/* ==========================================
   扬帆云 (Yangfan Cloud) - 核心样式库
   简洁企业级 + Bootstrap 后台模板风
   纯 CSS3 / 零外部框架 / 秒开体验
========================================== */

:root {
  --primary-color: #1e40af;       /* 深蓝/企业主色 */
  --primary-hover: #1d4ed8;       /* 悬停蓝 */
  --primary-light: #eff6ff;       /* 浅蓝背景 */
  --primary-gradient: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
  --accent-color: #0284c7;        /* 亮蓝点缀 */
  --success-color: #10b981;       /* 成功/在线绿 */
  
  --bg-main: #ffffff;             /* 网站主底色：白色 */
  --bg-secondary: #f8fafc;        /* 辅助背景：非常淡的蓝灰 */
  --bg-card: #ffffff;            /* 卡片背景 */
  --bg-dark: #0f172a;             /* 深色区块/页脚 */
  
  --text-primary: #0f172a;        /* 主文字 */
  --text-secondary: #475569;      /* 副文字 */
  --text-muted: #64748b;          /* 弱化文字 */
  --border-color: #e2e8f0;        /* 边框颜色 */
  --border-hover: #bfdbfe;        /* 边框悬停 */
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -2px rgba(15, 23, 42, 0.04);
  --shadow-glow: 0 0 25px rgba(37, 99, 235, 0.2);
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 基础重置 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  font-size: 16px;
  color: var(--text-primary);
  background-color: var(--bg-main);
  line-height: 1.6;
}

body {
  overflow-x: hidden;
  position: relative;
  background-color: var(--bg-main);
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: var(--transition);
}

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

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

ul {
  list-style: none;
}

/* 容器限制 */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 顶部导航 Bar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.navbar-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 800;
  color: #1e293b;
  cursor: pointer;
  user-select: none;
  letter-spacing: -0.5px;
}

.logo-icon-svg {
  height: 40px;
  width: auto;
  transition: var(--transition);
}

.logo:hover .logo-icon-svg {
  transform: translateY(-2px) scale(1.05);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-links a {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding: 6px 0;
}

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

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: var(--transition);
  border-radius: 2px;
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* 按钮基础样式 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary-gradient);
  color: #ffffff !important;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
  background: linear-gradient(135deg, #1d4ed8 0%, #2563eb 100%);
}

.btn-secondary {
  background: #ffffff;
  color: var(--primary-color) !important;
  border-color: #bfdbfe;
  box-shadow: var(--shadow-sm);
}

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

.btn-outline {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border-color);
}

.btn-outline:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.btn-lg {
  padding: 14px 32px;
  font-size: 1.05rem;
  border-radius: var(--radius-md);
}

.btn-pulse {
  animation: pulse-glow 2s infinite;
}

@keyframes pulse-glow {
  0% { box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.4); }
  70% { box-shadow: 0 0 0 12px rgba(37, 99, 235, 0); }
  100% { box-shadow: 0 0 0 0 rgba(37, 99, 235, 0); }
}

/* 章节通用定义 */
section {
  padding: 90px 0;
  position: relative;
}

.section-bg-alt {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 60px;
}

.badge-tag {
  display: inline-block;
  padding: 6px 14px;
  background: var(--primary-light);
  color: var(--primary-color);
  font-weight: 700;
  font-size: 0.85rem;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
  border: 1px solid #bfdbfe;
  letter-spacing: 0.5px;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.3;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* 主视觉区 Hero Section */
.hero {
  padding: 80px 0 100px;
  background: radial-gradient(circle at 80% 20%, rgba(219, 234, 254, 0.5) 0%, rgba(255, 255, 255, 0) 60%);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

.hero-content h1 {
  font-size: 3rem;
  font-weight: 900;
  line-height: 1.25;
  color: var(--text-primary);
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.hero-content h1 .text-highlight {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 40px;
}

.hero-features-list {
  display: flex;
  gap: 24px;
  border-top: 1px solid var(--border-color);
  padding-top: 24px;
}

.hero-feature-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.hero-feature-item svg {
  color: var(--success-color);
  flex-shrink: 0;
}

/* Hero 右侧动态仪表盘控制台 (Bootstrap后台风卡片) */
.hero-visual {
  position: relative;
}

.dashboard-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  padding: 24px;
  position: relative;
}

.dashboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 16px;
  margin-bottom: 20px;
}

.dashboard-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-primary);
}

.status-dot {
  width: 10px;
  height: 10px;
  background: var(--success-color);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--success-color);
  animation: blink 1.5s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.node-metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}

.metric-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px;
  text-align: center;
}

.metric-value {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--primary-color);
}

.metric-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 600;
  margin-top: 2px;
}

.live-nodes-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.node-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
}

.node-info {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
}

.flag-icon {
  font-size: 1.1rem;
}

.node-ping {
  font-weight: 700;
  color: var(--success-color);
  background: #ecfdf5;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
}

/* 核心优势 3卡片 */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: #bfdbfe;
  box-shadow: var(--shadow-lg);
}

.feature-icon-box {
  width: 60px;
  height: 60px;
  background: var(--primary-light);
  color: var(--primary-color);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 24px;
  transition: var(--transition);
}

