/* ==========================================
   Design System & Theme Tokens (飞鸟云官网)
   ========================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700&display=swap');

:root {
  /* Colors */
  --bg-main: #0a0b0e;
  --bg-card: #12141a;
  --bg-card-hover: #181c26;
  --border-color: rgba(255, 255, 255, 0.05);
  --border-hover: rgba(59, 130, 246, 0.3);
  
  --accent-blue: #3b82f6;
  --accent-blue-rgb: 59, 130, 246;
  --accent-purple: #8b5cf6;
  --accent-cyan: #06b6d4;
  --accent-green: #10b981;
  --accent-red: #ef4444;
  
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  /* Fonts */
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-headings: 'Outfit', var(--font-main);
  
  /* Transitions */
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s ease;
}

/* ==========================================
   Base Styles
   ========================================== */

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-family: var(--font-main);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-headings);
  font-weight: 600;
  letter-spacing: -0.02em;
}

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

button {
  background: none;
  border: none;
  font-family: inherit;
  cursor: pointer;
}

ul {
  list-style: none;
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-main);
}

::-webkit-scrollbar-thumb {
  background: #1f2937;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-blue);
}

/* ==========================================
   Utility Classes
   ========================================== */

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 8rem 0;
  position: relative;
}

.text-center {
  text-align: center;
}

.text-gradient {
  background: linear-gradient(135deg, #ffffff 30%, #a1a1aa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.accent-text-gradient {
  background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.8rem;
  font-weight: 500;
  border-radius: 9999px;
  transition: var(--transition-smooth);
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  gap: 0.5rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-purple) 100%);
  color: #ffffff;
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(59, 130, 246, 0.5), 0 0 10px rgba(139, 92, 246, 0.3);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.section-desc {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 4rem auto;
  font-size: 1.1rem;
}

/* ==========================================
   Header & Navigation (No Logo)
   ========================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(10, 11, 14, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-smooth);
}

.header-scrolled {
  background: rgba(10, 11, 14, 0.85);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 4.5rem;
}

/* Align links left-ish/center since there is no logo */
.nav-menu {
  display: flex;
  gap: 2.2rem;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 0.5rem 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
  transition: var(--transition-smooth);
}

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

.mobile-nav-toggle {
  display: none;
  font-size: 1.5rem;
  color: var(--text-primary);
}

/* ==========================================
   Hero Section
   ========================================== */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 6rem;
  position: relative;
  overflow: hidden;
}

#particle-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin: 0 auto;
}

.badge-glow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(59, 130, 246, 0.08);
  border: 1px solid rgba(59, 130, 246, 0.2);
  color: #60a5fa;
  padding: 0.4rem 1rem;
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 2rem;
  box-shadow: 0 0 15px rgba(59, 130, 246, 0.1);
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent-cyan);
  box-shadow: 0 0 8px var(--accent-cyan);
  animation: pulse-glow 2s infinite;
}

@keyframes pulse-glow {
  0% { transform: scale(0.9); opacity: 0.5; }
  50% { transform: scale(1.2); opacity: 1; box-shadow: 0 0 12px var(--accent-cyan); }
  100% { transform: scale(0.9); opacity: 0.5; }
}

.hero h1 {
  font-size: 4rem;
  line-height: 1.15;
  margin-bottom: 1.5rem;
  font-weight: 700;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 3rem;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
}

/* ==========================================
   Core Advantages (核心优势)
   ========================================== */

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.adv-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 2.5rem 2rem;
  border-radius: 1.25rem;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.adv-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(800px circle at var(--x, 0px) var(--y, 0px), rgba(59, 130, 246, 0.06), transparent 40%);
  z-index: 1;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.5s ease;
}

.adv-card:hover::before {
  opacity: 1;
}

.adv-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-hover);
  box-shadow: 0 10px 30px rgba(59, 130, 246, 0.05);
}

.adv-icon-wrapper {
  width: 3.5rem;
  height: 3.5rem;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--accent-blue);
  transition: var(--transition-smooth);
}

.adv-card:hover .adv-icon-wrapper {
  color: #ffffff;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  border-color: transparent;
  box-shadow: 0 0 15px rgba(59, 130, 246, 0.3);
}

.adv-card h3 {
  font-size: 1.3rem;
  margin-bottom: 0.8rem;
  position: relative;
  z-index: 2;
}

