article-card-excerpt {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
}
.article-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-muted);
}
.article-views { display: flex; align-items: center; gap: 5px; }
.article-read-link { color: var(--primary); font-weight: 600; }

/* 分页 */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 40px;
}
.pagination-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition);
}
.pagination-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.pagination-list { display: flex; gap: 6px; }
.pagination-num {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.pagination-num.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
.pagination-num:hover:not(.active) {
  border-color: var(--primary);
  color: var(--primary);
}
.pagination-dots { display: flex; align-items: center; color: var(--text-muted); padding: 0 4px; }

/* ---- 侧边栏 ---- */
.sidebar { display: flex; flex-direction: column; gap: 24px; }
.sidebar-widget {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.widget-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  padding: 18px 20px;
  border-bottom: 1px solid var(--border);
}
.widget-title svg { color: var(--primary); }

/* 下载推荐 */
.widget-download-inner { padding: 24px; text-align: center; }
.widget-download-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  color: var(--primary);
}
.widget-download-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.widget-download-desc { font-size: 13px; color: var(--text-muted); margin-bottom: 20px; }
.btn-widget-download {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 28px;
  background: var(--primary);
  color: #fff;
  border-radius: 100px;
  font-size: 14px;
  font-weight: 600;
  transition: all var(--transition);
  margin-bottom: 16px;
  width: 100%;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(255,107,0,0.3);
}
.btn-widget-download:hover {
  background: var(--primary-hover);
  box-shadow: 0 6px 24px rgba(255,107,0,0.5);
}
.widget-download-info {
  display: flex;
  justify-content: center;
  gap: 16px;
  font-size: 12px;
  color: var(--text-muted);
}

/* 热门文章 */
.widget-hot-list { padding: 8px 0; }
.widget-hot-item { border-bottom: 1px solid var(--border); }
.widget-hot-item:last-child { border-bottom: none; }
.widget-hot-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  transition: background var(--transition);
}
.widget-hot-link:hover { background: var(--bg-card-hover); }
.hot-num {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.hot-title {
  flex: 1;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color var(--transition);
}
.widget-hot-link:hover .hot-title { color: var(--primary); }
.hot-arrow { color: var(--text-muted); flex-shrink: 0; }

/* 标签云 */
.widget-tags-list { padding: 16px 20px; display: flex; flex-wrap: wrap; gap: 8px; }
.tag-item {
  padding: 6px 14px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  border-radius: 100px;
  font-size: 13px;
  transition: all var(--transition);
}
.tag-item:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}

/* 广告位 */
.widget-ad-inner {
  padding: 24px;
  background: linear-gradient(135deg, rgba(255,107,0,0.08), rgba(255,107,0,0.02));
  position: relative;
}
.ad-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-light);
  padding: 3px 10px;
  border-radius: 100px;
  margin-bottom: 12px;
}
.ad-title { font-size: 16px; font-weight: 700; color: var(--text-primary); margin-bottom: 8px; }
.ad-desc { font-size: 13px; color: var(--text-muted); margin-bottom: 16px; line-height: 1.6; }
.btn-ad {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border: 1px solid var(--primary);
  color: var(--primary);
  border-radius: 100px;
  font-size: 14px;
  font-weight: 600;
  transition: all var(--transition);
}
.btn-ad:hover { background: var(--primary); color: #fff; }

/* ---- 内容页 ---- */
.article-main { flex: 1; }
.article-header { margin-bottom: 32px; }
.article-cat-badge { margin-bottom: 16px; }
.article-cat-badge a {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--primary);
  background: var(--primary-light);
  border: 1px solid rgba(255,107,0,0.2);
  padding: 4px 12px;
  border-radius: 100px;
  text-transform: uppercase;
}
.article-title {
  font-size: clamp(22px, 3.5vw, 36px);
  font-weight: 900;
  color: var(--text-primary);
  line-height: 1.3;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}
.article-meta-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.article-meta-left { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--text-muted);
}
.meta-item svg { color: var(--text-muted); }
.meta-update { font-size: 13px; color: var(--text-muted); display: flex; align-items: center; gap: 6px; }

