/* ==========================================================================
   大哥云 (Dage Cloud) - Docs & Ecosystem 极客信赖路线
   Design System: Inspired by Next.js / Vercel / Tailwind CSS Design
   ========================================================================== */

:root {
  --bg-primary: #07090e;
  --bg-secondary: #0d111a;
  --bg-card: rgba(16, 22, 34, 0.7);
  --bg-card-hover: rgba(23, 31, 48, 0.85);
  --bg-terminal: #0b0f19;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(56, 189, 248, 0.35);
  --border-focus: rgba(99, 102, 241, 0.6);

  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --accent-cyan: #06b6d4;
  --accent-blue: #3b82f6;
  --accent-indigo: #6366f1;
  --accent-purple: #8b5cf6;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --glow-gradient: radial-gradient(circle at 50% 0%, rgba(56, 189, 248, 0.15), transparent 70%);
  --transition-smooth: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  line-height: 1.6;
  overflow-x: hidden;
  background: var(--bg-primary);
  min-height: 100vh;
}

/* Links */
a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-smooth);
}

/* Container */
.container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* Typography Helpers */
.font-mono {
  font-family: var(--font-mono);
}

.text-gradient {
  background: linear-gradient(135deg, #ffffff 20%, #94a3b8 70%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-gradient-cyan {
  background: linear-gradient(135deg, #38bdf8 0%, #818cf8 50%, #c084fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Background Grids & Canvas */
.canvas-bg-wrapper {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

#bg-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.65;
}

.grid-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 20%, black 40%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 20%, black 40%, transparent 80%);
}

.radial-glow-top {
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 1000px;
  height: 600px;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.18) 0%, rgba(99, 102, 241, 0.12) 35%, transparent 70%);
  filter: blur(80px);
  pointer-events: none;
}

/* Announcement Bar */
.announcement-bar {
  background: linear-gradient(90deg, rgba(6, 182, 212, 0.15), rgba(99, 102, 241, 0.2), rgba(16, 185, 129, 0.15));
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.85rem;
  padding: 0.5rem 1rem;
  text-align: center;
  position: relative;
  z-index: 60;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  backdrop-filter: blur(12px);
}

.announcement-badge {
  background: rgba(14, 165, 233, 0.25);
  color: #38bdf8;
  border: 1px solid rgba(56, 189, 248, 0.4);
  padding: 0.15rem 0.5rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.announcement-link {
  color: #e2e8f0;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-weight: 500;
}
.announcement-link:hover {
  color: #38bdf8;
}

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(7, 9, 14, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transition: var(--transition-smooth);
}

.navbar .container {
  max-width: 1420px;
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.25rem;
  gap: 1rem;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 1.2rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.02em;
  flex-shrink: 0;
  white-space: nowrap;
}

.brand-icon {
  width: 2.25rem;
  height: 2.25rem;
  background: linear-gradient(135deg, #0284c7, #6366f1);
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 15px rgba(56, 189, 248, 0.4);
  flex-shrink: 0;
}

.brand-version {
  font-size: 0.7rem;
  font-family: var(--font-mono);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-subtle);
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  color: var(--accent-cyan);
  white-space: nowrap;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(0.55rem, 1.2vw, 1.35rem);
  list-style: none;
  flex-shrink: 1;
}

.nav-link {
  color: var(--text-muted);
  font-size: 0.88rem;
  font-weight: 500;
  transition: var(--transition-smooth);
  position: relative;
  white-space: nowrap; /* 确保导航文字永远在同一行，绝不折行 */
  display: inline-block;
  letter-spacing: -0.01em;
}

.nav-link:hover, .nav-link.active {
  color: #ffffff;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent-cyan);
  border-radius: 2px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
  white-space: nowrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 0.5rem;
  transition: var(--transition-smooth);
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #0284c7 0%, #2563eb 50%, #4f46e5 100%);
  color: #ffffff;
  box-shadow: 0 4px 18px rgba(37, 99, 235, 0.35);
}
.btn-primary:hover {
  background: linear-gradient(135deg, #0369a1 0%, #1d4ed8 50%, #4338ca 100%);
  box-shadow: 0 6px 24px rgba(37, 99, 235, 0.5);
  transform: translateY(-1px);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.04);
  color: #e2e8f0;
  border: 1px solid var(--border-subtle);
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(255, 255, 255, 0.25);
  color: #ffffff;
  transform: translateY(-1px);
}

