/* 奈云 (Naiyun) 官方样式表 - 商务极简风，纯原生 CSS 零依赖 */
:root {
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --bg-card: rgba(17, 24, 39, 0.75);
  --bg-card-hover: rgba(31, 41, 55, 0.85);
  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --accent-blue: #0ea5e9;
  --accent-indigo: #6366f1;
  --accent-purple: #8b5cf6;
  --accent-green: #10b981;
  --accent-amber: #f59e0b;
  --gradient-primary: linear-gradient(135deg, #0ea5e9 0%, #6366f1 100%);
  --gradient-btn: linear-gradient(135deg, #0284c7 0%, #4f46e5 100%);
  --gradient-btn-hover: linear-gradient(135deg, #0369a1 0%, #4338ca 100%);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(14, 165, 233, 0.3);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 30px rgba(14, 165, 233, 0.15);
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
}

/* Reset & Base Styles */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: inherit;
  text-decoration: none;
  transition: all 0.25s ease;
}

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

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

/* Header & Navigation Catalog */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(11, 15, 25, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  padding: 14px 0;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -0.3px;
  color: #fff;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 0 15px rgba(14, 165, 233, 0.35);
}

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

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 4px 0;
  position: relative;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--accent-blue);
  transition: width 0.25s ease;
}

.nav-link:hover {
  color: #fff;
}

.nav-link:hover::after {
  width: 100%;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: all 0.3s ease;
  text-align: center;
}

.btn-primary {
  background: var(--gradient-btn);
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(2, 132, 199, 0.3);
}

.btn-primary:hover {
  background: var(--gradient-btn-hover);
  box-shadow: 0 6px 22px rgba(79, 70, 229, 0.45);
  transform: translateY(-2px);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--accent-blue);
  color: #fff;
  transform: translateY(-2px);
}

.btn-lg {
  padding: 14px 32px;
  font-size: 1.02rem;
}

/* Hero Section */
.hero {
  position: relative;
  padding: 70px 0 60px;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: -80px;
  left: 20%;
  width: 500px;
  height: 350px;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.12) 0%, rgba(99, 102, 241, 0.08) 50%, rgba(11, 15, 25, 0) 75%);
  pointer-events: none;
  z-index: 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 1;
}

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

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 14px;
  border-radius: var(--radius-full);
  background: rgba(14, 165, 233, 0.08);
  border: 1px solid rgba(14, 165, 233, 0.2);
  color: var(--accent-blue);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 20px;
}

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

@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.3); opacity: 0.7; }
}

.hero-title {
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -0.8px;
}

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

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.hero-features-bar {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.88rem;
}

.hero-feature-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.hero-feature-item svg {
  color: var(--accent-blue);
}

/* Dynamic Graphic Card (Hero Right) */
.hero-right {
  position: relative;
}

.dynamic-card-container {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(12px);
  position: relative;
  overflow: hidden;
  animation: card-float 6s ease-in-out infinite;
}

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

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

.dashboard-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-green);
}

.pulse-circle {
  width: 10px;
  height: 10px;
  background-color: var(--accent-green);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--accent-green);
  animation: pulse-ring 2s ease-out infinite;
}

@keyframes pulse-ring {
  0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.6); }
  70% { box-shadow: 0 0 0 10px rgba(16, 185, 129, 0); }
  100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.dashboard-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}

.speed-meter-box {
  background: rgba(17, 24, 39, 0.9);
  border: 1px solid rgba(14, 165, 233, 0.2);
  border-radius: var(--radius-md);
  padding: 18px;
  margin-bottom: 20px;
}

.speed-meter-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.speed-value {
  font-size: 1.8rem;
  font-weight: 800;
  color: #fff;
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.speed-unit {
  font-size: 0.9rem;
  color: var(--accent-blue);
  font-weight: 600;
}

.speed-wave-bar {
  display: flex;
  align-items: flex-end;
  gap: 5px;
  height: 36px;
  margin-top: 14px;
}

.wave-col {
  flex: 1;
  background: var(--gradient-primary);
  border-radius: 3px;
  animation: wave-anim 1.8s ease-in-out infinite alternate;
}