.adv-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  position: relative;
  z-index: 2;
}

/* ==========================================
   Pricing Plans (套餐价格)
   ========================================== */

.pricing-toggle-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3.5rem;
}

.toggle-label {
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.toggle-label.active {
  color: var(--text-primary);
}

.pricing-switch {
  width: 4.5rem;
  height: 2.2rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: 9999px;
  position: relative;
  display: flex;
  align-items: center;
  padding: 0.2rem;
}

.switch-knob {
  width: 1.7rem;
  height: 1.7rem;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  border-radius: 50%;
  position: absolute;
  left: 0.2rem;
  transition: var(--transition-smooth);
  box-shadow: 0 2px 10px rgba(59, 130, 246, 0.3);
}

.pricing-switch.yearly .switch-knob {
  left: calc(100% - 1.9rem);
}

.discount-badge {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  color: var(--accent-green);
  padding: 0.2rem 0.6rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2.5rem;
  align-items: flex-start;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 1.5rem;
  padding: 3rem 2.5rem;
  position: relative;
  transition: var(--transition-smooth);
}

.pricing-card:hover {
  transform: translateY(-5px);
  border-color: rgba(255, 255, 255, 0.1);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

.pricing-card.popular {
  border-color: var(--accent-blue);
  box-shadow: 0 0 30px rgba(59, 130, 246, 0.15);
}

.pricing-card.popular::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 150px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-blue), var(--accent-purple), transparent);
}

.popular-tag {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  color: #ffffff;
  padding: 0.3rem 0.8rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.pricing-card h3 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.pricing-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

.price-container {
  display: flex;
  align-items: baseline;
  margin-bottom: 2rem;
}

.price-currency {
  font-size: 1.8rem;
  font-weight: 700;
}

.price-val {
  font-size: 3.5rem;
  font-weight: 700;
  font-family: var(--font-headings);
  line-height: 1;
}

.price-period {
  color: var(--text-secondary);
  margin-left: 0.5rem;
  font-size: 1rem;
}

.pricing-divider {
  border: 0;
  border-top: 1px solid var(--border-color);
  margin: 1.5rem 0;
}

.pricing-features {
  margin-bottom: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

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

.pricing-features li.disabled {
  color: var(--text-muted);
  text-decoration: line-through;
}

.pricing-features li.disabled svg {
  color: var(--text-muted);
}

.pricing-card .btn {
  width: 100%;
}

/* ==========================================
   Node Status Dashboard (节点延迟和状态)
   ========================================== */

.status-dashboard {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 1.5rem;
  padding: 2.5rem;
  max-width: 900px;
  margin: 0 auto;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.dashboard-summary {
  display: flex;
  gap: 1.5rem;
}

.summary-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.summary-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.summary-dot.online {
  background: var(--accent-green);
  box-shadow: 0 0 8px var(--accent-green);
}

.btn-speedtest {
  padding: 0.6rem 1.2rem;
  font-size: 0.85rem;
  border-radius: 0.5rem;
}

/* Scanning / Loading radar effect */
.btn-speedtest.scanning svg {
  animation: rotate 1.5s linear infinite;
}

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

.nodes-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.node-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 1.5rem;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  transition: var(--transition-smooth);
}

.node-row:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.1);
  transform: translateX(4px);
}

.node-info {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

.node-flag {
  width: 2rem;
  height: 1.5rem;
  object-fit: cover;
  border-radius: 0.25rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.node-name {
  font-weight: 500;
  font-size: 1rem;
}

.node-type {
  background: rgba(59, 130, 246, 0.1);
  color: var(--accent-blue);
  padding: 0.1rem 0.5rem;
  border-radius: 0.25rem;
  font-size: 0.75rem;
  font-weight: 600;
}

.node-status-area {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.node-indicator {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 6px var(--accent-green);
}

.node-ping-box {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  width: 90px;
  justify-content: flex-end;
}

.node-ping {
  font-family: var(--font-headings);
  font-weight: 600;
  font-size: 0.95rem;
}

.node-ping.ping-low { color: var(--accent-green); }
.node-ping.ping-mid { color: var(--accent-cyan); }
.node-ping.ping-high { color: var(--accent-purple); }

.node-line-canvas {
  flex-grow: 1;
  max-width: 150px;
  height: 20px;
  margin: 0 2rem;
}