.btn-glow {
  position: relative;
  overflow: hidden;
}
.btn-glow::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.2) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.3s;
}
.btn-glow:hover::after {
  opacity: 1;
}

.btn-sm {
  padding: 0.4rem 0.85rem;
  font-size: 0.82rem;
}

.btn-lg {
  padding: 0.85rem 1.85rem;
  font-size: 1.05rem;
  border-radius: 0.6rem;
}

/* Mobile Menu Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  cursor: pointer;
  padding: 0.5rem;
}

/* Section Common */
.section {
  position: relative;
  z-index: 10;
  padding: 5.5rem 0;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3.5rem auto;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.25);
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  margin-bottom: 1rem;
}

.section-title {
  font-size: 2.35rem;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* Hero Section */
.hero-section {
  padding: 5.5rem 0 4rem 0;
  position: relative;
}

.hero-content {
  text-align: center;
  max-width: 920px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.95rem;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  font-size: 0.85rem;
  color: #cbd5e1;
  margin-bottom: 1.75rem;
  box-shadow: 0 0 20px rgba(6, 182, 212, 0.15);
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 850;
  line-height: 1.15;
  letter-spacing: -0.04em;
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 2.5rem;
  max-width: 780px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

/* Feature highlight pill row */
.hero-features-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-subtle);
  color: var(--text-dim);
  font-size: 0.88rem;
}

.hero-feature-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-muted);
}
.hero-feature-item svg {
  color: var(--accent-emerald);
}

/* Terminal Showcase in Hero */
.terminal-window {
  margin-top: 3.5rem;
  background: var(--bg-terminal);
  border: 1px solid var(--border-subtle);
  border-radius: 0.75rem;
  box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.8), 0 0 30px rgba(56, 189, 248, 0.1);
  overflow: hidden;
  text-align: left;
}

.terminal-header {
  background: rgba(255, 255, 255, 0.03);
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.terminal-dots {
  display: flex;
  gap: 0.45rem;
}
.terminal-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}
.dot-red { background: #ef4444; }
.dot-yellow { background: #f59e0b; }
.dot-green { background: #10b981; }

.terminal-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-dim);
}

.terminal-body {
  padding: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.8;
  color: #e2e8f0;
  max-height: 280px;
  overflow-y: auto;
}

.term-cmd { color: #38bdf8; }
.term-success { color: #34d399; }
.term-info { color: #818cf8; }
.term-meta { color: #94a3b8; }
.term-warn { color: #fbbf24; }

/* Open Source Cores Showcase Grid */
.cores-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-bottom: 3.5rem;
}

.core-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 0.75rem;
  padding: 1.5rem;
  position: relative;
  transition: var(--transition-smooth);
  backdrop-filter: blur(8px);
}

.core-card:hover {
  border-color: var(--border-glow);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
  box-shadow: 0 10px 30px -10px rgba(6, 182, 212, 0.2);
}

.core-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.core-icon-badge {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 0.5rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
}

.github-star-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-subtle);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  color: #fbbf24;
}

.core-name {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
  color: #ffffff;
}

.core-repo {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-cyan);
  margin-bottom: 0.75rem;
}

.core-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.55;
}

.core-protocol-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 1rem;
}

.tag-mini {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  background: rgba(255, 255, 255, 0.04);
  color: #94a3b8;
  padding: 0.15rem 0.45rem;
  border-radius: 3px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

/* Config Generator Interactive Playground */
.config-generator {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 0.85rem;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
}

.generator-tabs {
  display: flex;
  align-items: center;
  background: rgba(13, 17, 26, 0.95);
  border-bottom: 1px solid var(--border-subtle);
  overflow-x: auto;
}

.gen-tab {
  padding: 0.9rem 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  background: none;
  border: none;
  border-right: 1px solid var(--border-subtle);
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition-smooth);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.gen-tab:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.03);
}

.gen-tab.active {
  color: #38bdf8;
  background: rgba(6, 182, 212, 0.08);
  border-bottom-color: #38bdf8;
}

.generator-content {
  display: grid;
  grid-template-columns: 1fr;
}

@media (min-width: 900px) {
  .generator-content {
    grid-template-columns: 320px 1fr;
  }
}

.generator-sidebar {
  padding: 1.5rem;
  background: rgba(11, 15, 25, 0.6);
  border-right: 1px solid var(--border-subtle);
}

