/* ==========================================================================
   喵喵机场 (MiaoCloud Network) - Geek Terminal & High-Tech Obsidian Theme
   ========================================================================== */

:root {
  --bg-primary: #07090e;
  --bg-secondary: #0d111a;
  --bg-card: rgba(16, 22, 34, 0.75);
  --bg-card-hover: rgba(24, 32, 48, 0.85);
  --border-color: rgba(0, 243, 255, 0.15);
  --border-glow: rgba(0, 243, 255, 0.4);
  
  --color-cyan: #00f3ff;
  --color-green: #00ff66;
  --color-purple: #9d4edd;
  --color-blue: #3a86ff;
  --color-amber: #ffbe0b;
  --color-rose: #ff0055;
  
  --text-main: #f0f4f8;
  --text-muted: #8a99ad;
  --text-dim: #5c6b73;
  
  --font-mono: "Fira Code", "JetBrains Mono", Consolas, "Courier New", monospace;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;

  --shadow-neon: 0 0 25px rgba(0, 243, 255, 0.25);
  --shadow-green: 0 0 25px rgba(0, ff, 102, 0.25);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
}

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

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

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

/* Background Canvas */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
  opacity: 0.85;
}

/* Top Announcement Banner */
.top-announcement {
  background: linear-gradient(90deg, rgba(157, 78, 221, 0.9), rgba(0, 243, 255, 0.9));
  color: #050811;
  font-size: 0.88rem;
  font-weight: 700;
  padding: 8px 16px;
  text-align: center;
  position: relative;
  z-index: 101;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  box-shadow: 0 2px 15px rgba(0, 243, 255, 0.4);
}

.top-announcement .badge-pulse {
  background: #050811;
  color: var(--color-cyan);
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  animation: pulse 2s infinite;
}

.top-announcement a {
  color: #050811;
  text-decoration: underline;
  margin-left: 8px;
  font-weight: 800;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(0, 243, 255, 0.7); }
  70% { box-shadow: 0 0 0 8px rgba(0, 243, 255, 0); }
  100% { box-shadow: 0 0 0 0 rgba(0, 243, 255, 0); }
}

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 9, 14, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  padding: 14px 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-main);
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.5px;
}

.nav-brand .logo-icon {
  width: 36px;
  height: 36px;
  background: radial-gradient(circle, var(--color-cyan) 0%, var(--bg-primary) 80%);
  border: 1.5px solid var(--color-cyan);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-cyan);
  font-family: var(--font-mono);
  font-weight: bold;
  box-shadow: 0 0 10px rgba(0, 243, 255, 0.4);
}

.nav-brand span.ver {
  font-size: 0.7rem;
  font-family: var(--font-mono);
  background: rgba(0, 243, 255, 0.1);
  color: var(--color-cyan);
  border: 1px solid rgba(0, 243, 255, 0.3);
  padding: 2px 6px;
  border-radius: 4px;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 24px;
  align-items: center;
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.93rem;
  font-weight: 500;
  transition: all 0.25s ease;
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: var(--color-cyan);
  text-shadow: 0 0 8px rgba(0, 243, 255, 0.5);
}

.nav-actions {
  display: flex;
  gap: 12px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid transparent;
  font-family: var(--font-sans);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-cyan), #00a8ff);
  color: #050811;
  box-shadow: 0 0 15px rgba(0, 243, 255, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 25px rgba(0, 243, 255, 0.7);
  filter: brightness(1.1);
}

.btn-secondary {
  background: rgba(0, 243, 255, 0.06);
  color: var(--color-cyan);
  border: 1px solid rgba(0, 243, 255, 0.3);
}

.btn-secondary:hover {
  background: rgba(0, 243, 255, 0.15);
  border-color: var(--color-cyan);
  color: #ffffff;
  box-shadow: 0 0 15px rgba(0, 243, 255, 0.2);
}

.btn-outline {
  background: transparent;
  color: var(--text-main);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-outline:hover {
  border-color: var(--color-cyan);
  color: var(--color-cyan);
}

/* Layout Containers */
.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

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

.section-header {
  text-align: center;
  max-width: 750px;
  margin: 0 auto 60px auto;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-cyan);
  background: rgba(0, 243, 255, 0.08);
  border: 1px solid rgba(0, 243, 255, 0.25);
  padding: 4px 12px;
  border-radius: 30px;
  margin-bottom: 14px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text-main);
  margin-bottom: 14px;
}

