/* ==========================================================================
   地鼠机场 (dishujichang.cyou) - 官方落地页主样式表
   Design: Cyber Emerald & Obsidian Dark Mode with Organic Typography
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700;900&family=Outfit:wght@300;400;600;700;800&display=swap');

:root {
  --bg-dark: #0b0f17;
  --bg-card: rgba(18, 26, 38, 0.75);
  --bg-card-hover: rgba(28, 40, 58, 0.85);
  --bg-glass: rgba(11, 15, 23, 0.85);
  
  --primary: #10b981;
  --primary-glow: rgba(16, 185, 129, 0.4);
  --primary-gradient: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);
  --secondary: #8b5cf6;
  --secondary-gradient: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
  --accent-gold: #f59e0b;

  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;

  --border-light: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(16, 185, 129, 0.3);

  --font-family: 'Outfit', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

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

a {
  color: inherit;
  text-decoration: none;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
  background: #1f293d;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

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

/* Typography Utilities */
.gradient-text {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.purple-gradient-text {
  background: var(--secondary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.section-title {
  text-align: center;
  margin-bottom: 48px;
}
.section-title h2 {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.section-title p {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 680px;
  margin: 0 auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  font-weight: 700;
  font-size: 1rem;
  border-radius: 50px;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  text-align: center;
}
.btn-primary {
  background: var(--primary-gradient);
  color: #041217;
  box-shadow: 0 4px 20px var(--primary-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(16, 185, 129, 0.6);
}
.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-light);
  color: var(--text-main);
  backdrop-filter: blur(10px);
}
.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--primary);
  transform: translateY(-2px);
}

/* Header & Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-light);
  padding: 16px 0;
  transition: var(--transition);
}
.navbar .nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.4rem;
  font-weight: 800;
  color: #fff;
}
.brand-logo svg {
  width: 36px;
  height: 36px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}
.nav-links a {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition);
}
.nav-links a:hover {
  color: var(--primary);
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 90vh;
  padding-top: 140px;
  padding-bottom: 80px;
  display: flex;
  align-items: center;
  background: url('../images/gopher_hero_bg.jpg') no-repeat center center / cover;
  overflow: hidden;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11,15,23,0.78) 0%, rgba(11,15,23,0.95) 80%, #0b0f17 100%);
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 860px;
  margin: 0 auto;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid var(--border-glow);
  border-radius: 30px;
  color: var(--primary);
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 24px;
}
.hero-badge span.pulse {
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--primary);
  animation: pulse 1.8s infinite;
}
@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1.2); box-shadow: 0 0 0 10px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}
.hero h1 {
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}
.hero p.lead {
  font-size: 1.25rem;
  color: var(--text-muted);
  margin-bottom: 36px;
  line-height: 1.7;
}
.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 24px;
  max-width: 720px;
  margin: 0 auto;
}
.stat-item h3 {
  font-size: 1.8rem;
  color: var(--primary);
  font-weight: 800;
}
.stat-item p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Sections Shared */
.section {
  padding: 90px 0;
  position: relative;
}
.section-alt {
  background: rgba(18, 26, 38, 0.3);
}

/* Live Speed Matrix Table */
.speed-matrix-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 28px;
  backdrop-filter: blur(16px);
  box-shadow: 0 20px 50px rgba(0,0,0,0.5);
}
.matrix-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 16px;
}
.matrix-header h3 {
  font-size: 1.3rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
}
.refresh-btn {
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border-light);
  color: var(--text-main);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}
.refresh-btn:hover {
  background: var(--primary);
  color: #000;
}
.table-responsive {
  width: 100%;
  overflow-x: auto;
}
.speed-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}
.speed-table th {
  padding: 14px 18px;
  color: var(--text-muted);
  font-size: 0.88rem;
  border-bottom: 1px solid var(--border-light);
  font-weight: 600;
  background: rgba(0,0,0,0.2);
}
.speed-table td {
  padding: 16px 18px;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  font-size: 0.95rem;
  vertical-align: middle;
}
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 0.78rem;
  font-weight: 600;
}
.status-pill.online {
  background: rgba(16, 185, 129, 0.15);
  color: var(--primary);
  border: 1px solid rgba(16, 185, 129, 0.3);
}
.latency-num {
  font-family: monospace;
  font-weight: 700;
}
.latency-fast { color: var(--primary); }
.latency-good { color: #3b82f6; }