@media (max-width: 768px) {
  .node-line-canvas {
    display: none;
  }
}

/* ==========================================
   Knowledge Base & Tutorials (知识库与教程)
   ========================================== */

.kb-search-container {
  max-width: 500px;
  margin: 0 auto 3.5rem auto;
  position: relative;
}

.kb-search-input {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 1rem 1.5rem 1rem 3rem;
  border-radius: 9999px;
  color: var(--text-primary);
  font-size: 1rem;
  transition: var(--transition-smooth);
}

.kb-search-input:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 15px rgba(59, 130, 246, 0.15);
}

.kb-search-icon {
  position: absolute;
  left: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

.kb-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.kb-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  padding: 2rem;
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.kb-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: 0 12px 30px rgba(59, 130, 246, 0.05);
}

.kb-tag {
  background: rgba(139, 92, 246, 0.1);
  color: var(--accent-purple);
  font-size: 0.75rem;
  padding: 0.2rem 0.6rem;
  border-radius: 0.25rem;
  align-self: flex-start;
  margin-bottom: 1rem;
  font-weight: 500;
}

.kb-card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.8rem;
  line-height: 1.4;
}

.kb-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.kb-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border-color);
  padding-top: 1rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.kb-link {
  display: flex;
  align-items: center;
  gap: 0.2rem;
  color: var(--accent-blue);
  font-weight: 500;
}

.kb-card:hover .kb-link {
  color: #60a5fa;
}

/* ==========================================
   Customer Reviews (用户评价)
   ========================================== */

.reviews-marquee-container {
  overflow: hidden;
  position: relative;
  width: 100%;
  padding: 1.5rem 0;
}

/* Left and Right fade out overlays */
.reviews-marquee-container::before,
.reviews-marquee-container::after {
  content: '';
  position: absolute;
  top: 0;
  width: 15%;
  height: 100%;
  z-index: 2;
  pointer-events: none;
}

.reviews-marquee-container::before {
  left: 0;
  background: linear-gradient(90deg, var(--bg-main) 0%, transparent 100%);
}

.reviews-marquee-container::after {
  right: 0;
  background: linear-gradient(270deg, var(--bg-main) 0%, transparent 100%);
}

.marquee-track {
  display: flex;
  gap: 2rem;
  width: max-content;
  animation: marquee-animation 30s linear infinite;
}

.marquee-track:hover {
  animation-play-state: paused;
}

@keyframes marquee-animation {
  0% { transform: translateX(0); }
  100% { transform: translateX(calc(-50% - 1rem)); }
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  padding: 2rem;
  width: 350px;
  flex-shrink: 0;
  transition: var(--transition-smooth);
}

.review-card:hover {
  border-color: rgba(255, 255, 255, 0.1);
  background: var(--bg-card-hover);
}

.stars-row {
  color: #fbbf24; /* Amber star color */
  display: flex;
  gap: 0.2rem;
  margin-bottom: 1rem;
}

.review-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  min-height: 4.5rem;
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.user-avatar {
  width: 2.8rem;
  height: 2.8rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
  color: #ffffff;
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.2);
}

.user-meta h4 {
  font-size: 0.95rem;
}

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

/* ==========================================
   FAQ Accordion (常见问题)
   ========================================== */

.faq-container {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  overflow: hidden;
  transition: var(--transition-smooth);
}

.faq-item:hover {
  border-color: rgba(255, 255, 255, 0.1);
}

.faq-header {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem;
  text-align: left;
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text-primary);
  background: none;
  transition: var(--transition-fast);
}

.faq-header:hover {
  background: rgba(255, 255, 255, 0.01);
}

.faq-icon-arrow {
  color: var(--text-secondary);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  flex-shrink: 0;
  margin-left: 1rem;
}

.faq-item.active .faq-icon-arrow {
  transform: rotate(180deg);
  color: var(--accent-blue);
}

.faq-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-content-inner {
  padding: 0 1.5rem 1.5rem 1.5rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
  border-top: 1px solid transparent;
  line-height: 1.7;
}

.faq-item.active .faq-content-inner {
  border-color: rgba(255, 255, 255, 0.02);
}

/* ==========================================
   Footer
   ========================================== */

.footer {
  border-top: 1px solid var(--border-color);
  padding: 5rem 0 3rem 0;
  background: #07080a;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 4rem;
  margin-bottom: 4rem;
}

.footer-brand h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  max-width: 320px;
  margin-bottom: 1.5rem;
}