.wave-col:nth-child(1) { height: 40%; animation-delay: 0.1s; }
.wave-col:nth-child(2) { height: 65%; animation-delay: 0.3s; }
.wave-col:nth-child(3) { height: 85%; animation-delay: 0.2s; }
.wave-col:nth-child(4) { height: 50%; animation-delay: 0.5s; }
.wave-col:nth-child(5) { height: 95%; animation-delay: 0.4s; }
.wave-col:nth-child(6) { height: 75%; animation-delay: 0.6s; }
.wave-col:nth-child(7) { height: 100%; animation-delay: 0.25s; }
.wave-col:nth-child(8) { height: 80%; animation-delay: 0.45s; }

@keyframes wave-anim {
  0% { transform: scaleY(0.6); opacity: 0.7; }
  100% { transform: scaleY(1); opacity: 1; }
}

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

.node-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(31, 41, 55, 0.5);
  border: 1px solid var(--border-color);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
}

.node-info {
  display: flex;
  align-items: center;
  gap: 8px;
}

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

.node-name {
  font-weight: 600;
  color: var(--text-primary);
}

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

/* Section Shared */
.section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 48px;
}

.section-tag {
  color: var(--accent-blue);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 8px;
  display: block;
}

.section-title {
  font-size: 2.1rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.section-desc {
  font-size: 1.02rem;
  color: var(--text-secondary);
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 34px 26px;
  transition: all 0.35s ease;
  position: relative;
}

.card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-glow);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.card-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-md);
  background: rgba(14, 165, 233, 0.1);
  border: 1px solid rgba(14, 165, 233, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-blue);
  margin-bottom: 20px;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.card-desc {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.6;
}

/* Ecosystem / Supported Services */
.eco-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 16px;
}

.eco-card {
  background: rgba(17, 24, 39, 0.6);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px 16px;
  text-align: center;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.eco-card:hover {
  border-color: var(--accent-blue);
  background: rgba(31, 41, 55, 0.7);
  transform: translateY(-3px);
}

.eco-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
}

.eco-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

.eco-badge {
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-green);
  font-weight: 600;
}

/* Pricing Grid */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  align-items: stretch;
}

.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: all 0.35s ease;
}

.pricing-card.popular {
  border: 2px solid var(--accent-blue);
  background: linear-gradient(180deg, rgba(31, 41, 55, 0.85) 0%, rgba(17, 24, 39, 0.95) 100%);
  box-shadow: 0 0 30px rgba(14, 165, 233, 0.2);
}

.popular-badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-primary);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.plan-name {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.plan-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
  min-height: 38px;
}

.plan-price {
  font-size: 2.3rem;
  font-weight: 800;
  margin-bottom: 20px;
  color: #fff;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.plan-price span {
  font-size: 0.88rem;
  font-weight: 400;
  color: var(--text-secondary);
}

.plan-price .price-subtext {
  font-size: 0.75rem;
  color: var(--accent-blue);
  display: block;
  font-weight: 500;
}

.plan-features {
  list-style: none;
  margin-bottom: 28px;
  flex-grow: 1;
}

.plan-features li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

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

/* 9 SEO Articles Visual Cards Grid Section (Placed Right Below Pricing) */
.articles-section {
  padding: 80px 0;
  background: rgba(17, 24, 39, 0.4);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  transition: all 0.35s ease;
  position: relative;
}

.article-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-blue);
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(14, 165, 233, 0.15);
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  font-size: 0.8rem;
}

.article-tag {
  background: rgba(14, 165, 233, 0.12);
  color: var(--accent-blue);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-weight: 600;
}

.article-date {
  color: var(--text-muted);
}

.article-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 12px;
  color: #fff;
}

.article-card-title a:hover {
  color: var(--accent-blue);
}

.article-excerpt {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent-blue);
  transition: gap 0.2s ease;
}

.article-link:hover {
  gap: 10px;
  color: #38bdf8;
}

/* SEO Subpage Reading Layout Styles */
.article-container {
  max-width: 900px;
  margin: 40px auto 80px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 44px;
}

.article-header {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
}

.article-title-main {
  font-size: 2.1rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
}