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

/* Hero Section */
.hero {
  padding: 70px 0 100px 0;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
}

.hero-content {
  max-width: 650px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 255, 102, 0.1);
  border: 1px solid rgba(0, 255, 102, 0.3);
  color: var(--color-green);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 6px 14px;
  border-radius: 20px;
  margin-bottom: 24px;
}

.hero-tag .dot {
  width: 8px;
  height: 8px;
  background-color: var(--color-green);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--color-green);
}

.hero-title {
  font-size: 3rem;
  line-height: 1.18;
  font-weight: 900;
  letter-spacing: -1px;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #ffffff 40%, var(--color-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 32px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.hero-cta .btn {
  padding: 14px 28px;
  font-size: 1.02rem;
}

.hero-specs {
  display: flex;
  gap: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 24px;
}

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

.spec-val {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--color-cyan);
}

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

/* Terminal Mockup */
.terminal-window {
  background: #090c15;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.6), var(--shadow-neon);
  overflow: hidden;
}

.terminal-header {
  background: rgba(16, 22, 34, 0.9);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.terminal-dots {
  display: flex;
  gap: 8px;
}

.dot-btn {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot-red { background: #ff5f56; }
.dot-yellow { background: #ffbd2e; }
.dot-green { background: #27c93f; }

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

.terminal-body {
  padding: 20px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text-main);
  min-height: 280px;
}

.terminal-line {
  margin-bottom: 8px;
  word-break: break-all;
}

.terminal-prompt {
  color: var(--color-cyan);
  margin-right: 8px;
}

.terminal-success {
  color: var(--color-green);
}

.terminal-accent {
  color: var(--color-amber);
}

/* Dashboard & Node Status Section */
.dashboard-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
}

.node-board {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  backdrop-filter: blur(12px);
}

.node-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 14px;
}

.node-table th {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  padding: 12px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.node-table td {
  padding: 14px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  font-size: 0.9rem;
}

.node-table tr:hover {
  background: rgba(0, 243, 255, 0.03);
}

.node-name {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}

.flag {
  font-size: 1.1rem;
}

.ping-badge {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
}

.ping-fast {
  background: rgba(0, 255, 102, 0.12);
  color: var(--color-green);
  border: 1px solid rgba(0, 255, 102, 0.3);
}

.ping-medium {
  background: rgba(0, 243, 255, 0.12);
  color: var(--color-cyan);
  border: 1px solid rgba(0, 243, 255, 0.3);
}

.unlock-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.unlock-tag {
  font-size: 0.72rem;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-main);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.probe-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.probe-header {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--color-cyan);
  margin-bottom: 16px;
}

.probe-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 20px;
}

.metric-box {
  background: rgba(7, 9, 14, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.06);
  padding: 14px;
  border-radius: var(--radius-sm);
  text-align: center;
}

.metric-val {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--color-green);
}

.metric-lbl {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Feature Cards Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 28px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--color-cyan);
  box-shadow: 0 10px 30px rgba(0, 243, 255, 0.15);
  background: var(--bg-card-hover);
}

.feature-icon {
  width: 52px;
  height: 52px;
  background: rgba(0, 243, 255, 0.08);
  border: 1px solid rgba(0, 243, 255, 0.25);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--color-cyan);
  margin-bottom: 20px;
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-main);
}

.feature-desc {
  color: var(--text-muted);
  font-size: 0.94rem;
  line-height: 1.65;
}

/* Pricing Grid */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 24px;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.3s ease;
  position: relative;
}

.pricing-card.featured {
  border-color: var(--color-cyan);
  box-shadow: 0 0 30px rgba(0, 243, 255, 0.2);
  background: linear-gradient(180deg, rgba(0, 243, 255, 0.08) 0%, rgba(16, 22, 34, 0.9) 100%);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  right: 20px;
  background: linear-gradient(90deg, var(--color-purple), var(--color-cyan));
  color: #050811;
  font-size: 0.72rem;
  font-weight: 800;
  padding: 4px 12px;
  border-radius: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.pricing-plan {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.pricing-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.pricing-price {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--color-cyan);
  margin-bottom: 24px;
}

