/* ==========================================================================
   狗狗云 (DogDogYun) - 商务极简风格 CSS 样式表 (包含 SEO 文章图卡与文章页样式)
   ========================================================================== */

:root {
  --bg-dark: #0b0f19;
  --bg-card: rgba(23, 31, 48, 0.75);
  --bg-card-hover: rgba(30, 42, 66, 0.9);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(37, 99, 235, 0.4);
  
  --primary-blue: #2563eb;
  --primary-sky: #38bdf8;
  --accent-green: #10b981;
  --accent-purple: #8b5cf6;
  --accent-orange: #f59e0b;
  
  --gradient-main: linear-gradient(135deg, #38bdf8 0%, #2563eb 60%, #8b5cf6 100%);
  --gradient-btn: linear-gradient(135deg, #2563eb 0%, #38bdf8 100%);
  --gradient-card: linear-gradient(180deg, rgba(37, 99, 235, 0.08) 0%, rgba(23, 31, 48, 0.85) 100%);
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --shadow-glow: 0 0 30px rgba(37, 99, 235, 0.2);
  --transition-fast: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-family);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(37, 99, 235, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 90% 70%, rgba(56, 189, 248, 0.06) 0%, transparent 45%);
  background-attachment: fixed;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 90px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 60px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: rgba(37, 99, 235, 0.12);
  border: 1px solid rgba(37, 99, 235, 0.3);
  color: var(--primary-sky);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  line-height: 1.25;
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 1.05rem;
}

.gradient-text {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* 按钮样式 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: var(--radius-full);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
  text-align: center;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-btn);
  color: #ffffff;
  font-weight: 700;
  box-shadow: 0 4px 20px rgba(37, 99, 235, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(37, 99, 235, 0.6);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border-color: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 20px;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.05rem;
}

.btn-full {
  width: 100%;
}

/* 页眉与导航 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition-fast);
  background: rgba(11, 15, 25, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-main);
}

.logo-icon {
  width: 38px;
  height: 38px;
  background: var(--gradient-main);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-link {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition-fast);
}

.nav-link:hover {
  color: var(--primary-sky);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  cursor: pointer;
}

/* Hero 主视觉区 - 左右分布 */
.hero {
  padding: 160px 0 100px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 50px;
  align-items: center;
}

.hero-content {
  text-align: left;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(37, 99, 235, 0.1);
  border: 1px solid rgba(37, 99, 235, 0.25);
  border-radius: var(--radius-full);
  color: var(--primary-sky);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background: var(--accent-green);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-green);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(1.3); }
  100% { opacity: 1; transform: scale(1); }
}

.hero-title {
  font-size: 3.25rem;
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.hero-stats-inline {
  display: flex;
  gap: 30px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

.stat-inline-item .stat-val {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--primary-sky);
}

.stat-inline-item .stat-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* 动态图卡区域 (Hero 右侧 动态视效卡片) */
.hero-dynamic-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-glow);
  position: relative;
  overflow: hidden;
  animation: floatCard 6s ease-in-out infinite;
}

@keyframes floatCard {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.card-top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}

.card-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.05rem;
  font-weight: 700;
}

.status-tag {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-green);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.speed-radar-box {
  background: rgba(11, 15, 25, 0.6);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 20px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.radar-circle {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  border: 2px dashed rgba(56, 189, 248, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  flex-shrink: 0;
  animation: spin 10s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.radar-inner {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(37, 99, 235, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-sky);
}

.radar-data {
  flex-grow: 1;
}

.radar-data-title {
  font-size: 0.8rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.radar-data-value {
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--text-main);
  line-height: 1.2;
}

.radar-data-sub {
  font-size: 0.85rem;
  color: var(--accent-green);
  display: flex;
  align-items: center;
  gap: 6px;
}

.node-live-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.node-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}

.node-item:hover {
  background: rgba(37, 99, 235, 0.1);
  border-color: rgba(37, 99, 235, 0.3);
}

.node-info {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 0.9rem;
}

.node-ping {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-green);
}

/* 核心优势 */
.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-fast);
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-glow);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-glow);
}

.feature-icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: rgba(37, 99, 235, 0.15);
  color: var(--primary-sky);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
}

.feature-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.feature-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* 流媒体 & AI */
.support-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.support-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px;
}

.support-box-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
}

.support-box-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(139, 92, 246, 0.15);
  color: var(--accent-purple);
  display: flex;
  align-items: center;
  justify-content: center;
}

.support-box-title {
  font-size: 1.35rem;
  font-weight: 700;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.tag-item {
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  transition: var(--transition-fast);
}

.tag-item:hover {
  border-color: var(--primary-sky);
  background: rgba(56, 189, 248, 0.08);
}

.clients-bar {
  margin-top: 40px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
}

.clients-list {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-top: 10px;
}

/* 真实套餐价格对比表 */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition-fast);
}

.pricing-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-glow);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
}

.pricing-card.popular {
  border-color: var(--primary-sky);
  background: linear-gradient(180deg, rgba(37, 99, 235, 0.12) 0%, rgba(23, 31, 48, 0.85) 100%);
  box-shadow: var(--shadow-glow);
}