.gen-option-group {
  margin-bottom: 1.25rem;
}

.gen-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  margin-bottom: 0.5rem;
}

.gen-select, .gen-input {
  width: 100%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: #e2e8f0;
  padding: 0.6rem 0.8rem;
  border-radius: 0.4rem;
  font-size: 0.88rem;
  font-family: var(--font-mono);
  outline: none;
}
.gen-select:focus, .gen-input:focus {
  border-color: var(--accent-cyan);
}

.generator-editor {
  position: relative;
  background: #090d16;
  padding: 1.5rem;
}

.editor-actions {
  position: absolute;
  top: 1rem;
  right: 1rem;
  display: flex;
  gap: 0.5rem;
  z-index: 5;
}

.editor-code {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.7;
  color: #e2e8f0;
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 340px;
  overflow-y: auto;
}

/* Node Latency & Status Board */
.node-status-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

.node-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 0.75rem;
  padding: 1.25rem;
  position: relative;
  transition: var(--transition-smooth);
}

.node-card:hover {
  border-color: rgba(56, 189, 248, 0.4);
  transform: translateY(-2px);
  background: var(--bg-card-hover);
}

.node-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.node-region {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1rem;
}

.region-flag {
  font-size: 1.25rem;
}

.node-health-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 10px #10b981;
  position: relative;
}

.node-health-dot::before {
  content: '';
  position: absolute;
  top: -3px;
  left: -3px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 1px solid #10b981;
  animation: pulse-ring 2s infinite cubic-bezier(0.215, 0.61, 0.355, 1);
}

@keyframes pulse-ring {
  0% { transform: scale(0.6); opacity: 0.9; }
  100% { transform: scale(1.6); opacity: 0; }
}

.node-telemetry {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  margin: 0.9rem 0;
  padding: 0.6rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.telem-val {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.95rem;
  color: #38bdf8;
}

.telem-label {
  font-size: 0.7rem;
  color: var(--text-dim);
  text-transform: uppercase;
}

.node-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--text-dim);
}

.node-protocols {
  display: flex;
  gap: 0.35rem;
}

/* Pricing Section */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 1rem;
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition-smooth);
}

.pricing-card:hover {
  transform: translateY(-4px);
  border-color: rgba(56, 189, 248, 0.35);
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.6);
}

.pricing-card.popular {
  border-color: #38bdf8;
  background: linear-gradient(180deg, rgba(14, 165, 233, 0.1) 0%, rgba(13, 17, 26, 0.95) 100%);
  box-shadow: 0 0 40px -10px rgba(56, 189, 248, 0.25);
}

.popular-badge {
  position: absolute;
  top: -12px;
  right: 1.5rem;
  background: linear-gradient(90deg, #0284c7, #6366f1);
  color: #ffffff;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.pricing-plan-name {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.pricing-plan-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  min-height: 2.7rem;
  margin-bottom: 1.5rem;
}

.pricing-price-wrap {
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
  margin-bottom: 1.75rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.currency {
  font-size: 1.5rem;
  font-weight: 700;
  color: #e2e8f0;
}

.price-num {
  font-size: 2.85rem;
  font-weight: 850;
  letter-spacing: -0.04em;
  line-height: 1;
}

.price-period {
  color: var(--text-dim);
  font-size: 0.88rem;
}

.pricing-features-list {
  list-style: none;
  margin-bottom: 2rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.pricing-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.88rem;
  color: #cbd5e1;
}

.pricing-feature-item svg {
  color: var(--accent-emerald);
  flex-shrink: 0;
  margin-top: 2px;
}

/* Comparison / Core Advantages Section */
.comparison-table-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 1rem;
  overflow-x: auto;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
}

.comparison-table th, .comparison-table td {
  padding: 1.15rem 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.comparison-table th {
  background: rgba(13, 17, 26, 0.8);
  font-weight: 600;
  color: var(--text-muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.comparison-table th.highlight-col {
  color: #38bdf8;
  background: rgba(6, 182, 212, 0.1);
  border-left: 1px solid rgba(56, 189, 248, 0.2);
  border-right: 1px solid rgba(56, 189, 248, 0.2);
}

.comparison-table td.highlight-col {
  background: rgba(6, 182, 212, 0.04);
  border-left: 1px solid rgba(56, 189, 248, 0.15);
  border-right: 1px solid rgba(56, 189, 248, 0.15);
  color: #ffffff;
  font-weight: 500;
}