.footer-col h4 {
  font-size: 1rem;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.footer-links a:hover {
  color: var(--accent-blue);
  transform: translateX(2px);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border-color);
  padding-top: 2rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  flex-wrap: wrap;
  gap: 1rem;
}

/* ==========================================
   Article Pages Specific Styling
   ========================================== */

.article-header {
  position: static; /* Simple local positioning for article templates */
  background: rgba(10, 11, 14, 0.9);
}

.article-body-wrapper {
  padding-top: 8rem;
  padding-bottom: 8rem;
  max-width: 800px;
  margin: 0 auto;
}

.back-to-home {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--accent-blue);
  font-size: 0.95rem;
  font-weight: 500;
  margin-bottom: 2rem;
  transition: var(--transition-smooth);
}

.back-to-home:hover {
  transform: translateX(-4px);
  color: #60a5fa;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.article-title {
  font-size: 3rem;
  line-height: 1.25;
  margin-bottom: 2.5rem;
  font-weight: 700;
}

.article-content {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.article-content p {
  margin-bottom: 1.8rem;
}

.article-content h2 {
  font-size: 1.8rem;
  color: var(--text-primary);
  margin-top: 3rem;
  margin-bottom: 1.2rem;
  font-weight: 600;
}

.article-content h3 {
  font-size: 1.35rem;
  color: var(--text-primary);
  margin-top: 2.2rem;
  margin-bottom: 1rem;
}

.article-content ul, .article-content ol {
  margin-bottom: 1.8rem;
  padding-left: 1.5rem;
}

.article-content li {
  margin-bottom: 0.6rem;
}

.article-content code {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  padding: 0.2rem 0.4rem;
  border-radius: 0.25rem;
  font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.9em;
  color: #f472b6;
}

.article-content pre {
  background: #111827;
  border: 1px solid var(--border-color);
  padding: 1.5rem;
  border-radius: 0.75rem;
  overflow-x: auto;
  margin-bottom: 1.8rem;
}

.article-content pre code {
  background: none;
  border: none;
  padding: 0;
  color: #e5e7eb;
  font-size: 0.9rem;
}

.article-content blockquote {
  border-left: 4px solid var(--accent-blue);
  background: rgba(59, 130, 246, 0.05);
  padding: 1.5rem;
  border-radius: 0.5rem;
  font-style: italic;
  margin: 2rem 0;
}

.article-content blockquote p {
  margin-bottom: 0;
}

.article-content img {
  max-width: 100%;
  height: auto;
  border-radius: 0.75rem;
  border: 1px solid var(--border-color);
  margin: 2.5rem 0;
}

.article-footer-cta {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.1));
  border: 1px solid var(--border-hover);
  padding: 3rem;
  border-radius: 1.5rem;
  text-align: center;
  margin-top: 5rem;
}

.article-footer-cta h3 {
  font-size: 1.6rem;
  margin-bottom: 1rem;
}

.article-footer-cta p {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 2rem;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* ==========================================
   Responsive Breakpoints
   ========================================== */

@media (max-width: 1024px) {
  .hero h1 {
    font-size: 3rem;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 5rem 0;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .hero h1 {
    font-size: 2.5rem;
  }
  
  .hero-subtitle {
    font-size: 1.1rem;
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
    padding: 0 1rem;
  }
  
  .nav-menu {
    position: fixed;
    top: 4.5rem;
    left: -100%;
    width: 100%;
    height: calc(100vh - 4.5rem);
    background: var(--bg-main);
    flex-direction: column;
    gap: 0;
    align-items: center;
    padding-top: 3rem;
    transition: var(--transition-smooth);
    z-index: 999;
    border-top: 1px solid var(--border-color);
  }
  
  .nav-menu.open {
    left: 0;
  }
  
  .nav-link {
    width: 100%;
    text-align: center;
    padding: 1.5rem 0;
    font-size: 1.15rem;
    border-bottom: 1px solid var(--border-color);
  }
  
  .mobile-nav-toggle {
    display: block;
  }
  
  .header-actions {
    display: none; /* Hide top CTA on mobile header, it will be placed in mobile menu or section */
  }
  
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 450px;
    margin: 0 auto;
  }
  
  .status-dashboard {
    padding: 1.5rem;
  }
  
  .dashboard-header {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  
  .article-title {
    font-size: 2.2rem;
  }
}