.article-featured-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 36px;
  border: 1px solid var(--border);
}
.article-featured-img img { width: 100%; height: auto; }

.article-body {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 40px;
}
.article-body h2 { font-size: 22px; font-weight: 700; color: var(--text-primary); margin: 32px 0 16px; }
.article-body h3 { font-size: 18px; font-weight: 700; color: var(--text-primary); margin: 24px 0 12px; }
.article-body p { margin-bottom: 16px; }
.article-body img { border-radius: var(--radius-md); margin: 20px 0; border: 1px solid var(--border); }
.article-body ul, .article-body ol { padding-left: 24px; margin-bottom: 16px; }
.article-body li { margin-bottom: 8px; list-style: disc; }
.article-body blockquote {
  border-left: 4px solid var(--primary);
  padding: 16px 20px;
  background: var(--primary-light);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 20px 0;
  font-style: italic;
  color: var(--text-secondary);
}
.article-body a { color: var(--primary); text-decoration: underline; }
.article-body code {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 14px;
  color: var(--accent-cyan);
}
.article-body pre {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  overflow-x: auto;
  margin: 20px 0;
}

.article-tags { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 32px; }
.tags-label { display: flex; align-items: center; gap: 6px; font-size: 14px; color: var(--text-muted); }
.tags-label svg { color: var(--primary); }
.article-tag {
  padding: 5px 14px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  border-radius: 100px;
  font-size: 13px;
  transition: all var(--transition);
}
.article-tag:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}

/* 文章内CTA */
.article-cta { margin-bottom: 40px; }
.article-cta-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 28px 32px;
  background: linear-gradient(135deg, rgba(255,107,0,0.1), rgba(255,107,0,0.04));
  border: 1px solid rgba(255,107,0,0.2);
  border-radius: var(--radius-lg);
}
.cta-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  flex-shrink: 0;
}
.cta-text { flex: 1; }
.cta-title { font-size: 18px; font-weight: 700; color: var(--text-primary); margin-bottom: 4px; }
.cta-desc { font-size: 14px; color: var(--text-muted); }
.btn-cta-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: var(--primary);
  color: #fff;
  border-radius: 100px;
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
  transition: all var(--transition);
  box-shadow: 0 4px 20px rgba(255,107,0,0.3);
}
.btn-cta-download:hover {
  background: var(--primary-hover);
  box-shadow: 0 8px 28px rgba(255,107,0,0.5);
}

/* 上下篇 */
.article-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 40px;
}
.article-nav-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: all var(--transition);
}
.article-nav-item:hover {
  border-color: var(--primary);
  background: var(--primary-light);
}
.article-nav-next { text-align: right; }
.nav-direction {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 600;
  letter-spacing: 0.5px;
}
.article-nav-next .nav-direction { justify-content: flex-end; }
.nav-title {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 相关文章 */
.related-articles { }
.related-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.related-title svg { color: var(--primary); }
.related-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.related-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition);
}
.related-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}
.related-card-link { display: block; }
.related-card-img { aspect-ratio: 16/9; overflow: hidden; }
.related-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.related-card:hover .related-card-img img { transform: scale(1.05); }
.related-card-body { padding: 12px; }
.related-card-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color var(--transition);
}
.related-card:hover .related-card-title { color: var(--primary); }
.related-card-date { font-size: 12px; color: var(--text-muted); }

/* 文章目录 */
.toc-list { padding: 8px 0; }
.toc-item {
  display: block;
  padding: 8px 20px;
  font-size: 13px;
  color: var(--text-muted);
  border-left: 2px solid transparent;
  transition: all var(--transition);
  line-height: 1.5;
}
.toc-item:hover {
  color: var(--primary);
  border-left-color: var(--primary);
  background: var(--primary-light);
}
.toc-h3 { padding-left: 32px; font-size: 12px; }