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

.pricing-list {
  list-style: none;
  margin-bottom: 28px;
}

.pricing-list li {
  font-size: 0.9rem;
  color: var(--text-main);
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  gap: 10px;
}

.pricing-list li::before {
  content: "✓";
  color: var(--color-green);
  font-weight: bold;
}

/* Knowledge Base Preview Section */
.kb-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.kb-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  text-decoration: none;
  color: var(--text-main);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.kb-card:hover {
  border-color: var(--color-cyan);
  transform: translateY(-4px);
  box-shadow: 0 10px 25px rgba(0, 243, 255, 0.15);
}

.kb-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 12px;
  font-family: var(--font-mono);
}

.kb-tag {
  color: var(--color-cyan);
  background: rgba(0, 243, 255, 0.1);
  padding: 2px 8px;
  border-radius: 4px;
}

.kb-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.4;
  color: var(--text-main);
}

.kb-snippet {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
}

.kb-link {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-cyan);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* FAQ Accordion */
.faq-list {
  max-width: 850px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  overflow: hidden;
  transition: border-color 0.25s ease;
}

.faq-item.active {
  border-color: var(--color-cyan);
}

.faq-question {
  padding: 20px 24px;
  font-weight: 700;
  font-size: 1.05rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-main);
}

.faq-toggle {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  color: var(--color-cyan);
  transition: transform 0.3s ease;
}

.faq-item.active .faq-toggle {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 24px 20px 24px;
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.65;
  display: none;
}

.faq-item.active .faq-answer {
  display: block;
}

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

.review-card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 24px;
  position: relative;
}

.review-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-cyan), var(--color-purple));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  color: #000;
}

.review-author {
  font-weight: 700;
  font-size: 0.98rem;
}

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

.review-text {
  font-size: 0.92rem;
  color: var(--text-main);
  line-height: 1.6;
}

.review-stars {
  color: var(--color-amber);
  margin-bottom: 8px;
}

/* Footer */
footer {
  background: #040609;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 60px 0 30px 0;
  color: var(--text-muted);
  font-size: 0.88rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand {
  max-width: 350px;
}

.footer-title {
  color: var(--text-main);
  font-weight: 700;
  font-size: 0.98rem;
  margin-bottom: 16px;

}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--color-cyan);
}

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* Article Detail Page Layout */
.article-container {
  max-width: 900px;
  margin: 40px auto 80px auto;
  padding: 0 24px;
}

.article-header {
  margin-bottom: 40px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 30px;
}

.article-title {
  font-size: 2.4rem;
  font-weight: 900;
  margin-top: 16px;
  margin-bottom: 16px;
  line-height: 1.25;
  background: linear-gradient(135deg, #ffffff, var(--color-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.article-meta {
  display: flex;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.article-content {
  font-size: 1.05rem;
  line-height: 1.85;
  color: #e2e8f0;
}

.article-content h2 {
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--text-main);
  margin: 40px 0 20px 0;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(0, 243, 255, 0.2);
}

.article-content h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-cyan);
  margin: 28px 0 14px 0;
}

.article-content p {
  margin-bottom: 20px;
}

.article-content ul, .article-content ol {
  margin-bottom: 24px;
  padding-left: 24px;
}

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

.article-content code {
  font-family: var(--font-mono);
  background: rgba(0, 243, 255, 0.1);
  color: var(--color-cyan);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
}

.article-content pre {
  background: #090c15;
  border: 1px solid var(--border-color);
  padding: 20px;
  border-radius: var(--radius-sm);
  overflow-x: auto;
  margin-bottom: 24px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--color-green);
}

.article-cta-box {
  background: linear-gradient(135deg, rgba(0, 243, 255, 0.1), rgba(157, 78, 221, 0.1));
  border: 1px solid var(--color-cyan);
  border-radius: var(--radius-md);
  padding: 32px;
  text-align: center;
  margin: 50px 0;
}

.article-cta-box h3 {
  font-size: 1.5rem;
  margin-bottom: 12px;
  color: #fff;
}

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

  .hero-content {
    margin: 0 auto;
  }

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

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

  .dashboard-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .navbar {
    padding: 12px 16px;
  }

  .nav-menu {
    display: none; /* Can be toggled */
  }

  .hero-title {
    font-size: 2.1rem;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }
}