/* Advantages Grid */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-top: 3.5rem;
}

.adv-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 0.85rem;
  padding: 1.75rem;
  transition: var(--transition-smooth);
}

.adv-card:hover {
  border-color: rgba(99, 102, 241, 0.4);
  transform: translateY(-3px);
  background: var(--bg-card-hover);
}

.adv-icon-wrap {
  width: 3rem;
  height: 3rem;
  border-radius: 0.65rem;
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #818cf8;
  margin-bottom: 1.25rem;
}

.adv-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
  color: #ffffff;
}

.adv-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* FAQ Accordion */
.faq-grid {
  max-width: 840px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

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

.faq-item:hover {
  border-color: rgba(255, 255, 255, 0.15);
}

.faq-question {
  width: 100%;
  padding: 1.25rem 1.5rem;
  background: none;
  border: none;
  color: #ffffff;
  font-size: 1.05rem;
  font-weight: 600;
  text-align: left;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.faq-arrow {
  color: var(--text-dim);
  transition: transform 0.3s ease;
}

.faq-item.active .faq-arrow {
  transform: rotate(180deg);
  color: #38bdf8;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 1.5rem;
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 1.5rem 1.25rem 1.5rem;
}

/* User Reviews (Wall of Love) */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 0.85rem;
  padding: 1.75rem;
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.review-card:hover {
  border-color: rgba(56, 189, 248, 0.3);
  transform: translateY(-3px);
  background: var(--bg-card-hover);
}

.review-stars {
  display: flex;
  gap: 0.2rem;
  color: #fbbf24;
  margin-bottom: 1rem;
}

.review-text {
  font-size: 0.92rem;
  color: #cbd5e1;
  line-height: 1.65;
  margin-bottom: 1.5rem;
  font-style: italic;
}

.review-user {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 1rem;
}

.user-avatar {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 50%;
  background: linear-gradient(135deg, #3b82f6, #8b5cf6);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #ffffff;
  font-size: 0.95rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.user-info {
  display: flex;
  flex-direction: column;
}

.user-name {
  font-weight: 600;
  font-size: 0.95rem;
  color: #ffffff;
}

.user-role {
  font-size: 0.78rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

/* Call to Action Banner */
.cta-banner {
  margin-top: 3rem;
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.15) 0%, rgba(99, 102, 241, 0.2) 50%, rgba(16, 185, 129, 0.12) 100%);
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: 1.25rem;
  padding: 3.5rem 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 50px -10px rgba(14, 165, 233, 0.2);
}

.cta-banner-title {
  font-size: 2.2rem;
  font-weight: 850;
  margin-bottom: 1rem;
  letter-spacing: -0.03em;
}

.cta-banner-desc {
  font-size: 1.1rem;
  color: #cbd5e1;
  max-width: 650px;
  margin: 0 auto 2rem auto;
}

/* Footer */
.footer {
  position: relative;
  z-index: 10;
  background: #040609;
  border-top: 1px solid var(--border-subtle);
  padding: 4rem 0 2rem 0;
  font-size: 0.88rem;
  color: var(--text-dim);
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand-desc {
  color: var(--text-muted);
  line-height: 1.65;
  margin-top: 0.75rem;
  max-width: 320px;
}

.footer-col-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: #ffffff;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1.25rem;
}

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

.footer-link {
  color: var(--text-muted);
  transition: var(--transition-smooth);
}
.footer-link:hover {
  color: #38bdf8;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Docs Article Specific Styling */
.docs-header {
  padding: 4rem 0 2.5rem 0;
  border-bottom: 1px solid var(--border-subtle);
  background: radial-gradient(circle at 50% 0%, rgba(56, 189, 248, 0.08), transparent 70%);
}

.docs-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 1rem;
}

.docs-breadcrumb a {
  color: var(--text-muted);
}
.docs-breadcrumb a:hover {
  color: #38bdf8;
}

.docs-article-title {
  font-size: 2.5rem;
  font-weight: 850;
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

.docs-meta-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.25rem;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.docs-meta-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.docs-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  padding: 3rem 0;
}

@media (min-width: 1024px) {
  .docs-container {
    grid-template-columns: 260px 1fr;
  }
}