.feature-card:hover .feature-icon-box {
  background: var(--primary-gradient);
  color: #ffffff;
}

.feature-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.98rem;
  line-height: 1.6;
}

/* 流媒体与 AI 支持 */
.media-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.media-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: var(--transition);
}

.media-card:hover {
  border-color: var(--primary-color);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.media-icon-badge {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.media-info h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
}

.media-info p {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* 套餐价格表 */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  align-items: stretch;
}

.pricing-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: var(--transition);
}

.pricing-card:hover {
  border-color: var(--primary-color);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.pricing-card.popular {
  border: 2px solid var(--primary-color);
  box-shadow: var(--shadow-glow);
}

.popular-ribbon {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary-gradient);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
}

.plan-name {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.plan-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 20px;
  min-height: 40px;
}

.plan-price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 24px;
}

.price-currency {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary-color);
}

.price-amount {
  font-size: 2.8rem;
  font-weight: 900;
  color: var(--text-primary);
  line-height: 1;
}

.price-period {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.plan-features {
  margin-bottom: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.plan-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.plan-features li svg {
  color: var(--success-color);
  flex-shrink: 0;
}

/* SEO 文章卡片区 (价格表下方) */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.article-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
}

.article-card:hover {
  border-color: var(--primary-color);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.article-tag {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent-color);
  background: #e0f2fe;
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  display: inline-block;
  margin-bottom: 12px;
  width: fit-content;
}

.article-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  line-height: 1.4;
}

.article-snippet {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.6;
}

.article-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-color);
  padding-top: 14px;
}

.article-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.btn-read-more {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--primary-color);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  background: none;
  border: none;
}

.btn-read-more:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}

/* FAQ 常见问题手风琴 */
.faq-list {
  max-width: 840px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.active {
  border-color: var(--primary-color);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  padding: 20px 24px;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
}

.faq-toggle-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.faq-item.active .faq-toggle-icon {
  transform: rotate(180deg);
  background: var(--primary-light);
  color: var(--primary-color);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 24px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 24px 20px;
}

/* 用户评价 */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.review-stars {
  color: #f59e0b;
  margin-bottom: 14px;
  font-size: 1.1rem;
}

.review-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.6;
}

.review-user {
  display: flex;
  align-items: center;
  gap: 12px;
}

.avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary-color);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.user-info h5 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}

.user-info p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* 页脚 Footer */
footer {
  background: var(--bg-dark);
  color: #94a3b8;
  padding: 70px 0 30px;
  border-top: 1px solid #1e293b;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-brand h3 {
  color: #ffffff;
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 320px;
}

.footer-col h4 {
  color: #ffffff;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  color: #94a3b8;
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-links a:hover {
  color: #ffffff;
}

.footer-bottom {
  border-top: 1px solid #1e293b;
  padding-top: 30px;
  text-align: center;
}

.footer-pbn-links {
  margin-top: 16px;
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  font-size: 0.9rem;
}

.footer-pbn-links a {
  color: #60a5fa;
  font-weight: 600;
  text-decoration: underline;
  transition: var(--transition);
}

.footer-pbn-links a:hover {
  color: #93c5fd;
}

/* 右侧悬浮章节切换按钮 (Floating Section Navigation Arrows) */
.floating-nav {
  position: fixed;
  right: 24px;
  bottom: 50%;
  transform: translateY(50%);
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  padding: 8px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
}

.nav-arrow-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #ffffff;
  border: 1px solid var(--border-color);
  color: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.nav-arrow-btn:hover {
  background: var(--primary-gradient);
  color: #ffffff;
  border-color: transparent;
  transform: scale(1.12);
}

.nav-arrow-btn:active {
  transform: scale(0.95);
}

/* 文章模态框 (Modal Reader) */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(6px);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-overlay.active {
  display: flex;
}

.modal-container {
  background: #ffffff;
  border-radius: var(--radius-lg);
  max-width: 900px;
  width: 100%;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  overflow: hidden;
  animation: modalIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.95) translateY(10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
  padding: 20px 30px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-secondary);
}

.modal-header h3 {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
}

.modal-close {
  background: transparent;
  border: none;
  font-size: 1.6rem;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  transition: var(--transition);
}

.modal-close:hover {
  color: var(--text-primary);
  transform: rotate(90deg);
}

.modal-body {
  padding: 30px;
  overflow-y: auto;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.modal-body h2, .modal-body h3 {
  color: var(--text-primary);
  margin: 24px 0 12px;
  font-weight: 800;
}

.modal-body p {
  margin-bottom: 16px;
}

.modal-body ul {
  list-style: disc;
  margin-left: 20px;
  margin-bottom: 16px;
}

.modal-body .cta-box {
  background: var(--primary-light);
  border: 1px solid #bfdbfe;
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  margin: 30px 0;
}

/* 移动端响应式 (@media) */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-top {
    grid-template-columns: 1fr 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

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

  .features-grid,
  .media-grid,
  .pricing-grid,
  .articles-grid,
  .reviews-grid {
    grid-template-columns: 1fr;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .floating-nav {
    right: 12px;
    bottom: 20px;
    transform: none;
  }

  .nav-arrow-btn {
    width: 38px;
    height: 38px;
  }
}