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: var(--transition);
  backdrop-filter: blur(10px);
}
.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-glow);
  background: var(--bg-card-hover);
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}
.feature-icon {
  width: 54px;
  height: 54px;
  background: rgba(16, 185, 129, 0.1);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 20px;
}
.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
}
.feature-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Pricing Grid */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 24px;
}
.pricing-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.pricing-card.popular {
  border-color: var(--primary);
  box-shadow: 0 0 35px rgba(16, 185, 129, 0.25);
  transform: scale(1.03);
}
.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary-gradient);
  color: #000;
  font-size: 0.8rem;
  font-weight: 800;
  padding: 4px 16px;
  border-radius: 20px;
  text-transform: uppercase;
}
.pricing-card h3 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.pricing-card .price {
  font-size: 2.5rem;
  font-weight: 900;
  color: #fff;
  margin: 16px 0;
  display: flex;
  align-items: baseline;
  gap: 4px;
}
.pricing-card .price span.period {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 400;
}
.pricing-features {
  list-style: none;
  margin: 24px 0 32px 0;
  flex-grow: 1;
}
.pricing-features li {
  padding: 10px 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  color: var(--text-muted);
  font-size: 0.92rem;
  display: flex;
  align-items: center;
  gap: 10px;
}
.pricing-features li svg {
  color: var(--primary);
  flex-shrink: 0;
}

/* Client Protocols Import */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 18px;
}
.client-box {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
  transition: var(--transition);
}
.client-box:hover {
  border-color: var(--primary);
  transform: translateY(-3px);
}
.client-box h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-top: 10px;
}
.client-box p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Articles & SEO Blog Grid */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 28px;
}
.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
}
.article-card:hover {
  border-color: var(--secondary);
  transform: translateY(-4px);
}
.article-tag {
  display: inline-block;
  background: rgba(139, 92, 246, 0.15);
  color: var(--secondary);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 6px;
  margin-bottom: 14px;
}
.article-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 12px;
}
.article-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 20px;
}
.article-meta {
  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: 14px;
}

/* Testimonials / Reviews */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}
.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 24px;
}
.review-user {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}
.avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #000;
}
.stars {
  color: var(--accent-gold);
  font-size: 0.9rem;
}
.review-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
  font-style: italic;
}

/* FAQ Accordion */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.faq-question {
  width: 100%;
  padding: 20px 24px;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 1.05rem;
  font-weight: 700;
  text-align: left;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}
.faq-answer {
  padding: 0 24px 20px 24px;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  display: none;
}
.faq-item.active .faq-answer {
  display: block;
}
.faq-icon {
  transition: transform 0.3s ease;
}
.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

/* Footer Section & PBN Links (Core Task 2) */
footer.site-footer {
  background: #06090e;
  border-top: 1px solid var(--border-light);
  padding: 60px 0 30px 0;
}
.footer-content {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 14px;
  max-width: 320px;
}
.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: #fff;
}
.footer-col ul {
  list-style: none;
}
.footer-col li {
  margin-bottom: 10px;
}
.footer-col a {
  color: var(--text-muted);
  font-size: 0.88rem;
  transition: var(--transition);
}
.footer-col a:hover {
  color: var(--primary);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.05);
  padding-top: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
}
.copyright-text {
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* PBN Friendly Links Section - Low-key, subtle, elegant, dofollow */
.footer-pbn-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  font-size: 0.82rem;
  color: var(--text-dim);
  margin-top: 12px;
}
.footer-pbn-links span.label {
  color: var(--text-dim);
  opacity: 0.7;
}
.footer-pbn-links a {
  color: #8b9bb4;
  text-decoration: none;
  transition: color 0.2s ease;
  font-weight: 500;
}
.footer-pbn-links a:hover {
  color: var(--primary);
  text-decoration: underline;
}

/* Article Reader Page Styles */
.article-page {
  padding-top: 120px;
  padding-bottom: 80px;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}
.article-header {
  max-width: 860px;
  margin: 0 auto 40px auto;
  text-align: center;
}
.article-header h1 {
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 16px;
}
.article-body {
  max-width: 860px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 40px;
  font-size: 1.05rem;
  line-height: 1.85;
  color: #d1d5db;
}
.article-body h2 {
  font-size: 1.6rem;
  color: #fff;
  margin: 32px 0 16px 0;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 8px;
}
.article-body h3 {
  font-size: 1.3rem;
  color: var(--primary);
  margin: 24px 0 12px 0;
}
.article-body p {
  margin-bottom: 18px;
}
.article-body ul, .article-body ol {
  margin: 0 0 20px 24px;
}
.article-body li {
  margin-bottom: 8px;
}
.article-body blockquote {
  border-left: 4px solid var(--primary);
  background: rgba(16, 185, 129, 0.08);
  padding: 16px 20px;
  border-radius: 0 8px 8px 0;
  margin: 24px 0;
  font-style: italic;
  color: #e5e7eb;
}
.article-cta-box {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.15) 0%, rgba(139, 92, 246, 0.15) 100%);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
  padding: 30px;
  text-align: center;
  margin: 40px 0;
}
.article-cta-box h3 {
  color: #fff;
  font-size: 1.4rem;
  margin-bottom: 12px;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
  .hero h1 { font-size: 2.4rem; }
  .hero p.lead { font-size: 1.05rem; }
  .hero-stats { grid-template-columns: 1fr; gap: 16px; }
  .nav-links { display: none; }
  .footer-content { grid-template-columns: 1fr; }
  .article-body { padding: 24px; }
}