/* ---- 下载页 ---- */
.download-hero {
  position: relative;
  padding: 80px 0;
  overflow: hidden;
}
.download-hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}
.download-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,14,26,0.97) 0%, rgba(10,14,26,0.88) 100%);
}
.download-hero-content {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
}
.download-hero-left { display: flex; align-items: center; gap: 28px; }
.download-app-icon img {
  width: 80px;
  height: 80px;
  border-radius: 20px;
  box-shadow: 0 8px 32px rgba(255,107,0,0.3);
}
.download-app-name {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 900;
  color: var(--text-primary);
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}
.download-app-version {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.version-badge {
  display: inline-block;
  padding: 4px 12px;
  background: var(--primary-light);
  border: 1px solid rgba(255,107,0,0.3);
  color: var(--primary);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 700;
}
.version-date { font-size: 13px; color: var(--text-muted); }
.download-app-rating {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
}
.rating-stars { display: flex; gap: 2px; }
.rating-score { font-size: 18px; font-weight: 700; color: var(--primary); }
.rating-count { font-size: 13px; color: var(--text-muted); }
.download-app-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.app-tag {
  padding: 4px 12px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 500;
}
.download-main-btn-wrap { text-align: center; }
.btn-download-main {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  padding: 20px 48px;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius-lg);
  font-size: 18px;
  font-weight: 700;
  transition: all var(--transition);
  box-shadow: 0 8px 40px rgba(255,107,0,0.4);
  margin-bottom: 12px;
}
.btn-download-main:hover {
  background: var(--primary-hover);
  box-shadow: 0 12px 48px rgba(255,107,0,0.6);
  transform: translateY(-2px);
}
.btn-download-main strong { display: block; font-size: 20px; }
.btn-download-main em { display: block; font-size: 13px; font-style: normal; opacity: 0.8; font-weight: 400; }
.download-main-tip {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-muted);
}
.download-main-tip svg { color: var(--accent-green); }

/* 平台选项卡 */
.download-tabs-section { padding: 80px 0; }
.platform-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0;
}
.platform-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-muted);
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  border: 1px solid transparent;
  border-bottom: none;
  transition: all var(--transition);
  position: relative;
  bottom: -1px;
}
.platform-tab:hover { color: var(--text-primary); }
.platform-tab.active {
  color: var(--primary);
  background: var(--bg-card);
  border-color: var(--border);
  border-bottom-color: var(--bg-card);
}
.tab-panel { display: none; }
.tab-panel.active { display: block; }
.download-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 36px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.download-panel-left { display: flex; align-items: center; gap: 24px; }
.panel-platform-icon {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-md);
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
}
.panel-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}
.panel-meta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 14px;
  font-size: 13px;
  color: var(--text-muted);
}
.panel-features { display: flex; gap: 12px; flex-wrap: wrap; }
.pf-item {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  color: var(--text-secondary);
}
.pf-item svg { color: var(--accent-green); }
.download-panel-right { display: flex; flex-direction: column; align-items: center; gap: 12px; flex-shrink: 0; }
.btn-panel-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: var(--primary);
  color: #fff;
  border-radius: 100px;
  font-size: 15px;
  font-weight: 600;
  transition: all var(--transition);
  box-shadow: 0 4px 20px rgba(255,107,0,0.3);
  white-space: nowrap;
}
.btn-panel-download:hover {
  background: var(--primary-hover);
  box-shadow: 0 8px 28px rgba(255,107,0,0.5);
}
.btn-panel-download-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  box-shadow: none;
}
.btn-panel-download-ghost:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
  box-shadow: none;
}
.qr-code-wrap { text-align: center; }
.qr-placeholder {
  width: 100px;
  height: 100px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
}
.qr-placeholder p { font-size: 11px; color: var(--text-muted); }