.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-btn);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
}

.pricing-header {
  text-align: center;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 20px;
}

.plan-name {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.plan-price {
  font-size: 2.25rem;
  font-weight: 900;
  color: var(--text-main);
}

.plan-price span {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 400;
}

.plan-features {
  list-style: none;
  margin-bottom: 30px;
  flex-grow: 1;
}

.plan-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.icon-check {
  color: var(--accent-green);
  flex-shrink: 0;
}

.icon-cross {
  color: var(--text-dim);
  flex-shrink: 0;
}

/* ==========================================================================
   全新 9 篇 SEO 文章图卡区域样式 (放在价格板块下方)
   ========================================================================== */
.articles-section {
  padding: 80px 0;
  background: rgba(0, 0, 0, 0.2);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition-fast);
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow);
  background: var(--bg-card-hover);
}

.article-card-thumb {
  height: 160px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.3) 0%, rgba(139, 92, 246, 0.3) 100%);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.article-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: rgba(11, 15, 25, 0.75);
  backdrop-filter: blur(8px);
  color: var(--primary-sky);
  border: 1px solid rgba(56, 189, 248, 0.3);
}

.article-thumb-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
}

.article-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-bottom: 12px;
}

.article-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 12px;
  color: var(--text-main);
  transition: var(--transition-fast);
}

.article-card:hover .article-card-title {
  color: var(--primary-sky);
}

.article-card-excerpt {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary-sky);
}

/* ==========================================================================
   文章详情页 (SEO Article Page Style)
   ========================================================================== */
.article-header {
  padding: 150px 0 40px;
  text-align: center;
  background: linear-gradient(180deg, rgba(37, 99, 235, 0.08) 0%, transparent 100%);
  border-bottom: 1px solid var(--border-color);
}

.article-title-main {
  font-size: 2.5rem;
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: 20px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.article-info-bar {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  font-size: 0.9rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.article-body-wrapper {
  padding: 60px 0 90px;
}

.article-content-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 50px;
  line-height: 1.85;
  font-size: 1.05rem;
}

.article-toc {
  background: rgba(11, 15, 25, 0.6);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px 30px;
  margin-bottom: 40px;
}

.article-toc-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--primary-sky);
}

.article-toc ul {
  list-style: none;
  padding: 0;
}

.article-toc li {
  margin-bottom: 8px;
}

.article-toc a {
  color: var(--text-muted);
  transition: var(--transition-fast);
}

.article-toc a:hover {
  color: var(--primary-sky);
}

.article-content-box h2 {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-main);
  margin: 40px 0 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-color);
}

.article-content-box h3 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--primary-sky);
  margin: 28px 0 14px;
}

.article-content-box p {
  color: var(--text-muted);
  margin-bottom: 20px;
}

.article-content-box ul, .article-content-box ol {
  padding-left: 24px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.article-content-box li {
  margin-bottom: 8px;
}

.article-content-box blockquote {
  background: rgba(37, 99, 235, 0.08);
  border-left: 4px solid var(--primary-sky);
  padding: 16px 24px;
  border-radius: var(--radius-sm);
  margin-bottom: 24px;
  color: var(--text-main);
  font-style: italic;
}

.internal-link {
  color: var(--primary-sky);
  font-weight: 600;
  text-decoration: underline;
}

.internal-link:hover {
  color: #ffffff;
}

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

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
}

.review-stars {
  color: var(--accent-orange);
  margin-bottom: 12px;
}

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

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

.user-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gradient-main);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #ffffff;
}

/* FAQ */
.faq-container {
  max-width: 820px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
}

.faq-question {
  padding: 20px 24px;
  font-size: 1.05rem;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.faq-question:hover {
  color: var(--primary-sky);
}

.faq-icon {
  transition: transform 0.3s ease;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
  padding: 0 24px;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 24px 20px 24px;
  transition: max-height 0.3s ease-in-out;
}

/* 页脚 - 严格只保留 4 个标题 */
.footer {
  background: #070a12;
  border-top: 1px solid var(--border-color);
  padding: 50px 0 30px;
  text-align: center;
}

.footer-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 40px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}

.footer-link {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-main);
  transition: var(--transition-fast);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
}

.footer-link:hover {
  color: var(--primary-sky);
  background: rgba(56, 189, 248, 0.08);
}

.footer-bottom {
  color: var(--text-dim);
  font-size: 0.875rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 24px;
}

/* 响应式适配 */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .pricing-grid,
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .section {
    padding: 60px 0;
  }
  .hero {
    padding: 130px 0 50px;
  }
  .hero-title {
    font-size: 2.25rem;
  }
  .features-grid,
  .support-container,
  .reviews-grid,
  .pricing-grid,
  .articles-grid {
    grid-template-columns: 1fr;
  }
  .mobile-toggle {
    display: block;
  }
  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: #0b0f19;
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    transform: translateY(-150%);
    transition: transform 0.3s ease;
    opacity: 0;
    pointer-events: none;
  }
  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .footer-nav {
    flex-direction: column;
    gap: 16px;
  }
  .article-content-box {
    padding: 24px;
  }
}