.docs-sidebar {
  position: sticky;
  top: 6rem;
  height: fit-content;
  max-height: calc(100vh - 8rem);
  overflow-y: auto;
  padding-right: 1rem;
  display: none;
}

@media (min-width: 1024px) {
  .docs-sidebar {
    display: block;
  }
}

.docs-toc-title {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #ffffff;
  margin-bottom: 1rem;
}

.docs-toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  font-size: 0.88rem;
  border-left: 1px solid var(--border-subtle);
  padding-left: 1rem;
}

.docs-toc-link {
  color: var(--text-dim);
  display: block;
  transition: var(--transition-smooth);
}
.docs-toc-link:hover, .docs-toc-link.active {
  color: #38bdf8;
  transform: translateX(3px);
}

.docs-content {
  font-size: 1.05rem;
  line-height: 1.85;
  color: #cbd5e1;
  max-width: 860px;
}

.docs-content h2 {
  font-size: 1.75rem;
  font-weight: 800;
  color: #ffffff;
  margin: 2.5rem 0 1rem 0;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  letter-spacing: -0.02em;
}

.docs-content h3 {
  font-size: 1.35rem;
  font-weight: 700;
  color: #f1f5f9;
  margin: 1.75rem 0 0.75rem 0;
}

.docs-content p {
  margin-bottom: 1.35rem;
}

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

.docs-content li {
  margin-bottom: 0.5rem;
}

.docs-content strong {
  color: #ffffff;
  font-weight: 700;
}

.docs-callout {
  background: rgba(14, 165, 233, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-left: 4px solid #38bdf8;
  padding: 1.25rem 1.5rem;
  border-radius: 0.5rem;
  margin: 1.75rem 0;
  color: #e2e8f0;
}

.docs-callout-warning {
  background: rgba(245, 158, 11, 0.08);
  border-color: rgba(245, 158, 11, 0.25);
  border-left-color: #f59e0b;
}

.docs-callout-title {
  font-weight: 700;
  font-size: 0.95rem;
  color: #ffffff;
  margin-bottom: 0.35rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.docs-pre-code {
  background: #090d16;
  border: 1px solid var(--border-subtle);
  border-radius: 0.5rem;
  padding: 1.25rem;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.7;
  color: #38bdf8;
  margin: 1.5rem 0;
}

.article-keywords-badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.5rem 0;
}

.keyword-badge {
  font-size: 0.8rem;
  padding: 0.25rem 0.65rem;
  border-radius: 4px;
  background: rgba(99, 102, 241, 0.12);
  color: #a5b4fc;
  border: 1px solid rgba(99, 102, 241, 0.25);
}

/* Article Cards Grid for Docs Index */
.docs-index-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.75rem;
  margin-top: 2.5rem;
}

.docs-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 0.85rem;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition-smooth);
}

.docs-card:hover {
  border-color: rgba(56, 189, 248, 0.4);
  transform: translateY(-3px);
  background: var(--bg-card-hover);
  box-shadow: 0 15px 35px -10px rgba(0,0,0,0.5);
}

.docs-card-cat {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-cyan);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  display: block;
}

.docs-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 0.75rem;
  color: #ffffff;
}

.docs-card-snippet {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.docs-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-dim);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 1rem;
}

.docs-read-link {
  color: #38bdf8;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

/* Responsive Breakpoints */
@media (max-width: 1280px) {
  .btn-nav-docs {
    display: none !important;
  }
}

@media (max-width: 1040px) {
  .nav-links {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
  .btn-nav-docs {
    display: none !important;
  }
}

@media (max-width: 900px) {
  .hero-title {
    font-size: 2.6rem;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 640px) {
  .hero-title {
    font-size: 2.1rem;
  }
  .section-title {
    font-size: 1.85rem;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .hero-actions .btn {
    width: 100%;
  }
}

/* Mobile Nav Drawer */
.mobile-nav-drawer {
  position: fixed;
  top: 4.25rem;
  left: 0;
  width: 100%;
  height: calc(100vh - 4.25rem);
  background: rgba(7, 9, 14, 0.96);
  backdrop-filter: blur(20px);
  z-index: 45;
  display: flex;
  flex-direction: column;
  padding: 2rem 1.5rem;
  gap: 1.5rem;
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.mobile-nav-drawer.open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav-item {
  font-size: 1.15rem;
  font-weight: 600;
  color: #e2e8f0;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
}