/* ==========================================================================
   快连vpn - Fresh Organic Nature SaaS Stylesheet
   Theme: Pastel Green Ecosystem / Tree Wallpaper / Nature Glow / Mobile-First
   ========================================================================== */

:root {
  /* Pastel Green & Ecosystem Palette */
  --bg-dark: #f3f8f5;
  --bg-card: #ffffff;
  --bg-card-hover: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.88);
  --border-color: rgba(16, 185, 129, 0.18);
  --border-glow: rgba(16, 185, 129, 0.4);

  --text-main: #064e3b;
  --text-muted: #274c3d;
  --text-dim: #52796f;

  /* Pastel Colors */
  --pastel-mint: #d1fae5;
  --pastel-emerald: #a7f3d0;
  --pastel-sage: #ecfdf5;
  --pastel-teal: #ccfbf1;
  --pastel-yellow: #fef3c7;
  --pastel-lime: #f7fee7;

  /* Accent Colors */
  --accent-green: #10b981;
  --accent-emerald: #059669;
  --accent-forest: #047857;
  --accent-teal: #0d9488;
  --accent-lime: #65a30d;

  --accent-gradient: linear-gradient(135deg, #059669 0%, #10b981 50%, #0d9488 100%);
  --accent-glow: 0 10px 30px rgba(16, 185, 129, 0.2);

  /* Fonts & Spacing */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 22px;
  --radius-xl: 30px;
  --radius-full: 9999px;

  --container-width: 1200px;
  --header-height: 72px;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-dark);
  /* Tree Wallpaper Pattern Background */
  background-image: 
    radial-gradient(circle at 50% 10%, rgba(16, 185, 129, 0.12) 0%, rgba(5, 150, 105, 0.04) 50%, transparent 80%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140' viewBox='0 0 140 140'%3E%3Cg fill='%23059669' fill-opacity='0.035'%3E%3Cpath d='M70 15 L88 50 L78 50 L96 80 L86 80 L105 112 L35 112 L54 80 L44 80 L62 50 L52 50 Z'/%3E%3Crect x='66' y='112' width='8' height='14' rx='2'/%3E%3C/g%3E%3C/svg%3E");
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

button, input {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

/* Utility Containers */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.section-padding {
  padding: 5rem 0;
}

.section-alt {
  background: linear-gradient(180deg, rgba(236, 253, 245, 0.4) 0%, rgba(209, 250, 229, 0.6) 50%, rgba(236, 253, 245, 0.4) 100%);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  position: relative;
}

@media (max-width: 768px) {
  .section-padding {
    padding: 3.5rem 0;
  }
}

.text-gradient {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  background: var(--pastel-mint);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--accent-forest);
  font-size: 0.875rem;
  font-weight: 700;
  width: fit-content;
  box-shadow: 0 2px 8px rgba(16, 185, 129, 0.1);
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-green);
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.7);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 1.85rem;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 0.975rem;
  cursor: pointer;
  transition: all var(--transition-normal);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #ffffff;
  box-shadow: 0 6px 20px rgba(5, 150, 105, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(5, 150, 105, 0.48);
  opacity: 0.96;
}

.btn-secondary {
  background: #ffffff;
  border-color: rgba(16, 185, 129, 0.3);
  color: var(--accent-forest);
  box-shadow: 0 3px 10px rgba(16, 185, 129, 0.08);
}

.btn-secondary:hover {
  background: var(--pastel-sage);
  border-color: var(--accent-green);
  color: var(--accent-forest);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(16, 185, 129, 0.16);
}

/* Section Header */
.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 3.5rem auto;
}

.section-header h2 {
  font-size: 2.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-top: 0.85rem;
  margin-bottom: 1rem;
  line-height: 1.25;
  color: var(--accent-forest);
}

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

@media (max-width: 768px) {
  .section-header h2 {
    font-size: 1.8rem;
  }
  .section-header p {
    font-size: 0.95rem;
  }
}

/* Header Navbar */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 4px 20px rgba(16, 185, 129, 0.05);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--accent-forest);
}

.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 900;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.4);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
}

.nav-link {
  font-size: 0.925rem;
  color: var(--text-muted);
  font-weight: 600;
  padding: 0.5rem 0.25rem;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--accent-forest);
  cursor: pointer;
  padding: 0.5rem;
}

@media (max-width: 992px) {
  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: #ffffff;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 12px 35px rgba(5, 150, 105, 0.12);
    flex-direction: column;
    padding: 1.5rem;
    gap: 1.25rem;
    transform: translateY(-150%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
  }

  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .mobile-toggle {
    display: block;
  }
}

/* Hero Section with Tree Wallpaper Backdrop */
.hero-section {
  padding: 5rem 0 5.5rem 0;
  position: relative;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: 0%;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 450px;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.2) 0%, rgba(167, 243, 208, 0.25) 40%, rgba(209, 250, 229, 0.1) 70%, transparent 100%);
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content h1 {
  font-size: 3.35rem;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-top: 1.25rem;
  margin-bottom: 1.25rem;
  color: var(--accent-forest);
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  line-height: 1.6;
}