/* 安装步骤 */
.install-steps-section { padding: 80px 0; background: var(--bg-surface); }
.steps-grid {
  display: flex;
  align-items: center;
  gap: 0;
}
.step-card {
  flex: 1;
  text-align: center;
  padding: 40px 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
}
.step-card:hover {
  border-color: rgba(255,107,0,0.3);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow-orange);
}
.step-num {
  font-size: 48px;
  font-weight: 900;
  color: rgba(255,107,0,0.1);
  line-height: 1;
  margin-bottom: -8px;
  letter-spacing: -2px;
}
.step-icon {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-md);
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin: 0 auto 20px;
}
.step-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}
.step-desc { font-size: 14px; color: var(--text-muted); line-height: 1.7; }
.step-arrow {
  width: 48px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
}

/* 更新日志 */
.changelog-section { padding: 80px 0; }
.changelog-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 24px; }
.changelog-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
}
.changelog-version {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.version-tag {
  font-size: 15px;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-light);
  padding: 4px 14px;
  border-radius: 100px;
}
.version-date { font-size: 13px; color: var(--text-muted); }
.version-badge-new {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent-green);
  background: rgba(0,230,118,0.1);
  border: 1px solid rgba(0,230,118,0.2);
  padding: 3px 10px;
  border-radius: 100px;
}
.changelog-content { padding-left: 20px; display: flex; flex-direction: column; gap: 8px; }
.changelog-content li {
  font-size: 14px;
  color: var(--text-secondary);
  list-style: disc;
  line-height: 1.6;
}

/* 相关资讯 */
.related-news-section { padding: 80px 0; background: var(--bg-surface); }

/* ---- 响应式 ---- */
@media (max-width: 1100px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .func-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-row { gap: 48px; }
}

@media (max-width: 900px) {
  .page-layout { grid-template-columns: 1fr; }
  .sidebar { display: grid; grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .reviews-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-row { grid-template-columns: 1fr; gap: 32px; }
  .feature-row-right { direction: ltr; }
  .stats-grid { gap: 0; }
  .stat-item { padding: 16px 24px; }
  .steps-grid { flex-direction: column; }
  .step-arrow { transform: rotate(90deg); }
  .download-hero-content { flex-direction: column; }
  .download-panel { flex-direction: column; }
  .article-nav { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .main-nav { display: none; }
  .main-nav.open { display: block; position: fixed; inset: 68px 0 0; background: var(--bg-dark); z-index: 999; padding: 24px; overflow-y: auto; }
  .nav-list { flex-direction: column; gap: 4px; }
  .nav-item > a { font-size: 17px; padding: 12px 16px; }
  .dropdown-menu { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: none; background: var(--bg-surface); margin-top: 4px; }
  .mobile-menu-btn { display: flex; }
  .hero-section { min-height: 100svh; }
  .slide-title { font-size: 28px; }
  .slide-desc { font-size: 15px; }
  .btn-hero-primary { padding: 14px 28px; font-size: 15px; }
  .news-grid { grid-template-columns: 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
  .func-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .sidebar { grid-template-columns: 1fr; }
  .article-card-link { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }
  .download-hero-left { flex-direction: column; text-align: center; }
  .platform-tabs { flex-wrap: wrap; }
  .article-cta-inner { flex-direction: column; text-align: center; }
  .stat-divider { display: none; }
  .stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
  .stat-item { padding: 16px 8px; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .section-header { margin-bottom: 36px; }
  .features-section { padding: 60px 0; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .download-platform-btns { flex-direction: column; align-items: center; }
  .btn-platform { width: 100%; max-width: 280px; justify-content: center; }
}

/* ---- 动画 ---- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
.slide.active .slide-content { animation: fadeInUp 0.8s ease both; }
.slide.active .slide-badge { animation: fadeInUp 0.6s ease 0.1s both; }
.slide.active .slide-title { animation: fadeInUp 0.6s ease 0.2s both; }
.slide.active .slide-desc { animation: fadeInUp 0.6s ease 0.3s both; }
.slide.active .slide-actions { animation: fadeInUp 0.6s ease 0.4s both; }
.slide.active .slide-meta { animation: fadeInUp 0.6s ease 0.5s both; }