.article-info-bar {
  display: flex;
  align-items: center;
  gap: 20px;
  color: var(--text-muted);
  font-size: 0.88rem;
}

.article-body h2 {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--accent-blue);
  margin: 32px 0 16px;
  line-height: 1.35;
}

.article-body h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  margin: 24px 0 12px;
}

.article-body p {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 18px;
}

.article-body ul, .article-body ol {
  color: var(--text-secondary);
  padding-left: 24px;
  margin-bottom: 20px;
  line-height: 1.8;
}

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

.article-body blockquote {
  background: rgba(14, 165, 233, 0.08);
  border-left: 4px solid var(--accent-blue);
  padding: 16px 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 24px 0;
  color: var(--text-primary);
  font-style: italic;
}

.article-cta-box {
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.12) 0%, rgba(99, 102, 241, 0.12) 100%);
  border: 1px solid rgba(14, 165, 233, 0.3);
  border-radius: var(--radius-md);
  padding: 28px;
  text-align: center;
  margin: 40px 0 20px;
}

.article-cta-box h3 {
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 10px;
  color: #fff;
}

.article-cta-box p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

/* Testimonials */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
}

.testimonial-user {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

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

.user-info h4 {
  font-size: 0.95rem;
  font-weight: 700;
}

.user-info p {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.rating {
  color: var(--accent-amber);
  margin-bottom: 10px;
  font-size: 0.85rem;
}

.testimonial-text {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Accordion FAQ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

details {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all 0.3s ease;
}

details[open] {
  border-color: var(--accent-blue);
  background: var(--bg-card-hover);
}

summary {
  padding: 18px 22px;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  content: "+";
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--accent-blue);
  transition: transform 0.25s ease;
}

details[open] summary::after {
  content: "−";
}

.faq-content {
  padding: 0 22px 18px;
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.6;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  margin-top: 4px;
  padding-top: 14px;
}

/* Footer Section - STRICT REQUIREMENT: Only 4 Links */
.footer {
  margin-top: auto;
  background: #070a12;
  border-top: 1px solid var(--border-color);
  padding: 40px 0 30px;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  text-align: center;
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
}

.footer-nav-link {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.footer-nav-link:hover {
  color: var(--accent-blue);
}

.footer-copyright {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* Subpage Specific Styles */
.page-header {
  padding: 50px 0 35px;
  text-align: center;
  background: radial-gradient(circle at top, rgba(14, 165, 233, 0.08) 0%, rgba(11, 15, 25, 0) 70%);
  border-bottom: 1px solid var(--border-color);
}

.page-title {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 10px;
}

.page-desc {
  color: var(--text-secondary);
  font-size: 1rem;
}

.content-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px;
  margin: 36px 0 70px;
}

.content-box h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--accent-blue);
  margin: 26px 0 12px;
}

.content-box h2:first-child {
  margin-top: 0;
}

.content-box p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 14px;
  font-size: 0.95rem;
}

.content-box ul {
  color: var(--text-secondary);
  padding-left: 20px;
  margin-bottom: 14px;
  line-height: 1.8;
}

.sitemap-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-top: 18px;
}

.sitemap-card {
  background: rgba(17, 24, 39, 0.6);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
}

.sitemap-card h3 {
  font-size: 1.05rem;
  color: var(--accent-blue);
  margin-bottom: 12px;
}

.sitemap-card ul {
  list-style: none;
  padding-left: 0;
}

.sitemap-card li {
  margin-bottom: 8px;
}

.sitemap-card a {
  color: var(--text-secondary);
  font-size: 0.92rem;
}

.sitemap-card a:hover {
  color: #fff;
  text-decoration: underline;
}

/* Responsive Styles */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .hero-left {
    text-align: center;
  }

  .hero-cta {
    justify-content: center;
  }

  .hero-features-bar {
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.1rem;
  }

  .nav-links {
    display: none;
  }

  .section {
    padding: 50px 0;
  }

  .section-title {
    font-size: 1.7rem;
  }

  .footer-nav {
    gap: 16px;
    flex-direction: column;
  }

  .article-container {
    padding: 24px;
  }
}