.hero-ctas {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-value {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--accent-forest);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* Hero Network Dashboard (Right Visual with Nature Frame) */
.dashboard-card {
  background: #ffffff;
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: var(--radius-lg);
  padding: 1.65rem;
  box-shadow: 0 20px 50px rgba(5, 150, 105, 0.12), 0 4px 15px rgba(0, 0, 0, 0.03);
  position: relative;
  overflow: hidden;
}

.dash-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

.dash-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--accent-forest);
}

.dash-status-pill {
  font-size: 0.75rem;
  background: var(--pastel-mint);
  color: var(--accent-forest);
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 700;
}

.dash-nodes-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.85rem;
  margin-bottom: 1.25rem;
}

.node-item {
  background: var(--pastel-sage);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all var(--transition-fast);
}

.node-item:hover {
  border-color: var(--accent-green);
  background: #ffffff;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.15);
}

.node-info {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.node-flag {
  font-size: 1.2rem;
}

.node-name {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--accent-forest);
}

.node-ping {
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--accent-green);
  font-weight: 800;
}

.dash-wave-container {
  background: var(--pastel-sage);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  position: relative;
}

.dash-wave-title {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.dash-svg-graph {
  width: 100%;
  height: 70px;
  stroke-dasharray: 400;
  stroke-dashoffset: 0;
  animation: pulseLine 6s linear infinite;
}

@keyframes pulseLine {
  0% { stroke-dashoffset: 400; }
  100% { stroke-dashoffset: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .dash-svg-graph {
    animation: none;
  }
}

@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .hero-content h1 {
    font-size: 2.35rem;
  }
}

/* Bento Grid Features with Pastel Green Accent Styling */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.bento-card {
  background: #ffffff;
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 18px rgba(5, 150, 105, 0.04);
}

.bento-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--accent-gradient);
}

.bento-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-green);
  box-shadow: 0 14px 35px rgba(5, 150, 105, 0.15);
}

.bento-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-md);
  background: var(--pastel-mint);
  border: 1px solid rgba(16, 185, 129, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-forest);
  margin-bottom: 1.25rem;
  box-shadow: 0 4px 10px rgba(16, 185, 129, 0.12);
}

.bento-card h3 {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 0.65rem;
  color: var(--accent-forest);
}

.bento-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

@media (max-width: 992px) {
  .bento-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .bento-grid {
    grid-template-columns: 1fr;
  }
}

/* Streaming & AI Section (Pastel Green & Mint Cards) */
.ai-stream-layout {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem;
}

.ai-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  padding: 2.25rem 2rem;
  box-shadow: 0 6px 22px rgba(5, 150, 105, 0.05);
}

.ai-card:nth-child(1) {
  background: linear-gradient(135deg, #ffffff 0%, #ecfdf5 100%);
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.ai-card:nth-child(2) {
  background: linear-gradient(135deg, #ffffff 0%, #f0fdf4 100%);
  border: 1px solid rgba(13, 148, 136, 0.25);
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.5rem;
}

.tag-item {
  background: #ffffff;
  border: 1px solid rgba(16, 185, 129, 0.25);
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--accent-forest);
  box-shadow: 0 2px 6px rgba(16, 185, 129, 0.06);
  transition: all var(--transition-fast);
}

.tag-item:hover {
  border-color: var(--accent-green);
  background: var(--pastel-mint);
  color: var(--accent-forest);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.15);
}

@media (max-width: 768px) {
  .ai-stream-layout {
    grid-template-columns: 1fr;
  }
}

/* Pricing Section */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
  align-items: stretch;
}

.pricing-card {
  background: #ffffff;
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: var(--radius-xl);
  padding: 2.25rem 1.75rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all var(--transition-normal);
  box-shadow: 0 4px 20px rgba(5, 150, 105, 0.04);
}

.pricing-card.featured {
  border: 2px solid var(--accent-green);
  background: linear-gradient(180deg, #ffffff 0%, #ecfdf5 100%);
  box-shadow: 0 16px 45px rgba(16, 185, 129, 0.22);
  transform: scale(1.03);
}

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-gradient);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 800;
  padding: 0.3rem 1.2rem;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.35);
}

.pricing-name {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  color: var(--accent-forest);
}

.pricing-price {
  font-size: 2.5rem;
  font-weight: 900;
  margin-bottom: 0.25rem;
  color: var(--accent-forest);
}

.pricing-price span {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 500;
}

.pricing-sub {
  font-size: 0.875rem;
  color: var(--text-dim);
  margin-bottom: 1.5rem;
}

.pricing-features {
  list-style: none;
  margin-bottom: 2rem;
  flex: 1;
}

.pricing-features li {
  font-size: 0.925rem;
  color: var(--text-muted);
  padding: 0.5rem 0;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

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

@media (max-width: 992px) {
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 450px;
    margin: 0 auto;
  }
  .pricing-card.featured {
    transform: none;
  }
}

/* Blog Cards (3x3 Grid) */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.blog-card {
  background: #ffffff;
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
  box-shadow: 0 4px 16px rgba(5, 150, 105, 0.04);
}

.blog-card:hover {
  border-color: var(--accent-green);
  box-shadow: 0 14px 35px rgba(16, 185, 129, 0.16);
  transform: translateY(-4px);
}

.blog-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-bottom: 0.85rem;
}

.blog-cat {
  color: var(--accent-forest);
  font-weight: 700;
  background: var(--pastel-mint);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.blog-card h3 {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 0.75rem;
  line-height: 1.35;
  color: var(--accent-forest);
}

.blog-card h3 a:hover {
  color: var(--accent-green);
}

.blog-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 1.25rem;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-link {
  font-size: 0.875rem;
  font-weight: 800;
  color: var(--accent-forest);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.blog-link:hover {
  gap: 0.55rem;
  color: var(--accent-green);
}

@media (max-width: 992px) {
  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .blog-grid {
    grid-template-columns: 1fr;
  }
}

/* Testimonials */
.testi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.testi-card {
  background: #ffffff;
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: 0 4px 16px rgba(5, 150, 105, 0.04);
}

.testi-user {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.avatar-placeholder {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #fff;
  font-size: 0.95rem;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.user-info h4 {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--accent-forest);
}

.user-info p {
  font-size: 0.775rem;
  color: var(--text-dim);
}

.testi-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

@media (max-width: 992px) {
  .testi-grid {
    grid-template-columns: 1fr;
  }
}

/* FAQ Accordion */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: #ffffff;
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-fast);
  box-shadow: 0 2px 8px rgba(5, 150, 105, 0.03);
}

.faq-item.active {
  border-color: var(--accent-green);
  box-shadow: 0 6px 22px rgba(16, 185, 129, 0.12);
}

.faq-question {
  width: 100%;
  padding: 1.25rem 1.5rem;
  background: none;
  border: none;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--accent-forest);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}

.faq-icon {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-fast);
  color: var(--accent-green);
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
  background: var(--pastel-sage);
}

.faq-answer-inner {
  padding: 1.25rem 1.5rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  border-top: 1px solid var(--border-color);
}

/* Standalone & Blog Detail Article Layout */
.article-container {
  max-width: 860px;
  margin: 0 auto;
  padding: 3rem 1.25rem 5rem 1.25rem;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 2rem;
}

.breadcrumb a:hover {
  color: var(--accent-green);
}

.article-header {
  margin-bottom: 3rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 2rem;
}

.article-header h1 {
  font-size: 2.4rem;
  font-weight: 900;
  line-height: 1.25;
  margin-top: 0.75rem;
  margin-bottom: 1rem;
  color: var(--accent-forest);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.875rem;
  color: var(--text-dim);
}

.article-body {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.8;
}

.article-body h2 {
  font-size: 1.65rem;
  font-weight: 800;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  color: var(--accent-forest);
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
}

.article-body h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  color: #065f46;
}

.article-body p {
  margin-bottom: 1.35rem;
}

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

.article-body li {
  margin-bottom: 0.5rem;
}

.article-body code {
  background: var(--pastel-mint);
  color: var(--accent-forest);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.9em;
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.article-body blockquote {
  border-left: 4px solid var(--accent-green);
  background: var(--pastel-sage);
  padding: 1rem 1.25rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 1.5rem;
  color: var(--accent-forest);
  font-weight: 600;
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0 2rem 0;
  font-size: 0.95rem;
  overflow-x: auto;
  display: block;
}

.article-table th, .article-table td {
  padding: 0.75rem 1rem;
  border: 1px solid rgba(16, 185, 129, 0.2);
  text-align: left;
}

.article-table th {
  background: var(--pastel-mint);
  color: var(--accent-forest);
  font-weight: 800;
}

.callout-cta {
  background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  text-align: center;
  margin: 2.5rem 0;
  box-shadow: 0 4px 18px rgba(16, 185, 129, 0.1);
}

.callout-cta h3 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  color: var(--accent-forest);
}

.callout-cta p {
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
  color: var(--text-muted);
}

.related-posts {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
}

.related-posts h3 {
  font-size: 1.3rem;
  margin-bottom: 1.5rem;
  color: var(--accent-forest);
}

/* Site Footer */
.site-footer {
  background: var(--pastel-sage);
  border-top: 1px solid var(--border-color);
  padding: 4rem 0 2rem 0;
  margin-top: auto;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 0.85rem;
  max-width: 300px;
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 800;
  margin-bottom: 1.25rem;
  color: var(--accent-forest);
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-col a {
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 600;
}

.footer-col a:hover {
  color: var(--accent-green);
}

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

.footer-recommend {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.footer-recommend span {
  color: var(--text-muted);
  font-weight: 700;
}

.footer-recommend a {
  color: var(--accent-forest);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-size: 0.85rem;
  font-weight: 700;
  transition: color var(--transition-fast);
}

.footer-recommend a:hover {
  color: var(--accent-green);
}

@media (max-width: 992px) {
  .footer-top {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .footer-top {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}